E-LETTER on Systems, Control, and Signal Processing ISSUE No. 51, Part 1 of 3; 12 June 1992 Editors: Bradley W. Dickinson bradley@princeton.edu or bradley@pucc.bitnet Eduardo D. Sontag sontag@hilbert.rutgers.edu or sontag@pisces.bitnet Welcome. We remind you that items for posting can be emailed to either of the editors. PLEASE SEND CONTRIBUTIONS, since the eletter can only be useful if everyone participates. A REQUEST: It would be useful if articles are already sent in the format that we use, starting with a "Contributed by:..." and a title centered in the next line. In addition, please provide a 60-character title for the Contents. Thanks! NOTE: if you are using an editor to read this mailing and if at any point you wish to skip to the next article, you can accomplish this by searching for the string: *.** Contents Changes to mailing list Personals: People on the move People going up Awards and Recognitions IEEE Control Systems Society News: Announcement: IEEE Transactions on Control Systems Technology Journals: TOC: Mathematics of Control, Signals, & Systems 5,No.3 (1992) Forthcoming papers, MCSS TOC: Circuits, Systems, and Signal Processing 11,3 (1992) TOC: SIAM Journal on Control and Optimization 30,4 (July 1992) TOC: SIAM Journal on Control and Optimization 30,5 (Sep 1992) TOC: volumes 168, 169, 170, 171, and 172 of LAA LAA: Special Issue, Workshop on Generalized Inverses New Journal: Stochastic Optimization and Design New journal: Asia-Pacific Engineering Journal-- EE ---> (End of Part 1) Conferences: Variable Structure and Lyapunov Control, 7-9 Sept 92, Sheffield Systems and Control: Themes for the 90's, 29-30 June 92, London 10th Int. Conf. on Analysis and Optimization of Systems IEEE 1992 Information Theory Wkshp. 21-26 June 92, Brazil Applied Probability, June 16-18 1993, Paris Large Scale Scientific Computation, 8-31-92, Bielefeld IEEE 1993 ICASSP, April 27-30, 1993, Minneapolis IEEE Fuzzy Systems, San Francisco, March 28 - April 1, 1993 New Books Published: The H-Infinity Control Problem: A State Space Approach Faculty Positions Available/Wanted: Positions Available ECE, NEWCASTLE Position Wanted Post-Doc Speech Research at Bellcore UPATE ON SCAD DATABASE Reports & Software available Nonlinear_System_Toolbox Available Control Information Database and Newsletters at Glasgow Preprints/Software available via anonymous ftp from Stanford Reports by Stephen Boyd et al. Misc: Gradute Students Wanted, video, Ankara, Turkey Proper symbols for emotions in email :-) *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by the Editors: Changes/Additions to mailing list. Changes and Updates: ------------------- ren@control.berkeley.edu (Wei Ren, Univ. of California, Berkeley) slock@eurecom.cica.fr (Dirk Slock, Institut EURECOM, Sophia Antipolis, France) gueguen@eurecom.cica.fr (Claude Gueguen, Inst. EURECOM, Sophia Antipolis, FR) yys9590@tesla.njit.edu (Yun-Qing Shi, New Jersey Inst. of Technology, Newark) meyer@tesla.njit.edu (Andrew U. Meyer, New Jersey Inst. of Tech., Newark) finn@estwk5.estec.esa.nl (Finn Ankersen, European Space Rsch & Tech. Center) cwang@mathp.usc.edu (Chunming Wang, Univ. of So. California) jim@oracorp.com (Jim Taylor, ORA Corp., Ithaca, NY) chan@altair.ee.mcgill.ca (Wai-Yip [Geoffrey] Chan, McGill Univ., Montreal) stefano@src.umd.edu (Giovanni Stefano, Univ. of Maryland, College Park) zoran@hilbert.coe.northeastern.edu (Zoran Zvonar, Northeastern Univ., Boston) kg@eng.cam.ac.uk (Keith Glover, Univ. of Cambridge, England) jmm@eng.cam.ac.uk (Jan Maciejowski, Univ. of Cambridge, England) mcs@eng.cam.ac.uk (Malcolm C. Smith, Univ. of Cambridge, England) escs@mathematik.uni-Bremen.de (Bengt Martensson, Institute for Dyn Sys, Bremen) rrb101@rsphy1.anu.edu.au (Robert Bitmead, Australian National Univ., Canberra) rortega@hds.univ-compiegne.fr (Romeo Ortega, CNRS, Compiegne, France) matthews@ece.nps.navy.mil (Michael Matthews, Naval P.G. School, Monterey,CA) matthews@mbari.org (Michael Matthews, Monterey Bay Aquarium Research Inst) dgm2r@pref.colorado.edu (David G. Meyer, Univ. of Colorado, Boulder) Birk@prosim.dnet.basf-ag.de (Joachim Birk, BASF, Ludwigshafen, Germany) r.f.curtain@math.rug.nl (Ruth Curtain, Univ. of Groningen, Netherlands) Additions: --------- delaleau@frese51.bitnet (Emmanuel Delaleau, ESE/CNRS, Gif-sur-Yvette) bartos@plbial11.bitnet (Zbigniew Bartosiewicz, Politechnika Bialostocka,Poland) geszymka@plkrcy11.bitnet (Henryk Gorecki,Automatics, Mining&Metallurgy, Krakow) geszymka@plkrcy11.bitnet (Maciej Szymkat,Automatics, Mining&Metallurgy, Krakow) Ralf@isr.verfahrenstechnik.uni-stuttgart.dbp.de (Ralf Rothfuss, Stuttgart) nikitin@mathematik.uni-kl.de (Sergey Nikitin, Univ. of Kaiserslautern, Germany) lamnabhi@frese51.bitnet (Francoise Lamnabhi-Lagarrigue,ESE/CNRS,Gif-sur-Yvette) quz@engr.ucf.edu (Zhihua Qu, Univ.of Central Florida, Orlando) adp101@rsphy1.anu.edu.au (Andrew Paice, Australian Nat'l. Univ., Canberra) baccelli@sophia.inria.fr (Francois Baccelli, INRIA, Sophia Antipolis) aggk@eecs.nwu.edu (Aggelos Katsaggelos, Northwestern Univ., Evanston, IL) carsten@sparky.eecs.umich.edu (Carsten Scherer,Univ. of Michigan, Ann Arbor) mxb11@po.cwru.edu (Marc Buchner, Case Western Reserve Univ.) sebek@cspgas11.bitnet (Michael Sebek, Info Th&Autom, Czech Acad Sci, Prague) flockerzi@vax.rz.uni-wuerzburg.dbp.de (Dietrich Flockerzi, Math, Wurzburg) knobloch@vax.rz.uni-wuerzburg.dbp.de (H.W. Knobloch, Math, Wurzburg) colonius@minsti03.mnwf.uni-augsburg.de (Fritz Colonius, Math, Augsburg) petros@control.csl.uiuc.edu (Petros Voulgaris, Univ. of Illinois) parask@theseas.ntua.gr (Paraskevas Paraskevopoulos, Natl Tech U., Athens) andrea@trovatore.ensmp.fr (Brigitte d'Andrea-Novel, E.des Mines,Fontainebleau) udal@sms.ccas.msk.su (Timur Alavidze, Computing Center, Russian Acad. Sci.) padmanab@ecs.umass.edu (Prasad Padmanabhan, Univ. of Massachussetts, Amherst) ahmed@ecs.umass.edu (Syed Khaleel Ahmed, Univ. of Massachussetts, Amherst) collier@heiipo5.bitnet (Rene Collier, IPO, Eindhoven, The Netherlands) elezhouh@nuscc.nus.sg (Zhou Hong, National Univ. of Singapore) chengr@spot.colorado.edu (Roger Cheng, Univ. of Colorado, Boulder) nam@src.umd.edu (Nam Phamdo, Univ. of Maryland, College Park) hideki@ics.iis.u-tokyo.ac.jp (Hideki Hashimoto, Univ. of Tokyo) martin@ics.iis.u-tokyo.ac.jp (Martin Buss, Univ. of Tokyo) kent@isi.com (Mark Kent, Integrated Systems, Inc., Santa Clara, CA) utsl@msr.epm.ornl.gov (Suzanne Lenhart, Univ of Tennessee, Knoxville) klonowsk@ac.dal.ca (Vladimir Klonowski, Dalhousie Univ., Halifax, Nova Scotia) phtwalt@indsvax1.indstate.edu (Walt Carnahan, Indiana State Univ.) dks@ai.mit.edu (Diana Smetters, MIT) silva@ps.ic.ac.uk (Geraldo Silva, Imperial College, London) tnc0766@tesla.njit.edu (Timothy Chang, New Jersey Inst. of Tech., Newark) dan@csearn.bitnet (Roman Rosipal) skundu@valhalla.cs.wright.edu (Shubhasish Kundu, Wright State Univ., Dayton, OH) wzhan@osiris.ucsd.edu (Wei Zhan, Univ. of California, San Diego) jeffl@syscon.sc.ee.unsw.oz.au (K.B. Lee, Univ. of New South Wales, Australia) yuda@linus.mitre.org (Yehuda Avniel, MITRE Corp.) umeca23@ps.ic.ac.uk (Julio Rocha, Imperial College, London) kostic@nucleus.att.com (Zoran Kostic, AT&T Bell Labs) gordana@goofy.att.com (Gordana Pavlovic, AT&T Bell Labs) verhaege@dutentb.et.tudelft.nl (Michel Verhaegen, Technical Univ. of Delft) cwon@seurat.helios.nd.edu (Chang-Hee Won, Univ. of Notre Dame) br652@cleveland.Freenet.Edu (Okky Hutapea, Baldwin-Wallace College, Berea, OH) delre@aut.ethz.ch (L. del Re, ETH Zurich, Switzerland) miscord@mullian.ee.mu.oz.au (Michael Scordilis, Univ. of Melbourne, Australia) ltong@ece.wvu.wvnet.edu (Lang Tong, West Virginia Univ., Morgantown) janka@grip.cis.upenn.edu (Jana Kosecka, Univ. of Pennsylvania) vasfi@trmbeam.bitnet (Vasfi Eldem) selbuz@trmbeam.bitnet (Hasan Selbuz) sxm4868@tesla.njit.edu (Sofia Mentzelopoulou, New Jersey Inst. of Tech., Newark) qix@roma.eng2.uconn.edu (Xiaofeng Qi, Univ. of Connecticut, Storrs) fashoro@vuse.vanderbilt.edu (Mobolaji Fashoro, Vanderbilt Univ., Nashville, TN) pac@bucsa.bu.edu (Paula Carey, Boston Univ.) james.r.fries@dartmouth.edu (James Fries, Dartmouth Univ., Hanover, NH) *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by the Editors -- PERSONALS ********** PEOPLE ON THE MOVE ************ (1) Starting May 15 Romeo ("Gypsy") Ortega has a new position at the CNRS in France. His new address: Universite de Technologie de Compiegne Department de Genie Informatique BP 649-60206, Compiegne FRANCE Tel: (33)-44-23-44-79 Fax: (33)-44-20-48-13 e-mail: rortega@hds.univ-compiegne.fr ********** PEOPLE GOING UP ************ Jim Taylor has left GE Corporate R & D to join the ORA Corporation (Odyssey Research Associates) of Ithaca NY, as Manager of Controls and Manufacturing. Initially, he will be leading the ORACorp DSSA (domain-specific software architectures) contract sponsored by DARPA to develop math formalisms, methods, and CAD tools for hierarchical intelligent control systems. In the longer term, his charter is to grow nonlinear controls and computer-aided control engineering (CACE) into a major thrust area for ORA, including both CACE tool development and research in manufacturing technology. In addition, he will be serving on the ORA Executive Committee ("Board of Directors"). Current address: Jim Taylor Manager, Controls and Manufacturing ORA Corporation 301A Dates Drive Ithaca NY 14850-1313 (607) 277-2020 FAX: (607) 277-3206 Jim@oracorp.com Tongwen Chen, who did his PhD thesis on sampled-data control systems under Bruce A. Francis at the University of Toronto, joined the faculty of the University of Calgary in October 1991. Current address: Dept of Electrical and Computer Engineering University of Calgary 2500 University Drive NW Calgary, Alberta CANADA T2N 1N4 Email: chent@enel.ucalgary.ca Phone: (403)220-8357 ********** AWARDS AND RECOGNITION ************ Professor Thomas Kailath, Hitachi America Professor of Engineering at Stanford University, received an honorary degree of Doctor of Science from the University of Strathclyde, Glasgow, Scotland. The degree was conferred at a special convocation on May 14, 1992, celebrating the centennial of Strathclyde's Department of Electrical Engineering. Prof. Kailath was also recently elected to the Third World Academy of Sciences, founded in 1983 with Professor Abdus Salam, 1979 Nobel Laureate in Physics, as the Founding President. Professor Roger W. Brockett, An Wang Professor of Electrical Engineering and Computer Science at Harvard University, was recently elected to membership in the National Academy of Engineering. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by Bruce H. Krogh (krogh@ece.cmu.edu) *** Preliminary Announcement *** IEEE Transactions on Control Systems Technology The Board of Governors of the IEEE Control Systems Society has submitted a proposal to the IEEE to initiate a new IEEE Transactions on Control Systems Technology. If approved, this new quarterly journal will be sent to the approximately 10,000 members of the IEEE Control Systems Society in 1993. Scope The IEEE Transactions on Control Systems Technology will publish papers on new developments in all areas of control systems technology, including, but not limited to, new sensor and actuator technologies, software and hardware for real-time computing and signal processing in control systems, tools for computer-aided design of control systems, new approaches to control system design and implementation, experimental results, distributed architectures, intelligent control, and novel applications of control theory. Survey articles, tutorials, and special issues on timely topics of general interest to control systems engineers will also be published. The Letters section will provide for the rapid publication of brief reports on new research results, technical developments, and comments on previous papers. Information for Authors This is a preliminary announcement for prospective authors of papers for the new IEEE Transactions on Control Systems Technology. The tentative first issue date is March 1993. If approved by the IEEE, manuscripts will be solicited beginning in April 1992. At that time complete instructions for submitting papers will be published in the Systems E-Letter. Questions regarding the Transactions can be sent to Bruce H. Krogh, Editor (krogh@ece.cmu.edu). *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: the Editors Contents, Mathematics of Control, Signals, and Systems Vol. 5, No. 3 (1992) Nonlinear $H^\infty$ Control Theory for Stable Plants J. A. Ball and J. W. Helton 233-261 Stationary Discrete-Time Covariance Factorization Using Newton-Raphson Iteration L. B. White and B. D. O. Anderson 263-279 $L^1$ Sensitivity Minimization for Plants with Commensurate Delays M. A. Dahleh and Y. Ohta 281-293 Global Asymptotic Stabilization for Controllable Systems Without Drift J.