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

- Please Keep NA Digest Articles Short
- Ivo Babuska Receives Honorary Doctorate
- Second Edition of the LAPACK Users' Guide
- Greengard Method
- Incomplete Bessel Function
- Pentium Division Difficulties
- Conference on Dynamical Systems/Numerical Analysis
- Conference on Centenial Hurwitz on Stability Theory
- ICFD Conference
- Advances and Trends in Computational and Applied Mathematics
- FTP Site at University of Iowa
- Copenhagen PARA94 Proceedings
- Dundee NA Conference 1995
- Position at Stanford
- Position at University of Maryland, Baltimore County
- Postdoctoral Position at North Carolina State
- Position at University of Vermont
- Research Fellowship at Australian National University
- Position at Laval University, Quebec
- Position at Louisiana Tech University
- Positions at University of Edinburgh
- Contents, IMA Journal of Numerical Analysis
- Contents, Math of Control, Signals and Systems

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

From: Cleve Moler <moler@mathworks.com>

Date: Tue Dec 6 02:34:27 EST 1994

**Subject: Please Keep NA Digest Articles Short**

I would like to ask everyone to shorten their contributions

to the NA News Digest. I try to keep each week's edition under

1000 lines of text. Some of the items that are contributed are

longer than that by themselves.

Please try to limit your contribution to a few dozen lines.

If you have a longer announcement, summarize it and include an

e-mail or FTP address for the complete document. If it's a

meeting announcement, most of our readers are not immediately

interested in the times for the coffee breaks or the special

price at the local motel.

The text should be ASCII characters, with at most 80 characters

per line, no tabs and no Macintosh "special quotes" or other

nonstandard characters. A limited amount of Tex notation is

certainly OK, but don't assume everybody has a Tex viewer.

Contributions should be sent to:

na.digest@na-net.ornl.gov

Thanks for your support of the NA News Digest and for your

brevity in future contributions.

-- Cleve Moler

Editor, NA News Digest

moler@mathworks.com

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

From: Leonidas Xanthis <xanthisl@westminster.ac.uk>

Date: Friday, 02 Dec 1994 18:40

**Subject: Ivo Babuska Receives Honorary Doctorate**

Professor Ivo Babuska of the University of Maryland was awarded

the degree of Doctor of Science `Honoris Causa' by the University

of Westminster at a ceremony that took place in London on Monday

28th of November 1994.

The citation: Professor Ivo Babuska is an internationally

distinguished applied mathematician, numerical

analyst and educator, who pioneered theoretical

and applied research in the field of reliability

of finite element methods, e.g. a posteriori

error estimation and other adaptive procedures.

He also laid the foundations and practice of the

hp-version of finite element methods. The well-known

Babuska-Brezzi condition (obtained independently by

Babuska and Brezzi) became the basic theoretical tool

for the analyses of the various finite element methods

(e.g. mixed methods) which profoundly influenced both

the theory and practice of computational mechanics.

He is a prime example of a fine mathematician also

serving engineering.

Leonidas Xanthis, Centre for Techno-Mathematics &

Scientific Computing, University of Westminster, London, England.

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

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

Date: Fri, 2 Dec 1994 21:07:12 -0500

**Subject: Second Edition of the LAPACK Users' Guide**

We have just finished the 2nd edition of the LAPACK Users' Guide (LUG).

SIAM will be publishing this edition, which should be available in

hardcopy around February. The list price is $28.50 and the SIAM member

price is $22.80.

As with the first edition, the royalties from the sales of this

book are being placed in a fund to help students attend SIAM meetings

and other SIAM related activities. This fund is administered by SIAM

and qualified individuals are encouraged to write directly to SIAM

for guidelines.

SIAM has allowed us display the html version of the LUG on the Internet.

To access this through a mosaic interface use the url:

http://www.netlib.org/lapack/lug/lapack_lug.html

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

From: Donald Fredkin <drf@pallas.ucsd.edu>

Date: Fri, 2 Dec 1994 03:55:39 -0800 (PST)

**Subject: Greengard Method**

I was asked yesterday at a meeting whether multigrid (whose application to

an applied physics problem one of my graduate students had just explained)

was related to "the Greengard method". We have not heard of the Greengard

method. Can anyone answer the question and, perhaps, give us a pointer to

the Greengard method?

Thanks.

