E-LETTER on Systems, Control, and Signal Processing

ISSUE No. 84, August 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


Contents

1.      Editorial

2.      Personals

3.      General announcements
        3.1  www-page complexity in dynamical systems
        3.2  Short course in modern industrial control, Newcastle
        3.3  SCAD update

4.      Positions
        4.1  Postdoc fellowship position Nat. University of Singapore
        4.2  Postdoc fellowship Idaho State university
        4.3  Academic position at Catholic University Louvain

5.      Books
        5.1  "Digital video processing" A.M. Tekalp

6.      Journals
        6.1  Information MCSS
        6.2  TOC IEEE Transactions AC, vol.40:7
        6.3  TOC Circuits, Systems & Signal Processing, vol.14:4
        6.4  TOC LAA, vol.225
        6.5  TOC SIAM Journal Control & Optimization, vol.33:5
        6.6  TOC Automatica, vol.31:8
        6.7  TOC Modeling Identification and Control, vol.16:3
        6.8  CFP "Robust Control Applications", for special issue IJRC

7.      Conferences
        7.1  Final program ECC-1995
        7.2  European colloquium applications of nonlinear & adaptive control
        7.3  CFP 4th int. conf. on control, automation, robotics and
             vision, Singapore
        7.4  CFP 1st European conf. on structural control, Barcelona
        7.5  Block Island workshop on control using logic bases switching
        7.6  CFP 4th symp. on low cost automation, Buenos Aires


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              *              Editorial                 *
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Welcome to E-letter number 84 !!!

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              *              Personals                 *
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Contributed by:  Berend Roorda 

            CHANGE OF ADDRESS
             of Berend Roorda

FROM: Erasmus University, Tinbergen Institute

TO:
Berend Roorda, room 304
University of Groningen
Mathematics Institute
P.O. Box 800
9700 AV Groningen
the Netherlands
Telephone: +31 50 633961        (Monday -- Wednesday)
           +31 10 4294699       (Thursday -- Friday)
Fax:       +31 50 633976
Email:     B.Roorda@math.rug.nl

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Contributed by:  Lucy Y. Pao  (pao@schof.colorado.edu)

                     CHANGE OF ADDRESS

My new coordinates are:

Mail:     Electrical and Computer Engineering Department
          University of Colorado at Boulder
          Boulder, Colorado 80309-0425

Phone:    (303) 492-2360

Fax:      (303) 492-2758

E-mail:   pao@schof.colorado.edu

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Contributed by: Peter M. Young (pmy@LANCE.ColoState.edu)

                CHANGE OF ADDRESS

In August I will start a position at Colorado State
University.  My new address is:

        Department of Electrical Engineering
        Engineering Building C215
        Colorado State University
        Fort Collins, Colorado  80523

        Tel:    (970) 491-5406
        Fax:    (970) 491-2249
        E-mail: pmy@LANCE.ColoState.edu


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Contributed by:  mathans@MIT.EDU (Michael Athans)

MICHAEL ATHANS WINS BELLMAN AWARD

Professor Michael Athans of MIT was awarded the Richard E. Bellman Control
Heritage Award of the American Automatic Control Council. The citation reads
as follows: "In regognition of a distinguished career in automatic control
as a leader and champion of innovative research, as a contributor to
fundamental knowledge in optimal, adaptive, robust, decentralized and
distributed control, and as a mentor to his students."
The award was presented at the awards ceremony of the American Control
Conference, Seattle, Washington on June 22, 1995.

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              *                                        *
              *        General announcements           *
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Contributed by:  Onur Toker   

            -------------------------------------------
            WWW page: "Complexity in Dynamical Systems"
            -------------------------------------------

I have prepared a WWW page about the complexity issues in dynamical
systems. This page contains references to several results in this
relatively new area. The WWW address of this page is:

        http://eewww.eng.ohio-state.edu/~tokero/comp.html

"Complexity issues in dynamical systems" includes (but not limited to)
NP-hardness/completeness, algorithmic unsolvability
(including both by regular Turing machines, and by non-standard Turing
machines), algebraic unsolvability (being not semialgebraic over
Q, or over R), or any other type of complexity result about
problems related with linear systems, nonlinear systems, discrete
event/hybrid systems, or any other type of dynamical system.

In summary, "Complexity issues in dynamical systems" includes
any kind of complexity result about control/system theoretic problems.
Please feel free to contact with me if you would like to contribute to
this page (or if you have any suggestions/questions).

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Contributed by:  Lisa Crisafulli

               MODERN INDUSTRIAL CONTROL SHORT COURSE
                          SEPTEMBER 25 - 29 1995
              NEWCASTLE UNIVERSITY, NEWCASTLE, AUSTRALIA

Professor Graham Goodwin and colleagues from the Centre for Industrial
Control Science (CICS) at Newcastle University will conduct a week long
school presenting modern control strategies in an industrial context.  The
course is aimed at engineers and control practitioners providing practical
knowledge and tools for design, analysis and implementation of both
conventional and advanced control strategies.  It would also be beneficial
to academics or research students in gaining exposure to how  modern
control theory can be effectively applied to practical problems.  The
course features a problem based learning format where the material is
motivated by and applied to real world problems, and then followed up by
hands-on laboratory sessions.

FIVE MODULES COVERING:
Review of Conventional Control
Introduction to Model Based Control
Advanced Model Based Control
Soft Sensing and Kalman Filtering
Fuzzy Logic and Intelligent Control

HANDS-ON LABORATORY SESSIONS:
Description, motivation and solutions of actual industrial control
applications

For more detailed information and registration forms contact:
Lisa Crisafulli, CICS, University of Newcastle, Callaghan  NSW  2308,
Australia
Ph:Int + 61 49 217126   Fax:Int + 61 49 601712
email:lisac@ee.newcastle.edu.au

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Contributed by  Raimund J. Ober 
                Xu Huang 

        UPDATE ON SCAD DATABASE --

        July 1995


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               Systems and Control Archive at Dallas

                 gopher:          gopher.utdallas.edu
                 ftp address:     ftp.utdallas.edu
                 IP number:       129.110.10.14
                 Worldwide web:   URL: http://www.utdallas.edu/research/scad
                 queries (email): scad@utdallas.edu

New contents:
=============

eletters:
=========

   Number 83

Links to systems and control groups:
====================================

  The following new link has been added:
    University of Catania, Italy: DEES Systems and Control Group.


