NA Digest Sunday, March 19, 1995 Volume 95 : Issue 12

Today's Editor:
Cleve Moler
The MathWorks, Inc.

Submissions for NA Digest:

Mail to

Information about NA-NET:

Mail to

URL for the World Wide Web: -------------------------------------------------------

From: Giovanni Filippo Naldi <>
Date: Mon, 13 Mar 1995 16:27:09 +0100
Subject: Nonlinear Schrodinger Equation

We are concerned with approximating the cubic nonlinear Schrodinger
equation in two dimension. In particular we would like to follow
the evolution of a single soliton solution. The initial datum
(the so called ground state) is the positive solution u of the
following nonlinear equation

-\Delta u + u - u^3 =0

subjected to a fast decay condition at infinity.
The numerical experiments that we have tried for the determination of u
were non successfull due to the instability of such a solution.
We are aware of some results of M. Weinstein, although we were not able to
find them. A shape of the ground state function is given in:
Sulem, Sulem and Patera (Comm. Pure and Appl. Math, Vol. 37, 1984),
but there are not indications for the computation.

Does anybody know about this topic?


Daniele Funaro and Giovanni Naldi
Dipartimento di Matematica, Universita' di Pavia,
via Abbiategrasso 209, 27100 Pavia Italy.


From: Paresh Pattani <>
Date: Mon, 13 Mar 95 9:28:49 CST
Subject: Iterative Solvers

Dear NA-netters:

I would greatly appreciate if you could provide me pointers to public domain
packages which include highly vectorized iterative solvers such as
preconditioned conjugate gradient.

Thanks in advance for your help.

Best regards.

Paresh Pattani


From: Jerzy Wasniewski <>
Date: Thu, 16 Mar 1995 22:41:40 +0100 (MET)
Subject: Iterative Methods for Cache Base System

Is there any work done on "Iterative methods for cache base system".
Could you send me some references.

Jerzy Wasniewski
Fax: + (45)45 930 220


From: Lutz Grosz <>
Date: Wed, 15 Mar 95 11:44:00 MEZ
Subject: VECFEM, VECtorized Finite Element Method

Version 2.0
VECtorized Finite Element Method

designed by the research group for numerical algorithms on supercomputers
at the Computing Center of the University of Karlsruhe

VECFEM is a FORTRAN77 library of subroutines for the solution of systems of
steady or nonsteady nonlinear partial differential equations (PDE). The
domain is an arbitrary 1-dimensional, 2-dimensional or 3-dimensional set. For
the discretization in space direction finite elements are used. The time
direction is discretized by finite differences with variable order and
step size, where the optimal order an step size is independently found. To
check the quality of the calculated solution an error indicator is computed.
For the solution of the resulting large scaled and sparse linear systems
iterative methods of the conjugate gradient type (CG-methods) are used.

For the mesh generation and graphical representation of the solution
interfaces to the pre- and postprocessor programs I-DEAS and PATRAN
are available. The data structures and algorithms are optimal for a
vectorization on a vector computer. Therefore VECFEM is especially
suitable for the solution of large scaled problems.

The licence fee for noncommerical application is 250 DM (=170US$). More
informations are available in WWW on


Lutz Grosz
Universitaet Karlsruhe
Zirkel 2
D-76128 Karlsruhe


From: Danny Hershkowitz <>
Date: Mon, 13 Mar 1995 18:04:48 +0200 (EET)
Subject: News from ILAS Information Center


IIC is happy to announce new services:

I. Links to Electronic journals

II. Links to institutional home pages
so far we have links to
1. American Mathematical Society
2. Mathematics Information Servers (Penn. State Univ.)
3. The World-Wide Web Virtual Library: Math. (Florida State Univ.)
4. Centre for Experimental & Constructive Math. (Simon Fraser Univ.)
5. SIAM's undergraduate WWW pages
6. Journal of Approximation Theory
7. MacTutor History of Mathematics Archives
8. Center for Scientific Computing (Finland)
9. Mathematics Archives - Mathematics Departments
10. Home pages of various mathematics departments
11. NA-NET home page

III. Links to members' home pages
(Those who wish to have links from our database center to their
home page should e-mail their home page address to

There are three ways to use the services of IIC:

MOSAIC, XMOSAIC, NETSCAPE or LYNX - by issuing the command
"command" where command stands for
mosaic, xmosaic, netscape or lynx.