Donald R. Fredkin

drfredkin@ucsd.edu

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

From: Isabelle Flamant <flamant@messiaen.scf.fundp.ac.be>

Date: Tue, 29 Nov 94 14:28:14 +0100

**Subject: Incomplete Bessel Function**

Hello,

I need to calculate the incomplete Bessel

function WHICH DEPENDS ON TWO ARGUMENTS X

AND Y. The form of this function is defined

by the formula,

inf

K (x,y)= int exp(-(xt+(y/t))) * (t**(n-1)) dt

n 1

with x and y.gt.0 and arbitrary n.

More particularly, I have to evaluate this for

n=0.

Does anybody have any information on the availability

of algorithm(s) for this.

Thanks in advance

Isabelle Flamant

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

From: Cleve Moler <moler@mathworks.com>

Date: Tue Dec 6 02:23:11 EST 1994

Status of a Hard/Software Pentium FDIV Workaround

and of a Pentium-aware MATLAB

A couple of days ago, Tim Coe, Terje Mathisen and I proposed a

workaround for the Pentium FDIV bug. This is a short report on

the status of that proposal.

We have now joined forces with Peter Tang, a computer scientist from

Argonne Laboratory who is currently visiting the Chinese University

of Hong Kong, and a team of computer scientists and engineers from

Intel Corporation. It is our intention to refine and implement the

workaround in such a way that it can be used for compilers, libraries,

and floating point intensive applications. The result will be an

efficient and reliable assembly language macro replacement for the

Pentium FDIV instruction. This macro can be inserted by software

developers into their source code or emitted by compilers.

At the MathWorks, MATLAB is providing a prototypical implementation

and test bed for the approach. It had been our intention to have

a Pentium aware version of MATLAB available by now, but the expanded

scope of the project will add another week or two to the release date.

The basis for the workaround is Coe's characterization, now confirmed

by Tang and Intel, of bit patterns that must be present in the

divisors of operand pairs that lead to the error. A quick test

of the divisor is done before each FDIV is attempted. The absence

of the bit pattern indicates that the FDIV can be done safely. The

presence of the pattern does not guarantee that the error will

occur, it is just a signal that it might. In this case, scaling

both operands by 15/16 takes the divisor out of the unsafe region

and insures that the subsequent FDIV will be fully accurate.

With this approach, it is not necessary to test the magnitude of

the residual resulting from a division. It is known a priori that

all divisions will produce fully accurate results. An additional

test can compare the result of scaled and unscaled divisions and

thus count the number of FDIV errors that would occur on an

unmodified Pentium. We will offer this test in MATLAB, but it

may be desirable to turn it off for maximum execution speed.

A simple characterization of the regions to be avoided expresses

floating point numbers in the form

(n + f)*2^e

where, using MATLAB notation, n is an integer in the range 16:31

and f is a fraction in the range [0,1-eps/2]. The at-risk

divisors occur in the five bands characterized by

n = 17, 20, 23, 26 or 29

If the test were based on this fact alone, than 5/16 of uniformly

distributed operands would be rescaled.

A more refined characterization reduces the width of the bands

and hence the number of rescalings required by checking for the

number of high order bits in f that are equal to one. A test

requiring the first six bits of f to be one reduces the frequency

of rescaling to 5/1024.

For example, the denominator in Coe's now famous ratio

4195835/3145727

is

3145727 = 3*2^20-1 = 23.99999237060547*2^17

In this case, n = 23 and f = 1-2^(-17). The 17 consecutive high

order ones in f make this example an instance of worst-case error.

Together with the team at Intel, we are now in the process of

refining, proving correct, implementing, testing, timing, validating

and documenting this approach. We will continue to report on our

progress.

(For background information on the Pentium FDIV problem, including

our previous postings, see World Wide Web site www.mathworks.com

or anonymous FTP site ftp.mathworks.com, directory

/pub/tech-support/moler/Pentium.)

-- Cleve Moler

moler@mathworks.com

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

From: Luca Dieci <dieci@math.gatech.edu>

Date: Tue, 29 Nov 1994 11:15:13 -0500

First Announcement

Conference on Dynamical Systems & Numerical Analysis

Georgia Tech, Atlanta. December 14-16, 1995

This will be a three day conference on dynamical numerical

analysis. Specific topics represented include: convergence

of integration algorithms over long time intervals including

long time error bounds and convergence of invariant sets;

stability of integration algorithms over long time intervals

including preservation of dynamical structure and spurious

solutions; new approaches to error analysis, including

shadowing results and backward error analysis; design of

computational techniques for invariant sets including

algorithms to compute invariant torii, inertial manifolds,

heteroclinic orbits, homoclinic orbits, etc. etc. .

