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

- Is Scientific Computing Part of Computer Science?
- Difference Between 1x1 Matrices and Scalars
- GIDEN-2.0, Network Optimization Software
- New SuperLU Release
- MATLAB GUI for Ray Tracing
- Seminar Days at Catholic University of Nijmegen
- Conference in Lebanon on Research Trends in Science and Technology
- Durham Symposium on Geometric Integration
- Faculty Positions at Iowa State University
- Faculty Position at UJF / IMAG Grenoble
- Faculty Position at University of Florida
- Postdoctoral Position at CU Boulder
- Contents, Journal of Computational Analysis and Applications

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

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

From: Martin Berzins <martin@scs.leeds.ac.uk>

Date: Mon, 27 Sep 1999 20:11:03 +0100

**Subject: Is Scientific Computing Part of Computer Science?**

Is Scientific Computing part of Computer Science?

Every 5 years or so in the UK there is a Research Assessment Exercise

whereby the research of all University departments is examined.

The definition of Computer Science for the forthcoming exercise makes

no mention of Scientific Computing. I'd be interested in the reaction

of the NA-digest community to this.

martin@scs.leeds.ac.uk

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

From: Ilse Ipsen <ipsen@unity.ncsu.edu>

Date: Wed, 29 Sep 1999 15:51:54 -0400

**Subject: Difference Between 1x1 Matrices and Scalars**

There can be a difference between 1x1 matrices and scalars.

Consider the matrix product A*B*C where

A = [1 1] B = [1] C=[1]

[1] [2]

[3]

The product A*B*C is not defined because B*C is not defined.

Nevertheless MATLAB 5.3 computes the answer [2]

[4]

[6]

presumably because it associates (A*B)*C. In this case A*B

happens to be a scalar but should be treated as a 1x1 matrix.

Is this something to worry about?

Ilse Ipsen

ipsen@math.ncsu.edu

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

From: Jonathan Owen <owenj@iems.nwu.edu>

Date: Tue, 28 Sep 1999 07:37:25 -0500 (CDT)

**Subject: GIDEN-2.0, Network Optimization Software**

A beta release of the new GIDEN-2.0 software environment is

now available through the GIDEN web site:

http://giden.nwu.edu/

GIDEN is interactive software environment designed to

facilitate the visualization of network optimization

problems, solutions, and algorithms. Features of GIDEN

include the following:

- a graphical interface for building and

modifying networks

- facilities for algorithm animation

- an expandable toolkit of animated algorithm

implementations ("solvers")

- a library of network-related data structures

- platform independence (using Java)

The new version of GIDEN is available only as a Java-1.1

application. The software can be used on any Java-enabled

computing platform with an available Java virtual machine

(version 1.1.7 or higher). The GIDEN-2.0 download page

provides installers for several platforms, including an

installer for Win9x/NT that contains an appropriate Java

virtual machine.

See the GIDEN web site ("http://giden.nwu.edu/") for more

information on the project. Please direct any questions or

comments via email to "giden@iems.nwu.edu".

Jonathan H. Owen

Assistant Research Professor

Industrial Engineering and Management Sciences

Northwestern University

2145 Sheridan Road

Evanston, IL 60208-3119

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

From: Xiaoye Li <xiaoye@scg1.lbl.gov>

Date: Wed, 29 Sep 1999 14:26:19 -0700

**Subject: New SuperLU Release **

New SuperLU release

SuperLU is a general purpose library for the direct solution of

large, sparse, nonsymmetric systems of linear equations on high

performance machines. There are 3 versions:

SuperLU - serial

SuperLU_MT - parallel, for shared memory machines

SuperLU_DIST - parallel, for distributed memory machines

The distributed memory version, SuperLU_DIST, is new in this release.

It uses MPI for interprocess communication. "Static pivoting"

techniques are used to combine the numerical stability

of partial pivoting with the scalability of not pivoting,

The pre-ordering code for large diagonal elements was developed

by I. Duff and J. Koster.

In addition, we have also updated the serial SuperLU and

multi-threaded SuperLU_MT libraries. These updates include

bug fixes, modified MEX files to work with Matlab 5.x, and

adding the approximate minimum degree column ordering code

(COLAMD) developed by T. Davis, J. Gilbert, S. Larimore and E. Ng.

All three libraries, and a new User Guide, can be obtained at

http://www.netlib.org/scalapack/prototype/

This is joint work of James Demmel (demmel@cs.berkeley.edu) at

UC Berkeley, John Gilbert (gilbert@parc.xerox.com) at Xerox PARC and

Xiaoye S. Li (xiaoye@nersc.gov) at Lawrence Berkeley National Lab.

