Publications

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, 'Low nonconvexity-rank bilinear matrix inequalities: algorithms and applications in robust controller and structure designs', IEEE Transactions on Automatic Control, vol. 45, no. 11, pp. 2111-2117.
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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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Apkarian, P, Pellanda, PC & Tuan, HD 2000, 'Mixed H2/H∞ multi-channel linear parameter-varying control in discrete time', Systems & Control Letters, vol. 41, no. 5, pp. 333-346.
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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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Abstract: Flow rate and pressure difference (or head) are key variables needed in the control of implantable rotary blood pumps. However, use of flow and/or pressure probes can decrease reliability and increase system power consumption and expense. For a given fluid viscosity, the flow state is determined by any 2 of the 4 pump variables: Flow, pressure difference, speed, and motor input power can be used. Thus, if viscosity is known or if its influence is sufficiently small, flow rate and pressure difference can be estimated from the motor speed and motor input power. For the VentrAssist centrifugal blood pump, which uses a hydrodynamic bearing, sensorless flow and pressure head estimation accuracy of 2 of our impeller designs were compared for a viscosity range of 1.2 to 4.5 mPas. This showed impeller design optimization can improve estimation accuracy. We also compared estimation accuracy using 2 blood analogues used in vitro, aqueous glycerol and red blood cells suspended in Haemaccel. The nature of the blood analogue and not only the viscosity of the fluid seems to influence estimation accuracy in our pump.

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

Chong, NR, Burnett, IS & Chicharo, JF 2000, 'A new waveform interpolation coding scheme based on pitch synchronous wavelet transform decomposition', IEEE Transactions on Speech and Audio Processing, vol. 8, no. 3, pp. 345-348.
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Chong, NR, Burnett, IS & Chicharo, JF 2000, 'Use of the Pitch Synchronous Wavelet Transform as a new decomposition for WI', Speech and Audio Processing, IEEE Transactions on, vol. 8, no. 3, pp. 345-348.
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Chong-White, NR & Burnett, IS 2000, 'Accurate, critically sampled characteristic waveform surface construction for waveform interpolation decomposition', Electronics Letters, vol. 36, no. 14, pp. 1245-1245.
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Chong-White, NR & Burnett, IS 2000, 'Improved signal analysis and time-synchronous reconstruction in waveform interpolation coding', 2000 IEEE Workshop on Speech Coding. Proceedings. Meeting the Challenges of the New Millennium (Cat. No.00EX421), pp. 56-58.
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Cucchiara, R, Grana, C, Piccardi, M & Prati, A 2000, 'Statistic and knowledge-based moving object detection in traffic scenes', ITSC2000. 2000 IEEE Intelligent Transportation Systems. Proceedings (Cat. No.00TH8493), pp. 27-32.
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Cucchiara, R, Piccardi, M & Mello, P 2000, 'Image analysis and rule-based reasoning for a traffic monitoring system', IEEE Transactions on Intelligent Transportation Systems, vol. 1, no. 2, pp. 119-130.
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The paper presents an approach for detecting vehicles in urban traffic scenes by means of rule-based reasoning on visual data. The strength of the approach is its formal separation between the low-level image processing modules (used for extracting visual data under various illumination conditions) and the high-level module, which provides a general-purpose knowledge-based framework for tracking vehicles in the scene. The image-processing modules extract visual data from the scene by spatio-temporal analysis during daytime, and by morphological analysis of headlights at night. The high-level module is designed as a forward chaining production rule system, working on symbolic data, i.e., vehicles and their attributes (area, pattern, direction, and others) and exploiting a set of heuristic rules tuned to urban traffic conditions. The synergy between the artificial intelligence techniques of the high-level and the low-level image analysis techniques provides the system with flexibility and robustness.

Cucchiara, R, Piccardi, M & Prati, A 2000, 'Hardware prefetching techniques for cache memories in multimedia applications', Proceedings Fifth IEEE International Workshop on Computer Architectures for Machine Perception, pp. 311-319.
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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.

