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

- Least Squares Fit to a Lambda matrix
- Change of Address for Oleg Burdakov
- New Book, Iterative Methods for Optimization
- New Book, Pattern Formation in Viscous Flows
- New Book, The OPL Optimization Programming Language
- Panamerican Workshop in Applied and Computational Math
- SIAM Conference on Geometric Design
- Conference on Parallel CFD
- Research Position at Lawrence Berkeley Lab
- Contents, MA Journal of Numerical Analysis
- Contents, Optimization Methods and Software
- Contents, Journal of the KSIAM

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

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

From: Nils Wagner <nils@Rcs1.urz.tu-dresden.de>

Date: Mon, 29 Mar 1999 09:18:29 +0100

**Subject: Least Squares Fit to a Lambda matrix**

A complex dynamic stiffness matrix ${\bf S}(a_0)$

of order n fully populated and nonsymmetric is approximated

as follows

${\bf S}(a_0) \approx {\bf Q}^{-1}(ia_0) {\bf P}(ia_0)$

where

${\bf P}(ia_0) = {\bf 1} + ia_0 {\bf P}_1 + \dots + (ia_0)^{M-1}{\bf P}_{M-1}$

${\bf Q}(ia_0) =3D {\bf 1} + ia_0 {\bf Q}_1 + \dots + (ia_0)^M{\bf Q}_M$

i = \sqrt{-1}

a_0 : dimensionless frequency

{\bf 1} : identity matrix

The $(2M-1)$ unknown real matrices $P_i, Q_j$ should be determined

by a curve fitting procedure based on least squares.

Does anyone have any ideas or software (FORTRAN) for this problem ?

I would be very grateful for any help.

Nils

Dipl.-Ing. Nils Wagner

Technische Universit=E4t Dresden

Fakult=E4t Bauingenieurwesen

Lehrstuhl Dynamik der Tragwerke

D-01062 Dresden

Germany

Fax : +49 351 463 4096

Phone : +49 351 463 5325

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

From: Oleg Burdakow <olbur@mai.liu.se>

Date: Sat, 3 Apr 1999 19:03:21 +0200 (MET DST)

**Subject: Change of Address for Oleg Burdakov**

Dear Colleagues,

my new address is:

Oleg Burdakov

Division of Optimization

Department of Mathematics

Linkoeping University

S - 581 83 Linkoeping

Sweden

Tel: +46 13 281473

Fax: +46 13 285770

E-mail: burdakov@mai.liu.se

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

From: Tim Kelley <ctk@eos.ncsu.edu>

Date: Wed, 31 Mar 1999 17:01:57 -0500

**Subject: New Book, Iterative Methods for Optimization**

My new book:

Iterative Methods for Optimization

no 18 in Frontiers in Applied Mathematics

ISBN: 0-89871-433-8

has just been published by SIAM.

Complete information on the book is at

http://www.siam.org/catalog/mcc12/fr18.htm

I've written a suite of MATLAB codes to accompany the book.

The codes can be found at

http://www4.ncsu.edu/~ctk/optimization_codes.html

-- Tim

C. T. Kelley

Department of Mathematics, Box 8205

North Carolina State University

Raleigh, NC 27695-8205

(919) 515-7163, (919) 515-3798 (FAX)

Tim_Kelley@ncsu.edu

http://www4.ncsu.edu/~ctk/

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

From: Rita Meyer-Spasche <rim@ipp.mpg.de>

Date: Thu, 1 Apr 1999 14:55:34 +0200 (MET DST)

**Subject: New Book, Pattern Formation in Viscous Flows**

The following book has appeared in March:

Pattern Formation in Viscous Flows: The Taylor-Couette Problem and

Rayleigh-Benard Convection

by Rita Meyer-Spasche

1999, 224 pages, Hardcover, sFr 98, DM 118.

ISBN 3-7643-6047-X, Birkhauser Verlag, ISNM 128

The Taylor-Couette system is one of the most studied examples of fluid

flow exhibiting the spontaneous formation of dynamical structures. In this book

the variety of time independent solutions with periodic spatial structure is

numerically investigated by solution of the Navier-Stokes equations.