FTP - by anonymous FTP to "" (for the IIC
database change directory to "iic").

E-mail - by including the command
"SEND" (where "filename" is
the file you request) in the mail body of a message sent to .

The list of files that can be obtained from IIC is included in the
file index.html . Detailed instructions as to how to use IIC are
included in the file IIC.GUIDE.


The IIC Database contains information about 166 conferences.


The information available from our paper JOURNALS Section consists of
Contents and further information for:

Linear Algebra and its Applications (LAA):
Linear and Multilinear Algebra (LAMA):
Journal of Numerical Linear Algebra with Applications (JNLAA):
SIAM Journal on Matrix Analysis and Applications (SIMAX):
Mathematics of Control, Signals, and Systems (MCSS):


From: Karen Tuttle <>
Date: Wed, 15 Mar 1995 12:05:50 -0500
Subject: 1995 MATLAB Conference

1995 MATLAB Conference

Every two years The MathWorks hosts a MATLAB Conference for its user
community. Our 1993 Conference was well received and attendance was over
400. The 1995 Conference will be held October 16-18, 1995 at the Hyatt
Regency in Cambridge, Massachusetts.

The Conference is a combination of special sessions, expository talks by
The MathWorks development staff and toolbox authors, user-contributed
papers, and product minicourses. The Conference is focused on providing a
forum for discussion and learning not only on MATLAB, SIMULINK and
toolboxes, but also on the state of research and development in the fields
of mathematics, education and engineering.

This year's Conference will feature special sessions by Cleve Moler, Jack
Little, fuzzy logic expert Lotfi Zadeh, signal processing expert Ron
Schafer, and several industry leaders in the field of control design.

Call for Papers
We are issuing a Call for Papers for the Conference. The process for
acceptance will be more formal for the 1995 Conference than it was for the
1993 Conference and proceedings will be generated for the 1995 MATLAB
Conference. If you are interested in the Call for Papers, send mail to:

For More Information
We have an interactive multimedia diskette that contains details on the
1995 Conference. It is available for PC or Macintosh and also through our
Home Page ( If you would like to receive a disk,
which includes both a registration form and Call for Papers details, please
send your name, shipping address, phone number and choice of PC or
Macintosh to:

Thanks, and we hope to see many of you in October.

Karen Tuttle


From: Alexander Kuznetsov <>
Date: Mon, 13 Mar 1995 15:47:28
Subject: Summer School on Optimization and Identification in Prague

about a summer school on:

Prague, 17-18 July 1995

The school is organised within the framework of the project "Adaptive and
predictive control with physical constraints" (PREDCON) funded by the
Commission of the European Communities (grant CP941174) under COPERNICUS
scheme (Cooperation in Science and Technology with Central and Eastern
European Countries). Its main aims are:
- to give an overview of on-line identification;
- to present new results in the field of identification methods used for
predictor-based self-tuning controllers;
- to introduce current and perspective optimization methods for controller
The proceedings will contain full papers of presented lectures.
Registration fee is 40 GB pounds, including lunches, refreshments and
Institute of Information Theory and Automation, Academy of Sciences of
the Czech Republic.


1. Identification in adaptive control. (J.Bohm -UTIA)
2. Bayesian Structure Estimation: State and Progress (M. Karny- UTIA)
3. Simultaneous estimation of models with different order (D.Clarke - OU)
4. Identification of distributed parameter systems. (B. Rohal - STU)
5. Optimization in constrained predictive control. (A.Kuznetsov - OU)
6. Direct search optimization. (A.Rykov -- MISIS)
7. Adaptive and Predictive Control of Lumped Input and Distributed
Output Systems. (G. Hulko -- STU)
8. Problem formulations in multiobjective optimization.(A.Rykov --MISIS)
9. Methods for solving problems of multiobjective optimization.(A.Rykov
10. Regularization methods --- introduction. (T.Hruz -- STU)
11. Regularization methods in identification. (J. Kadlec --UTIA)
12. Applications: (STU, RB, UTIA)
-- information about selected practical applications
-- demonstration on laboratory models
-- exhibition of software
13. Discussion.

