NA Digest Sunday, January 18, 2004 Volume 04 : Issue 03

Today's Editor:
Cleve Moler
The MathWorks, Inc.

Submissions for NA Digest:

Mail to

Information via e-mail about NA-NET: Mail to


From: David Chopp <>
Date: Mon, 12 Jan 2004 00:51:45 -0600
Subject: Norbert Wiener Prize Awarded to James Sethian

The AMS/SIAM Nobert Weiner Prize in Applied Mathematics has been awarded
to James Sethian. Sethian is Professor of Mathematics at the University of
California at Berkeley, and Head of the Mathematics Department of the Lawrence
Berkeley National Laboratory. The AMS press announcement reads as follows:

January 8, 2004

PROVIDENCE, RI---James Sethian of the University of California, Berkeley,
is receiving the 2004 Norbert Wiener Prize in Applied Mathematics.
Presented every three years by the American Mathematical Society, the
Wiener Prize is awarded for outstanding contributions to applied
mathematics in the highest and broadest sense. The prize will be awarded
today at the Joint Mathematics Meetings in Phoenix, Arizona.

Sethian is being honored for his seminal work on the computer
representation of the motion of curves, surfaces, interfaces, and wave
fronts, and for his brilliant applications of mathematical and
computational ideas to problems in science and engineering. The prize
citation states: "A particularly noteworthy aspect of Sethian's work is
that he pursues his ideas from a first formulation of a mathematical model
all the way to concrete applications in national laboratory and industrial
settings; his algorithms are currently distributed in widely available
packages. Sethian's work is a shining example of what applied mathematics
can accomplish to benefit science as a whole."

The complete citation as well as background material and accompanying statement
may be found at

David Chopp


From: Max Gunzburger <>
Date: Tue, 13 Jan 2004 07:55:43 -0500
Subject: Olga Ladyzhenskaya

I am sad to report the news of the death of Olga Ladyzhenskaya on
January 12. Although a giant of mathematics, she is not known as a
numerical analyst; however, she did provide the first (and still one of
the few) rigorous proofs of the convergence of a finite difference
method for the Navier-Stokes equations. More important, her seminal
work on partial differential equations had tremendous and lasting
influence on those who specialize in numerical PDEs. For example, she
is the "L" of the celebrated LBB condition that arises in mixed finite
element discretizations of the Stokes and Navier-Stokes equations.

Olga Ladyzhenskaya overcame great odds of a personal and political
nature to become one of the most influential mathematicians of her
generation. This gentlewoman will be very much missed by her family and
friends and by the scientific community.


From: Cleve Moler <>
Date: Tue, 13 Jan 2004 11:17:38 -0500 (EST)
Subject: New Book, Numerical Computing with MATLAB

I am very pleased to make this announcement to the NA Digest community.

"Numerical Computing with MATLAB" is a new textbook for an introductory
course in numerical methods, MATLAB, and technical computing. The emphasis
is on informed use of mathematical software. The topics include

Introduction to MATLAB
Linear equations
Zero finding
Least squares
Ordinary differential equations
Random numbers
Fourier analysis
Eigenvalues and singular values
Partial differential equations

George Forsythe initiated such a course at Stanford University in the late
1960s. Textbooks by Forsythe, Malcolm, and Moler, and Kahaner, Moler, and
Nash that evolved from the Stanford course were based upon libraries of
Fortran subroutines.

This textbook is based on MATLAB. A collection of over nearly 70 M-files
form an essential part of the book. Many of the over 200 exercises involve
modifying and extending the programs provided with the book. The book also
makes extensive use of computer graphics, including interactive graphical
expositions of numerical algorithms.

Two editions of the book are being published. An electronic edition published
by the MathWorks is available now on the Web. A traditional printed edition
published by SIAM, the Society for Industrial and Applied Mathematics, will
be available in the second quarter of 2004.

The URL for the electronic edition is:

-- Cleve


From: Mike Powell <>
Date: Fri, 16 Jan 04 19:12:16 GMT
Subject: Software for Unconstrained Minimization without Derivatives

Unconstrained Minimization without Derivatives

Recently, after about 2 years of development, I finished writing
some Fortran software for unconstrained minimization without derivatives.
I believe that most results of academic research should be available
free of charge, and I am delighted when my work is useful. Therefore
please let me know by e-mail if you would like to receive a copy of the
Fortran. My address is

The name of the software is NEWUOA (NEW Unconstrained Optimization
Algorithm). It is a development of UOBYQA (Math. Prog. B, Vol. 92, pp.
555-582, 2002), which is unsuitable for large n (the number of variables),
because the quadratic models of UOBYQA are constructed by interpolation
to (n+1)(n+2)/2 values of the objective function. On the other hand, the
number of interpolation conditions in NEWUOA is a parameter, the value
2n+1 being recommended, which reduces the magnitude of the routine work
of each iteration from n**4 to between n**2 and n**3. Thus NEWUOA has
solved problems successfully with up to 200 variables, which would be far
too onerous for UOBYQA. The freedom in each new quadratic model of NEWUOA
is taken up by minimizing the Frobenius norm of the change to the second
derivative matrix of the model.