Topics and questions addressed are:

Mathematical modeling. Numerical modeling. What kinds of flow patterns do

the equations allow in the nonlinear regime? How many solutions exist for

given values of the control parameters? Are they stable? How do spatial

patterns and the number of solutions vary with the parameters?

For some parameter values many more solutions were found than previously

expected (up to 21), in other parameter regimes not even those solutions could

be found whose existence had been taken for granted. These "experimental"

numerical results led to conjectures on the global structure of secondary

bifurcations in the Taylor system and thus to possible explanations

for existence and non-existence of solutions. These conjectures were

verified and generalized for the mathematically closely related equations

of Rayleigh-Benard convection, and they were numerically confirmed for the

Taylor system.

This volume reviews work published in journals and conference

proceedings in recent years and shows how results obtained with different

methods (scientific computing, analytical methods, experiments with

fluids) by authors working in different disciplines (mathematicians,

physicists, engineers) complement and supplement each other. It also contains

new previously unpublished results, mainly on the global structure of

secondary bifurcations and on pattern formation.

Readership:

Mathematicians, physicists and engineers (researchers and graduate

students) interested in fluid dynamics, scientific computing and/or

dynamical systems.

Rita Meyer-Spasche, Muenchen-Garching, Germany (na.meyer-spasche)

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

From: Jud Wolfskill <wolfskil@MIT.EDU>

Date: Thu, 1 Apr 1999 17:10:26 -0400

**Subject: New Book, The OPL Optimization Programming Language**

The OPL Optimization Programming Language

Pascal Van Hentenryck

with contributions by Irvin Lustig, Laurent Michel, and Jean-Francois Puget

For more information please visit

http://mitpress.mit.edu/promotions/books/VANPPS99

Linear programming, integer programming, and combinatorial optimization

problems are ubiquitous in areas such as planning, scheduling, sequencing,

resource allocation, design, and configuration, yet they are still

challenging to formulate and express. OPL (Optimization Programming

Language) is a new modeling language for combinatorial optimization that

simplifies the formulation and solution of optimization problems. Perhaps

the most significant dimension of OPL is the support for constraint

programming, including sophisticated search specifications, logical and

higher order constraints, and support for scheduling and resource

allocation applications.

This book, written by the developer of OPL, is a comprehensive introduction

to the OPL programming language and its application to problems in linear

and integer programming, constraint programming, and scheduling. Readers

should be familiar with combinatorial optimization, at least from an

application standpoint.

An industrial implementation of OPL is available from the international

software company Ilog.

Pascal Van Hentenryck is Professor in the Department of Computer Science

and Engineering at the University of Louvain, Belgium. He is a coauthor of

Numerica: A Modeling Language for Global Optimization (MIT Press, 1997).

8 x 9, 255 pp., 51 illus., paper 0-262-72030-2

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

From: Jose Castillo <castillo@myth.sdsu.edu>

Date: Mon, 29 Mar 1999 10:44:39 -0800 (PST)

**Subject: Panamerican Workshop in Applied and Computational Math**

The Third PanAmerican Workshop on Applied and Computational Mathematics

(PWACM III) will be held in Chile, December 12-17, 1999. (The exact

location is to be determined). The Workshop will emphasize applications of

mathematics to industry, technology, science and society. Proposals for

mini-workshops, short talks, posters, and short courses are solicited.

See

http://www.sci.sdsu.edu/math_cs/PanAm98.html

Professor Jose E. Castillo

Interdisciplinary Research Center

San Diego State University

San Diego California 92182-7720

Phone (619)-594-7205 Fax (619)594-6746

URL http://rohan.sdsu.edu/~castillo

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

From: Trini Flores <flores@siam.org>

Date: Tue, 30 Mar 99 13:20:49 -0500

**Subject: SIAM Conference on Geometric Design**

Sixth SIAM Conference on GEOMETRIC DESIGN

November 2-5, 1999

Sheraton Old Town Hotel

Albuquerque, New Mexico

DEADLINE FOR ABSTRACT SUBMISSIONS EXTENDED TO APRIL 15, 1999.