The project has been funded by DOE, NSF and DARPA.

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

From: Jean-David Benamou <Jean-David.BENAMOU@inria.fr>

Date: Thu, 30 Sep 1999 09:50:26 +0200

**Subject: MATLAB GUI for Ray Tracing**

I have written Matlab GUI called GROLAB (Geometric Rays Optical Lab).

It is designed to provide easy interactive access to 2-D point source

optic ray tracing. The user can import models and also reshape them

to a limited extent. The source position and the aperture angle are

can also be adjusted in the GUI. I think it can used for education

or simply for fun. A quick introduction to the software can be found

in the file groREADME. Feed Back and bug reports are welcome ...

It can be downloaded from my web page on Geometric Optics .

http://www-rocq.inria.fr/~benamou/gopage.html

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

From: Sergei Gololobov <gololobo@sci.kun.nl>

Date: Wed, 29 Sep 1999 13:51:37 +0200

**Subject: Seminar Days at Catholic University of Nijmegen**

SEMINAR DAYS AT CATHOLIC UNIVERSITY OF NIJMEGEN ( THE NETHERLANDS )

ON NUMERICAL METHODS.

Supported by the Copernicus KIT project "High performance computing

in Geosciences" and by the INTAS-RFBR 95-0098 project "Development of

high performance numerical methods for solving stiff multiparameter

boundary value problems".

Tuesday 19.10.99

O.Axelsson, (title to be given later)

A.Padiy, On the two-level Newton method

J.Karotson, On the gradient method in Sobolev space for

quasilinear elliptic problems

S.Margenov, On nonlinear problems arising in soil mechanics

B.Polman, The augmented matrix preconditioning method

for ill-conditioned matrices

E. van Veenendaal, Numerical simulation of solution

crystal growth and solute diffusion

R.Huiskes, Computer simulation of bone remodeling

Wednesday 20.10.99

R.Blaheta, Variable displacement decomposition preconditioning

R.Kohut, Local refinement algorithms -- performance aspects

B. van Rietbergen, Computational strategies for iterative

solutions of very large FEM applications

employing voxel data: application to

trabecular bone

I.Kaporin, Minimum residual and adaptive refinement FE methods

for first order reformulations of PDE's.

M.Nikolova, On adaptive refinement methods for convection-diffusion

problems

L.Vijfvinkel, Error indicators for adaptive refinement:

comparison between a residual-based and a

multiplier-based estimator

M.Larin, An optimal multilevel method for computing the

smallest eigenpair

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

From: Issam Moghrabi <imoghrbi@lau.edu.lb>

Date: Thu, 30 Sep 1999 08:07:24 +0200

**Subject: Conference in Lebanon on Research Trends in Science and Technology**

CALL FOR PAPERS

International Conference on Research Trends in Science and

Technology

RTST 2000

LEBANESE AMERICAN UNIVERSITY

Beirut and Byblos, Lebanon

March 6 to 8, 2000

PURPOSE

This conference is a forum for scientists and engineers to

present their research, ideas, developments and applications in

basic sciences and engineering. It will be held at the Lebanese

American University on two campuses (Beirut and Byblos) during

the year in which LAU celebrates its seventy fifth anniversary.

The organization of the conference by LAU is a tribute to science

and technology and an outlook on the future of LAU in the third

millennium.

TOPICS

Chemical Synthesis

Molecular Recognition

Quantum Mechanics

Computational Mechanics

Material Science

Optimization

Modeling and Simulation

Signal and Image Processing

Smart Engineering

Applied Symbolic Programming

Numerical Methods

ORGANIZING COMMITTEE

A. Kabbani (Chair)

R. Ghajar (Co-Chair)

I. Moghrabi (Secretary)

M. Hamdan

M. Tabbara

A.N. Kassar

CORRESPONDENCE

All correspondence should be sent to:

Dr. Issam Moghrabi

Natural Science Division

Lebanese American University

P.O. Box 13-5053

Beirut, Lebanon

imoghrbi@lau.edu.lb

LAU WEB SITE

www.lau.edu.lb

KEYNOTE SPEAKERS

Professor Pulickel Ajayan, Rensselaer Polytechnic Institute, USA

Professor Dennis Brewer, University of Arkansas, USA

Professor George Newkome, University of South Florida, USA

Professor James Sorem, University of Tulsa, USA

Professor Frank Wazzan, University of California - LA, USA

IMPORTANT DATES

Submission of manuscripts: December 31, 1999

Notification of acceptance: January 31, 2000

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

From: Arieh Iserles <A.Iserles@damtp.cam.ac.uk>

Date: Thu, 30 Sep 99 15:40:08 BST

**Subject: Durham Symposium on Geometric Integration**

LMS DURHAM SYMPOSIUM on "Geometric integration"

13th - 23rd July 2000 University of Durham, Durham, UK.

