- Today's Editor:
- Cleve Moler
- The MathWorks, Inc.
- moler@mathworks.com

- Bauer Remembers Householder and the Gatlinburg Meetings
- Numerical Analysis in the CS Curriculum
- Applied Numerical Linear Algebra Book
- Email for Bell Labs' Scientific Computing
- Least Squares Fits of Spherical Harmonics
- Web Site for the Electromagnetics Communmity
- Sparse Matrix Ordering and Graph Partitioning Software
- Proceedings of a Conference on Spectral Methods
- Overset Grids Symposium
- Boundary Integral Methods Conference
- ICASE/LaRC Industry Roundtable
- Conference on Applications of Dynamical Systems
- Materials Studies Workshop
- Position at the RWTH Aachen
- Position at University of Kiel
- Graduate Student Positions at Los Alamos
- Contents, Reliable Computing
- Contents, Applications of Mathematics

**URL for the World Wide Web:**
http://www.netlib.org/na-net/na_home.html
-------------------------------------------------------

From: Cleve Moler <moler@mathworks.com>

Date: Thu, 11 Jul 1996 17:07:37 -0400 (EDT)

**Subject: Bauer Remembers Householder and the Gatlinburg Meetings**

[At the Householder Symposium in Switzerland a couple of weeks ago,

F. L. (Fritz) Bauer gave an after-banquet talk, remembering the

Symposium's namesake, and the early history of the meetings.

Here are his notes for the talk. -- Cleve]

Memories of Alston Householder (1904-1993)

F. L. Bauer

Householder Symposium XIII

June 17 - June 21, 1996

Pontresina, Switzerland

How the Gatlinburgs came about

The idea of a Symposium on Matrix Computations came up during the Ann

Arbor Summer Session in 1960, when a group of people including Alston

Householder, the Todds, Wallace Givens, George Forsythe, Dick Varga,

Jim Wilkinson and I happened to be assembled at the Old German's

Inn. In due course -- nine month later -- the first Gatlinburg

Symposium was held in 1961, April 24-29. I was visiting Oak Ridge

National Laboratory just at the time, and Alston asked me to help him

with the local organization. I had not been in Gatlinburg before;

on my first visit to Oak Ridge in 1957 I had only seen, from

Knoxville Airport, the Smokey Mountains in the usual haze. Coming into

the mountain, just at the time when blossoming started, made a deep

impression on me -- in Mainz, in the Rhine valley, I was used to this,

but the common picture a European has of America is so much

dominated by wide plains, prairies and buffalos, terribly hot in the

summer and freezingly cold in the winter, that Gatlinburg came as a

complete surprise. My fascination was also influenced by the event. A

group of Numerical Analysts -- or should I more properly say

Numerical Algebraists -- from places all over the world came together

in the Mountain View Hotel for a genuine Working Conference, very

favorably contrasting the mammoth congresses. This was Alston's big

idea, and he convinced SIAM, NSF, AEC, and the Oak Ridge National

Laboratory, which we usually called Mr. Carbide, that it was worth trying.

My first steps in the Golden West

Maybe I should report on how I came to know Alston. I met him for the

first time in October 1955, in a national meeting on computer use

organized by Professor Alwin Walther in Darmstadt, Germany. Alston

gave a lecture with the title "Numerical Mathematics from the

viewpoint of electronic digital computers". A reprint of this paper

which was published in an obscure German Journal ("Nachrichtentechnische

Fachberichte") can be found in the appendix. It gives a short, remarkably

clear listing of the essentials of Numerical Mathematics. This was

Alston's admirable style.

When in 1957 I had a chance to visit the important places in the U.S.A.

I quite naturally included Oak Ridge in my wish list, next to UCLA-INA

(where I met George Forsythe), RAND Corporation, Wayne State University

Detroit (where Wallace Givens just held a famous Conference on Matrix

Computations), Ann Arbor (where I met John Carr), Argonne National

Laboratory (where I met Moll Flanders), University of Illinois Digital

Computer Laboratory (where I met Abe Taub), National Bureau of Standards,

Office of Naval Research, UNIVAC (where I met Grace Hopper and John

Mauchly), IBM, Bell Labs (where I met Richard Hamming), MIT (where I met

Howard Aiken). It was a tremendous seven weeks, from August 16, to

October 5, 1957. I met many more people than I had planned, among others

Richard Courant, Eugene Isaacson, John McPherson, H. F. Buckner, Ky Fan,

Gertrude Blanch, Evelyn Frank. I learned to appreciate American

hospitality. My transportation over the Atlantic had been arranged for

by Military Air Transport System and since the Office of Naval

Research was sponsoring it, I was even carried with the Generals

Machine. Quite fittingly, when I arrived on my flight back in Francfort,

I was greeted by the news that the Russians had started the Sputnik.

