## NA Digest Sunday, January 30, 2000 Volume 00 : Issue 05

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

### Submissions for NA Digest:

Mail to na.digest@na-net.ornl.gov.

### Information about NA-NET:

Mail to na.help@na-net.ornl.gov.

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

From: Lars Elden <laeld@mai.liu.se>
Date: Fri, 28 Jan 2000 08:34:34 +0100 (MET)
Subject: Ake Bjorck Honored

In December 1999 Ake Bjorck turned 65. On Jan 21, 2000 the mathematics
department at Linkoping University organized a conference to honor Ake
and celebrate his contributions and leadership in numerical
analysis. The theme of the conference was "Thirty years of numerical
linear algebra in Sweden", and the speakers were L. Elde'n,
T. Elfving, G. Dahlquist, O. Axelsson, B. Kagstrom, A. Ruhe, J-g. Sun,
and P-A Wedin.

65 is the retirement age in Sweden. I know that Ake will not stop
working, but instead he will continue to devote his time to what he
loves: research in numerical linear algebra and editorial work for BIT
and other journals.

For a photo of Ake at the conference dinner see
http://www.math.liu.se/Num/bjorckconf/foto/pages/50_IMG_jpg.htm

The conference program and more photos can be found via
http://www.math.liu.se/Num/bjorckconf/
(the program is in English and the link to the photos is just below).

CONGRATULATIONS AKE!

Lars Elde'n

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

From: Andrew Knyazev <andrew.knyazev@cudenver.edu>
Date: Sun, 23 Jan 2000 14:34:09 -0700
Subject: Happy Birthday Vyacheslav Lebedev

Vyacheslav I. Lebedev celebrates his 70th birthday on Jan. 27, 2000.

V.I. Lebedev is an author of other a hundred papers and several books
on different subjects, e.g., on: quadratures, parallel algorithms,
difference schemes for solving stiff systems of ODEs and PDEs,
Chebyshev iterative methods, composition methods, Poincare-Steklov
operators, and Schwartz algorithms, numerical methods in the theory
of neutron transport, and finite-difference methods and discrete
gradient and divergence operators.

V.I. Lebedev continues to work at the
Inst. of Numerical Mathematics
Gubkina street, 8, Moscow, Russia, 117951
7-(095)-938-1821 (fax), nucrect@inm.ras.ru (email)

On behalf of a group of his former Ph.D. students,
it is a pleasure to wish him all the best.
Happy Birthday Vyacheslav Ivanovich!

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

From: Hugo Scolnik <scolnik@fd.com.ar>
Date: Mon, 24 Jan 2000 14:46:09 -0300
Subject: Looking for BICG Code

I am looking for a self-contained Fortran code implementing BICG (that is, a
code which does not require from the end-user to supply a preconditioner, etc).
Any help will be welcomed !
Thanks

Hugo Scolnik
Department of Computer Science
University of Buenos Aires

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

From: Gassan Abdoulaev <abdoulaev@recon2.hscbklyn.edu>
Date: Mon, 24 Jan 2000 15:08:38 -0800
Subject: Change of Address for Gassan Abdoulaev

Dear collegues,
I have take a position in the State University of New York,
the laboratory of optical tomography.
My new address is:

Gassan Abdoulaev phone: (718)270 4561
SUNY-Downstate Medical Center fax: (718)270 3313
Dept. of Pathology, Box 25 email: gabdoulaev@netmail.hscbklyn.edu
450 Clarkson Ave. abdoulaev@recon2.hscbklyn.edu
Brooklyn, NY 11203, USA WWW(old): http://www.crs4.it/~gassan/

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

From: W. Kahan <wkahan@CS.Berkeley.EDU>
Date: Mon, 24 Jan 2000 20:03:59 -0800 (PST)
Subject: Triangles' Areas and Tetrahedrons' Volumes

In NA Digest V.00 #01 (2 Jan. 2000), Joel Malard <JM.Malard@pnl.gov>
asks for a more "robust" formula than his to compute the area A(x,y,z)
of a triangle given its edge-lengths x, y, z . Factor his formula to
obtain a formula attributed by early Arab scholars to Archimedes
(287-212 BC) but associated still with Heron of Alexandria (around
100 AD): A(x,y,z) := Sqrt( (x+y+z)(x-y+z)(y-z+x)(z-x+y) )/4 . For a
well-formed triangle all three "Facial Differences" like x-y+z must
be positive. Just this formula for A(x,y,z) is numerically robust in
all floating-point arithmetics nowadays, except Cray's X-MP to J90
series and other machines' software-simulated doubled-double precision,
provided each facial difference like x-y+z is computed from an
expression like (max{x,z} - y) + min{x,z} . For more details see my
"Miscalculating Area and Angles of a Needle-Like Triangle" posted on
cs.berkeley.edu/~wkahan/Triangle.pdf . Note that the formula A(x,y,z)
is inappropriate if the triangle's edge-lengths must first be computed
from its vertices' coordinates; in such a case formulas involving dot-
and cross-products work better provided extra precision is carried,
but this is a story for another day. Some details appear in pp. 48-55
and 58-63 of Joe Darcy's and my "How Java's Floating-Point Hurts
Everyone Everywhere" posted on cs.berkeley.edu/~wkahan/JAVAhurt.pdf .

