Ai, Y, Qiu, X & Hansen, CH 2000, 'Minimizing wind effects on active control systems for attenuating outdoor transformer noise', Noise Control Engineering Journal, vol. 48, no. 4, pp. 130-130.
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Apkarian, P & Hoang Duong Tuan 2000, 'Robust control via concave minimization local and global algorithms', IEEE Transactions on Automatic Control, vol. 45, no. 2, pp. 299-305.
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Apkarian, P & Tuan, HD 2000, 'Parameterized LMIs in Control Theory', SIAM Journal on Control and Optimization, vol. 38, no. 4, pp. 1241-1264.
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Aslund, M & Canning, J 2000, 'Annealing properties of gratings written into UV-presensitized hydrogen-outdiffused optical fiber', OPTICS LETTERS, vol. 25, no. 10, pp. 692-694.
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Ayre, PJ, Vidakovic, SS, Tansley, GD, Watterson, PA & Lovell, NH 2000, 'Sensorless Flow and Head Estimation in the VentrAssist Rotary Blood Pump', Artificial Organs, vol. 24, no. 8, pp. 585-588.
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Bagchi, D, Bagchi, M, Stohs, SJ, Das, DK, Ray, SD, Kuszynski, CA, Joshi, SS & Pruess, HG 2000, 'Free radicals and grape seed proanthocyanidin extract: importance in human health and disease prevention', Toxicology, vol. 148, no. 2-3, pp. 187-197.
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Bai, MR, Hsiao, I, Tsai, H & Lin, C 2000, 'Development of an on-line diagnosis system for rotor vibration via model-based intelligent inference', The Journal of the Acoustical Society of America, vol. 107, no. 1, pp. 315-323.
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Biacino, L, Gerla, G & Ying, MS 2000, 'Approximate reasoning based on similarity', MATHEMATICAL LOGIC QUARTERLY, vol. 46, no. 1, pp. 77-86.
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The connection between similarity logic and the theory of closure operators is examined. Indeed one proves that the consequence relation defined in [14] can be obtained by composing two closure operators and that the resulting operator is still a closure
Bishop, DW, Thomas, PS & Ray, AS 2000, 'Micro Raman characterization of nickel sulfide inclusions in toughened glass', MATERIALS RESEARCH BULLETIN, vol. 35, no. 7, pp. 1123-1128.
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Toughened glass panels used as glazing material in multistory buildings are subject to fracture when they contain nickel sulfide inclusions. The failure mechanism is generally attributed to the significant volume increase related to a polymorphic phase retransformation in nickel sulfide. This investigation exploits the ability of micro Raman spectroscopy to analyze minute inclusions. The technique is able to distinguish between different polymorphs and various stoichiometric forms of nickel sulfide and has the potential to satisfy the need for an in situ, nondestructive analytical technique for the characterization of nickel sulfide inclusions in glass.
Blazkiewicz, P, Xu, W, Wong, D, Canning, J, Asland, M & Town, G 2000, 'Carbon dioxide laser-assisted poling of silicate-based optical fibers', OPTICS LETTERS, vol. 25, no. 4, pp. 200-202.
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Blunden, BG & Indraratna, B 2000, 'Evaluation of surface and groundwater management strategies for drained sulfidic soil using numerical simulation models', Soil Research, vol. 38, no. 3, pp. 569-569.
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The effective management of acid sulfate soils is a major issue for many
coastal regions in Australia. Simulations were conducted to evaluate 4
different water management strategies that could be applied to agricultural
land on the south coast of New South Wales, Australia, to minimise acid
generation from acid sulfate soils. The water management strategies are
compared with the existing extensively drained situation which generates and
discharges large quantities of acidic pyrite oxidation products. The 4 water
management strategies include elevated drain water levels using a weir, 25 mm
irrigation on a 7- or 14-day cycle, and elevated drain water levels with
irrigation. All of these strategies were designed to minimise the generation
of acid by reducing the transport of oxygen to the sulfidic soil. Simulations
were conducted for weather and site conditions experienced during a 12-month
period starting in July 1997.
Model simulations showed that maintenance of elevated drain water levels using
a weir in the drain significantly reduced the amount of acid generated by
75% and 57%, at 10 and 90 m distance from the drain,
respectively, by comparison with the existing drained state. The addition of
25 mm irrigation on a 14-day cycle to the weir simulation reduced the
oxidation of pyrite by a further 1–2%. Application of irrigation
only on a 7-day cycle also reduced the acid generated by 89% and
94% at 10 and 90 m distance from the drain, respectively, by comparison
with the existing drained state. Irrigation on a 14-day cycle was not as
successful in reducing pyrite oxidation as either the 7-day irrigation or weir
strategies. Evaluation of the 4 water management options showed that
significant improvements can be made with respect to the amount of acid
generated by relatively simple and cost-effective land management practices.
Braunerhjelm, P, Carlsson, B, Cetindamar, D & Johansson, D 2000, 'The old and the new: the evolution of polymer and biomedical clusters in Ohio and Sweden', Journal of Evolutionary Economics, vol. 10, no. 5, pp. 471-488.
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Callipo, A, Cucchiara, R & Piccardi, M 2000, 'Computational models for image processing for shared-memory multiprocessors', Integrated Computer-Aided Engineering, vol. 7, no. 1, pp. 39-52.
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Different tasks in image processing exhibit different computational requirements that should be considered with respect to the architecture. This is particularly critical in parallel machines where many parallelization techniques, as data partitioning an
Canning, J 2000, 'Engineering large anisotropy in amorphous glass', OPTICS LETTERS, vol. 25, no. 4, pp. 233-235.
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Canning, J 2000, 'Grating confinement in a photonic crystal fibre', OPTICS COMMUNICATIONS, vol. 176, no. 1-3, pp. 121-124.
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Canning, J 2000, 'Photosensitisation and photostabilisation of laser-induced index changes in optical fibres', Optical Fiber Technology, vol. 6, pp. 275-289.
Canning, J 2000, 'Photosensitization and photostabilization of laser-induced index changes in optical fibers', OPTICAL FIBER TECHNOLOGY, vol. 6, no. 3, pp. 275-289.
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Canning, J & Aslund, M 2000, 'Birefringence compensation, improved fringe contrast and trimming in an integrated asymmetric Mach-Zehnder interferometer using mid-IR laser processing', OPTICAL MATERIALS, vol. 14, no. 2, pp. 175-183.
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Canning, J, Aslund, M & Hu, PF 2000, 'Ultraviolet-induced absorption losses in hydrogen-loaded optical fibers and in presensitized optical fibers', OPTICS LETTERS, vol. 25, no. 22, pp. 1621-1623.
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Canning, J, Aslund, M, Ankiewicz, A, Dainese, M, Fernando, H, Sahu, JK & Wosinski, L 2000, 'Birefringence control in plasma-enhanced chemical vapor deposition planar waveguides by ultraviolet irradiation', APPLIED OPTICS, vol. 39, no. 24, pp. 4296-4299.
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Canning, J, van Eijkelenborg, MA, Ryan, T, Kristensen, M & Lyytikainen, K 2000, 'Complex mode coupling within air-silica structured optical fibres and applications', OPTICS COMMUNICATIONS, vol. 185, no. 4-6, pp. 321-324.
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Castel, A, François, R & Arliguie, G 2000, 'Mechanical behaviour of corroded reinforced concrete beams—Part 1: Experimental study of corroded beams', Materials and Structures, vol. 33, no. 9, pp. 539-544.
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Castel, A, François, R & Arliguie, G 2000, 'Mechanical behaviour of corroded reinforced concrete beams—Part 2: Bond and notch effects', Materials and Structures, vol. 33, no. 9, pp. 545-551.
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Cooray, FR & Bird, TS 2000, 'Analysis of radiation from two separate circular cylindrical waveguides by the method of moments', Radio Science, vol. 35, no. 2, pp. 567-577.
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Cranton, WM, Mastio, EA, Thomas, CB, Tsakonas, C & Stevens, R 2000, 'Laser processing for enhanced performance thin film electroluminescent devices', Electronics Letters, vol. 36, no. 8, pp. 754-754.
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Cronin, SJ, Manoharan, V, Hedley, MJ & Loganathan, P 2000, 'Fluoride: A review of its fate, bioavailability, and risks of fluorosis in grazed-pasture systems in New Zealand', NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH, vol. 43, no. 3, pp. 295-321.
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Fluoride (F) is an essential element for animal growth, not readily taken up by plants from soils, yet cases of acute fluorosis in grazing animals caused by ingestion of phosphatic fertilisers, volcanic ash, and industrial wastes remind us of its potential hazard. Fluoride concentrations in topsoils slowly increase where annual inputs through atmospheric pollution and phosphatic fertilisers exceed losses. This paper reviews information on the fate of F in grazed pasture systems with the aim of assessing the potential toxicity of accumulating soil F. A preliminary F-cycling model for grazed pastures, based on the review of international literature and F concentrations in selected New Zealand pasture soils, indicated that grazing sheep and cattle obtain over 50% of their dietary F (and this may be >80% during winter) from soil ingestion. The model suggests that at the extremes of the ranges of the measured winter soil ingestion (143–300 g d-1 for sheep and 900–1600 g d-1 for cattle) and dietary F absorptivity (bioavailability) of soil F (20–38%), total topsoil F concentrations in the range of 372–1461 μg F g-1 could cause chronic fluorosis in sheep and 326–1085 μg F g-1in cattle. We recommend that research is undertaken to measure F accumulation rates and soil F dietary absorptivity for a range of intensively managed New Zealand pasture soils. © 2000 Taylor & Francis Group, LLC.
Dahlstrand, XSL & Cetindamar, D 2000, 'The dynamics of innovation financing in Sweden', Venture Capital, vol. 2, no. 3, pp. 203-221.
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A well functioning and dynamic system of innovation financing is
an important tool for the development of future growth sectors. This
analysis of the dynamics of innovation financing by using the case of
Sweden shows the importance of government and venture capital in financing
innovation. It highlights two further important features. First, the role
of acquisitions in innovation financing identifies 'competent acquirers'
as active actors in the financing system; this is in addition to the
public sector and the venture capital industry. Second, innovation
financing differs by firms' technology specialization and industrial
sectors. In particular, technology-based service firms have different
financing patterns to that of manufacturing firms. The paper concludes
with a discussion on the functions of three important actors in financing
systems, namely government, venture capital, and competent acquirers.
Dharmappa, HB, Corderoy, RM & Hagare, P 2000, 'Developing an interactive multimedia software package to enhance understanding of and learning outcomes in water treatment processes', Journal of Cleaner Production, vol. 8, no. 5, pp. 407-411.
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Teaching and learning environments which use multimedia based resources greatly improve the effectiveness and efficiency of learning by engaging students at a deeper level than may otherwise be possible. This is particularly so in situations where `real world' phenomena and processes are being taught. Using such a multimedia package in teaching pollution control processes is novel. This paper reports on the successful development of a multimedia package dealing with several pollution control processes and its evaluation. The pollution control processes illustrated in the multimedia software are physico-chemical processes which are widely used in both water and wastewater treatment. Teaching the design concepts for these processes in a conventional classroom setting is challenging because students have difficulty in visualizing the techniques and processes involved. This difficulty is compounded by the fact that many of the processes occur naturally over longer time periods and so cannot be easily be integrated into normal teaching environments. The software package incorporates several different media modes including text, drawings, photographs, animation, and simulation. The preliminary pilot evaluation of this package using third year engineering students indicated that it provided greater insight and understanding of the complex treatment processes being taught.
