NA Digest Monday, August 18, 1997 Volume 97 : Issue 33

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

Submissions for NA Digest:

Mail to

Information about NA-NET:

Mail to

URL for the World Wide Web: -------------------------------------------------------

From: Hans Stetter <>
Date: Thu, 14 Aug 97
Subject: Richard Weiss

Richard Weiss died on 31 July, shortly after his 51st birthday. Although he
had been suffering from various ailments for a number of years, which greatly
reduced his capacity for scientific work, much to his distress, his unexpected
death came as a shock for his friends and colleagues.

Richard's principal contributions to numerical analysis were in the area of
singularly perturbed differential equations. As early as 25 years ago, he
realized that analytical information was critical for the development of well-
behaved algorithms; with various co-workers he published some of the seminal
paers in this area. After ha had become a professor at the Technical University
of Vienna at the age of 34, he and his students (P.Markowich, Ch.Ringhofer,
Ch.Schmeiser, and others) extended these ideas to semiconductor modelling and
computation and to related problems. His ideas on dynamical systems were taken
up and further developed by P.Szmolyan and other students.

His friends around the globe will keep him in their memories as a hard-working,
lively, and good-natured person with whom they enjoyed to be associated.


From: Richard Skora <>
Date: Mon, 11 Aug 1997 15:15:43 -0400
Subject: Re: Academic Conferences On Web

Re: Academic Conferences On Web

In a recent NA Digest (Monday, August 11, 1997, Volume 97, Issue 32) Mr. Xin Yu
<> advertised a method to participate in "Conferences on the
Web." His instructions direct the reader to go to some kind of Web
yellow pages which has nothing to do with scientific research nor conferences
on the Web. In fact, the instructions lead one to Mr. Yu's personal page which
advertises what may be a pyramid scheme.

I hope in the future Mr. Yu is not allowed to post in NA Digest.

Richard K. Skora

[Editor's Note: Richard is absolutely right that such postings do not belong
in the NA Digest. I'm sorry that I wasn't more careful with this one.
-- Cleve ]


From: Leonid Zaslavsky <>
Date: Mon, 11 Aug 1997 15:30:15 -0700 (PDT)
Subject: Change of Address for Leonid Zaslavsky

Dear Colleagues:

In the middle of July, I completed my postdoc at NYU and
joined the Applications & Benchmarking Group at Tera Computer
Company in Seattle, WA.

Leonid Zaslavsky

Tera Computer Company Voice: 206/325-0800 ext. 507
2815 Eastlake Ave. East Fax: 206/325-2433
Seattle WA 98102-3027 E-mail:


From: Alexei Kuntsevich <>
Date: Mon, 11 Aug 1997 18:20:09 -0700
Subject: Solver for Local Nonlinear Optimization Problems

S o l v O p t
v. 1.1 (June, 1997)

is a collection of the M-files for use with Matlab, FORTRAN and C source codes.

SolvOpt (Solver for local optimization problems) is concerned with
minimization or maximization of nonlinear, possibly non-smooth objective
functions and solution of nonlinear minimization problems taking into account
constraints by the method of exact penalization.

SolvOpt is a freeware and comes with no warranty.

MS Windows 3.xx, '95, HP Unix.

Compilers (required products):
Matlab 4.2 (MS Windows, UNIX), Matlab 5.0 (UNIX),
MS Visual C++, HP-UNIX C,
MS FORTRAN Optimizing Compiler 1.0, HP-UNIX FORTRAN-90.

the complete manual on SolvOpt is available as an Adobe 3.0 PS-file,
the online reference manual on SolvOpt is a shortened version of the
complete one.

the results illustrating the performance of the program
are presented on the web (but not given in the manual).

All this stuff is available for downloading from the URL:

What is new in version 1.1?
- the program itself calculates suitable penalty coefficients,
- the step size strategy has been improved essentially,
- the termination criteria have become more strict,
- the code is better adapted to minimization of badly scaled,
almost "flat" and extremely "steep" functions,
- the routine does not stop at a point, where no function value
is available or it equals infinity, or gradient is zero,
unless it fails to find a way to pass a "bad" area,
- the manual is completed by including the chapters specific
for a programming language,
- warning messages come every time when the program detects
an irregular (complicated) case, so the user is aware of
possible failures.
- The FORTRAN and C versions are fully tested now.

