Subject: NA Digest, V. 94, # 36 NA Digest Monday, September 5, 1994 Volume 94 : Issue 36 Today's Editor: Cleve Moler The MathWorks, Inc. moler@mathworks.com Today's Topics: Constraints Between Two Surfaces New Address for Paul Van Dooren FTP at Liverpool WWW versions of LP and NLP FAQs Conference on Control & Its Applications Graphics Interface Conference Conference On Spectral And High Order Methods Workshop on Computational Aeroacoustics Contents, Interval Computations 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: Huali Bao Date: Thu, 1 Sep 94 16:42:06 +0200 Subject: Constraints Between Two Surfaces Dear members of NA-NET, I would like to pose a question which may be simple to you. I have two space surfaces: F1(x,y,z) = 0 F2(x,y,z,t) = 0 F1 is a fixed spherical surface while F2 is the surface of something like ellipsoids and it's rolling and/or sliding on F1. My problem is how to describe the constraints, that is the two surfaces always shere one common point and a same tangent plane. I tried by introducing a variable pc(t), the contact point at time t. Unfortunately it did not work out as I had too many vaviables in my problem. I am wondering if someone knows some simpler ways to solve this problem. Many Thanks in advance Huali BAO ------------------------------ From: Paul Vandooren Date: Mon, 5 Sep 1994 11:50:31 --100 Subject: New Address for Paul Van Dooren As of September 1st, 1994, my new address is Paul Van Dooren Belgium Centre for Systems Engineering and Applied Mechanics (CESAME) Batiment Euler (Rm A.119) 4, avenue Georges Lemaitre B-1348 Louvain la Neuve Belgium Tel : +32-10-47-8040 Secr: +32-10-47-2597 Fax : +32-10-47-2180 e-mail: vandooren@anma.ucl.ac.be Home address: Paul and Maggie Van Dooren-Van Ende Herfstlaan 4 B-3010 Kessel-Lo Tel: +32-16-261930 I you have tried to reach me via mail, tel, fax or e-mail the last ------------------------------ From: K. Chen Date: Thu, 1 Sep 1994 14:18:38 +0100 Subject: FTP at Liverpool The FTP site at University of Liverpool is addressed as ftp.liv.ac.uk (138.253.100.70) and its public domain directory pub/Stats+Comp_Maths is intended to keep research reports and papers of staff members of Department of Stats and Computational Maths. Currently three papers (on Error equidistribution; Quadrilateral mesh generation; Singular integral equations respectively) are available. Hopefully more will be added on soon. World wide web users may try www ftp://ftp.liv.ac.uk/pub/Stats+Comp_Maths/intro.html to access the content file. ------------------------------ From: John Gregory Date: Fri, 2 Sep 94 14:44:14 CDT Subject: WWW versions of LP and NLP FAQs WWW versions of the Linear Programming FAQ and the Nonlinear Programming FAQ are now available. Tools such as Mosaic will allow you to read these HTML-marked files, and then you will be able to click on certain points of interest to take you to other places (such as FTP sites of mentioned software). To view these documents, use the following URLs: ftp://ftp.cray.com/pub/FAQs/linear-programming-faq.html and ftp://ftp.cray.com/pub/FAQs/nonlinear-programming-faq.html These will be updated (at least) monthly, as new information comes in to me. I will extract an ASCII version of the FAQs and post them to sci.op-research on the first working day of each month, as I have done in the past. As with any new enterprise, there may be a "shakedown" period as I correct problems that arise, so please be patient. Even more than usual, I solicit constructive feedback on the form and content of these two FAQs. John W. Gregory jwg@cray.com 612-683-3673 Applications Dept. Cray Research, Inc. Eagan, MN 55121 two months you will undoubtedly have had difficulties. I apologize for these problems, which can be expected with any move overseas. ------------------------------ From: Trini Flores Date: Mon, 29 Aug 94 10:58:28 EST Subject: Conference on Control & Its Applications Call for Participation... Third SIAM Conference on Control and Its Applications April 27-29, 1995 Adam's Mark Hotel St. Louis, Missouri Dates to Remember: SEPTEMBER 9, 1994 -- Deadline for submission of minisymposium proposals. OCTOBER 7, 1994 -- Deadline for submission of contributed abstracts. Submissions via E-Mail are welcome. Contact meetings@siam.org to receive either a minisymposium proposal form, or a plain TeX or LaTeX macro