Also Malard "would like to compute the volume of a tetrahedron from
the areas of its facets". But by themselves the four facets' areas do
not determine the volume except to impose bounds upon it. Neither does
much help come from classical formulas like one attributed 1500 years
ago to Liu Hui in China: The volume of a tetrahedron is one third
the product of the distance between any two opposite edges (perhaps
extended) and the area of a triangle two of whose edges are parallel
translated copies of those opposite edges. Analogous to Malard's
A(x,y,z) = Sqrt( (2xy)^2 + (2yz)^2 + (2zx)^2 - (x^2 + y^2 + z^2)^2 )/4
= Sqrt( 2(xy)^2 + 2(yz)^2 + 2(zx)^2 - x^4 - y^4 - z^4 )/4
are non-robust formulas for the volume of a tetrahedron in terms solely
of the squares of its six edge-lengths:

VOL = Sqrt( u^2 U^2 ( v^2 + V^2 + w^2 + W^2 - u^2 - U^2 ) +
+ v^2 V^2 ( w^2 + W^2 + u^2 + U^2 - v^2 - V^2 ) +
+ w^2 W^2 ( u^2 + U^2 + v^2 + V^2 - u^2 - U^2 ) -
- U^2 V^2 W^2 - U^2 v^2 w^2 - u^2 V^2 w^2 - u^2 v^2 W^2 )/12 .

Here u, v, w are the lengths of the three edges adjacent to a vertex,
and the respective opposite edges have lengths U, V and W . All
twelve of the facial differences u-V+w, U-V+W, ... (of which at most
six are linearly independent) must be positive; though necessary this
condition is insufficient to ensure the tetrahedron's solidity, so no
formula for its volume in terms of sums and products of edge-lengths
and facial differences _ without other subtractions _ can exist.

Since the squared volume is quadratic in each squared length separately
it can be factored in ways that attenuate but do not eliminate losses
due to numerical cancellation. Here is an example: Compute in turn
p := (w-u)(w+u) + (W-U)(W+U) = (w-U)(w+U) + (W-u)(W+u) ; (choose one)
q := (2vV - p)(2vV + p) ;
a := 4A(u,v,W) ; d := 4A(U,v,w) ; (use the robust formula for 4A )
r := ( q - (a-d)^2 )( (a+d)^2 - q ) ;
VOL := Sqrt(r)/(48v) if both factors of q and of r are positive;
otherwise the tetrahedron is degenerate or unreal.

There is a formula for the tetrahedron's volume that involves all four
facet's areas: First form the product of all eight expressions
A(U,V,W) +/- A(U,v,w) +/- A(u,V,w) +/- A(u,v,W)
and then divide it by a polynomial of degree ten homogeneous in u, v,
w, U, V, W and unchanged by the 24 permutations of the tetrahedron's
four vertices; the quotient is the volume's square. The explicit
expression I have for that polynomial is not a good way to compute it.

Still the volume of a nearly flattened tetrahedron remains difficult to
compute as accurately as is deserved without the use of extra precision
so far as I know. The problem may be difficult because the formula for
VOL does not factor into sufficiently simple factors.

Prof. W. Kahan <wkahan@cs.berkeley.edu>
Math. Dept., and E.E. & Comp. Sci. Dept. #1776
University of California
Berkeley CA 94720-1776

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

From: E. F. Toro <e.f.toro@numeritek.com>
Date: Wed, 26 Jan 2000 21:50:21 +0000
Subject: Numerical Software Released

NUMERICA,

A Library of Source Codes for
Teaching, Research and Applications

NUMERICA is a new library of source computer programs for solving
numerically partial differential equations and other mathematical
problems.

All the NUMERICA sub-libraries are written and maintained by
specialists of world reputation in their fields and are based
on authoritative textbooks and other substantial publications.

NUMERICA is intended primarily for Research Students, Research
Supervisors, Academics and Research Scientists in Academe, Industry
Research Laboratories and Consultancy Organisations.

Benefits offered by NUMERICA include:

(a) Quick and cost-effective start of projects
(b) Sound documentation and support
(c) Complete control over development of projects
(d) Continuity, improvement and expansion of software

Sub-Libraries of NUMERICA

HYPER-LIN. A set of 20 source programs for solving model hyperbolic
conservations laws using a wide variety of modern shock-capturing
methods. Suitable for teaching and learning. Available now.

HYPER-EUL. A set of 20 source programs for solving the non-linear
time-dependent Euler equations in one, two and three-dimensional
Cartesian and non-Cartesian domains using modern high-resolution
shock-capturing methods of the Godunov and centred type.
Available now.

HYPER-WAT. A set of 20 source programs for solving the non-linear
time-dependent shallow water equations in one and two dimensional
domains, using a wide variety of modern shock-capturing methods of
the Godunov and centred type. Due in June 2000.

GRID-GEN. A set of source programs for the generation of structured and
unstructured meshes for two and three-dimensional domains. More details
soon to be released. In preparation.

Future Extensions of NUMERICA

NUMERICA will be maintained, regularly upgraded and extended to include
new sub-libraries written by other world experts, thus embracing a wider
range of problems, methods and potential applications.

NUMERICA is published and distributed by Numeritek Limited, UK.
Website http://www.numeritek.com. Email: numerica@numeritek.com
Distributed in Japan by SofTek Systems Inc.

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

From: Lynette Mitchell <mitchelll@crop.cri.nz>
Date: Fri, 14 Jan 2000 10:05:00 +1300
Subject: Conference on Complex Systems

COMPLEX SYSTEMS 2000
The Fifth International Conference on Complex Systems

Conference Announcement and Call for Papers

Date: 19-22 November 2000, 3-4 days
Place: Otago University, Dunedin, New Zealand

Theme: Applied Complexity - From Neural Nets to Agricultural Soils, and
all that lies in between.

For registration, paper submission and detailed information, please visit:

http://www.crop.cri.nz/complex2000=20

Important deadlines: Paper submissions by 31 May 2000

Aim: Much of complexity work to date has dealt with abstract modeling, wh=
ile people who most deal with real complex systems (ecology to economics)=
are virtually unaware of progress. The conference will bring together th=
e abstract with the realistic and show advances in complex system theory =
and modeling which have been applied to real world situations or hope to =
be heading that way.