There will be no concurrent sessions. The following people

have agreed to give invited talks:

D. Aronson U. Ascher W. Beyn E. Doedel

C. Elliott C. Foias E. Hairer A. Iserles

P. Kloeden S. Larsson J. Lorenz K. Palmer

G. Raugel R. Russell J. Sanz-Serna R. Skeel

D. Stoffer A. Stuart E. Titi J. Yorke.

There will also be room for twenty-minute contributed talks.

The selection of these talks will be done so that the broadest

possible panorama of topics is represented.

We are seeking notification from all who are interested in

attending. We prefer to get responses by e-mail. If you

are interested in giving a contributed talk, please indicate

this in your response, and send a tentative title.

Sincerely, Luca Dieci and Don Estep.

School of Mathematics, Georgia Institute of Technology

Atlanta, GA, 30332 U.S.A.

e-mail: dieci@math.gatech.edu estep@math.gatech.edu

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

From: Marcela Kraemer <kraemer@sam.math.ethz.ch>

Date: Wed, 30 Nov 94 11:17:49 +0100

CONFERENCE ON CENTENIAL HURWITZ ON STABILITY THEORY

MONTE VERITA, TICINO, SWITZERLAND

May 21 - 26, 1995

With this conference ETH wants to honor Adolf Hurwitz who

was in Zuerich from 1892 - 1919. In 1895 his paper ``Ueber

die Bedingungen unter welchen eine Gleichung nur Wurzeln

mit negativen reelen Theilen besitzt'' appeared in print.

It represents a milestone in the development of the stability

of dynamical systems. The stability still plays a key role in

todays system theory. In the last few years there have been

major new developments especially in robust stability and

multidimensional systems.

The aim of the conference is to show in a few lectures the

historical development of the article by Hurwitz and its impact

in other fields. The major emphasis however will be on modern

development in stability theory and its application in theory

of control and numerics. In particular stability of the

following problems will be treated: linear, nonlinear,

timedependent systems, discretizations of ordinary and partial

differential equations, systems with mensional systems.

In addition rebust stability and problems related to

the stability radius will be treated.

Form of the conference

This conference will bring together about 60 people from the

various fields related to stability. There will be about

20 invited 40-minute lectures in which outstanding experts

will cover in survey lectures the history and the new

developments of stability theory and its application

especially in control theory and numerics. Other participants

may present short 20-minute talks.

Since the number of participants is limited, participation

is on invitation only. However, potential participants should

not hesitate to contact one of the organizers, specifying

their area of research and indicating whether they would like

to give a talk, and if so, on which subject.

The meeting takes place in a small conference centre on

the Monte Verita, near Locarno and Ascona, in the Italian

speaking part of Switzerland. Lodging and meals for the

participants are also provided in the conference centre,

which is run by ETH Zuerich.

Invited Speakers

B. Anderson (ANU Canberra)

B. Barmish (University of Visconsin-Madison, Madison)

R. W. Brockett(Harvard University)

G. Collins (University of Linz)

D. Hinrichsen (University of Bremen)

E. Jury (University of Miami)

R. Jeltsch (ETH Zuerich)

T. Kailath (University Stanford)

H. Kimura (University Osaka)

V. Kharitonov (State University St. Petersburg)

M. Mansour (ETH Zuerich)

R. Tempo (CENS-CNR Torino)

P. M. Van Dooren (University of Illinois, Urbana)

M. Vidyasagar (Center for Artificial Intelligence and Robotics Bangalore)

G. Zames (McGill University Montreal)

Organizers

Prof. Dr. Rolf Jeltsch

Seminar fuer Angewandte Mathematik

ETH Zentrum, HG G57.3

CH-8092 Zuerich

Telephone +41 1 632 3452

FAX +41 1 632 1085

E-mail jeltsch@sam.math.ethz.ch

Prof. Dr. Mohamed Mansour

Institut fuer Automatik

ETH Zentrum

CH-8092 Zuerich

FAX +41 1 632 1211

E-mail mansour@aut.ee.ethz.ch

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

From: Bette Byrne <Bette.Byrne@comlab.ox.ac.uk>

Date: Wed, 30 Nov 1994 10:44:58

This is a reminder that the closing date for the ICFD Conference on

Numerical Methods for Fluid Dynamics is Friday, 9th December, 1994.

