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ASME 2000 International Mechanical engineering Congress and Exposition, IMECE 2000

作者： Kazinczi, R. Mollinger, J.R. Bossche, A. Delft University of Technology DIMES Information Technology and Systems Fac. Electrical Engineering Dep. Electronic Instrumentation Lab Mekelweg 4 Delft2628 CD Netherlands

ISBN: (纸本)9780791819005

Silicon carbide (SiC) is a promising candidate to replace conventional silicon based electronics and micro electromechanical devices in various applications. The present study characterizes material properties of SiC thin films and addresses reliability issues focused on down-scaled resonant mode future devices. The Young's modulus was calculated from resonant measurements on SiC cantilever beams. The long-term stability of the resonator was studied in various environments. Thin cantilevers operating in air and in humid air exhibit stiffening effect due to surface oxidation. Mechanical shocks generate cracks in the surface oxide layer which results in drop of the resonance frequency. This unstable behaviour leads to failure of the resonant mode devices. Non-oxidising media, such as nitrogen and argon enhances the stability, which offers convenient packaging solutions. Copyright © 2000 by ASME

关键词： Silicon carbide

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Fuzzy rule-based optimization in nonlinear predictive control

Fuzzy rule-based optimization in nonlinear predictive contro...

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1999 European Control Conference, ECC 1999

作者： Setnes, M. Sousa, J.M. Control Laboratory Delft University of Technology Faculty of Information Technology and Systems P.O. Box 5031 Delft2600 GA Netherlands Technical University of Lisbon IST Dep. of Mechanical Engineering Av. Rovisco Pais 1 Lisboa1096 Portugal

ISBN: (纸本)9783952417355

The application of predictive control to nonlinear systems results in a non-convex optimization problem for computing the optimal control actions. The optimization problem can be addressed by discrete search techniques such as the branch-and-bound method, which has been successfully applied to nonlinear predictive control. Such a discrete approach introduces a tradeoff between computation time and performance. Previously, a solution was proposed that uses adaptive decision alternatives as control actions. This paper proposes the use of fuzzy rules to adapt the decision alternatives (possible control actions), resulting in easier tuning and a smoother behavior of the controller. Control of a HVAC system is considered, and the results are compared with those obtained with similar control schemes. © 1999 EUCA.

关键词： Branch and bound method

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A Use of Mean Field Decomposition in MRF-Based Unsupervised Textured Image Segmentation

A Use of Mean Field Decomposition in MRF-Based Unsupervised ...

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4th International Conference on computer Science and Informatics, JCIS 1998, 1st International Workshop on High Performance, 1st International Workshop on computer Vision, Pattern Recognition and Image Processing Volume 4

作者： Noda, Hideki Shirazi, Mehdi N. Kawaguchi, Eiji Kyushu Institute of Technology Dep. of Electrical Engineering 1-1 Sensui-cho Tobata-ku Kitakyushu 804-8550 Japan Osaka Institute of Technology Dep. of Information Processing 1-79-1 Kitayama Hirakata-shi 573-01 Japan

The use of mean field decomposition in Markov random field (MRF) based unsupervised textured image segmentation was discussed. The method was based on the expectation and maximization (EM) method where a decomposed posteriori probability was used. A posteriori probability of the whole region image was decomposed into the product of local a posteriori probabilities (LAP) for all pixels. It was found that the use of LAP was essential to perform better image segmentation.

关键词： Image segmentation

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Contributory presentations/posters

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Journal of Biosciences 1999年第1期24卷 33-198页

