NA Digest Sunday, September 22, 1991 Volume 91 : Issue 38

Today's Editor: Cleve Moler

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From: Jack Dongarra <>
Date: Sun, 15 Sep 91 10:57:18 -0400
Subject: Meeting in Honor of Golub's 15th Birthday

Meeting in honor of Golub's 15th birthday.

As you probably know, Gene Golub was born on February 29, and his next
"true" birthday will be a very special one. He'll be 60 in 1992!

As is often done for "personalities" like Gene, a conference held in
his honor is very appropriate. We are in the process of organizing such
a special conference in honor of his "15th" birthday.

We are planning a one day meeting (on Saturday February 29, 1992) at the
University of Minnesota. (This meeting will follow a meeting on
Iterative Methods for Sparse and Structured Problems held at the IMA.
For more information on the iterative methods meeting contact
Gene Golub, Anne Greenbaum, or Mitchell Luskin.)
The one day meeting will consist of very informal talks addressing
Gene's impact on various areas of research, his unique style of
interacting with people, his travel habits, anecdotes, a survey
of areas where he has had an impact, etc). These talks are primarily
meant to be non-technical.

If you would like to participate in the event contact Dan Boley
( for details.

With wishes,
Dan Boley
Jack Dongarra
Paul Van Dooren


Date: Mon, 16 Sep 91 14:52:25 GMT
Subject: Request for References on a MinMax Problem

I would appreciate a reference on the following
optimization problem (one variable) :
Let (a1,a2,..,an) and (b1,b2,...,bn) be two sets of n real numbers.
Find x which minimizes the function f(x) defined by :
F(x) = H(x) - B(x)
where : H(x) = Max( ai.x + bi ) , i running from 1 to n
B(x) = Min( aj.x + bj ) , j running from 1 to n

Thank you. Yours sincerely,

Edgar Soulie tel. 33-1-69 08 47 37 FAX : 33-1-69 08 79 63
affiliation : DSM-DRECAM-SCM et U.R.A. 331 du CNRS
Commissariat @ l'Energie Atomique
adresse postale : Service de Chimie Moleculaire B.P. 125
Centre d'Etudes Nucleaires de Saclay


From: Alan Edelman <>
Date: Mon, 16 Sep 91 09:21:19 PDT
Subject: First Annual Large Dense Linear System Survey

So who is solving large dense linear systems? The results of my first
survey have been submitted to the SIGNUM newsletter, and are available
by anonymous FTP from in pub/edelman.

Most dense large systems arise from boundary integral equations and
are most efficiently solved using iterative methods. It seems
Gaussian elimination on large matrices is mostly currently being
used to benchmark supercomputers. This mismatch leads to some
interesting questions, but I will avoid the temptation here to
discuss this further.

Thank you for your participation. Look forward for the second
annual survey next March on schedule.


From: Grace Wahba <>
Date: Mon, 16 Sep 91 19:49:25 -0500
Subject: Nonlinear Regression

In reply to Stephan Mueller's queary about non-linear least
squares, I would like to suggest that he look at Bates and
Watts recent book on Nonlinear Regression.


From: Murray Kirch <>
Date: Tue, 17 Sep 91 09:28:52 EDT
Subject: New Address for Murray Kirch

I have returned from my visiting position in Malaysia and am back
at Stockton State College with a new e-mail address.

Murray Kirch
Dept. of Information and Computer Science (INFO)
Stockton State College
Pomona, New Jersey 08240
Telephone: (609) 652-4353 (office)
(609) 927-0232 (home)


From: E.B. Saff <>
Date: Fri, 20 Sep 91 12:24:38 EDT
Subject: Recommendations for ODE Software

My introductory book with R.K. Nagle entitled "Fundamentals of Differential
Equations" currently contains a section on "Some Available Codes for Initial
Value Problems". This section includes some recommendations for mainframe
software such as DEABM, EPISODE, etc. We are seeking to update these
recommendations and particularly to include recommendations for PC software
for solving ODE's. We would appreciate any suggestions.

Ed Saff or dkgavaa@cfrvm.bitnet


From: Jorge More' <>
Date: Mon, 16 Sep 91 09:21:43 CDT
Subject: Wilkinson Fellowship in Scientific Computing


Mathematics and Computer Science Division

Argonne National Laboratory

Argonne National Laboratory invites outstanding candidates to apply for
the 1992 J. H. Wilkinson Fellowship in Scientific Computing.