Background: "Applied Complexity" is the fifth of a series of conferences =
on Complex Systems in Australasia and the first in New Zealand. The first=
conference (From Biology to Computation) was held at the Australian Nati=
onal University, Canberra, in 1992. Subsequent conferences were held at t=
he University of Central Queensland, Rockhampton, 1994 (Mechanisms of Ada=
ptation); at Charles Sturt University, Albury, 1996 (From Local Interacti=
ons to Global Phenomena); and at University of New South Wales, Sydney, 1=
998 (Complexity Between the Ecos - From Ecology to Economics). "Applied C=
omplexity" expands the international tradition of these conferences and e=
xpects a wide participation from around the world.

Audience, disciplinary interests: Complex systems cross boundaries betwee=
n disciplines, thus we expect to elicit interest in disciplines ranging a=
cross mathematics, computing, physics, chemistry, climatology, biology, p=
sychology, neural sciences, information sciences, social sciences, anthro=
pology, ethnobiology, economics, modeling, conservation, and management t=
o cite only a few at a broad level. However, to maintain a clear focus, p=
aper presented must deal explicitly with issues within those fields that =
suggest the extraction of broad rules which may be applicable across comp=
lex systems of a different nature.

This conference is for you if:
You work in real-life complex systems (e.g. agriculture, economy, psychol=
ogy, conservation, social studies, history) and wonder whether there coul=
d be more holistic approaches to scientifically comprehend them.
You have heard of chaos theory, complexity, catastrophe theory, artificia=
l life, artificial intelligence, self-organization, etc. and believe they=
are applicable to your problem but don't know the right people to establ=
ish a working relationship
You work with computer simulations of complex systems (e.g. genetic algor=
ithms, information science, fitness landscapes, ecological and agricultur=
al modeling, etc.) but wonder how this will ever be connected to real-lif=
e complex systems

Complex Systems 2000 brings these strands together in a meeting which enc=
ourages the initiation of important collaborative research, as well as up=
dating the most research advances in the field.

We look forward to seeing you in Dunedin!

Lynette Mitchell
Crop & Food Research
Ph: 64 3 489 0673
Fax: 64 3 489 0674

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

From: Andreas Wiegner <Andreas.Wiegner@FernUni-Hagen.de>
Date: Mon, 24 Jan 2000 14:13:02 +0100
Subject: Workshop on Accurate Solution of Eigenvalue Problems

III INTERNATIONAL WORKSHOP ON ACCURATE SOLUTION OF EIGENVALUE PROBLEMS

In cooperation with the Society for Industrial and Applied
Mathematics (SIAM) and the SIAM Activity Group on Linear Algebra

July 3-6, 2000
FernUniversit=E4t Hagen
Arcadeon Conference Center, Hagen, Germany

SECOND ANNOUNCEMENT AND CALL FOR PAPERS

Organizing Committee:

- Jesse Barlow, The Pennsylvania State University
- Ivan Slapnicar, University of Split
- Kresimir Veselic (manager), Fernuniversit=E4t Hagen

The purpose of this workshop is to bring together experts on accuracy
issues in the numerical solution of eigenvalue problems for four days
of research presentations and discussions. This is the third such
workshop. The first, titled "International Workshop on Accurate
Eigensolving and Applications", was held in Split, Croatia on July 11-
17, 1996, the second, "International Workshop on Accurate Solution of
Eigenvalue Problems, was held at the Pennsylvania State University on
July 20-23, 1998. There will be no parallel sessions; research
presentations will be 30 minutes to one hour each, with sufficient
time for discussions. Specially titled discussion/working groups and
a poster session will also be organized. Current informations are
found under

http://www.fernuni-hagen.de/MATHPHYS/veselic/2announcement.html

Tentative invited speakers:

Beresford Parlett, University of California at Berkeley;
James Demmel, University of California at Berkeley;
Ilse Ipsen, North Carolina State University;
Zlatko Drmac, University of Zagreb;
Axel Ruhe, Chalmers Institute of Technology, G=F6teborg;
Chris Beattie, Virginia Tech Blacksburg;
Nick Higham, University of Manchester;
S. K. Godunov, University of Novosibirsk;
Andrew Knyazev, University of Colorado at Denver;
Ming Gu, University of California, Los Angeles;
Hongyuan Zha, The Pennsylvania State University.

In addition to research contributions we will have a limited
number of tutorial talks.

We ask all tentative participants to SEND AN APPLICATION to the
managing organizer per e-mail or ordinary mail (the addresses are
below). The application should contain

- Name, affiliation
- Address (mailing, phone, email, ...)
- Title and abstract of their possible presentation - if any.

With invited speakers the application will merely be interpreted as
their FINAL AGREEMENT TO PARTICIPATE AND TALK. Other contributions
will be subject to an internal refereeing process. The qualification
will be judged by (i) its research ranking, (ii) its fitting in the
field of the Workshop. Note that we also welcome NON_SPEAKING
PARTICIPANTS as we are planning special time for discussion groups.
Should the quantity of highly qualified contributions be larger than
the disposable schedule, we will organize a POSTER SESSION to cover
the demands.

The DEADLINE for applications is the 30th of April 2000.