作者： N. Manoj V. R. Srinivas A. Surolia M. Vijayan K. Suguna R. Ravishankar R. Schwarzenbacher K. Zeth Diederichs G. M. Kostner A. Gries P. Laggner R. Prassl Madhusudan Pearl Akamine Nguyen-huu Xuong Susan S. Taylor M. Bidva Sagar K. Saikrishnan S. Roy K. Purnapatre P. Handa U. Varshney B. K. Biswal N. Sukumar J. K. Mohana Rao A. Johnson Vasantha Pattabhi S. Sri Krishna Mira Sastri H. S. Savithri M. R. N. Murthy Bindu Pillai Kannan M. V. Hosur Mukesh Kumar Swati Patwardhan K. K. Kannan B. Padmanabhaa S. Sasaki-Sugio M. Nukaga T. Matsuzaki S. Karthikevan S. Sharma A. K. Sharma M. Paramasivam P. Kumar J. A. Khan S. Yadav A. Srinivasan T. P. Singh S. Gourinath Neelima Alam A. Srintvasan Vikas Chandra Punit Kaur Ch. Betzel S. Ghosh A. K. Bera S. Bhattacharya S. Chakraborty A. K. Pal B. P. Mukhopadhyay I. Dey U. Haldar Asok Baneriee Jozef Sevcik Adriana Solovicova K. Sekar M. Sundaralingam N. Genov Dong-cai Liang Tao Jiang Ji-ping Zhang Wen-rui Chang Wolfgang Jahnke Marcel Blommers S. C. Panchal R. V. Hosur Bindu Pillay Puniti Mathur S. Srivatsun Ratan Mani Joshi N. R. Jaganathan V. S. Chauhan H. S. Atreya S. C. Sahu K. V. R. Chary Girjesh Govil Elisabeth Adjadj Éric Quinjou Nadia Izadi-Pruneyre Yves Blouquit Joël Mispelter Bernadette Heyd Guilhem Lerat Philippe Milnard Michel Desmadreil Y. Lin B. D. Nageswara Rao Vidva Raghunathan Mei H. Chau Prashant Pesais Sudha Srivastava Evans Coutinho Anil Saran Leizl F. Sapico Jayson Gesme Herbert Lijima Raymond Paxton Thamarapu Srikrishnan C. R. Grace G. Nagenagowda A. M. Lynn Sudha M. Cowsik Sarata C. Sahu S. Chauhan A. Bhattacharya G. Govil Anil Kumar Maurizio Pellecchia Erik R. P. Zuiderweg Keiichi Kawano Tomoyasu Aizawa Naoki Fujitani Yoichi Hayakawa Atsushi Ohnishi Tadayasu Ohkubo Yasuhiro Kumaki Kunio Hikichi Katsutoshi Nitta V. Rani Parvathy R. M. Kini Takumi Koshiba Yoshihiro Kobashigawa Min Yao Makoto Demura Astushi Nakagawa Isao Tanaka Kunihiro Kuwajima Jens Linge Seán O. Donoghue Michael Nilges G. Chakshusmathi Girish S. Ratnaparkhi P. K. Madhu R. Varadarajan C. Tetreau Molecular Biophysics Unit Indian Institute of Science Bangalore India Austrian Academy of Sciences Institute of Biophysics and X-ray Structure Research Graz Austria Faculty of Biology University of Konstanz Germany Institute of Medical Biochemistry University of Graz Austria Howard Huges Medical Institute Department of Chemistry & Biochemistry University of California La Jolla USA Department of Chemistry & Biochemistry University of California San Diego La Jolla USA Molecular Biophysics Unit India Department of Microbiology &Cell Biology Indian Institute of Science Bangalore India Macromolecular Structure Laboratory NCI - Frederick Cancer Research and Development Center ABL - Basic Research Program Frederick USA Department of Crystallography and Biophysics University of Madras Chennai Biochemistry Department Indian Institute of Science Bangalore India Condensed Matter Physics Division B.A.R.C. Trombay Mumbai Condensed Matter Physics Division Bhabha Atomic Research Centre Trombay Mumbai IMCB The University of Tokyo Tokyo Japan Mitsubishi Chemical Corporation Yokohama Research Center Yokohama Japan Faculty of Pharmaceutical Sciences Chiba University Chiba Japan Department of Biophysics All India Institute of Medical Sciences New Delhi India Department of Biophysics All India Institute of Medical sciences New Delhi India Institüt Physiologische Chemie Hamburg Germany Biophysics Department Bose Institute Calcutta India Slovak Academy of Sciences Institute of Molecular Biology Bratislava Slovakia Indian Institute of Science Bioinformatics Centre Bangalore Departments of Chemistry and Biochemistry Biological Macromolecular Structure Center USA Bulgarian Academy of Sciences Institute of Organic Chemistry Sofia Bulgaria Chinese Academy of Sciences Institute of Biophysics Beijing China Novartis Pharma AG Preclinical Research Basel Switzerland Department of Chemical Sciences Tata Institute of Fundamental Research Mumbai India Solid State Physics Div

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A Sign Language Recognition System Using Hidden Markov Model and Context Sensitive Search 96

A Sign Language Recognition System Using Hidden Markov Model...