I made a few more trips to the U.S.A. In April 1958 I was

contacting an ACM group on behalf of our proposals that led to ALGOL

58. In September 1959 I stayed for a while with Alston

Householder, in 1960 I met him and a few others at the Ann Arbor

Summer Session. In turn, Alston and his wife Belle visited us

in Mainz in August 1962 on their way to the Munich IFIP Congress.

The next Gatlinburgs.

After the first Gatlinburg Symposium, I took part in several others.

The second one was held October 21-26, 1963, short after I had

accepted a professorship at Munich and had returned to my home town.

While the second meeting dealt with approximations, the third and

all the others coming dealt again with matrix calculations.

Gatlinburg III took place April 13-17, 1964. A photograph

showing Jim Wilkinson, Wallace Givens, George Forsythe, Alston

Householder, Peter Henrici, and myself has been reprinted in the

"Users Guide to MATLAB 4.2"; a copy can be found in the

appendix. In May 1964, Alston visited us in Munich, where he received a

Honorary Doctorate. He came again in the summer 1965, when Richard

Varga, invited on a Guest Professorship, also stayed for a quarter. This

was the time when my scientific collaboration with Alston came to a

peak.

There was a longer wait for Gatlinburg IV. In mid-August

1966, I was with Alston at the International Congress of

Mathematicians in Moscow, where -- by the way -- we met Sobolew

and Kantorovic. We went together with Jim Wilkinson to the home of

Tychonoff who treated us with Mulberry liquor in an unforgettable way.

Immediately following there was a matrix computations symposium

organized by Rigal in Besancon, a kind of alternative Gatlinburg

III. In the first quarter of 1967, I was a guest professor at

Stanford University and visited together with my wife Irene Alston and

Belle on my way home.

Gatlinburg IV then took place April 13-19, 1969. Mr. Carbide

supported us again in a grand way. The Cocktail parties were held at the

swimming pool which so that the liquor could easily be dumped into the

basin if the police raided the hotel (Tennessee was a dry state!). Then

Alston retired from the Oak Ridge National Laboratory, and although he

stayed on in the area, accepting a professorship at the University of

Tennesee, a new location for a Gatlinburg V had to be found. Richard

Varga succeeded in doing so. The meeting took place June 4-10, 1972

at Los Alamos with the local support of Nick Metropolis. It was again a

great success.

Gatlinburg goes Overseas.

Once the meetings had moved away from Gatlinburg, it was time to think

also of having a Gatlinburg somewhere in Europe. France, which was very

attractive, was not a candidate because of the recent Besancon

meeting, and England did not work out. But in Munich in 1973 the

President of the Bavarian Academy of Sciences was very open-minded

and had good contacts to the Stifterverband fur die Deutsche

Wissenschaft, a sort of German NSF. Thus, I was able to arrange for a

Gatlinburg VI at the Kurhotel Enzensberg in Hopfen am See, a small

resort place at the foothills of the Bavarian Alps, quite similar to

Gatlinburg in Tennessee, but now with snow instead of Dogwoods

and Mountain Laurels. The meeting was held December 15-22,

1974. I was remarried then, and my wife Hildegard, a mathematician,

took part. It was a very happy time for me, and I was in such a good mood

that I even played tricks on Olga Taussky-Todd, explaining to her that

the "Kurzentrum" meant a short piece (a "Trum" in Bavarian dialect) of wood.

In 1977, Gene Golub took the meeting back to the U.S.A. Gatlinburg VII

was held December 12-16, 1977 in Asilomar. It was a wonderful

place and thanks to Gene gave a lasting impression. In 1981 Jim

Wilkinson and Leslie Fox moved the meeting to Oxford, England. This was

for a while the last Gatlinburg meeting I visited. Around the middle of

the seventies I had reoriented the center of my activity towards

programming languages and programming methodology, as a

consequence of my building up a Computer Science department in Munich.

Gatlinburg IX took place in 1984 at Waterloo, Canada, organized by

J. A. George; Gatlinburg X in 1987 at Fairfield Glades, U.S.A., organized

by Pete Stewart (Alston attended it); Gatlinburg XI in

1990 at Tylosand, Sweden, organized by Ake Bjork.

All this time, Alston was no longer active, but he was the

soul of the Gatlinburgs, which had come to be established in a regular

3-year cycle. Whenever I came to the West Coast, and this was quite

regularly the case in the eighties due to a cooperation I had with IBM at

Santa Teresa Lab, I visited Alston Householder at Malibu, where he

lived, near to his son John and his daughter Jackie, after his wife Belle

deceased in 1975. His home became almost a second home place to me.

His son John wrote me once, that his family considered me to be Alston's

best friend. I was very pleased and very proud of this.

Alston gets remarried.

Alston came to visit my wife Hildegard and me from time to time in our

country house near Munich and in our apartment in town. At one of these

occasions Alston met Heidi Vogg, Hildegard's sister. Shortly after, Heidi

was run over by a car and severely injured; her recovery took more than

a year. During this time, a romance started between Alston and Heidi,

and they were married in spring 1984. Heidi was a great help to Alston,

whose health was getting weaker, and Alston was a man who could give

Heidi stability and warmth.