For further information contact the managing organizer

Prof. Kresimir Veselic
Fernuniversit=E4t Hagen
LG Mathematische Physik
P.O. Box 940
D-58084 Hagen
Germany

phone ++2331-9872721
email:iwasep3@Fernuni-Hagen.de

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

From: Marcin Paprzycki <marcin@orca.st.usm.edu>
Date: Mon, 24 Jan 2000 21:34:46 -0600 (CST)
Subject: Conference on Distributed Systems

SECOND ANNOUNCEMENT AND CALL FOR PAPERS
An International Conference on
DISTRIBUTED SYSTEMS:
OPTIMIZATION AND ECONOMIC ENVIRONMENTAL APPLICATIONS
Ekaterinburg, Russia
30 May - 2 June, 2000

ORGANIZED BY:
Ural Branch of Russian Academy of Sciences
Institute of Mathematics and Mechanics (Ekaterinburg)
Ural State Technical University (Ekaterinburg)
Steklov Mathematical Institute (Moscow)

SPONSORED BY: IFIP, IIASA, Finance Group "Severnaya Kazna"

SCOPE:

- Dynamics and control of systems with distributed parameters.
- Theory and methods of mathematical programming.
- Inverse problems for distributed and high-dimensional systems.
- Distributed systems in economic and financial areas.
- Distributed systems in geophysics and environment.
- Parallel computations and optimization.

INTERNATIONAL PROGRAM COMMITTEE:

G.I.Marchuk, Russia (Chair) J. Korbickz, Poland
I. Lasiecka, USA (Co-Chair) A.B. Kurzhanskii, Russia
H. Akca, Turkey N. Mastorakis, Greece
V. Barbu, Romania B. Mordukhovich, USA
F.L. Chernousko, Russia L. Pandolfi, Italy
I.I. Eremin, Russia M. Paprzycki, USA
Yu.M. Ermoliev, Ukraine S. Saitoh, Japan
K.-H. Hoffmann, Germany F. Troltzsch, Germany
F. Kappel, Austria V.V. Vasin, Russia

NATIONAL ORGANIZING COMMITTEE:

I.I. Eremin (Chair) V.I. Maksimov (Co-Chair)
V.N. Frolov O.I. Nikonov
N.L. Grigorenko M.S. Nikolskii
G.F. Kornilova V.D. Skarin
A.V. Kryazhimskii (Co-Chair) B.V. Digas (Secretariat)

MORE DETAILED INFORMATION:

DSO'2000 Organizing Committee
Institute of Mathematics and Mechanics
Ural Branch, Russian Academy of Sciences
S.Kovalevskoi Str., 16
620219 Ekaterinburg
Russia

Phone: +7 3432 493229
E-mail: digas@imm.uran.ru
Fax: +7 3432 742581

http://orca.st.usm.edu/marcin/mp/cfp/DSOEEA/cfp.html

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

From: Thom Mulders <mulders@inf.ethz.ch>
Date: Tue, 25 Jan 2000 11:19:44 +0100
Subject: Rhine Workshop on Computer Algebra

RWCA'00

Seventh Rhine Workshop on Computer Algebra
March 22 - March 24, 2000
Bregenz, Austria

Purposes

This is the seventh edition of a workshop initiated in Strasbourg in 1988
and held every second year. To avoid competition with well-established
conferences in the field, the workshop is kept as informal as possible.
Its two main purposes are to offer an opportunity to young researchers
and newcomers to present their work and to be a regional forum for
researchers in the field. Despite this latter goal, the workshop is
open worldwide to attendance.

Speakers in Preliminary Program
-------------------

Andre Weilert
E. Herrmann, A. Petho, H.G. Zimmer
Frederic Chyzak, Peter Paule, Otmar Scherzer,
Armin Schoisswohl, Burkhard Zimmermann
A.G. Grozin
E.S. Cheb-Terrab, T. Kolokolnikov
Delphine Boucher
S.A. Abramov
Claude-Pierre Jeannerod
Akmal A. Vakhidov
Stefan Klein, Andres Kecskemethy
Thomas Decker, Werner Krandick
Hans J. Stetter
Peter Draexler
W.A. de Graaf
Thom Mulders, Arne Storjohann
Arne Storjohann, Gilles Villard
Joern Mueller-Quade, Rainer Steinwandt
Juergen Gerhard
Patrik Haegglund
Isolde Mazzucco
Arthur Chtcherba, Deepak Kapur
H. Michael Moeller

All details about accommodation and registration can be found
on the WWW at http://www.inf.ethz.ch/rwca00/.

Organization

Workshop Chair: Program Committee Chair:
Thom Mulders Gaston Gonnet
Inst. of Scientific Computing Inst. of Scientific Computing
ETH-Zentrum ETH-Zentrum
CH-8092 Zurich CH-8092 Zurich
Tel: +41-1-6327473 Tel: +41-1-6327470
Fax: +41-1-6321374 Fax: +41-1-6321374
mulders@inf.ethz.ch gonnet@inf.ethz.ch

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

From: Fred Hickernell <fred@taylor.math.hkbu.edu.hk>
Date: Wed, 26 Jan 2000 09:33:29 +0800
Subject: Conference on Monte Carlo and Quasi-Monte Carlo Methods

FOURTH INTERNATIONAL CONFERENCE ON
MONTE CARLO AND QUASI-MONTE CARLO METHODS IN SCIENTIFIC COMPUTING
Hong Kong Baptist University
November 27 - December 1, 2000

PURPOSE AND THEMES
Monte Carlo methods and their deterministic variant, quasi-Monte Carlo
methods, are used to solve a variety of complex problems. Research in
Monte Carlo and quasi-Monte Carlo methods spans across many disciplines and
focuses on a number of topics, including, but not limited to, the
following:
generation of random numbers
low discrepancy sequences
space-filling experimental designs
integration
integral equations
approximation
simulation
optimization
variance reduction
computational complexity
implementation in parallel architectures
Markov chain Monte Carlo
statistical inference
financial risk management
valuation of financial derivatives
statistical physics
particle transport
design of computer experiments
image rendering
This conference provides a joint forum for specialists in the theory and
application of Monte Carlo and quasi-Monte Carlo methods to present their
results and exchange views. MCQMC 2000 is the fourth in a series of
international meetings. The previous conferences were held in Las Vegas
(1994), Salzburg (1996), and Claremont, California (1998).