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1996 ACM Symposium on Virtual Reality Software and technology, VRST 1996

作者： Liang, Rung-Huei Ouhyoung, Ming Communication and Multimedia Lab. Dep. of Computer Science and Information Engineering National Taiwan University Taipei Taiwan

ISBN: (纸本)9780897918251

Hand gesture is one of the most natural and expressive ways for the hearing impaired. However, because of the complexity of dynamic gestures, most researches are focused either on static gestures, postures, or a small set of dynamic gestures. As real-time recognition of a large set of dynamic gestures is considered, some efficient algorithms and models are needed. To solve this problem in Taiwanese Sign Language, a statistics based context sensitive model is presented and both gestures and postures can be successfully recognized. A gesture is decomposed as a sequence of postures and the postures can be quickly recognized using hidden Markov model. With the probability resulted from hidden Markov model and the probability of each gesture in a lexicon, a gesture can be easily recognized in a linguistic way in real-time. © 2000 Association for Computing Machinery. All rights reserved.

关键词： Virtual reality

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An MRF model-based method for unsupervised textured image segmentation

An MRF model-based method for unsupervised textured image se...

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13th International Conference on Pattern Recognition, ICPR 1996

作者： Noda, Hideki Shirazi, Mehdi N. Kawaguchi, Eiji Kyushu Institute of Technology Dep. of Electrical Electronic and Computer Engineering 1-1 Sensui-cho Tobata-ku Kitakyushu 804 Japan Kyoto University Dep. of Electrical Engineering Yoshida-Honmarzhi Kyoto 606 Japan

ISBN: (纸本)081867282X

This paper proposes a Markov random field (MRF) model-based method for unsupervised segmentation of images consisting of multiple textures. This method uses a hierarchical MRF with two layers, the first layer representing an unobservable region image and the second layer representing multiple textures which cover each region. This method is an iterative method based on the framework of the expectation and maximization (EM) method. We make use of an approximation for the Baum function in the expectation step. This reduces the parameter estimation to the maximum likelihood (ML) estimation given the current estimate of the region image. An estimation of the region image (image segmentation) is carried out by a deterministic relaxation method proposed by us. © 1996 IEEE.

关键词： Image segmentation

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An Improvisational Accompaniment System Observing Performer's Musical Gesture 21

An Improvisational Accompaniment System Observing Performer'...

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21st International computer Music Conference, ICMC 1995

作者： Aono, Yushi Katayose, Haruhiro Inokuchi, Seiji Osaka University Dep. of System Engineering Japan Laboratories of Image Information Science and Technology

In improvisational music, human accompanists understand patterns from the features of a soloist's playing, and use them effectively in many situations of real time performance. The authors have originated a computer accompaniment system with this feature of human accompanists. The system can draw out patterns from a soloist's musical gestures (combination of chord, rhythm, phrase and structural contour), and generate real time accompaniment using and reconstructing memorized patterns. © 1995 International computer Music Conference, ICMC Proceedings. All rights reserved.

关键词： Music

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New project to support scientific collaboration electronically

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Eos, Transactions American Geophysical Union 1994年第26期75卷 289-298页

作者： Clauer, C.R. Rasmussen, C.E. Niciejewski, R.J. Killeen, T.L. Kelly, J.D. Zambre, Y. Rosenberg, T.J. Stauning, P. Friis‐Christensen, E. Mende, S.B. Weymouth, T.E. Prakash, A. McDaniel, S.E. Olson, G.M. Finholt, T.A. Atkins, D.E. University of Michigan Space Physics Research Laboratory Ann Arbor Michigan 48109 United States SRI International Geoscience and Engineering Center Menlo Park California 94025 333 Ravenswood Ave United States University of Maryland Institute for Physical Science and Technology College Park Maryland 20742 United States Danish Meteorological Institute Solar Terrestrial Physics Division Copenhagen Denmark Lockheed Palo Alto Research Laboratory Palo Alto California 94304 3251 Hanover St United States University of Michigan Dep. of Electrical Engineering and Computer Science Ann Arbor Michigan 48109 United States University of Michigan Cognitive Science and Machine Intelligence Laboratory Ann Arbor Michigan 48109 701 Tappan United States University of Michigan School of Information and Library Studies Ann Arbor Michigan 48109 304 W. Engineering United States

A new multidisciplinary effort is linking research in the upper atmospheric and space, computer, and behavioral sciences to develop a prototype electronic environment for conducting team science worldwide. A real‐world electronic collaboration testbed has been established to support scientific work centered around the experimental operations being conducted with instruments from the Sondrestrom Upper Atmospheric Research Facility in Kangerlussuaq, Greenland. Such group computing environments will become an important component of the National information Infrastructure initiative, which is envisioned as the high‐performance communications infrastructure to support national scientific research. ©1994. American Geophysical Union. All Rights Reserved.