SCAD ADDRESS LIST:
==================

   Recently we have started an address list for systems
   and control people.

   Already 200 people have added their addresses to the list.

   To register your, simply:
      - go to SCAD with your web browser
      - 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:
    Type
       gopher -p 1/research/scad gopher.utdallas.edu
    or
       gopher gopher.utdallas.edu
    Select `UT-Dallas Research' and then `Systems and Control Archive at
    Dallas'
  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

       scad@utdallas.edu

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



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              *              Positions                 *
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Contributed by Shuzhi S. GE (elegesz@leonis.nus.sg)

POSTDOCTORAL FELLOWSHIP POSITION AT NATIONAL UNIVERSITY OF SINGAPORE

The Centre for Intelligent Control, Department of Electrical Engineering,
National University of Singapore kindly invites applications for a
post-doctoral fellship position available in 1995. The successful applicant
will do research work on a project entitled ``Parallel Adaptive Controls in
Digital Servo-Mechanisms''.  The duration is for 2 years, and the the salary
is approximately S$3,000 per month.

Main research activities within the Centre include the following theoretical
areas: Nonlinear and Adaptive Control Theory, Robot Control, Intelligent
Control, Knowledge Based Control Systems, Expert Control Systems, Neural
Network and Fuzzy Logic Control, System Modelling and Identification, Robust
H-infty Control, Variable Structural Control among others.  We also have a
number of industrial application oriented projects ranging from servo
control, robot control, to process control.  We have a very friendly and
vibrant working environment.

Applicants should have attained a doctoral degree in Systems and Control
Engineering, Electrical Engineering, Mechanical Engineering or a closely
related field by the starting date of the appointment.  Candidates must have
strong interest and ability in research and real-time implementation.

The deadline of application is 1 SEPTEMBER, 1995. The successfully applicant
is expected to join us as soon as possible.  Interested persons please send
their application resumes, copies of three best papers and arrange to send
three confidential reference letters to me at the address below.  If you
have any query, please do not hesitate to contact me.

Dr Shuzhi S. GE
Department of Electrical Engineering
National University of Singapore
10 Kent Ridge Crescent
Singapore 0511
Tel: (+65) 772 6821
Fax: (+65) 779 1103
Email: elegesz@leonis.nus.sg

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Contributed by: Kevin Moore 

                       POSTDOCTORAL RESEARCH FELLOWSHIPS

Two one-year postdoctoral research fellowships are available with the
Measurement and Control Engineering Research Center (MCERC)
in the College of Engineering at Idaho State University.

The first position involves applied research in support of a funded project
on the control of gas-metal arc welding processes. This position may be
renewed for a second year, depending on satisfactory performance and
continued funding.

The successful applicant for the second position will collaborate with MCERC
faculty to conduct interdisciplinary research related to measurement and
control, and assist in proposal development, in one of the following areas:
Active control of flexible structures; Modelling, measurement, and control
of chaotic thermal-hydraulic systems; Control of aerospace systems and
spacecraft; Nuclear reactor measurement and control systems.

Both positions require a Ph.D. in engineering or a related area, with a
strong interdisciplinary background that includes: (i) knowledge of
measurement system design techniques; (ii) current state-of-the-art in
control theory (especially robust control theory and the principles of
intelligent control, including neural networks and fuzzy logic); and (iii)\
subject area background in one of the areas listed above. Candidates who
lack only their dissertation will be also considered.

Stipend is $30-40K/year, depending upon qualifications, plus medical
benefits.  One position requires teaching one course per semester. The
positions begin September 1, 1995 and continue through August 31, 1996.
Salary is prorated to reflect actual time of service.

Send inquires and resume with the names of three references to: Dr. Kevin L.
Moore, Director, Measurement and Control Engineering Research Center,
College of Engineering, Box 8060, Idaho State University, Pocatello, ID
83209 Phone:(208)236-4188, FAX:(208)236-4538, email: moorek@isu.edu

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Contributed by: Michel Gevers (gevers@auto.ucl.ac.be)

        ACADEMIC POSITION AT CATHOLIC UNIVERSITY OF LOUVAIN


Academic Position at Catholic University of Louvain (Louvain-la-Neuve -
Belgium),  Department of Mathematical Engineering.

The Department of Mathematical Engineering invites applications for an
academic appointment in mathematical engineering, with preference for one
of the following topics :

- numerical analysis and scientific computing
- stochastic modelling
- discrete mathematics, combinatorics, graphs and algorithms
- mathematical system theory
- optimisation and variational calculus.

The applicant will have a teaching load in applied mathematics. Applicants
should demonstrate both breadth of interest and promise in research and
teaching.  Tenured positions will be considered but appointment rank will
depend on the candidates and their records ofaccomplishment. Applicants
will be expected to teach in French, possibly after a certain transition
period.

The Catholic University of Louvain is a 550 year old university located
on a new university campus created in 1972 in Louvain-la-Neuve. The new
campus now has over 20,000 students and about 5,000 members of staff.

The Mathematical Engineering Department hosts research programs in the
different topics listed above. The department also has close ties with the
Center for Operations Research and Econometrics (CORE), the Center for
Systems Engineering and Applied Mechanics (CESAME) and the Institute for
Pure and Applied Mathematics (MAPA).

The applicant should have a doctoral degree in engineering (or equivalent),
postdoctoral experience, and a recognized scientific publications record.
The appointment will start in October 1996.