-M. Coron 295-312 Toward Time Varying Balanced Realizations via Riccati Equations J. Imae, J. E. Perkins, and J. B. Moore 313-326 Time-Scale Decomposition of the Reachable Set of Constrained Linear Systems A. L. Dontchev 327-340 *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: the Editors Forthcoming papers, Mathematics of Control, Signals, and Systems Nonlinear Control of Planar Multibody Systems in Shape Space N. Sreenath Invertibility of Discrete Event Dynamic Systems C.M. Ozveren and A.S. Willsky. Continuity of Dynamical Systems: The Continuous-Time Case J. W. Nieuwenhuis and J. C. Willems Asymptotic Analysis of Nonlinear Stochastic Risk-Sensitive Control and Differential Games M. R. James Factorization and the Nehari Theorem in Time-Varying Systems G. Tadmor and M. Verma *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: zeman@sbee.eng.sunysb.edu (Prof. Armen H. Zemanian) TOC: CIRCUITS, SYSTEMS, AND SIGNAL PROCESSING 11,3 (1992) Frequency domain analysis of robust signal estimators, Mohamed L. Hambaba Fast progressive reconstruction of images using the DCT, M. Miran and K. R. Rao Improved neural networks for analog-to-digital conversion, M. Vidyasagar On the analysis of two-dimensional discrete singular systems, F. L. Lewis and B. G. Mertzios On observability of singular systems, Ulviye Baser and Kadri Ozcaldiran Design of universal, variable frequency range FIR digital differentiators Balbir Kumar and S. C. Dutta Roy *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: SIAM TOC: SIAM Journal on Control and Optimization 30,4 (July 1992) Regularized Maximum Likelihood Estimate for Infinite-Dimensional Parameter in Stochastic Parabolic Systems Shin Ichi Aihara Algebraic Riccati Equations and the Distance to the Nearest Uncontrollable Pair P. Gahihnet and A. J. Laub Wellposedness and the Lavrentiev Phenomenon Tullio Zolezzi Parameter Convergence and Uniqueness in Nonminimal Parameterizations for Multivariable Adaptive Control Yosef Willner, Michael Heymann, and Marc Bodson Overtaking Optimal Regulation and Tracking of Piecewise Diffusion Linear Systems Alain Haurie and Arie Leizarowitz Acceleration of Stochastic Approximation by Averaging B. T. Polyak and A. B. Juditsky Strongly and Weakly Relaxed Controls for Time Delay Systems Javier F. Rosenblueth Unmixed Solutions of the Discrete-Time Algebraic Riccati Equation H. K. Wimmer On the Existence of Control Lyapunov Functions: Generalizations of Vidyasagar's Theorem on Nonlinear Stabilization John Tsinias Parameter Estimation for Distributed Equations in Parameter-Dependent State Spaces: Applications to Shape Identification Patricia K. Lamm Some Properties of Distributed Control Systems with Finite-Dimensional Input Space Luciano Pandolfi On the Continuous Dependence with Respect to Sampling of the Linear Quadratic Regulator Problem for Distributed Parameter Systems I. G. Rosen and C. Wang On the Principle of Smooth Fit for a Class of Singular Stochastic Control Problems for Diffusions Jin Ma *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: SIAM TOC: SIAM Journal on Control and Optimization 30,5 (Sep 1992) Exact Semi-Internal Control of an Euler-Bernoulli Equation Jong Uhn Kim Sharp Sufficient Conditions for the Observation, Control, and Stabilization of Waves from the Boundary Claude Bardos, Gilles Lebeau, and Jeffrey Rauch Exact Boundary Controllability of the Wave Equation as the Limit of Internal Controllability Caroline Fabre A Generalized Estimate of the Number of Zeros for Solutions of a Class of Linear Differential Equations A. V. Dmitruk A Dirichlet Boundary Control Problem for the Strongly Damped Wave Equation Francesca Bucci Controllability of l2 Systems Fabio Fagnani and Jan C. Willems Algebraic Differential Equations and Rational Control Systems Yuan Wang and Eduardo D. Sontag Optimal Switching Among Several Brownian Motions Robert J. Vanderbei Approximation in Control of Thermoelastic Systems J. S. Gibson, I. G. Rosen, and G. Tao On Multivariate Robust Stability Charles K. Chui and H. N. Mhaskar Rate of Convergence of Recursive Estimators Laszlo Gerencser Singularly Perturbed Optimal Control Problems Vladmir Gaitsgory *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: Richard A. Brualdi Contents of volumes 168, 169, 170, and 171 of LAA The contents of LAA beginning with Volume 150 as well as information on the current special issues of LAA are available from the ILAS Information center. They can be obtained as follows: Send an email message to listserv@technion.bitnet (or listserv@technion.technion.ac.il) with the commands in the mail body of the message: get LAA 91-92 get LAA SPECIAL The files will then be sent to you as an email message. The files can also be obtained by anonymous FTP. Contents LAA Volume 168, April 15, 1992 Hongyuan Zha (Stanford, California) A Numerical Algorithm for Computing the Restricted Singular Value Decomposition of Matrix Triplets 1 Josep Ferrer and Ferran Puerta (Barcelona, Spain) Similarity of Non-everywhere Defined Linear Maps 27 Wang Shougen (Shanghai, China) Computing the Eigenvalues of Modified Symmetric Matrices 57 Robert E. Atalla (Athens, Ohio) Characterization of Weakly Monotone Stochastic Matrices 65 H. Valiaho (Helsinki, Finland) Determining Subspaces on Which a Matrix Is Nonnegative Definite 71 Bart L. R. De Moor (Leuven, Belgium) On the Structure and Geometry of the Product Singular Value Decomposition 95 Zbigniew Jelonek (Krakow, Poland) Maximal Sets of Linearly Independent Vectors in a Free Module Over a Commutative Ring 137 Tomasz Szulc (Poznan, Poland) A Nonsingularity Criterion for Complex Matrices 145 Moshe Haviv, Ya'acov Ritov (Jerusalem, Israel), and Uriel G. Rothblum (Haifa, Israel) Taylor Expansions of Eigenvalues of Perturbed Matrices With Applications to Spectral Radii of Nonnegative Matrices 159 Arie Leizarowitz (Haifa, Israel) On Infinite Products of Stochastic Matrices 189 Lieba Rodman (Williamsburg, Virginia) and Tamir Shalom (New York, New York) Jordan Forms of Completions of Partial Upper Triangular Matrices 221 S. W. Drury (Montreal, Quebec, Canada) A Counterexample to a Question of Merikoski and Virtanen on the Compounds of Unitary Matrices 251 Roman Zymslony and Hilmar Drygas (Kassel, Germany) Jordan Algebras and Bayesian Quadratic Estimation of Variance Components 259 Author Index 277 ******* Contents LAA Volume 169, May 1992 Marko Razpet (Ljubljana, Yugoslavia) A Relative of the Shift Operator 1 Xu Zhong (Xian, People's Republic of China) On Moore-Penrose Inverses of Toeplitz Matrices 9 Richard D. Hill (Pocatello, Idaho) and Steven R. Waters (Angwin, California) On k-Real and k-Hermitian Matrices 17 Kung-Mei Chao (Hong Kong, People's Republic of China) and Chi Song Wong (Windsor, Ontario, Canada) Applications of M-Matrices to Majorization 31 William C. Waterhouse (University Park, Pennsylvania) Displacement Operators Relative to Group Matrices 41 Boris Mirman (Andover, Massachusetts) A Source of Counterexamples in Operator Theory and How to Construct Them 49 Marcelo D. Fragoso (Rio de Janeiro, Brazil) and Carlos E. de Souza (Newcastle, Australia) Maximal Solution of a Certain Class of Periodic Riccati Differential Equations 61 Harry Gingold (Morgantown, West Virginia) and Po-Fang Hsieh (Kalamazoo, Michigan) Globally Analytic Triangularization of a Matrix Function 75 Dongyi Ye (Toulouse, France) When Is the Greatest Eigenvalue of a Parametrized Symmetric Matrix a Convex Function of the Parameter? 103 C. Bergthaller (Wuppertal, Germany) and Ivan Singer (Bucharest, Romania) The Distance to a Polyhedron 111 D. A. Gregory, S. J. Kirkland, and N. J. Pullman (Kingston, Ontario, Canada) Row-Stochastic Matrices With a Common Left Fixed Vector 131 Isabel Cabral (Monte da Caparica, Portugal) and Fernando C. Silva (Lisboa, Portugal) Similarity Invariants of Completions of Submatrices 151 Pei Yuan Wu (Hsinchu, Taiwan, People's Republic of China) Which Linear Transformations Have Isomorphic Hyperinvariant Subspace Lattices? 163 D. de Caen, D. A. Gregory, S. J. Kirkland, N. J. Pullman (Kingston, Ontario, Canada), and J. S. Maybee (Boulder, Colorado) Algebraic Multiplicity of the Eigenvalues of a Tournament Matrix 179 M. Kuijper and J. M. Schumacher (Amsterdam, The Netherlands) Realization and Partial Fractions 195 U. Helmke (Regensburg, Germany) and J. B. Moore (Canberra, Australia) Singular-Value Decomposition via Gradient and Self-Equivalent Flows 223 Ren-cang Li (Chicago, Illinois) On Eigenvalues of a Rayleigh Quotient Matrix 249 Yi-ming Gao and Xiao-hui Wang (Changchun, Jinlin, People's Republic of China) Criteria for Generalized Diagonally Dominant Matrices and M-Matrices 257 Yongzhong Song (Nanjing, People's Republic of China) Lower Bounds for the Perron Root of a Nonnegative Matrix 269 Author Index 279 ********** Contents LAA Volume 170, June, 1992 Elliot Linzer (Yorktown Heights, New York) On the Stability of Solution Methods for Band Toeplitz Systems 1 G. A. Watson (Dundee, Scotland) Characterization of the Subdifferential of Some Matrix Norms 33 Miroslav Fiedler and Zdenek Vavrin (Praha, Czechoslovakia) A Subclass of Symmetric Loewner Matrices 47 Pentti Haukkanen (Tampere, Finland) Higher-Dimensional GCD Matrices 53 Richard W. Cottle and Sy-Ming Guu (Stanford, California) Two Characterizations of Sufficient Matrices 65 J. R. Bar-on and C. W. Gray (El Segundo, California) A Generalized Polar Decomposition 75 J. Zhu and C. H. Morales (Huntsville, Alabama) On Linear Ordinary Differential Equations With Functionally Commutative Coefficient Matrices 81 Catherine M. Kunicki and Richard D. Hill (Pocatello, Idaho) Normal-Preserving Linear Transformations 107 James R. Angelos (Mt. Pleasant, Michigan), Carl C. Cowen (West Lafayette, Indiana) and Sivaram K. Narayan (Mt. Pleasant, Michigan) Triangular Truncation and Finding the Norm of a Hadamard Multiplier 117 Jun Ichi Fujii (Osaka, Japan) Operator Means and Range Inclusion 137 Rafael Bru (Valencia, Spain), Graciano de Oliveira, and Jose Vitoria (Coimbra, Portugal) REPORT: Meeting of Matrix Analysis and Applications, 3-5 October 1989, Universidad Politecnica de Valencia, Valencia, Spain 147 Author Index 281 **** Contents Volume 171, July 1, 1992 Fuad Kittaneh (Bloomington, Indiana) A Note on the Arithmetic-Geometric-Mean Inequality for Matrices 1 Charles A. Hall and Xiu Ye (Pittsburgh, Pennsylvania) Construction of Null Bases for the Divergence Operator Associated With Incompressible Navier-Stokes Equations 9 Svatopluk Poljak (Praha, Czechoslovakia) Minimum Spectral Radius of a Weighted Graph 53 Curtis Greene (Haverford, Pennsylvania) Proof of a Conjecture on Immanants of the Jacobi-Trudi Matrix 65 Jianming Miao and Adi Ben-Israel (New Brunswick, New Jersey) On Principal Angles Between Subspaces in Rn* 81 Arthur M. DuPre (Newark, New Jersey) and Seymour Kass (Boston, Massachusetts) Distance and Parallelism Between Flats in Rn 99 Ling Chen (Guangzhou, China) and Chi Song Wong (Windsor, Ontario, Canada) Inequalities for Singular Values and Traces 109 Jiang Erxiong (Shanghai, China) A Note on the Double-Shift QL Algorithm 121 J. Pasupathy and R. A. Damodar (Bangalore, India) The Gaussian Toeplitz Matrix 133 B. Uhrin (Budapest, Hungary) Touching Points of a Star-Shaped Set With an Affine Subspace 149 Daniel Hershkowitz (Haifa, Israel) Recent Directions in Matrix Stability 161 Yang Shangjun (Hefei, Anhui, People's Republic of China) A Note on the Exponent Set of Primitive Minimally Strong Digraphs 187 P. Turkowski (Krakow, Poland) Structure of Real Lie Algebras 197 Sung Je Cho, Seung-Hyeok Kye, and Sa Ge Lee (Seoul, Korea) Generalized Choi Maps in Three-Dimensional Matrix Algebra 213 Wilbur N. Dale and Malcolm C. Smith (Columbus, Ohio) A Note on Eventually Time-Invariant Systems 225 Chin Chang and Tryphon T. Georgiou (Minneapolis, Minnesota) On a Schur-Algorithm Based Approach to Spectral Factorization: Connection With the Riccati Equation 233 James V. Burke (Seattle, Washington) and Michael L. Overton (New York, New York) Stable Perturbations of Nonsymmetric Matrices 249 Book Review Stephen G. Nash (Fairfax, Virginia) Review of Fundamentals of Matrix Computations by David S. Watkins 275 Author Index 279 LAA Contents Volume 172, July 15, 1992 (Proceedings of the NIU Conference) David Carlson (San Diego, California), Daniel Hershkowitz, and Dafna Shasha (Haifa, Israel) Block Diagonal Semistability Factors and Lyapunov Semistability of Block Triangular Matrices 1 Y. P. Hong and C.-T. Pan (DeKalb, Illinois) A Lower Bound for the Smallest Singular Value 27 Kenneth D. Clark (Research Triangle Park, North Carolina) Decomposition of Hessenberg DAE Systems to State Space Form 33 Marcin Paprzycki (Odessa, Texas) Comparisons of Gaussian Elimination Algorithms on a Cray Y-MP 57 Shmuel Friedland (Chicago, Illinois) Lower Bounds for the First Eigenvalue of Certain *iM-Matrices Associated With Graphs 71 Richard E. Faulkenberry (North Dartmouth, Massachusetts) The Continuous Kernel of a Nonsquare Rational Matrix Function 85 Jean H. Bevis and Frank J. Hall (Atlanta, Georgia) Nested Range Conditions for *iL*iU Factorizations of Integer Matrices 97 Daniel L. Boley (Minneapolis, Minnesota), Tong J. Lee, and Franklin T. Luk (Ithaca, New York) The Lanczos Algorithm and Hankel Matrix Factorization 109 Leonid Gurvits (New York, New York), Leiba Rodman (Williamsburg, Virginia), and Tamir Shalom (New York, New York) Controllability and Completion of Partial Upper Triangular Matrices Over Rings 135 Richard A. Brualdi and Geum-Sug Hwang (Madison, Wisconsin) Generalized Transitive Tournaments and Doubly Stochastic Matrices 151 James Nagy (Raleigh, North Carolina) and Robert J. Plemmons (Winston-Salem, North Carolina) An Inverse Factorization Algorithm for Linear Prediction 169 S. L. Chung, F. B. Hanson, and H. H. Xu (Chicago, Illinois) Parallel Stochastic Dynamic Programming: Finite Element Methods 197 D. Calvetti (Hoboken, New Jersey) and L. Reichel (Kent, Ohio) A Chebychev-Vandermonde Solver 219 James R. Bunch and Ricardo D. Fierro (La Jolla, California) A Constant-False-Alarm-Rate Algorithm 231 Thomas J. Laffey and Eleanor Meehan (Dublin, Ireland) An Extension of a Factorization Theorem of Wedderburn to Matrix Rings 243 Richard A. Brualdi and Hyung Chan Jung (Madison, Wisconsin) Maximum and Minimum Jump Number of Posets From Matrices 261 D. Y. Hu (Lexington, Kentucky) and L. Reichel (Kent, Ohio) Krylov-Subspace Methods for the Sylvester Equation 283 G. S. Ammar (DeKalb, Illinois), W. B. Gragg (Monterey, California), and L. Reichel (Kent, Ohio) Downdating of Szego@a3 Polynomials and Data-Fitting Applications 315 Roger A. Horn (Baltimore, Maryland) and Roy Mathias (Williamsburg, Virginia) Block-Matrix Generalizations of Schur's Basic Theorems on Hadamard Products 337 P. Amodio and L. Brugnano (Bari, Italy) Parallel Factorizations and Parallel Solvers for Tridiagonal Linear Systems 347 Author Index 365 *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: SIAM Hans Schneider LINEAR ALGEBRA AND ITS APPLICATIONS Workshop on Generalized Inverses Indian Statistical Institute New Delhi, India, December 11-16, 1992 There will be a special section in an issue of LAA devoted to the above conference. All conference participants are invited to submit papers to this section. Normal refereeing procedures will apply. The deadline for submission is March 15,1993. Papers should be submitted to one of the special editors listed below. R.B.Bapat Indian Statistical Institute 7, SJS Sansanwal Marg New Delhi, 110016, India Email : rbb@isid.ernet.in Robert E. Hartwig Department of Mathematics North Carolina State University Raleigh, North Carolina, 27695-8205 USA Email:REH@NCSUMATH.BITNET S.K.Mitra Indian Statistical Institute 7, SJS Sansanwal Marg New Delhi, 110016, India Email : mitra@isid.ernet.in *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: George Yin Announcing a New Journal STOCHASTIC OPTIMIZATION AND DESIGN {\smc Stochastic Optimization and Design} is an international journal dealing with theoretical and computational problems of stochastic optimization and experimental design as well as their applications in science, engineering, and management. \centerline{Managing Editor: Sergey Ermakov; Co-editor: Anatoly Zhigljavsky} Editorial Board: Anthony Atkinson (London School of Business and Economics, UK); Kathryn Chaloner (University of Minnesota, USA); Valery Fedorov (Central Institute of Economics and Mathematics, Russia); Vladimir Jakubovitch (St. Petersburg University, Russia); Victor Kurotschka (Free University, Berlin, Germany); Michail Malutov (Moscow University, Russia); Kurt Marti (University of Munich, Germany); Vladimir Nekrutkin (St. Petersburg University, Russia); Mikhail Nikulin (Mathematical Institute, Russia); Georg Pflug (University of Vienna, Austria); Boris Polyak (Institute of Control Sciences, Russia); Luc Pronzato (Laboratorie des Signaux et Systemes, France); Josef Romanovsky (St. Petersburg University, Russia); Hans-Paul Schwefel (University of Dortmund, Germany); Henry Wynn (City University, UK) George Yin (Wayne State University, Detroit, USA); Ryszard Zielinski (Mathematical Institute, Warsaw, Poland); Antanas \u Zilinskas (Lithuanian Institute of Mathematics and Cybernetics). \centerline{\smc Aims and Scope} The journal publishes carefully selected papers dealing with all theoretical and applied aspects of stochastic optimization. The main topics are: Stochastic programing and optimization; Stochastic models in search; Statistical design and experiment; Optimization problems in statistics; Numerical simulation and computer experiments; Various applications in related fields. Besides research articles and expository papers on theory and algorithms, papers on numerical experiments and on applications in engineering, management and other fields are welcome. Submissions dealing with problems arising from applications are especially invited. The journal will also publish reviews of appropriate books and special issues of journals. \bigskip \centerline{\smc Frequency: Quarterly-\$345-1992-Volume 1} \medskip \centerline{\smc Publisher: Nova Science Publishers, Inc.