Publications

Gunes, H, Piccardi, M & Pantic, M 2008, 'From the Lab to the Real World: Affect Recognition Using Multiple Cues and Modalities' in Or, J (ed), Affective Computing, I-Tech Education and Publishing, Vienna, Austria, pp. 185-218.
View/Download from: Publisher's site

Hoang, DB & Simmonds, AJ 2008, 'Data Communication and Network Infrastructure' in Feng, D (ed), Biomedical Information Technology, Elsevier, USA, pp. 229-248.
View/Download from: Publisher's site

Le, H, Hoang, D & Poliah, R 2008, 'S-Web: An Efficient and Self-organizing Wireless Sensor Network Model' in Takizawa, M, Barolli, L & Enokido, T (eds), Network-Based Information Systems, Springer Berlin Heidelberg, Germany, pp. 179-188.
View/Download from: Publisher's site
View description>>

One of the major weaknesses of existing centralized algorithms in Wireless Sensor Network (WSN) routing is that sensor nodes are required to report their status (e.g. remaining energy level) to the central node (i.e. the Base Station BS) and receive configuration information from the BS (e.g. next hop routing). As a result, the WSNs suffer from high communication and/or computation overheads at sensor nodes to accommodate topology changes in the WSN. This paper proposes a novel scheme, called a Sensor Web (or S-Web), that organizes sensors into clusters based on their geographical location without requiring the sensors to have a Global Positioning System or actively locate themselves. The S-Web enables nodes to route data packets while consuming low energy in a decentralized manner. The model is self-organizing and distributed without the need of global network knowledge.

Wang, L, Su, SW, Chan, GSH, Celler, BG, Cheng, TM & Savkin, AV 2008, 'Cardiovascular Response Identification Based on Nonlinear Support Vector Regression' in Fred, A, Filipe, J & Gamboa, H (eds), Communications in Computer and Information Science, Springer, Berlin Heidelberg, pp. 202-213.

Abolhasan, M & Wright, A 2008, 'Survey of the potential of emerging wireless technologies to improve telecommunication services in remote Australian settlements', RANGELAND JOURNAL, vol. 30, no. 1, pp. 157-165.
View/Download from: Publisher's site
View description>>

Providing efficient yet cost effective telecommunication systems to Aboriginal people living in remote locations has proven to be a challenging task. This is primarily due to low population density and distance from major service centres. Extending high-capacity telecommunications infrastructure to these people would incur high costs of installation, maintenance and administration without significant financial returns. The cost of services such as cabled phone lines to all houses, satellite and wireless cellular networks are often unaffordable for people in remote settlements, and, as a result, the provision of telecommunication services is often subsidised by the government. New wireless standards and products are being developed which could provide broadband-type network connections to large areas at an affordable price. This paper describes these new standards and products and their potential applications in rural and remote regions. There is also a comparison of their transmission requirements, cost, performance and coverage with several currently available technologies.

Agrawal, A, Kejalakshmy, N, Chen, J, Rahman, BMA & Grattan, KTV 2008, 'Golden spiral photonic crystal fiber: polarization and dispersion properties', Optics Letters, vol. 33, no. 22, pp. 2716-2716.
View/Download from: Publisher's site

Alvarez, GA, Wang, XL, Peleckis, G, Dou, SX, Zhu, JG & Lin, ZW 2008, 'Magnetotransport and magnetic properties of weak ferromagnetic semiconductors: Ca doped LaCrO3', Journal of Applied Physics, vol. 103, no. 7, pp. 07B916-07B916.
View/Download from: Publisher's site
View description>>

We report the magnetic and magnetotransport properties of Ca doped La1−xCaxCrO3 (x=0, 0.1, 0.2, and 0.3). Both the magnetic and transport properties are very sensitive to Ca substitution. The Néel temperature TN decreases substantially with increasing calcium doping concentration from 290to160K. A weak ferromagnetic state with large coercive fields of up to 3T is present for the Ca doped LaCrO3. The temperature dependence of the resistivity shows that all the Ca doped compounds are semiconducting and their resistivities decrease with increasing Ca for low doping levels. The resistivity curves show thermally activated behavior and a variable range hopping behavior at high temperatures. The magnetotransport measurements show a negative magnetoresistance. Furthermore, an anomalous peak was observed in the field dependence of magnetoresistance for the LCCO materials.

Bansal, G, Hossain, M & Bhargava, V 2008, 'Optimal and Suboptimal Power Allocation Schemes for OFDM-based Cognitive Radio Systems', IEEE Transactions on Wireless Communications, vol. 7, no. 11, pp. 4710-4718.
View/Download from: Publisher's site

Bian Wu, Chang-hong Liang, Qi Li & Pei-yuan Qin 2008, 'Novel Dual-Band Filter Incorporating Defected SIR and Microstrip SIR', IEEE Microwave and Wireless Components Letters, vol. 18, no. 6, pp. 392-394.
View/Download from: Publisher's site

CHAN, KY, FOGARTY, TC, AYDIN, ME, LING, SH & IU, HHC 2008, 'GENETIC ALGORITHMS WITH DYNAMIC MUTATION RATES AND THEIR INDUSTRIAL APPLICATIONS', International Journal of Computational Intelligence and Applications, vol. 07, no. 02, pp. 103-128.
View/Download from: Publisher's site
View description>>

This paper presents a method on how to estimate main effects of gene representation. This estimate can be used not only to understand the domination of genes in the representation but also to design the mutation rate in genetic algorithms (GAs). A new approach of dynamic mutation rate is proposed by integrating the information of the main effects into the genes. By introducing the proposed method in GAs, both solution quality and solution stability can be improved in solving a set of parametrical test functions. The algorithm was applied to two illustrative applications to evaluate the performance of the proposed method, where the first application is on solving uncapacitated facility location problems and the next is on optimal power flow problems, which are employed. Results indicate that the proposed method yields significantly better results than the existing methods.

Chen, J, Guo, Y, Zhu, JG & Lin, ZW 2008, 'A general electromagnetic field-circuit coupling method based on time-stepping finite element analysis for performance analysis of pulse-width modulated switching converters considering hysteresis effects', Journal of Applied Physics, vol. 103, no. 7, pp. 1-3.
View/Download from: Publisher's site
View description>>

Considering the special characteristics existing in the pulse-width modulated (PWM) switching converter, a general method for the time-stepping finite element analysis based electromagnetic field coupling with its feeding circuit used in the analysis of PWM switching converter considering hysteresis effects is introduced in this paper. Comparing with the electromagnetic field-circuit indirect coupling method (ICM), the proposed method has overcome the drawback that the ICM cannot take the hysteresis effects into account. Compared with the electromagnetic field-circuit direct coupling method (DCM), the proposed method has the similar accuracy but higher efficiency. Furthermore, like the ICM, the proposed method also divides the system with higher state dimensions produced by the DCM into two subsystems with lower state dimensions; this may reduce the algorithm convergence problem which often happens in high dimensional systems. © 2008 American Institute of Physics.

Chen, JX, Zhu, JG & Guo, YG 2008, 'A unified discrete model for PWM switching DC to DC converters with current-mode control', Australian Journal of Electrical and Electronics Engineering, vol. 4, no. 1, pp. 63-71.
View/Download from: Publisher's site
View description>>

This paper presents a unified discrete model for pulse-width modulated (PWM) switching DC to DC converters. The major achievement is that, without any topology modification, the proposed model can be used for performance analysis of the buck, boost and buck-boost converters with any of the two current-mode controls: peak current-mode control and average current-mode control. Three important factors are considered: parasitical effects of circuit elements, non-linear inductance dependent on the current flowing through it, and control time delay, such that the accuracy of performance prediction is greatly improved. Magnetic field finite element analysis (FEA) is conducted to calculate the non-linear differential inductance. By implementing the proposed model into Matlab/Simulink, a simulation model is built. The model has been used for the performance analysis of an existing flyback converter with the peak current-mode control. The simulation results are in good agreement with the actual performance, validating the proposed model.

Cheng, B, Ritz, CH & Burnett, IS 2008, 'Psychoacoustic-based quantisation of spatial audio cues', Electronics Letters, vol. 44, no. 18, pp. 1098-1098.
View/Download from: Publisher's site

Cheng, TM, Savkin, AV, Celler, BG, Su, SW & Wang, L 2008, 'Nonlinear Modeling and Control of Human Heart Rate Response During Exercise With Various Work Load Intensities', IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, vol. 55, no. 11, pp. 2499-2508.
View/Download from: Publisher's site
View description>>

The first objective of this paper is to introduce a nonlinear system to model the heart rate (HR) response during and after treadmill walking exercise. The model is a feedback interconnected system that has components to describe the central and peripheral local responses to exercise and their interactions. The parameters of the model were experimentally identified from subjects walking on a treadmill at different speeds. The stability of the obtained nonlinear model was mathematically proven. The modeling results demonstrate that the proposed model can be useful in examining the cardiovascular response to exercise. Based on the nonlinear model, the second objective is to present a computer-controlled treadmill system for the regulation of HR during treadmill exercise. The proposed nonlinear controller consists of feedforward and feedback components. The designed control system was experimentally verified and the results demonstrated that the proposed computer-controlled treadmill system regulated the HR of the experimental subjects according to two different exercising HR profiles, indicating that it can play an important role in the design of exercise protocols for individuals. © 2006 IEEE.

Collocott, SJ, Dunlop, JB & Watterson, PA 2008, 'Thermal and spontaneous remagnetization in the bulk amorphous ferromagnets Nd(60)Fe(30)Al(10) and Nd(60)Fe(20)Co(10)Al(10)', JOURNAL OF APPLIED PHYSICS, vol. 103, no. 7, pp. 1-3.
View/Download from: Publisher's site
View description>>

Bulk amorphous Nd60Fe30Al10 and Nd60Fe20Co10Al10 alloys, which display hard magnetic properties, have been prepared by arc melting and quenching into a copper mould. Following magnetic saturation and dc demagnetization, at room temperature, both materials are seen to exhibit the phenomena of thermal and spontaneous remagnetizations. The behavior of the observed thermal and spontaneous remagnetizations is similar to that exhibited in nucleation controlled sintered permanent magnets. The thermal remagnetization data are fitted using a model, developed from the theory of Schumann and Jahn [J. Magn. Magn. Mater. 232, 231 (2001)] for explaining thermal remagnetization in polycrystalline magnets, to gauge its usefulness when applied to amorphous ferromagnets. The spontaneous remagnetization behavior is interpreted in the context of the Preisach model.

Cordero, ML, Burnham, DR, Baroud, CN & McGloin, D 2008, 'Thermocapillary manipulation of droplets using holographic beam shaping: Microfluidic pin ball', Applied Physics Letters, vol. 93, no. 3, pp. 034107-034107.
View/Download from: Publisher's site
View description>>

We demonstrate that holographically generated optical patterns offer greater flexibility for the thermocapillary control of water droplets than Gaussian spots; droplets can be stopped in faster flows while using less optical intensity when the surface tension variations are created by line patterns instead of single spots. Further, experiments are performed making use of variable light patterns to achieve controlled droplet routing in a four-way cross microfluidic channel. Finally, multiple droplet storage is demonstrated as well as changing drop order.

Doeller, M, Tous, R, Gruhne, M, Yoon, K, Sano, M & Burnett, IS 2008, 'The MPEG Query Format: Unifying Access to Multimedia Retrieval Systems', IEEE MULTIMEDIA, vol. 15, no. 4, pp. 82-95.

Eichhammer, Y, Roeck, J, Moelans, N, Iacopi, F, Blanpain, B & Heyns, M 2008, 'CALCULATION OF THE Au-Ge PHASE DIAGRAM FOR NANOPARTICLES', ARCHIVES OF METALLURGY AND MATERIALS, vol. 53, no. 4, pp. 1133-1139.

Eslava, S, Baklanov, MR, Neimark, AV, Iacopi, F, Kirschhock, CEA, Maex, K & Martens, JA 2008, 'Evidence of Large Voids in Pure‐Silica‐Zeolite Low‐k Dielectrics Synthesized by Spin‐on of Nanoparticle Suspensions', Advanced Materials, vol. 20, no. 16, pp. 3110-3116.
View/Download from: Publisher's site

Eslava, S, Delahaye, S, Baklanov, MR, Iacopi, F, Kirschhock, CEA, Maex, K & Martens, JA 2008, 'Reaction of trimethylchlorosilane in spin-on silicalite-1 zeolite film', LANGMUIR, vol. 24, no. 9, pp. 4894-4900.
View/Download from: Publisher's site

Eslava, S, Eymery, G, Marsik, P, Iacopi, F, Kirschhock, CEA, Maex, K, Martens, JA & Baklanov, MR 2008, 'Optical property changes in low-k films upon ultraviolet-assisted curing', JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 155, no. 5, pp. G115-G120.
View/Download from: Publisher's site

Eslava, S, Iacopi, F, Urbanowicz, AM, Kirschhock, CEA, Maex, K, Martens, JA & Baklanov, MR 2008, 'Ultraviolet-Assisted Curing of Organosilicate Glass Low-k Dielectric by Excimer Lamps', Journal of The Electrochemical Society, vol. 155, no. 11, pp. G231-G231.
View/Download from: Publisher's site

Eslava, S, Urrutia, J, Busawon, AN, Baklanov, MR, Iacopi, F, Aldea, S, Maex, K, Martens, JA & Kirschhock, CEA 2008, 'Zeolite-Inspired Low-k Dielectrics Overcoming Limitations of Zeolite Films', JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 130, no. 51, pp. 17528-17536.
View/Download from: Publisher's site

Guillon, M, Dholakia, K & McGloin, D 2008, 'Optical trapping and spectral analysis of aerosols with a supercontiuum laser source', Optics Express, vol. 16, no. 11, pp. 7655-7655.
View/Download from: Publisher's site

Guo, Y, Zhu, JG, Lin, ZW, Lu, H, Wang, X & Chen, J 2008, 'Influence of inductance variation on performance of a permanent magnet claw pole soft magnetic composite motor', Journal of Applied Physics, vol. 103, no. 7, pp. 07F118-07F118.
View/Download from: Publisher's site
View description>>

Winding inductance is an important parameter in determining the performance of electrical machines, particularly those with large inductance variation. This paper investigates the influence of winding inductance variation on the performance of a three-phase three-stack claw pole permanent magnet motor with soft magnetic composite (SMC) stator by using an improved phase variable model. The winding inductances of the machine are computed by using a modified incremental energy method, based on three-dimensional nonlinear time-stepping magnetic field finite element analyses. The inductance computation and performance simulation are verified by the experimental results of an SMC claw pole motor prototype.

Guo, YG, Dou, YP, Zhu, JG, Zhan, YD & Jin, JX 2008, 'Parameter Determination And Performance Analysis of a Permanent Magnet Synchronous Generator By Magnetic Field Finite Element Analysis', Australian Journal of Electrical and Electronics Engineering, vol. 5, no. 3, pp. 225-262.
View/Download from: Publisher's site

Ha, QP, Kwok, NM, Nguyen, MT, Li, J & Samali, B 2008, 'Mitigation of seismic responses on building structures using MR dampers with Lyapunov-based control', STRUCTURAL CONTROL & HEALTH MONITORING, vol. 15, no. 4, pp. 604-621.
View/Download from: Publisher's site
View description>>

As losses of human lives and damages to buildings frequently occur during earthquake periods, it is crucial to mitigate structural vibrations. This paper describes the development of a Lyapunov-based control approach for magnetorheological (MR) dampers integrated in building structures to suppress 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 consumption. The control of MR dampers is, however, hindered by their hysteretic force-velocity responses and usually leads to indirect strategies compromising controllability and performance. To enhance the system performance, a Lyapunov-based controller is proposed here for direct control of the supply currents to the dampers for a multi-storey building. The dampers are configured in a differential mode to counteract the force-offset problem from the use of a single damper. The effectiveness of the proposed technique is verified, in simulations, by using a building model subject to quake-like excitations. Copyright © 2007 John Wiley & Sons, Ltd.

Haiwei Lu, Jianguo Zhu, Zhiwei Lin & Youguang Guo 2008, 'A Miniature Short Stroke Linear Actuator—Design and Analysis', IEEE Transactions on Magnetics, vol. 44, no. 4, pp. 497-504.
View/Download from: Publisher's site
View description>>

We report a newly developed miniature short stroke tubular linear permanent-magnet actuator for robotic applications. Compared to a rotary-to-linear mechanism, the linear actuator has the advantages of efficiency, thrust control, and compact size in gene

Hamilton, TJ, Jin, C, van Schaik, A & Tapson, J 2008, 'An Active 2-D Silicon Cochlea', IEEE Transactions on Biomedical Circuits and Systems, vol. 2, no. 1, pp. 30-43.
View/Download from: Publisher's site

He, X, Wu, Q, Jia, W & Hintz, T 2008, 'Edge Detection on Hexagonal Structure', Journal of Algorithms & Computational Technology, vol. 2, no. 1, pp. 61-78.
View/Download from: Publisher's site
View description>>

Gradient-based edge detection is a straightforward method to identify the edge points in the original grey-level image. It is intuitive that in the human vision system the edge points always appear where the grey-level value is greatly changed. Spiral Architecture is a relatively new image data structure that is inspired from anatomical considerations of the primate's vision. In Spiral Architecture, each image is represented as a collection of hexagonal pixels. Edge detection on Spiral Architecture has features of fast computation and accurate localization. In this paper, we present and compare gradient-based edge detection algorithms on Spiral Architecture. The experimental results show that the edge detection on Spiral Architecture outperforms that on traditional square image structure.

Hoang, D & Lawrence, E 2008, 'An Active Grid infrastructure for elderly care', Journal of Telemedicine and Telecare, vol. 14, no. 7, pp. 363-367.
View/Download from: Publisher's site
View description>>

We propose a technique in which elderly people can be monitored non-intrusively. The information is kept in an ‘active’ health record which becomes alive when attention or action is necessary concerning the condition of the elderly person. The proposed system consists of three main components: a sensor/actor loop, sensor records and associated active services, and a Grid middleware platform. Information is captured in realtime within a collaborative health-care Grid. The Grid connects elderly people, caregivers and medical service providers in ways that reduce unnecessary calls on expensive medical services through an intermediate local service centre (which can be virtual) assisted with Internet communications and monitoring technologies. The proposal should support preventive health-care programmes for reducing the cost of caring for the elderly.

Hoang, HG, Tuan, HD & Apkarian, P 2008, 'A Lyapunov Variable-Free KYP Lemma for SISO Continuous Systems', IEEE Transactions on Automatic Control, vol. 53, no. 11, pp. 2669-2673.
View/Download from: Publisher's site
View description>>

This technical note proposes a novel frequency-selective Kalman-Yakubovich-Popov (FS-KYP) lemma for analysis of single-input single-output (SISO) continuous systems. In contrast to existing approaches, the proposed method only uses a minimal number of va

Hoang, HG, Tuan, HD, Nguyen, TQ & Kha, HH 2008, 'Design of Exactly Linear Phase $K$-Regular IIR Half-Band Filter', IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 55, no. 12, pp. 1264-1268.
View/Download from: Publisher's site
View description>>

This paper proposes a novel method to design exactly linear phase infinite impulse response half-band filters with arbitrary regularity. Broadly speaking, the design problem is formulated as a semi-infinite program, which is then turned into a semidefini

Hossain, MJ, Pota, HR & Ugrinovskii, V 2008, 'Short and Long-Term Dynamic Voltage Instability', IFAC Proceedings Volumes, vol. 41, no. 2, pp. 9392-9397.
View/Download from: Publisher's site

Hung, NVQ, Tuan, HD, Narikiyo, T & Apkarian, P 2008, 'Adaptive Control for Nonlinearly Parameterized Uncertainties in Robot Manipulators', IEEE Transactions on Control Systems Technology, vol. 16, no. 3, pp. 458-468.
View/Download from: Publisher's site
View description>>

In this brief, a new adaptive control framework to compensate for uncertain nonlinear parameters in robot manipulators is developed. The designed adaptive controllers possess a linear parameter structure, guarantee global boundedness of the closed-loop s

Iacopi, F, Elia, C, Fournier, T, Sinapi, F & Travaly, Y 2008, 'Stress corrosion of organosilicate glass films in aqueous environments: Role of pH', JOURNAL OF MATERIALS RESEARCH, vol. 23, no. 3, pp. 862-868.
View/Download from: Publisher's site

Iacopi, F, Richard, O, Eichhammer, Y, Bender, H, Vereecken, PM, De Gendt, S & Heyns, M 2008, 'Size-dependent characteristics of indium-seeded Si nanowire growth', ELECTROCHEMICAL AND SOLID STATE LETTERS, vol. 11, no. 9, pp. K98-K100.
View/Download from: Publisher's site

Kegen Yu & Guo, YJ 2008, 'Improved Positioning Algorithms for Nonline-of-Sight Environments', IEEE Transactions on Vehicular Technology, vol. 57, no. 4, pp. 2342-2353.
View/Download from: Publisher's site
View description>>

Nonline-of-sight (NLOS) conditions pose a major challenge to radio positioning. In this paper, a constrained-optimization-based location algorithm is proposed to jointly estimate the unknown location and bias by using the sequential quadratic programming (SQP) algorithm. This method does not rely on any prior statistics information, and simulation results show that the proposed method considerably outperforms existing methods. To reduce the complexity of the SQP-based algorithm, we further propose a Taylor-series expansion-based linear quadratic programming (TS-LQP) algorithm. It is demonstrated that the computational complexity of the TS-LQP algorithm is only a fraction of that of the SQP algorithm, whereas the accuracy loss is limited. Also, maximum-likelihood (ML) algorithms that are suited for different NLOS error statistics are developed under several circumstances when there are different levels of a priori information. The analytical performance of the ML estimation (MLE) is investigated. Moreover, analytical expressions to approximate the variance of the MLE with and without model parameter mismatches are derived. Simulation results show that the approximate variance can be used as a better accuracy measure than the Cramer-Rao lower bound (CRLB). © 2008 IEEE.

