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British Telecom technology journal 1998年第3期16卷 134-144页

作者： Tsui, K.C. Azvine, B. Djian, D. Voudouris, C. Xu, L.Q. Hong Kong Polytechnic University Hong Kong University of Essex King's College London United Kingdom BT Laboratories United Kingdom ATM Traffic Management United Kingdom Manchester University United Kingdom Dynamics and Control Research Group Engineering Department Manchester University United Kingdom Contr. and Instrum. Research Group Staffordshire University United Kingdom Intelligent Systems Research Unit BT Laboratories United Kingdom Dept. of Engineering Mathematics Bristol University United Kingdom Europ. Netwk. Excellence U. Institut d'Informatique d'Entreprise France Oxford University Robotics Research Group United Kingdom University of Nice France Ecole des Mines de Paris France Natl. Technical University of Athens Greece University of Essex United Kingdom Department of Computer Science University of Essex United Kingdom Intelligent Systems Research Group BT Laboratories United Kingdom Southeast University Nanjing China Institute of Acoustics Chinese Academy of Sciences Beijing China University of East Anglia United Kingdom University of Sussex King's College London United Kingdom University of Abertay Dundee United Kingdom

Research in human/computer interaction has mainly focused on natural language, text, speech and vision primarily in isolation. Recently there have been a number of research projects that have concentrated on the integration of such modalities using intelligent reasoners. The rationale is that many inherent ambiguities in single modes of communication can be resolved if extra information is available. This paper describes an intelligent multi-modal system called the Smart Work Manager. The main characteristics of the Smart Work Manager are that it can process speech, text, face images, gaze information and simulated gestures rising the mouse as input modalities, and its output is in the form of speech, text or graphics. The main components of the system are the reasoner, a speech system, a vision system, an integration platform and the application interface. The overall architecture of the system will be described together with the integration platform and the components of the system which include a non-intrusive neural network based gaze-tracking system. The paper concludes with a discussion on the applicability of such systems to intelligent human/computer interaction and lessons learnt in terms of reliability and efficiency.

关键词： Learning systems

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Improved textured images segmentation using an energy functional 9th

Improved textured images segmentation using an energy functi...

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9th International Conference on Image Analysis and Processing, ICIAP 1997

作者： Grau, Antoni Saludes, Jordi Dept. of Automatic Control and Computer Engineering Polytechnic University of Catalonia UPC Barcelona Catalonia Spain Dept. of Applied Mathematics II Polytechnic University of Catalonia UPC Barcelona Catalonia Spain

ISBN: (纸本)3540635076

In this paper we present a new classification and image segmentation system based on the addition of a variational method to a classic clustering algorithm. This system constitutes an improvement respect traditional segmentation methods. Often due to the nature of the texture features obtained from an image, the segmentation results are not quite precise. If this happens, using the energy functional and its minimization can improve the segmentation. This functional takes into account the information in the feature space and the information in the 2D image domain. The extracted characteristics from the image are texture features that have been defined in order to obtain an admissible trade-off between their discriminant capacity and their effectiveness to be implemented in a vision board to operate at real time. We show some results to appreciate this improvement in the segmentation using the energy functional. © Springer-Verlag Berlin Heidelberg 1997.

关键词： Clustering algorithms

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Representation of music in a learning classifier system 10th

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10th International Symposium on Methodologies for Intelligent Systems, ISMIS 1997

作者： Federman, Francine Dorchak, Susan Fife Computer Science/ Management Engineering Dept. C.W. Post Campus of Long Island University Northern Blvd. BrookvilleNY11548 United States

ISBN: (纸本)3540636145

NEXTPITCH, a learning classifier system using genetic algorithms, inductively learns to predict the next note in a nursery melody. This paper presents an analysis of different representations of specific features of Western tonal music. The rationale for the specific note representations merges ideas from learning classifier systems and genetic algorithms with concepts espoused by the music cognition community. Our results are correlated by analyses of variance statistical routines. © Springer-Verlag Berlin Heidelberg 1997.

