**Today's Topics:**

- Meeting in Honor of Golub's 15th Birthday
- Request for References on a MinMax Problem
- First Annual Large Dense Linear System Survey
- Nonlinear Regression
- New Address for Murray Kirch
- Recommendations for ODE Software
- Wilkinson Fellowship in Scientific Computing
- Visualization '91
- Summer School at Lancaster 1992
- Robert Todd Gregory Memorial Lecture

-------------------------------------------------------

From: Jack Dongarra <dongarra@cs.utk.edu>

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

(na.boley@na-net.ornl.gov) for details.

With wishes,

Dan Boley

Jack Dongarra

Paul Van Dooren

------------------------------

From: Edgar Soulie <LJUB%FRSAC11.BITNET@CUNYVM.CUNY.EDU>

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

F-91191 GIF-SUR-YVETTE Cedex FRANCE

LJUB at FRSAC11.BITNET

------------------------------

From: Alan Edelman <edelman@math.berkeley.edu>

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 math.berkeley.edu 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 <wahba@stat.wisc.edu>

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 <mrk@vax002.stockton.edu>

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)

e-mail: mrk@vax002.stockton.edu

------------------------------

From: E.B. Saff <esaff@gauss.math.usf.edu>

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 esaff@math.usf.edu or dkgavaa@cfrvm.bitnet

------------------------------

From: Jorge More' <more@antares.mcs.anl.gov>

Date: Mon, 16 Sep 91 09:21:43 CDT

**Subject: Wilkinson Fellowship in Scientific Computing**

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 more@mcs.anl.gov.

Argonne is an affirmative action/equal opportunity employer.

------------------------------

From: Gregory Nielson <nielson@enuxva.eas.asu.edu>

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

Workshops

Scientific Visualization Environments.

David M. Butler, Sandia, and Charles D. Hansen, LANL.

Volume Rendering of Microscopic Data.

Vincent Argiro, Vital Images.

Tuesday, October 22

Workshops

Visual Representation of Complex, Multi-variate, Multi-Parameter Systems.

Jeff Beddow; Microsimulations Research Inc.

Quantum Visualization

Mick Savage, Molecular Simulations, Inc.

Tutorials

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

Demos

Visualization on Specialized Architectures

Isosurface Techniques

Case Studies

Applications

Techniques and Methodologies

Color versus Black-and-White in Visualization.

Multivariate Visualization

Biomedical Applications

Remote Visualization

Volume Visualization

Systems

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 <maa002@central1.lancaster.ac.uk>

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

computations

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.

Email: maa002@cent1.lancs.ac.uk

------------------------------

From: Steve Serbin <serbin@math.utk.edu>

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

parallelism.

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,serbin@sugarbowl.math.utk.edu

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End of NA Digest

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