Kejalakshmy, N, Rahman, BMA, Agrawal, A, Wongcharoen, T & Grattan, KTV 2008, 'Characterization of single-polarization single-mode photonic crystal fiber using full-vectorial finite element method', Applied Physics B, vol. 93, no. 1, pp. 223-230.
View/Download from: Publisher's site

Ki, S-K, Cheng, DK-W & Lu, DD-C 2008, 'Analysis and design of a single-phase hybrid mode power factor correction converter', IET Power Electronics, vol. 1, no. 1, pp. 72-72.
View/Download from: Publisher's site

Kong, X 2008, 'A shaping filter approach to model GPS errors', International Journal of Vehicle Information and Communication Systems, vol. 1, no. 3/4, pp. 181-181.
View/Download from: Publisher's site
View description>>

Copyright © 2008 Inderscience Enterprises Ltd. Although Differential Global Positioning System (DGPS) provides positioning information with high precision, when DGPS is unavailable in some situations, stand-alone GPS has to be used in vehicle navigation. The accuracy of standard GPS is low due to position measurement errors. This paper presents a frequency domain modelling approach to model GPS errors and increase GPS positioning accuracy. This approach models GPS errors using shaping filter. External sensors are employed to reduce GPS errors. This paper also presents an approach to select external sensors to meet the accuracy requirements of positioning system.

Kong, X 2008, 'A shaping filter approach to model GPS errors', Int. J. Vehicle Information and Communication Systems, vol. 1, no. 3/4, pp. 181-194.
View description>>

Although Differential Global Positioning System (DGPS) provides positioning information with high precision, when DGPS is unavailable in some situations, stand-alone GPS has to be used in vehicle navigation. The accuracy of standard GPS is low due to position measurement errors. This paper presents a frequency domain modelling approach to model GPS errors and increase GPS positioning accuracy. This approach models GPS errors using shaping filter. External sensors are employed to reduce GPS errors. This paper also presents an approach to select external sensors to meet the accuracy requirements of positioning system.

Lai, X, Li, Q, Qin, P-Y, Wu, B & Liang, C-H 2008, 'A NOVEL WIDEBAND BANDPASS FILTER BASED ON COMPLEMENTARY SPLIT-RING RESONATOR', Progress In Electromagnetics Research C, vol. 1, pp. 177-184.
View/Download from: Publisher's site

Lam, HK, Ling, W-K, Iu, HH-C & Ling, SSH 2008, 'Synchronization of chaotic systems using time-delayed fuzzy state-feedback controller', IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, vol. 55, no. 3, pp. 893-903.
View/Download from: Publisher's site

Lee, JE-Y, Bahreyni, B & Seshia, AA 2008, 'An axial strain modulated double-ended tuning fork electrometer', Sensors and Actuators A: Physical, vol. 148, no. 2, pp. 395-400.
View/Download from: Publisher's site

Lee, JE-Y, Bahreyni, B, Zhu, Y & Seshia, AA 2008, 'A Single-Crystal-Silicon Bulk-Acoustic-Mode Microresonator Oscillator', IEEE Electron Device Letters, vol. 29, no. 7, pp. 701-703.
View/Download from: Publisher's site

Lee, JE-Y, Zhu, Y & Seshia, AA 2008, 'A bulk acoustic mode single-crystal silicon microresonator with a high-quality factor', Journal of Micromechanics and Microengineering, vol. 18, no. 6, pp. 064001-064001.
View/Download from: Publisher's site

Lei, G, Shao, KR, Guo, Y, Zhu, J & Lavers, JD 2008, 'Sequential Optimization Method for the Design of Electromagnetic Device', IEEE TRANSACTIONS ON MAGNETICS, vol. 44, no. 11, pp. 3217-3220.
View/Download from: Publisher's site
View description>>

Three sequential optimization methods, sequential least square method, sequential Kriging method, and sequential linear Bayesian method, are presented for the optimization design of electromagnetic device. Sequential optimization method (SOM) is composed of coarse optimization process and fine optimization process. The main purpose of the former is to reduce the design space; while the target of the latter is to update the optimal design parameters. To illustrate the performance of the proposed methods, an analytic test function and the TEAM Workshop Problem 22 are investigated. Experimental results of test function demonstrate that SOM can obtain satisfactory solutions; and practical application illustrates that the number of finite element sample points is less than 1/10 compared with that by direct optimization method, while the optimal results are even better than that by direct optimization method.

Li, M, Yuan, X & Su, J 2008, 'The number of vertices of degree 7 in a contraction-critical 7-connected graph', Discrete Mathematics, vol. 308, no. 24, pp. 6262-6268.
View/Download from: Publisher's site

Liang, X, Zhang, J & Xia, X 2008, 'Adaptive Synchronization for Generalized Lorenz Systems', IEEE Transactions on Automatic Control, vol. 53, no. 7, pp. 1740-1746.
View/Download from: Publisher's site

Ling, SH, Iu, HHC, Chan, KY, Lam, HK, Yeung, BCW & Leung, FH 2008, 'Hybrid particle swarm optimization with wavelet mutation and its industrial applications', IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART B-CYBERNETICS, vol. 38, no. 3, pp. 743-763.
View/Download from: Publisher's site
View description>>

A new hybrid particle swarm optimization (PSO) that incorporates a wavelet-theory-based mutation operation is proposed. It applies the wavelet theory to enhance the PSO in exploring the solution space more effectively for a better solution. A suite of benchmark test functions and three industrial applications (solving the load flow problems, modeling the development of fluid dispensing for electronic packaging, and designing a neural-network-based controller) are employed to evaluate the performance and the applicability of the proposed method. Experimental results empirically show that the proposed method significantly outperforms the existing methods in terms of convergence speed, solution quality, and solution stability. © 2008 IEEE.

Ling, SH, Iu, HHC, Leung, FHF & Chan, KY 2008, 'Improved hybrid particle swarm optimized wavelet neural network for Modeling the development of Fluid Dispensing for Electronic Packaging', IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, vol. 55, no. 9, pp. 3447-3460.
View/Download from: Publisher's site
View description>>

An improved hybrid particle swarm optimization (PSO)-based wavelet neural network (WNN) for Modeling the development of Fluid Dispensing for Electronic Packaging (MFD-EP) is presented in this paper. In modeling the fluid dispensing process, it is important to understand the process behavior as well as determine the optimum operating conditions of the process for a high-yield, low-cost, and robust operation. Modeling the fluid dispensing process is a complex nonlinear problem. This kind of problem is suitable to be solved by applying a neural network. Among the different kinds of neural networks, the WNN is a good choice to solve the problem. In the proposed WNN, the translation parameters are variables depending on the network inputs. Due to the variable translation parameters, the network becomes an adaptive one that provides better performance and increased learning ability than conventional WNNs. An improved hybrid PSO is applied to train the parameters of the proposed WNN. The proposed hybrid PSO incorporates a wavelet-theory-based mutation operation. It applies the wavelet theory to enhance the PSO in more effectively exploring the solution space to reach a better solution. A case study of MFD-EP is employed to demonstrate the effectiveness of the proposed method. © 2008 IEEE.

López-Mariscal, C, Burnham, D, Rudd, D, McGloin, D & Gutiérrez-Vega, JC 2008, 'Phase dynamics of continuous topological upconversion in vortex beams', Optics Express, vol. 16, no. 15, pp. 11411-11411.
View/Download from: Publisher's site

Lu, DD-C, Iu, HH-C & Pjevalica, V 2008, 'A Single-Stage AC/DC Converter With High Power Factor, Regulated Bus Voltage, and Output Voltage', IEEE Transactions on Power Electronics, vol. 23, no. 1, pp. 218-228.
View/Download from: Publisher's site

McGloin, D 2008, 'Manipulating Aerosols with Light', Imaging & Microscopy, vol. 10, no. 2, pp. 50-52.
View/Download from: Publisher's site

McGloin, D, Burnham, DR, Summers, MD, Rudd, D, Dewar, N & Anand, S 2008, 'Optical manipulation of airborne particles: techniques and applications', Faraday Discuss., vol. 137, pp. 335-350.
View/Download from: Publisher's site

Ngo, D, Tuan, H & Nguyen, H 2008, 'Jointly Optimal Signature Sequences and Power Allocation for CDMA Systems', IEEE Transactions on Wireless Communications, vol. 7, no. 11, pp. 4122-4127.
View/Download from: Publisher's site
View description>>

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. Taking the maximization of the system information-theoretic

Nguyen, DHN, Nguyen, HH & Hoang, TD 2008, 'High-Rate Space-Time Block Coding Schemes', IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, vol. E91A, no. 11, pp. 3393-3397.
View/Download from: Publisher's site

Novak, A, Taylor, P & Veitch, D 2008, 'Corrigendum to “The distribution of the number of arrivals in a subinterval of a busy period of a single server queue”', Queueing Systems, vol. 59, pp. 87-93.

Novak, A, Taylor, P & Veitch, D 2008, 'Corrigendum to “The distribution of the number of arrivals in a subinterval of a busy period of a single server queue”', Queueing Systems, vol. 59, no. 2, pp. 87-93.
View/Download from: Publisher's site

Paisitkriangkrai, S, Chunhua Shen & Jian Zhang 2008, 'Fast Pedestrian Detection Using a Cascade of Boosted Covariance Features', IEEE Transactions on Circuits and Systems for Video Technology, vol. 18, no. 8, pp. 1140-1151.
View/Download from: Publisher's site
View description>>

Efficiently and accurately detecting pedestrians plays a very important role in many computer vision applications such as video surveillance and smart cars. In order to find the right feature for this task, we first present a comprehensive experimental s

Paisitkriangkrai, S, Shen, C & Zhang, J 2008, 'Performance evaluation of local features in human classification and detection', IET Computer Vision, vol. 2, no. 4, pp. 236-236.
View/Download from: Publisher's site
View description>>

Detecting pedestrians accurately is the first fundamental step for many computer vision applications such as video surveillance, smart vehicles, intersection traffic analysis and so on. The authors present an experimental study on pedestrian detection us

Phat, VN & Ha, QP 2008, 'New characterization of controllability via stabilizability and Riccati equation for LTV systems', IMA JOURNAL OF MATHEMATICAL CONTROL AND INFORMATION, vol. 25, no. 4, pp. 419-429.
View/Download from: Publisher's site
View description>>

This paper presents a new characterization of controllability via stabilizability and Riccati equation for linear time-varying systems. An equivalence is given between the global null controllability, complete stabilizability and the existence of the sol

Qin, P-Y, Liang, C-H, Wu, B & Su, T 2008, 'Novel Dual-Mode Bandpass Filter with Transmission Zeros using Substrate Integrated Waveguide Cavity', Journal of Electromagnetic Waves and Applications, vol. 22, no. 5-6, pp. 723-730.
View/Download from: Publisher's site

Ridoux, J & Veitch, D 2008, 'The cost of variability', 2008 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control and Communication, pp. 29-32.
View/Download from: Publisher's site

Ritz, CH, Schiemer, G, Burnett, IS, Cheng, E, Lock, D, Narushima, T, Ingham, S & Wood Conroy, D 2008, 'An Anechoic Configurable Hemispheric Environment for Spatialised Sound', Proceedings of the Australasian Computer Music Conference 2008, pp. 65-68.

Rudd, D, López-Mariscal, C, Summers, M, Shahvisi, A, Gutiérrez-Vega, JC & McGloin, D 2008, 'Fiber based optical trapping of aerosols', Optics Express, vol. 16, no. 19, pp. 14550-14550.
View/Download from: Publisher's site

Summers, MD, Burnham, DR & McGloin, D 2008, 'Trapping solid aerosols with optical tweezers: A comparison between gas and liquid phase optical traps', Optics Express, vol. 16, no. 11, pp. 7739-7739.
View/Download from: Publisher's site

Sun, Q-F, Dai, M-Y, Chen, W, Ding, J-G, Ni, W & Xu, D-Z 2008, '[The relationship between T cell subsets and secondary bacterial infection and prognosis of patients with chronic severe hepatitis B].', Zhonghua Gan Zang Bing Za Zhi, vol. 16, no. 2, pp. 146-147.

Thomas-Kerr, J, Burnett, I & Ritz, C 2008, 'Format-Independent Rich Media Delivery Using the Bitstream Binding Language', IEEE Transactions on Multimedia, vol. 10, no. 3, pp. 514-522.
View/Download from: Publisher's site

Tran, NN, Tuan, HD & Nguyen, HH 2008, 'Training Signal and Precoder Designs for OFDM Under Colored Noise', IEEE Transactions on Vehicular Technology, vol. 57, no. 6, pp. 3911-3917.
View/Download from: Publisher's site
View description>>

Based on convex programming, this paper presents a new training signal design for orthogonal frequency-division multiplexing (OFDM) under colored Gaussian noise. An effective method for OFDM symbol detection with the use of precoding is also described. B

Wang, H, He, X, Hintz, T & Wu, Q 2008, 'Fractal Image Compression on Hexagonal Structure', Journal of Algorithms & Computational Technology, vol. 2, no. 1, pp. 79-98.
View/Download from: Publisher's site
View description>>

Fractal image compression (FIC) is a relatively recent image compression method. Its basic idea is to represent images as a fixed point of a contractive Iterated Function System (IFS). Spiral Architecture (SA) is a novel hexagonal image structure on which images are displayed as a collection of hexagonal pixels. The efficiency and accuracy of image processing on SA have been demonstrated in many recently published papers. In this paper, two presentations of SA on the traditional display device will be discussed. Then we will review the current research work on fractal image compression based on SA using both presentations. The FIC performance on SA will be compared with it on the traditional square structure in terms of compression ratio and PSNR. In the experimental results, higher PSNR values can be achieved at various compression ratios for all test images. The preliminary research on this direction has shown a promising future of applying FIC on SA to further improve the compression performance.

Weily, AR, Bird, TS & Guo, YJ 2008, 'A Reconfigurable High-Gain Partially Reflecting Surface Antenna', IEEE Transactions on Antennas and Propagation, vol. 56, no. 11, pp. 3382-3390.
View/Download from: Publisher's site
View description>>

A high-gain partially reflective surface (PRS) antenna with a reconfigurable operating frequency is presented. The operating frequency is electronically tuned by incorporating an array of phase agile reflection cells on a thin substrate above the ground plane of the resonator antenna, where the reflection phase of each cell is controlled by the bias voltage applied to a pair of varactor diodes. The new configuration enables continuous tuning of the antenna from 5.2 GHz to 5.95 GHz using commercially available varactor diodes, thus covering frequencies typically used for WLAN applications. Both the PRS and phase agile cell are analyzed, and theoretical and measured results for gain, tuning range, and radiation patterns of the reconfigurable antenna are described. The effect of the varactor diode series resistance on the performance of the antenna is also reported. © 2008 IEEE.

Wong, K-YK, Guoqiang Zhang, Chen Liang & Hui Zhang 2008, '1D Camera Geometry and Its Application to the Self-Calibration of Circular Motion Sequences', IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 30, no. 12, pp. 2243-2248.
View/Download from: Publisher's site
View description>>

This paper proposes a novel method for robustly recovering the camera geometry of an uncalibrated image sequence taken under circular motion. Under circular motion, all the camera centers lie on a circle and the mapping from the plane containing this circle to the horizon line observed in the image can be modelled as a 1D projection. A 2×2 homography is introduced in this paper to relate the projections of the camera centers in two 1D views. It is shown that the two imaged circular points of the motion plane and the rotation angle between the two views can be derived directly from such a homography. This way of recovering the imaged circular points and rotation angles is intrinsically a multiple view approach, as all the sequence geometry embedded in the epipoles is exploited in the estimation of the homography for each view pair. This results in a more robust method compared to those computing the rotation angles using adjacent views only. The proposed method has been applied to self-calibrate turntable sequences using either point features or silhouettes, and highly accurate results have been achieved. © 2008 IEEE.

Wu, B, Liang, C-H, Qin, P-Y & Li, Q 2008, 'Compact Dual-Band Filter Using Defected Stepped Impedance Resonator', IEEE Microwave and Wireless Components Letters, vol. 18, no. 10, pp. 674-676.
View/Download from: Publisher's site

Wu, B, Qin, P, Li, Q & Liang, C 2008, 'Trisection cross‐coupled filter with symmetrical response using split‐ring resonator DGS', Microwave and Optical Technology Letters, vol. 50, no. 7, pp. 1774-1776.
View/Download from: Publisher's site
View description>>

AbstractIn this article, a novel trisection cross‐coupled filter with symmetrical response by using split‐ring resonator defected ground structure (SRR DGS) is presented. The SRR DGS is loaded at the bottom of a two‐pole microstrip SRR filter, then a compact trisection cross‐coupled filter with a pair of transmission zeros is obtained. A practical filter which has a center frequency of 1.4 GHz and a relative bandwidth of 14% is successfully designed and fabricated. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1774–1776, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23529

Xiangjian He, Wenjing Jia & Qiang Wu 2008, 'An approach of canny edge detection with virtual hexagonal image structure', 2008 10th International Conference on Control, Automation, Robotics and Vision, vol. 3, no. 1, pp. 133-143.
View/Download from: Publisher's site
View description>>

Gradient-based edge detection is a straightforward method to identify the edge points in the original grey-level image. It is intuitive that in the human vision system the edge points always appear where the grey-level value is greatly changed. Spiral Architecture is a relatively new image data structure that is inspired from anatomical considerations of the primate's vision. In Spiral Architecture, each image is represented as a collection of hexagonal pixels. Edge detection on Spiral Architecture has features of fast computation and accurate localization. In this paper, we present and compare gradient-based edge detection algorithms on Spiral Architecture. The experimental results show that the edge detection on Spiral Architecture outperforms that on traditional square image structure.

Xinying Liu, Shuhong Wang, Jie Qiu, Jian Guo Zhu, Youguang Guo & Zhi Wei Lin 2008, 'Robust Optimization in HTS Cable Based on Design for Six Sigma', IEEE Transactions on Magnetics, vol. 44, no. 6, pp. 978-981.
View/Download from: Publisher's site
View description>>

The nonuniform ac current distribution among the multilayer conductors in a high-temperature superconducting (HTS) cable reduces the current capacity and increases the ac loss. Various numerical simulation techniques and optimization methods have been applied in structural optimization of HTS cables. While the existence of fluctuation in design variables or operation conditions has a great influence on the cable quality, in order to eliminate the effects of parameter perturbations in design and to improve the design efficiency, a robust optimization method based on design for six sigma (DFSS) is presented in this paper. The optimization results show that the proposed optimization procedure can not only achieve a uniform current distribution, but also improve significantly the reliability and robustness of the HTS cable quality, comparing with those by using the particle swarm optimization. © 2008 IEEE.

Xiyin Liang, Jiangfeng Zhang & Xiaohua Xia 2008, 'Improving the Security of Chaotic Synchronization With a $\Delta$-Modulated Cryptographic Technique', IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 55, no. 7, pp. 680-684.
View/Download from: Publisher's site

Xu, M, Xu, C, Duan, L, Jin, JS & Luo, S 2008, 'Audio keywords generation for sports video analysis', ACM Transactions on Multimedia Computing, Communications, and Applications, vol. 4, no. 2, pp. 1-23.
View/Download from: Publisher's site
View description>>

Sports video has attracted a global viewership. Research effort in this area has been focused on semantic event detection in sports video to facilitate accessing and browsing. Most of the event detection methods in sports video are based on visual features. However, being a significant component of sports video, audio may also play an important role in semantic event detection. In this paper, we have borrowed the concept of the “keyword” from the text mining domain to define a set of specific audio sounds. These specific audio sounds refer to a set of game-specific sounds with strong relationships to the actions of players, referees, commentators, and audience, which are the reference points for interesting sports events. Unlike low-level features, audio keywords can be considered as a mid-level representation, able to facilitate high-level analysis from the semantic concept point of view. Audio keywords are created from low-level audio features with learning by support vector machines. With the help of video shots, the created audio keywords can be used to detect semantic events in sports video by Hidden Markov Model (HMM) learning. Experiments on creating audio keywords and, subsequently, event detection based on audio keywords have been very encouraging. Based on the experimental results, we believe that the audio keyword is an effective representation that is able to achieve satisfying results for event detection in sports video. Application in three sports types demonstrates the practicality of the proposed method.

XU, X, HAYASAKA, N & MIYANAGA, Y 2008, 'Robust Speech Spectra Restoration against Unspecific Noise Conditions for Pitch Detection', IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol. E91-A, no. 3, pp. 775-781.
View/Download from: Publisher's site

Yan, Y, Zhu, JG & Guo, YG 2008, 'Initial rotor position estimation and sensorless direct torque control of surface-mounted permanent magnet synchronous motors considering saturation saliency', IET Electric Power Applications, vol. 2, no. 1, pp. 42-48.
View/Download from: Publisher's site
View description>>

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

Yong Zhu, Lee, JE-Y & Seshia, AA 2008, 'A Resonant Micromachined Electrostatic Charge Sensor', IEEE Sensors Journal, vol. 8, no. 9, pp. 1499-1505.
View/Download from: Publisher's site

Yoshizawa, S & Miyanaga, Y 2008, 'Use of a Variable Wordlength Technique in an OFDM Receiver to Reduce Energy Dissipation', IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 55, no. 9, pp. 2848-2859.
View/Download from: Publisher's site

YOSHIZAWA, S, YAMAUCHI, Y & MIYANAGA, Y 2008, 'VLSI Implementation of a Complete Pipeline MMSE Detector for a 4 x 4 MIMO-OFDM Receiver', IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol. E91-A, no. 7, pp. 1757-1762.
View/Download from: Publisher's site

Youguang Guo, Jian Guo Zhu, Jinjiang Zhong, Haiyan Lu & Jian Xun Jin 2008, 'Measurement and Modeling of Rotational Core Losses of Soft Magnetic Materials Used in Electrical Machines: A Review', IEEE Transactions on Magnetics, vol. 44, no. 2, pp. 279-291.
View/Download from: Publisher's site
View description>>

In many situations, for example, in the cores of a rotating electrical machine and the T-joints of multiphase transformers, the magnetic flux varies with time in terms of both magnitude and direction, i.e., the local flux density vector rotates with varying magnitude and varying speed. Therefore, it is important that the magnetic properties of the core materials under various rotational magnetizations be properly investigated, modeled, and applied in the design and analysis of electromagnetic devices with rotational flux. Drawing from the huge amount of papers published by various researchers in the past century, this paper presents an extensive survey on the measurement and modeling of rotational core losses of soft magnetic materials used in electrical machines, particularly from the view of practical engineering application. The paper aims to provide a broad picture of the historical development of measuring techniques, measuring apparatus, and practical models of rotational core losses. © 2008 IEEE.

