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

- Query on Sparse Linear Least Squares Problem
- PARASOL - Parallel Sparse Matrix Solvers
- Seeking Help With High Performance Computing Workshop
- Temporary Change of Address for Volker Mehrmann
- New Book in Global Optimization
- Fourth European PVM/MPI Users' Group Meeting
- Hewlett-Packard High Performance Computing Meeting
- Conference in Honor of Olof Widlund
- SIAM Conference on Applied Linear Algebra
- Midwest Numerical Analysis Day 1997
- Numerical Modeling in Continuum Mechanics
- ATLAST Linear Algebra Workshop
- Research Position at the University of Tennessee
- Faculty Position at Manchester University
- Fellowships at Stanford University
- Faculty Positions at the University of Puerto Rico at Mayaguez
- Position at University of Duesseldorf
- Ph.D. Fellowships at University of Cincinnati
- Contents, SIAM Review
- Contents, SIAM Applied Mathematics
- Contents, Advances in Computational Mathematics

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

From: Jean Claude Berges <Jean-Claude.Berges@cnes.fr>

Date: Thu, 20 Feb 97 17:43:17 +0100

**Subject: Query on Sparse Linear Least Squares Problem**

Dear NA-Netters,

I have to solve some sparse linear least squares problems;

Min||Ax -b||

where A is a real sparse full rank matrix (m,n) , m>>n

m = 40 000

n = 800

Number of non zero / (m*n) = 0.025

I used already the LSQR algorithm of Ch.C. Paige and M.A.Saunders but,

I am looking for :

-> direct algorithms/ freeware codes like QR factorization,

-> others iteratives algorithms/ freeware codes.

If you have some information or code (Fortran77 or C) for my problem, please

let me know. Any reference would be helpful.

Thanks.

Jean Claude BERGES

French Space Center ( DGA/T/TI/MS/MN)

18,Av. Edouard Belin

31401 TOULOUSE Cedex 04 - FRANCE

E-mail : Jean-Claude.Berges@cst.cnes.fr

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

From: PARASOL Mailing List <parasol-mail@genias.de>

Date: Fri, 21 Feb 97 11:21 MET

**Subject: PARASOL - Parallel Sparse Matrix Solvers**

Dear Colleague,

PARASOL is a long term research ESPRIT IV project (Domain 4, Task 4.2)

which started on January 1st, 1996 and will last 3 years. Within the

project, new parallel algorithms will be developed: for the direct

solution of sparse systems of linear equations, for the iterative

solution of such systems based on either multigrid or domain decom-

position, and for their preconditioning. These algorithms will be

available in the public domain.

If you are working in this area and are interested in more information

about PARASOL please have a look at http://www.genias.de/parasol/ or

at our current newsletter http://www.genias.de/parasol/Newsletters.html.

Kind Regards, Lars Kurth

P.S.: To remove your name from this mailing list, please send an empty mail

to "parasol-mail@genias.de" with the subject "unsubscribe". To subscribe

to this mailing list, please send an empty mail to "parasol-mail@genias.de"

with the subject "subscribe".

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

From: George Miel <miel@CS.UNLV.EDU>

Date: Wed, 19 Feb 1997 14:07:33 -0800

**Subject: Seeking Help With High Performance Computing Workshop**

The Mechanical Engineering Dept at UNLV is conducting a

two day workshop on computational conductive heat transfer

on March 27-28 sponsored by NSF and others. We are looking

for established experts on High Performance Computing that

can interact with the participants (total of about 30). Their

area of expertise needs not be specifically on heat transfer but

rather on scalable parallel machines as applied to similar

scientific computation. We are able to provide support for

airfare, two hotel nites, and nourishment during the workshop.

Do you know qualified individuals (including yourself) that

might be interested? Time is of the essence as we need to

finalize our plans soon. Interested individuals should

contact me as soon as possible.

George Miel

Dept. of Mathematical Sciences

University of Nevada at Las Vegas

miel@cs.unlv.edu

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

From: Volker Mehrmann <volker.mehrmann@Mathematik.TU-Chemnitz.DE>

Date: Tue, 18 Feb 1997 11:26:25 MET

**Subject: Temporary Change of Address for Volker Mehrmann**

Temporary change of address.

> From March 1. to August 31. 1997 I will spend my sabbatical

at the Computer Science Dept. of the Univ. of Victoria.

