Subject: NA Digest, Volume 91, Issue 2

From: [email-masked] (Cleve Moler)
Date: Sun, 13 Jan 91 21:16:45 -0500

Comment: Submissions for NA News Digest, mail to [email-masked].
Comment: Information about NA-NET, mail to [email-masked].
Comment: Comments about the NA-NET, mail to [email-masked].

NA Digest   Sunday, January 13, 1991   Volume 91 : Issue 2

Today's Editor: Cleve Moler

Today's Topics:

     Navier-Stokes Code
     Address for Webb Miller
     Errata for Book by Stewart and Sun
     Roundoff Error in Nonlinear Iterative Processes
     Circular Splines
     Lotus "Household marketplace" CD-ROM
     Ninth Parallel Circus
     Special Issue of Journal of Supercomputing
     Some Comments on Visualization '90
     Position at Kent State
     Contents for SIAM Review

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

From: David Ross <[email-masked]>
Date: Mon, 7 Jan 91 13:43:21 -0500
Subject: Navier-Stokes Code

I'm looking for a code that computes steady-state solutions of the
Navier-Stokes equations in 3 dimensions.  The application is
chemical vapor deposition in impinging jet reactors.  Any suggestions?
Thanks.

   David S. Ross, Applied Math & Statistics, Kodak Research Labs,
   Rochester N.Y., 14650-2205, Phone:716-722-0527, Fax:716-724-0663

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

From: Ken Jackson <[email-masked]>
Date: Tue, 8 Jan 1991 13:16:51 -0500
Subject: Address for Webb Miller

If you have an address (electronic or regular) for Webb Miller,
would you please send it to me.

Thanks,
Ken Jackson
[email-masked]

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

From: G. W. Stewart <[email-masked]>
Date: Wed, 9 Jan 91 08:23:16 -0500
Subject: Errata for Book by Stewart and Sun

I am compiling errata for my book with J.-g. Sun "Matrix Perturbation
Theory."  They are available by anonymous ftp from

   thales.cs.umd.edu

Simply get the file errata.dvi from the directory pub.  Be sure to
put ftp in binary mode first.  I would appreciate knowing any
mistakes you have found.  Please email them to [email-masked].
The file will be updated as I receive more errata.

Reminder:  my current technical reports are available by ftp.  The
directory is pub/reports.

Pete Stewart

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

From: Patti Lamm <[email-masked]>
Date: Thu, 10 Jan 91 10:52:12 EST
Subject: Roundoff Error in Nonlinear Iterative Processes

We have a group interested in studying the effect of round-off errors in
iterative processes (particularly nonlinear processes).  We would
appreciate getting recent references and/or texts dealing with questions
similar to those treated in:

 -- Wilkinson, Rounding Errors in Algebraic Processes, early '60's.
 -- Wilkinson, The Algebraic Eigenvalue Problem, '65.

Any other texts dealing in detail with round-off errors in particular
systems would also be of interest.

Please respond to:

    [email-masked].

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

From: Morven Gentleman <[email-masked]>
Date: 11 Jan 91 12:14:22
Subject: Circular Splines

               Circular Splines

I am interested in approximation of planar curves by curves
made up of segments of circular arcs. This form of curve is
of interest because many cutting devices, such as milling
machines or water jets, are (indeed are only) physically
capable of cutting a segment of a circular arc. The interpolation
problem for given data points, the fitting problem for given
data points, and the fitting problem for analytically given
curves (especially planar curves given by parametric splines)
are all of interest.
I am looking for theory, algorithms, and code.  What I have
found so far is very limited.  Even Mehlum, who at the time was
at the Central Institute for Industrial Research in Oslo, Norway,
had a paper "Nonlinear Splines" in "Computer Aided Geometric Design",
ed. R.E. Barnhill, 1974, but the problem he considered is more
general, and the approximation by circular arcs only comes up as
an approximation to the Cornu spirals. Reference is made to a 1969
technical report he wrote which I have not yet located. (I have other
Cornu spiral references, but I am not convinced they are relevant
to my interest.)
I have been looking at approaches similar to what is described in
the October 1990 SIGNUM report of a talk by Joseph Hoschek, Technical
University of Darmstadt, at Computer-Aided Geometrical Design-90.
Choosing two circular arcs that make C1 contact with two skew lines,
and each other, has attractions but leaves a free parameter, the
radius of one of the arcs.  What criterion should dictate its choice?
I would appreciate input, by email to
[email-masked] or [email-masked]
or normal post to
Dr. W. Morven Gentleman, Head,
Software Engineering Laboratory,
National Research Council,
Montreal Road, Bldg. M-50,
Ottawa, Ontario, Canada K1A 0R8

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

From: Steve Campbell <[email-masked]>
Date: Fri, 11 Jan 91 15:55:36 -0500
Subject: Lotus "Household marketplace" CD-ROM

Lotus Development Corp. is bringing out a series of CD-ROMs in March that
will include personal information on 120,000,000 individual Americans,
including an estimate of each person's income!

