Subject: NA Digest, V. 93, # 40 NA Digest Sunday, October 31, 1993 Volume 93 : Issue 40 Today's Editor: Cleve Moler The MathWorks, Inc. moler@mathworks.com Today's Topics: Delaunay Triangulation Solver Sought A Linear Algebra Problem? Experience with Mac-based Computer Labs Change of Address for Michele Benzi New Address for Georg Heinig Change of Address for Karel in 't Hout Two One day courses -- Matlab, Mathematica Help With Bio-Medical Computing Sought Korteweg-de Vries Software Available Transformations of Linear Second Order ODEs. New Book on Convex Analysis and Minimization Algorithms Templates for the Solution of Linear Systems Multiconference on Computer Simulation SIAM Conference on Applied Linear Algebra Research Fellowship at Sandia Position at SUNY Stony Brook Householder Fellowship at Oak Ridge Postdoctoral Position at North Carolina State Contents: SIAM Numerical Analysis 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: F. M. G. Deza Date: 22 Oct 1993 11:56:49 +0100 Subject: Delaunay Triangulation Solver Sought I am hoping to find a solver for the Delaunay triangulation of a set of distinct arbitrarily distributed points in a plane. Any language okay, FORTRAN preferred. Would be grateful for any suggestions people might have. dezaf@ksepl.nl Fancois Deza ------------------------------ From: Bill Gear Date: Fri, 22 Oct 93 08:46:47 EDT Subject: A Linear Algebra Problem? Here is an example of a general classs of problems: this one is stated in two dimensions: Given a set of points P(i) in the plane which it is believed lie on a collection of lines (number of lines unknown, but obviously significantly less than half the number of points). Of course, there are some errors in the given coordinate values of the points. Problem: determine the lines. [The problem is not well specified, and, at this stage, the specification could be partially dependent on available algorithms. For example, one could ask for the minimum number of lines subject to an error bound in a suitable norm. That smells combinatorial.] Bill Gear President NEC Research Inst. Inc. 4 Independence Way Princeton, NJ 08540 Inet: cwg@research.nj.nec.com UUCP: princeton!nec!cwg PHONE: (609) 951-2500 FAX : (609) 951-2480 ------------------------------ From: Jim Daniel Date: Fri, 22 Oct 93 10:45:13 -0500 Subject: Experience with Mac-based Computer Labs Our Departmental computer gurus are attacking the University decision to create more Mac labs for students (software might include Mathematica, Systat, MATLAB, etc.) on the grounds that "it is well known that Mac labs all over the country fail" because students intentionally or unintentionally mess them up---with viruses, by changing Configuration files, modifying defaults, etc (all the stuff that you can do on user-friendly systems). It has been my uninformed impression that Mac labs were generally quite successful. Can anybody provide any information on this based on their own institution's experience? Is it necessary to have Unix labs in order to be successful, however unfriendly they might be? Jim Daniel Actuarial Studies Mathematics Department University of Texas Austin, TX 78712 daniel@math.utexas.edu 512/471-7168 ------------------------------ From: Michele Benzi Date: Fri, 22 Oct 93 18:16:43 EDT Subject: Change of Address for Michele Benzi I am moving from N.C. State University to take up a position at the University of Bologna. Beginning November 1, 1993 my address will be the following: Michele Benzi Dipartimento di Matematica Universita' di Bologna P.zza di P.ta San Donato, 5 40127 Bologna Italy E_mail address: benzi@dm.unibo.it ------------------------------ From: Georg Heinig Date: 25 Oct 93 14:31:21 GMT3 Subject: New Address for Georg Heinig My new address is: Georg Heinig, Dept.of Mathematics KUWAIT UNIVERSITY P.O.Box 5969, Safat 13060, KUWAIT. New e-mail: georg@math-1.sci.kuniv.edu.kw ------------------------------ From: K. in 't Hout Date: Tue, 26 Oct 1993 14:32:59 +0100 Subject: Change of Address for Karel in 't Hout My stay at the University of Auckland has ended and now I am working at the CWI in Amsterdam. My current address is: K. in 't Hout Department of Numerical Mathematics CWI P.O. Box 94079 1090 GB Amsterdam THE NETHERLANDS Telephone: +31 20 5924102 ------------------------------ From: E. Smith Date: Thu, 28 Oct 93 09:25 +0100 (BST) Subject: Two One day courses -- Matlab, Mathematica There are