Subject: NA Digest, V. 94, # 30 NA Digest Sunday, July 24, 1994 Volume 94 : Issue 30 Today's Editor: Cleve Moler The MathWorks, Inc. moler@mathworks.com Today's Topics: Schwarz-Christoffel Toolbox for Matlab Looking for SMAC Navier Stokes Codes Matrix Spectrum Problem Prolate Spheroidal Functions MATLAB Primer, 4th Edition Parallel Processing PC Boards? New Report Series from ANU Date Change for Copper Mountain Multigrid Conference Numerical Methods Conference in Bulgaria IMACS Symposium on Iterative Methods Course on Parallel CFD in Stuttgart EURO-PVM Call for Papers Post Doc at Surrey, UK Visitors and Post Docs, Univ. of Queensland Contents, SIAM Scientific Computing Contents, Control, Signals and Systems Contents, Linear Algebra and its Applications Contents, Journal of Approximation Theory 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: Toby Driscoll Date: Mon, 18 Jul 1994 06:01:34 -0400 Subject: Schwarz-Christoffel Toolbox for Matlab Update of the Schwarz-Christoffel Toolbox for Matlab I've recently completed some significant additions to the Schwarz-Christoffel Toolbox for Matlab. The Schwarz-Christoffel Toolbox for Matlab 4 is a collection of M-files for the interactive computation and visualization of Schwarz-Christoffel conformal maps. The Schwarz-Christoffel transformation is a formula for a conformal map from the upper half-plane to the interior of a polygon, which may have slits or vertices at infinity. The transformation can also be modified to produce maps from the unit disk, an infinite strip, or a rectangle, or from the disk to the exterior of the target polygon. Major features of the toolbox include: Graphical input of polygons Solution of the parameter problem for half-plane, disk, strip, rectangle, and exterior maps Computation of forward and inverse maps Adaptive plotting of images of orthogonal grids for visualization Command-line and graphical user interfaces Online and Postscript documentation The toolbox requires Matlab 4.1 or later, except under MS-Windows, where version 4.0 is sufficient. Little Matlab expertise is required. Version 1.2 has several improvements over version 1.0, most notably the ability to work with maps from a strip or a rectangle. This capability is useful when dealing with elongated polygons. There are also improvements in speed and in the graphical interface, including the drawing routine. The Schwarz-Christoffel Toolbox can be obtained by anonymous ftp to ftp.cs.cornell.edu, in the directory pub/driscoll/SC-Toolbox, or at the MathWorks ftp site, ftp.mathworks.com, in the directory pub/contrib/misc/sct-12. Version 1.2 of the toolbox is available in the shar file sct-12.sh, and the Postscript documentation is in the file sct-guide.ps. Toby Driscoll Center for Applied Mathematics Cornell University Ithaca, NY 14853 Phone: (607) 255-8272 email: driscoll@na-net.ornl.gov ------------------------------ From: Barak Galanti Date: Tue, 19 Jul 1994 01:47:49 +0200 Subject: Looking for SMAC Navier Stokes Codes Dear NA-Netters, I am looking for codes implementing the SMAC (Simplified Marker-and-Cell) for incompressible Navier Stokes equation in any geometry and boundary conditions. Source codes in Fortran or C are mostly convenient, but any other pointer or reference is also appreciated. Thanks in advance, Barak Galanti ------------------------------ From: Stuart Doole Date: Wed, 20 Jul 1994 20:07:27 +0000 (BST) Subject: Matrix Spectrum Problem Eigenvalues/ Matrix Spectrum problem My colleague and I have been looking at a wave propagation problem and currently are faced with the following type of matrix: [ ] [ 0 I ] [ ] [ -C -B ] [ ] where I is the identity matrix C is a diagonal matrix with positive entries B is a symmetric matrix How much can be said about the spectrum/eigenvalues of the above matrix if no other information is known. (The general form of the entries of C and B are known but the stated properties seem to be the only apparent ones). General enquiries amongst friends have either drawn a blank or the response that nothing definite can be said. Alternatively, one might ask about the system A'' + B*A' + C*A =0 where A is a vector and wonder about the stability theory. Any useful references or ideas would be warmly appreciated. Stuart Doole Dept of Engineering Maths Bristol University U.K. email: stuart.doole@bristol.ac.uk ------------------------------ From: Ira Hammerman Date: Thu, 21 Jul 94 11:13:34 +0300 Subject: Prolate Spheroidal Functions Is there code available for dealing with Prolate Spheroidal Functions? Thank you, Ira Hammerman ------------------------------ From: Kermit Sigmon Date: Thu, 21 Jul 94 10:14:46 EDT Subject: MATLAB Primer, 4th Edition The Fourth Edition of the MATLAB Primer will be available in mid-August 1994 from CRC