### Today's Editor:

- Cleve Moler
- The MathWorks, Inc.
- moler@mathworks.com

- Congratulations to Bill Gear and Dick Tapia
- A Reception at the IMA Workshop
- Help Needed with SPARSE1.3
- Whittaker Confluent Hypergeometric Functions
- Special Issue of LAA Honoring Chandler Davis
- Re: LCAS, LAPACK and LINPACK
- Re: LCAS, LAPACK and LINPACK
- Re: LCAS, LAPACK and LINPACK
- Two Forthcoming SIAM Meetings
- Frontiers of Massively Parallel Computation
- World Congress on Computational Mechanics
- Mathematical Circus at ENS Lyon, FRANCE
- Symposium at the Interface: Computing Science and Statistics
- Position at University of Maryland, Baltimore County
- Position at CSRD, University of Illinois
- Position at University of Bath, UK
- Contents: IMA Journal of Numerical Analysis
- Contents: SIAM Applied Mathematics
- Contents: Interval Computations
- Contents: SIAM Optimization

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

From: Gene Golub <golub@a31.ima.umn.edu>

Date: Thu, 13 Feb 92 23:16:53 CST

**Subject: Congratulations to Bill Gear and Dick Tapia**

Congratulations to Bill Gear and Dick Tapia on their election to the

National Academy of Engineering.

The citations read as follows.

For Gear: For seminal work in methods and software for solving classes of

differential equations and differential-algebraic equations of significance

in applications.

For Tapia: For contributions in linear and nonlinear programming, and for

creative leadership in minority education in computer science.

Gene Golub

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

From: Gene Golub <golub@a31.ima.umn.edu>

Date: Fri, 14 Feb 92 8:52:11 CST

**Subject: A Reception at the IMA Workshop**

To: Attendees of the IMA Workshop on ITERATIVE METHODS FOR

SPARSE AND STRUCTURED PROBLEMS

You are cordially invited to a reception on

Sunday, Feb 23, 1992

at the

Kenwood Retirement Apartments

825 Summit Ave

(near Hennepin and Franklin)

Minneapolis

in the "Party Room" on the 15th floor.

7-10pm

Snacks and drink will be provided by Gene Golub and Bob Plemmons.

If possible, let us know if you can come.

REPLY-to: golub@ima.umn.edu or plemmons@ima.umn.edu

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

From: eg@itt-mta-gw2arpa.fal-braunschweig.dbp.de

Date: 10 Feb 92 7:06

**Subject: Help Needed with SPARSE1.3**

Hi, after having downloaded SPARSE1.3 from NETLIB and getting the

testprogram up and running pretty fast I get bogged down by unexpected

problems now. I am using SPARSE1.3 in a Fortran environment but cannot

get it to run correctly. Firstly, as a non C programmer I found 2 bugs

in the sfFortran conversion library (wrong order in parameter list, plain

variable where pointer was required). The coefficient matrix is set up

correctly but the solutions are wrong. Also I get error status 1 and 2

where they should not turn up (at spGetElement).

Now I suspect there might be other bugs in the Fortran conversion

library or elsewhere. Is there anybody around who has used SPARSE1.3

in the FORTRAN environment and who could help out? I am working on a

SPARC Platform SUN MP670.

Many thanks in advance.

Eildert Groeneveld

Institute of Animal Husbandry and Animal Behaviour

Federal Agricultural Research Centre (FAL)

W-3057 Neustadt 1

Mariensee

Hoeltystr. 10

Germany

Tel : 05034 871 155

Fax : 05034 871 143

e-mail : groeneveld@tierzucht-mariensee.fal-braunschweig.dbp.de

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

From: Christian de Polignac <POLIGNAC%FRILL52.bitnet@CUNYVM.CUNY.EDU>

Date: Thu, 13 Feb 92 17:23 N

**Subject: Whittaker Confluent Hypergeometric Functions**

Does anyone know Fortran subroutines for:

-Whittaker functions (see Magnus/oberhettinger/Soni)

M khi,mu (x) and W khi,mu (x) for x>0

-Confluent hypergeometic

1 F 1 (a,b;x)

Christian de Polignac

Institut Laue Langevin

BP 156 X

38042 Grenoble Cedex

France

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

From: Hans Schneider <hans@math.wisc.edu>

Date: Sat, 15 Feb 92 16:17:49 CST

**Subject: Special Issue of LAA Honoring Chandler Davis**

LINEAR ALGEBRA AND ITS APPLICATIONS

Special Issue Honoring CHANDLER DAVIS

Chandler Davis will reach the mandatory retirement age at the

University of Toronto this year. While he remains as vigorously active

as ever, this is an appropriate time to recognize his contributions to

this journal, to mathematics, and to our lives. A special issue of

LINEAR ALGEBRA AND ITS APPLICATIONS in honor of Chandler Davis is

scheduled for publication in the first half of 1994. The purpose of

this announcement is to solicit papers for this issue.