CONFERENCE ON NUMERICAL METHODS

FOR FLUID DYNAMICS: OXFORD:

3 - 6 APRIL 1995

Organising Committee

Professor K W Morton (Oxford)

Dr M J Baines (Reading)

Dr M J P Cullen (Meteorolgical Office)

Dr C L Farmer (INTERA)

Dr M G Hall (DRA, Farnborough)

Invited Speakers include:

H Deconinck (VKI, Belgium)

J C R Hunt (Meteorological Office)

M A Leschziner (UMIST)

D Mavriplis (ICASE, NASA Langley)

K W Morton (Oxford)

K G Powell (Michigan)

A Quarteroni (Milan)

S Rill (Deutsche Aerospace Airbus GmbH, Germany)

A N Staniforth (Quebec)

B Stoufflet (Avions Marcel Dassault, France)

J Thomas (NASA Langley)

N P Weatherill (Swansea)

P Wesseling (Delft)

This is the fourth international conference on CFD

organised by the ICFD (Institute for Computational Fluid

Dynamics), a joint research organisation at the

Universities of Oxford and Reading set up in 1983 with

the support of the SERC to collaborate with industry in

this area. Previous conferences were held at the

University of Reading in 1985 and 1992 and at the

University of Oxford in 1988 in a series of conferences

on the same theme held on the two sites over the last

thirteen years.

Abstracts and enquiries regarding the conference should

be addressed to:

Mrs B Byrne

ICFD Secretary

Oxford University Computing Laboratory

Wolfson Building

Parks Road

Oxford OX1 3QD

UK

Telephone: 0865 273883

Facsimile: 0865 273839

Email: bette@comlab.ox.ac.uk

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

From: Graham Carey <pat@cfdlab.ae.utexas.edu>

Date: Wed, 30 Nov 1994 07:43:04 -0600

CALL FOR PAPERS

The Texas Institute for Computational and Applied Mathematics (TICAM)

announces a

SYMPOSIUM

To be held at

THE UNIVERSITY OF TEXAS AT AUSTIN

April 20-22, 1995

ADVANCES AND TRENDS IN COMPUTATIONAL AND APPLIED MATHEMATICS (CAM)

A two-and-one-half day symposium on recent advances and trends in the broad

area of computational and applied mathematics (CAM) is to be held at The

University of Texas at Austin during the third week of April, 1995. The

meeting will bring together leading researchers and practitioners in

Computational and Applied Mathematics from a world-wide community of

scholars and researchers in this area. The purpose of the meeting will be

to bring to the forefront the most recent advances in mathematics applied

to computation, in numerical algorithms and computational mathematics, in

parallel processing and supercomputing, and in applications to key fields

in science and engineering, including in particular computational fluid

dynamics, semiconductor modeling, acoustics and scattering, electromagnetic

field theory, nonlinear dynamics, numerical relativity, nonlinear control

theory, nonlinear solid mechanics, fluid structure interactions,

environmental modeling, reservoir simulation, and other areas. The meeting

will feature invited lectures from key scientists together with organized

sessions of contributed papers.

CALL FOR PAPERS: Persons wishing to contribute a paper for consideration

at the meeting should send a one-page (single-spaced) abstract to the

Organizing Committee prior to January 1, 1995.

Send by email to socam@ticam.utexas.edu

or US mail to:

Symposium on Computational and Applied Mathematics I

(SOCAM I)

Texas Institute for Computational and Applied Mathematics

TAY 2.400

The University of Texas at Austin

Austin, TX 78712

Pat Bozeman/G. F. Carey

ASE/EM Dept., WRW 301

The University of Texas at Austin

Austin, TX 78712

(512)471-4676

pat@cfdlab.ae.utexas.edu

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

From: Weimin Han <whan@oak.math.uiowa.edu>

Date: Thu, 1 Dec 1994 16:11:08 -0600

Reports on Computational Mathematics from the University of Iowa

are now available via anonymous ftp.

To get there type

ftp math.uiowa.edu

Login as anonymous, give your e-mail address as password, and then

cd pub/comp_math_rep

Now you will find index files (index.tex, index.dvi and index.ps) with

a list of the reports on Computational Mathematics, and a collection

of files report-xx.ps.Z . If you are interested in one of these

postscript files and have a postscript printer, you can download

the file, uncompress it using

uncompress report-xx.ps.Z

and print.