Alston dies.

In June 1993, Alston and Heidi came to the Gatlinburg XII meeting at

Lake Arrowhead, which was organized by Gene Golub and T.F.~Chan. They

enjoyed it tremendously. Three weeks later, on July 4, 1993, we received

the terrible message that Alston had died of a heart attack. Although it

was not completely unexpected, there was no special indication of an

acute danger. Alston was 90 years old. He had had a full life, with

many friends and people who admired him. He was an American in

the best sense of the word, liberal and socially conscious. Yet

he was a cosmopolitan with a thorough knowledge of foreign

languages and cultures. He was a mathematician of distinction. Above

all he was a friendly human being. We miss him very much.

The Gatlinburgs go on

The Gatlinburg Symposia on Matrix Calculations have a prehistory that

should not be forgotten. The "Conference on Matrix Computations"

Wallace Givens organized in 1957, has sometimes been called

Gatlinburg 0. But already in 1951 Olga Taussky-Todd

(1906-1995) had organized on the UCLA campus a symposium on

"Simultaneous Linear Equations and the Determination of

Eigenvalues". In these days there were exactly two electronic

computers of the modern generation in operation in the U.S.A., but quite a

number were soon to follow. Matrix calculations have been a testbed

for the development of the computer.

A unique feature of the Gatlinburgs is that there is no formal

organization responsible for them; there is, as Alston once put it, not

even a copyright on the name. In 1974, Alston, in SIAM review, discussed

and defended the character of the Gatlinburgs as "closed"

~meetings, limited in attendance -- similar to the Oberwolfach

meetings in mathematics. Alston wrote "Admittedly, no committee,

however constituted, can hope that its selections will be the best

possible". But with a truly international organizing committee, it is

possible to come close to this aim. The Gatlinburgs have shown this so

far, and as long as they continue to bring the elite of Numerical Algebra

together, they will continue. Meanwhile, I may express the thanks of the

people assembled here to the International Committee, chaired by

Dianne O'Leary and to the local organizers of Gatlinburg XIII, Walter

Gander and Martin Gutknecht, for their excellent job.

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

From: Annie Cuyt <cuyt@uia.ua.ac.be>

Date: Wed, 17 Jul 1996 12:30:35 +0200

**Subject: Numerical Analysis in the CS Curriculum**

There has been a lot of discussion in the past few years on the teaching

of Numerical Techniques in the CS curriculum. We refer for instance to the

notes of M. Overton, the afternotes of G. Stewart and several

NA-digest messages (among which volume 95 issue 46). Personally we

have the experience that aspects and notions like `rounding error',

`truncation error', `numerical instability' and `ill-conditioning' still

do astonish a lot of students when they first encounter them, and not in

the least CS students. Therefore we have developed a course on Computer

Arithmetic and Numerical Techniques, aiming especially at CS students and

training them in the proper {\bf use} of numerical routines and the correct

{\bf interpretation} of the numerical output, rather than in the

development of new numerical techniques (as is required from math students).

It is also being taught with success in a one-year postgraduate program on

computer science that is attended by students with mixed backgrounds

(economists, electronic engineers, ...).

The course starts with an extensive introduction on computer arithmetic,

covering the full IEEE standard on floating-point arithmetic as well as

lots of material from D. Knuth's volume 2 discussing alternatives.

The rest of the course is based on the paradigm described by T. Marchioro,

in which the journey from physical problem to computational

solution is stressed. Each topic or chapter in the course is structured around

5 basic components:

a motivating problem

the mathematical model describing the problem to be solved

a numerical technique developed for its solution

the actual implementation or use of a numerical routine, be it in C,

Fortran, Mathematica, Matlab or the like

the evaluation or quality control of the numerical output.

Let us for instance take the chapter on `approximation theory'. A motivating

start is the problem of implementing an elementary function on a

chip. Depending on the given function, apparently several

mathematical techniques are available: Taylor series expansion and the use

of Chebyshev polynomials, Pad\'e approximation and continued fraction

representation, Fourier series etc. After a brief theoretical discussion

several routines implementing the different techniques are looked up.

In this respect the Guide to Available Mathematical Software

(gams.nist.gov) is very helpful. Fully developed scientific environments

like Matlab and Mathematica also offer a lot of ready-to-use software.

The choice of quality software among the many routines found on the net

is not an easy one for the students. Notions like stability of the

algorithm and well-conditioning of the problem play a role here.

Finally the correct use of the software, be it in exact rational

arithmetic or in traditional floating-point arithmetic, and the evaluation

of the quality of the returned numerical output top the chapter off.

We plan to write down final course notes during the next academic year.

