simulation@uflorida.cis.ufl.edu (Moderator: Paul Fishwick) (08/30/90)
Volume: 17, Issue: 5, Wed Aug 29 15:35:33 EDT 1990 +----------------+ | TODAY'S TOPICS | +----------------+ (1) RE: Integration Methods (2) Experience with DEMOS (3) CALL: Simulation of Behavior (4) CALL: Summer Simulation Conference (SCS) (5) CALL: Simulation of Multiple-Processor Networks * Moderator: Paul Fishwick, Univ. of Florida * Send topical mail to: simulation@bikini.cis.ufl.edu OR post to comp.simulation via USENET * Archives available via FTP to bikini.cis.ufl.edu (128.227.224.1). Login as 'ftp', use your last name as the password, change directory to pub/simdigest. Do 'type binary' before any file xfers. * Simulation Tools available by doing above and changing the directory to pub/simdigest/tools. ----------------------------------------------------------------------------- Date: Thu, 23 Aug 90 08:34:48 -0400 From: steve@hubcap.clemson.edu ("Steve" Stevenson) To: simulation@bikini.cis.ufl.edu Subject: Re: Continuous System Simulation Newsgroups: comp.simulation References: <24172@uflorida.cis.ufl.EDU> In comp.simulation you write: > My question is this: are common integration methods (like >2nd order Runge-Kutta) numerically stable in this sort of >situation? My guess is that they are not, because the size >of delta_x is not fixed and is hard to predict. Thus the >method might, for example, step over a singularity in the y >trajectory and miss it. > Since I think this answer is probably correct, my *real* >question is: are there any methods which don't have this >problem? Or more generally, how do people manage to simulate >autonomous continuous systems defined by differential equations? There are lots of problems with fixed integration methods (having only one) in a general purpose simulation system. The basic problem is that different systems have different *mathematical* characteristics and hence need different numerical techniques. These techniques may be sensitive to parameters determined at run time. As to what kinds of algorithms there are, a good book in Numerical Solutions written recently should help. For example, there are fixed and adaptive time steps, implicit-explicit, etc. BTW, you probably want Runge-Kutta-Fehlberg not just RK. ------------------------------ To: Paul Fishwick <fishwick@fish.cis.ufl.edu> Subject: Re: Looking for DEMOS In-Reply-To: Your message of Wed, 22 Aug 90 16:56:13 -0400. <9008222056.AA03221@fish.cis.ufl.edu> Date: Thu, 23 Aug 90 09:27:29 -0400 From: Isidro Castineyra <isidro@BBN.COM> I am interested in finding out more about DEMOS - has anyone here had any experience with this package? DEMOS is a simulation context built over the "simulation" class of SIMULA. It is described in "Discrete Event Modelling on Simula" by G. M. Birtwistle (Springer-Verlag New York Inc. 1987, QA76.73.S55B57, ISBN 0-387-91301-7). A description also appears in "System Simulation, Programming Styles and Languages", by Wolfgang Kreutzer. My group has used SIMULA before, but it will be the first time for me. What I have read of DEMOS makes me think that I could get things done sooner with it. Thanks for your help. Isidro Castineyra <isidro@bbn.com> | phone: (617) 873-6233 ------------------------------ From: B M Smith <bms@dcs.leeds.ac.uk> Date: Fri, 24 Aug 90 13:48:37 BST To: simulation@ufl.edu Subject: Item for Distribution FINAL CALL FOR PAPERS AISB'91 8th SSAISB CONFERENCE ON ARTIFICIAL INTELLIGENCE University of Leeds, UK 16-19 April, 1991 The Society for the Study of Artificial Intelligence and Simulation of Behaviour (SSAISB) will hold its eighth biennial conference at Bodington Hall, University of Leeds, from 16 to 19 April 1991. There will be a Tutorial Programme on 16 April followed by the full Technical Programme. The Programme Chair will be Luc Steels (AI Lab, Vrije Universiteit Brussel). Scope: Papers are sought in all areas of Artificial Intelligence and Simulation of Behaviour, but especially on the following AISB91 special themes: * Emergent functionality in autonomous agents * Neural networks and self-organisation * Constraint logic programming * Knowledge level expert systems research Papers may describe theoretical or practical work but should make a significant and original contribution to knowledge about the field of