Some of the reports are not available from the ftp site. If you

are interested in such a report, you can request one by sending

a message to one of us:

K. E. Atkinson, e-mail address: atkinson@math.uiowa.edu

W. Han, e-mail address: whan@math.uiowa.edu

F. A. Potra, e-mail address: potra@math.uiowa.edu

E. Venturino, e-mail address: venturin@math.uiowa.edu

Best regards,

Weimin Han

Department of Mathematics

University of Iowa

Iowa City, IA 52242

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

From: Jerzy Wasniewski <unijw@unidhp1.uni-c.dk>

Date: Fri, 2 Dec 1994 15:29:06 +0200 (METDST)

The Copenhagen Workshop on Parallel Scientific Computing, PARA94

Proceedings has already been printed as a volume 879 of the Lecture

Notes in Computer Science series of Springer-Verlag. The list price

is DM 104,00. Every PARA94 speaker will receive one free copy.

Authors or editors of Springer books, as well as any contributing

authors, for example to LNCS proceedings (PARA94 proceedings), are

entitled to purchase this or any other book published by

Springer-Verlag for personal use at a discount of 33 1/3 % directly

from the Springer -Verlag company. Orders are to be sent to

Springer-Verlag, Vertrieb, Postfach 31 13 40, D-10643 Berlin, Fax:

+49 30 8207 301. A cheque covering two thirds of the list price plus

DM 5,00 for postage has to be enclosed to the order or a credit card

number has to be given; only Eurocard, Visa, Diners or American

Express are accepted.

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

From: D.F.Griffiths <dfg@mcs.dundee.ac.uk>

Date: Fri, 2 Dec 94 18:33:12 GMT

16th BIENNIAL CONFERENCE

ON

NUMERICAL ANALYSIS

UNIVERSITY OF DUNDEE

SCOTLAND, UK

Tuesday 27 June - Friday 30 June, 1995

Invited Speakers

The 16th Biennial Conference on Numerical Analysis will be held at the

University of Dundee from Tuesday 27 June - Friday 30 June, 1995

inclusive.

The special invited lecture in honour of A. R. Mitchell will be

presented by

Professor K. W. Morton

The other Principal Speakers will include

G. H. Golub A. Griewank D. F. Griffiths

R. Jeltsch C. Johnson W. A. Light

B. N. Parlett L. Petzold R. D. Russell

J. M. Sanz-Serna D. J. Silvester E. S u li

M. H. Wright J. Zowe

Leslie Fox Prize

The conference will be preceded by a one day meeting on Monday 26 June

at which talks will be given by those shortlisted for the Leslie Fox

Prize. Please indicate on the registration form whether you plan to

attend. A charge of 7 pounds will be made to cover lunch.

Address for correspondence

Dr D. F. Griffiths

Numerical Analysis Conference

Department of Mathematics and Computer Science

The University

Dundee DD1 4HN

Scotland, UK

Telephone: +44 (1382) 344467/344471

FAX : +44 (1382) 345516

email: na.griffiths@na-net.ornl.gov

or dfg@mcs.dund.ac.uk

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

From: Gene Golub <golub@sccm.Stanford.EDU>

Date: Mon, 28 Nov 94 19:30:31 PST

STANFORD UNIVERSITY

Faculty Openings

Stanford University's Departments of Computer Science and Electrical

Engineering seek applicants for a tenure track faculty position in

software systems and tools. There is particular interest in applicants

who have designed, built, and/or experimented with large software

systems or software tools that support engineering tasks. Example

tasks include parallel computing, computational modeling and

prototyping, scientific computing, rapid prototyping, embedded system

design and implementation, and real-time system design and

implementation.

Applicants should have a Ph.D. in a relevant field, and should have a

strong interest in both teaching and research. The appointment will

be made at the level of Assistant Professor. The successful candidate

will be expected to teach courses, both in the candidate's specialty

area and in related subjects, and to build and lead a team of graduate

students in Ph.D. research. Stanford University is an equal

opportunity employer and welcomes nomination of women and minority

group members and applications from them. Applications, including a

resume, a publications list and the names of five references, should

be sent by March 1, 1995, to:

Professor Hector Garcia-Molina

Search Committee Chairman

Computer Systems Laboratory, ERL 444

Stanford University

Stanford, CA 94305-4055

FAX:

Email: csl-search@shasta.stanford.edu

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

From: <suri@umbc2.umbc.edu>

Date: Wed, 30 Nov 1994 18:08:10 -0500 (EST)

UNIVERSITY OF MARYLAND BALTIMORE COUNTY

Department of Mathematics and Statistics

We invite applications for an anticipated visiting or tenure-track faculty

position in Numerical Analysis starting Fall 1995, subject to availability of

resources and administrative approval. The position is at the rank of assistant

professor; in exceptional cases, however, a more advanced appointment may be

considered. Excellence in both research and teaching is essential, and a

doctorate is required. Only candidates in the area of NUMERICAL ANALYSIS FOR

PARTIAL DIFFERENTIAL EQUATIONS need apply.