Faber, MH, Val, DV & Stewart, MG 2000, 'Proof load testing for bridge assessment and upgrading', Engineering Structures, vol. 22, no. 12, pp. 1677-1689.
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Bridge deterioration with time and ever increasing traffic loads raise concerns about reliability of aging bridges. One of the ways to check reliability of aging bridges is proof load testing. A successful proof load test demonstrates immediately that the resistance of a bridge is greater than the proof load. This reduces uncertainty in the bridge resistance and so increases the bridge reliability. The paper considers a reliability-based calibration of intensities of proof loads for aging bridges to verify either an existing or increased load rating taking into account possible bridge deterioration. Intensities of proof loads are calibrated based on a consistent target reliability index. The influence of test risk, dead to live load ratio, and uncertainties associated with dead and live loads and bridge resistance is considered. The results presented in the paper relate to short and medium span bridges. © 2000 Elsevier Science Ltd.
Gabrys, B & Bargiela, A 2000, 'General fuzzy min-max neural network for clustering and classification', IEEE Transactions on Neural Networks, vol. 11, no. 3, pp. 769-783.
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Gibson, T, Bogduk, N, Macpherson, J & McIntosh, A 2000, 'Crash Characteristics of Whiplash Associated Chronic Neck Pain', Journal of Musculoskeletal Pain, vol. 8, no. 1-2, pp. 87-95.
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Objective: To analyze the motor vehicle crash parameters associated with chronic neck pain outcomes associated with whiplash injury. Method: Police accident data were matched with a clinical database of 273 subjects with chronic neck pain as a result of a motor vehicle crash. These subjects had or were in the process of being objectively investigated for zygapophyseal [Z-joint] pain by means of controlled double-blind differential diagnostic anesthetic blocks. The combined database was analyzed to find the crash parameters. Results: For the 92 cases where the crash data was able to be matched with the clinical data, females [55%] had slightly higher representation than males [45%]; rear-end impacts were more common [40%] and few had injuries requiring hospitalization [6.5%]. Higher severity crashes appeared to be associated with these chronic neck pain sufferers than typically found for whiplash associated disorder. For this group of drivers and motorcycle riders, 68 [74%] were diagnosed to have objective Z-joint pain mostly at the C2/3 [34%] and C5/6 [32%] levels of the neck. More symptomatic joints were found on the right side [59%] than left side [43%]. Conclusion: In Australia, the characteristics of the motor vehicle crashes associated with subjects suffering chronic neck pain were investigated. In the 92 cases analyzed, 74% had objective evidence that the chronic neck pain was connected with the Z-joints and seemed to be associated with more severe rear-end rear impacts.
Gin-Der Wu & Chin-Teng Lin 2000, 'Word boundary detection with mel-scale frequency bank in noisy environment', IEEE Transactions on Speech and Audio Processing, vol. 8, no. 5, pp. 541-554.
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Gowripalan, N, Sirivivatnanon, V & Lim, CC 2000, 'Chloride diffusivity of concrete cracked in flexure', CEMENT AND CONCRETE RESEARCH, vol. 30, no. 5, pp. 725-730.
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Granet, C, Bird, TS & James, GL 2000, 'Compact multimode horn with low sidelobes for global Earth coverage', IEEE Transactions on Antennas and Propagation, vol. 48, no. 7, pp. 1125-1133.
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Guo, YJ, Vadgama, S & Tanaka, Y 2000, 'Advanced base station technologies for UTRAN', Electronics & Communication Engineering Journal, vol. 12, no. 3, pp. 123-132.
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To achieve high capacity and to support high-data-rate services in the terrestrial access network (UTRAN) of the third generation Universal Mobile Telecommunications System (UMTS), it is essential to employ some advanced transceiver techniques at the base stations. In this paper, three such techniques are presented: adaptive antennas, multistage parallel interference cancellers and a new hybrid scheme. The operation principles and some simulation results of the techniques are given and some challenging implementation issues are discussed.
Ha, QP & Trinh, H 2000, 'A variable structure-based controller with fuzzy tuning for load-frequency control', International Journal of Power and Energy Systems, vol. 20, no. 3, pp. 146-154.
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This paper presents a variable structure-based approach to the load frequency control problem in electric power generation systems. This approach combines the salient features of both variable structure and fuzzy systems to achieve high-performance and robustness. Fuzzy tuning is proposed for this purpose to continuously adjust the controller parameters according to the area control error. Simulation results indicate that the control scheme is able to substantially enhance control performance in single-area and multi-area interconnected systems with non-reheat or reheat turbines. Furthermore, it is shown that the responses of the system employing the proposed controllers are quite insensitive to parameter changes and speed governor deadband, with or without generation rate constraints. The control strategy requires low computational cost and is amenable for practical implementation.
Ha, QP, Nguyen, QH, Rye, DC & Durrant-Whyte, HF 2000, 'Impedance control of a hydraulically actuated robotic excavator', AUTOMATION IN CONSTRUCTION, vol. 9, no. 5-6, pp. 421-435.
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In robotic excavation hybrid position/force control has been proposed for bucket digging trajectory following. In hybrid position/force control, the control mode is required to switch between position- and force-control depending on whether the bucket is in free space or in contact with the soil during the process. Alternatively, impedance control can be applied such that one control mode is employed in both free and constrained motion. This paper presents a robust sliding controller that implements impedance control for a backhoe excavator. The control law consists of three components: an equivalent control, a switching control and a tuning control. Given an excavation task in world space, inverse kinematic and dynamic models are used to convert the task into a desired digging trajectory in joint space. The proposed controller is applied to provide good tracking performance with attenuated vibration at bucket-soil contact points. From the control signals and the joint angles of the excavator, the piston position and ram force of each hydraulic cylinder for the axis control of the boom, arm, and bucket can be determined. The problem is then how to find the control voltage applied to each servovalve to achieve force and position tracking of each electrohydraulic system for the axis motion of the boom, arm, and bucket. With an observer-based compensation for disturbance force including hydraulic friction, tracking of the piston ram force and position is guaranteed using robust sliding control. High performance and strong robustness can be obtained as demonstrated by simulation and experiments performed on a hydraulically actuated robotic excavator. The results obtained suggest that the proposed control technique can provide robust performance when employed in autonomous excavation with soil contact considerations. (C) 2000 Elsevier Science B.V. All rights reserved.
Harmer, AR, McKenna, MJ, Sutton, JR, Snow, RJ, Ruell, PA, Booth, J, Thompson, MW, Mackay, NA, Stathis, CG, Crameri, RM, Carey, MF & Eager, DM 2000, 'Skeletal muscle metabolic and ionic adaptations during intense exercise following sprint training in humans', JOURNAL OF APPLIED PHYSIOLOGY, vol. 89, no. 5, pp. 1793-1803.
Hoang, DB & Wang, Z 2000, 'Performance of TCP applications over ATM networks with ABR and UBR services - a simulation analysis', COMPUTER COMMUNICATIONS, vol. 23, no. 9, pp. 802-815.
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This paper aims to present a comparative simulation study of the performance of TCP traffic over ATM networks with UBR and ABR services, to identify weaknesses of currently most promising ATM congestion control schemes; and to indicate the requirements f
Hoang, DB, Yu, X & Feng, D 2000, 'Fair intelligent bandwidth allocation for rate-adaptive video traffic', COMPUTER COMMUNICATIONS, vol. 23, no. 14-15, pp. 1425-1436.
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This paper presents an algorithm for network bandwidth sharing using explicit rate feedback, the Fair Intelligent Bandwidth Allocation (FIBA) for transporting rate-adaptive video traffic. We show that the FIBA algorithm is capable of allocating bandwidth
HUTVÁGNER, G, MLYNÁROVÁ, L & NAP, J-P 2000, 'Detailed characterization of the posttranscriptional gene-silencing-related small RNA in a GUS gene-silenced tobacco', RNA, vol. 6, no. 10, pp. 1445-1454.
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Posttranscriptional gene-silencing phenomena such as cosuppression and RNA interference are associated with the occurrence of small, about 21-23 nt short RNA species homologous to the silenced gene. We here show that the small RNA present in silenced tra
Indraratna, B & Redana, IW 2000, 'Numerical modeling of vertical drains with smear and well resistance installed in soft clay', CANADIAN GEOTECHNICAL JOURNAL, vol. 37, no. 1, pp. 132-145.
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Indraratna, B & Redana, IW 2000, 'Numerical modeling of vertical drains with smear and well resistance installed in soft clay', Canadian Geotechnical Journal, vol. 37, no. 1, pp. 132-145.
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This study describes the behavior of embankments stabilized with prefabricated vertical drains installed in soft clay foundations, based on several fully instrumented case histories selected from Thailand and Malaysia. A multidrain analysis is conducted based on an equivalent, plane strain model developed by the authors. The deformation of soft clay beneath an embankment (i.e., along and away from the centerline) is predicted and compared with the available field measurements. The effects of both smear and well resistance are incorporated in the analytical formulation, which is used in conjunction with the modified Cam-clay theory. It is demonstrated that the installation of vertical drains significantly increases the rate of settlement, improves the dissipation of pore-water pressure, and decreases the lateral deformation of the soft clay foundation. To obtain better predictions, especially of pore pressures and lateral displacements, the equivalent discharge capacity of the drains needs to be modeled appropriately. The inclusion of the effects of smear and well resistance in the analysis of vertical drains improves the accuracy of predictions significantly, in comparison with the field measurements.Key words: clay, consolidation, embankment, finite element method, settlement, smear zone, vertical drain.
Indraratna, B, Nemcik, JA & Gale, WJ 2000, 'Review and interpretation of primary floor failure mechanism at a longwall coal mining face based on numerical analysis', Géotechnique, vol. 50, no. 5, pp. 547-557.
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This paper describes the conceptual model of primary rock failure mechanisms in the floor ahead of the longwall coal mining face based on underground observations and numerical modelling. During longwall mining, the stress fields and displacements of strata are constantly changing. High stress concentrations ahead of the longwall face can initiate fractures in the rock floor that can, under unfavourable stress conditions, develop into secondary floor failure, where large displacements of strata can occur. Severely broken floor strata or floor heave can seriously interfere with mining operations. Underground observations indicate that the sub-vertical shear fractures and the shear failure along the bedding planes in stratified rock are the most common fracture types observed in the rock floor below the longwall face. To explain how these fractures occur, basic principles of rock failure mechanism are applied to an overstressed rock subject to stress concentrations typically found at the longwall face. The computational simulation of the progressive longwall mining operations was undertaken in stratified rock to model complex stress distributions ahead of the longwall face and to simulate the rock failure in the mining floor. The model indicates that the shear fractures and the bedding plane failure dominate the floor failure ahead of the moving longwall face, as was observed underground.
Jegatheesan, V 2000, 'Transient stage deposition of submicron particles in deep bed filtration under unfavorable conditions', Water Research, vol. 34, no. 7, pp. 2119-2131.
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JEGATHEESAN, V & VIGNESWARAN, S 2000, 'Surface Coverage of Filter Medium in Deep Bed Filtration: Mathematical Modeling and Experiments', Separation Science and Technology, vol. 35, no. 7, pp. 967-987.
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Jeong Geun Kim & Krunz, MM 2000, 'Bandwidth allocation in wireless networks with guaranteed packet-loss performance', IEEE/ACM Transactions on Networking, vol. 8, no. 3, pp. 337-349.
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Jeong Geun Kim & Krunz, MM 2000, 'Delay analysis of selective repeat ARQ for a Markovian source over a wireless channel', IEEE Transactions on Vehicular Technology, vol. 49, no. 5, pp. 1968-1981.
