Fatahi, B, Indraratna, B & Khabbaz, H 1970, 'Analysing Soft Ground Improvement Caused by Tree Root Suction', Advances in Measurement and Modeling of Soil Behavior, Geo-Denver 2007, American Society of Civil Engineers, Denver, Colorado, USA, pp. 6-10.
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Bioengineering aspects of native vegetation are currently being evolved to improve soil stiffness, slope stabilisation, and erosion control. Vegetation contributes to weak soil stabilisation through reinforcement of the soil, dissipation of excess pore pressures, and increasing the shear strength by induced matric suction. This paper looks at the way that vegetation influences soil matric suction, shrinkage, and ground settlement. A theoretical model previously developed by the authors for the rate of tree root water uptake together with an associated numerical simulation is used in this study. A conical shape is considered to represent the geometry of the tree root zone. Based on this proposed model, the distribution of moisture and the matric suction profile adjacent to the tree are numerically analysed. Field measurements taken from previously published literature are compared with numerical predictions for further validation. The predicted results compared favourably with the measured results, justifying the assumptions upon which the model was developed. It is desirable to consider the influence zone of tree roots and the improved soil properties in modern geotechnical designs, benefiting from native vegetation. Copyright ASCE 2007.
Fatahi, B, Indraratna, B & Khabbaz, H 1970, 'Enhanced numerical analysis of ground behaviour influenced by tree root suction', Common Ground: Proceedings of the 10th Australia and New Zealand Conference on Geomechanics, Australia New Zealand Geomechanics conference, Coffey Geotechnics, Brisbane, Australia, pp. 142-147.
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Tree roots provide three stabilising functions: (a) reinforcement of the soil, (b) dissipation of excess pore pressures, (c) establishing sufficient matric suction to increase the shear strength. This paper looks at the way that vegetation influences soil moisture content distribution, and ground settlement. A theoretical model previously developed by the authors for the rate of tree root water uptake together with an associated numerical simulation is used in this study. Field measurements taken from literature published previously are compared with the authors' numerical model. The predicted results obtained from the numerical analysis, compared favourably with the field measurements, justifying the assumptions upon which the model was developed.
Feuerlicht, G 1970, 'Prerequisites for Successful SOA Adoption', Systems Integration 2007 15th International Conference, International Conference on Systems Integration International Conference, Autori clanku, Praha, pp. 22-25.
Feuerlicht, G 1970, 'Service Aggregation Using Relational Operations on Interface Parameters', International Conference on Service Oriented Computing - Lecture Notes in Computer Science, International Conference on Service Oriented Computing, Springer Berlin Heidelberg, United States, pp. 95-103.
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Many practitioners recommend the use of coarse-grained services that minimize the number of messages and avoid the need to maintain state information between invocations. However, when considered from a software engineering perspective, coarse-grained services suffer from a number of significant drawbacks, including limited reuse and difficult composability. An important challenge for the developers of service-oriented applications is to determine appropriate level of service granularity to ensure that services are reusable and at the same time have good performance characteristics. Decisions about service granularity need to be taken in the context of a methodological framework rather than using ad hoc heuristics. In this paper we describe a method for service aggregation that uses relational operations over interface parameters to assemble services from low granularity atomic service operations. We illustrate the impact of service aggregation on cohesion and coupling using examples and discuss service granularity in the context of application requirements.
Fitch, R, Butler, Z & IEEE 1970, 'Scalable locomotion for large self-reconfiguring robots', PROCEEDINGS OF THE 2007 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-10, IEEE International Conference on Robotics and Automation, IEEE, Rome, ITALY, pp. 2248-2253.
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Fokkenrood, S, Leijdekkers, P & Gay, V 1970, 'Ventricular Tachycardia/Fibrillation detection algorithm for 24/7 personal wireless heart monitoring', Pervasive Computing for Quality of Life Enhancement, Proceedings, ICOST, Springer, Nara, Japan, pp. 110-120.
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This paper describes a Ventricular Tachycardia/Fibrillation (VT/VF) detection algorithm that is specifically designed for a 24/7 personal wireless heart monitoring system. This monitoring system uses Bluetooth enabled bio-sensors and smart phones to monitor continuously cardiac patients vital signs. Our VT/VF algorithm is optimized for continuous real-time monitoring on smart phones with a high sensitivity and specificity. We studied and compared existing VT/VF algorithms and selected the one which suited best our requirements. However, we modified and improved the existing algorithm for the smart phone to achieve better performance results. We tested the algorithm on full-length signals from the physionet CU, MIT-db and MIT-vfdb databases [16] without any pre-selection of VT/VF or normal QRS-complex signals. We achieved 97% sensitivity, 98% accuracy and 98% specificity for our implementation which is excellent compared to existing algorithms.
Frost, A, Center, JR, Eisman, JA & Nguyen, TV 1970, 'Enhancement of prognosis of osteoporotic fractures by genetic marker: Contribution of the collagen I alpha 1 gene', JOURNAL OF BONE AND MINERAL RESEARCH, 29th Annual Meeting of the American-Society-for-Bone-and-Mineral-Research, AMER SOC BONE & MINERAL RES, Honolulu, HI, pp. S57-S57.
Frost, SA, Nguyen, ND, Center, JR, Eisman, JA & Nguyen, TV 1970, 'Five-year and long-term risks of developing osteoporosis and/or fracture: A natural history analysis', BONE, 17th Scientific Meeting of the International-Bone-and-Mineral-Society, ELSEVIER SCIENCE INC, Montreal, CANADA, pp. S295-S296.
Gandia Sanchez, R, Xiaojing Huang & Kwan-Wu Chin 1970, 'Viability of concurrent transmission and reception for UWB radios over multipath channels', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, Sydney, AUSTRALIA, pp. 1241-1246.
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Gao, J & Xu, RY 1970, 'Mixture of the Robust L1 Distributions and Its Applications', Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Springer Berlin Heidelberg, pp. 26-35.
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Recently a robust probabilistic L1-PCA model was introduced in [1] by replacing the conventional Gaussian noise model with the Laplacian L1 model. Due to the heavy tail characteristics of the L1 distribution, the proposed model is more robust against data outliers. In this paper, we generalized the L1-PCA into a mixture of L1-distributions so that the model can be used for possible multiclustering data. For the model learning we use the property that the L1 density can be expanded as a superposition of infinite number of Gaussian densities to include a tractable Bayesian learning and inference based on the variational EM-type algorithm. © Springer-Verlag Berlin Heidelberg 2007.
Gao, Y, Lu, J, Zhang, G, Gao, S & PRess, A 1970, 'A bilevel model for railway train set organizing optimization', PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON INTELLIGENT SYSTEMS AND KNOWLEDGE ENGINEERING (ISKE 2007), International Conference on Intelligent Systems and Knowledge Engineering, Atlantis Press, Chengdu, China, pp. 777-782.
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Train Set Organization (TSO) is to arrange the train set in railway freight transportation. Bilevel programming techniques were proposed to solve the Stackelberg game in which play is sequential and cooperation is not permitted. In this paper, an op- timizing model for TSO is developed by the bilevel techniques. First, we analyzed the multiple level nature of management on TSO and simplified it into two levels. Then, a bilevel model for TSO was develop. Finally, this model was further illustrated by applying it on a railway station.
Ge, Y, Esselle, KP & Bird, TS 1970, 'A high-gain low-profile EBG resonator antenna', 2007 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, VOLS 1-12, IEEE Antennas-and-Propagation-Society International Symposium, IEEE, Honolulu, HI, pp. 1185-1188.
Ge, Y, Esselle, KP & Bird, TS 1970, 'Wideband Stacked Dielectric Resonator Antennas', 2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications, 2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications, IEEE, Cambridge, ENGLAND, pp. 303-306.
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Geng, X, Wang, L, Li, M, Wu, Q & Smith-Miles, K 1970, 'Distance-driven Fusion of Gait and Face for Human Identification in Video', Proceedings of Image and Vision Computing New Zealand 2007, Image and Vision Computing Conference, Image and Vision Computing New Zealand, Hamilton, New Zealand, pp. 19-24.
Gerber, C, Crews, K & Sigrist, C 1970, 'Accessible and reliable design of stressed-skin panels - An Australian perspective', Progress in Mechanics of Structures and Materials - Proceedings of the 19th Australasian Conference on the Mechanics of Structures and Materials, ACMSM19, Australasian Conference on the Mechanics of Structures and Materials, Taylor & Francis (Balkema), Christchurch, New Zealand, pp. 1017-1022.
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Stressed-skin panel (SSP) technology possesses many advantages and the subject research program has increased the understanding of SSP structures with respect to serviceability and ultimate resistance performance. In order for the building industry to capitalise on the results of this research, it is essential that the codes i.e. AS 1720.1-1997 (Australian Standard™ 1997) should embrace a design procedure enabling the use of the full potential of SSP systems. This paper outlines an amendment proposal to Section 5 of AS 1720.1-1997 that will enable designers to achieve a problem-free and efficient implementation of SSP technology. It focuses on the aspects of the tributary width of the sheathing and the stress determinations in the composite section. The proposed design procedure is both useable and straightforward to implement and satisfies requirements of structural safety and comfortable serviceability. It is based on a solid research background and relates to EC5 (European Committee for Standardisation 1995), which will necessitate some adjustments to fully comply with Australian design standard. © 2007 Taylor & Francis Group, London.
Gerber, C, Crews, K & Sigrist, C 1970, 'Screw- and nail-gluing techniques for wood composite structures', Progress in Mechanics of Structures and Materials - Proceedings of the 19th Australasian Conference on the Mechanics of Structures and Materials, ACMSM19, Australasian Conference on the Mechanics of Structures and Materials, Taylor & Francis (Balkema), Christchurch, New Zealand, pp. 1023-1029.
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Composite systems enhance the structural capacity and reliability of wood solutions for structures. With today engineered wood products and structural adhesives, high performing structures can be constructed. Hybrid assembly techniques that combine mechanical fasteners and an adhesive (screw- and nailgluing techniques) allow manufacturing large dimension composite structures with reasonable infrastructure. They also give full composite properties to the interlayers. Furthermore, these hybrid connections can experience ductility. This paper presents a research on small-scale glued assemblies which were manufactured using screw- and nail-gluing techniques. It discusses qualitative and quantitative analyses that confirmed the full-composite properties and ductility of the interlayers. The analyses also show that superposing the behaviour of both connectors is reasonable to predict the strength and slip modulus of hybrid connections. © 2007 Taylor & Francis Group, London.
Ghevondian, N, Nguyen, H, Jones, T & Skladnev, V 1970, 'Comparison of the overnight and daytime physiological responses of children with type 1 diabetes using the HypoMon (R) - Results of the glucose-clamp studies', DIABETES, 67th Annual Meeting of the American-Diabetes-Association, AMER DIABETES ASSOC, Chicago, IL, pp. A117-A117.
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Twenty five T1DM children (14.4 ± 1.6 years), HbA1c 7.65 % (5.9-12.7) volunteered for the 4-hour hyperinsulinaemic clamp studies. The HypoMon® measured the ECG (QTc-interval), heart rate (R-R interval) and the skin impedance, while the actual blood glucose levels (BGL) were collected as reference (Yellow Springs Instruments) during the five glycemic phases: 30 minute baseline (115 ± 31.4 mg/dL), 60 minute euglycemia (97.6 ± 16.4 mg/dL), 30 minute ramp phase (72.7 ± 13.6 mg/dL), 40 minute hypoglycemia (49.9 ± 5.9 mg/dL) and further 30 minute euglycemia (94.2 ± 20.5 mg/dL). The counterregulatory hormones and the standardised symptoms questionnaires were also obtained for hypoglycemia unaware analysis. These results were applied to the learning algorithm in a 2 stage process: learning phase (15 patients) and test phase (10 patients). All three parameters demonstrated significant changes from the euglycemia to hypoglycemia phase. The heart rate, QTc-interval and skin imp. changed by +14.2% (Ρ < 0.004), +8.2% (Ρ< 0.001) and â24.4% (Ρ < 0.05) respectively. The trained algorithm, applied to the test patients detected hypoglycemia with a sensitivity and specificity of 0.77 and 0.94 respectively.
Gide, E & Wu, MX 1970, 'Analysing The Effectiveness of E-Mail Surveys: A Case Study In Australia', 2007 IEEE International Conference on Service Operations and Logistics, and Informatics, 2007 IEEE International Conference on Service Operations and Logistics, and Informatics, IEEE.
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Gide, E & Wu, MX 1970, 'Analysing the effectiveness of e-mail surveys: A case study in Australia', PROCEEDINGS OF THE 2007 IEEE INTERNATIONAL CONFERENCE ON SERVICE OPERATIONS AND LOGISTICS, AND INFORMATICS, IEEE International Conference on Service Operations and Logistics and Informatics, IEEE, PA, Philadelphia, pp. 293-+.
Gide, E & Wu, MX 1970, 'The e-commerce divide in service SMEs between China and Australia', PROCEEDINGS OF THE 2007 IEEE INTERNATIONAL CONFERENCE ON SERVICE OPERATIONS AND LOGISTICS, AND INFORMATICS, IEEE International Conference on Service Operations and Logistics and Informatics, IEEE, PA, Philadelphia, pp. 192-+.
Gide, E & Wu, MX 1970, 'The E-Commerce Divide in Service SMEs Between China And Australia', 2007 IEEE International Conference on Service Operations and Logistics, and Informatics, 2007 IEEE International Conference on Service Operations and Logistics, and Informatics, IEEE.
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Gill, AQ & Henderson-Sellers, B 1970, 'Six aspects of an agile software development methodology', Online Proceedings of the European and Mediterranean Conference on Information Systems (EMCIS) 2007, European, Mediterranean and Middle Eastern Conference on Information Systems, Polytechnic university of Valencia, Valencia, spain, pp. 1-11.
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A shared vision of an agile methodology can play a vital role in adaptive agile software development environments as the absence of a shared or common vision is one of the main factors of software project failures. This paper presents six aspects of an agile software development methodology: agility, abstraction, process, people, product and tools. This set of aspects is an attempt to provide a guiding vision or mental-model for an agile methodology. The purpose of this paper is to explicitly describe in detail these aspects that are part of our agile software solution framework (ASSF). These six aspects can be combined to generate various situation-specific configurations of agile methodologies by using a method engineering approach.
Gill, AQ, Henderson-Sellers, B & McBride, TM 1970, 'Agile adoption and improvement model', Online Proceedings of the European and Mediterranean Conference on Information Systems (EMCIS) 2007, European, Mediterranean and Middle Eastern Conference on Information Systems, Polytechnic University of Valencia, Valencia, Spain, pp. 1-9.
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Agile software development methods focus on the rapid and iterative delivery of a software product in small increments. Over the last decade, the software industry has shown a substantial interest in agile practices but there is no standard guiding vision model or framework to adopt and then use to assess or improve the agile method in a software development organization; indeed, the absence of a guiding vision model could result in the failure of the agile implementation. The purpose of this paper is to present an Agile Adoption and Improvement Model (AAIM) for the adoption, assessment and improvement of an agile software development process. We have analysed the results of several agile software process assessments, industrial case studies on the adoption of an agile approach and feedback from both researchers and the software industry for the construction of the AAIM. The AAIM can be used as a gradual road map for the adoption of an agile approach so that the required agile level can be achieved and improved over a period of time. The AAIM has been organized in three agile blocks, six agile stages (AS) and an embedded agility measurement model (to quantitatively measure the degree of agility). In AAIM, each stage specifies goals that must be achieved to attain a particular business value through the use of an agile software development approach.
Goratti, L, Haapola, J & Oppermann, I 1970, 'Energy consumption of the IEEE Std 802.15.3 MAC protocol in communication link set-up over UWB radio technology', Wireless Personal Communications, 8th International Symposium on Wireless Personal Multimedia Communications, Springer Science and Business Media LLC, Aalborg, DENMARK, pp. 371-386.
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Green, S & Blumenstein, M 1970, 'A Comparison of Neural-Based Techniques Investigating Rotational Invariance for Upright People Detection in Low Resolution Imagery', Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Springer Berlin Heidelberg, pp. 647-653.
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This paper describes a neural-based technique for detecting upright persons in low-resolution beach imagery in order to predict trends of tourist activities at beach sites. The proposed system uses a structural feature extraction technique to represent objects of interest for training a selection of neural classifiers. A number of neural-based classifiers are compared in this study and a direction-based feature extraction technique is investigated in conjunction with a rotationally invariant procedure for the purpose of beach object classification. Encouraging results are presented for person detection using video imagery collected from a beach site on the coast of Australia. © Springer-Verlag Berlin Heidelberg 2007.
Guo, Y, Chen, J, Zhu, J, Lu, H, Lu, H & Jin, J 1970, 'Development of a PM linear motor for driving HTS maglev vehicle', 2007 INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS, VOLS 1-4, International Conference on Electrical Machines and Systems, IEEE, Seoul, SOUTH KOREA, pp. 1300-+.
Guo, Y, Chen, J, Zhu, J, Lu, H, Lu, H & Jin, J 1970, 'Development of a PM Linear Motor for Driving HTS Maglev Vehicle', 2007 International Conference on Electrical Machines and Systems (ICEMS), 2007 International Conference on Electrical Machines and Systems, IEEE.
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Guo, Y, Chen, J, Zhu, J, Lu, H, Lu, H & Jin, J 1970, 'Development of a PM linear motor for driving HTS maglev vehicle', Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007, International Conference on Electrical Machines and Systems, IEEE, Seoul, pp. 824-827.
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The phenomenon that a permanent magnet (PM) over a high temperature superconductor (HTS) bulk can produce strong levitation force with self-stabilizing feature has attracted strong interest of application in maglev transportation systems, in which a linear motion drive is an obvious advantage. This paper presents the development of a PM linear synchronous motor drive for a small-scale prototype vehicle which is levitated by PM-HTS bulks. Magnetic field finite element analyses are conducted to compute accurately the key motor parameters such as winding flux, back electromotive force (emf), inductance and cogging force. The steady state characteristic of the motor is predicted by using the classic phasor voltage equation, which can provide a reasonable result if the fundamental components of the applied voltage, back emf and current are dominant. A Matlab/Simulink-based model, capable of considering the dependence of key parameters on the mover position, is built to predict effectively the motor's dynamic performance under a brushless DC (BLDC) control scheme. The simulated results show that the developed linear motor can drive the HTS maglev vehicle prototype at the desired speed.
Guo, Y, Dou, Y, Zhu, J, Zhan, Y & Jin, J 1970, 'Parameter determination and performance analysis of a PM synchronous generator by magnetic field finite element analysis', 2007 Australasian Universities Power Engineering Conference, 2007 Australasian Universities Power Engineering Conference (AUPEC), IEEE, Perth, Australia, pp. 730-733.
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Guo, Y, Dou, Y, Zhu, J, Zhan, Y & Jin, J 1970, 'Parameter Determination and Performance Analysis of a PM Synchronous Generator by Magnetic Field Finite Element Analysis', 2007 AUSTRALASIAN UNIVERSITIES POWER ENGINEERING, VOLS 1-2, Australasian Universities Power Engineering Conference (AUPEC), IEEE, Curtin Univ Technol, Perth, AUSTRALIA, pp. 558-+.
Guo, Y, Zhu, J, Liu, D, Lu, H & Wang, S 1970, 'Application of multi-level multi-domain modeling in the design and analysis of a PM transverse flux motor with SMC core', 2007 INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND DRIVE SYSTEMS, VOLS 1-4, 7th International Conference on Power Electronics and Drive Systems (PEDS 2007), IEEE, Bangkok, THAILAND, pp. 275-+.
Guo, Y, Zhu, J, Liu, D, Lu, H & Wang, S 1970, 'Application of Multi-level Multi-domain Modeling in the Design and Analysis of a PM Transverse Flux Motor with SMC Core', 2007 7th International Conference on Power Electronics and Drive Systems, 2007 7th International Conference on Power Electronics and Drive Systems, IEEE, Bangkok, Thailand, pp. 27-31.
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This paper presents the design and analysis of a permanent magnet (PM) transverse flux motor with soft magnetic composite (SMC) core by applying multi-level multi-domain modeling. The design is conducted in two levels. The upper level is composed of a group of equations which describe the electrical and mechanical characteristics of the motor. The lower level consists of two domains: electromagnetic analysis and thermal calculation. The initial design, including structure, materials and major dimensions, is determined according to existing experience and empirical formulae. Then, optimization is carried out at the system level (the upper level) for the best motor performance by optimizing the structural dimensions. To successfully deal with such a multi-level multi-domain optimization problem, an effective modeling with both high computational accuracy and speed is required. For accurately computing the key motor parameters, such as back electromotive force, winding inductance and core loss, magnetic field finite element analysis is performed. The core loss in each element is stored for effective thermal calculation, and the winding inductance and back EMF are stored as a look-up table for effective analysis of the motor's dynamic performance. The presented approach is effective with good accuracy and reasonable computational speed. © 2007 IEEE.
Guo, Y, Zhu, J, Lu, H, Wang, S & Jin, J 1970, 'Performance analysis of an SMC transverse flux motor with modified double-sided stator and PM flux concentrating rotor', Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007, International Conference on Electrical Machines and Systems, IEEE, Seoul, Korea, pp. 1553-1556.
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This paper presents the design and performance analysis of a three-phase three-stack transverse flux motor with a modified double-sided stator and a permanent magnet (PM) flux concentrating rotor. Both stator and rotor cores employ SOMALOY™500, a new soft magnetic composite (SMC) material specially developed for electrical machine application. By taking advantage of the unique properties of SMC, such as the magnetic isotropy, the motor is designed with three-dimensional (3D) magnetic flux path. To accurately compute the motor parameters and performance, improved formulations are applied in combination with 3D magnetic field finite element analysis. The designed motor shows superior characteristics to laminated machines.
Guo, Y, Zhu, J, Lu, H, Wang, S & Jin, J 1970, 'Performance analysis of an SMC transverse flux motor with modified double-sided stator and PM flux concentrating rotor', 2007 International Conference on Electrical Machines and Systems (ICEMS), 2007 International Conference on Electrical Machines and Systems, IEEE.
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Hadgraft, R & Goricanec, J 1970, 'Engineering sustainability?!', ASEE Annual Conference and Exposition, Conference Proceedings.
Hadgraft, RG & Goricanec, JL 1970, 'Student engagement in project-based learning', Proceedings of the Inaugural International Conference on Research in Engineering Education, ICREE.
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In 2003-4, The School of Civil and Chemical Engineering at RMIT University made a strong commitment to project-based learning through the redesign of its major programs: civil and infrastructure engineering, chemical engineering and environmental engineering. A project-based course became one quarter of each semester of each of the three programs, as a means of developing the required graduate capabilities. An important aim of such project-based learning is to bring real engineering problems into the classroom, to engage students in understanding the nature of engineering problems, and also to provide incentive in the acquisition of the seemingly difficult technical skills in other courses. The authors' experiences over many years indicate that such projects work for many, but not all, students. Some students fail to engage in the project work, for various reasons. This project set out to understand the reasons for engagement and non-engagement among first year civil and environmental engineering students. Students want interesting work, and an own-choice project seems to provide this. Being interested was the factor most strongly correlated with both course and program engagement. Student groups also need careful management by tutors so that they properly understand what is required of them (and don't get stressed and waste time in non-productive work). The groupwork component of these projects helps to connect students with other students, which they list as an important motivator for them as they move through first year. Finally, first year students need careful guidance and orientation to their new university environment so that they can develop appropriate study habits as well as appropriate communication and research skills to match what is expected of them. © 2007 ASEE.
Haiwei Lu, Jianguo Zhu, Youguang Guo & Zhiwei Lin 1970, 'A miniature short stroke tubular linear actuator and its control', 2007 International Conference on Electrical Machines and Systems (ICEMS), 2007 International Conference on Electrical Machines and Systems, IEEE.
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Haiwei, L, Jianguo, Z, Youguang, G & Zhiwei, L 1970, 'A miniature short stroke tubular linear actuator and its control', Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007, International Conference on Electrical Machines and Systems, IEEE, Seoul, Korea, pp. 1680-1685.
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Miniature actuators are the critical components in the robotic applications with high intelligence, high mobility and small scales. Among various types of actuators, linear actuators show advantages in many aspects. A miniature short stroke PM tubular linear actuator for the micro robotic applications is presented in this paper. The actuator is deliberately designed based on the optimal force capability and a proper sensorless control scheme is developed for the driving of the actuator. Experiment both on the prototype of the actuator and the drive system show the validity of the design.
Hamilton, TJ, Jin, C & van Schaik, A 1970, 'A Basilar Membrane Resonator for an Active 2-D Cochlea', 2007 IEEE International Symposium on Circuits and Systems (ISCAS), 2007 IEEE International Symposium on Circuits and Systems (ISCAS), IEEE, pp. 2387-2390.
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In this paper we present a Basilar Membrane Resonator design for an Active 2-D Cochlea. It incorporates some of the non-linear behaviour exhibited in the real cochlea by utilizing a quality factor control loop. This control loop varies the gain and the frequency selectivity of the resonator based on the amplitude of the input signal. © 2007 IEEE.
Hamilton, TJ, Jin, C, Tapson, J & van Schaik, A 1970, 'A 2-D Cochlea with Hopf Oscillators', 2007 IEEE Biomedical Circuits and Systems Conference, 2007 IEEE Biomedical Circuits and Systems Conference, IEEE, pp. 91-94.
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In this paper we present the circuits for a 2-D silicon cochlea whose basilar membrane resonant elements are constructed using oscillators whose dynamic behaviour is governed by the Hopf differential equation. By using Hopf oscillators we are able to model some of the behaviour of the outer hair cells (OHCs) whose action is responsible for the cochlea's nonlinear behaviour. © 2007 IEEE.
Hao, H, Deeks, AJ, Xia, Y & Zhu, X-Q 1970, 'An investigation of sensitivity and reliability of various vibration parameters for structure condition monitoring', STRUCTURAL CONDITION ASSESSMENT, MONITORING AND IMPROVEMENT, VOLS 1 AND 2, 2nd International Conference on Structural Condition Assessment, Monitoring and Improvement (SCAMI-2), SCIENCE PRESS BEIJING, Changsha, PEOPLES R CHINA, pp. 155-161.
He, S, Zhang, H, Jia, W, Wu, Q & Hintz, TB 1970, 'Combining Global and Local Features for Detection of License Plates in Video', Proceedings of Image and Vision Computing New Zealand 2007, Image and Vision Computing Conference, Image and Vision Computing New Zealand, Hamilton, New Zealand, pp. 288-293.
He, X, Hintz, T, Li, J, Zhang, H, Wu, Q & Jia, W 1970, 'Local binary pattern on hexagonal structure for face matching', Proceedings of the 2007 International Conference on Image Processing, Computer Vision, and Pattern Recognition, IPCV 2007, International Conference on Image Processing, Computer Vision and Pattern Recognition, CSREA Press, Las Vegas, USA, pp. 455-460.
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Principal Components Analysis (PCA), Independent Component Analysis (ICA) and Linear Discriminant Analysis (LDA), have been widely used for 2D face recognition. Local Binary Pattern (LBP), however, provides a simpler and more effective way to represent faces. With LBP, face image is divided into small regions from which LBP histograms are extracted and concatenated into a single and global feature histogram representing the face image. The recognition is performed using Chi square and other commonly used dissimilarity measures. In this paper, we construct LBP codes together with three dissimilarity measures on hexagonal structure. We show that LBPs defined on hexagonal structure will lead to a faster and more accurate scheme for face recognition.
He, X, Jia, W, Li, J, Wu, Q & Hintz, T 1970, 'An Approach to Edge Detection on a Virtual Hexagonal Structure', 9th Biennial Conference of the Australian Pattern Recognition Society on Digital Image Computing Techniques and Applications (DICTA 2007), 9th Biennial Conference of the Australian Pattern Recognition Society on Digital Image Computing Techniques and Applications (DICTA 2007), IEEE, Glenelg, Australia, pp. 340-345.
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Hexagonal structure is another image structure alternative to traditional square image structure for image processing and computer vision. The geometrical arrangement of pixels on a hexagonal structure can be described as a collection of hexagonal pixels. Because all the existing hardware for capturing image and for displaying image are produced based on square structure, it becomes important to find a proper software approach to mimic hexagonal structure so that images represented on the traditional square structure can be smoothly converted from or to the images on hexagonal structure. For accurate image processing, it is critical to best maintain the image resolution during the image conversion. In this paper, a bilinear interpolation algorithm that is used to convert an image from square structure to hexagonal structure is presented. Based on this, an edge detection method is proposed. Our experimental results show that the bilinear interpolation improves the edge detection accuracy. © 2007 IEEE.
He, X, Jia, W, Wu, Q & Hintz, T 1970, 'Advances in Grid and Pervasive Computing', Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), International Conference on Grid and Pervasive Computing, Springer Berlin Heidelberg, Paris, France, pp. 751-756.
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This paper presents an edge detection method based on bilateral filtering taking into account both spatial closeness and intensity similarity of pixels in order to preserve important visual cues provided by edges and reduce the sharpness of transitions in intensity values as well. In addition, the edge detection method proposed in this paper is achieved on sampled images represented on a newly developed virtual hexagonal structure. Due to the compact and circular nature of the hexagonal lattice, a better quality edge map is obtained. We also present a parallel implementation for edge detection on the virtual hexagonal structure that significantly increases the computation speed. © Springer-Verlag Berlin Heidelberg 2007.
He, X, Li, J, Chen, Y, Wu, Q & Jia, W 1970, 'Local Binary Patterns for Human Detection on Hexagonal Structure', Ninth IEEE International Symposium on Multimedia (ISM 2007), Ninth IEEE International Symposium on Multimedia (ISM 2007), IEEE, Taichung, Taiwan, pp. 65-71.
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Local Binary Pattern (LBP) was designed and has been widely used for efficient texture classification. LBP provides a simple and effective way to represent texture patterns. Uniform LBPs play an important role for LBP-based pattern/object recognition as they include majority of LBPs. On the other hand, Human detection based on Mahalanobis Distance Map (MDM) recognizes appearance of human based on geometrical structure. Each MDM shows a clear texture pattern that can be classified using LBPs. In this paper, we compute LBPs of MDMs on a hexagonal structure. The circular pixel arrangement in hexagonal structure results in higher accuracy for LBP representation than on square structure. Chi-square as a measure is used for human detection based on uniform LBPs obtained. We show that our method using LBPs built on MDMs has a higher human detection rate and a lower false positive rate compared to the method merely based on MDMs. We will also show using experimental results that LBPs on hexagonal structure lead to more robust human classification.
He, X, Li, J, Chen, Y, Wu, Q & Jia, W 1970, 'Local binary patterns for human detection on hexagonal structure', Proceedings - 9th IEEE International Symposium on Multimedia, ISM 2007, pp. 65-71.
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Local Binary Pattern (LBP) was designed and has been widely used for efficient texture classification. LBP provides a simple and effective way to represent texture patterns. Uniform LBPs play an important role for LBP-based pattern/object recognition as they include majority of LBPs. On the other hand, Human detection based on Mahalanobis Distance Map (MDM) recognizes appearance of human based on geometrical structure. Each MDM shows a clear texture pattern that can be classified using LBPs. In this paper, we compute LBPs of MDMs on a hexagonal structure. The circular pixel arrangement in hexagonal structure results in higher accuracy for LBP representation than on square structure. Chi-square as a measure is used for human detection based on uniform LBPs obtained. We show that our method using LBPs built on MDMs has a higher human detection rate and a lower false positive rate compared to the method merely based on MDMs. We will also show using experimental results that LBPs on hexagonal structure lead to more robust human classification. © 2007 IEEE.
He, X, Li, J, Jia, W, Wu, Q & Hintz, T 1970, 'Local Binary Patterns on Hexagonal Image Structure', 7th IEEE International Conference on Computer and Information Technology (CIT 2007), 7th IEEE International Conference on Computer and Information Technology (CIT 2007), IEEE, Aizu-Wakamatsu City, Fukushima, Japan, pp. 639-644.
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Local binary pattern (LBP) was designed and widely used for efficient texture classification. It has been used for face recognition and has potential applications in many other research areas such as human detection. LBP provides a simple and effective way to represent patterns. Uniform LBPs play an important role for LBP-based pattern /object recognition as they include majority of LBPs. In this paper, we present LBP codes on hexagonal image structure. We show that LBPs defined on hexagonal structure have higher percentages of uniform LBPs that will lead to a more efficient and accurate recognition scheme for image classification.
He, X, Wu, Q, Zhang, H & Hintz, T 1970, 'A trend for face recognition', Fourth International Conference on Information Technology and Applications, ICITA 2007, International Conference on Information Technology and Applications, Macquarie Scientific Publishing, Harbin, China, pp. 254-257.
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Face recognition has many applications in law enforcement, crowd surveillance, security access control and human computer interaction. However, the applications have been, greatly constrained by the limitations of the currently available recognition tools because these tools are either too slow, sensitive to pose, illumination and facial expression, or too expensive, and hence are impractical. Face recognition is difficult and still has a long way to go before it really becomes practical. The aim of this paper is to present how a system for real-time, robust and inexpensive face recognition may be approached. The system contains the following components: Low cost CCTV video cameras or simple digital, cameras to quickly locate faces on 2D face images captured. A constructor of 3D face images using the captured 2D images. Algorithms that accurately match the constructed 3D face images to the 2D face images preciously existing in a gallery in real-time for pose and illumination invariant face recognition.
Henderson-Sellers, B, Serour, MK, Gonzalez-Perez, C & Qumer, A 1970, 'Improving agile software development by the application of method engineering practices', PROCEEDINGS OF THE IASTED INTERNATIONAL CONFERENCE ON SOFTWARE ENGINEERING, IASTED International Conference on Software Engineering, ACTA Press, Innsbruck, Austria, pp. 55-60.
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Despite the vast attention and wide acceptance of the newly engineered agile methods for software development, those methods are seldom linked to the goals of software process improvement (SPI), an approach that aims to provide support for significant improvement of both the quality of those methods as well as the resultant software products. In this paper, we propose an extension to agile methods by adding extra characteristics in order for agile methods to better support SPI. We explain how agile methods can gain those extra attributes through the application of a method engineering approach along with our new tool (4-DAT) that assists method engineers and managers in selecting the most appropriate method fragments for their needed agile methods. Finally, we summarize a number of industrial case studies carried out over several years in order to test and improve the efficiency of our theory of adding SPI to an agile methodological approach.
Hidayat, R, Dejhan, K, Moungnoul, P & Miyanaga, Y 1970, 'A GHz analog multiplier for UWB communications', 2007 Asia-Pacific Conference on Communications, 2007 Asia Pacific Conference on Communications, IEEE.
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Hoang, HG, Tuan, HD & Nguyen, TQ 1970, 'Design of Two-Channel Filter Bank Composed of Linear Phase IIR Filters', 2007 15th International Conference on Digital Signal Processing, 2007 15th International Conference on Digital Signal Processing, IEEE, Cardiff, Wales, pp. 308-311.
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This paper proposes a novel method to design two-channel filter banks composed of exactly linear phase IIR filters. Broadly speaking, the design problem is formulated as a semidefinite program (SDP) of minimal order such that the computational complexity
Hoang, HG, Tuan, HD & Nguyen, TQ 1970, 'Frequency Selective KYP Lemma and its Applications to IIR Filter Bank Design', 2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07, 2007 IEEE International Conference on Acoustics, Speech, and Signal Processing, IEEE, Honolulu, HI, pp. 1457-1460.
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For a transfer function/filter F(e(Jw)) of order n, Kalman-Yakubovich-Popov (KYP) lemma characterizes the intractable semi-infinite programming (SIP) condition F(e(-Jw)) 1 Theta [F(e(-Jw)) 1]>= 0 for all omega in frequency domain by a tractable semi-defi
Hossain, MJ, Hossain, MS, Hoque, MA & Anower, MS 1970, 'A novel Fuzzy logic based flux weakening speed control for IPMSM drive with variable direct and quadrature axis inductances', 2007 10th International Conference on Computer and Information Technology, 2007 10th International Conference on Computer and Information Technology (ICCIT 2007), IEEE, United Int Univ, Dhanmondi, BANGLADESH, pp. 27-+.
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Hoyer, P, Lee, T & Spalek, R 1970, 'Negative weights make adversaries stronger', Proceedings of the thirty-ninth annual ACM symposium on Theory of computing, STOC07: Symposium on Theory of Computing, ACM.
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Huang, Y, Zhu, J, Guo, Y & Hu, Q 1970, 'Core Loss and Thermal Behavior of High-Speed SMC Motor Based on 3-D FEA', 2007 IEEE International Electric Machines & Drives Conference, 2007 IEEE International Electric Machines & Drives Conference, IEEE, Antalya, Turkey, pp. 1569-1573.
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In a high-speed motor, core loss is much greater than other losses and is the main source of heat due to the high operating frequency. Therefore it is of crucial importance to be able to calculate the core loss accurately. The rotational core loss model is employed in this paper. Practical methods considering the alternating magnetic filed only are also presented, which are useful to designers who do not have rotational core loss data. The three-dimensional (3-D) finite element analysis (FEA) is used to calculate the accurate temperature distribution. Core losses are coupled directly into thermal calculation by keeping the same hexahedral mesh structure between magnetic field analysis and thermal analysis. These methods are applied to a 2 kW, 20 krpm high-speed claw pole motor with soft magnetic composite (SMC) core, and the results are compared and discussed finally.
Huang, Y, Zhu, J, Guo, Y & Hu, Q 1970, 'Development of a High-Speed Claw Pole Motor with Soft Magnetic Composite Core', 2007 IEEE International Electric Machines & Drives Conference, 2007 IEEE International Electric Machines & Drives Conference, IEEE, Antalya, Turkey, pp. 1564-1568.
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Soft Magnetic Composite (SMC) material is formed by surface-insulated iron powder particles, generating unique properties like magnetic and thermal isotropy, and very low eddy current. This paper presents the design and analysis of a high-speed claw pole motor with an SMC core for reducing core losses and cost. The analyses are conducted based on a comprehensive understanding of the property of SMC materials. Three dimensional (3-D) finite element analysis (FEA) is performed for accurate parameter calculation and dimension optimization. Considering the importance of core loss in high speed motors, rotational core loss model is employed. The design and analyze methods are validated by experiment on the prototype.
Hung, TQ, Tuan, HD & Nguyen, TQ 1970, 'Design of Diamond and Circular Filters by Semi-definite Programming', 2007 IEEE International Symposium on Circuits and Systems (ISCAS), 2007 IEEE International Symposium on Circuits and Systems (ISCAS), IEEE, New Orleans, USA, pp. 2966-2969.
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A new design for linear phase diamond-shaped (DS) and circular-shaped (CS) 2-D filters is developed. First, the frequency masks are efficiently constrained by 2-D second-order trigonometric polynomials. Then semi-definite program ming (SDP) of reasonably
Hung, TQ, Tuan, HD & Nguyen, TQ 1970, 'Design of Half-Band Diamond and Fan Filters by SDP', 2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07, 2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07, IEEE, Honolulu, HI, pp. 901-904.
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A new design method for linear phase half-band diamond (DS) and fan-shaped (FS) 2-D filters is proposed. A general formulation for frequency mask constraints in different shapes using 2-D trigonometric curves is developed. This facilitates semi-definite
Hung, TQ, Tuan, HD & Nguyen, TQ 1970, 'Optimization based design for 2-D nonseparable filters', Proceedings of the ISSAT International Conference on Modeling of Complex Systems and Environments, ISSAT International Conference on Modeling of Complex Systems and Environments, Int Soc Sci Appl Technol, Ho Chi Minh City, Vietnam, pp. 46-47.
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Husain, SI, Yuan, J & Zhang, J 1970, 'Effective Channel Shortening by Modified MSSNR Algorithm for Simplified UWB Receiver', 2007 IEEE International Conference on Communications, 2007 IEEE International Conference on Communications, IEEE, IEEE, pp. 2506-2510.