for submitting abstracts. For more information about this conference, contact meetings@siam.org or access gopher.siam.org We are looking forward to your participation in this conference. Thank you. The Conference Organizing Committee ------------------------------ From: Richard Bartels Date: Tue, 30 Aug 94 13:19:06 -0400 Subject: Graphics Interface Conference GRAPHICS INTERFACE'95 15 - 19 MAY 1995 QUEBEC CITY, QUEBEC, CANADA CALL FOR PAPERS Contributions are solicited describing unpublished research results and applications experience in all areas of computer graphics, including: Image Synthesis & Realism User Interfaces Shading & Rendering Algorithms Windowing Systems Geometric Modeling Computer Cartography Computer Animation Image Processing Interactive Techniques Medical Graphics Graphics for CAD/CAM Graphics in Education Computer-Aided Building Design Graphics & the Arts Industrial & Robotics Applications Visualization Graphics in Business Graphics in Simulation Send five (5) copies of a full paper (20 double-spaced pages or less) to the Program Chair by 31 October, 1994. Include full names, addresses, phone numbers, fax numbers and email addresses for all authors. One author should be designated the contact author for all subsequent correspondence regarding the paper. Notification of acceptance or rejection will be mailed to the contact author by 23 January, 1995. Accepted papers will be published in the Conference Proceedings. Camera ready copies of accepted papers are due 25 March, 1995. Each paper will be allotted up to eight (8) pages in the proceedings. Extra charges will be made for papers exceeding the limit and for color photos. Workshops: Interested parties are encouraged to submit proposals for Workshops to the Program Chair by 15 November, 1994. Electronic Theatre: Film and video tapes that illustrate the use of computer graphics and interactive techniques will be considered for presentation at the 1995 conference. This material could present new techniques, the artistic application of computer graphics, or a historical perspective of the field. All submitted material will be reviewed. Due to time constraints, only portions of some film or video tapes may be shown. The committee reserves the right to edit all submitted material for presentation. Send submissions to the Program Chair by 31 March, 1995. Program Chair: Przemyslaw Prusinkiewicz Dept. of Computer Science University of Calgary 2500 University Drive N.W. Calgary, Alberta T2N 1N4 Tel: 403-220-5494 Fax: 403-284-4707 email: pwp@cpsc.ucalgary.ca Program Committee: Chandrajit L. Bajaj Purdue University Richard Bartels University of Waterloo Jules Bloomenthal George Mason University Tom Calvert Simon Fraser University Alain Fournier University of British Columbia Ned Greene Apple Computer Marylin Mantei University of Toronto Avi Naiman Hong Kong University Darwyn Peachey Pixar Mikio Shinya NTT Japan Neil Stewart University of Montreal Colin Ware University of New Brunswick Brian Wyvill University of Calgary ------------------------------ From: Andrew Ilin Date: Wed, 31 Aug 1994 12:18:12 -0500 (CDT) Subject: Conference On Spectral And High Order Methods FIRST ANNOUNCEMENT AND CALL FOR PAPERS International Conference On Spectral And High Order Methods ICOSAHOM'95 May 22--26, 1995 Houston, Texas GENERAL INFORMATION ICOSAHOM'95 is the 3rd of a series of conferences held in Como (Italy) in 1989 and Montpellier (France) in 1992. The development of high performance computers has made spectral and high order methods one of the most important techniques in modern scientific and engineering computing. The aim of the conference is to bring together leading researchers, both established and young scientists to survey and review the current state of research in this domain. Funding for the conference has been requested from a series of federal agencies. Anticipated use will include travel support for speakers who do not have alternative support (graduate students, participants from developing and former Soviet-block countries). MAIN TOPICS 1. Spectral methods. 2. High order finite differences. 3. h-p version of finite elements. 