If you DON'T want to be in Lotus's "First Edition" I suggest you call this
number pronto
                     800-225-5800

and ask Lotus to send you the necessary cards to remove names of each
person in your family. They told me yesterday the cards will take 2 weeks to
arrive and that I won't be on the CD-ROMs if I return them. How considerate
of them.

For general commenting, you can write them at

             Lotus Development Corp.
             Attn.: Market Name Referral Service
             55 Cambridge Parkway
             Cambridge, Mass. 02142
             tel. 617-577-8500

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

From: Omer Egecioglu <[email-masked]>
Date: Mon, 7 Jan 91 13:10:24 PST
Subject: Ninth Parallel Circus

                         FIRST ANNOUNCEMENT
                                of the
                        Ninth Parallel Circus

                 Location: Santa Barbara, California
                       Dates: March 22-23, 1991

     Continuing the  tradition  that  began  at  Yale  in  1986,   the
Department  of Computer  Science and the College of Engineering at the
University of California, Santa Barbara  will  be  hosting  the  Ninth
Parallel  Circus in Santa Barbara on Friday and Saturday, March 22-23,
1991.

     As you know, the Parallel Circus is an informal  meeting  of  the
numerical  analysis  community  with  particular  emphasis on parallel
algorithms for scientific computing.

     This is the second time that the Circus will be held on the  West
coast.  As with the previous Circuses, we hope  to  have  many  atten-
dees from the USA, Canada, and other countries.

     The circus is unique in that it is VERY informal, and thus allows
us  to  talk about the very latest results as well as interesting work
in progress.  In our previous meetings there has been lots of informal
discussion and a very  healthy  mix  of  industrial  and academic par-
ticipants.

     GRADUATE  STUDENTS  ARE  ESPECIALLY  WELCOME.

     We have arranged special conference air  fares  with  United Air-
lines.  To  get  the  special  rate, call them toll free at (800) 521-
4041 from either the USA or Canada. Mention the I.D. number 431-SE and
they  will  give  you  at  least  5% off economy fares for regularly
scheduled domestic flights, and up to 45% off coach for flights  from
Canada and overseas.  Call United for further details.

     We have made arrangements for a block of  discount  rooms at  the
Holiday  Inn,  Goleta,  a few minutes' ride from UCSB campus for March
21, 22, and 23.  The  price is $63 per night for a   single   or   $73
for  a  double  room.   To   get   the discount rate mention "Parallel
Circus" when you call for reservations.  Holiday Inn, 5650 Calle Real,
Goleta, CA 93117.  Phone : (805) 964-6241.

     To register, please send e-mail to Omer Egecioglu  or Mary Olson
at  the  address  below. As usual, there is no registration fee.

     The circus will begin on Friday morning.  Although  there  is  no
prescribed  program,  we  will probably end by  early  Saturday after-
noon.  Participants who give a talk and  leave are generally regarded as
anti-social so you should plan  to attend all of the talks.

     Organizers: Gene Golub, Omer Egecioglu, Mary Olson.

For further information please contact:

     Omer Egecioglu
     Department of Computer Science
     University of California, Santa Barbara
     Santa Barbara, California 93106, USA
     Phone:    (805) 893-3529
     Fax:      (805) 893-8553
     e-mail:   [email-masked]

     or

     Mary Olson
     MSO, Department of Computer Science
     University of California, Santa Barbara
     Santa Barbara, California 93106, USA
     Phone:    (805) 893-4321
     e-mail:   [email-masked]

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

From: Ken Neves <[email-masked]>
Date: Mon, 7 Jan 91 15:53:52 PST
Subject: Special Issue of Journal of Supercomputing

                           CALL FOR PAPERS
                 Special Issue of The Journal of Supercomputing
                                 on
                        Parallel Computing in Action

Papers are being solicited for a special issue of The Journal of Supercom-
puting to be published in early 1992.  We solicit papers that demonstrate
that parallel computing is coming of age and parallel computers have gain-
ed a foothold in the world of serious practical applications in science
and engineering.  In addition to the usual requirements related to the
general quality of papers published in The Journal of Supercomputing, the
following criteria will be used for evaluating and selecting the special
issue papers:

1.  At least eight processors are utilized in the computation.

2.  A commercially available general-purpose parallel computer is used to
    perform the described computation.

3.  The computation is performed on a parallel computer because it reduces
    the turnaround time (i.e., allows for new results in a reasonable time
    frame) and/or is preferred by the virtue of cost performance.  In addi-
    tion to a brief discussion of the economics of using the current par-
    allel version, scalability potential of the used method is included as
    appropriate.

