From surfer.EPM.ORNL.GOV!nacomb Sun Feb 3 00:47:18 0500 1991 Received: by pyxis; Sun Feb 3 04:19 EST 1991 Received: by inet.att.com; Sun Feb 3 04:17 EST 1991 Received: by surfer.EPM.ORNL.GOV (5.61/1.34) id AA27058; Sun, 3 Feb 91 00:47:18 -0500 Date: Sun, 3 Feb 91 00:47:18 -0500 From: nacomb@surfer.EPM.ORNL.GOV (NA-NET) Message-Id: <9102030547.AA27058@surfer.EPM.ORNL.GOV> To: na-comb@surfer.EPM.ORNL.GOV Subject: NA Digest, Vol. 91, No. 5 Comment: Submissions for NA News Digest, mail to na.digest@na-net.ornl.gov. Comment: Information about NA-NET, mail to na.help@na-net.ornl.gov. Comment: Comments about the NA-NET, mail to nanet@na-net.ornl.gov. NA Digest Sunday, February 3, 1991 Volume 91 : Issue 5 Today's Editor: Cleve Moler Today's Topics: New Book on Solving Linear Systems Cyclic Reduction Software Node Renumbering Schemes Financial Calculations SIAM Student Paper Competition Ninth Parallel Circus Multigrid Conference at George Washington University Second Annual Midwest NA Day Conference in Italy on Parallel Methods for ODEs SIAM Journal on Mathematical Analysis Position at University of Tulsa Position at Northern Illinois University Visiting Research Positions at RIACS ------------------------------------------------------- From: Jack Dongarra Date: Mon, 28 Jan 91 11:19:56 -0500 Subject: New Book on Solving Linear Systems We would like to announce the publication of ``Solving Linear Systems on Vector and Shared Memory Computers'', written by Jack Dongarra, Iain Duff, Danny Sorensen, and Henk van der Vorst. It has 256 pages and is intended to provide a rapid introduction to the world of vector and parallel processing for solving systems of linear equations. The book is under $20 for SIAM members and the royalties go into a fund to support student attendance to SIAM meetings. Please contact SIAM, 3600 University City Science Center, Philadelphia, PA 19104-2688, 215-382-9800, FAX 215-386-7999. Thanks, Jack, Iain, Danny, and Henk ------------------------------ From: Steven Ashby Date: Mon, 28 Jan 91 21:12:22 PST Subject: Cyclic Reduction Software Wanted: Cyclic Reduction Software A colleague of mine wishes to obtain a FORTRAN implementation of cyclic reduction for a complex tridiagonal matrix. Ideally, the code should vectorize. Please send your suggestions to ashby@lll-crg.llnl.gov. Thanks in advance! -Steve Ashby ------------------------------ From: Chris Johnson Date: Wed, 30 Jan 1991 15:12 MST Subject: Node Renumbering Schemes I am in the process of hunting down node renumbering algorithms for use with a three dimensional finite element program. The matrix I must solve is banded and symmetric and ranges in size from n = 25,000 to n = 100,000. Due to the computational time and cost I would like to reduce the bandwith to its optimal size. Does anyone know of any better algorithms (or faster) than the 1969 Cuthill and McKee paper? Thanks, Chris Johnson crayjohn@cc.utah.edu P.S. Optimized FORTRAN or C code would certainly be an added bonus! ------------------------------ From: Steve Sommars Date: Fri, 1 Feb 91 12:00:22 EST Subject: Financial Calculations Financial calculations can give results which vary between implementations (e.g., internal computations in decimal versus floating point, rounding versus truncating). This can lead the situation where the corporate mainframe's results differs by a few pennies from the PC's spreadsheet. Some institutions may be sensitive to this. How do people in ``the real world'' handle this? I asked David Hough about the topic & he responded: >For instance, in mortgage and bond calculations, each financial >institution adopts its own rules about rounding, so they're not >consistent. Beyond that I don't know much. An inquiry >to numeric-interest [and to NA Net] might net you more info. Here are some specific questions for numeric-interest folks: 1) Are there standards for financial calculations which are as explicit about computations as IEEE-754 is for floating point? 2) What are the elementary operations in financial calculations? Add, Subtract, Multiply to be sure. Divide? Net Present Value? others? 3) Is David right? Does this mean 9.75interest on a loan may be computed differently by two banks (all other details being equal)? 