No report is available yet that describes all the details of NEWUOA,
but I intend to write one in the next 6 months. The work has taken so
long, because rounding errors have caused severe loss of accuracy in an
updating calculation. I found an adequate cure to this damage last June,
which is presented in the report "On updating the inverse of a KKT matrix"
(Number DAMTP 2004/NA01, University of Cambridge). That report is on the
web at the address, where one clicks on Numerical
Analysis and then on Reports, because I do not yet have a proper home page
myself. I hope that the NEWUOA software will be helpful to many readers.

January 16th, 2004 Michael J.D. Powell


From: Esmond Ng <>
Date: Fri, 16 Jan 2004 13:11:17 -0800
Subject: Report on the SVG Meeting

The SVG Meeting

The SVG meeting, a one and a half day workshop celebrating the 60th
birthdays of Jim Varah, Alan George, and Michael Saunders, was held at
Stanford University on January 9-10, 2004. The meeting featured
light-hearted talks in a festive atmosphere, combining scientific
computing and anecdotes from the honorees' past. Approximately 80
people attended the meeting, many of whom came from great distances.
Issues that were addressed at the meeting included the symmetrizability
of the 3-by-3 SVG matrix; the meaning of the acronym MXS; the EFGH
properties; the mysterious genealogical connection among Chebyshev,
Markov, and the honorees; the Matlab algorithm that was used to create
the meeting's mugs, courtesy of Cleve Moler; and many others. Iain Duff
mildly roasted the honorees in a banquet dinner speech. Showing his
hospitality, Gene Golub added two more to the uncountable number of
reception parties at his house. At the end of the meeting, the honorees
were given a chance to provide their rebuttals!

The program for the meeting and a collection of photos from the meeting
are now available at

The meeting was partially supported by a donation from FEMLAB.


From: Gaston Gonnet <>
Date: Mon, 12 Jan 2004 13:31:10 +0100
Subject: Vector Operations in C

Last Saturday I gave a short presentation on the (big) surprises you
may get when coding vector operations in C at the SVG meeting. (The
SVG meeting was organized by Gene Golub and colleagues to honor Mike
Saunders, Jim Varah and Alan George). I think that the material may
be of interest to many other people in this group. In particular I
would be happy to receive any explanation (even partial) to some of
the surprising results.

The relevant parts can be found under:

Best wishes, Gaston Gonnet.


From: Ray Tuminaro <>
Date: Thu, 15 Jan 2004 10:09:46 -0800
Subject: Slides from the Saddle Point Systems Meeting

Slides from the Saddle Point Systems in Computational Mechanics Meeting

Slides are now available at
from the recently concluded meeting:

Solution Methods for Saddle Point Systems in Computational Mechanics
December 3-6, 2003
Santa Fe, New Mexico

This meeting was organized by Sandia National Labs and Stanford University
and supported by the CSRI. Authors and titles are given below (in order
of their presentation at the meeting).

Author Title

Pavel Bochev A discourse on regularization and finite element
solution of saddle-point problems

Andy Wathen Preconditioning for the Saddle-point Problems of
Incompressible Fluid Mechanics

Howard Elman Preconditioning Strategies for Models of Incompressible Flow

Joe Pasciak Iterative Solution of Symmetric Saddle Point Problems

Gene Golub A Preconditioner for Generalized Saddle Point Problems
A Nonsymmetric Preconditioning for Saddle Point Problems

Chris Newman Saddle Point Systems that arise in exponential integration
of the incompressible Navier-Stokes equations

Dan Loghin Schur Complement Preconditioners for Elliptic Systems of PDE

Daniel White Saddle Point Problems in Computational Electromagnetics

Valeria Simoncini Block Preconditioners for mixed finite element formulations
of the magnetostatic problem

Peter Arbenz Multilevel preconditioners for solving eigenvalue problems
occurring in the design of resonant cavities

Clark Dohrmann Saddle Point Problems in Elasticity: Motivation and Methods
of Solution

Mark Adams Algebraic multigrid methods for discretized saddle point
problems with application to contact problems

Eric de Sturler Preconditioners for Generalized Saddle-Point Problems

Chen Greif Block Preconditioning for Saddle Point Linear Systems

Ray Tuminaro Meros/TSF: Block Preconditioning Software

Michael Saunders Interior Methods for Optimization, with application to
Maximum Entropy problems

Omar Ghattas Saddle Point Systems in PDE-Constrained Optimization


From: Xiaoye S. Li <>
Date: Fri, 16 Jan 2004 14:06:28 -0800
Subject: Bay Area Scientific Computing Day

Lawrence Berkeley National Laboratory will host the Fifth
Bay Area Scientific Computing Day (BASCD) on Saturday, March 13, 2004.
The BASCD is an informal gathering to encourage the interaction and
collaboration of researchers in the field of computational science
and engineering from the San Francisco Bay Area. This event provides
a great venue for junior researchers to present their work to the
local community, and for the Bay Area scientific computing and
computational science communities at large to exchange views on
today's multidisciplinary computational challenges and
state-of-the-art developments.

