Subject: NA Digest, V. 93, # 3 NA Digest Monday, January 18, 1993 Volume 93 : Issue 3 Today's Editor: Cleve Moler The MathWorks, Inc. moler@mathworks.com Today's Topics: Alan Turing's Reports Help on Minimization of Sums of Rational Functions X.400 Mail to Na-Net Change of Address for Hans Kraaijevanger Elementary Math Functions Graduate Students in Computational Optimization Householder Symposium Deadline Mathematical Modeling and Scientific Computation Mathematical Circus at ENS-LYON, France Simulation and Monte Carlo Methods Parallel Computing Meeting in Obninsk (Russia) Parallel Programming Position in Sydney Position at George Mason University Graduate Program at George Washington University 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: Vincenzo De Florio Date: Mon, 11 Jan 93 13:23:53 MET Subject: Alan Turing's Reports Dear Sirs, I'd like some help about the location and availability of books containing articles by A.M. Turing. Thanks a lot - Vincenzo De Florio deflorio@minsky.csata.it edf@minsky.csata.it ------------------------------ From: Gabriel Taubin Date: Mon, 11 Jan 1993 10:44:27 -0500 Subject: Help on Minimization of Sums of Rational Functions Help is sought on references on the numerical minimization of functions of the following type : f(x) = \sum_{i=1}^{m} \frac{x^t M_i x}{x^t N_i x} where x ia a n-dimensional vector, and the M_i's and N_i's are symmetric nonnegative definite matrices. Please reply to : - Gabriel Taubin IBM T.J.Watson Research Center Email : taubin@watson.ibm.com ------------------------------ From: Volker Kunert Date: Tue, 12 Jan 1993 17:29:23 +0100 Subject: X.400 Mail to Na-Net In the NA-Net helpfile are the addresses of NA-Net given in RFC832-Form. Unfortunately some people have to use X.400 addresses that are not given in the help file. From Germany I used the following address c=de;a=dbp;p=gov;o=ornl;ou=na-net;s=digest;gi=na for na.digest@na-net.ornl.gov. I even don't know, if for all countries one valid X.400 address can be given for Oak Ridge. Volker. Volker Kunert Martin-Luther-Universitaet Halle-Wittenberg Kunert@Mathematik.Uni-Halle.dbp.de Institut fuer Numerische Mathematik NA.Kunert@NA-Net.Ornl.Gov Weinbergweg 17 D-O 4050 Halle (Saale), Germany ------------------------------ From: Hans Kraaijevanger Date: Mon, 18 Jan 1993 16:20:20 MET+0100 Subject: Change of Address for Hans Kraaijevanger Dear friends and collegues, Recently I have left the University of Leiden and accepted a position as research mathematician at Shell in the Netherlands. My new E-mail address is KRAAIJEVANGERJ@KSEPL.NL (alternatively, one may continue to use NA.KRAAIJEVANGER@NA-NET.ORNL.GOV, of course). My mailing address is my private address: J.F.B.M. Kraaijevanger, Beukenrode 396, 2215 JV Voorhout, The Netherlands. Telephone numbers are: 31-70-3112318 (work) 31-2522-30032 (home) Hans Kraaijevanger. ------------------------------ From: David Youatt Date: Mon, 18 Jan 93 12:11:52 EST Subject: Elementary Math Functions I'm hoping you can direct me to current methods for implementing sin, cos, sqrt, etc. on systems that use IEEE754. So far, I'm almost into the '80s with regard to checking references (e.g. - Cody and Wait, and Hart), so I'm assuming there are much better (i.e. - faster) methods. Thank you. Please reply via email, and thanks in advance. -- David Youatt, dpy@sgi.com, (508) 562-4800 ------------------------------ From: Bill Hager Date: Fri, 15 Jan 93 21:24:53 EST Subject: Graduate Students in Computational Optimization Attention: Graduate students interested in attending Conference on Large-Scale Optimization, University of Florida, Gainesville, FL, Feb. 15-17, 1993 Contact Bill Hager (hager@math.ufl.edu) immediately. ------------------------------ From: Tony Chan Date: Fri, 15 Jan 93 12:29:23 +0800 Subject: Householder Symposium Deadline REMINDER for HOUSEHOLDER SYMPOSIUM, June 13-18, 1993 This is a brief reminder that the deadline for submitting an abstract is February 1, 1993. Please send them to: Householder 93 c/o Babette Dalton Department of Mathematics University of California, Los Angeles 405 Hilgard Avenue Los Angeles, California 90024-1555 e-mail: householder93@math.ucla.edu Please send at least a hardcopy. TeX files, in addition, are also welcomed. If you missed the original announcements, please send an email to the above address. ------------------------------ From: Ralph B. Kearfott Date: Tue, 12 Jan 93 09:48:21 CST Subject: Mathematical Modeling and Scientific Computation Date: September 14--17, 1993 Place: Sozopol, Bulgaria Conference Title: Mathematical Modeling and Scientific Computation (MMSC-93) Official Language: English The purpose of the conference is to make new methodologies for scientific