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

- Geometric Intersection Problem
- Strong Discontinuities
- Errata, Parallel Optimization by Censor and Zenios.
- New Book, Generalized Riccati Theory and Robust Control
- Conference on Environmental Mathematical Modeling
- Nanjing Conference on Optimization and Numerical Algebra
- Parallel CFD Conference
- BLAS Technical Forum
- SPEEDUP Workshop
- Software Quality Position at Sun Microsystems
- Pre- and Postdoctoral Positions at University of Wisconsin
- Research Fellow at University of Melbourne
- Graduate Student Positions at Albert Ludwig University
- Research Position at University of Auckland
- Scientific Computing Position at University of Michigan
- Contents, Linear Algebra and Its Applications

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

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

From: Bruce Hendrickson <bahendr@trocious.cs.sandia.gov>

Date: Wed, 10 Feb 99 15:12:37 MST

**Subject: Geometric Intersection Problem**

While working on the coupling of Lagrangian and Eulerian codes,

I have come across the following simple geometric problem.

This kernel is consuming a significant amount of time for the

large problems of interest. I would be interested to hear

from others who may have addressed the same problem or anyone

who has a suggestion for an efficient approach.

Given:

A tetrahedron and a rectilinear 3D grid.

Find:

The volume of intersection of the tet with each grid cell.

I'm aware that the general problem of intersecting convex polyhedra

is well studied. I'm looking for an approach that is fast in practice

for this special instance.

- Bruce

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

From: Daoqi Yang <yang@math.wayne.edu>

Date: Thu, 11 Feb 1999 09:31:35 -0500 (EST)

**Subject: Strong Discontinuities**

Dear NA Netters:

I have some questions for people who are dealing with

problems with strongly discontinuous coefficients.

My implementation of finite element methods show that

the solution gets less accurate when the coefficients

become more discontinuous. When the jump in discontinuity

increases from 10 to 10^{5} (10 to the power of 5), the

accuracy decreases from 10^{-3} to about 1. My first

question is that anyone has implemented FEM (or FDM, FVM etc)

carefully such that the accuracy does not deteriorate

even if the jump is 10^{50} or 10^{100}?

I recently implemented FEM with Domain Decomposition and found

that certain domain decomposition methods do not lose accuracy

when the jump increases from 10 to 10^{100} and the conditioning

of the discrete problem gets much better when the jump

becomes large. For example, when the jump is 10^{100}, one iteration

will be enough to get accuracy of order 10^{-3}.

My second question is that anyone has had similar observations?

My third question is that anyone has had encountered real world

problems or know some references that have coefficient

jumps in the order 10^{10}, 10^{50} or 10^{100}?

Thanks. I appreciate your suggestions and references.

Daoqi Yang

yang@math.wayne.edu

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

From: Yair Censor <yair@mathcs2.haifa.ac.il>

Date: Fri, 12 Feb 1999 11:21:41 +0200 (IST)

**Subject: Errata, Parallel Optimization by Censor and Zenios.**

Errare humanum est...

We proudly announce that our tireless efforts to publish the "first ever

published book without errors" have failed....

For the benefit of the readers of our book (see full publication details

below) we installed an Errata list at the following internet site:

http://www.ucy.ac.cy/ucy/pba/zenios/bookinfo.html

We would be grateful to anyone bringing to our attention further errors,

typos, or omissions of credits and references. We will gladly post those

on the page.

Yair Censor and Stavros Zenios

P.S. If you wish a .ps file of the Errata list e-mailed to you please send

a request to: yair@mathcs2.haifa.ac.il

PARALLEL OPTIMIZATION : THEORY, ALGORITHMS, AND APPLICATIONS

By Yair Censor and Stavros A. Zenios,

A volume in the series: "Numerical Mathematics and Scientific Computation",

Oxford University Press, New York, 1997.

Hardcover, 576 pages, ISBN 0-19-510062-X.