Please note my coordinates for the period March 1. -- August 31. 1997:

Volker Mehrmann

Dept. of Computer Science

P.O. Box 3055

Victoria, B.C. Canada V8W 3P6

email: mehrmann@csr.uvic.ca

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

From: Tibor Csendes <csendes@sol.cc.u-szeged.hu>

Date: Sat, 22 Feb 1997 10:43:04 +0100 (MET)

**Subject: New Book in Global Optimization**

Title: Developments in Global Optimization

Edited by Immanuel M. Bomze, Tibor Csendes, Reiner Horst and Panos M. Pardalos

Publisher: Kluwer Academic Publishers (kluwer.wkap.com)

1997

Summary: In recent years global optimization has found applications in many

interesting areas of science and technology including molecular biology,

chemical equilibrium problems, medical imaging and networks. The collection of

papers in this book indicates the diverse applicability of global optimization.

Furthermore, various algorithmic, theoretical developments and computational

studies are presented.

The volume contains fully referred and selected papers of the Third Workshop on

Global Optimization, Szeged, Hungary, December 10-14, 1995.

Contents:

A. Neumaier: NOP - A Compact Input Format for Nonlinear Optimization Problems,

1-18.

S. Dallwig, A. Neumaier and H. Schichl: GLOPT - A Program for Constrained

Global Optimization, 19-36.

M.N. Vrahatis, D.G. Sotiropoulos and E.C. Triantafyllou: Global Optimization

for Imprecise Problems, 37-54.

D. Ratz: New Results on Gap-Treating Techniques in Extended Interval Newton

Gauss-Seidel Steps for Global Optimization, 55-72.

P.L. De Angelis, P.M. Pardalos and G. Toraldo: Quadratic Programming with Box

Constraints, 73-93.

I. Bomze, M. Pelillo and R. Giacomini: Evolutionary Approach to the Maximum

Clique Problem: Empirical Evidence on a Larger Scale, 95-108.

C. Stephens: Interval and Bounding Hessians, 109-119.

A. Strekalovsky and I. Vasiliev: On Global Search for Non-Convex Optimal

Control Problems, 121-133.

C.J. Price: A Multistart Linkage Algorithm Using First Derivatives, 135-152.

J. Hichert, A. Hoffmann and H.X. Phu: Convergence Speed of an Integral Method

for Computing the Essential Supremum, 153-170.

Z.B. Zabinsky and B.P. Kristinsdottir: Complexity Analysis Integrating Pure

Adaptive Search (PAS) and Pure Random Search (PRS), 171-181.

J.D. Pinter: LGO - A Program System for Continuous and Lipschitz Global

Optimization, 183-197.

Ya.D. Sergeyev: A Method Using Local Tuning for Minimizing Functions with

Lipschitz Derivatives, 199-216.

K.A. Dill, A.T. Phillips and J.B. Rosen: Molecular Structure Prediction by

Global Optimization, 217-234.

A. Pfening and M. Telek: Optimal Renewal Policy for Slowly Degrading Systems,

235-251.

W. Bollweg, H. Kroll and H. Maurer: Numerical Prediction of Crystal Structures

by Simulated Annealing, 253-288.

I. Garcia, P.M. Ortigosa, L.G. Casado, G.T. Herman and S. Matej:

Multidimensional optimization in image reconstruction from projections,

289-299.

K. Holmqvist, A. Migdalas and P.M. Pardalos: Greedy Randomized Adaptive Search

for a Location Problem with Economies of Scale, 301-313.

B. Imreh, F. Friedler, L.T. Fan: An Algorithm for Improving the Bounding

Procedure in Solving Process Network Synthesis by a B&B Method, 315-348.

Audience: All researchers and students working in mathematical programming.

Published in February 1997, xi+348 pp.; hardbound. ISBN 0-7923-3451-4

Additional information: http://www.inf.u-szeged.hu/~globopt

To order the book, you can:

E-mail kluwer@world.std.com.

Fax Kluwer at 617-871-6528.

Phone Kluwer at 617-871-6600.

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

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

Date: Sat, 15 Feb 1997 17:38:59 +0100 (MET)

**Subject: Fourth European PVM/MPI Users' Group Meeting**

The Fourth European PVM/MPI Users' Group Meeting

is organized by

Marian Bubak, Jack Dongarra and Jerzy Wasniewski

in Cracow, POLAND, November 3 - 5, 1997

For more information contact: www: http://www.cyf-kr.edu.pl/pvmpi97

ftp: ftp://ftp.cyf-kr.edu.pl/pvmpi97 or email: pvmpi97@cyf-kr.edu.pl

Best regards,

Jerzy

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

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

Date: Sat, 15 Feb 1997 17:39:59 +0100 (MET)