The applicants should furnish a curriculum vitae, a list of publications,
an abstract of five selected publications, the name and address of four
referees including two belgian referees who are not members of UCL, before 15
December 1995 to the Rector of the university:

Recteur de l'Universite Catholique de Louvain,
1, Place de l'Universite
B-1348 Louvain la Neuve.
Belgium

(The reference number of the position N 96/16 should be mentioned)

Further information can be obtained from :

Professor Georges Bastin
Head of the Department of Mathematical Engineering
Catholic University of Louvain
Batiment Euler
4, avenue Georges Lemaitre
B-1348 Louvain-la-Neuve
BELGIUM

Fax : + 32 10 47 21 80
Email : bastin@auto.ucl.ac.be


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              *                Books                   *
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Contributed by: A. Murat Tekalp 

                ***NEW BOOK: Digital Video Processing***

                         by A. Murat Tekalp
       Prentice Hall, ISBN 0-13-190075-7, available August 1995

This 550 page textbook covers various aspects of digital video processing
technology in a tutorial style suitable for classroom teaching or
self-study.

CONTENTS
--------
PART 1: Representation of Digital Video
Chapter 1  Basics of Video
Chapter 2  Time-Varying Image Formation Model
Chapter 3  Spatio-Temporal Sampling
Chapter 4  Sampling Structure Conversion
PART 2: Two-Dimensional Motion Estimation
Chapter 5  Optical Flow Methods
Chapter 6  Block-Based Methods
Chapter 7  Pel-Recursive Methods
Chapter 8  Bayesian Methods
PART 3: Three-Dimensional Motion Estimation and Segmentation
Chapter 9  Methods Using Point Correspondences
Chapter 10 Optical Flow and Direct Methods
Chapter 11 Motion Segmentation
Chapter 12 Stereo and Motion Tracking
PART 4: Video Filtering
Chapter 13 Motion Compensated Filtering
Chapter 14 Noise Filtering
Chapter 15 Restoration
Chapter 16 Standards Conversion
Chapter 17 Superresolution
PART 5: Still Image Compression
Chapter 18 Lossless Compression
Chapter 19 DPCM and Transform Coding
Chapter 20 Still Image Compression Standards
Chapter 21 Vector Qunatization, Subband Coding and Other Methods
PART 6: Video Compression
Chapter 22 Interframe Compression Methods
Chapter 23 Video Compression Standards
Chapter 24 Model-Based Coding
Chapter 25 Digital Video Systems
APPENDICES:
Appendix A: Markov and Gibbs Random Fields
Appendix B: Basics of Segmentation
Appendix C: Kalman Filtering

For further info, please contact:
A. Murat Tekalp                tekalp@ee.rochester.edu
Karen Gettman, Prentice-Hall   kgettman@cup.portal.com
Ann Sullivan, Prentice-Hall    ann@prenhall.com


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              *               Journals                 *
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Contributed by Jan H. van Schuppen (J.H.van.Schuppen@cwi.nl)

Mathematics of Control, Signals, and Systems (MCSS)

CALL
Readers of this eletter are encouraged to submit their work to MCSS.
The backlog that existed years ago has been completely cleared.
For instance, several papers that were received in the second half of
1994 are already appearing in the 1995 volume.
MCSS publishes one volume (four issues) per year, with about 400 pages.

AIMS AND SCOPE
MCSS publishes original and high-quality research papers concerned with
mathematically rigorous, system theoretic aspects of control and signal
processing.

HANDLING OF PAPERS
A paper is assigned to an Associate Editor, who makes a publication
recommendation on the basis of a detailed and careful evaluation by
two or more referees.
Evaluation criteria used include originality, substance, and quality
of exposition. To maintain the highest possible standards of quality,
and to pursue the goal of timely publication, only a small fraction of
submitted papers can be expected to be accepted. The journal strives
for a fast turnaround in the review process.

SUBMISSION
A typical paper submitted to MCSS consists of an average of 20 pages
of LaTeX in 12 point article style with a maximum of 25 such pages,
50 double-spaced typewritten pages, or the equivalent.
If a paper is longer than the maximum number of pages then authors
are requested to provide a justification for the added length in
their cover letter.
Associate Editors and reviewers are instructed to pay careful
attention to conciseness as an important characteristic of good
mathematical exposition.

The address for submissions is:

  J.H. van Schuppen
  Co-Editor MCSS
  CWI
  P.O. Box 94079
  1090 GB Amsterdam
  The Netherlands

Authors wishing to inquire about the scope of the journal
or the suitability of a particular topic are encouraged
to contact the Editors informally, preferably by electronic mail,
prior to submission. Email inquires regarding submission should
be addressed to mcss@cwi.nl.


WWW PAGES OF MCSS

http://www.cwi.nl/cwi/departments/BS3/mcss.html
http://www.math.rutgers.edu/~sontag/mcss.html

These pages are identical; the access is faster to one of these
depending on the geographical area from which the request originates.

The MCSS Home Page provides general information on the
journal, as well as information regarding the submission
of manuscripts. Two additional pages can be accessed from
the main page:
- a page which provides information on the tables of
  contents of recently appeared issues of MCSS and on
  papers accepted for publication but not yet published;
- and a page which provides information on the tables of
  contents of the older volumes of MCSS.

We look forward to your contributions!
Brad Dickinson, Jan van Schuppen, and Eduardo Sontag


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Contributed by John Baillieul, Editor-in-Chief
IEEE Transactions on Automatic Control

                IEEE TRANSACTIONS ON AUTOMATIC CONTROL

        Table of Contents - Volume 40, Number  7 - July, 1995

___________________________________________________________________________
Scanning the Issue
___________________________________________________________________________
PAPERS

Structural Infinitesimal Perturbation Analysis (SIPA) for Derivative
        Estimation of Discrete Event Dynamic Systems .. L. Dai and Y. C. Ho

Equivalence Preserving Transformations for Timed Transition Models
        ....................................... M. Lawford and W. M. Wonham

Robust Parametric Transfer Function Estimation Using Complex
        Logarithmic Frequency Response Data
        ....................... P. Guillaume, R. Pintelon, and J. Schoukens