For information on the book, including Title Page, Foreword, Preface,

Organization of the Book, Suggested Course Outlines, Acknowledgements,

and Ordering Instructions, please visit the publisher on the internet at

http://www.oup-usa.org/gcdocs/gc_019510062X.html

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

From: Cristian Oara ER <oara@df.op.dlr.de>

Date: Tue, 09 Feb 1999 12:30:22 +0100

**Subject: New Book, Generalized Riccati Theory and Robust Control**

NEW BOOK ANNOUNCEMENT

GENERALIZED RICCATI THEORY AND ROBUST CONTROL

A Popov Function Approach

by

Vlad IONESCU, Cristian OARA, Martin WEISS

(410 pages, hard-cover, ISBN: 0-471-97147-2, 60,- GBP)

published by

John Wiley and Sons

1999

FROM THE BACKCOVER:

This comprehensive monograph is unique in providing a generalization

of the algebraic Riccati theory to the indefinite sign and singular

cases from the perspective of the Popov function approach. The whole

development is oriented towards applications in robust systems theory.

MAIN FEATURES:

** All the results are treated in parallel, in continuous and discrete-time

settings, and at the same level of generality and in-depth details

** Necessary and sufficient existence conditions and computable formulas

for Riccati equations and systems under the most general assumptions available

so far in the literature

** Characterizations of the solutions to the Riccati equation by using various

representations of the underlying Hamiltonian system: time domain (input-output

operator), frequency domain (transfer function matrix), and state-space

(transmission matrix pencil)

** Extension of the celebrated Popov positivity theory to the game theoretic

cases

** Unified solutions and extensions of bounded real lemma, small gain theorem,

normalized coprime factorization, spectral and inner-outer factorization,

Redheffer theorem, linear quadratic control

** A signature condition based approach which unifies the solutions to various

mathematical problems from robust control theory, including the maxmin, Nehari,

H-2 and H-infinity control, and robust stabilization problems

** The most general formulas available so far for the suboptimal H-infinity

controller (continuous and discrete-time)

** Optimal solutions to the robust stabilization problems under normalized

coprime factors uncertainties

** Particular attention paid to the peculiarities of discrete-time systems

such as to eliminate the unnatural restrictive assumptions which are usually

present in the literature and which rule out the ``interesting'' cases

** Self-contained monograph, giving all necessary basic results used in the

book

Graduate students in control engineering and those working on the

mathematics of system and control theory will find this book essential

reading. For researchers, this is an indispensable work, when seeking

ever more robust control laws which take into account uncertainties.

CONTENTS:

Preface

Part I. General Matrix Theory and Linear Dynamical Systems

Chapter 1. Matrices, Matrix Pencils, and Rational Matrix Functions.

Chapter 2. Linear Dynamical Systems.

Part II Generalized Riccati Theory

Chapter 3. Popov Triplets.

Chapter 4. Riccati Theory: An Operator--based Approach.

Chapter 5. Riccati Equations and Matrix Pencils: the Regular Case.

Chapter 6. Riccati Systems and Matrix Pencils: the General Case.

Part III Applications to Systems Theory and Robust Control

Chapter 7. Applications to Systems Theory.

Chapter 8. The Four Block Nehari Problem.

Chapter 9. The Optimal H-2 Control Problem.

Chapter 10. The H-Infinity Control Problem

Chapter 11. Robust Stabilization.

References

Index

ORDERING INFORMATION:

Internet: http://www.wiley.com/ordering

http://catalog.wiley.com

Email: customer@wiley.co.uk

Fax: + 44 (0) 1243 770460

Phone: 0800 243407 (UK Free Phone)/

+ 44 1243 843206 (Other countries)

Post: Sarah Hinton, John Wiley and Sons Ltd, Baffins Lane,

Chichester, West Sussex, PO19 1UD, UK

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

From: Lev Krukier <krukier@npt.rnd.runnet.ru>

Date: Mon, 8 Feb 1999 18:06:26 +0300

**Subject: Conference on Environmental Mathematical Modeling**

SECOND ANNOUNCEMENT and CALL for PAPERS

International Conference on

Environmental Mathematical Modeling

and Numerical Analysis

(EMMNA'99)

May 24 - 31, 1999, Rostov-on-Don, RUSSIA

Institute for Mathematical Modeling, Russian Academy of Science and Rostov

State University are organizing International Conference on Environmental

Mathematical Modeling and Numerical Analysis (EMMNA'99)

The scope of the Conference includes but is not limited to the following

topics:

1. Mathematical modeling of hydrophysical processes in a water basin and

transport of contaminants

2. Groundwater pollution

3. Mathematical modeling of hydrophysical processes in air and air pollution

4. Numerical methods for advection-diffusion equation

5. Numerical methods for the solution of unsteady PDE problems

6. Iterative methods and preconditioners in environmental modeling

7. Efficient time stepping for stiff ODEs in environmental modeling

8. High performance computing in environmental modeling

Chairman: A.A. Samarskii (Russia)

INVITED SPEAKERS (confirmed): Richard Ewing, USA ; A. Hasanov, Turkey ;

A.N. Konovalov, Russia; V.V. Penenko, Russia; V.V. Shaidurov, Russia; A.

