From NA-Request@Score.Stanford.EDU Sat Feb 14 03:17:19 1987 Return-Path: Received: from anl-mcs.ARPA by dasher.sun.com (3.2/SMI-3.2) id AA15131; Sat, 14 Feb 87 03:17:12 CST Received: from Score.Stanford.EDU (score.stanford.edu.ARPA) by anl-mcs.ARPA (4.12/4.9) id AA23856; Sat, 14 Feb 87 03:17:41 cst Message-Id: <8702140917.AA23856@anl-mcs.ARPA> Date: Fri 13 Feb 87 20:20:48 PST Subject: NA Digest V87 #2 From: NA Digest Errors-To: NA-request@Score.Stanford.EDU Maint-Path: NA-request@Score.Stanford.EDU To: NA.Distribution.List:;@anl-mcs.ARPA Reply-To: NA@Score.Stanford.edu Status: R NA Digest Friday, February 13, 1987 Volume 87 : Issue 2 This weeks Editor: Gene Golub Today's Topics: na.lastname status message II Mathematics Editors sabbatical planning Office phone notice of NATO ASI At last Lectureship at Bath Public Domian Macsyma SHARE classification Temporary Address ---------------------------------------------------------------------- Date: Mon, 2 Feb 87 16:14:44 PST From: Mark Kent Subject: na.lastname status message II To: na@score.stanford.edu (These messages will not become a regular thing.) Two new improvements have been installed that should improve reliability. 1) In the past the na.lastname messages were shipped out of Stanford from a Vax called Navajo. Quite a few messages were going nowhere because Navajo had trouble either opening connections with hosts or maintaining a connection long enough to get the mail through. This is probably caused by increased arpanet traffic and lack of flexibility in certain parameters in the mail system. I have noticed that other Unix systems have encountered the same problem recently. Score, a Dec-20, has better luck with out-going messages. Maybe this is because Score has a direct arpanet connection. Now, all NAnet messages (both broadcast and individual) go through Score. (Score also seems more forgiving with addresses.) 2) Previously, messages were shipped out as if the sender was daemon@navajo. This caused some troubles as people could not conveniently use the "reply" command to such messages. Also, messages sent to na.netlib@score.stanford.edu would seem to get no reply. As it turns out, the mailbox for daemon@navajo was collecting replies from netlib. The daemon was also collecting mail errors for things further down the line. So if you sent a message to na.xxxx and the corresponding address was unreachable for 5 days then you would never know it. This has been fixed. You should now get error messages as if you had typed the real address rather than the na.lastname address. Hence, if some host is down and your message cannot get through then you will know it. Unfortunately, while I was installing these changes the database for the na.lastname facility was somehow garbled. In fact it was empty. So some of you may have got messages like "na.someone not recognized" The database has been fixed and everything should work from now on. -mark ------------------------------ From: wmgentleman%watbun%math%math.waterloo.edu@RELAY.CS.NET To: na.dis@SU-SCORE.ARPA Date: Sun, 1 Feb 87 23:46:01 EST Subject: Mathematics Editors When I gave my talk "Impact of Microprocessors in Numerical Computation" at the SIAM Seattle meeting in 1984, the last point I made was that perhaps the most important thing microcomputers would eventually be seen to have contributed to numerical analysts and other mathematicians would be the ability to write mathematical notation directly to a screen, giving the same advantages of "electric paper" that word processing brought to composing ordinary text documents. I would like to rave about a program that I have been using the last couple of weeks with my Macintosh that, though it isn't quite all the way to what I had in mind, is a quantum leap beyond anything else I have seen. The program, Mathwrite, by Cooke Publications in Ithaca, NY, has been advertised in the last couple of issues of MacWorld. It is a full screen WYSIWYG editor for mathematics, that is, the expressions on the screen look just like those printed on the pages of textbooks or journals, with Greek and other symbols, point size differences, etc. There are two aspects that are important to something like this: first, is it rich enough to represent all, or at least the vast majority of the notation you would like to use, and second, can it do this easily enough that there is some hope you might actually derive the mathematics on the screen, and not