Due to several requests that we have received, the Organizing

Committee is pleased to inform you that the DEADLINE for submissions

of a 75-word abstract for a Standard Lecture Session or Poster

Session; a 75-word abstract plus one-page extended abstract for a

Focus Session has been extended to APRIL 15, 1999.

For more information about the conference, visit:

www.siam.org/meetings/gd99.

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

From: David Keyes <keyes@icase.edu>

Date: Fri, 2 Apr 1999 19:55:18 -0500 (EST)

**Subject: Conference on Parallel CFD**

Early Registration Reminder

PARALLEL CFD'99

May 23-26, 1999

Williamsburg, Virginia, USA

April 15, 1999 is the early registration deadline for Parallel CFD'99.

Visit http://www.parcfd.org for newly posted program details, including

Plenary Presentations by:

Antoine Desideri INRIA, France

Paul Fischer Argonne National Lab, USA

Marc Garbey University of Lyon, France

Shinichi Kawai National Space Development Agency, Japan

Trond Kvamsdal 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

Special Reports by:

Robert Voigt College William & Mary and DOE, USA

on the ASCI Alliance Program

Douglas McCarthy Boeing, USA

on the CFD General Notation System

A Tutorial by:

William Gropp Argonne National Lab, USA

Lois McInnes Argonne National Lab, USA

on the Portable Extensible Toolkit for Scientific Computing

Contributed Presentations by:

60 researchers representing the state of parallel CFD art and

architecture from Asia, Europe, and North and South America

Primary sponsors include:

Army Research Office

International Business Machines

National Aeronautics and Space Administration

National Science Foundation

Southeastern Universities Research Association

Sponsors-in-kind include:

The College of William & Mary

U. S. Department of Energy

Institute for Computer Applications in Science and Engineering

Old Dominion University

The 1999 meeting of Parallel CFD is the 11th in a series, which was last

in the USA at Caltech in 1995 and does not return to the USA again before

2002.

The conference package includes guided tours of the NASA Langley Research

Center and its visitor center, the Virginia Air and Space Museum, with

highlights being: the Apollo 12 command module, Harrier and Corsair

aircraft, the lunar lander test facility, the aircraft landing dynamics

facility, historic and active windtunnels [no, computers aren't replacing

them yet!], and a reserved viewing of an IMAX film featuring NSF-sponsored

simulations of colliding galaxies. Prolong your visit to the Virginia

Peninsula to visit interpretations of pre-Revolutionary life in Jamestown,

Williamsburg, and Yorktown, and to enjoy the Chesapeake Bay at its finest

season.

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

From: Teresa Head-Gordon <TLHead-Gordon@lbl.gov>

Date: Wed, 31 Mar 1999 15:11:09 -0800

**Subject: Research Position at Lawrence Berkeley Lab**

Biologist Staff Scientist/Software Development Program

The Ernest Orlando Lawrence Berkeley National Laboratory's Physical

BioSciences Division is seeking a Biologist Staff Scientist to conduct

research in structural biology, molecular biology or biophysics and lead

the division's software development program. Incumbent will play a key

national role in outreach, dissemination and service for activities in

computational biology centered at the Berkeley Lab and NERSC high

performance computing facility and will manage the development of

software programs in biophysics using computational tools in biology.

Plan and deliver computational biology workshops, writing online web

tutorials, and contribute in general to the work performed by NERSC's

User Services group with an eye to the needs of computational

biologists.

The successful candidate will have several years research experience in

structural/molecular biology or biophysics combined with a broad

computational background including scientific applications programming

with expertise in distributed memory parallel computers, developing

code, using debuggers and performance analysis tools, UNIX, FORTRAN, and

C.