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

Johnson, IR, Tellambura, C, Guo, YJ & Barton, SK 2000, 'HIPERLAN receiver design issues: noise performance and frequency offset compensation', International Journal of Wireless Information Networks, vol. 7, no. 1, pp. 29-41.
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This paper is concerned with some physical layer issues for HIPERLAN. First, the noise performance required of each class of receivers in HIPERLAN is determined. Secondly, the effect of frequency offset on the performance of equalisers is investigated and various techniques for joint equalisation and frequency offset compensation are studied. It is shown that by employing a decision feedback equaliser incorporating a second order phase locked loop, the effect of both the intersymbol interference and frequency offset can be significantly reduced. Using such a technique, the packet error ratio (PER) of a HIPERLAN radio link in a multipath channel is found by simulation.

Johnston, JB, Jiang, Y, van Marle, G, Mayne, MB, Ni, W, Holden, J, McArthur, JC & Power, C 2000, 'Lentivirus Infection in the Brain Induces Matrix Metalloproteinase Expression: Role of Envelope Diversity', Journal of Virology, vol. 74, no. 16, pp. 7211-7220.
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ABSTRACTInfection of the brain by lentiviruses, including human immunodeficiency virus (HIV) and feline immunodeficiency virus (FIV), causes inflammation and results in neurodegeneration. Molecular diversity within the lentivirus envelope gene has been implicated in the regulation of cell tropism and the host response to infection. Here, we examine the hypothesis that envelope sequence diversity modulates the expression of host molecules implicated in lentivirus-induced brain disease, including matrix metalloproteinases (MMP) and related transcription factors. Infection of primary macrophages by chimeric HIV clones containing brain-derived envelope fragments from patients with HIV-associated dementia (HAD) or nondemented AIDS patients (HIV-ND) showed that MMP-2 and -9 levels in conditioned media were significantly higher for the HAD clones. Similarly, STAT-1 and JAK-1 levels were higher in macrophages infected by HAD clones. Infections of primary feline macrophages by the neurovirulent FIV strain (V1CSF), the less neurovirulent strain (Petaluma), and a chimera containing the V1CSF envelope in a Petaluma background (FIV-Ch) revealed that MMP-2 and -9 levels were significantly higher in conditioned media from V1CSF- and FIV-Ch-infected macrophages, which was associated with increased intracellular STAT-1 and JAK-1 levels. The STAT-1 inhibitor fludarabine significantly reduced MMP-2 expression, but not MMP-9 expression, in FIV-infected macrophages. Analysis of MMP mRNA and protein levels in brain samples from HIV-infected persons or FIV-infected cats showed that MMP-2 and -9 levels were significantly increased in lentivirus-infected brains compared to those of uninfected controls. Elevated MMP expression was accompanied by significant increases in STAT-1 and JAK-1 mRNA and protein levels in the same brain samples. The present findings indicate that two lentiviru...

Lukasiak, J & Burnett, IS 2000, 'Exploiting simultaneously masked linear prediction in a WI speech coder', 2000 IEEE Workshop on Speech Coding. Proceedings. Meeting the Challenges of the New Millennium (Cat. No.00EX421), pp. 11-13.
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Lukasiak, J & Burnett, IS 2000, 'Exploring the characteristics of analytic decomposition of speech signals', 2000 IEEE Workshop on Speech Coding. Proceedings. Meeting the Challenges of the New Millennium (Cat. No.00EX421), pp. 59-61.
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Lukasiak, J, Burnett, IS, Chicharo, JF & Thomson, MM 2000, 'Linear prediction incorporating simultaneous masking', 2000 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.00CH37100), vol. 3, pp. 1471-1474.
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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.

Parry, JJ, Burnett, IS & Chicharo, JF 2000, 'Language-specific phonetic structure and the quantisation of the spectral envelope of speech', Speech Communication, vol. 32, no. 4, pp. 229-250.
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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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Popescu, DC & Bone, D 2000, 'Combinatorial approach to representing subsets of coefficients for signal compression schemes', Electronics Letters, vol. 36, no. 8, pp. 760-760.
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Power, C, Gladden, JGB, Halliday, W, Del Bigio, MR, Nath, A, Ni, W, Major, EO, Blanchard, J & Mowat, M 2000, 'AIDS- and non–AIDS-related PML association with distinct p53 polymorphism', Neurology, vol. 54, no. 3, pp. 743-743.
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A population-based analysis of progressive multifocal leukoencephalopathy (PML) showed PML frequencies of 5.1% among patients with AIDS and 0.07% among patients with hematologic malignancies, but similar clinical features of PML in both groups. Sequencing of the p53 gene, exon 4, showed heterozygosity (Arg-Pro) at codon 72 in five of six PML patients. These findings indicate that frequencies of non-AIDS- and AIDS-related PML differ markedly but p53 polymorphisms may influence the occurrence of PML in both groups.