4) Do users expect ``off by a few cents'' differences? When is a ``few cents'' too large? 5) Do any PC-based applications implement decimal arithmetic for financial computations? Steve Sommars sesv@research.att.com ------------------------------ From: SIAM Date: Thu, 31 Jan 91 09:11 EDT Subject: SIAM Student Paper Competition SIAM Student Paper Competition We are pleased to announce that the annual SIAM Student Paper Competition will be held during the second International Conference on Industrial and Applied Mathematics (ICIAM 91). ICIAM 91 is jointly sponsored by five international societies of applied and computational mathematicians -- GAMM of the German-speaking countries, IMA of the United Kingdom, SIMAI of Italy, SMAI of France, and SIAM. SIAM is the conference host. Over 2,000 attendees are expected for this significant international event. The ICIAM Standing Committee is enthusiastic about having the SIAM Student Paper Competition as part of ICIAM 91. If you have a student or know of a student who should be included in the competition, here are the details: The student authors of the three best papers in applied and computational mathematics submitted to SIAM will be invited to attend ICIAM 91 in Washington, DC, July 8-12. Each winner must present his/her paper at the conference and will receive up to $750 to offset expenses. The winners will be awarded a calligraphed certificate at a special prize ceremony at the conference. Papers must be singly authored to be eligible for consideration. To qualify, authors must be students in good standing who have not received their PhDs at the time of submission. In submitting their work for publication, authors are asked to consider the SIAM journals. Submissions must be postmarked by no later than March 15, 1991. Submissions can be sent by regular mail or fax. Each submission must include (1) an extended abstract (3-4 pages), double-spaced, in English; (2) the signature of the author on the submission; (3) a statement by the student's faculty advisor that the paper has been prepared by the author indicated and that the author is a student in good standing; and (4) a short biography of the student. Each submission must also include a letter of recommendation from the student's advisor or department chair. Submissions will be judged on the basis of originality, applicability, and clarity of exposition. The winners will be notified by May 24, 1991. If you have any questions, please contact: Allison Bogardo SIAM 3600 University City Science Center Philadelphia, PA 19104-2688 Telephone: (215) 382-9800 E-mail to siam@wharton.upenn.edu Fax to (215) 386-7999 ------------------------------ From: Omer Egecioglu Date: Wed, 30 Jan 91 12:12:16 PST Subject: Ninth Parallel Circus SECOND ANNOUNCEMENT of the Ninth Parallel Circus Location: Santa Barbara, California Dates: March 22-23, 1991 Continuing the tradition that began at Yale in 1986, the Department of Computer Science and the College of Engineering at the University of California, Santa Barbara will be hosting the Ninth Parallel Circus in Santa Barbara on Friday and Saturday, March 22-23, 1991. The Parallel Circus is an informal meeting of the numerical analysis community with particular emphasis on parallel algorithms for scientific computing. This is the second time that the Circus will be held on the West coast. As with the previous Circuses, we hope to have many atten- dees from the USA, Canada, and other countries. The circus is unique in that it is VERY informal, and thus allows us to talk about the very latest results as well as interesting work in progress. In our previous meetings there has been lots of informal discussion and a very healthy mix of industrial and academic par- ticipants. GRADUATE STUDENTS ARE ESPECIALLY WELCOME. Organizers: Gene Golub, Omer Egecioglu, Mary Olson. For further information please contact: Omer Egecioglu e-mail: omer@cs.ucsb.edu ------------------------------ From: Murli Gupta Date: Wed, 30 Jan 91 09:36:57 EDT Subject: Multigrid Conference at George Washington University Multigrid Conference at George Washington University Revised Announcement Deadline Extended to