The course will essentially consist of two main parts. One part on

computer arithmetic which is important because it is underlying all numeric

computations. A second part consisting for the moment of the following

chapters: linear systems, nonlinear equation solving, polynomial and spline

interpolation, least squares data smoothing, approximation of functions,

Fourier series, Monte Carlo methods. The notes will be accompanied by a

programming environment in which students can experiment with their numerical

implementations in different floating-point sets (base 2, different precisions,

different exponent ranges).

Annie CUYT

Dept Mathematics & Computer Science Tel (32)3/820.24.07

University of Antwerp (UIA) Fax (32)3/820.24.21

Universiteitsplein 1 Secr (32)3/820.24.01

B-2610 Wilrijk-Antwerp (Belgium) Email cuyt@wins.uia.ac.be

Brigitte Verdonk

Dept. of Math. and Comp. Sc. Tel. +32 3 820.24.03

University of Antwerp (UIA) Fax. +32 3 820.24.21

Universiteitsplein 1 Telex 33646 UIA B

B2610 Wilrijk-Antwerp (Belgium) Email: verdonk@wins.uia.ac.be

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

From: Bill Hager <hager@math.ufl.edu>

Date: Sun, 14 Jul 1996 13:41:18 -0400

**Subject: Applied Numerical Linear Algebra Book**

NA Instructors:

Please remember that Applied Numerical Linear Algebra is no longer

available from the original publisher Prentice-Hall, while used book

dealers are charging quite a bit for the book. The author can provide

new copies of the book at a very reasonable price. For orders or for

examination copies:

By email: hager@math.ufl.edu

By fax: 352-392-6254

By telephone: 352-392-0281 x 244

By ordinary mail: William W. Hager, Department of Mathematics,

University of Florida, Gainesville, FL 32611 USA

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

From: Eric Grosse <ehg@research.bell-labs.com>

Date: Tue, 16 Jul 1996 18:58:15 +0400

**Subject: Email for Bell Labs' Scientific Computing**

In the recent split of AT&T, the scientific computing group stayed

with Bell Labs, now part of Lucent Technologies. Our offices and phone

numbers are unchanged, but email moved from research.att.com to:

wmc@research.bell-labs.com Bill Coughran

cowsar@research.bell-labs.com Lawrence Cowsar

freund@research.bell-labs.com Roland Freund

dmg@research.bell-labs.com David Gay

ehg@research.bell-labs.com Eric Grosse

lck@research.bell-labs.com Linda Kaufman

mhw@research.bell-labs.com Margaret Wright

netlib@research.bell-labs.com netlib

with web pages now at http://cm.bell-labs.com/who/

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

From: Chris Luchini <luchini@elroy.jpl.nasa.gov>

Date: Thu, 18 Jul 1996 14:16:56 -0700

**Subject: Least Squares Fits of Spherical Harmonics**

I need to find a highly efficient method to fit N'th order spherical

harmonics to the sum of an initial spherical harmonic series, and a set of

3-vectors, probably about 500 or so.

Anyone have a source for libraries that might contain code that would be

useful for this problem?

Chris

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

From: Dan Katz and Tom Cwik <emstaff@emlib.jpl.nasa.gov>

Date: Mon, 15 Jul 96 10:16:13 PDT

**Subject: Web Site for the Electromagnetics Communmity**

Members of the electromagnetics community,

We are pleased to announce a new web site for the electromagnetics

community. This site is a update of the original FTP library EMLIB,

and is now located at

http://emlib.jpl.nasa.gov/

This site has been created for the free distribution of electromagnetics

software and related information. This related information includes

relevant conference information, a list of other EM sites, and a

user-defined searchable directory of people working in the EM field.

Feel free to explore the information, and be sure to add yourself to

the database if you wish. The database currently has very few entries,

as this is the first public announcement of this web site.

Regards,

Dan Katz and Tom Cwik (emstaff@emlib.jpl.nasa.gov)

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

From: Anshul Gupta <anshul@watson.ibm.com>

Date: Mon, 15 Jul 1996 18:45:34 -0400

**Subject: Sparse Matrix Ordering and Graph Partitioning Software**

We are glad to announce the availability of "WGPP: Watson Graph Partitioning

(and sparse matrix ordering) Package." WGPP is a suite of routines for fast

generation of graph partitions with low edge-cuts and for generating robust

fill-reducing orderings of sparse matrices arising in a various applications

ranging from finite-element analysis to linear programming. The manual, the

software, and the related papers are available via anonymous FTP from the site

ftp://ftp.cs.umn.edu/users/kumar/anshul.

Graph partitioning is an important problem with extensive application

in scientific computing, optimization, VLSI design, and task partitioning

for parallel processing. The graph partitioning problem, in its most

general form, requires dividing the set of nodes of a weighted graph into

disjoint subsets or partitions such that the sum of weights of nodes in

each subset is nearly the same (within a user supplied tolerance) and the

total weight of all the edges connecting nodes in different partitions

is minimized. WGPP contains heuristics that significantly improve

partitioning speed and, for small number of parts, also in partitioning

quality over state-of-the-art graph partitioning packages.