still some places available on the following courses: 16 November 1993 MATLAB: a titorial introduction 17 November 1993 Mathematica: a tutorial introduction For further details contact Mrs. E. Smith Applied Mathematics and Operational Research Group, School of Defence Management, Royal Military College of Science, Shrivenham, Swindon, Wilts. SN6 8LA. Tel: (0793) 785317 Fax: (0793) 782179 Email: smithe@uk.ac.cran.rmcs ------------------------------ From: Alan Miller Date: Thu, 28 Oct 93 09:37:07 -0700 Subject: Help With Bio-Medical Computing Sought We are a small Bio-Medical Engineering Group here in the Department of Electronics Engineering, Chinese University of Hong Kong. We have one memeber of staff, soon to be two, one postdoc, four PhD candidates and one Masters Candidate. Since we are such a small group, and because people do not actually know what we do (they still think we design wheelchairs or something), we are lowest in the faculties priorities for computing resources, software purchases and general support. One of our models of the current and voltage distributions inside the thorax for an injected current takes over a week to run on our DEC workstaiton! We are engaged in somewhat unique work, well of the beaten track and as such the normal available software code is not up to spec. Recently the faculty got delivered a DEC MPP12000 super-computer and it is now up an running, further to this, Sun may be donating a SPARC1000 to the lab,providing that we can show that we really need it, otherwise we get a SPARC10 and the Dean's own department get to keep the sun sparc1000, incidently its the Dean's decision who gets the SPARC1000. At this present time we need to find suitable software for both the MPP12000 and SPARC10/1000 to show that we can actually exploit their capabilities. Therefore does anyone know or have suitable software that could be ftp/ip and installed here? I personally have to model the acoustical shock wave response of the Human Thorax and model the resonance to detect disorder, this system is non-linear, even chaotic at time, inhomogenous, and time VARIANT, as well as different for different people, there are also no papers, no books and no software, so I do not have time to sit and spend 2 years writting everything I need. We are especially interested in the following 1. General Bio-Medical Engineering Software. 2. Monte Carlo Modelling 3. CHAOS Dyanamics**************** 4. Non-Linear system modelling***** 5. Acoustical propagation (inside human thorax!) 6. N-Degree of freedom resonance modelling software 7. Electrical Bio-Impedance. 8. EEG,ECG Anaysis software. 9. Mathematics Libraries/tools etc*** 10. WAVELET ANALYSIS ********** 11. Digital Signal Processing. If someone has "inverse problem" software that could map EEG signals onto a plane to show the electrical activity of the brain then we would be very interested indeed. Any help, advice or general comments would be most welcome. Thanks, Alan Miller Bio-Medical Lab Chinese University of Hong Kong. ------------------------------ From: William E. Schiesser Date: Thu, 28 Oct 1993 11:58:32 EDT Subject: Korteweg-de Vries Software Available A complete Fortran code for the method of lines (MOL) integration of the Korteweg-de Vries PDE (KdVE) is available (on a DOS-formatted diskette). This code demonstrates the solitons of the KdVE, and gives a comparion of the MOL solution with the analytical solution for the one-soliton case. A two-soliton case is also included which demonstrates the merging and emerging of solitons. A paper pertaining to the KdVE analytical solution and the MOL approximation is included with the code. Requests should be sent to: W. E. Schiesser Iacocca Hall, D307 Lehigh University 111 Research Drive Bethlehem, PA 18015 USA (215) 758-4264 (office) (215) 758-5057 (fax) wes1@lehigh.edu (Internet) ------------------------------ From: Xuanmin Wang Date: Mon, 25 Oct 93 12:30 GMT Subject: Transformations of Linear Second Order ODEs. I am writing this message to ask for help. One of my research areas is about the 'direct' numerical methods for initial value problems of second order ordinary differential equations in which the first derivative is present. It is the first derivative that presents difficulties to the construction of such method. One of the problems for these 'direct' algorithms is if the coupled ODEs can be written into the form of