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Husain, SI, Yuan, J & Zhang, J 1970, 'Impulse response shortening through limited Time reversed channel in MB OFDM UWB systems', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, IEEE, pp. 1269-1273.
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Husain, SI, Yuan, J & Zhang, J 1970, 'Rake Performance after Channel Shortening by Decay Factor Optimization in UWB Channels', 2007 IEEE 66th Vehicular Technology Conference, 2007 IEEE 66th Vehicular Technology Conference, IEEE, IEEE, pp. 1204-1207.
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Hussain, FK, Chang, E & Hussain, OK 1970, 'State of the art review of the existing bayesian-network based approaches to trust and reputation computation', Second International Conference on Internet Monitoring and Protection (ICIMP 2007), Second International Conference on Internet Monitoring and Protection (ICIMP 2007), IEEE, pp. 26-30.
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In this paper we present a state of the art review of the bayesian-network based approaches for trust and reputation computation. We divide the bayesian network based approaches for trust and reputation computation into four different classes. Each of the four different classes is discussed in this paper. © 2007 IEEE.
Hussain, FK, Hussain, OK & Chang, E 1970, 'An overview of the interpretations of trust and reputation', 2007 IEEE Conference on Emerging Technologies & Factory Automation (EFTA 2007), 2007 IEEE Conference on Emerging Technologies & Factory Automation (EFTA 2007), IEEE, pp. 826-830.
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In this paper we present an overview of the definitions of the terms of trust and reputation from the literature. Trust and reputation have been defined in different ways by the various researchers. As a result of these various definitions of trust and reputation there is a lot of confusion regarding what these terms actually mean. Additionally in the literature there is no work towards collecting all the definitions of trust and reputation. In this paper we discuss and present an overview of the terms of trust and reputation from the literature. © 2007 IEEE.
Hussain, FK, Hussain, OK, Chang, E & IEEE 1970, 'An Overview of the interpretations of trust and reputation', ETFA 2007: 12TH IEEE INTERNATIONAL CONFERENCE ON EMERGING TECHNOLOGIES AND FACTORY AUTOMATION, VOLS 1-3, IEEE International Conference on Emerging Technologies and Factory Automation, IEEE, Patras, GREECE, pp. 826-830.
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In this paper we present an overview of the definitions of the terms of trust and reputation from the literature. Trust and reputation have been defined in different ways by the various researchers. As a result of these various definitions of trust and r
Hussain, FK, Hussain, OK, Chang, E & IEEE 1970, 'Illustrative example of determining Quality of Service (QoS) using trustworthiness measurement methodology', Proceedings of the 2007 IEEE International Conference on Service Operations and Logistics, and Informatics, IEEE International Conference on Service Operations and Logistics and Informatics, IEEE, Philadelphia, PA, pp. 530-535.
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In this paper we make use of a case study comprising of an interaction between a service provider and a service requestor to determine the quality of service (QoS) provided by the service provider. The trustworthiness measurement methodology is made use
Hussain, FK, Hussain, OK, Chang, E & IEEE 1970, 'Trustworthiness measurement methodology (TMM) for assessment purposes', Proceedings of the 2007 IEEE International Conference on Service Operations and Logistics, and Informatics, IEEE International Conference on Service Operations and Logistics and Informatics, IEEE, Philadelphia, PA, pp. 369-374.
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Quality assessment process is a very complex process. At the same time quality assessment is very vital and crucial for many business processes. In this paper we propose and explain trustworthiness measurement methodology, which is a generic method which
Hussain, FK, Hussain, OK, Chang, E & IEEE 1970, 'Trustworthiness measurement methodology (TMM) for assessment purposes', ICCC 2007: 5TH IEEE INTERNATIONAL CONFERENCE ON COMPUTATIONAL CYBERNETICS, PROCEEDINGS, IEEE International Conference on Computational Cybernetics, IEEE, Gammarth, TUNISIA, pp. 107-112.
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Quality assessment process is a very complex process. At the same time quality assessment is very vital and crucial for many business processes. In this paper we propose and explain trustworthiness measurement methodology, which is a generic method which
Hussain, O, Chang, E, Hussain, F & Dillon, T 1970, 'Quantifying the level of failure in a digital business ecosystem interactions', 2007 IEEE Conference on Emerging Technologies & Factory Automation (EFTA 2007), 2007 IEEE Conference on Emerging Technologies & Factory Automation (EFTA 2007), IEEE, Patras, GREECE, pp. 818-825.
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To ascertain the possible level of risk in a digital business ecosystem interaction, the initiating agent has to determine beforehand the probability of failure, the possible consequences of failure, and the loss of investment probability to its resource
Hussain, O, Chang, E, Hussain, F & Dillon, T 1970, 'Towards Quantifying the Possible Risk in e-commerce Interactions for RDSS', IEEE International Conference on e-Business Engineering (ICEBE'07), IEEE International Conference on e-Business Engineering (ICEBE'07), IEEE, Hong Kong, PEOPLES R CHINA, pp. 89-96.
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By analyzing the possible level of Risk beforehand the initiating agent can make an informed decision of its future course of interaction with an agent. The possible risk in the context of an e-commerce interaction is a multidimensional construct which i
Hussain, OK, Chang, E, Hussain, FK & Dillon, TS 1970, 'Ascertaining Risk in Financial Terms in Digital Business Ecosystem Environments', 2007 Inaugural IEEE-IES Digital EcoSystems and Technologies Conference, 2007 Inaugural IEEE-IES Digital EcoSystems and Technologies Conference, IEEE, pp. 296-301.
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In a digital business ecosystem environment the trusting agent by analysing beforehand the possible risk in interacting with a probable trusted agent, can make a better decision of its future course of interaction with it. A possible outcome of Risk is the loss to trusting agent's resources involved in the interaction. In a financial interaction, the possible loss that may be incurred is usually the monetary loss in the resources of the trusting agent that are involved in the interaction. In this paper, we propose a methodology by which the trusting agent can determine beforehand the possible Risk in financial terms or the possible loss to its resources as a result of interacting with a probable trusted agent. © 2007 IEEE.
Hussain, OK, Chang, E, Hussain, FK & Dillon, TS 1970, 'Determining the loss of investment probability for risk based decision support system', 6th IEEE/ACIS International Conference on Computer and Information Science, Proceedings, IEEE/ACIS International Conference on Computer and Information Science in Conjunction with 1st IEEE/ACIS International Workshop on, IEEE Computer Soc, Melbourne, AUSTRALIA, pp. 1129-1134.
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In an e-commerce interaction it is rational for the initiating agent to be apprehensive about the outcome of the interaction and fear for the safety of its resources involved in it. The initiating agent can alleviate this to a certain extent by determini
Hussain, OK, Chang, E, Hussain, FK & Dillon, TS 1970, 'Quantifying Failure for Risk Based Decision Making in Digital Business Ecosystem Interactions', Second International Conference on Internet and Web Applications and Services (ICIW'07), Second International Conference on Internet and Web Applications and Services (ICIW'07), IEEE.
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Due to technological advancement of the internet, conducting e-commerce transactions have become a part of our daily lives. In a financial interaction to be carried over the digital business ecosystem domain, it is rational for an agent instigating the interaction to analyse beforehand the possible risk in interacting with any other agent. Doing so would give the instigating agent an idea of direction in which its interaction might head and also help it to make an informed decision of its future course of action with that particular agent. For risk analysis, the instigating agent has to determine beforehand the probability of failure and the possible consequences of failure in interacting with an agent. In this paper, we propose such a methodology by which the instigating agent quantifies the probability of failure beforehand in interacting with an agent according to the demand of its future interaction with it. © 2007 IEEE.
Hussain, OK, Chang, E, Hussain, FK & Dillon, TS 1970, 'Quantifying the Possible Financial Consequences of Failure for making a Risk Based Decision', Second International Conference on Internet Monitoring and Protection (ICIMP 2007), Second International Conference on Internet Monitoring and Protection (ICIMP 2007), IEEE, p. 40.
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In a financial e-commerce interaction it is rational for the initiating agent to analyze beforehand the possible risk in interacting with any other agent. Doing so would give the initiating agent an idea of direction in which its interaction might head and also help it to make an informed decision of its future course of action with that particular agent. For risk analysis in the context of e-commerce interactions, the initiating agent has to determine beforehand the probability of failure and the possible consequences of failure in interacting with an agent. In this paper, we propose a methodology by which the initiating agent can determine beforehand the possible consequences of failure in its resources, according to the demand of its future interaction with an agent. © 2007 IEEE.
Hussain, OK, Chang, E, Hussain, FK, Dillon, TS & IEEE 1970, 'Ascertaining risk in financial terms in digital business ecosystem environments', 2007 INAUGURAL IEEE INTERNATIONAL CONFERENCE ON DIGITAL ECOSYSTEMS AND TECHNOLOGIES, IEEE International Conference on Digital Ecosystems and Technologies, IEEE, Cairns, AUSTRALIA, pp. 594-599.
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In a digital business ecosystem environment the trusting agent by analysing beforehand the possible risk in interacting with a probable trusted agent, can make a better decision of its future course of interaction with it. A possible outcome of Risk is t
Hussain, OK, Chang, E, Hussain, FK, Dillon, TS & IEEE 1970, 'Quantifying the loss in resource benefit for risk based decision in digital business ecosystem', 2007 IEEE INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS, PROCEEDINGS, VOLS 1-8, IEEE International Symposium on Industrial Electronics, IEEE, Vigo, SPAIN, pp. 2917-2922.
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In a financial digital business ecosystem, the trusting agent by analyzing beforehand the possible risk in interacting with a probable trusted agent can make a better decision of its future course of interaction with it. Another factor that would help th
Huynh, BP 1970, 'Convective Cooling of an Extrudate', Volume 1: Symposia, Parts A and B, ASME/JSME 2007 5th Joint Fluids Engineering Conference, ASMEDC, San Diego, California, USA, pp. 1713-1722.
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Convective heat transfer about an isothermal, cylindrical extrudate of constant diameter, issuing continuously from an extrusion die, is investigated numerically, using a commercial CFD software package. The hot extrudate is assumed to move vertically downward, thus giving rise to a combined regime of forced and free convection in the surrounding fluid. Prandtl number of 0.707, corresponding to air near standard conditions, is used. It is seen that when extrudate speed is very low, heat transfer decreases as speed is increased. However this trend is reversed at higher extrudate speed. Flow pattern in the ambient fluid, and effects of Rayleigh number on the extrudate’s heat transfer, will also be presented.
Huynh, BP 1970, 'Cooling by free convection at high Rayleigh number of cylinders positioned above a plane', Proceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC, Australasian Fluid Mechanics Conference, School of Engineering, The University of Queensland, Gold Coast, Australia, pp. 654-658.
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Free convection cooling of isothermal circular cylinders positioned above a horizontal plane is investigated numerically, using a commercial Computational Fluid Dynamics (CFD) software package. Computation is performed for high Rayleigh number, in the range 109 - 1011. Chien's turbulence model of low-Reynolds-number K-e is used, with Prandtl number of 0.707, corresponding to air near standard conditions. Influence of the underlying plane on heat transfer from the cylinders' surface is examined. As the gap between the plane and cylinders is narrowed, a pattern can be seen whereby heat transfer reaches a minimum that moves closer to the cylinder surface with higher Rayleigh number. The plane's thermal condition, adiabatic versus isothermal, produces no significant difference in the heat transfer for the present range of gap ratio, in contrast to laminar case.
Indraratna, B, Golab, A, Glamore, W & Blunden, B 1970, 'Acid sulphate soil remediation techniques on the Broughton Creek Floodplain, New South Wales, Australia', Geotechnical and Environmental Aspects of Waste Disposal Sites - Proceedings of Green4 International Symposium on Geotechnics Related to the Environment, pp. 349-357.
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One-way floodgates were commonly installed on flood mitigation drains in coastal areas of Australia during the late 1960s. In acid sulphate soil affected regions, the floodgates create reservoirs of acidic water that discharge at low tide. Several successful remediation techniques have been used in south-eastern NSW, Australia. Groundwater elevation and quality were monitored and modelled using finite element software and fixed level v-notch weirs were installed at three elevations in a drain. The weirs successfully maintained the groundwater elevation above the acid sulphate soil layer and reduced the acid discharge rate to the drain. Following geochemi-cal modelling, modified two-way floodgates that allow tidal ingress were installed. The modified floodgates buffer the drain water pH before discharging into adjacent waterways. Monitoring proved that saline intrusion into the surrounding soil from the drains was not a major concern for the pastureland or other agricultural activities. © 2007 Taylor & Francis Group, London.
Indraratna, B, Rujikiatkamjorn, C & Chu, J 1970, 'Soft Clay Stabilization with Geosynthetic Vertical Drains beneath Road and Railway Embankments: A Critical Review of Analytical Solutions and Numerical Analysis', Advances in Measurement and Modeling of Soil Behavior, Geo-Denver 2007, American Society of Civil Engineers, p. 7.
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In the wide array of existing ground improvement schemes, the use of vertical drains with vacuum preloading is considered as the most effective and economical method for improving soft clays (normally consolidated to lightly over-consolidated) prior to construction of infrastructure. Vertical drains installed to significant depths promote radial flow inducing consolidation rapidly enhancing the shear strength of the compressed ground. In this paper, the analytical solutions based on lateral soil permeability (parabolic variation) are discussed considering the variation of vacuum pressure with depth along the prefabricated vertical drains (PVD). Using the Cavity Expansion Theory (CET), the smear zone caused by the installation of PVD by steal mandrel was predicted and compared with laboratory measurements obtained from large-scale radial consolidation tests. The effects of drain unsaturation and vacuum pressure along the drain length are also discussed. The numerical analyses incorporating equivalent plane strain solutions were performed to predict the soil responses based on two selected case histories in Thailand. The research findings provided insight as to which of the above aspects needed to be simulated accurately in numerical modelling. The application of cyclic loading on PVD stabilized ground was also examined using a finite element approach under railway embankment. It is demonstrated that short drains less than 8 m installed beneath tracks are still useful for effective dissipation of cyclic pore pressures and curtailing unacceptable lateral movement immediately below the track level, at the same time avoiding excessive settlement of the track in the short-term. Copyright ASCE 2007.
Indraratna, B, Rujikiatkamjorn, C, Wijeyakulasuriya, V, Shahin, MA & Christie, D 1970, 'Soft soil stabilisation with special reference to road and railway embankments', Proceedings of the 4th International Conference on Soft Soil Engineering - Soft Soil Engineering, 4th International Conference on Soft Soil Engineering, TAYLOR & FRANCIS LTD, Vancouver, CANADA, pp. 35-55.
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Much of Australian railway tracks traverse coastal areas containing soft soils and marine deposits. Pre-construction stabilization of soft formation soils by applying a surcharge load alone often takes too long. The installation of prefabricated vertical drains (PVDs) can reduce the preloading period significantly by decreasing the drainage path length, sometimes by a factor of 10 or more. The analytical solution based on actual radial soil permeability is proposed considering the variation of vacuum pressure, and the Cavity Expansion Theory is employed to predict the smear zone caused by the installation of mandrel driven vertical drains. The predicted smear zone and the effect of drain unsaturation are compared with data obtained from a large-scale radial consolidation tests and the results are explained. When a higher load is required to meet the desired rate of settlement and the cost of surcharge is also significant, the application of vacuum pressure with reduced surcharge loading can be used. In this method, an external negative load is applied to the soil surface in the form of vacuum pressure through a sealed membrane system. The applied vacuum pressure generates negative pore water pressure, resulting in an increase in effective stress and accelerated consolidation, also avoiding the need for a high surcharge embankment. The analytical and numerical analyses incorporating the authors' equivalent plane strain solution for both Darcian and non-Dracian flow are conducted to predict the excess pore pressures, lateral and vertical displacements and several selected case histories are analysed and presented. Cyclic loading of PVDs is also examined in the laboratory in a manner appropriate for railway environments. It is shown that short PVDs can dissipate excess pore pressure as fast as they are built up under repeated loading conditions. The research findings verify that the impact of smear and vacuum pressure can significantly affect soil consolid...
Ip, K, Thomas, P, Stuart, BH & Ray, AS 1970, 'Thermal characterisation of the clay binder of heritage Sydney sandstone', Medicta 2007: The 8th Mediterranean Conference on Calorimetry and Thermal Analysis Book of Abstracts, 8th Mediterranean Conference on Calorimetry and Thermal Analysis, Palermo.
Isik, O, Esselle, KP & Ge, Y 1970, 'Compact microstrip and CPW duplexers using complementary and conventional logarithmic spiral resonators', 2007 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, VOLS 1-12, IEEE Antennas-and-Propagation-Society International Symposium, IEEE, Honolulu, HI, pp. 4525-4528.
Iu, HHC, Ling, SH, Lu, DDC & IEEE 1970, 'Comparative study of bifurcation boundry in parallel-connected buck converters under democratic current-sharing control', 2007 AUSTRALASIAN UNIVERSITIES POWER ENGINEERING, VOLS 1-2, Australasian Universities Power Engineering Conference (AUPEC), IEEE, Curtin Univ Technol, Perth, AUSTRALIA, pp. 359-363.
Jarman, R & Willey, K 1970, 'Benchmarking Capstone Projects in UTS Faculty of Engineering', ATN EVALUATION AND ASSESSMENT Conference, ATN Assessment Conference, Queensland University of Technology, Brisbane, Australia, pp. 45-57.
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UTS:Engineering Capstone Projects are undertaken in the final semester(s) of study and provide an opportunity for students to demonstrate a capacity to perform at the levels expected of a professional engineer. In many cases, students undertake projects in their workplace environment affording a rich context to integrate real-world problems and solutions with academic rigour. The existing subject requirements have remained relatively unchanged for over 10 years; there is negligible evidence of the impact of its introduction and only anecdotal evidence of its effectiveness as a âcapstoneâ subject. Further, project supervisors have expressed their concern regarding a drop in quality of project work â and its assessment. Some students opt for âsofterâ project topics, moderation of assessment criteria across Faculty staff is problematic, and there is a lack of adequate evaluation (feedback) data from students to inform improvement strategy. As changes to subject requirements are being introduced in Spring 2007, a benchmarking exercise is timely. This paper will present the pertinent outcomes from a detailed evaluation undertaken by 85 capstone project students in Autumn semester 2007. Students were asked to self-evaluate on a 0-5 scale the âapplicabilityâ and their âcapacity to demonstrate in their project work each of 61 competency indicators chosen from Engineers Australia Stage 1 Competency Standards. The outcomes will serve as a valuable guide for areas of improvement as well as a benchmark against which future change can be measured.
Jay Guo, Y 1970, 'Cover', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE.
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Jia, W & Tien, D 1970, 'Discovering local cooccurring patterns from aerial images', Fourth International Conference on Information Technology and Applications, ICITA 2007, International Conference on Information Technology and Applications, Macquarie Scientific Publishing, Sydney, Australia, Harbin, China, pp. 300-305.
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Developing a spatial searching engine to enhance the search capabilities of large spatial repositories for GIS update has attracted more and more attention. Existing methods are usually designed to extract limited types of objects and use only one aspect of features of Images. In this paper, we propose to use the local cooccurring patterns to disclose the cooccurring relationships among each dominant local features and use this local cooccurring patterns to recognize an object from aerial images. For this purpose, we investigate three types of local features: colour-based features, texture-based features, and edgebased shape features. In order to facilitate the feature extraction procedure, we first use discontinuity-preserving smoothing methods to filter the input image. Two popular smoothing techniques are tested and compared. Experimental results are presented in this paper.
Jia, W, He, S, Zhang, H & Wu, Q 1970, 'Combining Edge and Colour Information for Number Plate Detection', Proceedings of Image and Vision Computing New Zealand 2007, Image and Vision Computing Conference, Image and Vision Computing New Zealand, Hamilton, New Zealand, pp. 227-232.
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This paper presents a method for vehicle number plate detection which combines edge and colour features of number plates. We concentrate on two key issues of this application: speed and robustness. Our focus is put on detecting parts of a number plate, instead of the number plate itself as a whole. To achieve the target of real-time detection, two simple features based on a rede¯ned vertical edge map are constructed. To address the illumination-sensitive problem of using colour information, a Gaussian weighted histogram intersection (GWHI) method is proposed. The above new ideas compose the major part of the algorithm. Our experimental results demonstrate a promising preliminary result on detecting yellow number plates in terms of detection speed and robustness, which shows the feasibility of the proposed method.
Jia, W, Tien, D, He, X, Hope, BA & Wu, Q 1970, 'Advances in Visual Information Systems', Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), International Conference on Visual Information Systems, Springer Berlin Heidelberg, Shanghai, China, pp. 478-489.
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Developing a spatial searching tool to enhance the search car pabilities of large spatial repositories for Geographical Information System (GIS) update has attracted more and more attention. Typically, objects to be detected are represented by many local features or local parts. Testing images are processed by extracting local features which are then matched with the object's model image. Most existing work that uses local features assumes that each of the local features is independent to each other. However, in many cases, this is not true. In this paper, a method of applying the local cooccurring patterns to disclose the cooccurring relationships between local features for object detection is presented. Features including colour features and edge-based shape features of the interested object are collected. To reveal the cooccurring patterns among multiple local features, a colour cooccurrence histogram is constructed and used to search objects of interest from target images. The method is demonstrated in detecting swimming pools from aerial images. Our experimental results show the feasibility of using this method for effectively reducing the labour work in finding man-made objects of interest from aerial images. © Springer-Verlag Berlin Heidelberg 2007.
Jiang, ZY, Xie, HB, Yang, LM, Zhu, HT, Wei, DB & Tieu, AK 1970, 'Mechanics of Asymmetric Rolling of Thin Strip with Effect of Work Roll Edge Contact', Materials Science Forum, 6th Pacific Rim International Conference on Advanced Materials and Processing, Trans Tech Publications, Ltd., Cheju Isl, SOUTH KOREA, pp. 115-118.
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Asymmetric rolling of thin strip has become important due to a significant decrease ofrolling force, which contributes to obtain the extremely thin strip, to reduce the rolling passes, andto save the energy by a decrease of anneal treatment. In asymmetric rolling of thin strip, edges ofwork rolls may contact and deform when no or small work roll bending force is applied. Work rolledge contact forms a new deformation feature. In this paper, the effects of initial thickness of stripand friction coefficient on the rolling pressure, roll edge contact length and strip crown duringasymmetric rolling of thin strip with work roll edge contact effect has been discussed, and thecalculated rolling force with work roll edge contact is compared with the measured value.
Jiang, ZY, Zhu, HT, Wei, DB & Tieu, AK 1970, 'Asymmetric Cold Rolling of Thin Strip with Roll Edge Kiss', 2007 2nd IEEE Conference on Industrial Electronics and Applications, 2007 2nd IEEE Conference on Industrial Electronics and Applications, IEEE, Harbin, PEOPLES R CHINA, pp. 2781-2786.
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Asymmetric rolling can reduce the thickness of rolled strip and rolling load significantly. In this paper, the asymmetric cold rolling of thin strip with roll edge kiss was analysed theoretically and the rolling pressure, intermediate force between the work roll and backup roll, the work roll edge kiss force, the strip profile after rolling are obtained for this special asymmetric rolling. The rolling pressure, intermediate force, roll edge kiss force and the strip profile are compared for various roll speed ratios, reduction and friction coefficients. Simulation result shows that the roll speed ratio and reduction have a significant influence on the profile of rolled strip, and the calculated rolling forces are consistent with the measured values. The effect of friction in the roll bite on mechanics of the asymmetric cold rolling of thin strip with roll edge kiss is also discussed.
Jiang, ZY, Zhu, HT, Wei, DB & Tieu, AK 1970, 'Mechanics of a Special Asymmetric Rolling of Thin Strip', Key Engineering Materials, 8th Asia-Pacific Symposium on Engineering Plasticity and Its Applications (AEPA 2006), Trans Tech Publications, Ltd., Nagoya Univ, Nagoya, JAPAN, pp. 707-712.
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Asymmetric rolling is used to produce thinner strip, which can reduce rolling forcesignificantly. When a thinner strip is rolled on a rolling mill, work roll edge may contact each other,which affects the mechanics of this special asymmetric rolling and the crown of the rolled strip. Inthis paper, the authors developed a numerical model to simulate this special rolling and obtained therolling force, intermediate force, roll edge contact force, the crown of the rolled strip and the edgecontact length. The effects of the initial thickness of strip and the friction variation at upper andlower work rolls on the rolling force and crown of the rolled strip are also discussed.
Jiangfeng Zhang & Xiaohua Xia 1970, 'Best switching time of hot water cylinder-switched optimal control approach', AFRICON 2007, AFRICON 2007, IEEE, Windhoek, NAMIBIA, pp. 436-441.
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Jian-Zhou Wang, Liang Wu & Hai-Yan Lu 1970, 'Special periods peak load analysis and superior forecasting method based on LS-SVM', 2007 International Conference on Wavelet Analysis and Pattern Recognition, 2007 International Conference on Wavelet Analysis and Pattern Recognition, IEEE, Crowne Plaza Hotel, Beijing, China, pp. 249-253.
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People often try to smooth or eliminate load outliers all together in traditional power load forecasting. This, however, could result in the loss of important hidden information. In other words, the power load outliers themselves may be particular important. Hence there is a beforehand estimate to change and characteristic of power load, especially in power load outliers or peak load, is a precondition of power system carry through economy dispatch, reduce production cost and prevent widespread blackout or collapse on electric system. In this paper propose a novel method for special periods power peak load detection, mining and forecasting. It incorporates the characteristic of high level load and maximum peak load analysis with optimum forecasting algorithm based on support vector machine. The validity of the method is proved by real data calculation. © 2007 IEEE.
Jiaxin Chen, Jianguo Zhu & Youguang Guo 1970, 'A 2-D nonlinear FEA tool embedded in Matlab/Simulink surrounding for application of electromagnetic field analysis in power converters', 2007 International Conference on Electrical Machines and Systems (ICEMS), 2007 International Conference on Electrical Machines and Systems, IEEE.
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Jiaxin Chen, Jianguo Zhu & Youguang Guo 1970, 'A unified hybrid model with two level networks for peak current mode controlled buck-boost converters operating in DCM and CCM', 2007 International Conference on Electrical Machines and Systems (ICEMS), 2007 International Conference on Electrical Machines and Systems, IEEE.
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Jiaxin Chen, Jianguo Zhu & Youguang Guo 1970, 'Modeling and performance analysis of energy regeneration system in electric vehicle with permanent magnet DC motor driving system', 2007 International Conference on Electrical Machines and Systems (ICEMS), 2007 International Conference on Electrical Machines and Systems, IEEE.
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Jiaxin Chen, Youguang Guo & Jianguo Zhu 1970, 'A general method for designing the transformer of flyback converters based on nonlinear FEA of electromagnetic field coupled with external circuit', 2007 International Conference on Electrical Machines and Systems (ICEMS), 2007 International Conference on Electrical Machines and Systems, IEEE.
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Jie Zhao, Xiaojing Huang & Dutkiewicz, E 1970, 'Dynamic bandwidth MCIDS - a cognitive solution for MCIDS based UWB communications', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, Sydney, Australia, pp. 1502-1506.
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Dynamic bandwidth multicode interleaved direct sequence (MCIDS), an enhanced MCIDS based Ultra-wideband (UWB) application is proposed in this paper, featuring a cognitive transmission bandwidth adaptation without any adverse effect on the data rate. By introducing a specific lowpass filtering and down-sampling into the traditional MCIDS algorithm, this system can decrease the transmission bandwidth into part of its original bandwidth but still be able to recover all the transmitted data from the reduced bandwidth. This solution can efficiently improve the coexistence ability of UWB devices in a cognitive manner without increasing hardware complexity. © 2007 IEEE.
Jihua Zhou, Dutkiewicz, E, Di Pang, Jinlong Hu & Jinglin Shi 1970, 'Optimizing initial ranging region allocation in IEEE 802.16 OFDMA systems', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, pp. 178-183.
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The IEEE 802.16 standard has been developed for metropolitan broadband wireless access systems. As part of the standard, the random access scheme is used for initial ranging. The ratio between the numbers of initial ranging slots and data slots in the uplink subframe decides the contention throughput, access delay and data throughput. However, no specific ratio is standardized in the protocol, so it is still necessary to determine the optimal number of initial ranging slots which is the decisive factor of the ratio. In this paper, we analyze the three parameters above, contention throughput, access delay and data throughput, each of which can be expressed as a function of the number of initial ranging slots. In addition, we define an objective function and derive the exact equation of the optimal number of ranging slots. Based on the equation, we propose an optimal dynamic controller to allocate the initial ranging region In the uplink subframe. We also propose an estimation scheme to obtain the number of contention users using Newton Iteration method. To verify the correctness of the analysis and the efficiency of the controller, we conduct extensive simulations. The simulation and analytical results match very well. The results show that good system performance can be achieved with the optimal dynamic controller. © 2007 IEEE.
Jin, J, Guo, Y, Chen, J, Zheng, L & Zhu, J 1970, 'HTS levitation and transportation with linear motor control', PROCEEDINGS OF THE 26TH CHINESE CONTROL CONFERENCE, VOL 6, 26th Chinese Control Conference, BEIJING UNIV AERONAUTICS & ASTRONAUTICS PRESS, Zhangjiajie, PEOPLES R CHINA, pp. 10-+.
Jin, J, Zheng, L, Wen, J, Guo, Y, Chen, J & Zhu, J 1970, 'HTS Levitated Mobile Technology and Prototype', 2007 IEEE International Conference on Integration Technology, 2007 IEEE International Conference on Integration Technology, IEEE, Shenzhen, China, pp. 47-51.
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The special reaction phenomenon of a high temperature superconductor (HTS) to magnetic fields provides an alternative technical solution for design of a levitated mobilization system, in which a linear motion drive with a HTS incorporated is a critical issue. This work presents the design and performance analysis of a HTS linear synchronous driving system with a prototype built for verification. Magnetic field finite element analyses are conducted to compute the key parameters, and the steady state characteristic of the system is predicted by using the classic phasor voltage equation. A simulation model is also built to analyze the system dynamic performance, and results show that the levitated HTS mobilization system developed can be driven and controlled at the desired speed.
Jin, JX, Zhang, JL, Guo, YG, Zhan, YD & Zhu, JG 1970, 'Next generation of DC power transmission technology using High T<inf>c</inf> superconducting cables', 2007 Australasian Universities Power Engineering Conference, 2007 Australasian Universities Power Engineering Conference (AUPEC), IEEE, Perth, Australia, pp. 205-210.
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Jin, JX, Zhang, JL, Guo, YG, Zhan, YD & Zhu, JG 1970, 'Next generation of DC power transmission technology using high T-c superconducting cables', 2007 AUSTRALASIAN UNIVERSITIES POWER ENGINEERING, VOLS 1-2, Australasian Universities Power Engineering Conference (AUPEC), IEEE, Curtin Univ Technol, Perth, AUSTRALIA, pp. 135-+.
Johnston, A, Marks, B & Candy, L 1970, 'Sound controlled musical instruments based on physical models', International Computer Music Conference, ICMC 2007, International Computer Music Conference, International Computer Music Association, Copenhagen, Denmark, pp. 232-239.
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This paper describes three simple virtual musical instruments that use physical models to map between live sound and computer generated audio and video. The intention is that this approach will provide musicians with an intuitively understandable environment that facilitates musical expression and exploration. Musicians live sound exerts 'forces' on simple mass-spring physical models which move around in response and produce sound. Preliminary findings from a study of musicians' experiences using the software indicate that musicians find the software easy to understand and interact with and are drawn to software with more complex interaction-even though this complexity can reduce the feeling of direct control.
Johnston, AJ & Marks, B 1970, 'Partial reflections', Proceedings of the 6th ACM SIGCHI conference on Creativity & cognition - C&C '07, the 6th ACM SIGCHI conference, ACM Press, Washington, DC, USA, pp. 257-258.
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In this paper we describe two interactive virtual musical instruments that are controlled by sound. These instruments are based on virtual physical models that can be pushed and prodded by making sounds into a microphone. These models provide a mapping between acoustic sounds and computer generated sounds and visuals.
Jupp, J, Langdon, P & Godsill, S 1970, 'Mobile Computing in Maintenance Activities: A ’Situational Induced Impairments and Disabilities’ Perspective', Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Springer Berlin Heidelberg, pp. 696-705.
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This paper examines the context of mobile computing within facilities maintenance activities on the basis of an analysis of cursor movement and point and click disruptions that may occur when a number of perturbations are induced by the computing environment. An analysis based on context-aware computing distinguishes between situational induced impairments and disabilities (SIID) whose properties are related to Health Induced Impairments and Disabilities (HIID) such as motion impairment, tremor or spasm. A number of technology solutions based on Assistive Technology interventions for motion impaired cursor movement stabilization are possible approaches to counter SIID in Mobile computing for maintenance environments. A software based cursor movement smoothing method based on statistical state space filtering is presented as an example of a new development of one such approach. © Springer-Verlag Berlin Heidelberg 2007.
Kalam, MA, Masjuki, HH, Haseeb, ASMA, Redzuan, MA & Syazly, M 1970, 'Friction and wear characteristics of biodiesel contaminated lubricants', Society of Tribologists and Lubrication Engineers - 62nd Annual Meeting of the Society of Tribologists and Lubrication Engineers 2007, pp. 1001-1003.
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Three samples were explicitly prepared as Sample A - normal lubricant SAE4O grade, Sample B - consists of SAE4O grade with 0.5% additive (Amine phosphate), and Sample C - consists of SAE4O grade with 0.5% additive (octylated/butylated diphenylamine). Each of the samples was contaminated with biodiesel from 1 to 5% and evaluated as a biodegradable lubricant to be used for biodiesel fuelled engines. Based on four ball testing, palm oil diesel based lubricant showed promising result as compared to conventional lubricant. For sample C, coefficient of friction (COF) increased from 0.8 to 0.24 with the increase of load from 50 to 90 kg. However, the samples A and B showed lower COF throughout the load range. The additive (0.5% octylated/butylated diphenylamine) had an adverse effect on COF. Increasing percentage of POD did not have much affect on COF as all the samples showed almost constant level of COF in their individual trend. Thus, palm oil diesel could be used as additive in the developing of new biodegradable lubricant. The sample C showed some fluctuation of COF as compared to samples A and B. This is an abstract of a paper presented at the Society of Tribologists and Lubrication Engineers - 62nd Annual Meeting of the Society of Tribologists and Lubrication Engineers 2007 (Philadelphia, PA 5/6-10/2007).
Kandasamy, JK & Vigneswaran, S 1970, 'Constructed Wetlands for Wastewater and Stormwater Management', Current Issues on Wetland Conservation in Asia: In View of the Upcoming COP10, International Symposium on Regional Wetlands Issues In Asia, Daewoong, Bugok, South Korea, pp. 60-70.
Kang, DJ & Dyson, LE 1970, 'Internet politics in south korea: The case of rohsamo and ohmynews', ACIS 2007 Proceedings - 18th Australasian Conference on Information Systems, Australasian Conference on Information Systems, Univeristy of Southern Queensland, University of Southern Queensland, Toowoomba, pp. 1027-1034.
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This paper examines the impact of the Internet on politics in South Korea. Many have noted the Internet's political potential due to its versatile nature as a communication medium. However, recent studies are beginning to show the influence of the Internet to be more moderate than expected initially. South Korea represents a very interesting case because of its extremely high Internet penetration rate and its youthful democracy. Two specific cases - a political fan-club called 'Rohsamo' and the Internet news medium 'Ohmynews' - have attracted particular attention mainly because of their perceived pivotal role in the 2002 presidential election. In this paper the part played by Rohsamo and Ohmynews in Korean politics is examined. While the research does not support claims which place the Internet as a revolutionary political force, it shows that the Internet has the potential to be a major player in South Korean politics. © 2007 Daniel Jisuk Kang and Laurel Evelyn Dyson.
Kang, K 1970, 'Adopting Culture in E-Business - A Global Aspect', Expanding the Knowledge Economy: Issues, Applications, Case Studies, eChallenges, IOS Press, The Hague, Netherlands, pp. 170-176.
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This paper presents an investigation of user preferences in global web sites. This study was important to establish an understanding of the barriers in implementing of e-commerce on a global level. The paper begins with an overview of current business-to customer (B2C) e-commerce sites on the web, and then describes cultural issues in the global e-commerce. The paper also discusses innovative design ideas that are currently being used extensively to attract customers and increase e-commerce organisations presence in the global markets.
Kang, K 1970, 'Considering Cultural Issues in E-Business Solutions', The 2nd IEEE Asia-Pacific Service Computing Conference (APSCC 2007), The 2nd IEEE Asia-Pacific Service Computing Conference (APSCC 2007), IEEE.
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Kang, K 1970, 'Considering Cultural Issues in E-Business Solutions', The 2nd IEEE Asia-Pacific Service Computing Conference (APSCC 2007), The 2nd IEEE Asia-Pacific Service Computing Conference (APSCC 2007), IEEE, pp. 33-39.
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This paper addresses cultural issues in E-business solutions. The study explores the preferences of users based on two different culture groups. The paper commenced with the current e-commerce practice of e-commerce implementation on a global level. A survey was conducted to find Australian and Korean users' experiences on global business-to customer (B2C) e-commerce sites. One of the key findings is that different culture background users have dissimilar preferences and purposes of using sites. © 2007 IEEE.
Kannapiran, A, Jeyakumaran, JM, Chanan, AP, Kandasamy, JK, Singh, G, Tambosis, P & Al-Jumaily, A 1970, 'Asset Management of Stormwater System using Fuzzy Logic', The Eighth International Conference on Intelligent Technologies (InTech-07), International Conference on Intelligent Technologies, University of Technology, Sydney, Sydney, Australia, pp. 182-188.
Kazuto Nishi, Shingo Yoshizawa & Yoshikazu Miyanaga 1970, 'A study of dynamic reconfigurable FFT processor for OFDM based cognitive radio', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE.
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Kejalakshmy, N, Kabir, AKMS, Thakur, GM, Agrawal, A, Rahman, BMA & Grattan, KTV 1970, 'Characterization of single-mode and single-polarization photonic crystal fibers by using a full-vectorial finite element approach', SPIE Proceedings, Optics East 2007, SPIE.
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Kha, HH, Tuan, HD & Nguyen, TQ 1970, 'An Efficient SDP Based Design for Prototype Filters of M-Channel Cosine-Modulated Filter Banks', 2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07, 2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07, IEEE, Honolulu, HI, pp. 893-896.
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The paper presents an efficient semidefinite programming (SDP) based design for prototype filters of cosine-modulated filter banks (CMFBs). We consider a class of near-perfect reconstruction CMFBs with the linear phase prototype filter, which structurall
Kha, HH, Tuan, HD & Nguyen, TQ 1970, 'Design of Cosine-Modulated Pseudo-QMF Banks Using Semidefinite Programming Relaxation', 2007 IEEE International Symposium on Circuits and Systems (ISCAS), 2007 IEEE International Symposium on Circuits and Systems (ISCAS), IEEE, New Orleans, USA, pp. 585-588.
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The paper proposes a new approach for the design of M-channel pseudo-quadrature mirror filter (QMF) banks. First, the convex hull of 2Mth band linear phase filters admitting linear phase spectral factors is analytically described by semidefinite programm
Kha, HH, Tuan, HD & Nguyen, TQ 1970, 'Optimal design of triplet halfband filter banks via Semidefinite Programming', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, Sydney, AUSTRALIA, pp. 243-+.
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This paper proposes a computationally efficient method for designing a class of triplet halfband filter banks. We show that the design of perfect reconstruction two-channel filter banks with arbitrary regularity order can be precisely formulated as a sem
Khawaja, MA, Ruiz, N & Chen, F 1970, 'Potential speech features for cognitive load measurement', Proceedings of the 19th Australasian conference on Computer-Human Interaction: Entertaining User Interfaces, OZCHI '07: Proceedings of the 19th conference of the computer-human interaction special interest group of Australia on Computer-human interaction: design, ACM, pp. 57-60.