computation and new software tools widely available, to promote contacts between software companies and diverse groups of specialists, and to train and encourage beginning researchers. Topics include advanced numerical methods (involving interval and parallel techniques) and applications, mathematical models with interval-valued input data, enclosure methods with automatic result verification, interval methods in automatic theorem proving, program packages, and applied modeling. Papers, nominally four pages long, should be submitted via e-mail and in printed form to one of the contact persons by April 1, 1993. Notification of acceptance will be by June 15, 1993. Preregistration ($100 U.S.) is before July 15, 1993, and on-site registration is $130. Contact persons: S. Markov (chairman), N. Dimitrova (secretary) Institute of Biophysic,s BAS Acad. G. Bonchev str. bl. 21 BG-1113 Sofia, Bulgaria email: neli@bgearn.bitnet D. V. Shiriaev, Karlsruhe email: dima@iamk4058.mathematik.uni-karlsruhe.de I. Dimov, Sofia email: ivdimov@bgearn.bitnet R. B. Kearfott Department of Mathematics University of Southwestern Louisiana U.S.L. Box 4-1010 Lafayette, LA 70504-1010 USA Work phone: (318) 231-5270 Home phone: )318) 981-9744 email: rbk@usl.edu (Internet) Ch. Ullrich, Basel email: ullrich@urz.unibas.ch A. P. Voshinin, Moscow email: apv@mei.msk.su K. Madsen, Lyngby email: numikm@vm.uni-c.dk J. Wolff von Gudenberg, Wuerzburg email: wolff@informatik.uni-wuerzburg.de ------------------------------ From: gerbi@umpa.ens-lyon.fr Date: Tue, 12 Jan 93 17:07:44 MET Subject: Mathematical Circus at ENS-LYON, France LAST ANNOUNCEMENT MATHEMATICAL CIRCUS Location: Ecole Normale Superieure de Lyon, France Dates: February 4-5 1993 " MATHEMATICAL PROBLEMS IN IMAGE PROCESSING " 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, mathematical problems of combustion ... This time the leading speaker is P.-L. LIONS, University of Paris IX-Dauphine. He will give two or three talks covering various aspects of mathematical modelling, nonlinear partial differential equations and their viscous solutions, geometrical interpretation, and finally numerical approximation of these models. He will be surrounded by: G. BARLES: University of Tours, France O. FAUGERAS: INRIA, Sophia-Antipolis, France J.M. MOREL: University of Paris IX-Dauphine, France 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 Thursday morning and will end on Friday noon. For further i 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@umpa.ens-lyon.fr ------------------------------ From: Trini Flores Date: Thu, 14 Jan 93 12:20:05 EST Subject: Simulation and Monte Carlo Methods SIAM Conference on Simulation and Monte Carlo Methods August 4-6, 1993 Cathedral Hill Hotel San Francisco, California DEADLINE FOR SUBMISSION OF ABSTRACTS: FEBRUARY 5, 1993 SIAM is pleased to inform you that the deadline for submission of contributed abstracts has been extended to February 5, 1993. Submissions via e-mail to: meetings@siam.org are welcomed. To help in formatting your submission, plain TeX or LaTeX macros are available. Contact SIAM now. Call 215-382-9800. Fax 215-386-7999. E-Mail: meetings@siam.org ------------------------------ From: Jack Dongarra Date: Sun, 17 Jan 93 12:34:32 -0500 Subject: Parallel Computing Meeting in Obninsk (Russia) GENERAL ANNOUNCEMENT AND CALL FOR PAPERS PARALLEL COMPUTING TECHNOLOGIES PaCT-93 Second International Conference Obninsk (Russia), August 30 - September 3, 1993 Sponsored by ReSCo ReSCo (Recursive Super Computers) is young Russian firm which is specialised in mini super computers In the history of modern Russia PaCT-93 will be the first scientific conference on programming which is sponsored by a commercial firm Supported by the GI/ITG-PARS Computing Center of the Siberian Division of the Russian Academy of Sciences (Novosibirsk) is organizing the Second International Conference PARALLEL COMPUTING TECHNOLOGIES (PaCT-93) to be held in Obninsk (near Moscow), August 30 to September 3, 1993. The last Conference PaCT-91 was held in Novosibirsk. The aim of the Conference is to give an overview of new developments, applications and trends in parallel computing technologies. We sincerely hope that the Conference will help to deepen our understanding of parallel computing technologies by providing a forum for an exchange of views between scientists and specialists from all over the world. We welcome your active participation. MAIN TOPICS . All aspects of the applications of parallel systems . Algorithms for all types of parallel computers . Languages, environments and software tools supporting parallel processing . Operating systems, scheduling, mapping, load balancing . General architecture concepts, enabling