} \medskip Nova Science Publishers, Inc., 6080 Jericho Turnpike, Suite 207, Commack NY 11725. Tel. (516) 499-3103/3106; Telex \#510-101-2161; Fax (516) 499-3146. \vfill \eject \centerline{\bf INFORMATION FOR AUTHORS} \bigskip {\bf 1. Scope.} The journal publishes carefully selected papers dealing with every theoretical and applied aspects of stochastic optimization. The main topics are: Stochastic programing and optimization; Stochastic models in search; Statistical design and experiment; Optimization problems in statistics; Numerical simulation and computer experiments; Various applications in related fields. {\bf 2. Submission of Manuscript.} \item{2.1} Two copies of manuscripts (in English) may be sent to: Professor S.M. Ermakov, Mathematical Department, St. Petersburg University, Biblotechnaya sq. 2, 19804, St. Petersburg, Petrodvorets, Russia, or to any member of the Editorial Board, or to Nova Science Publishers. \item{2.2} Manuscript should be typewritten on one side of paper with double spacing and wide left and right margins, or in a camera-ready single column format using laser printer output. \item{2.3} Only original papers will be considered. The authors must provide assurance that the paper has not been published, or submitted for publication, elsewhere. \item{2.4} Name affiliation, and full address of the author(s) including address for correspondence should be given on the title page. \item{2.5} Each paper should have a concise abstract indicating both the objectives and results of the research, and be a complete statement in itself. In addition, 3-5 key words, for use in indexing, should be supplied. \item{2.6} No formal limit exists for the length of a paper, but the editors may recommend condensation where appropriate. \item{2.7} All symbols should be clearly identified on the manuscript to avoid confusion in typesetting. \item{2.8} References should be listed in alphabetical and chronological order. Abbreviation should be avoided with the exception of J. (for ``journal'') and the abbreviations of internationally well-known societies. Preferred forms of articles in journals, books and reference to books are: Zhigljavsky, A.A. (1991) Theory of Global Random Search, Kluwer Academic Publishers, Dordrecht, e.a.; Ermakov, S.M. (1989) Random interpolation in the theory of experimental design, Computational Statistics and Data Analysis 8, 75-80. Rinnoy Kan A.H.G. (1987) Probabilistic analysis of algorithms, In: Surveys in {\it Combinatorial Optimization}, North-Holland, Amsterdam e.a., 365-384. References in the text should appear as: [3, 10], etc. \item{2.9} Figures must be photographically reproducible. Line drawings, including lettering, must be clear and sharp and should be suitable for reproduction. Half-tone photographs should be of high contrast and be marked with any legend the author wishes to have in the final form. Each figure should be numbered, and a list of captions appended to the manuscript. Figures should be submitted in triplicate. \item{2.10} To ensure more rapid publication and to eliminate the possibility of typesetting errors, please include an electronic copy (floppy disk) along with the typewritten copy whenever possible. {\bf 3. Copyright:} Authors will be asked, upon acceptance of an article, to transfer copyright of the article to the publisher. This will ensure the widest possible dissemination of information under copyright laws. {\bf 4. Footnotes:} Footnotes should be kept to an absolute minimum and used only when essential. {\bf 5. Formulae:} Formulae should be typewritten whenever possible. Alternatively, a fine drawing pen and black ink should be used. It is extremely important that all mathematical symbols and letters used are identified and listed and that the required style of appearance of such symbols is clearly indicated, e.g., boldface, italics, script, outline, fractur, etc. Sub and superscripts should be clearly indicated where confusion might arise. Use a full stop as a decimal sign. Identify in the margin any symbols that might be confused with similar symbols, e.g., letter l and figure 1, capital letter O and figure 0, letter e, epsilon, and element sign, etc. {\bf 6. Tables:} Tables, which should be typed on separate sheets, must be numbered consecutively with roman numerals and have titles. They should be prepared in such a manner that no break is necessary. The used of vertical lines in tables is strongly discouraged. The approximate required locations of the tables should be indicated in the left-hand margin of the manuscript. {\bf 7. Proofs:} The publisher will send the author(s) proofs for corrections. Author(s) should endeavour to be diligent and prompt in proofreading. Extensive alterations in proofs other than printer's errors may be charged to the authors. {\bf Offprints:} The publisher will provide each first-named author with 25 offprints of his paper free of charge. {\bf Page Charges:} No page charges are levied on authors or their institutions. {\bf Book Reviews:} The journal will publish reviews of: -books on stochastic optimization and experimental design and related topics; -special issues of journals and proceedings of conferences devoted to the above areas. Please send material for review to the managing editor. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: Teng-Tiow TAY ( eletaytt@nusvm.nus.sg ) Announcing a new journal: ASIA-PACIFIC ENGINEERING JOURNAL PART A - ELECTRICAL ENGINEERING The journal The Asia-Pacific Engineering Journal will provide a unique source of information on the research activities and trends in technology in the rapidly changing Asia Pacific region. It will . be international in both scope and outlook. . keep the reader fully briefed with major papers, reports and reviews. . be rigorously refereed. . ensure topicality with inclusion of state of the art review articles. . be practical with case studies and applications-oriented contribution. The Journal will be published in separate parts that cover the disciplines of Electrical, Mechanical, Civil, Chemical and Industrial engineering. The first part, Part A: Electrical Engineering with initial emphasis on the four areas of Microelectronics, Communications Engineering, Computer Engineering and Control and Automation will be published four times a year. Subscription Information World Scientific Publishing Co. Farrer Road, PO Box 128 Singapore 9128 fax: (65) 3825919 (Singapore) (81) 4463356 (UK) (201) 4879656 (U.S.A.) (91) 812 344593 (India) -------------------------------------------------------------------------- Contents of the latest issue: ASIA-PACIFIC ENGINEERING JOURNAL Part A: Electrical Engineering - Control & Automation Special Issue on Intelligent Control Systems Volume 2, Number 1, March 1992 CONTENTS Robust versus Adaptive Control Graham C Goodwin & Ya Z Ysypkin Synthesis of Feedback Linearizatiion and Variable Structure Control with Neural Net Compensation Jian-Xin Xu, J Donne & U Ozguner Intelligent Control in Anaesthesia D A Linkens Industrial Developments in Intelligent Adaptive Control Shigehiko Yamamoto A New Fuzzy Logic Control Scheme for Stability Enhancement of Power Systems C M Lim & T Hiyama Application of Fixed Memory Identification Algorithm for an Adaptive Observer J Shanmugan & S Renganathan A Design of Learning Control System for Multivariable Systems M Yamakita & K Furuta Design of an Intelligent PID Controller C C Hang & K K Sin Automation of Construction: Applying a Multi-functional Robot to Surface Treatment Yong Zhou & Zeng-jin Han ----------------------------------------------------------------------- Coming up ........ March 1993 issue on Control and Automation with Special Section on Fuzzy Control Systems Submission of Paper to: APEJ Managing Editor National University of Singapore Faculty of Engineering SINGAPORE 0511 fax: (65) 7773847 Dateline for receipt of full paper: 15th October 1992 Guideline for Contributors 1. 3 copies of the manuscripts in English which includes an abstract of not more than 100 words, references, table, figures and figure captions should be submitted to the Managing Editor. 2. Legible, compact notation should be used, conforming to current practice. Footnotes should be indicated consecutively in the text with superscript lower case letter. References should be numbered consecutively using superscript arabic numerals in the order of citation. 3. Original copies of figures should be large enough for reduction to a minimum of 50% of their original size. 4. Once a paper is accepted, authors are assumed to cede copyrights to their paper over to the publisher. It is the author's responsibility to obtain written permission to reproduce copyright material. 5. All submitted papers will be acknowledged and refereed. Editorial Board (Control & Automation) K.J. Astrom (Sweden), K. Furuta (Japan), G. Goodwin (Australia), Zeng-Jin Han (P.R. China), C.C. Hang (Singapore), F. Harashima (Japan), R.N.K. Loh (USA), M.G.Rodd (UK), Y.P. Shih (R.O. China), S. Yamamoto (Japan) *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** End of Eletter 51, Part 1. E-LETTER on Systems, Control, and Signal Processing ISSUE No. 51, Part 2 of 3; 12 June 1992 Editors: Bradley W. Dickinson bradley@princeton.edu or bradley@pucc.bitnet Eduardo D. Sontag sontag@hilbert.rutgers.edu or sontag@pisces.bitnet Welcome. We remind you that items for posting can be emailed to either of the editors. PLEASE SEND CONTRIBUTIONS, since the eletter can only be useful if everyone participates. A REQUEST: It would be useful if articles are already sent in the format that we use, starting with a "Contributed by:..." and a title centered in the next line. In addition, please provide a 60-character title for the Contents. Thanks! NOTE: if you are using an editor to read this mailing and if at any point you wish to skip to the next article, you can accomplish this by searching for the string: *.** Contents Changes to mailing list Personals: People on the move People going up Awards and Recognitions IEEE Control Systems Society News: Announcement: IEEE Transactions on Control Systems Technology Journals: TOC: Mathematics of Control, Signals, & Systems 5,No.3 (1992) Forthcoming papers, MCSS TOC: Circuits, Systems, and Signal Processing 11,3 (1992) TOC: SIAM Journal on Control and Optimization 30,4 (July 1992) TOC: SIAM Journal on Control and Optimization 30,5 (Sep 1992) TOC: volumes 168, 169, 170, 171, and 172 of LAA LAA: Special Issue, Workshop on Generalized Inverses New Journal: Stochastic Optimization and Design New journal: Asia-Pacific Engineering Journal-- EE ------> (Start of Part 2) Conferences: Variable Structure and Lyapunov Control, 7-9 Sept 92, Sheffield Systems and Control: Themes for the 90's, 29-30 June 92, London 10th Int. Conf. on Analysis and Optimization of Systems IEEE 1992 Information Theory Wkshp. 21-26 June 92, Brazil Applied Probability, June 16-18 1993, Paris ------> (End of Part 2) Large Scale Scientific Computation, 8-31-92, Bielefeld IEEE 1993 ICASSP, April 27-30, 1993, Minneapolis IEEE Fuzzy Systems, San Francisco, March 28 - April 1, 1993 New Books Published: The H-Infinity Control Problem: A State Space Approach Faculty Positions Available/Wanted: Positions Available ECE, NEWCASTLE Position Wanted Post-Doc Speech Research at Bellcore UPATE ON SCAD DATABASE Reports & Software available Nonlinear_System_Toolbox Available Control Information Database and Newsletters at Glasgow Preprints/Software available via anonymous ftp from Stanford Reports by Stephen Boyd et al. Misc: Gradute Students Wanted, video, Ankara, Turkey Proper symbols for emotions in email :-) *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: Alan Zinober A.Zinober@pa.shef.ac.uk IEEE Workshop on Variable Structure and Lyapunov Control IEEE WORKSHOP VARIABLE STRUCTURE AND LYAPUNOV CONTROL OF UNCERTAIN DYNAMICAL SYSTEMS 7-9 September 1992 University of Sheffield WORKSHOP REGISTRATION The fee includes Workshop proceedings, lunches, teas, cocktail party, workshop dinner (excluding drinks), and a sightseeing trip to the Peak District, which includes a tour of Haddon Hall, a large 14th century medieval stately home with delightful gardens. Plenary speakers will include Martin Corless, Gene Ryan, Hebertt Sira-Ramirez and Vadim Utkin. The Workshop is cooperatively sponsored by the IEEE Control Chapter of the United Kingdom and Republic of Ireland. Authors will be informed of acceptance of their papers by 29 April 1992, and full manuscripts should be submitted by 19 June 1992. There will be a welcoming cocktail party on Sunday night, an optional Chinese dinner on Monday night and a sightseeing tour on Tuesday afternoon followed by the Workshop dinner. Advance registration fee \pounds 175.00 (posted before 22 May 1992) Late registration fee \pounds 235.00 Mail to : Dr Alan Zinober IEEE Workshop Department of Applied and Computational Mathematics University of Sheffield Sheffield S10 2TN UK Email : A.Zinober@pa.shef.ac.uk Fax : UK 742 739826 Advance registration, before the conference, is encouraged. All attendees MUST register, and authors must present their papers. Bed and breakfast accommodation in a study bedroom in a university hall of residence adjacent to the conference centre, is available at \pounds 20 per night. To ensure a reservation the booking should be made by 22 May 1992. If you need hotel accommodation, please advise in good time the full details of your requirements. For additional information, please contact Alan Zinober. Workshop Chairman and Local Organiser : Dr A S I Zinober Technical Program Committee : Professor A Balestrino (Universita di Pisa, Italy) Professor G Bartolini (Universita di Genova, Italy) Professor M Corless (Purdue University, USA) Professor K Furuta (Tokyo Institute of Technology, Japan) Professor F Garofalo (Universita degli Studi di Napoli, Italy) Professor L Glielmo (Universita degli Studi di Napoli, Italy) Professor L Guzzella (ETH Zurich, Switzerland) Professor H Hashimoto (University of Tokyo, Japan) Professor K Ohnishi (Keio University, Japan) Dr E P Ryan (University of Bath, UK) Professor A Sabanovic (Keio University, Japan) Dr H Sira-Ramirez (Universidad de los Andes, Venezuela) Dr S Spurgeon (University of Leicester, UK) (local organisation) Dr A Stotsky (St Petersburg University, Russia) Professor V I Utkin (Institute of Control Sciences Moscow, Russia) Dr K-K D Young (Lawrence Livermore National Laboratory, USA) Dr X H Yu (University of Central Queensland, Australia) - - - - - - - - - - - - - - - - - - - - - - - IEEE WORKSHOP 7-9 September 1992 Date : Name : Title : University or Firm : Address : City, Country and Postcode : Phone : Fax : Email : Dietary requirements : e.g. vegetarian Registration fee : University accommodation : dates Accommodation fee enclosed : Chinese dinner party (Monday night) : Cost \pounds 20.00 excluding drinks yes/no Total fee enclosed : Please make your cheque or bank order payable to "IEEE Workshop" in British pounds. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** From: Mark Davis (mhad@ps.ic.ac.uk) SYSTEMS AND CONTROL: THEMES FOR THE NINTIES A Conference in Honour of Professor D Q Mayne Imperial College, London England 29-30 June 1992 This conference is to honour the contributions of Professor D Q Mayne to research and to the creation of a strong research group at Imperial College. The speakers listed below will present papers surveying the current status and future prospects in important areas of systems and control research. There will be no programme of contributed talks J S Baras R W Brockett P E Caines M H A Davis K Glover G C Goodwin Y C Ho D J N Limebeer S K Mitter E Polak R B Vinter The conference will be held at Imperial College in Central London. Low cost rooms are available in the College Halls of Residence. There is a 50-pound registration fee (35 pounds for doctoral students). To obtain further information, send an email message to conf@ps.ic.ac.uk or a fax to M H A Davis, +44 71 581 9488 *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: R. Curtain (visiting at INRIA-Rocquencourt) 10th International Conference on Analysis and Optimization of Systems : STATE AND FREQUENCY DOMAIN APPROACHES FOR INFINITE-DIMENSIONAL SYSTEMS FINAL PROGRAM ------------- June 9 - 12, 1992 Sophia-Antipolis (France) International Organizing Committee Chairperson R.CURTAIN University of Groningen / INRIA-Rocquencourt J.BALL Virginia University, USA J.BARAS University of Maryland, USA L.BARATCHART INRIA-Sophia, France J.BLUM Universite de Grenoble, France F.CALLIER Dept. Math. FUNDP, Namur, Belgium G.Da PRATO Scuola Normale Superiore, Pisa, Italy M.DELFOUR Centre de Recherches Math., Montreal, Canada P.GAHINET INRIA-Rocquencourt, France W.KRABS Techn. Hochschule Darmstadt, Germany A.J.PRITCHARD University of Warwick, UK M.SORINE INRIA-Rocquencourt, France J.P.YVON INRIA-Rocquencourt /Universite de Technologie de Compiegne, France J.ZABCZYK Institute of Mathematics, Warsaw, Poland Local Organizing Committee L.BARATCHART INRIA-Sophia, France J.BLUM Universite de Grenoble, France P.GAHINET INRIA-Rocquencourt, France M.SORINE INRIA-Rocquencourt, France J.P.YVON INRIA-Rocquencourt /Universite de Technologie de Compiegne, France Sollicited funding support DRET Direction des Recherches Etudes et Techniques ONREUR Office of US Naval Research in Europe THOMSON Secretariat C.GENEST INRIA-Rocquencourt, France F.TAPISSIER INRIA-Rocquencourt, France Presentation The 10th International Conference on Analysis and Optimization of Systems organized by INRIA-Rocquencourt is marked by a change in form: instead of covering a wide range of topics, this conference is devoted to the domain of infinite dimensional systems and, in particular, to State and Frequency Domain Approaches for Infinite Dimensional Systems The aim of this conference is to bring together researchers in automatic control and mathematics and engineers working in the field of infinite-dimensional systems who are specialists in one of the following categories of mathematical approaches : - semi-group approach - partial differential approaches - frequency domain approaches - syntheses of state and frequency domain approaches Since these approaches use very different and sophisticated techniques, it is unusual for a scientist to be expert in all. Nevertheless, these different approaches all purport to address the same control problems for the same classes of infinite-dimensional systems. Consequently, it is important to compare and discuss these different mathematical techniques. To help ameliorate the communication gap a series of introductory tutorial lectures by 12 leading specialists form a central part of this conference. In addition, key surveys of recent results are included among over 30 contributed papers. To help stimulate the exchange of ideas and points of view a round table discussion comparing the advantages and disadvantages of the different approaches will complete the conference. We hope that this conference will stimulate interaction and fruitful collaboration in the future between scientists of all persuasions in the challenging field of infinite-dimensional systems theory. Programme Tuesday june 9, 1992 9h00-10h00 Registration 10h15-10h30 Opening Address R. CURTAIN (University of Groningen, the Netherlands & INRIA Rocquencourt) theme 1 semi-group approach 10h30-11h30 Plenary 1.1 Introduction to the Semi-Group Approach A. J. PRITCHARD (University of Warwick, UK) 11h30-12h30 Plenary 1.2 Linear Quadratic Optimal Control and Riccati Equations I. LACIESKA (University of Virginia, USA) 12h30-14h30 Lunch 14h30-15h30 Plenary 1.3 State-Space Approach to the H0 Control Problem B. Van KEULEN (University of Groningen, the Netherlands & INRIA Rocquencourt) 15h30-16h00 Break theme 2 synthesis of state and frequency domain approaches 16h00-17h00 Plenary 2.1 Transfer Functions J. WINKIN (FNDP, Namur, Belgium) 17h00-18h00 Plenary 2.2 Coprime Factorization Approach to Control Synthesis H. LOGEMANN (Universit Wednesday June 10, 1992 9h00-10h00 Plenary 2.3 Robust Controllers for Infinite-Dimensional Systems R. CURTAIN (University of Groningen, the Netherlands & INRIA Rocquencourt) 10h00-10h30 Break theme 3 partial differential equation approaches 10h30-11h30 Plenary 3.1 Optimal Control for P.D.E.Us using the Lions Approach M.-C. DELFOUR (Universite de Montreal, Canada) 11h30-12h30 Plenary 3.2 Exact Controllability and Stabilization using High Frequency Asymptotic Approach G. LEBEAU (Universite Paris XI, France) 12h30-14h30 Lunch Parallel Sessions session 1A 14h30-16h00 Geometric Theory for Infinite Dimensional Systems H. ZWART (Universiteit Twente, the Netherlands) Simultaneous Triangular-Decoupling, Disturbance-Rejection and Stabization Problem for Infinite-Dimensional Systems N. Otsuka, K. Toroichi (university of Tsukuba, Japan) H. Inaba (Tokyo Denki University, Japan) Uniformity of Stability for Infinite-Dimensional Systems Y. YAMAMOTO (Kyoto University, Japan) H.J. ZWART (Universiteit Twente, the Netherlands) session 1B 14h30-16h00 High Frequency Asymptotic Approach for Incomplete Spectral and Local Controllability C. BARDOS (Universite Paris VII, France) Modelling and Controllability of an Elastic Plate-Beam Configuration J. E. LAGNESE (Georgetown University, Washington, USA) Modele Simple dUAmortisseur Viscoelastique - Application a une Corde Vibrante G. MONTSENY, B. MBODJE (L.A.A.S., Toulouse, France) J. AUDOUNET (Universite Paul Sabatier, Toulouse) 16h00-16h30 Break Parallel Sessions session 2A 16h30-18h30 Relationships between Input-Output Stability and Exponential Stability R. REBARBER (University of Nebraska, USA) Robust Stability Radii for Distributed Parameter Systems S. TOWNLEY (University of Exeter, UK) Solutions of the ARE in Terms of the Hamiltonian for Riesz-Spectral Systems C. R. KUIPER, H. J. ZWART (University of Twente, The Netherlands) The Non-Equivalence of L2 and L0 Stability for Accelerometer Control Systems K.A. MORRIS (University of Waterloo, Canada) session 2B 16h30-18h30 Boundary Stabilization of Rotating Flexible Systems C. Z. XU, G. SALLET (INRIA-Lorraine, Nancy, France) Note on Controllability of a Rotating Beam W. KRABS (Fachbereich Mathematik der TH Darmstadt, Germany) Sharp Trace Estimates for Waves and Plate Equations by Pseudo-Differential Methods R. TRIGGIANI (University of Virginia, USA) On Filtering of the Hilbert Space-valued Stochastic Process over Discrete-continuous Observations Y. V. ORLOV (Institute of Control Sciences, Moscow, Russia) M. V. BASIN (Moscow Aviation Institute, Russia) 19h00 Reception at INRIA-Sophia-Antipolis theme 3 (suite) partial differential equation approaches 9h00-10h00 Plenary 3.3 The Hilbert Uniqueness Method A. BENSOUSSAN (INRIA-Rocquencourt, France) 10h00-10h30 Break theme 4 frequency domain approaches 10h30-11h30 Plenary 4.1 NehariUs Problem and Optimal Hankel Norm Approximation N. YOUNG (Lancaster University, UK) Parallel Sessions session 3A 11h30-12h30 The Hankel Singular Values of a Distributed Delay Line - A Fredholm Equation Approach L. PANDOLFI (Politecnico di Torino, Italy) Comparison of robustly stabilizing controllers for a flexible beam model with additive, multiplicative and stable factor perturbations J. BONTSEMA (University of Wageningen, Finland) session 3B 11h00-12h30 Boundary Stabilization of the Wave Equation G. WEISS (Weizmann Institute of Science, Israel) Stability Problems for Viscoelastic Systems using Frequency Domain Methods K. B. HANNSGEN, R.-L. WHEELER, O.J. STAFFANS (Helsinki University of Technology, Finland & Virginia Tech., USA) 12h30-14h30 Lunch Parallel Sessions session 4A 14h30-16h00 Some Pseudo-Differential Methods for Controlled P.D.E.Us M. PEDERSEN (The Technical University of Lyngby, Denmark) Stochastic Control Approach to the Control of a forward parabolic equation, reciprocal process and minimum entropy A. BLAQUIERE (Universite Paris VII, France) M. SIGAL-PAUCHARD (Universite du Maine, Le Mans, France) Observability of Hyperbolic Systems with Interior Moving Sensors A. KHAPALOV (International Institute for Applied Systems Analysis, Laxenburg, Austria) session 4B 14h30-16h00 Some Extremal Problems Linked with Identification from Partial Frequency Data D. ALPAY (Ben-Gurion University of the Negev, Beer-Sheva, Israel) L. BARATCHART, J. LEBLOND (INRIA Sophia-Antipolis, France) Approximation of Infinite-Dimensional Discrete Time Linear Systems via Balanced Realizations and an Application to Fractional Filters C. BONNET (Universite de Provence, Marseille, France) A Relaxation Approach for the Hankel Approximation of some Vibrating Structures N. MAlZI (Ecole des Mines de Paris, Sophia-Antipolis, France) 16h00-16h30 Break Parallel Sessions session 5A 16h30-18h00 Robust Output Feedback Control of Distributed Parameter Systems J. S. BARAS (University of Maryland at College Park, USA) On the optimal minimax tuning of controllers for distributed parameter systems S. POHJOLAINEN, M. LAAKSONEN (Tampere University of Technology, Finland) Finite Dimensional Robust Controller Designs via the Gap Metric S. Q. ZHU (Penn State University, U.S.A.) session 5B 16h30-18h00 Exact Controllability of a Model of Multidimensional Flexible Structure J.P. PUEL (Universite d'Orleans, France) E. ZUAZUA (Universidade Complutense, Madrid, Spain) Decay of Solutions of the Wave Equation in a Star-Shaped Domain with Nonlinear Boundary Feedback F. CONRAD, B. RAO (Universite de Nancy I, France) Regional Controllability of Distributed Systems A. EL JAI (IMP/CNRS, Universite de Perpignan, France) A. J. PRITCHARD (University of Warwick, UK) theme 4 (suite) frequency domain approaches 9h00-10h00 Plenary 4.2 Topological Approaches to Robustness M. C. SMITH (University of Cambridge, UK) 10h00-10h30 Break 10h30-11h30 Plenary 4.3 H0 Control Problems using a Frequency Domain Approach A. TANNENBAUM (University of Minnesota, USA) Parallel Sessions session 6A 11h30-12h30 Numerical Computation of Inner Factors for Distributed Parameter Systems D.S. FLAMM, K. KLIPEC (Princeton University, USA) Robust Controller Design for Uncertain Time Delay Systems Z.Q. WANG, S. SKOGESTAD (University of Trondheim, Norway) session 6B 11h30-12h30 Approximate Controllability for Semi-Linear Parabolic Equations J. P. PUEL (Universite d'Orleans, France), C. FABRE (Universite Paris XII,France) & E. ZUAZUA (Universidad Complutense, Madrid, Spain) On the Stabilization of the Wave Equation E.MORGL (Bilkent University, Ankara, Turkey) 12h30-14h30 Lunch 14h30-16h30 Round Table Discussion on Different Approaches to Control of Infinite Dimensional Linear Systems. Chairman and organiser : R.F. CURTAIN 17h00 Close of the conference Buses leave for Nice Airport. LOCATION OF THE CONFERENCE Ecole des Mines Rue Claude Daunesse Sophia-Antipolis - Les Lucioles F-06565 Valbonne Cedex Tel : (33) 93 95 75 40 Fax. : (33) 93 65 43 04 PROCEEDINGS Conference Proceedings will be published by Springer-Verlag after the conference and sent to participants as soon as possible (by October). *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: Ezio Biglieri (biglieri@polito.it) IEEE 1992 INFORMATION THEORY WORKSHOP 2nd Announcement Large Information Theory Workshop Salvador - Bahia - Brazil June 21-26 Sponsored by SBT - {\large Sociedade Brasileira de Telecomunica\c{c}\~{o}es} IEEE - The Institute of Electrical and Electronics Engineers Inc. Announcement The 1992 IEEE Information Theory Workshop will be held at the "Sofitel Quatro Rodas" Hotel, Salvador, Bahia State, Brazil, from Sunday June 21 through Friday June 26. The Hotel is located on the renowned Itapo\~{a} beach on the Atlantic Ocean, just outside old downtown Salvador. The hotel offers excellent accomodations, restaurant, bar and recreational facilities, like golf course, swimming pools, tennis courts. Salvador was the first Brazilian Capital, and is the country's fifth largest city. It is a leading industrial and cultural center. The weather in the region is warm during the southern hemisphere winter with temperatures ranging from 20 C (68 F) to 30 C (86 F). \vspace{.5cm} {\centering \huge Sessions and Organizers\\} \begin{enumerate} \item {\bf Coding and Information Theory for Recording} \begin{itemize} \item {\bf Chris Heegard} - Cornell University, USA \end{itemize} \item {\bf Cryptography} \begin{itemize} \item {\bf James L. Massey} - Swiss Technological Institute, Switzerland \item {\bf Valdemar C. da Rocha Jr.} - Pernambuco Federal University, Brazil \end{itemize} \item {\bf Data Networks} \begin{itemize} \item {\bf Anthony Ephremides} - University of Maryland, USA \item {\bf Luis Felipe M. de Moraes} - Rio de Janeiro Polytechnic Institute, Bra zil \end{itemize} \item {\bf Error Correction Codes} \begin{itemize} \item {\bf Daniel J. Costello Jr.