**Subject: Hewlett-Packard High Performance Computing Meeting**

The Hewlett-Packard High Performance Computing Meeting

is Organized by Marian Bubak

in Cracow, Poland, November 5 - 8, 1997

For more information contact: www: http://www.cyf-kr.edu.pl/hiper97

ftp://ftp.cyf-kr.edu.pl/hiper97 or email: hiper97@cyf-kr.edu.pl

Best regards,

Jerzy

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

From: Michael Overton <olof98@overton.cs.nyu.edu>

Date: Sat, 15 Feb 97 23:05:25 EST

**Subject: Conference in Honor of Olof Widlund**

We are very pleased to announce

A NUMERICAL ANALYSIS CONFERENCE IN HONOR OF

OLOF B. WIDLUND

ON THE OCCASION OF HIS 60th BIRTHDAY

Fri January 23 - Sat January 24, 1998

COURANT INSTITUTE

NEW YORK

The program will consist of technical talks in the day

time, with no parallel sessions. Social events are

planned for both evenings. We expect substantial

participation from Olof's many coworkers and colleagues,

including many of his former students. The primary technical

emphasis of the conference will be domain decomposition, but

other areas of numerical analysis and applied mathematics

will also be represented.

The costs of the conference will be kept as low as possible.

Because it will end on Saturday night, participants will be

able to take advantage of discounted airfares. Special NYU

discounted prices will be available for hotel rooms.

There will be no registration fee.

The conference is open to everyone. Mark your calendar and

send email if you would like be added to the mailing list for

subsequent announcements.

Petter Bjorstad, Michael Overton, Barry Smith and Daniel Szyld,

organizers.

Email: olof98@cims.nyu.edu

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

From: Trini Flores <flores@siam.org>

Date: Wed, 19 Feb 97 09:44:57 EST

**Subject: SIAM Conference on Applied Linear Algebra**

Sixth SIAM Conference on Applied Linear Algebra

October 29-November 1, 1997

Snowbird Ski and Summer Resort

Snowbird, Utah

Deadline for submission of minisymposium proposals EXTENDED TO: APRIL 1, 1997.

Deadline for submission of contributed abstracts: APRIL 1, 1997.

The minisymposium proposal form and LaTeX macros for submitting

abstracts can be accessed electronically through the conference Web

homepage at

http://www.siam.org/conf.htm

For more information about plenary speakers and their topics of

presentations,or how to submit minisymposium proposals and contributed

papers, visit

http://www.siam.org/meetings/la97/la97home.htm

or contact SIAM. Telephone: 215-382-9800 Fax: 215-386-7999

E-mail: meetings@siam.org

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

From: Fritz Keinert <keinert@iastate.edu>

Date: Fri, 21 Feb 1997 10:30:22 CST

**Subject: Midwest Numerical Analysis Day 1997**

SECOND CALL FOR PARTICIPANTS

MIDWEST NUMERICAL ANALYSIS DAY 1997

Saturday, April 12, 1997

Iowa State University, Ames, Iowa

Information about the conference is available at

http://www.math.iastate.edu/Midwest_NA_Day. Confirmed featured

speakers are Ivo Babuska (Univ. of Texas at Austin), Joe Flaherty

(RPI), and Petter Bjorstad (Univ. of Bergen, Norway, currently at IMA,

Minneapolis).

If you are interested in presenting a 20-minute talk, submit a title

and abstract by March 17, 1997, either through the conference web

page, via e-mail to naday@iastate.edu, or to one of the organizers:

Roger Alexander (alex@iastate.edu, (515) 294-7579) and Fritz Keinert

(keinert@iastate.edu, (515) 294-5223). No registration is required to

simply attend.

The joint annual meeting of the Iowa sections of MAA/ASA/IMATYC will

be held in the same building on the same day. There will be

opportunity to hear talks or socialize with participants from both

conferences. The featured speaker at the other meeting will be Roger

Horn (Univ. of Utah).