Press. Features of the new edition include: New compact, reader-friendly, bound format. Features of Version 4.2 of MATLAB blended into the text. Substantial new section on the Symbolic Math Toolbox. Extensive general revision and reformatting. A fine-grained Table of Contents and detailed Index. Same character and purpose of of the earlier editions: (To help students and others begin to use MATLAB) Ordering Information: Mail Orders (both national and international): CRC Press, Inc. 2000 Corporate Blvd., N.W. Boca Raton, FL 33431 USA Telephone Orders: Continential USA, except Florida: 1-800-272-7737 Florida and outside Continential USA: 1-407-994-0555 The expected price is $12.95. The MATLAB Primer is no longer available as TeX source. ------------------------------ From: Roger Haggard Date: Fri, 22 Jul 1994 14:41:45 -0500 (CDT) Subject: Parallel Processing PC Boards? I am looking for some kind of parallel processing board that will plug into a standard IBM-compatible Personal Computer to provide a significant speedup of some computation-intensive code. I seem to remember some ads for I860 or I960 or transputer boards somewhere, but now I cannot find them. Any pointers would be very helpful. Thanks, Dr. Roger L. Haggard, Assistant Professor EE Department, Box 5004 FAX: (615)372-6172 Tennessee Tech University Email: RLH0750@TNTECH.EDU Cookeville, TN 38505 Phone: (615)372-3453 ------------------------------ From: Markus Hegland Date: Thu, 21 Jul 1994 15:38:43 +1000 Subject: New Report Series from ANU New report series at ANU in scientific computing The "Area 4 Working Note Series" have resulted from a collaboration bewteen the Australian National University (ANU) and Fujitsu Ltd. Japan. The software developed in this collaboration is incorporated in the Fujitsu mathematical library or SSLII/VPP on the VPP500 series. Authors of the Area 4 Working Notes include Richard P. Brent, Andrew J. Cleary, Markus Hegland, Zbigniew Leyk and Mike Osborne. They cover various topics from numerical linear algebra, FFTs and random number generation. The Area 4 Working Note Series can be accessed with Mosaic using URL file://thrain.anu.edu.au:/pub/Area4_Working_Notes/working_notes.html Further information can be obtained from Markus Hegland Program in Advanced Computation CMA, School of Mathematical Sciences Phone: + 61 (0)6 249 4405 and CSL, Res. Sch. Inf. Sci. Eng. Phone: + 61 (0)6 249 3011 Australian National University Fax: + 61 (0)6 249 5549 CANBERRA ACT 0200 Email: Markus.Hegland@anu.edu.au Australia ------------------------------ From: Steve McCormick Date: Wed, 20 Jul 94 20:26:26 -0600 Subject: Date Change for Copper Mountain Multigrid Conference CHANGE OF DATES FOR COPPER MOUNTAIN CONFERENCE ON MULTIGRID METHODS Due to incorrect estimates by Copper Mountain Resorts of their low season schedule, we have found it advisable to move the conference back one week. We apologize if this has caused any inconvenience. However, we will also take this opportunity to change the cost of student registration: it is now gratis. Please encourage students to attend and/or submit a paper to the student competition! CALL FOR PAPERS COPPER MOUNTAIN CONFERENCE ON MULTIGRID METHODS Copper Mountain, Colorado April 2 - April 7, 1995 ORGANIZING INSTITUTIONS The University of Colorado Front Range Scientific Computations, Inc. The Society for Industrial and Applied Mathematics SPONSORS Department of Energy National Aeronautics and Space Administration CONFERENCE CHAIRMEN Tom Manteuffel and Steve McCormick, University of Colorado PROGRAM COMMITTEE Joel Dendy, Los Alamos National Laboratory Van Henson, Naval Postgraduate School Jan Mandel, University of Colorado at Denver Duane Melson, NASA Langley Seymour Parter, University of Wisconsin Joseph Pasciak, Brookhaven National Laboratory John Ruge, University of Colorado at Denver Klaus Stueben, Gesellschaft f. Math. u. Datenverarbeitung Pieter Wesseling, Delft University Olof Widlund, Courant Institute WORKSHOP CHAIRMAN Paul Frederickson, RIACS CIRCUS CHAIRMAN Craig Douglas, IBM/CERFACS/Yale SPECIAL FEATURES Circus: forum for late-breaking results Workshops: informal discussions on topics of interest Student Paper Competition: travel support and special session Proceedings: NASA Conference Publication Special Journal Publication of Proceedings: to be arranged CONFERENCE DEADLINES Student Papers Dec. 1, 1994 Abstracts Jan. 1, 1995 Lodging Reservations Feb. 28, 1995 Early Registration Feb. 28, 1995 Papers for Proceedings Apr. 2, 1995 (at conference) CIRCUS AND WORKSHOPS Anyone who wants to give a talk and will not be in the regular session may do so at one of the Circus sessions. Each session will begin by asking who wishes to speak and setting the Circus schedule accordingly. To provide a more informal