An Euler Lagrange Inclusion  for Optimal Control Problems
        ................................ M. de R. de Pinho and R. B. Vinter

Machine Learning and Nonparametric Bandit Theory
        ......................................... T. L. Lai and S. Yakowitz

Control of Systems Without Drift via Generic Loops ........... E. D. Sontag

An Adaptive Controller Based on Disturbance Attenuation
        .................................... D. F. Chichka and J. L. Speyer

____________________________________________________________________________
TECHNICAL NOTES AND CORRESPONDENCE

Optimal Routing into Two Heterogenteous Service Stations with Delayed
        Information ............................................ D. Artiges

Weak L_2 Stability ............................................... O. Konig

Sufficient Stability Condition for a Sampled-Data Systems with
        Digital Controller ................ J. Tokarzewski and A. W. Olbrot

Residual Bounds for Discrete-Time Lyapunov Equations
        ...................................... A. R. Ghavimi and A. J. Laub

The Infimal Controllable and N-Observable Superpredicate of A Given
        Predicate ....................... S. Takai, T. Ushio, and S. Kodama

Comments on "A New Method of Weitching Surface Design for Multivariable
        Variable Structure System" ............................. C. M. Kwan

Necessary and Sufficient Conditions for Robust Stability of Linear
        Systems with Multiaffine Uncertainty Structure
        ......................................... B. T. Polyak and J. Kogan

Worst Case Systems Identification in H\infty: Validation of a Priori
        Information, Essentially Optimal Algorithms, and Error Bounds
        ............................. J. Chen, C. N. Nett, and M. K. H. Fan

Approximation of Discrete-Time State-Space Trajectories Using Dynamic
        Recurrent Neural Networks
        .......................... J. Jin, P. N. Nikiforuk, and M. M. Gupta

On Infinity Norms as Lyapunov Functions for Linear Systems .... A. Polanski

Optimal Quadratic Filtering of Linear Discrete-Time Non-Gaussian
        Systems ................. A. De Santis, A. Germani, and M. Raimondi

Deterministic LQ Preview Tracking Design ......... E. Mosca and A. Casavola

Nonlinear H\infty Control and Its Application ot Rigid Spacecraft
        ........................................................... W. Kang

Addendum to "Extensions and Generalizations of Smoothed Perturbation
        Analysis in a Generalized Semi-Markov Process Framework"
        ............................................. M. C. Fu and J.-Q. Hu

Absolute Stability in Linear Delay-Differential Systems: Ill-Posedness
        and Robustness ........................................ J. Louisell

An Asymptotic Model Observer for LInear Autonomous Time Lag Systems
        .................................. J. Leyva-Ramos and A. E. Pearson

A New Formula for the Log-Likelihood Gradient for Continuous-Time
        Stochastic Systems ................................... R. P. Leland

Adaptive Observers with Arbitrary Exponential Rate of Convergence
        for Nonlinear Systems ...................... R. Marino and P. Tomei

Algorithmic Modeling of TES Processes ..... P. R. Jelenkovic and B. Melamed

The Computational Complexity of Decentralized Discrete-Event Control
        Problem ................................ K. Rudie and J. C. Willems

Stabilization of Linear Systems Under Nonlinear Stable Diagonal
        Perturbations ....................... A. N. Gundes and M. G. Kabuli

Design of Observers for Descriptor Systems ..... M Darouach and M. Boutayed

Erratum to "Passivity-Based Control of Nonlinear Flexible Multibody
        Systems" ............. A. G. Kelkar, S. M. Joshi, and T. E. Alberts


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

Table of Contents for:

CIRCUITS, SYSTEMS, AND SIGNAL PROCESSING

Vol. 14, No. 4, 1995:

On the local qualitative behavior of differential-algebraic equations,
   Sebastian Reich

Model conversions of uncertain linear systems using a scaling and
squaring geometric series method,
   Leang S. Shieh, Jingfong Gu, and Jason S. H. Tsai

Robust estimation and signal detection with dependent nonstationary data,
   D. R. Halverson

Further improved 2-D lattice filter structure employing missing
reflection coefficients,
   Aysin Ertuzun, Ahmet H. Kayran, and Erdal Panayirci

The prime and generalized nullspaces of right regular pencils,
   N. Karcanias and G. Kalogeropoulos

Impulse stress wave propagation in elongated bodies: Apparent deviations
from circuit realizability principles,
   Dov Hazony

New time-frequency distribution,
   Soo-Chang Pei and Er-Jung Tsai

A set of necessary stability conditions for $m$-D nonlinear digital filters,
   Peter H. Bauer

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Contributed by:   Richard Brualdi 


LINEAR ALGEBRA AND ITS APPLICATIONS
Contents Volume 225, August 1995

Omer Egecioglu (Santa Barbara, California)
Parallelogram-Law-Type Identities 1

Khalid Benabdallah (Montreal, Quebec, Canada) and
Bernard Charles (Montpellier, France)
Orbits of Invariant Subspaces of Algebraic Linear Operators 13

Gong-ning Chen and Hui-pin Zhang (Beijing, China)
Note on Products of Bezoutians and Hankel Matrices 23

Lawrence A. Harris (Lexington, Kentucky)
Factorizations of Operator Matrices 37

Joao F. Queiro and Eduardo M. Sa (Coimbra, Portugal)
Singular Values and Invariant Factors of Matrix Sums and Products 43

Jong-Shenq Guo, Wen-Wei Lin, and Chern-Shuh Wang
(Hsinchu, Taiwan)
Numerical Solutions for Large Sparse Quadratic
Eigenvalue Problems 57

Olga Azenhas (Coimbra, Portugal)
Opposite Littlewood-Richardson Sequences and Their
Matrix Realizations 91

L. Yu. Kolotilina (St. Petersburg, Russia)
Two-Sided Bounds for the Inverse of an H-Matrix 117

P. R. Graves-Morris (Bradford, West Yorkshire, England) and
C. R. Johnson (Williamsburg, Virginia)
Determinantal Inequalities for Diagonally Signed Matrices and an
Application to Gram-Cauchy Matrices 125