关键词： Genetic algorithms

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Grey Box Fault Detection in Heat Exchanger Networks

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IFAC Proceedings Volumes 1997年第18期30卷 191-196页

作者： E. Weyer K.M. Hangos Dept. of Chemical Engineering University of Queensland Brisbane QLD 4072 Australia Systems and Control Research Laboratory Computer and Automation Institute HAS H-1518 Budapest PO Box 63 Hungary

A grey box model-based method for fault diagnosis is proposed in this paper which is based on a first principle model of the process unit: a heat exchanger, and on a grey box model of the fault: the deterioration of the heat transfer surface by aging. Under normal operating conditions the heat transfer coefficient is constant or slowly decreasing due to a layer of settled material building up on the heat transfer surface, and we propose to use a recursive least squares estimator with forgetting factor to track the heat transfer coefficients during these stages. In old heat exchangers, big chunks of the settled material can break away from the surface causing the heat transfer coefficients to rise sharply. This fault is detected via detection of abrupt positive jump in the estimated heat transfer coefficients using a Hinkley detector

关键词： Fault diagnosis grey box modelling fault modelling identification

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A PLZT-based dynamic diffractive optical element for high speed, random-access beam steering

A PLZT-based dynamic diffractive optical element for high sp...

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Conference on Optical Scanning Systems - Design and Applications

作者： Thomas, JA Lasher, M Fainman, Y Soltan, P Dept. of Electrical and Computer Engineering MC 0407 University of California at San Diego San Diego CA 92093-5003 9500 Gilman Drive United States Naval Command Control and Ocean Surveillance Center Research Development Test and Evaluation Division Advanced Technology Branch San Diego CA 92152-5732 53490 Dow Street United States

ISBN: (纸本)0819425532

A novel type of electro-optic diffractive element is presented which can satisfy the requirements for a high space-time bandwidth deflector while providing for two-dimensional random access beam steering control. The basic device consists of a multichannel array of phase modulators fabricated using Lanthanum-modified Lead Zirconate Titanate (PLZT) operating as a programmable diffractive optical element. Two-dimensional deflection control can be readily obtained by crossing two one-dimensional arrays. This device is useful for wavelengths in the Visible to Mid-IR range and is based on PLZT ceramic materials which can be readily mass-produced. It possesses the versatility and multifunctionality of liquid crystal based optical phased array systems while allowing for very fast switching speeds with good thermal stability. We present a brief comparison of this novel deflector with other scanning technologies and outline the benefits and trade-offs of the PLZT-based device. Experiments on 16- and 32-channel arrays with fullwave voltages less than 400 volts demonstrate continuous lateral beam steering control of a HeNe laser beam. We also demonstrate full deflection control with a minimum number of control lines using a modified deflector arrangement. And we present measurements showing sub-microsecond switching speeds from such PLZT-based phase modulators. Mature versions of this type of scanner will find use in a wide variety of applications including 2-D and 3-D laser displays, laser communications, and LIDAR systems.

关键词： Light modulators

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Interlaced systems and recursive designs for global stabilization 4

Interlaced systems and recursive designs for global stabiliz...

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4th European control Conference, ECC 1997

作者： Sepulchre, R. Janković, M. Kokotović, P.V. Universite Catholique de Louvain Av. G. Lemaitre 4 Louvain-La-NeuveB1348 Belgium Ford Scientific Research Laboratories P.O. Box 2053 DearbornMI48121 United States Center for Control Engineering and Computation Dept. of Electrical and Computer Engineering University of California Santa BarbaraCA93106 United States

ISBN: (纸本)9783952426906

Interlaced systems constitute a class of systems only characterized by the zero entries of their matrix configuration and a local stabilizability condition. All these systems are globally stabilizable by a recursive design procedure which combines steps of backstepping and forwarding. When a nonlinear system misses this structural characterization, other types of conditions (sign, growth) are needed to ensure global stabilization.