- still no information about Lagrange multipliers is computed,
- FORTRAN-77 is no more supported,
- the authors plan no further improvement to the code by the end of
the academic year 1997-1998.

Alexei V. Kuntsevich
Institute for Mathematics, Karl-Franzens University of Graz
Heirichstr., 36, A-8010 Graz, Austria
fax: +43 316 3809815, tel: +43 316 3805173.


From: Allison Bogardo <>
Date: Tue, 12 Aug 97 08:44:32 EST
Subject: Nominations for the George Polya Prize


The Polya Prize

SIAM will present the George Polya Prize at the 1998 SIAM Annual
Meeting in Toronto, Canada, July 13-17. The award honors the
memory of George Polya and will be given for a notable contribution
in one of the following areas: approximation theory, complex
analysis, number theory, orthogonal polynomials, probability
theory, or mathematical discovery and learning.


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

Description of Award

The award consists of an engraved medal and a $20,000 cash prize.


A letter of nomination, including a description of achievement(s)
should be sent by October 1, 1997 to:

Professor Harry Kesten
Chair, Polya Prize Selection Committee
c/o Allison Bogardo
3600 University City Science Center
Philadelphia, PA 19104-2688
Telephone: (215) 382-9800
Fax: (215) 386-7999

Other members of the selection committee are Lennart Carleson
(Royal Institute of Technology, Stockholm), Barry Mazur (Harvard
University), Paul Nevai (The Ohio State University), and Andrew Yao
(Princeton University).


From: Ken Clarkson <>
Date: Thu, 14 Aug 1997 10:41:05 -0400
Subject: ACM Computational Geometry Symposium

The Fourteenth Annual ACM Symposium on Computational Geometry,
featuring an applied track, a theoretical track, and a video review,
will be held at the Radisson Metrodome Hotel in Minneapolis, Minnesota,
from June 7 through 10, 1998.

This conference have included papers on mesh generation, Delaunay
triangulation in all its forms, surface reconstruction, nested
dissection of irregular meshes, and techniques for coping with
degeneracy and approximate arithmetic in geometric computations.

Extended abstracts, for consideration by the program committees, are
due November 21, 1997.

More information is available
through the conference webpage,


From: Niloufer Mackey <>
Date: Sat, 16 Aug 1997 16:43:26 -0400 (EDT)
Subject: Kalamazoo Matrix Symposium

Fourth Kalamazoo Symposium

October 24 -- 25, 1997

Third Announcement
Call for Papers

Principal Speakers: G. W. Stewart, University of Maryland

N. J. Higham, University of Manchester
"How and How Not to Compute the Matrix Square Root"

Charles R. Johnson, College of William & Mary
"Determinantal Inequalities: Ancient History and
Recent Advances"

Charles Van Loan, Cornell University

Henry Wolkowicz, University of Waterloo
"Semidefinite Programming and Applications"

We invite the participation of both specialists and non-specialists
interested in matrix analysis and its applications to other fields.

Abstracts for 20-minute contributed talks should arrive by 29 August
1997. Email submission (TeX, LaTeX or PostScript) is welcome.
Graduate students are encouraged to submit abstracts for

Preceding the symposium, at 4pm on Thursday, 23 October 1997, will
be a University Visiting Scholar lecture by G. W. Stewart.
A banquet is planned for Friday evening.

More information is available on our Web page at

Organizing Committee: Nil Mackey, John Petro and Tom Richardson
Western Michigan University


From: Barb Taub <>
Date: Tue, 12 Aug 1997 23:44:42 -0500
Subject: Position at Wolfram Research

Wolfram Research is seeking an outstanding candidate to add to its
research and development team. Applicants should be dedicated and
motivated, have the ability to work collaboratively with other developers,
and either have or shortly expect to obtain a Ph.D. in numerical analysis
or a closely related area. We are seeking someone with a strong background
in numerical linear algebra, and experience with LAPACK and BLAS would be
advantageous, but other areas of numerical analysis involving large-scale
computation may also be acceptable. A strong programming background is
essential, and experience with C and/or Mathematica would be beneficial.

