simulation@uflorida.cis.ufl.edu (Moderator: Paul Fishwick) (04/24/91)
Volume: 21, Issue: 6, Tue Apr 23 22:03:08 EDT 1991 +----------------+ | TODAY'S TOPICS | +----------------+ (1) WANTED: Motorola 6805 Emulator/Simulator (2) Double Pendulum Revisited (3) WANTED: Flight Simulation References (4) CALL: Dynamic Modeling of Information Systems (5) Biological Modeling and Simulation * 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. ----------------------------------------------------------------------------- To: comp-simulation@uunet.UU.NET Path: diemen!tasman!hill From: hill@tasman.cc.utas.edu.au (Kym Maxwell Hill) Newsgroups: comp.simulation Subject: 6805 emulator Summary: Request for motorola 6805 emulator for Mac or PC Date: 17 Apr 91 05:02:36 GMT Sender: news@diemen.utas.edu.au Distribution: comp Does anyone know about or have an emulator that will run motorola 6805 code on a PC or Mac. Thanks in advance. hill@hilbert.maths.utas.edu.au ------------------------------ Date: Thu, 18 Apr 1991 09:54 +8:00 From: "puchm@cutmcvax.cutmcvax.cs.curtin.edu.au"@cc.curtin.edu.au Subject: double pendulum.. revisited.... To: comp-simulation@munnari.oz.au X-Envelope-To: comp-simulation@munnari.oz.au X-Vms-To: in::"comp-simulation@munnari.oz.au" Relay-Version: VMS News - V6.0-3 14/03/90 VAX/VMS; site cc.curtin.edu.au Path: cutmcvax!puchm Newsgroups: comp.simulation Subject: double pendulum.. revisited.... From: puchm@cutmcvax.cutmcvax.cs.curtin.edu.au (RichardPuchmayer) Date: 18 Apr 91 01:47:49 GMT Sender: news@cutmcvax.cs.curtin.edu.au (Usenet News System) Distribution: world Organization: Curtin University of Technology, Computing Science Keywords: lagrange, pendulum, dynamics, potential Nntp-Posting-Host: cutmcvax.cs.curtin.edu.au Dear netters, Having received advice as to which books to look in, I have looked in those books. (thanks for the pointers) I now know a bit about Lagrangian dynamics: L = T - U where : T = kinetic energy of the system U = potential -- " -- let d = partial derivative D = total derivative x = a generalized coordinate x. = time derivative of a generalized coordinate then: dL D dL -- - --(--) = 0 dx Dt dx. For ALL the examples I have looked at the derivation of the kinetic energy is not too difficult, but the formulation of the potential energy seems to be very problem dependent. Is there a general method by which to derive the potential energy for a system? Also: For a double pendulum : mass m1 is connected to a pivot by a massless rod of length l1, mass m2 is connected to mass m1 (via a pivot) by a massless rod of length l2. The angle between the vertical and rod(l1) is th1 and the angle between the vertical and rod(l2) is th2. The only forces acting on the masses are gravity and any constraint forces through the rods. Any variable with a dot '.' after it denotes the first time derivative of that variable. Two dots '..' denote the second time derivative. T1 = 1/2 * m1 * l1 * th1. T2 = 1/2 * m2 * (l1 * th1. + l2 * th2.) U1 = -m1 * g * l1 * cos(th1) U2 = -m2 * g * l2 * cos(th2) * l1 * cos(th1) Are the potentials correct ? If YES, why ? If NO, why and what are the correct ones? The above questions should indicate a total lack of understanding as the the formulation og the potentials. Thanks, Richard. -- | Some of us are poets, some of us are not. | puchm@cutmcvax.cs.curtin.edu.au | | Richard Puchmayer, Masters Student at | Sorry but I | | Curtin University of Western Australia | don't know any other addresses | | I know nothing, so can hold no opinions for myself or others.....:-) | ------------------------------ To: comp-simulation@uunet.UU.NET Path: uwm.edu!convex.csd.uwm.edu!jonas From: jonas@convex.csd.uwm.edu (Jonas K Manske) Newsgroups: comp.simulation Subject: Need Flight Simulation References Date: 19 Apr 91 02:33:09 GMT Sender: news@uwm.edu Organization: University of Wisconsin - Milwaukee Originator: jonas@convex.csd.uwm.edu Hi, I am planning on writing a flight simulator for the NeXT. Does anybody know of any sources for designing flight simulators? Thanks ===== jonas ------------------------------ To: comp-simulation@hp4nl.nluug.nl Path: dutrun!winfave From: winfave@dutrun.tudelft.nl (Alexander Verbraeck) Newsgroups: comp.simulation Subject: Call for Part: 2nd Int Conf on Dyn.Modelling of Information Systems Keywords: dynamic modelling, information systems, simulation, petri-nets Date: 23 Apr 91 09:28:21 GMT Reply-To: winfave@dutrun.tudelft.nl (A.Verbraeck) Distribution: world Organization: Delft University of Technology, The Netherlands Call for Participation Second International Working Conference on Dynamic Modeling of Information Systems July 18-19, 1991 Washington, D.C. U.S.A. Organized by The American University (USA) Delft University of Technology (The Netherlands) Objective --------- Dynamic modeling is an approach for analyzing various aspects