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Intelligent user interfaces with an awareness of a user's experienced level of cognitive load have the potential to change the way output strategies are implemented and executed. However, current methods of measuring cognitive load are intrusive and unsuitable in real-time scenarios. Certain speech features have been shown to change under high levels of load. We present a dual-task speech based user study in which we explore three speech features: pause length, pause frequency and latency to response. These features are evaluated for their diagnostic capacity. Pause length and latency to response are shown to be useful indicators of high load versus low load speech.
Khosroshahi, ME, Enayati, M, shafiei, S & Tavakoli, J 1970, 'Evaluation of drug release from PLGA nanospheres containing bethametasone', Biophotonics 2007: Optics in Life Science, European Conference on Biomedical Optics, OSA.
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In this research poly (d,1-lactide-coglycolide acid) (PLGA) as polymeric nanospheres, polyvinyl alcohol) (PVA) with 87-89% hydrolysis degree as surfactant and distilled water as suspending medium were used. The encapsulated drug was Bethametasone. The nanospheres were prepared by an emulsion-solvent evaporation method. The nanospheres characterized by photon correlation spectroscopy (PCS) and scanning electron microscopy (SEM). The amount of drug release was determined by HPLC. In emulsion-solvent evaporation technique, time of ultrasound exposure, surfactant content in the formulation and evaporation rate of organic solvents were considered as formulation variables. © 2007 SPIE-OSA.
Kiani, GI, Esselle, KP, Weily, AR & Ford, KL 1970, 'Active frequency selective surface using PIN diodes', 2007 IEEE Antennas and Propagation Society International Symposium, 2007 IEEE Antennas and Propagation Society International Symposium, IEEE, pp. 4525-4528.
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A novel active frequency selective surface (FSS) is presented for 2.45 GHz applications. It consists of circular aperture elements with four PIN diodes placed orthogonal to each other on FR4 substrate. The negative dc biasing is provided with cross shaped supply lines from the reverse side of the substrate, while positive biasing is provided from the front side of printed circular structure. This active FSS design enables transmission to be switched on or off at 2.45 GHz, providing high transmission when the diodes are in OFF state, and high isolation when the diodes are ON. The design also provides very good stability to oblique TE incidence, i.e perpendicular polarisation. Preliminary theoretical results are described. ©2007 IEEE.
Kiani, GI, Esselle, KP, Weily, AR & Ford, KL 1970, 'Active frequency selective surface using PIN diodes', 2007 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, VOLS 1-12, IEEE Antennas-and-Propagation-Society International Symposium, IEEE, Honolulu, HI, pp. 4097-+.
Kiani, GI, Ford, KL, Esselle, KP & Weily, AR 1970, 'Oblique incidence performance of an active square loop frequency selective surface', 2nd European Conference on Antennas and Propagation (EuCAP 2007), 2nd European Conference on Antennas and Propagation (EuCAP 2007), Institution of Engineering and Technology.
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Oblique incidence performance of an active square loop frequency selective surface (FSS) is investigated. The design shows a stable frequency response for both parallel (TM) and perpendicular (TE) polarizations for incidence angles up to 60°. Four PIN diodes have been placed orthogonal to each other in the FSS unit cell to provide a stable frequency response for both TE and TM. To minimise the effect of bias lines on the overall frequency response, a diagonal DC bias line, which is connected to the centre of the FSS unit cell, has been placed on the rear surface of the dielectric substrate. The design has good isolation between transmission and reflection states, which are controlled electronically by switching PIN diodes between ON and OFF states. Preliminary theoretical results are described.
Kiani, GI, Karlsson, A, Olsson, L & Esselle, KP 1970, 'Glass Characterization for Designing Frequency Selective Surfaces to Improve Transmission through Energy Saving Glass Windows', 2007 Asia-Pacific Microwave Conference, 2007 Asia-Pacific Microwave Conference (APMC '07), IEEE.
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This paper reports initial work on creating frequency selective surfaces (FSS) on modern day glass windows to improve the transmission of wireless/mobile/cellular communication signals through the glass. The manufacturers of these glass windows apply very thin layers of metallic oxides on one side of glass to provide extra thermal insulation. These coatings block the infrared and ultraviolet waves to provide thermal insulation, but they also attenuate communication signlas such as GSM 900, GSM 1800/1900, UMTS and 3G mobile signals. This creates a major communication problem when buildings are constructed using mostly such type of glass. A bandpass FSS can provide a solution to increase the transmission of useful bands through the coated glass. In order to design an appropriate FSS, the relative permittivity and conductivity of glass should be measured accurately. Moreover, electrical properties of the coated layer must also be known in order to obtain a resonance in the desired band. In this work, we used two different methods of measuring the permittivity and conductivity of glass. Electrical properties of one of the common glass windows (Optitherm™ SN) are presented. Simulations of Optitherm glass shows about 35 dB transmission loss over 900 - 2200 MHz frequency band.
Kiani, GI, Karlsson, A, Olsson, L & Esselle, KP 1970, 'Glass Characterization for Designing Frequency Selective Surfaces to Improve Transmission through Energy Saving Glass Windows', 2007 ASIA PACIFIC MICROWAVE CONFERENCE, VOLS 1-5, Asia Pacific Microwave Conference, IEEE, THAILAND, Bangkok, pp. 1770-+.
Kim, J & Brambley, G 1970, 'Dual optic-flow integrated navigation for small-scale flying robots', Proceedings of the 2007 Australasian Conference on Robotics and Automation, ACRA 2007.
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This paper addresses the recent development of real-time visual odometry system based on a dual optical-flow system and its integration to an inertial navigation system aiming for small-scale flying robots. To overcome the unknown depth information in optic-flow, a dual optic-flow system is developed and tested. The flow measurements are fused with a low-cost inertial sensor using an extended Kalman filter. The experimental results in indoor environment will be presented showing improved navigational performances constraining errors in height, velocity and attitude.
Kim, S, Nguyen, V, Vigneswaran, S & Ngo, H 1970, 'Adsorption Equilibrium, Kinetics and Thermodynamics of Iron-coated Sponge (IOCSp) for Removal of As (III)', Proceedings of International Conference on Cleaner Technologies and Environmental Management (ICCTEM 200), International Conference on Cleaner Technologies and Environmental Management, Allied Publishers Pvt. Ltd., India, pp. 44-50.
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Kirchner, NG, Liu, D, Taha, T & Paul, G 1970, 'Capacitive Object Ranging and Material Type Classifying Sensor', Proceedings of the 8th International Conference on Intelligent Technologies (InTech), International Conference on Intelligent Technologies, University of Technology, Sydney, Sydney, Australia, pp. 130-135.
Kirchner, NG, Taha, T, Liu, D & Paul, G 1970, 'Simultaneous Material Type Classification And Mapping Data Acquisition Using A Laser Range Finder', Proceedings of the 8th International Conference on Intelligent Technologies (InTech), International Conference on Intelligent Technologies, University of Technology, Sydney, Sydney, Australia, pp. 124-129.
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This paper presents a method for single sensor simultaneous derivation of three-dimensional mapping data and material type data for use in an autonomous sandblasting system. A Hokuyo laser range finders firmware has been modified so that it returns intensity data. A range error and return intensity analyzing algorithm allows the material type of the sensed object to be determined from a set of known materials. Empirical results have demonstrated the systems ability to classify material type (under alignment and orientation constraints) from a set of known materials common to sandblasting environments (wood, concrete, metals with different finishes and cloth/fabric) and to successfully classify objects both when static and when fitted to an in-motion 6-DOF anthropomorphic robotic arm.
Kobayashi, M & Ito, T 1970, 'A Transactional Relationship Visualization System in Internet Auctions', 2007 IEEE/WIC/ACM International Conference on Intelligent Agent Technology (IAT'07), 2007 IEEE/WIC/ACM International Conference on Intelligent Agent Technology (IAT'07), IEEE, San Jose, pp. 72-75.
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Trading agents are very useful for developing and backtesting quality trading strategies for actions taking in the real world. However, the existing trading agent research mainly focuses on simulation using artificial data and market models. As a result, the actionable capability of developed trading strategies is often limited. In this paper, we analyze such constraints on developing actionable trading strategies for trading agents. These points are deployed into developing a series of trading strategies for trading agents through optimizing, and enhancing actionable trading strategies. We demonstrate working case studies in large-scale of market data. These approaches and their performance are evaluated from both technical and business perspectives.
Kodagoda, S, Alempijevic, A, Sehestedt, S & Dissanayake, G 1970, 'Towards improving driver situation awareness at intersections', 2007 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2007 IEEE/RSJ International Conference on Intelligent Robots and Systems, IEEE, San Diego, California, pp. 3739-3744.
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Providing safety critical information to the driver is vital in reducing road accidents, especially at intersections. Intersections are complex to deal with due to the presence of large number of vehicle and pedestrian activities, and possible occlusions. Information available from only the sensors onboard a vehicle has limited value in this scenario. In this paper, we propose to utilize sensors on-board the vehicle of interest as well as the sensors that are mounted on nearby vehicles to enhance the driver situation awareness. The resulting major research challenge of sensor registration with moving observers is solved using a mutual information based technique. The response of the sensors to common causes are identified and exploited for computing their unknown relative locations. Experimental results, for a mock up traffic intersection in which mobile robots equipped with laser range finders are used, are presented to demonstrate the efficacy of the proposed technique. ©2007 IEEE.
Kodagoda, S, Sehestedt, S, Alempijevic, A, Zhang, Z, Donikian, A & Dissanayake, G 1970, 'Towards an enhanced driver situation awareness system', 2007 International Conference on Industrial and Information Systems, 2007 International Conference on Industrial and Information Systems, IEEE, Sri Lanka, pp. 295-300.
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This paper outlines our current research agenda to achieve enhanced driver situation awareness. A novel approach that incorporates information gathered from sensors mounted on the neighboring vehicles, in the road infrastructure as well as onboard sensory information is proposed. A solution to the fundamental issue of registering data into a common reference frame when the relative locations of the sensors themselves are changing is outlined. A description of the vehicle test bed, experimental results from information gathered from various onboard sensors, and preliminary results from the sensor registration algorithm are presented. ©2007 IEEE.
Konstantynowicz, J, Nguyen, TV, Kaczmarski, M, Jamiolkowski, J, Piotrowska-Jastrzebska, J & Seeman, E 1970, 'A Milk-free diet contributes little to the high prevalence of fractures in childhood', Bone, 4th International Conference on Childrens Bone Health, Elsevier BV, Montreal, CANADA, pp. S57-S57.
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Kubiak, B, Pietroni, N, Ganovelli, F & Fratarcangeli, M 1970, 'A robust method for real-time thread simulation.', VRST, ACM, ACM, pp. 85-88.
Kwok, N, Carmichael, MG, Ha, QP & Tan, K 1970, 'Statistical decision based gray-level image feature matching', Proceedings of the 8th International Conference on Intelligent Technologies (InTech'07), International Conference on Intelligent Technologies, University of Technology Sydney, Sydney, Australia, pp. 269-274.
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Kwok, NM, Fang, G, Ha, QP & Liu, DK 1970, 'An enhanced particle swarm optimization algorithm for multi-modal functions', 2007 IEEE INTERNATIONAL CONFERENCE ON MECHATRONICS AND AUTOMATION, VOLS I-V, CONFERENCE PROCEEDINGS, IEEE International Conference on Mechatronics and Automation, IEEE, Harbin, Heilongjiang, China, pp. 457-462.
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The particle swarm optimization algorithm has been frequently employed to solve various optimization problems. Although the algorithm is performing satisfactorily while tackling unit-modal optimizations, enhancements in dealing with multi-modal functions are indeed desirable. Convergence of particles to the optimum solution is a primary and traditional requirement, however, this is achieved only after all the solutions space has been covered and evaluated. In this work, the focus is directed towards maintaining sufficient divergence of particles in multi-modal problems, by developing an alternative social interaction scheme among the swarm members. Particularly, a multiple-leaders strategy is employed in the new PSO algorithm to prevent pre-mature convergence. Results from benchmark problems are included to illustrate the effectiveness of the proposed method. © 2007 IEEE.
Kwok, NM, Ha, QP, Fang, G & IEEE 1970, 'Data association in bearing-only SLAM using a cost function-based approach', PROCEEDINGS OF THE 2007 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-10, IEEE International Conference on Robotics and Automation, IEEE, Roma, Italy, pp. 4108-4113.
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When using an extended Kalman filter (EKF) in simultaneous localization and mapping (SLAM) for a mobile robot with bearing-only measurements, it is crucial to correctly assign correspondences between measurements and registered features in the map, otherwise the filter diverges or becomes inconsistent. Conventional methods based on the Mahalanobis distance metric may produce data association ambiguities. Its reliability may further be degraded in bearing-only SLAM due to the limited amount of information delivered from the sensor. The data association process is cast here as that of making a decision based on the sensor measurement as whether to update the EKF or not. For this, cost functions are applied taking into account the interferences from other features. The proposed approach enhances robustness of the data association and consequently assures the performance of bearing-only SLAM. Results from simulations and experiments are included to demonstrate the effectiveness of the method in a typical indoor scenario.
Kwok, NM, Ha, QP, Liu, DK, Fang, G, Tan, KC & IEEE 1970, 'Efficient particle swarm optimization: A termination condition based on the decision-making approach', 2007 IEEE CONGRESS ON EVOLUTIONARY COMPUTATION, VOLS 1-10, PROCEEDINGS, IEEE Congress on Evolutionary Computation, IEEE, Singapore, pp. 3353-3360.
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Evolutionary computation algorithms, such as the particle swarm optimization (PSO), have been widely applied in numerical optimizations and real-world product design, not only for their satisfactory performances but also in their relaxing the need for detailed mathematical modelling of complex systems. However, as iterative heuristic searching methods, they often suffer from difficulties in obtaining high quality solutions in an efficient manner. Since unnecessary resources used in computation iterations should be avoided, the determination of a proper termination condition for the algorithms is desirable. In this work, termination is cast as a decision-making process to end the algorithm. Specifically, the non-parametric sign-test is incorporated as a hypothetical test method such that a quantifiable termination in regard to specifiable decision-errors can be assured. Benchmark optimization problems are tackled using the PSO as an illustrative optimizer to demonstrate the effectiveness of the proposed termination condition. © 2007 IEEE.
Kwok, NM, Ngo, VT & Ha, QP 1970, 'PSO-Based Cooperative Control of Multiple Mobile Robots in Parameter-Tuned Formations', 2007 IEEE International Conference on Automation Science and Engineering, 2007 IEEE International Conference on Automation Science and Engineering, IEEE, Scottsdale, Arizona, USA, pp. 332-337.
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This paper addresses the coordination of multiple mobile robots in navigation formations. Difficulties encountered in conventional leader-follower approaches, such as bounds on control commands and formation constraints are revealed. A generic control structure is then proposed, based on the leader-follower strategy and virtual robot tracking framework, to parameterize the formation configuration for cooperatively deploying the robots into desired patterns. In order to achieve both tracking accuracy and control feasibility, the design is further cast as a constrained optimization problem to obtain formation configuration parameters and controller parameters simultaneously. The particle swarm optimization (PSO) algorithm is used, owing to its computationally-efficient capability of handling multi-objective criteria. Satisfactory results obtained through simulation are included to illustrate the effectiveness of the proposed technique for a number of benchmark patterns.
Laeng, J, Xiu, Z, Xu, X, Sun, X, Ru, H & Liu, Y 1970, 'Phase formation of Ni–Ti via solid state reaction', Physica Scripta, IOP Publishing, pp. 250-254.
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Lalanne, D & van den Hoven, E 1970, 'Supporting Human Memory with Interactive Systems', Electronic Workshops in Computing, Proceedings of HCI 2007 The 21st British HCI Group Annual Conference University of Lancaster, UK, BCS Learning & Development, Lancaster, UK, pp. 215-216.
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The major goal of this workshop is to explore how interactive systems can support human memory, using novel technologies and innovative human/machine interaction paradigms, such as tangible interaction. We believe this is important since memory and attention are becoming critical resources for our wellness, e.g. with regard to a continuously increasing information overload. The goal of this workshop is not only to support personal information management but also daily life activities, e.g. adapted to user preferences and specific contexts. Where current multimedia search engines are designed for large user communities and their applications, this workshop targets the support of individual's personal memory in everyday life. © 2007, Denis Lalanne & Elise van den Hoven.
Lam, HK, Ling, SH, Iu, HHC, Yeung, CW, Leung, FHF & IEEE 1970, 'Control of nonlinear systems with a linear state-feedback controller and a modified neural network tuned by genetic algorithm', 2007 IEEE CONGRESS ON EVOLUTIONARY COMPUTATION, VOLS 1-10, PROCEEDINGS, IEEE Congress on Evolutionary Computation, IEEE, Singapore, SINGAPORE, pp. 1614-1619.
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Lau, H, Huang, S & Dissanayake, G 1970, 'Multi-agent search with interim positive information', 2007 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2007 IEEE/RSJ International Conference on Intelligent Robots and Systems, IEEE, San Diego, USA, pp. 3791-3796.
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A problem of searching with multiple searchers and scouts is presented. Unlike most search problems that terminate as soon as the target is found, successful detection by scouts only improve on the current knowledge of the moving target's location, such that the searchers can more effectively find and service the target in the future. The team must correspondingly plan not only to maximize the probability of the searchers directly finding the target, but also give them the best chance of exploiting any new information from potential scout detections. It is shown that this need to plan for replanning can be addressed by equivalently solving a series of simpler detection search problems that always do terminate on detection. Optimal and heuristic solution methods for this Searcher/Scout problem are derived, such that the capabilities of all the sensing platforms in a search task are harnessed even when only a subset are capable of actually servicing the target. ©2007 IEEE.
Lau, H, Huang, S & Dissanayake, G 1970, 'Multi-agent search with interim positive information', 2007 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS, VOLS 1-9, IEEE/RSJ International Conference on Intelligent Robots and Systems, IEEE, San Diego, CA, pp. 3797-3802.
Law, SS & Zhu, XQ 1970, 'Dynamic condition assessment of highway bridges including operational conditions', STRUCTURAL CONDITION ASSESSMENT, MONITORING AND IMPROVEMENT, VOLS 1 AND 2, 2nd International Conference on Structural Condition Assessment, Monitoring and Improvement (SCAMI-2), SCIENCE PRESS BEIJING, Changsha, PEOPLES R CHINA, pp. 393-399.
Lawrence, E, Zmijewska, A & Pradhan, S 1970, 'Mobile Payments: Partner or Perish?', Innovative Applications of Information Technology for the Developing World, Proceedings of the 3rd Asian Applied Computing Conference, PUBLISHED BY IMPERIAL COLLEGE PRESS AND DISTRIBUTED BY WORLD SCIENTIFIC PUBLISHING CO., Kathmandu, pp. 240-247.
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Le Roux, F, Ranjeet, E, Ghai, V, Gao, Y, Lu, J & PRess, A 1970, 'A course recommender system using multiple criteria decision making method', PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON INTELLIGENT SYSTEMS AND KNOWLEDGE ENGINEERING (ISKE 2007), International Conference on Intelligent Systems and Knowledge Engineering, Atlantis Press, Chengdu, China, pp. 346-350.
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A recommender system is a specific type of information filtering technique that presents the user-relevant information, which is implemented by creating a user's profile and comparing it to the other existing reference characteristics stored in the database. This paper developed a course recommender system capable of helping prospective students to choose relevant post graduate courses by multiple criteria decision making method. First, the multiple criteria decision making method was given. Then, the system prototype, which aimed at amalgamating the multiple criteria decision making model and the collaborative filtering recommendation system, was described. Finally the system architecture was illustrated
Lebbe, MA, Agbinya, JI, Chaczko, Z & Chiang, F 1970, 'Self-organized classification of dangers for secure Wireless Mesh Networks', 2007 Australasian Telecommunication Networks and Applications Conference, 2007 Australasian Telecommunication Networks and Applications Conference (ATNAC 2007), IEEE, Christchurch, New Zealand, pp. 1-6.
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This paper introduces danger theory in artificial immune system as a method of responding to danger in wireless mesh networks. It identifies the challenges in deploying Wireless Mesh networks (WMNs) and focus on secure routing as one of the key challenges in deploying WMNs. In order to implement a secure routing system, various Artificial Immune System (AIS) models were analysed. These models have been used in Intrusion Detection System (IDS) and computer security in the literature. In this paper, the authors propose to use Danger models to secure routing in WMNs. The first step in secure routing process is to identify and classify the network dangers and take necessary actions to overcome those dangers. For the classification task, we apply Self-organizing Maps (SOMs) as the classifier to classify the danger levels in WMNs. These identified danger conditions are further deployed as the warning signals for the design of secure routing protocol. The experimental results validate the proposal of applying the Danger Theory (DT) into security area and good performance is also reported by the use of Artificial Neural Network (ANN) classifier.
Lee, J, Zhu, Y & Seshia, A 1970, 'Sub-10e Charge Resolution for Room Temperature Electrometry', 2007 IEEE Sensors, 2007 IEEE Sensors, IEEE.
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Leijdekkers, P, Gay, V & Lawrence, E 1970, 'Smart Homecare System for Health Tele-monitoring.', ICDS, International Conference on Digital Society, IEEE Computer Society, Guadaloupe, French Carribean, pp. 3-3.
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An increasing aged population worldwide puts our medical capabilities to the test. Research and commercial groups are investigating novel ways to care for the aged and chronically ill both in their own homes and in care facilities. This paper describes a prototype we have developed for remote healthcare monitoring. This personalized smart homecare system uses smart phones, wireless sensors, web servers and IP webcams. To illustrate the functionality of the prototype we describe a series of typical tele-health monitoring scenarios
Leveaux, RR 1970, 'Fair Play and the Centre Referee: Can technology Provide a Fairer Platform for Competition', Fair Play and the Centre Referee: Can technology Provide a Fairer Platform for Competition, Dong A Press, Beijing, China, pp. 103-114.
Leveaux, RR 1970, 'Life Balance and Student Participation in a University Sports Club: An Australian Perspective', Life Balance and Student Participation in a University Sports Club: An Australian Perspective, FISU / UBOC, Thailand, pp. 455-460.
Li Li & Petersen, IR 1970, 'A Gramian-based approach to model reduction for uncertain systems', 2007 46th IEEE Conference on Decision and Control, 2007 46th IEEE Conference on Decision and Control, IEEE, New Orleans, USA, pp. 4373-4378.
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The paper considers the problem of model reduction for a class of uncertain systems with structured norm bounded uncertainty. The paper introduces controllability and observability Gramians in terms of certain parameterized algebraic Riccati inequalities. This enables a balanced trun-cation model reduction procedure for uncertain systems to be presented. Error bounds for this model reduction procedure are derived. The paper also investigates H ∞ model reduction for uncertain systems. The solution to this problem is shown to involve constructing the underlying Gramians satisfying a certain rank constraint. ©2007 IEEE.
Li Li & Petersen, IR 1970, 'A rank constrained LMI algorithm for the robust H<sup>∞</sup> control of an uncertain system via a stable output feedback controller', 2007 46th IEEE Conference on Decision and Control, 2007 46th IEEE Conference on Decision and Control, IEEE, New Orleans, Louisiana, pp. 5423-5428.
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The paper presents a numerical algorithm for constructing a stable output feedback controller for the robust H∞ control of an uncertain system. The uncertain systems under consideration contain structured uncertainty described by integral quadratic constraints. The controller is designed to achieve absolute stabilization with a specified level of disturbance attenuation. The main result gives an algorithm for constructing the desired controller in terms of LMIs subject to rank constraints. ©2007 IEEE.
Li Li & Ugrinovskii, VA 1970, 'Robust stabilization of LPV systems with structured uncertainty using minimax controllers', 2007 46th IEEE Conference on Decision and Control, 2007 46th IEEE Conference on Decision and Control, IEEE, New Orleans, LA, pp. 2767-2772.
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This paper addresses a robust control scheduling scheme for uncertain linear parameter-varying systems with structured uncertainty. A gain-scheduled controller is proposed which employs a set of minimax optimal robust controllers and incorporates an interpolation rule to achieve continuity of the controller gain over a range of operating conditions. Novel weighted time-domain integral quadratic constraints are introduced to assist in the derivation of the controller. The key idea of the interpolation for the structured uncertainty case is to transform the parameterized algebraic Riccati inequalities into equivalent linear matrix inequalities. For every fixed value of the system parameter, the proposed controller guarantees robust stability and a certain bound on the worst-case performance of the corresponding uncertain closed loop system. Furthermore, a bound on the rate of parameter variations is obtained under which the closed loop LPV system is robustly stable. To obtain the proposed controller, a set of semi-definite programming problems are introduced; this enables an efficient numerical solution to the problem under consideration. © 2007 IEEE.
Li, J & Hu, X 1970, 'Workshop BioDM'07 - An overview', Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 11th Pacific-Asia Conference on Knowledge Discovery and Data Mining, SPRINGER-VERLAG BERLIN, Nanjing, PEOPLES R CHINA, pp. 110-111.
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This edited volume contains the papers selected for presentation at the Second Workshop on Data Mining for Biomedical Applications (BioDM'07) held in Nanjing, China on 22nd of May 2007. The workshop was held in conjunction with the 11th Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD 2007), a leading international conference in the areas of data mining and knowledge discovery. The aim of this workshop was to provide a forum for discussing research topics related to biomedical applications where data mining techniques were found to be necessary and/or useful. © Springer-Verlag Berlin Heidelberg 2007.
Li, J, Choi, FC & Samali, B 1970, 'Modal-based damage identification methods for plate-like structures', Progress in Mechanics of Structures and Materials - Proceedings of the 19th Australasian Conference on the Mechanics of Structures and Materials, ACMSM19, Australasian Conference on the Mechanics of Structures and Materials, Taylor and Francis, Christchurch, New Zealand, pp. 909-914.
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A great deal of work has been done in the area of damage identification in structures using changes of modal parameters before and after damage. Most of the developments have been based on beam theory and application to beam-like or truss structures. Few researchers have contributed to in-depth study of damage identification of plate-like structures employing modal-based methods. In this paper, two modal strain energy based damage identification methods have been expanded for detecting damage and evaluation of damage severity in plate-like structures. The study is based on finite element analysis (FEA) results of a plate model. The purpose of the study is to explore feasibility of using modal strain energy based methods for damage identification of plate-like structures. The results show that one modified method based on a two-dimensional mode shape curvature in computing the damage index provides very good damage localisation and severity estimation. © 2007 Taylor & Francis Group, London.
Li, J, Liu, G & Wong, L 1970, 'Mining statistically important equivalence classes and delta-discriminative emerging patterns', Proceedings of the 13th ACM SIGKDD international conference on Knowledge discovery and data mining, KDD07: The 13th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, ACM, San Jose, CA, pp. 430-+.
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Li, J, Samali, B & Crews, K 1970, 'A cost effective approach for integrity assessment of timber bridges', Progress in Mechanics of Structures and Materials - Proceedings of the 19th Australasian Conference on the Mechanics of Structures and Materials, ACMSM19, Australasian Conference on the Mechanics of Structures and Materials, Taylor and Francis, Christchurch, New Zealand, pp. 1037-1042.
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To develop a reliable and cost effective tool to assess the structural integrity of aged timber bridges is currently a challenge facing structural engineers. Whilst proof-load testing and Non-destructive Evaluation (NDE) techniques provide valuable assessment, such procedures are generally too complex, costly and time consuming to be applied across the entire inventory of timber bridges. A simple dynamic based testing method was developed by authors to lower the cost and shorten the testing time. The method has recently been used successfully to undertake field-testing of more than 180 timber bridges across NSW. This paper summarises the analytical development of this new approach together with some experimental examples. In the analytical studies, a closed form solution was obtained to provide an explicit relationship between the flexural stiffness and measured modal parameters. A beam with spring and masses attached was used to model a bridge with added mass or alternative added mass such as a trailer and/or a water tank for bridge testing. After obtaining the in-service stiffness of the tested bridge, a probabilistic modelling based on bending strength and gross stiffness (EI) of timber girders, is developed to provide an assessment of bridge load carrying capacity by using predicted in-service stiffness. Results of experimental studies and field testing using this approach are given in the references. © 2007 Taylor & Francis Group, London.
Li, K, Zhou, W, Yu, S & Dai, B 1970, 'A Parallel Downloading Algorithm for Redundant Networks', 7th IEEE International Conference on Computer and Information Technology (CIT 2007), 7th IEEE International Conference on Computer and Information Technology (CIT 2007), IEEE, Aizu Wakamatsu, JAPAN, pp. 177-+.
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Li, K, Zhou, W, Yu, S & Li, P 1970, 'Novel Data Management Algorithms in Peer-to-Peer Content Distribution Networks', KNOWLEDGE SCIENCE, ENGINEERING AND MANAGEMENT, 2nd International Conference on Knowledge Science, Engineering Management, Springer Berlin Heidelberg, Melbourne, AUSTRALIA, pp. 538-543.
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Li, K, Zhou, W, Yu, S & Zhang, Y 1970, 'A Resource-Search and Routing Algorithm within PCDN Autonomy Area', Eighth International Conference on Parallel and Distributed Computing, Applications and Technologies (PDCAT 2007), Eighth International Conference on Parallel and Distributed Computing, Applications and Technologies (PDCAT 2007), IEEE, pp. 509-514.
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This paper studied a new type of network model; it is formed by the dynamic autonomy area, the structured source servers and the proxy servers. The new network model satisfies the dynamics within the autonomy area, where each node undertakes different tasks according to their different abilities, to ensure that each node has the load ability fit its own; it does not need to exchange information via the central servers, so it can carry out the efficient data transmission and routing search. According to the highly dynamics of the autonomy area, we established dynamic tree structure-proliferation system routing and resource-search algorithms and simulated these algorithms. Test results show the performance of the proposed network model and the algorithms are very stable. © 2007 IEEE.
Li, K, Zhou, W, Yu, S & Zhang, Y 1970, 'A resource-search and routing algorithm within PCDN autonomy area', EIGHTH INTERNATIONAL CONFERENCE ON PARALLEL AND DISTRIBUTED COMPUTING, APPLICATIONS AND TECHNOLOGIES, PROCEEDINGS, 8th International Conference on Parallel and Distributed Computing, Applications and Technologies, IEEE COMPUTER SOC, Adelaide, AUSTRALIA, pp. 509-+.
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Li, K, Zhou, W, Yu, S & Zhang, Y 1970, 'A Resource-Search and Routing Algorithm within PCDN Autonomy Area', Eighth International Conference on Parallel and Distributed Computing, Applications and Technologies (PDCAT 2007), Eighth International Conference on Parallel and Distributed Computing, Applications and Technologies (PDCAT 2007), IEEE.
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Li, K, Zhou, WL, Yu, S & Dai, B 1970, 'A parallel downloading algorithm for redundant networks', CIT 2007: 7th IEEE International Conference on Computer and Information Technology, pp. 177-182.
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In this paper, we study the downloading mechanism of BitTorrent (or BT), a P2P based popular and convenient parallel downloading software tool, point out some of its limitations, and propose an algorithm to improve its performance. In particular, we address the limitations of BT by using neighbours in P2P networks to resolve the redundant copies problem and to optimise the downloading speed. Our preliminary experiments show that the proposed enhancement algorithm works well. © 2007 IEEE.
Li, L & Petersen, IR 1970, 'A gramian-based approach to model reduction for uncertain systems', PROCEEDINGS OF THE 46TH IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-14, 46th IEEE Conference on Decision and Control, IEEE, New Orleans, LA, pp. 1245-1250.
Li, L & Petersen, IR 1970, 'A rank constrained LMI algorithm for the robust H-infinity control of an uncertain system via a stable output feedback controller', PROCEEDINGS OF THE 46TH IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-14, 46th IEEE Conference on Decision and Control, IEEE, New Orleans, LA, pp. 1239-1244.
Li, L, Petersen, IR & IEEE 1970, 'A rank constrained LMI algorithm for decentralized state feedback guaranteed cost control of uncertain systems with uncertainty described by integral quadratic constraints', 2007 AMERICAN CONTROL CONFERENCE, VOLS 1-13, American Control Conference, IEEE, New York, USA, pp. 257-262.
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The paper presents a numerical algorithm for constructing a decentralized state feedback guaranteed cost controller for an uncertain system. The uncertain systems under consideration contain structured uncertainty described by integral quadratic constraints. The decentralized controller is designed to achieve a closed loop system which is absolutely stable and such that a cost function satisfies a given bound for all admissible uncertainties. The main result gives an algorithm for constructing the desired controller in terms of LMIs subject to rank constraints. © 2007 IEEE.
Li, L, Ugrinovskii, VA & IEEE 1970, 'Robust stabilization of LPV systems with structured uncertainty using minimax controllers', PROCEEDINGS OF THE 46TH IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-14, 46th IEEE Conference on Decision and Control, IEEE, New Orleans, LA, pp. 1088-1093.
Li, S 1970, 'Combining topological and directional information for spatial reasoning', IJCAI International Joint Conference on Artificial Intelligence, International Joint Conference on Artificial Intelligence, AAAI Press, Hyderabad, India, pp. 435-440.
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Current research on qualitative spatial representation and reasoning usually focuses on one single aspect of space. However, in real world applications, several aspects are often involved together. This paper extends the well-known RCC8 constraint language to deal with both topological and directional information, and then investigates the interaction between the two kinds of information. Given a topological (RCC8) constraint network and a directional constraint network, we ask when the joint network is satisfiable. We show that when the topological network is over one of the three maximal tractable subclasses of RCC8, the problem can be reduced into satisfiability problems in the RCC8 algebra and the rectangle algebra (RA). Therefore, reasoning techniques developed for RCC8 and RA can be used to solve the satisfiability problem of a joint network.
Li, Y & Esselle, KP 1970, 'A height-reduced, slot-array-fed EBG resonator antenna with high gain and large bandwidth', 2007 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, VOLS 1-12, IEEE Antennas-and-Propagation-Society International Symposium, IEEE, Honolulu, HI, pp. 4001-4004.
Li, Y, Wang, J & Qian, L 1970, 'A new methodology of modeling a novel large-scale magnetorheological impact damper', Nonlinear Science and Complexity, Conference on Nonlinear Science and Complexity, WORLD SCIENTIFIC PUBL CO PTE LTD, Beijing, PEOPLES R CHINA, pp. 382-387.
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Li, Y, Wang, J & Qian, L 1970, 'Nonlinear characteristics of magnetorheological damper under base excitation', Nonlinear Science and Complexity, Conference on Nonlinear Science and Complexity, WORLD SCIENTIFIC PUBL CO PTE LTD, Beijing, PEOPLES R CHINA, pp. 388-393.
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Lin, C-T, Chuang, S-W, Chen, Y-C, Ko, L-W, Liang, S-F & Jung, T-P 1970, 'EEG Effects of Motion Sickness Induced in a Dynamic Virtual Reality Environment', 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, IEEE, pp. 3872-3875.
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The Electroencephalogram (EEG) dynamics which relate to motion sickness are studied in this paper. Instead of providing visual or motion stimuli to the subjects to induce motion sickness, we employed a dynamic virtual-reality (VR) environment in our research. The environment consisted of a 3D surrounding VR scene and a motion platform providing a realistic situation. This environment provided the advantages of safety, low cost, and the realistic stimuli to induce motion sickness. The Motion Sickness Questionnaire (MSQ) was used to assess the sickness level, and the EEG effects on the subjects with high sickness levels were investigated using the independent component analysis (ICA). The fake-epoch extraction was then applied to the nausea-related independent components. Finally we employed the Event-Related Spectral Perturbation (ERSP) technology on the fake-epochs in order to determine the EEG dynamics during motion sickness. The experimental results show that most subjects experienced an 8-10 Hz power increase to their motion sickness-related phenomena in the parietal and motor areas. Moreover, some subjects experienced an EEG power increase of 18-20 Hz in their synchronized responses recorded in the same areas. The motion sickness-related effects and regions can be successfully obtained from our experimental results. ©2007 IEEE.
Lin, X, Yuan, Y, Zhang, Q & Zhang, Y 1970, 'Selecting Stars: The k Most Representative Skyline Operator', 2007 IEEE 23rd International Conference on Data Engineering, 2007 IEEE 23rd International Conference on Data Engineering, IEEE, pp. 86-95.
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Skyline computation has many applications including multi-criteria decision making. In this paper, we study the problem of selecting k skyline points so that the number of points, which are dominated by at least one of these k skyline points, is maximized. We first present an efficient dynamic programming based exact algorithm in a 2d-space. Then, we show that the problem is NP-hard when the dimensionality is 3 or more and it can be approximately solved by a polynomial time algorithm with the guaranteed approximation ratio 1 - 1/e. To speed-up the computation, an efficient, scalable, index-based randomized algorithm is developed by applying the FM probabilistic counting technique. A comprehensive performance evaluation demonstrates that our randomized technique is very efficient, highly accurate, and scalable. © 2007 IEEE.
Lindsay, E, Liu, D, Murray, SJ & Lowe, DB 1970, 'Remote Laboratories in Engineering Education: Trends in Students' Perceptions', Proceedings of the 18th Conference of the Australasian Association of Engineering Education, Annual Conference of Australasian Association for Engineering Education, Australasian Association for Engineering Education, University of Melbourne, Australia, pp. 1-6.
Ling, SH, Iu, HHC, Chan, KY, Ki, SK & IEEE 1970, 'Economic load dispatch: A new hybrid particle swarm optimization approach', 2007 AUSTRALASIAN UNIVERSITIES POWER ENGINEERING, VOLS 1-2, Australasian Universities Power Engineering Conference (AUPEC), IEEE, Curtin Univ Technol, Perth, AUSTRALIA, pp. 225-231.
Ling, SH, Yeung, CW, Chan, KY, Iu, HHC, Leung, FHF & IEEE 1970, 'A new hybrid particle swarm optimization with wavelet theory based mutation operation', 2007 IEEE CONGRESS ON EVOLUTIONARY COMPUTATION, VOLS 1-10, PROCEEDINGS, IEEE Congress on Evolutionary Computation, IEEE, Singapore, SINGAPORE, pp. 1977-1984.
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Lister, R, Berglund, A, Box, I, Cope, C, Pears, A, Avram, C, Bower, M, Carbone, A, Davey, B, de Raadt, M, Doyle, B, Fitzgerald, S, Mannila, L, Kutay, C, Peltomäki, M, Sheard, J, Simon, Sutton, K, Traynor, D, Tutty, J & Venables, A 1970, 'Differing ways that computing academics understand teaching', Conferences in Research and Practice in Information Technology Series, Australasian Conference on Computer Science Education, Australian Computer Society, Ballarat, Australia, pp. 97-106.
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This paper presents first results from a wide-ranging phenomenographic study of computing academics' understanding of teaching. These first results focus upon four areas: the role of lab practical sessions, the experience of teaching success, conceptions of motivating and engaging students, and the granularity of the teacher's focus. The findings are comparable with prior work on the understandings of academics in other disciplines. This study was started as part of a workshop on phenomenography. Most participants at the workshop received their first training in phenomenography. This paper summarises the structure of the workshop. © 2007, Australian Computer Society, Inc.
Lister, RF 1970, 'The Neglected Middle Novice Programmer: Reading and Writing without Abstracting', 20th Annual Conference of the National Advisory Committee on Computing Qualifications, National Advisory Committee on Computing Qualifications, National Advisory Committee on Computing Qualifications, Nelson, New Zealand, pp. 133-140.
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Many teachers of novice programmers have lamented that students either seem to have a natural gift for programming, or have no gift for it at all. In this paper, we discuss a third group of students, the middle novice programmer. At the completion of their first semester of programming, these students can manifest a strong concrete grasp of the semantics of basic programming language constructs, by hand executing code, but they cannot reason about code at a higher goal/plan level. The research evidence presented in this paper for the existence of these middle novice programmers is from the analysis of twelve multiple choice questions, which students attempted as part of an end-of-first-semester exam.
Litchfield, A, Dyson, LE, Lawrence, E & Zmijewska, A 1970, 'Directions for m-learning research to enhance active learning', ASCILITE 2007 - The Australasian Society for Computers in Learning in Tertiary Education, Annual Conference of the Australasian Society for Computers in Learning in Tertiary Education, Centre for Educational Development, Nanyang Technological University, Nanyang Technological University, Singapore, pp. 587-596.