An important application of graph partitioning is in computing fill-reducing

orderings of sparse matrices for solving large sparse systems of linear

equations. WGPP ordering routines generate sparse matrix orderings that

produce much less fill (on an average) upon factorization than the

conventional minimum-degree based ordering algorithms. Although slower

that minimum degree for finite-element matrices, WGPP is significantly

faster and more consistent than minimum-degree based orderings for sparse

matrices arising in linear programming problems solved using interior-

point methods. The web site http://www.research.ibm.com/osl/wgppnews.html

briefly describes the use of WGPP in conjunction with IBM Optimization

Subroutine Library (OSL) and its run time advantage. WGPP can be seamlessly

linked with OSL, but with the aid of the user interface described in the

manual, it can be used with any interior-point code.

Anshul Gupta

Rm. 31-216, IBM Watson Research Center, PO Box 218, Yorktown Heights, NY 10598

Tel: 914-945-1450; Fax: 914-945-3434;

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

From: Andrew Ilin <ilin@hpc.uh.edu>

Date: Thu, 11 Jul 1996 14:30:01 -0500 (CDT)

**Subject: Proceedings of a Conference on Spectral Methods**

The Proceedings of the Third International Conference on Spectral

And High Order Methods (Houston, Texas, 1995) are available for order.

The 620 page proceedings includes 55 articles on the following subjects:

spectral methods, high order finite differences and finite elements,

h-p version of finite elements, spectral elements, multigrid methods

and parallel computations.

All of the papers were subject to a rigorous refereeing process, which

was a principal responsibility of the Scientific Committee: I.Babuska,

C.Bernardi, C.Canuto, M.Deville, R.Glowinski, D.Gottlieb, H.O.Kreiss,

Y.Maday, J.T.Oden, A.T.Patera, A.Quarteroni, L.R.Scott.

Information about the meeting is available at

http://www.hpc.uh.edu/icosahom

or from

Susan Owens, ICOSAHOM '95 Coordinator

Department of Mathematics, University of Houston,

Houston, Texas 77204-3476.

FAX: 713-743-3505, Phone: 713-743-8688,

E-mail: susan@hpc.uh.edu

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

From: David Brown <dlb@c3serve.c3.lanl.gov>

Date: Thu, 11 Jul 1996 15:27:04 -0600 (MDT)

**Subject: Overset Grids Symposium**

ANNOUNCEMENT:

3rd Symposium on

OVERSET COMPOSITE GRID AND SOLUTION TECHNOLOGY

Center for Nonlinear Studies

Los Alamos National Laboratory

Los Alamos, New Mexico

November 18-21, 1996

Symposium Web Page: http://www.c3.lanl.gov/OGS

The method of Overset grids (or overlapping grids) was developed in

the early 1980s for the simulation of continuum mechanics problems

involving complex geometry using finite difference or finite volume

methods applied to classical partial differential equations. The

method has been used successfully for problems such as the simulation

of fluid flow around the U.S. space shuttle, in the simulation of flow

around ships, and for internal combustion applications.

For more information about this symposium, please see the Web site

listed above, or contact us by email at ogSymposium@lanl.gov.

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

From: Siamak Amini <Siamak.Amini@math.tamu.edu>

Date: Thu, 11 Jul 1996 17:05:34 -0500 (CDT)

**Subject: Boundary Integral Methods Conference**

An IMA Conference on

BOUNDARY INTEGRAL METHODS- THEORY AND APPLICATIONS

Place: The University of SALFORD, Manchester, UK.

Time: 15th-18th September 1997.

ANNOUNCEMENT and CALL for PAPERS

The meeting will provide a forum for the exchange of ideas between academic

and industrial researchers in different disciplines whose common interest

is boundary integral equations.

As well as discussing recent developments in the theory and numerical

analysis of boundary integral methods the conference will highlight many

new applications, for example in direct and inverse scattering, moving

boundaries, time dependent and nonlinear problems. Fast solution methods

such as preconditioned iterative schemes, use of multipole and wavelet

expansions and panel clustering techniques will also be discussed.

CONFIRMED INVITED SPEAKERS: J R Blake (Birmingham, UK),

D B Ingham (Leeds, UK), W Hackbusch (Kiel, Germany), G C Hsiao (Newark, USA),

R Kress (Gottingen, Germany), C Schawb (Zurich, Switzerland).

Organising Committee: Chair- Sia Amini (Salford), Simon Chandler-Wilde

(Brunel), Ke Chen (Liverpool), Ivan Graham (Bath), Paul Martin

(Manchester).