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Ji, JC & Hansen, CH 2000, 'Non-linear response of a post-buckled beam subjected to a harmonic axial excitation', JOURNAL OF SOUND AND VIBRATION, vol. 237, no. 2, pp. 303-318.
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An experimental investigation of the non-linear response of a clamped-sliding postbuckled beam subjected to a harmonic axial load is presented. Two types of resonances are considered: fundamental and subharmonic. The data demonstrate several non-linear phenomena including period-doubling sequence bifurcation, period-three, and chaotic motion. In addition, the effect of damping on the dynamic instability of the post-buckled beam is investigated. The regions of instability and chaotic response are shown for different damping levels. The resulting locus of instability of the periodic solutions in the amplitude-frequency parameter space provides valuable information on the overall dynamic behavior of the system. The qualitative changes can be observed when either the frequency or the amplitude of excitation is varied across a bifurcation curve. The measured data are illustrated through time histories, phase plots, Fourier spectra, and Poincare sections.
Ji, JC, Yu, L & Leung, AYT 2000, 'Bifurcation behavior of a rotor supported by active magnetic bearings', JOURNAL OF SOUND AND VIBRATION, vol. 235, no. 1, pp. 133-151.
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The non-linear dynamics of a rigid rotor levitated by active magnetic bearings is investigated. The vibrations in the horizontal and vertical directions are analyzed on the center manifold near the double-zero degenerate point by using normal-form method. The resulting normal forms in the horizontal and vertical directions are different due to the effect of rotor weight. It is shown that the vibratory behavior in the vertical direction can be reduced on the center manifold to the Bogdanov-Takens form. For the autonomous case, there exist saddle-node bifurcation and Hopf bifurcation for local analysis, and a saddle-connection bifurcation for global analysis. For non-autonomous case, the Melnikov technique is used to determine the critical parameter at which the homoclinic orbits intersect transversally. For the vibrations in the horizontal direction, the essential non-linear terms of the truncated normal form are third order. The behaviors of zero solutions are given. Finally, numerical simulations are performed to verify the analytical predictions.
Joshi, SK, Su, X, Porreca, F & Gebhart, GF 2000, 'κ-Opioid Receptor Agonists Modulate Visceral Nociception at a Novel, Peripheral Site of Action', The Journal of Neuroscience, vol. 20, no. 15, pp. 5874-5879.
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Karaomerlioglu, DC & Jacobsson, S 2000, 'The Swedish venture capital industry: An infant, adolescent or grown-up?', Venture Capital, vol. 2, no. 1, pp. 61-88.
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This paper analyses the evolution of the Swedish venture capital (VC) industry. The institutional infrastructure in the form of legal access to available savings, the incentive structure and the exit possibilities for the VC firm initially blocked the evolution of the VC industry but institutional changes initiated a catch-up process in Sweden in the 1990s. The size of the Swedish VC industry is now substantial, among the four largest in the OECDset in relation to population. A distinct structural change in the Swedish VC industry in favour of diversity is also taking place but the industry is not yet mature with respect to its competence. The key policy issues are related not only to expanding the size of the industry, but also to increasing its competence. Further institutional change is, therefore, warranted, not only in terms of tax reforms and improving the access to pension funds and other savings, but also in terms of distinct policies aiming at increasing the flow of competence to the VC industry. © 2000 Taylor & Francis Ltd.
Khalili, N, Khabbaz, MH & Valliappan, S 2000, 'An effective stress based numerical model for hydro-mechanical analysis in unsaturated porous media', Computational Mechanics, vol. 26, no. 2, pp. 174-184.
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Kim, SK, Atanassov, KT & Shannon, AG 2000, 'Generalized nets in neurology: an example of mathematical modelling', International Journal of Mathematical Education in Science and Technology, vol. 31, no. 2, pp. 173-179.
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Kirkpatrick, D & McLaughlan, R 2000, 'Flexible lifelong learning in professional education', Educational Technology and Society, vol. 3, no. 1, pp. 24-31.
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Universities are continually seeking effective responses to the challenges created by the increased demand for continuing professional education from a diverse client group responding to the pressures for lifelong learning. The growth in information and communications technologies has created new environments in which learning can occur. New technologies open up possibilities for bringing together distributed learners and the opportunity to support interaction between learners from diverse geographical and life contexts. The challenge for educators is to develop teaching-learning approaches that support learners and develop the skills and knowledge necessary to perform more effectively in the workplace and to continue to learn. The professionally oriented subject Contaminated Sites Management was re-developed to incorporate electronically supported problem-oriented learning. The new subject integrated professional understanding and practice with existing subject content and incorporated flexibility into a subject that had traditionally been taught face-to-face. Subject design was based on principles of problem-oriented and experiential learning and included individual and team-work and a polluted sites simulation conducted within a webbased learning environment. The incorporation of computer mediated communications technologies provided flexible and responsive support for student interaction and communication. Students responded positively to these flexible teaching and learning approaches and the subject developed students' professional skills and knowledge successfully.
Korkmaz, T & Krunz, M 2000, 'Source-oriented topology aggregation with multiple QoS parameters in hierarchical networks', ACM Transactions on Modeling and Computer Simulation, vol. 10, no. 4, pp. 295-325.
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In this paper, we investigate the problem of topology aggregation (TA) for scalable, QoS-based routing in hierarchical networks. TA is the process of summarizing the topological information of a subset of network elements. This summary is flooded throughout the network and used by various nodes to determine appropriate routes for connection requests. A key issue in the design of a TA scheme is the appropriate balance between compaction and the corresponding routing performance. The contributions of this paper are twofold. First, we introduce a source-oriented approach to TA, hich provides better performance than existing approaches. The intuition behind this approach is that the advertised topology-state information is used by
source
nodes to determine tentative routes for connection requests. Accordingly, only information relevant to source nodes needs to be advertised. We integrate the source-oriented approach into three new TA schemes that provide different trade-offs between compaction and accuracy. Second, we extend our source-oriented approach to multi-QoS-based TA. A key issue here is the determination of appropriate values for the multiple QoS parameters associated with a logical link. Two new approaches to computing these values are introduced. Extensive simulations are used to evaluate the performance of out proposed schemes.
Krunz, M & Apostolopoulos, G 2000, 'Efficient support for interactive scanning operations in MPEG-based video-on-demand systems', Multimedia Systems, vol. 8, no. 1, pp. 20-36.
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Krunz, MM & Ramasamy, AM 2000, 'The correlation structure for a class of scene-based video models and its impact on the dimensioning of video buffers', IEEE Transactions on Multimedia, vol. 2, no. 1, pp. 27-36.
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Kwon, DY, Vigneswaran, S, Fane, AG & Ben Aim, R 2000, 'Experimental determination of critical flux in cross-flow microfiltration', SEPARATION AND PURIFICATION TECHNOLOGY, vol. 19, no. 3, pp. 169-181.
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Lal, SKL & Craig, A 2000, 'Psychophysiological effects associated with drowsiness: Driver fatigue and electroencephalography', INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY, vol. 35, no. 1, pp. 39-39.
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Lam, YC, Joshi, SC & Liu, XL 2000, 'Numerical simulation of the mould-filling process in resin-transfer moulding', Composites Science and Technology, vol. 60, no. 6, pp. 845-855.
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LAW, SS & ZHU, XQ 2000, 'STUDY ON DIFFERENT BEAM MODELS IN MOVING FORCE IDENTIFICATION', Journal of Sound and Vibration, vol. 234, no. 4, pp. 661-679.
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Lei, QP, Shannon, AG, Heller, RK & Lamb, DH 2000, 'Quantification of free polysaccharide in meningococcal polysaccharide-diphtheria toxoid conjugate vaccines.', Dev Biol (Basel), vol. 103, pp. 259-264.
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A precipitation method using deoxycholate/HCI has been applied successfully to separate unconjugated free polysaccharide from carrier protein-bound material in meningococcal polysaccharide-diphtheria toxoid conjugate vaccines. The method effectively separated free and bound polysaccharide in conjugate vaccines prepared from Neisseria meningitidis serotypes A, C, W135 and Y. Free polysaccharide remained in the supernatant after deoxycholate treatment while protein-bound polysaccharide was fully precipitated. Testing by both colorimetric assay and high performance anion exchange chromatography with pulsed amperometric detection (HPAEC-PAD) has confirmed the selective loss of protein-bound polysaccharide in samples of conjugate vaccine or conjugate vaccine mixed with known amounts of free polysaccharide. This rapid separation method requires minimum sample handling and is specific, reproducible, and allows assessment of free polysaccharide levels in vaccines at final container concentration.
Li, H 2000, 'An assessment of depolarisation models of crossflow microfiltration by direct observation through the membrane', Journal of Membrane Science, vol. 172, no. 1-2, pp. 135-147.
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Li, J, Dong, G & Ramamohanarao, K 2000, 'Making Use of the Most Expressive Jumping Emerging Patterns for Classification', Knowledge Discovery And Data Mining, Proceedings: Current Issues And New Applications, vol. 1805, no. NA, pp. 220-232.
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Classification aims to discover a model from training data that can be used to predict the class of test instances. In this paper, we propose the use of jumping emerging patterns (JEPs) as the basis for a new classifier called them JEP-Classifier. Each J
Li, QS, Liu, DK, Leung, AYT, Zhang, N, Tam, CM & Yang, LF 2000, 'Modelling of structural response and optimization of structural control system using neural network and genetic algorithm', Structural Design of Tall Buildings, vol. 9, no. 4, pp. 279-293.
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This paper proposes an integrated approach to the modelling and optimization of structural control systems in tall buildings. In this approach, an artificial neural network is applied to model the structural dynamic responses of tall buildings subjected to strong earthquakes, and a genetic algorithm is used to optimize the design problem of structural control systems, which constitutes a mixed-discrete, nonlinear and multi-modal optimization problem. The neural network model of the structural dynamic response analysis is included in the genetic algorithm and is used as a module of the structural analysis to estimate the dynamic responses of tall buildings. A numerical example is presented in which the general regression neural network is used to model the structural response analysis. The modelling method, procedure and the numerical results are discussed. Two Los Angeles earthquake records are adopted as earthquake excitations.
Lim, CC, Gowripalan, N & Sirivivatnanon, V 2000, 'Microcracking and chloride permeability of concrete under uniaxial compression', CEMENT & CONCRETE COMPOSITES, vol. 22, no. 5, pp. 353-360.
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Lowe, DB, Scott, CA & Bagia, R 2000, 'A skills development framework for learning computing tools in the context of engineering practice', European Journal of Engineering Education, vol. Volume 1, no. 0, pp. 45-56.
Lowe, DB, Scott, CA & Bagia, R 2000, 'A skills development framework for learning computing tools in the context of engineering practice', European Journal of Engineering Education, vol. 25, no. 1, pp. 45-56.
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Informatics is a first-year subject in the new Bachelor of Engineering/Graduate Diploma in Engineering Practice degree at the University of Technology, Sydney. All undergraduate engineering students must do this subject irrespective of their intended engineering discipline (civil, mechanical, environmental systems, electrical, telecommunications, computer systems). The focus of this subject is to introduce students to computational tools (such as spreadsheets and programming languages) and information retrieval tools (such as the World Wide Web), which support engineering, as well as looking at the effective and professional use of these tools. Informatics has three core elements: the development of specific skills which will assist students in both their studies and their professional practice; the development of an ability to continue to develop further skills independently; and consideration of a wide variety of issues related to the computational tools that the students are using. Examples of the issues covered include: privacy; accuracy of content; fraud; security; the professional and ethical responsibility of engineers for the results of their calculations; selecting the best tool for the job; and limitations of computational tools. This paper will review the activities and challenges the students faced, describe the approaches that we adopted and the various issues we raised, the expected and actual outcomes arising from the activities, and our plans for the future of the subject. © 2000 Taylor & Francis Ltd.