PLENARY SPEAKERS
S=F8ren Asmussen, Lund University
Marco Avellaneda, New York University
Kai-Tai Fang, Hong Kong Baptist University
Peter W. Glynn, Stanford University
Christian L=E9cot, Universit=E9 de Savoie
Xiao-Li Meng, University of Chicago
Harald Niederreiter, Austrian Academy of Sciences
Erich Novak, University Erlangen-N=FCrnberg
Ian H. Sloan, University of New South Wales
Shu Tezuka, IBM Tokyo
Jian-Sheng Wang, National University of Singapore

Submission of proposals for special sessions April 30, 2000
Submission of abstracts for contributed presentations August 31, 2000
Early registration September 30, 2000
Submission of manuscripts for proceedings March 31, 2001

CONTACT INFORMATION
For more information, please see our web page or mail, fax or email the
organizers:
MCQMC 2000
c/o Statistics Research and Consultancy Centre,
Hong Kong Baptist University
Kowloon Tong, Hong Kong, China.
Tel: (852) 2339-7015
Fax: (852) 2336-1505
Email: mcqmc2000@www.mcqmc.org
URL: http://www.mcqmc.org/MCQMC2000.html

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

From: Carol Weintraub <carol@wisdom.weizmann.ac.il>
Date: Wed, 26 Jan 2000 09:57:02 +0200 (IST)
Subject: Workshop on Multiscale Computational Methods in Chemistry

Eilat Workshops on
MULTISCALE COMPUTATIONAL METHODS IN CHEMISTRY
April 5-11, 2000

* Interdisciplinary forum of computational mathematicians, physicists
and chemists, to study basic computational obstacles in chemistry
and advanced multiscale approaches for treating them.

* Review lectures for non-specialists and extended tutorials.

* Two adjacent workshops and social activity in between:
(1) Expert Workshop on Multiscale Computation in Chemistry
and Biology: April 5-7 (possibly sponsored by NATO).
(2) Excursion in the Eilat area: April 8.
(3) Research Workshop of the Israeli Science Foundation on
Multiscale Computational Methods in Chemistry: April 9-11.

* Scientific background, general information, current participant
list and registration forms, see:

http://www.wisdom.weizmann.ac.il/~achi/conf00/index.html

Scientific Committee:

- Jerry Bernholc, No. Carolina State University, USA
- Kurt Binder, Univ. Mainz, Germany
- Achi Brandt, Weizmann Institute of Science, Israel
- David Ceperley, Univ. of Illinois, USA
- Tamar Schlick, New York University, USA
- Klaus Schulten, Univ. of Illinois, USA
- Moshe Shapiro, Weizmann Institute of Science, Israel

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

From: Heinz W. Engl <engl@indmath.uni-linz.ac.at>
Date: Wed, 26 Jan 2000 17:50:24 +0100
Subject: Conference and Workshop on Inverse Problems

SFB Conference on Inverse Problems
in conjunction with
TMR Workshop on Inverse Problems.
(26th June - 1st July, 2000) These two distinct events have been
organised together to provide an excellent overview of the field of
Inverse Problems. The TMR workshop will take place in the first 2
days (26th- 27th June) , and will provide introductory lectures in
this field, thus The TMR workshop (26th- 27th June, 2000) The TMR
workshop will provide introductory courses on the following topics:
* Fundamental Inverse problem Theory & applications. * Ill-posed
problems. * Regularisation Methods. * Optimal control. * Shape
optimisation.

The workshop is part of the T(raining) and M(obility) of
R(esearchers) EU-project on Differential Equations in Industry and
Commerce. The SFB conference (28th June - 1st July, 2000). The SFB
conference will consist of advanced talks from internationally
renowned speakers. These provide a natural continuation to the
introductory courses given in the TMR Workshop. There will also be
contributed talks in research carried out in applicati

The conference is part of the special research initiative
(SpezialForschungsBereich) F013: Numerical and symbolic scientific
computation of the University of Linz. Location. The combined event
will take place in the St. Wolfgang Federal Institute for Adult
Education (BIFEB-Bundesinstitut fur Erwachsenenbildung).

The combined registration form for the TMR-SFB events can be found
on the web at:

imagewww.indmath.uni-linz.ac.at/sfb2000

For more information on the TMR workshop: Andrea Schatz Email:
schatz@indmath.uni-linz.ac.at

Organising committee for SFB F013 Heinz Engl
(engl@indmath.uni-linz.ac.at) Otmar Scherzer
(scherzer@indmath.uni-linz.ac.at), Luca Rondi
(rondi@indmath.uni-linz.ac.at) Thorsten Hohage
(hohage@indmath.uni-linz.ac.at).

Address: Industrial Mathematics Institute, University of Linz,
Altenbergerstrasse, 69, A-4040 Linz, Austria.

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

From: Karsten Decker <decker@isone.cscs.ch>
Date: Wed, 26 Jan 2000 18:49:31 +0100
Subject: SPEEDUP Workshop

SECOND ANNOUNCEMENT
27th SPEEDUP Workshop
Scientific Data Management and Understanding in Computational Science

Switzerland
March 16 - 17, 2000

Summary

Integrated solutions to computational science problems often require not
only large processing power, but in general also efficient methods and
techniques to store, manage, retrieve, analyze and discover the
knowledge contained in the often huge amounts of data generated in
experiments and computer-based modeling and simulation processes.