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

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

Date: Sat, 22 Feb 1997 17:55:42 +0100 (MET)

**Subject: Numerical Modeling in Continuum Mechanics**

Charles University Prague Czech Technical University Prague

Ruprecht-Karls-Universit\"at Heidelberg

Second Announcement

NUMERICAL MODELLING IN CONTINUUM MECHANICS

Theory, Algorithms, Applications

The Third Summer Conference

Prague (Czech Republic), September 8 - 11, 1997

Chairmen:

Miloslav Feistauer, Faculty of Mathematics and Physics, Institute of

Numerical Mathematics, Charles University Prague

Karel Kozel, Faculty of Mechanical Engineering, Department of

Technical Mathematics, Czech Technical University Prague

Rolf Rannacher, Institute of Applied Mathematics,

Ruprecht-Karls-Universitaet Heidelberg

Program Committee:

M. Feistauer, P. Le Tallec, K. Kozel, A. Quarteroni, R. Rannacher

Invited Plenary Speakers:

D. N. Arnold (USA), I. Babuska (USA), H.-G. Bock (FRG), R. Glowinski (USA),

P. Le Tallec (France), A. Quarteroni (Italy), Ch. Schwab (Switzerland),

J. Struckmeier (FRG), A. Valli (Italy), W.-L. Wendland (FRG), J.-R. Whiteman

(Great Britain)

Topics:

Fluid Dynamics

Non-Newtonian and Viscoelastic Flows

Porous Media Flows

Material, Structures and Optimization

Structural Mechanics

Call for Papers:

The program of the conference will include invited 50 minute lectures

and 20 minute communications. Please, apply to the contact address,indicate

your intention to give a communication and send us a 15 line abstract.

(This is necessary for acceptance of your communication.) All invited

lectures and communications can be published in the conference proceedings.

All papers will be reviewed. Detailed information will be given later.

Social Program:

The participants will have the opportunity to visit historical parts of

Prague, one of the oldest and most beautiful European towns, full of

romanesque, gothic and baroque churches, palaces and monuments, and to

take part in the Welcome Party and a Concert.

Fees:

The basic fee is 500 US $, which covers Conference Fee, Welcome Party,

Concert, accomodation in double room (4 nights), meals (4x breakfast and

lunch) and refreshment during the conference. It also entitles

participants to receive a copy of the Conference Program, Abstract

Booklet and Proceedings.

The basic fee for accompanying persons is 250 US $, which includes

accomodation + breakfast (4x), Concert and Welcome Party.

Some reduction will be available for a limited number of PhD students

and participants from East European countries.

Important Dates:

February 28, 1997: Submittance of the Registration Form

April 30: Notification of acceptance of the communication

May 31: Payment of the Conference Fee

September 7: Arrival, registration

September 8-11: Scientific program

September 11 or 12: Departure

In view of air travel restrictions, it is possible to arrive already on

September 6 (Saturday).

Contact Address:

Prof. Dr. Miloslav Feistauer, DrSc.

Charles University Prague

Faculty of Mathematics and Physics

Institute of Numerical Mathematics

Malostranske nam. 25

118 00 Praha 1

Czech Republic

E-mail: nmicm97@ms.mff.cuni.cz

Phone: +42 2 21914223, +42 2 21914225

Fax: +42 2 535229

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

From: Steven Leon <SLEON@umassd.edu>

Date: Fri, 21 Feb 1997 15:55:34 -0500 (EST)

**Subject: ATLAST Linear Algebra Workshop**

ATLAST Linear Algebra Workshop

July 30 -- August 2, 1997

University of Wisconsin

Madison, Wisconsin

Workshop Presenter -- Lila Roberts

ATLAST is an NSF Project to Augment the Teaching of Linear Algebra

through the use of Software Tools. This is the sixth year of ATLAST

workshops. So far over 400 faculty nationwide have participated in

14 ATLAST workshops and approximately 50 of these faculty have also

participated in one of two invited ATLAST Developers Workshops held

during the summers of 1994 and 1996. A third Developers Workshop is

planned for June 25-28 at the University of California San Diego.

Workshop participants learn about existing software for linear

algebra and are trained in the use of the MATLAB software package.

Attendees will design classroom lessons that incorporate computer

software making use of ATLAST materials that were developed in previous

workshops. These materials are included in "ATLAST Computer Exercises

for Linear Algebra", Prentice-Hall, 1997. A selection of the lesson

plans that are developed will be included on the ATLAST Web page and

some may also be included in the next edition of the ATLAST book.

The first two days of the workshop will be devoted to learning to use

MATLAB and learning how to incorporate software into linear algebra

classes. There will also be discussions on general teaching issues and

linear algebra curriculum. The last two days of the workshop will be

spent working in teams to design lesson plans.

The ATLAST Project provides room and board for participants attending

the workshops.

The ATLAST Project Director is Steven J. Leon and the Assistant Director

is Richard Faulkenberry. Both are in the Mathematics Department of the

University of Massachusetts Dartmouth. The ATLAST project has been

supported by two National Science Foundation Faculty Enhancement grants

and an Education Seed Grant from the International Linear Algebra Society.

Royalties from the ATLAST book are also used to support the project.