The Fifth BASCD will include 10 technical talks, a 60-minute panel,
and 10 poster presentations. In addition, it will include breakfast,
coffee and lunch breaks that provide opportunities for networking.

The registration form, the detailed logistics, and the program will be
posted at the following web stie:

Tony Drummond (
Parry Husbands (
Sherry Li (
Osni Marques (


From: S. S. Ravindran <>
Date: Thu, 15 Jan 2004 17:14:05 -0600
Subject: Distinguished Lecture at University of Alabama in Huntsville

University of Alabama in Huntsville Mathematical
Sciences Department 2004 Distinguished Lecture

Friday, February 13th - 1:45 p.m.
McDonnell Douglas Auditorium, Rm 100, Material Science Building
University of Alabama in Huntsville

Title: "Centroidal Voronoi tessellations: algorithms and applications"

Prof. Max Gunzburger
Department of Mathematics and CSIT
Florida State University


Centroidal Voronoi tessellations (CVTs) are special Voronoi diagrams
for which the generators of the diagrams are also the centers of mass
(with respect to a given density function) of the Voronoi cells. CVTs
have many uses and applications, several of which we discuss. These may
include data compression, image segmentation, clustering, cell biology,
territorial behavior of animals, resource allocation, grid generation
in volumes and on surfaces, meshless computing, hypercube sampling, and
reduced-order modeling. We then discuss deterministic and probabilistic
methods for determining CVTs, including some new probabilistic methods
that are amenable to parallel processing.

Bio: Prof. Max Gunzburger is the Francis Eppes Distinguished
Professor of Mathematics at Florida State University. Before moving to
Florida, he was Distinguished Professor of Mathematics and Chairman of
Department of Mathematics at Iowa State University (1986-2002). Prior
to that he was professor of Mathematics at Virginia Tech (1986-96),
Carnegie Mellon University (1981-89) and University of Tennessee
at Knoxville (1976-81).
Prof. Gunzburger obtained his Ph.D., M.S. and B.S from New York
and was a NRC post-doctoral Research Fellow at Naval Ordinance
His specialties include numerical analysis, finite element methods,
mathematical modeling, partial differential equations, fluid
mechanics, flow control and superconductivity.
He is the editor-in-chief of SIAM Journal in Numerical Analysis.


From: Jerzy Wasniewski <>
Date: Sun, 11 Jan 2004 20:46:24 +0100 (MET)
Subject: Workshop in Denmark on High Performance Computing

June 20-23, 2004

Jack Dongarra, University of Tennessee and Oak Ridge Nat. Lab.
Kaj Madsen, Technical University of Denmark
Jerzy Wasniewski, Technical University of Denmark

June 20, 2004: Two tutorials: Interval analysis and automatic
June 21-23, 2004: PARA'04 Workshop sessions

PLACE: Technical University of Denmark, Lyngby, Denmark

The emphasis of the PARA'04 meeting is shifted to High-Performance
Computing (HPC). The ongoing development of ever more advanced
computers provides the potential for solving increasingly difficult
computational problems. However, given the complexity of modern
computer architectures, the task of realizing this potential needs
careful attention. For example, the failure to exploit a computer's
memory hierarchy can degrade performance badly. A main concern of HPC
is the development of software that optimizes the performance of a
given computer.

The high cost of state-of-the-art computers can be prohibitive for
many workplaces, especially if there is only an occasional need for
them. A solution to this problem can be network computing, where
remote computing facilities are exploited via the INTERNET. Aspects of
network computing will be included in the PARA'04 Workshop.

A limited number of contributed talks of no more than 20 minutes each
will be selected for the PARA'04 Workshop. Short abstracts of at most
one page should be submitted by January 31, 2004 to the address given
under "SUBMISSIONS" below. The text should be in pure ASCII format.
Notification of acceptance will be made by February 29, 2004.

After acceptance, extended abstracts of at most 7 pages should be
submitted by April 15, 2004. Two format versions are needed: latex
and either postscript or pdf. The pictures must be formatted as
encapsulated postscript files (eps). The extended abstracts will be
handed out at the beginning of the workshop.

After the workshop, full papers of at most 10 pages will be included
in the workshop proceedings to be published in the Springer series
Lecture Notes in Computer Science (LNCS). The full papers, formatted
according to the rules of the LNCS, should be submitted by September
15, 2004. The author's instructions and style files for the LNCS can
be found at
These papers will be reviewed.

Some of the papers may be selected for publication in special issues
of regular scientific journals.