This workshop will demonstrate established approaches with examples of
scientific and industrial relevance, but also raise the question whether
these approaches will be sufficient in the future to cope with the
quickly growing complexity of data. Will there be completely new
methods emerging? What can we learn from the experiences gained with
very large data-bases in business computing?

The 27th SPEEDUP Workshop is intended to bring together members of
academic institutions, private enterprises and government who are
interested to obtain an overview of the state-of-the-art in scientific
data processing and to learn about new methods in management of, and
knowledge discovery in, very large amounts of scientific data generated in
computational science modeling and simulation processes.

Topics

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

Data management and repository organization
Data retrieval techniques
Statistical data analysis
Scientific visualization
Agent technologies for intelligent post-processing
Data warehouses
Data mining

Confirmed speakers

The list of confirmed speakers includes

Ron Appel, Swiss Institute for Bioinformatics, Switzerland
Peter Baumann, Active Knowledge GmbH Munich, Germany
Rita Casadio, Biocomputing Group - CIRB, University of Bologna, Italy
Mihai Datcu, German Aerospace Center DLR, Germany
Mikael Jern, Linkoping University, Sweden
Victor Jongeneel, Swiss Institute for Bioinformatics, Switzerland
Epaminondas Kapetanios, ETH Zurich, Switzerland
Ulrich Lang, RUS, University of Stuttgart, Germany
John Maddocks, EPF Lausanne, Switzerland
Silvio Merazzi, SMR SA, Switzerland

General information and registration

The latest information on the program can be found at URL

http://www.speedup.ch/Workshops/Workshop27Ann.html

On-line registration is available at URL

http://pobox.cscs.ch:8080/Workshops/Workshop27Reg.html

Since the number of participants is limited, we urge you to register
promptly to ensure that a space is reserved in your name. In any case,
please register until March 10, 2000 at the latest.

Further information on the SPEEDUP Society can be obtained from URL

http://www.speedup.ch/

Program committee

Franco Accordino
Karsten M. Decker
Jean M. Favre
Swiss Center for Scientific Computing (CSCS)
CH-6928 Manno
Tel: +41 (91) 610 8267
Fax: +41 (91) 610 8209
Email: speedup@cscs.ch

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

From: Rich Lehoucq <rblehou@sandia.gov>
Date: Tue, 25 Jan 2000 16:57:25 -0700
Subject: John von Neumann Fellowship at Sandia Laboratories

John von Neumann Research Fellowship in Computational Science
Sandia National Laboratories

The Computational Sciences, Computer Sciences and Mathematics
Center at Sandia National Laboratories invites outstanding
candidates to apply for the 2000 John von Neumann Research
Fellowship in Computational Science. The Fellowship is supported
by the Mathematical, Information, and Computational Sciences Division
at the U.S. Department of Energy. Von Neumann Fellowships at Sandia
provide an exceptional opportunity for innovative research in
scientific computing on advanced architectures. Candidates must
have recently earned a Ph.D. degree or the equivalent and have
a strong interest in advanced computing research.

Sandia maintains strong research programs in a variety of areas,
including analytical and computational mathematics, discrete
mathematics and algorithms, computational physics and engineering,
and advanced systems software and tools. Sandia has a unique parallel
computing environment which includes the 4500-node Intel Teraflops
machine, a 192-node SGI Origin 2000, a 168-node DEC 8400 cluster,
a 800 node DEC workstation cluster.

Applicants from a broad range of disciplines will be considered.
Preference will be given to those in the fields of numerical
methods, computational science, linear and nonlinear solvers,
optimization, parallel algorithm development and the predictability
of complex phenomena.

The Fellowship appointment is for a period of one year with a likely
renewal for a second year. It includes a highly competitive salary,
moving expenses and a generous professional travel allowance.
Applicants should send a resume, a statement of research goals, and
three letters of recommendation to: David Womble, Dept. 9222, Sandia
National Laboratories, Albuquerque, NM 87185-1110. All applications
received before March 10, 2000, will get full consideration, and
the position will remain open until filled.

For further information contact David Womble at 505-845-7471 or by
e-mail at dewombl@cs.sandia.gov.

Sandia National Labs is a U.S. Department of Energy multiprogram
laboratory, operated by Sandia Corporation, a wholly owned subsidiary
Lockheed Martin Corporation, with locations in Albuquerque, NM and
Livermore, CA.

Equal Opportunity Employer. Drug-free workplace. U.S. Citizenship is
normally required.

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

From: Ali Sayed <sayed@icsl.ucla.edu>
Date: Thu, 27 Jan 2000 10:02:04 -0800
Subject: Faculty Positions at UCLA

Faculty Positions in Signal Processing
Electrical Engineering
University of California
Los Angeles

The Electrical Engineering Department invites applications
from highly qualified persons for tenure-track faculty
positions in the School of Engineering and Applied Science
at the Assistant Professor level.

The department is particularly interested in candidates with
experience in Speech, Image and Biomedical Signal Processing.
Candidates with a Ph.D. in Electrical Engineeringand an
excellent research and teaching record are encouraged to apply.
Applications including a curriculum vitae, names of at least
3 referees, teaching and research statements (no longer than 1
page each), and three selected reprints should be sent, by
March 1st 2000 to:

Professor Tatsuo Itoh
Electrical Engineering Department
School of Engineering and Applied Science
66-147A Engr IV
University of California, Los Angeles
Los Angeles, CA 90095

FACULTY POSITION IN SYSTEMS AND CONTROL
UCLA ELECTRICAL ENGINEERING DEPARTMENT.

The Electrical Engineering Department invites applications for
a faculty position in the area of systems and control. Applicants
at all levels will be considered. Candidates should have a PhD
and an outstanding research and teaching record in this area.
The department is particularly interested in persons whose research
involves interaction between systems and control and
other areas of Electrical Engineering.