Papers are invited concerning any aspect of linear algebra, its

applications, and its interactions with the theory of operators on

Hilbert space. All contributions will subject to the normal reviewing

process.

Submissions should be sent by March 31, 1993 to one of the special

editors of this issue:

Rajendra Bhatia

Indian Statistical Institute

New Delhi 110016

INDIA

vikram!isid!rbh@shakti.ernet.in

Shmuel Friedland

Department of Mathematics

University of Illinois at Chicago

Box 4348, M/C 249

Chicago, IL 60680

U.S.A.

u12735@uicvm.bitnet

Peter Rosenthal

Mathematics Department

University of Toronto

Toronto, Ontario M5S 1A1

CANADA

rosent@math.utoronto.ca

Papers may also be submitted to the editor-in-chief of this Journal.

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

From: James Demmel <demmel@imafs.ima.umn.edu>

Date: Tue, 11 Feb 92 10:36:11 CST

**Subject: Re: LCAS, LAPACK and LINPACK**

I would like to add the following computational experience regarding the

development of portable software that can accommodate VAX D-format. In the

LAPACK project we have spent much of the last two weeks trying to get our

rather comprehensive test code to pass all its tests on a VAX in D-format. It

passes everywhere else we have tried so far, including IEEE arithmetic,

Crays, IBMs, and VAX single precision (F-format).

We have tried to write software that can robustly handle problems with

badly scaled data, including very small or very large values. The limits

on how small the data can be, vary for different classes of algorithm, but

may be SAFMIN/EPS, SQRT(SAFMIN) or SQRT(SAFMIN/EPS), where SAFMIN is a

"safe minimum" close to the underflow threshold, and EPS is the machine

precision. IN VAX D-format, these three expressions have the approximate

values 1.E-22, 1.E-20, and 1.E-11, which are hardly very tiny, especially

when compared with the machine precision of 1.E-17.

Our test software is designed to test the software close to these limits. The

narrow exponent range on the VAX (combined with the lack of gradual underflow)

has required us to do extra work, refining details of the routines and test

software, in order to get the routines to pass the tests. In the end we are

still left with a few large "test ratios" (basically scaled residual norms),

that we have not yet been able to diagnose or cure. Since these large residuals

only occur for badly scaled problems and only in VAX D-format, we have decided,

with some regret, to go ahead and release the software without having

eliminated them, since we do not want any more delay in releasing the software.

I mentioned this result to Pete Stewart, one of the original LINPACK

developers, and he said that they had never gotten LINPACK to work in all

cases in VAX D-format either, and had given up too. (In fact, Velvel Kahan

and I began our work on the bidiagonal SVD just by trying to fix the underflow

bug that caused the LINPACK SVD to occasionally fail to converge in Vax D.)

This confirms my opinion that it is not our software that

is poorly designed, but the VAX D format. Of course, it would be probably be

possible in the end to fix the problems with either LINPACK or LAPACK, but the

point is that a lot of extra work is required, and extra complexity must be

added to the code, which would not be needed for most other floating-point

formats in current use.

This (among other reasons) leads me to oppose a standard like LCAS that would

permit VAX D-format in the name of aiding portable software development.

Jim Demmel

Math Dept. and CS Division

U. C. Berkeley

demmel@cs.berkeley.edu

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

From: Somebody Dawson <dawson@rdvax.enet.dec.com>

Date: Wed, 12 Feb 92 07:53:18 PST

**Subject: Re: LCAS, LAPACK and LINPACK**

You are opposed to the LCAS because you are unable to write

successful test programs? I have trouble buckling my seat

belt, but still don't advocate the repeal of automotive

safety laws.

I think you are missing or ignoring the point. If the

parameters, like those required by LCAS, describing a

floating point data type were readily available, then it

would be far easier to write portable test procedures -- even

for data types as dubious as VAX D-format.

