From nacomb@surfer.EPM.ORNL.GOV Sun Nov 24 16:09:53 1991 Return-Path: Received: from surfer.EPM.ORNL.GOV by CS.UTK.EDU with SMTP (5.61++/2.7s-UTK) id AA20180; Sun, 24 Nov 91 16:09:47 -0500 Received: by surfer.EPM.ORNL.GOV (5.61/1.34) id AA04969; Sun, 24 Nov 91 16:09:33 -0500 Date: Sun, 24 Nov 91 16:09:33 -0500 From: nacomb@surfer.EPM.ORNL.GOV (NA-NET) Message-Id: <9111242109.AA04969@surfer.EPM.ORNL.GOV> Subject: NA Digest, V. 91, # 47 Apparently-To: dongarra@cs.utk.edu Status: R NA Digest Sunday, November 24, 1991 Volume 91 : Issue 47 Today's Editor: Cleve Moler Today's Topics: Change of Address for Sam Eldersveld Helmholtz Solver Finding Saddlepoints Honorary Doctorate for Richard Varga SIAM Conference on Discrete Mathematics ICFD Conference Abstracts - last call Correction: Permian Basin Supercomputing Conference NO Mathematics Chair Position at Naval Postgraduate School Position at Northwestern University Position at Montana State Symposium on Orthogonal Polynomials Workshop on Matrix Methods in Statistics 1ST African Conference in Computer Science Contents, SIAM Scientific and Statistical Computing 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: Sam Eldersveld Date: Fri, 22 Nov 91 13:06:12 PST Subject: Change of Address for Sam Eldersveld I have taken a position with the Applied Mathematics and Statistics Group at Boeing Computer Services. Effective immediately my new address is: Sam Eldersveld Boeing Computer Services P.O. Box 24346, MS 7L-21 Seattle, Washington 98124-0346 Tel : (206) 865-2966 Email: SamE@Espresso.Boeing.com Thanks. -Sam ------------------------------ From: LANE@alcvax.pfc.mit.edu Date: Thu, 21 Nov 91 15:35 EST Subject: Helmholtz Solver I am trying to find out what codes are available or what is the best method for solving the Helmholtz equation in cylindrical geometry with complicated boundary conditions and source term. ------------------------------ From: Art Owen Date: Tue, 19 Nov 91 09:51:05 EST Subject: Finding Saddlepoints I posted a request on this to sci.math.num-analysis on the UNIX network and the replies were of the form: I have this problem too, I wish more attention were devoted to it (and mild variants). What are good numerical ways to find saddlepoints of functions? Has anybody got experience to report using Hestenes' planar CG method [Conjugate Direction Methods in Optimization, Springer-Verlag, 1980]. When doing line searches, how does one decide which of two points represents "more progress" towards finding the saddlepoint? The norm of the gradient can be badly conditioned. The problems I am trying are to maximize over p parameters the minimum over q parameters of a very smooth function. The inner minimization is convex. Sometimes the outer maximization is concave. The problem arises as a maximization in n variables with q constraints. [In one case p=3, q=4, n=151 and a substantial speedup occurs in formulating a 7 dimensional saddlepoint problem via Lagrange multipliers versus a 151 dimensional maximization with constraints. (actually n+p=154 dims with q=4 constraints)] What I am hoping to get are pointers to the literature on how to solve this problem. Code would also be of interest, but be sure to indicate whether I can freely give it away to other people. Art Owen ------------------------------ From: W. Niethammer Date: Sat, 23 Nov 91 09:25 Subject: Honorary Doctorate for Richard Varga Richard S. Varga, University Professor of Mathematics at Kent State University, Ohio, has received an honorary doctorate from University of Karlsruhe in Germany. Varga was cited for his extraordinary contributions in numerical analysis and constructive approximation theory. Varga received a PhD in mathematics from Harward University in 1954. >From 1954 to 1960, he worked at Westinghouse Electric Corporation, Bettis Atomic Laboratory (Pittsburgh). He was professor of mathematics at Case Institute of Technology from 1960 to 1969. Since 1980 he is scientific director of the Institute for Computational Mathematics at Kent State. Varga received a Guggenheim fellowship in 1963 and the von Humboldt