Abstracts (at most 1 page): January 31, 2004
Notification of acceptance: February 29, 2004
Extended abstracts (at most 7 pages): April 15, 2004
The PARA'04 Workshop: June 20-23, 2004
Proceedings papers (at most 10 pages): September 15, 2004

All documents should be sent to

Attn. Jerzy Wasniewski
PARA'04, IMM, DTU, Bldg. 321
DK-2800 Lyngby, Denmark


For more information about the PARA'04 Workshop, including the invited
speakers, minisymposia, payments, registration and hotel reservations,
please visit

On behalf of the PARA'04 Workshop Organizing Committee,

Jerzy Wasniewski


From: Roderick Melnik <>
Date: Sun, 11 Jan 2004 23:49:36 +0100
Subject: Workshop in Florida on Coupled Problems


This is the Final Call for contributions to the Workshop on Coupled Problems,
Processes, and Phenomena (Modelling, Control, and Analysis), an embedded
session at the World Congress of Nonlinear Analysts in Florida, USA,
June 30 - July 7, 2004.

Please consult the webpage of the workshop at
and contact one of the organizers not later than January 29, 2004.


From: John Butcher <>
Date: Sat, 17 Jan 2004 13:02:30 +1300 (NZDT)
Subject: Workshop in New Zealand on Differential Equations

Workshop on
Computational Partial and Ordinary Differential Equations
(First announcement)
The University of Auckland, New Zealand
21 - 23 April 2004

The purpose of this workshop is to investigate the relationship between
numerical methods for partial and for ordinary differential equations.
It is hoped that new insights will be found into the computational needs
of modelling using complex partial differential systems and the use of
novel methods for time stepping based on stiff ordinary differential
equation systems.

Sponsored by:
The New Zealand Institute of Mathematics and its Applications

The invited speakers will include:
Michael Baines, University of Reading, England
Joseph Flaherty, Rensselaer Polytechnic Institute, USA
Zahari Zlatev, National Environmental Research Institute, Denmark

Invited lectures and contributed lectures

John Butcher,
Helmut Podhaisky,


From: Dheeraj Bhardwaj <>
Date: Sat, 17 Jan 2004 09:46:35 +0530 (IST)
Subject: Workshop in India on e-science

Computational Grid Infrastructure and
Scientific & Engineering Applications
(In conjunction with the INDO-UK workshop)

February 22-23, 2004

Department of Computer Science & Engineering
Indian Institute of Technology Delhi-110016, India


More generally e-Science refers to the development of the next generation
infrastructure to support computationally based science. This involves the
effective utilization of distributed computing, storage and networking
resources owned by different organizations but used by individuals both
within and outside these organizations. These resources are collectively
referred to as a Computational Grid.

e-Science envisages that large scale science will be increasingly carried out
in distributed global collaborations enabled by the Internet. A feature of
these collaborations is that they will require efficient access to very large
data collections and very large scale computing resources and will use
distributed visualization to support a high-level of user access.


From: Wolfgang Hartmann <>
Date: Wed, 14 Jan 2004 08:37:23 -0500
Subject: Statistics Minisymposium at PARA'04

I'm in the process of organizing a Minisymposium about
"Computationally Expensive Methods in Statistics"
at the Technical University of Denmark in Lyngby close to Copenhagen.
Are there any numerically interested Statisticians who want to participate?
We are still looking for a few papers.

Wolfgang M. Hartmann (
Dept. of Data Mining
SAS Institute Inc.
Cary NC


From: David Gilsinn <>
Date: Wed, 14 Jan 2004 09:19:38 -0500
Subject: Symposium at NIST in Honor of Christoph Witzgall

After a long and distinguished career, Dr. Christoph Witzgall retired from
the Mathematical and Computational Sciences Division of the National
Institute of Standards and Technology (NIST), Gaithersburg, Maryland in
October, 2003. In honor of his many contributions to Operations Research,
Optimization, and Numerical Analysis, a symposium on "Topics in Operations
Research" will be held at NIST on May 13, 2004. The featured speakers at the
symposium will be Jack Edmonds (University of Waterloo), Saul Gass
(University of Maryland), Alan Goldman (Johns Hopkins University), Karla
Hoffman (George Mason University), Jim Lawrence (George Mason University),
Doug Shier (Clemson University), Josef Stoer (Universitat Wurzburg), William
Stone (NIST), Francis Sullivan (IDA CCS), Paul Boggs (Sandia National Lab).
For further information about the symposium please contact David Gilsinn at, (301) 975-3491.