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

From: Richard Lehoucq <lehoucq@rice.edu>

Date: Thu, 13 Feb 92 12:57:30 CST

**Subject: Re: LCAS, LAPACK and LINPACK**

Jim,

One question. How does one determine a "safe minimum" for a particular

machine. I am aware that VAX D has the same smallest representable(normalized)

number in VAX D-format and VAX F-format. I'm under the impression that the

same smallest representable (normalized) number is (base)**(base**(number of

bits allowed in the exponent) - bias). Call this the "Platonic minimum".

Clearly your "safe minimum" is a number no smaller than this. Would this

SAFMIN be the smallest (normalized) number that can be safely recipricated?

Are you all writing up your experiences with "development of portable software"

in any type of report? I'd love to look through this.

When I was testing various eigensystem codes at IMSL we encountered the

same problems with VAX D format. In the case of the symmetric code

we had a test that checked to see whether to

skip a householder step (during the reduction to tri. form)if the

norm of the part of the vector that we wanted

to zero out was less than the "platonic minimum"/eps.(even after scaling the

original matrix!) Otherwise we ran the risk of losing orthogonalty of our

basis of computed eigenvectors. We took our cue from Wilkinson's remarks

in HACLA regarding the symmetric eigenvalue problem. This quick

test worked quite well in practice. Richard Hanson and I came to the conclusion

that there was only so much you can do about writing robust code for all

machines given the querks of a few "designed" F.P. units.

As you pointed out this is because of

the poor design(I agree with you) of VAX D-format. Remember Stan Brown's

F.P.A. model for well designed f.p.units? VAX D-format barely made it

with their "platonic minimum"/eps <(just barely) eps**2.

I learned alot of practical numerical analysis

when I worked at IMSL and one of the goals was to design and develop portable

scientific software. It's actually quite a fascinating "ordeal" to go thru.

Rich Lehoucq

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

From: Tina Flores <flores@siam.org>

Date: Wed, 12 Feb 92 11:45:23 EST

**Subject: Two Forthcoming SIAM Meetings**

Now available........

Programs and registration materials...

1. Fourth SIAM Conference on Optimization

May 11-13, 1992, Hyatt Regency Hotel, Chicago, Illinois

2. Sixth SIAM Conference on Discrete Mathematics

June 8-11, 1992, University of British Columbia,

Vancouver, Canada

To receive your copies, contact SIAM...now! Call

215-382-9800, fax 215-386-7999, e-mail meetings@siam.org

Many thanks.

Tina

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

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

Date: Wed, 12 Feb 92 09:10:28 -0500

**Subject: Frontiers of Massively Parallel Computation**

CALL FOR PAPERS

FRONTIERS '92: The 4th Symposium on the

Frontiers of Massively Parallel Computation

October 19-21, 1992

McLean Hilton McLean, Virginia

This symposium is the fourth in a series of biannual meetings on massively

parallel computation, focusing on research related to, or adaptable for,

systems with 1,000 or more processors. Submissions of original research

papers about any aspects of the design, analysis, development, and/or use

of massively parallel computers are solicited. Papers relating to high

performance computing and communications are of particular interest.

PAPER SUBMISSIONS:

The corresponding author is requested to include in a cover letter the

following information: (1) complete postal address; (2) electronic mail

address; (3) phone number; (4) fax number; (5) key phrases that characterize

the paper's topic; (6) whether the manuscript should be considered for poster

presentation if it is not accepted as a regular paper; (7) a statement that

the manuscript is unpublished and is not under review for another conference.

Please submit SIX (6) copies of a summary of original work, in English, to:

Professor H. J. Siegel

Program Chair, Frontiers '92

School of Electrical Engineering

1285 Electrical Engineering Building

Purdue University

West Lafayette, IN 47907-1285, USA

so that they arrive by MARCH 2, 1992. The summary text should be restricted

to TEN double-spaced (i.e., point size 12, vertical spacing 24) 8.5" x 11"

pages. References, figures, tables, etc., may be included in addition to

the ten pages of text. Submissions received after the due date or exceeding

the length limit may be returned and not considered. Submissions will be

acknowledged promptly by electronic mail and decisions sent by May 29, 1992.

Camera-ready copy for the proceedings (for both papers and posters) will be

due July 1, 1992. Submission related questions should be sent to the

internet address: front92@ecn.purdue.edu

Selected papers will be eligible for publication in a dedicated issue of the

Journal of Parallel and Distributed Computing, to be guest-edited by Joseph

JaJa, University of Maryland, and David Schaefer, George Mason University.