} - Notre Dame University, USA \item {\bf Carlos R. P. Hartmann} - Syracuse University, USA \end{itemize} \item {\bf Shannon Theory} \begin{itemize} \item {\bf Aydano B. Carleial} - National Institute for Space Research, Brazil \item {\bf S\'{e}rgio Verdu} - Princeton University - USA \end{itemize} \item {\bf Signal Processing} \begin{itemize} \item {\bf Odile Macchi} - Centre National de la Recherche Scientifique, France \item {\bf Maurice Bellanger} - Conservatoire National des Arts et Metiers, Fran ce \end{itemize} \item {\bf Source Coding} \begin{itemize} \item {\bf William A. Pearlman} - Rensselaer Polytechnic Institute, USA \item {\bf David Neuhoff} - University of Michigan - USA \end{itemize} \item {\bf Trellis and Block Coded Modulation} \begin{itemize} \item {\bf Ezio Biglieri} - Politecnico di Torino - Italy \item {\bf John B. Anderson} - Rensselaer Polytechnic Institute, USA and German Aerospace Research, Germany \end{itemize} \item {\bf Recent Results} \begin{itemize} \item {\bf Robert A. Scholtz} - University of Southern California, USA \end{itemize} \end{enumerate} \vspace{.5 cm} {\centering \huge Session Talks \\} \vspace{.5cm} \begin{enumerate} \item {\bf Coding and Information Theory for Recording} \begin{itemize} \item {\bf Brian Marcus, Ronald Roth - IBM Almaden, USA \\} Improved Gilbert-Varshamov Bounds for Constrained Systems \item {\bf Tom Fuja, Jian Gu - University of Maryland, USA \\} Construction of Optimal Block Codes for Runlength-Constrained Channels \item {\bf Victor K. Wei, Tuvi Etzion - Bellcore, USA and Technion, Israel \\} On Two-Dimensional Run-Length Limited Codes \item {\bf Andy Popplewell, John J. O'Reilly \\} Runlength Limited Error Control Codes \item {\bf Mario Blaum - IBM Almaden, USA \\} Coding for Magnetic Recording and Disk Arrays \item {\bf Chris Heegard, Mignon Belongie, Nagabhushana Sindhushay - Cornell Uni versity, USA \\} Coding with Variable Length Graphs \end{itemize} \item {\bf Cryptography} \begin{itemize} \item {\bf Rudolph Ahlswede - University of Bielefeld, Germany \\} The Role of Common Randomness in Information Theory and Cryptography \item {\bf Ueli Maurer - ETH Zurich, Switzerland \\} Secret-Key Agreement by Public Discussion Based on Common Information \item {\bf Valdemar C. da Rocha Jr. - University of Pernambuco, Brazil \\} Secret-Key Cryptosystems Based on Algebraic Codes \item{\bf Agnes H. Chan - Northeastern University, Boston, USA \\} On the k-error Linear Complexity Measure for Pseudorandom Sequences \item {\bf James L. Massey - ETH Zurich, Switzerland \\} An Information-Theoretic Formulation of Zero-Knowledge Proofs \end{itemize} \item{\bf Data Networks} \begin{itemize} \item {\bf V. Anantharam - Cornell University, USA \\} Bandwidth Allocation to Burstiness Constrained Flows \item {\bf Yao-Min Chen, Galen Sasaki - University of Texas, USA \\} A Cost and Performance Analysis of Incremental Design for Irregular Torus Topologies \item {\bf Kenneth Vastola - Rensselaer Polytechnic Institute, USA \\} Topological Analysis of Local Multiple Access Networks \item{\bf Pawel Gazdzicki, Ioannis Lambadaris, Ravi R. Mazumdar - Universit\'{e} du Quebec and Concordia University, Canada \\} Asymptotic Behavior of Blocking Probabilities for Large Multirate Erlang Loss Systems \item {\bf M. Sidi, I. Cidon - Technion, Israel \\} \item {\bf A. Ephremides - University of Maryland, USA \\} Problems of Scheduled Access, Admission, and Routing in Packet Radio Networks \item {\bf John Silvester - University of Southern California, USA \\} \end{itemize} \item{\bf Error Correcting Codes} \begin{itemize} \item {\bf Jehoshua Bruck - IBM Almaden Research Center, USA \\} Error Correcting Codes and Neural Networks \item {\bf Rolf Johannesson, Zhe-xian Wan - University of Lund, Sweden \\} On Minimal Convolutional Encoders and the Invariance of their Generalized Constraints Lengths \item {\bf Oliver Collins - John Hopkins University, USA \\} Harnessing the de Bruijn Graph and Setting out to Find the Limits Imposed by Information Flow on Convolutional Decoders \item {\bf Takeshi Hashimoto - University Electro-Communications, Japan \\} On the Coded ARQ with the Generalized Viterbi Algorithm \item {\bf Carlos Moreno - University of Puerto Rico, USA \\} Algebraic Goppa Codes And Exponential Sums \item {\bf Dhiraj Pradhan - University of Massachusetts, USA \\} Application of Block Codes to Built-in Self Test \end{itemize} \item{ \bf Shannon Theory} \begin{itemize} \item {\bf Thomas Cover - Stanford University, USA \\} \item {\bf Rudolph Ahlswede - University of Bielefeld, Germany \\} \item {\bf Te Sun Han - Senshu University, Japan \\} \item {\bf John Kieffer - University of Minnesota, USA \\} \item {\bf Imre Csisz\'{a}r - Hungarian Academy of Sciences, Hungary \\} \item {\bf Edward Van der Muelen - Katholieke Universiteit Leuven, Belgium \\} \end{itemize} \item {\bf Signal Processing} \begin{itemize} \item {\bf R. Forchheimer - University of Link\"{o}ping, Sweden \\} \item {\bf J. Vanderwallen - ESAT- Laboratory/Kul, Belgic \\} \item {\bf F. Taylor - University of Florida, USA \\} \item {\bf M. V. Wickerhauser - Yale University, USA \\} \item {\bf J. Louis Lacoume - CEPHAG; ENSIEG, France \\} \item {\bf Alfred O. Hero - University of Michigan, USA \\} Optimal Estimation of Intensity Parameters for Filtered Poisson Processes \item {\bf J. Favier - CNRS, France \\} \item {\bf J. M. T. Romano, M. G. Bellanger, L. S. Resende - State University of Campinas - Brazil and Conservatoire National des Arts et M\'{e}tiers, France \\} Constrained Adaptive Filtering for Temporal and Spatial Processing \item {\bf L. Almeida - INESC, Portugal \\} \end{itemize} \item {\bf Source Coding} \item {\bf Trellis and Block Coded Modulation} \begin{itemize} \item {\bf G. D. Forney Jr. - Codex Corp., USA \\} On the Hamming Distance Properties of Linear Codes over Groups \item{\bf T. Takata, Y. Yamashita, T. Fujiwara, T. Kasami, S. Lin - Osaka Univer sity, Japan and University of Hawaii, USA \\} Multi-Stage Decoding of Decomposable Block Modulation Codes \item {\bf Amer Hassan - General Electric, USA \\} Trellis coding to reduce adjacent channel interference \item {\bf S. Lin, D. J. Costello, S. Rajpal. L. C. Perez, D. J. Rhee - Universi ty of Notre Dame, USA \\} Multi-Level Concatenated Trellis Coded Modulation \item {\bf S. Benedetto, G. Olmo, P. Poggiolini - Politecnico di Torino, Italy \\} Trellis Coded Polarization Shift Keying Modulation for Coherent Optical Communic ations \item {\bf H. A. Loeliger, T. Mittelholzer - ETH Zurich, Switzerland \\} Convolutional Codes over Groups: Facts and Hopes \end{itemize} \end{enumerate} \vspace{.5cm} Some authors and titles need confirmation \vspace{.5cm} {\centering \huge General Information \\} \vspace{.5cm} For non-residents of Brazil we suggest them to contact the closest VARIG Office\footnote{Italian participants should contact the VARIG office in Milano.} or a Travel Agency and ask special conditions for their air transport. If the participant wants to visit other places in Brazil, such as, Rio de Janeiro, Foz do Igua\c{c}u, S\~{a}o Paulo, Bras\'{\i}lia, Salvador or Manaus we suggest to buy the "Brazil Air Pass" with lower price. During your stay in Salvador, the official Travel Agency of ITW 92 can provide programs for those who will be interested in the "optional tours". \vspace{.5cm} {\centering \huge Workshop Fees \\} \vspace{.5cm} {\centering \begin{tabular}{||l|c|c||} \hline\hline Workshop Fees & Before May 18, 1992 & After May 18, 1992 \\ \hline IEEE/SBT Member & US\$ 200 & US\$ 250 \\ Non-Member & US\$ 250 & US\$ 300 \\ \hline\hline \end{tabular} \vspace{.5cm}} This fee covers refreshments, book of abstracts, reception on Sunday June 21, city tour and transfers from/to airport. %\newpage \vspace{.5cm} {\centering \huge Workshop Full Fees \\} \vspace{.5cm} {\centering \vspace{.5cm} \begin{tabular}{||l|c|c||} \hline\hline Workshop Full Fees & Before May 18, 1992 & After May 18, 1992 \\ \hline IEEE/SBT Member, single room & US\$ 750 & US\$ 800 \\ Non-Member, single room & US\$ 800 & US\$ 850 \\ IEEE/SBT Member, double room & US\$ 650 & US\$ 700 \\ Non-Member, double room & US\$ 700 & US\$ 750 \\ \hline\hline \end{tabular} \vspace{.5cm}} This fee covers room accommodation for the period from Sunday June 21 after dinner to Friday June 26 before lunch and includes five nights plus breakfast, meals (lunch or dinner) during the indicated period at "Sofitel Quatro Rodas", banquet, city tour, transfers from/to airport, reception on Sunday June 21 and registration fee. A reasonable number of rooms has been reserved for the workshop at "Sofitel Quatro Rodas". These rooms will be held only until May 18, 1992, so please make your reservation as soon as possible. All registrations received after May 18,1992 are considered to be late registrations. There is no partial registration fee. Credit cannot be given for late arrival, unused services, unattended events or early termination of attendance. All paid registrations will be confirmed. \vspace{.5cm} {\centering \huge Companions Fees \\} \vspace{.5cm} The companions can participate in the program including accommodation for five nights, plus breakfast, opening cocktail, city tour and close dinner. \vspace{.5cm} {\centering \begin{tabular}{||l|c|c||} \hline\hline Companions Fees & Before May 18, 1992 & After May 18, 1992 \\ \hline Adult companion (more than 12 & & \\ years old), in double occupancy & US\$ 270 & US\$ 320 \\ \hline Child companion (more than 6 & & \\ up to 12 years old), in triple occupancy & US\$ 170 & US\$ 220 \\ \hline\hline \end{tabular} \vspace{.5cm}} {\centering \bf Address of the Hotel \\ Hotel SOFITEL 4 RODAS \\ Telephone 55-71-2499611 \\ Fax 55-71-2496946 \\ Telex (71) 2449 \\} \vspace{.5cm} \newpage {\centering \huge Organizers \\} \vspace{.5cm} Further information about the Workshop may be obtained by contacting one of the organizers. \begin{itemize} \item {\bf Weiler A. Finamore} \begin{itemize} \item Address: CETUC Catholic University of Rio de Janeiro \\ Rua M. S. Vicente, 225 - 22453 Rio de Janeiro, R.J., Brazil \item FAX: 55-21-2945748 \item Phone: 55-21-5299254 \item E-mail: finamore@lncc.bitnet \end{itemize} \item {\bf John B. Anderson} \begin{itemize} \item Address: Inst. F. Nachrichtentechnick Deutch-Luft-und Raumfahrt (DLR) \\ D -8031 Oberpfaffenhofen, Germany \item FAX: 49-8153-281442 \item Phone: 49-8153-281205 \item E-mail: NT1X@DLRVM.bitnet \end{itemize} \item {\bf Ezio Biglieri} \begin{itemize} \item Address: Dipartimento di Elettronica - Politecnico di Torino \\ Corso Duca Degli Abruzzi, 24 I-10129 - Torino - Italy \item FAX: 39-11-5644099 \item Phone: 39-11-5644030 \item E-mail: biglieri@polito.it \end{itemize} \item {\bf Reginaldo Palazzo Jr.} \begin{itemize} \item Address: Department of Communications - State University of Campinas \\ P.O. Box 6101 - 13.081 Campinas - S.P. - Brazil \item FAX: 55-192-391395 \item Phone: 55-192-397750 \item E-mail: palazzo@decom.fee.unicamp.br \end{itemize} \item {\bf Celso de Almeida} \begin{itemize} \item Address: Department of Communications - State University of Campinas \\ P.O. Box 6101 - 13.081 Campinas - S.P. - Brazil \item FAX: 55-192-391395 \item Phone: 55-192-397750 \item E-mail: celso@decom.fee.unicamp.br \end{itemize} \item {\bf Max H. M. Costa} \begin{itemize} \item Address: General Electric Corporate - Research and Development\\ KW-C 610 \\ P.O. Box 8\\ Schenectady, N.Y., 12.301, USA \item FAX: 518-3875299 \item Phone: 518-3875142 \item E-mail: costa@CRD.GE.COM \end{itemize} \end{itemize} \vspace{.5cm} {\centering \huge Registration \\} \vspace{.5cm} Please read carefully the Registration Form before filling it in. Fill in the form fully in typing or handwriting. Send the Registration Form and the payment according to the following procedures. \begin{itemize} \item Non-residents of Brazil are requested to forward completed form and paymen t to: {\centering \bf Max H. M. Costa\\ General Electric \\ Corporate Research and Development\\ KW-C 610 \\ P.O. Box 8\\ Schenectady, N.Y., 12.301, USA\\ Phone: 518-3875142\\ Fax: 518-3875299\\ E-mail: costa@CRD.GE.COM \\} Please, make checks/bank draft payable to: {\centering "Information Theory Workshop"}\\ {\bf Important:} Checks/Bank drafs must be drawn on USA banks or USA branch of non-USA bank. \item Residents of Brazil are requested to forward completed form and payment to: \vspace{.5cm} {\centering \bf Eduarda Oliveira\\ SBT\\ Caixa Postal 38.076\\ 22.452 - Rio de Janeiro - R.J. \\} \vspace{.5cm} Please make checks/bank drafts payable to: "IEEE Information Theory Workshop 1992 - ITW 92" by using the posted data commercial dollar/cruzeiro conv ersion rate. \end{itemize} \newpage \vspace{.5cm} {\centering \huge Registration Form \\} \begin{itemize} \item Name: Mr/Mrs/Miss \\ \item Company/University: \\ \item Full Address: \\ \item Phone/E-mail: \\ \item IEEE Membership:\\ \item SBT Member (Yes/No): \\ \item Hotel Accommodation (Single, Double, Triple):\\ \item Companions' names: \\ \item In case of a double or triple room reservation , the room will be shared w ith: \\ \item Payment Cheque Number/Bank: \\ \item Total US\$: \\ \item Local and Date: \\ \item Signature: \\ \end{itemize} \newpage \begin{center} {\bf APPENDIX} \end{center} \noindent {\bf Discount air travel to 1992 IEEE Information Theory Workshop Salvador (Bahia), Brazil, 21-26 June 1992.