4.  The parallel program is in production use; that is, it has passed the
    development or experimental stage and is now (or was for a period of
    time) receiving regular use in an industrial, government, or research
    setting.  Information related to developing a production code and 
    techniques to achieve an efficient version is included.

5.  The parallel method implemented is comparable in quality to the corres-
    ponding sequential state-of-the-art methods.

We are working with the journal's editors to ensure a timely publication.
It is our hope that this theme issue will not only be rewarding for authors
and readers, but that it might be repeated in coming years to gauge progress
in the field.

Authors should follow The Journal of Supercomputing manuscript format and
submit three copies of a complete manuscript to the guest editors at the
address below.  Submissions must be received no later than June 28, 1991.
Authors will be notified of our publication decision by September 30, 1991.
The deadline for final manuscripts is October 31, 1991.  We are hoping
to have the special issue published by Jan. or Feb. 1992.

Guest Editors:

Dr. Kenneth Neves
Dr. Janusz Kowalik
Dr. David Mizell
Boeing Computer Services
P.O. Box 24346, MS 7L-22
Seattle, WA 98124-0346
Telephone:  (206) 865-3504
            (206) 865-3570
Fax:        (206) 865-2966

E-mail: [email-masked]
        or,  
        [email-masked]

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

From: Gregory Nielson <[email-masked]>
Date: Tue, 8 Jan 91 14:00:56 -0700
Subject: Some Comments on Visualization '90

           SOME COMMENTS ON VISUALIZATION '90
                         by
                  Gregory M. Nielson 
 