WORKSHOPS:

Proposals are solicited for organizing half-day workshops that will be held

on the first day of the symposium. Please send your proposal by February 3,

1992 to:

Professor Isaac D. Scherson

Workshops Chair, Frontiers '92

Department of Information & Computer Sciences

University of California- Irvine

Irvine, CA 92717, USA

e-mail: wsf92@ics.uci.edu

fax: (714) 856-4056

TUTORIALS:

Proposals are solicited for organizing full or half-day tutorials that will

be held on the first day of the symposium. Please send your proposal by

February 3, 1992 to:

Ms. Judy Devaney

Tutorials Chair, Frontiers '92

NIST

Building 225, Room B-146

Gaithersburg MD 20899-0001, USA

e-mail: judy@cam.nist.gov

phone: (301) 975-2882

COMMERCIAL EXHIBITORS:

For information, please contact:

Professor Abdou Youssef

Exhibits Chair, Frontiers '92

Department of EE and CS

School of Engineering and Applied Science

George Washington University

Washington, DC 20052, USA

e-mail: youssef@gwusun.gwu.edu

phone: (202) 994-5513

GENERAL CHAIR - Pearl Wang, George Mason University

PROGRAM CHAIR - H.J. Siegel, Purdue University

PROGRAM VICE-CHAIRS

Algorithms - Leah Jamieson, Purdue University

Architecture - Ken Batcher, Kent State University

Applications - Jack Dongarra, Univ Tenn/ORNL

Software - Andre van Tilborg, ONR

PROGRAM COMMITTEE

Fran Berman, UC - San Diego Tom Blank, Maspar Computer

Jim Browne, Univ Texas-Austin Tom Casavant, Univ Iowa

Janice Cuny, Univ Massachusetts Larry Davis, Univ Maryland

Doug DeGroot, Texas Instruments Hank Dietz, Purdue Univ

John Dorband, NASA GSFC John Feo, Lawrence Livermore Nat Lab

Jeanne Ferrante, IBM TJ Watson Raphael Finkel, Univ Kentucky

Geoffrey Fox, Syracuse University Richard Freund, NOSC

John Gustafson,Ames Lab/Iowa St. Susanne Hambrusch, Purdue Univ

Mary Jane Irwin, Penn State Univ Anita Jones, Univ Virginia

Russ Miller, SUNY - Buffalo Dennis Parkinson, AMT

Donna Quammen, George Mason U John Riganati, SRC

Sartaj Sahni, Univ Florida Thomas Schwederski,

Inst. Microelectronics Stuttgart

Marc Snir, IBM TJ Watson Ted Tabloski, Thinking Machines

Stephen Taylor, Caltech Patricia Teller, NM State Univ

Elizabeth Williams, SRC Michael Wolfe, Oregon Grad Inst.

Pen-chung Yew, Univ Illinois Abdou Youssef, Geo Washington U

ADVISORY BOARD

Ken Batcher, Kent State Univ Jerry Brackbill, LANL

Harold Breaux, BRL Mel Ciment, NSF

Hank Dardy, NRL Larry Davis, Univ Maryland

Marvin Denicoff, TMC John Dorband, NASA GSFC

Milt Halem, NASA GSFC R. Michael Hord, GE

Gregory McRae, CMU Paul Messina, Caltech

Tor Opsahl, CIT David Schaefer, George Mason U

Bill Scherlis, DARPA Paul Schneck, SRC

Francis Sullivan, NIST Charles Taylor, UCLA

Sponsored by IEEE Computer Society

NASA Goddard Space Flight Center

If you would like an advance program and registration information

for FRONTIERS '92, please send your name and address to

James Fischer

Frontiers '92

Code 932.1

NASA Goddard Space Flight Center

Greenbelt, MD 20771 USA

email: f92info@gmuvax2.gmu.edu

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

From: Taketomo Mitsui <a41794a@nucc.cc.nagoya-u.ac.jp>

Date: Thu, 13 Feb 92 20:03:31 JST

**Subject: World Congress on Computational Mechanics**

Dear Colleagues on NA net;

Even though it is now early in 1992, the Organizer of the following

Congress in 1994 wishes to circulate its announcement.