PREDCON participating institutions:
OU -- Oxford University, Department of Engineering Science (United Kingdom)

UTIA -- Institute of Information Theory and Automation (Czech Republic)
STU -- Slovak Technical University, Faculty of Mechanical Engineering
MISIS -- Moscow Institute for Steel and Alloys (Russia)
RB -- RB Ltd. company (Slovakia)

Registration and additional information at:
Josef Bohm,
Institute of Information Theory and Automation, AV CR
Pod vodarenskou vezi 4,
182 08 Prague 8,
Czech Republic

tel. 42-2-66052337,
fax. 42-2-66414903,
E--mail :

The deadline for application (and reservation) is the May, 5.
The registration fee after the deadline could be higher.

E-mail communication should be preferred


From: Jerzy Wasniewski <>
Date: Tue, 14 Mar 1995 18:41:58 +0100 (MET)
Subject: PARA95, Workshop on Applied Parallel Computing


Organized by:
UNI*C (The Danish Computing Centre for Research and Education) and
IMM (The Institute for Mathematical Modelling of the Technical
University of Denmark) in collaboration with
Professor Jack Dongarra from the University of Tennessee and Oak
Ridge National Laboratory.

Dates: August 21, 1995 - Tutorial: ScaLAPACK and Parallel NAG Library
on IBM SP2 and SGI Power Challenge
in Multiprocessing Environment
August 22 - 24, 1994 - Workshop sessions

Place: UNI*C, The Danish Computing Centre for Research and Education,
The Technical University of Denmark, 2800 Lyngby, DENMARK

The PARA95 workshop information (program, hotel details, maps, etc)
successively will be available by anonymous ftp:
ftp (or
<your email address>
cd uni-c/unijw/para95

Some of the PARA95 information is also distributed by the mailing
To subscribe send a message to
sub para95-l yourname

For more PARA95 information contact:
PARA95, UNI*C, DTU, Bldg. 304
2800 Lyngby, Denmark
Attn: Jerzy Wasniewski
Email: Fax: (+45) 45 93 02 20
Tel: (+45) 45 88 39 99 after the tone 2426


From: Robert Gallagher <Robert_Gallagher@MTS.RPI.EDU>
Date: Wed, 15 Mar 95 16:21:34 EST
Subject: IBM High Performance Computing Conference

IBM High Performance Computing

SUPER! 95, the eighth annual conference for users of IBM-based high
performance computing systems, will be hosted by the University of
Arizona in Tucson, Arizona.

Reserve April 23 - 26, 1995 to attend this excellent technical
program and enjoy the wonderful weather and cuisine of the great

Attendees are people who use or manage high performance computing
facilities. This includes faculty, research scientists, technical
and user support staff, computing center managers, and others
interested in IBM's newest high performance computing technology.

Some of the topics and speakers include:

* "The Impact of Impacts in the Solar System"
Professor Willy Benz, University of Arizona

* "What's in a Name? NII and NREN"
Stephen Wolff (former Director of the Network Programs, National Science
Foundation), Cisco Systems, Inc.