Interested researchers are invited to contact:

Mrs Pamela Bye

Conference Officer

IMA

Catherine Richards House

16 Nelson Street

Southend-on-Sea

Essex SS1 1EF

UK

email: imarch@v-e.anglia.ac.uk

or email Sia Amini at : s.amini@mcs.salford.ac.uk

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

From: David Keyes <keyes@cs.odu.edu>

Date: Fri, 12 Jul 1996 08:39:48 -0400

**Subject: ICASE/LaRC Industry Roundtable**

ICASE/LaRC 2nd INDUSTRY ROUNDTABLE

Williamsburg Hospitality House, Williamsburg, Virginia

October 7-9, 1996

We are pleased to announce that the Institute for Computer Applications

in Science and Engineering (ICASE) and NASA Langley Research Center

(LaRC) will conduct a second Industry Roundtable at the Williamsburg

Hospitality House, Williamsburg, Virginia, October 7-9, 1996.

The objectives of the Roundtable are: to expose government and academic

research scientists to industrial research agendas, and to acquaint

industry with the capabilities and technology available at ICASE/LaRC

and academic partners of ICASE. Industry participants will be invited

to discuss their future research needs in semi-formal presentations and

informal around-the-table discussions. These will be collected into a

report by the session chairs, who may recommend workshops and specific

projects for ICASE/LaRC-industry collaboration.

Nineteen sessions in three parallel tracks are scheduled. Each session

will consist of four presentations of 30 minutes each and an open forum

of approximately one hour. The technical sessions and session chairs

are:

APPLIED and NUMERICAL MATHEMATICS

Computational Materials Science - N. Chandra, Florida State University

Computational Structures - Jerry Housner, NASA Langley Research Center

Technology Transfer Issues - Dimitri Mavriplis, ICASE

Computational Electromagnetics - R. Nicolaides, Carnegie Mellon University

Materials Modeling - Ivatury Raju, NASA Langley Research Center

Structural Acoustics - Richard Silcox, NASA Langley Research Center

COMPUTER SCIENCE

Visualization - Thomas Crockett, ICASE

Workstation Cluster Computing - David Keyes, ICASE & Old Dominion University

Parallel Solvers in Industrial Applications- Alex Pothen, ICASE & Old Dominion

University

Hardware/Software Interaction - Arun Somani, University of Washington, Seattle

Software Reliability and Testability - Kishor Trivedi, Duke University

FLUID MECHANICS

Automotive Research Issues - Roger Arndt, National Science Foundation

Aerothermodynamics - Gregory Buck, NASA Langley Research Center

Laminar Flow Control - Ronald Joslin, NASA Langley Research Center

Acoustics - Michele Macaraeg, NASA Langley Research Center

General Aviation - Mujeeb Malik, High Technology Corporation

Aircraft Integration - Len Sakell, Air Force Office of Scientific Research

Turbulence and Combustion: Industrial Applications and Technology Transfer -

Munir Sindir, Rocketdyne

Active Flow Control - Richard Wlezien, NASA Langley Research Center

There will also be KEYNOTE TALKS on issues affecting science and engineering

research:

"Aeronautics Research and Technology at the Crossroads" - Robert E. Whitehead,

Associate Administrator for Aeronautics, NASA Headquarters

"Change: Managing Your Way Through It!" - William Ballhaus, Vice President,

Science and Engineering, Lockheed Martin Corporation

and a BANQUET TALK:

"The Frontiers of the Responsibly Imaginable in Aeronautics"- Dennis Bushnell,

Senior Scientist, NASA LaRC

Attendance will be limited by space considerations. There is no

registration fee. A pre-registration social will be held from 7:00 -

9:00 p.m. on Sunday, October 6, 1996 at the hotel. The banquet dinner

will be held on Monday, Octover 7.

Further information, electronic registration, and the proceedings of the

first ICASE/LaRC Industry Roundtable are available under

http://www.icase.edu/workshops/IR2/

The detailed agenda and hotel registration forms will be sent out in

early August. For questions, please contact: Emily Todd, Conference

Manager, ICASE, Mail Stop 132C, NASA Langley Research Center, Hampton,

VA 23681-0001. Telephone: (804) 864-2175; FAX: (804) 864-6134;

e-mail: emily@icase.edu.

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

From: Trini Flores <flores@siam.org>

Date: Tue, 16 Jul 96 09:18:59 EST

**Subject: Conference on Applications of Dynamical Systems **

4th SIAM Conference on Applications of Dynamical Systems

May 19-22, 1997

Snowbird Ski and Summer Resort

Snowbird, Utah

The Call for Papers for the conference is now available

on the World Wide Web at

http://www.siam.org/meetings/ds97/ds97home.htm

Co-organizers: Mary Silber, Northwestern University

Steven H. Strogatz, Cornell University

For additional information, contact SIAM at

E-mail: meetings@siam.org

Tel. 215-382-9800

Fax: 215-386-7999

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

From: Chuck Gartland <gartland@mcs.kent.edu>

Date: Tue, 16 Jul 1996 23:34:53 -0400 (EDT)

**Subject: Materials Studies Workshop**

Applied Mathematics Workshop

for Materials Studies and Industrial Applications

October 24-26, 1996

Penn State Scanticon Conference Center Hotel

Penn State University

University Park, Pennsylvania USA

An interdisciplinary conference designed to bring together research

and applications focusing on

- liquid crystals

- ferroelectric ceramics

- piezocomposites

The conference will deal with experimental, modeling, computational,

analytic, and industrial problems and with mathematical methods

arising in the study of such solid and liquid materials.