This fellowship was created in memory of Dr. James Hardy Wilkinson, F.R.S.,
who had a close association with the Mathematics and Computer Science Division
as a consultant and guiding spirit for the EISPACK and LINPACK projects.
The Wilkinson Fellowship is supported by a special grant from the
Applied Mathematical Sciences program of the U.S. Department of Energy.

The Wilkinson Fellowship is intended to encourage young scientists
actively engaged in state-of-the-art research in scientific computing.
The candidate must be a U.S. citizen or permanent resident, and must
have earned (or be about to earn) a Ph.D. degree during the past three years.
The appointment will be in the Mathematics and Computer Science Division,
which has strong research programs in scientific computing,
software tools, computational mathematics, and applied analysis.
There is special interest in numerical methods for
linear algebra, optimization, and partial differential equations;
software tools for parallel computing;
and state-of-the-art numerical methods for computational science problems.

The appointment is for one year, and may be renewed for a second year.
The benefits of the appointment include a highly competitive salary,
moving expenses, a generous professional travel allowance, and
access to high-performance scientific workstations,
a scientific visualization laboratory, and state-of-the-art
parallel computers (including the Intel Touchstone DELTA System).

Applications from qualified candidates should be addressed to Nancy Griparis,
Employment and Placement, Box J-MCS92, 9700 South Cass Avenue,
Argonne National Laboratory, Argonne, IL 60439-4832.
Applications should include a resume',
a statement of research goals, and the names of three references.
The closing date for applications is December 6, 1991.
The applications will be reviewed by a selection committee and a
candidate announced in January 1992. The position will commence during 1992.
Further inquiries can be made by calling Jorge J. More' at
708-972-7162 or by sending electronic mail to

Argonne is an affirmative action/equal opportunity employer.


From: Gregory Nielson <>
Date: Mon, 16 Sep 91 11:07:29 -0700
Subject: Visualization '91

Visualization '91
Sponsored by IEEE Computer Society,
Technical Committee on Computer Graphics
October 21-25, 1991,
San Diego Marriott Mission Valley, San Diego, CA

Monday, October 21

Scientific Visualization Environments.
David M. Butler, Sandia, and Charles D. Hansen, LANL.

Volume Rendering of Microscopic Data.
Vincent Argiro, Vital Images.

Tuesday, October 22

Visual Representation of Complex, Multi-variate, Multi-Parameter Systems.
Jeff Beddow; Microsimulations Research Inc.

Quantum Visualization
Mick Savage, Molecular Simulations, Inc.


Introduction to Volume Visualization.
Arie E. Kaufman SUNY at Stony Brook NY, William E. Lorensen, GE, Schenectady
NY, Roni Yagel The Ohio State University, William L. van Zandt,Vital Images.

Introduction to Visual Programming Environments
Ephraim P. Glinert, RPI, NY

Visualizing Multi-Dimensional Geometry and Multi-Variate Problems
Alfred Inselberg, IBM and UCLA

Color Theory and Models
Haim Levkowitz, University of Lowell, MA

Image Processing Techniques in Visualization
Ardeshir Goshtasby, University of Illinois at Chicago.

Introduction to Issues in Computer Animation and Physically-based Modeling.
James Kwangjune Hahn, GWU.

Multimedia and Multimodal User Interface Design.
Meera Blattner, LLNL

Wednesday, October 23

Scientific Visualization from Inside the Metacomputer
Larry L. Smarr

Keynote Panel - Edwin H. Land Memorial Perception Panel
"From Perception to Visualization"
Vilayanur Ramachandran, Univ. of CA at San Diego, Richard Friedhoff, Visicom
Corp. and Univ. of CA at Riverside, Robert L. Savoy, Rowland Institute of
Science, Nahum Gershon, The MITRE Corporation

Flow Visualization
Case Studies
Applying 3D Visualization Techniques to Finite Element Analysis
Demos and Reception

Thursday, October 24

Visualization on Specialized Architectures
Isosurface Techniques
Case Studies
Techniques and Methodologies
Color versus Black-and-White in Visualization.
Multivariate Visualization
Biomedical Applications
Remote Visualization
Volume Visualization