Luk, KC, Ball, JE & Sharma, A 2000, 'A study of optimal model lag and spatial inputs to artificial neural network for rainfall forecasting', JOURNAL OF HYDROLOGY, vol. 227, no. 1-4, pp. 56-65.
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Marengo, EA & Ziolkowski, RW 2000, 'Description of random radiating and nonradiating sources', Physical Review E, vol. 62, no. 3, pp. 4465-4468.
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Marjanovic, O 2000, 'Supporting the 'soft' side of business process reengineering.', Bus. Process. Manag. J., vol. 6, no. 1, pp. 43-55.
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The contemporary business environment in which an organisation exists is becoming increasingly dynamic. The pressing need to improve the existing business processes in an organisation, results in the appearance of a new field called Business Process Reengineering (BPR). However, despite more and more innovative technological solutions for business processes, resistance to change continues to be the biggest BPR obstacle. According to many experts, this is the main reason why reengineering projects in many organisations fail. This paper investigates the “soft” side of BPR (i.e. its human aspects). More precisely, it focuses on ways information technology (IT), in particular group support systems (GSS), can support the soft side of BPR and reduce resistance to change. In this way, the paper introduces the third level of integration of IT and BPR, in addition to the two levels already described in the literature. The approach is illustrated by an example of a company that used GSS during its reengineering efforts. © 2000, MCB UP Limited
Mastio, EA, Cranton, WM & Thomas, CB 2000, 'Pulsed laser annealing for high-efficiency thin film electroluminescent devices', Journal of Applied Physics, vol. 88, no. 3, pp. 1606-1611.
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Mastio, EA, Fogarassy, E, Cranton, WM & Thomas, CB 2000, 'Ablation study on pulsed KrF laser annealed electroluminescent ZnS:Mn/Y2O3 multilayers deposited on Si', Applied Surface Science, vol. 154-155, pp. 35-39.
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Mastio, EA, Thomas, CB, Cranton, WM & Fogarassy, E 2000, 'The effects of multiple KrF laser irradiations on the electroluminescence and photoluminescence of rf-sputtered ZnS:Mn-based electroluminescent thin film devices', Applied Surface Science, vol. 157, no. 1-2, pp. 74-80.
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Mata, JE, Jackson, JD, Joshi, SS, Tracewell, WG, Pirruccello, SJ, Murphy, BJ, Bishop, MR & Iversen, PL 2000, 'Pharmacokinetics and In Vivo Effects of a Six-Base Phosphorothioate Oligodeoxynucleotide with Anticancer and Hematopoietic Activities in Swine', Journal of Hematotherapy & Stem Cell Research, vol. 9, no. 2, pp. 205-214.
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McGloin, D & Dunn, MH 2000, 'Simple theory of microwave induced transparency in atomic and molecular systems', Journal of Modern Optics, vol. 47, no. 11, pp. 1887-1897.
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In recent years the idea of electromagnetically induced transparency in atomic systems using a microwave coupling field has been discussed. We present theoretical work on how this may be achieved in both Doppler systems, and by extension in non-Doppler broadened systems. By considering the specific example of atomic rubidium we demonstrate the feasibility and practical difficulties of such an experiment. By considering systems with appropriate rotational-vibration structure we conclude that microwave induced transparency in gas vapours is more readily achievable in molecular systems. © 2000 Taylor & Francis Group, LLC.
McGloin, D, Dunn, MH & Fulton, DJ 2000, 'Polarization effects in electromagnetically induced transparency', Physical Review A, vol. 62, no. 5.
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McGloin, D, Turnbull, GA & Dunn, MH 2000, 'Electromagnetically induced focussing effects in four level media', Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series, pp. 64-65.
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An attempt was made to model the refraction due to two different Rabi frequencies, a lower value of 120 MHz corresponding to the outer edge of the coupling field and a higher one of 300 MHz corresponding to the center of the coupling field. The difference in the refraction produced by these two Rabi frequencies gave a measure of the lensing action on the probe. Positive values of this difference imply a converging lens, while negative values imply a diverging lens.
Mengkang Peng, Sasabo, MF, Hingjie Jay Guo, Downing, OJ & Barton, SK 2000, 'Frame-extended linear decorrelating detector for asynchronous CDMA', IEEE Transactions on Vehicular Technology, vol. 49, no. 5, pp. 1918-1927.
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Missiroli, M, Yingjie Jay Guo & Barton, SK 2000, 'Near-far resistant channel estimation for CDMA systems using the linear decorrelating detector', IEEE Transactions on Communications, vol. 48, no. 3, pp. 514-524.
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The well-known linear decorrelating detector (LDD) for direct-sequence code-division multiple-access (CDMA) systems provides near-far resistant performance when the timing of each user is accurately known. Traditional CDMA acquisition techniques suffer from high differences in power levels. The estimation accuracy for a user overwhelmed by stronger ones is likely to be unsatisfactory; at the same time, the interference from a user undergoing acquisition or tracking is not removed by the standard LDD. In this paper, a fully near-far resistant technique for acquisition and tracking for asynchronous CDMA systems applying the LDD is proposed, considering realistic band-limited signals. This technique is based on the adoption of a pair of special sequences equivalent to a dedicated access channel and is shown to provide a relatively fast and robust means to perform channel estimation both in case of single- and multipath channels.
Mitchell, AD, Loganathan, P, Payn, TW & Tillman, RW 2000, 'Magnesium fertiliser dissolution rates in pumice soils under Pinus radiata', AUSTRALIAN JOURNAL OF SOIL RESEARCH, vol. 38, no. 3, pp. 753-767.
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Application of Mg fertilisers has been suggested as a means of reducing the incidence of Mg deficiency of forest trees in New Zealand and Europe. The objective of this study was to determine the rates of dissolution of a range of Mg fertilisers applied to a pumice soil (Typic Udivitrand). The rate of fertiliser dissolution was little influenced by whether the fertiliser was applied directly on to the soil surface (litter removed) or on to the litter layer in a Pinus radiata plantation. Twenty-seven months since fertiliser application the mean (with and without litter) percentage of Mg dissolved was in the sequence: Epsom salts > calcined magnesite 1-2 mm > granmag (a partially acidulated and granulated calmag product) > calcined magnesite 2-4 mm > forestry grade dolomite. The specific dissolution rate constants (μg/cm2.day of fertiliser) for the slowly soluble Mg fertilisers calculated using an elemental sulfur oxidation cubic model were 587 for calcined magnesite 1-2 mm, 426 for calcined magnesite 2-4 mm, 385 for granmag, and 18 for forestry grade dolomite. In a laboratory incubation study the elemental sulfur oxidation cubic model described the rate of dissolution of Mg fertilisers within narrow fertiliser particle size ranges. The specific fertiliser dissolution rate constants, however, increased with decreases in particle size, suggesting that the rate of dissolution depends on factors other than surface area when particle sizes varied widely. Slowly soluble, alkaline Mg fertilisers had a significant liming effect on the soil. They were more effective in increasing soil exchangeable Mg than soluble Mg salts over a long-period and therefore, they are better fertilisers for P. radiata.
Nemcik, JA 2000, 'Floor failure analysis at a longwall mining face based on the multiple sliding block model', Geotechnical and Geological Engineering, vol. 18, no. 3, pp. 175-192.
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This paper presents an analytical model of a floor failure at a longwall coal mining face based on the multiple sliding block model. During longwall mining, stresses and displacements of strata are constantly changing. High stress concentrations at the coal face can exceed the rock strength and initiate fractures in the strata that can, under unfavourable conditions, lead to large floor displacements and disruption of mining operations. Underground observations of the rock floor and the computational modelling of the longwall face indicate that two types of fracture dominate floor failure. Extensive lateral fracturing often develops along the numerous weak bedding planes that are typically present in the sedimentary strata while sub-vertical fractures form in response to changing stress abutments ahead of the longwall coal face. The fractures that initially develop ahead of the longwall face are subject to a "secondary" movement when exposed ahead of the longwall supports. In response to the stress relief as the coal is mined from above. Strata move towards the opening and bending of the floor occurs. If fractures in the floor exist, the floor blocks will displace in response to the floor movement and interact at the fractured surfaces. This analysis attempts to explain how the stress distribution develops within the broken floor during an active movement of floor strata leading to high stress concentrations at the floor level. The analytical formulation in this paper is supplemented by numerical modelling, and results are presented to verify that the analytical solutions are in accordance with the numerical predictions.
Ngamaramvaranggul, V & Webster, MF 2000, 'Computation of free surface flows with a Taylor-Galerkin/pressure-correction algorithm', International Journal for Numerical Methods in Fluids, vol. 33, no. 7, pp. 993-1026.
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A semi-implicit Taylor-Galerkin/pressure-correction finite element scheme (STGFEM) is developed for problems that manifest free surfaces associated with the incompressible creeping flow of Newtonian fluids. Such problems include stick-slip and die-swell flows, both with and without a superimposed drag flow, and for plane, axisymmetric and annular systems. The numerical solutions are compared with available analytical and numerical solutions, both in the neighbourhood of singularities and elsewhere. Close correspondence in accuracy is extracted from the literature for both stick-slip and die-swell flows. Stick-slip flow is used as a precursor study to the more complex free surface calculations involved for die-swell in extrudate flow. Two different free surface techniques are reported and results are analysed with mesh refinement and varying structure. Copyright (C) 2000 John Wiley and Sons, Ltd.
Ngo, HH, Vigneswaran, S, Kim, SH, Bidkar, A & Moon, H 2000, 'Microfiltration-adsorption hybrid system in organics removal from water', Water Science and Technology, vol. 41, no. 10-11, pp. 51-57.
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A series of experiments was conducted with a Millipore flat plate microfiltration module modified to incorporate in-line powdered activated carbon (PAC) addition. In-line PAC was mixed continuously through a spiral mixing device for a predetermined time prior entering a membrane unit. The results showed that this system is excellent in removing fulvic acid (FA). This system provides to sufficient contact time for PAC to adsorb organics compared to the system with in-line adsorbent addition. More than 85% of FA was removed from water containing 8 mg/l of FA. To achieve this following conditions were used:.(i) a velocity gradient G (mixing intensity) of 160.4 s–1; (ii) a hydraulic residence time (mixing time) of 4 minutes; (iii) a PAC dose of 260 mg/l; and (iv) membrane pore size of 0.22 μm. In case of low FA concentration (e.g. 1.2 mg/l) in water, the removal efficiency was almost 100%. The removal efficiency also increased with the increase of mixing intensity and mixing time. The permeate flux slightly improved when a membrane of pore size 0.22 μm was used with shorter hydraulic residence time and lower PAC concentration. This paper presents a mathematical model developed based on surface diffusion. The model successfully predicted the performance of this hybrid system.
Parfitt, AJ & Bird, TS 2000, 'Phased array antenna analysis using time delay beam steering and hybrid FDTD method', Electronics Letters, vol. 36, no. 2, pp. 108-108.
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Partlett, MJ & Thomas, PS 2000, 'Characterization of surface-modified poly(ethylene terephthalate) fibres by inverse gas chromatography', Polymer International, vol. 49, no. 6, pp. 495-500.
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Perry, SW & Guan, L 2000, 'Weight assignment for adaptive image restoration by neural networks', IEEE Transactions on Neural Networks, vol. 11, no. 1, pp. 156-170.