atmosphere for discussion, there will also be time set aside for Workshops on specific topics of interest. The schedule for the Circus and Workshops will be determined each day according to demand. STUDENT PAPER COMPETITION Travel and lodging assistance will be awarded to students judged to have the best research papers. Papers with original research due mainly to the student must be received before December 1, 1994. They must be singly authored and no more than 10 pages in length. Sending only an abstract is unacceptable. A panel of judges will determine the best papers. Authors of the three best papers will be given a travel stipend, free lodging, and registration, and will be expected to present their papers in a special session at the conference. Several other students who participate in the competition may be awarded free lodging and registration, depending on availability of funds. FORMAT There will be morning and late afternoon lectures of approximately 25 minutes each. Evenings will be reserved for the Circus and Workshops. Afternoons will be open for more informal workshops and discussions. HOW TO CONTRIBUTE TO THE REGULAR SESSION Potential contributors should submit an abstract of no more than 200 words by hard copy regular mail or, preferrably, by postscript or ASCII email to: CCMM95 University of Colorado Program in Applied Math CB 526 Boulder CO 80309-0526 ccmm@boulder.colorado.edu If you submit your abstract by email, please do NOT send a TeX or LaTeX file. It will be returned if you do. Instead, please send either a ps file or an ASCII file. Authors will be notified of the status of their abstract by the end of January. Those notified of acceptance may then submit their paper to the proceedings by bringing hard copy to the conference. Authors who wish to make their paper generally available will be encouraged to submit a ps file to mgnet. DEADLINE FOR SUBMISSION OF ABSTRACTS IS JANUARY 1, 1995 FURTHER INFORMATION OR QUESTIONS REGARDING LOGISTICS, REGISTRATION, ETC. MAY BE DIRECTED TO: ccmm@boulder.colorado.edu YOU MAY ALSO CONTACT: Steve McCormick University of Colorado Program in Applied Math CB 526 Boulder CO 80309-0526 (303)492-0662 THE SCHEDULE OF TALKS MAY BE OBTAINED IN FEBRUARY BY ACCESSING: ccmminfo@boulder.colorado.edu ------------------------------ From: Ivan Dimov Date: Fri, 22 Jul 1994 09:22:03 +0200 Subject: Numerical Methods Conference in Bulgaria P R O G R A M M E of the 3rd International Conference on NUMERICAL METHODS AND APPLICATIONS Sofia, 21-26 August, 1994 (Key and Invited lectures) MONDAY, AUGUST 22 9:00 - 9:15 Opening of the Conference 9:15 - 10:00 Z. Zlatev, I. Dimov, K. Georgiev, Optimizing large air pollution models on high speed computers. 10:30 - 11:15 V. Thomee On the numerical solution of an evolution equation with memory. 11:15 - 12:00 H. Chen, R. Ewing, R. Lazarov, Superconvergence of the mixed finite element approximations to parabolic equations. 12:00 - 12:35 I. Dimov, A. Karaivanova, Overconvergent Monte Carlo methods for density-function modelling using B-splines. MONDAY, AUGUST 22 14:00 - 14:45L. Xanthis, The method of arbitrary lines: recent advances in computational mathematics and mechanics. 14:45 - 15:20 Chr. Christov, A. Ridha, Splitting scheme for iterative solution of biharmonic equation. Application to 2D 15:20 - 15:55 T. Rusten, A numerical method for solution of partial differential equations modelling of the solidification of a binary alloy. 16:20 - 17:05 T.F. Chan, B. Smith, J. Zou, Multigrid and domain decomposition methods for unstructured meshes. 17:05 - 17:40 I. Lirkov, S. Margenov, On circulant preconditioning of elliptic problems in L-shaped domains. 17:40 - 18:15 B. Philippe, M. Sadkane, Arnoldi s procedure and angles between Krylov subspaces. TUESDAY, AUGUST 23 9:00 - 9:35 Bl. Sendov, Parallel approximation with self-similar functions. 9:35 - 10:10S. Dimova, M. Kaschiev, M. Koleva, D. Vasileva, Numerical analysis of blow-up nonradial solutions of a nonlinear heat-transfer equation. 10:30 - 11:15 J. Bramble, A least squares approach based on a discrete minus one inner product for first order systems. 11:15 - 12:00 O. Axelsson, M. Neytcheva, The Short Length AMLI Method-II. Rate of convergence. 12:20 - 12:40 J.Claver, Fine and medium parallel algorithms for the Lyapunov's equations on a shared memory multiprocessor. TUESDAY, AUGUST 23 14:00 - 14:45 R. Ewing, Yu. Kuznetsov, R. Lazarov, S. Maliassov, Preconditioning of nonconforming finite element approximations of second order elliptic problems. 14:45 - 15:20 P. Vassilevski, O. Axelsson, A two-level stabilizing framework for interface domain decomposition preconditioners. 15:20 - 15:55 T. Mathew, A splitting method for parabolic problems using domain decomposition. 