* "High Performance Computing in Diagnostic and Therapeutic Radiology"
Professor Timothy Solberg, University of California at Los Angeles

* "Interactive Access to Massive Social Science Data Sets"
Professor Albert Anderson, University of Michigan

* "IBM Directions in High Performance Computing"
Irving Wladawsky-Berger, General Manager, POWER Parallel Division, IBM

* "Configuring and Managing Large SP2 Parallel Environments"
Douglas Carlson, Cornell Theory Center, and John Sobolewski,
Maui HPC Center and University of New Mexico

* "A High-Altitude View of the Computational Trends in the Automotive Industry"
Myron Ginsberg, EDS/General Motors

One of the highlights of SUPER! is the Open Forum. This is when the
attendees "get the floor" for 90 minutes to interact with a panel of
the IBM managers responsible for the POWER Parallel Division,
RS/6000 development, AIX development, and POWER parallel application
software development about issues and concerns, new directions, or
anything attendees wish to ask. Last year the IBM panelists were
very open and forthcoming! Many of the same panelists will return
this year. The complete program and information about registration
is on the SUPER!95 World Wide Web server at the address below.

For more information, contact:

Research Computing Group
Center for Computing and Information Technology
The University of Arizona
Tucson, AZ 85721

phone: (602) 621-4245
fax: (602) 621-8668

WWW/Mosaic, Lynx: URL-HTTP://


From: H. T. Tran <>
Date: Thu, 16 Mar 95 12:27:16 EST
Subject: Industrial Mathematics Modeling Workshop

Announcing the

August 7 - 16, 1995

Center for Research in Scientific Computation
North Carolina State University
Raleigh, North Carolina

The Industrial Mathematics Modeling Workshop for Graduate Students,
which is the fourth in the series, will take place at the Center for
Research in Scientific Computation at North Carolina State University
in Raleigh, North Carolina, 7-16 August 1995. This workshop is being
held annually, the previous highly successful meetings was held at the
University of Minnesota in 1992 and at the Claremont Colleges in 1993
and 1994. A description of the 1993 Claremont workshop can be found in
SIAM NEWS, November, 1993 issue.
In line with the previous workshops the goals of this workshop are:
* to expose 30 graduate students in mathematics and
statistics to the challenging and exciting real-world
problems from industry and government laboratories;
* to introduce students to the team approach to problem
Funding for this workshop has been requested with the National Security
Agency and the Army Research Office. Additional support is anticipated
from the Center for Research in Scientific Computation.

In the workshop the students will be divided into six teams to work
on "industrial mathematics" problems brought on by experienced applied
mathematicians. These problems are challenging, real-world problems
from industry or applied science and require fresh, new insight for
their formulation and solution. The problem presenters, primarily
from industry and government laboratories, are being recruited and
their names will be announced subsequently.

Graduate students in mathematics, applied mathematics, statistics or
operations research can be nominated for this program by a faculty
member by sending a letter of recommendation. In addition, the
student is required to send in a copy of a recent transcript. THE
DEADLINE FOR APPLICATION IS JUNE, 30. Students will be expected to
finance their travel. The workshop will cover local living expenses
for U.S. citizens and permanent residents.


Ben Fitzpatrick (Center for Research in Scientific Computation)
Hien T. Tran (Center for Research in Scientific Computation)

Submit your complete applications or any inquiries you may have
concerning this workshop to:

Hien T. Tran
Center For Research in Scientific Computation
Box 8205
North Carolina State University
Raleigh, NC 27695-8205
Telephone: (919) 515-3265
Fax: (919) 515-3798


From: Ian Gladwell <H5NR1001@VM.CIS.SMU.EDU>
Date: Thu, 16 Mar 95 15:45:16 CST
Subject: Method of Lines Workshop


A Workshop on the Method of Lines for Time-Dependent Problems will be held
at the University of Kentucky in Lexington, Kentucky, from Wednesday, May
31 1995 until Saturday, June 3 1995. Total attendance at the conference
will be limited to sixty participants.

The invited speakers are: Martin Berzins (Leeds), Kevin Burrage
(Queensland), George Byrne (Illinois Institute of Technology), Joe
Flaherty (Rensselaer Polytechnic Institute), Mac Hyman (Los Alamos), Ken
Jackson (Toronto), Ohannes Karakashian (Tennessee), Linda Petzold
(Minnesota), Bob Russell (Simon Fraser), Bill Schiesser (Lehigh), Skip
Thompson (Radford), Jan Verwer (CWI, Amsterdam).