Applicants should arrange for a curriculum vitae, (p)reprints and three letters

of recommendation to be sent to:

Numerical Analysis Search Committee

Department of Mathematics and Statistics

University of Maryland Baltimore County

Baltimore, MD 21228-5398

Please submit applications by February 15, 1995. Women and minority candidates

are encouraged to apply. UMBC is an Affirmative Action/Equal Opportunity

Employer.

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

From: Kazufumi Ito <kito@takahanada.math.ncsu.edu>

Date: Thu, 1 Dec 1994 14:11:21 -0500

North Carolina State University

Center for Research in Scientific Computation

The Center for Research in Scientific Computation at N.C. State University

in collaboration with the Lord Corporation's Thomas Lord Research Center,

Cary, N.C., expects to make a University/Industry Cooperative Postdoctoral

Research appointment starting August 16, 1995 (availability of the position

is contingent upon funding). The appointment will be in the area of applied

mathematics and scientific computation. The successful candidate for this

position is expected to participate in a collaborative multidisciplinary

team carrying out fundamental research investigations to provide a better

understanding and predictive capability of the dynamic mechanical behavior

of rubber-like polymer composites (elastomers). The research efforts will

involve the modeling of nonlinear dynamics for viscoelastic composite

materials subject to large deformations, development of computational

methods for both forward and inverse problem analytic studies, and design

and performance of experiments to aid in model verification and validation.

Since the research efforts will require physical modeling, theoretical

analysis and computational skills, candidates who are outstanding in at

least one of these areas and willing and able to learn quickly in the

others will be given highest priority. This position offers a unique

opportunity for multidisciplinary mentored post-doctoral research on a

mathematical project arising in an industrial/university collaborative

effort.

Applicants should send a vita and brief description of research interests

and have three letters of recommendation sent to Professor H.T. Banks,

Center for Research in Scientific Computation/Dept of Mathematics, Box

8205, NC State University, Raleigh, NC 27695-8205. Applications will be

considered anytime after Feburary 15, 1995, as funding becomes available.

NCSU is an AA/EOE. In its commitment to diversity and equity, NCSU and the

CRSC seeks applications especially from women, minorities, and the

disabled.

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

From: Dave Dougherty <ddougher@uvm-gen.emba.uvm.edu>

Date: Thu, 1 Dec 1994 15:31:53 -0500 (EST)

POSITION DESCRIPTION

A non-tenure-track Research Assistant Professor position is available,

contingent upon funding, within the Department of Civil & Environmental

Engineering at the University of Vermont. A Ph.D. is required.

Candidates must demonstrate expertise in all of the following areas:

groundwater hydrology, subsurface characterization, remediation design,

artificial neural networks for characterization and inverse problems,

parallel computing, and optimization. Experience with a variety of

computing environments is needed. Highly developed written and

verbal communication skills are essential. Job requirements include

mentoring of graduate students, developing and sustaining an

outstanding research program, and interaction with other tenure-stream

and research faculty. Submit letter of interest, c.v.,

and the names of three references to CEE Research Assistant Professor

Search Committee, c/o Dawn Densmore, 109 Votey Building, College

of Engineering & Mathematics, University of Vermont, Burlington,

VT 05405. UVM is an equal opportunity/affirmative action

employer. Women and minorities are strongly encouraged to apply.

Applications received after December 15, 1994 may not receive

full consideration.

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

From: Richard Brent <rpb@nimbus.anu.edu.au>

Date: Fri, 2 Dec 94 17:13:07 EST

Australian National University

Cooperative Research Centre for

Advanced Computational Systems

Research Fellow or Fellow

(Level B or C)

REF: ACS 23.11.1.

The Cooperative Research Centre for Advanced Computational Systems (ACSys)

has been established under the Australian Government's CRC Program with the

mission of establishing an internationally competitive research capability

in the area of high performance advanced computational systems.

Facilities include access to a 128-cell Fujitsu AP1000, a 32-processor

Connection Machine (CM5), and a Fujitsu VP2200/10 vector processor.

The Numerical Algorithms Project is one of the research projects supported

by ACSys. Its aim is to develop state-of-the-art vector and parallel

algorithms for the solution of scientific and engineering problems,

and to implement the algorithms in high-quality transportable code.

The Project Leaders are Professors R. P. Brent and M. R. Osborne.

