E-LETTER on Systems, Control, and Signal Processing

ISSUE No. 82, June 1, 1995

E-mail:    eletter-request@win.tue.nl

Editors:   Anton A. Stoorvogel
           Dept. of Mathematics & Computing Science
           Eindhoven University of Technology
           P.O. Box 513
           5600 MB Eindhoven
           the Netherlands
           Fax     +31-40-465995

           Siep Weiland
           Dept. of Electrical Engineering
           Eindhoven University of Technology
           P.O. Box 513
           5600 MB Eindhoven
           the Netherlands
           Fax     +31-40-434582


1.      Editorial

2.      Personals

3.      General announcements
        3.1  Call for nomination George Polya prize
        3.2  New web server Systems analysis lab., Helsinki
        3.3  SCAD Update
        3.4  New LMI control toolbox for Matlab

4.      Positions
        4.1  Assistant professor EE dept. Northwestern university, Evanston
        4.2  Postdoc position real time control systems, Pittsburgh
        4.3  NSF graduate research assistantships, Un. of Texas, Arlington
        4.4  Postdoc research associate, Duke university, Durham
        4.5  Scholarships for doctoral studies, Bremen

5.      Books
        5.1  `Feedback control problems using Matlab and the control system
             tooolbox,' D.K. Frederick and J.H. Chow
        5.2  `Linear stochastic control systems,' Chen, Chen and Hsu
        5.3  `Nonlinear and adaptive control design,' Krstic
        5.4  Ph.D. thesis J. Shoberg
        5.5  ` Robust and optimal control,' K. Zhou, J.C. Doyle, and K .

6.      Journals
        6.1  CFP Special issue of mechanical systems and signal processing
        6.2  TOC SIAM J. control and optimization, vol.33:4
        6.3  TOC Circuits, systems and signal processing, vol.14:3
        6.4  TOC LAA volumes 220, 221 and 222
        6.5  TOC Automatica, vol.31:6

7.      Conferences
        7.1  Information ACC 1995
        7.2  Workshop control of semiconductor manufactoring processes,
        7.4  2nd Intl.symp. on methods and models in automation and robotics
        7.5  CFP 8th IEEE workshop SSAP-1996, Corfu.
        7.6  CFP Chinese control conference, Huangshau.
        7.7  Workshop on intelligent control: hybrid and exterior diff.
             systems, Bozeman
        7.8  Conf. communication, computing, control and signal processing,
        7.9  Portugese control conference, Porto
        7.10 1995 Int. conference on image processing, Washington, D.C.

              *                                        *
              *              Editorial                 *
              *                                        *

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              *                                        *
              *              Personals                 *
              *                                        *

                     No personals in this issue

              *                                        *
              *        General announcements           *
              *                                        *
Contributed by:  blackmore@siam.org

                            CALL FOR NOMINATIONS
                             GEORGE POLYA PRIZE

The Polya Prize
SIAM will present the award at the 1996 SIAM Annual Meeting in Kansas
City, Missouri, July 22-26.  The award honors the memory of George
Polya and will be given for a notable application of combinatorial

There are no restrictions except that the prize is broadly intended to
recognize specific work.

Description of the Award
The award will consist of an engraved medal and a $20,000 cash prize.

A letter of nomination, including a description of the achievement(s),
should be sent by July 1, 1995, to:

                   Dr. Paul Seymour
                   Chair, Polya Prize Selection Committee
                   Bell Communications Research
                   435 South Street
                   Morristown, NJ 07960

Supporting letters, or names of knowledgeable persons from whom such
letters might be solicited, are also welcome.

Contributed by: Raimo P. Hamalainen 

          Systems Analysis Laboratory Joins the Web

The homepages of the Systems Analysis Laboratory, Helsinki University of
Technology, are now open at


You are welcome to have a look at our research and to download our DSS
software (INPRE for the interval AHP, ComPAIRS for the PAIRS method, and
a demo of HIPRE 3+) for educational use in universities. We provide
links to other interesting web resources in the systems analysis area.

We also host the homepages of the International Society of Dynamic Games
(http://www.hut.fi/HUT/Systems.Analysis/isdg), where you can find copies
of past issues of the Society's newsletters.

Contributed by  Raimund J. Ober 
                Xu Huang 


        May 1995


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               Systems and Control Archive at Dallas

                 gopher:          gopher.utdallas.edu
                 ftp address:     ftp.utdallas.edu
                 IP number:
                 Worldwide web:   URL: http://www.utdallas.edu/research/scad
                 queries (email): scad@utdallas.edu

New contents:

   Number 81

Links to systems and control groups:
  The following new links have been added:

  Denmark: Aalborg University, Department of Control Engineering.
  Italy:  LAD-SEB, Padua, Systems Theory Group.
  The Netherlands:
        Eindhoven University of Technology,
                   Systems and Control Group, Department of Mathematics.
        Wageningen Agricultural University, Systems and Control Group,
                    Department of Agricultural Engineering and Physics.
  United Kingdom: UMIST,  Control Systems Centre.
        Georgia Institute of Technology, Aerospace controls group.
        University of Tennessee,  Maintenance Technology Laboratory,
                   Nuclear Engineering Department, College of Engineering.

NEW ACTIVITY !!!!!!!!!!!:

   SCAD ADDRESS LIST !!!!!!!!!!!!!!!

   A few days ago we have started an address list for systems
   and control people.

   We hope that this list will be of use to many SCAD users. So far
   we already have quite a few addresses. But to become a really
   useful tool we would like to encourage as many people as possible
   to register their address in SCAD.

   To register, simply:
      - go to the ADDRESS LIST link
      - click: add your address
      - fill in the form.

   You can check out addresses by using the search facility or
   by scanning through the full list.

   !!!!!!!!!!! PLEASE, Add your Address to the SCAD ADDRESS LIST !!!!!!!!!!!


How to access scad:
  1.) Using gopher:
       gopher -p 1/research/scad gopher.utdallas.edu
       gopher gopher.utdallas.edu
    Select `UT-Dallas Research' and then `Systems and Control Archive at
  2.) Using ftp:
       ftp ftp.utdallas.edu
    Then cd /pub/scad
  3.) Using Worldwide Web:
       URL: http://www.utdallas.edu/research/scad

  More detailed instructions can be obtained by sending an email to


  After accessing SCAD you can find a README file which contains
  more information about SCAD.

Contributed by: P. Gahinet (gahinet@tbird.inria.fr)

               LMI  Control  Toolbox

We are pleased to announce the mid-June release of the
LMI Control Toolbox for use with MATLAB.  This toolbox
is an easy gateway to the fast-growing field of LMI
optimization and LMI-based control.  It contains:

  * a user-friendly environment to specify and solve
    general LMI optimization problems (the LMI Lab)

  * a collection of specialized tools for the analysis
    and design of control systems via LMI techniques.

The LMI Lab is the core feature of the LMI Control Toolbox.
It is flexible, fully programmable, and provides
specialized solvers for the three generic LMI optimization
problems. Thanks to a GUI called the LMI Editor, LMI
constraints can be specified directly as symbolic matrix
expressions with structured matrix variables. For instance,
a Lyapunov inequality is entered as  A'*X+X*A+Q < 0 after
declaring X as a symmetric matrix variables. The LMI Lab
uses a structured representation of such LMIs where only
A and Q are stored. This structure-aware approach minimizes
storage requirements and boosts the efficiency of the LMI

The control-oriented tools cover state-of-the-art applications
of LMI techniques to robust control. These include tools for

  * robust stability/performance analysis, using either
    mu-analysis, quadratic stability, parameter-dependent
    Lyapunov functions, or the Popov criterion

  * multi-model/multi-objective state-feedback synthesis
    with a combination of LQG and H-infinity performance
    and regional pole placement constraints

  * Riccati- and LMI-based H-infinity synthesis (with
    automatic regularization of singular problems in
    Riccati-based synthesis)

  * multi-objective output-feedback synthesis (mixed
    H2/Hinf synthesis with regional pole placement)

  * loop shaping design (including a GUI to specify the
    shaping filters)

  * design of robust gain-scheduled controllers for linear
    parameter-varying systems.