Ritz, CH, Burnett, IS & Lukasiak, J 2000, 'Very low rate speech coding using temporal decomposition and waveform interpolation', 2000 IEEE Workshop on Speech Coding. Proceedings. Meeting the Challenges of the New Millennium (Cat. No.00EX421), pp. 29-31.
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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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Tuan, HD & Hosoe, S 2000, 'Multivariable circle criteria for multiparameter singularly perturbed systems', IEEE Transactions on Automatic Control, vol. 45, no. 4, pp. 720-725.
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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.

Tuan, HD, Apkarian, P, Hosoe, S & Tuy, H 2000, 'D.C. optimization approach to robust control: Feasibility problems', International Journal of Control, vol. 73, no. 2, pp. 89-104.
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Tuan, HD, Hosoe, S & Tuy, H 2000, 'DC optimization approach to robust controls: the optimal scaling value problem', IEEE Transactions on Automatic Control, vol. 45, no. 10, pp. 1903-1909.
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Tuan, HD, Yamada, Y & Hara, S 2000, 'Remarks on a global optimization algorithm for H/sub ∞/ control [and reply]', IEEE Transactions on Automatic Control, vol. 45, no. 10, pp. 1925-1928.
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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.

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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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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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

Apkarian, P, Tuan, HD & Bernussou, J 1970, 'Analysis, eigenstructure assignment and H2 multi-channel synthesis with enhanced LMI characterizations', Proceedings of the IEEE Conference on Decision and Control, 39th IEEE Conference on Decision and Control, IEEE, SYDNEY, AUSTRALIA, pp. 1489-1494.
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This paper describes a new framework for the analysis and synthesis of control systems, which constitutes a genuine continuous-time extension of results that are only available in discrete time. In contrast to earlier results the proposed methods involve a specific transformation on the Lyapunov variables and a reciprocal variant of the Projection Lemma, in addition to the classical linearizing transformations on the controller data. For a wide range of problems including robust analysis and synthesis, multi-channel H2 state- and output-feedback syntheses, the approach leads to potentially less conservative LMI characterizations. This comes from the fact that the technical restriction of using a single Lyapunov function is to some extent ruled out in this new approach. Moreover, the approach offers new potentials for problems that cannot be handled using earlier techniques. As an instance, the eigenstructure assignment problem blended with Lyapunov-type constraints is given a simple and tractable formulation.

Bone, DJ & Popescu, DC 1970, 'Multiresolution scanning imager with spatially uniform noise response based on a new class of Hadamard masks', SPIE Proceedings, Electronic Imaging, SPIE, SAN JOSE, CA, pp. 437-450.
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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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Chang, CF, Ghose, A, Lipman, J & Harvey, P 1970, 'Gongeroos’99', ROBOCUP-99: ROBOT SOCCER WORLD CUP III, 3rd Robot World Cup Soccer Games and Conference, Springer Berlin Heidelberg, STOCKHOLM, SWEDEN, pp. 572-575.
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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.

Cucchiara, R, Piccardi, M & Prati, A 1970, 'Focus based Feature Extraction for Pallets Recognition', Procedings of the British Machine Vision Conference 2000, British Machine Vision Conference 2000, British Machine Vision Association.
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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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Gu, L, Bone, D & Reynolds, G 1970, 'Replay Detection in Sports Video Sequences', Springer Vienna, pp. 3-12.
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Liu, PT & Zhu, JG 1970, 'Performance simulation of a linear variable reluctance permanent magnet motor with current control', Proceedings IPEMC 2000. Third International Power Electronics and Motion Control Conference (IEEE Cat. No.00EX435), 3rd International Conference on Power Electronics and Motion Control, Int. Acad. Publishers, China, pp. 602-0.
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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.

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.

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.