You can contact us:

by filling out a web employment application
by sending us email (plain text format only) to
by sending a fax to 217-398-0747
by sending regular mail to Human Resources Department, Wolfram
Research, 100 Trade Center Drive, Champaign, IL 61820-7237, USA

Please send a resume along with samples of programs and other work.


From: Karsten Decker <>
Date: Wed, 13 Aug 1997 11:36:09 +0200
Subject: Positions at the Swiss Center for Scientific Computing

The Swiss Center for Scientific Computing (CSCS/SCSC) in Manno, Ticino,
part of the Swiss Federal Institute of Technology (ETH) in Zurich,
invites applications for a


with background in CFD and especially in related Preprocessing.

The Applied Mechanical Engineering (AME) team at CSCS/SCSC will be
involved in a European Esprit project. Within this framework, AME will
develop tools for interfacing geometries, given by standard commercial
CAD formats (IGES, STEP), with grid generators and with
interdisciplinary applications such as aero-elasticity. Advanced
computational geometry and computer science technologies will be applied
to derive highly sophisticated techniques for CAD repair and new
methodologies for mesh generation.

Essential technical skills of successful applicants will comprise a
sound background in areas of mathematics and physics related to
engineering sciences, experience in FORTRAN, C, C++ programming, the
usage of graphical libraries such as OpenGL and/or OpenInventor and
eventually GUI development; basic background with respect to extension
languages would be an additional asset. Important for the present
position is also the experience with commercial CAD packages and mesh
generation tools, e.g. CATIA, CADAM, ICEM, etc. At the same time, the
applicant should have background knowledge on the development and
implementation of mesh generation algorithms based on Delaunay
triangulation and heuristics.

All applicants should have a relevant degree in mechanical engineering,
mathematics or computer science and wide experience in the
aforementioned scientific fields. The ability to conduct research and
development independently, excellent communication skills, and teamwork
experience as well as good written and oral presentation skills will be

An appointment will be initially for one year with possible annual
extensions. The position will not involve regular teaching duties.
CSCS/SCSC offers competitive salaries and excellent working conditions.
Senior research scientists are encouraged for application.

Please send cover letter and resume, including contact info for two or
three references, to:

Ms. Daniela Maestri
Personnel Office
Swiss Center for
Scientific Computing (CSCS/SCSC)
Galleria 2
Via Cantonale
CH-6928 Manno
Fax: +41 (91) 610 8282

For full consideration, applications should be received by August 25,

Applications through recruitment agencies or by electronic mail will not
be considered.

Further information about CSCS/SCSC can be found at
Technical information is available from Dr. Edgar A. Gerteisen
( directly.


From: Claus Bendtsen <>
Date: Thu, 14 Aug 1997 14:02:14 +0100
Subject: Research Postion at Danish Supercomputing Center

Ph.D. Project
Object-Oriented Software for Large-scale Environmental Models

A 3 year Ph.D. position is available from the Danish Research
Academy in cooperation with the National Environmental Research
Institute, the Danish Supercomputing Center (UNI-C) and the Department
of Mathematical Modelling at the Technical University of Denmark.

The solution of different environmental problems is becoming more
and more important for the society. However, if all physical processes
are carefully described in the model it is difficult to handle such
problems numerically and it becomes necessary to use flexible software
in order to benefit from the progress which is continuously made in
numerical methods for PDEs and ODEs. The purpose of the project is to
investigate the use of object-oriented software design for large-scale
environmental models. The initial task will be to form a library of
building blocks for the Danish Eulerian model using an object-oriented
language and subsequently to extend the functionality to supporting 3D
as well as refined grid simulations. The main issues to be addressed
are parallelism and choice of numerical methods.