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Perry, SW & Wyber, RJ 2000, 'A Hopfield neural network approach for the reconstruction of wide-bandwidth sonar data', Neural Networks for Signal Processing X. Proceedings of the 2000 IEEE Signal Processing Society Workshop (Cat. No.00TH8501), pp. 876-885.
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Petersen, DR, Link, RE, Wu, C, Hao, H & Zhou, Y 2000, 'Statistical Properties of the Bukit Timah Granite in Singapore', Journal of Testing and Evaluation, vol. 28, no. 1, pp. 36-36.
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Qiu, X & Hansen, CH 2000, 'A Modified Filtered-X LMS Algorithm for Active Control of Periodic Noise with On-Line Cancellation Path Modelling', Journal of Low Frequency Noise, Vibration and Active Control, vol. 19, no. 1, pp. 35-46.
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The filtered-x LMS algorithm (FXLMS) has been successfully applied to the active control of periodic and random noise and vibration. This paper presents a modified algorithm for active control of periodic noise based on the FXLMS algorithm which uses random noise for on-line cancellation path transfer function (CPTF) estimation. In the proposed algorithm, another two short adaptive filters are introduced. One is an adaptive noise cancellation filter, which is used to improve the convergence speed of the CPTF modelling filter in the presence of very large amplitude primary noise by cancelling the component of the error signal that is correlated with the primary noise. The other is an adaptive estimator, which is used to re-estimate the obtained CPTF (long FIR filter estimated by random noise) with a short FIR filter by using the periodic reference signal as the input. The traditional FXLMS algorithm is then used with the shortened FIR filter to filter the reference signal, thus providing significant processing flexibility in practical situations where the primary path transfer function changes much faster than the CPTF. Simulation results demonstrate the effectiveness of the proposed algorithm.
Qiu, X & Hansen, CH 2000, 'Secondary acoustic source types for active noise control in free field: manopoles or multipoles', JOURNAL OF SOUND AND VIBRATION, vol. 232, no. 5, pp. 1005-1009.
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Ramsden, VS, Watterson, PA, Holliday, WM, Tansley, GD, Reizes, JA & Woodard, JC 2000, 'A rotary blood pump', Journal of Electrical and Electronics Engineering, Australia, vol. 20, no. 1, pp. 17-22.
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This paper describes aspects of a new rotary blood pump for long term implantation as a left ventricular assist device. The combination of centrifugal pump, hydrodynamic blood-lubricated bearings, integrated impeller/rare earth magnet rotor, and double-sided axial-flux brushless-DC motor is unique. These special features enable high reliability and relatively high motor efficiency with low blood damage (hemolysis), and tow blood coagulation (thrombus).
Rosowsky, DV, Stewart, MG & Khor, EH 2000, 'Early-age loading and long-term deflections of reinforced concrete beams', ACI Structural Journal, vol. 97, no. 3, pp. 517-524.
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This paper examines the effects of early-age (construction) loads on the long-term deflections of reinforced concrete (RC) flexural members. Particular consideration is given to simply supported, singly reinforced rectangular beams. The probabilistic analysis of time-dependent deflections takes into account concrete maturation, nonlinear creep and shrinkage behavior, and load process models for both service and construction. While this paper summarizes the time-dependent analysis technique (reported in detail elsewhere), the focus of this paper is on evaluating the effects of early-age loading on the long-term deflection and on practical implications for deflection serviceability design of RC members.
Roughan, R, Veitch, D & Abry, P 2000, 'Real-time estimation of the parameters of long-range dependence', IEEE/ACM Transactions on Networking, vol. 8, no. 4, pp. 467-478.
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Sadiq, W, Marjanovic, O & Orlowska, ME 2000, 'Managing Change and Time in Dynamic Workflow Processes.', Int. J. Cooperative Inf. Syst., vol. 9, no. 1-2, pp. 93-116.
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Sheng, D & Smith, DW 2000, 'Numerical modelling of competitive components transport with non-linear adsorption', International Journal for Numerical and Analytical Methods in Geomechanics, vol. 24, no. 1, pp. 47-71.
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Sheng, D, Sloan, SW & Yu, HS 2000, 'Aspects of finite element implementation of critical state models', Computational Mechanics, vol. 26, no. 2, pp. 185-196.
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Sloan, SW, Sheng, D & Abbo, AJ 2000, 'Accelerated initial stiffness schemes for elastoplasticity', International Journal for Numerical and Analytical Methods in Geomechanics, vol. 24, no. 6, pp. 579-599.
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Stuart, BH & Thomas, PS 2000, 'The characterisation of plastic used in a Gabo sculpture', POLYMER TESTING, vol. 19, no. 8, pp. 953-957.
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Thomas, P & Ray, AS 2000, 'Processing initiated failure of toughened glass panels', Chemistry in Australia, vol. 67, no. 6, pp. 12-14.
Trinh, H & Ha, Q 2000, 'Design of linear functional observers for linear systems with unknown inputs', International Journal of Systems Science, vol. 31, no. 6, pp. 741-749.
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This paper presents a reduced-order linear functional state observer for linear systems with unknown inputs. A simple observer construction procedure is provided. A numerical example is given to illustrate the properties of the observer. The example deals with a linear system comprising of 20 states, 2 inputs, 10 outputs and 5 unknown inputs for which a fourth-order observer is designed to estimate two linear functions of the states.
Tuan, HD, Apkarian, P & Nakashima, Y 2000, 'New Lagrangian dual global optimization algorithm for solving bilinear matrix inequalities', International Journal of Robust and Nonlinear Control, vol. 10, no. 7, pp. 571-578.
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A new global optimization algorithm for solving bilinear matrix inequalities (BMI) problems is developed. It is based on a dual Lagrange formulation for computing lower bounds that are used in a branching procedure to eliminate partition sets in the space of complicating variables. The advantage of the proposed method is twofold. First, the lower bound computations reduce to solving easily tractable linear matrix inequality (LMI) problems. Secondly, the lower bounding procedure guarantees global convergence of the algorithm when combined with an exhaustive partitioning of the space of complicating variables. A rigorous proof of this fact is provided. Another important feature is that the branching phase takes place in the space of complicating variables only, hence limiting the overall cost of the algorithm. Also, an important point in the method is that separated LMI constraints are encapsulated into an augmented BMI for improving the lower bound computations. Applications of the algorithm to robust structure/controller design are considered.
Turnbull, GA, McGloin, D, Lindsay, ID, Ebrahimzadeh, M & Dunn, MH 2000, 'Extended mode-hop-free tuning by use of a dual-cavity, pump-enhanced optical parametric oscillator', Optics Letters, vol. 25, no. 5, pp. 341-341.
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Turnbull, GA, McGloin, D, Lindsay, ID, Ebrahimzadeh, M & Dunn, MH 2000, 'Extended mode-hop-free tuning using a dual-cavity, pump-enhanced optical parametric oscillator', Conference on Lasers and Electro-Optics (CLEO 2000). Technical Digest. Postconference Edition. TOPS Vol.39 (IEEE Cat. No.00CH37088), pp. 521-522.
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This paper reports extended spectral tuning in PPLN-based PE-SROs. The devices described exhibit coarse wavelength tuning from 2.7 to 5.3 μm and smooth single-frequency scanning ranges of over 10 GHz. The latter is accomplished by a novel dual-cavity configuration in which mode-hopping is suppressed.
Turner, JC & Shannon, AG 2000, 'On Fibonacci sequences, geometry, and the m-square equation', FIBONACCI QUARTERLY, vol. 38, no. 2, pp. 98-103.
Val, DV, Stewart, MG & Melchers, RE 2000, 'Life-Cycle Performance of RC Bridges: Probabilistic Approach', Computer-Aided Civil and Infrastructure Engineering, vol. 15, no. 1, pp. 14-25.
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This article addresses the problem of reliability assessment of reinforced concrete (RC) bridges during their service life. First, a probabilistic model for assessment of time-dependent reliability of RC bridges is presented, with particular emphasis placed on deterioration of bridges due to corrosion of reinforcing steel. The model takes into account uncertainties associated with materials properties, bridge dimensions, loads, and corrosion initiation and propagation. Tune-dependent reliabilities are considered for ultimate and serviceability limit states. Examples illustrate the application of the model. Second, updating of predictive probabilistic models using site-specific data is considered. Bayesian statistical theory that provides a mathematical basis for such updating is outlined briefly, and its implementationfor the updating of information about bridge properties using inspection data is described in more detail. An example illustrates the effect of this updating on bridge reliability. © 2000 Computer-Aided Civil and Infrastructure Engineering. Published by Blackwell Publishers,.
van Eijkelenborg, MA, Canning, J, Ryan, T & Lyytikainen, K 2000, 'Bending-induced colouring in a photonic crystal fibre', OPTICS EXPRESS, vol. 7, no. 2, pp. 88-94.
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Veitch, D, Taqqu, MS & Abry, P 2000, 'Meaningful MRA initialization for discrete time series', Signal Processing, vol. 80, no. 9, pp. 1971-1983.
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Vigneswaran, S, Kwon, D, Ngo, H & Hu, J 2000, 'Improvement of microfiltration perfromance in water treatment: Is critical flux, a viable solution?', Water Science and Technology, vol. Volume 41, no. 0, pp. 309-310.
Vigneswaran, S, Ngo, HH, Hashimoto, K, Hasegawa, T & Watanabe, Y 2000, 'High rate floating medium flocculation-filtration with in-line polysilicato-iron (PSI) addition', ENVIRONMENTAL TECHNOLOGY, vol. 21, no. 3, pp. 317-325.
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The performance of a high rate floating medium flocculation-filtration system with an in-line addition of a silica-polymer compound, namely polysilicato-iron (PSI) has been investigated for water treatment. This study is intended to investigate the applicability of PSI as a sole flocculant or as a combined flocculant with an organic polymer in the downflow floating medium filter. The filter system was operated at a high loading rate of up to 60 m3 m-2 h-1. Filter column experiments were conducted at different PSI doses, filtration rates, filter depths and buoyant medium types and sizes. Results showed the filter system was able to yield uniform and filterable flocs (15 - 20 µm), even at a very high filtration rate of 60 m-3 h-1, through out the filter run time of 4 hours. Better filter performance was obtained when: (i) polystyrene beads of 1.9 mm diameter or polypropylene beads of 3.8 mm diameter; (ii) an in-line single dosage of 2.5 mg l-1 PSI; (iii) in-line combined dosages of 1.5 mg l-1 PSI and 0.4-0.6 mg l-1 organic polymers (cationic polyacrylamides, cationic polystyrene or Pollyallylamine hydrochloride) were used. When PSI was introduced as a sole flocculant, more than 90% turbidity was removed from a 54 NTU artificial kaolin clay suspension at a filtration rate of 30 m-3 m-2h-1 with very low headloss development. Greater removals were achieved when SIF was used in combination with a polymer (e.g.greater than 95% turbidity removal). Frequent (once in every 90 minutes) but short duration backwash (less than 60 s) by air and water enables the system to maintain a superior effluent quality (e.g. turbidity less than 1 NTU) during the filter run. Backwash water requirement was very low (approximately 1%-2% of filtered water production). A lower amount of sludge was produced from the filter in case of combined PSI and organic polymer coagulant addition.
Vu, KAT & Stewart, MG 2000, 'Structural reliability of concrete bridges including improved chloride-induced corrosion models', Structural Safety, vol. 22, no. 4, pp. 313-333.