Nguyen, QH, Ha, QP, Rye, DC & Durrant-Whyte, HF 1970, 'Force/position tracking for electrohydraulic systems of a robotic excavator', Proceedings of the 39th IEEE Conference on Decision and Control (Cat. No.00CH37187), 39th IEEE Conference on Decision and Control, IEEE, pp. 5224-5229.
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This paper presents the sliding mode axis control of the electrohydraulic servo systems of a robotic excavator. The dynamic systems are described by a comprehensive model that accounts for nonlinearities and friction effects of asymmetric hydraulic cylinders. A sliding mode controller is developed for the electrohydraulic actuator of each working axis to provide stable force tracking. With a proper choice of the reference force, the control law can also allow tracking of a desired piston displacement trajectory. Numerical simulation demonstrates the validity of the proposed technique. Experimental results show good performance and strong robustness in both force and position following.

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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Tuan, HD, Apkarian, P & Nguyen, TQ 1970, 'Robust and reduced-order filtering: new characterizations a methods', Proceedings of the American Control Conference, 2000 American Control Conference (ACC 2000), IEEE, CHICAGO, IL, pp. 1327-1331.
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Several challenging problems of robust filtering are addressed in this paper. First of all, for robust filtering problems, we exploit a new LMI (Linear Matrix Inequality) characterization of minimum variance or H2 performance, and demonstrate that it allows the use of parameter-dependent Lyapunov functions while preserving tractability of the problem. The resulting conditions are less conservative than earlier techniques which are restricted to a fixed, that is not depending on parameters, Lyapunov function. The rest of the paper is focusing on the reduced-order filter problems. New LMI-based nonconvex optimization formulations are introduced for the existence of reduced-order filters. Then, several efficient optimization algorithms of local and global optimization are proposed. Nontrivial and less conservative relaxation techniques are presented as well. The viability and efficiency of the proposed tools are confirmed through computational experiments and also comparisons with earlier methods.

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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Xiaomei Yu, Hoang, DB & Feng, DD 1970, 'Weight-based fair intelligent bandwidth allocation for rate adaptive video traffic', Proceedings IEEE International Conference on Networks 2000 (ICON 2000). Networking Trends and Challenges in the New Millennium, IEEE ICON International Conference on Networks, IEEE Comput. Soc, p. 486.
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In this paper, we present a weight-based network bandwidth sharing algorithm, fair intelligent bandwidth allocation (FIBA) for transporting rate adaptive video traffic using feedback, and report on its performance. Through simulations the following results are obtained. The algorithm is capable of allocating bandwidth fairly for the MCR plus weighted allocation fairness criteria and MCR plus allocation proportional to PCR fairness criteria, among competitive, rate-adaptive video sources. It is able to reallocate smoothly when there are renegotiations of the minimum guaranteed cell rate, weight, or peak cell rate by some connections, or when a new connection is admitted, or when a connection is throttled somewhere earlier along the connection path. The algorithm prevents congestion, especially during the initial periods when buffer queues can build up significantly. © 2000 IEEE.

Yunxin Li & Xiaojing Huang 1970, 'The generation of independent Rayleigh faders', 2000 IEEE International Conference on Communications. ICC 2000. Global Convergence Through Communications. Conference Record, IEEE International Conference on Communications, IEEE, New Orleans, USA, pp. 41-45.
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The simulation of wireless communication channels often requires the generation of multiple complex waveforms satisfying the following conditions. 1) The real and imaginary parts are independent zero-mean random Gaussian processes with identical auto-correlation functions. 2) The complex waveforms are independent so that the cross-correlation function between any two waveforms is zero. In this paper, we first analyze previously proposed methods based on Jakes fading model to demonstrate that the above two conditions have not been satisfied. We then propose a novel method for the generation of multiple Rayleigh faders, which uses improved arrival angle patterns and incident wave phases. The auto-correlation and cross-correlation functions are derived to prove theoretically that the above two conditions are satisfied. Finally the statistical properties are verified by numerical results.

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.

Perry, SW DSTO Aeronautical and Maritime Research Laboratory, Department of Defence, Commonwealth of Australia 2000, Applications of Image Processing to Mine Warfare Sonar, no. DSTO-GD-0237, Sydney, Australia.
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Information from various mine warfare sonar systems is often presented to the operator in a visual form. To obtain the optimum performance of these systems, it is desirable to apply intelligent processing techniques to the corresponding imagery. This report examines image processing techniques which may have the potential to improve either system or operator performance. The types of mine warfare sonar imagery examined in this report are sector-scan, side-scan, and the AMI project imagery. For each of these three types of imagery/applicable image processing concepts and techniques are examined with reference to techniques recorded in the literature.