The user's manual is complete with an introduction to LMIs,
details on the LMI formulation of the various control
applications, numerous examples, and four demos.

The LMI Control Toolbox will be on display at the MATLAB booth
at the '95 ACC.

           P. Gahinet - A. Nemirovski - A. Laub - M. Chilali

              *                                        *
              *              Positions                 *
              *                                        *

Contributed by:  Abraham Haddad 

         Assistant Professor Position Open at Northwestern University

The Department of Electrical Engineering and Computer Science at
Northwestern University has one tenure track faculty position at the
assistant professor level in the area of control systems for
the academic year 1995-96 starting September 1995.  The candidate
will be part of an active control group involving five department
at the McCormick School of Engineering and Applied Science.  The
group started a research project in collaboration with General Motors
and supported by a grant from the GM Foundation.

Northwestern University is an equal opportunity, affirmative action
educator and employer.  Applications from women and minorities are
especially encouraged.  Employment verification required upon hire.

Applicants should have attained a doctoral degree in electrical
engineering or a closely related field by the starting date of the
appointment.  Candidates must have strong research and teaching

Interested persons should send their resumes and the names and
addresses of at least four references to:

                       Professor A. H. Haddad, Chairman
                       Department of EECS
                       Northwestern University
                       2145 Sheridan Road
                       Evanston, Illinois 60208-3118

                       (708) 491-3641

Contributed by: Bruce Krogh (krogh@ece.cmu.edu)

      Post-Doctoral Position in Real-Time Control Systems

The Software Engineering Institute (SEI) and Department of Electrical and
Computer Engineering (ECE) at Carnegie Mellon University, Pittsburgh, PA,
invite applications for a one-year post-doctoral position in the area of
software architectures for highly-reliable real-time control systems.
Duties include technology development and evaluation; experiment design and
implementation; analysis of experimental data and writing technical reports
and papers.  This is a one year position which may be converted to a
full-time member of the technical staff at the end of the appointment.

Qualifications: Ph.D in control systems, robotics, manufacturing systems, or
related areas; hands-on experience with real-time operating systems and
design, implementation and testing of real time software experiments,
modeling and analysis of physical dynamic systems, signal processing,
filtering, failure detection, robust control, or distributed system
required. Experience with applications in industrial process control, motion
control systems, or micro-electronics manufacturing process is preferred.

For more information contact (preferably by e-mail):

Bruce H. Krogh
Department of Electrical and Computer Engineering
Carnegie Mellon University
Pittsburgh, PA 15213-3890
e-mail: krogh@ece.cmu.edu
phone: +1 412 268 2472
fax: +1 412 268 3890

Contributed by: F. Lewis    


                          AVAILABLE IN


              The University of Texas at Arlington
                     Arlington, Texas 76019

Applications are invited for the National Science Foundation
"Graduate Research Traineeship" Ph.D. Program at The University of
Texas at Arlington.  The GRT Program is in the area of Robotics and
Intelligent Control, and provides a Fellowship stipend of
$14,000/year, plus waiver of all tuition and fee expenses.
Applicants must have a good GPA and be US citizens or permanent
residents;  women and minorities are especially invited to apply.
Ph.D. degrees can be pursued in either Electrical Engineering or
Computer Science Engineering.  Ph.D. candidates may elect to
perform research at UTA's Automation and Robotics Research
Institute, whose facilities include an intelligent control lab,
robotics labs, and manufacturing workcells.  UTA is a full service
university located in the heart of the Dallas/Ft. Worth Metroplex,
within easy reach of cultural events, museums, and entertainment
and sports events.  Please send your applications to Professor F.
L. Lewis, Director of Advanced Controls, Automation and Robotics
Research Institute, The University of Texas at Arlington, 7300 Jack
Newell Blvd. S, Ft. Worth, Texas 76118-7115, tel. 817-794-5972,
fax. 817-794-5952, email flewis@controls.uta.edu.

Contributed by Dr. L.G. Bushnell (bushnell@aro-emh1.army.mil)


Funded by the National Research Council
Annual stipend:  42,000 - 44,000
Must be a US Citizen
At Duke University, Durham, North Carolina
Starting:  January 1996
Application Deadline:  August 15, 1995

Topic:  Exterior Differential Systems, Nonholonomy, and Nonlinear Control

New tools and techniques from nonlinear geometric control theory and
exterior differential system are needed to further research the control of
nonholonomic and nonlinear systems.  Some specific research topics include
(1) developing obstacle-avoidance path planning algorithms and interactive
steering simulations to test out these algorithm;  (2) stabilizing the system
around the resulting trajectories and finding actual implementations that
work well; (3) generating trajectories for systems with drift; (4) employing
exterior differential systems techniques to develop nonlinear normal forms
for use in control theory; (5) investigating how to convert to these normal
forms by using feedback transformations and how to control systems in these
normal forms.  Various applications include the control of locomotion systems
such as wheeled robotic vehicles, aircraft, swimming robots, and snake-like

Contact L.G. Bushnell at above email address for further information.

Contributed by:  Luc Habets 


The Graduiertenkolleg "Complex Dynamical Systems" offers scholarships
for Doctoral studies, starting on the 1st of August, to applicants with
a strong degree in Mathematics or Physics.

The scholarship amounts to DM 1400,- plus an allowance of DM 200,-
with an additional amount for students who are married or have
children.  The scholarship is initially offered over a period of two

The program is oriented on the research interests of the university
staff who take part in the Graduiertenkolleg. They are: L. Arnold,
A. Bunse-Gerstner, G. Czycholl, F. von Haeseler, W. Hiller,
D. Hinrichsen, P. Lemke, H.-F. Muenzner, D.J. Olbers, H.-O. Peitgen,
P.H. Richter, R. Schlitzer, G. Skordev.

Research areas are:

  Fractal Geometry and Stucture Formation
  Nonlinear Physics
  Stochastic Systems
  Control Theory
  Climate Modelling and Simulation.

Applications, including Resume, Degree Certificate, a copy of the
Masters/Degree thesis and referees reports, should be submitted by
13.6.95 to the Director of the Graduiertenkolleg:

  Prof. Dr. Hans-Friedrich Muenzner
  Institute for Dynamical Systems
  Department of Mathematics
  University of Bremen
  P.O. Box 330 440
  D - 28334 Bremen

For more information, please contact Prof. Muenzner by email
at the following address:


              *                                        *
              *                Books                   *
              *                                        *

Contributed by Joe Chow,  (chowj@rpi.edu)

  Feedback Control Problems Using MATLAB and The Control System Toolbox
                   Dean K. Frederick and Joe H. Chow
                   Bookware Companion Problems Book
                       PWS Publishing Company
                         ISBN 0-534-93798-5

Excerpts from Preface

The purpose of this book is to reinforce the learning process for those
who are studying the introductory aspects of control systems engineering
by allowing them to use a digital computer to rapidly work a wide range
of numerical problems. The book is built around illustrative examples
that demonstrate the steps involved in the analysis and design process.
The examples are followed by a variety of problems  that consist of
follow-up "what-if?" problems, textbook-type reinforcement problems,
open-ended exploratory problems, and realistic comprehensive problems.
To accomplish this objective, the book uses the power of MATLAB and the
Control System Toolbox. This book and the accompanying software diskette
will be a valuable supplement to any of the numerous textbooks that
cover the introductory aspects of feedback control.