just transcribe into a typesetting system formulae and equations that you derived the old-fashioned way on paper. The answer, for me, to the first aspect is yes, this program could represent not just any formula I have ever included in a paper I published, but any formula I have ever written in my private notes when deriving results. For the second aspect, the answer is that it is close but not there. I find it very easy to enter expressions - while teaching myself the program I did the last five examples, which include messy integral, matrix, and partial derivative expressions, in less than 45 minutes. I even found typos in the originals while doing it. Altogether as big an advance over document compilers like eqn and tex as they are over typeballs and lectraset. However I found that editing expressions that already have been entered still leaves much to be desired. ------------------------------ Date: Wed, 04 Feb 87 10:27:20 cet To: NA@SU-SCORE.ARPA From: AIHDM@ASUACAD.BITNET Subject: sabbatical planning an experienced numerical analyst from germany would like to spend a sabbatical leave in the u.s. preferably not in a university environment but in a research lab in industry (although the first is possible). times are march-september 1988 or august 88 - february 1989. he looks for a contract that requires him to work full-time equivalent but the pay has to be limited. he has extensive (consulting) experience, areas include 1. stiff ode's, 2. formula manipulation, 3. ill-posed problems, 4. fast elliptic solvers, 5. parallel algorithms applied to 3. and 4.. if you can suggest places to contact i will forward this information to him. hans mittelmann, arizona state university, dept. math., tempe, az 85287. ------------------------------ Mail-From: GOLUB created at 4-Feb-87 14:50:21 Date: Wed, 4 Feb 87 14:47:13 CST To: From: ReSent-Date: Wed 4 Feb 87 14:50:20-PST ReSent-From: Gene H. Golub ReSent-To: na@Score.Stanford.EDU SUBJECT : INQUIRY FROM : V.A.SPOSITO (SL.VAS@ISUMVS) WHO CAN GIVE ME INFORMATION REGARDING (ALL) AVAILABLE SOFTWARE (PUBLIC,PURCHASE OR LEASE) FOR SOLVING LARGE-SCALE LINEAR PROGRAMMING PROBLEMS; ALSO FOR NONLINEAR PROGRAMMING PROBLEMS ? INFORMATION REGARDING ANY VECTORIZED VERSIONS OF THESE SOFTWARE PACKAGES WOULD ALSO BE APPRECIATED. V.A.SPOSITO, DEPT. STATISTICS.,IOWA STATE UNIV., AMES, IOWA 50011 ------------------------------ Date: Wed, 4 Feb 87 13:20:21 EST From: pitt45!wcr%pitt@csnet-relay%pitt To: NA@SU-SCORE.ARPA Subject: Office phone The phone system on our campus has been changed. From now on my office phone number is (412)-624-8381 Werner Rheinboldt University of Pittsburgh ------------------------------ Date: Thu, 5 Feb 87 08:23:44 CST To: From: WHO IS JIM GENTLE? BEEN TRYING TO CONTACT YOU VIA THIS NETWORK. SEND ME YOUR PASSWORD. VINCE (SL.VAS@ISUMVS.BITNET) ------------------------------ Date: Thu, 5 Feb 87 08:25:12 CST To: From: WHO IS MIKE HAND? BEEN TRYING TO CONTACT YOU VIA THIS NETWORK. SEND ME YOUR PASSWORD. VINCE (SL.VAS@ISUMVS.BITNET) ------------------------------ Mail-From: GOLUB created at 5-Feb-87 10:08:15 Date: Thu, 5 Feb 87 09:28:52 CST From: wmiller@umn-cs (Dr. Willard Miller) To: golub@score.stanford.edu ReSent-Date: Thu 5 Feb 87 10:08:14-PST ReSent-From: Gene H. Golub ReSent-To: na@Score.Stanford.EDU INSTITUTE FOR MATHEMATICS AND ITS APPLICATIONS UNIVERSITY OF MINNESOTA 514 Vincent Hall 206 Church Street S.E. Minneapolis, Minnesota 55455 (612)624-6066 WORKSHOP ON CONSTITUTIVE EQUATIONS AND MODELING OF DISTRIBUTED CRACKING, STRAIN SOFTENING, AND LOCALIZATION February 16-18, 1987 This workshop is made possible by grants from the Army Research Office and the National Science Foundation Tentative Program Monday, Feb 16 : 8:30 - 9:30 am Z.P. Bazant "Problems and Recent Advances in Continuum Northwestern Univ. Modelling of Softening Damage" 9:30 - 10:15 am I. Vardoulakis "Experimental Observations with Respect Univ. of Minnesota to Strain-Softening and Localization in Granular Media" 10:30 - 11:30 am Discussion 1:00 - 1:45 pm J.D. Dougill "A Distributed Damage Model and Some Imperial College Possible Extensions" 1:45 - 2:30 pm K. William "Stabilization and Control of Associated Univ. of Colorado and Non-Associated Strain-Softening Computations" 2:30 - 3:15 pm J.H. Prevost "Constitutive Equations for Soil" Princeton Univ. 3:30 - 5:00 pm Discussion Tuesday, Feb 17 : 8:30 - 9:15 am A. Needleman "Finite Element Analysis of Failure