simulation@uflorida.cis.ufl.edu (Moderator: Paul Fishwick) (11/22/88)
Volume: 6, Issue: 7, Mon Nov 21 15:10:18 EST 1988 +----------------+ | TODAY'S TOPICS | +----------------+ (1) Random Number Generators (2) NSF Workshop at Bucknell University (3) TimeWarp Approach * Moderator: Paul Fishwick, Univ. of Florida * Send topical mail to: simulation@uflorida.cis.ufl.edu * Archives available via FTP to bikini.cis.ufl.edu, login as 'anonymous', use your last name as the password, change directory to pub/simdigest. ----------------------------------------------------------------------------- To: comp-simulation@rutgers.edu Path: uwvax!speedy!bier From: bier@speedy.cs.wisc.edu (George Bier) Newsgroups: comp.simulation Subject: random number generators generate numbers without replacement Date: 14 Nov 88 21:25:11 GMT Sender: news@spool.cs.wisc.edu This is something I am curious about and thought that someone who reads this news group might know of an article that discussed the following query. I was reading last months Communications and there was a rather good article on random number generators. (I wish I had the issue here to give a better reference such as the author). Anyway the article makes the point that the standard polynomial methods for generating psuedo-random numbers do so without replacement (in retrospect this was an obvious point that I should have realized ages ago, if we get the same number, then we have restarted the cycle). Now I am aware that there are various tests for measuring how good a random number generator is (good defined here as how random), but it occurs to me that the fact that numbers are drawn without replacement must have some effect. Now I agree that in practice, even without replacement, if we get the number 0.89785421 once and then later get the value 0.89785422 (the last digit changed from a 1 to a 2) the two values for most applications are the same, and so we effectively get replacement. However I am curious as to whether anyone out there knows of a specific article or book that discusses this issue? thanks --george ARPA: bier@cs.wisc.edu UUCP: ...!{harvard,seismo,topaz,akgua,allegra,usbvax}!uwvax!bier ------------------------------ Date: Tue, 15 Nov 88 08:24 EST From: ABURDENE%BKNLVMS.BITNET%CUNYVM.CUNY.EDU@CUNYVM.CUNY.EDU Subject: NSF workshop @Bucknell University To: simulation@uflorida.cis.ufl.EDU X-Vms-To: IN%"simulation@uflorida.cis.ufl.edu" Workshop On Integrated Engineering Workstations for Science and Engineering Faculty Bucknell University The purpose of this workshop is to offer undergraduate faculty the opportunity to learn about several types of Integrated Engineering Workstations (IEW's) of varying complexity and capabilities. An IEW consists of microcomputer interfaced to data acquisition, test, and control instrumentation. Through experimental hand-on experiences in laboratory sessions, the participants will also develop an experiment and course materials for their own laboratory. Two similar one week sessions will be offered on: July 9-14, 1989 July 16-21, 1989 at Bucknell University Electrical Engineering Department Lewisburg, Pa. 17837 717-524-1234 Participant Support ------------------- The workshop is sponsored by the National Science Foundation and Bucknell University. There are no registration fees or tuition expenses for this workshop. A stipend of $250 will be paid to each selected participant. Housing will be in air-conditioned residential areas on Bucknell's beautiful campus and meals in our cafeteria and will be covered by the National Science Foundation. The participants are responsible for their travel expenses and other incidental expenses. Participant Selection --------------------- The selection process will rely heavily on the nomination by department heads or chairs of the participant's home institution. The workshop is intended for teachers of science and engineering in the US committed to undergraduate education who have not yet had extensive exposure to integrated engineering workstations. The selected participants will develop an experiment and class material for implementation at their institution. We will sustain the development of the experiments by providing information through an electronic mail network. We use Bitnet (Aburdene@BKNLVMS.Bitnet). The selected participants are required to submit a project proposal outlining the work to be undertaken after the short course. We will be pleased to help the participants formulate their proposals. Workshop Outline ------------------ We will begin with fundamental computer concepts, proceed to workstation concepts, and conclude with applications. Ample time will be provided to planning and construction of the participants projects. Our IEW's include personal computers with data acquisition and control instruments (mostly Hewlett-Packard computers and HPIB instruments), personal computers with PC instruments, and a lab with an ethernet network of computers using IEEE-488 instruments for distributed data acquisition and control. Workshop Faculty ---------------- Maurice F. Aburdene, Professor of Electrical Engineering and Computer Science Edward J. Mastascusa, Professor of Electrical Engineering William J. Snyder, Professor of Chemical Engineering Jeff Gum, Consultant Workshop Assistants ------------------ Wade Hutchison, College Engineer Tom Thul, Technician Constance O. Snyder, Industrial Associates Program Daniel Shaffer, undergraduate Student Application Form ---------------- The application form may be returned by electronic mail or through US mail to Aburdene@BKNLVMS.Bitnet Or Maurice Aburdene Electrical Engineering Department Bucknell University Lewisburg, PA 17837 717-524-1449 Application Form (Deadline for Applications May 31, 1989. Selected participants will be notified as applications arrive) Name of applicant: College or University: Mailing Address: Session 1 (July 9-14, 1989): or Session 2 (July 16-21,1989): Department Chair: Address of Department Chair and Applicant: Telephone Number: Electronic Mail Address (if available): Special Needs: End of application form ------------------------------ Date: Mon, 21 Nov 88 15:07:49 EST From: Paul Fishwick <fishwick@fish.cis.ufl.edu> To: simulation@ufl.edu [[forwarded from comp.parallel news group -paf]] >From: jevans@.ucalgary.ca (David Jevans) Newsgroups: comp.parallel Subject: Re: fine-grained and/or multiway optimi Summary: Jade TimeWarp Keywords: Time Warp Date: 21 Nov 88 14:32:55 GMT Sender: fpst@hubcap.UUCP Approved: parallel@hubcap.clemson.edu A good article about Virtual Time and Time Warp is: Jefferson D, "Virtual Time", ACM Transactions on Programming Languages and Systems, July 1985. When not working on my Msc, I work for Jade Simulations International. We have developed a Time Warp system for networks of SUNs and the BBN Butterfly. Discrete event simulations written in Sim++, a superset of C++, can be run on 1 to 128 processors without sacrificing determinism. If you are interested in Time Warp, see us at the SCS conference in San Diego, December 12, 13, 14, 1988. David Jevans, U of Calgary Computer Science, Calgary AB T2N 1N4 Canada uucp: ...{ubc-cs,utai,alberta}!calgary!jevans David Jevans, U of Calgary Computer Science, Calgary AB T2N 1N4 Canada uucp: ...{ubc-cs,utai,alberta}!calgary!jevans ------------------------------ +--------------------------+ | END OF SIMULATION DIGEST | +--------------------------+