Subject: NA Digest, V. 94, # 19 NA Digest Sunday, May 8, 1994 Volume 94 : Issue 19 Today's Editor: Cleve Moler The MathWorks, Inc. moler@mathworks.com Today's Topics: Parallel Block Cyclic Reduction Conference Roommate Database Needed IMANA Newsletter Interface of Mathematics and Chemistry Mathematical and Numerical Aspects of Wave Progpagation International Conference on Hyperbolic Problems Computational Molecular Dynamics Colloqium to Honor Jean Descloux Large-Scale Structures in Acoustics and Electromagnetics Parallel Processing of Discrete Optimization Problems Manchester Linear Algebra and Applications Conference Postdoctoral Position at Imperial College London Submissions for NA Digest: Mail to na.digest@na-net.ornl.gov. Information about NA-NET: Mail to na.help@na-net.ornl.gov. ------------------------------------------------------- From: Ajay Kalhan Date: Wed, 4 May 1994 13:02:29 -0600 Subject: Parallel Block Cyclic Reduction Hi! I need to do parallel block cyclic reduction on a general block tridiagonal matrix (like the one shown on pp 170 of Golub & Van Loan), with no restriction on the number of block rows, and none on the blocks. If somebody has parallelized the BCR or has references, and would like to comment on/discuss the issues involved, please send me email. Thank you. /ajay Ajay Kalhan email: ak@c3.lanl.gov ------------------------------ From: Mohsen Maesumi Date: Wed, 4 May 94 14:42:43 CDT Subject: Conference Roommate Database Needed Everyone has noticed that the financial crisis in higher education has caused lower attendance in conferences. This situation has become especially critical for the junior faculty in small financially-constrained universities. A partial remedy is to share the cost of hotel accommodations. It would be A LOT easier if the organizers of each conference assign roommates, but this is not the common practice. An independent solution is to have a database of attendees who like to share a room. A rudimentary solution would be to set up an ftp site which would receive and collate requests or perhaps a bulletin board that simply posts all requests. (With the usual questions answered: conference name, location, dates of arrival and departure, male/female, smoking/nonsmoking, snoring/nonsnoring!) Does anybody know how to go about this? (I am sure most of the software for this is already out there.) Can/should we convince AMS to add this to e-math? In particular I like to attend and share a room in SIAM annual meeting, San Diego, July 24-30. Mohsen Maesumi maesumi@math.lamar.edu ------------------------------ From: Iain Duff Date: Wed, 4 May 94 16:51:17 BST Subject: IMANA Newsletter IMANA Newsletter Volume 18 Number 3 .. April 1994 A machine readable copy of much of the IMANA Newsletter can be obtained from RAL by anonymous ftp to numerical.cc.rl.ac.uk (130.246.8.23). It is file imana.april94.Z in directory pub/open. If you would like a regular hard copy of the complete Newsletter, then you should contact the IMA directly at: Catherine Richards House Institute of Mathematics and its Applications 16 Nelson Street Southend-on-Sea Essex SS1 1EF England ------------------------------ From: Scott Weidman Date: Wed, 04 May 94 10:07:13 EST Subject: Interface of Mathematics and Chemistry NRC TO STUDY RESEARCH INTERFACE OF MATHEMATICS AND CHEMISTRY The National Research Council has formed a Committee on Mathematical Challenges from Computational Chemistry, chaired by Frank Stillinger of AT&T Bell Laboratories. The committee is identifying the opportunities for collaborative and synergistic research between mathematical scientists and computational chemists. Its purview ranges from quantum mechanics to rational drug design to protein folding. The committee is seeking the input of the mathematical community, including ideas on the opportunities for research on this interface and on how such interdisciplinary work can be encouraged. For further information, please contact the study director, Scott Weidman, sweidman@nas.edu. The committee's report is expected in January 1995. ------------------------------ From: Eliane Becache Date: Mon, 2 May 1994 09:46:30 +0200 Subject: Mathematical and Numerical Aspects of Wave Progpagation THIRD INTERNATIONAL CONFERENCE ON MATHEMATICAL AND NUMERICAL ASPECTS OF WAVE PROGPAGATION SPONSORED BY: INRIA and SIAM DATES: APRIL 24-28,1995 LOCATION: JUAN-LES-PINS (FRANCE) The third conference in this series will be held in Juan-les-Pins, France in April 1995, and as in the previous meetings, in Strasbourg, 1991, and Delaware,1993, the major objective is to bring mathematicians and engineers up to date on new developments, in various domains, concerning methods for solving mathematical and numerical problems issuing from