March 15 The Conference The George Washington University (Washington, DC) will host an NSF/CBMS Regional Research Conference on Multigrid and Multilevel Adaptive Methods for Partial Differential Equations from June 24 to June 28, 1991. The principal lecturer will be Stephen F. McCormick of the University of Colorado at Denver who will deliver a sequence 10 one-hour lectures. Demonstrations and workshop sessions will also be organized. Additional lectures may be given by the invited participants. Participation is open to research scientists and graduate students involved in activities that would profit from the lectures and the interaction this conference would provide. PARTICIPATION OF GRADUATE STUDENTS AND MINORITIES IS STRONGLY ENCOURAGED. Accommodation A limited amount of single room accommodations has been reserved in Adams Hall, which is on the University campus and is close to all campus buildings. Support A limited amount of support for travel and subsistence is available. Applications for participation and possible support should be made by March 15, 1991. To participate, with or without support, please send a short vita and a list of recent publications. For further information, including an electronic conference application form, contact the Conference Director: Professor Murli M. Gupta Department of Mathematics The George Washington University Washington, D.C. 20052 Phone: 202-994-4857 FAX: 202-994-0458 Bitnet address: MMG@GWUVM Internet address: MMG@GWUVM.GWU.EDU or na.mgupta@na-net.ornl.gov ------------------------------ From: Paul Saylor Date: Thu, 31 Jan 91 14:05:16 -0600 Subject: Second Annual Midwest NA Day FIRST ANNOUNCEMENT for the 2nd Annual Midwest NA Day Location: Urbana, IL Date: Saturday, May 11 1991 The 2nd Annual Midwest NA Day is scheduled for Saturday, May 11 1991 on the University of Illinois, Urbana-Champaign campus. The first NA Day was held in April of last year to take special note of the retirement of Bill Gear from the University of Illinois. This year, the conference coincides with the May graduation ceremonies in which Gene Golub is to receive an Honorary Doctorate from the University. The first conference was well-attended (60-80 people) and invited speakers included Gene Golub, Germund Dahlquist and Linda Petzold. The informal atmosphere of the conference and the interesting variety of talks made it a memorable event. We seek to continue this tradition and, as before, participation from graduate students is especially encouraged. More detailed conference information (call for speakers, schedule of presentations, accommodations) will appear in a future NA News Digest. Organizers: Michael Holst, Steven Lee, Faisal Saied, Paul Saylor, Ahmed Sameh and Bob Skeel. For inquiries, send e-mail to: naday@martini.cs.uiuc.edu or call the organizers at (217) 333-6172. ------------------------------ From: A.Bellen Date: Thu, 31 JAN 91 19:22 N Subject: Conference in Italy on Parallel Methods for ODEs UNIVERSITA' DEGLI STUDI DI TRIESTE Dipartimento di Scienze Matematiche INTERNATIONAL CONFERENCE ON PARALLEL METHODS FOR ORDINARY DIFFERENTIAL EQUATIONS THE STATE OF THE ART. (Grado) Italy September 10-13, 1991 Organized by: ALFREDO BELLEN Department of Mathematical Sciences University of Trieste MARINO ZENNARO Department of Pure and Applied Mathematics University of L'Aquila Invited Speakers: K.BURRAGE (Auckland NZ) I.GALLIGANI (Univ.Bologna I) C.W.GEAR (NEC Princeton NJ, USA) Z.JACKIEWICZ (Arizona State University USA) P.J.van der HOUWEN (CWI Amsterdam NL) O.NEVANLINNA (Univ.Helsinki SF) S.P.NORSETT (NTH Trondheim N) D.TRIGIANTE (Univ. Bari I) M.ZENNARO (Univ. L'Aquila I) The confernce is arranged as a Seminar-Workshop and will be devoted to provide an exhaustive and updated overview of parallel numerical methods for the solution of Ordinary Differential Equations. There will be both invited lecturers and contributed talks. According to the number of applications, the conference proceedings will appear in some high level book series including invited and contributed papers which will undergo the usual refereeing process. During the conference some social activities are planned such as excursions to the Grado