     A conference devoted to exploring how visualization is 
being used to extract knowledge from data was held October 
23-25, 1990 in San Francisco.  VISUALIZATION '90 was the 
first full conference to concentrate on the topic of 
visualization.  The conference consisted of tutorials, case studies, 
panels, demonstrations and refereed papers.
     Scientific Visualization (SV) is a relatively new and 
emerging area of science and engineering.  The field of 
scientific computations is advancing tremendously.  
Supercomputers, new hardware architectures, and advanced 
techniques in software are allowing for increased complexity 
of mathematical models and simulations.  This results in a 
closer approximation to reality, which enhances the possibility 
of acquiring new knowledge and understanding.  In addition, 
large collections of numerical values are being produced and 
collected.  Satellites, radio telescopes, geophysical sensors and 
medical scanners are all examples of sources of huge amounts 
of scientific data.  This data contains a great deal of 
information.  The problem is to convey all of this information 
to the scientist so that effective use can be made of the human 
creative and analytic capabilities.  This requires a method of 
communication with a high bandwidth and an effective 
interface.  The human vision system and computer-generated 
images are used in SV.  Images with color, intensity, 
transparency, texture and a myriad of other techniques can, if 
properly prepared and properly interpreted, convey a 
tremendous amount of information in a short period of time.  
SV holds great promise for the future.  The goals are to aid 
scientists and engineers in their efforts to better understand 
the physical world, which ultimately leads to an improved 
world for all.
     After a day of tutorials, the conference began with a 
keynote speech "What is This Thing Visualization" by Gordon 
Bell of Stardent Computer.  This was followed by a panel 
session, "Towards Visualization 2000 - The Next Ten Years."  
This keynote panel brought together four corporate leaders to 
discuss the future of visualization.  Panelists J. Clark, Silicon 
Graphics; Stephen Colley, NCUBE; D. Nagel, Apple Computer and 
J. Poduska, Stardent Computer addressed research, hardware, 
and applications issues whose solutions are critical to future 
progress.  They analyzed key problem areas and made 
predications about future hardware.  Six additional panels 
were scheduled in the following two days.  Their titles give 
some indication of the diversity of the the topics covered:  1) 
Multispectral Visualization; 2) Tools for Visual Data Analysis: 
User Experiences; 3) Human Perception and Visualization; 4) 
Interaction issues in Visualization: Requirements, Techniques 
and Tools; 5) Graphics and Imaging: Trends Toward 
Unification; 6) Making a Picture Fit thee Eye: Human 
Engineering for Computer Graphics.
     Rather than have a continuing vendor display area, a single 
block of time was set aside solely for demonstrations.  
Research organizations and commercial companies presented 
state-of-the-art software and hardware for visualization.
     A case study is intended to deal with the interdisciplinary 
issues of visualization and how to progress from the research 
to the application.  Nine sessions were scheduled.  This unique 
part of the conference covered a variety of application areas 
which are indicated by the titles of these sessions: 1) 
Visualization for Non-Linear Engineering FEM Analysis in 
Manufacturing; 2) Volume Microscopy of Biological Specimens 
Based on Nonconfocal Imaging Techniques; 3) Visualization for 
the Information Age; 4) Factors Inducing Periodic Breathing in 
Humans with Blunted Hypoxic Sensitivity; 5) Interactive 
Investigation of Fluid Mechanics Data Sets; 6) Real-World 
Applications of Visualization Solutions; 7) Personal 
Visualization Systems: Applications in Research and 
Engineering; 8) A Graphical Interface for Robotic Remediation 
of Underground Storage Tanks; 9) Interdisciplinary 
Visualization: Lessons Learned at NCSA.
     The proceeding of the conference includes the 45 refereed 
papers presented at the conference.  These papers represent 
the state of the art in visualization research and applications.  
The authors are from leading research centers, laboratories 
and universities.  These proceedings ( ISBN 0-8186-2083-8) 
can be obtained from IEEE Computer Society Press, P. O. Box 
3014, Los Alamitos, CA, 90720-1264, USA.  In addition to 
these proceedings, a special issue of the journal Computer 
Graphics and Applications will be devoted to this conference.  
The May, 1991 issue of CG&A will include updated and revised 
versions of some of the best and most representative papers 
presented at the conference.  The titles of the papers selected 
for this issue indicate the breadth and scope of the topics 
covered:  1) A Methodology for Choosing Scientific Data 
Visualization; 2) Scattered Multi-dimensional Data: Modelling 
and Visualization; 3) An Interpersonal Multimedia 
Visualization System; 4) Fluid Flow Topology; 5) Visualizing a 
Scalar Field on an N-dimensional Lattice; 6) Interacting with 
Mixed-Media and Virtual Environments.
     Due to the success of VISUALIZATION '90, a sequel 
conference has been scheduled for October, 1991 to be held in 
San Diego.  Look for future announcements.

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

From: Arden Ruttan <ruttan@sunr>
Date: Tue, 8 Jan 91 17:01:26 -0500
Subject: Position at Kent State

                        KENT STATE UNIVERSITY
                  Department of Mathematical Sciences
      Senior Position in Applied Mathematics/Scientific Computation

Applications are invited for a faculty position at the associate or full
professor level beginning Fall Semester 1991 (or earlier).  The ideal 
candidate would have a strong training in classical/modern applied mathematics
and some experience with large-scale scientific computation. He or she would 
be expected to have a solid record of research, publication, and external 
funding, as well as a commitment to quality teaching.  The appointed faculty 
member would be expected to enhance the Department's outreach and 
interdisciplinary research efforts, supervise graduate students, and 
contribute to curricular planning and development.  A competitive salary is 
available.

The Department of Mathematical Sciences at Kent State University comprises
pure and applied mathematics, statistics, computer science, and the Institute
for Computational Mathematics. This new position is intended to complement
existing strengths in applied analysis (especially numerical analysis and
approximation theory) and computer science (especially symbolic computation,
expert systems, and parallel computing).

The infrastructure of the Department is very good: the equipment inventory
includes a significant workstation network plus Wavetracer, Encore, Sequent, 
and Warp parallel-processing computers and a variety of peripherals. The 
University also maintains an IBM 3090 mainframe and a high-performance
(interactive) link to the Cray Y-MP/864 at the Ohio Supercomputer Center in
Columbus, on which computing time is readily available.

Application deadline is February 8, 1991. If the position is not filled 
by February 8, 1991, the deadline will be extended until the position
is filled or until April 26, 1991, whichever occurs first. Applicants should
submit a resume and arrange to have three letters of recommendation sent to

     Arden Ruttan
     Chair, Applied Mathematics Search Committee
     Department of Mathematical Sciences
     Kent State University
     Kent, OH 44242

Kent State University is an Affirmative Action/Equal Opportunity Employer.