The salary for the first two years will be dkr. 171.504 and for the
third year dkr. 189.369. On top of this it will be possible to earn
approximately dkr. 52.000 a year.

The application must be received by the Danish Research Academy no
later than October, 1st, 1997. An application form as well as a
supplementary description of the project can be obtained from

The Danish Research Academy
Observatorievej 3, DK-8000 AArhus C, Denmark
Phone #: +45 86 14 48 99, Email:

Further information can be obtained from any of the following

Zahari Zlatev
National Environmental Research Institute
Department for Atmospheric Environment
Frederiksborgvej 399, P. O. Box 358, DK-4000 Roskilde, Denmark
Phone #: +45 46 30 11 49, E-mail:

Per Grove Thomsen
Institute For Mathematical Modelling.
DTU, Bldg. 305, DK-2800 Lyngby, Denmark
Phone #: +45 45 25 30 73, E-mail:

Claus Bendtsen
Danish Computing Center for Research and Education
DTU, Bldg. 304, DK-2800 Lyngby, Denmark
Phone #: +45 35 87 89 69, E-mail:


From: Mike DeLong <>
Date: Thu, 14 Aug 1997 14:58:42 -0600 (MDT)
Subject: Graduate Research Assistant Positions at Los Alamos

Graduate Research Assistant Positions
Los Alamos National Laboratory

The Scientific Computing Group (CIC-19) at Los Alamos National Laboratory
is currently seeking highly motivated graduate students to participate in
the Graduate Research Assistant (GRA) program. Graduates with experience
in any or all of the following categories are encouraged to apply:

Parallel Computer Programming
Parallel Software Engineering and Library Development
Numerical Linear Algebra
Iterative Linear Equation Solvers
Multigrid Methods

Experience with Fortran 90, HPF and MPI on parallel machines such as the
Cray T3E, IBM SP-2, SGI/Cray Origin 2000 and workstation clusters is
desirable. Experience with iterative linear solver methods such as
conjugate gradient methods, incomplete Cholesky preconditioners and
multigrid methods is also desirable.

Eligibility for the GRA program is limited to applicants who have
completed a bachelors degree by date of hire, have been admitted to or
have active status in a graduate program at a college or university.
Students that have completed a Masters degree and have not yet been
accepted into another graduate program may be eligible for the Post
Masters program and are also encouraged to apply.

Appointments are for 90 days up to one year. Salary ranges from $29,000
to $41,000, depending on the number of years of graduate school

Applications must be received as soon as possible to be given fullest
consideration. Interested individuals are encouraged to send a copy of
their resume by electronic mail, fax, or U.S. mail to:

Mike DeLong
Los Alamos National Laboratory
Group CIC-19, MS B256
Los Alamos, NM 87545

FAX: (505) 667-1126

Los Alamos National Laboratory is an equal opportunity employer.


From: Bill Rider <>
Date: Thu, 14 Aug 1997 15:23:50 -0600
Subject: Postdoctoral Positions at Los Alamos

Post Doctoral Fellowship Positions
Los Alamos National Laboratory
Nonlinear Methods in Computational Physics

The Hydrodynamics Methods Group (X-HM) at Los Alamos National Laboratory is
currently seeking highly motivated Ph.D. graduates to participate in
the Post Doctoral Fellowship program. Graduates with experience in any
or all of the following categories are encouraged to apply:

Computational Fluid Dynamics
Computational Astrophysics
Computational Radiation Transport
Computational Plasma Physics
Iterative Linear Equation Solvers
Multigrid or Multilevel Methods
Solution Adaptive Mesh Refinement

Experience with implicit methods for the solution of nonlinear
systems of partial differential equations is desirable.
Experience with iterative linear solver methods such as preconditioned
Krylov methods or multigrid methods is also desirable.


Experience in the development and use of modern numerical methods
for the computation of shock-, magneto- or radiation hydrodynamics.
Experience with methods using Riemann solvers, interface or front
tracking or adaptive mesh refinement is also desirable.