wave propagation phenomena. Enhancing the two way information flow between theoretician and engineer is an equally vital function served by these conferences. Original work, both mathematical and numerical, is solicited from mathematicians, scientists, and engineers in order to achieve the goals of this conference. TOPICS: * Waves in homogeneous, heterogeneous, layered or random media, homogeneization * Guided waves, surface waves, scattering, resonances * Inverse problems and imaging, control theory, optimal control * High and low frequency asymptotic analysis, ray methods, paraxial methods * Absorbing boundary conditions, artificial boundary conditions * Finite difference methods, finite element methods, spectral methods * Integral equations, boundary element methods * Multigrid methods, domain decomposition, wavelets * Vector and parallel processing * Waves and kinetic equations * Linear algebra and fast algorithms DOMAINS OF APPLICATION: Acoustics, Elastodynamics, Electromagnetics, Water waves and hydrodynamics, Linear and nonlinear optics, Geophysics, Fluid-structure interaction, Nondestructive testing, Tomography INVITED SPEAKERS (preliminary list): P. Gerard, A. Kometch, D. J. Koury, P. Markowich, P. A. Martin, D. W. McLaughlin, C. Pichot, J. Sylvester. INSTRUCTIONS FOR AUTHORS: three types of presentations will be considered: a) 25 minute oral presentations: five copies of complete paper, a maximum of 10 pages, should be submitted. b) Poster presentations: five copies of 2-page abstracts should be submitted. c) Video Session DEADLINE: May 20, 1994: Full papers and abstracts of poster or video contributions should be received by the "Bureau des Cours-Colloques" of Inria. FOR MORE INFORMATION (including instructions for authors) Contact: Inria-Rocquencourt Bureau des Cours-Colloques B.P. 105 78153 Le Chesnay Cedex France tel: 33 (1) 39 63 56 00 fax: ee (1) 39 63 56 38 e-mail: symposia@inria.fr ------------------------------ From: John Grove Date: Mon, 2 May 94 08:39:43 EDT Subject: International Conference on Hyperbolic Problems FIFTH INTERNATIONAL CONFERENCE ON HYPERBOLIC PROBLEMS THEORY, NUMERICS, APPLICATIONS June 13-17, 1994 University at Stony Brook Stony Brook, New York Workshops and Tutorials on Industrial Mathematics and Parallel, Sunday, June 12 Scientific Committee: X. Ding, A. Donato, B. Engquist, J. Glimm, R. Jeltsch, B. Keyfitz, P. D. Lax, T. P. Liu, D. Serre The program will include plenary lectures, invited and contributed talks, and poster sessions. The conference has, as its intellectual center, the subject of conservation laws. The program will include sessions on: 1. Mathematical theory of hyperbolic conservation laws Admissibility criteria Existence and uniqueness Large time asymptotics Relaxation methods Riemann Solutions 2. Computation of solutions of hyperbolic equations Adaptive numerical methods Enhanced resolution numerical methods Shock capturing methods 3. Applications including Elastic and Plastic Flows Flow in Porous Media Flows in Granular Materials Image Processing Relativity Semiconductor Manufacture Turbulent Mixing Invited Speakers: Mathematical Theory: G.-Q. Chen, D. Christadoulou, X. Ding, A. Donato, H. Freistuhler, J. Greenberg, D. Hoff, L. Hsiao, B. Keyfitz, P. Marcati, D. Marchesin, T.-P. Liu, A. Needleman, B. Plohr, D. Serre, J. Smoller, B. Temple, Z. Xin, R. Young, T. Zhang, K. Zumbrun, Computation: G. Baker, M. Berger, P. Colella, B. Engquist, A. Harten, R. Jeltsch, R. LeVeque, B. Perthome, P. Roe, A. Szepessy, B. van Leer Applications: R. Devore, J. Grove, J. Jaffre, J.-M. Morel, S. Osher, N. Reisbro, D. Ross, D. Schaeffer, M. Slemrod, T. Wright For more information, please contact: HYP-94 Conference Secretary Department of Applied Mathematics University at Stony Brook Stony Brook, NY 11794-3600 Phone: (516) 632-7566 Fax: (516) 632-8490 E-mail: hyp94@ams.sunysb.edu ------------------------------ From: Cathy Duvall Date: Mon, 2 May 1994 11:25:28 -0500 (CDT) Subject: Computational Molecular Dynamics International Symposium on Computational Molecular Dynamics sponsored by University of Minnesota Supercomputer Institute Computers in Chemistry Division, American Chemical Society Division of Computational Physics, American Physical Society Division of Physical Chemistry, American Chemical Society October 24-26, 1994 University of Minnesota Supercomputer Institute 1200 Washington Avenue South Minneapolis, Minnesota Symposium organizers: Jan Almlof (University of Minnesota), Evelyn Goldfield (Cornell Theory Center), M. Katharine Holloway (Merck Research Laboratories), William Jorgensen (Yale University), Peter Rossky (University of Texas at Austin), George Schatz (Northwestern University), and Donald Truhlar (University of