16:20 - 16:55 G. Bourdin, J. Greenberg, A. Le Roux, A numerical scheme for a quadratic porous media equation. 16:55 - 17:30 J. Wang, T. Mathew, Mixed finite element method over quadrilaterals. 17:30 - 18:05 P. Vabishchevich, Parallel domain decomposition algorithms for time-dependent problems of mathematical physics. WEDNESDAY, AUGUST 24 9:00 - 9:35 G. Gibson, C. Glasbey, D. Elston, Monte Carlo evaluation of multivariate normal integrals and sensitivity to variate ordering. 9:35 - 10:10 C. Jacoboni, M. Nedjalkov, Monte Carlo modelling of quantum electron transport in semiconductor structures. Simulations and Scientific Computing 10:30 - 11:05 G. De Pietro, On the implementation of numerical methods on parallel computers. 11:05 - 11:40 M. Kartalev, M. Kaschiev, D. Koitchev, Numerical Modeling of stationary two-dimensional magnetosphere. 11:40 - 12:15 M. Chacha, St. Radev, R. Occeli, L. Tadrist, Liquid jet disintegration analysis: direct numerical simulation. 12:15 - 12:50 A. Liolios, A bounding numerical approach to seismic interaction between adjacent buildings. THURSDAY, AUGUST 25 9:00 - 9:45 O. Spaniol, Ch. Engel, Parallel processing of communication protocols. 9:45 - 10:30 D.J. Evans, Parallel solution of linear systems by implicit matrix elimination. 10:50 - 11:25 W. Schade, V. Jossifov, I. Koepp, A parallelized placement algorithm for printed circuit board design. 11:25 - 12:00 H. Kuchen, H. Stolze, A data parallel functional language for distributed memory machines. 12:00 - 12:35 G. Megson, V. Aleksandrov, I. Dimov, A fixed sized regular array for matrix inversion by Monte Carlo method. FRIDAY, AUGUST 26 9:00 - 9:45 G. Milovanovic, Summation of slowly convergent series via quadratures. 9:45 - 10:20 J.-F. Carpraux, S. Godunov, S. Kuznetsov, Stability of the Krylov basis and subspaces. 10:20 -10:55 A.A. Samarskij, Stability of difference schemes. 11:15 - 12:00 M. Vajtersic, Two classes of efficient hypercube orderings for SVD. 12:00 - 12:35R. Beauwens, L. Dujacquier, S. Hitimana, M.monga-Made, MILUfactorizations for 2-processor orderings. ------------------------------ From: Svetozar D. Margenov Date: Tue, 19 Jul 94 17:47:16 PDT Subject: IMACS Symposium on Iterative Methods Second IMACS International Symposium on Iterative Methods in Linear Algebra June 18-21, 1995, Blagoevgrad, Bulgaria Organized by: The International Association for Mathematics and Computers in Simulation and Bulgarian Academy of Sciences(BAS) International Program Committee: OWE AXELSSON(KUN,Nijmegen,The Netherlands), RANDOLPH BANK(UCSD, La Jolla, USA), ROBERT BEAUWENS(ULB, Brussels, Belgium), TONY CHAN(UCLA, Los Angeles, USA), FRANCOISE CHATELIN(IBM, Paris, France), IVAN T. DIMOV(CICT at BAS, Sofia, Bulgaria), STEFKA DIMOVA(Sofia University, Bulgaria), JACK DONGARRA(University of Tennessee,USA), IAIN DUFF(Rutherford Appleton Lab., Oxon, UK), RICHARD E. EWING (TA & MU, College Station, USA), ROLAND FREUND(AT&T Bell Lab., Murray Hill, USA), KRASSIMIR GEORGIEV(CICT at BAS, Sofia, Bulgaria), APOSTOLOS HADJIDIMOS (Purdue University, USA), SVEN HAMMARLING(NAG, Oxford, UK), PIET HEMKER (CWI, Amsterdam, The Netherlands), OLEG ILIEV (IM at BAS, Sofia, Bulgaria), MICHAIL KASCHIEV(IM at BAS, Sofia, Bulgaria), DAVID KINCAID (CNA, University of Texas at Austin, USA), YOUSEF SAAD (University of Minnesota, Minneapolis, USA), HARRY YSERENTANT (Univ. of Tuebingen, Germany), HENK VAN DER VORST (RUU, Utrecht, The Netherlands), JUNPING WANG(University of Wyoming, Laramie,USA), RAGNAR WINTHER(University of Oslo, Norway), DAVID H. WOOD(University of Delaware, USA) Topics: MATRIX ANALYSIS(convergence acceleration,preconditioning techniques, methods for nonsymmetric, indefinite, singular and overdetermined systems, sparse eigenproblems); APPLICATIONS to PDEs(multigrid methods, domain decomposition methods, spectral methods), systems theory, least square problems, parallel matrix computation; SOFTWARE DEVELOPMENT(sparse linear systems, sparse eigenproblems, application oriented software; on sequential machines; on parallel machines). CALENDAR Deadline for submission of abstracts (one page stating clearly the originality and importance of the results): October 1994 Notification of acceptance of the papers on the basis of the submitted abstracts mailed by: January 1995 Deadline for submission of full papers: March 1995 Notification of acceptance of full papers mailed by: April 1995 Special Sessions "The influence of high-nonnormality on the reliability of iterative methods in Computational Linear Algebra", by Francoise Chatin-Chatelin, University of Paris IX and Valerie Fraysee, CERFACS "Krilov-subspace methods for nonsymmetric and indefinite linear systems", by Roland Freund, AT & T Bell Lab., Murray Hill, USA "Iterative Monte Carlo methods", by Ivan T. Dimov, CICT