Applications are invited for a fulltime research position as Research Fellow

(academic level B) or Fellow (academic level C) in the Numerical Algorithms

Project of ACSys. Applicants should have a strong research record and interests

in one or more of the following areas:

vector/parallel algorithms for the solution of large

linear systems, eigenvalue problems, fast Fourier and related transforms,

differential equations, or optimisation;

vector/parallel algorithms for exact numerical computation;

parallel algorithms for combinatorial problems.

Enquiries to: Professor R. P. Brent

phone 61-6-2493329

FAX 61-6-2494948

e-mail rpb@cslab.anu.edu.au

Closing date: 16 December 1994 (may be extended)

Salary: In the range Research Fellow (level B) $A41,574 - $A49,370 p.a.

or Fellow (level C) $A50,928 - $A58,724, depending on qualifications and

experience. A market loading may be applicable.

Appointment: Appointment will be for a fixed period of up to three (3) years.

Applicants wishing to undertake a period of secondment from another position

will be considered.

Applications: Applications should quote the reference number, include names

and addresses (including FAX or e-mail) of at least three referees, and be

addressed to:

The Secretary

The Australian National University

Canberra, ACT 0200, Australia

Assessment will be against selection criteria. Applicants are advised to

obtain a copy of the selection documentation and to frame their application

accordingly. Receipt of applications will not be acknowledged unless requested.

Applications should be in duplicate and include curriculum vitae and a list of

publications.

The selection criteria are available by ftp from

nimbus.anu.edu.au:pub/NumAlgs/advert1.txt

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

From: Mario Fafard <Mario.Fafard@gci.ulaval.ca>

Date: Mon, 5 Dec 94 15:35:43 EST

PROFESSIONAL RESEARCH POSITION

Applications are invited for a professional research position in the area

computational mechanics with object oriented programming paradigms.

Description:

The candidate will join a team of researchers and graduate students in the

GIREF (Groupe Interdisciplinaire de Recherche en Elements Finis)

research group in finite element. The project consists in developping a

finite element shell based on Object Oriented Programming in C++ in the

following field: Fluid and Solid Mechanics and Heat Transfer. The main

tasks are:

*Definition of objects, classes and sub-classes, inheritances, data

encapsulation and polymorphism with the researchers of the GIREF

group

*Definition of the data structure and the object manager

*Defining and programming the finite element shell

*Writting all documentation relative to the development procedures:

proceeding of the meetings, technical documentation, development

schedules, meeting convocation, research funds applications , etc.

Qualifications:

The candidat must hold a bachelor degree in computer sciences or a Ph.D.

or a master's degree in enginering or in applied mathematics with

experience in engineering softwares and should be knowledgeable in the

area of Finite Elements, Object Oriented Programming and computer

programming in C++.

Starting date:

February 1995

Duration:

The initial appointment will be for one year with a possibility of renewal

for two more years.

Salary:

Commensurate with qualifications and experience.

Send complete curriculum vitae along with research experience, list of

publications and three references by Jannuary 31 1995, to:

Mario Fafard, Ph.D., ing.

CCivil Eng. dept.

Laval University

Quebec, Canada

G1K 7P4

Fax: 418-656-2928

Internet: mario.fafard@gci.ulaval.ca

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

From: Weizhong Dai <dai@math.latech.edu>

Date: Mon, 5 Dec 1994 15:23:05 -0600 (CST)

Louisiana Tech University has recently received approval to establish a

Ph. D. Program in Applied Computational Analysis and Modeling. This

program is a broadly based interdisciplinary Ph. D. program for students

desiring to study mathematics, computer science and a companion science

or engineering discipline so that they can apply their computational

skills to solve scientific problems.

In association with this program, applications are invited for a senior

level position in the Department of Mathematics and Statistics. We are

seeking an applied mathematician with a national reputation and a proven

grant record whose research interests are in numerical analysis (with

emphasis on numerical solutions for differential equations, modeling and

computational science). It is preferred that the candidate has

experience in applications related to fields other than mathematics, such

as scientific or industrial problems. To apply send a resume and three

letters of recommendation to: R.J. Greechie, Head, Department of

Mathematics and Statistics, Louisiana Tech University, Ruston, LA 71272.

Nominations and suggestions are welcome.

The screening of applications has begun and will continue until the

position is filled. Louisiana Tech University is an Equal

Opportunity/Affirmative Action Employer. We are interested in receiving

applications from qualified women and minorities.