The problems in this book are suitable for students taking a senior-level
course on the analysis and design of continuous-time feedback control
systems. In addition to classical control design methods based on
transfer-function models, the book also covers state-space models and
design methods. The material is organized like many of the introductory
control system textbooks. The state-space modeling of systems is
introduced early to emphasize its importance in modeling real-world
problems. However, for those following a syllabus without any state-space
modeling content, this material can be skipped without any loss of

The book is also suitable as a refresher for students entering a graduate
control system program. In addition, practicing engineers who already
have the necessary control background can use the book to learn about
MATLAB in a familiar context, and to learn about the Control System
Toolbox for the computer-aided design of classical control systems at a
level more advanced than the tutorial found in the Control System Toolbox
user's manual.

Contributed by: Guanrong Chen 

      NEW TEXT BOOK announcement (to be in the market by July 1995)


Author:     Guanrong Chen   (University of Houston)
            Goong Chen      (Texas A&M University)
            Shih-Hsun Hsu   (National Taiwan University)

Publisher:  CRC Press
            2000 Corporate Blvd., N.W.
            Boca Raton, FL  33431-9868, U.S.A.
            Tel: 1-800-272-7737 or 407-994-0555
            Fax: 1-800-374-3401 or 407-994-3625
Catalog No. 8075NHR;  ISBN: 0-8493-8075-8
c. 464 pp.  Approx. In US - $59.95; Outside US - $72.00.

This textbook is essentially self-contained; the basic prerequisites are
advanced calculus, elementary ordinary differential equations, and linear
algebra. The book constitutes an outgrowth of the authors' instructional
material that has been developed over a 5-year period from a course in
statistical control systems design which the first author has taught at
the University of Houston, and a period of 10 years from courses in
stochastic control systems which the second author taught at Pennsylvania
State University and Texas A&M University. Over the years of teaching,
we have begun to feel a need and an urge to develop a textbook that fits
the instructional demands and diversity of our own students, and is
accessible to general audience. Our students have come from mixed
backgrounds and their interests vary from engineering to physics, applied
mathematics, economics and operations research. They are generally second
year graduate or higher, who have taken advanced calculus and have been
exposed to some elementary statistics and deterministic control theory.
As instructors, we have tried to provide guidance for students on how best
to study stochastic control systems in a modern context, supplying detailed
derivations and rigorous proofs, and assisting them in developing a coherent
mathematical theory. It is these endeavors and our firm commitment to
providing students with a strong mathematical foundation that have resulted
in this modest textbook, which we hope can serve for the same purpose in
graduate schools and related discipline areas. A guided plan for using this
book is provided at the beginning of the text. While mathematical rigor and
coherence were our main concerns in the writing of the book, the real driving
force is our desire to convey those aspects of modern stochastic control
theory that have actually been put to use in practical engineering
applications. Every chapter contains many examples and exercises.

Table of Contents

Chapter 1  Introduction
(including: Text organization and reading suggestion)
Chapter 2  Probability and Random Processes
(including: Probability theory, stochastic processes and mean-square
Chapter 3  Ito Integrals and Stochastic Differential Equations
(including: Integrals of orthogonal increments processes, white noise and
sample calculus, Ito and Stratonovich integrals, and solutions of scalar-
and vector-valued linear stochastic differential equations)
Chapter 4  Analysis of Discrete-Time Linear Stochastic Control Systems
(including: Analysis of causal LTI stochastic control systems, controlled
Markov chains, state space systems and ARMA models, and mathematical
modeling with applications)
Chapter 5  Optimal Estimation for Discrete-Time Linear Stochastic Systems
(including: Optimal state estimation, Kalman Filtering, numerical examples,
and various modified (extended) Kalman filtering)
Chapter 6  Optimal Control of Discrete-Time Linear Stochastic Systems
(including: Deterministic dynamic programming and LQG optimal control
problems, stochastic dynamic programming and the separation principle,
adaptive stochastic control, system parameter identification and system
prediction of ARMA models)
Chapter 7  Continuous-Time Linear Stochastic Control Systems
(including: Analysis of continuous-time causal LTI systems, Markov diffusion
processes, deterministic dynamic programming and LQ optimal control problems)
Chapter 8  Optimal Control of Continuous-Time Linear Stochastic Systems
(including: Continuous-time LQ stochastic control problem, stochastic dynamic
programming, Kalman-Bucy filtering, optimal prediction and smoothing, and the
separation principle)
Chapter 9  Stability Analysis of Stochastic Differential Equations
(including: Stability of deterministic and stochastic systems)
Chapter 10  Appendix
10.1 Fundamental Real and Functional Analysis
10.2 Fundamental Matrix Theory and Vector Calculations
10.3 Martingales
References/ Index

Contributed by:  M. Krstic 

 From John Wiley and Sons:


                        Miroslav Krstic
                    Ioannis Kanellakopoulos
                        Petar Kokotovic

>>>>>>>>>>            Wiley's back cover:              <<<<<<<<<<

    An  introduction to the new design for nonlinear  control
    systems -- BACKSTEPPING -- written by its own architects.

This innovative book breaks new ground in nonlinear and  adaptive
control  design  for systems with uncertainties.  Introducing the
recursive backstepping methodology, it shows  --  for  the  first
time  --  how uncertain systems with severe nonlinearities can be
successfully controlled with this new powerful design tool.

Communicative and accessible at a level not  usually  present  in
research  texts,  "Nonlinear  and Adaptive Control Design" can be
used as either a stand-alone or a supplemental text in courses on
nonlinear or adaptive control, as well as in control research and
applications. It eases the reader into the subject matter, assum-
ing  only standard undergraduate knowledge of control theory, and
provides a pedagogical presentation  of  the  material,  most  of
which is completely new and not available in other textbooks.

Written by the creators of backstepping, the book:

* Introduces the basic design tools and demonstrates their effec-
  tiveness through worked examples

* Provides  detailed  proofs  and  application  examples  (active
  suspension, jet engine, induction motor, ...)

* Develops adaptive backstepping, tuning functions,  and  modular
  designs with full state feedback

* Generalizes the methodology to systems with output feedback

* Describes the advantages of the new  adaptive  nonlinear  tech-
  niques over traditional methods

* Offers a systematic methodology for performance improvement

* Provides new designs for linear systems which can be  used  in-
  dependently from the rest of the book

* Is self-contained with an extensive summary  of  stability  and
  passivity prerequisites

* Includes sixty illustrations and tables with design algorithms

                Table of Contents:

        CHAPTER 1       Introduction

        CHAPTER 2       Design Tools for Stabilization
        CHAPTER 3       Adaptive Bacstepping Design
        CHAPTER 4       Tuning Functions Design
        CHAPTER 5       Modular Designs with Passive Identifiers
        CHAPTER 6       Modular Designs with Swapping Identifiers

        CHAPTER 7       Output-Feedback Design Tools
        CHAPTER 8       Tuning Functions Designs
        CHAPTER 9       Modular Designs
        CHAPTER 10      Linear Systems

        A   Lyapunov Stability and Convergence
        B   Input-Output Stability
        C   Input-to-State Stability
        D   Passivity
        E   Parameter Projection
        F   Nonlinear Swapping
        G   Differential Geometric Conditions

563 pages, hardcover
ISBN 0-471-12732-9

Examine FREE for 15 days! (USA only)
Price: $69.95

Order from:     John Wiley and Sons, Inc.
                Attn: E. Covington
                605 Third Avenue
                New York, NY 10158-0012

Or call:        800-US-WILEY (800-879-4539)

Contact authors at:
M. Krstic (UC Santa Barbara)     miroslav@tesla.ece.ucsb.edu
I. Kanellakopoulos (UCLA)        ioannis@ee.ucla.edu
P. Kokotovic (UC Santa Barbara)  petar@ece.ucsb.edu

Contributed by: Jonas Sjoberg (sjoberg@isy.liu.se)

        PhD thesis available

My PhD thesis with the title


is available by FTP or WWW. It contains 223 pages and it is stored as
compressed postscript. (3.6 Mbyte uncompressed, 1.2 Mbyte compressed).