Senior US Award in 1982. ------------------------------ From: SIAM Conferences Department Date: Mon, 18 Nov 91 15:34 EDT Subject: SIAM Conference on Discrete Mathematics Good news -- in case you have not yet submitted your 100-word contributed abstract for the SIAM Conference on Discrete Mathematics, June 8-11, 1992, Vancouver, Canada. The conference organizing committee has extended the deadline for submission to Thursday, November 21, 1991. Send yours now either by FAX: 215-386-7999 or e-mail: siamconfs@wharton.upenn.edu We look forward to receiving your contributed abstract. Thank you. SIAM Conference Department ------------------------------ From: Mike Baines Date: Sun, 24 Nov 91 15:11:28 GMT Subject: ICFD Conference Abstracts - last call Please fax last minute 2 page abstracts for oral or poster presentation at the ICFD Conference on Numerical Methods for Fluid Dynamics in Reading UK next April to +44 865 273839 Details from Bette Byrne on +44 865 273883. All accepted papers will be given in full session at the Conference and published in the Proceedings by Oxford Univerity Press. K W Morton M J Baines ------------------------------ From: Marcin Paprzycki <"PBACAD::M_PAPRZYCKI"@utpb.pb.utexas.edu> Date: Sat, 23 Nov 1991 11:40:21 GMT-0600 Subject: Correction: Permian Basin Supercomputing Conference Call for Papers PERMIAN BASIN SUPERCOMPUTING CONFERENCE 1992 March 13-15 The University of Texas of the Permian Basin Odessa, Texas Organized by: Marcin Paprzycki Advisors: Firooz Khosraviyani, Mogens Melander In cooperation with: SIAM Supercomputing Group The purpose of the conference is to bring together researchers in all fields of supercomputing, high performance computing and parallel computing for an effective exchange of ideas and discussion of recent developments and future directions of research. Tutorial: "Large-scale and Parallel Computations in System Control Theory" will be presented by Prof. Biswa Datta Sponsored by: Center for High Performance Computing, Austin Cray Research Inc. DECmpp 12000 Group Intel Corporation University of Texas of the Permian Basin Invited Speakers: Chris Bischof, Julio Diaz, Ian Gladwell, David Kincaid, Robert Plemmons, Danny Sorensen, Robert van de Geijn. Submit three copies of detailed abstract (not to exceed 1000 words) by December 20, 1991 to: Marcin Paprzycki, Conference Chairman Department of Mathematics and Computer Science University of Texas of the Permian Basin Odessa, TX 79762 Phone: (915) 367-2244 Fax: (915) 367-2115 E-mail: m_paprzycki@utpb.pb.utexas.edu m_paprzycki@utpb.bitnet ------------------------------ From: Richard Franke <0083P@NAVPGS.BITNET> Date: Mon, 18 Nov 91 16:25:33 PST Subject: NO Mathematics Chair Position at Naval Postgraduate School The Dean has decided that due to budgetary and personnel constraints, the Mathematics Department will not be allowed to hire a Chairperson from outside the school. Therefore I must inform you to disregard the announcement in NA Digest Vol. 91 # 44. My apologies for anyone that has been inconvenienced. ------------------------------ From: William L. Kath Date: Wed, 20 Nov 91 12:00:04 CST Subject: Position at Northwestern University TENURE-TRACK FACULTY POSITION IN APPLIED MATHEMATICS Northwestern University Department of Engineering Sciences and Applied Mathematics Applications are invited for a tenure-track Assisitant Professorship in Applied Mathematics. Requirements include a Ph.D. and demonstrated ability to do research in an area compatible with the interests of the Department. Duties involve teaching and research. The proposed starting date is September, 1992. To ensure full consideration, applicants should send a resume before February 1, 1992 to: Search Committee Department of Engineering Sciences and Applied Mathematics Northwestern University Evanston, IL 60208 Applications from women and minorites are especially welcomed. Northwestern University is an Affirmative Action Equal Opportunity Employer. Hiring is contingent upon elegibility to work in the United States. Inquiries about the position may be directed to