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This paper aims to inform readers of suggested directions for researching how mobile technology can enhance active student learning. These directions are informed by an online survey of our students in early 2007 and a contemporary literature search. We present the findings of our search of global best-practice in m-learning, gaps in the current literature are identified and five directions are suggested for 2007 m-learning research and development. We start discussing how to investigate these suggested directions. Our five suggested action research directions are all significant issues in m-learning and all need to be better investigated. If we are interested in enhancing student learning, a priority is to design mlearning and teaching strategies that involve active experiential learning. These strategies need to effectively support our learners' development of attitudes, understandings and skills in identified graduate attributes, curriculum objectives and stated learning outcomes. The development of wide support for an online body of knowledge of m-learning and teaching principles, strategies and effective, practical case-studies across all disciplines - an m-portal - is needed and can support and inform emerging national and international approaches to using mobile technologies to enhance learning. Guided by our findings and suggested research suggestions the authors hope to discuss, extend and develop collaborative partnerships for future action research, development and sponsorship at our ascilite 2007 conference workshop. © 2007 Andrew Litchfield, Laurel Evelyn Dyson, Elaine Lawrence and Agnieszka Zmijewska.
Liu, B, Hao, Z-F, Lu, J & Liu, S-Q 1970, 'Apply Support Vector Machine for CRM Problem', 2007 International Conference on Machine Learning and Cybernetics, 2007 International Conference on Machine Learning and Cybernetics, IEEE, Hong Kong, PEOPLES R CHINA, pp. 3288-+.
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Liu, G, Li, J, Sim, K & Wong, L 1970, 'Distance Based Subspace Clustering with Flexible Dimension Partitioning', 2007 IEEE 23rd International Conference on Data Engineering, 2007 IEEE 23rd International Conference on Data Engineering, IEEE, pp. 1250-1254.
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Traditional similarity or distance measurements usually become meaningless when the dimensions of the datasets increase, which has detrimental effects on clustering performance. In this paper, we propose a distance-based subspace clustering model, called nCiuster, to find groups of objects that have similar values on subsets of dimensions. Instead of using a grid based approach to partition the data space into non-overlapping rectangle cells as in the density based subspace clustering algorithms, the nCiuster model uses a more flexible method to partition the dimensions to preserve meaningful and significant clusters. We develop an efficient algorithm to mine only maximal nClusters. A set of experiments are conducted to show the efficiency of the proposed algorithm and the effectiveness of the new model in preserving significant clusters. © 2007 IEEE.
Lopez-Mariscal, C, Gutiérrez-Vega, JC, McGloin, D & Dholakia, K 1970, 'Laserless Optical Trapping', Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion, Frontiers in Optics, OSA.
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López-Mariscal, C, Gutiérrez-Vega, JC, McGloin, D & Dholakia, K 1970, 'Laserless optical trapping', Optics InfoBase Conference Papers.
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We report the use of light from a thermal source for optical trapping and guiding of dielectric microscopic particles. The light source is filtered for increased spatial coherence and subsequently shaped into a white light Bessel beam for reduced spot size and increased optical gradient. © 2006 Optical Society of America.
Lowe, D & Huang, X 1970, 'Adaptive Time-Frequency Codes for Ultra-Wideband', 2007 Third International Conference on Wireless and Mobile Communications (ICWMC'07), 2007 Third International Conference on Wireless and Mobile Communications (ICWMC'07), IEEE, pp. 38-44.
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This paper investigates inter-piconet interference (IPI) in the multi-band orthogonal frequency division multiplexing (MB-OFDM) ultra-wideband (UWB) standard. IPI is caused when the time-frequency codes (TFCs) that delineate MB-OFDM piconets collide. An upper-bound on the severity of the IPI problem is obtained through a theoretical analysis of data-rate-specific punctured convolutional codes. Using these results, several methods for adaptive TFCs are proposed and analyzed. Comprehensive simulation results show how packet error rates (PERs) for simultaneous operating piconets (SOPs) can be improved by up to 2 dB by enabling adaptive TFCs at the transmitter. Several combinations of data rate, TFC, channel model and interferer power are studied. © 2007 IEEE.
Lowe, D & Huang, X 1970, 'Complementary Channel Estimation and Synchronization for OFDM', The 2nd International Conference on Wireless Broadband and Ultra Wideband Communications (AusWireless 2007), The 2nd International Conference on Wireless Broadband and Ultra Wideband Communications (AusWireless 2007), IEEE, pp. 23-28.
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In this paper, we present a new type of packet preamble for orthogonal frequency division multiplexing (OFDM) systems that is based on a complementary sequence pair. It is shown how this approach permits a receiver to dynamically choose between frequency-domain equalization (FDE) and time-domain equalization (TDE). With FDE offering a low-complexity zero-forcing (ZF) equalization and TDE facilitating easy minimum mean square error (MMSE) estimation, it is concluded that a spectrally-flattened complementary sequence pair offers an outstanding combination of flexibility and performance. © 2007 IEEE.
Lowe, D & Huang, X 1970, 'Hybrid Automatic Repeat Requests for MB-OFDM Ultra-Wideband', 2007 Third International Conference on Wireless and Mobile Communications (ICWMC'07), 2007 Third International Conference on Wireless and Mobile Communications (ICWMC'07), IEEE.
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This paper analyzes the design and performance of hybrid automatic repeat request (HARQ) extensions to the multi- n band orthogonal frequency division multiplexing (MB-OFDM) ultra-wideband (UWB) standard. It is shown how both Type-I and Type-III HARQ can significantly reduce the packet error rate (PER) in realistic frequency-selective channels. An exhaustive search is used to find an optimal low-complexity Type-III HARQ scheme by deriving the distance spectra and bit error upper-bound for all sets of complementary puncturing matrices. The consequences of selecting sub-optimal puncturing matrices are also quantified. © 2007 IEEE.
Lowe, D & Huang, X 1970, 'Optimal Adaptive Hyperbolic Companding for OFDM', The 2nd International Conference on Wireless Broadband and Ultra Wideband Communications (AusWireless 2007), The 2nd International Conference on Wireless Broadband and Ultra Wideband Communications (AusWireless 2007), IEEE.
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In this paper, we derive and analyze a companding algorithm based on the hyperbolic tangent and inverse hyperbolic tangent functions for use in orthogonal frequency division multiplexing (OFDM) transceivers. Probability density functions (PDFs) that approximate the transmitted and received OFDM signals in the presence of additive white Gaussian noise (AWGN) are derived and used to analyze the degree of companding relative to the signal-to-noise ratio (SNR) and clipping level. A set of optimal companding linearity coefficients for the multiband OFDM (MB-OFDM) ultra-wideband (UWB) standard are presented. © 2007 IEEE.
Lu, DD-C 1970, 'Synthesis of Single Phase DC/AC Inverters', 2007 2nd IEEE Conference on Industrial Electronics and Applications, 2007 2nd IEEE Conference on Industrial Electronics and Applications, IEEE, Harbin, PEOPLES R CHINA, pp. 1922-1926.
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Lu, DD-C & Molavi, B 1970, 'Hysteresis Control of Single-Stage Power-Factor-Corrected Converters', 2007 2nd IEEE Conference on Industrial Electronics and Applications, 2007 2nd IEEE Conference on Industrial Electronics and Applications, IEEE, Harbin, PEOPLES R CHINA, pp. 943-+.
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Lu, DDC, Chu, RH, Sathiakumar, S & Agelidis, VG 1970, 'A buck converter with simple maximum power point tracking for power electronics education on solar energy systems', 2007 Australasian Universities Power Engineering Conference, 2007 Australasian Universities Power Engineering Conference (AUPEC), IEEE.
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This paper introduces a solar photovoltaic (PV) system suitable for undergraduate engineering education and training. The system consists of a buck converter using a simple maximum power point tracking (MPPT) method. Constant voltage control method is used for the approximate tracking and is implemented by analogue circuits. The circuit simplicity helps students to appreciate the benefit of MPPT in a short period of time without the need to work on complicated circuits and software coding. The proposed converter has been successfully implemented and served as a mini-project in a unit of study in power engineering studies.
Lu, DD-C, Iu, HH-C & Pjevalica, V 1970, 'A Single-Stage AC/DC Converter with High Power Factor, Regulated Bus Voltage and Output Voltage', IECON 2007 - 33rd Annual Conference of the IEEE Industrial Electronics Society, IECON 2007. 33rd Annual Conference of the IEEE Industrial Electronics, IEEE, Taipei, TAIWAN, pp. 1455-+.
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Lu, H, Zhu, J, Guo, Y & Lin, Z 1970, 'A miniature short stroke tubular linear actuator and its control', 2007 INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS, VOLS 1-4, International Conference on Electrical Machines and Systems, IEEE, Seoul, SOUTH KOREA, pp. 1879-+.
Luo, D, Cao, L, Ni, J & Liu, L 1970, 'Building Agent Service Oriented Multi-Agent Systems', Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), International KES Symposium on Agents and Multiagent systems - Technologies and Applications, Springer Berlin Heidelberg, Wroclaw, Poland, pp. 11-20.
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An effective agent-based design approach is significant in engineering agent-based systems. Existing design approaches meet with challenges in designing Internet-based open agent systems. The emergence of service-oriented computing (SOC) brings in intrinsic mechanisms for complementing agent-based computing (ABS). In this paper, we investigate the dialogue between agent and service, and between ABS and SOC. As a consequence, we synthesize them and develop a design approach called agent service-oriented design (ASOD). The ASOD consists of agent service-based architectural design and detailed design. ASOD expands the content and range of agent and ABS, and synthesizes the qualities of SOC such as interoperability and openness, and the performances of ABC like flexibility and autonomy. The above techniques have been deployed in developing an online trading and mining support infrastructure F-Trade. © Springer-Verlag Berlin Heidelberg 2007.
Luo, L, Zhang, J & Shi, Z 1970, 'Novel Block-Interleaved Multi-code CDMA System for UWB Communications', 2007 IEEE International Conference on Ultra-Wideband, 2007 IEEE International Conference on Ultra-Wideband, IEEE, IEEE, pp. 648-652.
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Luo, Q & Tong, L 1970, 'Nonlinear analysis of bonded composite patch repairs', ICCM International Conferences on Composite Materials.
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This paper presents a geometrical nonlinear analysis for the single strap model of single-sided adhesively bonded composite patch repairs to cracked structures subjected to tension. In this analysis, the equilibrium equations are derived by considering the large deflections of the substrates along their entire lengths. By neglecting the higher order items, analytical solutions for the single-strap patch repair model are obtained, and the solutions are then simplified for engineering applications. The geometrically-nonlinear finite element analysis was conducted using MSC/NASTRAN to validate the present closed-form solutions. The numerical results indicate that the present closed-form solutions and their simplifications correlate very well with the nonlinear finite element computations.
Ma, J, Lu, J & Zhang, G 1970, 'A Rule-Map based Technique for Information Inconsistency Verification', 2007 Information, Decision and Control, 2007 Information, Decision and Control, IEEE, Adelaide, Australia, pp. 296-301.
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This paper focuses on the problem of verifying information inconsistencies in acquired information. A rule-map based technique for data inconsistency is presented, where rule-map is used to describe hierarchical structure of rules and estimate judgment standard for consistency dynamically. Moreover, a state-based knowledge representation technique for logical inconsistency is investigated, in which knowledge is illustrated as states set of related objects and logical inconsistency is determined by the relationships between those state-sets. To illustrate the presented techniques, two examples are given. © 2007 IEEE.
Ma, J, Lu, J, Zhang, G & IEEE 1970, 'A two-level information filtering model in generating warning information', 2007 IEEE Symposium on Computational Intelligence in Multi-Criteria Decision Making, IEEE Symposium on Computational Intelligence in Multi-Criteria Decision-Making, IEEE, Hawaii, USA, pp. 354-359.
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Information filtering is an important component in warning systems. This paper proposes a two-level information filtering model for generating warning information. In this model, information is represented by n-tuple, whose elements are values of information features. The features of information are divided into critical and uncritical features. Within this model, the collected information is filtered in two stages by users at different levels. At the first stage, exceptions are separated from normal information. And at the second stage, critical exceptions are separated from uncritical information. To illustration the proposed model, an example is discussed. ©2007 IEEE.
Macaš, M, Gabrys, B, Ruta, D & Lhotská, L 1970, 'Particle Swarm Optimisation of Multiple Classifier Systems', COMPUTATIONAL AND AMBIENT INTELLIGENCE, 9th International Work-Conference on Artificial Neural Networks, Springer Berlin Heidelberg, San Sebastian, SPAIN, pp. 333-340.
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Madden, C & Piccardi, M 1970, 'A framework for track matching across disjoint cameras using robust shape and appearance features', 2007 IEEE Conference on Advanced Video and Signal Based Surveillance, 2007 IEEE Conference on Advanced Video and Signal Based Surveillance, IEEE, London, UK, pp. 188-193.
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This paper presents a framework based on robust shape and appearance features for matching the various tracks generated by a single individual moving within a surveillance system. Each track is first automatically analysed in order to detect and remove the frames affected by large segmentation errors and drastic changes in illumination. The object's features computed over the remaining frames prove more robust and capable of supporting correct matching of tracks even in the case of significantly disjointed camera views. The shape and appearance features used include a height estimate as well as illumination-tolerant colour representation of the individual's global colours and the colours of the upper and lower portions of clothing. The results of a test from a real surveillance system show that the combination of these four features can provide a probability of matching as high as 91 percent with 5 percent probability of false alarms under views which have significantly differing illumination levels and suffer from significant segmentation errors in as many as 1 in 4 frames. © 2007 IEEE.
Madden, C & Piccardi, M 1970, 'Detecting Major Segmentation Errors for a Tracked Person Using Colour Feature Analysis', 14th International Conference on Image Analysis and Processing (ICIAP 2007), 14th International Conference on Image Analysis and Processing (ICIAP 2007), IEEE, Modena, ITALY, pp. 524-+.
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Madden, C, Piccardi, M & Zuffi, S 1970, 'Comparison of Techniques for Mitigating the Effects of Illumination Variations on the Appearance of Human Targets', Lecture Notes in Computer Science vol.4842,Advances in Visual Computing, International Symposium on Visual Computing, Springer Berlin Heidelberg, Lake Tahoe, USA, pp. 116-127.
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Several techniques have been proposed to date to build colour invariants between camera views with varying illumination conditions. In this paper, we propose to improve colour invariance by using data-dependent techniques. To this aim, we compare the effectiveness of histogram stretching, illumination filtration, full histogram equalisation and controlled histogram equalisation in a video surveillance domain. All such techniques have limited computational requirements and are therefore suitable for real time implementation. Controlled histogram equalisation is a modified histogram equalisation operating under the influence of a control parameter [1]. Our empirical comparison looks at the ability of these techniques to make the global colour appearance of single human targets more matchable under illumination changes, whilst still discriminating between different people. Tests are conducted on the appearance of individuals from two camera views with greatly differing illumination conditions and invariance is evaluated through a similarity measure based upon colour histograms. In general, our results indicate that these techniques improve colour invariance; amongst them, full and controlled equalisation consistently showed the best performance.
Madden, CS & Piccardi, M 1970, 'Detecting Major Segmentation Errors for a Tracked Person Using Colour Feature Analysis', Proceedings of 14th International Conference on Image Analysis and Processing 2007, International Conference on Image Analysis and Processing, IEEE Computer Society, Modena, Italy, pp. 524-529.
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This paper presents a method to identify frames with significant segmentation errors in an individuals track by analysing the changes in appearance and size features along the frame sequence. The features used and compared include global colour histograms, local histograms and the bounding box size. Experiments were carried out on 26 tracks from 4 different people across two cameras with differing illumination conditions. By fusing two local colour features with a global colour feature, probabilities of segmentation error detection as high as 83 percent of human expert-identified major segmentation errors are achieved with false alarm rates of only 3 percent. This indicates that the analysis of such features along a track can be useful in the automatic detection of significant segmentation errors. This can improve the final results of many applications that wish to use robust segmentation results from a tracked person.
Madhisetty, S 1970, 'Utility Computing and Its Applications', Managing Worldwide Operations & Communications with Information Technology, 2007 Information Resources Management Association, Vancouver, Canada, pp. 1037-1038.
Mahadevan, V, Chaczko, ZC & Agbinya, JI 1970, 'A Comprehensive Analytical Model for Video over IP in Telecollaboration Business System Environments', Proceedings of the 8th International Conference on Intelligent Technologies (InTech-07), International Conference on Intelligent Technologies, University of Technology Sydney, Australia, University of Technology Sydney, Australia, pp. 212-218.
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This paper proposes the emerging Telecollaboration (TC) business system environments supported by Video over IP applications, thus contributing the measurement of user experience. Initially, a simple but comprehensive analytical model for Video over IP is presented for the development of Quality of Service (QoS) indices. We then characterize the model with few illustrative units that provide an integrated context for estimation and mapping of the quality and quantity measures of Video over IP in the ubiquitous Internet. This includes application of Pittsâs software methodology, whilst addressing the second-order network performance statistics in the context of jitter (such as delay and packet-loss variation). Finally at the network level, the behavior of source, queuing, multi-service requirement mechanisms and a set of flows, connections and aggregates are measured to justify the quality inherent usability aspects of video quality. It is expected that the proposed modeling overcomes the degradation of video quality, which is seen as a fundamental problem that often occurs due to the multi-user packet switched network. Our results also suggest that the experimentally validated analytical modeling of Video over IP is of considerable value in promoting the TC initiatives.
Mansor, S, Pradhan, B, Daud, M, Jamaludin, N & Khuzaimah, Z 1970, 'Landslide susceptibility analysis using an artificial neural network model', SPIE Proceedings, Remote Sensing, SPIE, Florence, ITALY.
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Mansor, S, Pradhan, B, Daud, M, Jamaludin, N & Khuzaimah, Z 1970, 'Landslide susceptibility analysis using an artificial neural network model', Remote Sensing, International Society for Optics and Photonics, pp. 67490J-67490J.
Mansor, S, Pradhan, B, Daud, M, Jamaludin, N & Khuzaimah, Z 1970, 'Landslide susceptibility analysis using an artificial neural network model [6749-18]', PROCEEDINGS-SPIE THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING, International Society for Optical Engineering; 1999, p. 6749.
Marjanovic, O 1970, 'The Next Stage of Operational Business Intelligence: Creating New Challenges for Business Process Management.', HICSS, IEEE Computer Society, pp. 215-215.
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Current practices in the area of Business Intelligence (BI) and Business Performance Management (BPerM) confirm the need for better integration of BI and Business Processes (BPs). This is especially the case with operational BI that aims to unify strategic and tactical decision making, by integrating BI solutions with organisation's constantly evolving BPs. However, operational BI has a very limited view of BP and Business Process Management (BProM) systems. In essence, it focuses on a limited number of core, transactional BPs that are, by definition, highly structured and repetitive. This paper argues that in order to support customer-facing employees in service-oriented industries, it is necessary to consider knowledge intensive BPs and their possible integration with operational BI. This paper offers a critical analysis of case-handling BPs in the context of operational BI. It then identifies a number of research challenges related to a new type of case-handling BProM system. © 2007 IEEE.
Marjanovic, O, Skaf-Molli, H, Molli, P & Godart, C 1970, 'Collaborative practice-oriented business processes Creating a new case for business process management and CSCW synergy.', CollaborateCom, IEEE Computer Society / ICST, pp. 448-455.
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In very recent times, organisations have started to shift their focus from highly standardised operational business processes (BPs) to other types of processes that cannot be easily replicated due to the knowledge, skills and creativity of people involved. Consequently the field of Business Process Management (BPM) has gradually evolved to include four different, but equally important components: strategy, people, processes and technology. The renewed interest in process-related knowledge and collaboration has opened a new case for possible synergy of BPM and CSCW (Computer Supported Cooperative Work) fields. The paper argues that the key to this synergy is in the field of Knowledge Management. The paper introduces the knowledge dimension of BPs and uses it to determine how collaborative processes, in particular practice-oriented creative BPs, differ from other types of organizational processes. The paper argues that in the case of these BPs, process support needs to co-evolve with process execution itself, and therefore could be also considered as an ever evolving, "organic" system, creating a new set of interesting research and practical challenges in the future.
Maxwell, C, O'Neill, T & Leaney, J 1970, 'Formal Architecture Transformation Using Heuristics', 14th Annual IEEE International Conference and Workshops on the Engineering of Computer-Based Systems (ECBS'07), 14th Annual IEEE International Conference and Workshops on the Engineering of Computer-Based Systems (ECBS'07), IEEE, Tucson, Arizona, pp. 15-24.
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Heuristics have long been a popular and effective mechanism for capturing the knowledge of experts. In recent times, however, the more common use of heuristics has been as a means for communicating ideas at an abstract level, with little consideration to their potential as a structured approach to design improvement. With this paper we present the issues surrounding, and a structured method for, formally capturing architectural change embodied within heuristics. We demonstrate how through the application of graph theory, category theory and predicate calculus we can capture change within a heuristic and then use it to achieve formal heuristic-based transformation of a real-world system. By capturing heuristics in the structured and formal manner discussed in this paper we present ourselves with the opportunity to create a practical and reliable heuristic-based architecture transformation system. This is done within the wider context of achieving a process for optimising the non-functional qualities of a system architecture through design transformation.
McGloin, D, Buchanan, J, Burnham, DR, Lorenz, RM, Edgar, JS, Jeffries, GDM, Zhao, Y & Chiu, DT 1970, 'Controlled fusion of femtoliter-volume aqueous droplets using holographic optical tweezers', 2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference, 2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference, IEEE.
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McGloin, D, Buchanan, J, Burnham, DR, Lorenz, RM, Scott Edgar, J, Jeffries, GDM, Zhao, Y & Chiu, DT 1970, 'Controlled fusion of femtoliter-volume aqueous droplets using holographic optical tweezers', Optics InfoBase Conference Papers.
McGloin, D, Burnham, DR, Summers, MD, Rudd, DR, Shahvisi, A & Dewar, N 1970, 'Studies of droplet manipulation in optical traps', SPIE Proceedings, NanoScience + Engineering, SPIE, San Diego, CA.
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McGregor, C & Frize, M 1970, 'Women in Biomedical Engineering and Health Informatics', 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, IEEE, Lyon, FRANCE, pp. 238-238.
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McGregor, C & Kneale, B 1970, 'Simulated neonatal intensive care units to support neonatologist international mobility', Proceedings of the 3rd IASTED International Conference on Telehealth, pp. 124-129.
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Intensive care units (ICUs) worldwide offer support for patients in need of critical care. They boast a range of state-of-the-art medical monitoring devices to monitor a patient's physiological parameters such as blood oxygen, blood pressure, and heart rate. Other devices such as ventilators offer mechanical life support. While much of the existing research enabling ICT support for ICUs has focussed on the delivery of alerts, these approaches do not support mobility well. The Bush Babies on Broadband project aims to support NICU patient and care provider mobility. A key benefit of the Bush Babies on Broadband framework is that it is available to link regional hospitals with the supporting NICU Neonatologist 'on demand' eliminating the need to establish permanent point to point connections. The focus of this paper is on the reapplication of the Bush Babies on Broadband architecture to support mobility of the care provider. The ability of a Neonatologist to access multi-media information for babies contained within their neonatal intensive care unit, while located overseas is tested and results are presented.
McGregor, C & Stacey, M 1970, 'High frequency distributed data stream event correlation to improve neonatal clinical management', Proceedings of the 2007 inaugural international conference on Distributed event-based systems, DEBS07: Distributed Event-based Systems Conference, ACM, pp. 146-151.
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Approximately eighteen percent (18%) of babies born in New South Wales (NSW), Australia require special care or neonatal intensive care admission. Premature babies can be up to 17 weeks early and may only weigh 450gms; they can spend 3 or 4 months in intensive care and have dozens of specific diseases before discharge, many of these may have long term implications for the future health of the individual. In addition, fifteen percent of neonatal intensive care admissions are transferred after delivery from smaller regional or remote hospitals without intensive care facilities to larger Tertiary Referral or Children's Hospitals with Neonatal Intensive Care Units (NICUs). Similar conditions apply within Australia, New Zealand, Canada, USA and elsewhere where small non-tertiary units are spread throughout the country. This paper presents case study based applied research in progress supporting the development of a distributed event stream processing framework to enable high frequency distributed data stream event correlation to improve neonatal clinical management. This research extends the traditional notion of event-based approaches by extending the notion of an event to incorporate a composite event that exists over a period of time, as is required within the domain of health and medicine. This is achieved through a multi-agent event calculus based approach that supports temporal abstraction. A key contribution of this research is the ability to support automated medical condition onset detection. © 2007 ACM.
Mealy, E, Carrington, D, Strooper, P & Wyeth, P 1970, 'Improving Usability of Software Refactoring Tools', 2007 Australian Software Engineering Conference (ASWEC'07), 2007 18th Australian Software Engineering Conference, IEEE.
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Meier, C, Nguyen, TV, Handelsman, DJ, Schindler, C, Kushnir, MM, Rockwood, AL, Meikle, WA, Center, JR, Eisman, JA & Seibel, MJ 1970, 'Endogenous sex hormones and incident fracture risk in older men: The Dubbo Osteoporosis Epidemiology Study', JOURNAL OF BONE AND MINERAL RESEARCH, 29th Annual Meeting of the American-Society-for-Bone-and-Mineral-Research, AMER SOC BONE & MINERAL RES, Honolulu, HI, pp. S87-S87.
Meier, C, Nguyen, TV, Handelsman, DJ, Schindler, C, Kushnir, MM, Rockwood, AL, Meikle, WA, Center, JR, Eisman, JA & Seibel, MJ 1970, 'Endogenous sex hormones and incident fracture risk in older men: The dubbo osteoporosis epidemiology study', JOURNAL OF BONE AND MINERAL RESEARCH, 29th Annual Meeting of the American-Society-for-Bone-and-Mineral-Research, AMER SOC BONE & MINERAL RES, Honolulu, HI, pp. S119-S119.
Merigó, JM & Gil-Lafuente, AM 1970, 'The induced generalized OWA operator', New Dimensions in Fuzzy Logic and Related Technologies - Proceedings of the 5th EUSFLAT 2005 Conference, 5th Conference of the European-Society-for-Fuzzy-Logic-and-Technology, UNIV OSTRAVA, Ostrava, CZECH REPUBLIC, pp. 463-470.
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We study different types of aggregation operators. We focus on the generalized OWA (GOWA) operator developed by Yager which represents a generalization to a wide range of aggregation operators. We distinguish between aggregations with a descending or with an ascending order. We introduce the induced generalized OWA (IGOWA) operator which represents an extension to the GOWA operator. It generalizes a wider range of aggregation operators as the GOWA operator is a particular case of this type of generalization. We study its main properties and some particular cases obtained with it. Finally, we develop a further generalization to the IGOWA operator by using quasi-arithmetic means.
MERZ, S, OBERST, S, DYLEJKO, PG, KESSISSOGLOU, NJ, TSO, YK & MARBURG, S 1970, 'DEVELOPMENT OF COUPLED FE/BE MODELS TO INVESTIGATE THE STRUCTURAL AND ACOUSTIC RESPONSES OF A SUBMERGED VESSEL', Journal of Computational Acoustics, 7th International Conference on Theoretical and Computational Acoustics, World Scientific Pub Co Pte Lt, Hangzhou, PEOPLES R CHINA, pp. 23-47.
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An analytical model and a fully coupled finite element/boundary element model are developed for a simplified physical model of a submarine. The submerged body is modeled as a ring-stiffened cylindrical shell with finite rigid end closures, separated by bulkheads into a number of compartments and under axial excitation from the propeller-shafting system. Lumped masses are located at each end to maintain a condition of neutral buoyancy. Excitation of the hull axial modes from the propeller-shafting system causes both axial motion of the end closures and radial motion of the shell, resulting in a high level of radiated noise. In the low frequency range, only the axial modes in breathing motion are examined, which gives rise to an axisymmetric case, since these modes are efficient radiators. An expression for the structurally radiated sound pressure contributed by axial movement of the end plates and radial motion of the shell was obtained using the Helmholtz integral equation. In the computational model, the effects of the various influencing factors (ring stiffeners, bulkheads, realistic end closures, and fluid loading) on the free vibrational characteristics of the thin walled cylinder are examined. For both the analytical and computational models, the frequency responses, axial and radial responses of the cylinder, and the radiated sound pressure are compared.
Milne, D 1970, 'Computing semantic relatedness using Wikipedia Link structure', Proceedings of NZCSRSC 2007, the 5th New Zealand Computer Science Research Student Conference.
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This paper describes a new technique for obtaining measures of semantic relatedness. Like other recent approaches, it uses Wikipedia to provide a vast amount of structured world knowledge about the terms of interest. Our system, the Wikipedia Link Vector Model or WLVM, is unique in that it does so using only the hyperlink structure of Wikipedia rather than its full textual content. To evaluate the algorithm we use a large, widely used test set of manually defined measures of semantic relatedness as our bench-mark. This allows direct comparison of our system with other similar techniques.
Milne, DN 1970, 'Exploiting web 2.0 forallknowledge-based information retrieval', Proceedings of the ACM first Ph.D. workshop in CIKM, CIKM07: Conference on Information and Knowledge Management, ACM, pp. 69-76.
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This paper describes ongoing research into obtaining and using knowledge bases to assist information retrieval. These structures are prohibitively expensive to obtain manually, yet automatic approaches have been researched for decades with limited success. This research investigates a potential shortcut: a way to provide knowledge bases automatically, without expecting computers to replace expert human indexers. Instead we aim to replace the professionals with thousands or even millions of amateurs: with the growing community of contributors who form the core of Web 2.0. Specifically we focus on Wikipedia, which represents a rich tapestry of topics and semantics and a huge investment of human effort and judgment. We show how this can be directly exploited to provide manually-defined yet inexpensive knowledge-bases that are specifically tailored to expose the topics, terminology and semantics of individual document collections. We are also concerned with how best to make these structures available to users, and aim to produce a complete knowledge-based retrieval system-both the knowledge base and the tools to apply it-that can be evaluated by how well it assists real users in performing realistic and practical information retrieval tasks. To this end we have developed Koru, a new search engine that offers concrete evidence of the effectiveness of our Web 2.0 based techniques for assisting information retrieval. © 2007 ACM.
Milne, DN, Witten, IH & Nichols, DM 1970, 'A knowledge-based search engine powered by wikipedia', Proceedings of the sixteenth ACM conference on Conference on information and knowledge management, CIKM07: Conference on Information and Knowledge Management, ACM, pp. 445-454.
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This paper describes Koru, a new search interface that offers effective domain-independent knowledge-based information retrieval. Koru exhibits an understanding of the topics of both queries and documents. This allows it to (a) expand queries automatically and (b) help guide the user as they evolve their queries interactively. Its understanding is mined from the vast investment of manual effort and judgment that is Wikipedia. We show how this open, constantly evolving encyclopedia can yield inexpensive knowledge structures that are specifically tailored to expose the topics, terminology and semantics of individual document collections. We conducted a detailed user study with 12 participants and 10 topics from the 2005 TREC HARD track, and found that Koru and its underlying knowledge base offers significant advantages over traditional keyword search. It was capable of lending assistance to almost every query issued to it; making their entry more efficient, improving the relevance of the documents they return, and narrowing the gap between expert and novice seekers. Copyright 2007 ACM.
Montillet, J-P, Yu, K & Oppermann, I 1970, 'Location Performance Enhancement with Recursive Processing of Time-of-Arrival Measurements', 2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications, 2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications, IEEE.
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This work deals with the development of pre-filtering techniques for low-cost devices using high data rate communications. Many positioning algorithms have been recently revisited in a centralized architecture scenario, where a cheap Mobile Sensor is surrounded by N Base Stations. The overview of the system is composed of two blocks: a Smoothing Filters and a Positioning Block. In the Smoothing Filters block, different algorithms such as smoothing filter, Recursive Least Squares and Maximum-Likelihood are developed to process multiple Time-of-Arrival measurements before triangulating the position of the Mobile Sensor. The positioning algorithms are the Taylor Series, Direct Method and Spherical Interpolation. All in all, it is shown that the recursive processing of multiple measurements at the input of the positioning algorithm improves not only the accuracy of the triangulated position, but also the robustness of the positioning algorithms. We also explain why the very good results given by the Maximum-Likelihood should only be seen as a lower-bound of the system. © 2007 IEEE.
Mufti, F, Mahony, R & Kim, J 1970, 'Super-Resolution of Speed Signs in Video Sequences', 9th Biennial Conference of the Australian Pattern Recognition Society on Digital Image Computing Techniques and Applications (DICTA 2007), 9th Biennial Conference of the Australian Pattern Recognition Society on Digital Image Computing Techniques and Applications (DICTA 2007), IEEE, IEEE, pp. 278-285.
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Mullard, JA & Stewart, MG 1970, 'Repair efficiency and timing of maintenance for RC structures subjected to spatially variable corrosion damage', Applications of Statistics and Probability in Civil Engineering - Proceedings of the 10th International Conference on Applications of Statistics and Probability, ICASP10, pp. 63-64.
Nanda, P & Fernandes, R 1970, 'Quality of Service in Telemedicine', First International Conference on the Digital Society (ICDS'07), First International Conference on the Digital Society (ICDS'07), IEEE, Guadaloupe, French Carribean, pp. 1-6.
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© 2007 IEEE. Telemedicine is one of the fastest growing fields with several innovations happening in managed health-care. With Internet and its infrastructures playing important role in the success of this field, it is not advisable to run some of the critical applications like high quality audio and video involved in telemedicine without proper Quality of Service (QoS) built on to the network. This paper focuses on two telemedicine setups that have been implemented on different backbone technologies. The first case discusses a virtual critical care unit that is setup for communication on an Asynchronous Transfer Mode (ATM) backbone and a possible model on how QoS for important traffic streams can be achieved in ATM. The second case discusses a minimal access operation that was remotely conducted on a patient with the help of telerobotics on a Multi Protocol Label Switching (MPLS) setup and provides a possible solution for achieving quality of service through MPLS in that scenario.
NANDA, P & SIMMONDS, AJ 1970, 'EFFECT OF NETWORK POLICIES ON INTERNET TRAFFIC ENGINEERING', Innovative Applications of Information Technology for the Developing World, Proceedings of the 3rd Asian Applied Computing Conference, PUBLISHED BY IMPERIAL COLLEGE PRESS AND DISTRIBUTED BY WORLD SCIENTIFIC PUBLISHING CO., Kathmandu, Nepal, pp. 300-307.
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Nasimuddin & Esselle, K 1970, 'Achieving high gain and large bandwidth using hybrid DR antennas to feed short horns', 2007 International Conference on Electromagnetics in Advanced Applications, 2007 International Conference on Electromagnetics in Advanced Applications, IEEE, pp. 895-898.
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Most high-gain antennas are narrow band and most wideband antennas have low gains. In this paper we present a low-profile antenna with a large impedance bandwidth, and high gain over the large impedance bandwidth. This is achieved by integrating a wideband hybrid DR on patch (DRoP) with a surface-mounted short horn (SMSH). Performance of antennas with two types of DRoP configurations are studied. We experimentally achieved an excellent gain, greater than 9dBi, over a very wide 2:1 VSWR bandwidth of 28%. © 2007 IEEE.
Nasimuddin & Esselle, KP 1970, 'High-gain wideband circularly polarized stacked microstrip antennas with single microstrip feeds and short horns', 2007 IEEE Antennas and Propagation Society International Symposium, 2007 IEEE Antennas and Propagation Society International Symposium, IEEE, pp. 737-740.
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A single feed system is developed to improve the axial ratio bandwidth of circularly polarized rectangular stacked microstrip antennas (CPSMAs) to about 18% by optimizing the feed location and a few other parameters. A main radiator and a parasitic patch of identical size are considered and the separation between them and location of the feed has been optimized to achieve a good AR bandwidth and minimum AR value. For improving the gain of antenna, surface mounted short horn (SMSH) has been used on the CPSMA. The structure has the directive gain of more than the lOdBic over the impedance bandwidth and a 3dB AR bandwidth of 18.8%. The 10dB return-loss bandwidth is 29.6%). The proposed feed system is very useful for rapid design of circularly polarized stacked microstrip antennas with high gain and large AR bandwidth and also very useful to design high gain and wide band microstrip antennas. © 2007 IEEE.
Nasimuddin & Esselle, KP 1970, 'High-gain wideband circularly polarized stacked microstrip antennas with single microstrip feeds and short horns', 2007 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, VOLS 1-12, IEEE Antennas-and-Propagation-Society International Symposium, IEEE, Honolulu, HI, pp. 692-+.
Nataatmadja, I, Sixsmith, AJ & Dyson, LE 1970, 'Improving Class Participation by Asian Students', Managing Worldwide Operations and Communications with Information Technology, International Conference on Information Resources Management, IGI Publishing, Vancouver, British Columbia, Canada, pp. 74-77.
Nazem, M, Sheng, D & Abbo, AJ 1970, 'Alternative stress integration schemes in large deformation problems of geomechanics', Proceedings of the 10th International Symposium on Numerical Models in Geomechanics NUMOG 10 - Numerical Models in Geomechanics NUMOG 10, pp. 219-224.
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In nonlinear finite element analysis, loads are usually applied in increments and the corresponding incremental displacements are obtained by solving the global equilibrium equations. The incremental strains can be computed from the incremental displacements. These strain increments are then used to determine the stresses at integration points by integrating the nonlinear constitutive equations. In a large deformation analysis, the stress-strain relationships must be objective. The objectivity requires that the constitutive equations be frame-independent such that any rigid body motion does not induce strain within the material. This principle is generally satisfied by introducing an objective stress-rate, such as Jaumann or Truesdell stress rates, into the stress-strain relationships. This study investigates alternative schemes for integrating stress-strain relationships in the large deformation analysis of geotechnical problems. It is shown that the effect of rigid body motion is equivalent to a stress transformation and this transformation can be introduced before, after or during integration of the stress-strain constitutive equations. However there is no theoretical advantage for selecting one of these strategies over the others, except the objectivity consideration. In this paper, three methods for the integration of stress-strain relationships in large deformation analysis are presented. The performance of proposed algorithms are studied and compared by means of numerical examples. The results of this study can be used in development of fast and robust algorithms for stress-integration of constitutive equations in nonlinear finite element analysis. © 2007 Taylor & Francis Group.
Nazem, M, Sheng, D & Abbo, AJ 1970, 'Alternative stress integration schemes in large deformation problems of geomechanics', NUMERICAL MODELS IN GEOMECHANICS: NUMOG X, 10th International Symposium on Numerical Models in Geomechanics (NUMOG X), TAYLOR & FRANCIS LTD, Rhodes, GREECE, pp. 219-224.
Netherton, MD & Stewart, MG 1970, 'Safety hazard and damage risks for monolithic window glazing subject to explosive blast loading', PROCEEDINGS OF THE 7TH INTERNATIONAL CONFERENCE ON SHOCK & IMPACT LOADS ON STRUCTURES, 7th International Conference on Shock and Impact Loans on Structures, CI-PREMIER PTE LTD, PEOPLES R CHINA, Beijing, pp. 415-422.
Ngo, DT, Tuan, HD & Nguyen, HH 1970, 'Jointly Optimal Signature Sequences and Power Allocation for CDMA', 2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07, 2007 IEEE International Conference on Acoustics, Speech, and Signal Processing, IEEE.
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The problems of designing signature sequences and power allocation policy for code-division multiple access (CDMA) are important and have been the subject of intensive research in recent years. Two different criteria adopted in such design problems are the user capacity and the information-theoretic capacity. Regarding the maximization of the information-theoretic capacity, most of the previous works only consider the optimizations of signature sequences and power allocation separately. In contrast, this paper presents a jointly optimal design of signature sequences and power allocation under the sum power constraint. The proposed design is of closed-form and applicable for the general case of correlated signals and colored noise. Numerical results verify the superiority of the proposed design over the existing ones. © 2007 IEEE.