David E. Gilsinn
100 Bureau Dr., Stop 8910
Gaithersburg, MD 20899-8910


From: Zhangxin Chen <>
Date: Wed, 14 Jan 2004 15:38:44 -0600
Subject: Conference in Shanghai on High performance Computing

Announcement and Call for Papers and Organizing Minisymposia

High Performance Computing and Applications (HPCA 2004)
August 8--10, 2004
Shanghai University, Shanghai, China

* China Computer Federation
* National Natural Science Foundation of China
* Shanghai Computer Society
* Shanghai University
* Xi'an Jiaotong University

Advisory Committee:
Jialin Cao (Chair), Vice President of Shanghai University, China
James G. Glimm, State University of New York at Stony Brook, USA
David Keyes, Columbia University, USA
Sanli Li, Shanghai University and Tsinghua University
Jiachang Sun, Institute of Software, Academia, China
Wei Zhao, Texas A&M University, USA

Scientific Committee:
Shiyi Chen, The Johns Hopkins University, USA
Yaosong Chen, Peking University, China
Jim Douglas, Jr., Purdue University, USA
Richard E. Ewing, Texas A&M University, USA
Roland Glowinski (Chair), University of Houston, USA
Vipin Kumar, University of Minnesota, USA
Do Y. Kwak, KAIST, South Korea
Hermilo R. Leon, Mexican Institute of Petroleum, Mexico
Kaitai Li, Xi'an Jiaotong University, China
Xinda Lu, Shanghai Jiaotong University, China
Yuanle Ma, Tsinghua University, China
Peter Moore, Southern Methodist University, USA
Depei Qian, Xi'an Jiaotong University, China
Gengfeng Wu, Shanghai University, China

Invited Speakers:
Wei Cai, University of North Caroline, Charlotte, USA
Shiyi Chen, John Hopkins University, USA
Zhangxin Chen, Southern Methodist University, USA
Zhiming Chen, Chinese Academy of Sciences, China
Jim Douglas, Jr., Purdue University, USA
Craig Douglas, University of Kentucky and Yale University, USA
Weinan E, Princeton University, USA
Richard E. Ewing, Texas A&M University, USA
Roland Glowinski, University of Houston, USA
Jiwen He, University of Houston, USA
Song Jiang, IAPCM, China
Kaitai Li, Xi'an Jiaotong University, China
Xiaolin Li, SUNY at Stony Brook, USA
Tsorng-Whay Pan, University of Houston, USA
Yuehong Qian , Princeton University, USA
Thomas Russell, University of Colorado at Denver, USA
Jiachang Sun, Institute of Software,Academia Sinica, China
Junping Wang, Colorado School of Mines, USA
Nong Xiao, National University of Defense Technology, China
Pingwen Zhang, Peking University, China
Wu Zhang, Shanghai University, China
Jun Zou, Chinese University of Hong Kong, China

Conference Themes:
(1) Numerical Algorithms and Solutions:
Numerical ODEs & PDEs, numerical integral equations,
finite difference, volume, and element methods,
boundary element methods, Monte Carlo methods,
numerical linear algebra, multiscale methods, and
treatment of uncertainty.
(2) Parallel Computing:
Parallel solvers, multigrid and multilevel methods,
domain decomposition methods, and parallel computing strategies.
(3) Novel High Performance Computing Architecture and Platform
General architectures for high performance computing systems,
toolkits, development environments, protocols, and languages,
performance evaluation models and tools, and QoS models and tools.
4) Applications:
Scientific computing for physical problems, computational fluid dynamics
mathematical modeling, numerical simulation, engineering applications,
computer visualization, and industrial applications

Conference Format:
The conference will consist of 45-minute invited
talks and 30-minute minisymposia contributed talks.
The conference language is English.

Conference Proceedings:
Proceedings of presented and refereed
papers will be published.

Call for Papers and Organizing Minisymposia:
Participants wishing to organize a minisymposium or present a paper
in a field related to the conference themes are invited to submit
a one-page abstract in English to
Please include the address, telephone, fax, and e-mail address of
the primary contact person.


From: Hugo Scolnik <>
Date: Wed, 14 Jan 2004 19:43:05 -0300
Subject: Conference in Turin on System Modeling and Optimization

We are organizing the 22nd IFIP TC 7 Conference on System Modeling and
Optimization ,Turin, Italy, July 18-22, 2005

In particular, we would like to invite you to contribute a paper or survey
to a special minisymposium on Large Scale Nonlinear Programming. The papers
can be submitted to one of the following journals:

(i) Annals of Operations Research [AOR]
(ii) Computational Optimization with Applications [COAP]
(iii) Applied Mathematics and Optimization [AMO].

According to the number of journal-quality papers a full special issue could
be published. Otherwise, the papers will be handled as regular submissions
to the journals.

We would appreciate very much if you could contact other colleagues potentially interested in this conference.


From: ICCM <>
Date: Fri, 16 Jan 2004 10:35:27 +0600
Subject: Conference in Novosibirsk on Computational Mathematics

The Second Announcement
The International Conference on Computational Mathematics
June, 21-25, 2004
Novosibirsk, Akademgorodok

Conference Organizers

The Institutes of Computational Mathematics and Mathematical Geophysics,
Computational Modeling, and Computational Technologies, Siberian Branch of
Russian Academy of Sciences (ICT SB RAS, NOVOSIBIRSK)

Conference Topics
The ICCM-2004 will cover the following subjects presented
both in invited and contributed papers:
1. Computational algebra
2. Approximation of functions and quadrature formulas
3. Numerical solution of differential and integral equations
4. Stochastic modeling and Monte Carlo methods
5. Parallel numerical algorithms

Minisymposia on some related topics will be held.