Lagoon, visits to Roman ruins etc. The registratrion fee for the meeting is $ 90 to be paid on arrival. For further information contact: A.Bellen Dipartimento di Scienze Matematiche Universita' I-34100 TRIESTE, ITALY e-mail address na.bellen@na-net.ornl.gov or bellen@univ.trieste.it ------------------------------ From: SIAM Publications Department Date: Tue, 29 Jan 91 15:15 EDT Subject: SIAM Journal on Mathematical Analysis SIAM Journal on Mathematical Analysis May, 1991 Volume 22, Number 3 CONTENTS A Hyperbolic Theory for the Evolution of Plane Curves Morton E. Gurtin and Paolo Podio-Guidugli Blow-up Asymptotics for the Reactive-Euler Gas Model Alberto Bressan An Interior Discontinuity of a Nonlinear Elliptic-Hyperbolic System Senhuei E. Chen and R. Bruce Kellogg On the Obstacle Problem for Quasilinear Elliptic Equations of P Laplacian Type Hi Jun Choe and John L. Lewis Homogenization with Small Perforations of Increasingly Complicated Shapes Alain Damlamian and Patrizia Donato The Bifurcations of Countable Connections from a Twistred Heteroclinic Loop Bo Deng Layered Velocity Inversion: A Model Problem from Reflection Seismology William Symes Solutoion of the Inverse Scattewring Problem for the 3-D Schrodinger Equation Using a Fredholm Integral Equation Tuncay Aktosun and Cornelis van der Mee The Inverse Eigenvalue Problem with Finite Data David C. Barnes Half-Bound States and Levinson's Theorem for Discrete Systems D. B. Hinton, M. Klaus, and J. K. Shaw Conditions for Oscillation of Difference Equations with Applications to Equations with Piecewise Constant Arguments I. Gyori, G. Ladas, and L. Pakula Atkinson's Superlinear Oscillation Theorem for Matrix Difference Equations Allan C. Peterson and Jerry Ridenhour An Hm0 Interpolation Result S. Jensen An Extremal Problem Concerning a Markov-Type Inequality P. Dorfler Minimal Extrapolations of Filters Benjamin B. Wells Asymptotic Expansion of a Class of Fermoi-Dirac Integrals J. Boersma and M. L. Glasser Contiguity Relations of Aomoto-Gel'fand Hypergeometric Functions and Applications to Appell's System F3 and Goursat's System 3F2 Takeshi Sasaki Mean Convergence of Expansions in Freud-Type Orthogonal Polynomials H. N. Mhaskar and Y. Xu Reproducing Formulas and Double Orthogonality in Bargmann and Bergman Spaces Kristian Seip Errata: Sur une classe de fonctionelles non convexes et applications Rabah Tahraoui For additonal information regarding the SIAM Journal on Mathematical Analysis, please contact Vickie Kearn, Publisher, Society for Industrial and Applied Mathematics, 3600 University City Science Center, Philadelphia, PA 19104-2688; telephone: (215) 382-9800; fax: (215) 386-7999; e-mail: siampubs@wharton.upenn.edu. ------------------------------ From: J. C. Diaz Date: Wed, 30 Jan 91 09:59:34 CST Subject: Position at University of Tulsa THE UNIVERSITY OF TULSA DEAN College of Engineering and Applied Sciences The University of Tulsa is accepting applications and encouraging nominations for the position of Dean of the Col- lege of Engineering and Applied Sciences. The University is an independent comprehensive, doctoral-degree-granting research institution with approximately 3,200 undergraduate, and 1,400 graduate and professional students. The City of Tulsa, located in the rolling Osage Hills of northeastern Oklahoma's Green Country, is a pleasant urban center with two major art museums, professional resident opera, ballet, symphony and theater companies. It offers exceptional medi- cal, recreational, and business facilities, and serves a population of more than 500,000. The College of Engineering and Applied Sciences con- sists of eight departments: Chemical Engineering, Chemistry, Electrical Engineering, Geosciences, Mathematical and Com- puter Sciences, Mechanical Engineering, Petroleum Engineer- ing and Physics. Its faculty of 72 members instructs a diversified student body of 630. College computing facili- ties are linked to a campus-wide network that includes dor- mitories and libraries. The College has strong ties with regional and international industry, sharing common interests in energy, information, materials, manufacturing, the environment, and computing technology, and