uncoupled ones which have the same solution as the original problem. The IVPs of second order ODEs can be written as [M]x"+[C]x'+[K]x=f(t) (1) known: x(0) and x'(0) where [M], [C] and [K] are n by n symmetric matrices and x, x' and x" are vectors. The technique assuming that the damping matrix [C] is proportional to [M] and [K], i.e. [C]=a[M]+b[K], is commonly used in engineering applications. Thus, a orthogonal transformation can be used to uncouple the equations. The simplified form of (1) is: x"=-[C]x'-[K]x +f(t) (2) known: x(0) and x'(0) My question is: assuming that the [C] in (2) is an arbitrary symmetric matrix, if we can find out the equivalent uncoupled equations with the following procedure: (a) To write the second order ODEs into the form of first order ones (x") (-C -K) (x') (f) ( )= ( ) ( )+( ) (3) (x') ( I 0) (x ) (0) or y'=[B]y+F (4) (b) The eigenvalues of the matrix [B] can be obtained with a similarity transformation " [S]^(-1)[B][S] ", where " [S]^(-1) " denotes the inverse matrix of [S]. Equation (4) is transformed to z'=[S]^(-1)[B][S]z+[S]^(-1)F (5) The initial values of z(0) and z'(0) can be obtained by z(0)=[S]^(-1)y(0) z'(0)=[S]^(-1)y'(0) The eigenvalues of the matrix [B] are complex in general. The imaginary part of a pair of conjugate complex eigenvalues is the frequency with damping while the real part of the eigenvalues is the damping term. Obviously, problem (5) and (2) have the same solution. (c) The questions are: (i): IF the problem (5) can be rewritten to the form of uncoupled second order ODEs (6) by using these eigenvalues. w"+[D]w'+[Q]w=g(t) (6) known: w(0), w'(0) where both [D] and [Q] are diagonal matrices? If (2) can not be rewritten to (6), what conditions are required? (ii): Provided that the original problem (2) can be rewritten as (6), if solving the original problem (2) with a numerical method is equivalent to solving the uncoupled problem (6)? Thank you very much for your time in advance. I sincerely hope I can obtain reply from those who had seen this idea. MEG1839@V2.QUB.AC.UK Xuanmin Wang ------------------------------ From: Jean-Baptiste Hiriart-Urruty Date: Mon, 25 Oct 1993 14:14:35 +0100 (MET) Subject: New Book on Convex Analysis and Minimization Algorithms New book: Authors: J-B.HIRIART-URRUTY,Universite Paul Sabatier Toulouse and C.LEMARECHAL, I.N.R.I.A. Rocquencourt, France. 2 volumes: Vol.1 FUNDAMENTALS, 440p. Vol.2 ADVANCED THEORY AND BUNDLE METHODS, 346p. Editors: Springer-Verlag,Publication : October 1993. Title : CONVEX ANALYSIS AND MINIMIZATION ALGORITHMS Convex analysis can be considered as a refinement of standard calculus, with equalities and approximations replaced by inequalities.As such, it can easily be integrated into a graduate study curriculum.Minimization algorithms, more specifically those adapted to non-differentiable functions, provide an immediate application of convex analysis to various fields related to optimization and operation research.These two topics, making up the title of the book, reflect the two origins of authors, who belong respectively to the academic world and that of applications. The approach of their book is very comprehensive without being encyclopaedic : the emphasis is on introducing readers in a gradual and digestible manner to the concepts of convex analysis, their interlinking and their implications, with algorithms ideas worked in. Theory is interspersed with applications and vice versa; illustrative numerical results are given, and over 170 pictures illustrate and support geometric intuition . Throughout the book, ample comments help the reader further to master the concepts and methods, and to understand the motivations, the difficulties, and the relative significance of results. ------------------------------ From: Jack Dongarra Date: Mon, 25 Oct 93 14:06:07 -0400 Subject: Templates for the Solution of Linear Systems We have just completed a book on iterative methods. The book is primarily aimed at computational scientists who are not specialists in computational linear algebra and would like to incorporate state-of-the-art computational methods for solving large sparse non-symmetric systems of linear equations. The title of the book is ``Templates for the Solution of Linear Systems: Building Blocks for Iterative Methods'', is authored by Richard Barrett, Mike Berry, Tony Chan, Jim Demmel, June Donato, Jack Dongarra, Victor Eijkhout, Roldan