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Stabilizers enhancing the frequency regulation action of HVDC links supplying weak AC systems

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European Transactions on Electrical Power 1993年第3期3卷 201-212页

作者： Maris, T.I. Lygdis, A.D. Vovos, N.A. Giannakopoulos, G.B. Theodoros I. Maris (1961) received the Diploma in Electrical Engineering from the University of Patras/Greece in 1984. In 1985 he joined the Power Systems Laboratory at the Electrical Engineering Department of the University of Patras as research assistant where he is currently working for his Ph.D. degree. His area of interest is HVDC transmission. (University of Patras Dep. of Electrical Engineering Power Systems Laboratory GR-26 500 Rion. Patras/Greece T +3061/997350 Fax +3061/997362) Athanassios D. Lygdis (1954) received the Diploma in Electrical Engineering from the University of Patras/Greece in 1979. From 1979 until 1982 he worked at the Nuclear Technology Laboratory of the University of Patras as research assistant. In 1983 he joined the Power Systems Laboratory at the Electrical Engineering Department of the University of Patras as scientific collaborator. He is now working for his Ph.D. degree in this Department. His main field of interest is power transmission by HVDC systems. (University of Patras Dep. of Electrical Engineering Power Systems Labora- tory GR-26 500 Rion Patras/Greece T + 3061/997350 Fax + 3061/997361) Nickolas A. Vovos (1951) received the Diploma degree from the University of Patras/Greece the M.Sc. degree from the University of Manchester/England Institute of Science and Technology. and the Ph.D. degree from the University of Patras in 1974 1975 1978 respectively all in Electrical Engineering. In 1976 he joined the Power Systems Laboratory at the Electrical Engineering Department of the University of Patras where he is now Associate Professor. His main fields of interest are the modeiling and the transient stability study of integrated AC/DC systems. He is a member of the IEEE Power Engineering Society and CIGRE and a registered professional Engineer and member of the Technical Chamber of Greece (University of Patras Dep. of Electrical Engineering Power Systems laboratory GR-26500 Rion Patras/Greece. T +3061/997369 Fax +3061/997362) Gabriel B. Giannakopoulos (1

Power System Stabilizers (PSS) superimposed to the basic control system of an HVDC link supplying a weak AC system, in order to enhance its frequency regulation action, are proposed. To decrease the AC voltage sensitivity at the inverter side, the basic control system of the HVDC link is proposed to operate with the rectifier under Minimum Ignition Angle (MIA) control and the inverter under Constant Current (CC) control. Inputs to the PSS are the frequency and the AC voltage deviations at the inverter side and their constant parameters are calculated using modal control technique. Detailed simulation results for a practical integrated AC/DC system are presented to evaluate the performance of the proposed control scheme. Copyright © 1993 John Wiley & Sons, Ltd.

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Optical tracking System for automatic guided vehicles using cellular neural networks 2

Optical tracking System for automatic guided vehicles using ...

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2nd International Workshop on Cellular Neural Networks and their Applications, CNNA 1992

作者： Eröss, Gy. Boros, T. Kiss, Á. Radványi, A. Roska, T. Bitó, J. Vass, J. Tungsram TH Co. Ltd Centre of Robotics and Automation Václ ut 77 BudapestH-1340 Hungary Dual and Neural Computing Systems Laboratory Computer and Automation Institute of the Hungarian Academy of Sciences P.O.B.63 BudapestH-1502 Hungary Dep. of Information Technology Faculty of Engineering University Veszprém Egyetem u. 10 VeszprémH-8201 Hungary

ISBN: (纸本)0780308751

computer Integrated Manufacturing (CIM) Systems having determining role in the modern industry. These systems contain essentially two different equipments for transporting materials between workstations: - conveyors can be used if the path of transportation is fixed and known in advance, or - if the path of the transportation may change or there are various tasks to be solved along the path, the use of Automatic Guided Vehicles (AGV) is strongly recommended. The path control of an AGV in CIM systems is generally solved either by following an inductive wire or by determining its position and orientation from signals provided by transmitters mounted at some characteristic points of the workshop. Both of these basic methods have their advantages and drawbacks. © 1992 IEEE.

关键词： Automatic guided vehicles

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