**Today's Topics:**

- Positions at RIACS
- SIAM meeting, Denver, October 12-15
- Re: Random Vortex Method
- Junior visiting 1 year position in Aachen
- Ron Dembo's address
- Help interpolating function of three variables
- New phone and Fax numbers for Philips Research
- Response to Sadler

To: na@score.stanford.edu

Date: Wed, 02 Sep 87 09:25:37 -0700

From: raugh@riacs.edu

POSITIONS AT RIACS: in Advanced Algorithms and Architectures Project

The Research Institute for Advanced Computer Science (RIACS), located forty

miles southeast of San Francisco at NASA Ames Research Center, is seeking

two scientists to join the Advanced Algorithms and Architectures

(AAA) project.

The AAA project is a collaborative effort between NASA and RIACS to explore

the use of new parallel computer architectures for scientific applications,

primarily computational fluid dynamics and computational chemistry. The

research is being conducted jointly with NASA's Numerical Aerodynamic

Simulation Program (a national pathfinder for supercomputing in fluid-

dynamics research) and with the Ames Research Center's Computer Systems and

Research Division, which provides supercomputing resources for many of

NASA's scientific programs.

Scientific objectives of the AAA project include development and

implementation of kernel parallel algorithms for scientific applications,

comparative performance analysis of different architectures for NASA

applications, and study of languages for parallel computing. Information

acquired through our studies will be used in the design of future machines.

The AAA staff currently consists of the project leader, 4 visiting

scientists, and 3 Stanford University graduate students. NASA physicists,

chemists, and computer scientists are collaborating with this group.

Current research topics include parallel multigrid techniques for solving

Navier-Stokes equations, parallel kernel algorithms using methods from

domain decomposition, parallel solutions of incompressible flows, and

parallel particle-method tools for hydrodynamics.

If you are interested in joining this project, send us your resume, reprints

of significant papers or reports, and names of references. Both visiting

and long-term positions are available. Preference will be given to

scientists who have a Ph.D. in computer science or a related field and who

have demonstrated success in working in a multidisciplinary research

environment. Address applications and requests for further information to

Dr. Michael R. Raugh

AAA Project Leader

NASA Ames Research Center, MS 230-5

Moffett Field, CA 94035

(e-mail address: raugh@riacs.edu)

RIACS is an institute of Universities Space Research Association (USRA).

RIACS' charter is to conduct computer-science research in collaboration with

NASA scientists.

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

Date: 3 Sep 87 14:57:00 EDT

From: "SIAM" <siam@wharton.upenn.edu>

To: "na" <na@score.stanford.edu>

Reply-To: "SIAM" <siam@wharton.upenn.edu>

Computational Sciences to be featured at the

SIAM 35th Anniversary Meeting

Computational science will be a major theme of SIAM's annual meeting in l987,

according to Hans Weinberger, program chair for the meeting from the

University of Minnesota, Minneapolis. The meeting, which will be held in

Denver, October 12-15, marks SIAM's 35th anniversary. Weinberger and his

committee have assembled an impressive group of speakers who will focus on

problems in the computational sciences as well as on other areas of current

broad interest to applied mathematicians. Weinberger and others observe that

computational science seems to mean different things to different people, but

in the aggregate, it can be said to include scientific computing, computer

science, discrete mathematics, computational mathematics, numerical analysis

and algorithm development all of which will be covered at the Denver meeting.

In addition to the regular sessions, there will be two special presentations.

The John von Neumann Lecture will be presented by Richard M. Karp from the

University of California at Berkeley, who will speak on the complexity of

parallel computation. The George Polya Prize recipient, Andrew Yao from

Princeton University, will speak on boolean circuits and computational

complexity. Additional topics to be covered are robust control, and inverse

scattering.

Invited Presentations

Modeling the Earth System Robust Control Theory and Matrix

Francis P. Bretherton, National Perturbation Problems

Center for Atmospheric Research John Doyle, California Institute

of Research

Computational Hypersonic Aerodynamics

Douglas L. Dwoyer, NASA Langley Research Liquid Crystal Theory

Center Jerry L. Ericksen, University

of Minnesota

Viscoelastic Properties of Rodlike

Polymers in Solution Inverse Scattering and Guy C.

Berry, Carnegie Mellon University Applications to Nonlinear

Evolution Equations

Recent Progress in Theoretical Reflection Mark J. Ablowitz, Clarkson

Seismology: Identifying Partial University

Differential Equations from Attributes of

Their Solutions Graph Minor Algorithms: Path

William W. Symes, Rice University Routing and Coloring

Paul D. Seymour, Bell

Communications Research

Corporation

Representatives of ICEMAP, the Interagency Committee for Extramural

Mathematics Programs of the federal government, will give an overview of

federal funding for mathematical research, with a discussion of the funding

patterns that are evolving in their agencies.