All teachers of undergraduate linear algebra courses at colleges or

universities in the USA are invited to apply for the workshop.

The deadline for applications is April 30, 1997. The workshop is limited

to thirty participants and late applications will be accepted on a space

available basis. A screening committee will review applications and

notify applicants of its decisions early in May.

More information about the ATLAST Project and an application form are

available from the ATLAST web page:

http://www.umassd.edu/ATLAST/welcome.html

or by contacting

Steven J. Leon

ATLAST Project Director

Department of Mathematics

University of Massachusetts Dartmouth

North Dartmouth, MA 02747-2300

Telephone: (508) 999-8320

FAX: (508) 910-6917

E-mail: ATLAST@UMASSD.EDU

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

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

Date: Fri, 21 Feb 1997 06:56:39 -0500

**Subject: Research Position at the University of Tennessee**

Position available at the University of Tennessee

A research position is available in parallel scientific computing at

the University of Tennessee. The research will include development

of parallel numerical algorithms and of scalable parallel libraries.

This position offers an exceptional opportunity for

innovative research in scientific computing on advanced architectures,

and will involve participation in collaborative projects as part of

the ScaLAPACK effort, described at http://www.netlib.org/scalapack/.

Candidates must have a PhD in computer science, mathematics, or a related

discipline. Expertise in parallel computing and object oriented programming

is required, and expertise in scientific computing is highly desirable.

A strong research capability in numerical methods, with emphasis on

numerical linear algebra techniques for solving large-scale problems,

is essential.

The position is for a period of one year, and will be renewable subject

to availability of funds and satisfactory performance. Additional

benefits of the position include a competitive salary, travel

opportunities, access to state-of-the-art computational facilities

(including both parallel architectures and high-performance workstations),

and collaborative research opportunities in a very active research

program in advanced scientific computing.

The position is available immediately. Applications will be accepted

until the position is filled.

Inquiries should be directed to:

Jack Dongarra

Computer Science Department

University of Tennessee

Knoxville, TN 37996-1301

Phone: 423-974-8295

Fax: 423-974-8296

email: dongarra@cs.utk.edu

http://www.netlib.org/utk/people/JackDongarra.html

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

From: Head of Department <head@ma.man.ac.uk>

Date: Fri, 21 Feb 1997 14:28:30 GMT

**Subject: Faculty Position at Manchester University**

From the Head of Department

The Department of Mathematics, Pure & Applied

The University of Manchester

The Beyer Chair in Applied Mathematics is the senior chair of applied

mathematics at Manchester University. Particulars of this Chair, which

fell vacant on the resignation of Professor Phil Hall, and which is

now being advertised, are available from the WWW: click on `Beyer

Chair' at

http://www.ma.man.ac.uk/

or use

http://www.ma.man.ac.uk/Beyer

Applied mathematicians who have a distinguised research record and

wish to be considered for this chair should, QUOTING reference 119/97,

send one copy of their application (giving full details of their

experience, qualifications, and the names of 3 referees, in a form

suitable for photocopying) to:

The Registrar & Secretary,

The University,

Manchester M13 9PL,

England,

The CLOSING date for receipt of applications by the Secretary and

Registrar of the University is May 1st 1997.

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

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

Date: Sat, 22 Feb 97 15:14:43 PST

**Subject: Fellowships at Stanford University**

Stanford University

Program in Scientific Computing and Computational Mathematics

NSF Graduate Research Traineeships -- Fall 1997

Exceptionally well-qualified undergraduates are urged to apply

for these NSF Fellowships, supporting graduate study towards

the PhD Degree within the Program in Scientific Computing and

Computational Mathematics.

Further information about the Program may be obtained from

our web-page:

http://www-sccm.Stanford.edu

or by contacting Andrew Stuart:

stuart@sccm.stanford.edu (415-723-8142)

The Fellowships are available to US Citizens and Permanent Residents only.

Closing Date: March 10th

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

From: Dorothy Bollman <bollman@RUMMAT1.UPR.CLU.EDU>

Date: Sat, 15 Feb 1997 09:38:20 -0500 (EST)

**Subject: Faculty Positions at the University of Puerto Rico at Mayaguez**

FACULTY POSITIONS AT THE UNIVERSITY OF PUERTO RICO AT MAYAGUEZ

The Mathematics Department of the University of Puerto Rico at Mayaguez

anticipates two tenure-track positions for the academic year 1997-98.

One is for an applied/computational statistian. The other is for a

computational mathematician with some background in computer science,

preferably computer architecture. Ph.D. prefered. Knowledge of Spanish

a plus, although not required.