T. Mitsui

WCCM III

(The Third World Congress on Computational Mechanics)

August 1 - 5, 1994

Nippon Convention Center, Chiba, Japan

Following fruitful conferences at Austin (USA) and Stuttgart (Germany),

WCCM III is being arranged to be held on August 1 - 5, 1994 at the Nippon

Convention Center, Makuhari, Chiba Prefecture, Japan. Makuhari, located

halfway between the New Tokyo International Airport at Narita and metro-

politan Tokyo, is the largest and newly-bulit convention city in Japan.

The genral form of the WCCM III will follow those of the preceding

Congresses. The Organizing Committee, however, is attempting to stress

on the following points:

1. An ambitious program will be planned to cover challenging topics in

basic sciences and technologies.

2. A number of best papers will be given awards through recommendations of

an international paper reviewing committee.

3. Promising young researches from all over the world will be encouraged

to attend the Congress.

The WCCM III at Chiba expected to be a forum to communicate ideas and

new developments from a wide range of views. Researchers and engineers

interested in this field are welcome to the Congress.

Scientific and commercial exhibitions will be held concurrently.

Congress Themes:

(i) Mathematical modelling and numerical methods.

(ii) Solid and structural mechanics.

(iii) Fluid dynamics.

(iv) Nonlinear dynamics.

(v) Material science.

(vi) CAD/CAM/CAE, AI, Expert System, CG.

(vii) Smart algorithms and adaptive methods.

(viii) Parallel computing.

(ix) Computational physics

(x) Industrial applications.

The official language will be English. Detailed information regarding call

for papers, official registrations, accommodation and others will be

announced in the middle of 1992.

Contact address:

Prof. T. Kawai

WCCM III Office

Department of Electrical Engineering

Science Univsersity of Tokyo

1-3 Kagurazaka, Shijuku-ku, Tokyo 162

Japan

Tel: +81-3-3235-5630

Fax: +81-3-3260-8236.

The Congress is organized by The International Association for

Computational Mechanics (IACM).

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

From: Claudine Schmidt-Lain <egerbi%frensl61.bitnet@CUNYVM.CUNY.EDU>

Date: Fri, 14 Feb 92 15:55:23 +0100

**Subject: Mathematical Circus at ENS Lyon, FRANCE**

FIRST ANNOUNCEMENT

OF

MATHEMATICAL CIRCUS

Location: Ecole Normale Superieure de Lyon, France

Dates: April 3-4 1992

" SOME MATHEMATICAL ASPECTS OF COMBUSTION THEORY"

The "RENCONTRES MATHEMATIQUES", Mathematical Circus, is an informal

meeting of mathematicians to gather around a principal speaker and a

leading subject. It always takes place at ENSL, about every month. The

previous ones were about homogeneisation theory, bifurcation theory,

kinetics equations ...

This time the leading speaker is H. BERESTYCKI, University of Paris VI.

He will give three talks covering various aspects of flame theory, free

boundary problem, qualitative aspects of elliptic equations and stability.

He will be surrounded by:

C-M BRAUNER: University of Bordeaux, France

G. JOULIN: ENSMA Poitiers, France

W. DOLD: University of Bristol, England

The circus is unique in that it is VERY informal, and thus allows

us to talk about the very latest results as well as interesting work

in progress. In our previous meetings there has been lots of informal

discussion and a very healthy mix of industrial and academic participants.

GRADUATE STUDENTS ARE WELCOME !

We have arranged special conference train fares with SNCF. Ask just

for a "Congress Ticket".

A restricted number of uncharged rooms are at our disposal on Campus.

There is also some hotels a few minutes' ride from ENSL campus.

To register, please send e-mail to Claudine Schmidt-Laine at the

adress below. As usual, there is no registration fee.

The circus will begin on Friday morning and will end on Saturday noon.

For further information please contact:

Claudine Schmidt-Laine

Unite de Mathematiques Pures et Appliquees

Ecole Normale Superieure de Lyon

46, Allee d'Italie

F-69364 LYON Cedex 07

FRANCE

Phone: (33) 72.72.80.34

Fax: (33) 72.72.80.80

e-mail: schmidt@frensl61.bitnet

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

From: Joe Newton <jnewton@stat.tamu.edu>

Date: Fri, 14 Feb 92 09:33:19 CST

**Subject: Symposium at the Interface: Computing Science and Statistics**

INTERFACE `92 INFORMATION AND REGISTRATION FORM

H.J. Newton, Department of Statistics, Texas A&M Univ.