of information systems, including the behavior of actors and organizations employing information systems. The approach recognizes that activities happen concurrently in organizations, and that methods are needed to adequately model concurrency in information systems. The objective of the Second International Working Conference on Dynamic Modeling of Information Systems is to bring together interested researchers, educators and information systems users and developers for cross- fertilization and exchange of information and ideas. The expectation is that continued development of dynamic models of information systems will lead to the solution of a number of real-world problems in information systems development and operation. Papers and Discussions ---------------------- Nineteen high-quality papers were selected by a panel of referees for presentation and discussion at the conference. Sufficient time will be given for presentation and discussion of each paper. In addition, there will be a session devoted to developing a research agenda for future research in this rapidly growing area. The papers will cover several areas, including formal representations, petri-nets, simulation, dynamic modeling tools, and empirical research. Invited Paper ------------- Dr. Hubert Tardieu, SEMA Group, Direction Technique, will present an invited address. Dr. Tardieu has made significant early contributions to the field of dynamic modeling of information systems, and was one of the founders of the MERISE methodolgy for developing information systems. Location -------- The conference will be held on the campus of The American University, Washington, DC. Special rates have been obtained for the Holiday Inn, Chevy Chase, MD (on the METRO line, one stop from the AU campus.) The rate of $70 per night is good for unlimited stay before and after the conference. Fees ---- Conference registration of $350US includes all meals and the proceedings. Other information ----------------- Working Conference participation is limited to 85 participants. For more information, contact: Dr. Robert L. Crosslin Dept. of Comp.Sci. & Info.Sys., Clark Hall The American University Washington, D.C. 20016 Fax (202) 885-3155 e-mail rcross@auvm.bitnet or chopin!crosslin@uunet.uu.net Dr. Folkert W. Wierda Dept. of Information Systems Delft University of Technology P.O. Box 356 2600 AJ Delft, The Netherlands Tel 31 (15) 785811 / 784475 Fax 31 (15) 787022 / 786632 e-mail winffww@duticai.tudelft.nl ========================================================================= Preliminary Program Second International Working Conference on Dynamic Modeling of Information Systems July 18-19, 1991 Washington, D.C., USA Wednesday, July 17th -------------------- 7:00pm - 9:00pm Registration 8:00pm Welcome Reception Thursday, July 18th and Friday, July 19th: ------------------------------------------ H.G. Sol, F.Wierda, A. Verbraeck and R. Streng Dynamic Modeling of Information Systems: Anatomy of an Approach Delft University of Technology, The Netherlands Y. Yang Software Process Modeling Using Meta Objects Case Western Reserve University, USA P.W.G. Bots and R.C.J. Dur Dynamic Modelling of Organizations Using Model/Task Actor Simulation Delft University of Technology, The Netherlands D. Conrath, V. De Antonellis, and C. Simone Dynamic Modeling for Office Support System Analysis and Design University of Waterloo, Canada; University of Milan, Italy B. Speyer and P. Painter A Framework-Based Execution for Information Modeling MCC, USA R.K. Guha, M.Bassiouni, A. Dickenson, D. Roy and M.C. Fishcer Stochastic Petri Net Models of Distributed Simulation Systems University of Central Florida; US Army Materiel Command, USA E. Jordan The Simulation of IS/IT Strategy City Polytechnic of Hong Kong S. Becker and A. Hevner A Dynamic System Modeling Tool Using Box Structures and Petri Nets The American University; University of Maryland, USA S.Jablonski, B. Reinwald, T. Ruf and H. Wedekind Event Oriented Management of Function and Data in Distributed Systems University of Erlangen-Nuerberg, Germany K.M. Van Hee and P.A.C. Verkoulen Data, Process and Behaviour Modelling in an Integrated Specification Framework Eindhoven University of Technology, The Netherlands J. Warren and J. Stott CASE/Simulation: Making Performance Evaluation a Normal Part of IS Development University of Maryland-Baltimore County, USA T. Muck and M. Polaschek MOG: A CASE-Environment for the Specification of Transitional Constraints University of Vienna, Austria V. Savolainen Dynamic Framework of Reference of Information Systems Development University of Jyvskyl, Finland D. Nelson Modeling Enterprise Dynamics Information Engineering, Germany J.S.K. Ang, D. Conrath Analyzing Information Systems Using Petri Nets: Operations-Oriented Methodology The National University of Singapore; University