Sydow, Germany; P.N. Vabishchevich, Russia; I.I. Vorovich, Russia;

Junping Wang, USA; Ruediger Weiss, Germany; Z. Zlatev, Denmark.

Deadlines:

Submission of abstracts: March 15, 1999

Notification of acceptance of abstracts: March 30, 1999

Notification of acceptance of papers: June 30, 1999

Registration and submission of accommodation forms: May 1, 1999

For further information contact us by e-mail : emmna99@uic.rnd.runnet.ru

or check our WWW-page: http://www.uic.rnd.runnet.ru/emmna99/

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

From: Wenyu Sun <wysun@pine.njnu.edu.cn>

Date: Tue, 9 Feb 1999 11:42:17 +0800

**Subject: Nanjing Conference on Optimization and Numerical Algebra**

International Conference on Optimization and Numerical Algebra

Nanjing Normal University, Nanjing, China

September 27-30, 1999

FIRST ANNOUNCEMENT

Nanjing is a big, beautiful and historical city with about thirty universities

and colleages. The International Conference aims to review and discuss recent

advances and promising research trends in some areas of Optimization and Nume-

rical Algebra. The topics include: Linear Programming and Nonlinear Program-

ming, Convex Programming and Nonconvex Programming, Nonsmooth Optimization,

Global Optimization, Stochastic Programming, Multiobjective Optimization,

Variational Inequalities, Linear and Nonlinear Systems of Equations, Least-

Squares Problems, Computation of Eigenvalue Problems, Matrix Computation and

Generalized Inverses, Applications of Optimization and Numerical Algebra.

Invited speakers include:

O. Axelsson (Nijmegen University, The Netherlands)

J.R. Birge (University of Michigan, USA)

T.F. Coleman (Cornell University, USA)

D.Y. Cai (Tsinghua University, Beijing)

S.C. Fang (North Carolina State University, USA)

M. Ferris (University of Wisconsin, USA)

M. Fukushima (Kyoto University, Japan)

W. Gander (ETH, Switzerland)

J.Y. Han (Chinese Academy of Sciences, Beijing)

E.X. Jiang (Fudan University, Shanghai, Shanghai)

P. Kall (University of Zurich, Switzerland)

W.W. Lin (National Tsinghua University, Taiwan)

W. Niethammer (Karlsruhe University, Germany)

L. Qi (University of New South Wales, Australia)

D. Ralph (University of Melbourne, Australia)

Z. Shen (Nanjing University, Nanjing)

E. Spedicato (University of Bergamo, Italy)

J. Sun (National University of Singapore, Singapore)

J.G. Sun (University of Umea, Sweden)

K. Tanabe (The Institute of Statistical Mathematics, Japan)

Ph.L. Toint (University of Namur, Belgium)

K.L. Teo (The Hong Kong Polytechnic University, Hong Kong)

J.-Ph. Vial (University of Geneva, Switzerland)

A.J. Wathen (Oxford University, UK)

T. Yamamoto (Ehime University, Japan)

Y. Yuan (Chinese Academy of Sciences, Beijing)

J. Zhang (City University of Hong Kong, Hong Kong)

X. Zhang (Chinese Academy of Sciences, Beijing)

Y. Zhang (Rice University, USA)

CALL FOR PAPERS: Titles and abstracts of invited and contributed papers must

be received by July 10, 1999. The abstracts should be typed in Latex, not ex-

ceed one page, and be sent to niqfs@dns.nuaa.edu.cn or wysun@pine.njnu.edu.cn

by e-mail. There is also 1999 Nanjing Award in Optimization and Numerical

Algebra for Young Researcher.

Conference proceedings, special issues of some journals, tours and

accommodations arrangements will be indicated in the Second Announcement.