关键词： Design

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Fault-Tolerant Model Based Predictive control with Application to Boiler Systems

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IFAC Proceedings Volumes 1997年第18期30卷 1231-1236页

作者： Won-Kee Son Oh-Kyu Kwon M.E. Lee Laboratory for Control and Instrumentation Systems School of Electrical and Computer Engineering Inha University Inchon 402-751 Koreo Tel: +82-32-860-7395 Fax: +82-32-863-5822 Dept. of Information and Communication Engineering Koreo Institute of Technology and Education Chonan Chungnam 333-860 Korea

This paper deals with the fault-tolerant control problem under nonlinear boiler systems with noise and disturbance. MCMBPC (Multivariable Constrained Model-Based Predictive controller) proposed by Wilkinson et al . is used and modified in this paper in order to be applied to nonlinear boiler systems. Fault-tolerant control scheme combining MCMBPC with a fault detection method based on the unknown input observer is proposed. The fault-tolerant controller proposed is shown, via simulation, to have acceptable tracking performance even under some faults of input valves in the boiler system.

关键词： Fault-tolerant fault detection model-based predictive control boiler systems

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The 10th Conference of the Entomological Society of Israel

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Phytoparasitica 1997年第2期25卷 143-169页

作者： Rachel Galun I. Ishaaya Sara Yablonski Zmira Mendelson Y. Mansour Svetlana Kontsedalov U. Pluschkell A. R. Horowitz G. Forer D. Ben-Yakir M. Chen M. Gokkes S. Eitan Z. Klein W. Kuzlitzky Z. Ben-David A. Lavi A. Freidberg Ester Hadar E. Shaaya M. Kostjukovsky Y. Carmi I. Binenboim U. Ravid A. Gamliel Miriam Austerweil Yehudit Riven B. Steiner V. Zilberg S. Ovadia S. Cohen Y. Yechezkely Y. Masika M. Lapidot Y. Antignus D. Hadar D. Nestel Phyllis G. Weintraub E. Zvieli B. Ganmor R. Regev Y. Arazi M. J. Berlinger Sara Lebiush-Mordechi Dvora Fridja V. Khasdan A. Rubin S. Navarro F. A. Mansour Z. Karchi J. Herschenhorn M. Edelstein F. Abo-Moch J. Meisner K. R. S. Ascher M. Klein M. Davidovich Immy Caspy E. Ben-Moshe Nitza Saphir Z. Madar A. Zahavi Z. Mendel G. Ofek Gili Huberman Y. Izhar M. Wysoki S. Reneh S. Gavish M. Coll I. Dory A. Kadmon E. Elhaik R. Rodman Yael Argov Y. Rossler E. Swirski S. Ben-Yehuda Fabienne Assael S. Zeidan A. Zehavi S. Gross Y. Dreishpon S. Steinberg M. Cohen D. Blumberg B. Schwartz I. Glazer Y. Rössler Y. Gazit N. Chejanovsky E. Gershburg D. Lehavi H. Rivkin O. Faktor Mira Toister-Achituv S. Faruchi Batya Kamensky A. Navon Sara Keren Shlomit Levski Y. Sachs Y. Nakache M. Lazare Yuval Gottlieb Einat Zchori-Fein D. Rosen E. Nevo Ali R. Harari Fabienne Assae Z. Mende Raisa Chyzik W. Kuslitzky K. Adar E. Dunkelblum S. Tarn Miriam Harel I. Yarom Y. Malihi Anna Svechkov N. Israely B. Yuval U. Kitron Y. Perry R. Kaspi Hadass Cohen Miriam Altstein Orna Ben-Aziz Irit Schafler I. Seltzer C. Gilon A. Rafaeli C. Gileadi Netta Dorchin Dept. of Parasitology The Hebrew University—Hadassah Medical School Jerusalem Israel Dept. of Entomology ARO The Volcani Center Bet Dagan Israel Cotton Production & Marketing Board Herzliyya Israel Dept. of Entomology ARO The Volcani Center Bet Dagan Extension Service Ministry of Agriculture Tel Aviv Plant Protection and Inspection Services Ministry of Agriculture Bet Dagan Extension Service Ministry of Agriculture Hadera Israel Dept. of Zoology Tel-Aviv University Tel Aviv Extension Service Ministry of Agriculture Rehovot Israel Dept. of Stored Products ARO The Volcani Center Bet Dagan Israel Dept. of Medicinal Plants and Spices ARO Newe Ya ’ar Research Center Ramat Yishay Israel Laboratory for Research on Pest Management Application ARO The Volcani Center Bet Dagan Carmel Winery Ltd. Rishon LeZiyyon The Israel Wine Institute Rehovot Dept. of Virology ARO The Volcani Center Bet Dagan Israel Klayman-Meteor PetahTiqwa Dept. of Entomology ARO Gilat Regional Experiment Station Inst. of Agricultural Engineering ARO The Volcani Center BetDagan Research and Development Sha’ar haNegev Enterprises Hof Ashqelon Israel Dept. of Entomology ARO Gilat Regional Experiment Station Israel Consulting Service for Biocontrol and Integrated Control Giv’at Shemuel Israel Newe Ya’ar Research Center ARO Ramat Yishay Israel Dept. of Plant Introduction ARO The Volcani Center Bet Dagan Israel Forests Department Keren Kayemet LeYisrael Eshta’ol Hevel Ma’on Dept. of Plant Protection Extension ServiceMinistry of Agriculture Tel Aviv Dept. of Entomology The Hebrew University of Jerusalem Faculty of Agricultural Food and Environmental Quality Sciences Rehovot Experiment Department Hevel Ma’on Isaac Federman Ltd. Tel Aviv Israel Eshel HaNassi High School M.P. Negev M.P. Negev Israel The Israel Cohen Institute for Biological Control Citrus Marketing Board of Israel Bet Dagan Israel Dept. of Plant Protection Extension Service Ministry of Agriculture Tel Aviv Forests