A Ph.D. completed within the last three years or soon to be completed is
required. Appointments have a duration of two years, with the possibility
of extension for a third year.

To receive fullest consideration for all fellowship possibilities, we must
receive your application as soon as possible. Interested individuals are
encouraged to send a copy of their resume by e-mail, fax, or U.S. mail to:

William J. Rider
Los Alamos National Laboratory
Group X-HM, Mail Stop F663
Los Alamos, NM 87545

FAX: 505-667-3726

Los Alamos National Laboratory is an equal-opportunity employer.


From: Claude Pommerell <>
Date: Sat, 16 Aug 1997 12:30:32 +0200
Subject: Position at ABB Corporate Research in Switzerland

ABB is a world-wide leader in power generation and distribution, industrial
automation, and mass transportation. In our Swiss Research Center near Zurich,
approximately 200 scientists and engineers are working on the basics of new
products for ABB. We have research projects in the areas of combustion
engineering, aerodynamics, environmental technology, materials science,
measurement techniques, and computer science.

Within our Computer Engineering Department, we have an immediate opening for a
permanent position as a

Scientific Computing Expert

The candidate should have a broad background in practical scientific
computing. He or she should be able to analyse practices in computational
environments, identify problems and find and implement solutions. Challenges
will usually span several aspects of scientific computing and require broad
experience in computational modeling, simulation software, and high-performance
computing systems.

The current range of projects involves work in at least two of the following
- nonlinear optimisation
- implementation of parallel CFD for unstructured 3-D grids
- parallel computing and load sharing over local and wide-area networks

Communicative skills are essential, since the candidate will often have to
interface between scientists, engineers, and managers in very different fields,
advise them on improvements, and articulate ideas in their own terminology. An
ability to communicate in English, a workable understanding of German and a
willingness to improve these language skills are essential for an appropriate
integration in our corporate and social environment.

Interested applicants should submit a curriculum vitae, including a statement
on their proficiency in the above mentioned areas and aspects of scientific
computing and languages, by e-mail (ASCII text preferred) to
<>, or to
Beatrice Brander-Claessen
ABB Corporate Research
CH-5405 Baden-Daettwil
General information on our company can be found on the World-Wide Web at the
The deadline for applications to this position is October 1st, 1997.


From: Heribert Blum <>
Date: Mon, 18 Aug 97 11:45:33 +0200
Subject: Position at University of Dortmund

Am Fachbereich Mathematik der Universitaet Dortmund ist zum 1. Maerz 1999 eine

Universitaetsprofessur C 4
fuer Angewandte Mathematik
(Nachfolge Prof. Reimer)


Gedacht ist an den Forschungsschwerpunkt

Numerik partieller Differentialgleichungen.

Es wird die Beteiligung an der Ausbildung der Studenten der Mathematik, der
Wirtschaftsmathematik und anderer Fachrichtungen sowie die Mitwirkung an
Aufgaben der Selbstverwaltung erwartet.

Habilitation fuer das Fach Mathematik oder habilitationsadaequate
Leistungen werden vorausgesetzt. Im uebrigen richten sich die
Einstellungsvoraussetzungen nach Par. 49 UG des Landes NRW.
Die Universitaet Dortmund strebt eine Erhoehung des Anteils von Frauen in
Forschung und Lehre an und bittet deshalb Wissenschaftlerinnen
nachdruecklich um ihre Bewerbung. Die Bewerbung geeigneter
Schwerbehinderter ist erwuenscht.

Bewerbungen werden mit den ueblichen Unterlagen innerhalb von 8 Wochen nach
Veroeffentlichung (19.9.97) erbeten an den Prodekan des Fachbereichs Mathematik,
Universitaet Dortmund, 44221 Dortmund, Tel.: (0231) 755(1)-3050


From: Maya Neytcheva <>
Date: Wed, 13 Aug 1997 12:47:24 +0200 (MET DST)
Subject: Contents, Numerical Linear Algebra with Applications

Numerical Linear Algebra with Applications
Volume 4, Issue 1, 1997

Newton's Method for a Generalized Inverse Eigenvalue Problem
Hua Dai and Peter Lancaster (pp. 1-21)