} The IEEE Information Theory Society has made arrangements with Grand Prix Journeys (GPA) and Transbrasil Airlines for air travel to the 1992 IT Workshop as follows: \begin{itemize} \item Group travel \begin{itemize} \item Fri 6/19: depart Washington/Dulles 9:30am or New York/JFK 11:45am; nonstop to Brasilia on Transbrasil 797 (new Boeing 767), arrival 10:30pm; connection via Transbrasil 597 to Salvador, 11:55pm-01:30am (6/20). \item Fri 6/26: departure Salvador 9:30pm on Transbrasil 596 to Brasilia, arrival 11:15pm; nonstop on Transbrasil 796 to Dulles, 12:30am-8:00am (6/27), or 1-stop to JFK, arrival 10:30am. \item Cost: {\$}600, plus {\$}18 departure taxes. (Note: If fewer than 15 persons choose this option, then the air cost will be {\$}789 plus taxes in accordance with the provisions for individual travel, below.) \item Connecting travel to/from Dulles/JFK can be arranged by GPA, or by the traveler. \end{itemize} \item Individual travel (any itinerary; worldwide; any dates) \begin{itemize} \item 22{\%} discount from published excursion fares on Transbrasil \item 18{\%} discount from published excursion fares on Varig \item 5{\%} discount from published excursion fares on American or United comparable discounts on other airlines \item Example: New York-Salvador RT, 7-21 day excursion, low season (depart on or before June 20). Published fare: {\$}1011 plus taxes. Discounted fare on Transbrasil: {\$}789 plus taxes. (Note: this fare permits a stopover in Brasilia.) \end{itemize} \end{itemize} Bookings should be made directly with: \begin{center} Grand Prix Journeys, 425 Madison Ave., New York, NY 10017 USA; Tel: +1 (212) 319-8600 or (800) 242-7749; Fax +1 (212) 486-0783 \end{center} as soon as possible, but not later than May 15. You must mention the IT Workshop. Hotel bookings at the Sofitel Quatro Rodas should be made directly with the Workshop organizers. \begin{center} {\bf Excursions} \end{center} GPA is a specialist in Brazilian travel, and will be glad to arrange pre- or post-workshop excursions to Rio de Janiero, Brasilia, Manaus, the Amazon, and so forth. \begin{center}{\bf Credit cards} \end{center} Payment by check is preferred. Payments by credit card will be subject to a small handling fee. \vspace{.5cm} {\centering \huge Supported by \\} \vspace{.5cm} {\centering \Large UNICAMP\\ PUC - RIO \\ IBM - BRASIL \\ CPqD - TELEBR\'{A}S \\ BANESPA \\ VARIG -\large{Official Air Carrier} \\} \end{document} *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: Francois Baccelli INRIA//ORSA/TIMS/SMAI Conference on Applied Probability \documentstyle{article} \title{PRELIMINARY ANNOUNCEMENT\\ INRIA//ORSA/TIMS//SMAI Conference on\\ Applied Probability in Engineering, Computer and Communication Sciences} \author{{\bf JUNE 16-18 1993, PARIS}} \begin{document} \maketitle \noindent For the first time, the Applied Probability Group of ORSA/TIMS will have its meeting in Europe. The conference will be co-organized by INRIA (Institut National de Recherche en Informatique et Automatique), ORSA/TIMS (Operations Research Society of America/The Institute of Management Science) and SMAI (Soci\'et\'e de Math\'ematiques Appliqu\'ees et Industrielles). The general theme of the conference is ``Applied Probability in Engineering, Computer and Communication Sciences''. The objectives are twofold: we wish to bring together researchers working in this field throughout the world and to take advantage of this meeting in order to enhance collaboration between applied probabilists within Europe at large. This meeting will be held on June 16-18, 1993, in Paris, France, during the week that precedes the 22-nd Conference on Stochastic Processes and their Applications, to be held in the Netherlands.\\ \noindent {\bf SUGGESTED TOPICS}\\ The topics of interest include but are not limited to the following list: \begin{itemize} \item Markov Chains \item Point Processes \item Stochastic Geometry \item Stochastic Comparison \item Control of Random Discrete Event Systems \item Markov Decision Processes \item Queueing Networks \item Stochastic Petri Networks \item Modeling of Communication Systems \item Modeling of Manufacturing Systems \item Modeling of Computer Systems \item Statistical Theory of Simulation \item Perturbation Analysis \item Probabilistic Analysis of Algorithms \item Probabilistic Combinatorial Optimization \item Stochastic Scheduling \item Reliability, Risk and Survival Analysis \end{itemize} \noindent {\bf SUBMISSION}\\ Two kinds of submissions are solicited: 1) proposals for invited sessions; 2) contributed presentations for regular sessions. For both kinds of submissions, only abstracts are required. Each proposal for an invited session should include abstracts for all presentations, and a letter from the session organizer commenting on the focus of the session. All submissions will be reviewed by the program committee. Please send 4 copies of the proposals or the abstracts to \begin{center} Fran\c cois Baccelli\\ INRIA Sophia-Antipolis 2004 Route des Lucioles\\ Valbonne 06565 FRANCE\\ Phone: (33) 93 65 77 99, Fax: (33) 93 65 78 58\\ e-mail: baccelli@sophia.inria.fr \end{center} {\bf DEADLINES}\\ \noindent November 1, 92 Submission of invited sessions\\ December 1, 92 Submission of contributed papers\\ February 1, 93 Acceptance notification\\ \noindent {\bf PROGRAM COMMITTEE (tentative)}\\ E. Arjas (Oulu University, Finland)\\ F. Baccelli (INRIA, France, Co-Chair)\\ A. Borovkov (Academy of Sciences, Novosibirsk, Russia)\\ P. Br\'emaud (CNRS, France, Co-Chair)\\ D. Daley (ANU, Canberra, Australia)\\ R. Disney (Texas A\& M University, USA)\\ P. Glynn (Stanford University, USA) \\ A. Hordijk (Leiden University, The Netherlands) \\ B. Hajek (University of Illinois, USA)\\ V. Malyshev (INRIA, France and Moscow, Russia)\\ A. Mandelbaum (Technion, Haifa, Israel) \\ M. Miyazawa (Tokyo University, Japan)\\ E. Pardoux (Universit\'e de Provence, Marseilles, France)\\ M. Reiman (AT\&T Bell Laboratories, Murray Hill, USA)\\ G. Shanthikumar (University of Cal., Berkeley USA)\\ S. Stidham (University of North Carolina, USA)\\ D. Stoyan (Freiberg University, Germany)\\ R. Weber (Cambridge, United Kingdom)\\ D. Yao (Columbia University, New York, USA)\\ \noindent {\bf ORGANIZING COMMITTEE}\\ J. Eldridge, ORSA/TIMS\\ C. Juncker, INRIA\\ M. Simonetti, INRIA\\ \end{document} *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** End of Eletter 51, Part 2 (of 3) E-LETTER on Systems, Control, and Signal Processing ISSUE No. 51, Part 3 of 3; 12 June 1992 Editors: Bradley W. Dickinson bradley@princeton.edu or bradley@pucc.bitnet Eduardo D. Sontag sontag@hilbert.rutgers.edu or sontag@pisces.bitnet Welcome. We remind you that items for posting can be emailed to either of the editors. PLEASE SEND CONTRIBUTIONS, since the eletter can only be useful if everyone participates. A REQUEST: It would be useful if articles are already sent in the format that we use, starting with a "Contributed by:..." and a title centered in the next line. In addition, please provide a 60-character title for the Contents. Thanks! NOTE: if you are using an editor to read this mailing and if at any point you wish to skip to the next article, you can accomplish this by searching for the string: *.** Contents Changes to mailing list Personals: People on the move People going up Awards and Recognitions IEEE Control Systems Society News: Announcement: IEEE Transactions on Control Systems Technology Journals: TOC: Mathematics of Control, Signals, & Systems 5,No.3 (1992) Forthcoming papers, MCSS TOC: Circuits, Systems, and Signal Processing 11,3 (1992) TOC: SIAM Journal on Control and Optimization 30,4 (July 1992) TOC: SIAM Journal on Control and Optimization 30,5 (Sep 1992) TOC: volumes 168, 169, 170, 171, and 172 of LAA LAA: Special Issue, Workshop on Generalized Inverses New Journal: Stochastic Optimization and Design New journal: Asia-Pacific Engineering Journal-- EE Conferences: Variable Structure and Lyapunov Control, 7-9 Sept 92, Sheffield Systems and Control: Themes for the 90's, 29-30 June 92, London 10th Int. Conf. on Analysis and Optimization of Systems IEEE 1992 Information Theory Wkshp. 21-26 June 92, Brazil Applied Probability, June 16-18 1993, Paris -------> (Start of Part 3) Large Scale Scientific Computation, 8-31-92, Bielefeld IEEE 1993 ICASSP, April 27-30, 1993, Minneapolis IEEE Fuzzy Systems, San Francisco, March 28 - April 1, 1993 New Books Published: The H-Infinity Control Problem: A State Space Approach Faculty Positions Available/Wanted: Positions Available ECE, NEWCASTLE Position Wanted Post-Doc Speech Research at Bellcore UPATE ON SCAD DATABASE Reports & Software available Nonlinear_System_Toolbox Available Control Information Database and Newsletters at Glasgow Preprints/Software available via anonymous ftp from Stanford Reports by Stephen Boyd et al. Misc: Gradute Students Wanted, video, Ankara, Turkey Proper symbols for emotions in email :-) *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: A. Bunse-Gerstner and V. Mehrmann Announcement for Interdisciplinary Course Interdisciplinary Short Course on LARGE SCALE SCIENTIFIC COMPUTATION August 31 -- September 4, 1992 Universitaet Bielefeld LSSC in Mechanics U. Langer (Techn. Univ. Chemnitz) LSSC in Chemistry J. Hinze, H.J. Werner (Univ. Bielefeld) LSSC in Physics F. Karsch (Univ. Bielefeld/ KFA Juelich) LSSC in Aerodynamics D. Haenel (Univ. Duisburg) LSSC in Hydrology A. Peters (IBM Heidelberg) LSSC in Telecommunication U. Krieger (Bundespost-Telekom, Darmstadt) Iterative Methods G.H. Golub (Stanford Univ.) (Symmetric Systems) Iterative Methods R. Freund (Bell Labs) (Unsymmetric Systems) Direct Methods I. Duff (Rutherford Labs) Iterative Methods B. Parlett (Univ. Calif. Berkeley) (Eigenvalue Problems) Multigrid Methods G. Wittum (Univ. Heidelberg) Semi-Iterative Methods M. Eiermann (Univ. Karlsruhe) LAPACK Ch. Bischof (Argonne Ntl. Laboratory) Parallel Architectures J.F. Hake (KFA Juelich) _____________________________________________________________________________ Scientific Coordination: A. Bunse-Gerstner V. Mehrmann Fachbereich fuer Mathematik Fakultaet fuer Mathematik und Informatik Universtaet Bremen Universitaet Bielefeld _______________________________________________________________________________ Registration: FSP Mathematisierung Universitaet Bielefeld, Postfach 8640, D-4800 Bielefeld 1, Tel.: (0521) 106-4764, Fax.: (0521) 106-4743, e-mail: fsp@math5.mathematik.uni--bielefeld.de no registration fee *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: Aggelos Katsaggelos IEEE 1993 International Conference on Acoustics, Speech and Signal Processing (ICASSP) April 27-30, 1993 Minneapolis Convention Center Minneapolis, Minnesota CALL FOR PAPERS Sponsored by the Institute of Electrical and Electronics Engineers Signal Processing Society, ICASSP-93 is the eighteenth in a series of international conferences presenting work in experimental and theoretical signal processing, speech, and acoustics. TO SUBMIT A PROPOSAL a) Prepare a 2-3 page summary of the paper including figures and references. b) Complete the Paper Summary Cover Sheet. c) Send FIVE copies of the summary and Paper Summary Cover Sheet to: Ms. Janice Jopke CCS Associates 881 Countryside Drive Eden Prairie, MN 55346 USA The deadline for submission is August 3, 1992. A detailed Call-For-Papers and the Paper Summary Cover Sheet appeared in the Proceedings of ICASSP-92, was mailed to all the SP Society members and will appear in the May, June, July and August issues of the IEEE Trans. on Signal Processing, the July issue of the IEEE Trans. on Image Processing, and the July issue of the Signal Processing Magazine. Additional copies can be obtained by contacting the publicity chairman: Prof. Aggelos K. Katsaggelos Northwestern University Department of EECS Evanston, IL 60208-3118 Phone: (708) 491-7164 FAX: (708) 491-4455 e-mail: aggk@eecs.nwu.edu *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: the editors CALL FOR PAPERS SECOND IEEE INTERNATIONAL CONFERENCE ON FUZZY SYSTEMS FUZZ-IEEE'93 San Francisco, California March 28 - April 1, 1993 In recent years, increasing attention has been devoted to fuzzy-logic approaches and to their application to the solution of real-world problems. The Second IEEE International Conference on Fuzzy Systems (FUZZ-IEEE '93) will be dedicated to the discussion of advances in: * Basic Principles and Foundations of Fuzzy Logic * Relations between Fuzzy Logic and other Approximate Reasoning Methods * Qualitative and Approximate-Reasoning Modeling * Hardware Implementations of Fuzzy-Logic Algorithms * Learning and Acquisition of Approximate Models * Relations between Fuzzy Logic and Neural Networks * Applications to * System Control * Intelligent Information Systems * Case-Based Reasoning * Decision Analysis * Signal Processing * Image Understanding * Pattern Recognition * Robotics and Automation * Intelligent Vehicle and Highway Systems CONFERENCE ORGANIZATION This conference is sponsored by the IEEE Neural Networks Council, in cooperation with: International Fuzzy Systems Association North American Fuzzy Information Processing Society Japan Society for Fuzzy Theory and Systems. The conference includes tutorials, exhibits, plenary sessions, and social events. ORGANIZING COMMITTEE GENERAL CHAIR: Enrique H.Ruspini Artificial Intelligence Center SRI International PROGRAM CHAIR: Piero P. Bonissone General Electric CR&D PROGRAM ADVISORY BOARD: J. Bezdek E. Sanchez E. Trillas D. Dubois Ph. Smets T. Yamakawa G. Klir M. Sugeno L.A. Zadeh H. Prade T. Terano FINANCE: R. Tong (Chair) R. Nutter PUBLICITY: H. Berenji (Chair) B. D'Ambrosio R. Lopez de Mantaras T. Takagi LOCAL ARRANGEMENTS: S. Ovchinnikov TUTORIALS: J. Bezdek (Chair) H. Berenji H. Watanabe EXHIBITS: M. Togai L. Valverde W. Xu T. Yamakawa TUTORIAL INFORMATION The following tutorials have been scheduled: Introduction to Fuzzy-Set Theory, Uncertainty, and Fuzzy Logic Prof. George J. Klir, SUNY Fuzzy Logic in Databases and Information Retrieval Prof. Maria Zemankova, NSF Fuzzy Logic and Neural Networks for Pattern Recognition Prof. James C. Bezdek, Univ. of West Florida Hardware Approaches to Fuzzy-Logic Applications Prof. Hiroyuki Watanabe, Univ. North Carolina Fuzzy Logic and Neural Networks for Control Systems Dr. Hamid R. Berenji, NASA Ames Research Center Fuzzy Logic and Neural Networks for Computer Vision Prof. James Keller, Univ. of Missouri CALL FOR PAPERS In addition to the papers related to any of the above areas, the program committee cordially invites interested authors to submit papers dealing with any aspects of research and applications related to the use of fuzzy models. Papers will be carefully reviewed and only accepted papers will appear in the FUZZ-IEEE '93 Proceedings. DEADLINE FOR PAPERS: AUGUST 3, 1992 Papers must be received by August 3, 1992. Six copies of the paper must be submitted. The paper must be written in English and its length should not exceed 8 pages including figures, tables, and references. Papers must be submitted on 8-1/2" x 11" white paper with 1" margins on all four sides. They should be prepared by typewriter or letter-quality printer in one column format, single-spaced, in Times or similar type style, 10 points or larger, and printed on one side of the paper only. Please include title, author(s) name(s) and affiliation(s) on top of first page followed by an abstract. FAX submissions are not acceptable. Please send submissions prior to the deadline to: Dr. Piero P. Bonissone General Electric Corporate Research and Development Building K-1, Room 5C32A 1 River Road Schenectady, New York 12301 FOR ADDITIONAL INFORMATION REGARDING FUZZ-IEEE'93 PLEASE CONTACT: Meeting Management 5665 Oberlin Drive Suite 110 San Diego CA 92121 Tel. (619) 453-6222 FAX (619) 535-3880 *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: Anton A. Stoorvogel A new book has recently been published in the Prentice-Hall international series in systems and control engineering (ISBN 0-13-388067-2). "THE H-INFINITY CONTROL PROBLEM: A STATE SPACE APPROACH" Anton Stoorvogel PREFACE The H-infinity norm as a measure has been thoroughly embedded in control theory during the last few years. Although the H-infinity norm has been used in control for a long time (a concept like bounded real is nothing else than an H-infinity norm bound), there was a gigantic surge in research efforts towards the minimization of the \HI norm of the closed loop system in the last 10 years. A fairly complete solution is now available. This book tries to bring the reader