the above address, or via electronic mail to: jpiehl@casbah.acns.nwu.edu ------------------------------ From: umsfhire@deimos.oscs.montana.edu Date: Thu, 21 Nov 91 15:55:43 MST Subject: Position at Montana State Position Advertisement: MONTANA STATE UNIVERSITY DEPARTMENT OF MATHEMATICAL SCIENCES The Department of Mathematical Sciences at Montana State University invites applications for a tenure-track position at the Assistant Professor level, to begin in August 1992. Requirements include a PhD in Mathematics or a related field and evidence of strong research potential and teaching skills. Applicants should complement the department's Ph.D. programs in dynamical systems and applied numerical analysis, with particular emphasis on applied mathematics, control theory, and geometric analysis. The department has a large graduate program, involving approximately 60 graduate students and a faculty of 28 PhD mathematicians and statisticians. The Center for Interfacial Microbial Process Engineering, an NSF-sponsored Engineering Research Center at Montana State University, offers excellent opportunities for interdisciplinary work. Bozeman is located in the Rocky Mountains 60 miles north of Yellowstone National Park. Fishing, hunting, skiing, backpacking, and other outdoor recreational activities are abundant. Applicants must send their resumes and the names of three references to: K. J. Tiahrt, Department of Mathematical Sciences, Montana State University, Bozeman, MT 59717-0240. Further information about this position can be obtained by writing to Dr. Tiahrt or by sending e-mail to: HIRING@DEIMOS.OSCS.MONTANA.EDU The deadline for applications is February 1, 1992 or until the position is filled. Montana State University is an affirmative action / equal opportunity employer. Veterans preference. ------------------------------ From: Claude Brezinski Date: Me, 20 Nov 91 15:39:28 +0100 Subject: Symposium on Orthogonal Polynomials 4th International Symposium on ORTHOGONAL POLYNOMIALS AND THEIR APPLICATIONS Evian - France October 19-23, 1992 organized by Association Francaise d'Approximation The aim of this congress is to gather mathematicians, scientists and engineers working on or using orthogonal polynomials. All the aspects of the subject are intended to be covered. Accomodation and conferences will take place at the Village-Vacances- Familles (VVF) of Evian, located on the bank of Lake Leman in the French Alps. Evian can be reached by train or plane (Geneva in Switzer- land. A swiss visa will by needed for some foreigners). Participants are invited to arrive on Sunday 18 October and to leave on Saturday 24. Accomodation is only by apartments with two bedrooms (each with a bathroom) and a common living room. The price for full board is 305 FF per day and per person. The registration fees (including the so- cial events and a copy of the proceedings) are 1100 FF (500 FF for accom- nying persons) and they must be sent (in French Francs and free of charges for us) together with an advance of 900 FF for accomodation to : account # 13606 / 00071 / 30708125000 / 410 beneficiary Assoc. d'Approx. - Mr Le Mehaute bank Credit Agricole 61 rue Nationale, 35135 - Chantepie, France Deadline for registration, sending the abstract (1 page) and a proof of payment is May 3, 1992 An additional fee of 100 FF will be charged for late registration. The proceedings will be published. The complete papers should be brought at the congress. If you intend to participate and give a talk, please contact as soon as possible : Claude BREZINSKI , ISOPA 4 Laboratoire d'Analyse Numerique et d'Optimisation UFR IEEA - M3 Universite des Sciences et Technologies de Lille 59655 - Villeneuve d'Ascq cedex FRANCE email : LABANO@FRCITL81.BITNET The organizing committee : S. Belmehdi, C. Brezinski, M. Prevost, H. Sadok, J. van Iseghem (Lille), A.P. Magnus (Louvain-La-Neuve), P. Maroni (Paris VI), M. Redivo Zaglia (Padova), A. Ronveaux (Namur) ------------------------------ From: George P. H. Styan Date: Wed, 20 Nov 91 17:05:37 EST Subject: Workshop on Matrix Methods in Statistics