Partial List of Speakers

Marco Avellaneda Jack Kelly Bruce Pitman

Gerhard Barsch Armen Khachaturyan Karin Rabe

John Board David Kinderlehrer E. Salje

Pat Cladis Robert Kohn A. Saxena

Pierre Deymier H. Krakauer Mike Shelley

Weinan E Oleg Lavrentovich G. Stanley

Takeshi Egami Frank Leslie Luc Tartar

Greg Forest Fang-Hua Lin Salvatore Torquato

Chuck Gartland Mitchell Luskin Lev Truskinovsky

Sharon Glotzer Robert Meyer Epifanio Virga

Ken Golden David Muraki Qi Wang

Dorian Hatch Peter Palffy-Muhoray Claudio Zannoni

Diane Henderson George Papanicolaou

Richard James Jay Patel

Organizing Committee

Leonid Berlyand Greg Forest Eugene Wayne

M. Carme Calderer Chuck Gartland

Wenwu Cao Peter Palffy-Muhoray

Important Dates

August 20, 1996: Workshop pre-registration deadline for special fee

October 20, 1996: Deadline for cancellation refunds

More information

WWW: http://www.math.psu.edu/mcc/imm.html

e-mail: imm-workshop@math.psu.edu

ConferenceInfo1@cde.psu.edu

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

From: Karsten Urban <urban@igpm>

Date: Fri, 12 Jul 1996 08:27:41 +0100

**Subject: Position at the RWTH Aachen**

Position at the RWTH Aachen available

There is a position as 'Wissenschaftlicher Mitarbeiter' (BAT IIa/2)

available at the Institut fuer Geometrie und Praktische Mathematik

of the RWTH Aachen within the project 'Reduzierte Modellierung und

Simulation von Vielstoffprozessen mit Multiskalen-Verfahren' supported

by the Volkswagen-Stiftung. The possibility for preparing a Ph.D. thesis

is given.

The project is supervised by Professors Marquardt (Lehrstuhl fuer

Prozesstechnik, RWTH Aachen) and Dahmen (Institut fuer Geometrie und

Praktische Mathematik, RWTH Aachen). The reduction of the model plays a

crucial role for the efficient numerical simulation of complex mixtures

arising in many economically significant processes in chemical engineering

and petrochemistry.

The part of the project at the Institut fuer Geometrie und Praktische

Mathematik is concerned with the study of multiscale and wavelet

techniques for the reduction of the system as well as for the numerical

solution of the nonlinear differential-algebraic reaction equations.

Further information on the project (in german) can be found under

http://www.igpm.rwth-aachen.de/~urban/vw/vw.html.

Requirements include a diploma (masters) in mathematics and good

knowledge of numerical analysis. Experience in programming (C++), basic

knowledge in natural science and/or of wavelets are appreciated.

The RWTH Aachen is interested in having a high quota of woman in

research and teaching. Qualified female scientists are particularly

encouraged to apply. Applications of handicapped candidate with equal

qualification will be given preference.

Applications should contain curriculum vitae, a copy of the master's

thesis and copies of the relevant certificates should be sent to

Dr. Karsten Urban

Institut fuer Geometrie und Praktische Mathematik

RWTH Aachen

Templergraben 55

D-52056 Aachen, Germany

Phone : +49 / 241 / 80 63 38

Fax : +49 / 241 / 8888 317

e-Mail: urban@igpm.rwth-aachen.de

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

From: Jens Burmeister <jb@numerik.uni-kiel.de>

Date: Tue, 16 Jul 1996 12:42:01 +0200 (MET DST)

**Subject: Position at University of Kiel**

Technische Fakult"at

der Christian-Albrechts-Universit"at zu Kiel

An der Technischen Fakult"at der Christian-Albrechts-Universit"at zu

Kiel, in Kooperation mit dem Mathematischen Seminar, ist ab sofort

eine

C3-Professur f"ur Diskrete Optimierung

neu zu besetzen. Die Bewerberinnen und Bewerber sollten durch ihre

Forschungsleistungen in einem oder mehreren der folgenden Gebiete

ausgewiesen sein: Kombinatorische Optimierung, Graphentheorie,

Algorithmen und effiziente Datenstrukturen oder Codierungstheorie. Ein

spezifischer Anwendungsbezug wird erwartet. Neben der Vertretung der

Diskreten Optimierung in Forschung und Lehre wird eine angemessene

Lehrbeteiligung an der Grundausbildung f"ur Studierende der Mathematik

und anderer F"acher (insbesondere Informatik) und ein Engagement beim

Aufbau der Fachrichtung Technomathematik erwartet.