Regards,  Jonas Sjoberg

Jonas Sjo"berg
Dept. of El. Engineering
University of Linkoping                 Telefax: +46-13-282622, or
S-581 83 Linko"ping                     E-Mail: sjoberg@isy.liu.se

Anonymous FTP: joakim.isy.liu.se or
directory: pub/Misc/NN/
file : PhDsjoberg.ps.Z

WWW: file://joakim.isy.liu.se/pub/Misc/NN/
file : PhDsjoberg.ps.


This thesis addresses the non-linear system identification problem,
and in particular, investigates the use of neural networks in system
identification.  An overview of different possible model structures is
given in a common framework. A nonlinear structure is described as the
concatenation of a map from the observed data to the regressor, and a
map from the regressor to the output space. This divides the model
structure selection problem into two problems with lower complexity:
that of choosing the regressor and that of choosing the non-linear map.

The possible choices for the regressors consists of past inputs and
outputs, and filtered versions of them. The dynamics of the model
depends on the choice of regressor, and families of different model
structures are suggested based on analogies to linear black-box
models. State-space models are also described within this common
framework by a special choice of regressor. It is shown that
state-space models which have no parameters in the state update
function can be viewed as an input-output model preceded by a
pre-filter.  A parameterized state update function, on the other hand,
can be seen as a data driven regressor selector.  The second step of
the non-linear identification is the mapping from the regressor to the
output space. It is often advantageous to try some intermediate
mappings between the linear and the general non-linear mapping. Such
non-linear black-box mappings are discussed and motivated by
considering different noise assumptions.

The validation of a linear model should contain a test for
non-linearities and it is shown that, in general, it is easy to detect
non-linearities. This implies that it is not worth spending too much
energy searching for optimal non-linear validation methods for a
specific problem. Instead the validation method should be chosen so
that it is easy to apply. Two such methods, based on polynomials and
neural nets, are suggested. Further, two validation methods, the
correlation-test and the parametric F-test, are investigated. It is
shown that under certain conditions these methods coincide.

Parameter estimates are usually based on criterion minimization. In
connection with neural nets it has been noted that it is not always
optimal to try to find the absolute minimum point of the criterion.
Instead a better estimate can be obtained if the numerical search for
the minimum is prematurely stopped. A formal connection between this
stopped search and regularization is given. It is shown that the
numerical minimization of the criterion can be view as a
regularization term which is gradually turned to zero. This closely
connects to, and explains, what is called overtraining in the neural
net literature.

Contributed by: Kemin Zhou: kemin@gate.ee.lsu.edu

Authors:        Kemin Zhou with John C. Doyle and Keith Glover

Publisher:      Prentice Hall, New Jersey, 1995
ISBN:           0-13-456567-3.   600+ pages

title pages, table of contents, and highlights can be obtained by
anonymous ftp: hot.caltech.edu  /pub/kemin/ZDG/zdg0a.ps tofc.ps highlight.ps

Table of Contents:

Notation and Symbols
List of Acronyms
Chapter 1.      Introduction
Chapter 2.      Linear Algebra
Chapter 3.      Linear Dynamical Systems
Chapter 4.      Performance Specifications
Chapter 5.      Stability and Performance of Feedback Systems
Chapter 6.      Performance Limitations
Chapter 7.      Model Reduction by Balanced Truncation
Chapter 8.      Hankel Norm Approximation
Chapter 9.      Model Uncertainty and Robustness
Chapter 10.     Linear Fractional Transformation
Chapter 11.     Structured Singular Value
Chapter 12.     Parameterization of Stabilizing Controllers
Chapter 13.     Algebraic Riccati Equations
Chapter 14.     H_2 Optimal Control
Chapter 15.     Linear Quadratic Optimization
Chapter 16.     H_infinity Control: Simple Case
Chapter 17.     H_infinity Control: General Case
Chapter 18.     H_infinity Loop Shaping
Chapter 19.     Controller Order Reduction
Chapter 20.     Fixed Structure Controllers
Chapter 21.     Discrete Time Control

              *                                        *
              *               Journals                 *
              *                                        *
Contributed by: Peter Sherman 

                    CALL  FOR  PAPERS

   A Special Issue of Mechanical Systems & Signal Processing

               devoted to Rotating Machinery

Rotating machinery represents perhaps the most important class of mechanical
systems. The demands on this class of systems in recent years have increased
at a significantly greater rate than the development and use of the advanced
signal processing methodologies needed to accommodate them. The goal of this
special issue is to provide a focussed forum for the discussion of the
limit- ations of traditional signal processing tools and for presentation of
advanced tools particularly appropriate for intra-cycle analysis of rotating
machinery.  The first, should focus on the limitations of signal processing
methods that assume that signals are wide sense stationary random processes
and that systems are time-invariant. For example, while these assumptions
may be valid in certain settings, they are seldom verified prior to applying
signal and system analysis tools which rely on them. Furthermore, in the
case where signal records are collected synchronously with a top-dead-center
pulse, it is almost certain that the underlying random processes are not
wide sense stationary. The second type of paper should focus on advanced
signal and system identification tools which relax the above
assumptions. These might include methods for time-varying or time-periodic
random processes and systems.

Both types of papers should address the validity of the underlying
assumptions pertaining to the tools to be studied, at least in part within
the context of experimental measurements obtained from rotating machinery.

Papers prepared following the MSSP Journal's Instructions to Authors should
be submitted to:

                  Professor Peter Sherman
                  Department of Aerospace Engineering & Eng. Mechanics
                  Black Engineering Bldg.
                  Iowa State University
                  Ames, IA  50011-3231

Contributed by: thomas@siam.org

JULY 1995 Volume 33, Number 4


Feedback Laws for Nonlinear Distributed Control Problems via
Trotter-Type Product Formulae
Catalin Popa

Regularity Conditions for the Stability Margin Problem with Linear
Dependent Perturbations
Antonio Vicino and Alberto Tesi

The H_infinity Problem for Infinite-Dimensional Semilinear Systems
Viorel Barbu

Relaxed Minimax Control
E. N. Barron and R. Jensen

Sensitivity Analysis in Nonlinear Programs and Variational
Inequalities via Continuous Selections
Jiming Liu

A Result Concerning Controllability for the Navier-Stokes Equations
E. Fernandez-Cara and M. Gonzalez-Burgos

Smoothly Global Stabilizability by Dynamic Feedback and
Generalizations of Artstein's Theorem
John Tsinias

A Mixed l_infinity/H_infinity Optimization Approach to Robust
Controller Design
Mario Sznaier

Orders of Input/Output Differential Equations and State-Space
Yuan Wang and Eduardo D. Sontag

Matrix Pairs in Two-Dimensional Systems: An Approach Based on Trace
Series and Hankel Matrices
Ettore Fornasini and Maria Elena Valcher

Lyapunov-like Techniques for Stochastic Stability
Patrick Florchinger

On Feedback Equivalence of a Parameterized Family of Nonlinear
J.-B. Pomet and I. A. K. Kupka

Necessary Conditions for Bilevel Dynamic Optimization Problems
Jane J. Ye

Using Persistent Excitation with Fixed Energy to Stabilize Adaptive
Controllers and Obtain Hard Bounds for the Parameter Estimation
Miloje S. Radenkovic and B. Erik Ydstie

Identification of q(x) in u_t=delta u - qu from Boundary
Sergei Avdonin and Thomas I. Seidman

Exact Observability of the Time-Varying Hyperbolic Equation with
Finitely Many Moving Internal Observations
A. Yu. Khapalov

Rendezvous Search on the Line with Distinguishable Players
Steve Alpern and Shmuel Gal

Erratum: Observability and Observers for Nonlinear Systems
J.-P. Gauthier and I. A. K. Kupka

Contributed by:  A. H. Zemanian (zeman@sbee.sunysb.edu)

Table of Contents for:


Vol. 14, No. 3, 1995

Pipelining and the unrestrained three-port wave filter adaptor at
the bit level,

Stabilization of spectral methods for the analysis of singular
systems using piecewise constant basis functions,
Andrea Caiti and Giorgio Cannata