The Organizing Committee: Harold Henderson, Jeff Hunter, Bryan Manly, Simo Puntanen, Alastair Scott, and George Styan. We are pleased to invite you to attend an "International Workshop on Matrix Methods for Statistics" to be held on Friday-Saturday, 4-5 December 1992, at the University of Auckland, Auckland, New Zealand. Co-sponsored by the International Linear Algebra Society (ILAS), this Workshop is a satellite to, and almost immediately precedes, the International Biometric Conference-IBC92 (7-11 December 1992). We encourage you to attend our Workshop and then stay on for the IBC92 in Hamilton (90-minutes drive south of Auckland). There will be a Short Course on Dynamic Graphical Analysis given by R. Dennis Cook in Hamilton on Sunday, 6 December 1992. And after the IBC92 there will be Genstat and Correlated Data Workshops, 1both scheduled to start on Monday, 14 December 1992, respectively in Rotorua (or Hamilton) and Queenstown. Further details about the IBC92 are enclosed. The Mahalanobis Multivariate Statistics Meeting in Delhi (17- 22 December 1992) will be preceded by a satellite meeting in Delhi (organized by Sujit Kumar Mitra) on generalized inverse and its application (11-16 December 1992). There are good airline connections from Auckland to Delhi via Singapore. The purpose of our International Workshop on Matrix Methods for StatisticsS is to foster the interaction, in an informal setting, of researchers in the interface between matrix theory and statistics. We propose, therefore, that there be no parallel sessions, and that all, or almost all, the talks be of 20-minutes duration. That would make a total of (say) 20 talks, and so of 10 each day. We have invited Garry Tee (Auckland) to talk about the work of Alexander Craig Aitken (1895-1967), and his plans to publish Aitken's the weekend to hold an organizational meeting for a possible 3rd Pacific Statistical Congress to be held in 1995 in Celebration of the 100th birthday of A. C. Aitken (the two earlier PSC's were held in Auckland, 1985, and Sydney, 1990). We regret that there is no money to support participants in our Workshop-furthermore, we plan to charge a US$20 registration fee. The preparation and printing of the program-cum-abstracts booklet will be done in, and financed by, the Dept. of Mathematics and Statistics, University of Auckland. We would like to know your immediate, and hence initial, reaction to this invitation. Later on we would like to know who is coming, say by 30 June 1992, and if you're going to give a talk. We would then like to have the title and abstract by, say, 31 August 1992. Please reply to this invitation to George Styan--by e-mail to MT56@MUSICA.MCGILL.CA or by FAX to 1-514-398-3899. We look forward to hearing from you and to your participation down under at the end of next year! Professor George P. H. STYAN Department of Mathematics and Statistics McGill University, Burnside Hall 1240 805 ouest, rue Sherbrooke Street West Montr al, Qu bec, Canada H3A 2K6 Electronic mail: MT56@MUSICA.MCGILL.CA FAX (1-514) 398-3899. Tel. (1-514) 398-3845 ------------------------------ From: Bernard Philippe Date: Fri, 22 Nov 91 16:18:29 +0100 Subject: 1ST African Conference in Computer Science CALL FOR PAPERS 1ST AFRICAN CONFERENCE ON RESEARCH IN COMPUTER SCIENCE YAOUNDE, CAMEROON October 14-20, 1992 PRESENTATION Since 1986, the United Nations University (UNU) has been establishing a fruitful cooperation between the University of Yaounde, the Institut National de Recherche en Informatique et en Automatique (INRIA) and the United Nations University (UNU) with two major aims : - to provide support for a high level university cursus - to help settle a research team in the environment of the University of Yaounde. Numerous actions were undertaken to reach these goals and the French Ministry of Cooperation and Development is providing its support. In this rapidly evolving scientific context, the French Ministry of Cooperation and Development,INRIA, UNU and the University of Yaounde decided to organise the First African Conference on Research in