at BAS, Bulgaria Robust Preconditioners" or "Industrial Problems", by Yousef Saad, University of Minnesota, Minneapolis, USA Local Organizing Committee: SVETOZAR MARGENOV and PANAYOT VASSILEVSKI Conference address: E-mail: imacs95@bgearn.bitnet Panayot S. Vassilevski or panayot@bgearn.bitnet Second IMACS Int.Symp. on Iterative Methods in Linear Algebra CICT at Bulgarian Academy of Sciences "Acad. G.Bontchev" street, block 25A 1113 Sofia, Bulgaria ------------------------------ From: Roy Williams Date: Wed, 20 Jul 1994 09:19:53 -0700 (PDT) Subject: Course on Parallel CFD in Stuttgart European Research Community On Flow Turbulence And Combustion announces: ERCOFTAC Course On Parallel Computational Fluid Dynamics Stuttgart, Germany October 17 - 20, 1994 COURSE OBJECTIVES The course is addressed to CFD specialists from research and industry who want to port their code to a parallel computer. There will be two lecturers per day, which talk each for 3 hours. The lectures deal to a large extent with implementation and programming questions as well as with experiences gained so far from parallel machines. There is less emphasis on mathematical features or computer science basics. COURSE OUTLINE Introduction to Parallel Computers Dr. Dave Emerson, Daresbury Laboratory Message Passing: PVM and MPI Dr. Hans-Georg Paap, Genias Introduction to High Performance Fortran and Fortran 90 Dr. Dieter Eppel, GKSS Research Center A General Parallelization Strategy for Multi Domain CFD Codes using C Prof. Jochem Hauser, CLE Domain decomposition for unstructured grids Dr. Roy D. Williams, Caltech Example of porting an unstructured code to a Parallel Computer Dr. Ramesh Agarwal, McDonnell Douglas Example of Porting a flow solver using structured grids to a Parallel Computer Prof. Siegfried Wagner, University of Stuttgart Practical experiences with Massively Parallel Computing Prof. Egon Krause, RWTH-Aachen ORGANIZING COMMITTEE Dr. D. Emerson, Daresbury Laboratory, UK Prof. J. Hauser, Center of Logistics and Expert Systems, Germany Prof. E.H. Hirschel, DASA, Munchen, Germany Prof. E. Krause, RWTH-Aachen, Germany Prof. S. Wagner, University of Stuttgart, Germany Dr. J.B. Vos, ERCOFTAC Coordination Center, Lausanne, Switzerland SPONSORS The course is sponsored by: European Space Agency (ESA) European Research Community on Flow, Turbulence and Combustion (ERCOFTAC) Institut fur Aero- und Gasdynamik, Universitat Stuttgart Rechenzentrum Universitat Stuttgart COURSE MATERIAL A complete set of lecture notes will be handed out at the course. REGISTRATION FEES University: 750.-DM Industry: 1000.-DM A limited amount of ERCOFTAC scholarships are available for Ph.D Students or researchers from East European countries. Please contact the local organizer for more details. The registration fee covers lunches, coffee breaks, lecture notes and a course dinner. FOR MORE INFORMATION Prof. S. Wagner Institut fur Aero- und Gasdynamik University of Stuttgart Pfaffenwaldring 21 D-70550 Stuttgart Germany Tel.: +49 711 685 34 01 FAX: +49 711 685 34 38 or Dr. Jan B. Vos ERCOFTAC Coordination Cneter IMHEF - DGM - EPFL CH-1015 Lausanne Switzerland Tel.: +41 21 693 53 05 FAX: +41 21 693 53 07 E-mail: vos@dgm.epfl.ch ------------------------------ From: Jack Dongarra Date: Thu, 21 Jul 1994 09:23:30 +0200 Subject: EURO-PVM Call for Papers First European PVM Users' Group Meeting Rome, Italy October 9-11 1994, Universita' di Roma, Rome - CALL FOR PAPERS - CALL FOR PAPERS - CALL FOR PAPERS - CALL FOR PAPERS - Sponsored by IBM European Center for Scientific and Engineering Computing Ecole Normale Superieure de Lyon CASPUR-Universita' di Roma The first European PVM Users Group Meeting will be held October 9 to 11, 1994, at the Conference Room of the University of Rome, Via Salaria 113, Rome, Italy. The meeting will provide an opportunity for European users of PVM to meet each other, share ideas and experiences, and meet some of the members of the PVM Team. The conference will include: * Invited talks by: Wolfgang Gentzsch (Genias, Germany), Vaidy Sunderam (Emory University), Bernard Tourancheau (LIP, France), ... TBD ... ... TBD ... * Contributed papers from the PVM user community. * Technical presentations by the developers of PVM. (Including a feedback session on future directions and features) * Vendor presentations on supported PVM products. * Social activities. * Tutorial Session (Sunday 9th) by: Adam Beguelin (CMU, USA), Robert Manchek (UT, USA). There will be Conference Registration/Reception at the conference location. The registration desk opens, for the tutorial session, at 9:00 AM on Sunday and at 9:00 AM on Monday for the conference. The Future Directions session ends at 17:00 PM Tuesday. COMMITTEES Program Chair: Michel Cosnard (LIP, ENS