Ngo, DT, Tuan, HD & Nguyen, HH 1970, 'Jointly optimal signature sequences and power allocation for CDMA', 2007 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOL III, PTS 1-3, PROCEEDINGS, 32nd IEEE International Conference on Acoustics, Speech and Signal Processing, IEEE, Honolulu, HI, pp. 661-+.
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The problems of designing signature sequences and power allocation policy for code-division multiple access (CDMA) are important and have been the subject of intensive research in recent years. Two different criteria adopted in such design problems are t
Ngo, H, Guo, W, Vigneswaran, S & Xing, W 1970, 'Potential of submerged membrane bioreactors for wastewater treatment and reuse', Proceedings of International Conference on Cleaner Technologies and Environmental Management, International Conference on Cleaner Technologies and Environmental Management, Allied Publishers Pvt. Ltd., India, pp. 800-805.
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The use of membrane bioreaetor (MBR) has been an increasing issue in replacing the conventional water and wastewater treatment processes to produce high quality treated water. In MBR systems design,the submergedmembranebioreactor (SMBR)can assist in significantlyreducingpower consumptionas the entire treatment activity (such as adsorption/biodegradation,liquid-solid separation, andsludgeaccumulationandwithdrawal)canbe carriedout in a singleunit. In this study, the performance of conventional 5MBR and non-eonventional submerged membrane adsorption bioreactor (SMABR) was evaluated in terms of organic and bacterial removal efficiencies,biomassgrowthvia specificoxygen uptake rate (SOUR) and mixed liquor suspendedsolids (MLSS), and membrane fouling through the development of transmembrane pressure (TMP) and sustainableflux.Theresults indicatethat both ofSMBRand5MBARproducedvery high effiuentquality. However,SMABRappeared to have a better performance as it achieved nearly 100%ofTOC andCOD removalswhile having lowerTMPdevelopment and higher SOUR,The MLSSkept constant (around 10 gIL) after 10 days operation in 5MBAR compared to about 4 gILofMLSS in 5MBR case. In order 10 enhancethe sustainableflux, an idea ofadding a predeterminedamountof spongeinto 5MBRreactor was proposedand tested, The results show that 10% of volume fraction of sponge addition could increase 2 folds of sustainablefluxofSMBRsystemat an air flow rate of9 L/min.
Ngoc, HP, Matsui, Y, Attaviriyanupap, P & Iso, O 1970, 'Sail Generator Feasibility Study', 2007 7th International Conference on Power Electronics and Drive Systems, 2007 7th International Conference on Power Electronics and Drive Systems, IEEE, Bangkok, Thailand, pp. 903-909.
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In this paper, the authors propose a new small size vertical axis wind power generation system for operating in standalone mode at low speed under weak wind conditions. The proposed system consists of a sail turbine and an outer zipper rotor generator. The sail turbine is designed so that it can catch energy from weak wind and also can protect itself from damage under strong wind. The generator is designed for standalone operation without brush and gear. The feasibility study of the proposed generation system is conducted using Fourier expansion. Analytical results show that the target output can be achieved.
Ngoc, HP, Matsui, Y, Attaviriyanupap, P & Iso, O 1970, 'Sail generator feasibility study', 2007 INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND DRIVE SYSTEMS, VOLS 1-4, 7th International Conference on Power Electronics and Drive Systems (PEDS 2007), IEEE, Bangkok, THAILAND, pp. 1102-+.
Nguyen, HT, Ghevondian, N & Jones, TW 1970, 'Detection of nocturnal hypoglycemia in children with type 1 diabetes using a non-invasive glucose monitor', DIABETES, 67th Annual Meeting of the American-Diabetes-Association, AMER DIABETES ASSOC, Chicago, IL, pp. A119-A119.
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A neural network algorithm was developed to detect nocturnal hypoglycemic episodes (BG<=60 mg/dl). Useful information was limited to a 5-hour window from the start of the euglycemia phase to a part of the recovery phase. Associated with the above clinical study, the normalized heart rates of the children increased (1.145±0.101 vs. 1.044±0.110, P<0.0001), their corrected QT intervals increased (1.153±0.138 vs. 1.101±0.131, P<0.02) and their skin impedances reduced significantly (0.900±0.067 vs. 0.924±0.066, P<0.05). The overall dataset was organized into a training set (3 cases) and a validation set (2 cases) randomly selected. Using an optimal neural network architecture with 11 hidden nodes, the estimated BG profiles produced a significant correlation against measured values. The corresponding ROC Curve area for the training set was 0.8565 with 95% CI of (0.7808, 0.9321) and the optimum cut-off point was -0.7897. For the validation set, this neural network algorithm produced a sensitivity of 0.8947 and a specificity of 0.5147. The above result indicates the potential that nocturnal hypoglycemia in children with T1DM can be detected non-invasively and continuously from the physiological parameters measured by HypoMon.
Nguyen, HT, Ghevondian, N, Nguyen, ST & Jones, TW 1970, 'Detection of Hypoglycemic Episodes in Children with Type 1 Diabetes using an Optimal Bayesian Neural Network Algorithm', 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, IEEE, Lyon, France, pp. 3140-3143.
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Hypoglycemia or low blood glucose is a common and serious side effect of insulin therapy in patients with diabetes. HypoMon is a non-invasive monitor that measures some physiological parameters continuously to provide detection of hypoglycemic episodes in Type 1 diabetes mellitus patients (T1DM). Based on heart rate, corrected QT interval of the ECG signal and skin impedance, a Bayesian neural network detection algorithm has been developed to recognize the presence of hypoglycemic episodes. From a clinical study of 25 children with T1DM, associated with hypoglycemic episodes, their heart rates increased (1.152+/-0.157 vs. 1.035+/-0.108, P < 0.0001), their corrected QT intervals increased (1.088+/-0.086 vs. 1.020+/-0.062, P < 0.0001) and their skin impedances reduced significantly (0.679+/-0.195 vs. 0.837+/-0.203, P < 0.0001). The overall data were organized into a training set (14 cases) and a test set 14 cases) randomly selected. Using an optimal Bayesian neural network with 11 hidden nodes, and an algorithm developed from the training set, a sensitivity of 0.8346 and specificity of 0.6388 were achieved for the test set.
Nguyen, HT, Ghevondian, N, Nguyen, ST & Jones, TW 1970, 'Detection of hypoglycemic episodes in children with type 1 diabetes using an optimal Bayesian neural network algorithm', Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, pp. 3140-3143.
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Hypoglycemia or low blood glucose is a common and serious side effect of insulin therapy in patients with diabetes. HypoMon is a non-invasive monitor that measures some physiological parameters continuously to provide detection of hypoglycemic episodes in Type 1 diabetes mellitus patients (TlDM). Based on heart rate, corrected QT interval of the ECG signal and skin impedance, a Bayesian neural network detection algorithm has been developed to recognize the presence of hypoglycemic episodes. From a clinical study of 25 children with T1DM, associated with hypoglycemic episodes, their heart rates increased (1.152±0.157 vs. 1.035±0.108, P<0.0001), their corrected QT intervals increased (1.088±0.086 vs. 1.020±0.062, P<0.0001) and their skin impedances reduced significantly (0.67±0.195 vs. 0.837±0.203, P<0.0001). The overall data were organized into a training set (14 cases) and a test set 14 cases) randomly selected. Using an optimal Bayesian neural network with 11 hidden nodes, and an algorithm developed from the training set, a sensitivity of 0.8346 and specificity of 0.6388 were achieved for the test set. © 2007 IEEE.
Nguyen, HT, Ghevondian, N, Nguyen, ST & Jones, TW 1970, 'Optimal Bayesian neural-network detection of hypoglycemia in children with type 1 diabetes using a non-invasive and continuous monitor (HypoMon)', DIABETES, 67th Annual Meeting of the American-Diabetes-Association, AMER DIABETES ASSOC, Chicago, IL, pp. A115-A115.
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Twenty-five children with T1DM (14.4+/-1.6 years) volunteered for the 4-hour glucose clamp study to provide 28 sets of physiological responses. HypoMon was used to measure the physiological parameters, while the actual blood glucose (BG) levels were collected as reference using Yellow Spring Instruments. The main parameters used for the detection of hypoglycemia are the skin impedance, heart rate, rate-corrected QT interval and their rates of change. A neural network algorithm was developed to detect hypoglycemic episodes (BG<=60 mg/dl). Associated with the above clinical study, the heart rates of the children increased (1.152±0.157 vs. 1.035±0.108, P<0.0001), their corrected QT intervals increased (1.088±0.086 vs. 1.020±0.062, P<0.0001) and their skin impedances reduced significantly (0.679±0.195 vs. 0.837±0.203, P<0.0001). The overall dataset was organized into a training set (14 cases) and a test set (14 cases) randomly selected. We applied the evidence framework for Bayesian inference to the training set and found the feed forward neural network architecture with 11 hidden nodes yielded the highest evidence. Using this optimal neural network architecture, the estimated BG profiles produced a significant correlation (p<0.0001) against measured values. The corresponding ROC Curve area for the training set was 0.9135 with 95% CI of (0.8748, 0.9521) and the optimum cut-off point was -0.09082. For the test set, this neural network algorithm produced a sensitivity of 0.8346 and a specificity of 0.6388.
Nguyen, HTT, Nguyen, ND, Ha, TTH, Nguyen, CKT, Nguyen, BH & Nguyen, TV 1970, 'Knowledge of osteoporosis among tertiary students in Vietnam', JOURNAL OF BONE AND MINERAL RESEARCH, 29th Annual Meeting of the American-Society-for-Bone-and-Mineral-Research, AMER SOC BONE & MINERAL RES, Honolulu, HI, pp. S447-S447.
Nguyen, MT, Kwok, NM, Ha, QP, Li, J & Samali, B 1970, 'Semi-active direct control of civil structure seismic responses using magneto-rheological dampers', Automation and Robotics in Construction - Proceedings of the 24th International Symposium on Automation and Robotics in Construction, International Symposium on Automation and Robotics in Construction, Lokavani Southern Printers, Kochi, India, pp. 157-162.
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As building structures frequently collapse and cause losses of lives and properties, due to excessive vibrations induced during earthquake periods, it is crucial to reduce the structural vibrations. This paper develops a Lyapunov-based controller for Magnetorheological (MR) dampers embedded in building structures to mitigate quake-induced vibrations. In this work, MR dampers are used as semi-active devices, taking the advantages of the fail-safe operation and low power requirement. To enhance the system performance, a Lyapunov-based controller is proposed here for direct control of the supply currents of the MR dampers placed in a multi-storey building. The effectiveness of the proposed technique is verified in simulation by using a ten-storey building model subject to quake-like excitations.
Nguyen, ND, Frost, SA, Center, JR, Eisman, JA & Nguyen, TV 1970, 'Development of a clinical nomogram for individualizing 5-year and 10-year risks of fracture', BONE, 17th Scientific Meeting of the International-Bone-and-Mineral-Society, ELSEVIER SCIENCE INC, Montreal, CANADA, pp. S148-S149.
Nguyen, NT, Nguyen, HT & Su, S 1970, 'Advanced robust tracking control of a powered wheelchair system', 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, IEEE, Lyon, France, pp. 4767-4770.
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In this paper, the dynamic multivariable model of the wheelchair system is obtained including the presence of transportation lags. The triangular diagonal dominance (TDD) decoupling technique is applied to reduce this multivariable control problem into two independent scalar control problems. An advanced robust control technique for the wheelchair has been developed based on the combination of a TDD decoupling strategy and neural network controller design. The results obtained from the real-time implementation confirm that robust performance for this multivariable wheelchair control system can indeed be achieved.
Nguyen, NT, Nguyen, HT & Su, S 1970, 'Advanced robust tracking control of a powered wheelchair system', Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, pp. 4767-4770.
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In this paper, the dynamic multivariable model of the wheelchair system is obtained including the presence of transportation lags. The triangular diagonal dominance (TDD) decoupling technique is applied to reduce this multivariable control problem into two independent scalar control problems. An advanced robust control technique for the wheelchair has been developed based on the combination of a TDD decoupling strategy and neural network controller design. The results obtained from the real-time implementation confirm that robust performance for this multivariable wheelchair control system can indeed be achieved. © 2007 IEEE.
Nguyen, TH, Nguyen, JS, Pham, DM & Nguyen, HT 1970, 'Real-Time Obstacle Detection for an Autonomous Wheelchair Using Stereoscopic Cameras', 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, IEEE, Lyon, France, pp. 4775-4778.
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This paper is concerned with the development of a real-time obstacle avoidance system for an autonomous wheelchair using stereoscopic cameras by severely disabled people. Based on the left and right images captured from stereoscopic cameras mounted on the wheelchair, the optimal disparity is computed using the Sum of Absolute Differences (SAD) correlation method. From this disparity, a 3D depth map is constructed based on a geometric projection algorithm. A 2D map converted from this 3D map can then be employed to provide an effective obstacle avoidance strategy for this wheelchair. Experiment results obtained in a practical environment show the effectiveness of this real-time implementation. © 2007 IEEE.
Nguyen, TT, Tuan, HD & Nguyen, TQ 1970, 'Robust watermarking with improved modified spread spectrum', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, Sydney, Australia, pp. 1108-1112.
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This paper presents a robust approach for spread spectrum (SS) based watermarking process. Unlike the traditional SS or other improvements, this method can work properly in case of absence of watermark and achieve good performance. If the channel has no
Nguyen, TV, Meier, C, Handelsman, DJ, Kraenzlin, M, Kushnir, MM, Rockwood, AL, Meikle, AW, Center, JR, Eisman, JA & Seibel, MJ 1970, 'Serum testosterone in elderly men measured by liquid chromatography-tandem mass spectrometry and radioimmunoassay: Concordance and effect on epidemiologic association', JOURNAL OF BONE AND MINERAL RESEARCH, 29th Annual Meeting of the American-Society-for-Bone-and-Mineral-Research, AMER SOC BONE & MINERAL RES, Honolulu, HI, pp. S277-S277.
Nguyen, TV, Nguyen, ND, Frost, SA, Center, JR & Eisman, JA 1970, 'Bone loss and hip fracture: A revisit with time-varying effects', BONE, 17th Scientific Meeting of the International-Bone-and-Mineral-Society, ELSEVIER SCIENCE INC, Montreal, CANADA, pp. S140-S140.
Nguyen, TV, Nguyen, ND, Frost, SA, Center, LR & Eisman, JA 1970, 'Bone mineral density and hip fracture: A revisit with time-varying effects', JOURNAL OF BONE AND MINERAL RESEARCH, 29th Annual Meeting of the American-Society-for-Bone-and-Mineral-Research, AMER SOC BONE & MINERAL RES, Honolulu, HI, pp. S22-S23.
Nguyen, V, Blumenstein, M, Muthukkumarasamy, V & Leedharn, G 1970, 'Off-line signature verification using enhanced modified direction features in conjunction with neural classifiers and support vector machines', ICDAR 2007: NINTH INTERNATIONAL CONFERENCE ON DOCUMENT ANALYSIS AND RECOGNITION, VOLS I AND II, PROCEEDINGS, 9th International Conference on Document Analysis and Recognition, IEEE COMPUTER SOC, Curitiba, BRAZIL, pp. 734-738.
Ni, W, Guo, B & Yang, L 1970, 'Example based Super-Resolution Algorithm of Video in Contourlet Domain', Fourth International Conference on Image and Graphics (ICIG 2007), 2007 4th International Conference on Image and Graphics, IEEE, PEOPLES R CHINA, Sichuan Univ, Chengdu, pp. 13-+.
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Niazi, M, Wilson, D & Zowghi, D 1970, 'Organisational readiness and software process improvement', Product-Focused Software Process Improvement, Proceedings, Product Focused Software Process Improvement, Springer-Verlag, Riga, Latvia, pp. 96-107.
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This paper reports on the implementation of the SPI readiness model in three large-scale case studies. We have found that organisations with higher CMMA leavelas are more ready for SPI initiaitves than organisations with higher CMMI levels are more ready for SPO initiatives that organisations with low CMMI levels.
Niebecker, KD, Eager, DM & Kubitza, K 1970, 'A Strategy based Scorecard for Cross-Company Project Management in the Automotive Industry', ICAN 2007 Conference, ICAN 2007 Conference, ICAN, Sydney, Australia, pp. 1-24.
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Cross-company and collaborative product development projects are often managed without clearly defined project goals and business alignment. With a shift towards more decentralized and distributed development teams, and an increasing level of collaboration, project transparency is reduced and status measurement is more difficult. To meet the demands, a new strategy-based scorecard method was developed to monitor and control collaborative projects, to measure their performance, and to manage risks. Based on the Balanced Scorecard (BSC) concept by Kaplan and Norton (Kaplan, R. & Norton, D. 1996), the method uses a modified BSC to manage projects on a cross-company and collaborative level. This paper discusses the concept of a Collaborative Project Scorecard with a focus on product development projects in the automotive industry. The development of collaborative strategy maps and integrated measures for project control based on key performance indicators (KPIs) is an essential step for successful collaboration.
Nyuyen, ND, Frost, SA, Center, JR, Eisman, JA & Nguyen, TV 1970, 'Development of a clinical nomogram for individualizing 5-year and 10-year risks of fracture', JOURNAL OF BONE AND MINERAL RESEARCH, 29th Annual Meeting of the American-Society-for-Bone-and-Mineral-Research, AMER SOC BONE & MINERAL RES, Honolulu, HI, pp. S47-S47.
Octavia, JR, Van Den Hoven, E & De Mondt, H 1970, 'Overcoming the distance between friends', People and Computers XXI HCI.But Not as We Know It - Proceedings of HCI 2007: The 21st British HCI Group Annual Conference, BCS-HCI'07, British Computer Society, Lancaster, UK, pp. 79-82.
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Staying in touch is a fundamental aspect in maintaining a long-distance relationship, whether it is in a family context or a friendship. An effective communication appliance can enable families or friends living apart to have a feeling of connectedness and help them to maintain their relationship despite the physical distance. This paper describes the results of an exploration study on people living far away from their families and friends, with a focus on how they stay in touch with their dose friends and overcome the distance. The targeted user group in this study is geographically and physically isolated people. A user study was conducted by means of a survey, focus group and interview. The results show that sharing problems and feelings between two remedy located friends is crucial. Consequently, the design goal was set to enable users to notify and physically comfort each other, in a subtle way, through a remote but shared experience, whenever a problem or feeling occurs. © 2007 Johanna Renny Octavia, Elise van den Hoven & Hans De Mondt.
Onishi, A, Thomas, P, Stuart, BH, Guerbois, JL & Forbes, SL 1970, 'TGMS analysis of the thermal decomposition of pig bone for forensic applications', Medicta 2007: The 8th Mediterranean Conference on Calorimetry and Thermal Analysis, 8th Mediterranean Conference on Calorimetry and Thermal Analysis, Palermo.
Otoom, AF, Gunes, H & Piccardi, M 1970, 'Towards Automatic Abandoned Object Classification in Visual Surveillance Systems', Proceedings of Asia-Pacific Workshop 2007 on Visual Information Processing, Asia-Pacific Workshop on Visual Information Processing, National Cheng Kung University, Tainan, Taiwan, pp. 143-149.
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One of the core components of any visual surveillance system is object classification, where detected objects are classified into different categories of interest. Although in airports or train stations, abandoned objects are mainly luggage or trolleys, none of the existing works in the literature have attempted to classify or recognize trolleys. In this paper, we analyze and classify images of trolleys, bags, persons, and groups of people by using various shape features. We conducted a set of experiments with a number of uncluttered (images collected from the Internet with clear background) and cluttered images (images segmented out from the background in real videos) using various criteria. Our experimental results show that the features extracted enable 100% recognition accuracy for the trolley category. For our four-class object recognition problem, we achieved an overall recognition accuracy of 83.3% and an average false positive rate of 6%.
Otsuki, N, Yoshizawa, S & Miyanaga, Y 1970, 'Evaluation of Adaptive Modulation and Coding Applied on a 400 Mbps OFDM Wireless Communication System', SYSTEMS MODELING AND SIMULATION: THEORY AND APPLICATIONS, ASIA SIMULATION CONFERENCE 2006, Asian Simulation Conference, Springer Japan, Tokyo, JAPAN, pp. 430-434.
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Ou, Y, Cao, L, Yu, T & Zhang, C 1970, 'Detecting Turning Points of Trading Price and Return Volatility for Market Surveillance Agents', 2007 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology - Workshops, 2007 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology - Workshops, IEEE, pp. 491-494.
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Trading agent concept is very useful for trading strategy design and market mechanism design. In this paper, we introduce the use of trading agent for market surveillance. Market surveillance agents can be developed for market surveillance officers and management teams to present them alerts and indicators of abnormal market movements. In particular, we investigate the strategies for market surveillance agents to detect the impact of company announcements on market movements. This paper examines the performance of segmentation on the time series of trading price and return volatility, respectively. The purpose of segmentation is to detect the turning points of market movements caused by announcements, which are useful to identify the indicators of insider trading. The experimental results indicate that the segmentation on the time series of return volatility outperforms that on the time series of trading price. It is easier to detect the turning points of return volatility than the turning points of trading price. The results will be used to code market surveillance agents for them to monitor abnormal market movements before the disclosure of market sensitive announcements. In this way, the market surveillance agents can assist market surveillance officers with indicators and alerts. © 2007 IEEE.
Ou, Y, Cao, L, Yu, T & Zhang, C 1970, 'Detecting Turning Points of Trading Price and Return Volatility for Market Surveillance Agents', 2007 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology - Workshops, 2007 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology - Workshops, IEEE, Fremont, CA, pp. 491-+.
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Trading agent concept is very useful for trading strategy design and market mechanism design. In this paper, we introduce the use of trading agent for market surveillance. Market surveillance agents can be developed for market surveillance officers and management teams to present them alerts and indicators of abnormal market movements. In particular, we investigate the strategies for market surveillance agents to detect the impact of company announcements on market movements. This paper examines the performance of segmentation on the time series of trading price and return volatility, respectively. The purpose of segmentation is to detect the turning points of market movements caused by announcements, which are useful to identify the indicators of insider trading. The experimental results indicate that the segmentation on the time series of return volatility outperforms that on the time series of trading price. It is easier to detect the turning points of return volatility than the turning points of trading price. The results will be used to code market surveillance agents for them to monitor abnormal market movements before the disclosure of market sensitive announcements. In this way, the market surveillance agents can assist market surveillance officers with indicators and alerts.
Ozgur Isik, Esselle, KP & Yuehe Ge 1970, 'Compact microstrip and CPW duplexers using complementary and conventional logarithmic spiral resonators', 2007 IEEE Antennas and Propagation Society International Symposium, 2007 IEEE Antennas and Propagation Society International Symposium, IEEE, pp. 4977-4980.
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Paisitkriangkrai, S, Shen, C & Zhang, J 1970, 'An Experimental Evaluation of Local Features for Pedestrian Classification', 9th Biennial Conference of the Australian Pattern Recognition Society on Digital Image Computing Techniques and Applications (DICTA 2007), 9th Biennial Conference of the Australian Pattern Recognition Society on Digital Image Computing Techniques and Applications (DICTA 2007), IEEE, Glenelg, SA, pp. 53-60.
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The ability to detect pedestrians is a first important step in many computer vision applications such as video surveillance. This paper presents an experimental study on pedestrian detection using state-of-the-art local feature extraction and support vec
Pal, U, Sharma, N, Wakabayashi, T & Kimura, F 1970, 'Handwritten Numeral Recognition of Six Popular Indian Scripts', Ninth International Conference on Document Analysis and Recognition (ICDAR 2007) Vol 2, Ninth International Conference on Document Analysis and Recognition (ICDAR 2007) Vol 2, IEEE, pp. 749-753.
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India is a multi-lingual multi-script country but there is not much work towards handwritten character recognition of Indian languages. In this paper we propose a modified quadratic classifier based scheme towards the recognition of off-line handwritten numerals of six popular Indian scripts. Here we consider Devnagari, Bangla, Telugu, Oriya, Kannada and Tamil scripts for our experiment. The features used in the classifier are obtained from the directional information of the numerals. For feature computation, the bounding box of a numeral is segmented into blocks and the directional features are computed in each of the blocks. These blocks are then down sampled by a Gaussian filter and the features obtained from the down sampled blocks are fed to a modified quadratic classifier for recognition. Here we have used two sets of feature. We have used 64 dimensional features for high-speed recognition and 400 dimensional features for high-accuracy recognition in our proposed system. A five-fold cross validation technique has been used for result computation and we obtained 99.56%, 98.99%, 99.37%, 98.40%, 98.71% and 98.51% accuracy from Devnagari, Bangla, Telugu, Oriya, Kannada, and Tamil scripts, respectively.
Pal, U, Sharma, N, Wakabayashi, T & Kimura, F 1970, 'Off-Line Handwritten Character Recognition of Devnagari Script', Ninth International Conference on Document Analysis and Recognition (ICDAR 2007), Ninth International Conference on Document Analysis and Recognition (ICDAR 2007), IEEE, pp. 496-500.
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In this paper we present a system towards the recognition of off-line handwritten characters of Devnagari, the most popular script in India. The features used for recognition purpose are mainly based on directional information obtained from the arc tangent of the gradient. To get the feature, at first, a 2 x 2 mean filtering is applied 4 times on the gray level image and a non-linear size normalization is done on the image. The normalized image is then segmented to 49 x 49 blocks and a Roberts filter is applied to obtain gradient image. Next, the arc tangent of the gradient (direction of gradient) is initially quantized into 32 directions and the strength of the gradient is accumulated with each of the quantized direction. Finally, the blocks and the directions are down sampled using Gaussian filter to get 392 dimensional feature vector. A modified quadratic classifier is applied on these features for recognition. We used 36172 handwritten data for testing our system and obtained 94.24% accuracy using 5-fold cross-validation scheme. © 2007 IEEE.
Palmer, CG, Gothe, J, Mitchell, CA, Riedy, C, Sweetapple, K, McLaughlin, SM, Hose, GC, Lowe, M, Goodall, H, Green, T, Sharma, D, Fane, SA, Brew, K & Jones, PR 1970, 'Finding integration pathways: developing a transdisciplinary (TD) approach for the Upper Nepean Catchment.', Proceedings of the 5th Australian Stream Management Conference. Australian rivers: making a difference, Australian Stream Management Conference, Charles Sturt University, Albury, NSW, Australia., pp. 306-311.
Parnell, J & Dowdell, B 1970, 'Regulation of heavy vehicle engine brake noise in Australia', 14th International Congress on Sound and Vibration 2007, ICSV 2007, pp. 3871-3878.
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Engine brake noise is a long standing issue both in Australia and overseas with it being generally accepted that it is the character of this noise rather than its loudness that leads to most complaints. To date, the majority of the investigation and research into engine brake noise, and possible solutions, has been commissioned by Australian road agencies. There is now sufficient research in Australia, and agreement from all stakeholders, that action must be taken to provide a foundation for in-service regulations to control excessive engine brake noise. This paper describes the process being followed to achieve scientific acceptance of a method to identify excessively noisy engine brakes and its passage towards regulation in Australia. Steps in progressing this method have included developing a Modulated RMS algorithm that was capable of: • discriminating between annoying and less annoying engine brake noise; • discriminating between muffler effectiveness; • correlating well with the subjective response of panel members to engine brake noise; • being coded in software so that large amounts of roadside noise data can rapidly analysed.
Pattinson, HM & Sood, SC 1970, 'Marketers Inventing the Future: Scenario Planning for Marketing Action', Foresight 2007 Conference Papers, Foresight 2007, University of Strathclyde, Glasgow, UK, pp. 1-14.
Paul, G, Liu, DK, Kirchner, N & Webb, S 1970, 'Safe and Efficient Autonomous Exploration Technique for 3D Mapping of a Complex Bridge Maintenance Environment', Automation and Robotics in Construction ― Proceedings of the 24th International Symposium on Automation and Robotics in Construction, 24th International Symposium on Automation and Robotics in Construction, International Association for Automation and Robotics in Construction (IAARC), Kochi, Kerala, India, pp. 99-104.
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This paper describes a technique for autonomously exploring a complex steel bridge environment using a 6DOF anthropomorphic robotic arm, instrumented with a laser range scanner. Potential knowledge ained from a 3D range scan at an end-effector position and orientation (pose) is estimated, then arm configurations which avoid obstacles and unknown areas are computed using an optimisation approach. Safe pose solutions are compared in terms of potential gain of new weighted-information and minimal joint movement. Both simulations and robotic platform results show exploration of unknown areas occurs in a consistent and timely manner - taking an average of 4.5secs to calculate the next safe valid robot arm poses. Complex environments, typical in bridge maintenance, can be explored using an anthropomorphic arm equipped with this technique.
Pedraza, L, Dissanayake, G, Valls Miro, J, Rodriguez-Losada, D & Matia, F 1970, 'BS-SLAM: Shaping the World', Robotics: Science and Systems III, Robotics: Science and Systems 2007, Robotics: Science and Systems Foundation, Atlanta, GA, USA, pp. 1-8.
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This paper presents BS-SLAM, a simultaneous localization and mapping algorithm for use in unstructured environments that is effective regardless of whether features correspond to simple geometric primitives such as points and lines or not. The coordinates of the control points defining a set of B-splines are used to form a complete and compact description of the environment, thus making it feasible to use an extended Kalman filter based SLAM algorithm. The proposed method is the first known EKF-SLAM implementation capable of describing both straight and curve features in a parametric way. Appropriate observation equation that allows the exploitation of virtually all observations from a range sensor such as the ubiquitous laser range finder is developed. Efficient strategies for computing the relevant Jacobians, perform data association, initialization and expanding the map are presented. The effectiveness of the algorithms is demonstrated using experimental data.
Peng, X & Niu, Z 1970, 'The Research of the Personalization', 2007 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology - Workshops, 2007 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology - Workshops, IEEE, pp. 107-110.
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This paper presents a personalization recommendation model to recommend potentially interesting resources to users based on the preference characteristics of users. This model consists of two algorithms: a building algorithm of user model and a recommending algorithm of resource. The first algorithm aims to build the user model, according to searched keywords and behaviors of users. Founded on the model, ordered resources are recommend to users by the second algorithm. © 2007 IEEE.
Peng, X & Niu, Z 1970, 'The Research of the Personalization', 2007 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology - Workshops, 2007 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology - Workshops, IEEE.
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Pérez, Ó, Piccardi, M, García, J & Molina, JM 1970, 'Comparison of Classifiers for Human Activity Recognition', Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), International Work-Conference on the Interplay, Springer Berlin Heidelberg, La Manga del Mar Menor, Spain, pp. 192-201.
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The human activity recognition in video sequences is a field where many types of classifiers have been used as well as a wide range of input features that feed these classifiers. This work has a double goal. First of all, we extracted the most relevant features for the activity recognition by only utilizing motion features provided by a simple tracker based on the 2D centroid coordinates and the height and width of each person's blob. Second, we present a performance comparison among seven different classifiers (two Hidden Markov Models (HMM), a J.48 tree, two Bayesian classifiers, a classifier based on rules and a Neuro-Fuzzy system). The video sequences under study present four human activities (inactive, active, walking and running) that have been manual labeled previously. The results show that the classifiers reveal different performance according to the number of features employed and the set of classes to sort. Moreover, the basic motion features are not enough to have a complete description of the problem and obtain a good classification. © Springer-Verlag Berlin Heidelberg 2007.
Pérez, Ó, Piccardi, M, García, J, Patricio, MÁ & Molina, JM 1970, 'Comparison Between Genetic Algorithms and the Baum-Welch Algorithm in Learning HMMs for Human Activity Classification', Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Evo Workshops, Springer Berlin Heidelberg, Valencia, Spain, pp. 399-406.
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A Hidden Markov Model (HMM) is used as an efficient and robust technique for human activities classification. The HMM evaluates a set of video recordings to classify each scene as a function of the future, actual and previous scenes. The probabilities of transition between states of the HMM and the observation model should be adjusted in order to obtain a correct classification. In this work, these matrixes are estimated using the well known Baum-Welch algorithm that is based on the definition of the real observations as a mixture of two Gaussians for each state. The application of the GA follows the same principle but the optimization is carried out considering the classification. In this case, GA optimizes the Gaussian parameters considering as a fitness function the results of the classification application. Results show the improvement of GA techniques for human activities recognition. © Springer-Verlag Berlin Heidelberg 2007.
Piccardi, M & Perez, O 1970, 'Hidden Markov Models with Kernel Density Estimation of Emission Probabilities and their Use in Activity Recognition', 2007 IEEE Conference on Computer Vision and Pattern Recognition, 2007 IEEE Conference on Computer Vision and Pattern Recognition, IEEE, Minneapolis, pp. 1-8.
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In this paper, we present a modified hidden Markov model with emission probabilities modelled by kernel density estimation and its use for activity recognition in videos. In the proposed approach, kernel density estimation of the emission probabilities is operated simultaneously with that of all the other model parameters by an adapted Baum-Welch algorithm. This allows us to retain maximum-likelihood estimation while overcoming the known limitations of mixture of Gaussions in modelling certain probability distributions. Experiments on activity recognition have been performed on groundtruthed data from the CAVIAR video surveillance database and reported in the paper. The error on the training and validation sets with kernel density estimation remains around 14-16% while for the conventional Gaussian mixture approach varies between 15 and 24%, strongly depending on the initial values chosen for the parameters. Overall, kernel density estimation proves capable of providing more flexible modelling of the emission probabilities and, unlike Gaussian mixtures, does not suffer from being highly parametric and of difficult initialisation. © 2007 IEEE.
Piccardi, M & Perez, O 1970, 'Hidden Markov models with kernel density estimation of emission probabilities and their use in activity recognition', 2007 IEEE CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION, VOLS 1-8, IEEE Conference on Computer Vision and Pattern Recognition, IEEE, Minneapolis, MN, pp. 3774-+.
Pileggi, SF, Palau, CE & Esteve, M 1970, 'An Adaptive and Flexible Fault Tolerance Mechanism Designed on Multi-behavior Agents for Wireless Sensor/Actuator Network', 2007 International Conference on Sensor Technologies and Applications (SENSORCOMM 2007), 2007 International Conference on Sensor Technologies and Applications (SENSORCOMM 2007), IEEE, pp. 283-288.
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In the last few years, WSN has been object of an intense research activity that has determined an important improvement by technologic and computation point of view both. The notable level got and the increasing request of applications designed over Sensor Networks make WSN commercial diffusion next to be a fact. One of key issues for commercial diffusion of WSN is related to the robustness of architectures. An adaptive and flexible fault tolerant mechanism for WSN is proposed in the paper. Considering the tradeoffs between robustness and energy efficiency as central issue, a programming model based on multi-behavior agents that can guarantee an efficient, dynamic and extendible implementation is proposed too. © 2007 IEEE.
Pileggi, SF, Palau, CE & Esteve, M 1970, 'Analysis techniques and models for resource optimization in Wireless Sensor/Actuator Network environment', WIRELESS SENSOR AND ACTOR NETWORKS, 1st International Conference on Wireless Sensor and Actor Networks (WSAN'07), Springer US, Albacete, SPAIN, pp. 23-34.
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Pileggi, SF, Palau, CE & Esteve, M 1970, 'Integrating wireless sensor network with grid computing and RFID technology for products monitoring into airports', Proceedings of the 6th IASTED International Conference on Communication Systems and Networks, CSN 2007, 6th IASTED International Conference on Communication Systems and Networks, ACTA PRESS ANAHEIM, Palma de Mallorca, SPAIN, pp. 177-181.
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Proposed work is focused on the design of a large scale application for products monitoring into airports. To guarantee an advanced and high performance solution, the architecture designed integrates Grid Computing, Wireless Sensor Network (WSN) and Radio-Frequency Identification (RFID) technology. The integrated platform is service oriented and tries to propose an architectural model that addresses the typical requirements of a modern Virtual Organization but providing, at the same time, the components based on resource limited technologies (WSN and RFID) with ad-hoc mechanisms for efficient energy management.
Pingzhou Tu, Xiaojing Huang & Dutkiewicz, E 1970, 'Diversity performance of interleaved spread spectrum OFDM signals over frequency selective multipath fading channels', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, Sydney, Australia, pp. 184-189.
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In this paper we propose an interleaved spread spectrum orthogonal frequency division multiplexing (ISS-OFDM) system for achieving both frequency diversity and time diversity and investigate the system performance over frequency selective fading channels. The purpose is to exploit the diversity capability of OFDM systems, develop efficienct spectrum spreading technique and improve the system performance against frequency selective channel fading. At the transmitter, the ISS-OFDM signal is generated by employing spread spectrum modulation and interleaving techniques. At the receiver, the received signals are combined by using maximum ratio combining (MRC) technique. The simulation indicates that the ISS-OFDM system has improved performance in multipath fading channels. Another unique characteristic is that the spectrum spreading factor and diversity order provided by the system are reconfigurable to achieve cognitive communications. © 2007 IEEE.
Pingzhou Tu, Xiaojing Huang & Dutkiewicz, E 1970, 'Peak-to-average power ratio performance of interleaved spread spectrum OFDM signals', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, Sydney, AUSTRALIA, pp. 82-86.
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Pontt, J, Rodriguez, J, Dixon, J, San Martin, J, Aguilera, R & Rebolledo, J 1970, 'Up-Rating of Electrical Drives in Mining Installations', 2007 IEEE Industry Applications Annual Meeting, 2007 IEEE Industry Applications Annual Meeting, IEEE, New Orleans, LA, pp. 1741-+.
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Pontt, J, Rodriguez, J, Dixon, J, San Martin, J, Aguilera, R & Rebolledo, J 1970, 'Up-Rating of Electrical Drives in Mining Installations', 2007 IEEE Industry Applications Annual Meeting, 2007 IEEE Industry Applications Annual Meeting, IEEE.
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Pontt, J, Rodriguez, J, San Martin, J & Aguilera, R 1970, 'Mitigation of Sympathetic Interaction between Power Transformers Fed by Long over Head Lines Caused by Inrush Transient Currents', 2007 IEEE Industry Applications Annual Meeting, 2007 IEEE Industry Applications Annual Meeting, IEEE.
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Pontt, J, Rodriguez, J, San Martin, J & Aguilera, R 1970, 'Mitigation of Sympathetic Interaction between Power Transformers Fed by Long over Head Lines Caused by Inrush Transient Currents', 2007 IEEE Industry Applications Annual Meeting, 2007 IEEE Industry Applications Annual Meeting, IEEE, New Orleans, LA, pp. 1360-1363.
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Pradabpet, C, Miyanaga, Y & Dejhan, K 1970, 'PAPR reduction in OFDM systems by hybrid algorithm based on the PTS and APPR methods', Proceedings of the 4th IASTED Asian Conference on Communication Systems and Networks, AsiaCSN 2007, pp. 19-23.
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In this report, we propose a new PAPR reduction technique by a hybrid algorithm based on a partial transmit sequence (PTS) and adaptive peak power reduction (APPR) method. This technique is used in a system based on Orthogonal Frequency Division Multiplexing (OFDM). OFDM has many orthogonally modulated subcarriers which unexpectedly give a large peak to average power ratio (PAPR) and tends to reduce the power efficiency of a RF amplifier. The input data using the PTS method, a sequence of input data is rearranged for the reduction of PAPR and fed to APPR process. The APPR method controls the peak level of the modulation signal based on an adaptive algorithm which reduces modulation signals over a predefined range. A proposed reduction method consists of these two methods and realizes bolt advantages at the same time. As simulation results, the proposed method shows the improvement on PAPR and also the bit error rate performance of an OFDM system.
Pradabpet, C, Yoshizawa, S, Miyanaga, Y & Dejhan, K 1970, 'A new PAPR reduction in OFDM-WLAN systems by hybrid algorithm of PTS and APPR methods', 2007 Asia-Pacific Conference on Communications, 2007 Asia Pacific Conference on Communications, IEEE.