College Station, Texas 77843-3143, (409) 845-3141,

jnewton@stat.tamu.edu, FAX: (409) 845-3144

24th Symposium on the Interface: Computing Science and Statistics

THEME: Graphics and Visualization

MARCH 18-21, 1992 - COLLEGE STATION, TEXAS---COLLEGE STATION HILTON

KEYNOTE SPEAKER: James Blinn, `Designing Animation for Mathematics Education'

PLENARY SPEAKER: Edward Tufte, `Envisioning Information'

INVITED SESSIONS:

Visualization Methods for Science and Statistics

Visualizing Multivariate Data and Functions

Geographic Information Systems

Visualization in Climate Research

Visualization Software

Visualizing Programs

Wavelets and Nonparametric Modeling

Nonparametric Regression

Spatial Time Series

Time Series Computing

Neural Networks

Conditional Methods in Regression and Logistic Regression

Bayesian Computing

Sampling Based Approaches for Bayesian Inference

Advanced Statistical Techniques in Industry

Statistical Methods in Software Quality Evaluation

Building on S

Unix Tools for Statistical Computing

High Performance Computing

VISUALIZATION SHORT COURSE

Professor Edward Tufte will give a short course entitled "Design

for Data Visualization" on Thursday evening, March 19. Edward

Tufte teaches at Yale University where he is Professor of

Political Science and Statistics, Lecturer in Law, and Senior

Critic in Graphic Design. He has written six books, including

the widely acclaimed The Visual Display of Quantitative

Information. There is no fee for the short course.

More information, including electronic registration forms, is available

from Joe Newton <jnewton@stat.tamu.edu>

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

From: Thomas Seidman <seidman@umbc1.umbc.edu>

Date: 13 Feb 92 08:35:00 EST

**Subject: Position at University of Maryland, Baltimore County**

ANNOUNCEMENT OF POSITION AT UMBC

The Department of Mathematics and Statistics at the University of Maryland

Baltimore County has been authorized to hire a Visiting Assistant Professor for

a two-year term, starting in the Fall of 1992, with teaching duties of 3

courses in each semester. As replacement of faculty on leave, this is not a

tenure-track position. An additional such position, with a one-year term, may

also become available.

Preference will be given to a candidate with active research interests in

Optimization, in Nonlinear Partial Differential Equations and/or related

Numerical Analysis, or such as to complement the existing Mathematical

strengths of the Department. CV and 3 reference letters should be sent to

Thomas I. Seidman, Acting Chair, Department of Mathematics and Statistics,

University of Maryland Baltimore County, Baltimore, MD 21228-5398. Applicants

will be considered until the position is filled. AA/EOE: women, minorities,

and disabled persons are encouraged to apply.

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

From: E. Gallopoulos <stratis@csrd.uiuc.edu>

Date: Fri, 14 Feb 92 18:27:12 CST

**Subject: Position at CSRD, University of Illinois**

POSTDOCTORAL RESEARCH ASSOCIATE POSITION

Center for Supercomputing Research and Development

University of Illinois at Urbana-Champaign

The Center for Supercomputing Research and Development (CSRD)

at the University of Illinois at Urbana-Champaign is seeking

Postdoctoral Research Associates for August, 1992. Our objective

is to provide one- or two-year opportunities for young scholars

to initiate their research careers in an exciting

and supportive environment.

Applicants are sought with interests in the areas of computational

sciences and engineering and parallel computing including:

parallel algorithms, applications of parallel computers to science

and engineering, computer architecture and system packaging,

operating systems, performance evaluation,

problem-solving environments, and restructuring compilers.

Selection will be based upon evidence of professional promise,

capacity for independent work, and outstanding achievements to date.

Doctoral degree in computer science, electrical engineering,

or a related field is required; degree should be received since 1989.

Appointees will devote most of their efforts to independent research

or participate in on-going projects. For those interested,

there may be opportunities to lecture/teach.

Salaries will be negotiable; appointments will be full-time temporary.

For full consideration, applications should be received by March 6, 1992.