Daniel Alpay (Beer-Sheva, Israel) and Philippe Loubaton
(Paris, France)
The Partial Trigonometric Moment Problem on an Interval:
The Matrix Case 141

Achouri Abdelhak (Montpellier, France)
Approximation Positive Contractante en Norme Trace 163

S. Bouali and J. Charles (Montpellier, France)
Extension de la Notion D'Operateur D-Symetrique. II 175

C. Mallol and R. Varro (Montpellier, France)
A Propos des Algebres Verifiant x[3]=u(x)3x 187

Fridrich Sloboda (Bratislava, Slovakia) and
Fiorella Sgallari (Bologna, Italy)
On Iterative Solution of Linear Equations Arising in BVPs of ODEs 195

L. Brugnano and D. Trigiante (Firenze, Italy)
Polynomial Roots: The Ultimate Answer? 207

Tomasz Szulc (Poznan, Poland)
Some Remarks on a Theorem of Gudkov 221

Huang Tin-Zhu (Chengdu, Sichuan, People's Republic of China)
A Note on Generalized Diagonally Dominant Matrices 237

Author Index 243

*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.**
Contributed by:   thomas@siam.org


       SIAM Journal on Control and Optimization
           SEPTEMBER 1995 Volume 33, Number 5
                        CONTENTS

Toward a Geometric Theory in the Time-Minimal Control of Chemical
Batch Reactors
B. Bonnard and J. de Morant

Neumann Boundary Value Problems for Second-Order Ordinary
Differential Equations Across Resonance
Wang Huaizhong and Li Yong

Equivalent Conditions for the Solvability of the Nonstandard LQ-
Problem for Pritchard-Salamon Systems
Bert Van Keulen

Exact Controllability and Stabilization of a Vibrating String with
an Interior Point Mass
Scott Hansen and Enrique Zuazua

Optimal Stopping of a Discrete Markov Process by Two Decision
Makers
Krzysztof Szajowski

On Nonlinear Optimal Control Problems with State Constraints
Monica Motta

The Linear-Quadratic Control Problem Revisited
Tomasz Bielecki

Tools for Semiglobal Stabilization by Partial State and Output
Feedback
Andrew Teel and Laurent Praly

Consistency of Primal-Dual Approximations for Convex Optimal
Control Problems
Stephen E. Wright

Error Bounds for Piecewise Convex Quadratic Programs and
Applications
Wu Li

A Perspective Theory of Motion and Shape Estimation in Machine
Vision
B. K. Ghosh and E. P. Loucks

Uniqueness for Viscosity Solutions of Nonstationary Hamilton-
Jacobi-Bellman Equations Under Some A Priori Conditions (with
Applications)
William M. McEneaney

Control Time for Gravity-Capillary Waves on Water
Russell M. Reid

An Embedding of Domains Approach in Free Boundary Problems and
Optimal Design
P. Neittaanmaki and D. Tiba

Second-Order Optimality Conditions in Sets of L^infinity Functions with
Range in a Polyhedron
Joseph C. Dunn

*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.**
Contributed by Huibert Kwakernaak

                                AUTOMATICA

                              Table of contents
August, 1995                                             Issue  31:8



Regular Papers

M. R. James, S. Yuliar          Numerical approximation of the H(infinity)
                                norm for nonlinear systems

Kemin Zhou                      Relative/multiplicative model reduction for
                                unstable and non-minimum- phase systems

M. Corless, P. Tsiotras, J.     A novel approach to the attitude control of
M. Longuski                     axi-symmetric spacecraft

J. Chen, C. N. Nett             Sensitivity integrals for multivariable
                                discrete-time systems

J. Kadlec, F. M. F. Gaston,     The block regularised parameter estimator and
G. W. Irwin                     its parallelisation

C. Moons, B. de Moor            Parameter identification of induction motor
                                drives

S. A. Barton                    Two dimensional movement controlled by a
                                chaotic neural network

H. G. Chiacchiarini, A.         Variable structure control with a
second-order
Palazoglu, et al.                sliding condition: Application to a steam
                                generator

B. J. Allison, J.               Dual adaptive control of chip refiner motor
E.Ciarniello,                   load


Brief Papers

I.Kaminer, A. M.Pascoal, P.     A velocity algorithm for the implementation
of
P.Khargonekar, E. E. Coleman     gain-scheduled controllers

Technical Communiques

S. O. Reza Moheimani, A. V.     A connection between H-infinity control and
Savkin, I. R. Petersen          the absolute stabilizability of discrete-time
                                uncertain linear systems

V. Blondel, C. Lundvall         A rational test for strong stabilization

A. L. Tits, M. K. H. Fan        On the small mu theorem


*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.**
Contributed by: Tor A. Johansen (torj@regtek.sintef.no)


                        TABLE OF CONTENTS
Modeling, Identification, and Control (MIC), Vol. 16, No. 3, July 1995


Monica Ostenstad and Terje Sira, "Temperature and flow
   distribution in planar SOFC stacks" ...................... 119

David Di Ruscio, "A method for the identification of state
   space models from input and output measurements" ......... 129

Are Willersrud, Fred Godtliebsen and Trygve Thomessen,
   "Automatic programming of grinding robot restoration of
   contours" ................................................ 145

Geir Horn and Svein Linge, "Analytical generation of the
   dynamical equations for mechanical manipulators" ......... 155

L. K. Alm and T. A. Nygaard, "Flow over complex terrain
   estimated by a general purpose Navier-Stokes solver" ..... 169


Accumulated index and subscription information for MIC is available
from http://www.itk.unit.no/publikasjoner/mic/mic.html.