Further information can be checked in WWW websites of

http://www.cc.ac.cn, http://www.njnu.edu.cn, http://www.nuaa.edu.cn,

http://www.pax.st.usm.edu/~jding/meeting.html or be obtained by contacting conference organizers:

Z.Bai (Chinese Academy of Sciences, bzz@lsec.cc.ac.cn),

L.Qi (University of New South Wales, Sydney, l.qi@unsw.edu.au),

W.Sun (Nanjing Normal University, wysun@pine.njnu.edu.cn).

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

From: David Keyes <keyes@icase.edu>

Date: Tue, 9 Feb 1999 16:58:26 -0500 (EST)

**Subject: Parallel CFD Conference**

Second Announcement

PARALLEL CFD'99

May 23-26, 1999

Williamsburg, Virginia, USA

http://www.parcfd.org

Parallel CFD'99, the eleventh in an international series of meetings

featuring computational fluid dynamics research on parallel computers,

will be held May 23-26, 1999 in Williamsburg, Virginia.

The technical program features invited speakers, three tracks of

contributed presentations, a poster session, and will be preceded for the

convenience of conferees by an optional half-day tutorial introducing the

PETSc parallel software system, including case studies from fluid

dynamics. Early experiences on teraflops-class ASCI computers and a

report on the ASCI alliance program will also be featured at the meeting.

All realms of phenomena in which fluid dynamical simulations play a

critical role --- from the microscopic scales of high tech manufacturing,

through human and planetary scales, and even to galactic scales --- and

all types of parallel models and architectures are featured. However, it

is the intersection of CFD and parallelism that is of interest, not the

union. Contributions generally focus on implementations and results.

Novel tools and methods supporting the software/hardware environment of

parallel CFD are also of interest.

Special emphases of the 1999 meeting will be parallel methods in

optimization, validation of parallel codes, non-PDE-based formulations of

CFD, and the influence of deep memory hierarchies and high interprocessor

latencies on the design of algorithms and data structures for CFD

applications. Abstracts targeting these themes are especially welcome.

The following international experts from industry, government, and

academia have agreed to make plenary presentations at the conference:

Antoine Desideri, INRIA, France

Harald Echtle, Daimler-Chrysler, Germany

Paul Fischer, Argonne National Lab, USA

Marc Garbey, University of Lyon, France

Trond Kvamsdahl, SINTEF, Norway

Dimitri Mavriplis, ICASE, USA

Kevin McManus, University of Greenwich, UK

John Salmon, California Institute of Technology, USA

John Shadid, Sandia National Lab, Albuquerque, USA

James Taft, NASA Ames Research Center, USA

Shinichi Kawai, National Space Development, Japan

The deadline for contributed abstracts has been extended to February 16,

1999. Authors will be notified of acceptance on or about March 12, 1999.

A refereed conference proceedings will be published by North Holland and

selected papers will appear in a special issue of the Int. J. of CFD.

The early registration deadline is April 15, 1999. For details on

conference venue, abstract preparation and submission, and registration,

please see the conference website, www.parcfd.org.

Local Organizing Committee of Parallel CFD'99:

D. E. Keyes, Old Dominion University and ICASE (Chair)

M. D. Salas, ICASE E. N. Todd, ICASE

V. N. Vatsa, NASA Langley R. G. Voigt, College of William & Mary

Scientific and Organizing Committee of the Parallel CFD Conferences:

R. K. Agarwal, Wichita State U. B. Chetveruskin, Russian Acad. Sci.

A. Ecer, UIPUI D. R Emerson, CLRC

P. Fox, IUPUI M. Garbey, U. of Lyon

A. Geiger, RUS C. Jenssen, SINTEF

D. Keyes, Old Dominion U. C. A. Lin, Tsing-Hua U.

I. Lopez, NASA Lewis D. McCarthy, Boeing

J. McDonough, U. of Kentucky R. Pelz, Rutgers

J. Periaux, Dassault Aviation N. Satofuka, Kyoto Inst. of Tech.

P. Schiano, CIRA A. Sugavanam, IBM

M. E. S. Vogels, NLR D. Weaver, Phillips Laboratory

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

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

Date: Thu, 11 Feb 1999 11:40:23 -0500

**Subject: BLAS Technical Forum**

BLAS TECHNICAL FORUM, March 16-18, 1998, Oak Ridge, TN

We are planning a BLAS Technical Forum meeting on March 16-18, 1999.