London Mathematical Society will be hosting a ten-day symposium on

geometric integration this summer at the University of Durham. The

main themes are

1.Discretization of differential equations in Lie groups and

homogeneous manifolds;

2.Recovery of Lie symmetries under discretization and applications to

partial differential equations

3.Computation of Lie symmetries by means of symbolic analysis

algorithms;

4.Asymptotics of solutions of partial differential equations;

5.Numerical methods and testing computer codes;

6.Symplectic and multisymplectic methods for Hamiltonian differential

equations.

The format will consist of instructional lectures in the mornings by

experts and talks during the afternoons, with plenty of time reserved

for interaction, collaboration and self-study.

Members of the organising committee are Chris Budd (Bath), Peter

Clarkson (Kent), Des Higham (Strathclyde), Arieh Iserles (Cambridge),

Benedict Leimkuhler (Leicester), Elizabeth Mansfield (Kent), Sebastian

Reich (Surrey) and Ian Roulstone (Met Office). A (fairly incomplete)

home page of the symposium, with more detail about scientific contents

and a tentative list of participants, can be found at

http://www.ukc.ac.uk/ims/DURHAM2000/

Participation in a Durham Symposium is mainly by invitation, but we

are willing to consider a small number of applicants. Please email your

application with supporting material to ai@damtp.cam.ac.uk before 15th

October.

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

From: Max Gunzburger <gunzburg@iastate.edu>

Date: Mon, 27 Sep 1999 16:00:25 -0500

**Subject: Faculty Positions at Iowa State University**

IOWA STATE UNIVERSITY

Department of Mathematics

The department seeks applicants, pending funding, for

several tenure track positions to begin in August, 2000.

The positions are expected to be at the assistant professor

level, but exceptional applicants for a higher rank may be

considered. An excellent record in research and teaching is

required, and experience beyond the Ph.D. is desirable.

The positions are targeted on the following areas.

Computational molecular biology/bioinformatics

Numerical analysis and scientific computing

Discrete mathematics

Applied mathematics

In all cases, we are interested in hiring mathematicians

whose research programs are complementary to the existing

strengths in the department and who can interact with

current faculty in the department as well as with the

faculty in other units of the university. Details about

each position may be found at the web site

http://www.math.iastate.edu/jobs.html

An applicant must indicate which position(s) they are

applying for and submit a vita and a brief statement

describing their research accomplishments and plans. They

must also arrange for the submission of four letters of

recommendation, one of which must address the applicant's

teaching ability and experience. Applicants for junior

positions should also submit their graduate transcripts.

All application materials should be sent to: Max Gunzburger,

Department of Mathematics, Iowa State University, Ames IA

50011-2064. Applicants whose completed applications are

received by December 15, 1999 are assured of receiving full

consideration.

Iowa State University strongly encourages women and

members of underepresented groups to apply.

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

From: Gilles Villard <Gilles.Villard@imag.fr>

Date: Wed, 29 Sep 1999 17:34:09 +0200

**Subject: Faculty Position at UJF / IMAG Grenoble **

L'Universit=E9 Joseph Fourier and the computer algebra group

within the laboratory LMC-IMAG in Grenoble France,

have an opening for a full professor position starting at

fall 2000. Outstanding scientists who have an interest in the

topics listed below in the detailed description of the position,

are invited to apply.

The candidate must be "qualifi=E9" by the french CNU (National

Council of the Universities), the deadline to apply to this

qualification is nov 10, 1999.

Title: Computer algebra (software, algorithmic and applications)

Sections: 26/27 (Applied Mathematics & Computer Science)

The candidate must have done and supervised a large part of his

research in the domain of computer algebra: software and computer

algebra systems, algorithmic, applications of computer algebra.

He must also have knowledges either in computer science (languages

and software in computer algebra, theoretical computer science),

either in modelling (automatic, geometry, ..., numerical analysis,

differential and/or partial differential equations).

The candidate will belong to the computer algebra group of

the LMC-IMAG laboratory. He will participate to the development of

current projects (differential and differential algebraic equations,

linear algebra and software development) and to the opening of

the team towards domains of modelling at the interface between

computer science, applied mathematics and applied topics such as

automatic or geometry.