Pozo, Chuck Romine and Henk van der Vorst, is being published by SIAM, and will be available in bound form in mid-November. SIAM has set the price for the Templates book at List Price $18.00 / SIAM Member Price $14.40. We are putting the royalties from the book into a SIAM fund to help support students attend SIAM meetings. The book contains: o) Mathematical descriptions of the flow of the iterations. o) Algorithms described in Fortran-77 and MATLAB. o) Discussion of convergence and stopping criteria. o) Suggestions for extending each method to more specific matrix types (for example, banded systems). o) Suggestions for tuning (for example, which preconditioners are applicable and which are not). o) Performance: when to use a method and why. SIAM is trying an experiment with this book and has allowed the postscript file containing the book to be distributed over the internet. It is available from netlib. To retrieve the postscript file you can use one of the following methods: 1) anonymous ftp to netlib2.cs.utk.edu cd linalg get templates.ps quit 2) from any machine on the Internet type: rcp anon@netlib2.cs.utk.edu:linalg/templates.ps templates.ps 3) send email to netlib@ornl.gov and in the message type: send templates.ps from linalg 4) use Xnetlib and click "library", click "linalg", click "linalg/templates.ps", click "download", click "Get Files Now". (Xnetlib is an X-window interface to the netlib software based on a client-server model. The software can be found in netlib, ``send index from xnetlib''). The algorithm descriptions in Fortran and MATLAB can be found in netlib under the directory linalg. Jack Dongarra University of Tennessee at Knoxville ------------------------------ From: F. Cellier Date: Thu, 21 Oct 1993 15:37:28 -0700 (MST) Subject: Multiconference on Computer Simulation ANNOUNCEMENT AND CALL FOR PAPERS 1994 INTERNATIONAL CONFERENCE ON QUALITATIVE INFORMATION, FUZZY TECHNIQUES, AND NEURAL NETWORKS IN SIMULATION June 1-3 1994, Barcelona, Spain Part of the 1994 SCS European Multiconference on Computer Simulation The 1994 International Conference on Qualitative Information, Fuzzy Techniques, and Neural Networks in Simulation brings together research paper presentations, panel sessions, tutorials, workshops, seminars, industrial applications, and software demonstrations that make use of qualitative information of some sort or other in models of dynamic systems for the purpose of simulation. Research papers are welcome in the following categories of presentation sessions. . Tutorials . Time-dependent Expert Systems . Panel Discussions . Qualitative Data Bases . Software and Tools for Simulation . Theory . Associative Memory . Common Sense Reasoning for Simulation about Dynamical Processes . Fuzzy Information Models . Inductive Reasoning . Fuzzification and Defuzzification about Dynamical Processes . Treatment of Uncertainty . Knowledge-based Reasoning in Dynamical Systems about Dynamical Processes . Treatment of Incomplete Knowledge . Naive Physics about Dynamical Systems . Neural Networks . Assumptions and Belief Systems for Dynamical Processes . Models of Human Reasoning Processes . Fault Monitoring and Diagnosis In recent years, more and more papers were published that combine several of the known qualitative knowledge representation techniques in a combined algorithm. For example, a number of papers were recently published on fuzzy neural networks. We therefore believe that it makes sense to bring the experts on and advocates of the various techniques together in one conference. DEADLINES: . November 30, 1993 Extended Abstracts or full paper drafts due. . February 14, 1994 Notification of acceptance/rejection to authors. . March 14, 1994 Camera Ready Copies due. Please, send four copies of extended abstracts (from four to six pages in typing excluding figures and tables) or drafts of full papers (a maximum of twelve pages in typing) to: Prof. Dr. Antoni Guasch General Program Chairperson of ESM'94 Dept. ESAII, ETSEIB Universitat Politecnica de Catalunya Diagonal 647, 2 planta 08028 BARCELONA Spain Phone: +34(3)401-6544 FAX: +34(3)401-6600 EMail: Guasch@ESAII.UPC.ES Please, add a cover letter stating your name, affiliation, mailing address, telephone number, FAX number, and EMail address. Indicate clearly that your paper is being submitted to ICQFN'94. Each manuscript will be reviewed by at least two members of the