Interviews may take place before the closing date, but final decisions

will not be made until after Mar. 6. Please refer to ad PD91 and send

applications (i.e., a letter of interest and complete Curriculum Vitae,

including names, addresses and telephone numbers of at least 3 references) to:

Ms. Sandy Cunningham

Center for Supercomputing Research and Development

University of Illinois at Urbana-Champaign

305 Talbot Lab

104 S. Wright St.

Urbana, IL 61801

Telephone: 217-244-1611

The University of Illinois is an Affirmative Action/Equal Opportunity Employer.

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

From: A. Spence <A.Spence@maths.bath.ac.uk>

Date: Fri, 14 Feb 92 9:51:16 GMT

**Subject: Position at University of Bath, UK**

UNIVERSITY OF BATH

SCHOOL OF MATHEMATICAL SCIENCES

LECTURESHIP IN NUMERICAL ANALYSIS / COMPUTATIONAL APPLIED MATHEMATICS

Applications are invited for the above lectureship which is

available from 1st September 1992 in the School of Mathematical Sciences.

The successful applicant will have research interests in Numerical Analysis

or Computational Applied Mathematics. This is an area of considerable

strength and activity, which is at present supported by one Professor,

three lecturers, four postdoctoral Research Officers,

one postgraduate Research Officer, and six postgraduates.

Within the Mathematics Group there is considerable involvement

in the mathematics of nonlinear systems and this provides a strong

unifying theme for much of our activity in pure and applied Mathematics.

Members of staff have access to modern and powerful computing facilities.

There is an extensive network of SUN-4 workstations connected by

an ethernet, and a SIMD MasPar machine with 1024 processors. A

32-transputer MEIKO Computing Surface, part of a collaborative

venture involving several other Schools is also available

for MIMD computation.

The major criterion for making the appointment will be strength

in research: only persons of proven research record or recognisable

research potential will be considered.

The person appointed will be expected to teach at undergraduate and

postgraduate levels in the School as well as probably doing some service

teaching. At the beginning, the teaching load will be

commensurate with age and experience. The new lecturer will

be expected to develop independent research and to play an

active role in the research activities of the School.

Closing date: 6th March 1992.

Candidates seeking further information may contact Alastair Spence

Telephone: +44 225 826011, fax: +44 225 826492,

email: as@uk.ac.bath.maths or na.spence@na-net.ornl.gov

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

From: Iain Duff <ISD%IBM-B.RUTHERFORD.AC.UK@VTVM2.CC.VT.EDU>

Date: Mon, 10 Feb 92 08:50:18 GMT

**Subject: Contents: IMA Journal of Numerical Analysis**

IMA JOURNAL OF NUMERICAL ANALYSIS - Volume 12, Number 1

J J Du Croz and Stability of methods for matrix inversion

N J Higham

M Arioli and Stability, convergence and conditioning

F Romani of stationary iterative methods of the form

(i+1) (i)

x = Px + q

for the solution of linear systems

J A Cuminato Uniform convergence of a collocation method

for the numerical solution of Cauchy-type

singular integral equations: a generalization

W Han The P-version penalty finite element method

G J Cooper Weak nonlinear stability of implicit

Runge-Kutta methods

C A Hall and Approximation methods in the computer

T A Porsching numerically controlled fabrication of optical

surfaces Part I: finite dimensional material

removal profile spaces.