of Waterloo, Canada S. Henderson, A. Gavine and E. Wolstinhome A System Dynamics Approach to Assessing the Impact of Information Systems from a Macro Perspective Royal Armament Research and Development Establishment; Bradford University, UK V. De Antonellis, B. Pernici, and P. Samarati Object Orientation in the Analysis of Work Organization and Agent Cooperation University of Milan, Italy T. Thomasma and Y. Chen New Research Problems in Dynamic Modeling of Information Systems University of Michigan-Dearborn, USA; Hefei University of Technology, People's Republic of China ========================================================================= Hotel Registration For Holiday Inn / Chevy Chase Second International Working Conference on Dynamic Modeling of Information Systems July 18-19, 1991 Washington, D.C., USA Please reserve room(s) for ___ persons. Arrival day, date Departure day, date __________________________________ _______________________________ Last name First Middle __________________________________ ______________________ _______ Affiliation ___________________________________________________________________ Address ___________________________________________________________________ City State ZIP Code or Country _______________________ _______________ _________________________ Phone Fax E-mail address _______________________ _______________ _________________________ If desired, reservations may be guaranteed by credit card. Reservations may be cancelled up to 6pm of date of arrival without charge to credit card. All rates are subject to additional local taxes. Please guarantee my arrival with (check box): o MasterCard o VISA o American Express o Carte Blanche o Diners Club Card No. _____________________________ Exp. Date _____________________________ Signature (Required) _______________________________________________ Send hotel registration information to: Holiday Inn / Chevy Chase Attn: Reservations, Group Number 5999 5520 Wisconsin Avenue Chevy Chase, MD 20815 ========================================================================= Conference Registration Form Second International Working Conference on Dynamic Modeling of Information Systems July 18-19, 1991 Washington, D.C., USA Last name First Middle __________________________________ ______________________ _______ Affiliation ___________________________________________________________________ Address ___________________________________________________________________ City State ZIP Code or Country _______________________ _______________ _________________________ Phone Fax E-mail address _______________________ _______________ _________________________ Pre-registration due by May 15 $325US Registration after May 15 $350US Student special rate $175US Working conference registration will be limited to 85 participants Registration may be paid with MasterCard or VISA. Checks, bank drafts and money orders should be written to the order of The American University and they should be payable in US dollars. If paid by credit card: o MasterCard o VISA Card No. _____________________________ Exp. Date _____________________________ Signature (Required) _______________________________________________ Send registration information and fees to: Robert Crosslin Department of Comp. Sci. and Information Systems Clark Hall, The American University Washington D.C. 20016 U.S.A. ========================================================================= ------------------------------ To: comp-simulation@rutgers.edu Path: bu.edu!bucsf.bu.edu!jdubb From: jdubb@bucsf.bu.edu (jay dubb) Newsgroups: comp.simulation Subject: suggestions for simulations in bio Date: 23 Apr 91 18:53:13 GMT Sender: news@bu.edu.bu.edu Distribution: usa Organization: Computer Science Department, Boston University, Boston, MA, USA Originator: jdubb@bucsf.bu.edu I am posting this for a friend of mine who doesn't have access to USENET, so please respond directly to mlevin@jade.tufts.edu. I am a computer science/biology student, and am possibly going to be involved in a project on computer simulations for the biological sciences. I would like some advice on two things: 1) what are some of the things that people in bio are modeling? I have a list already, but I'd like to hear other people's ideas (I'm probably missing a lot). and 2) in general (not necessarily biology-related): are there any modeling/simulation languages/systems/packages out there? Are any in the public domain (for mainframes)? Can anyone point me to references, or to manuals for such things, so that I can take a look at the features that are present in simulation language packages? Any ideas would be greatly appreciated. Thanks. P.S. Please, please mail directly to me, not to jdubb@bucsf. Mike Levin (mlevin@jade.tufts.edu) ------------------------------ END OF SIMULATION DIGEST ************************