technologies . Performance measurement and analysis . Teaching parallel processing. CALL FOR PAPERS Original papers or posters are invited for the Conference. An extended abstract (600 words to 1500 words) should be submitted to the Conference address (see below) before March 30, 1993. Electronic copies in plain ASCII or LaTeX format are preferable. The first page should contain the following information: title, the author's full name, affiliation, a few keywords, address, telephone number, FAX number, e-mail address. It should be indicated whether a paper or poster will be presented. Authors will be notified of acceptance by May 15, 1993. Camera ready copy of the accepted paper (not exceeding 6000 words) will be required by June 20, 1993. We hope all communications will be realized by e_mail. Only the full paper must be sent by express post in camera ready form. TECHNICAL DETAILS Please use plain ASCII or a document preparation system LaTeX for preparing your extended abstract in 'article' style and send LaTeX_text by e-mail in ASCII. For easy printing your abstract with ours equipment use simple LaTeX constructions, please. IMPORTANT DATES Submission of the extended abstracts: March 30, 1993 Notification of acceptance: May 15, 1993 Camera-ready versions of papers: June 20, 1993 PROCEEDINGS The Conference Proceedings will be distributed at the Conference EXHIBITION In addition to the regular sessions there will be an exhibition and presentation of the experimental and commercial hardware and software systems. There also will be an exhibition of current research works. All participants and all Russian and foreign firms or universities are invited to take part in this exhibition. Interested organizations and individuals are requested to contact the PaCT-93 Organizing Committee. ReSCo is going to announce and to exhibit the first version of its new mini super computer MDA (Machine of Dynamic Architecture) LANGUAGE The official language of the Conference is English. SOCIAL ACTIVITIES Cultural program is planned for participants and accompanying persons. Program will include dinner parties, sightseeing tours in and around Obninsk (Malojaroslavets, Tarutino), a visit to the Optina Pustin Monastery and Museums, hunting, etc. PRELIMINARY REGISTRATION Please contact the Organizing committee as soon as possible, preferably by e-mail. C O M M I T T E E S A. Alekseev General Chairman ORGANIZING COMMITTEE V.Malyshkin, chairman V.Anisimov S.Gusev N.Kuchin Ju.Il'ichev S.Pankratov V.Plusnin Ju.Rudnev S.Strachov PROGRAM COMMITTEE V.Malyshkin, co-chairman malysh@comcen.nsk.su N.Mirenkov, co-chairman nikmir@comcen.nsk.su H.Burkhart burkhart@urz.unibas.ch M.Cosnard Michel.Cosnard@lip.ens-lyon.fr J.Dongarra dongarra@cs.utk.edu W.Haendler haendler@informatik.uni-erlangen.de V.Ivannikiv ivan@ivann.delta.msk.su V.Levin levin@kwant.mipt.su R.Maenner maenner@mp-sun1.inf.uni-mannheim.de G.Mauri gmauri@ghost.dsi.unimi.it S.Pankratov,scientific secretary pank@comcen.nsk.su R.Perrott CSG0114@v2.qub.ac.uk C.Polychronopoulos cdp@kpc.com P.Quinton Patrice.Quinton@irisa.fr K.Reinartz reinartz@informatik.uni-erlangen.de H.Zima zima@par.univie.ac.at ------------------------------ From: rsw@hydra.maths.unsw.EDU.AU Date: Tue, 19 Jan 93 09:16:56 +1100 Subject: Parallel Programming Position in Sydney PARALLEL PROGRAMMING CONSULTANT Computing Services Department University of New South Wales Sydney, Australia The University of New South Wales has aqcuired a 32 processor CM5 from Thinking Machines Inc., on behalf of the Sydney Regional Centre for Parallel Computing, formed by the University of New South Wales, University of Sydney, University of Technology Sydney and Macquarie University. A new position has been established at the University of New South Wales to provide general user support for the development and training of applications on the CM5 computer. The principal duties of this position will be to advise staff and graduate students of the University of New South Wales on the efficient use of a 32 processor CM5. She/he will also be required to run short courses introducing users to the architecture, programming environment, including CM Fortran, and optimization of the applications on the CM5. She/he will also assist in the development, maintenance and documentation of applications software. A degree in Computer Science, Mathematics or Engineering, a sound knowledge of structured Fortran programming, several years experience as a Fortran 77 programmer, experience with UNIX operating systems and the ability to communicate with users are all essential. Experience with advanced computer architectures including vector and parallel computers and programming, Fortran 90 array constructs, C