From na-net@patience.stanford.edu Sun Nov 19 14:32:56 1989 Received: from crfsun.EPM.ORNL.GOV by cs.utk.edu with SMTP (5.61++/2.3-UTK) id AA02249; Sun, 19 Nov 89 14:32:41 -0500 Received: from msr.epm.ornl.gov by crfsun.EPM.ORNL.GOV (4.1/1.34) id AA05724; Sun, 19 Nov 89 14:32:19 EST Received: from [36.8.0.149] by msr.epm.ornl.gov (5.61/1.34) id AA19130; Sun, 19 Nov 89 14:30:25 -0500 Received: from patience.stanford.edu by beauty.stanford.edu (4.0/inc-1.5) id AA01960; Sun, 19 Nov 89 11:23:36 PST Received: from simplicity.stanford.edu by patience.stanford.edu (4.0/inc-1.5) id AA17945; Sun, 19 Nov 89 11:23:25 PST Received: by simplicity.stanford.edu (4.0/inc-1.5) id AA04737; Sun, 19 Nov 89 11:16:13 PST Date: Sun, 19 Nov 89 11:16:13 PST From: na-net@patience.stanford.edu Message-Id: <8911191916.AA04737@simplicity.stanford.edu> Return-Path: Subject: NA-NET distribution message Maint-Path: maintainer@na-net.stanford.edu To: na-net@patience.stanford.edu Reply-To: na-net@patience.stanford.edu Comment: requests, comments or problems to nanet@na-net.stanford.edu Comment: submissions to na@na-net.stanford.edu Status: RO NA Digest Sunday, November 19, 1989 Volume 89 : Issue 45 Today's Editor: Cleve Moler Today's Topics: Unsymmetric Eigenvalue Problem Fortran 77 to C Converter Available via Netlib International Conference on Numerical Methods Change of Address for Deepankar Medhi Kaj Madsen Visiting Multiflow Computer Positions at Southern Methodist Group Leader Position at Los Alamos ------------------------------------------------------- From: Alan Cline Date: Wed, 15 Nov 89 14:53:03 CST Subject: Unsymmetric Eigenvalue Problem Unsymmetric Eigenvalue Problem A problem that is important in dynamical systems is the computation of an eigenvalue of maximum real part given a large (perhaps of order in the thousands), sparse, real, unsymmetric matrix. (Since the matrix is real, there may be a complex conjugate pair having the maximum real part.) The matrix is parameterized and the region of interest is exactly that point where any of the eigenvalues enter the right half-plane, so the maximum real part may be quite small. Are there some suggestions for dealing with this problem? Please direct responses to cline@cs.utexas.edu. Alan Cline The University of Texas at Austin ------------------------------ From: Norm Schryer Date: Thu, 16 Nov 89 17:17:35 EST Subject: Fortran 77 to C Converter Available via Netlib The Unix command (echo filter f2c; cat file) | mail netlib@research.att.com converts the Fortran 77 in "file" to C and returns it via email. The converted C requires a "header" file which can be obtained by: echo "send f2c.h from f2c" | mail netlib@research.att.com The command echo "send index from f2c" | mail netlib@research.att.com returns an index of useful f2c information available from Netlib including a "man page", source for libraries, etc. F2c "just" prints out the C parse tree internally produced by f77, the reliable old Fortran 77 compiler of Stu Feldman. The programming was done by D. M. Gay of Bell Labs and Mark Maimone of Carnegie-Mellon University. The usual caveat applies: The service is free and you get what you pay for. An additional caveat is that a daemon saves the Fortran submitted to Netlib so we can do regression testing on f2c. We intend to put f2c in the public domain and want as much experience with it as possible before foisting it on the world. Comments, questions and complaints to Norm Schryer, nls@research.att.com, 201-582-2912. ------------------------------ From: Giovanni Monegato Date: Mon, 13 Nov 89 09:03 GMT+1 Subject: International Conference on Numerical Methods International Conference on NUMERICAL METHODS IN APPLIED SCIENCE AND INDUSTRY Torino, Italy, June 18-21,1990 Organized by: Seminario Matematico dell'Universita e del Politecnico di Torino Scientific Committee: F.Brezzi, C.Canuto, L.Gatteschi, G.Monegato Invited Speakers: F.Andreuzzi, O.Axelsson, I.Babuska, K.J.Bathe, C.A.Brebbia, J.Douglas, W.Hackbusch, T.J.R.Hughes, G.C.Hsiao, J.Lyness, G.Maier, P.P.Strona, W.Wendland There will be no short communication sessions Registration Fee: 200.000 Italian Lira; this amount includes the Proceeding of the Conference, four working lunches, gala dinner. For information write to: Numerical Methods Conference Dipartimento di Matematica Politecnico di Torino Corso Duca degli Abruzzi, 24 I-10129 Torino, Italy or to MAT1@ITOPOLI.BITNET ------------------------------ From: Deepankar Medhi Date: 14 Nov 89 08:46:00 CDT Subject: Change of Address for Deepankar Medhi I have left AT&T Bell Laboratories to join University of Missouri-Kansas City starting this fall. Please note my new address: Deepankar (Deep) Medhi Computer Science Telecommunications Program University of Missouri-Kansas City 5100 Rockhill Road Kansas City, MO 64110-2499 Phone: (816) 276-2006 FAX: (816) 276-5159 E-mail: dmedhi@vax2.cstp.umkc.edu or, dmedhi@umkcvax2.bitnet or, na.medhi... ------------------------------ From: Jerzy Wasniewski Date: Tue, 14 Nov 89 08:17:10 EST Subject: Kaj Madsen Visiting Multiflow Computer KAJ MADSEN TO SPEAK AT MULTIFLOW COMPUTER December 15th, 1989, 11:30 a.m. Multiflow Computer, Inc. 31 Business Park Drive Branford, CT 06405 (203) 488-6090 No Fee Attendance by reservation only Please contact Mike Bernhardt to register for this lecture. A METHOD FOR LINEAR L1-APPROXIMATION Kaj Madsen, Institute for Numerical Analysis The Technical University of Denmark This talk concerns the problem of minimizing the sum of the