The meeting will be hosted by the University of Tennessee and will be

held at the Ramada Inn & Suites in Oak Ridge, TN:

Ramada Inn & Suites

420 S. Illinois Avenue

Oak Ridge, TN 37830

(423) 483-4371

The Forum has been established to consider expanding the Basic Linear

Algebra Subprograms (BLAS) in a number of directions in the light of

modern software, language, and hardware developments. The first meeting

of the Forum was held in Nashville on February 19-20, 1996.

We strongly urge and encourage attendance at the meeting

so that we can make tangible progress towards much needed standards.

Wide input is needed to help ensure that emerging proposals are useful

and acceptable to the community.

It is appreciated that it is not easy for everyone to attend the

meetings of the Forum, but we would nevertheless welcome your input

since we wish the discussion to be as open as possible, and the results

to reflect consensus from the community at large.

The tentative schedule for the meeting will be:

9am-5pm: Tues, March 16

9am-5pm: Wed, March 17

9am-1pm: Thurs, March 18

Morning and afternoon snacks will be provided, but you're on-your-own

for lunches.

A rough agenda for the meeting follows:

* Second/third reading of the following chapters:

Chapter 1: Introduction

Chapter 2: Dense and Banded BLAS

Chapter 3: Sparse BLAS

Chapter 4: Extended and Mixed Precision BLAS

Chapter 5: Interval BLAS

* Discussion of model implementations and test suites.

Please send us items you would like to see on the agenda

or that you would like to discuss.

For more information see:

http://www.netlib.org/blas/blast-forum/blast-forum.html

Jack Dongarra and Sven Hammarling

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

From: Karsten Decker <decker@cscs.ch>

Date: Sun, 14 Feb 1999 08:07:40 +0100

**Subject: SPEEDUP Workshop**

SECOND ANNOUNCEMENT AND PRELIMINARY PROGRAM

25th SPEEDUP Workshop

Trends in High-Performance Computing:

Systems, Services, and User Requirements

Hotel Cadro Panoramica

Cadro-Lugano

Switzerland

March 25 - 26, 1999

Summary

High-performance computing (HPC) has become an important tool in science

and engineering. Over the last ten years new methods, new hardware, and

new software have stretched the bounds of what can be done. However,

the development did not always follow straight lines. What can we

expect in the near future and how should we direct our efforts?

This workshop will address the current trends in HPC systems, but also

raise the question whether these trends are going to persist in the

future. Will there be new types of computer systems emerging? What

about HPC center services? Which products and services should be

offered to respond to end-user requirements?

The 25th SPEEDUP Workshop is intended to bring together members of

academic institutions, business enterprises, and government who are

interested to learn about trends in hardware architecture, software

infrastructure, libraries and tools, HPC center products and services,

user requirements, and performance evaluation.

Topics

Topics will include, but will not be limited to the discussion of trends in

Hardware architecture

Software infrastructure

Libraries and tools

Products and services

End-user requirements

Preliminary program

M.H. Gutknecht, ETH Zurich

W.J. Camp, Sandia National Laboratory, Albuquerque, USA

R.C. Whaley, University of Tennessee, Knoxville, USA

J. Towns, National Computational Science Alliance, USA

E. Benz, ABB Corporate Research, Baden, Switzerland

W. Schmidt, DaimlerChrysler AG, Stuttgart, Germany

A. Geiger, RUS, Stuttgart, Germany

U. Harms, Harms Supercomputing Consulting, Munich, Germany

K.M. Decker, President SPEEDUP Society, CSCS

R. Gruber, EPF Lausanne, Lausanne, Switzerland

A. Gunzinger, ETH Zurich, Zurich, Switzerland

P. Kuonen, EPF Lausanne, Lausanne, Switzerland

H.-P. Wessels, CSCS, Manno, Switzerland

General information and registration

The latest information on the program can be found at URL

http://www.speedup.ch/Workshops/Workshop25Ann.html

On-line registration is available at URL

http://davos.cscs.ch:8080/Workshop25Reg.html.

Since the number of participants is limited, we urge you to register

promptly to ensure that a space is reserved in your name. In any case,

please register until March 15, 1998 at the latest.