Minnesota) The University of Minnesota Supercomputer Institute is hosting an international symposium on Computational Molecular Dynamics, Monday- through-Wednesday, October 24-26, 1994 (with a reception on the 23rd), at the Hubert H. Humphrey Center located on the University of Minnesota campus in Minneapolis. The coverage of the symposium will include all aspects of the dynamics of molecular systems and the use of molecular dynamics simulations-quantum and classical, few-body and many-body, physics and chemistry. The organizing committee has developed a list of invited speakers that will insure that the program is at the forefront of the field. The list of confirmed speakers includes: Bruce Berne (Columbia University), Emily Carter (University of California,Los Angeles), Jim Chelikowsky (University of Minnesota), Paulette Clancy (Cornell University), Jean Durup (Universite Paul Sabatier), Michael Gillan (University of Keele), Trygve Helgaker (University of Oslo), Jan Hermans (University of North Carolina), Michael Klein (University of Pennsylvania), Ronnie Kosloff (Hebrew University), Uzi Landman (Georgia Tech), Claude Leforestier (Universite de Paris-Sud), Peter Lomdahl (Los Alamos National Laboratory), Paul Madden (Oxford University), Craig Martens (University of California, Irvine), Ken Merz (Penn State), Daniel Neuhauser University of California, Los Angeles), Michele Parrinello (IBM-Zurich), David Pearlman (Vertex Pharmaceuticals), Montgomery Pettitt (University of Houston), Tamar Schlick (New York University), Terry Stouch (Bristol Meyers Squibb), Julian Tirado-Rives (Yale University), Steve Walch (NASA-Ames), and John Zhang (New York University). In addition to the invited talks, there will also be poster papers to contribute to what we anticipate will be a fruitful exchange of information among a broader group of computational chemists and physicists than one usually encounters at a single meeting. Contributed poster papers are invited and strongly encouraged. Confirmed poster contributors at this date include Jan Almlof, H. Ted Davis (University of Minnesota), David Ferguson (University of Minnesota), Evelyn Goldfield, J. Woods Halley (University of Minnesota), Lester Harris (Abbott Northwestern Hospital), Peter Rossky, George Schatz, and Donald Truhlar. Persons who wish to present a poster should send a one-page abstract by July 25, 1994. Late posters will be accepted on a space available basis. The registration fee for the symposium is $150 for registrations received prior to September 30, and $175 after September 30. A 10 percent discount will be given to members of the cosponsoring divisions of the American Physical Society and American Chemical Society, listed at the top. To receive more information regarding the meeting, including a list of lecture titles, contact the Symposium Administrator: Michael J. Olesen Supercomputer Institute University of Minnesota 1200 Washington Avenue South Minneapolis, MN 55415 phone: (612) 624-1356 fax: (612) 624-8861 electronic mail: olesen@msi.umn.edu ------------------------------ From: Gabriel Caloz Date: Tue, 3 May 94 14:11:43 +0200 Subject: Colloqium to Honor Jean Descloux COLLOQUIUM to honor the 60th birthday of Jean Descloux in Lausanne, Switzerland In the honor of the 60th birthday of our collegue Jean Descloux, we are organizing a numerical analysis colloquium which will take place in the Ecole Polytechnique Federale in Lausanne, October 13 and 14, 1994. This meeting will gather his collaborators, his students as well as those who know him well. Sessions of half-hour conferences are programmed each day from 10 a.m. to 5 p.m. The lunches will be taken on the campus. A banquet will take place on Thursday evening. Each participant pays his own travel and lodging expenses. There is a 100 Swiss francs registration fee, which includes lunches, dinner and daily refreshments. Our secretery (Mrs J. Mosetti, phone 41-21-693-25-55, afternoon) will make arrangements for hotel reservation. Further informations will be mailed later. In the meantime, please keep these two days in mind and let us know your intentions. The organizers : G. Caloz J. Rappaz Universite de Rennes I Ecole Polytechnique Federale Institut de Mathematiques Departement de Mathematiques Campus de Beaulieu MA-Ecublens F-35042 Rennes (France) CH-1015 Lausanne (Suisse) caloz@univ-rennes1.fr For more information contact: Mrs J. Mosetti, secretary Professor J. Rappaz, EPFL, MA-Ecublens, CH-1015 Lausanne. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ------------------------------ From: John Tucker Date: Tue, 03 May 94 10:47:56 EST Subject: Large-Scale Structures in Acoustics and Electromagnetics NATIONAL RESEARCH COUNCIL SYMPOSIUM "LARGE-SCALE STRUCTURES IN ACOUSTICS AND ELECTROMAGNETICS" Sponsored by the Office of Naval Research This symposium will examine the dynamics of large-scale structures, that is, structures that are large relative to their operating wavelengths. Large-scale structures typically involve many substructures and are characterized by an extended range of scales. Examples of such structures include large man-made objects in the ocean such as naval and maritime vessels, aerospace vehicles, and densely packed microelectronic and optical integrated circuits (VLSI). Analytical, computational, and experimental procedures for studying large-scale structures entail an extremely large number of degrees of freedom. The excitation of large- scale structures can yield both linear and nonlinear responses, with similar effects in surrounding media. The dynamics of the substructures and their interfaces include time- variant, dispersive, and dissipative aspects. The focus of the symposium will be on computational methods required to determine the dynamics of large-scale electromagnetic, acoustic, and mechanical systems. Frequency- domain methods, long dominant, have been complemented and occasionally supplanted over the past two decades by a growing collection of time-domain techniques. For example, in structural acoustics two recent procedures involve high-order expansions in time and temporal finite elements. Another noteworthy example is research on integrated microwave and optical circuits that involves electromagnetic and optical scattering and propagation theories, quantum electronics, and solid state physics. At the symposium, the efficiency, accuracy, and areas of applicability of time-domain and frequency-domain computational procedures will be discussed. The interplay of time- and frequency-domain computational procedures and experimental procedures will be addressed with regard to the future goal of comparing these. The emphasis will be on the relationship and synergy between time-domain methods and frequency-domain methods rather than on their individual advantages. The design and control of large-scale structures are topics of high military and civilian relevance. The main goals of the symposium are to clarify the current relationship between time-domain and frequency-domain methods, to point out opportunities for future development of these methods, and to foster progress in understanding the behavior of large-scale structures. Speakers include: J. Tinsley Oden (Texas Institute for Computational and Applied Mathematics), Hermann A. Haus (Department of Electrical Engineering, Massachusetts Institute of Technology), Adrianus T. De Hoop (Laboratory of Electromagnetic Research, Delft University of Technology), Richard Ziolkowski (Department of Electrical Engineering, University of Arizona), Ira Dyer (Department of Ocean Engineering, Massachusetts Institute of Technology), Vijaya V. Shankar (Rockwell International Science Center), Thomas J. R. Hughes (Mechanical Engineering Department, Stanford University), Alan R. Mickelson (Department of Electrical Engineering, University of Colorado at Boulder), Ted B. Belytschko (Department of Mechanical Engineering, Northwestern University), Lakshman Tamil (University of Texas at Dallas), P. M. Pinsky (Department of Civil Engineering, Stanford University), and Edward H. Newman (Department of Electrical Engineering, Ohio State University). Date and place: September 26-27, 1994 in the Lecture Room at the National Academy of Sciences, 2101 Constitution Avenue, N.W., Washington, DC. Registration is free, but please register in advance due to limited seating. Information: Barbara Wright, Board on Mathematical Sciences, National Research Council, NAS 315, 2101 Constitution Avenue, NW, Washington, DC 20418-0001, INTERNET: bms@nas.edu, FAX: 202-334-1597, Tel: 202-334-2421. ------------------------------ From: P.M. Pardalos Date: Wed, 4 May 94 12:28:07 EDT Subject: Parallel Processing of Discrete Optimization Problems DIMACS Workshop on Parallel Processing of Discrete Optimization Problems April 28--29, 1994 Organizers: P.M. Pardalos Department of Industrial and Systems Engineering, University of Florida M.G.C. Resende and K.G. Ramakrishnan, AT&T Bell Laboratories, Murray Hill In the context of the 1993-1994 DIMACS special year on Parallel Computing, a two-day workshop entitled "Parallel Processing of Discrete Optimization Problems" was held on April 28--29. The workshop featured twenty invited speakers from Europe and North America. All abstracts of the talks are contained in the DIMACS Technical Report TR 94-20 (available by ftp). The talks in this workshop have covered a wide spectrum of algorithms and applications in parallel processing of discrete optimization and related