Stochastic adaptive control of nonminimum phase systems in the
presence of unmodelled dynamics,
Miloje Radenkovic and Anthony N. Michel

High-level synthesis: Current status and future prospects,
H.D.Cheng and C.Xia

The running time-frequency distributions,
Moeness G. Amin

Iterative minimization of quadratic functionals,\\
Irwin W. Sandberg

Contributed by:  Richard Brualdi 

Contents Volume 220

Special Issue: Proceedings of the Workshop
``Nonnegative Matrices, Applications and Generalizations''
and the Eighth Haifa Matrix Theory Conference$L

Richard A. Brualdi (Madison, Wisconsin)
>From the Editor-in-Chief 1

Preface 7

Lars-Erik Andersson (Linkoping, Sweden),
Gengzhe Chang (Hefei, Anhui, China),
and Tommy Elfving (Linkoping, Sweden)
Criteria for Copositive Matrices Using Simplices
and Barycentric Coordinates 9

I. Baragana (San Sebastian, Spain) and I. Zaballa (Vitoria-Gasteiz, Spain)
Block Similarity Invariants of Restrictions to
(A, B)-Invariant Subspaces 31

Ilan Bar-On (Haifa, Israel) and Bruno Codenotti (Pisa, Italy)
A Fast and Stable Parallel QR Algorithm for Symmetric
Tridiagonal Matrices 63

Alberto Borobia (Madrid, Spain)
(0, $X1$S2$T, 1) Matrices Which Are Extreme Points of the
Generalized Transitive Tournament Polytope 97

Dragomir Z. D@B-okovic (Waterloo, Ontario, Canada)
Cosets of Centralizers in the General Linear Group
Contain Regular Elements 111

B. Curtis Eaves (Stanford, California), Uriel G. Rothblum (Haifa, Israel),
and Hans Schneider (Madison, Wisconsin)
Perron-Frobenius Theory Over Real Closed Fields and
Fractional Power Series Expansions 123

L. Elsner (Bielefeld, Germany)
The Generalized Spectral-Radius Theorem:
An Analytic-Geometric Proof 151

L. Elsner (Bielefeld, Germany) and S. Friedland (Chicago, Illinois)
Singular Values, Doubly Stochastic Matrices,
and Applications 161

Miroslav Fiedler (Prague, Czech Republic)
Numerical Range of Matrices and Levinger's Theorem 171

Stephen J. Kirkland (Regina, Saskatchewan, Canada)
and Michael Neumann (Storrs, Connecticut)
Group Inverses of M-Matrices Associated With Nonnegative
Matrices Having Few Eigenvalues 181

Mark Krupnik (Haifa, Israel)
Geometric Multiplicities of Completions of
Partial Triangular Matrices 215

George M. Lady (Philadelphia, Pennsylvania),
Thomas J. Lundy (Victoria, British Columbia, Canada),
and John Maybee (Boulder, Colorado)
Nearly Sign-Nonsingular Matrices 229

P. Lancaster (Calgary, Alberta, Canada) and
L. Rodman (Williamsburg, Virginia)
Minimal Symmetric Factorizations of Symmetric Real
and Complex Rational Matrix Functions 249

Yu. Lyubich (Haifa, Israel)
Perron-Frobenius Theory for Finite-Dimensional
Spaces With a Hyperbolic Cone 283

Rosa Amelia Martins (Aveiro, Portugal) and
Joao Filipe Queiro (Coimbra, Portugal)
Spectral Inequalities for Generalized Rayleigh Quotients 311

J. J. McDonald (Regina, Saskatchewan, Canada),
M. Neumann (Storrs, Connecticut),
H. Schneider (Madison, Wisconsin), and
M. J. Tsatsomeros (Regina, Saskatchewan, Canada)
Inverse M-Matrix Inequalities and Generalized Ultrametric Matrices 321

J. P. Milaszeqicz (Buenos Aires, Argentina)
Comparison Theorems for Monotone Newton-Fourier Iterations
and Applications in Functional Elimination 343

B. Mond (Bundoora, Victoria, Australia) and
J. E. Pecaric (Zagreb, Croatia)
Reverse Forms of a Convex Matrix Inequality 359

Reinhard Nabben (Bielefeld, Germany) and
Richard S. Varga (Kent, Ohio)
Generalized Ultrametric Matrices-a Class of Inverse M-Matrices 365

Ronald J. Stern and J. J. Ye (Montreal, Quebec, Canada)
Variational Analysis of an Extended Eigenvalue Problem 391

Robert C. Thompson (Santa Barbara, California)
Root Spreads for Polynomials and Hermitian Matrix Pencils 419

Referees, Volumes 201-220 435

Author Index, Volumes 201-220 441

Contents Volume 221

Charles Kenney (Santa Barbara, California) and
Gary Hewer (China Lake, California)
Trace Norm Bounds for Stable Lyapunov Operators 1

Jie-Tai Yu (Notre Dame, Indiana)
On Relations Between Jacobians and Minimal Polynomials 19

Werner Kratz (Ulm, Germany)
Characterization of Strong Observability and Construction
of an Observer 31

H. Narayanan (Bombay, India)
A Rounding Technique for the Polymatroid Membership Problem 41

M. Niezgoda and Z. Otachel (Lublin, Poland)
Differentiable Transformations Preserving a Cone Preordering 59

Philip A. Knight (Glasgow, United Kingdom)
Fast Rectangular Matrix Multiplication and QR Decomposition 69

Carl H. FitzGerald (La Jolla, California), Charles A. Micchelli
(Yorktown Heights, New York), and Allan Pinkus (Haifa, Israel)
Functions That Preserve Families of Positive Semidefinite Matrices 83

Li Jiong-Sheng (Hefei, Anhui, People's Republic of China)
Eigenvalues of Oriented-Graph Matrices 103

Andrew J. Lazarus (Berkeley, California)
Eigenvectors of Circulant Matrices of Prime Dimension 111

Li Luoluo (Guangzhou, People's Republic of China)
Sufficient Conditions for the Solvability of an Algebraic
Inverse Eigenvalue Program 117

Shao Jia-yu (Shanghai, People's Republic of China)
On the Largest kth Eigenvalues of Trees 131

Zhi-Hao Cao (Shanghai, People's Republic of China)
On Convergence of Nested Stationary Iterative Methods 159

LeRoy B. Beasley (Logan, Utah), Stephen J. Kirkland
(Regina, Saskatchewan, Canada), and Bryan L. Shader
(Laramie, Wyoming)
Rank Comparisons 171

J. M. Pena (Zaragoza, Spain)
M-Matrices Whose Inverses Are Totally Positive 189

Steve Kirkland (Regina, Saskatchewan, Canada) and
Robert E. Hartwig (Raleigh, North Carolina)
A Convexity Result for Complex Numbers With Applications to
Nonnegative Normal Matrices 195

S. Jondrup (Copenhagen, Denmark)
Automorphisms and Derivations of Upper Triangular Matrix Rings 205

Juan M. Gracia and Francisco E. Velasco (Vitoria-Gasteiz, Spain)
Stability of Invariant Subspaces of Regular Matrix Pencils 219

R. D. Grigorieff and R. Plato (Berlin, Germany)
On a Minimax Equality for Seminorms 227

Kazuo Toraichi (Tsukuba, Ibaraki, Japan) and Masaru Kamada
(Hitachi, Ibaraki, Japan)
Knot Positions for the Smoothest Periodic Quadratic Spline
Interpolation of Equispaced Data 245

George Labahn (Waterloo, Ontario, Canada), Bernhard Beckermann
(Villeneuve d Ascq, France), and Stan Cabay (Edmonton, Alberta, Canada)
Inversion of Mosaic Hankel Matrices via Matrix Polynomial Systems 253