is well known for its industrial consortia. The Dean of the College of Engineering and Applied Sci- ences reports to the Provost of the University. He/she will assume a leadership role in the academic and research development of the college, should be a recognized scholar with an earned doctorate in engineering, the applied sci- ences, or physical sciences, and should be familiar with current research trends in these areas. The successful can- didate must have appropriate credentials to qualify at the rank of full professor with continuing appointment (tenure) in a department of the College. This individual must be able to represent the diverse constituencies of the College and to strengthen its academic and research programs. The candidate should possess leadership qualities that will foster constructive relationships with other colleges, the community, and industry. Academic and significant adminis- trative experience is required. Salary is competitive. Additional information on job responsibilities and qualifi- cations will be sent on request. The position will be available June 1, 1991. The Search Committee will give full consideration to applications received by March 15, 1991; however, applica- tions will be accepted until the position is filled. Appli- cations, nominations, and correspondence should be addressed to: Dale Teeters, Chair EAS Dean Search Committee Office of the Provost The University of Tulsa 600 South College Avenue Tulsa, Oklahoma 74104-3189 The University of Tulsa is a Equal Opportunity/Affirmative Action Institution. ------------------------------ From: Biswa Datta Date: Wed, 30 Jan 91 18:05:53 CST Subject: Position at Northern Illinois University Computational Mathematics Position Northern Illinois University Department of Mathematical Sciences Anticipated assistant professorship with a specialization in numerical partial differential equations or optimization theory. Ph.D. or equivalent and strong potential in research and teaching required. Application (vita) plus three letters of reference and a description of research program should be sent to: Computational Math Position c/o Professor William D. Blair Chair,Department of Mathematical Sciences Northern Illinois University DeKalb, IL 60115 by February 15, 1991. EO/AAE. ------------------------------ From: Rich Sincovec Date: Sat, 02 Feb 91 14:37:43 -0800 Subject: Visiting Research Positions at RIACS RESEARCH INSTITUTE FOR ADVANCED COMPUTER SCIENCE (RIACS) NASA Ames Research Center The Research Institute for Advanced Computer Science (RIACS) at the NASA Ames Research Center, Moffett Field, California, is inviting applications for visiting research appointments for the summer and for periods up to two years at all levels from postdoctoral research scientist to senior scientist. Faculty on sabbatical and graduate students seeking summer positions are also encouraged to apply. Areas of interest are algorithms and software for parallel scientific computation with applications to computational fluid dynamics, parallel algorithms for sparse matrix problems, adaptive and unstructured mesh methods for solving partial differential equations the design and implementation of compilers and tools for parallel computers, and pattern recognition and neural computing. The computing environment at the NASA Ames Research Center in which this research is conducted includes a 32,768 processor Connection Machine (CM-2), an Intel iPSC/860 with 128 processors, a Cray Y-MP with 8 processors and a Cray-2 with 4 processors. The computing environment also includes advanced graphics workstations. Visitors to RIACS will be expected to be receptive to collaboration with NASA scientists. Additional opportunities for collaboration abound, both within RIACS and at other institutions in the San Francisco Bay area. Applicants should send resumes and descriptions of proposed research to: Dr. Richard Sincovec, Director RIACS Mail Stop Ellis NASA Ames Research Center Moffett Field, CA 94035. Applications and inquiries may also be made via e-mail to sincovec@riacs.edu. RIACS is an Equal Opportunity Employer. ------------------------------ End of NA Digest ************************** -------