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Pradhan, B & Mansor, S 1970, 'Three dimensional terrain data compression using second generation wavelets', WIT Transactions on Information and Communication Technologies, Vol 38, DATA MINING & INFORMATION ENGINEERING 2007, WIT Press, p. 35.
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Qumer, A 1970, 'Defining an Integrated Agile Governance for Large Agile Software Development Environments.', XP, Agile Processes in Software Engineering and Extreme Programming, Springer, Como, Italy, pp. 157-160.
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This paper highlights the important aspect of IT governance, with the objective of defining an unaddressed aspect of agile governance, by the application of an iterative, inductive, instantaneous analysis and emergent interpretation of appropriate data-grounded conceptual categories of IT governance. An effective agile governance approach will facilitate the achievement of desired discipline, rationale, business value, improved performance, monitoring, as well as control of large agile software development environments by aligning business goals and agile software development goals. © Springer-Verlag Berlin Heidelberg 2007.
Qumer, A & Henderson-Sellers, B 1970, 'An agile toolkit to support agent-oriented and service-oriented computing mechanisms', Product-Focused Software Process Improvement, Proceedings, Product Focused Software Process Improvement, Springer, Riga, Latvia, pp. 222-236.
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The complex nature of the software development paradigm and the rapid acceptance of emerging abstraction mechanisms, such as agent-oriented and service-oriented computing, highlight the increasing need for re-evaluation of existing software development approaches that focus on agile software development methodologies (primarily originating in object-oriented technology); since existing object-oriented, structure-oriented and component-oriented approaches embodied in an agile approach cannot be applied immediately to agent and service-oriented computing. Therefore, we present here, an agile toolkit (Java-based) to facilitate the construction of multi-abstraction or mabstraction situation-specific agile processes for software development projects. This paper only presents the newly emergent abstraction concepts of agent and service, and does not discuss the well-established object-oriented mechanism used in current agile approaches. © Springer-Verlag Berlin Heidelberg 2007.
Qumer, A & Henderson-Sellers, B 1970, 'ASOP: An Agile Service-Oriented Process', NEW TRENDS IN SOFTWARE METHODOLOGIES, TOOLS AND TECHNIQUES, International Conference on Software Methods and Tools, IOS Press, Rome, Italy, pp. 83-92.
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The increasing prevalence of service-oriented architecture (SOA) has introduced another layer of abstraction (service-oriented) on top of already well-known object-oriented and component-oriented layers of abstractions. However, it has been found that the current traditional phase-based approach towards the development of SOA-based applications, contrarily, lacks agility, which mitigates against the needed ability to quickly respond to changes in business processes. Therefore, here, we suggest an agile approach to implement a flexible SOA. This paper, based on our industrial experience and case studies, presents the agile service-oriented process (ASOP) that had been constructed by using the agile software solution framework (ASSF), agile toolkit (ATK), situational method engineering (SME) and agile adoption and improvement model (AAIM) for the development of one of our industry (case study) service-oriented e-health project.
Qumer, A & Henderson-Sellers, B 1970, 'ASOP: An Agile Service-Oriented Process', Frontiers in Artificial Intelligence and Applications, pp. 83-92.
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The increasing prevalence of service-oriented architecture (SOA) has introduced another layer of abstraction (service-oriented) on top of already well-known object-oriented and component-oriented layers of abstractions. However, it has been found that the current traditional phase-based approach towards the development of SOA-based applications, contrarily, lacks agility, which mitigates against the needed ability to quickly respond to changes in business processes. Therefore, here, we suggest an agile approach to implement a flexible SOA. This paper, based on our industrial experience and case studies, presents the agile service-oriented process (ASOP) that had been constructed by using the agile software solution framework (ASSF), agile toolkit (ATK), situational method engineering (SME) and agile adoption and improvement model (AAIM) for the development of one of our industry (case study) service-oriented e-health project.
Qumer, A & Henderson-Sellers, B 1970, 'Construction of an agile software product-enhancement process by using an agile software solution framework (ASSF) and situational method engineering', COMPSAC 2007: THE THIRTY-FIRST ANNUAL INTERNATIONAL COMPUTER SOFTWARE AND APPLICATIONS CONFERENCE, VOL I, PROCEEDINGS, International Computer Software and Applications Conference, IEEE Computer Society, Beijing, China, pp. 539-542.
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Introducing a change in any software development organization is challenging; as this paper demonstrates by means of a case study for the adoption of agile practices in a large software development organization. The case study research findings indicate that a situational method engineering approach together with an agile software solution framework (ASSF) can be used to create a feasible and usable hybrid software development method by combining agile practices and formal practices for a particular situation in large software development organizations. ©2007 IEEE.
Raad, IS & Xiaojing Huang 1970, 'A new approach to BSOFDM - parallel concatenated spreading matrices OFDM', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, Sydney, Australia, pp. 77-81.
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This paper proposes a new approach to Block Spread OFDM called Parallel Concatenated Spreading Matrices OFDM (PCSM-OFDM). While BSOFDM improved the overall BER performance on OFDM in frequency selective channels, this new approach further improves the BER of BSOFDM by a 3dB gain. This is achieved through increasing the diversity of the transmitted samples by concatenating two spreading matrices in parallel to BSOFDM. © 2007 IEEE.
Raad, IS, Huang, X & Lowe, D 1970, 'A Study of Different Angles for the New Spread Matrix for BSOFDM in UWB Channels', 2007 Third International Conference on Wireless and Mobile Communications (ICWMC'07), 2007 Third International Conference on Wireless and Mobile Communications (ICWMC'07), IEEE, Guadeloupe, French Caribbean.
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This paper presents a study into different angles for the New spread matrix developed for BSOFDM. It varies the angles for the matrix to develop different constellation schemes which are useful in overcoming the frequency selective channels which are encountered in mobile communication systems. Previously it has been discussed that this new matrix (the rotation matrix) has some advantages over Hadamard and the rotated Hadamard matrix in certain channels. This paper presents a study of varies angles with this new matrix over the UWB channels CM1 to CM4.1 © 2007 IEEE.
Raad, IS, Huang, X & Lowe, D 1970, 'A study of different decoders for the new rotation spreading matrix for block spread OFDM in UWB channels', 2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications, 2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications, IEEE, Penang, MALAYSIA, pp. 372-376.
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Raad, IS, Huang, X & Lowe, D 1970, 'Higher order rotation spreading matrix for block spread OFDM', 2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications, 2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications, IEEE, Penang, MALAYSIA, pp. 377-381.
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Raad, IS, Huang, X & Raad, R 1970, 'A Study of Different Angles for Higher Order Rotation Spreading Matrix for BSOFDM in UWB Channels', The 2nd International Conference on Wireless Broadband and Ultra Wideband Communications (AusWireless 2007), The 2nd International Conference on Wireless Broadband and Ultra Wideband Communications (AusWireless 2007), IEEE, pp. 18-23.
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This paper presents a study into different angles for higher order Rotation spreading matrix developed for BSOFDM. It was shown previously that for block size M = 2 that the angle α = π/3 achieved the best result in terms of BER in UWB channels. It was discovered that this was no longer the case when the higher order Rotation spreading matrix was used for larger M sized blocks and that other angles produced better results which proves that the Rotation spreading matrix advantage over existing spreading matrices such as the Hadamard is its flexibility to be adapted to different communication systems. © 2007 IEEE.
Raad, IS, Huang, X & Raad, R 1970, 'New Higher Order Rotation Spreading Matrix for BSOFDM', The 2nd International Conference on Wireless Broadband and Ultra Wideband Communications (AusWireless 2007), The 2nd International Conference on Wireless Broadband and Ultra Wideband Communications (AusWireless 2007), IEEE, pp. 17-22.
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Previously a new matrix called the Rotation spreading matrix was proposed for Block Spread OFDM which had advantages over other well known spreading matrices such as the Hadamard in frequency selective channels such the UWB channels. Then a new paper discussed a method to expand this Rotation spreading matrix into higher order allowing the system BSOFDM to achieve higher order matrices which still showed excellent orthogonal properties which can be used in these frequency selective channels. This work is continued on the Rotation spreading matrix and this paper presents another method to expand the Rotation spreading matrix based on Complete Complementary Sets of Sequences which the authors have shown to have excellent properties in higher order matrices. This paper discusses the new method and presents a comparison between the two mentioned methods. © 2007 IEEE.
Raban, R, Dyson, LE & Lawrence, EM 1970, 'mInteract: Talk with Your Class', UTS Teaching and Learning Forum, University of Technology, Sydney.
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Poster presentation, with abstract published on conference website
Rabbachin, A, Quek, TQS, Pinto, PC, Oppermann, I & Win, MZ 1970, 'UWB Energy Detection in the Presence of Multiple Narrowband Interferers', 2007 IEEE International Conference on Ultra-Wideband, 2007 IEEE International Conference on Ultra-Wideband, IEEE, pp. 857-862.
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There has been an emerging interest in non-coherent ultrawideband (UWB) communications, particularly as a technology for low-data rate UWB applications, due to its low-complexity and low-power consumption. In this paper, we evaluate the performance of the energy detector (ED) receiver in terms of bit error probability (BEP). We consider an ED receiver based on a conventional square-law detector and binary pulse position modulation (BPPM). We analyze the BEP in a multipath fading channel, both in the absence and presence of narrowband interference (NBI). We consider two cases: 1) single NBI, where the interfering node is located at a fixed distance from the receiver, and 2) multiple NBI, where the interfering nodes are scattered according to a spatial Poisson process. Our framework is simple enough to allow a tractable analysis and provide insights that can be of value in the design of practical UWB systems subject to interference. © 2007 IEEE.
Rahman, BMA, Agrawal, A, Grattan, KTV & Obayya, SSA 1970, 'Modal Solutions For Square And Circular Rod Photonic Crystals By The Finite Element Method', Integrated Photonics and Nanophotonics Research and Applications / Slow and Fast Light, Integrated Photonics and Nanophotonics Research and Applications, OSA.
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Ren, Z, Fang, X, Wang, S, Qiu, J, Zhu, JG, Guo, Y, Yang, X, Ha, JH, Wang, Z, Sun, Y & Zhang, J 1970, 'Design optimization of an interior-type permanent magnet BLDC motor using PSO and improved MEC', 2007 INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS, VOLS 1-4, International Conference on Electrical Machines and Systems, IEEE, Seoul, SOUTH KOREA, pp. 621-+.
Ren, Z, Fang, X, Wang, S, Qiu, J, Zhu, JG, Guo, Y, Yang, X, Ha, JH, Wang, Z, Sun, Y & Zhang, J 1970, 'Design optimization of an interior-type permanent magnet BLDC motor using PSO and improved MEC', Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007, International Conference on Electrical Machines and Systems, IEEE, Seoul, Korea, pp. 1350-1353.
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In this paper, an improved magnetic equivalent circuit (MEC) is applied to calculate the nonlinear magnetic field in an interior-type permanent-magnet (IPM) brushless DC (BLDC) motor. Compared with the finite element method, the MEC method is much more time efficient, whereas compared with the conventional MEC method, the improved MEC is more accurate since it takes the complicate topological structure of the motor into account. A rough design of the IPM BLDC motor was firstly conducted by the improved MEC method. The particle swarm optimization (PSO) algorithm is then employed to refine the design for optimal structural parameters that result in the lowest cost and highest performance.
Rengasamy, M, Dutkiewicz, E & Hedley, M 1970, 'MAC design and analysis for wireless sensor networks with co-operative localisation', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, pp. 942-947.
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Co-operative localisation in wireless sensor networks (WSNs) is a method in which wireless sensor nodes interact with each other as peers to determine their physical position. In such networks it is crucial for communication between nodes to be contention free to meet the strict timing requirements. Medium Access Control (MAC) protocols provide the strongest influence over contention control in WSNs. The focus of this work is the design and analysis of a WSN MAC protocol suitable for supporting co-operative localisation. This paper presents a design overview of the MAC protocol and details its control structure. Preliminary simulation results are also presented to evaluate network formation aspects of the protocol. © 2007 IEEE.
Riedel, S & Gabrys, B 1970, 'Dynamic Pooling for the Combination of Forecasts generated using Multi Level Learning', 2007 International Joint Conference on Neural Networks, 2007 International Joint Conference on Neural Networks, IEEE, Orlando, FL, pp. 454-+.
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Ruan, D, Lu, J, Laes, E, Zhang, G, Wu, F & Hardeman, F 1970, 'Fuzzy multi-criteria group decision support in long-term options of Belgian energy policy', NAFIPS 2007 - 2007 Annual Meeting of the North American Fuzzy Information Processing Society, North American Fuzzy Information Processing Society Conference, IEEE, San Diego, CA, pp. 496-501.
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Decision making requires multiple perspectives of different people as one single decision maker may have not enough knowledge to well solve a problem alone. This is particularly true when the decision environment becomes more complex. More organizational decisions are made now in groups than ever before. Group decision making is thus a process of arriving at a judgment or a solution for a decision problem based on the input and feedback of multiple individuals. At the same time in practice, multi-criteria problems at tactical and strategic levels often involve fuzziness in their criteria and decision makers' judgments. Relevant alternatives are evaluated according to a number of criteria. Fuzzy logic based multi-criteria group decision support is justified to analysis long-term options for Belgian energy policy in this paper. ©2007 IEEE.
Ruiz, N, Taib, R, Shi, YD, Choi, E & Chen, F 1970, 'Using pen input features as indices of cognitive load', Proceedings of the 9th international conference on Multimodal interfaces, ICMI07: International Conference on Multimodal Interface, ACM, Nagoya, JAPAN, pp. 315-+.
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Rujikiatkamjorn, C & Indraratna, B 1970, 'Analysis of Radial Vacuum-Assisted Consolidation Using 3D Finite Element Method', Advances in Measurement and Modeling of Soil Behavior, Geo-Denver 2007, American Society of Civil Engineers, p. 12.
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In this study, a 3D numerical modelling of a single vertical drains consolidation incorporating vacuum preloading considering both vertical and horizontal drainage is presented. The effects of nonlinear soil compressibility, varying permeability and vacuum pressure distribution along the drain are examined through the dissipation of average excess pore pressure and associated settlement. A selected case history, using 3D finite element method, is employed to analyse two embankments constructed at the Second Bangkok International Airport, Thailand stabilised with prefabricated vertical drains and vacuum preloading. The behaviour of this embankment including settlements and excess pore pressures is then compared with the numerical predictions. This study reveals a close agreement between the predictions results obtained from the numerical model and the field measurements. Copyright ASCE 2007.
Ruta, D & Gabrys, B 1970, 'Neural Network Ensembles for Time Series Prediction', 2007 International Joint Conference on Neural Networks, 2007 International Joint Conference on Neural Networks, IEEE, Orlando, FL, pp. 1204-1209.
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Ruta, D, Gabrys, B, Maroulis, G & Simos, TE 1970, 'Reducing Spatial Data Complexity for Classification Models', AIP Conference Proceedings, Computational Methods in Science and Engineering, AIP, Corfu, GREECE, pp. 603-613.
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Saha, SC, Lei, C & Patterson, JC 1970, 'On the natural convection boundary layer adjacent to an inclined flat plate subject to ramp heating', Proceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC, pp. 121-124.
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An investigation of the natural convection boundary layer adjacent to an inclined semi-infinite plate subject to a temperature boundary condition which follows a ramp function up until some specified time and then remains constant is reported. The development of the flow from start-up to a steadystate has been described based on scaling analyses and verified by numerical simulations. Attention in this study has been given to fluids having a Prandtl number Pr less than unity. The boundary layer flow depends on the comparison of the time at which the ramp heating is completed and the time at which the boundary layer completes its growth. If the ramp time is long compared with the steady state time, the layer reaches a quasi steady mode in which the growth of the layer is governed solely by the thermal balance between convection and conduction. On the other hand, if the ramp is completed before the layer becomes steady; the subsequent growth is governed by the balance between buoyancy and inertia, as for the case of instantaneous heating.
Saha, SC, Lei, C & Patterson, JC 1970, 'Scaling analysis of the thermal boundary layer adjacent to an abruptly heated inclined flat plate', Proceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC, pp. 117-120.
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The natural convection thermal boundary layer adjacent to an abruptly heated inclined flat plate is investigated through a scaling analysis and verified by numerical simulations. In general, the development of the thermal flow can be characterized by three distinct stages, i.e. a start-up stage, a transitional stage and a steady state stage. Major scales including the flow velocity, flow development time, and the thermal and viscous boundary layer thicknesses are established to quantify the flow development at different stages and over a wide range of flow parameters. Details of the scaling analysis and the numerical procedures are described in this paper.
Sahel, Z, Bouchachia, A, Gabrys, B & Rogers, P 1970, 'Adaptive Mechanisms for Classification Problems with Drifting Data', KNOWLEDGE-BASED INTELLIGENT INFORMATION AND ENGINEERING SYSTEMS: KES 2007 - WIRN 2007, PT II, PROCEEDINGS, 11th International Conference on Knowledge-Based Intelligent Informational and Engineering Systems/17th Italian Workshop on Neural Networks, Springer Berlin Heidelberg, Vietri sul Mare, ITALY, pp. 419-426.
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Sakhaee, E & Jamalipour, A 1970, 'A New Stable Clustering Scheme for Pseudo-Linear Highly Mobile Ad Hoc Networks', IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference, IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference, IEEE.
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Sakhaee, E, Taleb, T, Jamalipour, A, Kato, N & Nemoto, Y 1970, 'A Novel Scheme to Reduce Control Overhead and Increase Link Duration in Highly Mobile Ad Hoc Networks', 2007 IEEE Wireless Communications and Networking Conference, 2007 IEEE Wireless Communications and Networking Conference, IEEE.
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Samaraweera, DN & Lu, DD-C 1970, 'Novel Implementation of Average Current Mode Controlled Power-Factor-Correction Converters', 2007 2nd IEEE Conference on Industrial Electronics and Applications, 2007 2nd IEEE Conference on Industrial Electronics and Applications, IEEE, Harbin, PEOPLES R CHINA, pp. 1468-1472.
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Samuels, S & Parnell, J 1970, 'A recent investigation into the influences of some Australian asphalt pavement surfaces on road traffic noise', 14th International Congress on Sound and Vibration 2007, ICSV 2007, pp. 9-16.
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This paper deals with an investigation into the influences of some Australian asphalt pavement surfaces on the generation of road traffic noise. The investigation represents a recent component of an ongoing pavement surface noise research program in which both authors have been involved over several years. It focused on the roadside noise produced by a passenger vehicle travelling under controlled conditions on a set of asphaltic pavement surfaces that are typical of those adopted in the states of New South Wales and Queensland and, indeed, elsewhere throughout Australia. Results of the investigation, which are summarised in the paper, demonstrated that there is a considerable degree of variability in the acoustic attributes of the pavement surfaces studied. Interpretations and explanations of this variability are offered in the paper. Moreover, the outcomes of the investigation were compared with the acoustic attributes of sets of nominally similar and different pavement surfaces constructed in other countries and which had been previously reported in the open literature. Explanations for the similarities and differences between the acoustic attributes of the Australian and overseas asphalt pavement surfaces are also offered in the paper.
Sangvikar, N, Hagare, P & Ngo, H 1970, 'Fibre Cement Industrial Water Recovery: A viable Alternative Water Source', Proceedings of International Conference on Cleaner Technologies and Environmental Management, International Conference on Cleaner Technologies and Environmental Management, Allied Publishers Pvt. Ltd., India, pp. 1-7.
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Australian water demands are increasing significantly with the increase of urbanization and industrialization. Thus, water is a valuable resource in Australia, but in short supply. There is a scope to make better use ofrecycled water as an additional water resource. Water reclamation is the best sustainable solution for water crisis. The recirculation of wastewater to reusable water can be achieved by implementing specific wastewater treatment technologies/or wastewater recycling for non-potable purposes.
Seethamraju, R & Marjanovic, O 1970, 'The role of process knowledge in a business process improvement methodology', Proceedings of the International Conference on Electronic Business (ICEB), pp. 397-404.
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The newly established holistic approach to BPM (Business Process Management) has led to increased recognition of the knowledge and experience people develop, use and share while modelling, executing and improving their business processes. However, this knowledge perspective is often neglected by the current BP improvement methodologies. Our empirical research confirms that business process improvement is, in fact, a complex, knowledge-intensive, collaborative process that consists of a set of coordinated, contextualised knowledge management processes. This paper describes the results of our on-going research project that, among other things, aims to investigate the role of individual and collective process knowledge developed and used in a business process improvement methodology deployed in a real-life, complex organization.
Sehestedt, S, Kodagoda, S, Alempijevic, A, Dissanayake, G & IEEE 1970, 'Robust lane detection in urban environments', 2007 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS, VOLS 1-9, IEEE/RSJ International Conference on Intelligent Robots and Systems, IEEE, USA, pp. 123-128.
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Most of the lane marking detection algorithms reported in the literature are suitable for highway scenarios. This paper presents a novel clustered particle filter based approach to lane detection, which is suitable for urban streets in normal traffic conditions. Furthermore, a quality measure for the detection is calculated as a measure of reliability. The core of this approach is the usage of weak models, i.e. the avoidance of strong assumptions about the road geometry. Experiments were carried out in Sydney urban areas with a vehicle mounted laser range scanner and a ccd camera. Through experimentations, we have shown that a clustered particle filter can be used to efficiently extract lane markings. ©2007 IEEE.
Sehestedt, SA, Kodagoda, S, Alempijevic, A & Dissanayake, G 1970, 'Efficient Lane Detection and Tracking in Urban Environments', third European Conference on Mobile Robots, European Conference on Mobile Robots, ECMR, Germany, pp. 78-83.
Sejvar, JJ, Hossain, J, Fischer, M, Gurley, E, Saha, SK & Luby, SP 1970, 'Long-term outcomes of Japanese encephalitis in Bangladesh', AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE, 56th Annual Meeting of the American-Society-of-Tropical-Medicine-and-Hygiene, AMER SOC TROP MED & HYGIENE, Philadelphia, PA, pp. 298-298.
Sheng, D 1970, 'Finite element modelling of penetration problems in geomechanics', Proceedings of the 10th International Symposium on Numerical Models in Geomechanics NUMOG 10 - Numerical Models in Geomechanics NUMOG 10, 10th International Symposium on Numerical Models in Geomechanics (NUMOG X), TAYLOR & FRANCIS LTD, Rhodes, GREECE, pp. 239-245.
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Penetration problems in geomechanics involve the insertion of solid bodies into the ground. The solid body can be a displacement pile used to support a structural load or a testing device used to measure soil properties. Such problems are extremely difficult to model, because they usually involve severe mesh distortion caused by large deformation and frictional contact. In this paper, an Arbitrary Lagrangian-Eulerian method is proposed to overcome the mesh distortion problem. The ALE method, incorporated with an automatic load stepping scheme and a smooth contact discretisation technique, is then used to analyse the penetration of axial displacement piles into the ground. © 2007 Taylor & Francis Group.
Sheng, D 1970, 'Frictional Contact for Pile Installation', IUTAM SYMPOSIUM ON COMPUTATIONAL METHODS IN CONTACT MECHANICS, IUTAM Symposium on Computational Methods in Contact Mechanics, Springer Netherlands, Hannover, GERMANY, pp. 239-255.
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Shi, Y, Ruiz, N, Taib, R, Choi, E & Chen, F 1970, 'Galvanic skin response (GSR) as an index of cognitive load', CHI '07 Extended Abstracts on Human Factors in Computing Systems, CHI07: CHI Conference on Human Factors in Computing Systems, ACM, pp. 2651-2656.
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Multimodal user interfaces (MMUI) allow users to control computers using speech and gesture, and have the potential to minimise users. experienced cognitive load, especially when performing complex tasks. In this paper, we describe our attempt to use a physiological measure, namely Galvanic Skin Response (GSR), to objectively evaluate users. stress and arousal levels while using unimodal and multimodal versions of the same interface. Preliminary results show that users. GSR readings significantly increase when task cognitive load level increases. Moreover, users. GSR readings are found to be lower when using a multimodal interface, instead of a unimodal interface. Cross-examination of GSR data with multimodal data annotation showed promising results in explaining the peaks in the GSR data, which are found to correlate with sub-task user events. This interesting result verifies that GSR can be used to serve as an objective indicator of user cognitive load level in real time, with a very fine granularity.
Shi, Y, Taib, R, Ruiz, N, Choi, E & Chen, F 1970, 'MULTIMODAL HUMAN-MACHINE INTERFACE AND USER COGNITIVE LOAD MEASUREMENT', IFAC Proceedings Volumes, Elsevier BV, pp. 200-205.
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Multimodal user interface (MMUI) is an emerging technology that aims at providing a more intuitive and natural way for people to operate and control a computer or a machine. MMUI allows users to control a computer using various input modalities, including speech, touch, gestures and hand-writing. It has potential to minimise user's cognitive load when performing complex tasks. In this paper we present our work in building an MMUI research platform for intelligent transport system applications, and our attempt to evaluate a user's cognitive load based on analysis of his or her multimodal behaviours and physiological measurement. Copyright © 2007 IFAC.
Sidhu, AS, Hussain, FK, Dillon, TS, Chang, E & IEEE 1970, 'Trust based decision making approach for protein ontology', ETFA 2007: 12TH IEEE INTERNATIONAL CONFERENCE ON EMERGING TECHNOLOGIES AND FACTORY AUTOMATION, VOLS 1-3, IEEE International Conference on Emerging Technologies and Factory Automation, IEEE, Patras, GREECE, pp. 810-813.
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Biomedical Knowledge of Proteomics Domain is represented in the Protein Ontology, whose instantiations, which are undergoing evolution, need a good management and maintenance system. Protein Ontology instantiations signify information about proteins that
Sijun Lu, Jian Zhang & David Feng 1970, 'An efficient method for detecting ghost and left objects in surveillance video', 2007 IEEE Conference on Advanced Video and Signal Based Surveillance, 2007 IEEE Conference on Advanced Video and Signal Based Surveillance, AVSS 2007, IEEE, London, pp. 540-545.
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This paper proposes an efficient method for detecting ghost and left objects in surveillance video, which, if not identified, may lead to errors or wasted computation in background modeling and object tracking in surveillance systems. This method contain
Singh, SPN & Waldron, KJ 1970, 'A Hybrid Motion Model for Aiding State Estimation in Dynamic Quadrupedal Locomotion', Proceedings 2007 IEEE International Conference on Robotics and Automation, 2007 IEEE International Conference on Robotics and Automation, IEEE, Rome, ITALY, pp. 4337-+.
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Skinner, BT, Nguyen, HT & Liu, DK 1970, 'Classification of EEG Signals Using a Genetic-Based Machine Learning Classifier', 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, IEEE, Lyon, France, pp. 3120-3123.
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This paper investigates the efficacy of the genetic-based learning classifier system XCS, for the classification of noisy, artefact-inclusive human electroencephalogram (EEG) signals represented using large condition strings (108bits). EEG signals from three participants were recorded while they performed four mental tasks designed to elicit hemispheric responses. Autoregressive (AR) models and Fast Fourier Transform (FFT) methods were used to form feature vectors with which mental tasks can be discriminated. XCS achieved a maximum classification accuracy of 99.3% and a best average of 88.9%. The relative classification performance of XCS was then compared against four non-evolutionary classifier systems originating from different learning techniques. The experimental results will be used as part of our larger research effort investigating the feasibility of using EEG signals as an interface to allow paralysed persons to control a powered wheelchair or other devices. © 2007 IEEE.
Skinner, BT, Nguyen, HT & Liu, DK 1970, 'Distributed classifier migration in xcs for classification of electroencephalographic signals', 2007 IEEE Congress on Evolutionary Computation, 2007 IEEE Congress on Evolutionary Computation, IEEE, Singapore, pp. 2829-2836.
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This paper presents an investigation into combining migration strategies inspired by multi-deme Parallel Genetic Algorithms with the XCS Learning Classifier System to provide parallel and distributed classifier migration. Migrations occur between distributed XCS classifier sub-populations using classifiers ranked according to numerosity, fitness or randomly selected. The influence of the degree-of-connectivity introduced by Fully-Connected, Bi-directional Ring and Uni-directional Ring topologies is examined. Results indicate that classifier migration is an effective method for improving classification accuracy, improving learning speed and reducing final classifier population size, in the single-step classification of noisy, artefact-inclusive human electroencephalographic signals. The experimental results will be used as part of our larger research effort investigating the feasibility of using EEG signals as an interface to allow paralysed persons to control a powered wheelchair or other devices. © 2007 IEEE.
Skinner, BT, Nguyen, HT & Liu, DK 1970, 'Hybrid Optimisation Method Using PGA and SQP Algorithm', 2007 IEEE Symposium on Foundations of Computational Intelligence, 2007 IEEE Symposium on Foundations of Computational Intelligence, IEEE, Honolulu, Hawaii, USA, pp. 73-80.
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This paper investigates the hybridisation of two very different optimisation methods, namely the Parallel Genetic Algorithm (PGA) and Sequential Quadratic Programming (SQP) Algorithm. The different characteristics of genetic-based and traditional quadratic programming-based methods are discussed and to what extent the hybrid method can benefit the solving of optimisation problems with nonlinear complex objective and constraint functions. Experiments show the hybrid method effectively combines the robust and global search property of Parallel Genetic Algorithms with the high convergence velocity of the Sequential Quadratic Programming Algorithm, thereby reducing computation time, maintaining robustness and increasing solution quality. © 2007 IEEE.
Stacey, M, McGregor, C & Tracy, M 1970, 'An architecture for multi-dimensional temporal abstraction and its application to support neonatal intensive care', 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, IEEE, Lyon, FRANCE, pp. 3752-3756.
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Steele, RJ, Secombe, C & Brookes, WC 1970, 'Using Wireless Sensor Networks for Aged Care: The Patient's Perspective', Pervasive Health Conference and Workshops, 2006, International Conference on Pervasive Computing Technologies for Healthcare, IEEE Computer Society Press, Innsbruck, Austria, pp. 1-10.
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This paper presents the findings of a qualitative study on the perceptions and thoughts of elderly people on the use of current sensor network technology for assisted aged care. Focus groups of elderly people were presented with examples of current sensor nodes and example scenarios of their use, and then invited to provide input on a range of issues surrounding the design and use of the technology. The focus group findings were verified with a health care professional as a control measure. This study examines sensing based interaction, implementation methodologies and user acceptance issues specifically for the elderly, and from the elderly's perspective. A significant finding of the study is that the two most important factors for elderly acceptance of sensor technology are cost and control
Stewart, MG & Netherton, MD 1970, 'Security risks and cost-effectiveness of risk mitigation strategies for the protection of buildings against terrorist threats', Applications of Statistics and Probability in Civil Engineering - Proceedings of the 10th International Conference on Applications of Statistics and Probability, ICASP10, pp. 111-112.
Su, SW, Huang, S, Wang, L, Celler, BG, Savkin, AV, Guo, Y, Cheng, T & IEEE 1970, 'Nonparametric Hammerstein model based model predictive control for heart rate regulation', 2007 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-16, IEEE Engineering in Medicine and Biology Society Annual Conference, Medicine and Biology Society, Lyon, France, pp. 2984-2987.
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This paper proposed a novel nonparametric model based model predictive control approach for the regulation of heart rate during treadmill exercise. As the model structure of human cardiovascular system is often hard to determine, nonparametric modelling is a more realistic manner to describe complex behaviours of cardiovascular system. This paper presents a new nonparametric Hammerstein model identification approach for heart rate response modelling. Based on the pseudo-random binary sequence experiment data, we decouple the identification of linear dynamic part and input nonlinearity of the Hammerstein system. Correlation analysis is applied to acquire step response of linear dynamic component. Support Vector Regression is adopted to obtain a nonparametric description of the inverse of input static nonlinearity that is utilized to form an approximate linear model of the Hammerstein system. Based on the established model, a model predictive controller under predefined speed and acceleration constraints is designed to achieve safer treadmill exercise. Simulation results show that the proposed control algorithm can achieve optimal heart rate tracking performance under predefined constraints.
Su, SW, Nguyen, J, Jarman, R, Huang, S, Chen, W, Celler, BG, Bao, J, Lee, P & Weng, K 1970, 'A new decentralized fault tolerant control strategy and the fault accommodation of coupled drives', Proceedings of the 8th International Conference on Intelligent Technologies (InTech'07), International Conference on Intelligent Technologies, University of Technology, Sydney, Sydney, Australia, pp. 313-317.
Sugawara, T, Yoshizawa, S & Miyanaga, Y 1970, 'Dynamic Reconfigurable Architecture for a Low-Power Despreader in VSF-OFCDM Systems', 2007 IEEE International Symposium on Circuits and Systems (ISCAS), 2007 IEEE International Symposium on Circuits and Systems (ISCAS), IEEE, New Orleans, LA, pp. 2287-+.
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Sun, DA, Huang, WX, Sheng, DC & Yamamoto, H 1970, 'An Elastoplastic Model for Granular Materials Exhibiting Particle Crushing', Key Engineering Materials, 8th Asia-Pacific Symposium on Engineering Plasticity and Its Applications (AEPA 2006), Trans Tech Publications, Ltd., Nagoya Univ, Nagoya, JAPAN, pp. 1273-1278.
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A practical elastoplastic constitutive model for granular materials is presented. And themodel is suitable for description of the material behaviour for a wide range of stresses, including thosesufficient to cause particle crushing. With a limited number of model parameters, the model canpredict the confining-pressure dependent stress-strain relation and shear strength of granular materialsin three-dimensional stresses, especially of variation of shear strength and dilatancy characteristicsdue to particle crushing under high confining pressure. The model parameters, which have clearphysical meanings, can be determined from the results of isotropic compression test and conventionaltriaxial compression tests. The model performance is demonstrated for triaxial compression tests of asand for a wide range of the confining-pressure from 0.2MPa to 8.0MPa.
Sun, Y, Chen, F, Shi, Y & Chung, V 1970, 'An input-parsing algorithm supporting integration of deictic gesture in natural language interface', Human-Computer Interaction, Pt 3, Proceedings, 12th International Conference on Human-Computer Interaction (HCI International 2007), SPRINGER-VERLAG BERLIN, Beijing, PEOPLES R CHINA, pp. 206-215.
Sun, Y, Feng, B, Zhang, Y, Fang, G, Shi, J & Dutkiewicz, E 1970, 'Fast RSVP: A Cross Layer Resource Reservation Scheme for Mobile IPv6 Networks', 2007 IEEE Symposium on Computers and Communications, 2007 IEEE Symposium on Computers and Communications, IEEE, pp. 691-697.
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This paper proposes a new cross layer scheme (Fast RSVP) to reserve resources in mobile IPv6 networks. Through the cooperation of mobile IP and RSVP modules, Fast RSVP includes a number of mechanisms such as advanced resource reservation on neighbor tunnels, resource reservation on optimized routes, resource reservation for handover sessions, path merge etc. Network simulation results show that our scheme, compared with other traditional ways to reserve resources in mobile environments, has the following advantages: (1) it allows a mobile node to realize fast handover with QoS guarantees; (2) it avoids resource wasting caused by triangular routes and duplicate reservations; (3) it distinguishes different types of reservation requests, greatly reducing the handover session forced termination rate while maintaining high performance of the network. © 2007 IEEE.
Sun, Y, Shi, Y, Chen, F & Chung, V 1970, 'An efficient Multimodal language processor for parallel input strings in multimodal input fusion', ICSC 2007: International Conference on Semantic Computing, Proceedings, International Conference on Semantic Computing (ICSC 2007), IEEE COMPUTER SOC, Irvine, CA, pp. 389-396.
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Sun, Y, Shi, Y, Chen, F & Chung, V 1970, 'An efficient unification-based multimodal language processor in multimodal input fusion', Proceedings of the 19th Australasian conference on Computer-Human Interaction: Entertaining User Interfaces, OZCHI '07: Proceedings of the 19th conference of the computer-human interaction special interest group of Australia on Computer-human interaction: design, ACM, pp. 215-218.
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A Multimodal User Interface (MMUI) allows a user to interact with a computer in a way similar to human-to-human communication, for example, through speech and gesture. Being an essential component in MMUIs, Multimodal Input Fusion should be able to find the semantic interpretation of a user's intention from recognized multimodal symbols which are semantically complementary. We enhanced our efficient unification-based multimodal parsing processor, which has the potential to achieve low polynomial computational complexity while parsing versatile multimodal inputs within a speech and gesture based MMUI, to handle multimodal inputs from more than two modalities. Its ability to disambiguate speech recognition results with gesture recognition results was verified with an experiment. The analysis of experiment results demonstrates that the improvement is significant after applying this technique.
Sun, Y, Zhang, Y, Song, Y, Shi, J & Dutkiewicz, E 1970, 'Extensions to Resource Reservation Protocol (RSVP) with Guard Channel for Mobile IPv6', 2007 IEEE 66th Vehicular Technology Conference, 2007 IEEE 66th Vehicular Technology Conference, IEEE, Baltimore, MD, pp. 1528-1532.
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Sutcliffe, PJ, Solomon, AI & Edwards, J 1970, 'Finding the Population variance of Costs over the Solution Space of the TSP in Polynomial Time', Proceedings of the 11th WSEAS International Conference on APPLIED MATHEMATICS, WSEAS International Conference on Applied Mathematics, WSEAS Conference Proceedings, Dallas, Texas, pp. 23-28.
Taha, T, Miro, JV & Dissanayake, G 1970, 'Wheelchair driver assistance and intention prediction using POMDPs', PROCEEDINGS OF THE 2007 INTERNATIONAL CONFERENCE ON INTELLIGENT SENSORS, SENSOR NETWORKS AND INFORMATION PROCESSING, International Conference on Intelligent Sensors, Sensor Networks and Information Processing, IEEE Computer Society, Melbourne, Victoria, pp. 449-454.
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Electric wheelchairs give otherwise immobile people the free-dom of movement, they significantly increase independence and dramatically increase quality of life. However the physical control systems of such wheelchair can be prohibitive for some users; for example, people with severe tremors. Several assisted wheelchair platforms have been developed in the past to assist such users. Algorithms that assist specific behaviors such as door - passing, follow - corridor, or avoid - obstacles have been successful. Recent research has seen a move towards systems that predict the users intentions, based on the users input. These predictions have been typically limited to locations immediately surrounding the wheelchair. This paper presents a new assisted wheelchair driving system with large scale intelligent intention recognition based on POMDPs (Partially Observable Markov Decision Processes). The systems acts as an intelligent agent/decision-maker, it relies on minimal user input; to predict the users intention and then autonomously drives the user to his destination. The prediction is constantly being updated as new user input is received allowing for true user/system integration. This shifts the users focus from fine motor-skilled control to coarse control intended to convey intention. © 2007 IEEE.
Tan, J, lu, HHC, Ling, SH & IEEE 1970, 'Symbolic representation of border collision bifurcation in switching DC/DC converters', IECON 2007: 33RD ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY, VOLS 1-3, CONFERENCE PROCEEDINGS, 33rd Annual Conference of the IEEE-Industrial-Electronics-Society, IEEE, Taipei, TAIWAN, pp. 2010-2014.
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Tan, KC, Goh, CK, Teoh, EJ & Liu, D 1970, 'A hybrid evolutionary approach for heterogeneous multiprocessor scheduling', Proceedings of the 8th International Conference on Intelligent Technologies (InTech), International Conference on Intelligent Technologies, University of Technology, Sdyney, Sydney, Australia, pp. 261-268.
Thomas-Kerr, J, Burnett, I & Ritz, C 1970, 'Intelligent Multimedia Delivery? It’s a question of semantics', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, Sydney, AUSTRALIA, pp. 473-478.
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Thomas-Kerr, J, Janneck, J, Mattavelli, M, Burnett, I & Ritz, C 1970, 'Reconfigurable Media Coding: Self-Describing Multimedia Bitstreams', 2007 IEEE Workshop on Signal Processing Systems, 2007 IEEE Workshop on Signal Processing Systems, IEEE, Shanghai, PEOPLES R CHINA, pp. 319-+.