Author Index 281

Contents Volume 222

Bryan E. Cain (Ames, Iowa), Roger A. Horn
(Salt Lake City, Utah), and Li Luoluo (Guangzhou,
People's Republic of China)
Inequalities for Monotonic Arrangements of Eigenvalues 1

Joel Franklin (Pasadena, California)
Least-Squares Solution of Equations of Motion Under
Inconsistent Constraints 9

Leo Livshitz (Lennoxville, Quebec, Canada)
A Note on 0-1 Schur Multipliers 15

Haesun Park (Minneapolis, Minnesota) and
Sabine Van Huffel (Heverlee, Belgium)
Two-Way Bidiagonalization Scheme for Downdating the
Singular-Value Decomposition 23

Xiao-jun Wu, Jia-yu Shao, Zhi-ming Jiang, and Xi-zhao Zhou
(Shanghai, China)
On the Exponents of Primitive, Ministrong Digraphs With
Shortest Elementary Circuit Length s 41

Yang Shangjun (Hefei, Anhui, China) and Zhang Ronghua
(Dali, Yunnan, China)
Green's Relations in the Matrix Semigroup Mn (S) 63

R. A. Cuninghame-Green and P. Butkovic (Birmingham, United Kingdom)
Extremal Eigenproblem for Bivalent Matrices 77

Seok-Zun Song (Cheju, Republic of Korea)
A Conjecture on Permanents 91

James Lee Hafner (San Jose, California)
Explicit and Asymptotic Formulas for LDMt Factorization of
Banded Toeplitz Matrices 97

Hong-guo Xu (Shanghai, People's Republic of China) and
Lin-zhang Lu (Xiamen, Fujian, People's Republic of China)
Properties of a Quadratic Matrix Equation and the Solution of the
Continuous-Time Algebraic Riccati Equation 127

Mau-hsiang Shih and Jinn-wen Wu (Chung-Li, Taiwan)
Two Results on the Spectral Radius of a Complex Matrix,
With Application to Instability 147

Yuri Bolshakov (Yaroslavl, Russia) and Boris Reichstein
(Washington, D.C.)
Unitary Equivalence in an Indefinite Scalar Product: An Analogue
of Singular-Value Decomposition 155

Luz M. DeAlba (Des Moines, Iowa) and Charles R. Johnson
(Williamsburg, Virginia)
Possible Inertia Combinations in the Stein and Lyapunov Equations 227

Jaroslav Kautsky and Radka Turcajova (Adelaide, Australia)
Pollen Product Factorization and Construction of
Higher Multiplicity Wavelets 241

Kazuo Murota (Kyoto, Japan)
An Identity for Bipartite Matching and Symmetric Determinant 261

Author Index 275

Contributed by: Huibert Kwakernaak


                              Table of contents
June, 1995                                               Issue  31:6

Regular Papers

L. Qiu, B. Bernhardsson, A.     A formula for computation of the real
Rantzer, et al.                 stability radius

R. A. DeCarlo                   Output feedback variable structure control

J. D. Boskovic, K. S.           Comparison of linear, nonlinear and neural
Narendra                        network-based adaptive controllers for a
                                class of fed-batch fermentation processes

Q. F. Wei, W. P. Dayawansa,     Nonlinear controller for an inverted pendulum
W. S. Levine                    having restricted travel

C. C. Chung, J. Hauser          Nonlinear control of a swinging pendulum

J.A. Rossiter, B.               Feasibility and stability results for
Kouvaritakis, J.R. Gossner      constrained stable generalized predictive

Brief Papers

Chih-Yuan Chen, Ming-Hwei       Quantitative robust performance design with
Perng                           minimal cost of feedback

M. E. Bonilla, M. Malabre       Geometric minimization under external
                                equivalence for implicit descriptions

Young Man Cho, T. Kailath       Fast subspace-based system identification: An
                                instrumental variable approach

P. Misra, P. van Dooren, V.     Pole-zero representation of descriptor
Syrmos                          systems

Technical Communiques

F. Rezayat                      On the use of SPSA-based model-free
                                controller in quality improvement

Han Ho Choi, Myung Jin Chung    Memoryless H-infinity controller design for
                                linear systems with delayed state and control

T. Mori, H. Kokame              Comments on "On the stability of discrete-
                                time linear interval systems"

Book Reviews

P. Nedoma                       K. Ogata: Solving control engineering
                                problems with MATLAB

J. Fidler                       R. Bulirsch, D. Kraft: Computational optimal

              *                                        *
              *              Conferences               *
              *                                        *
Contributed by: Glenn Masada  (masada@mail.utexas.edu)

June 21-23, 1995
The Westin Hotel
Seattle, Washington, USA

The 1995 American Control Conference will have over 1000 technical papers
presented to reflect the rapid growth and strong interest in the field of
control engineering. The program features strong representation in
applications areas such as aerospace, robotics and process control and in
theoretical areas such as estimation, robust control and artificial
intelligence. Plenary speakers are Dr. E. Stear of the Boeing Company,
Professor K. Poolla of the University of California at Berkeley, and Dr.
I.D. Landau of G.R. Automatique.

The conference will be preceded by seven tutorial workships which will be
held on June 19 and 20. The December, 1994 issue of IEEE Control Systems
Magazine has detailed descriptions of these workshops.

There will be a number of social events, luncheons and receptions.
Detailed information can be found in the February and April, 1995 issues of
IEEE Control Systems Magazine or by accesssing the World Wide Web at:


For any other information, please contact the General Chair,
  Masayoshi Tomizuka
  Department of Mechanical Engineering
  University of California
  Berkeley, CA 94720, USA
  Phone: (510) 642-0870
  email: tomizuka@euler.berkeley.edu

Contributed by Bruce H. Krogh


        Tutorial Pre-Conference Workshop -- June 20, 1995
                  American Control Conference
                     Seattle, Washington

Pramod Khargonekar & Bruce H. Krogh
Univ. of Michigan    Carnegie Mellon Univ.

Additional Presenters:
Tom Edgar        Kameshwar Poolla      Chuck Schaper
Univ. of Texas   Univ. of California   Stanford Univ.

****** Workshop Schedule ********

Morning (8:30-12:00) Background

8:30-9:15 Overview of Semiconductor Manufacturing Systems (Krogh)

9:15-9:45 Current Practice (Krogh)

9:45-10:30 Sensors and actuators (Khargonekar)

10:30-10:45 Break

10:45-11:30 Process modeling and system identification (Khargonekar)

11:30-12:00 Control system implementation issues (Krogh)

12:00-13:30 Lunch break

Afternoon (13:30-17:00) Current research - Case Studies

13:30-14:10  Control for Advanced Semiconductor Device Manufacturing:
             A Case History (Schaper)

14:10-14:50  Semiconductor manufacturing process control research projects
             at Berkeley (Poolla)

14:50-15:05  Break

15:05-15:45  Sensors, Modeling and Control of Reactive Ion Etching

15:45-16:25  Model-based Control of Rapid Thermal Processing (Edgar)

16:30-17:00  Future Research Directions (Open discussion with presenters)

Contributed by:  Ewaryst Rafajlowicz 

                        The 2nd International Symposium
                        August 30 - September 2, 1995
                            Miedzyzdroje, Poland
Organized by:

Institute of Control Engineering, Technical University of Szczecin, Poland

Sponsored by:

Polish Academy of Sciences:
- Committee of Automation and Robotics
- Committee of Metrology and Instrumentation
- Commission of Cybernetics, Poznan Branch


The objective of the Symposium is to bring together scientists and engineers
to discuss recent developments in the area of mathematical methods,
modelling, simulation and identification in automation and robotics.  This
Symposium is the second event in a series which started in 1994 with the

Programme Overview:


Some aspects of Recursive Least Squares and Self-Tuning
        A. Niederlinski (PL)
Automata and languages
        T. Puchalka and P. Siwak (PL)
Mechatronic Approach to Robotic Modelling. Software Engineering Perspective
        O. Ravn (DK) and M. Szymkat (PL)