Further information on the SPEEDUP Society can be obtained from URL

http://www.speedup.ch

Contact address

Martin H. Gutknecht

General Workshop Chair

ETH Zentrum, RZ

CH-8092 Zurich

Tel: +41 (1) 632 3464

Fax: +41 (1) 632 1104

Email: mhg@scsc.ethz.ch

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

From: Mike Boucher <Mike.Boucher@Central.Sun.COM>

Date: Fri, 12 Feb 1999 08:51:35 -0700 (MST)

**Subject: Software Quality Position at Sun Microsystems**

The High Performance Libraries and Tools Group (HPG) at Sun is looking

for a numerical analyst or applied mathematician to fill an opening for

a Software Quality Engineer (SQE). The SQE's responsibilities are to:

o Develop tests of parallel numerical libraries for the SPARC and

x86 platforms

o Interact with developers to ensure that software is developed

in a way that facilitates testability and verifiability

o Prove (or disprove) the validity of proposed new algorithms and

optimizations to existing algorithms

o Help developers analyze test failures

Experience with LAPACK is a plus, and candidates with software testing

experience are preferred.

The SQE will be an integral part of every phase of the product life cycle

by participating in initial design reviews, proposing changes to aid

testability and verifiability, validating the libraries on new hardware

and software configurations, and participating in acceptance and shipping

decisions on the final product.

Please send a resume for prompt consideration to Diane.Boucher@Sun.com

or mail to:

Diane Boucher

Manager, HPG

303B South Technology Court

UBRM11-202

Broomfield, Colorado 80021

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

From: Richard Brualdi <brualdi@math.wisc.edu>

Date: Fri, 12 Feb 1999 13:07:57 -0600 (CST)

**Subject: Pre- and Postdoctoral Positions at University of Wisconsin**

VIGRE

Vertical Integration of Research and Education at

The University of Wisconsin - Madison

The Department of Mathematics at the University of

Wisconsin-Madison anticipates receiving a VIGRE award from

the National Science Foundation. Such an award would

provide support for

(1) up to thirteen new predoctoral fellowships, and

(2) up to three new postdoctoral fellowships.

These new fellowships are restricted to U.S. citizens and

permanent residents. It is expected that postdoctoral

fellowship recipients will have received their PhD since

1997. Additional awards are anticipated in future years.

The predoctoral fellowships are intended for graduate students

in the graduate program in Mathematics and in Applied

Mathematical Sciences, and are expected to provide two years of

fellowship support (including two years of summer support) and

three years of teaching assistantship support, contingent on

satisfactory progress. Full tuition remission and health

insurance is included.

The postdoctoral fellowships are three year fellowships,

including both academic year and summer support. The

teaching load is one course per semester, with no summer

teaching. Postdoctoral fellows will be mentored by a

faculty member and will participate in a variety of

instructional and research activities involving

undergraduate students, graduate students, and faculty.

Supplementary money is available each year for travel,

equipment, and supplies. Qualified applicants who have

already applied this year for a Van Vleck (Visiting)

Assistant Professorship or other position will

automatically be considered for a "VIGRE Van Vleck."

Applicants who have not already applied for a "Van Vleck"

should send an AMS Application Cover Sheet and a CV, and

have at least three letters of recommendation sent to:

Hiring Committee (VIGRE)

Department of Mathematics

480 Lincoln Drive

University of Wisconsin

Madison, WI 53706-1388.

Applications will continue to be considered until all

positions are filled.

Areas of focus for "VIGRE Van Vlecks" are:

Discrete Mathematics: cryptography, codes, combinatorial

analysis and probability, splines, wavelets, and related

areas;

Physical Applied Mathematics: continuum and statistical

mechanics, rheological flows, turbulence, and related

areas;

Dynamical Systems and Partial Differential Equations:

variational methods for ODE and PDE, hyperbolic systems of

conservation laws, viscosity methods for degenerate

parabolic PDEs, and related areas;

Stochastic Analysis: stochastic equations, mathematics of

finance, probability theory, and related areas.

The University of Wisconsin is an Affirmative Action, Equal

Opportunity Employer, and encourages applications from

women and minorities. Unless confidentiality is requested

in writing, information regarding the applicant must be

released upon request. Finalists cannot be guaranteed

confidentiality.