The following events will be organized within the framework
of the Conference:

- an International Workshop isiCAD on Constraint-based Approaches
and Methods of Mathematical Modeling for Intelligent CAD/CAM/CAE
Systems. The organizers will be the LEDAS company and ICMMG SB RAS For more detail, please see

- a Workshop "The Distributed Information-Computational Resources
and Mathematical Modeling - DICR&MM ". The organizers will
Trofimuk United Institute of Geology, Geophysics and Mineralogy SB RAS,
and the Novosibirsk State
University. For more detail, please see

The application containing the registration form and
the abstract of the paper should be filled in on the
Conference site before February, 9, 2004.

The Conference site is

The Conference e-mail is

For more detail, please see


From: Wim Michiels <>
Date: Fri, 16 Jan 2004 16:51:42 +0100
Subject: Conference in Belgium on Time-Delay Systems

5th IFAC Workshop on Time-Delay Systems - TDS04
K.U. Leuven, Belgium
September 8-10, 2004

Electronic submission system opened

The objective of this IFAC workshop is to bring together specialists
in the field of control of time-delay systems. High level contributions
on the many aspects of this research area, ranging from theory over
numerics to various applications, are awaited. Contributions on related
domains (e.g. control of uncertain systems, 2D and nD systems,
tele-operated control systems) will be considered with great interest,
provided they contain relations with time-delay systems.

In order to provide a joint forum for and create interaction between
specialists in control and numerical mathematics, and to increase
industrial participation, special attention will be paid to:
- numerical methods for time-delay systems
- applications, emphasizing delay effects in
telecommunication systems

- S. Drakunov (Tulane University)
- R. Srikant (University of Illinois at Urbana-Champaign)
- G. Stepan (Budapest University of Technology and Economics)

Submission of a manuscript: March 15, 2004
Submission of an invited session proposal: March 15, 2004

Submissions should be done electronically using the
procedure available at the conference web-site.


From: Zdzislaw Jackiewicz <>
Date: Fri, 16 Jan 2004 15:16:10 -0700 (MST)
Subject: Conference in Tempe on Volterra and Delay Equations

Second Announcement

The Third International Conference on The Numerical Solution
of Volterra and Delay Equations

May 18-21, 2004, Arizona State University, Tempe

This conference will be devoted to the computational and applied
aspects of Volterra and delay equations. These include functional
differential equations (delay, advanced and neutral), Volterra integral
equations, and Volterra integro-differential equations. There will be
both invited lectures and contributed talks at the meeting. In addition,
there will be ample time for informal discussions. Conference topics
include but are not limited to:

* Convergence and order properties of numerical methods
* Stability analysis and construction of highly stable methods
* Implementation aspects: software development and testing
* Applications of Volterra and delay equations
* Partial delay differential equations
* Numerical solution of stochastic delay differential equations
* Numerical solution of ordinary differential equations

The Conference is supported by the National Science Foundation and by
Arizona State University (Department of Mathematics, College of Liberal
Arts and Science, Office of the Vice-President for Research, and
Center for Systems Science and Engineering). Limited funds are available
for partial support of participants, in particular for students, junior
scientists, and members of groups which have traditionally been
underrepresented in the mathematical sciences. To apply for such assistance
please contact the conference organizers by March 1, 2004.

A special issue of Applied Numerical Mathematics will be devoted solely
to this Conference. This issue will be similar to Vol. 9, No. 3-5(1992)
of this journal that followed the First Conference and Vol. 24, No. 2-3
(1997) that followed the Second Conference (Volterra Centennial). Papers
for journal publication will be selected from among invited and contributed
papers and will meet the usual high refereeing standards of the journal.
The deadline for submitting the manuscripts is July 1, 2004.

The deadline for registration and receiving titles and abstracts is
March 31, 2004. The regular registration fee for the meeting is $80 and the
student registration is $40. Registration fee covers all social functions,
including the conference dinner.

Interested persons are requested to announce their intention to participate
and/or present contributed papers by contacting the organizers by e-mail,
by visiting the conference webpage at

or by contacting the organizers at the address

Zdzislaw Jackiewicz
Department of Mathematics
Arizona State University
Tempe, Arizona 85287

The organizers, Alan Feldstein and Zdzislaw Jackiewicz


From: Melanie Lindsay <>
Date: Thu, 15 Jan 2004 11:12:56 -0500
Subject: Postdoctoral Position at Purdue University

Post Doc position available starting immediately, to collaborate with
multi-university team in forensic simulation and visualization of
buildings and other large structures subjected to earthquakes, wind
loads, or crashes.

Successful candidate will have a PhD and experience using commercial
software such as Abacus, LS-Dyna, and/or Nastran. Candidate should have
expertise in geometric computing, numerical linear algebra, and/or
structural mechanics.

Please send resume to the project leader, Prof. Christoph Hoffmann
(, Computer Science, Purdue University.

Purdue is an equal opportunity/equal access employer.