*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.**
Contributed by:  Da-Wei Gu  


                    CALL   FOR   PAPERS

                 Robust  Control  Applications

                     A Special Issue of

         "International Journal of Robust and Nonlinear Control"


In the last decade or so, the Control Community has witnessed major
developments in robust control systems theory and design. Theoretical
achievements, such as H-inf optimisation, mu-synthesis and parametric
optimisation, to name just a few, have emerged. Also encouraging is
the extension of robust control techniques into the area of nonlinear
systems. At the same time, many researchers have been working hard to
apply the newly developed results to real, industrial projects. However,
by and large, practising control engineers are still unfamiliar with
these new theories and the accompanying design techniques. It is now
important for researchers to demonstrate the successes of advanced robust
control techniques to industry and to arouse interest among industrial
control engineers. Therefore, it has been decided to organise a special
issue of the "International Journal of Robust and Nonlinear Control" on
Robust Control Applications.

The theme of the special issue will be industrial applications of robust
control methods. Applications may be in any industrial sector. The design
methods are not limited either, and may include
   -- H-inf/H-2 optimisations
   -- Mu-synthesis
   -- Nonlinear finite L2-gain control
   -- Variable structure control
   -- Adaptive control
   -- Neural/fuzzy control, etc

Papers describing significant and interesting applications are solicited
for the special issue, which is scheduled for late 1996 or early 1997.

Five copies of the manuscript should be submitted to Da-Wei Gu or Ian
Postlethwaite by 1 January, 1996 for review. For contributor guidelines,
please refer to a recent issue of the "International Journal of Robust and
Nonlinear Control".


IMPORTANT DATES:
                 Paper submission deadline:   1  January, 1996
                 Notification of decision:    15 May,     1996
                 Final manuscript submission: 1  July,    1996


GUEST EDITORS:
                Da-Wei Gu             Ian Postlethwaite

                      Control Systems Research
                      Department of Engineering
                       University of Leicester
                          Leicester  LE1 7RH
                                U.K.

               Tel: + 44-116 2522560   Tel: + 44-116 2522546
               E-mail: dag@le.ac.uk    E-mail: ixp@sun.engg.le.ac.uk

                         Fax: + 44-116 2522619



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              *                                        *
              *              Conferences               *
              *                                        *
              ******************************************

*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.**
Contributed by: Alessandro De Luca

                  FINAL PROGRAM ECC-1995

The Final Program of the ECC95 in now available in electronic form via
the following ftp commands from a host machine

         ftp labrob.ing.uniroma1.it

         user: ecc95
         password: ecc95

         get ECC95_FinalProgram/AdvProgram.txt

Alessandro De Luca
ECC95 Secretariat

*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.**
Contributed by: S. Bittanti  bittanti@elet.polimi.it


                   European Colloquium
                         on the

      APPLICATIONS OF NONLINEAR AND ADAPTIVE CONTROL
                 TO PHYSICAL SYSTEMS

 Workshop organized in connection with the ECC conference in Rome

European HCM network on
Nonlinear and Adaptive Control
Roma Saturday September 9 1995
Universita' di Roma La Sapienza


PROGRAM

9.00-9.15  Welcome address

FIRST MORNING SESSION
  Chairman: Bjorn Wittenmark
  Lund Institute of Technology

9.15 - 10.00  David Clarke; Oxford University
              Adaptive Control of a Materials Testing Machine
10.00 - 10.10 Karl J. Astrom; Lund Institute of Technology
              Friction in Control - an overview
10.10 - 10.40 Carlos Canudas-de-Wit and Pablo Lischinsky; Lab. d'Automatique
              de Grenoble:
              Adaptive Friction Compensation with Partial Knowledge of
              Dynamic Friction Parameters.
10.40 - 11.00 Henrik Olsson; Lund Institute of Technology
              Limit Cycles in Control Loops with Friction


SECOND MORNING SESSION
Chairman: Henk Nijmeijer
University of Twente

11.30 - 12.15 Guido O. Guardabassi; Politecnico di Milano
              Adaptive and Nonlinear Excitation Control of Synchronous
              Generators
12.15 - 12.45 Karl J. Astrom and Jorgen Malmborg; Lund Institute of
Technology
              A Mixed Control Strategy for a HVAC (Heating Ventilation and
              Airconditioning) Problem
12.45 - 15.00 Lunch

AFTERNOON SESSION
Chairman: Pedro Albertos
Universidad Politecnica de Valencia

15.00 - 15.45 Romeo Ortega; Universite' de Compiegne, (in col. with
University
              of Twente and Lab. d'Automatique de Grenoble
              Passivity-Based Control of Euler-Lagrange Systems: Applications
              to Mechanical, Electromechanical and Power Electronic Systems
15.45 - 16.15 Bernard Brogliato; Lab. d'Automatique de Grenoble
              Control of mechanical  systems with unilateral constraints


16.45         Meeting of the steering committee


Information

The registration fee is 80000 Lire, which can be payed at the registration
desk of the European Control Conference on September 5, 1995, or at the
registration desk of the Colloquium, which will be open between 8.30 and
9.00 of September 9. The fee includes the lunch and a set of photocopies
with the  main contributions of the Colloquium.

Colloquium Chairman

Sergio Bittanti
Politecnico di Milano
Piazza Leonardo da Vinci 32
20133 Milano (Italy)
Email: bittanti@elet.polimi.it

*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.**
Contributed by:  Mohamed Zribi  

                              CALL FOR PAPERS

                        FOURTH INTERNATIONAL CONFERENCE ON
                     CONTROL, AUTOMATION, ROBOTICS AND VISION
                                ICARCV'96

                             3-6 December 1996
                          Westin Stamford, Singapore

The Fourth International Conference on Control, Automation, Robotics and
Vision, will be held in Singapore on 3-6 December 1996. This conference is
organized by the School of Electrical and Electronic Engineering, Nanyang
Technological University. The theme of ICARCV'96 is "Emerging Technologies
for the Twenty First Century".  The conference will provide a forum for
Control and Automation professionals, manufacturing engineers and academic
researchers to exchange up-to-date technical knowledge and experience. The
conference will focus on theory abd applications. In addition to the
technical sessions, there will be plenary, invited and tutorial sessions.