up to date with respect to the, in our view, most elegant solution to the H-infinity control problem: the state space approach. This book contains numerous references towards other approaches to this theory which the reader can use as a starting point for further research. We have tried to start this book at a basic level with the prerequisites being graduate level courses on linear algebra and state space systems. On the other hand, we included the most general solutions available at the time this book was written. At some times this presented a trade-off and we refer to the literature for the intuition behind some of the abstract concepts introduced in this book. TABLE OF CONTENTS Preface v 1 Introduction 1 1.1 Robustness analysis 1 1.2 The H-infinity control problem 3 1.3 Stabilization of uncertain systems 4 1.4 The graph topology 6 1.5 The mixed-sensitivity problem 8 1.6 Main items of this book 10 2 Notation and basic properties 17 2.1 Introduction 17 2.2 Linear systems 17 2.3 Rational matrices 22 2.4 Geometric theory 24 2.5 The Hardy and Lebesgues spaces 29 2.6 (Almost) disturbance decoupling problems 39 3 The regular full-information H-infinity control problem 47 3.1 Introduction 47 3.2 Problem formulation and main results 48 3.3 Intuition for the formal proof 52 3.4 Solvability of the Riccati equation 55 3.5 Existence of a suitable controller 63 4 The general full-information H-infinity control problem 66 4.1 Introduction 66 4.2 Problem formulation and main results 67 4.3 Solvability of the quadratic matrix inequality 71 4.4 Existence of state feedback laws 72 4.5 The design of a suitable compensator 77 4.6 A direct-feedthrough matrix from disturbance to output 80 4.7 Invariant zeros on the imaginary axis 84 4.8 Conclusion 89 5 The H-infinity control problem with measurement feedback 91 5.1 Introduction 91 5.2 Problem formulation and main results 95 5.3 Reduction of the original problem to an almost disturbance decoupling problem 100 5.4 The design of a suitable compensator 106 5.5 Characterization of achievable closed-loop systems 107 5.6 No assumptions on any direct-feedthrough matrix 112 5.7 Conclusion 118 6 The singular zero-sum differential game with stability 120 6.1 Introduction 120 6.2 Problem formulation and main results 121 6.3 Existence of almost equilibria 125 6.4 Necessary conditions for the existence of almost equilibria 131 6.5 The regular differential game 133 6.6 Conclusion 137 7 The singular minimum entropy H-infinity control problem 139 7.1 Introduction 139 7.2 Problem formulation and results 140 7.3 Properties of the entropy function 142 7.4 A system transformation 147 7.5 (Almost) Disturbance Decoupling and minimum entropy 150 7.6 Conclusion 152 8 The finite horizon H-infinity control problem 154 8.1 Introduction 154 8.2 Problem formulation and main results 155 8.3 Completion of the squares 158 8.4 Existence of compensators 162 8.5 Conclusion 165 9 The discrete time full-information H-infinity control problem 166 9.1 Introduction 166 9.2 Problem formulation and main results 168 9.3 Existence of a stabilizing solution of the Riccati equation 172 9.4 Sufficient conditions for the existence of suboptimal controllers 183 9.5 Discrete algebraic Riccati equations 186 9.6 Conclusion 189 10 The discrete time H-infinity control problem with measurement feedback 190 10.1 Introduction 190 10.2 Problem formulation and main results 192 10.3 A first system transformation 195 10.4 The transformation into a disturbance decoupling problem with measurement feedback 200 10.5 Characterization of all suitable controllers and closed-loop systems 202 10.6 Conclusion 204 11 Applications 205 11.1 Introduction 205 11.2 Application of our results to certain robustness problems 205 11.3 Practical applications 214 11.4 A design example: an inverted pendulum on a cart 217 12 Conclusion 226 12.1 Summary of results obtained 226 12.2 Open problems 230 12.3 Conclusion of this book 233 A Preliminary basis transformations 235 A.1 A suitable choice of bases 235 A.2 The quadratic matrix inequality 243 B Proofs concerning the system transformations 249 B.1 Proof of lemma 5.4 249 B.2 Proof of lemma 5.5 252 Bibliography 260 Index 274 *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: Carlos E. de Souza (eeced@cc.newcastle.edu.au) Faculty Positions at The University of Newcastle, Australia FACULTY POSITIONS AVAILABLE DEPT. ELECTRICAL & COMPUTER ENG. - UNIVERSITY OF NEWCASTLE, Australia CHAIR OF COMPUTER ENGINEERING (Position No. A52/92) Applications are invited from suitably qualified candidates to fill the position of Professor of Computer Engineering. The Department consists of 14 academic staff and 12 technical and secretarial support staff. In addition to the advertised chair, there are chairs in Electrical Engineering, Microelectronics and Power Systems. The Department has a Special Research Centre in Industrial Control Science, which employs its own support staff and attracts a number of visiting academics. The Department and the Centre have approximately 20 graduate students and receive substantial funding for their research. In the computer engineering field, the current areas of concentration are massively parallel systems, special purpose architectures, VLSI and real-time software design. The computing equipment within the Department includes a network of Apollo workstations, a number of smaller machines such as IBM-PC compatibles and Apple Macintoshes, and a variety of in-house constructed microprocessor boards. Members of the Department also have access ot the University Computing Centre's VAX and SUN machines as well as the Faculty of Engineering's network of Sony workstations. It is expected that applicants will have a distinguished record of research and/or substantial industrial development work in the areas of computer engineering or related fields. The applicant is expected to show leadership in research, teaching and industrial interaction in computer engineering. The Professor will have primary responsibility for all computer engineering activities within the Department. Professors have the right of limited private practice. The salary for this position is $Aust 73,800, expected to rise to $Aust 77,900 in August 1992 (1 $Aust ~= $US 0.75). The University reserves the right to fill the chair by invitation or to make no appointment. Additional information may be obtained from Professor A.W. Roberts, Director of the School of Engineering, Tel. (49) 21 6067, Fax (49) 21 6021. Applications close 29 May 1992. LECTURER (Position No.A50/92) The successful applicant will be required to undertake lecturing and research in the areas of Computer Engineering and/or Electronics and/or Communications or a related relevant area. Applicants must have: A Ph.D. or equivalent qualification; A record of significant research capability and/or development work in the areas of Computer Engineering and/or related areas as shown above. Teaching experience at University level and a broad understanding of the field of Computer Engineering are desirable. Lecturers have the right of limited private practice. Salary: In the range $Aust 39,463 - $Aust 47,150 (1 $Aust ~= $US 0.75). Additional information may be obtained from Dr R.E. Betz, Head of Department, Tel. (49) 21 6091, Fax (49) 60 1712. Applications close 1 May 1992. GENERAL INFORMATION: Written applications quoting the appropriate position number (to be shown also on the front of the envelope) and including the name, addresses and telephone numbers of three referees should be sent to: Deputy Director (Recruitment), The Staff Office, The University of Newcastle, NSW 2308, Australia. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: qix@roma.eng2.uconn.edu (Xiaofeng Qi) POSITION WANTED I am graduating this summar as a Ph.D. in Electrical Engineering, from the Dept. of Electrical & Systems Engineering, Program of Control and Communications Systems, The University of Connecticut. I am seeking faculty (preferred) or postdoctor positions in adaptive signal processing, pattern recognition and robust control of complex systems using parallel learning algorithms (e.g. Genetic Algorithms, Neural Networks). I have a solid background in stochastic processes theory and research experience in parallel learning algorithm (e.g. neural networks, Bayesian networks) and stochastic global optimization algoritms. Currently I am a graduate research assistant to Dr. Francesco Palmieri (Sponsered by NSF grants to Palmieri) and working on continuous space genetic algorithms --- a class of robust and parallel stochastic search algorithms that has found rapidly growing applications in the past decade. A series of original and interesting results have been obtained and presented in various conferences (CISS92, Princeton, IJCNN92, etc.). I would like to form a solid ground for population-oriented search algorithms in general, using tools such as weak convergence of stochastic processes and large deviations theory. I am currently applying these algorithms to robust control problems, and am looking forward to applying these robust techniques to more general non-parametric signal processing problems. I also have a considerable amount of experience in teaching with full/partial responsibility, and have twice been ranked No.1 in teaching evaluations by the department. For my c.v. and publications please contact me at (203)487-1087 (home) or (203)-486-1823, or through email: qix@roma.eng2.uconn.edu. For references please call Prof. Francesco palmieri (major advisor) at (203)486-2192, Prof. Yaakov Bar-Shalom at (203)486-4823, Prof. Peter Willett at (203)486-2195, or Prof. Robert Northrop at (203)486-2233. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: rashid@thumper.bellcore.com (Rashid Ansari) Post-Doc/Visiting-Scientist Position in Speech Research at Bellcore The Speech and Security Research Department at Bell Communications Research (Bellcore) has available a post-doctoral or visiting- scientist position in the field of speech analysis research. The appointment would be for a term of approximately two years. We view this position as potentially of interest to new Ph.D.'s as well to established researchers who might benefit from a temporary displacement to an environment which is technically stimulating without the administrative burdens of their home institution. While we currently view the position as limited term, the possibil- ity of an eventual permanent appointment is not excluded. Current work in the Speech and Security Research Department in- cludes research in text-to-speech synthesis (TTS), speech recogni- tion (SR), and speaker-identity verification (SIV), as well as in non-speech security topics. As a research lab owned by the seven Regional "Bell" telephone companies, Bellcore's work targets appli- cations relevant to provision of local-exchange telephone services. One of the projects in our Department, for example, is aimed at al- lowing the programming by voice of advanced network features such as speed dialing, call forwarding, etc. Many desirable applications in TTS, SR, and SIV cannot yet be sup- ported by the technology, at least in the robust, user-friendly, form required for telephone-network services. Thus in addition to the application-specific engineering work we do, we also try to deepen understanding of the basic underlying science in ways likely to lead to breakthroughs in capabilities in the speech technolo- gies. The position we currently have open is for someone with the capability of making fundamental advances in speech science, ad- vances that will directly support our ability to improve the per- formance of SR, TTS, or SIV systems. If you believe you have the background and capabilities we are looking for, please forward a resume to the address below. In ad- dition, we require a 3-5 page research proposal outlining the prob- lem you propose to attack, explaining how your background qualifies you to perform this research with good probability of success, and outlining what improvements in one or more of the technologies (SR, TTS, SIV) can be expected as a result of your research. If you wish, you may submit a paragraph-or-two summary of the research you propose to do before investing time in the detailed proposal; we will let you know promptly whether your interests match our needs sufficiently to make it worthwhile to proceed. Locational information: our department is housed at Bellcore's Morris Research and Engineering Center, located 30 miles west of New York City in a pleasant, uncongested area south of Morristown, NJ. Much of the surrounding countryside is rural. Please send resumes and proposals (either paper or email), or re- quests for additional information, to: Dan Kahn Director, Speech Analysis and Synthesis Research Group Bell Communications Research - Room 2E-268 Morristown, NJ 07962-1910 (201) 829-4522 dk@bellcore.com *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by Raimund J. Ober UPDATE ON SCAD DATABASE -- ******************************************************************************* #### #### ## ##### # # # # # # # #### # # # # # # # ###### # # # # # # # # # # #### #### # # ##### Systems and Control Archive at Dallas ftp address: ftp.utdallas.edu IP number: (129.110.10.11) IMPORTANT: for technical reasons the IP number for the next few weeks is: 129.110.10.1 queries: ober@utdallas.edu ****************************************************************************** New contents: ============= NEW DIRECTORY !!!!!!!!!!!! nonlineartoolbox: ================= contains the Nonlinear_Systems_Toolbox, a MATLAB/S based toolbox for the design and simulation of controllers and observers for nonlinear systems, (up to cubic terms). The toolbox was provided by Art Krener. See seperate announcement in this eletter for more information. books: ====== subdirectory 'khalil' contains corrections of the book Nonlinear Systems Hassan K. Khalil Macmillan, 1992 The corrections are given in the file errata.tex which is a LaTex file. If you don't use LaTex, you may disregard the LaTex symbols and still get all the corrections. eletters: ========= - eletter issues: 50 cacsdletters: ============= - OPEN CACSD issues: volume 1 number 4: cacsdv1n4 volume 1 number 5: cacsdv1n5 The following paper related to OPENCACSD is now available in the subdirectory cacsdletters: H.A. Barker, M. Chen, P.W. Grant, C.P. Jobling and P. Townsend An Open Architecture for Computer-Assisted Control Engineering Open systems are currently being used successfully in many areas of information technology. This paper presents some guiding principles for the design of open systems suitable for computer-assisted control engineering. Some possible architectures are considered and an assessment is made of the available technologies which might be suitable for the basis of an open environment for computer-assisted control engineering. An analogy is made with the requirements for computer-assisted software