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

From: Kerry Anne Landman <k.landman@ms.unimelb.edu.au>

Date: Sat, 13 Feb 1999 11:57:31 +1000

**Subject: Research Fellow at University of Melbourne**

University of Melbourne Department of Mathematics and Statistics

Research Fellow

Industrial Applied Mathematics

The position: A research position is available to work on the ARC

industry partner grant on mathematical modelling of the cooking process of

cereal grains. This is a focussed collaborative project which requires

research outcomes to be achieved according to a research plan.

The person: You should have a PhD in applied mathematics, physics,

chemical engineering, mechanical engineering or their equivalent. You

will have a high level of mathematical modelling skills, with an ability

to understand physical processes and translate these into a mathematical

model. You will have a high level of analytic and numerical computing

skills. Good written and oral skills are essential, as well as the

ability to work in a team.

Contact: Associate Professor Kerry Landman, Telephone: 9344 6762, Fax:

9344 4599, Email: k.landman@ms.unimelb.edu.au, for further information and

a position description.

The benefits: The position has a salary of $43042 - $46203.

Employment type: The position is a fixed-term (research) position for 2 years.

Applications close: 31 March 1999

Position number: RY 0007541

Applications to: Director, Human Resources, The University of Melbourne,

Parkville, Victoria, 3052; fax +61 3 9344 4694. Quote the position number

and include the names, phone and facsimile numbers and E-mail addresses of

three referees in your application.

The University of Melbourne is an equal opportunity employer.

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

From: Jan Korvink <korvink@informatik.uni-freiburg.de>

Date: Tue, 09 Feb 1999 16:11:38 +0000

**Subject: Graduate Student Positions at Albert Ludwig University**

Graduate study opportunities in

Microsystem Modelling and Simulation

at the Institute for Microsystem Technology, Faculty of Applied Science,

Albert Ludwig University Freiburg, Germany.

Aim of the project, funded by the German DFG, is the development of new

modelling tools for microsystems (MEMS). We are seeking candidates with

programming skills in C++; a background in numerical analysis would be

beneficial. A master or diploma in computational science, computer science,

or related fields is required. The positions are open for three years.

The salary is regulated by the German BAT contract: BAT IIa or less

depending on qualifications.

Applications will be accepted until the positions are filled. Interested

applicants should send a resume and a cover letter stating research

interests as soon as possible to

Prof. Jan G. Korvink

Chair for Microsystem Simulation

IMTEK - Institute for Microsystem Technology

University of Freiburg

Am Flughafen 17

D-79110 Freiburg Tel. (+49 761) 203 8040

Germany Fax. (+49 761) 203 8042

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

From: Margot Gerritsen <m.gerritsen@auckland.ac.nz>

Date: Wed, 10 Feb 1999 15:19:36 +1300

**Subject: Research Position at University of Auckland**

PhD fellowship for TIDAL FLOW MODELLING in the Department of Engineering

Science, School of Engineering at the University of Auckland, New Zealand

Recently our research group received a Marsden Fund grant (similar to the

NSF grants in the US) to develop improved computational methods for efficient

and accurate computer modelling of tidal flows, and the associated transport

of chemicals and particles, in coastal regions. The computer model will be

used to study a wide variety of problems such

as the effects of sewage disposal, the effects of the marine dumping of

sediments and the movement of fish larvae. The model will be based on

composite grid techniques in combination with grid refinement strategies.

The project is conducted in collaboration with the National Institute

for Water and Atmospheric Research in New Zealand.

Besides Professor Mike O'Sullivan and myself, the project team consists

of two PhD students and one postgraduate student. We are looking for a third

PhD student. We offer a stipend and tuition support.

Auckland is a beautiful city surrounded by water, with a climate similar

to that of the bay area in California (although it rains a bit more),

and offers many opportunities for outdoor activities. It also has a vibrant

cultural scene.

For more information contact me at m.gerritsen@auckland.ac.nz

Margot Gerritsen

Lecturer Engineering Science

University of Auckland

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

From: Abhijit Bose <abose@engin.umich.edu>

Date: Wed, 10 Feb 1999 14:58:11 -0500

**Subject: Scientific Computing Position at University of Michigan**

The Center for Parallel Computing at the University of Michigan

is seeking to hire a person with background in scientific computing

and parallel algorithms for a user support and consulting position.

For more information on the Center, please visit our web page:

http://www.engin.umich.edu/labs/cpc .