Computer Science. The main goal of this conference is to present the research activities currently undertaken in the universities and research centers of Central Africa and West Africa, in the field of computer science as well as the one undertaken by students from this region who are preparing their doctorate thesis abroad. The African scientists will benefit from this conference in exchanging their ideas and intensifying their collaborations. Invited papers will be presented by world-known scientists. Software exhibitions will be organised during the conference and round tables on the topic " Computer Science" will be scheduled in parallel by the French mission of cooperation of Yaounde. TOPICS Software engineering Parallel Computing Scientific Computation Architecture Databases Networks Computer Vision Artificial Intelligence Programming Languages INSTRUCTIONS TO AUTHORS Authors are invited to submit, in French or in English, contributions on their most recent research results. 5 copies of the full text (20 double-space pages, title and abstract included) should be sent to the Conference Secretariat, before February 15, 1992. The front page should include the title of the communication, the name of the author (or authors) and the full address. In case of co-authors, clearly indicate the name of the person in charge of the correspondence with the organisers. Every submitted paper will be reviewed by the Programme Committee with the help of experts. The accepted papers will be published for the Conference. A financial support (travel and sojourn expenses) will be granted to the authors of the best papers. IMPORTANT DATES February 15, 1992 The full paper (5 copies) should be received by the Conference Secretariat May 1st, 1992 Notification of acceptance or refusal June 15, 1992 Distribution of the program June 30, 1992 Final version of the accepted paper should be received by the Conference Secretariat October 14-20, 1992 First African Conference on Research in Computer Science INFORMATION University of Yaounde Computer Science Department BP 812 YAOUNDE (Cameroon) Tel : + 237 22 47 95 Fax : + 237 22 13 20 INRIA-Rocquencourt Bureau des Colloques BP 105 78153 LE CHESNAY CEDEX (France) Tel: +(33) 1.39.63.56.00 Fax: +(33) 1.39 63 56 38 e-mail : symposia@gaite.inria.fr Brigitte KERHERVE Ecole Nationale Superieure des Telecommunications 46, rue Barrault 75634 PARIS Cedex 13 Tel: +(33) 1.45.81.78.81 Fax: +(33) 1.45.81.31.19 e-mail : kerherve@inf.enst.fr ------------------------------ From: SIAM Publications Department Date: Fri, 22 Nov 91 17:47 EDT Subject: Contents, SIAM Scientific and Statistical Computing CONTENTS SIAM JOURNAL ON Scientific and Statistical Computing March 1992 Volume 13, Number 2 A Scheme for Parallelizing Certain Algorithms for the Linear Inhomogeneous Heat Equation Steven M. Serbin Comparing Algorithms for Solving Sparse Nonlinear Systems of Equations Marcia A. Gomes-Ruggiero, Jose Mario Martinez, and Antonio Carlos Moretti Knot Selection for Least Squares Thin Plate Splines John R. McMahon and Richard Franke Numerical Approximation of Parametric Oriented Area-Minimizing Hypersurfaces Harold R. Parks Nonlinear Multigrid Applied to a One-Dimensional Stationary Semiconductor Model P. M. de Zeeuw An Iterative Method for Matrix Spectral Factorization T. J. Harris and J. H. Davis On the Structure of Jacobians for Spectral Methods for Nonlinear Partial Differential Equations Robert R. Russell, David M. Sloan, and Manfred R. Trummer Improving the Accuracy of Inverse Iteration Elizabeth R. Jessup and Ilse C. F. Ipsen Generalized Schwarz Splitting Wei Pai Tang Fourier Analysis of Finite Element Preconditioned Collocation Schemes M. O. Deville and E. H. Mund Sonic Flux Formulae P. L. Roe BI-CGSTAB: A Fast and Smoothly Converging Variant of BI-CG for the Solution of Nonsymmetric Linear Systems H. A. van der Vorst Timely Communication A Fast Reordering Algorithm for Parallel Sparse Triangular Solution Alex Pothen and Fernando L. Alvarado ------------------------------ End of NA Digest ************************** -------