Applicants are requested to submit a curriculum vitae, list of

publications, statement of research interests, and the names of at least

three references no later than April 30, 1999 to, Chair Search

Committee, Job #PBS10322 , Physical BioSciences Division, MS Hildebrand,

Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA

94720. Berkeley Lab is an Affirmative Action/Equal Opportunity Employer

committed to the development of a diverse workforce.

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

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

Date: Mon, 29 Mar 1999 08:49:29 +0100 (BST)

**Subject: Contents, MA Journal of Numerical Analysis**

IMA JOURNAL OF NUMERICAL ANALYSIS ---- Volume 19, Number 2.

Gonzalez, O., Higham, D.J. and Stuart, A.M.

Qualitative properties of modified equations.

pp 169-190

Drma\u{c}, Z.

A posteriori computation of the singular vectors in a preconditioned

Jacobi SVD algorithm.

pp 191-213

Daoqi Yang

An iterative pertubation method for saddle point problems.

pp 215-231

Mackenzie, J.

Uniform convergence analysis of an upwind finite-difference approximation of

a convection-diffusion boundary value problem on an adaptive grid.

pp 233-249

Meddahi, S. and M\'arquez, A.

A multidomain discretization method with local mesh refinement.

pp 251-271

Tarvainen, P.

Two-level Schwarz method for unilateral variational inequalities.

pp 273-290

Cai X., Nielsen, B. F., and Tveito, A.

An analysis of a preconditioner for the discretized pressure equation arising

in reservoir simulation.

pp 291-316

Fliege, J. and Maier, U.

The distribution of points on the sphere and corresponding cubature formulae.

pp 317-334

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

From: Oleg Burdakow(OptGuest) <olbur@mai.liu.se>

Date: Sat, 3 Apr 1999 19:16:47 +0200 (MET DST)

**Subject: Contents, Optimization Methods and Software**

Table of Contents

Optimization Methods and Software (OMS)

Volume 10, Number 3 (February, 1998)

Y. Liu, K. L. Teo and S. Ito

A dual parametrization approach to linear-quadratic semi-infinite

programming problems

471-495

M. Laumen

A comparison of numerical methods for optimal shape design problems

497-537

K. Schittkowski

PDEFIT: A FORTRAN code for parameter estimation in partial differential

539-582

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

From: Do Y. Kwak <dykwak@math.kaist.ac.kr>

Date: Tue, 30 Mar 1999 11:09:10 +0000

**Subject: Contents, Journal of the KSIAM**

I would like to submit the contents of Journal of the Korea Society

for Industrial and Applied Mathematics(KSIAM) Vol2. No 2.

pp1-20

Chebyshev pseudospectral-finite element method for two

dimensional unsteady Navier-Stokes equation

Guo Ben-Yu and Hou Jing-Yu

pp21-26

A modified admas predictor-corrector method for differential eqautions

with highly oscillating solutions

Byung Soo Moon

pp27-30

Linear operator wich preserve pairs on which the rank is additive

LeRoy B. Beasley

pp31-40

Spectral analysis for hyperbolics integro-differential equations with a

singular kernel

S. K. Chung and M. G. Park

pp41-48

Substructuring algorithm for structural optimization using the force

method

Ho-Jong Jang

pp49-56

A note on bounds for the estimation error variance of a continuous

stream with stationay variogram

N. S. Barnett and S. S. Dragomir

pp 57-66

On simpson's quadrature formula for differentiable mappings whose

derivatives belong to L_p spaces and applications

Server Silvestru Dragomir

pp 67--80

Singular integral equations and undertermined systems

Seki Kim

pp 81-96

The discrete sloan iterate for Cauchy singular integral equations

Seki Kim

pp 97-110

A heat loss comparison between the two parabolic fin models using two

different numerical methods

K. T. Kim and H. S. Kang

pp111-124

An algorithm performance index of telecommunications network

Yong Yeon Shin, So Yeon Lee and Jai Sang Koh

pp125-135

On monotonicity of entropy

Youngsoo Lee

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

End of NA Digest

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