Subject: NA Digest, V. 92, # 12 NA Digest Sunday, March 22, 1992 Volume 92 : Issue 12 Today's Editor: Cleve Moler The MathWorks, Inc. moler@mathworks.com Today's Topics: Today's Topics for Last Week's Digest Approximation Theory Network Delay Differential Equations Software Available for Boundary Value Problems Preprints/Software Available via Anonymous FTP. Mathematical Circus at Ecole Nationale Superieure de Lyon, France. Workshop on PDEs at RPI Neural Networks and Parallel Distributed Processing Contents: SIAM Control and Optimization 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: Cleve Moler Date: Sun, 15 Mar 92 15:27:46 PST Subject: Today's Topics for Last Week's Digest I forgot the Todays' Topics list in last week's Digest. For those of you that keep around copies, you might want to replace last week's header with: | |Subject: NA Digest, V. 92, # 11 | | | |NA Digest Sunday, March 15, 1992 Volume 92 : Issue 11 | | | |Today's Editor: | | | | Cleve Moler | | The MathWorks, Inc. | | moler@mathworks.com | | | |Today's Topics: | | | | Change of Address for Cleve Moler | | New Address for Siamak Hassanzadeh | | Address Change for C. A. de Moura | | Bracewell on the Hartley Transform | | Errata for Strikwerda's Textbook | | Conference on Applications of Dynamical Systems | | Short Course on Numerical Optimization and Software | | Scalable High Performance Computing Conference | | IMA Workshop on Linear Algebra for Signal Processing | | Visiting Positions at RIACS | | Contents: Linear Algebra and its Applications | | | |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: Carl deBoor Date: Thu, 19 Mar 92 08:14:22 CST Subject: Approximation Theory Network Dear Colleagues, We are very pleased to announce the formation of AT-NET (Approximation Theory Network). AT-NET is intended as a ready means for distributing information to the Approximation Theory community. The more people know about it and sign on, the better for the community. It was started by Allan Pinkus and Carl de Boor, and is looking for volunteers to help run it. If you have something of general interest to the Approximation Theory community, such as o announcement of a meeting o a question about a technical point o a reference you cannot find o the table of contents of the most recent issue of the AT journal you run o a short description of the great AT book you have just written o announcement of a new result or of availability of reports o and the like send it to maprx99@technion.technion.ac.il (or maprx99@technion.bitnet) for possible distribution to the net. To sign on to AT-NET, do one of the following from the e-mail address you wish to have all messages sent from: a) If you have the "tell" option, simply type: TELL LISTSERV@TECHNION.TECHNION.AC.IL SUB AT-NET b) For those without the "tell" option, send an e-mail message to: LISTSERV@TECHNION.TECHNION.AC.IL with the body of the message consisting of the one line: SUB AT-NET Your subscription should be automatically accepted. You will receive notice of this fact, along with additional information. If you have problems, write to Allan Pinkus at maprx99@technion.technion.ac.il or Carl de Boor at atnet@stolp.cs.wisc.edu AT-NET is not an "interactive" list. That is, users cannot post messages directly to all other users. Messages for distribution should be sent to maprx99@technion.technion.ac.il Please help spread the word, and pass this message on to others who you think might be interested. Carl de Boor, Allan Pinkus ------------------------------ From: Karel in 't Hout Date: Wed, 18 Mar 1992 16:10 MET Subject: Delay Differential Equations I am very much interested in stiff initial value problems for delay differential equations which arise in practise. In recent years many numerical methods for solving stiff initial value problems for delay differential equations have been developed. It is not clear to me, however, to what extend these problems actually arise in practise. Therefore, I would appreciate any suggestion. All those who respond will receive a summary of all contributions. Karel in 't Hout University of Leiden The Netherlands ------------------------------ From: Martin Hermann Date: 16 Mar 92 10:53 Subject: Software Available for Boundary Value Problems The actual versions of our program packages RWPM and RWPKV can be obtained on 3 discettes from Martin Hermann (na.hermann@na-net.ornl.gov) Friedrich Schiller University Jena