Papers describing original work in, but not limited to, the following
technical areas are invited:

AUTOMATION                              ROBOTICS
Instrumentation Systems                 Robot Control
Flexible Manufacturing Systems          Mobile Robots and Navigation
Process Automation                      Task Planning
Man-machine Interaction                 Intelligent Sensors and Actuators
Computer Integrated Manufacturing       Kinematics and Simulation
Factory Modelling and Automation        Autonomous Systems
Petri Nets and Applications             Industrial Applications

CONTROL                                 COMPUTER VISION
Control Methodologies and Applications  Image Processing and Interpretation
Estimation, Ident. and Fault Detection  2-D and 3-D Scene Analysis
Robust and Adaptive Control             Motion Analysis and Tracking
Nonlinear Control                       Pattern Recognition and Applications
Intelligent Control                     Learning in Computer Vision
Process Control                         Parallel Algorithms for Computer
Vision
Motion Control                          Applications of Computer Vision

EMERGING TECHNOLOGIES                   NEURAL NETWORKS & FUZZY SYSTEMS
Mechatronics
Virtual Reality                         REAL-TIME SYSTEMS
Micro-electromechanical Systems
Electric Vehicl Technology              SIGNAL PROCESSING & APPLICATIONS
Intelligent Vehicle Highway Systems


SUBMISSION PROCEDURE:

Submit three copies of abstract and extended summary, in English, formated as
follows. The first page should include the title, the name of the author,
affiliation, mailing address, Fax number, e-mail address, preferred technical
area, and a 100-word abstract. The second and succeeding pages should include
the title and up to 1500-word extended summary. The description must be
comprehensive enough to allow assessment of the work's originality and
contributions.

Upon acceptance, authors will be required to register and present their
papers.  Papers will be published in the conference proceedings only if at
least one of the authors is officially registered. The length of the final
papers in the proceedings will be limited to a maximum of 5 pages (5 mats A4
size, single space, font size 10, two columns format), including figures,
tables and references.


SELECTED PAPERS WILL BE CONSIDERED FOR PUBLICATION IN INTERNATIONAL
JOURNALS.


INVITED SESSIONS:
The Technical Programme Committee is soliciting proposals for invited
sessions focusing on topics related to the theme of ICARCV'96. Prospective
organizers should submit proposals to the Technical Programme Co-Chairman
(at the same address as the one given below) by the 31 May 1996.

BEST PAPER AWARD:
An award will be given to the author(s) of the best paper. The selection
will be made at the conference based on both the technical contents and the
presentation. The winner(s) will be chosen by the Technical Programme
Committee members in consultation with the International Advisory Committee
members.

Please submit three copies of the abstract and extended summary for review
to:

Dr Chan Sai Piu
c/o Instrumentation and System Engineering Lab
School of Electrical and Electronic Engineering
Nanyang Technological University
Nanyang Avenue, Singapore 2263
Republic of Singapore
Tel : (65) 799-5471
Fax : (65) 791-2687
E-mail: icarcv96@ntuix.ntu.ac.sg

  AUTHOR'S SCHEDULE :

  31 May     1996   Receipt of extended summary of the papers
  15 July    1996   Notification of Acceptance
  31 August  1996   Submission of Camera Ready Manuscripts

TRAVEL

Specially priced Airline Tickets for attending the conference may be
available from our official airline, SINGAPORE AIRLINES.

ORGANIZER:

    School of EEE, Nanyang Technological University

CO-SPONSORS:

    The Institution of Engineers, Singapore (IES)
    Economic Development Board (EDB)
    GINTIC, Singapore
    Instrumentation and Control Society (ICS)
    National Computer Board (NCB)
    National Science and Technology Board (NSTB)
    Singapore Computer Society(SCS)

IN-COOPERATION WITH:
    IEEE Robotics and Automation Society
    IEEE Control Systems Society
    IEEE Systems Man and Cybernetics

*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.**
contributed by : rodellar@etseccpb.upc.es

         FIRST EUROPEAN CONFERENCE ON STRUCTURAL CONTROL
                       29-- 31 May 1996
                       Barcelona, Spain

SCOPE OF THE CONFERENCE: The aim is to bring together scientists, engineers
and practitioners interested in the multi--disciplinary interaction of
topics like vibration isolation, sensors, actuators, identification,
optimization, active and hybrid control, health monitoring, damage
detection, smart materials and others on structural systems, such as those
in civil, mechanical, naval, aerospace engineering and related fields,
subject to excitation sources such as earthquakes, wind, traffic, noise,
machinery and others.

OFFICIAL LANGUAGE: English.

LOCATION: The Conference will be held at the School of Civil Engineering of
the Technical University of Catalonia, located at Barcelona.

CALL FOR PAPERS: Presentations are solicited on the topics of the Conference
describing research and/or application results. Only one presentation is
allowed to each participant. Three copies of a 1-page abstract suitable for
printing and distribution at the Conference should be submitted to the
Sci. Committee at the address shown below by 15 November 1995. The abstract
should be typed single--spaced on white paper measuring 21x29.7 cm (A4) and
include the following: (1) Title; (2) Author(s) with full name(s) and
affiliation(s); (3) Mailing address for each author; and (4) Abstract giving
enough detail to clearly understand the scope, originality and results of
the described work. Abstracts will be reviewed and acceptance will be
notified by 15 January 1996.

PROCEEDINGS: Presentations at the Conference are expected to be accompanied
by a full paper which will be due in camera--ready form at the Conference
dates.  Accepted papers will be included in the Proceedings published by an
international publisher. Further details regarding submission of
camera--ready papers will be provided with the notification of acceptance
for the Conference.

REGISTRATION: The registration fee is 500 DM, which covers attendance to all
lectures and sessions, coffee breaks, Conference banquet, a bound copy of the
Abstracts at the Conference and a copy of the Proceedings mailed after the
publication.

Registration before 1 April 1996 will have a reduced fee of 400 DM.