Zhan, Y, Guo, Y, Zhu, J & Wang, H 2008, 'Intelligent uninterruptible power supply system with back-up fuel cell/battery hybrid power source', Journal of Power Sources, vol. 179, no. 2, pp. 745-753.
View/Download from: Publisher's site
View description>>

This paper presents the development of an intelligent uninterruptible power supply (UPS) system with a hybrid power source that comprises a proton-exchange membrane fuel cell (PEMFC) and a battery. Attention is focused on the architecture of the UPS hybr

Zhao, Y, Milne, G, Edgar, JS, Jeffries, GDM, McGloin, D & Chiu, DT 2008, 'Quantitative force mapping of an optical vortex trap', Applied Physics Letters, vol. 92, no. 16, pp. 161111-161111.
View/Download from: Publisher's site
View description>>

This paper describes the quantitative force mapping of micron-sized particles held in an optical vortex trap. We present a simple and efficient model, which accounts for the diffraction of the strongly localized optical field of the tightly focused laser beam, the spherical aberration introduced by the dielectric glass-to-water interface, employs the multidipole approximation for force calculations, and is able to reproduce, with quantitative agreement, the experimentally measured force map.

Abolhasan, M, Hagelstein, B, Wang, JC-P, Franklin, DR, Safaei, F & Wysocki, T 1970, 'Development and Performance Evaluation of a Flexible, Low Cost MANET', ICSPCS: 2ND INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION SYSTEMS, PROCEEDINGS, 2nd International Conference on Signal Processing and Communication Systems, IEEE, Gold Coast, AUSTRALIA, pp. 107-112.

Abolhasan, M, Hagelstein, B, Wang, JC-P, Franklin, DR, Safaei, F & Wysocki, T 1970, 'Development and performance evaluation of a flexible, low cost MANET', 2008 2nd International Conference on Signal Processing and Communication Systems, 2008 2nd International Conference on Signal Processing and Communication Systems (ICSPCS 2008), IEEE, Gold coast, Australia, pp. 1-6.
View/Download from: Publisher's site
View description>>

Performance evaluations of multi-hop ad hoc network routing protocols have been primarily conducted through analytic and simulation-based studies, which frequently fail to accurately predict real-world performance and behaviour. One reason for this is the challenge in developing low cost, representative test beds with the degree of flexibility and mobility required. We have developed a portable wireless ad hoc node (PWAN) device which establishes multi-hop routes using the OLSR routing protocol. The PWAN's performance has been investigated using two test bed configurations to evaluate its capacity under conditions of high node density in a short-range, multi-hop environment. Our results illustrate that such networks are capable of providing high quality connections when traffic density is low. However, the network link quality deteriorates dramatically as the traffic level increases, and the network topology becomes unstable until the traffic level is reduced.

Adistambha, K, Ritz, CH & Burnett, IS 1970, 'Motion classification using Dynamic Time Warping', 2008 IEEE 10th Workshop on Multimedia Signal Processing, 2008 IEEE 10th Workshop on Multimedia Signal Processing (MMSP), IEEE, pp. 622-627.
View/Download from: Publisher's site
View description>>

Automatic generation of metadata is an important component of multimedia search-by-content systems as it both avoids the need for manual annotation as well as minimising subjective descriptions and human errors. This paper explores the automatic attachment of basic descriptions (or 'Tags') to human motion held in a motion-capture database on the basis of a Dynamic Time Warping (DTW) approach. The captured motion is held in the Acclaim ASF/AMC format commonly used in game and movie motion capture work and the approach allows for the comparison and classification of motion from different subjects. The work analyses the bone rotations important to a small set of movements and results indicate that only a small set of examples is required to perform reliable motion classification. © 2008 IEEE.

Adistambha, K, Ritz, CH & Burnett, IS 1970, 'Motion Classification Using Dynamic Time Warping', 2008 IEEE 10TH WORKSHOP ON MULTIMEDIA SIGNAL PROCESSING, VOLS 1 AND 2, 10th IEEE Workshop on Multimedia Signal Processing, IEEE, AUSTRALIA, Cairns, pp. 626-+.

Aguilera, RP, Quevedo, DE, Summers, TJ & Lezana, P 1970, 'Predictive control algorithm robustness for achieving fault tolerance in multicell converters', 2008 34th Annual Conference of IEEE Industrial Electronics, IECON 2008 - 34th Annual Conference of IEEE Industrial Electronics Society, IEEE, pp. 3302-3308.
View/Download from: Publisher's site
View description>>

Multilevel Converters (MCs) have emerged as a promising alternative to traditional two level converters. MCs use an arrangement of several semiconductors to synthesize high quality output voltage levels. Unfortunately, as a consequence of using more switching elements, MCs are, in general, more likely to be affected by faults, than their two level counterparts. In this paper, we propose a finite set constrained predictive control method for MCs, which is aimed at achieving robustness to failures in the semiconductors. We focus on three-phase multicell flying capacitor converters and show that, by carefully designing switching sequences, faults can be isolated from measurements provided by a single voltage sensor per phase. When faults occur, the proposed controller reconfigures the converter to provide to the load voltages which are similar to those obtained under normal, i.e., fault free, operating conditions. © 2008 IEEE.

Ahmad, MR, Dutkiewicz, E & Huang, X 1970, 'MAC Protocol for Cooperative MIMO Transmissions in Asynchronous Wireless Sensor Networks', 2008 INTERNATIONAL SYMPOSIUM ON COMMUNICATIONS AND INFORMATION TECHNOLOGIES, International Symposium on Communication and Information Technologies, IEEE, Vientiane, LAOS, pp. 579-+.

Ahmad, MR, Dutkiewicz, E & Huang, X 1970, 'MAC Protocol for Cooperative MIMO Transmissions in Asynchronous Wireless Sensor Networks', 2008 International Symposium on Communications and Information Technologies, 2008 International Symposium on Communications and Information Technologies (ISCIT), IEEE, pp. 580-585.
View/Download from: Publisher's site
View description>>

Cooperative MIMO schemes can reduce both transmission energy and latency in distributed wireless sensor networks (WSNs). In this paper we develop a new Cooperative low power listening (LPL) Medium Access Control (MAC) protocol for two cooperative MIMO schemes: Optimal Beamforming (BF) and Spatial Multiplexing (SM). We develop analytical models for the total energy consumption and packet latency for both schemes and analyse the proposed MAC protocol in term of the total energy consumption and packet latency with imperfect synchronisation due to clock jitter. The impact of the clock jitter, the check interval and the number of cooperative nodes on the total energy consumption and latency are investigated. We observe that the Cooperative LPL MAC with Optimal BF is the most promising configuration and it is optimal when then number of co-operating nodes M=2 and jitter difference is below 0.6Tb. © 2008 IEEE.

Ahmad, MR, Dutkiewicz, E & Huang, X 1970, 'Performance evaluation of MAC protocols for cooperative MIMO transmissions in sensor networks', Proceedings of the 5th ACM symposium on Performance evaluation of wireless ad hoc, sensor, and ubiquitous networks, MSWiM '08: The 11th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems, ACM, Vancouver, CANADA, pp. 54-62.
View/Download from: Publisher's site

Ahmad, MR, Dutkiewicz, E & Xiaojing 1970, 'Performance analysis of MAC protocol for cooperative MIMO transmissions in WSN', 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), IEEE, Cannes, FRANCE, pp. 1929-+.
View/Download from: Publisher's site

Arya, V, Duffield, NG & Veitch, D 1970, 'Temporal Delay Tomography', 2008 Proceedings IEEE INFOCOM - The 27th Conference on Computer Communications, 27th IEEE International Conference on Computer Communications (INFOCOM 2008), IEEE, IEEE.
View/Download from: Publisher's site

Balasubramanian, V, Hoang, DB & Ahmad, NF 1970, 'SOAP based Assistive Care Loop using Wireless Sensor Networks', 2008 IEEE INTERNATIONAL SYMPOSIUM ON IT IN MEDICINE AND EDUCATION, VOLS 1 AND 2, PROCEEDINGS, International Symposium on IT in Medicine and Education, IEEE, Xiamen, China, pp. 409-414.
View/Download from: Publisher's site
View description>>

There is a growing trend towards in-house health monitoring system. It is now feasible to place a Personal Digital Assistant (PDA) or smart phone in the hands of care-delivery staff and the patients regardless of where they are located or what their duties might be. In such instance, the staff would be able to access records and communicate with patients in a flexible and cost effective way. This paper proposes an Active Care Loop Framework (ACLF). The strength of our ACLF is to monitor disease over longer period of time and to consult patient who are then able to discuss their conditions with the care staff. Where patients need emergency intervention, an assistive health monitoring system can provide a direct communication channel to summon assistance and to enable with managing the situation until the assistance arrives. With a regular schedule of monitoring and consultation, the assistive ACLF has the capacity to forestall and manage non-critical situations and therefore the system can be deployed to minimize the rate and costs of hospitalizations. © 2008 Crown.

Binh Nguyen Thanh & Hoang, DB 1970, 'Building a Plan-supported Grid Collaborative Framework', 2008 Second International Conference on Communications and Electronics, Second International Conference on Communications and Electronics, IEEE, HoiAn, Vietnam, pp. 150-156.
View/Download from: Publisher's site
View description>>

Grid infrastructure for resources sharing is somewhat stable with the wide acceptance of the open grid services Architecture (OGSA) and web services resource framework (WSRF), but grid framework for collaboration is far from desired. Current grid collaborative frameworks (GCFs) are domain specific and lack of plan-supported capacity. These limitations make them less useful and narrow in scope of application. This paper describes a grid collaborative framework that is both general purpose and plan supported. With the theoretical foundation based on the activity theory and designed on top of existing OGSA infrastructure, our proposed framework aims at accelerating the development of grid collaborative systems that consider working plans as central role.

Burnham, DR, Reece, P, López Mago, D, Gutiérrez-Vega, JC & McGloin, D 1970, 'Dynamics of airborne tweezing', SPIE Proceedings, NanoScience + Engineering, SPIE, San Diego, CA.
View/Download from: Publisher's site

Cajote, RD, Aramvith, S, Guevara, RCL & Miyanaga, Y 1970, 'Improved Sorting Algorithm for Explicit FMO Macroblock Classification in H.264', 2008 International Symposium on Communications and Information Technologies, 2008 International Symposium on Communications and Information Technologies (ISCIT), IEEE.
View/Download from: Publisher's site

Cajote, RD, Aramvith, S, Guevara, RCL & Yoshikazu Miyanaga 1970, 'FMO slice group maps using spatial and temporal indicators for H.264 wireless video transmission', 2008 IEEE International Symposium on Circuits and Systems (ISCAS), 2008 IEEE International Symposium on Circuits and Systems (ISCAS), IEEE.
View/Download from: Publisher's site

Chaczko, Z, Klempous, R, Nikodem, J & Szymanski, J 1970, 'Applications of Cooperative WSN in Homecare Systems', 2008 Third International Conference on Broadband Communications, Information Technology & Biomedical Applications, 2008 Third International Conference on Broadband Communications, Information Technology & Biomedical Applications, IEEE, Pretoria, Gauteng, South Africa, pp. 215-220.
View/Download from: Publisher's site
View description>>

Cooperation plays the crucial role in shared space of the homecare processes. It is a rather hard task to ensure effective cooperation in home care environment. This is due to variability of schedules, tasks and mobility of both patients and carers. In this paper, we discuss sensor network technology that can facilitate and improve home care cooperation scenarios. We present methodology, recommendations and applications for incorporating a WSN based solution in various areas of Homecare. We argue that even the most difficult areas of cooperation between patients and their carers such as: information retrieval, information dissemination, scheduling, coordination of short and long-term treatment can be supported by WSN based solutions. Finally, we discuss sensor network design approaches for incorporating smart communication devices and sensors to support health care workers and their patients in their daily activities. The network of smart sensors can help to maintain awareness of the activities of all stakeholders and the need to integrate communication and computer technology with the requirements of effective aged care infrastructure.

Chaczko, Z, Mahadevan, V & Nikodem, J 1970, 'A Bio-inspired Telecollaboration Service Taxonomy: Usability Related Concerns', 2008 Third International Conference on Broadband Communications, Information Technology & Biomedical Applications, 2008 Third International Conference on Broadband Communications, Information Technology & Biomedical Applications, IEEE, Pretoria, Gauteng, South Africa, pp. 209-214.
View/Download from: Publisher's site
View description>>

As the Internet is transforming the global information economy, the Telecollaboration (TC) system services are moving at a transitional pace dictated by market forces. However, the pace is turning out to be a lot slower than expected. This has prompted us now to approximate and synthesize the design concepts of building a scalable biomimetic system manager for a telecollaboration service taxonomy. Thus, it is expected that if there is more correlation across the design concepts of the system manager, the greater will be the likelihood of demonstrating a rescue-like operation for humans in this new taxonomy. The main goal of this paper is initially to over view the bio-swarm behaviours of insect colonies to embrace a notional computing architecture that enables an individual TC service entity. It is important that these behaviours along with the proposed self-x autonomic functions offered by the system manager need to be pursued, and indeed continue, in a highly correlated way to fulfil the opportunistic functional tasks related to the discovery and delivery of Telecollaboration services. In this context next, we attempt to study the significant usability benefits of qualitative and quantitative execution pressures related to the implementation of these functions. This includes a better understanding of the constraints of implementation of these functions to deal with complex usability performance baselines. Finally, we give an updated foresight of process deployment strategies through a group of highly diverse and autonomous objects called Teleholons whilst exploiting the role of these self-x autonomic functions.

Chan, A, Chaczko, Z, Chiu, C & Zielinski, R 1970, 'File Compression Using Typogenetic Computation.', BroadCom, International Conference of Broadband Communication, Information Technology and Biomedical Applications, IEEE Computer Society, Pretoria, Gauteng, South Africa, pp. 202-208.
View/Download from: Publisher's site
View description>>

Typogenetic algorithms are a break from classical approaches to computation. Based on gene expression and intercellular processes, typo-genetic computation can offer a new approach to the algorithmic problems of system security, data compression and encryption. The method has a potential of much higher compression ratios at the limited computational costs i.e. processing time. This paper presents a formal system based on typogenetics for the purposes of compression. Lossless data compression is an important part of computer science. While the ability to reduce consumption of hard disk space or transmission bandwidth through statistical redundancy has served well in the past, the explosive growth in high quality media content (*.mp3, *.mpg) on the internet in the past few years have highlighted the limitations of traditional statistical techniques for compression.

Chen, G, Chen, J, Guo, Y & Zhu, J 1970, 'Synthetic design of the transformer in flyback switching AC-DC converters', Proceedings of the 11th International Conference on Electrical Machines and Systems, ICEMS 2008, World Publishing Corporation, Wuhan, China, pp. 1871-1874.
View description>>

This paper presents the synthetic design of the transformer in flyback switching AC-DC converters. Firstly, the maximal power transferred by a standard size magnetic core such as EE-20 or EE-25 is theoretically determined. To obtain accurate analysis, a method based on the nonlinear finite element analysis (FEA) of electromagnetic field is employed. Secondly, from the view of reducing the maximal magnetic flux density in the transformer with the same power, it is proved that the discontinuous conducting mode has more advantages than the continuous conducting mode. Several rules for designing the transformer are presented. As an example, the transformer of an existing converter is re-designed by using the proposed approach. With a nonlinear 2-D FEA field-circuit coupled switching detailed model built in Matlab/Simulink surrounding, the performance of the new converter is obtained.

Chen, J, Chen, G, Guo, Y & Zhu, J 1970, 'Comprehensive analysis of power loss in the output diode of flyback switching converter operating in DCM and CCM', Proceedings of the 11th International Conference on Electrical Machines and Systems, ICEMS 2008, International Conference on Electrical Machines and Systems, World Publishing Corporation, Wuhan, China, pp. 1865-1870.
View description>>

This paper analyzes the maximal power loss in the output diode of flyback switching converter operating in both continuous conducting mode (CCM) and discontinuous conducting mode (DCM). Comparing with the previous work, this paper extends the condition, under which the maximal power loss of the output diode occurs, from the CCM to the DCM. Three correlative tasks are included. Firstly, through an analytical analysis, the condition under which the maximal power is consumed by the output diode is obtained. Secondly, to verify the analytical analysis and acquire more accurate results, based on nonlinear finite element analysis, a detailed field-circuit indirect coupling model of flyback switching AC to DC converter is built, where several nonlinear factors such as the saturation of magnetic ferrite core, control delay and switching characteristic are included. Finally, the above analysis results are applied to control the maximal power loss in the output diode of flyback switching AC-DC converter to be an approximate minimum; this would improve the converter reliability and power efficiency.

Chen, X, Jin, J, Guo, Y & Zhu, J 1970, 'Design and analysis of a 10 kVA HTS transformer', Proceedings of the 11th International Conference on Electrical Machines and Systems, ICEMS 2008, 11th International Conference on Electrical Machines and Systems, WORLD PUBLISHING CORPORATION, Huazhong Univ Sci & Technol, Wuhan, PEOPLES R CHINA, pp. 4302-4304.
View description>>

With the improvement of high temperature superconductor (HTS) practical performance, research and development concerning the applications of HTS transformers have been progressed actively in the world. This work presents a single-phase 10 kVA (220V/24V) HTS transformer prototype design to validate HTS for practical transformer applications. The physical designs of the HTS transformer and 2-D electromagnetic analysis have been presented in the paper. A LabVIEW-based test and control system has also been developed to form a whole HTS transformer system.

Chen, X, Jin, J, Guo, Y & Zhu, J 1970, 'Prototype Design of a 10 kVA HTS Transformer', Proceedings of the 11th International Conference on Electrical Machines and Systems (ICEMS), ICEMs2008, World Publishing Corporation, Wuhan, China, pp. 4302-4304.
View description>>

With the improvement of high temperature superconductor (HTS) practical performance, research and development concerning the applications of HTS transformers have been progressed actively in the world. This work presents a single-phase 10 kVA (220 V/24 V) HTS transformer prototype design to validate HTS for practical transformer applications. The physical designs of the HTS transformer and 2-D electromagnetic analysis have been presented in the paper. A LabVIEW-based test and control system has also been developed to form a whole HTS transformer system.

Chen, Y, Hong, Q, Chen, X & Zhang, C 1970, 'Real-Time Speaker Verification Based on GMM-UBM for PDA', 2008 Fifth IEEE International Symposium on Embedded Computing, 2008 Fifth IEEE International Symposium on Embedded Computing (SEC), IEEE.
View/Download from: Publisher's site

Chen, Y, Wu, Q & He, X 1970, 'Human Action Recognition by Radon Transform', 2008 IEEE International Conference on Data Mining Workshops, 2008 IEEE International Conference on Data Mining Workshops (ICDMW), IEEE, Pisa, Italy, pp. 862-868.
View/Download from: Publisher's site
View description>>

A new feature description is used for human behaviour representation and recognition. The feature is based on Radon transforms of extracted silhouettes. Key postures are selected based on the Radon transform. Key postures are combined to construct an action template for each sequence. Linear Discriminant Analysis (LDA) is applied to the set of key postures to obtain low dimensional feature vectors. Different classification methods are used to classify each sequence. Experiments are carried out based on a publically available human behaviour database and the results are exciting. © 2008 IEEE.

Chen, Y, Wu, Q & He, X 1970, 'Motion Based Pedestrian Recognition', 2008 Congress on Image and Signal Processing, 2008 Congress on Image and Signal Processing, IEEE, Sanya, China, pp. 376-380.
View/Download from: Publisher's site
View description>>

This paper proposed a method for discriminating pedestrians from rigid objects in a video. The method is a motion-based recognition of moving objects. This method is motivated by the assumptions that human beings are non-rigid and their movements are periodic. Moving objects and their skeletons are extracted. The motion cue is determined by the angle formed by the centroid point and the two bottom end points at object's skeleton. The histogram of the cue over a time period is used to determine if the object is pedestrian or not. This cue does not require any pre-built models. Neither does it need Fourier Transform to obtain the cycle of the objects. The proposed method is computation inexpensive, and it can be used for real-time video surveillance. ©2008 IEEE.

Chen, Y, Wu, Q & He, X 1970, 'Using dynamic programming to match human behavior sequences', 2008 10th International Conference on Control, Automation, Robotics and Vision, 2008 10th International Conference on Control, Automation, Robotics and Vision (ICARCV), IEEE, Hanoi, Vietnam, pp. 1498-1503.
View/Download from: Publisher's site
View description>>

This paper proposed a new approach for recognition and matching the human behavior sequence. Each human behavior sequence is represented by its key postures to greatly reduce the computation time. Normalization is applied to all the behavior sequences key postures for matching. A dynamic time warping (DTW) algorithm is used to perform the alignment of two time series. Experiments are carried out on an open human behavior database and exciting results have been obtained. © 2008 IEEE.

Chen, Y, Wu, Q, He, X, Du, C & Yang, J 1970, 'Extracting key postures in a human action video sequence', 2008 IEEE 10th Workshop on Multimedia Signal Processing, 2008 IEEE 10th Workshop on Multimedia Signal Processing (MMSP), IEEE, Cairns, Queensland, Australia, pp. 569-573.
View/Download from: Publisher's site
View description>>

Human key posture extraction from videos will benefit video storage, video retrieval, human action recognition, human behaviour understanding and so on. This paper presents an approach to select key postures from human action sequences using 2D information. There are two steps in the proposed method. Information measurement which is a kind of global feature of a frame is used to roughly find key posture candidates. Then, a body skeleton feature which is a kind of local feature is applied to select final key postures from the candidates obtained in the first step. The experiments show that the proposed method is efficient. © 2008 IEEE.