Brown Univ. Modes in Ductile Solids" 9:15 - 10:05 am M.A. Crisfield "Some Experiences with Finite Element Transport & Road Analyses of Softening Materials" Research Lab 10:30 - 11:30 am Discussion 1:00 - 1:45 pm R. de Borst "Computational Issues Regarding the Univ. of New Mexico Solution of Boundary Value Problems with an Indefinite Stiffness Matrix" 1:45 - 2:30 pm M. Ortiz "Finite Element Analysis of Brown Univ. Localized Failure" 3:00 - 4:30 pm Discussion Wednesday, Feb 18: 8:30 - 9:15 am H.L. Schreyer "Mathematical Formulation and Univ.ofNewMexico Problems Associated with Strain- Softening and Localization Based on Nonlocal Plasticity" 9:15 - 10:00 am R.D. James "Prediction of the Microstructures Univ.ofMinnesota of Solids which Arise from a Phase Transformation" 10:30 - 11:30 Discussion 1:00 - 1:45 M. Shearer "Conservation Laws of Mixed Type North Carolina State Arising in Elasticity and Porous University Media Flow" 1:45 - 2:30 pm E. Aifantis "Plastic Heterogeneity: Instabilities, Mich. Tech. Univ. Dislocations, and Deformation Bands" 3:00 - 4:30 pm Discussion ------------------------------ Date: Thu, 5 Feb 87 14:42:47 pst From: Alan J. Laub Posted-Date: Thu, 5 Feb 87 14:42:47 pst To: na@SCORE.STANFORD.EDU Subject: notice of NATO ASI NATO ADVANCED STUDY INSTITUTE (ASI) "THE APPLICATION OF ADVANCED COMPUTING CONCEPTS AND TECHNIQUES IN CONTROL ENGINEERING" SEPTEMBER 14-25, 1987 IL CIOCCO, TUSCANY, ITALY AIM: This ASI is intended to bring together both academic and industrial control systems engineers who are active or who wish to become active in the application of advanced computing concepts and techniques in the design and imple- mentation of control systems. The main areas to be covered in the Institute lie at the interface between computer sci- ence and control and include: * expert systems in design and implementation of control systems * control of distributed and discrete event processes * parallel computing algorithms and architectures for control and signal processing A series of tutorial-level lectures will be presented by invited lecturers in each of these main areas while a few research-level contributions will be presented as short papers by selected participants. MAIN LECTURERS: The main lecturers for the Institute will include: K.J. Astrom (Lund), G. Blankenship (Maryland), G. Cybenko (Tufts), M.J. Denham (Kingston Polytechnic), A.J. Laub (UC Santa Barbara), E.H. Mamdani (Queen Mary College), J.P. Quadrat (INRIA), A.H. Sameh (Illinois), P. VanDooren (Philips), and W.M. Wonham (Toronto) FEES: The attendance fee of $600 includes accommodation and all meals for the duration of the Institute (13 nights) and transportation to and from Pisa airport. DIRECTORS: The co-directors of the Institute are: Professor Michael J. Denham Professor Alan J. Laub Kingston Polytechnic Dep't. of Electrical and Kingston upon Thames Computer Engineering KT1 2EE University of California England Santa Barbara, CA 93106 Tel. (44) (1) 549-1366 Tel. (1) (805) 961-3616 APPLICATIONS: Attendance is by personal invitation only. Further details and application forms are obtainable from the above. Please note that Professor Denham will be at the Santa Barbara address until Apr. 1, 1987. To ensure full consideration by the organizing committee, applications should be submitted by May 15, 1987 at the latest. ------------------------------ Mail-From: GOLUB created at 6-Feb-87 08:05:21 Date: Fri 6 Feb 87 08:05:21-PST From: Gene H. Golub Subject: At last To: NA@Score.Stanford.EDU At last, you can send msgs to John Butcher in New Zealand. He has about the longest address known to man! But you can avoid his complicated address by sending to na.butcher@stanford.score.edu. Welcome to the WORLD, John. Gene ------------------------------ Date: 2 Feb 1987 13:15:09 GMT To: NA <@Cs.Ucl.AC.UK:NA@score.stanford.edu> Subject: Lectureship at Bath From: Alastair Spence UNIVERSITY OF BATH,U.K. SCHOOL OF MATHEMATICAL SCIENCES LECTURER IN APPLIED MATHEMATICS Applications are invited for the above post in the Mathematics group of the School of Mathematical Sciences, which is tenable from 1st. September 1987. The successful candidate will be expected to have interests which are compatible in broad terms with existing research activities in continuum mechanics, which relate mainly to solid mechanics and aspects of wave propagation, though expertise in mechanics of suspensions or the numerical solution of