International Program Committee of ICQFN'94. ------------------------------ From: John R. Gilbert Date: Mon, 25 Oct 1993 10:18:40 PDT Subject: SIAM Conference on Applied Linear Algebra FIFTH SIAM CONFERENCE ON APPLIED LINEAR ALGEBRA Sponsored by the SIAM Activity Group on Linear Algebra June 15-18, 1994 Snowbird Ski and Summer Resort Snowbird, Utah DATES TO REMEMBER December 1, 1993: Deadline for submission of minisymposium proposal December 13, 1993: Deadline for submission of reply card March 7, 1994: Deadline for camera-ready papers for conference proceedings March 21, 1994: Deadline for advance registration for contributed participants June 15-18, 1994: SIAM Conference on Applied Linear Algebra CALL FOR PAPERS To get a complete copy of the call for papers for this conference, either use anonymous ftp to machine ae.siam.org (IP number 192.108.225.1) and retrieve file "pub/la-net/call94.text", or send e-mail with the body "send call94.text from la-net" to netlib@research.att.com. Hard copy of the call is being mailed to SIAM members, as usual. This meeting will experiment with a new format for contributed papers, in response to concerns about conflicts between parallel sessions. The new format is described in the complete call for papers. PLENARY SPEAKERS AND TOPICS * Eigenvalue Computation James Demmel, University of California, Berkeley * Geometry and Eigenvalues Persi Diaconis, Harvard University * Matrix Theory Israel Gohberg, Tel Aviv University, Israel * Iterative Methods for Large Sparse Systems Anne Greenbaum, Courant Institute, New York University * Nonnegative Matrices: Can the Next Century Top This One? Charles R. Johnson, College of William and Mary * Parallel Matrix Computations Robert S. Schreiber, RIACS-NASA Ames Research Center * Linear Algebraic Duality for Discrete Optimization Leslie E. Trotter, Cornell University INVITED MINISYMPOSIA * Numerical Methods for Structured Matrices Angelika Bunse-Gerstner, University of Bremen, Germany * Linear Algebra in Optimization Thomas F. Coleman, Cornell University * Direct Methods for Large Sparse Systems Iain Duff, Rutherford Appleton Laboratories, U.K., and CERFACS, France * Iterative Methods for Large Sparse Systems Roland Freund, AT&T Bell Laboratories * The Algebraic Riccati Equation and Applications Peter Lancaster, University of Calgary, Canada * Graph Theory and Linear Algebra Alex Pothen, University of Waterloo, Canada * Teaching of Linear Algebra Gilbert Strang, Massachusetts Institute of Technology CONTRIBUTED MINISYMPOSIA Six minisymposia will be selected from contributed proposals to complete the set of conference themes. Minisymposia will be two-hour sessions, intended to provide a high-level survey of current research in an important area of applied linear algebra. This conference will have significantly fewer minisymposia than previous Applied Linear Algebra meetings; most of the topics that would otherwise be minisymposia will instead be discussed in the common-interest sessions (see below). The complete call for papers contains instructions for proposing a minisymposium. CONTRIBUTED PAPERS As an experiment, this meeting has been organized so that the presentation of contributed papers will be a dialogue rather than a monologue. Each paper may be presented in three forms: in a proceedings volume, as a poster display, and as part of a 2-hour "common interest" discussion session. We expect most of the contributed papers to be presented in all three forms, though this is not required. The complete call for papers contains details. REGISTRATION The conference program and registration information will be available in early March 1994. To ensure receiving your copy, complete the reply card attached to the complete call for papers and return it to SIAM by either email or hard mail. **Prospective participants must complete and return this card by December 13, 1993.