Chen, Y, Wu, Q, He, X, Du, C & Yang, T 1970, 'Extracting Key Postures in a Human Action Video Sequence', 2008 IEEE 10TH WORKSHOP ON MULTIMEDIA SIGNAL PROCESSING, VOLS 1 AND 2, 10th IEEE Workshop on Multimedia Signal Processing, IEEE, Cairns, AUSTRALIA, pp. 573-+.

Cheng, B, Ritz, C & Burnett, I 1970, 'A Spatial Squeezing approach to Ambisonic audio compression', 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2008 - 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, IEEE, Las Vegas, NV, pp. 369-372.
View/Download from: Publisher's site

Cheng, B, Ritz, CH & Burnett, IS 1970, 'Binaural reproduction of Spatially Squeezed Surround Audio', 2008 9th International Conference on Signal Processing, 2008 9th International Conference on Signal Processing (ICSP 2008), IEEE, Beijing, PEOPLES R CHINA, pp. 506-+.
View/Download from: Publisher's site

Cheng, E, Burnett, IS & Ritz, CH 1970, 'Multivariate autoregressive modelling of multichannel reverberant speech', 2008 IEEE 10th Workshop on Multimedia Signal Processing, 2008 IEEE 10th Workshop on Multimedia Signal Processing (MMSP), IEEE, pp. 945-949.
View/Download from: Publisher's site
View description>>

Recent research in speech localization and dereverberation introduced processing of the multichannel linear prediction (LP) residual of speech recorded with multiple microphones. This paper investigates the novel use of intra- and inter-channel speech prediction by proposing the use of a multichannel LP model derived from multivariate autoregression (MVAR), where current LP approaches are based on univariate autoregression (AR). Experiments were conducted on simulated anechoic and reverberant synthetic speech vowels and real speech sentences; results show that, especially at low reverberation times, the MVAR model exhibits greater prediction gains from the residual signal, compared to residuals obtained from univariate AR models for individually or jointly modelled speech channels. In addition, the MVAR model more accurately models the speech signal when compared to univariate LP of a similar prediction order and when a smaller number of microphones are deployed. © 2008 IEEE.

Cheng, E, Burnett, IS & Ritz, CH 1970, 'Multivariate Autoregressive Modelling of Multichannel Reverberant Speech', 2008 IEEE 10TH WORKSHOP ON MULTIMEDIA SIGNAL PROCESSING, VOLS 1 AND 2, 10th IEEE Workshop on Multimedia Signal Processing, IEEE, Cairns, AUSTRALIA, pp. 949-+.

Cheng, E, Cheng, B, Ritz, C & Burnett, IS 1970, 'Spatialized Teleconferencing: Recording and `Squeezed' Rendering of Multiple Distributed Sites', 2008 Australasian Telecommunication Networks and Applications Conference, 2008 Australasian Telecommunication Networks and Applications Conference (ATNAC), IEEE, Adelaide, AUSTRALIA, pp. 411-+.
View/Download from: Publisher's site

Cheng, TM, Savkin, AV, Celler, BG, Su, SW & Wang, L 1970, 'Heart Rate Regulation During Exercise with Various Loads: Identification and Nonlinear H∞ Control', IFAC Proceedings Volumes, IFAC World Congress, Elsevier BV, Seoul, Korea, pp. 11618-11623.
View/Download from: Publisher's site
View description>>

A model for the heart rate response to treadmill walking exercise is proposed in this paper. The parameters of the model were experimentally identified which involved subjects walking at different speeds. A 2-degree-of-freedom controller was then developed for the regulation of the heart rate response during treadmill exercise. The controller consists of a piecewise LQ and an Hâ sub-controllers. Experimental results demonstrated that the heart rate of the subjects were regulated by the proposed controller.

Cheng, TM, Savkin, AV, Celler, BG, Su, SW & Wang, L 1970, 'Nonlinear modelling and control of heart rate response to treadmill walking exercise', BIOSIGNALS 2008: PROCEEDINGS OF THE FIRST INTERNATIONAL CONFERENCE ON BIO-INSPIRED SYSTEMS AND SIGNAL PROCESSING, VOL II, International Conference on Bio-inspired Systems and Signal Processing, Institute for Systems and Technologies of Information, Madeira, Portugal, pp. 498-503.
View description>>

In this study, a nonlinear system was developed for the modelling of the heart rate response to treadmill walking exercise. The model is a feedback interconnected system which can represent the neural response and peripheral local response to exercise. The parameters of the model were identified from an experimental study which involved 6 healthy adult male subjects, each completed 3 sets of walking exercise at different speeds. The proposed model will be useful in explaining the cardiovascular response to exercise. Based on the model, a 2-degree-of-freedom controller was developed for the regulation of the heart rate response during exercise. The controller consists of a piecewise LQ and an H infinity controllers. Simulation results showed that the proposed controller had the ability to regulate heart rate at a given target, indicating that the controller can play an important role in the design of exercise protocols for individuals.

Cheng, TM, Savkin, AV, Su, SW, Celler, BG, Wang, L & IEEE 1970, 'A robust control design for heart rate tracking during exercise', 2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Vols 1-8, IEEE Engineering in Medicine and Biology Society Annual Conference, IEEE, Vancouver, Canada, pp. 2785-2788.
View/Download from: Publisher's site
View description>>

In this study, a control design is proposed for the tracking control of heart rate response during treadmill exercise. The controller tracks an exerciserâs heart rate to a given heart rate profile, that may represent a prescribed exercise protocol, by varying the speed of the treadmill. A guaranteed cost control approach is adopted in the control design so that the controller guarantees a certain level of performance. The effectiveness of the proposed control design is demonstrated via a simulation study. The controller will be useful in the design of exercise protocols for individuals.

Chunhua Du, Qiang Wu, Jie Yang & Zheng Wu 1970, 'SVM based ASM for facial landmarks location', 2008 8th IEEE International Conference on Computer and Information Technology, 2008 8th IEEE International Conference on Computer and Information Technology (CIT), IEEE, Sydney, Australia, pp. 321-326.
View/Download from: Publisher's site
View description>>

Finding a new position for each landmark is a crucial step in active shape model (ASM). Mahalanobis distance minimization is used for this finding, provided there are enough training data such that the grey-level profiles for each landmark follow a multivariate Gaussian distribution. However, this condition could not be satisfied in most cases. In this paper, a new method support vector machine (SVM) based ASM (SVMBASM) is proposed. It approaches the finding task as a small sample size classification problem, and uses SVM classifier to deal with this problem. Moreover, considering imbalanced dataset which contains more negative instances(incorrect candidates for new position) than positive instances(correct candidates for new position), a multi-class classification framework is adopted. Performance evaluation on SJTU face database show that the proposed SVMBASM outperforms the original ASM in terms of the average error as well as the average frequency of convergence. © 2008 IEEE.

Cordero, M-L, Burnham, DR, Baroud, CN & McGloin, D 1970, 'Holographic control of droplet microfluidics', SPIE Proceedings, NanoScience + Engineering, SPIE, San Diego, CA.
View/Download from: Publisher's site

da Xu, RY 1970, 'A Computer Vision based Whiteboard Capture System', 2008 IEEE Workshop on Applications of Computer Vision, 2008 IEEE Workshop on Applications of Computer Vision (WACV), IEEE.
View/Download from: Publisher's site
View description>>

Conventional whiteboard video capture using a static camera usually results in a poor quality. In this paper, we present an autonomous whiteboard scan and capture prototype system, which consist a pair of static and Pan-Tilt-Zoom (PTZ) cameras. The PTZ camera is used to scan the newly-updated whiteboard regions without interrupting the instructor. We will illustrate several computer vision techniques used in our system: Firstly, we present our unique camera calibration method using rough hand-drawn gridlines. Secondly, we present the image processing methods used to determine where the newly updated whiteboard region to be scanned is. Our method also accounts for the whiteboard region occlusion from the instructor.

DaLvand, H, Su, SW & Ha, QP 1970, 'Design of a Variable Reactor for Load Balancing and Harmonics Elimination', Proceedings of Australasian Universities Power Engineering Conference 2008, Australasian Universities Power Engineering Conference, University of New South Wales, Sydney, Australia, pp. 1-6.
View description>>

This paper presents the design of a variable inductor with a rotational magnetic core whose position is controlled in a closed-loop system. This magnetic structure facilitates the impedance changes which may be used for load balancing, harmonics elimination, transient response improvement, and as a controlled reactor in static VAr compensation (SVC). The design of the inductor and analysis of its impedance change caused by positioning a movable element are carried out by using the finite element method. As a result, the variation range of the impedance is determined. The proposed variable inductor is compared with a typical SVC reactor. The results show good performances in static var compensation with higher reliability and no harmonics generated. For closed-loop control, a secondorder sliding mode controller is designed for position control of the rotating core via a DC motor. Simulation results of the proposed system present highly robust and accurate responses without control chattering in face of nonlinearities and disturbances.

Du, C, Wu, Q, Yang, J, He, X & Chen, Y 1970, 'Subspace Analysis Methods plus Motion History Image for Human Action Recognition', 2008 Digital Image Computing: Techniques and Applications, 2008 Digital Image Computing: Techniques and Applications, IEEE, Canberra, Australia, pp. 606-611.
View/Download from: Publisher's site
View description>>

This paper proposes a new human action recognition method which deals with recognition task in a quite different way when compared with traditional methods which use sequence matching scheme. Our method compresses a sequence of an action into a Motion History Image (MHI) on which low-dimensional features are extracted using subspace analysis methods. Unlike other methods which use a sequence consisting of several frames for recognition, our method uses only a MHI per action sequence for recognition. Obviously, our method avoids the complexity as well as the large computation in sequence matching based methods. Encouraging experimental results on a widely used database demonstrate the effectiveness of the proposed method. © 2008 IEEE.

Feng, D, Sikora, T, Siu, WC, Zhang, J, Guan, L & Dugelay, JL 1970, 'Preface', 2008 IEEE 10th Workshop on Multimedia Signal Processing, 2008 IEEE 10th Workshop on Multimedia Signal Processing, IEEE.
View/Download from: Publisher's site

Geng, X, Wang, L, Li, M, Wu, Q & Smith-Miles, K 1970, 'Adaptive fusion of gait and face for human identification in video', 2008 IEEE WORKSHOP ON APPLICATIONS OF COMPUTER VISION, IEEE Workshop on Applications of Computer Vision, IEEE, CO, Copper Mt, pp. 94-+.

Geng, X, Wang, L, Li, M, Wu, Q & Smith-Miles, K 1970, 'Adaptive Fusion of Gait and Face for Human Identification in Video', 2008 IEEE Workshop on Applications of Computer Vision, 2008 IEEE Workshop on Applications of Computer Vision (WACV), IEEE, Copper Mountain, CO, USA, pp. 1-6.
View/Download from: Publisher's site
View description>>

Most work on multi-biometric fusion is based on static fusion rules which cannot respond to the changes of the environment and the individual users. This paper proposes adaptive multi-biometric fusion, which dynamically adjusts the fusion rules to suit the real-time external conditions. As a typical example, the adaptive fusion of gait and face in video is studied. Two factors that may affect the relationship between gait and face in the fusion are considered, i.e., the view angle and the subject-to-camera distance. Together they determine the way gait and face are fused at an arbitrary time. Experimental results show that the adaptive fusion performs significantly better than not only single biometric traits, but also those widely adopted static fusion rules including SUM, PRODUCT, MIN, and MAX.

Guillon, M, Dholakia, K & McGloin, D 1970, 'Aerosol tweezing with a super-continuum laser beam', SPIE Proceedings, NanoScience + Engineering, SPIE, San Diego, CA.
View/Download from: Publisher's site

Guo, Y, Dou, Y, Zhu, J, Lu, H & Jin, J 1970, 'Numerical magnetic field analysis and parameter computation of a PM synchronous generator', Proceedings of the 11th International Conference on Electrical Machines and Systems, ICEMS 2008, 11th International Conference on Electrical Machines and Systems, WORLD PUBLISHING CORPORATION, Huazhong Univ Sci & Technol, Wuhan, PEOPLES R CHINA, pp. 2866-2869.
View description>>

This paper presents the parameter computation and performance prediction of a permanent magnet (PM) synchronous generator based on numerical magnetic field analyses. The finite element method is employed to accurately determine the magnetic field distribution and key parameters of the machine, such as the winding flux, back electromotive force, winding inductance and core loss. An equivalent electrical circuit is applied to predict the generator performance such as the external characteristic.

Guo, Y, Dou, Y, Zhu, J, Lu, H & Jin, J 1970, 'Numerical Magnetic Field Analysis and Performance Computation of a Permanent Magnet Synchronous Generator', Proceedings of the 11th International Conference on Electrical Machines and Systems (ICEMS), World Publishing Corporation, Wuhan, China, pp. 2866-2869.

Guo, Y, Wang, X, Zhu, JG & Lu, H 1970, 'Development of a Wound Rotor Brushless Doubly Fed Machine Based on Slot MMF Harmonics', 2008 IEEE Industry Applications Society Annual Meeting, 2008 IEEE Industry Applications Society Annual Meeting (IAS), IEEE, Edmonton, Canada, pp. 1-5.
View/Download from: Publisher's site
View description>>

In the rotor winding magnetomotive force (MMF) of an ac machine, there exist so-called slot harmonics which appear in pairs and the lower order harmonic of each pair rotates in the opposite direction against the fundamental component. In addition, the slot harmonics have the same winding factor as the fundamental component. Based on these properties, this paper develops a brushless doubly fed machine (BDFM) with wound rotor. The machine consists of two stator windings with p1 and p2 pole-pairs, respectively. The rotor has a normal symmetrical multi-phase winding, in which rotating MMFs with p1 and p2 pole-pairs are induced by their stator counterparts. When the number of rotor slots equals the sum p1 and p2, the two MMFs rotate in opposite directions with respect to the rotor, satisfying the requirement of a BDFM. The major advantage of such a machine is that for both p1 and p2 pole-pair MMFs the winding factor is as high as that of the fundamental component, leading to high utilization of rotor winding and electrical efficiency.

Guo, Y, Zhu, J, Chen, J, Su, SW, Lu, H & Jin, J 1970, 'Performance Analysis of a Claw Pole PM Motor', Proceedings of Australasian Universities Power Engineering Conference 2008, Australasian Universities Power Engineering Conference, University of New South Wales, Sydney, Australia, pp. 1-5.
View description>>

This paper presents the performance analysis of a three-phase three-stack permanent magnet (PM) claw pole motor by using an improved phase variable model, which has been developed for accurate and efficient performance simulation of PM brushless dc motors. The improved model can take into account the effect of magnetic saturation and rotor position dependence of key parameters including back electromagnetic force, winding inductance, cogging torque and core loss, which are obtained from time-stepping nonlinear magnetic field finite element analysis (FEA). The presented model has been implemented in Simulink environment and employed to simulate the dynamic and steady-state performance of the three-phase three-stack PM claw pole motor with soft magnetic composite stator. Parameter computation and performance simulation are validated by experiments on the motor prototype.

Guoqiang Zhang & Kleijn, WB 1970, 'Autoregressive model-based speech packet-loss concealment', 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2008 - 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, IEEE, pp. 4797-4800.
View/Download from: Publisher's site
View description>>

We study packet-loss concealment for speech based on autoregressive modeling using a rigorous minimum mean square error (MMSE) approach. The effect of the model estimation error on predicting the missing segment is studied and an upper bound on the mean square error is derived. Our experiments show that the upper bound is tight when the estimation error is less than the signal variance. We also consider the usage of perceptual weighting on prediction to improve speech quality. A rigorous argument is presented to show that perceptual weighting is not useful in this context. We create simple and practical MMSE-based systems using two signal models: a basic model capturing the short-term correlation and a more sophisticated model that also captures the long-term correlation. Subjective quality comparison tests show that the proposed MMSE-based system provides state-of-the-art performance. ©2008 IEEE.

Hamilton, TJ, Jin, C, van Schaik, A & Tapson, J 1970, 'A 2-D silicon cochlea with an improved automatic quality factor control-loop', 2008 IEEE International Symposium on Circuits and Systems (ISCAS), 2008 IEEE International Symposium on Circuits and Systems (ISCAS), IEEE, Seattle, WA, pp. 1772-+.
View/Download from: Publisher's site

Hamilton, TJ, Tapson, J, Jin, C & van Schaik, A 1970, 'Analogue VLSI implementations of two dimensional, nonlinear, active cochlea models', 2008 IEEE Biomedical Circuits and Systems Conference, 2008 IEEE Biomedical Circuits and Systems Conference, IEEE, Baltimore, MD, pp. 153-+.
View/Download from: Publisher's site

Hamilton, TJ, van Schaik, A & Cornell, B 1970, 'Measuring the impedance of a tethered bilayer membrane biosensor', 2008 IEEE Biomedical Circuits and Systems Conference, 2008 IEEE Biomedical Circuits and Systems Conference, IEEE, Baltimore, MD, pp. 361-+.
View/Download from: Publisher's site

He, X, Jia, W & Wu, Q 1970, 'An approach of canny edge detection with virtual hexagonal image structure', 2008 10th International Conference on Control, Automation, Robotics and Vision, ICARCV 2008, International Conference on Control, Automation, Robotics and Vision, IEEE, Hanoi, Vietnam, pp. 879-882.
View/Download from: Publisher's site
View description>>

Edge detection plays an important role in the areas of image processing, multimedia and computer vision. Gradient-based edge detection is a straightforward method to identify the edge points in the original grey-level image. It is intuitive that, in the human vision system, the edge points always appear where the gradient magnitude assumes a maximum. Hexagonal structure is an image structure alternative to traditional square image structure. 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, an approach that uses bilinear interpolation and tri-linear interpolation is applied for conversion between square and hexagonal structures. Based on this approach, an edge detection method is proposed. This method performs Gaussian filtering to suppress image noise and computes gradients on the hexagonal structure. The pixel edge strengths on the square structure are then estimated before Canny' edge detector is applied to determine the final edge map. The experimental results show that the proposed method improves the edge detection accuracy and efficiency. © 2008 IEEE.

He, X, Zheng, L, Qiang Wu, Wenjing Jia, Bijan Samali & Palaniswami, M 1970, 'Segmentation of characters on car license plates', 2008 IEEE 10th Workshop on Multimedia Signal Processing, 2008 IEEE 10th Workshop on Multimedia Signal Processing (MMSP), IEEE, Cairns, Australia, pp. 399-402.
View/Download from: Publisher's site
View description>>

License plate recognition usually contains three steps, namely license plate detection/localization, character segmentation and character recognition. When reading characters on a license plate one by one after license plate detection step, it is crucial to accurately segment the characters. The segmentation step may be affected by many factors such as license plate boundaries (frames). The recognition accuracy will be significantly reduced if the characters are not properly segmented. This paper presents an efficient algorithm for character segmentation on a license plate. The algorithm follows the step that detects the license plates using an AdaBoost algorithm. It is based on an efficient and accurate skew and slant correction of license plates, and works together with boundary (frame) removal of license plates. The algorithm is efficient and can be applied in real-time applications. The experiments are performed to show the accuracy of segmentation. © 2008 IEEE.

Hellerud, E, Burnett, I, Solvang, A & Svensson, UP 1970, 'Encoding higher order ambisonics with AAC', Audio Engineering Society - 124th Audio Engineering Society Convention 2008, pp. 501-508.
View description>>

In this work we explore a simple method for reducing the bit rate needed for transmitting and storing Higher Order Ambisonics (HOA). The HOA B-format signals are simply encoded using Advanced Audio Coding (AAC) as if they were individual mono signals. Wave field simulations show that by allocating more bits to the lower order signals than the higher the resulting error is very low in the sweet spot, but increases as function of distance from the center. Encoding the higher order signals with a low bit rate does not lead to a reduced audio quality. The spatial information is improved when higher-order channels are included, even if these are encoded with a low bit rate.

Hidayat, R, Dejhan, K, Moungnoul, P & Miyanaga, Y 1970, 'A GHz Simple CMOS Squarer Circuit', 2008 INTERNATIONAL SYMPOSIUM ON COMMUNICATIONS AND INFORMATION TECHNOLOGIES, International Symposium on Communication and Information Technologies, IEEE, LAOS, Vientiane, pp. 533-+.

Hidayat, R, Dejhan, K, Moungnoul, P & Miyanaga, Y 1970, 'A GHz Simple CMOS Squarer Circuit', 2008 International Symposium on Communications and Information Technologies, 2008 International Symposium on Communications and Information Technologies (ISCIT), IEEE, pp. 539-542.
View/Download from: Publisher's site
View description>>

A simple CMOS squarer circuit is proposed. The circuit has a Giga Hertz frequency response that has advantages to be used in communication systems. The proposed circuit focuses on the extension to ultra wide bandwidth. The circuit is based on 0.18 urn CMOS technology simulated using PSPICE level 7. The circuit has wide dynamic range, GHz-bandwidth response and low power consumption. The proposed circuit has been simulated with SPICE and achieved -3dB bandwidth of 10.96GHz. The power consumption is about 86.5uW with a ±1V power supply voltage. Simulation result shows that the proposed squarer can accommodate the whole UWB bandwidth. © 2008 IEEE.

Hoang, DB, Lawrence, E, Ahmad, NF, Balasubramanian, V, Homer, C, Foureur, M, Leap, N & IEEE 1970, 'Assistive Care Loop with Electronic Maternity Records', 2008 10TH IEEE INTERNATIONAL CONFERENCE ON E-HEALTH NETWORKING, APPLICATIONS AND SERVICES, International Conference on e-Health Networking, Applications and Services, IEEE, Biopolis, Singapore, pp. 118-123.
View/Download from: Publisher's site
View description>>

Surprisingly women-held pregnancy health records (paper based) are still predominantly used in most hospitals in Australia. These records are not standardized as each hospital or state has a slightly different version. Early efforts have been made to standardize pregnancy records and make them available electronically. Electronic record systems do not allow dynamic interaction between users and they are not accessible when users are mobile. This paper describes an Assistive Maternity Care (AMC) system that addresses a number of important issues: 1) transforming a women-held paper-based record for pregnancy care into an Electronic Maternity Record (EMR); 2) investigating mechanisms to make the record active; 3) creating a system whereby details of the pregnant women and their carers can be recorded, updated over wired and wireless networks; and 4) creating a pregnancy care loop over which midwives and doctors and pregnant women under their care can communicate effectively anywhere, anytime for the duration of pregnancy. © 2008 IEEE.