Minisymposia

Scientific Computing

Computational Advances at the NSF Supercomputer Centers

John Connolly, National Science Foundation

Supercomputing Research: Scientific Results on the Cornell National

Supercomputing Facility

Lawrence Lee, Cornell University, and Linda Morris, Cornell University

Science, Supercomputing and Graphics/Imaging

Robert B. Wilhelmson, National Center for Supercomputing Applications,

University of Illinois, Urbana-Champaign

Optimization and Supercomputing

Michael J. Healy, Boeing Computer Services

Numerical Methods for Viscous, Incompressible Flow

John B. Bell, Lawrence Livermore National Laboratory and Alan E. Berger,

Naval Surface Weapons Center

Ship Wave and Floating Body Problems

Ralph Kleinman, University of Delaware

Methods for Compressible Fluid Computations

Phillip Colella, Lawrence Livermore National Laboratory; James G. Glimm,

Courant Institute of Mathematical Sciences; and David Sharp, Los Alamos

National Laboratory

Solitons and Coherent Structures

David K. Campbell, Los Alamos National Laboratory

Algorithm Development

Dense Matrix Computation on Vector and Parallel Computers

Danny Sorensen, Argonne National Laboratory

Sparse Matrix Computation on Vector and Parallel Computers

J. Alan George, Oak Ridge National Laboratory and the University of Tennessee,

Knoxville

Integrated Environments for Scientific Computing

Guy William Cherry, Tektronix, Inc.

New Vector Algorithms for the IBM 3090 Vector Facility

Fred G. Gustavson, IBM T.J. Watson Research Center

Multigrid and Related Methods

Domain Decomposition Methods for Partial Differential Equations

Roland Glowinski, University of Houston

Adaptive Mesh Refinements in Finite Element Methods

James H. Bramble, Cornell University

Finite Element Method in Meteorological and Oceanographic Flows

Beny Neta, Naval Postgraduate School

Multigrid Methods

A special four-part session organized by Stephen S. McCormick, University of

Colorado, Denver

Discrete Mathematics/Computer Science

Computational Geometry

Bernard Chazelle, Princeton University

Combinatorial Optimization and Applications

Bernhard Korte, Universitat Bonn

Intersection Graphs and Their Applications

F. R. McMorris, Office of Naval Research, and William T. Trotter, Jr., Arizona

State University

Complexity of Parallel and Distributed Computation

Eli Upfal, IBM Almaden Research Center

Control Theory and Robotics

Research Issues in Robotics

John E. Hopcroft, Cornell University

Mathematics of Robust Control Theory

John Doyle, California Institute of Technology

Applications of Robust Control Theory

John Doyle, California Institute of Technology

Inverse Scattering

Inverse Scattering Problems

Roger G. Newton, Indiana University

Math Education

The l987 Mathematical Contest in Modeling

Ben Fusaro, Salisbury State College

If you are interested in attending the meeting and would like further

information, you can respond through e-mail: SIAM@Wharton.Upenn.edu

or you may fill out and return the attached form to: Conference Coordinator,

SIAM ll7 South l7th Street, l4th Floor, Philadelphia, PA l9l03-5052.

Telephone 215-564-2929.

SIAM 35th Anniversary Meeting

October 12-l5, l987

Marriott Center City, Denver, Colorado

I am interested in attending the meeting please send me the following

materials:

[] Advance registration material

[] Preliminary meeting program

[] Information on the short course

[] Please send me information about SIAM

[] I am interested in exhibiting software/hardware products

Name_________________________________________________________________________

First Middle Initial Last

Organization_________________________________________________________________

Department___________________________________________________________________

Address______________________________________________________________________

City_______________________________State________________Zip___________________

Phone ( )

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

Date: 4 Sep 87 00:18:04 GMT

From: lbl-csam.arpa!baden@ucbvax.Berkeley.EDU (Scott B. Baden)

To: na@score.stanford.edu

In reply to Arun's note:

Erik Tiemroth wrote a Thesis in Naval Architecture,

that Chorin has told me he thinks gives a reasonably

good overview. I have read parts of this myself,

and thought it quite good. Here is the reference:

Erik C. Tiemroth

The Simulation of the Viscous Flow Around a Cylinder

by the Random Vortex Method

Ph. D. Dissertation

Department of Naval Architecture and Offshore Engineering

University of California

Berkeley, CA

MAY 1986

A few years ago Tony Leonard wrote a survey for JCP, and

you may want to look that, too:

A. Leonard

Vortex Methods for Flow Simulation

Journal of Computational Physics

Vol. 37, pp 289-335, 1980

Scott Baden

Lawrence Berkeley Lab, Mathematics

[Editor's Note: The contributor, Scott Baden, has also written

a Ph. D. thesis about the implementation of the random vortex

method on parallel computers.]