partial differential equations would be welcome. Duties will include teaching to students within the School of Mathematical Sciences and in other Schools where a substantial service teaching commitment exists. Particular emphasis will be placed however on the successful candidate's achievements and potential in research. Salary in the range 8,020 - 15,700 UK pounds. All lectureships are subject to a probationary period of three years. Closing date : 25th. February 1987. Further particulars from: Professor J R Willis, School of Mathematical Sciences, University of Bath, BATH, BA2 7AY U.K. UK Telephone: 0225 826184 (School Office) 0225 826241 (Professor Willis) or Alastair Spence on NANET: na.spence@su-score ------------------------------ Date: Fri, 06 Feb 87 15:16 EST From: AUGENBAU@UCONNVM Subject: Public Domian Macsyma To: NA.DIS@SU-SCORE.ARPA I have been told that there is a DOE public domain version of Maacsyma around. I would appreciate if anyone could give some information on this. reply to: augenbau@uconnvm.bitnet or na.augenbaum@su-score.arpa ------------------------------ Date: Fri, 6 Feb 87 14:55:29 CST From: wmiller@umn-cs.arpa (Dr. Willard Miller) To: na@score.stanford.edu INSTITUTE FOR MATHEMATICS AND ITS APPLICATIONS UNIVERSITY OF MINNESOTA 514 Vincent Hall 206 Church Street S.E. Minneapolis, Minnesota 55455 (612)624-6066 WORKSHOP ON CONSTITUTIVE EQUATIONS AND MODELING OF DISTRIBUTED CRACKING, STRAIN SOFTENING, AND LOCALIZATION February 16-18, 1987 This workshop is made possible by grants from the Army Research Office and the National Science Foundation Tentative Program Monday, Feb 16 : 8:30 - 9:30 am Z.P. Bazant "Problems and Recent Advances in Continuum Northwestern Univ. Modelling of Softening Damage" 9:30 - 10:15 am I. Vardoulakis "Experimental Observations with Respect Univ. of Minnesota to Strain-Softening and Localization in Granular Media" 10:30 - 11:30 am Discussion 1:00 - 1:45 pm J.D. Dougill "A Distributed Damage Model and Some Imperial College Possible Extensions" 1:45 - 2:30 pm K. William "Stabilization and Control of Associated Univ. of Colorado and Non-Associated Strain-Softening Computations" 2:30 - 3:15 pm J.H. Prevost "Constitutive Equations for Soil" Princeton Univ. 3:30 - 5:00 pm Discussion Tuesday, Feb 17 : 8:30 - 9:15 am A. Needleman "Finite Element Analysis of Failure Brown Univ. Modes in Ductile Solids" 9:15 - 10:05 am M.A. Crisfield "Some Experiences with Finite Element Transport & Road Analyses of Softening Materials" Research Lab 10:30 - 11:30 am Discussion 1:00 - 1:45 pm R. de Borst "Computational Issues Regarding the Univ. of New Mexico Solution of Boundary Value Problems with an Indefinite Stiffness Matrix" 1:45 - 2:30 pm M. Ortiz "Finite Element Analysis of Brown Univ. Localized Failure" 3:00 - 4:30 pm Discussion Wednesday, Feb 18: 8:30 - 9:15 am H.L. Schreyer "Mathematical Formulation and Univ.ofNewMexico Problems Associated with Strain- Softening and Localization Based on Nonlocal Plasticity" 9:15 - 10:00 am R.D. James "Prediction of the Microstructures Univ.ofMinnesota of Solids which Arise from a Phase Transformation" 10:30 - 11:30 Discussion 1:00 - 1:45 M. Shearer "Conservation Laws of Mixed Type North Carolina State Arising in Elasticity and Porous University Media Flow" 1:45 - 2:30 pm E. Aifantis "Plastic Heterogeneity: Instabilities, Mich. Tech. Univ. Dislocations, and Deformation Bands" 3:00 - 4:30 pm Discussion ------------------------------ Date: Wed, 4 Feb 87 16:49:20 GMT From: trh%ukc.ac.uk@Cs.Ucl.AC.UK To: na.dis@score.stanford.edu Subject: SHARE classification Can anyone give me a reference to the original source of the Modified SHARE Classification Index (or why linear equation algorithms appearing in TOMS are tagged F04)? I seem to remember hearing that George Forsythe was responsible but I can't find anything in print. Thanks in advance, -- Tim Hopkins, Computing Laboratory, University of Kent, Canterbury CT2 7NF Kent U.K. { trh@ukc.UUCP trh%ukc@ucl-cs.ARPA na.hopkins@su-score.ARPA } ------------------------------ Date: Mon, 9 Feb 87 15:13:37 EST From: luk@think.com (frank luk) To: na.dis@score.stanford.edu Subject: Temporary Address I am spending the spring semester at the Thinking Machines Corp. My address and phone are Thinking Machines Corp. 245 First Street Cambridge, MA 02142-1214 617-876-1111 luk@think.com Frank Luk ------------------------------ End of NA Digest ************************** -------