Lanczos Type Methods for Continuation Problems
C.-S. Chien, Z.-L. Weng and C.-L. Shen (pp. 23-41)

Deflated and Augmented Krylov Subspace Techniques
Andrew Chapman and Yousef Saad (pp. 43-66)

Numerical Linear Algebra with Applications
Volume 4, Issue 2, 1997

Asymptotic Convergence of Conjugate Gradient Methods for the Partial
Symmetric Eigenproblem
L. Bergamaschi, G. Gambolati and G. Pini (pp. 69-84)

Downwind Gauss-Seidel Smoothing for Convection Dominated Problems
W. Hackbusch and Th. Probst (pp. 85-102)

Stabilizing the Hierarchical Basis by Approximate Wavelets, I: Theory
Panayot Vassilevski and Junping Wang (pp. 103-126)

Numerical Linear Algebra with Applications
Volume 4, Issue 3, 1997; Special issue on Plasticity

Inexact Newton Solvers in Plasticity: Theory and Experiments
Owe Axelsson, Radim Blaheta and Roman Kohut (pp. 131-152)

Parallel Adaptive Multigrid Methods in Plane Linear Elasticity Problems
Peter Bastian, Knut Eckstein and Stefan Lang (pp. 153-176)

Domain Decomposition for a Non-Smooth Convex Minimization Problem
its Application to Plasticity
Carsten Carstensen (pp. 177-190)

Numerical Approximation of Problems in Plasticity:
Error analysis and Solution Algorithms
W. Han, S. Jensen and B. Daya Reddy (pp. 191-204)

A Modern Approach to the Solution of Problems of Classic
Elastoplasticity on Parallel Computers
Arnd Meyer and Detlef Michael (pp. 205-221)

Application of a Parallel Algebraic Multigrid Method for the Solution
of Elasto-Plastic Shell Problems
S. Meynen, A. Boersma and P.Wriggers (pp. 223-238)

Iterative Strategies for Solving Systems of Linear Algebraic Equation
Arising in 3D BE-FE Analyses of Tunnel-Driving
H.-J. Payer and H.A. Mang (pp. 239-268)

Numerical Linear Algebra with Applications
Volume 4, Issue 4, 1997

Matrix-Free Iterative Solution Strategies for Large Dense Linear Systems
S.A. Goreinov, E.E. Tyrtyshnikov and A.Yu. Yeremin (pp. 273-294)

Accuracy of Gram-Schmidt Orthogonalization and Householder Transformation
for the Solution of Linear Least Squares Problems
W. Longley and Roger D. Longley (pp. 295-303)

Alternatives for Parallel Krylov Subspace Basis Computations
Roger B. Sidje (pp. 305-331)

Operator Trigonometry of Iterative Methods
Karl Gustafson (pp. 333-347)


From: Technical Group <>
Date: Thu, 14 Aug 1997 19:28:53 +0400 (MSD)
Subject: Contents, East-West Journal of Numerical Mathematics

Vol.5, No.1, 1-66 (March 1997)

Algebraic multilevel preconditioners for perturbed finite
element matrices
O.Axelsson and Yu.Hakopian

A cascadic multigrid algorithm in the finite element method
for the plane elasticity problem
L.V.Gilyova and V.V.Shaidurov

Error analysis of a finite element realization of a fictitious
domain/domain decomposition method for elliptic problems
V.Girault, R.Glowinski, and H.Lopez

Numerical method for a free surface flow on the basis of the
fictitious domain method
H.Kawarada and H.Suito

Vol.5, No.2, 67-144 (June 1997)

A domain decomposition method for biharmonic problems
B.Achchab, A.Agouzal, and Z.Mghazli

An iterative substructuring method for elliptic mortar finite
element problems with a new coarse space

Finite-dimensional approximation in a multivalued problem
with p-Laplacian

A comparative study of nonlinear Galerkin finite element methods
for one-dimensional dissipative evolution problems
G.Nabh and R.Rannacher


End of NA Digest