Hossain, MJ, Pota, H & Ugrinovskii, V 1970, 'Short and long-term dynamic voltage instability', IFAC Proceedings Volumes (IFAC-PapersOnline).
View/Download from: Publisher's site
View description>>

This paper presents a novel approach to capture the development of dynamic voltage instability caused by the dynamics of different power system devices, such as loads, generators, automatic voltage regulators (AVR), overexcitation limiters (OXL), power system stabilizers (PSS), and on-load tap changing (OLTC) transformers using an accurate time-domain analysis. A small power system model is presented which allows one to analyse combinations of these effects, showing how different major forms of long-term and short-term dynamic voltage instability occur. Effects of line tripping, sudden change of load, and fault clearing time on dynamic voltage instability will also be discussed. Finally, advantages of the dynamic analysis over the static analysis will be investigated. Copyright © 2007 International Federation of Automatic Control All Rights Reserved.

Huang, S & Su, SW 1970, 'Robust Control for Nonlinear Discrete-Time Systems with Quantitative Input to State Stability Requirement', IFAC Proceedings Volumes, IFAC World Congress, Elsevier BV, Seoul, Korea, pp. 14186-14191.
View/Download from: Publisher's site
View description>>

In this paper, we consider state feedback robust control problems for discrete-time nonlinear systems subject to disturbances. The objective of the control is to minimize a performance function while guaranteeing a prescribed quantitative input to state stability (ISS) property for the closed-loop systems. By introducing the concept of ISS control invariant set, a sufficient condition for the problem to be feasible is given. Built on the sufficient condition, a computationally efficient control design algorithm based on one-step min-max optimization is developed. An example is given to illustrate the proposed strategy. Copyright © 2007 International Federation of Automatic Control All Rights Reserved.

Huang, X 1970, 'Making Carrier Frequency Offset an Advantage for Orthogonal Frequency Division Multiplexing', 2008 THIRD INTERNATIONAL CONFERENCE ON COMMUNICATIONS AND NETWORKING IN CHINA, VOLS 1-3, 3rd International Conference on Communications and Networking in China, IEEE, Hangzhou, PEOPLES R CHINA, pp. 812-816.

Huang, X 1970, 'Making carrier frequency offset an advantage for orthogonal frequency division multiplexing', 2008 Third International Conference on Communications and Networking in China, 2008 Third International Conference on Communications and Networking in China (CHINACOM), IEEE, pp. 854-858.
View/Download from: Publisher's site
View description>>

Contrary to the common belief that the carrier frequency offset (CFO) in an orthogonal frequency division multiplexing (OFDM) system would adversely impact on system performance, this paper shows that the CFO actually has the effect of linear precoding among transmitted data symbols and hence can be exploited to improve the diversity performance over frequency-selective fading channels. With both analysis and Monte Carlo simulation, it is proved that an OFDM system with CFO equal to half of the subcarrier spacing can potentially achieve the performance of diversity order four by the maximum-likelihood detection and demonstrate a 5 dB improvement using the minimum mean squared error equalization.

Huang, X 1970, 'Multipath Diversity of Precoded OFDM with Linear Equalization', 2008 IEEE International Conference on Communications, 2008 IEEE International Conference on Communications, IEEE, Beijing, PEOPLES R CHINA, pp. 1307-1311.
View/Download from: Publisher's site

Iacopi, F, Eichhammer, Y, Massy, C, Vereecken, PM, Moelans, N, Richard, O, Smeets, D, Blanpain, B, De Gendt, S & Heyns, M 1970, 'Indium-assisted Growth of Si Nanowires: Perspectives on Controlled Growth for CMOS Applications', MRS Proceedings, Springer Science and Business Media LLC, pp. 77-82.
View/Download from: Publisher's site
View description>>

ABSTRACTSemiconductor nanowires are attractive nano- building blocks for microelectronics. However, the requirements for their manufacturing and application in the microelectronics industry are very demanding. Beyond compatibility with Si technology, full control on the characteristics of the grown wires (diameter, location, crystallinity, etc..), homogeneity on wafer –scale and reproducibility are essential. In this study we review critically important challenges for a controlled process of In –mediated growth of Si nanowires. First, we stress the importance of surface type for both particle catalysts and growth substrates. Both selection and preparation of such surfaces have large impact on growth, as they influence the initiation and the driving forces for the VLS growth mechanism. Moreover, wire characteristics such as morphology, crystalline quality and growth orientation appear more difficult to control when growing from particles with sizes below 40-50nm. This limitation arises as a result of both fundamental mechanisms and more specific constrains linked to the In-Si system.A few perspectives are given for the achievement of a controlled Si nanowire growth in a Si –technology compatible fashion.

Jin Jianxun, Chen Xiaoyuan, Guo Youguang, Zhan Yuedong & Zhu Jianguo 1970, 'HTS transformer and its related loss measurement and quench protection techniques', 2008 27th Chinese Control Conference, 2008 Chinese Control Conference (CCC), IEEE, Kunming, China, pp. 292-296.
View/Download from: Publisher's site
View description>>

Recently research and development concerning applications of high temperature superconducting (HTS) transformers have been progressed actively in the world. Besides the HTS rated current capability, it is also essential to develop the relevant and precise performance test and protection systems for HTS transformers. This paper mainly presents elementary test and protection methods of HTS transformers including AC loss measurement, and quench detection and protection. A new integrated measurement system for HTS transformers is also proposed by using the Labview virtual instrument software.

Kha, HH, Tuan, HD & Nguyen, TQ 1970, 'Optimal triplet halfband filter banks with k-regularity and image coding application', 2008 Second International Conference on Communications and Electronics, 2008 Second International Conference on Communications and Electronics (ICCE), IEEE, Hoi An, Vietnam, pp. 230-234.
View/Download from: Publisher's site
View description>>

The triplet halfband filter bank structure is well known to be efficient for the design and implementation of a class of biorthogonal wavelet filter banks. Previously, two extreme cases in filter characteristics including equiripple filters with no regul

Khan, MAY & Veitch, D 1970, 'Peeling the 802.11 onion', Proceedings of the third ACM international workshop on Wireless network testbeds, experimental evaluation and characterization, MobiCom08: Annual International Conference on Mobile Computing and Networking, ACM, ACM, pp. 33-40.
View/Download from: Publisher's site

Khan, MAY & Veitch, D 1970, 'Speedo: Realistic achievable bandwidth in 802.11 through passive monitoring', 2008 33rd IEEE Conference on Local Computer Networks (LCN), 2008 33rd IEEE Conference on Local Computer Networks (LCN 2008), IEEE, IEEE, pp. 892-899.
View/Download from: Publisher's site

Le, H, Schiff, N, Plessis, JD & Hoang, D 1970, 'A pervasive tele-health system for continual and low intrusive monitoring using peer-to-peer networks', 5th International Conference on Information Technology and Applications, ICITA 2008, International Conference on Information Technology and Applications, Macquarie Scientific Publishing, Cairns, Australia, pp. 862-866.
View description>>

There are many people suffering from chronic illnesses, obesity and related diseases such as: high blood pressure, arrhythmia, diabetes, etc. However, with a large number of patients and constant health monitoring requirements, a centralized server will not be able to accommodate such high volumes of data. In this paper, we propose to develop a pervasive electronic healthcare system using Peer-to-Peer (P2P) networks. We developed a heart monitoring application as our first prototype to demonstrate the concept. The main advantage of the model is scalability and cost efficiency.

Le, T, Dong, Y, Liu, R, Jha, S, Rosberg, Z & IEEE 1970, 'Implementation aspects of reliable transport protocols in wireless sensor networks', 2008 3RD INTERNATIONAL CONFERENCE ON COMMUNICATION SYSTEM SOFTWARE AND MIDDLEWARE AND WORKSHOPS, VOLS 1 AND 2, 3rd International Conference on Communication System Software and Middleware and Workshop, IEEE, Bangalore, INDIA, pp. 574-580.
View/Download from: Publisher's site

Lebbe, MA, Agbinya, JI, Chaczko, Z & Braun, R 1970, 'Artificial immune system inspired danger modelling in Wireless Mesh Networks', 2008 International Conference on Computer and Communication Engineering, 2008 International Conference on Computer and Communication Engineering (ICCCE), IEEE, Malaysia, pp. 984-988.
View/Download from: Publisher's site
View description>>

In recent years wireless mesh network (WMN) technologies and its applications have been actively researched and developed as the promising solution for future wireless mobile networks. On the other hand security of WMN is often a secondary reflection in development. In our previous work we proposed Artificial Immune System model to employ in secure routing in WMN. This paper improves and extends the algorithm in our previous work with more achievable danger levels and introduces responsible parameters and model danger in WMN. Moreover this paper proposes the elected network simulator for the experiments. ©2008 IEEE.

Lee, JE-Y & Seshia, AA 1970, 'Square wine glass mode resonator with quality factor of 4 million', 2008 IEEE Sensors, 2008 IEEE Sensors, IEEE.
View/Download from: Publisher's site

Lee, JE-Y, Yan, J & Seshia, AA 1970, 'Anchor limited Q in flexural mode resonators', 2008 IEEE Ultrasonics Symposium, 2008 IEEE Ultrasonics Symposium (IUS), IEEE.
View/Download from: Publisher's site

Lee, JE-Y, Zhu, Y & Seshia, AA 1970, 'A micromechanical electrometer approaching single-electron charge resolution at room temperature', 2008 IEEE 21st International Conference on Micro Electro Mechanical Systems, 2008 IEEE 21st International Conference on Micro Electro Mechanical Systems, IEEE.
View/Download from: Publisher's site

Leijdekkers, P & Gay, V 1970, 'A self-test to detect a heart attack using a mobile phone and wearable sensors', PROCEEDINGS OF THE 21ST IEEE INTERNATIONAL SYMPOSIUM ON COMPUTER-BASED MEDICAL SYSTEMS, IEEE International Symposium on Computer-Based Medical Systems, IEEE, Jyvaskyla, pp. 93-98.
View/Download from: Publisher's site

Li Zheng & Hoang, DB 1970, 'Performance analysis for resource coordination in a high-density wireless environment', 2008 IEEE Symposium on Computers and Communications, 2008 IEEE Symposium on Computers and Communications (ISCC), IEEE, Marrakech, Morocco, pp. 685-690.
View/Download from: Publisher's site
View description>>

The cochannel overlapping basic service sets (OBSS) wireless interference is unavoidable in a high-density overlapping BSS environment. In order to provide interference-free environment and, at the same time, Quality of Services, centralized resources coordination functionalities particularly in Medium Access Control (MAC) layer are required. The proposed scheme, based on the context of 802.11 WiFi, separates the uplink and downlink transmission into two periods governed by contention scheme and polling scheme respectively. The possible collisions during the synchronized uplink period are avoided because of the natures of contention scheme used. During the downlink period, the grouping assignments, using coloring theory, are carried out based on the topology to divide BSSs into groups and then time spans to avoid collision. The constraint of grouping is that no two overlapping BSSs could be assigned to the same group/time span, so interferences are minimized using time division technique. A complete performance analysis in a number of simulation scenarios is finally presented.

Li, L 1970, 'Decentralized boundary control of irrigation canal networks via a strict Lyapunov method', IFAC Proceedings Volumes, The International Federation of Automatic Control, Elsevier BV, Seoul, Korea, pp. 9970-9975.
View/Download from: Publisher's site
View description>>

A decentralized boundary control problem for irrigation canal networks is considered in this paper. The control scheme is based on a strict Lyapunov method introduced in Coron et al. (2007). A sufficient condition is presented to guarantee the closed-loop system to be locally convergent to a desired set point, which extends the results in Coron et al. (2007) for the single-pool case to a decentralized fashion for the multi-pool case. By eliminating the redundant variables, the derived condition involves certain contractive condition and discrete-time Lyapunov inequality with variables in a diagonal structure. This provides an easier way to check the existence of the solution. An application to a two-pool canal with overflow spillways is presented to demonstrate the proposed approach. Copyright © 2007 International Federation of Automatic Control All Rights Reserved.

Li, L 1970, 'Model Reduction for Linear Parameter-Dependent Systems', IFAC Proceedings Volumes, IFAC World Congress, Elsevier BV, South Korea, pp. 4048-4053.
View/Download from: Publisher's site
View description>>

The paper considers the problem of model reduction for a class of linear parameter-dependent (LPD) systems. Three model reduction approaches: balanced truncation, balanced LQG truncation and gain-scheduled $mathcal{H}_infty$ model reduction, are presented to reduce the dimension of LPD systems. For the former two approaches, conditions to proceed the reduction are given in terms of a finite number of linear matrix inequalities (LMIs); while the latter one involves LMIs with some additional rank constraint.

Li, L & IEEE 1970, 'Coprime Factor Model Reduction for Continuous-time Uncertain Systems', 47TH IEEE CONFERENCE ON DECISION AND CONTROL, 2008 (CDC 2008), IEEE Conference on Decision and Control, IEEE, Cancun, Mexico, pp. 4227-4232.
View/Download from: Publisher's site
View description>>

The paper considers the problem of coprime factor model reduction for a class of continuous-time uncertain systems with structured norm bounded uncertainty. The proposed method is applicable to the uncertain systems which may be robustly unstable, overcoming the robust stability restriction in the balanced truncation approach. A systematic approach is presented to construct a contractive coprime factor for the underlying uncertain system, based on the use of LMIs. This enables the balanced truncation to be applied to the contractive coprime factor to obtain the reduced uncertain system. Error bound on the L 2-induced norm of the resulting coprime factor is derived. © 2008 IEEE.

Li, Y, Li, L, Hellicar, A & Guo, YJ 1970, 'Super-resolution reconstruction of terahertz images', SPIE Proceedings, SPIE Defense and Security Symposium, SPIE.
View/Download from: Publisher's site
View description>>

A prototype of terahertz imaging system has been built in CSIRO. This imager uses a backward wave oscillator as the source and a Schottky diode as the detector. It has a bandwidth of 500-700 GHz and a source power 10 mW. The resolution at 610 GHz is about 0.85 mm. Even though this imaging system is a coherent system, only the signal power is measured at the detector and the phase information of the detected wave is lost. Some initial images of tree leaves, chocolate bars and pinholes have been acquired with this system. In this paper, we report experimental results of an attempt to improve the resolution of this imaging system beyond the limitation of diffraction (super-resolution). Due to the lack of phase information needed for applying any coherent super-resolution algorithms, the performance of the incoherent Richardson-Lucy super-resolution algorithm has been evaluated. Experimental results have demonstrated that the Richardson-Lucy algorithm can significantly improve the resolution of these images in some sample areas and produce some artifacts in other areas. These experimental results are analyzed and discussed.

Lihong Zheng, Xiangjian He, Qiang Wu, Wenjing Jia, Samali, B & Palaniswami, M 1970, 'A hierarchically combined classifier for license plate recognition', 2008 8th IEEE International Conference on Computer and Information Technology, 2008 8th IEEE International Conference on Computer and Information Technology (CIT), IEEE, Sydney, pp. 372-377.
View/Download from: Publisher's site
View description>>

High accuracy and fast recognition speed are two requirements for real-time and automatic license plate recognition system. In this paper, we propose a hierarchically combined classifier based on an Inductive Learning Based Method and an SVM-based classification. This approach employs the inductive learning based method to roughly divide all classes into smaller groups. Then the SVM method is used for character classification in individual groups. Both start from a collection of samples of characters from license plates. After a training process using some known samples in advance, the inductive learning rules are extracted for rough classification and the parameters used for SVM-based classification are obtained. Then, a classification tree is constructed for further fast training and testing processes for SVMbased classification. Experimental results for the proposed approach are given. From the experimental results, we can make the conclusion that the hierarchically combined classifier is better than either the inductive learning based classification or the SVMbased classification in terms of error rates and processing speeds. © 2008 IEEE.

Lin, Z, Zhu, J & Guo, Y 1970, 'Observation of Magnetization Processes in Soft Magnetic Composite', Proceedings of the 32nd Annual Condensed Matter and Materials Meeting, Annual Condensed Matter and Materials Meeting, AIP, Wagga Wagga, Australia, pp. 1-4.
View description>>

A magneto-optical imaging technique has been employed to visualize magnetization processes of soft magnetic composite material. The profiles of reflected light intensity of magneto-optical images at the sample surface were plotted. The results demonstrate that magnetooptical imaging is a sensitive tool to visualize magnetization process. The flux profiles obtained under conditions of perpendicular and tangential magnetizations indicate that the sample behaves as a collection of individual magnetized particles rather than as a uniform and continuous magnetic substance.

Lin, Z, Zhu, J & Guo, Y 1970, 'Three-Dimensional Magnetic Properties of Soft Magnetic Composite Materials', Proceedings of the 32nd Annual Condensed Matter and Materials Meeting Website, Annual Condensed Matter and Materials Meeting, AIP, Wagga Wagga, Australia, pp. 1-4.
View description>>

This paper studies the relationship between the B and H loci, and the power losses features of a soft magnetic composite in 3-D space when the B loci are controlled to be circles with increasing magnitudes and ellipses evolving from a straight line to a circle in three orthogonal planes. It is found that the B and H loci lie in the same magnetization plane, but the H loci and power losses strongly depend on the orientation, position, and process of magnetization. On the other hand, the H vector evolves into a unique locus, and the power loss approaches a unique value, respectively, when the B vector evolves into a round locus with the same magnitude from either a series of circles or ellipses.

Ling, SH, Iu, HHC, Leung, FHF, Chan, KY & IEEE 1970, 'Modelling the Development of Fluid Dispensing for Electronic Packaging: Hybrid Particle Swarm Optimization Based-Wavelet Neural Network Approach', 2008 IEEE INTERNATIONAL JOINT CONFERENCE ON NEURAL NETWORKS, VOLS 1-8, International Joint Conference on Neural Networks, IEEE, Hong Kong, PEOPLES R CHINA, pp. 98-103.
View/Download from: Publisher's site

Liu, RP, Rosberg, Z, Collings, IB, Wilson, C, Dong, AY & Jha, S 1970, 'Overcoming radio link asymmetry in wireless sensor networks.', PIMRC, IEEE, pp. 1-5.
View/Download from: Publisher's site
View description>>

We derive two new energy efficient reliable data transport protocols for overcoming the negative impact of asymmetric radio links in wireless sensor networks. The energy efficiency of these algorithms is explicitly derived using our theoretical model, and validated by results obtained from simulations and field trials. The analytical, simulation and field trials demonstrate that our proposed protocols perform well in networks with asymmetric links and can save energy of up to 27% compared to conventional ARQ schemes. © 2008 IEEE.

Liu, RP, Zic, J, Collings, IB, Dong, AY & Jha, S 1970, 'Efficient Reliable Data Collection in Wireless Sensor Networks', 68TH IEEE VEHICULAR TECHNOLOGY CONFERENCE, FALL 2008, 68th IEEE Vehicular Technology Conference, IEEE, Calgary, CANADA, pp. 1974-1978.

Liu, RP, Zic, J, Collings, IB, Dong, AY & Jha, S 1970, 'Efficient Reliable Data Collection in Wireless Sensor Networks.', VTC Fall, IEEE, pp. 1-5.
View/Download from: Publisher's site
View description>>

We propose an Efficient Reliable Data Collection (eRDC) algorithm. The eRDC is designed for energy-constraint wireless sensor networks (WSN) to balance reliability and energy consumption. We derive energy efficiencies of the proposed reliability schemes, and evaluate their performances. These analyses provide a guideline to determine the number of retransmissions for reliable data delivery. Dynamic programming concept is used to find the optimal solution. We present a distributed eRDC implementation to dynamically control the maximum number of retransmissions based on the guideline provided. Discrete event simulations and field trials with wireless sensor nodes confirmed our results. ©2008 IEEE.

López-Mariscal, C, Burnham, D, Rudd, D, McGloin, D & Gutiérrez-Vega, JC 1970, 'Accurate phase mapping of nondiffracting singular beams', SPIE Proceedings, Optical Engineering + Applications, SPIE, San Diego, CA.
View/Download from: Publisher's site

Luo, C, Cai, X & Zhang, J 1970, 'GATE: A Novel Robust Object Tracking Method Using the Particle Filtering and Level Set Method', 2008 Digital Image Computing: Techniques and Applications, 2008 Digital Image Computing: Techniques and Applications, IEEE, Canberra, ACT, pp. 378-385.
View/Download from: Publisher's site
View description>>

This paper presents a novel algorithm for robust object tracking based on the particle filtering method employed in recursive Bayesian estimation and image segmentation and optimisation techniques employed in active contour models and level set methods.

Luo, C, Cai, X & Zhang, J 1970, 'Robust object tracking using the particle filtering and level set methods: A comparative experiment', 2008 IEEE 10th Workshop on Multimedia Signal Processing, 2008 IEEE 10th Workshop on Multimedia Signal Processing (MMSP), IEEE, Cairns, QLD, pp. 359-364.
View/Download from: Publisher's site
View description>>

Robust visual tracking has become an important topic of research in computer vision. A novel method for robust object tracking, GATE [11], improves object tracking in complex environments using the particle filtering and the level set-based active contou

Luong, VD, Tran, NN & Tuan, HD 1970, 'Optimal training sequence design for MIMO-OFDM in spatially correlated fading', 2008 2nd International Conference on Signal Processing and Communication Systems, 2008 2nd International Conference on Signal Processing and Communication Systems (ICSPCS 2008), IEEE, Gold Coast, Australia, pp. 294-299.
View/Download from: Publisher's site
View description>>

Channel estimation and training sequence design for spatially correlated fading in Multiple Input Multiple Output with Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems are still open research topics of great interest. In this paper, we inve

McGloin, D 1970, 'Studying Aerosols Using Optical Traps', Frontiers in Optics 2008/Laser Science XXIV/Plasmonics and Metamaterials/Optical Fabrication and Testing, Frontiers in Optics, OSA.
View/Download from: Publisher's site

Mohamed Mowjoon, D, Agbinya, JI & Chaczko, ZC 1970, 'Policy-based Danger Management in Artificial Immune System Inspired Secure Routing in Wireless Mesh Networks', Proceedings International MultiConference of Engineers and Computer Scientists, International MultiConference of Engineers and Computer Scientists, International Association of Engineers, Hong Kong, pp. 268-270.
View description>>

This paper introduces Policy based Management Information Base to manage danger in Artificial Immune System inspired secure routing in Wireless Mesh Networks. WMN management functions are defined and the paper focuses only on the security function. Proposed policy based management and typical operation of the architecture are also reported.