programming, scientific visualization and X11 are highly desirable. The successful applicant will report to the Unix Systems Co-ordinator, Systems Software Unit, Computing Services Department and liaise with the Director of the Sydney Regional Centre for Parallel Computing, the University of New South Wales. Appointment will be in the CSO2/CSO3 range depending upon qualifications and experience and for an initial period of three years with good prospects for renewal. Membership of a University approved superannuation scheme is compulsory for new appointees and members of staff appointed after 30 June 1991. Applications close 3 February 1993. Salary: Computing Services Officer Grade 2 $33,383 - $36,856; Computing Services Officer Grade 3 $38,124 - $41,979 per annum depending on qualifications and experience. Further information is available from: Mr. K. Hill, (02) 697 2934, K.Hill@unsw.edu.au or Dr. R. S. Womersley, (02) 697 2998, R.Womersley@unsw.edu.au Written applications, quoting reference number REF. 013, and including the names, addresses and facsimile numbers of at least two referees should be sent to Recruitment Officer, Staff Office, University of New South Wales, P.O. Box 1, Kensington, NSW 2033 AUSTRALIA. ------------------------------ From: Andre Manitius Date: Tue, 12 Jan 93 22:26:58 -0500 Subject: Position at George Mason University DIRECTOR Institute of Computational Sciences and Informatics George Mason University The George Mason University of the Commonwealth of Virginia is seeking candidates for the position of Director of the Institute of Computational Sciences and Informatics (CSI). The Director, who reports to the Provost, is responsible for leadership of the Institute and fulfillment of its research, educational and outreach mission. The Institute's mission includes the development of new approaches to scientific research based on rapidly developing computational methodology, across a broad range of disciplines such as computational physics, mathematics and statistics, space sciences, environmental sciences, global change, the interface of computation and biological science, including bio-informatics, and others. Research in the institute is organized both through multi-disciplinary teams and through disciplinary centers in some of the fields. The Institute is developing and implementing a new Ph.D. program in Computational Science with current enrollment of 68 students and with an anticipated steady enrollment of 150 students. Institute's current computational facilities include a network of workstations, and servers, with a possible addition of a highly parallel machine. A significant emphasis in the Institute' mission is given to the interaction with local high-technology industry and government laboratories in the Washington Metropolitan area. The successful candidate should be a recognized researcher in a field with significant computational component, with a strong record of individual research and scholarship. The candidate should have demonstrated the ability to provide leadership and management of research teams, and should have experience with a variety of research funding sources. The ability of fostering interactions with high technology industry and laboratories, and the ability to provide leadership to an interdisciplinary doctoral program will be essential. Those wishing to be considered for the position or wanting to nominate a candidate should write to: Chair, CSI Director Search Committee Office of the Provost George Mason University 4400 University Drive Fairfax VA 22030 email: csi@gmuvax.gmu.edu Applications should include a letter, a curriculum vitae, and the names of at least three references. Review of the applications will begin on February 1, 1993, and the position is expected to be available July 1, 1993. Women and minorities are encouraged to apply. George Mason University, a State University of Northern Virginia, is an affirmative action/equal opportunity employer. (for more information contact csi@gmuvax.gmu.edu). ------------------------------ From: Murli M Gupta Date: Mon, 11 Jan 93 15:16:18 EDT Subject: Graduate Program at George Washington University Dear Colleague: I am writing to you on behalf of our Department to ask for your assistance in reaching potential graduate students. The information below gives a brief description of our Graduate Program, to which I would like to add a few words. Although our Department is small it provides many of the amenities of a larger department. We offer a full range of graduate courses leading to the Master's and Ph.D. degrees in pure and applied mathematics. Our faculty's research interests are varied, providing a good choice of dissertation topics. We have