Mathematical Faculty UHH, 17,OG D - (O)6900 JENA Germany for a nominal handling charge. Both packages are implemented in MS-Fortran 5.0 and can be run on a PC. The computation process is graphically depicted. RWPM: Shooting code for nonlinear two-point boundary value problems; boundary conditions r(y(a),y(b))=0: multiple shooting boundary conditions rp(y(a))=0, rq(y(a),y(b))=0, p+q=n: nonlinear stabilized march method RWPKV: Path-following, automatic detection and computation of simple singular points. The code is based on RWPM. (Ref.: Appl.Math.Letters 5(1992), pp.57-62) ------------------------------ From: Venkataramanan Balakrishnan Date: Fri, 20 Mar 92 17:04:48 PST Subject: Preprints/Software Available via Anonymous FTP. Some technical preprints and research software from Stephen Boyd's research group at the Electrical Engineering Department at Stanford University are now available via anonymous ftp to isl.stanford.edu. The files are organized more or less along the lines suggested by Pete Stewart in a recent NANET message. /pub/boyd contains, among other things: book: Errata for "Linear Controller Design: Limits of Performance", by Boyd and Barratt. msd: Matlab and C source for minimum stability degree of parameter dependent linear systems via a branch and bound algorithm (described in a paper in the reports directory). Also C source for a generic branch and bound algorithm. qdes: Sun 3 & 4 binaries for qdes (a simple proof-of-concept code for controller design convex optimization using the Q (ie Youla) parametrization), supporting Matlab scripts, lots of documentation, and many examples (including the qdes source for all examples that have appeared in publications). reports:Postscript preprints on topics such as: global optimization in control system design & analysis; closed-loop convex formulation of singular value loop shaping; optimization and control of rapid thermal processing systems; 1992 ACC preprints dealing with systems with structured perturbations; computing the worst-case peak gain of a system with structured perturbations ... Ragu Balakrishnan Elec. Eng. Dept. Stanford University 110 Durand Bldg. Stanford CA 94305 e-mail: ragu@isl.stanford.edu ------------------------------ From: Claudine Schmidt-Laine Date: Mon, 16 Mar 92 16:20:52 +0100 Subject: Mathematical Circus at Ecole Nationale Superieure de Lyon, France. MATHEMATICAL CIRCUS Location: Ecole Normale Superieure de Lyon, France Dates: April 3-4 1992 " SOME MATHEMATICAL ASPECTS OF COMBUSTION THEORY" The "RENCONTRES MATHEMATIQUES", Mathematical Circus, is an informal meeting of mathematicians to gather around a principal speaker and a leading subject. It always takes place at ENSL, about every month. The previous ones were about homogeneisation theory, bifurcation theory, kinetics equations ... This time the leading speaker is H. BERESTYCKI, University of Paris VI. He will give three talks covering various aspects of flame theory, free boundary problem, qualitative aspects of elliptic equations and stability. He will be surrounded by: C-M BRAUNER: University of Bordeaux, France G. JOULIN: ENSMA Poitiers, France W. DOLD: University of Bristol, England 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 participants. GRADUATE STUDENTS ARE WELCOME ! We have arranged special conference train fares with SNCF. Ask just for a "Congress Ticket". A restricted number of uncharged rooms are at our disposal on Campus. There is also some hotels a few minutes' ride from ENSL campus. To register, please send e-mail to Claudine Schmidt-Laine at the adress below. As usual, there is no registration fee. The circus will begin on Friday morning and will end on Saturday noon. For further information please contact: Claudine Schmidt-Laine Unite de Mathematiques Pures et Appliquees Ecole Normale Superieure de Lyon 46, Allee d'Italie F-69364 LYON Cedex 07 FRANCE Phone: (33) 72.72.80.34 Fax: (33) 72.72.80.80 e-mail: schmidt@frensl61.bitnet ------------------------------ From: Joe Flaherty Date: Tue, 17 Mar 92 14:48:49 EST Subject: Workshop on PDEs at RPI U.S. Army Research Office-Sponsored Workshop on Adaptive Methods for Partial Differential Equations May 17-20, 1992 Scientific Computation Research Center Rensselaer Polytechnic Institute Troy, New York The workshop will emphasize new ideas and innovations in adaptive numerical methods for solving partial differential equations. Themes include solution