** Hard copy of the call for papers and reply card is (as usual) being mailed to SIAM members. ORGANIZING COMMITTEE Beresford N. Parlett (Chair), University of California, Berkeley Harm Bart, Erasmus University, Rotterdam Richard A. Brualdi, University of Wisconsin John R. Gilbert, Xerox Palo Alto Research Center Sven Hammarling, Numerical Algorithms Group John G. Lewis, Boeing Computer Services Paul Van Dooren, University of Illinois ------------------------------ From: Robert W. Leland Date: Fri, 22 Oct 93 14:58:19 MDT Subject: Research Fellowship at Sandia Applied Mathematical Sciences Research Fellowship Sandia National Laboratories, Albuquerque, New Mexico The Computational Sciences, Computer Sciences and Mathematics Center at Sandia National Laboratories invites outstanding candidates to apply for the 1994 Applied Mathematical Sciences (AMS) Research Fellowship. The Fellowship is supported by the Officer of Scientific Computing of the U.S. Department of Energy. AMS Fellowships at Sandia provide an exceptional opportunity for innovative research in scientific computing on advanced architectures. They are intended to promote the transfer of technology from the laboratory research environment to industry and academia through the advanced training of new computational scientists. Candidates must be U.S. citizens, have recently earned a Ph.D. degree or the equivalent, and have a strong interest in advanced computing research. The Center maintains strong programs in a variety of areas, including analytical and computational mathematics, discrete mathematics and algorithms, computational physics and engineering, advanced computational approaches for parallel computers, graphics, and architectures and languages. Preference will be given to candidates applying in the fields of numerical analysis, computational science and parallel algorithm development. Candidates with knowledge of an application area (e.g., semiconductor device modeling, CFD, climate modeling) are especially encouraged to apply. Sandia provides a unique parallel computing environment, including a 1,872-processor Intel Paragon, a 1024-processor nCUBE 2, a 64-processor Intel IPSC, and two Cray supercomputers. The fellowship appointment is for a period of one year and may be renewed 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: Robert H. Banks, Division 7531-121, Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185. The closing date for applications is January 31, 1994, although applications will be considered until the fellowship is awarded. The position will commence during 1994. For further information contact Richard C. Allen, Jr., at (505) 845-7825 or by e-mail, rcallen@cs.sandia.gov. Equal Opportunity Employer M/F/V/H U.S. Citizenship is Required ------------------------------ From: Brent Lindquist Date: Mon, 25 Oct 93 14:04:59 EDT Subject: Position at SUNY Stony Brook STATE UNIVERSITY of NEW YORK at STONY BROOK Department of Applied Mathematics and Statistics The department invites applications for one or more possible positions at the assistant or associate professor level. The department is seeking candidates with interests in the areas of computational applied mathematics, industrial statistics, or industrial engineering/operations research. Requirements include an earned doctorate in a relevant field, and demonstrated potential for research excellence and leadership. Research interests that overlap those of existing departmental areas will be preferred. The department also expects to have postdoctoral positions in computational applied mathematics available for the 1994-95 academic year. Qualified candidates should have computational experience in one or more areas of: fluid dynamics, parallel computing, hyperbolic conservation laws, flows in elastic and plastic media, and flows in porous media. Applicants should send vita, descriptions of research interests, and three recommendation letters to: James Glimm, Chair, Department of Applied Mathematics and Statistics, SUNY at Stony Brook, Stony Brook, NY 11794-3600. SUNY at Stony Brook is an equal opportunity/affirmative action employer and educator. ------------------------------ From: Jack Dongarra Date: Sun, 31 Oct 93 10:57:19 -0500 Oubject: Scalable High Performance Computing Conference THE 1994 SCALABLE HIGH PERFORMANCE COMPUTING CONFERENCE SHPCC94 DEADLINE FOR EXTENDED ABSTRACTS OF PAPERS: November 5, 1993 KNOXVILLE, TENNESSEE, U.S.A., MAY 23 - 25, 1994 SPONSORED BY: IEEE Computer Society The 1994 Scalable High Performance Computing Conference (SHPCC94) is a continuation of the highly successful Hypercube Concurrent Computers and Applications (HCCA), and Distributed Memory Concurrent Computing (DMCC) conference series. SHPCC takes place biennially, alternating with the SIAM Conference on Parallel Processing for Scientific Computing. INVITED SPEAKERS: Guy Blelloch, CMU Phil Colella, UC Berkeley David Culler, UC