With his knowledges, the candidate will be able to manage the

different aspects of computer algebra teachings. More generally,

he must be able to answer to the basic mathematics or computer

science teaching needs.

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

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

Date: Thu, 30 Sep 1999 19:33:59 -0400 (EDT)

**Subject: Faculty Position at University of Florida**

The University of Florida Mathematics Department invites applications

for a tenure track assistant professor position in Applied Mathematics/PDE.

Priority is given to candidates who can interact with existing groups

in the department. Appointments commence in August 2000. Applicants

must show strong research promise and are expected to excel in teaching

as well. Applicants should forward curriculum vitae and a list of publications

to:

Chair of Search Committee

Department of Mathematics

358 Little Hall

University of Florida

Gainesville, FL 32611 - 8105

Applicants should ask referees to send three letters of recommendation

directly to the address above. Completed applications are due by December

13, 1999.

The Department welcomes applications from women and minority candidates.

The University of Florida is an EEO/AA institution. Anyone requiring

special assistance in completing the application should contact the search

committee chairperson.

For more information about the department, see http://www.math.ufl.edu.

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

From: Stu Naegele <Stu.Naegele@colorado.edu>

Date: Mon, 27 Sep 1999 10:10:37 -0600

**Subject: Postdoctoral Position at CU Boulder**

UNIVERSITY OF COLORADO AT BOULDER

DEPARTMENT OF APPLIED MATHEMATICS

POSTDOCTORAL FELLOWSHIPS

Applications are invited for two postdoctoral fellowships to begin either

Spring or Fall 2000. The fellowships are part of a National Science

Foundation grant the Department has been awarded for Vertical Integration

of Research and Education (VIGRE) in applied mathematics. This award will

support three-year appointments for four postdoctoral fellows. The fellows

will join a "tetrahedral" multi-level research group-composed of faculty,

postdoctoral fellows, graduate trainees and undergraduates-in one of the

following areas (faculty are listed in parentheses):

Multilevel computation (T. Manteuffel, S. McCormick)

Fast algorithms (G. Beylkin, B. Fornberg, K. Julien)

An innovative attribute of this grant is the dual participation in research

and teaching. Each fellow will also be involved in teaching and learning

programs in the Department and is expected to teach one course per

semester. Fellowships are available only to U.S. citizens or permanent

residents. The University of Colorado at Boulder is committed to diversity

and equality in education and employment.

Further information can be found on the Department's web page:

http://amath.colorado.edu/appm/

Applicants should send a letter of application, a current curriculum vitae,

a statement of research interests, an AMS Standard Cover Sheet (see

http://www.ams.org/employment/cover-template.doc) and three letters of

recommendation (sent directly) to:

Chair

Postdoctoral Fellow Search

Department of Applied Mathematics

Campus Box 526

University of Colorado

Boulder, CO 80309

Review of applications will begin December 1, 1999 and will continue until

the positions are filled.

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

From: George Anastassiou <ANASTASG@msci.memphis.edu>

Date: Wed, 29 Sep 1999 14:19:47 -600

**Subject: Contents, Journal of Computational Analysis and Applications**

JOURNAL OF COMPUTATIONAL ANALYSIS AND APPLICATIONS

Table of Contents JoCAAA Vol.1,No.2,April 1999

1)A Learning Algorithm for the Control of Continuous Action Set-Point

Regulator Systems,A.O.Esogbue and W.E.Hearnes,II,121

2)A General Sampling Theorem Associated with Differential Operators,

A.G.Garcia and M.A.Hernandez-Medina,147

3)Fundamental Solutions of Linear Differential Equations in the Sense

of Mnemofunctions,N.Y.Radyno and V.G.Papanicolaou,163

4)Univariate Geometric Stable Laws,T.J.Kozubowski and S.T.Rachev,177

5)Fast Iterative Methods for Solving of Boundary Nonlinear Integral

Equations with Singularity,D.Rostami Varnos Fadrani and

K.Maleknejad,219.

Table of Contents JoCAAA Vol.1,No.3,July 1999

1)Dedication to Professor P.L.Butzer,235

2)Introduction,G.A.Anastassiou,237

3)Simultaneous Polynomial Approximation in the Weighted Chebyshev

Norm,T.Kilgore and M.Tasche,239

4)Interpolation on Sparse Grids and Tensor Products of Nikol'skij-

Besov Spaces,W.Sickel and F.Sprengel,263

5)General Theory of Global Smoothness Preservation by Singular

Integrals,Univariate Case,G.A.Anastassiou and S.G.Gal,289.

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

End of NA Digest

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