Participants will have the opportunity to propose a presentation on a
topic associated with the method of lines for time-dependent partial
differential equations or with aspects of the (parallel) solution of
ordinary differential equations which may have implications for the method
of lines for time-dependent problems. Presentations on applications of the
Method of Lines will be welcomed. Some discussion panels will also be

There will be a refereed conference proceedings published in a special
issue of Applied Numerical Mathematics. Presenters of invited and
contributed papers will be encouraged to submit papers for the

Further details may be obtained by e-mailing

The workshop is supported by the National Science Foundation, the
Institute for Mathematics and its Applications, the Center for
Computational Sciences of the University of Kentucky, Dedman College of
Southern Methodist University, and the Colorado School of Mines.

== Graeme Fairweather and Ian Gladwell


From: Chris Bischof <>
Date: Fri, 17 Mar 1995 08:38:49 -0600
Subject: Postdoc Position at Argonne National Laboratory


Argonne National Laboratory has openings for postdoctoral research positions
in the Mathematics and Computer Science Division and invites outstanding
candidates to apply. One position is expected to be on assignment at the
Supercomputing Research Center in Bowie, Maryland. Candidates should have a
Ph.D. in applied mathematics, computer science, computational chemistry or
a related discipline and comprehensive knowledge in numerical linear algebra
and parallel computing.

The successful candidate will participate in the development of algorithms
and software tools for large-scale dense eigenvalue and orthogonal
reduction problems under the umbrella of the PRISM (Parallel Research in
Invariant Subspace Methods) project. Information on the PRISM project
can be found in pub/prism on This project is interdisciplinary
in nature and interfaces with efforts in computational chemistry.

The Mathematics and Computer Science Division supports an excellent
computational environment that includes access to high-performance scientific
workstations, a scientific visualization and virtually reality laboratory,
and state-of-the-art parallel computers.

Argonne is located in the southwestern Chicago suburbs, offering
the advantages of affordable housing and good schools, as well as
easy access to the cultural attractions of the city.

Applicants must have received their Ph.D. not more than three years prior
to the beginning of the appointment. The appointment is available immediately
and for a one-year term (renewable). Applications should be addressed to
Walter McFall, Box mcs-postdoc9, Employment and Placement, Argonne National
Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439, and
must include a resume' and the names and addresses of three references.
For additional information, contact Chris Bischof (

Argonne is an affirmative action/equal opportunity employer.


From: Grant Guevremont <grantg@CERCA.UMontreal.CA>
Date: Fri, 17 Mar 1995 18:02:18 -0500
Subject: Contents, Computational Fluid Dynamics


Vol. 3, No. 1, 1994

A Least Squares Finite Element Method for Doubly-Diffusive
L. Q. Tang and T. T. H. Tsang

Finite Element Method for Two-Layer Tidal Current Analysis
With an Open Boundary Condition
T. Kodama and M. Kawahara

Analysis/Design Calculations of Transonic Flows
Z. Q. Zhu, J. C. Su and B. Y. Chen


Finite Diffeence Techniques Applied to the Simulation of
Surges and Currents Around Sri Lanka and Southern Indian
A. D. Rao, S. K. Dube and P. Chittibabu

Vol. 3, No. 2, 1994

Adaptive Remeshing for Hyperbolic Transport Problems
D. Pelletier, A. Zaki and A. Fortin

Parallelization of Inviscid and Viscous Flow Solvers
D. Drikakis and F. Durst

Finite Difference Simulation of a Stratified
Two-Phase System
C. Tsai and T. Liu


Flux Limited Non-Oscillatory CUD-3 Schemes for 1-D
Euler Equations
K. S. Ravichandran


Grant Guevremont
CERCA Tel. (514) 369-5273
email :


From: R. Baker Kearfott <>
Date: Mon, 13 Mar 1995 10:09:35 -0600
Subject: Contents, Interval Computations

Interval Computations. - 1994. - N 2. - 132 p.