absolute values of m linear functions. This problem is similar (equivalent) to the linear programming problem, and it has previously been solved using active set strategies, similar to the Simplex Method for this problem. The new method presented is based on smoothing the (non-differentiable) L1 problem. A Newton type method is applied to the smooth problems. In the final stages of the iteration an active set strategy is applied. Numerical experiments with the new method indicate superiority to the simplex type methods by a factor of at least 2. ------------------------------ From: Ian Gladwell Date: Fri, 17 Nov 89 09:12:38 CST Subject: Positions at Southern Methodist Southern Methodist University Department of Mathematics Junior Tenure-Track Positions The Department of Mathematics at Southern Methodist University seeks applications for junior tenure-track positions with employment beginning Fall 1990. An outstanding candidate may be considered for a more senior position. Candidates should be active researchers in applied or numerical mathematics and should have a strong commitment to teaching. The department has an active doctoral program. Applicants must be able to teach graduate level courses in applied mathematics, numerical analysis or scientific computation. The teaching load for each position is two courses (six hours) per semester. There may also be visiting positions available in academic year 1990-91. Southern Methodist University has about 8000 students. The Department of Mathematics has a strong and ongoing commitment to the development of classical and modern applied mathematics. Thirteen of the sixteen full-time faculty are applied or numerical mathematicians. Current areas of research include mathematical modeling of physical and biological phenomena, nonlinear waves, perturbation methods, fluid dynamics, numerical bifurcation, mathematical software, numerical solution of differential equations, and parallel computation. Candidates should be active in one of these areas or a related one. Senior faculty and their interests include D.H. Anderson (mathematical biology), W.E. Ferguson (numerical partial differential equations), I. Gladwell (mathematical software), R. Haberman (nonlinear waves), G.W. Reddien (bifurcation theory), D.A. Reinelt (fluid dynamics) and L.F. Shampine (numerical ordinary differential equations). Among its computers, the university has a Sequent Symmetry for research use. Applications must be received by January 10, 1990. Please send a vita and three letters of recommendation to: Professor I. Gladwell, Chair, Department of Mathematics, Southern Methodist University, Dallas, Texas 75275 (Tel: (214) 692-2506, FAX: (214) 692-4099) who may also be contacted with any questions concerning the positions. I. Gladwell's email addresses are: na.gladwell@na-net.stanford.edu and h5nr1001 at smuvm1 (on bitnet) SMU is an equal opportunity/affirmative action/Title IX employer. ------------------------------ From: Andrew White Date: Fri, 17 Nov 89 15:06:58 MST Subject: Group Leader Position at Los Alamos Attached is a job ad for a Group Leader position at Los Alamos. I hope that this is self-explanatory, but if not plese send me e-mail at abw@lanl.gov. Andy White The Computing and Communications Division at the Los Alamos National Laboratory is seeking a candidate to provide management and technical leadership for the Computer Research Group. Current activities include general computational applied mathematics, signal processing, mathematical algorithms and libraries, experimental computing technology, computer performance measurement, expert systems, neural networks, speech recognition, advanced computing architectures, user tools, languages, pattern recognition, and image processing. AREAS OF RESPONSIBILITY o Providing management and leadership in computer research applicable to problems of interest to the Laboratory o Collaborating with universities, other Laboratories, and industrial partners o Recruiting and evaluating personnel o Salary administration, financial reporting, and affirmative action planning o Communicating and interacting with management and staff throughout the Laboratory, DOE, other government agencies, and academia The successful candidate should have extensive experience in the following areas: leading technical research efforts; managing and supervising technical staff; demonstrated ability in interacting with funding agencies, other research efforts, potential users of research results, and management; and a proven research record in some area of computer research, application of computers to problem solving, and development of computer software. A Master's, Ph.D., or equivalent experience in computer science, physics, mathematics, or related scientific or engineering field, is necessary. The Los Alamos National Laboratory, which is located in the scenic mountains of northern New Mexico, offers a competitive salary and benefits package. FOR INITIAL CONSIDERATION, submit a resume no later than 12/1/89 to Andy White, Los Alamos National Laboratory, MS B260, #90878RA, Los Alamos, New Mexico 87545. For additional information, call Andy at (505) 667-6164. TO FORMALLY APPLY, submit a resume to Ray Archuleta, Los Alamos National Laboratory, Personnel Services Division, #90878RA, Los Alamos, New Mexico 87545. Los Alamos is an Affirmative Action/Equal Opportunity Employer. Security clearance required. ------------------------------ End of NA Digest ************************** -------