Artificial Intelligence. A prize of 500 pounds for the best paper has been offered by British Telecom Computing (Advanced Technology Group). It is expected that the proceedings will be published as a book. Submission: All submissions should be in hardcopy in letter quality print and should be written in 12 point or pica typewriter face on A4 or 8.5" x 11" paper, and should be no longer than 10 sides, single-spaced. Each paper should contain an abstract of not more than 200 words and a list of up to four keywords or phrases describing the content of the paper. Five copies should be submitted. Papers must be written in English. Authors should give an electronic mail address where possible. Submission of a paper implies that all authors have obtained all necessary clearances from the institution and that an author will attend the conference to present the paper if it is accepted. Papers should describe work that will be unpublished on the date of the conference. Dates: Deadline for Submission: 1 October 1990 Notification of Acceptance: 7 December 1990 Deadline for camera ready copy: 16 January 1991 Location: Bodington Hall is on the edge of Leeds, in 14 acres of private grounds. The city of Leeds is two and a half hours by rail from London, and there are frequent flights to Leeds/Bradford Airport from London Heathrow, Amsterdam and Paris. The Yorkshire Dales National Park is close by, and the historic city of York is only 30 minutes away by rail. Information: Papers and all queries regarding the programme should be sent to Judith Dennison. All other correspondence and queries regarding the conference to the Local Organiser, Barbara Smith. Ms. Judith Dennison Dr. Barbara Smith Cognitive Sciences Division of AI University of Sussex School of Computer Studies Falmer University of Leeds Brighton BN1 9QN Leeds LS2 9JT UK UK Tel: (+44) 273 678379 Tel: (+44) 532 334627 Email: judithd@cogs.sussex.ac.uk FAX: (+44) 532 335468 Email: aisb91@ai.leeds.ac.uk ------------------------------ Date: Fri, 24 Aug 90 17:17:50 EDT From: tla@bartok.att.com (Terry L Anderson) To: simulation@bikini.cis.ufl.edu Subject: submission for digest ___________________________ Call for Papers ____________________________ Enhancing Simulation Utility 1991 Summer Computer Simulation Conference (SCSC 91) Hyatt Regency Hotel (Inner Harbor), Baltimore, Maryland July 22-24, 1991 _____________________________ The Program ______________________________ The 1991 Summer Computer simulation Conference (SCSC 91) will feature innovative presentations, panel discussions, state-of-the-art reviews, tutorials, and trade show exhibits designed to provide comprehensive coverage of the field of computer simulation. The spectrum of topics for SCSC 91 will include: + Simulation Methodologies + Computer Performance & Advanced Processing + Intelligent Simulation Environments + AI/KBS in Simulation + Robotics & CAD/CAE/CAM + Simulators & Simulation Use in Training + Government, Management, & Social Sciences + Physical/Chemical/Engineering Applications + Biomedical Sciences + Communications & Radar Systems + Undersea Systems + Missile Systems + Strategic Defense Initiative (SDI) Applications + Aerospace Simulations + Frontiers of Simulation in Asia ____________________ Paper Submissions & Proposals _____________________ Only original papers which have not been previously published should be submitted. Authors will be expected to register early (at a reduced fee) and to attend the conference at their own expense to present accepted papers. When submitting material, include full names, affiliations, addresses, and phone numbers (and FAX numbers when available) for every participant. Extended abstracts and proposals for tutorials or panel sessions should be mailed to: Dr. Dale K. Pace Johns Hopkins University Applied Physics Laboratory Johns Hopkins Road Laurel, Maryland 20723-6099 USA Phone: (301) 953-5650 FAX: (301) 953-5910 _________________________ Deadlines and Dates __________________________ Abstract & Proposals Nov 15, 1990 Acceptance Notification Jan 15, 1991 Camera Ready Papers Due Mar 15, 1991 SCSC 91 Jul 22-24, 1991 __________________________ SCSC 91 Committee ___________________________ General Co-Chairs: Mr Richard J. Hunt (Johns Hopkins Univ Applied Physics Laboratory) Dr Iwao (Pete) Sugai (Soviet Electronics Digest Dissemination Service) Program Chair: Dr Dale K. Pace (Johns Hopkins Univ Applied Physics Laboratory) Associate Program Chair: Mr Dennis Baker (Martin Marietta Aero & Naval Systems) Local Arrangements/Exhibits Co-Chairs: Mr William E. Buchanan (Johns Hopkins Univ Applied Physics Laboratory) Mrs M. Connie Finney (Johns Hopkins Univ Applied Physics Laboratory) Budget Chair: Mr Paul F. Bohn (Johns Hopkins Univ Applied Physics Laboratory) _____________________________ Sponsored by _____________________________ The Society for Computer Simulation PO Box 17900, San Diego, CA 92117 Phone: (619) 277-3888, FAX: (619) 277-3930 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ________________________________________________________________________ Special Call for Papers on Computer Performance & Advanced Processing ________________________________________________________________________ As chairman of the group on Computer Performance & Advanced Processing at SCSC 91, I would like to offer a special invitation for papers in this area. Example topics include: + Performance models of computer hardware + Performance models of computer software systems + Simulation languages, tools, and techniques for performance modeling of computers software and hardware systems + Role of performance modeling in software development and software engineering + Advanced information processing techniques applied to simulation, such as: - neural networks - parallel processors - object orientation - AI, expert systems and knowledge-based systems If you would like to discuss possible paper topics or ideas for panels in this area, you may contact me Dr Terry L Anderson AT&T Bell Laboratories 4N-E01 184 Liberty Corner Rd Warren, NJ 07059 Phone: (201) 580-4428 FAX: (201) 580-5631 Email: tla@bartok.att.com ATTMAIL: mozart!tla or in Europe, you may contact the group co-chair Dr Eugene J. H. Kerckhoffs Faculty of Applied Mathematics & Information Delft University of Technology Julianalaan 132, 2628 BL Delft The Netherlands Phone: (015) 78 13 15 FAX: (015) 78 70 22 ________________________________________________________________________ ------------------------------ Date: Mon, 27 Aug 90 11:34:43 -0400 From: "Paul Fishwick" <fishwick@fish.cis.ufl.edu> To: simulation@ufl.edu >From kkb@iesd.auc.dk Sat Jul 21 05:27:09 1990 (5.61++/IDA-1.2.8) id AA22415; Fri, 20 Jul 90 16:04:38 +0200 Date: Fri, 20 Jul 90 16:04:38 +0200 From: Kallol Kumar Bagchi <kkb@iesd.auc.dk> To: fishwick@fish.cis.ufl.edu ************ CALL FOR PAPERS ************ INTERNATIONAL JOURNAL OF COMPUTER SIMULATION IS ANNOUNCING A SPECIAL ISSUE SCHEDULED FOR EARLY 1991 ON SIMULATION OF MULTIPLE PROCESSOR NETWORKS ________________________________________________________________________________ PAPERS ON SIMULATION OF SYSTEMS RANGING FROM TIGHTLY-COUPLED MULTIPROCESSORS TO NETWORKS AND DISTRIBUTED SYSTEMS ARE INVITED. ALL ASPECTS OF SUCH SIMULATION WILL BE OF INTEREST. SPECIFIC TOPICS OF INTEREST INCLUDE, BUT ARE NOT LIMITED TO : O MODELING AND SIMULATION TECHNIQUES OF SUCH SIMULATION O PERFORMANCE EVALUATION STUDIES O VALIDATION AND VERIFICATION O DESIGN METHODS O LANGUAGES/PROGRAMMING CONSTRUCTS FOR SUCH SIMULATION O DESCRIPTION OF SIMULATORS OF SUCH SYSTEMS O COMPARATIVE STUDIES ON UNIPROCESSOR/MULTIPROCESSOR HOSTS FOR SUCH SIMULATION ________________________________________________________________________________ PROSPECTIVE AUTHORS ARE INVITED TO SUBMIT FOUR COPIES OF COMPLETE MANUSCRIPT OF HIGH QUALITY OF RESEARCH CONTRIBUTIONS THAT WOULD NOT REQUIRE MAJOR REVISION BY October 30, 1990 TO THE GUEST EDITOR : DR. KALLOL BAGCHI, GUEST EDITOR DR. GEORGE W. ZOBRIST, EDITOR INSTITUTE OF ELECTRONIC SYSTEMS DEPARTMENT OF COMPUTER SCIENCE AALBORG UNIVERSITY UNIVERSITY OF MISSOURI-ROLLA FREDRICK BAJERS VEJ 7 ROLLA, MISSOURI 65401 DK 9220 AALBORG, DENMARK U.S.A. PHONE: (45) 98 15 85 22 PHONE: (314) 341-4836 EMAIL: KKB@IESD.AUC.DK EMAIL: C2816@UMRVMB.UMR.EDU ________________________________________________________________________________ PUBLISHER: ABLEX PUBLISHING CORPORATION 355 CHESTNUT STREET NORWOOD, NEW JERSEY 07648, U.S.A. ================================================================================ ------------------------------ END OF SIMULATION DIGEST ************************