Nanda, P 1970, 'Supporting QoS Guarantees Using Traffic Engineering and Policy Based Routing', 2008 International Conference on Computer Science and Software Engineering, 2008 International Conference on Computer Science and Software Engineering, IEEE, Wuhan, Hubei, China, pp. 137-142.
View/Download from: Publisher's site
View description>>

The problem of providing Quality of Service (QoS) in the Internet stems from the original choice of a datagram packet switching service model for the Internet Protocol (IP). Since, in principle, each packet can take any path to the destination, it is impossible to provide any absolute guarantees about service. This paper presents a scheme using traffic engineering techniques and implements policy based routing supported by Border Gateway Protocol (BGP) to achieve QoS parameters (loss, delay and jitter) values within the bound for high priority voice traffic in the Internet. Simulation using OPNET shows how such techniques can achieve the desired results. © 2008 IEEE.

Nguyen, DHN, Nguyen, HH & Tuan, HD 1970, 'Distributed unitary space-time modulation in partially coherent and noncoherent relay networks', 2008 2nd International Conference on Signal Processing and Communication Systems, 2008 2nd International Conference on Signal Processing and Communication Systems (ICSPCS 2008), IEEE, Gold Coast, AUSTRALIA, pp. 231-+.
View/Download from: Publisher's site

Nguyen, DHN, Nguyen, HH & Tuan, HD 1970, 'High-rate space-time block coding schemes', 2008 Second International Conference on Communications and Electronics, 2008 Second International Conference on Communications and Electronics (ICCE), IEEE, pp. 176-179.
View/Download from: Publisher's site
View description>>

A rate-6/4 full-diversity orthogonal space-time block code (STBC) is constructed for QPSK and 2 transmit antennas by applying constellation scaling and rotation to the set of quaternions used in Alamouti code. Also given is a rate-9/8 full-diversity quasi-orthogonal space-time block code (QOSTBC) for 4 transmit antennas. Lastly, a rate-10/8 code is presented for 4 transmit antennas. Simulation results indicate that these high-rate codes achieve better throughputs in the high signal-to-noise ratio region. ©2008 IEEE.

Nguyen, N, Nguyen, HT & Su, S 1970, 'Neuro-sliding mode multivariable control of a powered wheelchair', 2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, IEEE, Vancouver, Canada, pp. 3471-3474.
View/Download from: Publisher's site
View description>>

This paper proposes a neuro-sliding mode multivariable control approach for the control of a powered wheelchair system. In the first stage, a systematic decoupling technique is applied to the wheelchair system in order to reduce the multivariable control problem into two independent scalar control problems. Then two Neuro-Sliding Mode Controllers (NSMCs) are designed for these independent subsystems to guarantee system robustness under model uncertainties and unknown external disturbances. Both off-line and on-line trainings are involved in the second stage. Real-time experimental results confirm that robust performance for this multivariable wheelchair control system under model uncertainties and unknown external disturbances can indeed be achieved.

Nguyen, N, Nguyen, HT & Su, S 1970, 'Optimal path-following control of a smart powered wheelchair', 2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, IEEE, Vancouver, Canada, pp. 5025-5028.
View/Download from: Publisher's site
View description>>

This paper proposes an optimal path-following control approach for a smart powered wheelchair. Lyapunov's second method is employed to find a stable position tracking control rule. To guarantee robust performance of this wheelchair system even under model uncertainties, an advanced robust tracking is utilised based on the combination of a systematic decoupling technique and a neural network design. A calibration procedure is adopted for the wheelchair system to improve positioning accuracy. After the calibration, the accuracy is improved significantly. Two real-time experimental results obtained from square tracking and door passing tasks confirm the performance of proposed approach.

Nguyen, N, Nguyen, HT & Su, S 1970, 'Optimal path-following control of a smart powered wheelchair', Proceedings of the 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08 - 'Personalized Healthcare through Technology', pp. 5025-5028.
View/Download from: Publisher's site
View description>>

This paper proposes an optimal path-following control approach for a smart powered wheelchair. Lyapunov's second method is employed to find a stable position tracking control rule. To guarantee robust performance of this wheelchair system even under model uncertainties, an advanced robust tracking is utilised based on the combination of a systematic decoupling technique and a neural network design. A calibration procedure is adopted for the wheelchair system to improve positioning accuracy. After the calibration, the accuracy is improved significantly. Two real-time experimental results obtained from square tracking and door passing tasks confirm the performance of proposed approach. © 2008 IEEE.

Nguyen, TT & Tuan, HD 1970, 'A modified spatial spread spectrum method for digital image watermarking', HUT-ICCE 2008 - 2nd International Conference on Communications and Electronics, pp. 282-287.
View/Download from: Publisher's site
View description>>

Spread spectrum is one of the most effective approaches for digital image watermarking because it satisfies the imperceptiveness, robustness as well as security requirements. Unfortunately, this method may be affected by interference from the cover image and completely fails in the case of having no watermark in the tested image. In addition, some proposed improvements to eliminate this interference are invalid for spatial image watermarking which obtains a low cost and is easy to adapt to real-time applications. This paper proposes a modified spatial spread spectrum method to overcome these disadvantages. By removing the mean value in the tested image, the proposed method reduces the interference and achieves a better error probability. Moreover, by using a flexible threshold in the detector, our method can work successfully even if the tested image is pure. We not only analyze and derive the closed-form expressions for the optimal threshold and the error probability, but also investigate various images and some common image attacks including noise, compression and filtering. ©2008 IEEE.

Nguyen, TT & Tuan, HD 1970, 'A modified spatial spread spectrum method for digital image watermarking', 2008 Second International Conference on Communications and Electronics, 2008 Second International Conference on Communications and Electronics (ICCE), IEEE, Hoi An, Vietnam, pp. 279-284.
View/Download from: Publisher's site
View description>>

Spread spectrum is one of the most effective approaches for digital image watermarking because it satisfies the imperceptiveness, robustness as well as security requirements. Unfortunately, this method may be affected by interference from the cover image

Nguyen, V, Tuan, HD, Nguyen, HH & Tran, NN 1970, 'Optimal superimposed training design for spatially correlated fading MIMO channels', IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, IEEE, St Thomas, VI, pp. 3206-3217.
View/Download from: Publisher's site
View description>>

The problem of channel estimation for spatially correlated fading multiple-input multiple-output (MIMO) systems is considered. Based on the channel's second order statistic, the minimum mean-square error (MMSE) channel estimator that works with the super

Ni, W, Zou, W & Wang, H 1970, 'Modeling of Spatially Cross-Correlated Shadow Fading in Distributed Radio Access Networks', 2008 IEEE International Conference on Communications, 2008 IEEE International Conference on Communications, IEEE, Beijing, PEOPLES R CHINA, pp. 4472-4476.
View/Download from: Publisher's site

Ohnuki, K, Takahashi, W, Yoshizawa, S & Miyanaga, Y 1970, 'Noise Robust Speech Features for Automatic Continuous Speech Recognition using Running Spectrum Analysis', 2008 International Symposium on Communications and Information Technologies, 2008 International Symposium on Communications and Information Technologies (ISCIT), IEEE.
View/Download from: Publisher's site

Ong, C, Lu, S & Zhang, J 1970, 'An Approach for Enhancing the Results of Detecting Foreground Objects and Their Moving Shadows in Surveillance Video', 2008 Digital Image Computing: Techniques and Applications, 2008 Digital Image Computing: Techniques and Applications, IEEE, Canberra, ACT, pp. 242-249.
View/Download from: Publisher's site
View description>>

Automated surveillance system is becoming increasingly important especially in the fields of computer vision and video processing. This paper describes a novel approach for improving the results of detecting foreground objects and their shadows in indoor

Otoom, AF, Gunes, H & Piccardi, M 1970, 'Automatic classification of abandoned objects for surveillance of public premises', CISP 2008: FIRST INTERNATIONAL CONGRESS ON IMAGE AND SIGNAL PROCESSING, VOL 4, PROCEEDINGS, International Congress on Image and Signal Processing, IEEE, Sanya, Hainan, China, pp. 542-549.
View/Download from: Publisher's site
View description>>

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 analyzed and classified images of trolley(s), bag(s), single person(s), and group(s) of people by using various shape features with a number of uncluttered and cluttered images and applied multi-frame integration to overcome partial occlusions and obtain better recognition results. We also tested the proposed techniques on data extracted from a well-recognized and recent data set, PETS 2007 benchmark data set [16]. Our experimental results show that the features extracted are invariant to data set and classification scheme chosen. For our four-class object recognition problem, we achieved an average recognition accuracy of 70%.

Otoom, AF, Gunes, H & Piccardi, M 1970, 'Comparative performance analysis of feature sets for abandoned object classification', 2008 IEEE International Conference on Systems, Man and Cybernetics, 2008 IEEE International Conference on Systems, Man and Cybernetics (SMC), IEEE, Singapore City, Singapore, pp. 1-6.
View/Download from: Publisher's site
View description>>

Accurate classification of abandoned objects is crucial in video surveillance systems. In this paper, we experiment with different validation techniques (hold-out and 10-fold cross validation), with the aim of determining which feature set proves more useful for accurate object classification in a video surveillance context (scale invariant image transform (SIFT) keypoints vs. geometric primitive features). Moreover, we show how the resulting features affect classification performance across different classifiers. We also further analyze the best performing classifier in order to have better understanding of its classification results. Objects are classified into four different categories: bag (s), person (s), trolley (s), and group (s) of people. Our experimental results show that the highest recognition accuracy and the lowest false alarm rate are achieved by building a classifier based on our proposed set of statistics of geometric primitives' features. This set of features maximizes inter-class separation and simplifies the classification process. Classification based on this set of features thus outperforms the second best approach based on SIFT keypoint histograms by providing on average 22% higher recognition accuracy and 7% lower false alarm rate.

Otoom, AF, Gunes, H, Piccardi, M & IEEE 1970, 'FEATURE EXTRACTION TECHNIQUES FOR ABANDONED OBJECT CLASSIFICATION IN VIDEO SURVEILLANCE', 2008 15TH IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, VOLS 1-5, IEEE International Conference on Image Processing, IEEE, San Diego, CA, USA, pp. 1368-1371.
View/Download from: Publisher's site
View description>>

We address the problem of abandoned object classification in video surveillance. Our aim is to determine (i) which feature extraction technique proves more useful for accurate object classification in a video surveillance context (scale invariant image transform (SIFT) keypoints vs. geometric primitive features), and (ii) how the resulting features affect classification accuracy and false positive rates for different classification schemes used. Objects are classified into four different categories: bag (s), person (s), trolley (s), and group (s) of people. Our experimental results show that the highest recognition accuracy and the lowest false alarm rate are achieved by building a classifier based on our proposed set of statistics of geometric primitives' features. Moreover, classification performance based on this set of features proves to be more invariant across different learning algorithms. © 2008 IEEE.

Paisitkriangkra, S, Shen, C & Zhang, J 1970, 'Real-time Pedestrian Detection Using a Boosted Multi-layer Classifier', The Eighth International Workshop on Visual Surveillance, in conjunction with European Conference on Computer Vision (ECCV'08), 2008, IEEE International Workshop on Visual Surveillance, Institute of Electrical and Electronics Engineers, Marseille France.
View description>>

Techniques for detecting pedestrian in still images haveattached considerable research interests due to its wide applicationssuch as video surveillance and intelligent transportationsystems. In this paper, we propose a novel simplerpedestrian detector using state-of-the-art locally extractedfeatures, namely, covariance features. Covariancefeatures were originally proposed in [1, 2]. Unlike the workin [2], where the feature selection and weak classifier trainingare performed on the Riemannian manifold, we selectfeatures and train weak classifiers in the Euclidean spacefor faster computation. To this end, AdaBoost with weightedFisher linear discriminant analysis based weak classifiersare adopted. Multiple layer boosting with heterogeneousfeatures is constructed to exploit the efficiency of the Haarlikefeature and the discriminative power of the covariancefeature simultaneously. Extensive experiments show that bycombining the Haar-like and covariance features, we speedup the original covariance feature detector [2] by up to anorder of magnitude in processing time without compromisingthe detection performance. For the first time, the proposedwork enables covariance feature based pedestriandetection to work real-time.

Paisitkriangkrai, S, Chunhua Shen & Jian Zhang 1970, 'An experimental study on pedestrian classification using local features', 2008 IEEE International Symposium on Circuits and Systems (ISCAS), 2008 IEEE International Symposium on Circuits and Systems (ISCAS), IEEE, Seattle, WA, pp. 2741-2744.
View/Download from: Publisher's site
View description>>

This paper presents an experimental study on pedestrian detection using state-of-the-art local feature extraction and support vector machine (SVM) classifiers. The performance of pedestrian detection using region covariance, histogram of oriented gradien

Park, M, Jin, SJ, Hofstetter, R, Xu, M & Kang, BH 1970, 'Automatic Colonic Polyp Detection by the Mapping Using Regional Unit Sphere', 2008 International Conference on Multimedia and Ubiquitous Engineering (mue 2008), 2008 International Conference on Multimedia and Ubiquitous Engineering (mue 2008), IEEE, pp. 144-149.
View/Download from: Publisher's site
View description>>

Colonic polyps appear like elliptical protrusions on the inner wall of the colon. The many proposed algorithms assumed the shape of a polyp as a spherical cap, so the algorithms are not flexible when the polyps are irregular shapes. In this paper, we propose a mapping using regional unit sphere (MuRUS) method to overcome the problem caused by unexpected polyp shapes. The MuRUS has shape invariant and size invariant properties. Our method was applied to colon CT images from 37 patients each having a prone and supine scan. There are 45 colonscopically confirmed polyps. The results obtained by our algorithm were compared with those gold standards. 100% of polyps >= 10mm in diameter were detected, 90% of polyps >= 6mm in diameter were detected and 70% of polyps < 6mm in diameter were detected at 7.0 FPs per patient. © 2008 IEEE.

Pasha, SA & Hoang Duong Tuan 1970, 'Nonlinear filtering for the linear fractional transformation model', 2008 Second International Conference on Communications and Electronics, 2008 Second International Conference on Communications and Electronics (ICCE), IEEE, Hoi An, VIETNAM, pp. 178-183.
View/Download from: Publisher's site
View description>>

In gain-scheduling control the linear fractional transformation (LIFT) model is applied extensively to describe nonlinear plants. The equivalent representation of the nonlinear state space model by a linear model and a simple nonlinear feedback connectio

Phuong, NM & Tuan, HD 1970, 'Clustering in a Fixed Manifold to Detect Groups of Genes with Similar Expression Patterns', 2nd International Conference on Bioinformatics Research and Development, International Conference on Bioinformatics Research and Development, Springer Berlin Heidelberg, Vienna, Austria, pp. 32-42.
View/Download from: Publisher's site
View description>>

Clustering genes into groups that exhibit similar expression patterns is one of the most fundamental issues in microarray data analysis. In this paper, we present a normalized Expectation-Maximization (EM) approach for the problem of gene-based clusterin

Piccardi, M, Gunes, H & Otoom, AF 1970, 'Maximum-likelihood dimensionality reduction in gaussian mixture models with an application to object classification', 2008 19th International Conference on Pattern Recognition, 2008 19th International Conference on Pattern Recognition (ICPR), IEEE, Tampa, FL, USA, pp. 1-4.
View/Download from: Publisher's site
View description>>

Accurate classification of objects of interest for video surveillance is difficult due to occlusions, deformations and variable views/illumination. The adopted feature sets tend to overcome these issues by including many and complementary features; however, their large dimensionality poses an intrinsic challenge to the classification task. In this paper, we present a novel technique providing maximum-likelihood dimensionality reduction in Gaussian mixture models for classification. The technique, called hereafter mixture of maximum-likelihood normalized projections (mixture of ML-NP), was used in this work to classify a 44-dimensional data set into 4 classes (bag, trolley, single person, group of people). The accuracy achieved on an independent test set is 98% vs. 80% of the runner-up (MultiBoost/AdaBoost).

Piccardi, M, Gunes, H, Otoom, AF & IEEE 1970, 'Maximum-Likelihood Dimensionality Reduction in Gaussian Mixture Models with an Application to Object Classification', 19TH INTERNATIONAL CONFERENCE ON PATTERN RECOGNITION, VOLS 1-6, pp. 2986-2989.

PRADABPET, C, YOSHIZAWA, S, MIYANAGA, Y & DEJHAN, K 1970, 'New PAPR Reduction in OFDM System Using Hybrid of PTS-APPR Methods with Coded Side Information Technique', IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, International Workshop on Smart Info-Media Systems (SISB 2007), Institute of Electronics, Information and Communications Engineers (IEICE), Bangkok, THAILAND, pp. 2973-2979.
View/Download from: Publisher's site

Pradabpet, C, Yoshizawa, S, Miyanaga, Y, Chivapreecha, S & Dejhan, K 1970, 'New PTS Method with Coded Side Information Technique for PAPR Reduction in OFDM Systems', 2008 International Symposium on Communications and Information Technologies, 2008 International Symposium on Communications and Information Technologies (ISCIT), IEEE.
View/Download from: Publisher's site

Qiang Wu, Chunhua Du, Jie Yang, Xiangjian He & Yan Chen 1970, 'Pedestrian detection using hybrid statistical feature', 2008 IEEE 10th Workshop on Multimedia Signal Processing, 2008 IEEE 10th Workshop on Multimedia Signal Processing (MMSP), IEEE, Cairns, Queensland, Australia, pp. 101-106.
View/Download from: Publisher's site
View description>>

A novel approach for walking people detection is proposed in this paper, which is inspired by the idea of Gait Energy Image (GEI). Unlike most of common human detection methods where usually a trained detector scans a single image and then generates a detection result, the proposed method detects people on a sequence of silhouettes which contain both appearance characteristics and motion characteristics. Thus, our method is more robust. Encouraging experimental results are obtained based on CASIA Gait Database and the additional nonhuman objects data. © 2008 IEEE.

Raad, IS & Huang, X 1970, 'Analytical Study of the Rotation Spreading Matrix of Block Spread OFDM with MMSE Equalization', 2008 3rd International Conference on Information and Communication Technologies: From Theory to Applications, Communication Technologies: from Theory to Applications (ICTTA), IEEE, Damascus, SYRIA, pp. 2345-2349.
View/Download from: Publisher's site

Raad, IS & Huang, X 1970, 'Higher Order Parallel Concatenated Spreading Matrices OFDM', 2008 3rd International Conference on Information and Communication Technologies: From Theory to Applications, Communication Technologies: from Theory to Applications (ICTTA), IEEE, Damascus, SYRIA, pp. 2350-2355.
View/Download from: Publisher's site

Rahali, E, Chaczko, Z, Agbinya, JI & Chiu, C 1970, 'Business Process Re-engineering in Saudi Arabia: A Survey of Understanding and Attitudes.', BroadCom, International Conference of Broadband Communication, Information Technology and Biomedical Applications, IEEE Computer Society, Pretoria, Gauteng, South Africa, pp. 148-155.
View/Download from: Publisher's site
View description>>

This survey was conducted in the Kingdom of Saudi Arabia (KSA) to investigate the level of awareness of BPR. Respondents (customers, employees, and managers) had different educational backgrounds and were from private and public sectors. Findings of the study indicate a general awareness of BPR in KSA. sustain sales growth.

Rahman, SA, Zhang, N & Zhu, J 1970, 'Modeling and simulation of an energy management system for plug-in hybrid electric vehicles', 2008 Australasian Universities Power Engineering Conference, AUPEC 2008, Australasian Universities Power Engineering Conference, IEEE, Sydney, Australia, pp. 1-6.
View description>>

This paper presents modeling, control strategy and simulation results of an energy management strategy (EMS) for a specific Plug-in Hybrid Electric Vehicle (PHEV). A good control strategy is required among components, such as the Energy Storage System, an Electric Motor, a Power Control Unit, and an Internal Combustion Engine in order to ensure that the vehicle achieve an improvement in energy efficiency, reduction in emissions, fuel use, weight and cost. In this work, firstly, through a power flow analysis, the vehicle components are sized to meet the expected power and energy requirements of a typical 5- passenger car. Then, the model is tested numerically in the MATLAB/SIMULINK environment using the Highway Fuel Economy Test drive cycle with the proposed EMS. The accuracy of the model is verified by a comparison between the simulation results from a specific PHEV code and Advanced Vehicle Simulator (ADVISOR) Hybrid Electric Vehicle (HEV) model. The simulation results of the two different HEV models are compared and the pros and cons discussed. © 2008 Australasian Universities Power Engineering Conference (AUPEC'08).

Rosberg, Z, Liu, RP, Dong, AY, Le, TD & Jha, S 1970, 'ARQ with Implicit and Explicit ACKs in Wireless Sensor Networks.', GLOBECOM, IEEE Global Telecommunications Conference (GLOBECOM 08), IEEE, New Orleans, LA, pp. 50-55.
View/Download from: Publisher's site

Saesue, W, Jian Zhang & Chun Tung Chou 1970, 'Hybrid frame-recursive block-based distortion estimation model for wireless video transmission', 2008 IEEE 10th Workshop on Multimedia Signal Processing, 2008 IEEE 10th Workshop on Multimedia Signal Processing (MMSP), IEEE, Cairns, QLD, pp. 774-779.
View/Download from: Publisher's site
View description>>

In wireless environments, video quality can be severely degraded due to channel errors. Improving error robustness towards the impact of packet loss in error-prone network is considered as a critical concern in wireless video networking research. Data pa

Sharp, I, Yu, K & Guo, YJ 1970, 'Performance Analysis of Bandlimited TOA Estimation Using Peak Tracking', 2008 IEEE 68th Vehicular Technology Conference, 2008 IEEE 68th Vehicular Technology Conference (VTC 2008-Fall), IEEE.
View/Download from: Publisher's site
View description>>

This paper presents the performance analysis of time-of-arrival (TOA) measurements by employing bandlimited radio signals. We choose one of the practical TOA estimation methods, peak tracking for study. First, two simplified models, i.e. the hyperbolic and Gaussian models are introduced to approximate the correlation diagram (correlogram) for ease of performance analysis. It is shown that the two models accurately approximate the true bandlimited correlogram especially around the peak. Concise expressions of the TOA estimation errors are derived for either Gaussian measurement noise or multipath interference when using bandlimited signals. The analytical results can be readily exploited to assist the design of TOA based positioning systems using peak tracking algorithm under bandwidth constraints. ©2008 IEEE.