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

From: SIAM Publications Department <[email-masked]>
Date: Wed, 9 Jan 91 10:06 EDT
Subject: Contents for SIAM Review

SIAM Review 
 
March 1991, Volume 33, Number 1 

CONTENTS 
 
Articles 

    Inertia-Controlling Methods for General Quadratic Programming 
    P. E. Gill, W. Murray, M. A. Saunders, and M. H. Wright 
     
    Searching for New Mathematics 
    Ivars Peterson 
     
    A Survey of Consistency Properties in Cooperative Game Theory 
    Theo S. H. Driessen 
     
    A Branch-and-Cut Algorithm for the Resolution of Large-Scale
    Symmetric Traveling Salesman Problems 
    Manfred Padberg and Giovanni Rinaldi 
 
Book Reviews 

    The Reimann Problem and Interaction of Waves in Gas Dynamics
    (Tung Chang and Ling Hsiao) W. F. Ames 
    
    Finite Element Methods for Viscous Incompressible Flows: A Guide
    to Theory, Practice, and Algorithms (Max D. Gunzburger) A. J. Baker 
    
    Mathematical Analysis of Nonlinear Dynamic Processes: An Introduction
    to Processes Governed by Partial Differential Equations (K.-U. Grusa)
    M. S. Berger 
    
    An Introduction to Digital Signal Processing (John H. Karl)
    L. L. Campbell 
    
    Combinatorial Search (Martin Aigner) E. Rodney Canfield 
    
    Numerical Solution of Optimal Control Problems with State Constraints
    by Sequential Quadratic Programming in Function Spaces (K. C. P.
    Machielsen) Guanrong Chen 
    
    Partial Differential Equations: Analytical Solution Techniques
    (J. Kevorkian) Susan Cole 
    
    Mathematical Modelling: A Case Study Approach (R. R.  Clements)
    Ellis Cumberbatch 
    
    Elementary Stability and Bifurcation Theory (Gerard Iooss and
    Daniel D. Joseph) E. N. Dancer 
    
    Applied Mathematics: A Contemporary Approach (J. David Logan) Paul Davis 
    
    Mathematical Methods and Models in the Biological Sciences (Martin Eisen) 
    Leah Edelstein-Keshet 
    
    Slope Analysis Using Boundary Elements (Y. S. Jiang) Derek Elsworth 
    
    Stochastic Optimal Control Theory with Application in Self-Tuning Control
    (K. J. Hunt) G. C. Goodwin 
    
    Numerical Methods and Software (David Kahaner, Cleve Moler,
    and Stephen Nash)  Murli M. Gupta 
    
    Retarded Dynamical Systems: Stability and Characteristic Functions
    (G. Stepan) Kenneth B. Hannsgen 
    
    Numerical Simulation and Optimal Control in Plasma Physics: With
    Applications to Tokamaks (Jacques Blum) John L. Johnson 
    
    Mathematical Modeling in Ecology: A Workbook for Students (Clark Jeffries) 
    N. C. Kenkel 
    
    Singular Control Systems (L. Dai) F. L. Lewis 
    
    Stability Analysis of Nonlinear Systems (V. Lakshmikantham, S. Leela, 
    and A. A. Martynyuk) Jean Mawhin 
    
    Multi-Armed Bandit Allocation Indices (J. C. Gittins) Brian P. McCall 
    
    Depth Perception in Frogs and Toads: A Study in Neural Computing
    (Donald House)  John G. Milton 
    
    Infinite-Dimensional Dynamical Systems in Mechanics and Physics
    (Roger Teman) Richard E. Mortensen 
    
    Structural Design Via Optimality Criteria: The Prager Approach to
    Structural Optimization (George I. N. Rozvany) Zenon Mroz 
    
    Nonequilibrium Condensation in High-Speed Gas Flows (Yuri A.  Ryzhov,
    Ul'yan G. Pirumov, and Vladimir N. Gorbunov; V. A. Khokhryakov,
    trans.) J. R. Ockendon 
    
    An Introduction to Hilbert Space and Quantum Logic (David W.  Cohen)
    Andrew Vogt 
    
    Continua with Microstructure (Gianfranco Capriz) William O. Williams 
 
For information regarding SIAM Review, please contact Vickie
Kearn, Publisher, SIAM, 3600 University City Science Center,
Philadelphia, PA  19104-2688; telephone (215) 382-9800; FAX:
(215) 386-7999; e-mail: [email-masked].

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

End of NA Digest
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