4. Approximation of PDE's using wavelet techniques. SCIENTIFIC COMMITTEE Ivo Babuska, U. of Maryland, Christine Bernardi, U. of Paris, Claudio Canuto, Politecnico di Torino, Michel Deville, U. Cath. de Louvain, David Gottlieb, Brown University, Heinz O. Kreiss, UCLA Yvon Maday, U. of Paris, Anthony T. Patera, MIT Alfio Quarteroni, Politecnico di Milano, L. Ridgway Scott, U. of Houston, CALL FOR PAPERS There will be seven fifty-minute invited presentations, a series of about fifty contributed papers selected by the scientific committee and a poster session. Proposals for mini--tracks will also be considered. They should include a proposed topic and expected list of speakers. Accepted contributed papers will be presented as thirty-minute talks in two parallel sessions and published in the Proceeding of ICOSAHOM'95. Authors are invited to submit three copies of an abstract of at least one typed page by November 1, 1994 to Leigh Ann Jacks, Conference Manager ICOSAHOM'95 Department of Mathematics University of Houston Houston, TX 77204-3476. E-mail submissions or requests for further information to the following address are also welcome: ICOSAHOM@math.uh.edu IMPORTANT DEADLINES Submission of abstracts: November 1, 1994. Authors to receive notification regarding acceptance and full instructions for submission of papers: December 15, 1994. Full papers due: February 1, 1995. ------------------------------ From: Ristorcelli Joseph Date: Fri, 2 Sep 1994 13:32:48 -0400 Subject: Workshop on Computational Aeroacoustics ICASE/LaRC WORKSHOP ON BENCHMARK PROBLEMS IN COMPUTATIONAL AEROACOUSTICS October 24-26, 1994 Holiday Inn Hampton - Coliseum Hotel and Conference Center Hampton, Virginia Computational aeroacoustics (CAA), although at present in its infancy, is fast emerging to occupy a position equal in importance to theory and experiment. A feature that distinguishes CAA from computational aerodynamics is the need for a faithful representation of relatively low-amplitude linear and nonlinear wave propagation processes. The purpose of the Workshop on the Benchmark Problems in Computational Aeroacoustics is to evaluate the accuracy and efficiency of numerical methods in a systematic fashion as applied to certain elementary testbed problems which characterize the difficulties of CAA. This Workshop is a sequel to the first Workshop on Computational Aeroacoustics held in April 1992, which focused on assessing the state-of-the-art and defining future directions of research [Springer-Verlag 1993]. We envision a third workshop which will focus on more realistic benchmark problems. These present test cases are confined to unsteady two-dimensional inviscid problems where "exact" solutions exist to encourage broad participation. The submissions are assessed by a scientific committee. In addition to discussing the benchmark problems, the Workshop will conduct a panel discussion on the Industrial Perspective on the Critical Issues of Computational Aeroacoustics and an overview of experimentally observed phenomena that can be used in code validation. If you would like to attend or would like further information please notify: Emily Todd ICASE, Mail Stop 132C NASA Langley Research Center Hampton, VA 23681-0001 Telephone: (804) 864-2175; E-mail: emily@icase.edu; FAX: (804) 864-6134 ------------------------------ From: R. Baker Kearfott Date: Wed, 31 Aug 1994 13:01:45 -0500 Subject: Contents, Interval Computations Interval Computations. - 1993. - N 3 (Special Issue: Proceedings of the International Conference on Numerical Analysis with Automatic Result Verification. Lafayette, Louisiana, USA, Feb. 25 - March 1, 1993. - Vol. 2) CONTENTS E. R. Hansen Computing Zeros of Functions Using Generalized Interval Arithmetic 3 C. Hu, R. B. Kearfott, and A. Awad On Bounding the Range of Some Elementary Functions in FORTRAN--77 29 R. Van Iwaarden Automatic Differentiation Applied to Unconstrained Nonlinear Optimization with Result Verification 41 L. Jaulin and E. Walter Guaranteed Nonlinear Parameter Estimation via Interval Computations 61 J. B. Keiper Interval Arithmetic in Mathematica 76 L. J. Kohout and I. Stabile Interval-Valued Inference in Medical Knowledge-Based System CLINAID 88 C. Falc\'o Korn and Ch. Ullrich Verified Solution of Linear Systems Based on Common Software Libraries 116 B. P. Kristinsdottir, Z. B. Zabinsky, T. Csendes, and M. E. Tuttle Methodologies for Tolerance Intervals 133 A. Leclerc Parallel Interval Global Optimization and Its Implementation in C++ 148 S. M. Markov Some