Shen, C, Paisitkriangkrai, S & Zhang, J 1970, 'Face detection from few training examples', 2008 15th IEEE International Conference on Image Processing, 2008 15th IEEE International Conference on Image Processing - ICIP 2008, IEEE, San Diego, CA, pp. 2764-2767.
View/Download from: Publisher's site

Shi, X, Yoshizawa, S & Miyanaga, Y 1970, 'Evaluation and implementation of quasi-cyclic LDPC codes for IEEE802.11n based MIMO-OFDM system', 2008 IEEE Conference on Soft Computing in Industrial Applications, 2008 IEEE Conference on Soft Computing in Industrial Applications (SMCia), IEEE, Muroran, JAPAN, pp. 277-280.
View/Download from: Publisher's site

Shingo Yoshizawa, Kazuto Nishi & Yoshikazu Miyanaga 1970, 'Reconfigurable two-dimensional pipeline FFT processor in OFDM cognitive radio systems', 2008 IEEE International Symposium on Circuits and Systems (ISCAS), 2008 IEEE International Symposium on Circuits and Systems (ISCAS), IEEE.
View/Download from: Publisher's site

Shingo Yoshizawa, Yasushi Yamauchi & Yoshikazu Miyanaga 1970, 'A complete pipelined MMSE detection architecture in a 4x4 MIMO-OFDM receiver', 2008 IEEE International Symposium on Circuits and Systems (ISCAS), 2008 IEEE International Symposium on Circuits and Systems (ISCAS), IEEE.
View/Download from: Publisher's site

Su, SW, Celler, BG, Savkin, AV, Nguyen, HT, Cheng, TM, Guo, Y, Wang, L & IEEE 1970, 'Portable sensor based dynamic estimation of human oxygen uptake via nonlinear multivariable modelling', 2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Vols 1-8, IEEE Engineering in Medicine and Biology Society Annual Conference, IEEE, Vancouver, Canada, pp. 2431-2434.
View/Download from: Publisher's site
View description>>

Noninvasive portable sensors are becoming popular in biomedical engineering practice due to its ease of use. This paper investigates the estimation of human oxygen uptake (VO2) of treadmill exercises by using multiple portable sensors (wireless heart rate sensor and triaxial accelerometers). For this purpose, a multivariable Hammerstein model identification method is developed. Well designed PRBS type of exercises protocols are employed to decouple the identification of linear dynamics with that of nonlinearities of Hammerstein systems. The support vector machine regression is applied to model the static nonlinearities. Multivariable ARX modelling approach is used for the identification of dynamic part of the Hammerstein systems. It is observed the obtained nonlinear multivariable model can achieve better estimations compared with single input single output models. The established multivariable model has also the potential to facilitate dynamic estimation of energy expenditure for outdoor exercises, which is the next research step of this study.

Su, SW, Nguyen, H, Ha, QP & IEEE 1970, 'Integral Controller Design for Nonlinear Systems Using Inverse Optimal Control', 2008 10TH INTERNATIONAL CONFERENCE ON CONTROL AUTOMATION ROBOTICS & VISION: ICARV 2008, VOLS 1-4, International Conference on Control, Automation, Robotics and Vision, Research Publishinh Services, Hanoi, Vietnam, pp. 2154-2158.
View/Download from: Publisher's site
View description>>

This paper proposes an integral controller design scheme for nonlinear systems based on optimal control and the passivity theorem in order to suppress the effect of external disturbances. The main strategy is to augment an optimal controller with a PI type controller. To guarantee the proposed controller has a desired stability margin, the passivity-based design method is introduced. Here, the inverse optimal control technique is employed to avoid the need of solving a Hamilton- Jacobi equation. An illustrative example is given to show the design procedure and the controller effectiveness.

Tapson, J, Hamilton, TJ, Jin, C & van Schaik, A 1970, 'Self-tuned regenerative amplification and the hopf bifurcation', 2008 IEEE International Symposium on Circuits and Systems (ISCAS), 2008 IEEE International Symposium on Circuits and Systems (ISCAS), IEEE, Seattle, WA, pp. 1768-+.
View/Download from: Publisher's site

Thalakotuna, DNP, Tilakaratne, TAT, Jayasinghe, YBMS, Silva, THKM & Munasinghe, SR 1970, 'Remote Monitoring and controlling system for a water purification plant', 2008 4th International Conference on Information and Automation for Sustainability, 2008 4th International Conference on Information and Automation for Sustainability (ICIAFS), IEEE, pp. 372-377.
View/Download from: Publisher's site
View description>>

In this paper we are presenting a low cost, locally developed customized monitoring and controlling system for a water purification plant. This system can facilitate monitoring and controlling of the entire plant from a single location. Apart from the major functions of monitoring and controlling through a GUI, additional functionalities such as providing remote terminals to the management via a LAN, generating reports, keeping logs in historical database are provided through the system. © 2008 IEEE.

Thalakotuna, DNP, Tilakaratne, TAT, Jayasinghe, YBMS, Silva, THKM & Munasinghe, SR 1970, 'Remote Monitoring and controlling system for a water purification plant', 2008 4TH INTERNATIONAL CONFERENCE ON INFORMATION AND AUTOMATION FOR SUSTAINABILITY (ICIAFS), 4th International Conference on Information and Automation for Sustainability, IEEE, Colombo, SRI LANKA, pp. 49-+.

Thi, TH, Lu, S & Zhang, J 1970, 'Self-Calibration of Traffic Surveillance Camera using Motion Tracking', 2008 11th International IEEE Conference on Intelligent Transportation Systems, 2008 11th International IEEE Conference on Intelligent Transportation Systems (ITSC), IEEE, Beijing, China, pp. 304-309.
View/Download from: Publisher's site
View description>>

A statistical and computer vision approach using tracked moving vehicle shapes for auto-calibrating traffic surveillance cameras is presented. Vanishing point of the traffic direction is picked up from Linear Regression of all tracked vehicle points. Pre

Thi, TH, Robert, K, Lu, S & Zhang, J 1970, 'Vehicle Classification at Nighttime Using Eigenspaces and Support Vector Machine', 2008 Congress on Image and Signal Processing, 2008 Congress on Image and Signal Processing, IEEE, Sanya, Hainan, pp. 422-426.
View/Download from: Publisher's site
View description>>

A robust framework to classify vehicles in nighttime traffic using vehicle eigenspaces and support vector machine is presented. In this paper, a systematic approach has been proposed and implemented to classify vehicles from roadside camera video sequenc

Tran, NN, Tuan, HD & Nguyen, HH 1970, 'Superimposed Training Designs for Spatially Correlated MIMO-OFDM Systems', IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference, IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference, IEEE, New Orleans, USA, pp. 1-6.
View/Download from: Publisher's site
View description>>

Optimal training design and channel estimation for spatially correlated multiple-input multiple-output systems with orthogonal frequency-division multiplexing (MIMO-OFDM) is still an open research topic of great interest. Only one asymptotic design for a

Tran, TH, Ha, QP & IEEE 1970, 'Fast Algorithm for UGV Wheel-Terrain Interaction Analysis', 2008 10TH INTERNATIONAL CONFERENCE ON CONTROL AUTOMATION ROBOTICS & VISION: ICARV 2008, VOLS 1-4, International Conference on Control, Automation, Robotics and Vision, IEEE, Hanoi, Vietnam, pp. 674-680.
View/Download from: Publisher's site
View description>>

On-line prediction of unmanned ground vehicle (UGV) behaviour during interactions with terrain is essential for autonomous and safe operations of skid-steering UGVs. This paper presents a fast and accurate algorithm for a new interaction model to predict performance of a UGV running on a particular terrain. By approximating nonlinear relations involved in the interaction between the vehicle and terrain, a closed form of the interaction model is obtained to enable on-line computation. The minimum absolute error criteria are applied to secure accuracy for the proposed method. The development is compared with the other models in terms of both computation speed and accuracy. © 2008 IEEE.

Tu, P, Huang, X & Dutkiewicz, E 1970, 'Adaptive filtering for selective subband transmission based on interference detection', Proceedings of the 1st ACM international workshop on Heterogeneous sensor and actor networks, MobiHoc08: The Ninth ACM International Symposium on Mobile Ad Hoc Networking and Computing, ACM, pp. 95-100.
View/Download from: Publisher's site
View description>>

In a shared radio spectrum environment, multiple systems may interfere with each other. In this paper we propose an adaptive filtering method to suppress interference and select the most suitable subbands according to predetermined interference thresholds. Two methods to determine these interference thresholds in Gaussian and multipath fading channels are introduced. The adaptive filtering method enables a system to dynamically use frequency subbands with-out employing frequency hopping techniques. The flexible received signal bandwidth with difierent number of subbands provides great potential for systems to coexist with each other, resulting in higher spectrum utilization effciency. To verify the efiectiveness of the proposed adaptive filtering method, the system bit error rates (BERs) under difierent interference conditions are simulated and compared. © 2008 ACM.

Tu, P, Huang, X & Dutkiewicz, E 1970, 'Adaptive Subband Selection in OFDM-Based Cognitive Radios for Better System Coexistence', 2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008), 2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom), IEEE, Singapore, SINGAPORE, pp. 78-83.
View/Download from: Publisher's site

Tu, P, Huang, X & Dutkiewicz, E 1970, 'Subband Adaptive Filtering for Efficient Spectrum Utilization in Cognitive Radios', 2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008), 2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom), IEEE, Singapore, SINGAPORE, pp. 266-269.
View/Download from: Publisher's site

Tune, P & Veitch, D 1970, 'Towards optimal sampling for flow size estimation', Proceedings of the 8th ACM SIGCOMM conference on Internet measurement, IMC08: Internet Measurement Conference, ACM, ACM, pp. 243-256.
View/Download from: Publisher's site

Wang Zhengguang, Jin Jianxun, Guo Youguang, Zhan Yuedong & Zhu Jianguo 1970, 'Modeling and simulation of PMSM control system based on SVPWM', 2008 27th Chinese Control Conference, 2008 Chinese Control Conference (CCC), IEEE, Kunming, China, pp. 724-728.
View/Download from: Publisher's site
View description>>

The paper introduces the basic principle of space vector pulse width modulation simply and expatiates a method for implementing space vector pulse width modulation in detail based on MATLAB/SIMULINK, designs modeling and simulation of AC servo system with PMSM (Permanent Magnet Synchronous Motor), the simulation results show that the model is effective, and the method provides a base for both software and hardware design of an actual PMSM.

Wang, JC-P, Franklin, DR, Abolhasan, M, Safaei, F & IEEE 1970, 'Characterising the Interactions Between Unicast and Broadcast in IEEE 802.11 Ad Hoc Networks', ATNAC: 2008 AUSTRALASIAN TELECOMMUNICATION NETWOKS AND APPLICATIONS CONFERENCE, ATNAC 2008, In Australasian Telecommunications Networking and Application Conference (ATNAC), Adelaide, SA, pp. 180-185.
View/Download from: Publisher's site
View description>>

This paper investigates the relative performance of unicast and broadcast traffic traversing a one-hop ad hoc network utilising the 802.11 DCF. An extended Markov model has been developed and validated through computer simulation, which successfully predicts the respective performance of unicast and broadcast in a variety of mixed traffic scenarios. Under heavy network traffic conditions, a significant divergence is seen to develop between the performance of the two traffic classes - in particular, when network becomes saturated, unicast traffic is effectively given higher precedence over broadcast. As a result, the network becomes dominated by unicast frames, leading to poor rates of broadcast frame delivery.

Wang, L, Su, SW, Chan, GSH, Celler, BG, Cheng, TA & Savkin, AV 1970, 'Nonlinear modeling of cardiovascular response to exercise', BIOSIGNALS 2008: PROCEEDINGS OF THE FIRST INTERNATIONAL CONFERENCE ON BIO-INSPIRED SYSTEMS AND SIGNAL PROCESSING, VOL 1, International Conference on Bio-inspired Systems and Signal Processing, Institute for Systems and Technologies of Information, Madeira, Portugal, pp. 40-46.

Wang, S, Guo, N, Ren, Z, Qiu, J, Zhu, JG, Guo, Y & Wang, Y 1970, 'Development of finite element analysis package for induction machines', 2008 Australasian Universities Power Engineering Conference, AUPEC 2008, Australasian Universities Power Engineering Conference, University of New South Wales, Sydney, Australia, pp. 1-6.
View description>>

In this paper, a software package of finite element (FE) analysis for induction machines is presented. The back-EMF in windings is expressed by magnetic vector potential, which is used to couple with transient finite element analysis. The equations of drive circuit and rotor bars are described by loop circuit equations. The pre-processing and post-processing of this package are developed based on AutoCAD. The FE model and some machine parameters can be input by friendly graphical user interfaces. The calculated magnetic field distribution and transient results can be shown in AutoCAD or graphical interfaces. © 2008 Australasian Universities Power Engineering Conference (AUPEC'08).

Wang, S, Liu, X, Qiu, J, Zhu, JG, Guo, Y & Lin, ZW 1970, 'Robust Optimization in HTS Cable Based on DEPSO and Design for Six Sigma', 2008 IEEE Industry Applications Society Annual Meeting, 2008 IEEE Industry Applications Society Annual Meeting (IAS), IEEE, Edmonton, Canada, pp. 1-5.
View/Download from: Publisher's site
View description>>

The non-uniform AC current distribution among the multi-layer conductors in a high-temperature superconducting (HTS) cable reduces the current capacity and increases the AC loss. In this paper, Particle swarm optimization coupled with differential evolution operator (DEPSO) has been applied in structural optimization of HTS cables. While the existence of fluctuation in design variables or operation conditions has a great influence on the cable quality, in order to eliminate the effects of parameter perturbations in design and improve the design efficiency, a robust design method based on design for six sigma (DFSS) is applied in this paper. The optimization solutions show that the proposed optimization procedure can not only achieve a uniform current distribution, but also improve significantly the reliability and robustness of the HTS cable quality. © 2008 IEEE.

Wang, S, Liu, X, Qiu, J, Zhu, JG, Guo, Y & Lin, ZW 1970, 'Robust Optimization in HTS Cable Based on DEPSO and Design for Six Sigma', 2008 IEEE INDUSTRY APPLICATIONS SOCIETY ANNUAL MEETING, VOLS 1-5, IEEE Industry-Applications-Society Annual Meeting, IEEE, Alberta, CANADA, pp. 2507-+.

Wang, Y & Zhu, J 1970, 'Modelling and implementation of an improved DSVM scheme for PMSM DTC', Proceedings of the 11th International Conference on Electrical Machines and Systems, ICEMS 2008, 11th International Conference on Electrical Machines and Systems, WORLD PUBLISHING CORPORATION, Huazhong Univ Sci & Technol, Wuhan, PEOPLES R CHINA, pp. 1042-1046.
View description>>

The basic direct torque control (DTC) scheme may cause undesired torque, flux and current ripples because of the small number of applicable voltage vectors. The discrete space vector modulation (DSVM) method was proposed for DTC to overcome this problem by applying more vectors in one interval. In this paper, after a brief review of the primary concept of DSVM DTC technique, a new scheme of DSVM DTC for PMSM is proposed with a new set of switching tables taking into account the motor speed and the absolute values of torque and flux feedback errors. In one fixed sampling time interval, three vectors are applied to the motor including the two null vectors. The vector application sequence is investigated and an optimal algorithm is developed to reduce the switching loss and torque ripple. Simulation and experiments on the improved DSVM DTC are carried out and compared with those on the basic DTC scheme.

Xiaonan Shi, Shingo Yoshizawa & Yoshikazu Miyanaga 1970, 'Performance evaluation of quasi-cyclic LDPC codes for IEEE802.11n based MIMO-OFDM systems', 2008 3rd International Symposium on Communications, Control and Signal Processing, 2008 3rd International Symposium on Communications, Control and Signal Processing (ISCCSP), IEEE, St Julians, MALTA, pp. 1330-1333.
View/Download from: Publisher's site

Xu, M, Jin, JS & Luo, S 1970, 'Personalized video adaptation based on video content analysis', Proceedings of the 9th International Workshop on Multimedia Data Mining: held in conjunction with the ACM SIGKDD 2008, KDD08: The 14th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, ACM, pp. 26-35.
View/Download from: Publisher's site
View description>>

Personalized video adaptation is expected to satisfy individual users' needs on video content. Multimedia data mining plays a significant role of video annotation to meet users' preference on video content. In this paper, a comprehensive solution for personalized video adaptation is proposed based on video content mining. Video content mining targets both cognitive content and affective content. Cognitive content refers to those semantic events, which are very specific for the video domains. Sometimes, users might prefer "emotional decision" to select their interested video content. Therefore, we introduce affective content which causes audiences' strong reactions. For cognitive content mining, features are extracted from multiple modalities. Machine learning module is further performed to get some middle-level features, such as specific audio sounds, semantic video shots and so on. Those middle-level features are used to detect cognitive content by using Hidden Markov Models. For affective content mining, affective content is detected with three affective levels: "low", "medium" and "high". Considering affective levels might have no sharp boundaries, fuzzy c mean clustering is used on low-level features to simulate user's perceptions. The adaptation is later implemented based on MPEG-21 Digital Item Adaptation framework. One of the challenges is how to quantify users' preference on video content. Information Entropy (IE) and Membership Functions are calculated to decide priorities for resource allocation for cognitive content and affective content respectively. Copyright 2008 ACM.

Xu, M, Jin, JS, Luo, S & Duan, L 1970, 'Hierarchical movie affective content analysis based on arousal and valence features', Proceedings of the 16th ACM international conference on Multimedia, MM08: ACM Multimedia Conference 2008, ACM, pp. 677-680.
View/Download from: Publisher's site
View description>>

Emotional factors directly reflect audiences' attention, evaluation and memory. Affective contents analysis not only create an index for users to access their interested movie segments, but also provide feasible entry for video highlights. Most of the work focus on emotion type detection. Besides emotion type, emotion intensity is also a significant clue for users to find their interested content. For some film genres (Horror, Action, etc), the segments with high emotion intensity have the most possibilities to be video highlights. In this paper, we propose a hierarchical structure for emotion categories and analyze emotion intensity and emotion type by using arousal and valence related features hierarchically. Firstly, High, Medium and Low are detected as emotion intensity levels by using fuzzy c-mean clustering on arousal features. Fuzzy clustering provides a mathematical model to represent vagueness, which is close to human perception. After that, valence related features are used to detect emotion types (Anger, Sad, Fear, Happy and Neutral ). Considering video is continuous time series data and the occurrence of a certain emotion is a ted by recent emotional history, Hidden Markov Models (HMMs) are used to capture the context information. Experimental results shows the movie segments with high emotion intensity cover over 80% of the movie highlights in Horror and Action movies and the hierarchical method outperforms the one-step method on emotion type detection. Meanwhile, it is exible for user to pick up their favorite a ective content by choosing both emotion intensity levels and emotion types. Copyright 2008 ACM.

Xu, M, Luo, S & Jin, JS 1970, 'Affective Content Detection by Using Timing Features and Fuzzy Clustering', Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Springer Berlin Heidelberg, pp. 685-692.
View/Download from: Publisher's site
View description>>

Emotional factors directly reflect audiences' attention, evaluation and memory. Movie affective content detection attracts more and more research efforts. Most of the existing work focus on developing efficient affective features or implementing feasible pattern recognition algorithms. However, some important issues are ignored. 1) Most of the feature used in affective content detection are traditional visual/audio features. While affective content detection needs those features which are directly related to emotions. 2) affective content is a subjective concept which heavily depends on human perception. It is hard to find a clear boundary for various emotion categories. While most of the existing methods utilize hard pattern recognition algorithm to generate clear boundary for emotion categories. In this paper, we consider the above two issues by two aspects. 1) We employ timing features which are important of films and an important part of films' power to affect viewers' feelings and emotions. Meanwhile, audio features are used together with timing features to detect affective content from multiple modalities. 2) Fuzzy clustering is used in this paper to map affective features to affective content. Fuzzy logic provides a mathematical model to represent vagueness, which is close to human perception. Experimental results shows the proposed method is effective and efficient. © 2008 Springer.

Yan Chen, Qiang Wu, Xiangjian He, Chunhua Du & Jie Yang 1970, 'Extracting key postures using radon transform', 2008 23rd International Conference Image and Vision Computing New Zealand, 2008 23rd International Conference Image and Vision Computing New Zealand (IVCNZ), IEEE, Christchurch, New Zealand, pp. 1-5.
View/Download from: Publisher's site
View description>>

Human key posture extraction will benefit for human action recognition, human action retrieval, human behaviour understanding and so on. This paper proposes an approach to select key postures from a human action video based on Radon transform. Cluster is used on the Radon transform to select the final key postures of human action video. The approach does not require motion extraction from the human action video. The experiments results show that the proposed approach is efficient. © 2008 IEEE.

Yan Chen, Qiang Wu, Xiangjian He, Wenjing Jia & Hintz, T 1970, 'A modified Mahalanobis distance for human detection in out-door environments', 2008 First IEEE International Conference on Ubi-Media Computing, 2008 First IEEE International Conference on Ubi-media Computing (U-Media 2008), IEEE, Lanzhou, China, pp. 243-248.
View/Download from: Publisher's site
View description>>

This paper proposes a novel method for human detection from static images based on pixel structure of input images. Each image is divided into four parts, and a weight is assigned to each part of the image. In training stage, all sample images including human images and non-human images are used to construct a Mahalanobis distance map through statistically analyzing the difference between the different blocks on each original image. A projection matrix will be created with Linear Discriminant Method (LDM) based on the Mahalanobis distance map. This projection matrix will be used to transform multidimensional feature vectors into one dimensional feature domain according to a pre-calculated threshold to distinguish human figures from non-human figures. In comparison with the method without introducing weights, the proposed method performs much better. Encouraging experimental results have been obtained based on MIT dataset and our own dataset. © 2008 IEEE.