N Osada A method for obtaining sequence transformations

B Mulansky Chebyshev approximation by spline functions

with free knots

R K Beatson and Univariate interpolation on a regular finite

M J D Powell grid by a multiquadric plus a linear polynomial

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

From: Laura Helfrich <helfrich@siam.org>

Date: Tue, 11 Feb 92 08:06:50 EST

**Subject: Contents: SIAM Applied Mathematics**

Table of Contents

SIAM Journal on Applied Mathematics

Vol. 52, No. 3, June 1992

On a Minimization Problem Arising in Wetting

Amy Novick-Cohen

Symmetric Supersonducting States in Thin Films

Sheng Wang and Yisong Yang

A New Method for Mass Transport Problems with an Application to Haemofilters

N.F. Britton

The Electrostatic Field About a Thin Oblate Dielectric Body of Revolution

Richard Barshinger

Rotating Waves for Semiconductor Inverter Rings

Cc. Lim, J. M. Pimbley, C. Schmeiser, and D. W. Schwendeman

Charge Carrier Dynamics in Alpha Particle Tracks

J. M. Pimbley and J. D. Cole

Inverse Problems for Metal Oxide Semiconductor Field-Effect Transistor Contact

Resistivity

Weifu Fang and Ellis Cumberbatch

The Interior Radon Transform

Peter Maass

An Inverse Eigenvalue Problem for and Arbitrary, Multiply Connected, Sounded

Domain in R3 with Impedance Boundary Conditions

E. M. E. Zayed

On Exponential Asymptotics for Nonseparable Wave Equations III: Approximate

Spectral Bands of Periodic Potentials on Strips

R. E. Meyer and M. C. Shen

Frequency and Phase Locking of Spatially Periodic Perturbed Sine-Gordon Breather

Trains

M. Gregory Forest, S.-P. Sheu, and Amarenda Sinha

Defect Dynamics in a Dissipative System

F. Moura Neto

Bifurcation to Rotating Waves in Equations with O(2)-Symmetry

P. J. Aston, A. Spence, and W. Wu

Numerical Stability Analysis of a Class of Functional Differential Equations

W. D. Curtis, R. O. Fox, and K. Halasi

Stability and Bifurcation for a Multiple-Group Model for the Dynamics of

HIV/AIDS Transmission

Wenzhang Huang, Kenneth L. Cooke, and Carlos Castillo-Chavez

Analysis of a Model Representing Stage-Structured Population Growth with State-

Dependent Time Delay

Walter G. Aiello, H. I. Freedman, and J. Wu

A Discussion of the Quasi-Euler--Lagrange Equation

William Roger Fuller

A Processor-Shared Queue That Models Switching Times: Normal Usage

Charles Knessl and Charles Tier

On Faster than Nyquist Signaling: Further Estimations on the Minimum Distance

D. Hajela

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

From: Baker Kearfoot <rbk5287@usl.edu>

Date: Thu, 13 Feb 92 00:38:18 CST

**Subject: Contents: Interval Computations**

CONTENTS OF THE SECOND ISSUE OF INTERVAL COMPUTATIONS

Research Articles

S.Shary Optimal Solution of interval linear algebraic systems. I. (in English)

V.Kreinovich, A. Bernat, E. Villa, Y.Mariscal Parallel Computers.

Estimate errors caused by imprecise data (in English)

Computer Tools

R.Hammer, M.Neaga, D.Ratz, D.Shiriaev PASCAL-XSC: A new language for scientific

computing (in Russian)

Advertisement

The full translation into Russian of the ANSI/IEEE standards on computer

arithmetic

Program package ASIAS

Reviews and Abstracts

P.S.Pankov. Review of the new monograph: Two-Sided Numerical Methods,

by B.S. Dobronets and V. V. Shaydurov (in English)

Meetings

Actual problems of applied mathematics. All-Union conference.

Saratov May 20-22, 1991. A brief report (English and Russian)

A.Davidenkoff, Advanced seminar on programming languages for scientific/

engineering computation, Leningrad, June 3-6, 1991. A summarizing report

(in English)

Interval Subjects at the SCAN-1991 Symposium. Information (Russian)

Resolution of the 8-th All-Union Workshop on interval mathematics.

Bishkek, October 1-3, 1991 (English)

Preliminary announcement, call for papers and further information for a

conference on numerical analysis with automatic result verification.

Lafayette, Louisiana, February 25 -- March 1, 1993 (English)

Bibliography of Soviet works on interval computations. Part 1 (English)

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

From: SIAM <gallaghe@siam.org>

Date: Thu, 13 Feb 92 13:58:48 EST

**Subject: Contents: SIAM Optimization**

SIAM Journal on Optimization

May 1992 Volume 2, Number 2

CONTENTS

Dual Methods in Entropy Maximization. Application to Some Problems in

Crystallography

Andree Decarreau, Danielle Hilhorst, Claude Lemarechal, and Jorge Navaza

A Low Complexity Interior-Point Algorithm for Linear Programming

Michael Todd

An SQP Augmented Lagrangian BFGS Algorithm for Constrained Optimization

R. H. Byrd, R. A. Tapia, and Yin Zhang

A Structure Exploiting Algorithm for Nonlinear Minimax Problems

Andrew R. Conn and Yuying Li

Optimal Distribution of Larvicide in Running Waters

Alain Chalifour and Michel C. Delfour

On the Superlinear and Quadratic Convergence of Primal-Dual Interior Point

Linear Programming Algorithms

Yin Zhang, Richard A. Tapia, and John E. Dennis, Jr.

A Robust Trust Region Method for Constrained Nonlinear Programming Problems

James V. Burke

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

End of NA Digest

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