Lyon) cosnard@lip.ens-lyon.fr (+33) 7272 8080 (fax) Renzo Di Antonio (IBM ECSEC) dantonio@romesc.vnet.ibm.com (+39) 6.5966.5548 (fax) Jack Dongarra (University of Tennessee and Oak Ridge National Lab.) dongarra@cs.utk.edu (615) 974-8296 (fax) Giovanni Aloisio (Universita' di Lecce) gax@astrba.ba.cnr.it gax@ibade.ba.infn.it Organization Chair: Giorgio Richelli (IBM ECSEC) giorgio@vnet.ibm.com Frederic Desprez (LIP ENS Lyon) DESPREZ@cs.utk.edu Romano Bizzarri (CASPUR-Universita' di Roma) bizzarri@caspur.it Program Committee: Fabrizio Baiardi (Universita di Pisa), Giovanni Aloisio (Universita' di Lecce), Adam Beguelin (Carnegie Mellon University), Serge Chaumette (LABRI, Bordeaux), Marc Garbey (LAN1-Lyon), Al Geist (Oak Ridge Nat. Lab.), Marc Gengler (LITH, EPF Lausanne), Thomas Ludwig (Technische Universitaet, Muenchen), Robert Manchek (University of Tennessee), Pierre Manneback (Universit\'e Polytechnique de Mons), Vaidy Sunderam (Emory University), Piero Sguazzero (IBM ECSEC), Pavel Tvrdik (Faculty of Elec. Eng., CTU), Stephane Ubeda (Universite de Saint-Etienne). Organization Comm.: Giulia Caliari (IBM ECSEC) Salvatore Filippone (IBM ECSEC) Stefano Patarnello (IBM ECSEC) Giorgio Richelli (IBM ECSEC) Nico Sanna (CASPUR-Universita' di Roma) Call For Papers We invite everyone with PVM ideas or experiences to submit abstracts of papers and posters for possible presentation at the Users' Group meeting. List of topics includes (but is not limited to): The PVM system: Tools Libraries Extensions and Improvements Vendors Implementations Programming Environments .... Algorithms: Numerical Kernels Scheduling and Load Balancing Benchmarking and Pseudo-Applications .... Real-world Parallel Applications: CFD Image Processing Structural Analysis Chemistry Aerodynamics .... Authors are requested to submit a 4-pages extended abstract before September 15, 1994. Abstracts will be reviewed and authors notified of their acceptance by October 1. Any special equipment required for the talk should also be indicated in the abstract. Abstracts should be submitted in postscript form by e-mail to europvm@lip.ens-lyon.fr. ------------------------------ From: Philip Aston Date: Thu, 21 Jul 1994 17:09:32 +0100 (BST) Subject: Post Doc at Surrey, UK Postdoctoral Research Fellow Department of Mathematical and Computing Sciences University of Surrey, UK A postdoctoral research fellow is required to work on the project `Numerical Investigation of Turbulence in the Complex Ginzburg-Landau Equation', which is funded by the EPSRC for a period of 3 years and will be supervised by Dr P. Aston and Dr M. Bartuccelli in the Department of Mathematical and Computing Sciences, together with Dr P. Voke in the Department of Mechanical Engineering. The project involves the development of numerical methods suitable for the accurate simulation of both hard and soft turbulence in the CGL equation. The norms of the solutions will then be compared with analytical upper bounds. The relationship between the hard turbulent solutions of the CGL equation and the finite time singularities of the Nonlinear Schrodinger equation in the inviscid limit will also be considered. Applicants should have, or expect to obtain, a PhD and should have experience in either numerical analysis or nonlinear dynamical systems as well as being a competent programmer. Knowledge of Fortan and Unix would be an advantage. The appointment will on the 1A scale with starting salary in the range 13941 - 15566 pounds per annum. The anticipated starting date for the project is October 1994. Applications in the form of a curriculum vitae (two copies), including the name and address of two academic referees should be sent to the Personnel Office (SAB), University of Surrey, Guildford, Surrey GU2 5XH, UK by Friday 2 September quoting reference number 280. Further details can be obtained from the Personnel Office at the above address or by telephone on 0483-259360. Informal enquiries may be made to Dr P. Aston (P.Aston@mcs.surrey.ac.uk) or Dr M. Bartuccelli (M.Bartuccelli@mcs.surrey.ac.uk). The University is committed to an Equal Opportunities Policy. ------------------------------ From: John Holt Date: Wed, 20 Jul 94 15:17:02 EST Subject: Visitors and Post Docs, Univ. of Queensland Visitors and/or Post Docs The Centre for Industrial and Applied Mathematics and Parallel Computing Department of Mathematics The University of Queensland Queensland, Australia CIAMP staff members currently have Australian Research Council funding for a project entitled "Discrete optimisation algorithms for practical sequencing and scheduling problems arising in the transportation industry." The particular work being undertaken concerns algorithms for stochastic vehicle routing problems and the use of parallel computers for