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

From: Ken McKinnon <ken@mathematics.edinburgh.ac.uk>

Date: Mon, 5 Dec 94 20:54:37 GMT

Three positions at University of Edinburgh

DEPARTMENT OF MATHEMATICS AND STATISTICS

Lecturership in Mathematics (ref 490564)

Lecturer/Computing Officer (ref 490565)

Research position in Parallel Linear Programming (ref 490572)

Applications are invited for a new Lectureship in Mathematics tenable

from 1 September 1995 or earlier if this can be agreed. Preference will

be given to candidates with research interests in analysis (including

stochastic analysis), geometry, numerical analysis, analytical or

numerical aspects of partial differential equations, applied

differential equations or related areas. The position is tenable for

five years, but with the possibility of a permanent contract for an

exceptionally well qualified candidate.

Applications are also invited for a position as Lecturer/Computing

Officer commencing as soon as can be agreed. The position will entail

joint responsibilities for teaching and research and (with other

Computing Officers) the management and development of the Department's

computer installations. Candidates should have research interests in an

area of mathematics or statistics which makes significant use of

computation, and have practical experience in the running of computer

systems. The position is tenable for five years in the first instance.

Salary for both positions will normally be on the Lecturer Grade A scale

(14,756-19,326 pounds) or possibly on the Lecturer Grade B scale

(20,133-25,735 pounds)

Informal enquiries for the above posts may be addressed to Dr J Martin,

Department of Mathematics and Statistics, The King's Buildings,

Edinburgh EH9 3JZ, tel (44) 131-650-5062, email hod@maths.ed.ac.uk.

A research fellow is required to start work as soon as possible within a

group developing methods for linear programming on parallel computers.

The work of the group is focused on the revised simplex method and

decomposition methods together with solution techniques for unsymmetric

sparse linear systems. The group uses computers, in particular the

Cray T3D, in the Edinburgh Parallel Computing Centre, which is the UK

national centre. Applicants should have a strong background, preferably

to PhD level, in mathematics, operational research, computer science or

some other numerate discipline. Salary will be on the scale 13941 -

16191 pounds per annum according to age and experience and the contract

will be for between 26 and 23 months.

Informal enquiries may be addressed to Dr K McKinnon, email

ken@maths.ed.ac.uk.

Three copies of applications (one copy from overseas candidates),

including curriculum vitae and the names and addresses of three academic

referees, quoting the appropriate reference number should be addressed

to the Personnel Office, University of Edinburgh, 1 Roxburgh Street,

Edinburgh EH8 9TB. Further particulars may be obtained from this

address or from the Departmental WWW home page

(http://www.maths.ed.ac.uk).

Closing date: 20 January 1995.

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

From: Iain Duff <I.Duff@letterbox.rl.ac.uk>

Date: Thu, 1 Dec 94 09:59:43 GMT

IMA JOURNAL OF NUMERICAL ANALYSIS

Volume 15, Number 1. January 1995.

Janovsky V and Werner B

Constructive analysis of Takens-Bogdanov points with $Z_2$-symmetry.

Schecter S

Rate of convergence of numerical approximations to homoclinic

bifurcation points.

Jodar L and Ponsoda E

Non-autonomous Riccati-type matrix differential equations: existence

interval, construction of continuous numerical solutions and error bounds.

Fabiano R H, Knobel R, and Lowe B D

A finite-difference algorithm for an inverse Sturm-Liouville problem.

Miller J J H, O'Riordan E, and Shishkin G I

On piecewise-uniform meshes for upwind- and central-difference

operators for solving singularly perturbed problems.

Garcia-Archilla B and Mackenzie J A

Analysis of a supraconvergent cell vertex finite-volume method for

one-dimensional convection-diffusion problems.

Sun G and Stynes M

Finite-element methods for singularly perturbed high-order elliptic

two-point boundary value problems. I: reaction-diffusion-type problems.

Chu M T and Wright J W

The educational testing problem revisited.

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

From: Eduardo Sontag <sontag@control.rutgers.edu>

Date: Thu, 1 Dec 94 16:00:31 EST

TABLE OF CONTENTS, Math of Control, Signals, and Systems

Volume 7, Number 1

B. d'Andrea Novel, F. Boustany, F. Conrad, and B.P. Rao,

Feedback stabilization of a hybrid PDE-ODE system: Application to an overhead

crane,

pp. 1-22.

George Weiss,

Regular linear systems with feedback,

pp. 23-57.

Richard M. Murray,

Nilpotent bases for a class of non-integrable distributions with applications

to trajectory generation for nonholonomic systems

pp. 58-75.

Takao Nambu,

Approximation algorithm for the infinite-dimensional Lyapunov equation,

pp. 76-93.

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

End of NA Digest

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