Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site ucbvax.BERKELEY.EDU Path: utzoo!decvax!decwrl!ucbvax!info-graphics From: Info-Graphics-Request@AIDS-UNIX (Info-Graphics moderator Andy Cromarty) Newsgroups: mod.graphics Subject: Info-Graphics Digest Message-ID: <8602231126.AA27047@ucbvax.berkeley.edu> Date: Sun, 23-Feb-86 06:00:28 EST Article-I.D.: ucbvax.8602231126.AA27047 Posted: Sun Feb 23 06:00:28 1986 Date-Received: Sun, 23-Feb-86 12:59:44 EST Sender: daemon@ucbvax.BERKELEY.EDU Reply-To: Info-Graphics@AIDS-Unix Organization: The ARPA Internet Lines: 100 Approved: info-graphics@aids-unix.arpa Info-Graphics Digest Sun Feb 23 03:00:29 PST 1986 - Send submissions to Info-Graphics@AIDS-Unix - Send requests for list membership to Info-Graphics-Request@AIDS-Unix Today's Topics: IBM compatable presentation graphics Ph.D. Defense Announcement ---------------------------------------------------------------------- at 15:17:39 CST Date: 19 FEB 86 15:19-CST From: MCDONALD%UMKCVAX1.BITNET@WISCVM.WISC.EDU Subject: IBM compatable presentation graphics PC user, I have a user who wants a presentation graphics package for an IBM compatible. He thinks all he needs is bar charts, pie charts and line graphics. Wants it in color. Seen any recent comparisons?? Also, know any good graphic printers?? Probably won't want to spend to much on either. Thanks, -GaryM. BITNET contact UMKCVAXn (n=1, 3) Univ. of Mo. at K.C. ps. As I am not a subscriber to this digest, please reply to MCDONALD @ UMKCVAX1 . BITNET ------------------------------ From: Nasa Project Subject: Ph.D. Defense Announcement Date: Wed, 19 Feb 86 15:23 EST HIERARCHICAL REASONING: SIMULATING COMPLEX PROCESSES OVER MULTIPLE LEVELS OF ABSTRACTION Paul A. Fishwick University of Pennsylvania Ph.D. Defense Abstract This talk describes a method for simulating processes over multiple levels of abstraction. There has been recent work with respect to data, object, and problem-solving abstraction, however, abstraction in simulation has not been adequately explored. We define a process as a hierarchy of distinct production rule sets that interface to each other so that abstraction levels may be bridged where desired. In this way, the process may be studied at abstraction levels that are appropriate for the specific task: notions of qualitative and quantitative reasoning are integrated to form a complete process description. The advantages to such a description are increased control, computational efficiency and selective reporting of simulation results. Within the framework of hierarchical reasoning, we will concentrate on presenting the primary concept of process abstraction. A Common Lisp implementation of the hierarchical reasoning theory called HIRES is presented. HIRES allows the user to reason in a hierarchical fashion by relating certain facets of the simulation to levels of abstraction specified in terms of actions, objects, reports, and time. The user is free to reason about a process over multiple levels by weaving through the levels either manually or via automatically controlled specifications. Capabilities exist in HIRES to facilitate the creation of graph-based abstraction levels. For instance, the analyst can create continuous system models (CSMP), petri net models, scripts, or generic graph models that define the process model at a given level. We present a four-level elevator system and a two-level "dining philosophers" simulation. The dining philosophers simulation includes a 3-D animation of human body models. Time: Wednesday, February 26, 3pm Place: Moore School, Room 554 Committee: Dr. Norman Badler (Adviser) Dr. Timothy Finin (Chairman) Dr. Insup Lee Dr. Richard Paul ------------------------------ End of INFO-GRAPHICS ********************