reliability, a posteriori error estimation, parallel computation, software environments, and applications. The workshop will consist of a one-day tutorial session (on Sunday May 17), approximately fifteen invited lecturers, contributed papers sessions, demonstrations, and technical discussions. Organizing Committee: Joseph E. Flaherty and Mark S. Shephard, Rensselaer Polytechnic Institute. Invited Speakers to date include Ivo Babuska University of Maryland H. Thomas Banks University of Southern California Ted Belytschko Northwestern University Marsha Berger RIACS Peter Deuflhard Conrad Zuse Zentrum Richard Ewing University of Wyoming William Gropp Argonne National Laboratory J. M. Hyman Los Alamos National Laboratory Stephen McCormick University of Colorado, Denver Ahmed Noor University of Virginia J. Tinsley Oden University of Texas Barna Szabo Washington University For further information or to submit a one-page abstract contact: Pam Paslow, Conference Secretary Department of Computer Science Rensselaer Polytechnic Institute Troy, NY 12180 (518) 276-8114 Fax: (518) 276-4033 E-mail: paslowp@turing.cs.rpi.edu ------------------------------ From: TEPPER@cvax.ipfw.indiana.edu Date: Wed, 18 Mar 1992 15:42:20 -0500 (EST) Subject: Neural Networks and Parallel Distributed Processing Fifth NN & PDP CONFERENCE PROGRAM - April 9, 10 and 11,1992 The Fifth Conference on Neural Networks and Parallel Distributed Processing at Indiana University-Purdue University at Fort Wayne will be held April 9, 10, and 11, 1992. Conference registration is $20 (on site). Students and members or employees of supporting organizations attend free. Some limited financial support might also be available to allow students to attend. Inquiries should be addressed to: US mail: Pr. Samir Sayegh Physics Department Indiana University-Purdue University Fort Wayne, IN 46805-1499 email: sayegh@ipfwcvax.bitnet FAX: (219)481-6880 Voice: (219) 481-6306 OR 481-6157 All talks will be held in Kettler Hall, Room G46: Thursday, April 9, 6pm-9pm; Friday Morning & Afternoon (Tutorial Sessions), 8:30am-12pm & 1pm-4:30pm and Friday Evening 6pm-9pm; Saturday, 9am-12noon. Parking will be available near the Athletic Building or at any Blue A-B parking lots. Do not park in an Orange A lot or you may get a parking violation ticket. Special hotel rates (IPFW corporate rates) are available at Canterbury Green, which is a 5 minute drive from the campus. The number is (219) 485-9619. The Marriott Hotel also has corporate rates for IPFW and is about a 10 minute drive. Their number is (219) 484-0411. Another hotel with corporate rates for IPFW is Don Hall's Guesthouse (about 10 minutes away). Their number is (219) 489-2524. ------------------------------ From: Laura Helfrich Date: Fri, 20 Mar 92 09:20:11 EST Subject: Contents: SIAM Control and Optimization Table of Contents SIAM Journal on Control and Optimization Vol. 30, No. 4, July 1992 Regularized Maximum Likelihood Estimate for Infinite-Dimensional Parameter in Stochastic Parabolic Systems Shin Ichi Aihara Algebraic Riccati Equations and the Distance to the Nearest Uncontrollable Pair P. Gahihnet and A. J. Laub Wellposedness and the Lavrentiev Phenomenon Tullio Zolezzi Parameter Convergence and Uniqueness in Nonminimal Parameterizations for Multivariable Adaptive Control Yosef Willner, Michael Heymann, and Marc Bodson Overtaking Optimal Regulation and Tracking of Piecewise Diffusion Linear Systems Alain Haurie and Arie Leizarowitz Acceleration of Stochastic Approximation by Averaging B. T. Polyak and A. B. Juditsky Strongly and Weakly Relaxed Controls for Time Delay Systems Javier F. Rosenblueth Unmixed Solutions of the Discrete-Time Algebraic Riccati Equation H. K. Wimmer On the Existence of Control Lyapunov Functions: Generalizations of Vidyasagar's Theorem on Nonlinear Stabilization John Tsinias Parameter Estimation for Distributed Equations in Parameter-Dependent State Spaces: Applications to Shape Identification Patricia K. Lamm Some Properties of Distributed Control Systems with Finite-Dimensional Input Space Luciano Pandolfi On the Continuous Dependence with Respect to Sampling of the Linear Quadratic Regulator Problem for Distributed Parameter Systems I. G. Rosen and C. Wang On the Principle of Smooth Fit for a Class of Singular Stochastic Control Problems for Diffusions Jin Ma ------------------------------ End of NA Digest ************************** -------