Friday, October 26

Data Structures and File Handling
Case Studies
Multimedia Environments for Science
Visualization Paradigms and Structures
Volume Visualization Methods and Applications

Vision and Art
Michael F. Marmor, Department of Ophthalmology, Stanford

For registration information, contact:

Visualization '91
Carol Hunter Phone 415 423 9368
Lawrence Livermore National Lab FAX 415 423 8704
P.O. Box 808, MS L-301 Request for refunds must be
Livermore, CA 94551 received by 30 September 91


From: John Gilbert <>
Date: Tue, 17 Sep 91 15:54:20 WET DST
Subject: Summer School at Lancaster 1992

SERC Numerical Analysis Summer School
Lancaster University
19 - 31 July, 1992

The fifth SERC sponsored Numerical Analysis Summer School is to be held at
Lancaster next summer. The meeting will comprise two one-week modules each of
which can `stand alone' though it is hoped that many participants will stay for
longer periods. SERC will contribute towards the subsistence costs of a limited
number of participants each week. The meeting is open to all interested
researchers, but only those currently employed in the UK will be eligible for
SERC support.

In each week there will be three five-lecture courses given by the invited
instructors, additional activities organised by the local expert and a programme
of current research seminars given by participants. The outline programme for
the meeting is:

Large Scale Matrix Problems (20-24 July)

J. Dongarra (Tennessee) Block algorithms for dense matrix
P.J. Plemmons (Wake Forest) Parallel algorithms
H. Elman (Maryland) Iterative methods for linear systems
N. Higham (Manchester) Local expert

Numerical Solution of Partial Differential Equations (27-31 July)

R. Bank (San Diego) Preconditioners for Elliptic PDEs
J. Jerome (Northwestern) Semiconductor device modelling
M. Pandolfi (Politecnico di Torino) Hyperbolic systems
A. Wathen (Bristol) Local expert

The lectures will take place from Monday to Friday each week and there will be a
substantial amount of time available for research and discussion with the
assembled experts. The aim of the specialist courses is to enable people with
initially only a nodding acquaintance with a topic to concentrate on it and end
up feeling quite competent in it, thus broadening their research horizons. It
is hoped that a participant with a good initial knowledge may be enabled to work
on significant problems in the area.

Further details and application forms will be available in October from John
Gilbert, Department of Mathematics, Lancaster University, Fylde College,
Lancaster LA1 4YF, UK.



From: Steve Serbin <>
Date: Thu, 19 Sep 91 07:40:15 -0400
Subject: Robert Todd Gregory Memorial Lecture

The Departments of Computer Science and Mathematics of the University
of Tennessee, Knoxville and the University of Texas, Austin announce
the Fifth Robert Todd Gregory Memorial Lecture: High-Level Parallelism
in the Solution of Large Sparse Linear Systems, by David M. Young of
the Center for Numerical Analysis, University of Texas, Austin, to be held
on Friday, September 27, 1991 at 4pm. in the John C. Hodges Library
Auditorium at the University of Tennessee, Knoxville. Professor Young's
talk describes work on the development of rapidly convergent iterative
methods for solving large sparse linear systems arising in the solution
of elliptic partial differential equations. Methods are considered which
are suitable for use on parallel computers with a small number of
processors. Tools for obtaining rapid convergence include the use of macro
iterations based on parallel multilevel methods, rational iterations and
ADI methods. These procedures are designed to reduce the errors corresponding
to a part of the eigenvalue spectrum without increasing the errors
elsewhere in the spectrum. Partial fraction representations of the rational
functions arising in the macro iterations procedures are used to achieve
Prior to Professor Young's lecture, there will be a Numerical Linear Algebra
minisymposium, consisting of six twenty minute talks, to be held in Room
221 of the University Center from 1:15-3:15. Speakers are Jack Dongarra,
Mike Berry, Ben Fitzpatrick, and Gene Wachspress of UTK and Al Geist
and Ed D'Azevedo of ORNL.
For further information about the program, directions, or to announce
intention to attend, contact Steve Serbin, Math Dept., Univ. of Tennessee,
Knoxville (615)-974-4268,


End of NA Digest