        Infinite-dimensional systems
        Organized by H. Zwart (NL)

Semigroup Criteria of Admissibility
        P. Grabowski (PL) and F. Callier (B)
Optimal Control for Time-Varying Infinite Dimensional Systems
        B. Jacob (D)
Mathematical Control Theory for Problems Arizing in the Models of Smart
        I. Lasiecka (USA)
Boundary Control of PDE's
        M. Pedersen (DK)
A Comparison Between Approximate and Behavioural Controllability for
Delay-Differential Systems
        P. Rocha (P)
Interpolation Theory for Control of Infinite-Dimensional Systems
        H. Zwart (NL)

        Singular 2-D systems
        Organized by T. Kaczorek (PL)

Infinite Dimensional Singular 2-D Systems
        J. Klamka (PL)
Approximation of Digital Model for Continuous Linear 2-D System
        J. Kurek (PL)
Pass Reachability of the Linear Discrete Repetitive Processes
        K. Galkowski (PL), E. Rogers and D. Owens (UK)
Generating Functions: A New Method for the Computation of 2-Dimensional
Transition Matrices
        N. E. Mastorakis (G)
N-dimensional Sampling As a Tool for Nonlinear Neurocontrol
        A. Dzielinski (PL)
Two-Point Boundary Problem for 2-D Continuous-Discrete Linear Systems
        T. Kaczorek (PL)
A Method for Determining n-Dimensional Parameter Tolerance Area for Optimal
Start Controller of Induction Motors
        T. Niewierowicz (PL)

        Recent developments in robotics
        Organized by K. Kozlowski (PL)

Design of a man-machine interface in teleoperation: a real-virtual approach
        F. Chavand (F)
Dynamic identification and control of robotics manipulator
        M. Gautier (F)
Robot motion planning with path space iteration
        D. Popa and J. Wen (USA)
New concepts for mobile robot idoor navigation
        F. M. Wahl (D)
Motion space analysis and trajectory planning for dual-arm system
        W. Szynkiewicz and A. Gosiewski (PL)
Avoidable and unavoidable kinematic singularities of robotic manipulators
        K. Tchon (PL)
Features of robot drive system and their influence on dynamicd and control of
the arm
        E. Jezierski (PL)
Hybrid evolutionary approach to control of intelligent arm
        W. Jacak (A)


Distributed parameter systems (7 papers)
Stability and robust control systems (9 papers)
2-D systems (7 papers)
Optimization methods (9 papers)
Predictive and adaptive control (10 papers)
Components and instrumentation in control engineering (7 papers)
Operational, switching and discrete processes (10 papers)
Neural networks and learning systems (11 papers)
Neural networks and fuzzy logic applications (10 papers)
Identification methods and algorithms (10 papers)
Pattern recognition, diagnostics and fault detection (7 papers)
Robot design and control (11 papers)
Robot modelling and simulation (14 papers)
Systems modelling and simulation I (10 papers)
Systems modelling and simulation II (9 papers)

Information for participants:

The Symposium will be held in Miedzyzdroje, a well-known Baltic seaside
resort of North-Western Poland. The Meeting will take place at the Slavia
Hotel close to the Wolin National Park. The Hotel can accommodate all
participants at reasonable prices (180-280 ECU).

During the Symposium tourist trips are planned to points in the Miedzyzdroje
area and a cruise to the Bornholm Island.

The registration fee of the Symposium covering the costs of Symposium
Proceedings, ferry trip to the Bornholm Island and banquet is 150 ECU.


After the Symposium a free coach transport to Berlin airports will be
provided for participants of the European Control Conference in Rome.

For more information contact:

                Prof. Z. Emirsajlow - Chairman of the Organizing Committee
                Prof. S. Banka - Secretary of the IPC
        Phone:  (+48 91) 49 47 04, 49 47 37
        Fax:    (+48 91) 34 09 32
        E-mail: emirsaj@uoo.univ.szczecin.pl

Contributed by:  Ananthram Swami 

                      8th IEEE SIGNAL PROCESSING WORKSHOP

                               June 24-26, 1996
                       The Corfu Hilton, Corfu,  GREECE

      ----------------------- CALL FOR PAPERS ----------------------------

     This workshop is the eighth in a series of biannual meetings sponsored
     by the IEEE Signal Processing Society. Following the successful scheme
     of previous meetings,   the workshop will feature keynote addresses by
     leading researchers in the area, and poster sessions consisting of both
     invited as well as contributed papers.   Participation will be limited.

     Authors are invited to submit contributions in the areas of, but not
     limited to:
       * Power spectrum analysis  %: parametric and non-parametric
       * Higher-order spectra in signal processing
       * Detection and estimation theory
       * Sensor array processing
       * Performance analysis % Statistical signal analysis
       * Nonlinear and chaotic signals and systems
       * Non-stationary processes: Time-frequency and time-scale
         representations; evolutionary spectra
       * Cyclo-stationary signal analysis
       * Signal processing for communications
       * Computational and implementation issues
       * Applications in all areas

     Prospective authors should submit four copies of a hundred word abstract
     and a two to four page extended summary to G.B. Giannakis (see below).
     The summary should include affiliations, addresses, tel/fax numbers and
     e-mail addresses, and keywords identifying one of the above topics.


     December  1, 1995 ........ Submission of extended summary
     February  1, 1996 ........ Notification of acceptance
     March    15, 1996 ........ Camera-ready paper

     For updated information, check out the Workshop's home page:

     You can reach us by e-mail at:     ssap96@spirit.ee.virginia.edu

                       Organizers and Co-Chairs

         Georgios B. Giannakis                    Ananthram Swami
    Dept. of Electrical Engineering               Malgudi Systems
      University of Virginia                     1046 Redondo Blvd
  Charlottesville, VA 22903-2442, USA     Los Angeles, CA 90019-6701, USA
        Fax: (804) 924-8818                     Fax: (213) 931-0914
     e-mail:  georgios@virginia.edu          e-mail:  a.swami@ieee.org

           European Liaison                 Austral-Asian Liaison
           ----------------                 ---------------------
             Mats  Viberg                       Yujiro Inouye
        Chalmers Inst. of Tech.               Osaka  University
                Sweden                              Japan

                          Local Arrangements
              Nicholas Kalouptsidis,   Univ. of Athens, Greece
        Maria Rangoussi, National Technical Univ. of Athens, Greece
                       e-mail:  maria@theseas.ntua.gr

                 Brian Sadler, Army Research Lab, USA

           Guotong Zhou, Georgia Institute of Technology, USA

             Michail Tsatsanis, University of Virginia, USA

Contributed by: Jane Ye (janeye@sol.uvic.ca)

  Call for papers

  Chinese Control Conference, Otc.15-20, 1995, Huangshan, Anhui, China

  General topics of interest will include, but are not limited to:
    Linear systems                     Nonlinear systems
    Stochastic control systems         Expert systems
    Distributed parameter systems      Large scale systems
    Social economy systems             Bio-environment systems
    Optimal control                    Robust control
    H infinity control                 Prediction control
    Fuzzy control                      Neural network control
    Intelligent control                Robot control
    Adaptive control                   Industrial control
    Model reduction                    Stability analysis
    Optimization methods               Modelling and system identification
    DEDS                               CIMS

  Key dates:
       March 31, 1995       Submission deadline
       May 10,   1995       Notification of acceptance
       June 30,  1995       Submission of camera-ready copy
       Oct.15-20,1995       Conference at Huangshan, Anhui

  Submission and enquiries:
      Dr. Jifeng Zhang
       Institute of Systems Science
       Chinese Academy of Sciences
       Beijing 100080, P.R. China
       Tel:  (861)2579540
       Fax:  (861)2568364
       Email: jif@iss03.iss.ac.cn

Contributed by Shankar Sastry and Linda Bushnell

   ARO-NASA Montana State University Workshop on Intelligent Control:
                Hybrid and Exterior Differential Systems
                        July 24 - July 29  1995
                            Bozeman, Montana

This workshop focuses on intelligent control. It is a continuation of a set
of workshops sponsored jointly by ARO and NASA; the first was at MIT in
October 1993, the second at Cornell in October 1994.