Berkeley Monica Lam, Stanford Univ Marc Snir, IBM SHPCC94 will provide a forum in which researchers in the field of high performance computing from government, academia, and industry can presents results and exchange ideas and information. SHPCC94 will cover a broad range of topics relevant to the field of high performance computing. These topics will include, but are not limited to, the following; Architectures Fault Tolerance Neural Networks Artificial Intelligence Image Processing Non-numerical Algorithms C++ Large-scale Applications Operating Systems Compilers Load Balancing Programming Environments Concurrent Languages Linear Algebra Scalable Libraries THE SHPCC94 program will include invited talks, contributed talks, posters, and tutorials. SHPCC94 will take place at the Holiday Inn Convention Center in Knoxville, Tennessee. Instructions for Submitting Papers ---------------------------------- Papers presented at the conference will be published in the Proceedings. 1. Submit 3 copies of an extended abstract of approximately 4 pages. Abstracts should include a succinct statement of the problems that are considered in the paper, the main results achieved, an explanation of the significance of the work, and a comparison with past research. To ensure a high academic standard, the abstracts of all contributed papers will be refereed. DEADLINE FOR EXTENDED ABSTRACTS OF PAPERS: November 5, 1993 Authors will be notified of acceptance by January 14, 1994 DEADLINE FOR FINAL CAMERA-READY COPY OF COMPLETE PAPER: February 14, 1994 The final complete paper should not exceed 10 pages. 2. Each copy of the extended abstract should have a separate title page indicating that the paper is being submitted to SHPCC94. The title page should also give the title of the paper and the names and addresses of the authors. The presenting author, and the author to whom notification of acceptance should both be sent, should be clearly indicated on the title page, together with their phone, fax, and email. 3. Extended abstracts should be sent to the Program Chair, David Walker. For further information contact David Walker at walker@msr.epm.ornl.gov ------------------------------ From: Richard Sincovec Date: Thu, 28 Oct 93 08:54:29 -0400 Subject: Householder Fellowship at Oak Ridge HOUSEHOLDER FELLOWSHIP IN SCIENTIFIC COMPUTING OAK RIDGE NATIONAL LABORATORY The Mathematical Sciences Section of Oak Ridge National Laboratory invites outstanding candidates to apply for the 1994 Alston S. Householder Fellowship in Scientific Computing. Alston S. Householder was the organizer and founding Director of the Mathematics Division (precursor of the current Mathematical Sciences Section) at Oak Ridge National Laboratory (ORNL). In recognition of the seminal research contributions of Dr. Householder to the fields of numerical analysis and scientific computing, a distinguished postdoctoral fellowship program has been established at ORNL and named in his honor. The Householder Fellowship is supported by the Office of Scientific Computing of the U.S. Department of Energy. The purposes of the Householder Fellowship are to promote innovative research in scientific computing on advanced computer architectures and to facilitate technology transfer from the laboratory research environment to industry and academia through advanced training of new computational scientists. The Householder Fellowship is a one year appointment that is renewable for a second year. Benefits of the Fellowship include a competitive salary, fringe benefits, travel opportunities, access to state-of-the-art computational facilities (including both parallel architectures and high-performance personal workstations), and collaborative research opportunities in a very active research program in advanced scientific computing. Competition for the appointment is open to U.S. citizens and permanent residents. Applicants should have completed a doctoral degree in computer science, mathematics, or statistics within three years prior to the appointment and have a strong background and research interest in large-scale scientific computing. ORNL's Mathematical Sciences Section has research programs in computational techniques and tools for solving grand challenge problems, heterogeneous distributed computing, algorithms and software for advanced computer architectures, performance evaluation of parallel computers and programs, mathematical