a range of methods appropriate for the combinatorial optimisation problems which arise in the scheduling of vehicles and crew. Application areas considered so far include airline crew scheduling, bus and crew scheduling, locomotive scheduling and delivery vehicle scheduling. The Centre is interested in hearing from suitably qualified people who may be interested in visiting this year or next for periods of at least 3 months to work on the project or who may be interested in applying for a post doctoral position for 12 months. Experience with one or more of set partitioning, Lagrangean relaxation or parallel algorithms for discrete optimisation problems would be an advantage. In the case of visitors, some support could be offered for people on leave from their own universities who wish to work on the project. For further information, contact: Dr John Holt CIAMP Department of Mathematics The University of Queensland Qld, 4072 AUSTRALIA email: jnh@axiom.maths.uq.oz.au Telephone: +61 7 365 3265 +61 7 365 2673 Fax: +61 7 365 1477 ------------------------------ From: SIAM Date: Tue, 19 Jul 94 13:45:42 EST Subject: Contents, SIAM Scientific Computing Contents SIAM Journal on Scientific Computing Volume 15, Number 6, November 1994 Quasi-Random Sequences and Their Discrepancies William J. Morokoff and Russel E. Caflisch A Gradient Random Walk Method for Two-Dimensional Reaction- Diffusion Equations Arthur Sherman and Michael Mascagni Computing Gaussian Likelihoods and Their Derivatives for General Linear Mixed Models Russ Wolfinger, Randy Tobias, and John Sall Thin Plate Splines with Discontinuities and Fast Algorithms for Their Computation David Lee and Jyh-Jen Horng Shiau On the Parallel Implementation of Jacobi and Kogbetliantz Algorithms Jurgen Gotze Efficient Variants of the Vertex Space Domain Decomposition Algorithm Tony F. Chan, Tarek P. Mathew, and Jian-Ping Shao Solution of the Systems Associated with Invariant Tori Approximation II: Multigrid Methods Luca Dieci and Georg Bader Performance of Several Optimization Methods on Robot Trajectory Planning Problems Joseph G. Ecker, Michael Kupferschmid, and Samuel P. Marin An Efficient Block-Oriented Approach to Parallel Sparse Cholesky Factorization Edward Rothberg and Anoop Gupta A Two-Phase Algorithm for the Chebyshev Solution of Complex Linear Equations Dirk P. Laurie and Lucas M. Venter Preconditioning for Domain Decomposition through Function Approximation Mo Mu and John R. Rice Using Krylov Methods in the Solution of Large-Scale Differential- Algebraic Systems Peter N. Brown, Alan C. Hindmarsh, and Linda R. Petzold Efficient Spectral-Galerkin Method I. Direct Solvers of Second- and Fourth-Order Equations Using Legendre Polynomials Jie Shen ------------------------------ From: Eduardo Sontag Date: Tue, 19 Jul 94 19:57:47 BST Subject: Contents, Control, Signals and Systems MATH OF CONTROL, SIGNALS, AND SYSTEMS TABLE OF CONTENTS, Vol. 7, No. 4 Tryphon Georgiou, Differential stability and robust control of nonlinear systems, pp. 289-306. Corrado Deconcini and Fabio Fagnani, Symmetries of differential behaviors and finite group actions on free modules over a polynomial ring, pp. 307-321. Daniel E. Miller and Edward J. Davison, On asymptotic model matching, pp. 322-340. A. Pastor and V. Hernandez, Differential periodic Riccati equations: Existence and uniqueness of nonnegative definite solutions, pp. 341-362. Yu-Fan Zheng and Li Cao, On general construction of reduced inverse for controlled systems, pp. 363-379. Author Index for Vol 6, p. 380 Subject Index for Vol 6, p. 381 ------------------------------ From: Richard Brualdi Date: Wed, 20 Jul 1994 13:03:17 -0500 (CDT) Subject: Contents, Linear Algebra and its Applications LINEAR ALGEBRA AND ITS APPLICATIONS Contents Volumes 208/209 Preface 1 Man-Duen Choi and Peter Rosenthal (Toronto, Ontario, Canada) A Survey of Chandler Davis 3 Fuad Kittaneh (Amman, Jordan) On Some Operator Inequalities 19 Man-Duen Choi (Toronto, Ontario, Canada), Mary Beth Ruskai (Lowell, Massachusetts), and Eugene Seneta (Sydney, Australia) Equivalence of Certain Entropy Contraction Coefficients 29 Kenneth R. Davidson and Marc S. Ordower (Waterloo, Ontario, Canada) Some Exact Distance Constants 37 V. Olevskii and M. Solomyak (Rehovot, Israel) An Estimate for Schur Multipliers in Sp-Classes 57 T. Ando (Sapporo, Japan) and F. Hiai (Mito, Ibaraki, Japan) Inequality Between Powers of Positive Semidefinite Matrices 65 Gerd M. Krause (Bielefeld, Germany) Bounds for the Variation of Matrix Eigenvalues and Polynomial Roots 73 Ludwig Elsner (Bielefeld, Germany) Perturbation Theorems for the Joint Spectrum of Commuting Matrices: A Conservative Approach 83 Michael Stewart (Urbana, Illinois) and George Cybenko (Hanover, New Hampshire) Perfect-Reconstruction