Die Bewerberinnen und Bewerber m"ussen habilitiert sein oder eine

vergleichbare Leistung aufweisen. Die Universit"at ist bestrebt, den

Anteil von Wissenschaftlerinnen zu erh"ohen. Sie fordert deshalb

geeignete Frauen auf, sich zu bewerben. Schwerbehinderte Bewerberinnen

und Bewerber werden bei entsprechender Eignung bevorzugt

ber"ucksichtigt. Frauen werden bei gleichwertiger Eignung, Bef"ahigung

und fachlicher Leistung vorrangig ber"ucksichtigt.

Bewerbungen mit den "ublichen Unterlagen (darunter eine kurzgefa"ste

Forschungsperspektive) sind bis zum 31. August 1996 zu richten an

den

Dekan der Technischen Fakult"at

der Christian-Albrechts-Universit"at zu Kiel

Kaiserstra"se 2

24143 Kiel

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

From: Wayne Joubert <wdj@c3serve.c3.lanl.gov>

Date: Tue, 16 Jul 1996 14:28:22 -0600 (MDT)

**Subject: Graduate Student Positions at Los Alamos**

Graduate Student Research Assistants

Los Alamos National Laboratory

(PARALLEL COMPUTATION AND NUMERICAL LINEAR ALGEBRA)

The Scientific Computing Group at Los Alamos National Laboratory

is currently seeking highly motivated graduate students to participate

in the Graduate Research Assistant program. Students with experience

in any or all of the following categories are encouraged to apply:

Parallel Computer Programming

Numerical Linear Algebra

Parallel Applications Development

Oil Reservoir Simulation and Geostatistics

Experience with Fortran 90, HPF, PVM, MPI and assembly languages on

parallel machines such as the Cray T3D, Connection Machine CM-5,

IBM SP-2, SGI Power Challenge and workstation clusters is desirable.

Experience with iterative linear solver methods such as conjugate gradient

methods and incomplete Cholesky preconditioners is also desirable.

A minimum GPA of 2.5 is required. Appointments can range from 3 to 12 months

in duration. Interested individuals are encouraged to contact Wayne Joubert

for more information:

Wayne Joubert

Los Alamos National Laboratory

Group CIC-3, MS B-256

Los Alamos, NM 87545

EMAIL: wdj@lanl.gov

FAX: (505) 667-1126

Los Alamos is an equal-opportunity employer.

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

From: Vladik Kreinovich <Vladik.Kreinovich@laforia.ibp.fr>

Date: Fri, 12 Jul 1996 11:22:40 +0200

**Subject: Contents, Reliable Computing**

Reliable Computing. - 1996. - N 2 (3). - 108 p.

CONTENTS

Preface 211

Robust algorithms that locate local extrema of a function of one

variable from interval measurement results: A remark

Christoph Eick and Karen Villaverde 213

Fast error estimates for indirect measurements: applications to

pavement engineering

Carlos Ferregut, Soheil Nazarian, Krishnamohan Vennalaganti,

Ching-Chuan Chang, and Vladik Kreinovich 219

Newton's constant of gravitation and verified numerical

quadrature

Oliver Holzmann, Bruno Lang, and Holger Sch\"utt 229

Two adaptive Gauss-Legendre type algorithms for the verified

computation of definite integrals

Walter Kr\"amer and Stefan Wedner 241

A quadratic-time algorithm for smoothing interval functions

Vladik Kreinovich and Karen Villaverde 255

Optimal interval enclosures for fractionally-linear functions,

and their application to intelligent control

Robert N. Lea, Vladik Kreinovich, Raul Trejo 265

If we measure a number, we get an interval. What if we measure a

function or an operator?

Joe Lorkowski and Vladik Kreinovich 287

New slope methods for sharper interval functions and a note on

Fischer's acceleration method

Jo\~ao B. Oliveira 299

Ordering events: Intervals are sufficient, more general sets are

usually not necessary

Alessandro Provetti 321

Reviews

Applications of Reliable Scientific Computing 329

Addresses of the Editorial Board members 332

Information for authors 334

Contents 335

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

From: Petr Prikryl <prikryl@beba.cesnet.cz>

Date: Fri, 12 Jul 1996 15:37:37 +0200 (MET DST)

**Subject: Contents, Applications of Mathematics**

APPLICATIONS OF MATHEMATICS

Volume 41, Number 4

Ivan Hlavacek, Michal Krizek, and Vladislav Pistora

How to recover the gradient of linear elements on nonuniform triangulations

Hans-Goerg Roos and Martin Stynes

Necessary conditions for uniform convergence of finite difference

schemes for convection-diffusion problems with exponential and parabolic

layers

Ivan Hlavacek, Jan Chleboun

A recovered gradient method applied to smooth optimal shape problems

Jan Lovisek

Singular perturbations in optimal control problem with application to

nonlinear structural analysis

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

End of NA Digest

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