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A spectral approach to compute the mean performance measures of the queue with low-order BMAP input

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Journal of Applied Mathematics and Stochastic Analysis 1997年第4期16卷 349-360页

作者： Lee, Ho Woo Moon, Jong Min Park, Jong Keun Kim, Byung Kyu Sung Kyun Kwan University Dept. of Systems Management Engineering Su Won 440-746 South Korea SE Application Prog. Info Tech. Group Division LG CNS Good Morning Bldg. Seoul 150-712 Yeo Eui Do South Korea I/O System Team Computer System Department Computer and Software Research Laboratory Dae Jon 305-350 South Korea Itsweb CRM Team R and D Center 789-4 Young Bldg. Seoul 135-080 Yok Sam Dong Kang Nam South Korea

This paper targets engineers and practitioners who want a simple procedure to compute the mean performance measures of the Batch Markovian Arrival process (BMAP/G/1) queueing system when the parameter matrices order is very low. We develop a set of system equations and derive the vector generating function of the queue length. Starting from the generating function, we propose a spectral approach that can be understandable to those who have basic knowledge of M/G/1 queues and eigenvalue algebra. ©2003 by North Atlantic Science Publishing Company.

关键词： BMAP/G/1 Queue Spectral Approach

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Continuous relaxations for constrained maximum-entropy sampling 5th

Continuous relaxations for constrained maximum-entropy sampl...

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5th International Conference Integer Programming and Combinatorial Optimization, IPCO 1996

作者： Anstreicher, Kurt M. Fampa, Marcia Lee, Jon Williams, Joy Dept. of Management Sciences University of Iowa Iowa CityIA52242 United States Dept. of Systems Engineering and Computer Sciences COPPE Federal University of Rio de Janeiro CP 68511 Rio de JaneiroRJ21945 Brazil Dept. of Mathematics University of Kentucky LexingtonKY40506-0027 United States

ISBN: (纸本)3540613102

We consider a new nonlinear relaxation for the Constrained Maximum Entropy Sampling Problem — the problem of choosing the s × s principal submatrix with maximal determinant from a given n × n positive definite matrix, subject to linear constraints. We implement a branch-and-bound algorithm for the problem, using the new relaxation. The performance on test problems is far superior to a previous implementation using an eigenvalue-based relaxation. © Springer-Verlag Berlin Heidelberg 1996.

关键词： Eigenvalues and eigenfunctions

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