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Tian, L, Yang, Y, Shi, J, Dutkiewicz, E & Fang, G 1970, 'Energy Efficient Integrated Scheduling of Unicast and Multicast Traffic in 802.16e WMANs', IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference, IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference, IEEE, Washington, DC, pp. 3478-+.
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Tien, D & Jia, W 1970, 'Automatic road extraction from aerial images: A contemporary survey', Fourth International Conference on Information Technology and Applications, ICITA 2007, International Conference on Information Technology and Applications, Macquarie Scientific Publishing, Sydney, Australia, Harbin, China, pp. 294-299.
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Wenjing Jia is currently a part-time Research Associate at the Charles Sturt University, Australia This paper describes a contemporary literature review outcomes on automatic road extraction from aerial images. The main focus is on automatic road extraction, but it also discusses the possible extension on automatic extraction of other man-made objects, such as buildings, dams, swimming pools, etc.. This paper first discusses the background of the topic, including the difficulties of the problem and the evaluation methods. Then Ave typical method currently proposed for road extraction are reviewed. Technical details are critically reviewed for future reference and comparison. The advantages and disadvantages of each approach are discussed. Based on this discussion, future work and possible methods are suggested.
Tijing, LD, Pak, BC, Baek, BJ, Lee, DH & Cho, YI 1970, 'USING LOW-VOLTAGE-HIGH-FREQUENCY ELECTRIC FIELD TO MITIGATE MINERAL FOULING IN A HEAT EXCHANGER', 대한기계학회 춘추학술대회, pp. 1683-1688.
Tipper, JL, Galvin, AL, Ingham, E & Fisher, J 1970, 'Estimation of the osteolytic potential of noncrosslinked and crosslinked polyethylenes and ceramic-on-ceramic total hip prostheses', ASTM Special Technical Publication, pp. 75-90.
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There is currently considerable interest in the wear debris and osteolytic potential of different types of bearings used in total joint replacements. The aim of this study was first to characterize the wear and wear particles generated from two different grades of UHMWPE acetabular cups with different levels of crosslinking in a hip joint simulator. Secondly, the results for the polyethylenes were compared to an alumina ceramic-on-ceramic hip prosthesis. The wear rates of the two noncrosslinked material types were very similar at 49±8 mm3 per million cycles for the GUR 1020 and 45.6± 1.4 mm3 per million cycles for the GUR 1050. Moderate crosslinking (4 MRad) significantly (P<0.05) reduced the wear rate of the GUR 1020 material by 30 % to 35±9 mm3 per million cycles. High levels of crosslinking of GUR 1050 (10 MRad) produced a highly significant (P<0.01) 80 % reduction in wear volume. Although reduced wear volumes were observed with moderate levels of crosslinking for the 4 MRad GUR 1020 material, little benefit was conveyed by crosslinking, in terms of predicted overall biocompatibility and estimated osteolytic potential. Introducing high levels of crosslinking (10 MRad) into the GUR 1050 material reduced wear and osteolytic potential by up to five-fold compared to the other GUR 1050 materials. However, compared to the non-crosslinked and moderately crosslinked GUR 1020 materials, the highly crosslinked GUR 1050 UHMWPE had only a two-fold lower osteolytic potential. The alumina ceramic-on-ceramic hip prostheses produced extremely low wear rates under both standard and microseparation simulation conditions, and consequently the osteolytic potential of the alumina bearings was estimated to be >20-fold lower than the highly crosslinked polyethylene. Copyright © 2006 by ASTM International.
Tran, LC, Mertins, A, Dutkiewicz, E & Huang, X 1970, 'Space-Time-Frequency Codes in MB-OFDM UWB communications: advanced order-8 STFC and its performance', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, Sydney, AUSTRALIA, pp. 380-+.
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Tran, N, Beydoun, G & Low, G 1970, 'Design of a peer-to-peer information sharing MAS using MOBMAS (Ontology-Centric agent oriented methodology)', ADVANCES IN INFORMATION SYSTEMS DEVELOPMENT, VOL 2, 15th International Conference on Information Systems Development, SPRINGER, Budapest, HUNGARY, pp. 63-76.
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Tran, N, Henderson-Sellers, B & Hawryszkiewycz, I 1970, 'Method fragments to support collaborative teamwork for software development projects', Proceedings of the European and Mediterranean Conference on Information Systems, EMCIS 2007, pp. 491-499.
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Collaborative work, and especially CSCW, requires methodological support. One methodological approach is that of situational method engineering (SME). In the SME context, support for CSCW teams and teamwork has been identified as being deficient. Using a repository of method fragments constructed from a standard metamodel, we analyze the gaps and propose new method fragments that will allow a methodology focussed upon CSCW to be effectively constructed from the fragment repository.
Tran, NN, Tuan, HD & Nguyen, HH 1970, 'Optimal Training Signals and Detection for OFDM Under Colored Noise', 2007 IEEE 66th Vehicular Technology Conference, 2007 IEEE 66th Vehicular Technology Conference, IEEE, Baltimore, MD, pp. 1327-1331.
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Based on convex programming, this paper presents the optimal training signal design for orthogonal frequency-division multiplexing (OFDM) under colored noise. An effective method for OFDM symbol detection with the use of precoding is also described. Both
Tran, NN, Tuan, HD & Nguyen, HH 1970, 'Orthogonal affine precoder design for jointly optimal channel estimation and symbol detection in MIMO-OFDM systems', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, Sydney, Australia, pp. 983-988.
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Affine precoding superimposes training signals on linearly precoded data. It enhances symbol recovery and effectively identifies the frequency-selective fading channel. Previous works have shown its advantage over the standard timemultiplexed training. T
Tran, TH, Kwok, NM, Scheding, S & Ha, QP 1970, 'Dynamic Modelling of Wheel-Terrain Interaction of a UGV', 2007 IEEE International Conference on Automation Science and Engineering, 2007 IEEE International Conference on Automation Science and Engineering, IEEE, Scottsdale, Arizona, U.S.A., pp. 369-374.
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Understanding the vehicle-terrain interaction is essential for autonomous and safe operations of skid-steering unmanned ground vehicles (UGVs). This paper presents a comprehensive analysis of the dynamic processes involved in this interaction, using the vehicle kinetics and the theory of terramechanics to derive systematically shear displacement, reaction force, and load distribution for a wheel. The new model is then summarized in the form of an algorithm to allow for computation of characteristic performance of the interaction such as slip ratios, rolling resistance, and moment of turning resistance for a number of terrain types. Given the current state of the vehicle and terrain parameters, the model can be used to estimate its next states and to predict the vehicle running path. The development is illustrated by simulation and verified with experimental data.
Tran, Y, Thuraisingham, RA, Boord, P, Nguyen, HT & Craig, A 1970, 'Using fractal analysis to improve switching rates in 'hands free' environmental control technology for the severely disabled', 2007 3rd International IEEE/EMBS Conference on Neural Engineering, 2007 3rd International IEEE/EMBS Conference on Neural Engineering, IEEE, Kohala, Hawaii, USA, pp. 406-409.
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A negative impact on the quality of life of the severely neurologically disordered such as spinal cord injured persons is the loss of the ability to control devices in their immediate environment. Consequently, we have conducted research on technology designed to restore some measure of independence by providing hands free control over these devices by using EEG signals associated with eye closure (EC) and eye opening (EO). In a previous study we demonstrated that the nonlinear technique fractal dimension analysis was a viable alternative to spectral analysis in detecting these signals in the EEG of able bodied persons. This paper explores the efficacy of using fractal dimension to detect EC/EO signals in a spinal cord injured population. The fractal dimension method was found to improve from the standard spectral analysis technique in that there was a significant reduction is the occurrence of false positive and false negative switching. This improved detection of EC/EO in the brain activity of severely disabled people will be utilised in our technology for remote switching of electrical devices. © 2007 IEEE.
Tran, Y, Thuraisingham, RA, Wijesuriya, N, Nguyen, HT & Craig, A 1970, 'Detecting neural changes during stress and fatigue effectively: a comparison of spectral analysis and sample entropy', 2007 3rd International IEEE/EMBS Conference on Neural Engineering, 2007 3rd International IEEE/EMBS Conference on Neural Engineering, IEEE, Kohala Coast, Hawaii, USA, pp. 350-353.
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Brain computer interface (BCI) technology as Its name implies, relies upon decoding brain signals into operational commands. Aside from needing effective means of control, successful BCIs need to remain stable in varying physiological conditions. BCIs need to be developed with mechanisms to recognise and respond to physiological states (such as stress and fatigue) that can disrupt user capability. This paper compares a spectral analysis of EEG signals technique with a nonlinear method of sample entropy to detect changes In brain dynamics during moments of stress and fatigue. The results demonstrated few changes In the spectral frequency bands of the EEG during fatigue and stress conditions. However, when the EEG signals were analysed with the nonlinear technique of sample entropy the results indicated a reduction of complexity during moments of fatigue and stress and an increase In complexity during moments of engagement to the task. © 2007 IEEE.
Travaly, Y, Mandeep, B, Carbonell, L, Tokei, Z, Van Olmen, J, Iacopi, F, Van Hove, M, Stucchi, M & Maex, K 1970, 'On a more accurate assessment of scaled copper/low-k interconnects performance', IEEE TRANSACTIONS ON SEMICONDUCTOR MANUFACTURING, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, pp. 333-340.
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Trieu, HT, Nguyen, HT & Willey, K 1970, 'Obstacle avoidance for power wheelchair using Bayesian neural network', Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, pp. 4771-4774.
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In this paper we present a real-time obstacle avoidance algorithm using a Bayesian neural network for a laser based wheelchair system. The raw laser data is modified to accommodate the wheelchair dimensions, allowing the freespace to be determined accurately in real-time. Data acquisition is performed to collect the patterns required for training the neural network. A Bayesian frame work is applied to determine the optimal neural network structure for the training data. This neural network is trained under the supervision of the Bayesian rule and the obstacle avoidance task is then implemented for the wheelchair system. Initial results suggest this approach provides an effective solution for autonomous tasks, suggesting Bayesian neural networks may be useful for wider assistive technology applications. © 2007 IEEE.
Trieu, HT, Nguyen, HT, Willey, K & IEEE 1970, 'Obstacle avoidance for power wheelchair using Bayesian neural network', 2007 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-16, IEEE Engineering in Medicine and Biology Society Annual Conference, IEEE, Lyon, France, pp. 4771-4774.
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In this paper we present a real-time obstacle avoidance algorithm using a Bayesian neural network for a laser based wheelchair system. The raw laser data is modified to accommodate the wheelchair dimensions, allowing the free-space to be determined accurately in real-time. Data acquisition is performed to collect the patterns required for training the neural network. A Bayesian frame work is applied to determine the optimal neural network structure for the training data. This neural network is trained under the supervision of the Bayesian rule and the obstacle avoidance task is then implemented for the wheelchair system. Initial results suggest this approach provides an effective solution for autonomous tasks, suggesting Bayesian neural networks may be useful for wider assistive technology applications.
Tsang, IW & Kwok, JT 1970, 'Ensembles of partially trained SVMs with multiplicative updates', IJCAI International Joint Conference on Artificial Intelligence, 20th International Joint Conference on Artificial Intelligence, IJCAI-INT JOINT CONF ARTIF INTELL, Hyderabad, INDIA, pp. 1089-1094.
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The training of support vector machines (SVM) involves a quadratic programming problem, which is often optimized by a complicated numerical solver. In this paper, we propose a much simpler approach based on multiplicative updates. This idea was first explored in [Cristianini et al., 1999], but its convergence is sensitive to a learning rate that has to be fixed manually. Moreover, the update rule only works for the hard-margin SVM, which is known to have poor performance on noisy data. In this paper, we show that the multiplicative update of SVM can be formulated as a Bregman projection problem, and the learning rate can then be adapted automatically. Moreover, because of the connection between boosting and Bregman distance, we show that this multiplicative update for SVM can be regarded as boosting the (weighted) Parzen window classifiers. Motivated by the success of boosting, we then consider the use of an adaptive ensemble of the partially trained SVMs. Extensive experiments show that the proposed multiplicative update rule with an adaptive learning rate leads to faster and more stable convergence. Moreover, the proposed ensemble has efficient training and comparable or even better accuracy than the best-tuned soft-margin SVM.
Tsang, IW & Kwok, JT 1970, 'Large-scale sparsified manifold regularization', Advances in Neural Information Processing Systems, pp. 1401-1408.
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Semi-supervised learning is more powerful than supervised learning by using both labeled and unlabeled data. In particular, the manifold regularization framework, together with kernel methods, leads to the Laplacian SVM (LapSVM) that has demonstrated state-of-the-art performance. However, the LapSVM solution typically involves kernel expansions of all the labeled and unlabeled examples, and is slow on testing. Moreover, existing semi-supervised learning methods, including the LapSVM, can only handle a small number of unlabeled examples. In this paper, we integrate manifold regularization with the core vector machine, which has been used for large-scale supervised and unsupervised learning. By using a sparsified manifold regularizer and formulating as a center-constrained minimum enclosing ball problem, the proposed method produces sparse solutions with low time and space complexities. Experimental results show that it is much faster than the LapSVM, and can handle a million unlabeled examples on a standard PC; while the LapSVM can only handle several thousand patterns.
Tsang, IW, Kocsor, A & Kwok, JT 1970, 'Simpler core vector machines with enclosing balls', Proceedings of the 24th international conference on Machine learning, ICML '07 & ILP '07: The 24th Annual International Conference on Machine Learning held in conjunction with the 2007 International Conference on Inductive Logic Programming, ACM, pp. 911-918.
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The core vector machine (CVM) is a recent approach for scaling up kernel methods based on the notion of minimum enclosing ball (MEB). Though conceptually simple, an efficient implementation still requires a sophisticated numerical solver. In this paper, we introduce the enclosing ball (EB) problem where the ball's radius is fixed and thus does not have to be minimized. We develop efficient (1 + e)-approximation algorithms that are simple to implement and do not require any numerical solver. For the Gaussian kernel in particular, a suitable choice of this (fixed) radius is easy to determine, and the center obtained from the (1 + e)-approximation of this EB problem is close to the center of the corresponding MEB. Experimental results show that the proposed algorithm has accuracies comparable to the other large-scale SVM implementations, but can handle very large data sets and is even faster than the CVM in general.
Tuan, HD, Nguyen, HH, Tran, NN, Nguyen, V & IEEE 1970, 'An effective global optimization algorithm for wireless MIMO channel estimation', 2007 2ND IEEE INTERNATIONAL WORKSHOP ON COMPUTATIONAL ADVANCES IN MULTI-SENSOR ADAPTIVE PROCESSING, IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, IEEE, St Thomas, VI, pp. 209-212.
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The problem of channel estimation for spatially correlated fading multiple-input multiple-output (MIMO) channels is considered. Based on the channel's second order statistic, the minimum mean-square error (MMSE) channel estimator that works with the supe
Tuan, HD, Pham, DH, Vo, B & Nguyen, TQ 1970, 'Entropy of General Gaussian Distributions and MIMO Channel Capacity Maximizing Precoder and Decoder', 2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07, 2007 IEEE International Conference on Acoustics, Speech, and Signal Processing, IEEE, Honolulu, HI, pp. 325-328.
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Exploiting channel state information at the transmitter and receiver to design an optimal linear precoder and decoder for a multiple-input multiple-output (MIMO) communication system is an active research area. The design is often based on the informatio
Ullmer, B, Schmidt, A, Hornecker, E, Hummels, C, Jacob, RJ & van den Hoven, E 1970, 'Proceedings of the First International Conference on Tangible and Embedded Interaction (TEI'07)', TEI'07, TEI'07, ACM, Baton Rouge, LA, USA.
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It is our great pleasure to present the proceedings of the First International Conference on Tangible and Embedded Interaction. This new conference addresses interaction, design, tools, use, and art, especially encouraging interdisciplinary research spanning these themes.For its inaugural year, TEI'07 is held in concert with the 14th Annual Mardi Gras conference at Louisiana State University in Baton Rouge, Louisiana. Major sponsorship is provided by the LSU Center for Computation and Technology (CCT). The conference is in cooperation with ACM SIGGRAPH, with its proceedings to be archived in ACM's Digital Library.The Mardi Gras festival finds its roots some 5,000 years ago as a celebration of spring. In North America, the festival dates to French explorers' arrival at the mouth of the Mississippi River in 1699. Just south of New Orleans, where the river meets the sea, they named their landfall Point d'Mardi Gras, on occasion of the day.In this spirit of new life, discovery, cultural diversity, and celebration, each spring the Mardi Gras conference embraces a different theme of regional interest and relevance. This year, we have embraced tangible and embedded interaction, with aspirations of giving birth to a recurring annual gathering and celebration of research in this field.
Valls Miro, J, Taha, T, Wang, D, Dissanayake, G & Liu, D 1970, 'An efficient strategy for robot navigation in cluttered environments in the presence of dynamic obstacles', Proceedings of the 8th International Conference on Intelligent Technologies (InTech), International Conference on Intelligent Technologies, University of Technology, Sydney, Sydney, Australia, pp. 74-81.
van den Hoven, E & Mazalek, A 1970, 'Tangible Play: Research and Design for Tangible and Tabletop Games', 2007 INTERNATIONAL CONFERENCE ON INTELLIGENT USER INTERFACES, IUI'07, ACM, Honolulu, HI, USA, pp. 6-6.
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This workshop addresses questions related to the areas of tangible interaction, game design and emerging technologies for tangible and tabletop games. We bring together researchers and practitioners from diverse fields related to these topics, such as HCI, computer science, interaction design and game design. We seek collaborative ways to move forward the field of tangible and tabletop games.
van den Hoven, E, Frens, J, Aliakseyeu, D, Martens, J-B, Overbeeke, K & Peters, P 1970, 'Design research & tangible interaction', Proceedings of the 1st international conference on Tangible and embedded interaction, TEI07: Tangible and Embedded Interaction 2007, ACM, Baton Rouge, USA, pp. 109-116.
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The research on Tangible Interaction (TI) has been inspired by many different disciplines, including psychology, sociology, engineering and human-computer interaction (HCI). Now that the field is getting more mature, in the sense that basic technologies and interaction paradigms have been explored, we observe a growing potential for a more design-oriented research approach. We suggest that there are several arguments for this proposed broadening of the TI-perspective: 1) the need for designing products within contexts-of-use that are much more challenging and diverse than the task-oriented desktop (or tabletop) systems that mostly inspire us today, 2) the interest to also design TI starting from existing physical activities instead of only as add-ons to digital applications, 3) the need for iterative design and evaluation of prototypes in order to develop applications that are grounded within daily practice over prolonged periods of time, and 4) the need to extend ease of use to more hedonic aspects of interaction such as fun and engagement
Vellaisamy, K & Li, J 1970, 'Multidimensional Decision Support Indicator (mDSI) for Time Series Stock Trend Prediction', ADVANCES IN KNOWLEDGE DISCOVERY AND DATA MINING, PROCEEDINGS, 11th Pacific-Asia Conference on Knowledge Discovery and Data Mining, Springer Berlin Heidelberg, Nanjing, PEOPLES R CHINA, pp. 841-848.
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Voinov, A, Cox, WE & Cardwell, HE 1970, 'Pilot Collaborative Modeling Study for Regulatory Issues on the James River', World Environmental and Water Resources Congress 2007, World Environmental and Water Resources Congress 2007, American Society of Civil Engineers.
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Whereas other shared vision planning studies have typically addressed planning issues for reservoir re-operation issues (e.g. Lake Ontario Study, Mississippi Headwaters Reservoir Operations Plan Evaluation Study, ACT-ACF, etc.), there is also a need for the Corps to work with stakeholders to develop a "shared vision" for water management as it performs it's regulatory role under section 404 of the Clean Water Act. Likewise the state of Virginia recognizes the critical role of public involvement in state and local water planning. Therefore, the USEPA, the State of Virginia, and the Corps' Norfolk District regulators are helping guide a pilot Shared Vision Planning in the James River study to identify and describe the water resources management challenges facing growing municipalities in the James basin and to identify strategies for addressing these challenges in support the Corps 404 regulatory role and the State water planning process. A "Pilot" SVP study is proposed to initiate a collaborative process and evaluate the potential for a "full blown" SVP effort. The pilot effort will likely take 3-5 months and will involve several workshops (one or two large workshops plus various meetings of working groups), some model development, limited data gathering and some initial decision-making trials. © 2007 ASCE.
Walker, JP, Balling, J, Bell, M, Berg, A, Berger, M, Biasoni, D, Botha, E, Boulet, G, Chen, Y, Christen, E, DeJeu, R, DeRosnay, P, Dever, C, Draper, C, Fenollar, J, Gomez, C, Grant, JP, Hacker, J, Hafeez, M, Hancock, G, Hansen, D, Holz, L, Hornbuckle, J, Hurkmans, R, Jackson, T, Johanson, J, Jones, P, Jones, S, Kalma, J, Kerr, Y, Kim, E, Kuzmin, V, Lakshmi, V, Lopez, E, Maggioni, V, Maisongrande, P, Martinez, C, McKee, L, Merlin, O, Mladenova, I, O'Neill, P, Panciera, R, Paruscio, V, Pipunic, R, Rawls, W, Rinaldi, M, Rüdiger, C, Saco, P, Saleh, K, Savstrup-Kristensen, S, Shoemark, V, Skou, N, Soebjaerg, S, Summerell, G, Teuling, AJ, Thompson, H, Thyer, M, Toyra, J, Tsang, A, Wells, T, Wursteisen, P & Young, R 1970, 'The national airborne field experiment data sets', MODSIM07 - Land, Water and Environmental Management: Integrated Systems for Sustainability, Proceedings, pp. 2625-2631.
Wan, SH, Kodagoda, S & Sehestedt, SA 1970, 'Multiple Cue Based Vehicle Detection and Tracking for Road Safety', Proceedings of the 8th International Conference on Intelligent Technologies (InTech-07), International Conference on Intelligent Technologies, University of Technology, Sydney, Sydney, Australia, pp. 340-345.
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With the rise in accident related fatalities on roads, the researchers around the world are looking for solutions including integrating intelligence to vehicles. One cruicial aspects of it is the robust detection and tracking of other vehicles in the visinity. In this paper, we have proposed a probabilistic way of incorporation of several visual cues in vehicle detection and a particle filter based tracking strategy. Visual cues used are, lane markings, symmetry, entropy and shadows. Combination of visual cues provided us with robust results when compared with their individual counterparts. The definition of a region of interest lowers the computational requirements with improved robustness. Experimental results of the algorithm in Sydney urban areas are presented
Wang, C, Lu, J & Zhang, G 1970, 'A constrained clustering approach to duplicate detection among relational data', ADVANCES IN KNOWLEDGE DISCOVERY AND DATA MINING, PROCEEDINGS, Pacific-Asia Conference on Knowledge Discovery and Data Mining, Springer Berlin / Heidelberg, Nanjing, China, pp. 308-319.
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This paper proposes an approach to detect duplicates among relational data. Traditional methods for record linkage or duplicate detection work on a set of records which have no explicit relations with each other. These records can be formatted into a single database table for processing. However, there are situations that records from different sources can not be flattened into one table and records within one source have certain (semantic) relations between them. The duplicate detection issue of these relational data records/instances can be dealt with by formatting them into several tables and applying traditional methods to each table. However, as the relations among the original data records are ignored, this approach generates poor or inconsistent results. This paper analyzes the characteristics of relational data and proposes a particular clustering approach to perform duplicate detection. This approach incorporates constraint rules derived from the characteristics of relational data and therefore yields better and more consistent results, which are revealed by our experiments.
Wang, C, Lu, J, Zhang, G & Zeng, X 1970, 'Creating and managing ontology data on the web: A semantic wiki approach', WEB INFORMATION SYSTEMS ENGINEERING - WISE 2007, PROCEEDINGS, International Conference on Web Information Systems Engineering, Springer, Nancy, France, pp. 513-522.
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The creation of ontology data on web sites and proper management of them would help the growth of the semantic web. This paper proposes a semantic wiki approach to tackle this issue. Desirable functions that a semantic wiki approach should implement to offer a better solution to this issue are discussed. Along with that, some key problems such as usability, data reliability and data quality are identified and analyzed. Based on that, a system framework is presented to show how such functions are designed. These functions are further explained along with the description of our implemented prototype system. By addressing the identified key problems, our semantic wiki approach is expected to be able to create and manage web ontology data more effectively.
Wang, D, Kwok, NM, Liu, DK, Lau, H, Dissanayake, G & IEEE 1970, 'PSO-Tuned F-2 method for multi-robot navigation', 2007 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS, VOLS 1-9, IEEE/RSJ International Conference on Intelligent Robots and Systems, IEEE, San Diego, CA, pp. 3771-3776.
Wang, J 1970, 'Comparison of radiated susceptibility of a digital IC between electric field coupling and magnetic field coupling based on a circuit apparoach', 2007 4TH INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY PROCEEDING: EMC 2007, 4th International Symposium on Electromagnetic Compatibility, IEEE, Qingdao, PEOPLES R CHINA, pp. 19-22.
Wang, JC-P, Abolhasan, M, Franklin, DR, Safaei, F & Lipman, J 1970, 'On Separating Route Control and Data Flows in Multi-radio Multi-hop Ad Hoc Network.', ICON, IEEE International Conference on Networks, IEEE, Adelaide, Australia, pp. 19-24.
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Ad hoc networks typically require a significant amount of routing and control information to be distributed in a timely and reliable manner throughout the network, particularly in dynamic environments. As traffic levels increase and the network becomes more heavily congested, there is an increased probability that these critical packets are lost, resulting in obsolete control information being used to make important decisions. This would further compound the problem of network congestion and lead to a very rapid loss of connectivity and throughput. Given this, we argue the solutions to these problems should not rely on putting extra bandwidth on a radio interface. Instead, we should exploit the use of multiple radios to ensure the route can be firmly established. In this paper, we propose a multi-radio solution which reserves one radio channel exclusively for routing. Our simulation results have demonstrated that using a separate radio for routing protocol would dramatically improve reliability in heavily loaded ad hoc wireless networks, thereby effectively alleviating the impact of network congestion. © 2007 IEEE.
Wang, JC-P, Abolhasan, M, Franklin, DR, Safaei, F, Lipman, J & IEEE 1970, 'On separating route control and data flows in multi-radio multi-hop ad hoc network', 2007 15TH IEEE INTERNATIONAL CONFERENCE ON NETWORKS, 15th IEEE International Conference on Networks, IEEE, Adelaide, AUSTRALIA, pp. 114-119.
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Wang, JC-P, Abolhasan, M, Safaei, F, Franklin, D & IEEE 1970, 'A survey on control separation techniques in multi-radio multi-channel MAC protocols', 2007 INTERNATIONAL SYMPOSIUM ON COMMUNICATIONS AND INFORMATION TECHNOLOGIES, VOLS 1-3, International Symposium on Communications and Information Technologies, IEEE, Sydney, Australia, pp. 854-859.
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The rapid diminishing in the cost of commodity wireless hardware in recent years has prompted the use of multiple radios to improve the capacity of wireless networks. However, the research has shown that the improvement obtained from using multiple radios does not solely depend on the number of radios, but primarily on how these radios can be integrated in a constructive manner. A common way of integration multiple radios is to use a dedicated radio for control. To date, a number of multi-radio MAC protocol are employing a dedicated radio to control and coordinate the other radios, though the approaches are varied from one to another. In this paper, the control separation techniques in the multi-radio multi-channel MAC have been surveyed, and a classification of control separation techniques is provided. Moreover, this study points out the open research issues and intends to spark new interests and developments in this field.
Wang, L, Su, SW, Chan, GSH, Celler, BG & IEEE 1970, 'A mathematical model of the cardiovascular system under exercise', 2007 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-16, IEEE Engineering in Medicine and Biology Society Annual Conference, Medicine and Biology Society, Lyon, France, pp. 1014-1017.
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A mathematical model, based on our previous pulsatile nonlinear multi-element cardiovascular model, was tested and improved to study cardiovascular response under graded exercise levels. Ten healthy subjects were studied using cycle-ergometry exercise test with constant workloads ranging from 25 Watt to 125 Watt. Breath by breath gas exchange, heart rate, cardiac output, stroke volume and blood pressure were measured at each stage. Based on the experimental data, firstly we proved that our previous model is capable to regenerate the cardiovascular variables observed in the subjects under different exercise levels. Secondly, we improved the model by incorporating a robust and efficient function to estimate metabolic demand. Then the new model can estimate both cardiovascular variables and metabolic demand with its simulation results within the range of SD (Standard Deviation, N=10) of the experimental data.
Wang, Y, Zhu, J & Guo, Y 1970, 'Comparative Study of Control Strategies for Permanent Magnet Motors', Proceedings of 2nd International Forum on Systems and Mechatronics, International Forum on Systems and Mechatronics, the organisers of the International Forum on Systems and Mechatronics, Tainan, Taiwan, pp. 439-444.
Wang, Y, Zhu, J & Guo, Y 1970, 'Improved Discrete Space Vector Modulation Scheme for DTC Controlled PMSM', Proceedings of 2nd International Forum on Systems and Mechatronics, International Forum on Systems and Mechatronics, organisers of the International Forum on Systems and Mechatronics, Tainan, Taiwan, pp. 433-438.
Wang, Y, Zhu, JG & Guo, YG 1970, 'A survey of direct torque control schemes for permanent magnet synchronous motor drives', 2007 Australasian Universities Power Engineering Conference, 2007 Australasian Universities Power Engineering Conference (AUPEC), IEEE, Perth, Australia, pp. 229-234.
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Wang, Y, Zhu, JG & Guo, YG 1970, 'A survey of direct torque control schemes for permanent magnet synchronous motor drives', 2007 AUSTRALASIAN UNIVERSITIES POWER ENGINEERING, VOLS 1-2, Australasian Universities Power Engineering Conference (AUPEC), IEEE, Curtin Univ Technol, Perth, AUSTRALIA, pp. 162-166.
Wang, Z, Huang, S & Dissanayake, G 1970, 'D-SLAM: Decoupled localization.and mapping for autonomous robots', Robotics Research, International Symposium on Robotics Research, Springer, San Francisco, USA, pp. 203-213.
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The main contribution of this paper is the reformulation of the simultaneous localization and mapping (SLAM) problem for mobile robots such that the mapping and localization can be treated as two concurrent yet separated processes: D-SLAM (decoupled SLAM). It is shown that SLAM can be decoupled into solving a non-linear static estimation problem for mapping and a low-dimensional dynamic estimation problem for localization. The mapping problem can be solved using an Extended Information Filter where the information matrix is shown to be exactly sparse. A significant saving in the computational effort can be achieved for large scale problems by exploiting the special properties of sparse matrices. An important feature of D-SLAM is that the correlation among landmarks are still kept and it is demonstrated that the uncertainty of the map landmarks monotonically decrease. The algorithm is illustrated through computer simulations and experiments.
Wang, Z, Huang, S & Dissanayake, G 1970, 'Multi-robot simultaneous localization and mapping using D-SLAM framework', PROCEEDINGS OF THE 2007 INTERNATIONAL CONFERENCE ON INTELLIGENT SENSORS, SENSOR NETWORKS AND INFORMATION PROCESSING, International Conference on Intelligent Sensors, Sensor Networks and Information Processing, ARC Research Network on Sensor Networks, Melbourne, pp. 317-322.
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This paper presents an algorithm for the multi-robot simultaneous localization and mapping (SLAM) problem with the robot initial locations completely unknown. Each robot builds its own local map using the traditional Extended Kalman Filter (EKF) SLAM algorithm. We provide a new method to fuse the local maps into a jointly maintained global map by first transforming the local map state estimate into relative location information and then conducting the fusion using the decoupled SLAM (D-SLAM) framework [1O]. An efficient algorithm to find the map overlap and corresponding beacons across the maps is developed from a point feature based medical image registration method and the joint compatibility test. By adding the robot initial pose of each local map into the global map state, the algorithm shows valuable properties. Simulation results are provided to illustrate the effectiveness of the algorithm. ©2007 IEEE.
Wattana, S, Sharma, D & Vaiyavuth, R 1970, 'Electricity Industry Reforms in Thailand: A Historical Review', GMSARN International Conference on Sustainable Development: Challenges and Opportunities for GMS, GMSARN International Conference on Sustainable Development, Greater Mekong Subregion Academic And Research Network (GMSARN), Pattaya, Thailand, pp. 1-9.
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The Thai Electricity Supply Industry (ESI) has been undergoing reform since the early 1990s. The first stage of reform resulted in the introduction of Independent Power Producers (IPPs) and Small Power Producers (SPPs) programs. This was followed by, in the mid-to-late 1990s, a proposal to introduce a market-oriented reform. This reform program envisaged the separation of generation from transmission and distribution functions; introduction of competition in generation; development of new market-oriented regulatory arrangements, and the privatization of the industry. This reform, argued its proponents, will improve the efficiency of the electricity industry; lower electricity tariff; improve quality of service; draw private investment into power generation sector; reduce the governments investment burden of financing expensive electricity infrastructure and hence enhance its capacity for investing in other priority programs such as health, education and other social activities. This paper examines the veracity of these arguments. This examination is assisted by a historical review of the evolution of the Thai Electricity Supply Industry (ESI). This review reveals that the above noted arguments are unsupportable on the basis of the technological, economic, environmental, social and political realities prevalent in Thailand. This paper further emphases the need to clearly identify the real rationale for reform so that an appropriate reform pathway consonant with socio-political contexts in Thailand could be selected.
Widjaja, J, Samali, B & Li, J 1970, 'The use of displacement threshold for switching frequency strategy for structural vibration mitigation', JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, 8th International Conference on Motion and Vibration Control, KOREAN SOC MECHANICAL ENGINEERS, Daejeon, SOUTH KOREA, pp. 865-869.
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Willey, K, Jacobs, BJ & Walmsley, M 1970, 'Self and peer assessment to promote professional skill development: moving from ad-hoc to planned integration', Proceedings of the 18th Conference of the Australasian Association of Engineering Education, AAEE - Annual Conference of Australasian Association for Engineering Education, Australasian Association for Engineering Education, Melbourne, Australia, pp. 1-8.
Witzigmann, B, Steiger, S, Tomamichel, M, Veprek, R & Schwarz, UT 1970, 'Optical gain in 407nm and 470nm InGaN/GaN heterostructures: signature of quantum-dot states', Optoelectronic Materials and Devices II, Asia-Pacific Optical Communications, SPIE, Wuhan, PEOPLES R CHINA.
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Wu, M & Gide, E 1970, 'A Comparative Study to Identify the E-Commerce Divide in Service SMEs in China and Australia', International Conference on Information Management and Internet Research, Western Australia.
Wu, M & Gide, E 1970, 'A Study to Analysis The Effectiveness of E-mail Surveys in E-commerce Research in Australia', International Conference on Information Management and Internet Research, Joondalup, Western Australia.
Wu, M, Zhang, L, Xing, Q, Dai, L & Du, H 1970, 'A Study for Understanding E-Commerce Adoption in China's Service SMEs from Web Usability Perspective', 2007 International Conference on Wireless Communications, Networking and Mobile Computing, 2007 International Conference on Wireless Communications, Networking and Mobile Computing, IEEE.
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Wu, Q, Wang, L, Geng, X, Li, M & He, S 1970, 'Dynamic Biometrics Fusion at Feature Level for Video-Based Human Recognition', Proceedings of Image and Vision Computing New Zealand 2007, Image and Vision Computing Conference, Image and Vision Computing New Zealand, Hamilton, New Zealand, pp. 152-157.
Wyeth, P 1970, 'Agency, tangible technology and young children', Proceedings of the 6th international conference on Interaction design and children, IDC07: International Conference on Interaction Design and Children, ACM.
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Xi Zhu, Moritz, J & Yichuang Sun 1970, 'Design of a fourth-order continuous-time filter for UWB receivers', Norchip 2007, 2007 Norchip Conference, IEEE.
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The design and implementation of a CMOS current-mode fourth-order Butterworth continuous-time leap-frog (LF) multiple loop feedback (MLF) lowpass filter is described. The filter is implemented using a fully-differential linear, low voltage and low power operational transconductance amplifier (OTA). PSpice simulations using a standard TSMC 0.18μm CMOS process with 1.5V power supply have shown that the cut-off frequency of the filter ranges from 240MHz to 300MHz and dynamic range is about 58dB at 240MHz of cut-off frequency. The power consumption of the filter is only from 22.3 to 55mW. The total output noise density is about 390nA/√HZ. © 2007 IEEE.
Xi Zhu, Yichuang Sun & Moritz, J 1970, 'A 0.18μm CMOS 9mW current-mode FLF linear phase filter with gain boost', 2007 50th Midwest Symposium on Circuits and Systems, 2007 Joint 50th IEEE International Midwest Symposium on Circuits and Systems (MWSCAS) and the IEEE Northeast Workshop on Circuits and Systems (NEWCAS 2007), IEEE, pp. 1517-1520.
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The design and implementation of a CMOS continuous-time follow-the-leader-feedback (FLF) filter is described. The filter is implemented using a fully-differential linear, low voltage and low power consumption operational transconductance amplifier (OTA) based on a source degeneration topology. PSpice simulations using a standard TSMC 0.18μm CMOS process with 2V power supply have shown that the cut-off frequency of the filter ranges from 55MHz to 160MHz and dynamic range is about 45dB. The group delay is less than 5% over the whole tuning range; the power consumption is only 9mW. ©2007 IEEE.
Xi Zhu, Yichuang Sun & Moritz, J 1970, 'A CMOS 650 MHz seventh-order current-mode 0.05° equiripple linear phase filter', 2007 50th Midwest Symposium on Circuits and Systems, 2007 Joint 50th IEEE International Midwest Symposium on Circuits and Systems (MWSCAS) and the IEEE Northeast Workshop on Circuits and Systems (NEWCAS 2007), IEEE, pp. 167-170.
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Read/write channels for hard disk drives (HDD) require high-frequency continuous time filters (CTF) [1-5]. A 650 MHz current-mode seventh-order 0.05° equiripple linear phase low-pass filter for computer hard disk read/write channels with data rates up to 1Gbit/s is presented in this paper. It is implemented in CMOS using a leap-frog multiple loop feedback structure. The operational transconductance amplifier (OTA) used is based on a differential pair and uses source degeneration to achieve linearization and tuning. Simulated using a standard 0.18μm CMOS process, the dynamic range at 1% THD of the filter is 48dB, cut-off frequency can be tuned from 590MHz to 690MHz, group delay ripple is about 5%, and power consumption is 370mW from supply voltage of 2.5V. ©2007 IEEE.
Xia, L, Lang, J & Ying, M 1970, 'Sequential voting rules and multiple elections paradoxes.', TARK, pp. 279-288.
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Multiple election paradoxes arise when voting separately on each issue from a set of related issues results in an obviously undesirable outcome. Several authors have argued that a sufficient condition for avoiding multiple election paradoxes is the assumption that voters have separable preferences. We show that this extremely demanding restriction can be relaxed into the much more reasonable one: there exists a linear order x1 > ... > x p on the set of issues such that for each voter, every issue x i is preferentially independent of xi+1, ..., x p given x1, ..., xi-1. This leads us to define a family of sequential voting rules, defined as the sequential composition of local voting rules. These rules relate to the setting of conditional preference networks (CP-nets) recently developed in the Artificial Intelligence literature. We study in detail how these sequential rules inherit, or do not inherit, the properties of their local components. We focus on the case of multiple referenda, corresponding to multiple elections with binary issues.
Xia, L, Lang, J & Ying, M 1970, 'Strongly Decomposable Voting Rules on Multiattribute Domains.', AAAI, AAAI Press, pp. 776-781.
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Sequential composition of voting rules, by making use of structural properties of the voters' preferences, provide computationally economical ways for making a common decision over a Cartesian product of finite local domains. A sequential composition is usually defined on a set of legal profiles following a fixed order. In this paper, we generalize this by order-independent sequential composition and strong decomposable, which are independent of the chosen order. We study to which extent some usual properties of voting rules transfer from the local rules to their order-independent sequential composition. Then, to capture the idea that a voting rule is neutral or decomposable on a slightly smaller domain, we define nearly neutral, nearly decomposable rules for both sequential composition and order-independent sequential composition, which leads us to defining and studying decomposable permutations. We prove that any sequential composition of neutral local rules and any order-independent sequential composition of neutral local rules satisfying a necessary condition are nearly neutral. Copyright © 2007, Association for the Advancement of Artificial Intelligence (www.aaai.org). All rights reserved.