Yan Ying, Zhu Jianguo, Guo Youguang & Jin Jianxun 1970, 'Numerical simulation of a PMSM model considering saturation saliency for initial rotor position estimation', 2008 27th Chinese Control Conference, 2008 Chinese Control Conference (CCC), IEEE, Kunming, China, pp. 114-118.
View/Download from: Publisher's site
View description>>

With the wide application of permanent magnet synchronous motors (PMSMs), particularly the surface mounted type, the limitations of the conventional PMSM model have become apparent, in which no saturation saliency is incorporated. As a result, the numerical simulation is not applicable for the initial rotor position estimation, which is vital for sensorless motor operation. To avoid the difficulty for developing new initial rotor position estimation techniques through the process of experimental trial and error, a new PMSM model is presented in this paper. The presented model considers both structural and saturation saliencies, enabling fast and cost-effective numerical trial and error for new initial rotor position detection methods. Unlike the constant apparent inductances in the conventional model, the nonlinear self and mutual incremental inductances in the proposed model are expressed by Fourier series and experimentally determined by a specific method to reflect the structural and saturation saliencies, which exist in both salient- and nonsalient-pole PMSMs. Based on the proposed model and the measured inductance patterns, an initial rotor position estimation scheme is numerically simulated and experimentally tested.

Yang, L, Guo, B & Ni, W 1970, 'A Statistical Speckle Suppression Algorithm for Underwater Laser Image Based on Nonsubsampled Contourlet Transform', 2008 Eighth International Conference on Intelligent Systems Design and Applications, 2008 Eighth International Conference on Intelligent Systems Design and Applications (ISDA), IEEE, TAIWAN, Kaohsiung, pp. 467-472.
View/Download from: Publisher's site

Yeung, CW, Ling, SH, Chan, YH, Leung, FHF & IEEE 1970, 'Restoration of Half-toned Color-Quantized Images using Particle Swarm Optimization with Wavelet Mutation', 2008 IEEE REGION 10 CONFERENCE: TENCON 2008, VOLS 1-4, IEEE Region 10 Conference (TENCON 2008), IEEE, Hyderabad, INDIA, pp. 1844-1849.

Yi Da Xu, R, Junbin Gao & Antolovich, M 1970, 'Novel methods for high-resolution facial image capture using calibrated PTZ and static cameras', 2008 IEEE International Conference on Multimedia and Expo, 2008 IEEE International Conference on Multimedia and Expo (ICME), IEEE, Hannover, GERMANY, pp. 45-48.
View/Download from: Publisher's site

Yiwei Yu, Xiaojing Huang & Eryk Dutkiewicz 1970, 'Block spread OFDMA system with space-time coded MIMO over frequency selective fading channels', 2008 Third International Conference on Communications and Networking in China, 2008 Third International Conference on Communications and Networking in China, IEEE, pp. 464-468.
View/Download from: Publisher's site
View description>>

This paper proposes a block spread orthogonal frequency division multiple access (BS-OFDMA) system with a combined space-time coded multiple-input multiple-out (STC-MIMO) scheme called STC-MIMO BS-OFDMA for transmission over frequency selective fading channels. In this system, a novel block spreading approach is firstly applied to effectively achieve precoding in the OFDMA system with lower complexity for improving the multipath diversity performance. The STC-MIMO is then incorporated to take advantage of the spatial diversity. The signal model and architecture of the proposed system are presented, and simulations are carried out to confirm the expected performance improvement.

Yoshizawa, S & Miyanaga, Y 1970, 'VLSI Architecture of a 4×4 MIMO-OFDM Transceiver for over 1-Gbps Data Transmission', 2008 International Symposium on Communications and Information Technologies, 2008 International Symposium on Communications and Information Technologies (ISCIT), IEEE, Vientiane, LAOS, pp. 422-425.
View/Download from: Publisher's site

Yu, K & Guo, YJ 1970, 'Improving Anchor Position Accuracy for 3-D Localization in Wireless Sensor Networks', 2008 IEEE International Conference on Communications, 2008 IEEE International Conference on Communications, IEEE, pp. 951-955.
View/Download from: Publisher's site
View description>>

Accuracy of ordinary sensor node localization in wireless sensor networks mainly depends on the signal parameter such as time-of-arrival and signal strength estimation errors and the accuracy of the anchor node locations. In this paper a low-complexity but efficient algorithm is derived to improve anchor location accuracy in the presence of both anchor-to-anchor distance and AOA estimates and GPS measurements. Also, a Lenvenberg-Marquardt (LM) optimization based algorithm is developed for accuracy improvement when anchor-to-anchor distance estimates and GPS measurements are provided. Further, we derive the Cramer-Rao lower bound (CRLB) to benchmark the anchor position accuracy. To our knowledge, improving anchor node location accuracy and deriving the CRLB in the presence of both GPS and anchor-to-anchor measurements in 3-D scenarios are not reported in the literature. Simulation results demonstrate that the proposed approaches can improve the anchor position accuracy substantially and that the accuracy of the two developed algorithms approaches the corresponding CRLB. ©2008 IEEE.

Yu, K & Guo, YJ 1970, 'Non-line-of-sight detection based on TOA and signal strength', 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), IEEE.
View/Download from: Publisher's site
View description>>

This paper addresses the problem of identifying NLOS propagation by applying the statistical decision theory. A time-of-arrival (TOA) based method is developed under idealized conditions to provide a performance reference. In the presence of both TOA and received signal strength (RSS) measurements, a joint identification method is derived to efficiently exploit both the TOA and RSS measurements. Analytical expressions for the probability of detection (POD) and the probability of false alarm (PFA) are derived. Simulation results demonstrate that the proposed methods perform well and the joint TOA and RSS based method outperforms the TOA based methods considerably. It is also shown that the analytical results agree with the simulated ones. © 2008 IEEE.

Yu, K & Guo, YJ 1970, 'Robust Localization in Multihop Wireless Sensor Networks', VTC Spring 2008 - IEEE Vehicular Technology Conference, 2008 IEEE Vehicular Technology Conference (VTC 2008-Spring), IEEE, pp. 2819-2823.
View/Download from: Publisher's site
View description>>

In this paper a hybrid localization scheme for multihop wireless sensor networks is presented. At first a relatively dense group of nodes is selected as a base. Next, the multidimensional scaling (MDS) method is applied to localize the group of nodes. Then, the robust quads (RQ) method is employed to localize other nodes, following which we make use of the robust triangle and radio range (RTRR) approach to perform the localization task. The RQ and the RTRR methods are used alternately until no more nodes can be localized by the two approaches. Simulation results demonstrate that the proposed hybrid localization algorithm performs well in terms of both accuracy and success rate of localization. © 2008 IEEE.

Yu, K, Guo, YJ & Oppermann, I 1970, 'Modified Taylor Series Expansion Based Positioning Algorithms', VTC Spring 2008 - IEEE Vehicular Technology Conference, 2008 IEEE Vehicular Technology Conference (VTC 2008-Spring), IEEE, pp. 2656-2660.
View/Download from: Publisher's site
View description>>

In this paper, we propose a modified two stage Taylor series (TS) method for position estimation in a 3-D environment when either the time-difference-of-arrival (TDOA) or the distance measurements are available. It is aimed to improve the convergence performance of the traditional Taylor series method. Simulation results demonstrate that the modified TS method can improve the position estimation convergence considerably. © 2008 IEEE.

Yu, Y, Huang, X & Dutkiewicz, E 1970, 'Block Spread OFDM.A System with Space-Time Coded MIMO over Frequency Selective Fading Channels', 2008 THIRD INTERNATIONAL CONFERENCE ON COMMUNICATIONS AND NETWORKING IN CHINA, VOLS 1-3, 3rd International Conference on Communications and Networking in China, IEEE, Hangzhou, PEOPLES R CHINA, pp. 441-445.

Zhan Yuedong, Guo Youguang, Zhu Jianguo & Wang Hua 1970, 'Comprehensive control of proton exchange membrane fuel cell as backup power supply for UPS', 2008 27th Chinese Control Conference, 2008 Chinese Control Conference (CCC), IEEE, Kunming, China, pp. 646-651.
View/Download from: Publisher's site
View description>>

To improve the performance of a proton exchange membrane fuel cell (PEMFC) stack, it is important to avoid the hydrogen and oxygen/air starvation of electrochemical reaction, prevent the dehydration and drying of the membrane, and track the output power. This paper conducts research in a comprehensive control strategy of the operation parameters of an uninterruptible power system (UPS) with backup PEMFC and battery power sources, such as the thermal management and control of operating temperature, pressures and mass flows of hydrogen and air for the PEMFC stack, switch of the power supply between PEMFC and battery for UPS, and the output power tracking of PEMFC. Based on the dynamic model of the anode and cathode flow system, the models of manifold and the performance curve, a detail model analysis is presented. A comprehensive control method is proposed and applied to the PEMFC system employed for the power source of UPS. The experimental results show that the comprehensive control method can effectively keep constant pressures of the inlet hydrogen and air, automatically switch the power supply between PEMFC and battery, reasonably improve the performance of the PEMFC through thermal management and control of operating temperature, and track the real-time changes of the output power and the distribution of the mass flows of hydrogen and oxygen/air.

Zhan, Y, Guo, Y, Zhu, J & Wang, H 1970, 'Design and analysis of control system of a proton exchange membrane fuel cell directly connected with a DC motor', Proceedings of the 11th International Conference on Electrical Machines and Systems, ICEMS 2008, International Conference on Electrical Machines and Systems, World Publishing Corporation, Wuhan, China, pp. 1706-1710.
View description>>

This paper presents the design and analysis of comprehensive control system of a fuel cell which is directly connected to a DC motor. The fuel cell system consists of a 63-cell 300 W proton exchange membrane fuel cell (PEMFC), a 3-cell lead-acid battery and a conventional DC machine. The comprehensive controller design and analysis of the fuel cell are presented, including the design of the PEMFC generating system, the comprehensive control technique of the PEMFC based on advanced data acquisition hardware and LabVIEW software. Experimental results show that the fuel cell-based DC motor drive system can produce satisfactory performance.

Zhan, Y, Guo, Y, Zhu, J & Wang, H 1970, 'Power Converters and Controllers for UPS Applications with Backup PEM Fuel Cell', 2008 IEEE INDUSTRY APPLICATIONS SOCIETY ANNUAL MEETING, VOLS 1-5, IEEE Industry-Applications-Society Annual Meeting, IEEE, Alberta, CANADA, pp. 2383-+.

Zhan, Y, Guo, Y, Zhu, JG & Wang, H 1970, 'Power Converters and Controllers for UPS Applications with Backup PEM Fuel Cell', 2008 IEEE Industry Applications Society Annual Meeting, 2008 IEEE Industry Applications Society Annual Meeting (IAS), IEEE, Edmonton, Canada, pp. 1-8.
View/Download from: Publisher's site
View description>>

This paper studies the practical cost-effective DC/DC converter, DC/AC inverter and AC/DC rectifier for an uninterruptible power supply (UPS) system with backup proton exchange membrane fuel cell (PEMFC). Furthermore, a comprehensive controller for the PEMFC is designed according to the change of the load, while the energy storage elements, such as battery and ultracapacitor, are chosen in order to compensate the slow dynamic response of PEMFC and to meet the sudden peak load energy demand. The designed power converters can supply high quality power with flexible conversion functions, leading to the establishment of reliable power management for UPS applications. Finally, a suitable control strategy and technique, capable of coping with the change of the load for PEMFC and realizing the energy managements of UPS hybrid system, is implemented. The performances of the proposed power converters and controllers are evaluated by experimental results, showing that the developed UPS system with backup PEMFC and battery power sources is suitable for industry applications.

Zhan, Y, Zhu, J, Guo, Y & Wang, H 1970, 'Performance analysis and evaluation of proton membrane exchange fuel cells', 2008 Australasian Universities Power Engineering Conference, AUPEC 2008, Australasian Universities Power Engineering Conference, University of New South Wales, Sydney, pp. 2378-2383.
View description>>

This paper presents the performance analysis of proton exchange membrane fuel cells (PEMFCs) and evaluation of the fuel cells by using a current density extent (D) and a steady-state error rate (S) as the steady-state performance indexes based on the effects and sensitivity of the fuel cell parameters on the polarization curve. Excluding the non-linear parts of the curve, which are the activation polarization loss and the concentration polarization loss, the steady-state performance indexes, i.e. D and S, are defined and their application for both theoretical analysis and engineering practice are discussed. The presented steady-state performance indexes have been applied for analysis and evaluation of two typical fuel cells and they are found as suitable for evaluating the performance of the fuel cells. © 2008 Australasian Universities Power Engineering Conference (AUPEC'08).

Zhan, Y, Zhu, J, Guo, Y & Wang, H 1970, 'Performance analysis and improvement of a proton exchange membrane fuel cell using comprehensive intelligent control', Proceedings of the 11th International Conference on Electrical Machines and Systems, ICEMS 2008, 11th International Conference on Electrical Machines and Systems, WORLD PUBLISHING CORPORATION, Huazhong Univ Sci & Technol, Wuhan, PEOPLES R CHINA, pp. 2378-2383.
View description>>

To analyze and improve the performance of proton exchange membrane fuel cell (PEMFC) stack, this paper conducts research in intelligent comprehensive control of the operational parameters, such as the operating temperature, pressure, mass flows of hydrogen and air for the PEMFC stack, current density, the exhaust emission quantity of reactant gas, and humidity of the hydrogen and air/oxygen. A detailed analysis is presented about the factors which affect the performance of PEMFC stack, including the operating temperature and pressure, the activation polarization loss, Ohmic loss, concentration polarization loss and the influences of the leakage loss, gas crossover, internal current, exchange current density, limiting current density, and internal structures of the stack. An intelligent comprehensive control strategy is proposed and applied to a 500 W PEMFC system for an uninterruptible power system with backup PEMFC and battery power sources. The experimental results show that the current-voltage performance for the PEMFC stack has been improved comparing with the normal performance using the conventional PI control.

Zhan, Y, Zhu, J, Guo, Y & Wang, H 1970, 'Performance Analysis and Improvement of a Proton Exchange Membrane Fuel Cell Using Intelligent Comprehensive Control', Proceedings of the 11th International Conference on Electrical Machines and Systems (ICEMS), International Conference on Electrical Machines and Systems, World Publishing Corporation, Wuhan, China, pp. 2578-2583.
View description>>

To analyze and improve the performance of proton exchange membrane fuel cell (PEMFC) stack, this paper conducts research in intelligent comprehensive control of the operational parameters, such as the operating temperature, pressure, mass flows of hydrogen and air for the PEMFC stack, current density, the exhaust emission quantity of reactant gas, and humidity of the hydrogen and air/oxygen. A detailed analysis is presented about the factors which affect the performance of PEMFC stack, including the operating temperature and pressure, the activation polarization loss, Ohmic loss, concentration polarization loss and the influences of the leakage loss, gas crossover, internal current, exchange current density, limiting current density, and internal structures of the stack. An intelligent comprehensive control strategy is proposed and applied to a 500 W PEMFC system for an uninterruptible power system with backup PEMFC and battery power sources. The experimental results show that the current-voltage performance for the PEMFC stack has been improved comparing with the normal performance using the conventional PI control.

Zhang, Y, Natkunarajah, R, Su, SW & Nguyen, J 1970, 'Model Predictive Controller Design for Static Var Compensator', 8th Asia-Pacific Conference on Control and Measurement, Asia-Pacific Conference on Control and Measurement, Nanjing University of Aeronautics & Astronautics, Harbin, P.R.China, pp. 100-104.

Zhang, Z, Gunes, H & Piccardi, M 1970, 'Tracking People in Crowds by a Part Matching Approach', 2008 IEEE Fifth International Conference on Advanced Video and Signal Based Surveillance, 2008 IEEE Fifth International Conference on Advanced Video and Signal Based Surveillance (AVSS), IEEE, Santa Fe, NM, USA, pp. 88-95.
View/Download from: Publisher's site

Zhang, Z, Gunes, H, Piccardi, M & IEEE 1970, 'AN ACCURATE ALGORITHM FOR HEAD DETECTION BASED ON XYZ AND HSV HAIR AND SKIN COLOR MODELS', 2008 15TH IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, VOLS 1-5, IEEE International Conference on Image Processing, IEEE, San Diego, CA, USA, pp. 1644-1647.
View/Download from: Publisher's site
View description>>

Head detection in images and videos plays an important role in a wide range of computer vision and multimedia applications. In this paper, we propose a new head detection algorithm that is capable of handling significantly variable conditions in terms of viewpoint (i.e. frontal, profile, back view, from -180 degrees to +180 degrees), tilt angle (i.e. from horizontal to aerial), scale and resolution. To this aim, we built a new model for the head based on appearance distributions and shape constraints. The appearance distribution models the colors of hair and skin by sets of Gaussian mixtures in the XYZ and HSV color spaces. The shape constraint fits an elliptical model to the candidate region and compares its parameters with priors based on the human anatomy. This presents a pixel-level measurement of accuracy for the proposed algorithm both prior and after applying the spatial constraints referenced by the elliptical model. The excellent accuracy at both levels confirms the accuracy of the appearance model and the appropriateness of the spatial and topological process.

Zheng, L, Hoang, DB & IEEE 1970, 'Applying graph coloring in resource coordination for a high-density wireless environment', 2008 IEEE 8TH INTERNATIONAL CONFERENCE ON COMPUTER AND INFORMATION TECHNOLOGY, VOLS 1 AND 2, IEEE International Conference on Computer and Information Technology, IEEE, Sydney, Australia, pp. 664-669.
View/Download from: Publisher's site
View description>>

In a high density wireless environment, channel interference among users of many overlapped Basic Service Sets (OBSSs) is a serious problem. Our solution for the problem relies on a resource coordination scheme that utilizes the spatial distribution of the transceivers for channel reuse and time-slot division multiplexing for downlink transmission sharing among all participating BSSs. In this paper we show that an OBSS environment can be modeled by a planar graph and the OBSS group coordination assignment problem can be considered as a vertex coloring problem whose solution involves at most four colors. The graph coloring solution algorithm for the OBSS group coordination assignment is presented. The actual coloring is demonstrated, using a heuristics of Maximum Degree First. Performance simulation results of the coordination algorithm are also presented.

Zheng, L, Jin, J, Guo, Y & Zhu, J 1970, 'Electromagnetic Analysis of High Temperature Superconducting Linear Synchronous Motor', Proceedings of the 11th International Conference on Electrical Machines and Systems (ICEMS), International Conference on Electrical Machines and Systems, World Publishing Corporation, Wuhan, China, pp. 3453-3458.
View description>>

This paper presents the design and electromagnetic characteristics analysis of a permanent magnet linear synchronous motor (PMLSM). The PMLSM is composed of a primary stator and a secondary mover, which are made up of three-phase copper windings and permanent magnets, respectively. The technical and economic targets of linear motor are directly related to the electromagnetic characteristics. However, the magnetic circuit structure of PMLSM is complex, and the traditional methods, such as magnetic circuit method and graphic method, can not calculate the electromagnetic field distribution accurately. In recent years, the electromagnetic numerical calculation method is increasing of peoplepsilas attention. In order to accurately calculate the magnetic field characteristics and electromagnetic parameters of the PMLSM, finite element analysis (FEA) method based on ANSYS is used to analyze the no-load characteristics and basic load characteristics of the PMLSM. Finally, the actual motor operating characteristics are tested, which proved the validity of the motor design and the analysis method. The work will be to the important basis for the optimization design of a PMLSM and development of a high temperature superconducting (HTS) LSM in the near future.

Zhou, P, He, Y, Sun, D & Zhu, JG 1970, 'Control and Protection of a DFIG-Based Wind Turbine under Unbalanced Grid Voltage Dips', 2008 IEEE Industry Applications Society Annual Meeting, 2008 IEEE Industry Applications Society Annual Meeting (IAS), IEEE, Edmonton, Canada, pp. 1-8.
View/Download from: Publisher's site
View description>>

This paper proposes a new direct power control (DPC) strategy and a novel crowbar protection technique for the doubly fed induction generator (DFIG) used in the wind power generation systems. The main difficulty for a DFIG to ride through severe unbalanced grid voltage dips is the large transient currents induced in the rotor windings, which may damage the ac excitation converter. The proposed DPC is capable of suppressing the transient oscillations of fault currents and electromagnetic torque. The crowbar protection is able to limit the peak values of the fault rotor currents under a preset threshold. Simulation results of a 2MW DFIG system prove that with this control scheme the DFIG is capable of riding through the severe unbalanced grid voltage dips.

Zhu, J, Lu, H, Guo, Y & Lin, Z 1970, 'Development of electromagnetic linear actuators for micro robots (invited)', Proceedings of the 11th International Conference on Electrical Machines and Systems, ICEMS 2008, International Conference on Electrical Machines and Systems, World Publishing Corporation, Wuhan, China, pp. 3673-3679.
View description>>

For micro robotic applications, piezoelectric actuators are widely used, whereas electromagnetic actuators are not favored because of the complex structures and difficult fabrication. On the other hand, electromagnetic actuators have many merits that are suitable for robotic applications, such as relatively large displacement or stroke and no need of high voltage power supply. With the recent fast development of micro precision machining techniques, the fabrication of complex structures is no longer a problem. This paper presents our recent study of developing electromagnetic actuators for micro robotic applications, including a comparison between piezoelectric and electromagnetic actuators, design of two types of electromagnetic actuators, and fabrication and testing of a moving magnet tubular linear actuator.

Bruti-Liberati, N, Martini, F, Piccardi, M & Platen, E 2008, 'A hardware generator of multi-point distributed random numbers for Monte Carlo simulation'.
View description>>

ISSN 1441-8010 www.business.uts.edu.au/qfrc/research/research_papers/rp156.pdf