modeling of environmental problems and their solution on parallel computers and computational statistics and biostatistics. The Householder Fellow is expected to participate in existing projects consistent with the research interests of the selected Fellow. Applicants should send a resume, statement of research goals, and three letters of recommendation to Kyle Johnson, PhD Employment, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6216, marked ATTN: Householder Fellowship. The deadline for applying is January 14, 1994. Finalists will be invited to visit ORNL in February 1994, and the selection committee's decision on the winning candidate will be announced in March 1994. The fellowship will commence in 1994. For further information, contact Richard F. Sincovec by phone at 615-574-3125 or by electronic mail at sincovecrf@ornl.gov. ------------------------------ From: Kazufumi Ito Date: Fri, 29 Oct 1993 13:19:15 -0400 Subject: Postdoctoral Position at North Carolina State The Department of Mathematics and the Center for Research in Scientific Computation at North Carolina State University expect to make several post-doctoral appointments for the following positions (the availability of positions is contingent upon fundings), starting July 1, 1994. 1. Two year Visiting Assistant Professorships in the department. The department is interested in applicants who work in research areas of ordinary differential equation, algebra, symbolic computation and analysis. 2. The appointments in the Center will be in the area of applied mathematics and scientific computation. The research interests of the Center include mathematical modeling, analysis and control of partial differential equations, numerical optimization, computational fluids and flow control and high-performance computation and biomathematics. The successful applicants will be involved in research programs between the Center and other research groups at NCSU which offer a unique opportunity for post-doctoral research on mathematical projects arising in industrial/governmental laboratories. Applicants should send a vita and brief description of research interests and have three letters of recommendation sent to Professor K. Ito, Department of Mathematics, Box 8205, North Carolina State University, Raleigh, NC 27695-8205. Applications will be considered at any time after January 15, 1994, as funding becomes available. North Carolina State University is an equal opportunity and affirmative action employer. In its commitment to diversity and equity, North Carolina State University seeks applications from women, minorities, and the disabled. ------------------------------ From: SIAM Date: Mon, 25 Oct 93 11:43:29 EST Subject: Contents: SIAM Numerical Analysis Table of Contents SIAM J. Numer. Anal. Vol. 31, No. 1, February 1994 The Convergence Rate of Godunov Type Schemes Haim Nessyahu, Eitan Tadmor, and Tamir Tassa On Godunov-Type Schemes for Lagrangian Gas Dynamics C.D. Munz On the Accuracy of Fractional Step Methods for Conservation Laws in Two Dimensions Zhen-Huan Teng Radiation Boundary Conditions for Dispersive Waves Robert L. Higdon On Certain Hybrid Iterative Methods for Solving Boundary Value Problems Vladimir Kozlov, Vladimir Maz'ya, Leonid Rozin Numerical Analysis of a Nonconvex Variational Problem Related to Solid-Solid Phase Transitions Pierre-Alain Gremaud Approximated Convex Envelope of a Function Bernard Brighi and Michel Chipot A Posteriori Error Estimation with Finite Element Semi- and Fully Discrete Methods for Nonlinear Parabolic Equations in One Space Dimension Peter K. Moore Semidiscretization in Time of Nonlinear Parabolic Equations with Blowup of the Solution Marie-Noelle Le Roux A Tetrahedral Mixed Finite Element Method for the Stationary Semiconductor Continuity Equations J.J.H. Miller and S. Wang SOR-Secant Methods Jose Mario Martinez Krylov Subspace Methods for Solving Large Lyapunov Equations Imad M. Jaimoukha and Ebrahim M. Kasenally Efficient Numerical Validation of Solutions of Nonlinear Systems G. Alefeld, A. Gienger, and F. Potra Unitary Integrators and Applications to Continuous Orthonormalization Techniques Luca Dieci, Robert D. Russell, and Erik S. Van Vleck A Multiscale Algorithm for Image Segmentation by Variational Method G. Koepfler, C. Lopez, and J.M. Morel ------------------------------ End of NA Digest ************************** -------