a state of the art Sun computer network, a first class mathematics collection in the University library, and a stimulating series of colloquia and seminars. Students who pursue graduate work in our department will find an environment which offers the kind of individual attention not often found in larger departments. Each entering student is assigned a faculty member to serve as mentor during the first few years preceding the selection of a dissertation advisor. The mentor and the student meet on a regular basis to discuss the student's experiences and progress in the program. Our graduate program has a long history of producing Ph.D. and Master's graduates who have gone on to successful careers. Recently, the University has awarded us additional Graduate Teaching Assistantships, which will effectively double the size of our graduate program. We are now actively seeking good students to fill these new positions. The Teaching Assistantship package includes full tuition credits, a stipend, and additional support in exchange for certain teaching duties, including teaching recitations and working in our `Math Lab'. Interested graduate students often have the opportunity to teach summer school. We hope that you will mention our graduate program to promising students who are considering graduate work in mathematics. The next application deadline is February 15, 1993. Please call or write to us if we can answer any questions about graduate study at The George Washington University. Should you or your students have the opportunity to visit our Department, we would be delighted to welcome you. Sincerely yours, Murli M. Gupta (202) 994-4857 mmg@math.gwu.edu To contact the department: The Department of Mathematics George Washington University Washington, DC 20052 (202) 994-6235 study@math.gwu.edu ============ Excerpts from our brochure: Programs of Study: The Department of Mathematics offers programs of advanced study and research leading to the degrees of Master of Arts, Master of Science and Doctor of Philosophy. Research Facilities: The George Washington University Library collection, which includes over 200 mathematics-related journals, is excellent for advanced study and research. Other mathematical research libraries in the area are also available to students. Students have access to the Department's computing system consisting of 3 Sun SPARCstation 1+ machines, PC's linked to the Suns, and state of the art mathematical research software. Access to computer systems outside the Department is available via edunet. The University has a modern computing center, including classrooms equipped with microcomputers. The Area: The University is located in the District of Columbia, four blocks west of the White House. Its proximity to numerous research laboratories, government agencies, and national museums offers students a variety of educational, professional, and cultural opportunities. Financial Aid: Graduate study in mathematics is supported by teaching assistantships and University fellowships. Applicants interested in financial aid are encouraged to apply early. For interested mathematics graduate students, the research laboratories and companies located in the Washington metropolitan area offer excellent job opportunities. ------------------------------ From: SIAM Date: Fri, 15 Jan 93 10:34:24 EST Subject: Contents, SIAM Control and Optimization Table of Contents SIAM Journal on Control and Optimization Vol. 31, No. 2, May 1993 Infinite-Dimensional Volterra--Stieltjes Evolution Equations and Related Optimal Control Problems Jiongmin Yong Lipschitzian Stability in Nonlinear Control and Optimization Asen L. Dontchev and William W. Hager Pursuit--Evasion Problems and Viscosity Solutions of Isaacs Equations Pierpaolo Soravia An Optimal Control Problem with a Mixed Cost Function V. I. Korobov, V. I. Krutin, and G. M. Sklyar Optimality Conditions via Norm Scalarization in Vector Optimization Phan Quoc Khanh Controllability and Stabilizability of the Third-Order Linear Dispersion Equation of a Periodic Domain D. L. Russell and B. Y. Zhang Dynamic Optimization Problems with Free-Time and Active State Constraints J. D. L. Rowland and R. B. Vinter Optimization of Queues Using an Infinitesimal Perturbation Analysis-Based Stochastic Algorithm with General Update Times Edwin P. Chong and Peter J. Ramadge A Set Induced Norm Approach to the Robust Control of Constrained Systems Mario Sznaier The Four Block Model Matching Problem in l1 and Infinite-Dimensional Linear Programming Olof J. Staffans Control of Planar Netowrks of Timoshenko Beams J. E. Lagnese, G. Leugering, and E. J. P. G. Schmidt ------------------------------ End of NA Digest ************************** -------