Desired Qualifications

Ph.D. or equivalent combination of education and experience in

high-performance parallel computing, knowledge of the following:

parallel algorithms, MPI, OpenMP, PVM, AFS, Unix, SQL,

numerical and statistical libraries

Minimum Qualifications

M.S. Engineering or Computer Science or equivalent combination of

education and experience in parallel code development, algorithm

decomposition for parallelizing serial codes using MPI/PVM,

programming skills in Fortran, HPF, C, HTML; strong oral/written

skills and desire to help users; ability to teach others and work

within a team environment.

Duties

Provide scientific programming and consulting services to

Center for Parallel Computing (CPC) and University of Michigan

users; provide consulting services for national NPACI users

via email/Remedy system and occasional phone calls, create

training materials and conduct training sessions on parallel

programming using supercomputers such as IBM SP2, SGI Origin,

Cray T3E/T90; install, maintain and support application package

used on CPC supercomputers; maintain, develop and update CPC

web pages.

Resumes and questions with regard to this position can be sent to:

abose@engin.umich.edu (preferred) or via US mail:

Dr. Abhijit Bose

The University of Michigan

2356 Media Union

2281 Bonisteel Blvd.

Ann Arbor, MI 48109-2094

Phone: (734) 615-1490

Fax: (734) 936-3107

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

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

Date: Tue, 9 Feb 1999 09:07:29 -0600 (CST)

**Subject: Contents, Linear Algebra and Its Applications**

URL: http://www.elsevier.nl/locate/jnlnr/07738

Journal: Linear Algebra and Its Applications

ISSN : 0024-3795

Volume : 289

Issue : 1-3

Date : 01-Mar-1999

Seventh Special Issue on Linear Algebra and Statistics

Special Editors: S.PUNTANEN, G.P.H.STYAN, H.J.WERNER

pp 1-2

Preface

pp 3-24

Improved biased estimation in an ANOVA model

SE Ahmed

pp 25-39

Mimimax adjustment technique and fuzzy information

BF Arnold

pp 41-54

Monte Carlo estimates of the log determinant of large sparse matrices

RP Barry

pp 55-74

Linear restrictions, rank reduction, and biased estimation in linear

regression

JS Chipman

pp 75-94

Spherical functions on the Grassmann manifold and generalized Jacobi

polynominals-Part 1

AW Davis

pp 95-119

Spherical functions on the Grassmann manifold and generalized Jacobi

polynominals-Part 2

AW Davis

pp 121-126

A class of statistical estimators related to principal components

RW Farebrother

pp 127-130

Solution to a rank equation

J Gross

pp 131-134

Explicit solutions to the matrix inverse problem AX=B

J Gross

pp 135-139

Idempotency of the Hermitian part of a complex matrix

J Grob

pp 141-150

On the product of orthogonal projectors

J Grob

pp 151-160

A note on the rank-subtractivity ordering

J Gross

pp 161-168

Partial orderings, preordenings, and the polar decomposition of

matrices

J Gross

pp 169-182

On semi-orthogonality and a special class of matrices

J Gross

pp 183-201

Frechet distance as a tool for diagnosing multivariate data

ALIS Hadi, H Nyquist

pp 203-224

Use of the Gibbs sampler to invert large, possible sparse, positive

definite matrices

DA Harville

pp 225-242

Changes in the general linear model: a unified approach

SR Jammalamadaka

pp 243-259

The Marcus-de Oliveira conjecture, bilinear forms, and cones

A Kovacec

pp 261-266

A note on the parameter set for factor analysis models

WP Krijnen

pp 267-277

Matrix results on the Khatri-Rao and Tracy-Singh products

S Liu

pp 279-284

Simultaneous polar decomposition of rectangular complex matrices

A Markiewicz

pp 285-296

Softly unbiased estimation part 1: the Gauss-Markov model

B Schaffrin

pp 297-310

On oblique projectors

Y Takane

pp 311-318

Some new results on correlation-preserving factor scores prediction

methods

JMF Ten Berge

pp 319-332

The perturbed nonhomogeneous Markov systems

PCG Vassiliou

pp 333-342

Two-way selection of covariables in multivariate growth curve models

SG Wangi, T Nummi

pp 343-344

Author index to volume 289

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

End of NA Digest

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