From: B. P. Sommeijer <>
Date: Tue, 13 Jan 2004 15:06:46 +0100 (MET)
Subject: PhD Student Position at CWI, Amsterdam

The research group "Nonlinear PDEs: Analysis and Scientific Computing" at
CWI, the Center for Mathematics and Computer Science in Amsterdam,
The Netherlands, offers a 4-year position for a PhD Student in


within the research project


which is funded by NWO (Netherlands Organization for Scientific Research)
through the Program "Computational Life Sciences".

The project consists of 3 PhD positions. The other two are at the Free
University Amsterdam (Prof. dr. S.A.L.M. Kooijman, Faculty of Earth and
Life Sciences), and at the University of Utrecht (Prof. dr. ir. H.A. Dijkstra,
IMAU, Physical Oceanography), respectively.

Research topic

The application field is the dynamics of phytoplankton in oceans. In particular,
the ability of phytoplankton to bind atmospheric carbon dioxide and transport
it into the deep oceans in the form of organic carbon, a phenomenon which is
termed the 'organic carbon pump'. This is of great interest for oceanography
and climate research, since it reduces the greenhouse effect on earth.
The project combines a biological model (Free University) with a high-resolution
ocean flow model (IMAU) and advanced numerical methods for calculating transport
of nutrients and biomass (CWI).


Successful candidates must have knowledge of the numerical analysis of PDEs.
The candidate that we are looking for is keen on working at the interface of
numerical analysis, bio-mathematical modelling and computational science, so
as to successfully co-operate with the other two PhD students.
A necessary condition for fulfilling the vacancy is a M.Sc. in (numerical)
mathematics, computational science, computational fluid dynamics, or a
comparable expertise.

Terms of employment

The salary with related employment conditions is according to regulations
for OIOs (Onderzoekers in Opleiding). Moreover CWI offers attractive working
conditions, including flexibility and help with housing for foreigners.


You are invited to send an application, no later than February 20 2004, to

Dr. Ben Sommeijer
P.O. Box 94079,
1090 GB Amsterdam,
the Netherlands,

Your application should provide a description of your mathematical education,
your motivation for applying for this position, your CV, and examination marks.
Students who are about to finish their M.Sc thesis are also encouraged to apply.

For further information you can download the granted project description from (see also


From: Lisa Stanley <>
Date: Tue, 13 Jan 2004 12:25:50 -0700 (MST)
Subject: Postdoctoral Position at Montana State University

Postdoctoral position
Department of Mathematical Sciences
Montana State University

The Department of Mathematical Sciences at the Montana State
University invites applications for a postdoctoral research position
dedicated to Computational Methods in Sensitivity Analysis for
Sensor/Actuator Placement in Control Systems for Micro Air-vehicles.
The initial appointment is for 1 year with the possibility of
extension to a 2nd year, according to mutual agreement.

Requirements: A PhD in Computational or Applied Mathematics,
or in a related area, is required by start date. A strong research
background and experience programming in MATLAB or C++ are
essential. The applicant must have experience in the
numerical solution of ordinary and partial differential equations.
Preferred applicants have experience in Optimal Control Theory and
its applications, including computational methods for Optimal
Control Problems. Experience and/or familiarity with sensitivity
analysis is also preferred.

The salary is $41,000 per year + Benefits + Travel, and the
successful applicant is expected to begin employment in the
fall of 2004 or sooner. Electronic applications are preferred,
but interested applicants are free to use standard mail. Send
a letter of interest, a curriculum vita and three letters of
recommendation to the following address.

Postdoc Search Committee
c/o Dr. Lisa G. Stanley
Dept. of Mathematical Sciences
2-214 Wilson Hall
Montana State University
Bozeman, MT 59717-2400.

Additional information is available at

ADA/AA/EO/Vet. Pref.


From: Iain Duff <>
Date: Wed, 14 Jan 2004 18:51:59 GMT
Subject: Contents, IMA Journal of Numerical Analysis

Contents of Volume 24, Number 1

pp i

D. Breda, S. Maset and R. Vermiglio
Computing the characteristic roots for delay differential equations.
pp 1-19

B.M. Brown and M. Marletta
Spectral inclusion and spectral exactness for PDEs on exterior domains.
pp 21-43

T.P. Wihler
Locking-free DGFEM for elasticity problems in polygons.
pp 45-75

S. Chen, D. Shi, and Y. Zhao
Anisotropic interpolation and quasi-Wilson element for narrow quadrilateral
pp 77-95

X. Xu, S.H. Lui and T. Rahman
A two-level additive Schwarz method for the Morley nonconforming element
approximation of a nonlinear biharmonic equation.
pp 97-122

A. Toselli and X. Vasseur
Domain decomposition preconditioners of Neumann-Neumann type for
hp-approximations on boundary layer meshes in three dimensions.
pp 123-156

B. Bialecki, M. Ganesh and K. Mustapha
A Petrov-Galerkin method with quadrature for elliptioc boundary value problems.
pp 157-177