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A structural deterioration reliability (probabilistic) model has been used herein to calculate probabilities of structural failure. New reinforced concrete corrosion initiation, corrosion rate and time-variant load models are proposed. Three durability design specifications are considered in a lifetime reliability analysis of a RC slab bridge. Time-variant increases in loads are considered also. It was found that the application of de-icing salts causes significant long-term deterioration and reduction in structural safety for poor durability design specifications. A reduced cover or increased water-cement ratio increases failure probabilities. When compared to the case of 'no deterioration', it was observed also that the probability of failure only marginally increased for good durability design specifications. The approaches described herein are relevant to other physical infrastructure also. © 2000 Elsevier Science Ltd. All rights reserved.
Waldron, KJ & Hubert, CJ 2000, 'Control of contact forces in wheeled and legged off-road vehicles', EXPERIMENTAL ROBOTICS VI, vol. 250, pp. 205-214.
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The use of variable configuration vehicles creates the possibility of direct control of the contact forces between the foot or wheel of a vehicle and the ground. That control is an important element of the coordination of practical walking machines. Cont
Wang, J & Yan, H 2000, 'A hybrid method for unconstrained handwritten numeral recognition by combining structural and neural “gas” classifiers', Pattern Recognition Letters, vol. 21, no. 6-7, pp. 625-635.
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Abstract: This paper presents a hybrid method for handwritten numeral recognition that combines two compensatory recognition algorithms by analysing their performance for several aspects. The skeleton-based structural recognition algorithm employed in this method is robust under distortion but sensitive to noise and flaws. On the other hand, the neural network classifier, which uses scaled binary images as features and the neural "gas" model for classification, is relatively immune to noise and flaws but sensitive to distortion. The different performances of the two algorithms for broken, connected or slanted numerals, and the measurement-level decision provided by the neural network are detected and combined with different strategies to develop matching rules for each recognition method. Five combination methods based on performance analysis are developed to meet different requirements. As the two algorithms have fairly compensatory properties, the proposed method improves the recognition rate and reliability by exploiting the advantages and avoiding the weaknesses of each classifier. The experimental results from a large set of data show the efficiency and robustness of the proposed method.
Watterson, PA 2000, 'Energy calculation of a permanent magnet system by surface and flux integrals (the flux-mmf method)', IEEE Transactions on Magnetics, vol. 36, no. 2, pp. 470-475.
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Watterson, PA, Woodard, JC, Ramsden, VS & Reizes, JA 2000, 'VentrAssist hydrodynamically suspended, open, centrifugal blood pump', ARTIFICIAL ORGANS, vol. 24, no. 6, pp. 475-477.
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Wei, D, Han, J, Xie, J, Fu, C, Wang, L & He, Y 2000, 'Experimental study on inner crack healing in steel during hot plastic deforming', Jinshu Xuebao/Acta Metallurgica Sinica, vol. 36, no. 6, pp. 622-625.
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The test that tries to heal inner crack in 20MnMo steel and 20 steel was carried out by using HIGH-MULTI 5000 hot-press equipment. Under the hot plastic deforming, the inner crack can be healed completely and ferrite has been discovered in the healing area. Contrasting to the resuts of high temperature healing treatment without plastic deforming, the healing process with hot plastic deforming is developed rapidly. Structural inhomogeneity between healing area and matrix can not be improved.
Wei, D, Han, J, Xie, J, Fu, C, Wang, L & He, Y 2000, 'Steel crack healing at elevated temperature in vacuum', Jinshu Xuebao/Acta Metallurgica Sinica, vol. 36, no. 7, pp. 713-717.
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The method of dissected sample heat treatment in vacuum was tried to study inner crack healing in steel at elevated temperature. The dissected samples with prepared inner crack were encapsulated in quartz glass tubes of 133×10-4 Pa, then were heat treated at elevated temperature. The cracks on section planes of 20MnMo, 20 and 45 steels were healed, and the ferrite appears in healing area. The results are similar as that of intact sample heat treatment, which indicates that the dissected sample heat treatment method is feasible for studying inner crack healing in steel. It was deduced that surface cracks of steel could be healed in vacuum environment at elevated temperature if it was not covered by oxide. The welding at elevated temperature is more effective for crack healing than other mechanisms during higher temperature.
Willey, K 2000, 'Selecting a pedestal for tracking LEO satellites at Ka band', MICROWAVE JOURNAL, vol. 43, no. 4, pp. 118-+.
Ying, MS 2000, 'Automata theory based on quantum logic II', INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, vol. 39, no. 11, pp. 2545-2557.
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We establish the pumping lemma in automata theory based on quantum logic under certain conditions on implication, and discuss the recognizability by the product and union of orthomodular lattice-valued (quantum) automata. In particular, we show that the
Ying, MS 2000, 'Automata theory based on quantum logic. (I)', INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, vol. 39, no. 4, pp. 985-995.
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We present a basic Framework of automats theory based on quantum logic. In particular, we introduce the orthomodular lattice-valued (quantum) predicate of recognizability and establish some of its fundamental properties.
Zhang, J, Arnold, JF & Frater, MR 2000, 'A cell-loss concealment technique for MPEG-2 coded video', IEEE Transactions on Circuits and Systems for Video Technology, vol. 10, no. 4, pp. 659-665.
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Audio-visual and other multimedia services are seen as important sources of traffic for future telecommunication networks, including wireless networks. A major drawback with some wireless networks is that they introduce a significant number of transmissi
Zhang, XP, Wang, CH, Li, JC, Mai, YW & Ye, L 2000, 'A Combined Model of Short Crack Closure Accounting for Both Plasticity and Roughness Induced Crack Closures', Key Engineering Materials, vol. 183-187, pp. 217-222.
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ZHU, XQ & LAW, SS 2000, 'IDENTIFICATION OF VEHICLE AXLE LOADS FROM BRIDGE DYNAMIC RESPONSES', Journal of Sound and Vibration, vol. 236, no. 4, pp. 705-724.
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Alkhatib, A & Krunz, M 1970, 'Application of chaos theory to the modeling of compressed video', IEEE International Conference on Communications, IEEE International Conference on Communications (ICC 2000), IEEE, NEW ORLEANS, LA, pp. 836-840.
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In this paper, we apply nonlinear chaos theory in modeling and forecasting variable-bit-rate (VBR) video sequences. Nonlinear chaos modeling offers an alternative approach to stochastic (typically, linear) approaches, with the advantages of lower dimensionality and more determinism. However, the goodness of its predictions strongly depends on the accuracy with which the dimensionality of a chaotic model is estimated from empirical data. The contributions of this paper are twofold. First, we present a novel approach for estimating the embedding dimension of any chaotic time series that satisfies the functional relationship of Farmer and Sidorowich. The proposed approach is applied to VBR video data and is used to show the existence of chaos in packetized video traffic. Second, we develop a chaos-theory-based model for VBR intra-coded video, which can be used to generate a rich set of synthetic traces that exhibit similar statistical structure to the original data. These traces are useful in performance evaluation and resource allocation in integrated computer networks.
Ball, JE 1970, 'Modelling pollutants in stormwater runoff', Hydro 2000 interactive hydrology : proceedings of the 3rd International Hydrology and Water Resources Symposium of the Institution of Engineers, The Institution of Engineers, Perth, Western Australia, pp. 1-6.
Ball, JE 1970, 'Parameter estimation for urban stormwater models', Hydro 2000 interactive hydrology : proceedings of the 3rd International Hydrology and Water Resources Symposium of the Institution of Engineers, Hydrology and Water Resources Symposium, The Institution of Engineers, Perth, Western Australia, pp. 1-6.
Ball, JE 1970, 'Runoff from road surfaces - how contaminated is it?', Hydro 2000 interactive hydrology : proceedings of the 3rd International Hydrology and Water Resources Symposium of the Institution of Engineers, Hydrology and Water Resources Symposium, Institution of Engineers, Australia, Perth, Western Australia, pp. 1-6.
Ball, JE & Cordery, I 1970, 'Information and hydrology', Hydro 2000 : 3rd International Hydrology and Water Resources Symposium of the Institution of Engineers, Australia, Institution of Engineers Australia, Perth, Australia, pp. 997-1001.
Bidkar, A, Vigneswaran, S, Milne-Home, WA, Ngo, H & Moon, H 1970, 'Adsorption of Metsulfuron-Methyl on Granular Activated Carbon', Proceedings of the 4th International Symposium on Environmental Geotechnology and Global Sustainable Development, CEEST, Boston (Danvers), Massachusetts, USA, pp. 1079-1086.
Bird, TS, Hay, SG, Parfitt, AJ, Rao, N, Ward, D, Mahon, SJ, Dadello, A, Barker, SJ & Sprey, MA 1970, 'Australian Ka-band technology for FedSat', Journal of Electrical and Electronics Engineering, Australia, pp. 195-202.
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Advanced Ka-band space qualified hardware has been developed for communications and propagation experiments with low earth orbiting (LEO) satellite systems as part of the Co-operative Research Centre for Satellite Systems' FedSat mission, which is planned for 2001. This paper describes a 20/30 GHz transponder and its components, highlighting Australian monolithic microwave integrated circuit (MMIC), antenna and system engineering contributions.
Canning, J, Englund, M & Sommer, K 1970, 'Fibre gratings for high temperature sensor applications', 14TH INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS, 14th International Conference on Optical Fiber Sensors, SPIE-INT SOC OPTICAL ENGINEERING, VENICE, ITALY, pp. A1-A4.
Castel, A, Francois, R & Arliguie, G 1970, 'Factors other than chloride level influencing corrosion rate of reinforcement', American Concrete Institute, ACI Special Publication, pp. 629-644.
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To evaluate the degree of corrosion, reinforcements of a fourteen-year-old concrete member were completely bared. The 3-meter long beams were stored in 3-point flexion in an aggressive environment made by sequences of drying and wetting by a salt fog (35g/l). The total chloride content was also measured at the level of all reinforcements. Because of the small concrete cover (10 mm for the stirrups and 16 mm for the longitudinal reinforcement), the chloride content appears to be significantly greater than the threshold usually used to evaluate the initiation of corrosion. Carbonation front was also measured and was only about 4 mm. Nevertheless, the degree of corrosion (mass loss calculation) shows no correlation with chloride content, as some large parts of reinforcement are not affected by corrosion. As a result, corrosion damage seems to be linked to a degradation of the steel-concrete interface. For tensile reinforcement, it corresponds to a mechanical degradation whereas for compression reinforcement it corresponds to the bleeding. This observation leads us to question ourselves about the relevance of a single value for the corrosion threshold. The nature of the interface between the steel and the concrete must be considered.
Chainais, P, Abry, P & Veitch, D 1970, 'Multifractal analysis and α-stable processes: a methodological contribution', 2000 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.00CH37100), 2000 International Conference on Acoustics, Speech and Signal Processing, IEEE, IEEE, pp. 241-244.
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Chen, C & Zhou, W 1970, 'AN ARCHITECTURE FOR RESOLVING NETWORK PARTITIONING', 15th International Conference on Computers and Their Applications 2000, CATA 2000, pp. 84-87.
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Network partitioning is harder to deal with than many other failure problems in a distributed environment This paper presents a solution of using reactive system architecture to solve partitioning problem with the Primary/Non-Primary replication control protocol. The reactive system concepts are an attractive paradigm in fault-tolerant computing because it separates policies from mechanisms. In the paper, DMM, sensor and actuator modules are implemented to achieve the mechanisms for failure detecting, notifying and resolving.
Chilakapati, N, Ramsden, VS, Ramaswamy, V & Zhu, JG 1970, 'Comparison of closed-loop speed control schemes for a doubly fed twin stator induction motor drive', IPEMC 2000: THIRD INTERNATIONAL POWER ELECTRONICS AND MOTION CONTROL CONFERENCE, VOLS 1-3, PROCEEDINGS, International Academic Publishers World Publishing Corporation, China, pp. 786-791.