Xia, X & Zhang, J 1970, 'Steady states of nonlinear systems', 2007 IEEE INTERNATIONAL CONFERENCE ON CONTROL AND AUTOMATION, VOLS 1-7, IEEE International Conference on Control and Automation, IEEE, Guangzhou, PEOPLES R CHINA, pp. 2113-+.
Xianyi Rui, Ronghong, Junping Geng & Xiaojing Huang 1970, 'The largest eigenvalue characteristic of correlated complex wishart matrices and its application to MIMO MRC systems', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, Sydney, Australia, pp. 375-379.
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In this paper, we analyze statistical properties of the largest eigenvalue of correlated complex Wishart matrices. The results provide an analytical tool for the study of multipleinput multiple-output (MIMO) maximal ratio combining (MRC) systems in the presence of spatial fading correlation at the transmitter or receiver. Based on them, the exact closed-form expressions for the cumulative distribution function and the probability density function of the output signal-to-noise ratio are presented. The analytical results are validated by Monte Carlo simulations. © 2007 IEEE.
Xiaojing Huang 1970, 'Diversity performance of precoded OFDM with MMSE equalization', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, Sydney, AUSTRALIA, pp. 802-807.
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Xiaojing Huang & Leong Keong Kwoh 1970, '3D building reconstruction and visualization for single high resolution satellite image', 2007 IEEE International Geoscience and Remote Sensing Symposium, 2007 IEEE International Geoscience and Remote Sensing Symposium, IEEE, Barcelona, SPAIN, pp. 5009-5012.
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Xiyin Liang, Jiangfeng Zhang & Xiaohua Xia 1970, 'Adaptive synchronization for a class of chaotic system', AFRICON 2007, AFRICON 2007, IEEE, Windhoek, NAMIBIA, pp. 454-459.
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Xu, J, Ye, G & Zhang, J 1970, 'Long-term Trajectory Extraction for Moving Vehicles', 2007 IEEE 9th Workshop on Multimedia Signal Processing, 2007 IEEE 9th Workshop on Multimedia Signal Processing, IEEE, Chania, GREECE, pp. 223-226.
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Xu, M, Luo, S & Jin, J 1970, 'Video Adaptation based on Affective Content with MPEG-21 DIA Framework', 2007 IEEE Symposium on Computational Intelligence in Image and Signal Processing, 2007 IEEE Symposium on Computational Intelligence in Image and Signal Processing, IEEE, pp. 386-390.
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We present a video adaptation system which takes account of users' preference on video Affective Content (AC) and limited network resource. AC directly causes an user's attention, evaluation and memory which also provides feasible entry for video highlight. According to user's preference, the proposed adaptation insures the video parcels with AC are allocated as much as possible network resource. The system is implemented with MPEG-21 Digital Item Adaptation (DIA) framework which provides a generic video adaptation solution for all video formats and various usage environments by manipulating on XML files. XML file based adaptation avoids complex video computation. 30 students from various departments were invited to test the system and their responses were positive. © 2007 IEEE.
Yading Li & Esselle, KP 1970, 'A height-reduced, slot-array-fed EBG resonator antenna with high gain and large bandwidth', 2007 IEEE Antennas and Propagation Society International Symposium, 2007 IEEE Antennas and Propagation Society International Symposium, IEEE, pp. 4417-4420.
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A slot-array-fed ID EBG resonator antenna, presented previously, demonstrated high gain and large bandwidth [6]. In this paper, we propose a method to reduce the overall height of this antenna, by replacing the three-layer ID EBG superstrate with a singlelayer of highly reflective frequency selective surface (FSS). A significant reduction of the antenna height from 30mm to 12.4mm is predicted with a 8% gain bandwidth and 24dB gain. A 32-slot array is perforated on the metallic ground plane and is fed by a50Ω stripline power divider network. Theoretical results are obtained using HFSS. ©2007 IEEE.
Yading Li, YL & Esselle, KP 1970, 'Analysis and design of 2D planar, metallic, periodic structures using the coupled field expansion method', 2nd European Conference on Antennas and Propagation (EuCAP 2007), 2nd European Conference on Antennas and Propagation (EuCAP 2007), Institution of Engineering and Technology.
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The coupled field expansion method (CFEM) has been proposed, and validated recently by applying to frequency selective surfaces (FSS) and printed artificial magnetic conductor (AMC) surfaces. In this paper, we demonstrate another novel application of the CFEM - designing a 2D FSS to behave as a circular polarizer as well as a reflector over a wide operating frequency band. The polarizer transforms a linearly polarized incident wave into a circularly polarized reflected wave. For one example design at 11.8 GHz, its 3 dB axial ratio (AR) bandwidth is 43% and 1 dB AR bandwidth is 33%. It can be compactly printed on a lightweight substrate like FR4. To gain insight into the features and properties of the polarizer, the results of a comprehensive parametric study are discussed.
Yafi, E, Alam, MA & Biswas, R 1970, 'Development of Subjective Measures of Interestingness: From Unexpectedness to Shocking', PROCEEDINGS OF WORLD ACADEMY OF SCIENCE, ENGINEERING AND TECHNOLOGY, VOL 26, PARTS 1 AND 2, DECEMBER 2007, Conference of the World-Academy-of-Science-Engineering-and-Technology, WORLD ACAD SCI, ENG & TECH-WASET, Bangkok, THAILAND, pp. 368-+.
Yan, Y, Zhu, J & Guo, Y 1970, 'A Direct Torque Controlled Surface Mounted PMSM Drive with Initial Rotor Position Estimation Based on Structural and Saturation Saliencies', 2007 IEEE Industry Applications Annual Meeting, 2007 IEEE Industry Applications Annual Meeting, IEEE.
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Yan, Y, Zhu, J & Guo, Y 1970, 'A Direct Torque Controlled Surface Mounted PMSM Drive with Initial Rotor Position Estimation Based on Structural and Saturation Saliencies', 2007 IEEE Industry Applications Annual Meeting, 2007 IEEE Industry Applications Annual Meeting, IEEE, New Orleans, USA, pp. 683-689.
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For a practical direct torque controlled (DTC) permanent magnet synchronous motor (PMSM) drive system, the information of the initial rotor position, which is usually obtained by a mechanical position sensor, is essential for starting under the full load. In order to avoid the disadvantages of using mechanical position sensors, great efforts have been made on the development of sensorless control schemes. This paper presents an initial rotor position estimation scheme for a DTC PMSM drive based on a nonlinear model of PMSM incorporating both structural and saturation saliencies. Firstly, the performance of the estimation scheme is simulated within Matlab/Simulink environment. Based on the simulation results, the estimation scheme has been investigated. Experiments have also been carried out to identify the initial rotor position of a surface mounted PMSM (SPMSM). In the experiment, specially designed high voltage pulses are applied to amplify the saturation saliencies. The peak currents corresponding to the voltage pulses are used, in combination with the inductance patterns, to determine the d-axis position and the polarity of the rotor. Finally, the presented initial rotor position identification strategy has been implemented in a sensorless DTC drive for an SPMSM. Experiments are conducted to confirm the effectiveness of the method and the performance of the drive system.
Yang, J & Zhang, J 1970, 'Offline Swimmer Cap Tracking Using Trajectory Interpolation', 9th Biennial Conference of the Australian Pattern Recognition Society on Digital Image Computing Techniques and Applications (DICTA 2007), 9th Biennial Conference of the Australian Pattern Recognition Society on Digital Image Computing Techniques and Applications (DICTA 2007), IEEE, pp. 579-585.
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In this paper, we present a preliminary attempt to solve the difficult problem of tracking swimmer cap in swimming videos to facilitate swimmer performance assessment. Due to the great challenges posed by moving camera and severe figure-background occlusions, an offline approach based on trajectory interpolation is adopted. Firstly, each frame is searched for hypothesized positions of the target cap using mean shift mode seeking. Secondly, most outliers due to ambiguities and noise are eliminated using lane constraints, and the hypothesis in the space-time volume are clustered into trajectory segments based on a spatial and temporal closeness criteria. Finally, cubic spline trajectory interpolation is used to infer the target cap position in occluded frames. Experiments show that satisfying tracking results are achieved by our approach. © 2007 IEEE.
Yang, L, Guo, B & Ni, W 1970, 'Multifocus Image Fusion Algorithm Based on Contourlet Decomposition and Region Statistics', Fourth International Conference on Image and Graphics (ICIG 2007), Fourth International Conference on Image and Graphics (ICIG 2007), IEEE, PEOPLES R CHINA, Sichuan Univ, Chengdu, pp. 707-+.
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Yi Sun, Yilin Song, Jinglin Shi & Dutkiewicz, E 1970, 'Research on bandwidth reservation in IEEE 802.16 (WiMAX) networks', 2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications, 2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications, IEEE, pp. 638-643.
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According to the characteristics and QoS requirements of different types of service flows, this paper proposes a dynamic, prediction-based, multi-class, adaptive bandwidth reservation scheme for IEEE 802.16 (WiMAX) networks. The scheme adopts different bandwidth reservation and admission control policies to different types of service flows and therefore guarantees that the real-time sessions have higher priorities than non real-time sessions and that handover sessions have higher priorities than new sessions. In addition, a bandwidth reservation adaptation algorithm is also proposed. The algorithm adjusts the amount of bandwidth reserved for handover sessions according to the current network conditions thus creating a balance between new session blocking rate and handover session dropping rate. ©2007 IEEE.
Yilin Song, Yi Sun, Min Liu & Dutkiewicz, E 1970, 'Comparative analysis of resource reservation cost for different RSVP extension schemes in mobile environments', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, pp. 1331-1336.
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In wireless networks, advanced resource reservation becomes a necessary requirement for fast handover with QoS guarantee because of the mobility of nodes. However, advanced resource reservation would unavoidably lead to system resource wasting. In this paper, taking the representative RSVP extension schemes with mobility support, MRSVP, Multicast RSVP and Fast RSVP as examples, we analyze factors affecting resource reservation costs and present formalized expressions of reservation costs for these different resource reservation schemes. On this basis, we quantify and compare the reservation costs for different resource reservation schemes, and then give recommendations on resource reservation schemes design for mobile environments. © 2007 IEEE.
Yin, B & Chen, F 1970, 'Towards Automatic Cognitive Load Measurement from Speech Analysis', HUMAN-COMPUTER INTERACTION, PT 1, PROCEEDINGS, 12th International Conference on Human-Computer Interaction (HCI International 2007), Springer Berlin Heidelberg, Beijing, PEOPLES R CHINA, pp. 1011-1020.
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Yin, B, Ambikairajah, E & Chen, F 1970, 'A novel weighting technique for combining likelihood scores in language identification systems', 2007 6TH INTERNATIONAL CONFERENCE ON INFORMATION, COMMUNICATIONS & SIGNAL PROCESSING, VOLS 1-4, 6th International Conference on Information, Communications and Signal Processing, IEEE, Singapore, SINGAPORE, pp. 448-+.
Yin, B, Ambikairajah, E & Chen, F 1970, 'Hierarchical language identification based on automatic language clustering', International Speech Communication Association - 8th Annual Conference of the International Speech Communication Association, Interspeech 2007, Interspeech Conference 2007, ISCA-INT SPEECH COMMUNICATION ASSOC, Antwerp, BELGIUM, pp. 1217-1220.
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Due to the limitation of single-level classification, existing fusion techniques experience difficulty in improving the performance of language identification when the number of languages and features are further increased. Given that the similarity of feature distribution between different languages may vary, we propose a novel hierarchical language identification framework with multi-level classification. In this approach, target languages are hierarchically clustered into groups according to the distance between them, models are trained both for individual languages and language groups, and classification is hierarchically done in multi-levels. This framework is implemented and evaluated in this paper, the results showing an relative 15.1% error-rate improvement in 30s case on OGI 10-language database compared to modern GMM fusion system.
Yin, B, Ruiz, N, Chen, F & Khawaja, MA 1970, 'Automatic cognitive load detection from speech features', Proceedings of the 19th Australasian conference on Computer-Human Interaction: Entertaining User Interfaces, OZCHI '07: Proceedings of the 19th conference of the computer-human interaction special interest group of Australia on Computer-human interaction: design, ACM, pp. 249-255.
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Cognitive load variations have been found to impact multimodal behaviour, in particular, features of spoken input. In this paper, we present a design and implementation of a user study aimed at soliciting natural speech at three different levels of cognitive load. Some of the speech data produced was then used to train a number of models to automatically detect cognitive load. We describe a classification approach, the cognitive load levels were detected and output as discrete level ranges. The final system achieved a 71.1% accuracy for 3 levels classification in a speaker-independent setting. The ability to detect and manage a user's cognitive load can help us to adapt intelligent interfaces that ensure optimal user performance.
Yiping Dou, Youguang Guo & Jianguo Zhu 1970, 'Investigation of motor topologies for SMC application', 2007 International Conference on Electrical Machines and Systems (ICEMS), 2007 International Conference on Electrical Machines and Systems, IEEE.
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Yoshizawa, S & Miyanaga, Y 1970, 'Use of a Variable Wordlength Technique in an OFDM Receiver to Reduce Energy Dissipation', 2007 IEEE International Symposium on Circuits and Systems (ISCAS), 2007 IEEE International Symposium on Circuits and Systems (ISCAS), IEEE.
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Yu, K & Guo, YJ 1970, 'NLOS Error Mitigation for Mobile Location Estimation in Wireless Networks', 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring, 2007 IEEE 65th Vehicular Technology Conference, IEEE, pp. 1071-1075.
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Most radio positioning methods are based on the measurements of distance between different wireless nodes. Owing to the existence of non-line-of-sight (NLOS) radio propagation, unfortunately, not all the measured distances are reliable. One way to tackle the problem of positioning is therefore to take two-steps: (i) identifying the NLOS measurements; (ii) smart signal processing of the mixed LOS and NLOS measurements. This paper is focused on the second issue. Under the assumption that the NLOS measurements have been identified, we first propose a simple method to suppress the effect of the NLOS error. Simulation results demonstrate that the proposed method achieves similar or better accuracy than several other known methods and the computational complexity is reduced considerably. We also present an optimal location estimator under the assumption of Gaussian distributed measurement noise and Rayleigh distributed NLOS error. Although it is difficult to achieve the optimal performance in practice due to modeling uncertainties, the optimal estimator provides a performance benchmark. © 2007 IEEE.
Yu, S & Li, Z 1970, 'Massive Data Delivery in Unstructured Peer-to-Peer Networks with Network Coding', 6th IEEE/ACIS International Conference on Computer and Information Science (ICIS 2007), 6th IEEE/ACIS International Conference on Computer and Information Science (ICIS 2007), IEEE, Melbourne, AUSTRALIA, pp. 592-+.
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Yu, Z & Baohua, B 1970, 'Phase-encoded Joint Transform Correlator by Use of Logarithmic Transformation', 2007 8th International Conference on Electronic Measurement and Instruments, 2007 8th International Conference on Electronic Measurement and Instruments, IEEE, Aveiro, PORTUGAL, pp. 1-6.
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Yuedong Zhan, Jianguo Zhu, Youguang Guo & Hua Wang 1970, 'Design of an active power factor converter for ups with backup proton exchange membrane fuel cell/battery', 2007 Australasian Universities Power Engineering Conference, 2007 Australasian Universities Power Engineering Conference (AUPEC), IEEE, Perth, Australia, pp. 435-440.
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Yuedong Zhan, Jianguo Zhu, Youguang Guo & Hua Wang 1970, 'Development of a single-phase high frequency UPS with backup PEM fuel cell and battery', 2007 International Conference on Electrical Machines and Systems (ICEMS), 2007 International Conference on Electrical Machines and Systems, IEEE.
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Yuehe Ge & Esselle, KP 1970, 'Designing high gain microwave antennas by optimising a FSS superstrate', 2007 European Microwave Conference, 2007 European Microwave Conference, IEEE, Munich, GERMANY, pp. 412-415.
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Yuehe Ge, Esselle, KP & Bird, TS 1970, 'A high-gain low-profile EBG resonator antenna', 2007 IEEE Antennas and Propagation Society International Symposium, 2007 IEEE Antennas and Propagation Society International Symposium, IEEE, pp. 1301-1304.
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We propose a low-profile high-gain electromagnetic band-gap (EBG) resonator antenna that utilizes a double-sliced frequency-selective surface (FSS) on a single superstrate. In this design, a microgenetic algorithm is employed to optimise the FSS so that the EBG resonator antenna can achieve a directivity of 22 dBi, which is normally achieved by EBG antennas with multiple dielectric layers. © 2007 IEEE.
Yusop, N, Mehboob, Z & Zowghi, D 1970, 'The Role of Conducting Stakeholder Meeting in Requirements Engineering Techniques', Second International Workshop on the Requirements Engineering Education and Training (REET) in conjuction with RE07, International Workshop on the Requirements Engineering Education and Training, IEEE Computer Society, Dehli, India, pp. 48-55.
Zhan, Y, Zhu, J, Gu, Y & Wang, H 1970, 'Design of an active power factor converter for UPS with backup proton exchange membrane fuel cell/battery', 2007 AUSTRALASIAN UNIVERSITIES POWER ENGINEERING, VOLS 1-2, Australasian Universities Power Engineering Conference (AUPEC), IEEE, Curtin Univ Technol, Perth, AUSTRALIA, pp. 316-+.
Zhan, Y, Zhu, J, Guo, Y & Jin, J 1970, 'Control of proton exchange membrane fuel cell based on fuzzy logic', PROCEEDINGS OF THE 26TH CHINESE CONTROL CONFERENCE, VOL 4, 26th Chinese Control Conference, BEIJING UNIV AERONAUTICS & ASTRONAUTICS PRESS, Zhangjiajie, PEOPLES R CHINA, pp. 345-349.
Zhan, Y, Zhu, J, Guo, Y & Wang, H 1970, 'A PEMFC/battery hybrid UPS system for backup and emergency power applications', 2007 INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND DRIVE SYSTEMS, VOLS 1-4, 7th International Conference on Power Electronics and Drive Systems (PEDS 2007), IEEE, Bangkok, THAILAND, pp. 1662-+.
Zhan, Y, Zhu, J, Guo, Y & Wang, H 1970, 'A PEMFC/Battery Hybrid UPS System for Backup and Emergency Power Applications', 2007 7th International Conference on Power Electronics and Drive Systems, 2007 7th International Conference on Power Electronics and Drive Systems, IEEE, Bangkok, Thailand, pp. 1513-1517.
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This paper presents the development of a proton exchange membrane fuel cell (PEMFC) and battery hybrid uninterruptible power system (UPS) for backup and emergency power applications. A sixty-cell PEMFC stack is employed as the main power source at normal load and a 3-cell lead-acid battery is employed as the auxiliary power of the UPS at overload or during the PEMFC startup. The PEMFC consists of two valves for the hydrogen input and output respectively, a mass flow controller to adjust the hydrogen mass flow, and a pressure sensor to control the hydrogen pressure, and their control units for the management of the whole system. The design procedures of the UPS hybrid system are discussed. Experimental setups are presented and the experimental results verify the performances of the PEMFC/battery hybrid power source and the UPS system under the condition of computer load. The developed UPS system proves to be a cost-effective solution for backup and emergency power applications.
Zhan, Y, Zhu, J, Guo, Y & Wang, H 1970, 'Development of a single-phase high frequency UPS with backup PEM fuel cell and battery', Proceeding of International Conference on Electrical Machines and Systems, ICEMS 2007, International Conference on Electrical Machines and Systems, IEEE, Seoul, Korea, pp. 1840-1844.
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This paper presents a 300 W single-phase high frequency uninterrupted power supply (UPS) with backup proton exchange membrane fuel cell (PEMFC) and battery, DC/AC inverter, DC/DC converter, AC/DC rectifier, and AC/DC recharger. The principle and structure of the PEMFC/battery hybrid UPS system are introduced and discussed. Key practical techniques of the design are presented, including the design of the PEMFC generating system, the control technique of the AC/DC rectifier, AC/DC recharger, DC/AC inverter and DC/DC converter based on a microcomputer MC68HC11K4 and other integrated circuit chips. Experimental results show that during the switching process from battery to PEMFC, and vice versa, the UPS can provide an uninterrupted alternate voltage for the load, with low cost, low weight, small volume and size, great reliability and maintainability.
Zhang, G, Lu, J & Dillon, T 1970, 'Models and Algorithm for Fuzzy Multi-objective Multi-follower Linear Bilevel Programming', 2007 IEEE International Fuzzy Systems Conference, 2007 IEEE International Fuzzy Systems Conference, IEEE, Imperial College, London, UK, pp. 1-6.
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Basic bilevel programming deals with hierarchical optimization problems in which the leader at the upper level attempts to optimize his/her objective, subject to a set of constraints and his/her follower's solution, and the follower at the lower level tries to find an optimized strategy according to each of possible decisions made by the leader. Three issues may be involved in a basic bilevel decision problem. One is that bilevel decision making model may involve uncertain parameters which appear either in the objective functions or constraints of the leader or the follower or both. Second, the leader and the follower may have multiple conflict objectives that should be optimized simultaneously. Third, there may have multiple followers in a real decision situation. Following our previous work, this study proposes a set of fuzzy multi-objective multi-follower linear bilevel programming models to describe the three issues. It also develops an approximation Branch-and-bound algorithm to solve such kinds of problems. © 2007 IEEE.
Zhang, G, Zhang, G, Ma, J & Zhou, C 1970, 'Three Real-Coded Genetic Algorithms With New Mutation Operators', Proceedings on Intelligent Systems and Knowledge Engineering (ISKE2007), International Conference on Intelligent Systems and Knowledge Engineering 2007, Atlantis Press, Chengdu, China, pp. 531-534.
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Local search is mainly implemented by the reproduction and crossover operation, global search is assured by the mutation operation in conventional genetic algorithm. In order to enhance the global search ability, three new mutation operators are proposed based on the idea that big change into small and small change into big for gene bit selected at random. The experimental verification shows that the proposed new genetic algorithms with new mutation operators are effective in seeking for the global optimal solutions.
Zhang, J & Chen, Y 1970, 'Single Local-Oscillator Solution for Multiband OFDM Systems', 2007 IEEE International Conference on Communications, 2007 IEEE International Conference on Communications, IEEE, IEEE, pp. 4116-4121.
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Zhang, J & Lu, DD-C 1970, 'A Novel Single Stage Power Factor Correction Scheme with Time-Multiplexing Control', IECON 2007 - 33rd Annual Conference of the IEEE Industrial Electronics Society, IECON 2007 - 33rd Annual Conference of the IEEE Industrial Electronics Society, IEEE, pp. 1432-1437.
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A flyback-based single-stage power factor correction scheme with time-multiplexing control is proposed. Main and auxiliary switches operate independently within a same time cycle. High power factor and low output line-frequency voltage ripple are both obtained in discontinuous conduction mode. The major output power is directly delivered to the load. A single transformer is used for the power conversion. The main and auxiliary outputs are fully isolated. The experimental results confirm the effectiveness of the proposed scheme with high power factor and tight output regulation. ©2007 IEEE.
Zhang, J, Chen, Y & Jayalath, D 1970, 'Complexity Adaptive OFDM Systems', 2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07, 2007 IEEE International Conference on Acoustics, Speech, and Signal Processing, IEEE, IEEE, pp. III-381.
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Zhang, JA, Chen, Y & Jayalath, D 1970, 'Complexity adaptive OFDM systems', 2007 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOL III, PTS 1-3, PROCEEDINGS, 32nd IEEE International Conference on Acoustics, Speech and Signal Processing, IEEE, Honolulu, HI, pp. 381-384.
Zhang, JA, Luo, L & Shi, Z 1970, 'Quadrature OFDMA Systems', IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference, IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference, IEEE, IEEE, pp. 3734-3739.
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Zhang, K, Tsang, IW & Kwok, JT 1970, 'Maximum margin clustering made practical', Proceedings of the 24th international conference on Machine learning, ICML '07 & ILP '07: The 24th Annual International Conference on Machine Learning held in conjunction with the 2007 International Conference on Inductive Logic Programming, ACM, pp. 1119-1126.
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Maximum margin clustering (MMC) is a recent large margin unsupervised learning approach that has often outperformed conventional clustering methods. Computationally, it involves non-convex optimization and has to be relaxed to different semidefinite programs (SDP). However, SDP solvers are computationally very expensive and only small data sets can be handled by MMC so far. To make MMC more practical, we avoid SDP relaxations and propose in this paper an efficient approach that performs alternating optimization directly on the original non-convex problem. A key step to avoid premature convergence is on the use of SVR with the Laplacian loss, instead of SVM with the hinge loss, in the inner optimization subproblem. Experiments on a number of synthetic and real-world data sets demonstrate that the proposed approach is often more accurate, much faster and can handle much larger data sets.
Zhang, Y & Xu, G 1970, 'On Web Communities Mining and Analysis', Third International Conference on Semantics, Knowledge and Grid (SKG 2007), Third International Conference on Semantics, Knowledge and Grid (SKG 2007), IEEE, Shan Xi, China, pp. 20-25.
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Due to the lack of a uniform schema for web documents and the sheer amount and dynamics of web data, both the effectiveness and the efficiency of information management and retrieval of web data is often unsatisfactory when using conventional data management and searching techniques. To address this issue, we have adopted web mining and web community analysis approaches. Based on the analysis of web document contents, hyperlinks analysis, user access logs and semantic analysis, we have developed various approaches or algorithms to construct and analyze web communities, and to make recommendations. This paper will introduce and discuss various approaches on web community mining and recommendation. © 2007 IEEE.
Zhang, Y, Lin, X, Yuan, Y, Kitsuregawa, M, Zhou, X & Yu, JX 1970, 'Summarizing Order Statistics over Data Streams with Duplicates', 2007 IEEE 23rd International Conference on Data Engineering, 2007 IEEE 23rd International Conference on Data Engineering, IEEE, pp. 1329-1333.
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Zhang, Z & Piccardi, M 1970, 'A review of tracking methods under occlusions', Proceedings of IAPR Conference on Machine Vision Applications, MVA 2007, Machine Vision Applications, Institute of Industrial Science, The University of Tokyo, Tokyo, Japan, pp. 146-149.
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Object tracking in computer vision refers to the task of tracking individual moving objects accurately from one frame to another in an image sequence. Several tracking methods have been proposed in the recent literature capable of coping with a certain degree of occlusions of the objects. However, no comparative analysis of such methods has been presented to date and both the expert and the newcomer to this area may be confused about the relative effectiveness of each method when compared under the same level of complexity of the dynamic scene. In order to fulfill this need, this paper proposes a set of analysis criteria and provides a comparative review of the main recent tracking methods, in particular with respect to their capability of tracking objects under occlusions.
Zhang, Z & Zhou, JL 1970, 'ENVR 50-Determination of estrogenic and pharmaceutical chemicals in sewage effluent and receiving river water by spot and passive sampling', ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, AMER CHEMICAL SOC.
Zhao, JD, Sheng, DC & Sloan, SW 1970, 'Microstructural effect on the cavity expansion in a soil cylinder', Proceedings of the 10th International Symposium on Numerical Models in Geomechanics NUMOG 10 - Numerical Models in Geomechanics NUMOG 10, 10th International Symposium on Numerical Models in Geomechanics (NUMOG X), TAYLOR & FRANCIS LTD, Rhodes, GREECE, pp. 715-720.
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This paper presents an elastoplastic analysis for cavity expansion in a soil cylinder. Emphasis here is laid on the influence of microstructures in the soil on the macroscopic behaviour of the cavity expansion. In doing so, a strain gradient plasticity model is employed to model the soil behaviour in the cylinder. A numerical shooting method is developed to solve the resulting fourth-order ordinary differential equation with two-point boundary conditions for the gradient-dependent problem. Fully elastic-plastic solutions to the cavity expansion are obtained and they are compared with the corresponding conventional results. It is demonstrated that, in consideration of microstructural effects, the deformation and stress distributions in the cylinder are highly inhomogeneous during both the initial loading and the subsequent elastic and plastic expansion stages. The overall elastic-plastic behaviour of the gradient-dependent cylinder depends on the material parameters as well as the cylinder thickness. Interesting scale effects are observed and interpreted by the gradient-dependent model whereas this would be impossible by the corresponding conventional modeling. The results in this paper can be useful for benchmarking further numerical investigations of the cavity expansion problem. © 2007 Taylor & Francis Group.
Zhao, Y, Zhang, H, Figueiredo, F, Cao, L & Zhang, C 1970, 'Mining for combined association rules on multiple datasets', Proceedings of the 2007 international workshop on Domain driven data mining, KDD07: The 13th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, ACM, San Jose, USA, pp. 18-23.
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Many organisations have their digital information stored in a distributed systems structure scheme, be it in different locations, using vertically and horizontally distributed repositories, which brings about an high level of complexity to data mining. From a classical data mining view, where the algorithms expect a denormalised structure to be able to operate on, heterogeneous data sources, such as static demographic and dynamic transactional data are to be manipulated and integrated to the extent commercial association rules algorithms can be applied. Bearing in mind the usefulness and understandability of the application from a business perspective, combined rules of multiple patterns derived from different repositories, containing historical and point in time data, were used to produce new techniques in association mining applied to debt recovery. Initially debt repayment patterns were discovered using transactional data and class labels defined by domain expertise, then demographic patterns were attached to each of the class labels. After combining the patterns, two type of rules were discovered leading to different results: 1) same demographic pattern with different repayment patterns, and 2) same repayment pattern with different demographic patterns. The rules produced are interesting, valuable, complete and understandable, which shows the applicability and effectiveness of the new method.
Zhe Ren, Xu Fang, Shuhong Wang, Jie Qiu, Jian Guo Zhu, Youguang Guo, Xiaofeng Yang, Ha, JH, Zhenyu Wang, Yingke Sun & Jiunan Zhang 1970, 'Design Optimization of an Interior-type Permanent Magnet BLDC Motor using PSO and Improved MEC', 2007 International Conference on Electrical Machines and Systems (ICEMS), 2007 International Conference on Electrical Machines and Systems, IEEE.
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Zheng, L, He, S, Wu, Q & Hintz, TB 1970, 'Number Plate Recognition without Segmentation', Proceedings of Image and Vision Computing New Zealand 2007, Image and Vision Computing Conference, Image and Vision Computing New Zealand, Hamilton, New Zealand, pp. 164-168.
Zhongxin, W, Dongbo, Y, Yongjian, W, Bingheng, Y & Depei, Q 1970, 'Context-Aware Web Service Selection Based on Multi-aspects Regulating', The 2nd IEEE Asia-Pacific Service Computing Conference (APSCC 2007), The 2nd IEEE Asia-Pacific Service Computing Conference (APSCC 2007), IEEE, Tsukuba science city, Japan, pp. 33-39.
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IEEE computer society conference publishing services (CPS)
Zhou, J, Wang, Z & Xiao, C 1970, 'Perceptive Factors for Volume Visualization in Medical Image Analysis', 2007 IEEE/ICME International Conference on Complex Medical Engineering, 2007 IEEE/ICME International Conference on Complex Medical Engineering, IEEE, Beijing, PEOPLES R CHINA, pp. 579-585.
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Zhou, JL, Maskaoui, K & Hibberd, A 1970, 'ENVR 197-Colloid-facilitated transport of pharmaceuticals in wastewater and natural waters', ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, AMER CHEMICAL SOC.
Zhou, S, Liu, R, Everitt, D & Zic, J 1970, 'A<sup>2</sup>-MAC: an application adaptive medium access control protocol for data collections in wireless sensor networks', 2007 International Symposium on Communications and Information Technologies, 2007 International Symposium on Communications and Information Technologies, IEEE, Sydney, AUSTRALIA, pp. 1131-1136.
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Zhou, W, Miro, JV & Dissanayake, G 1970, 'Information efficient 3D visual SLAM in unstructured domains', PROCEEDINGS OF THE 2007 INTERNATIONAL CONFERENCE ON INTELLIGENT SENSORS, SENSOR NETWORKS AND INFORMATION PROCESSING, International Conference on Intelligent Sensors, Sensor Networks and Information Processing, IEEE, Melbourne, Victoria, pp. 323-328.
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This paper presents a strategy for increasing the efficiency of simultaneous localisation and mapping (SLAM) in unknown and unstructured environments using a vision-based sensory package. Traditional feature-based SLAM, using either the Extended Kalman Filter (EKF) or its dual, the Extended Information Filter (EIF), leads to heavy computational costs while the environment expands and the number of features increases. In this paper we propose an algorithm to reduce computational cost for real-time systems by giving robots the 'intelligence' to select, out of the steadily collected data, the maximally informative observations to be used in the estimation process. We show that, although the actual evaluation of information gain for each frame introduces an additional computational cost, the overall efficiency is significantly increased by keeping the matrix compact. The noticeable advantage of this strategy is that the continuously gathered data is not heuristically segmented prior to be input to the filter. Quite the opposite, the scheme lends itself to be statistically optimal. © 2007 IEEE.
Zhu, J, Guo, Y, Lin, Z & Huang, Y 1970, 'Advanced SMC Motors and Drive Techniques', Proceedings of 2nd International Forum on Systems and Mechatronics, International Forum on Systems and Mechatronics, organisers of the International Forum on Systems and Mechatronics, Tainan, Taiwan, pp. 1-7.
Zhu, X & Hao, H 1970, 'Dynamic assessment of highway bridges under operating vehicle loads', Structural Health Monitoring 2007: Quantification, Validation, and Implementation - Proceedings of the 6th International Workshop on Structural Health Monitoring, IWSHM 2007, 6th International Workshop on Structural Health Monitoring, DESTECH PUBLICATIONS, INC, Stanford Univ, Stanford, CA, pp. 821-828.
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This study presents a novel method to extract the damage information from the response of a bridge induced by operating vehicles. A new damage index based on the spatial curvature shape is defined to estimate the location and extend of damage. Numerical simulation shows the method is reliable and effective to assess the condition of highway bridges. The results also show the operating vehicle loads could be utilized to reduce the required number of sensors. The proposed method has the potential of detecting damages using vehicle response of highway bridges with small number of sensors and without interrupting the traffic flow.
Zhu, X, Sun, Y & Moritz, J 1970, 'A 0.18μm CMOS 300MHz Current-mode LF seventh-order linear phase filter for hard disk read channels', Proceedings - IEEE International Symposium on Circuits and Systems, pp. 3307-3310.
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A 300MHz CMOS seventh-order linear phase gm-C filter based on a current-mode multiple loop feedback (MLF) leap-frog (LF) structure is realized. The filter is implemented using a fully-differential linear operational transconductance amplifier (OTA) based on a source degeneration topology. PSpice simulations using a standard TSMC 0.18μm CMOS process with 2.5V power supply have shown that the cut-off frequency of the filter can be tuned from 260MHz to 320MHz and dynamic range is about 66dB. Group delay ripple is approximately 4.5% over the whole tuning range and maximum power consumption is 210mW. © 2007 IEEE.
Zhu, X, Sun, Y & Moritz, J 1970, 'A CMOS fifth-order 400MHz current-mode LF linear phase filter for hard disk read channels', 2007 18th European Conference on Circuit Theory and Design, 2007 European Conference on Circuit Theory and Design (ECCTD 2007), IEEE, pp. 340-343.
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A 400MHz CMOS fifth-order linear phase gm-c filter based on current-mode (CM) leapfrog (LF) structure is realized. The filter is implemented using a fully-differential linear operational transconductance amplifier (OTA) based on source degeneration topology. PSpice simulations in a standard TSMC 0.18μm CMOS process and with 2.5V power supply have shown that the cut-off frequency of the filter ranges from 330MHz to 450MHz and dynamic range is about 64dB. The group delay is approximately 4% over the whole tuning range and total power consumption is only 190mW at 400MHz cut-off frequency. © 2007 IEEE.
Zhu, XQ & Hao, H 1970, 'Damage assessment of a two-span RC slab using wavelet analysis', Modeling, Signal Processing, and Control for Smart Structures 2007, The 14th International Symposium on: Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring, SPIE, San Diego, CA.
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Zhu, XQ & Hao, H 1970, 'Damage detection of bridge beam structures under moving loads', Conference Proceedings of the Society for Experimental Mechanics Series.
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System identification technique is used widely in the damage assessment of engineering structures. It is regarded as the key part of a structural health monitoring system, which identifies the physical parameters from the raw measurement data. The changes in the identified parameters will be used to assess the damage of the structure. Most system identification methods need the input loading and output response information. However, the input excitations, such as wind forces, traffic or earthquake loads are usually unknown or difficult to be accurately measured under actual operating conditions. This is particularly true for large civil engineering structures such as buildings, long bridges and offshore structures. System identification techniques using measured structural responses only to identify modal or structural parameters invoked great interests in the past few decades. In this paper, a novel method to detect the damage in bridge beam structures under load environment is developed. The load environment is modelled by a group of vehicle-bridge interaction forces moving at a prescribed velocity, and the bridge is modelled as a simply supported Euler-Bernoulli beam. Numerical simulations show the method is effective to identify the damage in the bridge structures.
Zhu, XQ & Hao, H 1970, 'Damage detection of RC slabs using nonlinear vibration features', STRUCTURAL CONDITION ASSESSMENT, MONITORING AND IMPROVEMENT, VOLS 1 AND 2, 2nd International Conference on Structural Condition Assessment, Monitoring and Improvement (SCAMI-2), SCIENCE PRESS BEIJING, Changsha, PEOPLES R CHINA, pp. 517-523.
Zhu, XQ & Hao, H 1970, 'Dynamic assessment of undersea pipeline bedding condition', SPIE Proceedings, The 14th International Symposium on: Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring, SPIE, San Diego, CA.
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Zhu, XQ & Hao, H 1970, 'Structural damage detection using wavelet support vector machine', Conference Proceedings of the Society for Experimental Mechanics Series.
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Based on wavelet packet decomposition and conditions of the support vector kernel function, a nonlinear wavelet basis is introduced to construct the kernel function of support vector machine (SVM). A tighten wavelet support vector machine (WSVM), which has strong generalization ability is also obtained. In this study, a novel damage classification method based on wavelet support vector machine is developed for structural health monitoring. The response signals of a structure under an impact load are normalized and then decomposed into wavelet packet components. Energies of these wavelet packet components are then calculated as the feature vectors. The feature vectors are used for training and classification of the inputs of the tighten SVM. Then, the structural damage location and extent is determined by prediction. Numerical study is carried out on a simply supported beam. Accelerations of the structure under impact loads are analysed. Results show that the method can be reliably used for damage monitoring and assessment of the structures.
Zhu, XQ, Hao, H & Peng, XL 1970, 'An experimental study of structure modal properties in different operational environments', STRUCTURAL CONDITION ASSESSMENT, MONITORING AND IMPROVEMENT, VOLS 1 AND 2, 2nd International Conference on Structural Condition Assessment, Monitoring and Improvement (SCAMI-2), SCIENCE PRESS BEIJING, Changsha, PEOPLES R CHINA, pp. 1055-1061.
Zhu, XQ, Hao, H, Peng, XL & Cheng, L 1970, 'Dynamic assessment of underwater pipeline systems using finite element model updating', STRUCTURAL CONDITION ASSESSMENT, MONITORING AND IMPROVEMENT, VOLS 1 AND 2, 2nd International Conference on Structural Condition Assessment, Monitoring and Improvement (SCAMI-2), SCIENCE PRESS BEIJING, Changsha, PEOPLES R CHINA, pp. 663-669.
Zhu, Y, Lee, J & Seshia, A 1970, 'MEMS Electrometer System Simulation using a Time-Domain Variable Capacitor Model', TRANSDUCERS 2007 - 2007 International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS 2007 - 2007 International Solid-State Sensors, Actuators and Microsystems Conference, IEEE.
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