Filtering With Unitary Operators and Projections 97 Stephen Pierce (San Diego, California) and Leiba Rodman (Williamsburg, Virginia) Lipschitz Properties of Some Actions of Matrix Groups 135 C. Laurie (Tuscaloosa, Alabama), B. Mathes (Waterville, Maine), and H. Radjavi (Halifax, Nova Scotia, Canada) Sums of Idempotents 175 D. Przeworska-Rolewicz (Warszawa, Poland) Remarks on Commutators With Operators Having Either Finite Nullity or Finite Deficiency 199 Avraham Feintuch (Beersheva, Israel) Gap Metric Robustness for Linear Time-Varying Systems 209 Takayuki Furuta (Tokyo, Japan) A Note on the Arithmetic-Geometric Mean Inequality for Every Unitarily Invariant Matrix Norm 223 Don Hadwin (Durham, New Hampshire) An Algebraic Version of the Multiplication Property of the Fredholm Index 229 Alexander Markus (Beer-Sheva, Israel) and Vladimir Matsaev (Ramat-Aviv, Israel) The Failure of Factorization of Positive Matrix Functions on Noncircular Contours 231 Sujit Kumar Mitra (New Delhi, India) Separation Theorems 239 Jin-Hsien Wang (Kaohsiung, Taiwan, Republic of China) and Pei Yuan Wu (Hsinchu, Taiwan, Republic of China) Difference and Similarity Models of Two Idempotent Operators 257 T. Ando (Sapporo, Japan) and Richard A. Brualdi (Madison, Wisconsin) Sign-Central Matrices 283 G. W. Stewart (College Park, Maryland) Perturbation Theory for Rectangular Matrix Pencils 297 C. C. Paige (Montreal, Quebec, Canada) and M. Wei (Shanghai, China) History and Generality of the CS Decomposition 303 Mihaly Bakonyi (Atlanta, Georgia) and Charles R. Johnson (Williamsburg, Virginia) Invertible Completions of Partial Operator Matrices: The Nonsymmetric Case 327 R. McEachin (Fort Wayne, Indiana) Analyzing Specific Cases of an Operator Inequality 343 Rajendra Bhatia (New Delhi, India) First and Second Order Perturbation Bounds for the Operator Absolute Value 367 Ilya Spitkovsky (Williamsburg, Virginia) Once More on Algebras Generated by Two Projections 377 Khakim D. Ikramov and Vadim N. Chugunov (Moscow, Russia) On the Teng Inverse Eigenvalue Problem 397 Seppo Hassi and Kenneth Nordstrom (Helsinki, Finland) On Projections in a Space With an Indefinite Metric 401 M. Omladic (Ljubljana, Slovenia), M. Radjabalipour (Kerman, Iran), and H. Radjavi (Halifax, Nova Scotia, Canada) On Semigroups of Matrices With Traces in a Subfield 419 W. O. Amrein (Geneva, Switzerland) and Kalyan B. Sinha (New Delhi, India) On Pairs of Projections in a Hilbert Space 425 Karl Gustafson (Boulder, Colorado) Antieigenvalues 437 S. Friedland (Chicago, Illinois) and M. Katz (Haifa, Israel) On the Maximal Spectral Radius of Even Tournament Matrices and the Spectrum of Almost Skew-Symmetric Compact Operators 455 Ren-Cang Li (Berkeley, California) On Eigenvalue Variations of Rayleigh Quotient Matrix Pencils of a Definite Pencil 471 Daniel Alpay (Beer-Sheva, Israel), Joseph A. Ball (Blacksburg, Virginia), Israel Gohberg (Tel-Aviv, Ramat-Aviv, Israel), and Leiba Rodman (Williamsburg, Virginia) The Two-Sided Residue Interpolation in the Stieltjes Class for Matrix Functions 485 J. A. Dias Da Silva (Lisboa, Portugal), Daniel Hershkowitz (Haifa, Israel), and Hans Schneider (Madison, Wisconsin) Sum Decompositions of Symmetric Matrices 523 P. A. Fuhrmann (Beer-Sheva, Israel) On Skew Primeness of Inner Functions 539 Author Index 553 ------------------------------ From: Marilyn Radcliff Date: Fri, 22 Jul 1994 08:31:43 -0400 (EDT) Subject: Contents, Journal of Approximation Theory Table of Contents Journal of Approximation Theory, Volume 78, Number 2, August 1994 Roland Durier. The Fermat-Weber Problem and Inner Product Spaces, 161-173. T. N. T. Goodman. Interpolatory Hermite Spline Wavelets, 174-189. Thomas Bagby and Norman Levenberg. Bernstein Theorems for Elliptic Equations, 190-212. Xin Li and E. B. Saff. Local Convergence of Lagrange Interpolation Associated with Equidistant Nodes, 213-225. D.-W. Buyn and S. Saitoh. Approximation by the Solutions of the Heat Equation, 226-238. Mao-Dong Ye and Ding-Xuan Zhou. A Class of Operators by Means of Three-Diagonal Matrices, 239-259. Christian Berg. Markov's Theorem Revisited, 260-275. Radwan Al-Jarrah and Sayel Ali. Interpolation of Entire Functions Associated with Some Freud Weights, II, 276-285. Robert B. Gardner and N. K. Govil. On the location of the Zeros of a Polynomial, 286-292. Note Hidefumi Kawasaki. A Second-Order Property of Spline Functions with One Free Knot, 293. Marilyn Radcliff radcliff@math.ohio-state.edu Department of Mathematics radcliff@ohstpy.bitnet The Ohio State University 1-(614)-292-3317 (office) 231 West Eighteenth Avenue 1-(614)-292-4975 (department) Columbus, Ohio 43210-1174, U.S.A. 1-(614)-292-1479 (FAX) ------------------------------ End of NA Digest ************************** -------