Chilakapati, N, Ramsden, VS, Ramaswamy, V, Zhu, JG & Jayatileke, S 1970, 'Current space vector control of doubly fed twin stator induction machine drive', 2000 INTERNATIONAL CONFERENCE ON POWER SYSTEM TECHNOLOGY, VOLS I-III, PROCEEDINGS, IEEE, WA, Australia, pp. 73-78.
Crews, KI 1970, 'Development of limit states design methods for stress-laminated timber cellular bridge decks', World Conference on Timber Engineering 2000, World Conference on Timber Engineering, University of British Columbia, Vancouver, Canada, pp. 0-0.
Damian, DE, Shaw, ML, Gaines, BR & Zowghi, D 1970, 'A Multidisciplinary approach to the study of distributed requirements negotiation', Fifth Australian Workshop on Requirements Engineering (AWRE2000), Australian Workshop on Requirements Engineering, Faculty of Information Technology, Brisbane, Australia, pp. 91-100.
Darwood, P, Oppermann, I, Jakas, S & Linton, W 1970, 'Mobile network traffic forecasting', Vehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference (Cat. No.00CH37152), Vehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference, IEEE, BOSTON, MA, pp. 2932-2936.
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Donaton, RA, Iacopi, F, Baklanov, MR, Shamiryan, D, Coenegrachts, B, Struyf, H, Lepage, M, Meuris, M, Van Hove, M, Gray, WD, Meynen, H, De Roest, D, Vanhaelemeersch, S, Maex, K, IEEE & IEEE 1970, 'Physical and electrical characterization of silsesquioxane-based ultra-low k dielectric', PROCEEDINGS OF THE IEEE 2000 INTERNATIONAL INTERCONNECT TECHNOLOGY CONFERENCE, 3rd Annual International Interconnect Technology Conference, IEEE, SAN FRANCISCO, CA, pp. 93-95.
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Drake, BJ & Beydoun, G 1970, 'Predicate logic-based incremental KA', Proceedings of the 6th Pacific Knowledge Acquisition Workshop (PKAW 2000), 6th Pacific Knowledge Acquisition Workshop, Sydney, Australia, pp. 71-88.
Franklin, D, Jiangtao Xi & Chicharo, J 1970, 'An improved channel model for ADSL and VDSL systems', WCC 2000 - ICCT 2000. 2000 International Conference on Communication Technology Proceedings (Cat. No.00EX420), 16th International Conference on Communication Technology (ICCT'00), IEEE, Beijing, China, pp. 30-33.
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This paper examines existing channel models used with xDSL systems and identifies a key shortcoming - namely, the implicit assumption that all impulse noise originates at the transmitter. Based on extensive data collected from the local loop, a new model is proposed which addresses this problem by combining a digital filter model of the transmission line with a distributed noise source. This better reflects the nature of a real telephone line, and thus provides a more solid basis for simulation and optimisation of xDSL systems
Goyal, M & Parameswaran, N 1970, 'A Coherent Teamwork Model in a Dynamic Environment.', FLAIRS Conference, pp. 128-132.
Goyal, M & Parameswaran, N 1970, 'A Complete Teamwork Model in a Dynamic Environment', MICAI 2000: ADVANCES IN ARTIFICIAL INTELLIGENCE, PROCEEDINGS, Mexican International Conference on Artificial Intelligence (MICAI 2000), Springer Berlin Heidelberg, ACAPULCO, MEXICO, pp. 718-728.
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Gu, L, Bone, D & Reynolds, G 1970, 'Replay Detection in Sports Video Sequences', Springer Vienna, pp. 3-12.
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Hawking, P & McCarthy, B 1970, 'Industry collaboration', Proceedings of the Australasian conference on Computing education - ACSE '00, the Australasian conference, ACM Press, Melbourne, Victoria, pp. 134-138.
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Holtzman, R, Kastner, R, Heyman, E & Ziolkowski, RW 1970, 'Stability analysis of the Green's function method (GFM) used as an ABC for arbitrarily-shaped boundaries', IEEE Antennas and Propagation Society International Symposium. Transmitting Waves of Progress to the Next Millennium. 2000 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.00CH37118), IEEE Antennas and Propagation Society International Symposium. Transmitting Waves of Progress to the Next Millennium, IEEE, SALT LAKE CITY, UT, pp. 1358-1361.
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Huang, M 1970, 'Information Visualization in Web site mapping', World Multiconference on Systemics, Cybernetics and Informatics SCI 2000, World Multi-Conference on Systematics, Cybernetics and Informatics, IIIS, Orlando, Florida, USA, pp. 390-395.
Jegatheesan, V, Ngo, H & Vigneswaran, S 1970, 'High rate filtration using buoyant medium: experiments and mathematical models', Critical Technologies to the World in 21st century: Pollution Control and Reclamation in process industries, International Water Association, Beijing, China, pp. 0-0.
Jones, EL 1970, 'Software testing in the computer science curriculum -- a holistic approach', Proceedings of the Australasian conference on Computing education - ACSE '00, the Australasian conference, ACM Press, pp. 158-162.
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© 2000 ACM. The traditional approach to introductory programming has students writing complete programs, as early as possible. Also, the traditional emphasis is on the technology, not the explicit cognitive development of the student This approach jumps to the fifth and sixth levels of Bloom's Taxonomy of Educational Objectives, when these last two levels depend upon competence in the first four levels. I describe my alternative approach that addresses the six stages in sequence, emphasising effective assessment processes for the first four levels.
Kennedy, PJ & Osborn, T 1970, 'Evolution of Adaptive Behaviour in a Simulated Single-Celled Organism', SAB 2000 Proceedings Supplement Book; Sixth International Conference on Simulation of Adaptive Behaviour: From Animals to Animats, The International Society for Adaptive Behavior, Paris, France, pp. 225-234.
Korkmaz, T, Krunz, M & Tragoudas, S 1970, 'An efficient algorithm for finding a path subject to two additive constraints', ACM SIGMETRICS Performance Evaluation Review, International Conference on Measurement and Modeling of Computer Systems (ACM SIGMETRICS 2000), Association for Computing Machinery (ACM), SANTA CLARA, CA, pp. 318-327.
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One of the key issues in providing end-to-end quality-of-service guarantees in packet networks is how to determine a
feasible
route that satisfies a set of constraints while simultaneously maintaining high utilization of network resources. In general, finding a path subject to multiple
additive
constraints (e.g., delay, delay-jitter) is an NP-complete problem that cannot be exactly solved in polynomial time. Accordingly, heuristics and approximation algorithms are often used to address to this problem. Previously proposed algorithms suffer from either excessive computational cost or low performance. In this paper, we provide an efficient approximation algorithm for finding a path subject to two additive constraints. The worst-case computational complexity of this algorithm is within a logarithmic number of calls to Dijkstra's shortest path algorithm. Its average complexity is much lower than that, as demonstrated by simulation results. The performance of the proposed algorithm is justified via theoretical performance bounds. To achieve further performance improvement, several extensions to the basic algorithm are also provided at low extra computational cost. Extensive simulations are used to demonstrate the high performance of the proposed algorithm and to contrast it with other path selection algorithms.
Kristensen, M, Canning, J & Ryan, T 1970, 'Mode-coupling in photonic crystal fibers with multiple cores', Conference on Lasers and Electro-Optics Europe - Technical Digest, p. 17.
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A photonic crystal fiber (PCF) is fabricated with multiple cores by drawing a fiber preform from stacked glass tubes. Transmission is high through each core despite many defects in the cladding, indicating that the guidance is determined by the holes near the core. It is observed that there is no change in the mode-field pattern, when changing the in coupling or bending the fiber, confirming the single-mode behavior.
Law, SS, Howe, D & Zhu, XQ 1970, 'Modal strain energy change in neural network damage assessment', ADVANCES IN STRUCTURAL DYNAMICS, VOLS I & II, International Conference on Advances in Structural Dynamics (ASD 2000), ELSEVIER SCIENCE BV, HONG KONG, PEOPLES R CHINA, pp. 1037-1044.
Li, J, Ramamohanarao, K & Dong, G 1970, 'Emerging Patterns and Classification', ADVANCES IN COMPUTING SCIENCE-ASIAN 2000, PROCEEDINGS, 6th Asian Computing Science Conference, Springer Berlin Heidelberg, GEORGE TOWN, MALAYSIA, pp. 15-32.
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Lister, R 1970, 'On blooming first year programming, and its blooming assessment', Proceedings of the Australasian conference on Computing education - ACSE '00, the Australasian conference, ACM Press, Melbourne, Australia, pp. 158-162.
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The traditional approach to introductory programming has students writing complete programs, as early as possible. Also, the traditional emphasis is on the technology, not the explicit cognitive development of the student. This approach jumps to the fifth and sixth levels of Bloom's Taxonomy of Educational Objectives, when these last two levels depend upon competence in the first four levels. I describe my alternative approach that addresses the six stages in sequence, emphasising effective assessment processes for the first four levels.
Liu, D, Zhang, N, Jeyakumaran, JM & Villanueva, L 1970, 'Dynamics and Shift Control of Automatic Transmissions', Proc. of the Fifth International Conference on Motion and Vibration Control, International Conference on Motion and Vibration Control, UTS, Sydney, australia, pp. 597-602.
Liu, D, Zhang, N, Lu, F & Q, SL 1970, 'Optimal Number and Positions of Actuators in Actively Controlled Structures', Proc. of the 5th International Conference on Motion and Vibration Control, International Conference on Motion and Vibration Control, UTS, Sydney, Australia, pp. 347-352.
Lu, HY, Zhu, JG, Ramsden, VS, IEEE, IEEE & IEEE 1970, 'Comparison of experimental techniques for determination of stray capacitances in high frequency transformers', PESC 2000: 31ST ANNUAL IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-3, IEEE, Ireland, pp. 1645-1650.
Marjanovic, O 1970, 'Dynamic Verification of Temporal Constraints in Production Workflows.', Australasian Database Conference, IEEE Computer Society, pp. 74-81.
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Primitive support for time management has been recognised as one of the most significant limitations of today's workflows. In this paper, we propose a new temporal model for production workflows. After introducing basic features of the temporal model, we describe two time visualisation concepts: the duration space and the instantiation space that are used respectively for representation of relative and absolute (real) time. Then, we illustrate how these concepts may be applied to modeling of absolute and relative deadline constraints and dynamic verification of their temporal consistency. The work presented sets foundations for more advanced workflow management that includes features such as monitoring of workflow execution, reasoning about deadlines as well as management of workloads and learning about deadlines.
Masjuki, HH, Mahlia, TMI, Choudhury, IA & Saidur, R 1970, 'A literature review on energy efficiency standards and labels for household electrical appliances', 2000 TENCON Proceedings. Intelligent Systems and Technologies for the New Millennium (Cat. No.00CH37119), 2000 TENCON Proceedings. Intelligent Systems and Technologies for the New Millennium, IEEE, KUALA LUMPUR, MALAYSIA, pp. A103-A107.
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Masjuki, HH, Saidur, R, Choudhury, IA & Mahlia, TMI 1970, 'Factors effecting energy consumption of household refrigerator-freezers', 2000 TENCON Proceedings. Intelligent Systems and Technologies for the New Millennium (Cat. No.00CH37119), 2000 TENCON Proceedings. Intelligent Systems and Technologies for the New Millennium, IEEE, KUALA LUMPUR, MALAYSIA, pp. A92-A96.
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McGloin, D & Dunn, MH 1970, 'Simple theory of microwave induced transparency in atomic and molecular systems', Journal of Modern Optics, 14th National Quantum Electronics Conference, Informa UK Limited, MANCHESTER, ENGLAND, pp. 1887-1897.