SCIENTIFIC COMMITTEE: A. Baratta (Universita di Napoli Federico II,
Italy)(co--chairman), A. Barbat (Universitat Politecnica de Catalunya,
Spain), F. Bourquin (Laboratoire Central des Ponts et Chausses, France),
A. Carotti (Politecnico di Milano, Italy), F. Casciati (Universita di Pavia,
Italy), A. Del Grosso (Universita di Genova, Italy), P. Fajfar (University
of Ljublijana, Slovenia), L. Faravelli (Universita di Pavia, Italy), C.M.
Friend (Cranfield University, U.K.), H. Irshik (J. Kepler University,
Austria), F. Lopez Almansa (Universitat Politecnica de Catalunya, Spain),
J. Rodellar (Universitat Politecnica de Catalunya, Spain)(co--chairman).

IMPORTANT DATES:

-- Submission of Abstracts by 15 November 1995
-- Notification of acceptance by 15 January 1996
-- Reduced fee registration by 1 April 1996
-- Conference days 29--31 May 1996
-- Full papers given during the Conference days
-- Review and publication of proceedings after two months

ADDRESSES for authors to submit abstracts and individuals to ask for future
announcements, registration information and final Conference program:

ACS -- c/o Dept. of Structural Mechanics
via Abbiategrasso 211    I27100 Pavia -- Italy
Telephone: 39-382-505456   Fax: 39-382-528422   e-mail:marco@dipmec.unipv.it

1ECSC -- Department of Applied Mathematics III, School of Civil Engineering,
U.P.C. Campus Nord, Modul C--2  08034--Barcelona -- Spain
Fax: 34-3-4016504           e-mail: 1ecsc@etseccpb.upc.es

*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.**
Contributed by:  A Stephen Morse 


                               Announcing
                                   the
                          Block Island Workshop
                                   on
                   Control Using Logic-Based Switching
                                 at the
                          Spring House Hotel
                                   on
                       Block Island, Rhode Island

                     September 29 - October 2, 1995


                               Supported by
                                  the

                        National Science Foundation
                           Army Research Office
                      Yale University Faculty of Engineering
              Princeton University Department of Electrical Engineering


The theme of this workshop is control using logic-based switching.  By a
logic-based switching controller is meant a controller whose subsystems
include not only familiar dynamical components such as integrators, summers,
gains, etc., but a nontrivial logical component as well. More often than not
the predominately logical component within such a system is called a
supervisor, a mode changer, a gain scheduler, a reference governor or
something similar.  Within the past few years there has been a growing
interest in determining what might be gained by utilizing hybrid controllers
of this type. Toward this end detailed analyses, simulation studies and
laboratory experiments of such systems have been initiated in a variety of
disciplines including adaptive control, gain scheduling, control of
nonholonomic systems, motion control, and the control of saturation
constrained systems.


The primary purpose of the workshop is to bring together a small number of
specialists working within the area for the purpose of crystallizing
concepts, problem formulations, and approaches. We will also encourage the
attendance of a limited number additional individuals who are either already
working in the area or who desire to learn more about opportunities for
research in the area.

Because of space constraints attendance is limited to approximately
thirty-five individuals.  The workshop will be centered around approximately
fifteen consecutive, 45 minute invited presentations given over a two day
period.


Block Island is about 70 minutes by ferry off the coast of Rhode Island.
The island can also be reached by air. Because of limited air and ferry
connections, participants should plan to spend the nights of September 29,
30, and October 1 on the island. Those traveling from the west coast may
prefer to spend the night of the 28th enroute. On the other hand is not
difficult to travel from Block Island to any destination in North America
within a single day .



Partial List of Confirmed Participants:

L. Bushnell          P. Caines             J. Chandra
E. Davison           M. Dahleh             J. Guckenheimer
R. Kosut             S. Kulkarhi           S. Marcus
H. McClamroch        D. Miller             S. Mitter
A. Morse             K. Narendra           F. Pait
K. Poolla            P. Ramadge            M. Safonov
J. Shamma            G. Zames



For further information please either email Ms. Lesley Kent at

lesley@sysc2.eng.yale.edu

or call her at

203-432-2211

*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.**
Contributed by: Pedro Albertos   < pedro@aii.upv.es >

              4 th SYMPOSIUM ON LOW COST AUTOMATION
       FACULTAD DE INGENIERIA - UNIVERSIDAD DE BUENOS AIRES
                   BUENOS AIRES - ARGENTINA
                   SEPTEMBER 13 / 15, 1995


LCA '95 Secretariat
ASOCIACION ARGENTINA DE CONTROL AUTOMATICO
CALLAO 220 - 1 -B-
BUENOS AIRES - 1022
REPUBLICA ARGENTINA

TECHNICAL PROGRAM

The technical program consist of:

AC      Plenary sessions
PS1     Hierarchical fuzzy controllers =

        Z. Binder, P. Horacek (FRANCE), Gihan Nagib (EGYPT)

PS2     Low cost shopfloor control in small and medium sized
        enterprises        

        Heinz-H. Erbe (GERMANY)

PS3     Supervision and monitoring of  furnaces

        F. Muratori, et al (ARGENTINA)

Technical sessions

WM1 - Basic controllers
WM2 - Sensors
WM3 - Process control applications
WA1 - Fuzzy control
WA2 - Actuators & drives I
WA2 - Flexible systems  I
WE1 - Electric power generation
WE2 - Actuators and drives II
WE3 -  Flexible systems II
TM1 - Neural Networks & intelligent control
TM2 - Control theory I
TM3 - Metal & siderurgical. applications
TA1 - Process simulation
TA2 - Manufacturing
TE1 - Knowledge based systems
TE2 - LC sensors
TE3 - Electric power systems
FM1 - Modelling
FM2 - Control theory II
FM3 - Fault detection & measurement

4th IFAC INTERNATIONAL SYMPOSIUM ON LOW COST AUTOMATION
Address
ASOCIACION ARGENTINA DE CONTROL AUTOMATICO
AV. CALLAO 220 - 1(B
BUENOS AIRES - 1022
REPUBLICA ARGENTINA
Tel / Fax:      +54 1 3726746
                +54 1 3743780




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