From: Thomas Hogan <>
Date: Mon, 12 Jan 2004 13:20:43 -0500 (EST)
Subject: Contents, Journal of Approximation Theory

Table of Contents: J. Approx. Theory, Volume 124, Number 1, September 2003

Online at

P\'{e}ter V\'{e}rtesi
In Memoriam---Lev Brutman (1939--2001)

F\'{e}lix Mart\'{\i}nez-Gim\'{e}nez and Alfredo Peris
Universality and chaos for tensor products of operators

Gy\"{o}rgy G\'{a}t
Ces\`{a}ro means of integrable functions with respect to unbounded
Vilenkin systems

Bin Han
Vector cascade algorithms and refinable function vectors in
Sobolev spaces

M. Ganichev and N. J. Kalton
Convergence of the weak dual greedy algorithm in $L_p$-spaces

Ushangi Goginava
Uniform convergence of Ces\`{a}ro means of negative order of double
Walsh-Fourier series

J. Rubi\'{o}, J. L. D\'{\i}az-Barrero and P. Rubi\'{o}
On the solvability of the Birkhoff interpolation problem

Carl de Boor and Allan Pinkus
The B-spline recurrence relations of Chakalov and of Popoviciu

Michael Cwikel
The $K$-divisibility constant for couples of Banach lattices

Carl de Boor
Erratum to ``A divided difference expansion of a divided difference''
[J.~Approx.\ Theory 122 (2003) 10--12]

Table of Contents: J. Approx. Theory, Volume 124, Number 2, October 2003

Online at

Tapani Matala-aho
On the values of continued fractions: $q$-series

Masahiko Ito
Convergence and asymptotic behavior of Jackson integrals associated with
irreducible reduced root systems

Peter Wingren
Sequence spaces of spline functions on subsets and $l^\infty$-spaces,

Lev M. Bregman, Yair Censor, Simeon Reich and Yael Zepkowitz-Malachi
Finding the projection of a point onto the intersection of convex sets
via projections onto half-spaces

Shunsheng Guo and Qiulan Qi
Strong converse inequalities for Baskakov operators

S. P. Sidorov
Approximation of the $r$th differential operator by means of linear
shape preserving operators of finite rank

Han Xuli
Multi-node higher order expansions of a function

A. Branquinho, J. Bustamante, A. Foulqui\'{e} Moreno and
G. L\'{o}pez Lagomasino
Normal indices in Nikishin systems

D. Barrios Rolan\'{\i}a, G. L\'{o}pez Lagomasino and E. B. Saff
Determining radii of meromorphy via orthogonal polynomials on the
unit circle

Table of Contents: J. Approx. Theory, Volume 125, Number 1, November 2003

Online at

G. T. Deng
Incompleteness and closure of a linear span of exponential system in a
weighted Banach space

Chong Li and Hong-Kun Xu
Porosity of mutually nearest and mutually furthest points in
Banach spaces

Alicia Cachafeiro, Francisco Marcell\'{a}n and
Juan J. Moreno-Balc\'{a}zar
On asymptotic properties of Freud-Sobolev orthogonal polynomials

L. Klotz and A. Lasarow
Extremal problems for matrix-valued polynomials on the unit circle and
applications to multivariate stationary sequences

Margareta Heilmann
Eigenfunctions of Durrmeyer-type modifications of Meyer-K\"{o}nig and
Zeller operators

Aleksandra \v{C}i\v{z}me\v{s}ija, Josip Pe\v{c}ari\v{c} and
Lars-Erik Persson
On strengthened Hardy and P\'{o}lya-Knopp's inequalities

E. Belinsky, F. Dai and Z. Ditzian
Multivariate approximating averages

D. S. Lubinsky
Best approximation and interpolation of $(1+(ax)^2)^{-1}$ and
its transforms

Daniyal M. Israfilov
Uniform convergence of the Bieberbach polynomials in closed smooth
domains of bounded boundary rotation

M. Bello Hern\'{a}ndez and J. M\'{\i}nguez Ceniceros
Strong asymptotic behavior for extremal polynomials with respect to
varying measures on the unit circle

Table of Contents: J. Approx. Theory, Volume 125, Number 2, December 2003

Geno Nikolov
The Christoffel function for the Hermite weight is bell-shaped

Yun-Zhang Li
On the holes of a class of bidimensional nonseparable wavelets

Leonel Robert and Luis Santiago
On a class of Sobolev scalar products in the polynomials

Peter Borwein and Tamas Erd\'{e}lyi
Lower bounds for the merit factors of trigonometric polynomials from
Littlewood classes

M. Vanlessen
Strong asymptotics of the recurrence coefficients of orthogonal polynomials
associated to the generalized Jacobi weight

Herbert Stahl
Quadratic Hermite-Pad\'{e} polynomials associated with the exponential

Ryszard Szwarc
Sharp estimates for Jacobi matrices and chain sequences, II

Josef Obermaier
A continuous function space with a Faber basis

Author index for Volume 125


End of NA Digest