Applications including a curriculum vitae, names of at least
3 referees, a 2-page statement of research and teaching interests,
and 3 selected reprints should be sent, by March 15th, 2000 to:

Professor Tatsuo Itoh
Electrical Engineering Department
School of Engineering and Applied Science
66-147A Engr IV
University of California, Los Angeles
Los Angeles, CA 90095

Applications will be processed as they are received.
UCLA is an Equal Opportunity/Affirmative Action Employer.

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

From: Frank Wuebbeling <wuebbel@math.uni-muenster.de>
Date: Mon, 24 Jan 2000 15:34:08 +0100 (MET)
Subject: Faculty Position at the University of Muenster, Germany

The Faculty of Mathematics and Computer Science of the
University of Muenster, Germany
invites applications for a professorship (C4) in
"Applied Mathematics, in particular Numerical Mathematics" (succession
Prof. Colin W. Cryer).

Applicants are expected to teach graduate and undergraduate level courses
and do research in the full range of Numerical Mathematics.
Deadline for applications is March 31, 2000. Information is
available via

http://www.uni-muenster.de/Dezernat2/Stellen/st_0290.htm

Frank Wuebbeling
Institut fuer Numerische und Instrumentelle Mathematik der Universit=E4t =
M=FCnster
FON (+49) 251 - 83 33795, FAX (+49) 251 - 83 32714
Einsteinstr. 62, D-48149 Muenster, Germany

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

From: Rosie Renaut <renaut@asu.edu>
Date: Tue, 25 Jan 2000 09:59:12 -0700
Subject: Visiting Faculty Position at Arizona State University

The Department of Mathematics at Arizona State University invites
applications for visiting positions at the Assistant Professor
level commencing Fall 2000. For complete information about application
requirements and process see
http://math.la.asu.edu/~math/position/vs2.html
Application deadline is April 15, 2000, and weekly until the positions
are filled. AA/EOE.

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

From: Ewald Quak <Ewald.Quak@math.sintef.no>
Date: Tue, 25 Jan 2000 11:01:47 +0100
Subject: Research Positions at the MINGLE Project

Several temporary positions, both doctoral and post-doctoral,
are now available within a new EU research training network
called MINGLE (Multiresolution in Geometric Modelling).
These positions will normally be between 6 months and two
years in duration and will provide an excellent opportunity
to gain research experience abroad.

The main objective of the project is to train young European
researchers, both in mathematics and computer science, in
various aspects of multiresolution in geometric modelling.
Relevant research topics include: hierarchical decomposition
of triangulations, generation of smooth surfaces from irregular
triangle meshes, thinning, decimation, compression of meshes,
remeshing, wavelets, application of multiresolution
representations to computer graphics, and data structures
and algorithms for storage and manipulation.

MINGLE will run from 2000 to 2003 and involves research teams
from the following nine partners:

SINTEF Applied Mathematics, Norway
Contact: Michael Floater <mif@math.sintef.no>
Tel Aviv University, Israel
Contact: Nira Dyn <niradyn@math.tau.ac.il>
Munich University of Technology, Germany
Contact: Armin Iske <iske@mathematik.tu-muenchen.de>
Technion, Israel
Contact: Craig Gotsman <gotsman@virtue3d.com>
Max Planck Institute, Saarbrucken, Germany
Contact: Hans-Peter Seidel <hpseidel@mpi-sb.mpg.de>
Joseph Fourier University, Grenoble, France
Contact: George-Pierre Bonneau <Georges-Pierre.Bonneau@imag.fr>
University of Cambridge, UK
Contact: Neil Dodgson <nad@cl.cam.ac.uk>
University of Genova, Italy
Contact: Leila De Floriani <deflo@disi.unige.it>
Systems in Motion AS, Norway
Contact: Paal-Robert Engnaes <preng@sim.no>

Further details are available on the webpage

http://www.oslo.sintef.no/mingle/

(especially concerning the eligibility rules). If you consider
you are interested in. Women are especially encouraged to apply.

coordinating partner via Michael Floater (mif@math.sintef.no) or
Ewald Quak (ewq@math.sintef.no).

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

From: Rob MacLeod <macleod@cvrti.utah.edu>
Date: Wed, 26 Jan 2000 21:30:41 -0700 (MST)
Subject: Postdoctoral Position at University of Utah

Postdoctoral Position at University of Utah

The Scientific Computing and Imaging Institute at the University of Utah
has an immediate opening for a post-doctoral fellow in the field of
geometric modeling and mesh generation. The successful candidate will work
within the newly founded NIH/NCRR Center for Bioelectric Field
Modeling, Simulation, and Visualization on projects with researchers in
computer science, bioengineering, cardiology, and neurosurgery. The
overall goal of the project is to create an integrated, flexible software
environment for all aspects of bioelectric field problems using
computational steering and visual dataflow architecture. The successful
candidate will carry out research in areas such as parametric surface
representations, efficient multiresolution descriptions of surface and
volume meshes, and robust methods for mesh creation, adaptation, and
manipulation.

The successful candidate should have a Ph.D. in a related field such as
computer science, mathematics, or physics. Applicants should have previous
programming experience in C/C++, be well versed in numerical methods and
high performance computing, and have advanced knowledge in geometric
modeling, mesh generation, and surface and volume representation
techniques. Previous experience with medical applications and medical
imaging are valuable assets.