This year, the focus is on two apparently disparate topics: hybrid control
and exterior differential systems.  The first topic is an area of great
current interest featuring the use of new formal techniques for the analysis
of systems which have a mixture of continuous and discrete event parts.
These techniques are frequently used in the control of complex,
hierarchically-organized control systems.  The use of exterior differential
systems is a new way of unifying path planning and control for complex
systems at the lowest or "regulation" layers.

This workshop will feature the use of methods from exterior differential
systems, differential geometry, game theory, automata for the control of
complex, hierarchical control systems, nonholonomic systems, systems
with substantial nonlinearity in their dynamics and systems on Lie groups.

A partial list of topics to be covered include: linearization by state
feedback, nonholonomic systems, variational problems and exterior
differential systems, nonlinear normal forms and rolling, splines on Lie
groups, linearization by dynamic state feedback, path planning using
generalized splines, nonlinear maneuvering: connections with flat systems.

We invite researchers and students to both participate and speak at the
workshop.  Some travel and other support will be available.

The following is a partial list of people who have committed to speak thus
Andrzej Banaszuk (Ga Tech), Robert Bryant (Duke), Linda Bushnell (ARO),
Peter Caines (McGill), Robert Gardner (UNC), John Hauser (Colorado),
Robert Hermann (Boston U), L.R. Hunt (Dallas), Lucas Hsu (Princeton),
Naomi Leonard (Princeton), Petar Kokotovic (UC Santa Barbara),
Jerry Marsden (Caltech), Clyde Martin (Texas Tech), George Meyer (NASA Ames),
Richard Montgomery (Santa Cruz), Richard Murray (Caltech),
Brad Paden (UC Santa Cruz), Shankar Sastry (UC Berkeley),
William Shadwick (Toronto), Willem Sluis (Caltech), Dawn Tilbury (U
Michigan), and Z. Zhang (Texas Tech).

The program committee is: Linda Bushnell, Jagdish Chandra (ARO),
John Lund (Montana State University), Clyde Martin, George Meyer,
and Shankar Sastry.

For registration and more information, please contact Clyde Martin at
or Shankar Sastry and Linda Bushnell at

Contributed by:  Christine K. Lincke 

                     International Conference on
                          SIGNAL PROCESSING
         to honor the contributions of Professor Thomas Kailath

                           June 22-26, 1995
               Stanford University, Stanford, CA, USA

The traditional systems disciplines of communications, computation, control
and signal processing are becoming increasingly important in addressing
major technological challenges of the coming century, in fields such as
materials processing, highway automation, and ubiquitous personal
communications, among many others.  Moreover the boundaries between these
separate disciplines are rapidly being blurred by the many demands of these
applications.  This conference will highlight several of these recent trends
and results, presented by leading scientists and engineers from around the

Invited speakers include:  N. Abramson, B. Anderson, K. Astrom, B. Atal,
A. Bruckstein, S. Boyd, J. Cioffi, T. Cover, B. De Moor, P. Dewilde,
T. Durrani, C. Foias, D. Forney, R. Gallager, M. Gevers, I. Gohberg,
G. Golub, H. Kimura, P. Kokotovic, S.Y. Kung, R-W. Liu, L. Ljung,
D. Mayne, S. Meerkov, D. Messershmitt, S.K. Mitter, A. Netravali,
B. Ottersten, A. Paulraj, E. Robinson, V. Roychowdhury, R. Schafer,
G. Verghese, N. Viswanadham, A. Viterbi, J. Willems, G. Xu, L. Zadeh,

For further information, fax: 415-723-8473 or e-mail: chris@isl.stanford.edu

Contributed by: M.M. Ferreira and M.R. de Pinho
                (mmf@fe.up.pt, mrpinho@fe.up.pt)

                        CALL FOR PAPERS


                                CONTROL 96

                        September 11-13, 1996
                        Porto, Portugal

The Portuguese Society of Automatic Control will hold the 2nd Portuguese
Conference on Automatic Control Wednesday through Friday, September 11-13,
1996 in Oporto, Portugal. Held in cooperation with Instituto de Sistemas e
Robotica, Instituto Superior Tecnico and Faculdade de Engenharia da
Universidade do Porto, this conference will bring together people working in
the field of Control, Automation and related areas.

The official language of the Conference will be

Both contributed and invited papers will be included in the Program.
The conference will cover a range of topics relevant to theory and
pratical implementation of control and automation. Topics of interest

        - Linear and Nonlinear Systems
        - Adaptative Control
        - Robust Control
        - Modelling and Simulation
        - Systems Identification
        - Optimal Control and Optimization
        - Stochastic Control, Filtering and Estimation
        - Automation Systems and Control
        - Algorithms and Architectures for Real-Time Control
        - Robotics
        - Manufacturing Systems
        - Process Control
        - Electrical and Fluid Power Actuators
        - Signal Processing
        - Artificial Vision
        - Fuzzy Systems
        - Neural Networks

Only previously unpublished papers will be accepted for presentation at
the conference.


The conference committee is soliciting contributed papers. All papers
accepted for presentation will appear in the Conference Proceedings as
long as at least one of the authors register for the conference.
Prospective authors of papers should submit 5 (five) copies of a draft
in English by January 31, 1996 to

Maria do Rosario de Pinho
Fac. Eng. Universidade do Porto
Rua dos Bragas, 4099 Porto Codex
phone: -351-2-204 1847  Fax: -351-2-2000808
E.mail: control@fe.up.pt

Manuscripts should not exceed 6 (six) pages and should include author's
title and affiliation, full address, telephone, E-mail address, an
abstract not exceeding 200 words and 5 keywords. Talks will be 20 mns in
length including discussion.


The conference committee is also soliciting proposals for invited
sessions for the conference. Prospective Organizers should contact

Prof. Jorge Martins de Carvalho
Fac. Eng. Universidade do Porto
Rua dos Bragas, 4099 Porto Codex
phone:-351-2-204 1852  Fax: -351-2-2000808
E.mail: control@fe.up.pt

before December 15, 1995 for the appropriate forms. The complete forms
must be returned by January 15, 1996.

Requests for more information concerning the scientific program,
as well as any organizational questions, should be directed to:

Maria Margarida A. Ferreira
Fac. Eng. Universidade do Porto
Rua dos Bragas, 4099 Porto
phone: -351-2-2041847 Fax: -351-2-2000808
E.mail: control@fe.up.pt

DEADLINES: Proposals for Invited Sessions due January 15, 1996
           Contributed Papers due (five copies) January 31, 1996
           Notification of paper acceptance to authors May 2, 1996
           Camera Ready Copies due June 14, 1996

Contributed by: Maureen P. Quirk  

          ICIP-95 Program, Registration, and Hotel Information

             IEEE SIGNAL PROCESSING SOCIETY                  /|      /|
                                                            / |ICIP / |
                  October 23-26, 1995                      |  |____|__|
              Hyatt Regency Crystal City                   |  /    |  /
                 Washington, D.C., USA                     | /  95 | /
Web address:           http://www.ee.princeton.edu/~icip95
anonymous ftp site:    ftp.ee.princeton.edu/pub/ICIP95
automatic information: icip95@ieee.org  Use Subject: info


PROGRAM, REGISTRATION and HOTEL information are now available for ICIP-95.
Please check the Web page or anonymous ftp site for information about:

    Tutorials          Thursday, October 26, 1995
    Technical Program  Monday-Wednesday, October 22-25, 1995
    Registration       Advance Rate Cut-Off, September 22, 1995
    Hotels             Return reservation form by September 22, 1995

To receive all the above information, send a message to icip95@ieee.org
with the Subject: info. You will receive an automatic reply containing
the information and text versions of the forms.

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