engineering, for which a reference model has already been developed, and it is concluded that such a model might well provide a clear definition of what is needed in computer-assisted control engineering. submitted: 23 March 1992 filename: refmodel.ps.Z (compressed postscript file) preprints: ========== R. Ober and Y. Wu: Asymptotic stability of infinite dimensional discrete-time balanced realizations (oberwu.dis.dvi.Z) a preprint containing a stability analysis of infinite dimensional discrete-time balanced realizations. submitted to SCAD: 1 May 1992 to appear in: SIAM J. Optimization and Control compressed dvi file The following new report from the Systems and Control Center at Rutgers can now be found in the subdirectory preprints/syconreports: filename: sycon-92-01.ps.Z (compressed dvi file) Sycon report 92-03, May 1992: "For neural networks, function determines form," by Francesca Albertini and Eduardo D. Sontag (28+i pp) Abstract: This paper shows that the weights of continuous-time feedback neural networks are uniquely identifiable from input/output measurements. Under very weak genericity assumptions, the following is true: Assume given two nets, whose neurons all have the same nonlinear activation function $\sigma $; if the two nets have equal behaviors as ``black boxes'' then necessarily they must have the same number of neurons and ---except at most for sign reversals at each node--- the same weights. shellscripts: ============ This directory contains at the moment two shellscripts (provided by E. Sontag) that might be of use in using SCAD. input lets you submit files to SCAD in an easy way inbox shows the content of scadinputs . *********** Remember to send your tech reports and other material! ********* How to access scad: =================== Scad can be accessed using ftp. The ftp address is: ftp ftp.utdallas.edu (IP number: 129.110.10.11 (129.110.10.1 for the time being) You simply type: ftp ftp.utdallas.edu or: 129.110.10.11 (129.110.10.1 for the time being) When asked for your name, type: anonymous When asked for your password, type your emailaddress: me@mymachine.myuniversity To get to scad type: cd pub/scad To get more info about scad get the README file and examine it on your machine: get README To see the directories in scad type: dir To change to (e.g.) conferences: cd conferences To see the subdirectories: dir To change to the CDC91 subdirectory: cd 91cdc-prog To examine this directory: dir To get a file, type e.g.: get AdvPrgmFinal-Wed.txt To finish the session: quit What follows is an example of such a session: ftp ftp.utdallas.edu Connected to ASPEN.UTDALLAS.EDU. 220 aspen.utdallas.edu FTP server (Version 5.64) ready. Name (ftp.utdallas.edu:joe): anonymous 331 Guest login ok, please send your e-mail address as a password. Password: 230 Guest login ok, access restrictions apply. ftp> cd pub/scad/conferences/91cdc-prog 250 CWD command successful. ftp> get README 200 PORT command successful. 150 Opening ASCII mode data connection for README (77 bytes). 226 Transfer complete. local: README remote: README 79 bytes received in 0.04 seconds (1.9 Kbytes/s) ftp> get AdvPrgmFinal-Wed.txt 200 PORT command successful. 150 Opening ASCII mode data connection for AdvPrgmFinal-Wed.txt (44311 bytes). 226 Transfer complete. local: AdvPrgmFinal-Wed.txt remote: AdvPrgmFinal-Wed.txt 45857 bytes received in 7.3 seconds (6.1 Kbytes/s) ftp> get AdvPrgmFinal-Th.txt 200 PORT command successful. 150 Opening ASCII mode data connection for AdvPrgmFinal-Th.txt (42454 bytes). 226 Transfer complete. local: AdvPrgmFinal-Th.txt remote: AdvPrgmFinal-Th.txt 43909 bytes received in 20 seconds (2.1 Kbytes/s) ftp> get AdvPrgmFinal-F.txt 200 PORT command successful. 150 Opening ASCII mode data connection for AdvPrgmFinal-F.txt (42111 bytes). 226 Transfer complete. local: AdvPrgmFinal-F.txt remote: AdvPrgmFinal-F.txt 43571 bytes received in 7 seconds (6.1 Kbytes/s) ftp> quit MORE INFO: There is README file in /pub/scad which contains more info on how to submit material to SCAD. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*. Contributed by: Arthur J. Krener (ajkrener@ucdavis.edu) Nonlinear_System_Toolbox AVAILABLE Dear Colleague, There is a revised Version 0.5 of the Nonlinear_System_Toolbox, a MATLAB/S based toolbox for the design and simulation of controllers and observers for nonlinear systems, (up to cubic terms). It corrects the nasty bug in matche3.m. I am also making it available by telnet to assist in the reseach and development of nonlinear methodologies. This effort has been supported in part by the AFOSR. This package is still under active development and expansion. If you wish to be notified when later versions are available, please notify me by email, ajkrener@ucdavis.edu If you find bugs or have comments and/or suggestions please send them to the same e-address. Please send me p/reprints of your work that uses this package. Sincerely yours, Arthur J. Krener Currently the package consists of 3 directories, Nonlinear_System_Toolbox Simulab_Cubic_Blocks Matlab_Data_Files The Nonlinear_System_Toolbox contains MATLAB M-files and MEX files saved as text and requires MATLAB and Control_SystemToolbox. The Simulab_Cubic_Blocks contains SIMULAB M-files saved as text and requires SIMULAB. The Matlab_Data_Files are data and solutions of several demonstation problems. To get started read the Read_Me files in Nonlinear_System_Toolbox and run the dmo_.... files in Simulab_Cubic_Blocks. This requires MATLAB, Control_SystemToolbox and SIMULAB (SIMULINK). These directories are located on turing.ucdavis.edu under the user identification ajk and protected by the password nonsys The IP address for turing is: 128.120.22.1 These are Copyright (c) 1991-92 by A. J. Krener and UC Regents. All rights reserved. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: Donald Ballance (D.Ballance@uk.ac.glasgow) Title for Contents: Control Information Database and Newsletters Control Information Database and Newsletters Donald Ballance, Dept. Mechanical Engineering, University of Glasgow, Glasgow. G12 8QQ. email: D.Ballance@uk.ac.glasgow The University of Glasgow has been awarded a contract by the U.K. Science and Engineering Research Council to setup and run a computer database, accessible via JANET, to "facilitate information dissemination within the Control community". The purpose of the Control Information Database is to encourage contacts between different control groups within the UK academic community and with industry, and to provide a central place for information exchange and the storage of useful items. In addition to storing the information in the database a newsletter is distributed approximately once per month and a mail burst list is maintained whereby individuals can request help on particular topics. The relevant addresses for these mailing lists are: Newsletter Subscriptions: control-news-request@uk.ac.gla.eng.ctrl Newsletter Contributions: control-news@uk.ac.gla.eng.ctrl Helpline Subscriptions: helpline-request@uk.ac.gla.eng.ctrl Helpline Contributions: helpline@uk.ac.gla.eng.ctrl The following items of information are held in the database. * A mirror of the SCAD directories at Dallas. * List of Universities, groups, and people involved with control and related topics (i.e., identification, modelling, fault detection, etc.) * Details of Seminars, Conferences, Workshops, Vacation Schools etc. and calls for papers. * Sources for programs and algorithms useful in control. e.g., Matlab routines, discussion of problems with software etc. * The model library being developed at Swansea. * Archives of some electronic newsletters. This includes the E-letter on Systems, Control, and Signal Processing, the Matlab Users Group newsletters, and the OPENCACSD newsletter. * Information about other sources of information on Janet and about how to access other networks through various gateways. * Job vacancies. * List of Journals relevant to Control Engineering. * Information from the professional bodies (IEE, IEEE, Inst. MC, ASME, Inst. Mech. Eng., etc.) * List of visiting Students/Research Fellows willing to give seminars. * News from SERC and other funding organisations about applications for grants. Contributions for all areas of the database are being actively sought so please send contributions to: archive-management@uk.ac.gla.eng.ctrl Accessing the Database ====================== There are four main ways of accessing the information in the database: * By sending an electronic mail message to the database machine requesting information about a particular topic, or requesting a particular file to be sent. For further details send a mail message with the single word "help" on a line in the body of the message to archive-server@uk.ac.gla.eng.ctrl. * By transferring files over JANET using the NIFTP protocol. Username: guest, Password: your e-mail address. The file ls-lR.Z contains a compressed directory listing of all the files in the database. * Accessing the database via anonymous ftp from a machine with TCP/IP access to the Glasgow University Ethernet. This access should be available to all users connected to the Internet. (Internet Name: dodo.ctrl.eng.gla.ac.uk, Internet number: 130.209.160.14) Username: anonymous, Password: your e-mail address. * By directly logging into the database machine over the JANET network and by looking at files directly. (JANET DTE: 000071105002, Internet Number: 130.209.160.14) Username: guest, Password: control. For further information in the Control Information Database please send an e-mail to archive-info@uk.ac.gla.eng.ctrl with details of the information you require. Problems should be mailed to: archive-management@uk.ac.gla.eng.ctrl. ====================================================================== Please Note that the address of the database will change shortly from uk.ac.gla.eng.ctrl to uk.ac.gla.mech, however the Internet number and the JANET DTE should remain the same. ====================================================================== *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: ragu@isl.stanford.edu (Venkataramanan Balakrishnan) Preprints/Software available via anonymous ftp Some technical preprints and research software from Stephen Boyd's research group at the Electrical Engineering Department at Stanford University are now available via anonymous ftp to isl.stanford.edu. The files are organized more or less along the lines suggested by Pete Stewart in a recent NANET message. /pub/boyd contains, among other things: book: Errata for "Linear Controller Design: Limits of Performance", by Boyd and Barratt. msd: Matlab and C source for minimum stability degree of parameter dependent linear systems via a branch and bound algorithm (described in a paper in the reports directory). Also C source for a generic branch and bound algorithm. qdes: Sun 3 & 4 binaries for qdes (a simple proof-of-concept code for controller design convex optimization using the Q (ie Youla) parametrization), supporting Matlab scripts, lots of documentation, and many examples (including the qdes source for all examples that have appeared in publications). reports:Postscript preprints on topics such as: global optimization in control system design & analysis; closed-loop convex formulation of singular value loop shaping; optimization and control of rapid thermal processing systems; 1992 ACC preprints dealing with systems with structured perturbations; computing the worst-case peak gain of a system with structured perturbations ... *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: Stephen Boyd ******Talk and report available via anonymous ftp***** TITLE: Convex optimization problems arising in controller design (given at SIAM conf optimization, 5/11/92) AUTHOR: S. Boyd ------------------------------------------------------------------ TITLE: Method of Centers for Minimizing Generalized Eigenvalues AUTHORS: S. Boyd and L. El Ghaoui KEY WORDS: quasiconvex nondifferentiable optimization, generalized eigenvalues, linear fractional programming, analytic center, method of centers, interior point method, logarithmic barrier, Newton algorithm, path-following method, ellipsoidal approximations. ------------------------------------------------------------------ HOW TO GET THEM: ftp into isl.stanford.edu; log in as anonymous; give your email address as password, set ftp to binary mode, cd pub/boyd/reports and get the files gevc.ps.Z, siam_talk.ps.Z, which are compressed postscript files. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by Levent Onural onural@trbilun.bitnet GRADUTE STUDENTS WANTED FOR MS AND PHD Graduate students are wanted to take part in various research projects centered around video compression and related topics. This includes new digital video transmission techniques as well as low bit rate transmission for videophone. Mobile video communications is also of interest. New directions related even weakly to these topics are also under investigation. The department is already equipped with many SUN workstations and anSR151 full option image processor. The image processing lab is undergoing a major upgrade: a Silicon Graphics Power Series IRIS 4D/310 has just arrived in March 1992, and there will be new workstations and professional video equipment and interfaces interconnected to the existing system in 1992. Candidates for MS and/or PhD are welcome. Those candidates who are already familiar with image sequence processing and coding are strongly encouraged to apply. Candidates must meet the general departmental requirements to enter the graduate programs and/or to be appointed as assistants. On campus housing may be available for those who are appointed as assistants. The language of instruction is English throughout the university. Examples of some immediate research topics are listed below: * Signal processing techniques applied to the storage, transmission and regeneration of holographic signals. * Non-linear compression techniques for very low bit rate video coding. * Vision based automated cruising. * Compression and transmission techniques for stereoscopic video. * Texture modelling and classification using Cellular Automata Machine * Hyerarchical Morphological Filtering techniques for more efficient document compression. * Image and video databases Please send resume and names of three references to: Dr. Levent Onural, Electrical and Electronics Engineering Department, Bilkent University, TR-06533 Ankara, Turkey. FAX: +90 4 2664127, email: onural@trbilun.bitnet Applications before June 1, 1992 will receive full consideration. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by: the editors Proper symbols for emotions in email :-) :-) smile :'( cry :-O yell :( frown ;) wink >:-< anger ;^) sarcastic smile (^; wry smile *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** End of Eletter 51, Part 3 *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** End of Eletter 51, June 1992