Interpolation Problems Involving Interval Data 164 M. Nakamura, R. Mines, and V. Kreinovich Guaranteed Intervals for Kolmogorov's Theorem (and Their Possible Relation to Neural Networks) 183 Advertisement Journal of Symbolic Computations: Special Issue on Validated Numerical Methods and Computer Algebra 200 Requirements for manuscript preparation 202 Requirements for manuscript preparation (in Russian) 203 Addresses of the editorial board members 204 Contents 206 -------------------------------------------------------------------- Interval Computations. - 1993. - N 4 (Special Issue: Proceedings of the International Conference on Numerical Analysis with Automatic Result Verification. Lafayette, Louisiana, USA, Feb. 25 - March 1, 1993. - Vol. 3) CONTENTS V. M. Nesterov How To Use Monotonicity-Type Information To Get Better Estimates of the Range of Real-Valued Functions 3 J. Rohn Cheap and Tight Bounds: The Recent Result by E. Hansen Can Be Made More Efficient 13 M. J. Schaefer Precise Zeros of Analytic Functions Using Interval Arithmetic 22 C. A. Schnepper and M. A. Stadtherr Application of a Parallel Interval Newton/Generalized Bisection Algorithm to Equation-Based Chemical Process Flowsheeting 40 M. J. Schulte and E. E. Swartzlander, Jr. Parallel Hardware Designs for Correctly Rounded Elementary Functions 65 L. Simcik and P. Linz Boundary-Based Interval Newton's Method 89 O. Sirisaengtaksin and V. Kreinovich Neural Networks That Are Not Sensitive To The Imprecision of Hardware Neurons 100 U. Storck Verified Calculation of the Nodes and Weights for Gaussian Quadrature Formulas 114 I. B. Turksen Interval Valued Fuzzy Sets and Fuzzy Connectives 125 V. M. Veliov Computation of Integrals of Uncertain Vector Functions 143 E. Villa, A. Bernat, and V. Kreinovich Estimating Errors of Indirect Measurement on Realistic Parallel Machines: Routings on 2-D and 3-D Meshes That are Nearly Optimal 154 K. Villaverde and V. Kreinovich A Linear-Time Algorithm That Locates Local Extrema of a Function of One Variable From Interval Measurement Results 176 A. G. Yakovlev Multiaspectness and Localization 195 Meetings J. Wolff von Gudenberg International Conference INTERVAL'94 210 Advertisement 212 Requirements for manuscript preparation 214 Requirements for manuscript preparation (in Russian) 214 Addresses of the editorial board members 216 Contents 218 ------------------------------ From: Richard Brualdi Date: Wed, 31 Aug 1994 18:21:14 -0500 (CDT) Subject: Contents, Linear Algebra and its Applications Linear Algebra and Its Applicatios Contents Volume 210 Fourth Special Issue on Statistics and Linear Algebra Preface 1 Gene H. Golub (Stanford, California) and Hongyuan Zha (University Park, Pennsylvania) Perturbation Analysis of the Canonical Correlations of Matrix Pairs 3 Shubhabrata Das (Missoula, Montana) and Pranab Kumar Sen (Chapel Hill, North Carolina) Restricted Canonical Correlations 29 Steven J. Leon (North Dartmouth, Massachusetts) Maximizing Bilinear Forms Subject to Linear Constraints 49 J. Dauxois, Y. Romain, and S. Viguier-Pla (Toulouse, France) Tensor Products and Statistics 59 Geoff A. Latham and Robert S. Anderssen (Canberra, Australia) Assessing Quantification for the EMS Algorithm 89 Pawel R. Pordzik (Poznan, Poland) and Gotz Trenkler (Dortmund, Germany) Pre-test Estimation in the Linear Regression Model With Competing Restrictions 123 S. R. Searle (Ithaca, New York) Extending Some Results and Proofs for the Singular Linear Model 139 A. A. Papadopoulou and P.-C. G. Vassiliou (Thessaloniki, Greece) Asymptotic Behavior of Nonhomogeneous Semi-Markov Systems 153 D. Q. Wang and C. R. O. Lawoko (Palmerston North, New Zealand) Estimation of Parameters for Normally Distributed Random Matrices 199 Yasuko Chikuse (Takamatsu-shi, Kagawa-ken, Japan) Generalized Noncentral Hermite and Laguerre Polynomials in Multiple Matrices 209 Jorma Kaarlo Merikoski (Tampere, Finland), Humberto Sarria, and Pablo Tarazaga (Mayaguez, Puerto Rico) Bounds for Singular Values Using Traces 227 Hans Joachim Werner (Bonn, Germany) When is B_A_ a Generalized Inverse of AB? 255 B. Mond (Bundoora, Victoria, Australia) and J. E. Pecric (Zagreb, Croatia) Inequalities With Weights for Powers of Generalized Inverses. II 265 Author Index 273 ------------------------------ End of NA Digest ************************** -------