Interested persons may send a CV and have three letters of reference sent to:

Dorothy Bollman, Chair

Department of Mathematics

University of Puerto Rico

Mayaguez, PR 00681-5000

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

From: Kristian Witsch <witsch@zeta.numerik.uni-duesseldorf.de>

Date: Thu, 20 Feb 1997 10:53:53 +0100

**Subject: Position at University of Duesseldorf**

Am Mathematischen Institut der Heinrich-Heine-Universitaet Duesseldorf

ist sofort eine

Universitaetsprofessur (C4)

fuer Angewandte Mathematik

(nachfolge Prof. Dr. B. Doering)

wiederzubesetzen. Der/ Die zukuenftige Stelleninhaber/in soll in der Forschung

ein aktuelles Gebiet der Angewandten Mathematik und in der Lehre auch das

Fach Numerische Mathematik vertreten.

Einstellungsvoraussetzung sind Habilitation oder gleichwertige wissenschaftliche

Leistungen gemaess 49 UG NW.

Die Universitaet strebt an, den Anteil der Frauen am wissenschaftlichen Personal

zu erhoehen, und begruesst daher besonders Bewerbungen von Wissenschaftlerinnen.

Die Bewerbung geeigneter Schwerbehinderter ist erwuenscht.

Bewerbungen mit tabellarischem Lebenslauf, wissenschaftlichem Werdegang,

Schriftenverzeichnis und Verzeichnis der abgehaltenen Lehrveranstaltungen

werden bis zum 1. April 1997 erbeten an den Dekan der

Mathematisch-Naturwissenschaftlichen Fakultaet der Heinrich-Heine-Universitaet

Duesseldorf, Universitaetsstr. 1, D-40225 Duesseldorf.

Sie finden unsere Homepage im Internet unter

http://www.mathematik.uni-duesseldorf.de

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

From: James Uber <juber@dolphin.cee.uc.edu>

Date: Mon, 17 Feb 1997 10:42:34 -0500

**Subject: Ph.D. Fellowships at University of Cincinnati**

Interdisciplinary Ph.D. Fellowships:

The University of Cincinnati Earth System Science Program announces

the availability of several Ph.D. graduate student fellowships,

beginning Fall 1997. With support from the National Science

Foundation, each fellow will receive a full tuition scholarship and a

monthly stipend, plus funds for research supplies, travel to meetings,

and support of a summer sabbatical at an off-campus location. Due to

financial support requirements, all fellows must be either

U.S. citizens or permanent residents. While the scope of research

topics is broad and flexible, we are specifically seeking one or more

individuals with interests in: 1) studying spatially distributed

real-time control of disinfectant residual in water distribution

systems, and 2) studying societies as complex adaptive systems, with an

emphasis on understanding the role of watershed hydrology and climate

in societal organization. These two opportunities are described

below, along with contact information.

1. Real-Time Spatially-Distributed Disinfectant Control

in Water Distribution Networks

The question we wish to answer is stated quite simply: How best to

control the spatio-temporal distribution of disinfectant residual

within a water distribution network? The actual problem is not simple,

however, due to complex system dynamics and chemical kinetics. The

looped distribution network (i.e., it is not a spanning tree) is a

multiple-input multiple-output, spatially extended dynamic system with

significant time delays. The network hydraulics, which govern

disinfectant transport on a system scale, are driven by external

consumer loads and time varying pump operations, and it is typical

that network flows will change dramatically and frequently, both in

magnitude and direction. Coupled with these dynamics are complex

disinfectant kinetics that depend on the pipe material at a physical

location, the water source(s), and the type of disinfectant addition

at the source(s) (multiple disinfectants are sometimes used). Further,

the reactions with chlorine (the most common disinfectant) produce

byproducts that evidence suggests are carcinogenic. This evidence has

led to tightening lower and upper limits on acceptable chlorine

concentrations within the network, and thus to a real need for more

advanced control approaches and for a better understanding of

disinfectant decay kinetics.

Our plans for this work include the development and adaptation of

control-theoretic approaches for real-time spatially-distributed

control of multiple simultaneous disinfectant additions. Activities

that fall within the project scope include: 1) development of

appropriate modeling and simulation methods, 2) consideration of

system robustness in the face of uncertain fluctuations in water

demands, and 3) optimal location of disinfectant additions to minimize

control effort.