problems. A DIMACS volume with complete refereed papers from the workshop will be also published by the American Mathematical Society. The workshop was sponsored by DIMACS with funds from National Science Foundation and The New Jersey Commission on Science and Technology. ------------------------------ From: Nick Higham Date: Fri, 6 May 94 11:45:50 BST Subject: Manchester Linear Algebra and Applications Conference THE INSTITUTE OF MATHEMATICS & ITS APPLICATIONS In conjunction with the Manchester Centre for Computational Mathematics Linear Algebra and Its Applications Monday 10th to Wednesday 12th July, 1995 University of Manchester CALL FOR PAPERS The conference aims to cover the latest developments in numerical linear algebra, matrix theory and applications of linear algebra. It immediately follows ICIAM 95 in Hamburg. The conference will consist of two and a half days of invited and contributed talks and posters, with an excursion on the Tuesday afternoon and a conference dinner on Tuesday evening. This notice is a call for papers (a longer, LaTeX version is available by anonymous ftp from the location described below). An application form to attend the conference will be available early in 1995. ORGANIZING COMMITTEE N. J. Higham (Chairman, University of Manchester), I. S. Duff (Rutherford Appleton Laboratory and CERFACS), R. Fletcher (University of Dundee), T. L. Freeman (University of Manchester), S. J. Hammarling (NAG Ltd., Oxford), N. K. Nichols (University of Reading). INVITED SPEAKERS AND PROVISIONAL TITLES INCLUDE 40 MINUTE TALKS: R. Brualdi (Madison), ``Combinatoric matrix theory''; J. W. Demmel (Berkeley); G. H. Golub (Stanford); P. C. Hansen (UNI.C, Denmark), ``Regularization of large-scale discrete ill-posed problems''; R. A. Horn (Utah), ``Hadamard products, unitarily invariant norms, and perturbation bounds for the polar decomposition''; G. Strang (MIT), ``Teaching of linear algebra''; H. van der Vorst (Utrecht); P. Van Dooren (Urbana, Illinois); A. J. Wathen (Bristol), ``Iterative solution of large, sparse linear systems arising in PDEs''; M. H. Wright (AT&T Bell Labs), ``Linear algebra in optimization''. 30 MINUTE TALKS: Z. Bai (Kentucky); A. Edelman (MIT); N. I. M. Gould (Rutherford Appleton Lab.), ``Linear algebra in optimization''; D. J. Higham (Dundee); N. Mackey (SUNY Buffalo), ``Convergence of Jacobi-like methods for the symmetric eigenproblem''; R. Mathias (College of William & Mary), ``Accurate eigenvalue computations''; H. Park (Minnesota); D. Ruiz (CERFACS); B. Smith (UCLA). CALL FOR PAPERS AND POSTERS: In addition to the invited talks, there will be poster sessions and 20 minute contributed talks. The deadline for receipt of abstracts is 31 December 1994. Contributed speakers are required to register for the conference and therefore must pay the conference fee, and, if required, the residential fee. There are two ways to submit an abstract: (1) Obtain a reply form from the IMA at the address shown below, and return it, with the abstract, to the IMA. (2) Submit an abstract by email. You need to send by email to laa95@ma.man.ac.uk (a) a completed ASCII version of the reply form, (b) an abstract prepared in LaTeX using the style file ima-abst.sty. You will need to download by anonymous ftp from vtx.ma.man.ac.uk or cholesky.ma.man.ac.uk (IP numbers 130.88.16.2, 130.88.16.9) the files pub/laa95/reply.txt (Electronic reply form) pub/laa95/ima-abst.sty (LaTeX style file for abstract) pub/laa95/ima-abst.tex (Example abstract showing required format) pub/laa95/manchester.tex (General information on Manchester) Address for correspondence (please note that the IMA is not yet on the Internet): Miss Pamela Irving, The Conference Officer The Institute of Mathematics and Its Applications Catherine Richards House 16 Nelson Street Southend-on-Sea Essex, SS1 1EF UK tel: 0702 354020, fax: 0702 354111 ------------------------------ From: John W. Barrett Date: Fri, 6 May 94 14:45:22 bst Subject: Postdoctoral Position at Imperial College London POSTDOCTORAL RESEARCH POSITION A Postdoctoral Research Assistant is required to work with Dr. John W. Barrett (j.barrett@ic.ac.uk) for 2 years on an SERC (EPSRC) project Finite Element Approximation of Some Problems in Nonlinear Elasticity and Non-Newtonian/Viscoelastic Flows The starting salary is in the range 17,320 - 20,169 UK pounds (inclusive of London Weighting). Applicants should send a CV and the name of two referees to Dr. John W. Barrett, Department of Mathematics, Imperial College Of Science, Technology and Medicine, 180 Queens Gate, London SW7 2BZ, UK. Closing date for applications is 31 May 1994. Starting date before 1 October 1994. ------------------------------ End of NA Digest ************************** -------