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McGloin, D, Turnbull, GA & Dunn, MH 1970, 'Radio frequency field manipulation of electromagnetically induced transparency', IQEC, International Quantum Electronics Conference Proceedings, p. 18.
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Electromagnetically-induced transparency (EIT) in a three-level cascade configuration is examined in 85Rb(5S1/2-5P3/2-5D5/2), and two-photon EIT processes are used to resolve the hyperfine levels in the upper level of the coupling field transition. By coupling a radio-frequency field into one of these hyperfine transitions, EIT resonances corresponding to the hyperfine levels are either inhibited or enhanced, depending on the position of the hyperfine transitions in relation to the applied radio-frequency field. The roles of level splitting and three-photon resonance peaks in the resulting spectra are discussed.
McGloin, D, Turnbull, GA, Lindsay, ID, Ebrahimzadeh, M & Dunn, MH 1970, 'Methods for extending mode-hop-free tuning using a dual-cavity, pump-enhanced optical parametric oscillator', Conference on Lasers and Electro-Optics Europe - Technical Digest, p. 15.
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Continuous wave optical parametric oscillators (OPO) are well suited for high-resolution spectroscopy applications. Common cavity doubly resonant OPOs (DRO) exhibit signal and idler tuning ranges equivalent to several cavity free spectral ranges (FSR). Changes in the idler frequency were observed using a Michelson interferometer.
Ngo, HH, Vigneswaran, S, Kim, SH, Bidkar, A & Moon, H 1970, 'Microfiltration-adsorption hybrid system in organics removal from water', Water Science and Technology, 2nd International Conference on Membrane Technology in Environmental Management, I W A PUBLISHING, TOKYO, JAPAN, pp. 51-57.
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A series of experiments was conducted with a Millipore flat plate microfiltration module modified to incorporate in-line powdered activated carbon (PAC) addition In-line PAC was mixed continuously through a spiral mixing device for a predetermined time prior entering a membrane unit. The results showed that this system is excellent in removing fulvic acid (FA). This system provides to sufficient contact time for PAC to adsorb organics compared to the system with in-line adsorbent addition. More than 85% of FA was removed from water containing 8 mg/l of FA. To achieve this following conditions were used:.(i) a velocity gradient G (mixing intensity) of 160.4 s-1; (ii) a hydraulic residence time (mixing time) of 4 minutes; (iii) a PAC dose of 260 mg/l; and (iv) membrane pore size of 0.22 μm. In case of low FA concentration (e.g. 1.2 mg/l) in water, the removal efficiency was almost 100%. The removal efficiency also increased with the increase of mixing intensity and mixing timer. The permeate flux slightly improved when a membrane of pore size 0.22 μm was used with shorter hydraulic residence time and lower PAC concentration. This paper presents a mathematical model developed based on surface diffusion. The model successfully predicted the performance of this hybrid system.
Nguyen, HT, Ha, QP, Rye, D & Durrant-Whyte, H 1970, 'Low level control of electrohydraulic systems', Japan-USA-Vietnam Workshop on research and education in systems, computation and control engineering, Institute of Applied Mechanics NCSR Vietnam, HochiMinh City Vietnam, pp. 281-291.
O'Neill, T, Leaney, J & Martyn, P 1970, 'Architecture-based performance analysis of the COLLINS class submarine Open System Extension (COSE) Concept Demonstrator (CD)', Proceedings of the International Symposium and Workshop on Engineering of Computer Based Systems, IEEE International Conference and Workshop on the Engineering of Computer Based Systems, IEEE Computer Society, Edinburgh, UK, pp. 26-35.
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Being able to predict the overall performance of a computer based system, prior to building it, is one of the greatest challenges facing system engineers today. The emerging discipline of system architecture, by defining a high level abstraction of the overall structure of the system, hopes to provide the foundation for this reasoning. The authors demonstrate an architecture-based performance analysis technique on the COLLINS class submarine Open System Extension (COSE) Concept Demonstrator (CD) system. The layered architectural design of the COSE CD system, together with it's normally probabilistic, repeatable and predictable nature for varying loads, makes it suitable to an architecture-based approach to performance analysis. An architectural model of the system is developed and populated and then used to predict the performance characteristics of service time, waiting time, response time and device utilisation. These predictions are then verified against theoretical performance predictions and validated against a preliminary implementation of the system.
Peters, MW & Drake, BJ 1970, 'Fundamental Robust Self-Organising Vision', Proceedings of the Fourth Japan-Australia Joint Workshop on Intelligent and Evolutionary systems, 4th Japan-Australia Joint Workshop on Intelligent and Evolutionary Systems, Yokosuka, Japan.
Rao, N, Parfitt, A, Dadello, A, Ward, D & Bird, T 1970, 'A Low Noise Ka-Band Down Converter for Space Applications', 30th European Microwave Conference, 2000, 30th European Microwave Conference, 2000, IEEE.
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A Ka-band down converter has been developed for use in a transponder to be flown on board a Low Earth Orbiting (LEO) satellite called Fedsat. The down converter employs a single Monolithic Microwave Integrated Circuit (MMIC) which combines the functions of a low noise amplifier and a mixer. The down converter unit has been designed with a particular emphasis on the choice of right materials, components, packaging and assembly techniques with a goal to achieve a low cost unit qualified for space environment. © 2000 IEEE.
Stewart, MG 1970, 'Optimization of Durability Design Specifications for RC Structures', Advanced Technology in Structural Engineering, Structures Congress 2000, American Society of Civil Engineers.
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A structural deterioration life-cycle reliability model is used herein to calculate probabilities of cracking and spalling for typical RC structures. The influence of mix composition (water-cement ratio, concrete compressive strength) and cover on corrosion rates are included in the analysis. Life-cycle costs are estimated using time-dependent probabilities of failure calculated for annual increments over the lifetime of the structure (100 years). It was found that reducing the cover from that currently specified for design results in a significant increase in life-cycle costs. Copyright 2004 ASCE.
Su, SW, Anderson, BDO, Brinsmead, TS, SOCIETY, ICS, SOCIETY, ICS & SOCIETY, ICS 1970, 'Robust disturbance suppression for nonlinear systems based on H(infinity) control', PROCEEDINGS OF THE 39TH IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-5, IEEE, Sydney, Australia, pp. 3013-3018.
Tuan, HD & Apkarian, P 1970, 'Monotonic relaxation for robust control: new characterization', Proceedings of the 2000 American Control Conference. ACC (IEEE Cat. No.00CH36334), Proceedings of 2000 American Control Conference (ACC 2000), IEEE, CHICAGO, IL, pp. 1914-1918.
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Umakhanthan, K & Ball, JE 1970, 'Integration of hydroinformatics with catchment models', Proc. 4th International Conference Hydroinformatics 2000, International Conference on Hydroinformatics, Iowa Institute of Hydraulic Research, Iowa, USA, pp. 1-8.
Umakhanthan, K & Ball, JE 1970, 'The influence of spatially variable rainfall on runoff hydrographs', Proc. Twelfth Congress of Asia Pacific Division of ADP-IAHR, Twelfth Congress of Asia Pacific Division of ADP-IAHR, GTrade Limited Partnership, Bangkok, Thailand, pp. 817-827.
Veitch, D, Abry, P, Flandrin, P & Chainais, P 1970, 'Infinitely divisible cascade analysis of network traffic data', 2000 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.00CH37100), 2000 International Conference on Acoustics, Speech and Signal Processing, IEEE, IEEE, pp. 245-248.
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Vigneswaran, S, Kwon, DY, Ngo, HH & Hu, JY 1970, 'Improvement of microfiltration performance in water treatment: is critical flux a viable solution?', Water Science and Technology, 2nd International Conference on Membrane Technology in Environmental Management, IWA Publishing, TOKYO, JAPAN, pp. 309-315.
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In this study, three definitions for critical flux were introduced based on the crossflow microfiltration (CFMF) experiments conducted under an operational mode of constant permeate flux. The critical flux based on material balance was calculated from the rate of particles deposition. The highest permeate flux results in no particle deposition being taken at the critical flux. The second definition was based on the increase in transmembrane pressure (TMP). The critical flux based on the TMP increase is the flux below which the membrane fouling does not occur. The third definition was based on the direct observation of particles deposition through microscope. Detailed experiments were conducted with synthetic suspension of different sizes of latex particles. Long term experiments conducted with polydispersed kaolin clay suspension indicated that the critical flux based on material balance concept is more realistic in field conditions.
von Bibra, ML, Roberts, A & Canning, J 1970, 'Long period fibre gratings made with focussed ion beam irradiation', Proceedings of SPIE - The International Society for Optical Engineering, 14th International Conference on Optical Fiber Sensors, SPIE-INT SOC OPTICAL ENGINEERING, VENICE, ITALY, pp. 604-607.
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Long period gratings have been made in non-photosensitive optical fibres by maskless irradiation of the fibre core with a focussed beam of high energy protons. The irradiated fibres exhibit a strongly wavelength dependent transmission.
Willey, K 1970, 'Antenna Optimization to Minimize Pointing Loss', Proceedings 6th Ka Band Utilization Conference, 6th Ka Band Utilization Conference, Instituto Internazionale Delle Comunicazioni, Cleveland, Ohio, USA..
Wu, Y, Samali, B, Li, J & Bakoss, S 1970, 'Shock test and stress analysis of a heavy metal-forge', The 7th International Symposium of Structural Failure and Plasticity, Elsevier, Melbourne, Australia, pp. 165-170.
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Ying, M & Wirsing, M 1970, 'Approximate bisimilarity', ALGEBRAIC METHODOLOGY AND SOFTWARE TECHNOLOGY, PROCEEDINGS, Algebraic Methodology and Software Technology, Springer-Verlag Berlin, Iowa City, Iowa, pp. 309-322.
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We introduce a notion of approximate bisimilarity in order to be able to reason about the approximate equivalence of processes. Approximate bisimilarity is based on the notion of bisimulation index for labelled transition systems. We establish some basic properties of bisimulation indexes and give a Hennessy-Milner logical characterization of approximate bisimilarity. As an application we show how to describe approximate correctness of real time systems by giving an example in real time ACP.
Zhu, SZ, Zheng, JH, Li, L, Shen, SD, Luo, GM, IEEE & IEEE 1970, 'Effect of load modeling on voltage stability', 2000 IEEE POWER ENGINEERING SOCIETY SUMMER MEETING, CONFERENCE PROCEEDINGS, VOLS 1-4, IEEE Power-Engineering-Society Summer Meeting, IEEE, SEATTLE, WA, pp. 395-400.
Zhu, XQ & Law, SS 1970, 'Moving load identification using a time domain technique', ADVANCES IN STRUCTURAL DYNAMICS, VOLS I & II, International Conference on Advances in Structural Dynamics (ASD 2000), ELSEVIER SCIENCE BV, HONG KONG, PEOPLES R CHINA, pp. 601-608.
Zowghi, D 1970, 'A requirements engineering process model based on defaults and revisions', 11TH INTERNATIONAL WORKSHOP ON DATABASE AND EXPERT SYSTEMS APPLICATION, PROCEEDINGS, International Conference on Database and Expert Systems Applications, IEEE Computer Society, Greenwich, London, UK, pp. 966-970.
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Zowghi, D, Offen, R & Nurmuliani, N 1970, 'The Impact of Requirements Volatility on the Software Development Lifecycle', 16th World Computer Congress 2000, Proceedings of Conference on Software: Theory and Practice, Publishing House of Electronics Industry, Beijing, China, pp. 19-27.