Applications are encouraged from individuals in any branch of

engineering or the physical sciences; applicants should demonstrate a

high degree of creativity along with strong quantitative and

programming skills, and are expected to interact with chemists,

electrical and environmental engineers, and utility personnel

participating on the research team. For more information including

application materials, contact Prof. Jim Uber (Environ. Hydrology,

513-556-3643, Jim.Uber@uc.edu) or Prof. Marios Polycarpou (Elec. &

Comp. Eng. & Comp. Sci., 513-556-4763, Marios.Polycarpou@uc.edu).

2. Spatially Distributed, Multi-Agent Models of Socioeconomic Organization.

The selected fellow will investigate the nature of societal adaptation

to the watershed environment, coupled with climate variability in the

form of spatially or temporally variable precipitation. Historically,

the evolution of societies has been impacted by the spatial and temporal

distribution of water resources over the landscape. For example, the

ancient Maya of northwestern Belize are theorized to have migrated

upland from swamp margins to higher elevations, despite a regional

climate that is arid four months out of twelve. Was this adaptation,

as opposed to remaining in the swamp margins, one visible aspect of

Maya self-organization toward a "critical" state - characterized by

large populations and high degrees of resource utilization? In an

attempt to address such questions, the fellow will be involved with

current work on spatially distributed dynamic models of socioeconomic

adaptation, in the context of spatial and temporal water resource

dynamics over a cellular --- possibly fractal --- landscape. On this

landscape reside a discrete number of agents, representing households;

these agents occupy land, engage in production and consumption of a

single good, and in the process require locally available water

resources. Further, the agents enter into exchange agreements with

other agents belonging to their social network, migrate in response

to stress, and reproduce or die according to their ability to produce

and consume in sufficient quantities. Applications are encouraged from

individuals in the physical and natural sciences, economics, and

engineering; applicants should demonstrate a high degree of

creativity along with strong quantitative skills, and are expected to

interact with hydrologists, engineers, and social scientists

participating on the research team. For more information including

application materials, contact Prof. Jim Uber (Environ. Hydrology,

513-556-3643, Jim.Uber@uc.edu) or Prof. Ali Minai (Elec. &

Comp. Eng. & Comp. Sci., 513-556-4783, Ali.Minai@uc.edu).

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

From: SIAM <jean-bart@siam.org>

Date: Thu, 20 Feb 97 11:43:21 EST

**Subject: Contents, SIAM Review**

SIAM Review

March 1997, Volume 39, Number 1

CONTENTS

INTRODUCTORY

Changes Planned for SIAM Review

ARTICLES

Eigenmodes of Isospectral Drums

Tobin A. Driscoll

On Two Ways of Stabilizing the Hierarchical Basis Multilevel Methods

Panayot S. Vassilevski

The Mathematics of the Pentium Division Bug

Alan Edelman

New Conservation Laws for the Interaction of Nonlinear Waves

A. M. Balk

CLASSROOM NOTES

The Inspection Paradox Inequality

John E. Angus

Hoffman's Circle Untangled

Jon Lee

An Analytic Center Manifold for a Simple Epidemiological Model

Marc R. Roussel

Horizontal Circular Curves and Cubics

Francois Dubeau

Optimum Spring-Damper Design for Mass Impact

David A. Peters

PROBLEMS AND SOLUTIONS

BOOK REVIEWS

Bayesian Theory (Jose M. Bernardo and Adrian F. M. Smith), Mark Berliner

Applied Stochastic Processes: A Biostatistics and Population Oriented Approach

(Suddhendu Biswas), Rick Durrett

Geometric Tomography. Encyclopedia of Mathematics and its Applications. Vol. 58

(Richard J. Gardner), Wm. J. Firey

Matrices of Sign-Solvable Linear Systems (Richard A. Brualdi and Bryan L.

Shader), Peter M. Gibson

Dynamical Systems of Algebraic Origin (Klaus Schmidt), Leon W. Green

Probability Theory: An Advanced Course (Vivek S. Borkar), Allan Gut

Introduction to Spectral Theory, with Applications to Schrodinger Operators (P.

D. Hislop and I. M. Sigal), Bernard Helffer

Introduction to Mechanics and Symmetry (Jerrold E. Marsden and Tudor S. Ratiu),

Robert Hermann

Afternotes on Numerical Analysis (G. W. Stewart), David R. Kincaid

Linear and Quasilinear Parabolic Problems. Volume 1: Abstract Linear Theory

(Herbert Amann), Gary M. Lieberman

Modelling Mathematical Methods and Scientific Computation (Nicola Bellomo and

Luigi Preziosi), J. David Logan

Water Waves: Relating Modern Theory to Advanced Engineering Practice (Matiur

Rahman), Anne C. Morlet

Finite Sums Decompositions in Mathematical Analysis (Themistocles M. Rassias and

Jaromir Simsa), Frantisek Neuman

Borel-Laplace Transform and Asymptotic Theory: Introduction to Resurgent

Analysis (Boris Yu. Sternin and Victor E. Shatalov), Adri Olde Daalhuis

The Splitting Extrapolation Method (C. B. Liem, T. Lu, and T. M. Shih), Ulrich

Rude

Asymptotic Efficiency of Nonparametric Tests (Yakov Nikitin), Ramalingam

Shanmugam

Handbook of Radiation and Scattering of Waves (Adrianus T. de Hoop), Joseph J.