For more information on the project, see http://www.sci.utah.edu/ncrr. The
position is open immediately and has secure and competitive funding for up
to three years. Send applications or inquiries to the address

Raelynn Potts
50 S Central Campus Drive
Room 3485
Salt Lake City UT 84112
801/585-5983
rpotts@cs.utah.edu

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

From: Peter Forsyth <paforsyt@elora.math.uwaterloo.ca>
Date: Thu, 27 Jan 2000 10:11:18 -0500 (EST)
Subject: Postdoctoral Position at University of Waterloo

The Computational Finance project at the University of Waterloo is funded
by the Natural Sciences and Engineering Research Council of Canada, the
Royal Bank of Canada, and Bell Canada University Labs. Project members
include faculty from Computer Science (Forsyth and Labahn), the Centre for
Advanced Studies in Finance (Boyle and Vetzal), and Statistics and
Actuarial Science (Tan).

The Computational Finance project invites applications for a post-doctoral
fellow. A primary responsibility of this position will be to carry out
research in the area of development and testing of algorithms utilizing
low discrepancy sequences in finance. A secondary responsibility is to
participate in the application of numerical PDE methods in option pricing.

This position is for one year initially, and renewable for a second year
if mutually agreeable.

The applicant should have a Ph.D. in a relevant discipline (e.g. Computer
Science, Statistics, Mathematics, or Physics) and have a strong interest
in computational techniques. Previous experience in developing numerical
applications in such languages as C++ would be an asset.

Further information about the research interests of members of the
Computational Finance Group can be found at
http://www.scicom.uwaterloo.ca/~paforsyt/compfin.html

Applications should include a curriculum vitae and the names, telephone
numbers, and e-mail addresses of three references. The application should
be directed to Amy Aldous, Centre for Advanced Studies in Finance,
University of Waterloo, Waterloo, Ontario, Canada N2L 3G1. The position
is expected to commence as soon as possible. Applications will be
considered as soon as they are received.

The University of Waterloo encourages applications from all qualified
individuals, including women, members of visible minorities, native
peoples, and persons with disabilities.

These appointments are subject to the availability of funds.

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

From: Norbert Heuer <heuer@iwd.uni-bremen.de>
Date: Tue, 25 Jan 2000 15:43:54 +0100 (MET)
Subject: Student Position at University of Bremen

Student Position in Applied Mathematics

The Institute for Scientific Computing at the University of Bremen is
offering a research position in Applied Mathematics.
Opportunity is given to attain a doctoral degree in Mathematics.

Aim of this project, funded by the German Research Foundation (DFG),
is the development of adaptive strategies for the solution of boundary
integral equations. We are seeking candidates with a strong background
in numerical analysis, preferably in finite element methods.
A master or diploma in Applied Mathematics or a related field is required.

The position can be filled immediately and is open for two years.
It is intended to apply for an extension of the grant for two more years.
The salary is regulated by the German BAT contract: 1/2 BAT IIa.
It depends on age and family status (a 25 year old unmarried person
receives about DEM 32,000 gross payment per annum).

Interested applicants should contact

Norbert Heuer
email: heuer@iwd.uni-bremen.de (preferred)

or

IWD
Universitaet Bremen
Postfach 33 04 40
28334 Bremen
Germany

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

From: Oleg Burdakov <olbur@mai.liu.se>
Date: Sun, 23 Jan 2000 18:37:27 +0100 (MET)
Subject: Contents, Optimization Methods and Software

Optimization Methods and Software (OMS)
Volume 13, Number 1 (February, 2000)

P.S. Bradley and O.L. Mangasarian
Massive data discrimination via linear support vector machines
1-10

N. Krejic and J.M. Martinez
A globally convergent inexact-Newton method for solving reducible
nonlinear systems of equations
11-34

I. Charpentier and M. Chemires
Efficient adjoint derivatives: application to the atmospheric
model MESO-NH
35-63

W. Klein and A. Walther
Application of techniques of computational differentiation
to a cooling system
65-78

Forthcoming papers and complete table of contents for the journal OMS:
http://www.mai.liu.se/~olbur/OMS.contents

Instructions for authors, subscription information, free sample copies:
http://www.gbhap.com/Optimization_Methods_Software/

Latex style files:
http://www.mai.liu.se/~olbur/STYLES/

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

From: Thomas Hogan <hogan@math.ohio-state.edu>
Date: Mon, 24 Jan 2000 17:17:51 -0500 (EST)
Subject: Contents, Journal of Approximation Theory

Table of Contents: J. Approx. Theory, Volume 101, Number 2, December 1999

Leonid Golinskii
The Christoffel function for orthogonal polynomials on a circular arc
165--174

G. Godefroy and V. Indumathi
Proximinality in subspaces of $c_0$
175--181

F. Schipp and W. R. Wade
Zak transforms on binary fields
182--195

Thomas Bloom and Jerzy Szczepaski
On the zeros of polynomials of best approximation
196--211

Natalia Humphreys and Ranko Bojanic
Rate of convergence for the absolutely $(C,\alpha)$ summable Fourier
series of functions of bounded variation
212--220

Wolfgang Gehlen
On a conjecture concerning strong unicity constants
221--239

A. Kamaly, A. M. Stokolos, and W. Trebels
On the rate of almost everywhere convergence of certain classical
integral means, II
240--264

Dieter Gaier
The Faber operator and its boundedness
265--277

Manfred Reimer
Well conditioned spherical polynomial systems
278--288

L. Dalla and V. Drakopoulos
On the parameter identification problem in the plane and the polar
fractal interpolation functions
289--302

Alexei Zhedanov
Biorthogonal rational functions and the generalized eigenvalue problem
303--329

T. Kasuga and R. Sakai
Uniform or mean convergence of Hermite-Fej\'er interpolation of
higher order for Freud weights
330--358

Stefan Jansche
Weak type inequalities for best simultaneous approximation in
Banach spaces
359--403

Author index for Volume 101
404

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

End of NA Digest

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