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

Date: Fri, 04 Sep 87 11:10:44 CET

From: Rolf Jeltsch <JELTSCH%DACTH51.BITNET@forsythe.stanford.edu>

To: NA@score.stanford.edu

The Institue for Geometry and Practical Mathematics of the

RWTH Aachen will have a junior level 1 year visiting position.

We are interested in a young scientist who has finished his Ph.D.

in numerical analysis and who would like to work on numerical

problems arising in climate modelling. We investigate energy

balance models in one and two space dimensions. Hence it

would be advantagous if the candidate has experience in one or more of

the fields: boundary value problems in ODEs, parabolic problems , bifur-

cation problems. Teaching duties are 2 hours of an excercise session each

week in numerical analysis.

Starting date is somewhere in October or early November, 1987.

The Institute has approximately 20 scientists. Most are working

in numerical analysis and only a few are working in

geometry and computer aided geometry.

For more information call Rolf Jeltsch (49) 241 803950

or write to Rolf Jeltsch

Institut fuer Geometrie und Praktische Mathematik

Templergraben 55

RWTH Aachen

D-5100 Aachen, Fed. Rep. of Germany

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

Date: Fri, 04 Sep 87 13:33:33 SET

From: Toint Philippe <PHTOINT%BNANDP10.BITNET@forsythe.stanford.edu>

To: People on NaNet <NA@score.stanford.edu>

Does anyone know an address (postal or e-mail) where Ron Dembo can

EFFECTIVELY be reached ? I would be delighted if you could forward

it to me...

Many thanks

Philippe Toint

Department of Mathematics

Facultes Universitaires ND de la Paix

61, rue de Bruxelles

B-5000 Namur (BELGIUM)

e-mail : PHTOINT@BNANDP10.BITNET

pto!fun-cs.uucp

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

Date: 3 Sep 87 21:31:43 GMT

From: ecsvax!urjlew@mcnc.org (Rostyk Lewyckyj)

To: na@score.stanford.edu

I am looking for code, preferably in FORTRAN, or references to code,

or a cookbook description for an algorithm, to do interpolation for

a function F(x,y,z) of three variables, given F tabulated on a regular,

i.e. xl,(dx),xh; yl,(dy),yh; zl,(dz),zh, grid.

The F that I am immediately concerned with is nicely continuous and

smooth, but I may want to handle Fs that are less well behaved.

The IMSL subroutine package has routines IBCCCU,IBCEVL and IBCIEU

to do BiCubic spline interpolation for functions G(x,y)

of two variables, but there is nothing for three variables.

Thank you in advance

Rostyk

--

Reply-To: Rostyslaw Jarema Lewyckyj

urjlew@ecsvax.UUCP , urjlew@tucc.bitnet

or urjlew@tucc.tucc.edu (internet)

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

Mail-From: GOLUB created at 4-Sep-87 13:32:45

From: prlb2!prlb.DECNET!courtois@seismo.CSS.GOV

Date: Fri, 4 Sep 87 19:54:49 +0100

To: seismo!score.stanford.edu!golub@seismo.CSS.GOV

Since September 3, the telephone and fax numbers of the Philips Research

Laboratory in Brussels are changed:

New phone numbers: Central: 32 2 674 22 11

My direct line: 32 2 674 22 69

Fax number: 32 2 674 22 99.

P.-J. Courtois

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

Date: Fri, 4 Sep 1987 22:22 EDT

From: Richard M. Heiberger <V5807E%TEMPLEVM.BITNET@forsythe.stanford.edu>

To: <sadler@BUCKNER-EMH.ARPA>, <NA@score.stanford.edu>

Regarding the query by Sadler in v87, #67, let me recommend:

William G. Cochran and Gertrude M. Cox, Experimental Designs, Second Edition.

Wiley, 1957.

In addition to being an excellent text on the subject, they also include a

very comprehensive collection of designs. Plan 10.11 provides 3 weeks of the

12 in your example. Reassigning numbers to individuals and replicating the

entire plan four times will give you 12 weeks. It won't come out even in the

example, however, because person number one must be paired with three others

each week and the remaining 19 are not divisible by three. If you have some

freedom in the choice of number of treatments (persons), and block sizes

(number at each table), you can get a balanced design.

Richard M. Heiberger

Temple University

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End of NA Digest

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