Shirron

Accuracy and Stability of Numerical Algorithms (Nicholas J. Higham), G. W.

Stewart

Fuzzy Logic for Business and Industry (Earl D. Cox), Rod Taber

Fourier Integral Operators (J. J. Duistermaat), Michael E. Taylor

Wavelets: An Analysis Tool (M. Holschneider), David Walnut

SELECTED COLLECTIONS

LATER EDITIONS

CHRONICLE

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

From: SIAM <thomas@siam.org>

Date: Thu, 20 Feb 97 15:38:42 EST

**Subject: Contents, SIAM Applied Mathematics**

SIAM JOURNAL ON Applied Mathematics

APRIL 1997 Volume 57, Number 2

CONTENTS

Multidimensional Linear Stability of a Detonation Wave at High Activation Energy

Mark Short

Analysis of a Reaction-Diffusion System Modeling Man-Environment-Man Epidemics

V. Capasso and R. E. Wilson

Reciprocal Relations, Bounds, and Size Effects for Composites with Highly

Conducting Interface

Robert Lipton

Variational Approximation of Maxwell's Equations in Biperiodic Structures

Gang Bao

Cavity Effects in Microwave Heating of Ceramics

G. A. Kriegsmann

Calculating Current Densities and Fields Produced by Shielded Magnetic Resonance

Imaging Probes

Lawrence K. Forbes, Stuart Crozier, and David M. Doddrell

Efficient Estimation of Linear Functionals in Emission Tomography

Alvin Kuruc

Eigenvalue Aymptotics of Layered Media and Their Applications to the Inverse

Problem

Gerasimos A. Athanassoulis and Vassilis G. Papanicolaou

An Asymptotical Inversion of the Eigenfrequencies for a Three-Dimensional

Problem with Spherical Symmetry

Mikhail Brodsky

On the Spectra of Pulses in a Nearly Integrable System

Toshiyuki Ogawa and Hiromasa Suzuki

Probability Distributions in Periodic Random Environment and Its Applications

Boyan Dimitrov, Stefanka Chukova, and David Green, Jr.

Nonlinear Approximation of Random Functions

Albert Cohen and Jean-Pierre D'Ales

On the Solution of Wiener-Hopf Problems Involving Noncommutative Matrix Kernel

Decompositions

I. David Abrahams

Diagonalizable Generalized Abel Integral Operators

Alok Chakrabarti and A. J. George

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

From: Baltzer Science <mailer@ns.baltzer.nl>

Date: Mon, 17 Feb 1997 12:39:02 +0100

**Subject: Contents, Advances in Computational Mathematics**

Advances in Computational Mathematics 7 (1997) 1-2

Special Issue: Parallel methods for ODEs

Editor: Kevin Burrage

Kevin Burrage

Parallel methods for ODEs 1-31

Pierluigi Amodio and Luigi Brugnano

Parallel ODE solvers based on block BVMs 5-26

Claus Bendtsen

A parallel stiff ODE solver based on MIRKs 27-36

K. Burrage and H. Suhartanto

Parallel iterated methods based on multistep Runge-Kutta methods of Radau type

37-57

K. Burrage and H. Suhartanto

Parallel iterated method based on multistep Runge-Kutta of Radau type for stiff

problems 59-77

J. C. Butcher

Order and stability of parallel methods for stiff problems 79-96

Robert F. Enenkel and Kenneth R. Jackson

DIMSEMs - diagonally implicit single-eigenvalue methods for the numerical solution

of stiff ODEs on parallel computers 97-133

Min Hu, Ken Jackson, Jan Janssen and Stefan Vandewalle

Remarks on the optimal convolution kernel for CSOR waveform relaxation 135-156

P. J. van der Houwen and J. J. B. de Swart

Parallel linear system solvers for Runge-Kutta methods 157-181

P. J. van der Houwen and W. A. van der Veen

Waveform relaxation methods for implicit differential equations 183-197

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End of NA Digest

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