>From the Editor 2
>From the Editor (in Russian) 4

Mathematical Research

S. P. Shary
Solving the Tolerance Problem
for Interval Linear Systems 6

N. S. Dimitrova and S. M. Markov
On Validated Newton Type Method
for Nonlinear Equations 27

V. A. Podchukayev and I. M. Svetlov
An Analytical Method of Constructing
Hurwitz Interval Polynomials 52

Applications and Studies of Related Disciplines

M. Berz and G. Hoffstaetter
Exact Bounds on the Long Term Stability
of Weakly Nonlinear Systems Applied to the
Design of Large Storage Rings 68

V. Kreinovich, T. Swenson, and A. Elentukh
Interval Approach to Testing Software 90


1st All-Russian Conference on Countinuous Logic
and Its Applications 110

1st All-Russian Conference on Countinuous Logic
and Its Applications (in Russian) 110


Bibliography of Soviet Works on Interval Computations.
Part VI 116

Requirements for manuscript preparation 127

Requirements for manuscript preparation (in Russian) 128

Addresses of the editorial board members 129

Contents 131

Interval Computations. - 1994. - N 3. - 128 p.

Parallel Algorithms for Interval Computations


Foreword by the Invited Editors of the Special Issue 2

Foreword by the Invited Editors of the Special Issue (in Russian) 4

V. Kreinovich and A. Bernat
Parallel Algorithms for Interval Computations:
An Introduction 6

E. Lyager
Finding Local Extremal Points by Using Parallel
Interval Methods 63

K. Madsen and O. Toft
A Parallel Method for Linear Interval Equations 81

M. Plum
Enclosures for Solutions of Parameter-Dependent
Nonlinear Elliptic Boundary Value Problems:
Theory and Implementation on a Parallel Computer 106

Requirements for manuscript preparation 122

Requirements for manuscript preparation (in Russian) 123

Addresses of the editorial board members 124

Contents 126


Interval Computations. - 1994. - N 4. - 128 p.

Proceedings of SCAN-93


Foreword by Prof. H. Stetter 2

Foreword by Prof. H. Stetter (in Russian) 3

S. Christiansen
Interval Methods and Condition Numbers
of Linear Algebraic Systems 4

M. Daumas and D. W. Matula
Rounding of Floating Point Intervals 28

M. Daumas, Ch. Mazenc, and J.-M. Muller
Towards a User Transparent Interval Arithmetic 46

M. T. Nakao
Numerical Verifications of Solutions
for Nonlinear Hyperbolic Equations 64

W. Luther and W. Otten
Computation of Standard Interval Functions
in Multiple-Precision Interval Arithmetic 78

E. D. Popova
Extended Interval Arithmetic
in IEEE Floating-Point Environment 100

Addresses of the editorial board members 130

Contents 132


From: Heinz W. Engl <>
Date: Tue, 14 Mar 1995 09:26:40 EST
Subject: Contents, Surveys on Mathematics for Industry

Surveys on Mathematics for Industry
(Springer-Verlag Vienna/New York)
Table of Contents, Vol4. No.4

H.Guillard, M.Mallet, J.Periaux (Guest Editors of this Volume), Numerical
Tools for Scientific Computation with Applications to Flow, Turbulence and

P.George, Automatic Mesh Generator Using the Delaunay Voronoi Principle

E.Hirschel, W.Schwarz, Mesh Generation for Aerospace CFD Applications

O.Jacquotte, F.Montigny, G.Coussement, Generation, Optimization, and
Adaption of Multiblock Structured Grids for Complex Configurations

T.Hughes, K.Jansen, A Stabilized Finite Element Formulation for the
Reynolds-Averaged Navier-Stokes Equations

P.Gervasio, A.Quarteroni, L.Valdettaro, Effective Algorithms for Spectral
Methods with Applications

K.Papailiou, Selected Contributions to the Field of CFD by the Thermal
Turbomachinery Laboratory

J.Hanson, Visulaization Techniques for Turbulence in CFD

== Heinz W.Engl, Managing Editor


End of NA Digest