[comp.simulation] SIMULATION DIGEST V9 N4

simulation@uflorida.cis.ufl.edu (Moderator: Paul Fishwick) (06/08/89)

Volume: 9, Issue: 4, Thu Jun  8 09:15:24 EDT 1989

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| TODAY'S TOPICS |
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(1) Call for Papers: Distributed Simulation
(2) Event Cancellation
(3) University Research Initiative

* 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.
* Simulation Tools available by doing above and changing the
  directory to pub/simdigest/tools.



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Date: Wed, 7 Jun 89 17:14:15 PDT
From: Richard Fujimoto <fujimoto@sapphire.Jpl.Nasa.Gov>
To: simulation@ufl.edu
Subject: Call for papers, distributed simulation conference

Call For Papers

Distributed Simulation
Part of the 1990 Western Multiconference
January 17-19, 1989
San Diego, California

All papers related to the execution of continuous or discrete simulation
programs on multiple processor computing systems are invited.
Papers may deal with simulation on systems ranging from geographically
distributed computing systems to tightly coupled multiprocessors
and SIMD machines.  Specific topics of interest include, but are not
limited to:

* Methods for distributed, concurrent simulation, discrete or continuous

* Concurrent simulation methods for particular classes of systems
  (e.g., neural networks, electronic circuits, weather, computer systems
  and communication networks, military applications)

* Concurrent graphics and animation for simulation

* Concurrent real time simulations (e.g., flight simulators, robot control)

* Machine architectures for concurrent simulation

* Programming constructs and languages for concurrent simulation

* Performance evaluation methods for concurrent simulation

* Empirical performance evaluation studies

* Real Time Simulation

Papers are due July 31, 1989.  Authors will be notified of acceptance
by September 30, 1989.  Camera ready copy is due October 31, 1989.

Papers must be in English and will be limited to 6 pages in the
conference proceedings.  Papers must contain original contributions
to the field that have not been previously reported in the literature.
Papers that contain incremental improvements of previously published
work should clearly indicate new aspects of the work in the abstract.

Each submission should include the name, complete address and phone number
of each author.  Send six copies of the full text of papers to:

Dr. David M. Nicol
Program Chairman, Distributed Simulation Conference
Department of Computer Science
College of William and Mary
Williamsburg, VA  23185


General Chairman
Dr. Richard Fujimoto
School of Information and Computer Science
Georgia Instritute of Technology
Atlanta, Georgia  30332

Program Committee
Jon Agre, Rockwell
Rassul Ayani, Royal Institute of Technology
William Bain, Intel
Mark Davoren,  Univ. of Edinburgh
Geoffrey Fox, Cal Tech
David Jefferson, UCLA
Walter Karplus, UCLA
Ed Lazowska, Univ. of Washington
Greg Lomow, Jade Simulations
Daniel Reed, University of Illinois, Urbana
Paul Reynolds, University of Virginia
Lisa Sokol, MITRE
Carl Tropper, McGill Univ.
Brian Unger, Jade Simulations


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To: simulation-maillist@ufl.edu
Subject: Event cancellation
In-Reply-To: Your message of Wed, 07 Jun 89 17:00:35 D.
             <8906072100.AA12638@fish.cis.ufl.edu> 
Date: Wed, 07 Jun 89 16:41:36 PDT
From: Sanjai Narain <narain%pluto@rand.org>


Dear Professor Nance:

Thank you very much for your illuminating reply.  I am going to examine
the papers which you mentioned.  My own view is, which I have developed
almost to completion, is that scheduling and unscheduling are *efficient*
mechanisms of enforcing the logic of something more abstract, namely,
causality rules which refer to the future of causing events.  An example
of such a rule is:

	An event of putting a kettle of water on the fire causes
	an event of water in it to boil at a future time provided it is
	not taken off the fire in between.

Now, if an event of putting a kettle of water on the fire occurs,
an event of its boiling can be scheduled. But if the kettle is taken
off the fire in between then the event can be unscheduled.

Recognizing that this is the purpose of scheduling/unscheduling one can
separate it from the causality rules and make it part of the simulation
procedure (or inference engine for causality rules).  The model itself can
consist of declarative causality rules.  The separation of logic from
control which results is extremely beneficial.

In existing models scheduling and unscheduling appear in the main model
itself, thereby obscuring the logic of the causality rules which the
modeler probably had in mind.

Of course, scheduling/unscheduling are not the only way to perform
inference with causality rules.  Thus, they can be dispensed with
altogether.

These ideas are discussed in a paper on the DMOD (Declarative Modeling)
system, which is under development.  A primitive description of it
appeared in this year's AI & Simulation conference.  The paper under
development contains a much better presentation. I would be happy to
send it to you or others who may interested, when it is done.

Comments are invited.

Regards.

Sanjai Narain
Rand.



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Date: 8 Jun 89 07:40:00 EDT
From: "Robert  Breaux" <breaux@ntsc-74.navy.mil>
Subject: UNIVERSITY RESEARCH INITIATIVE (URI-90)
To: "simulation" <simulation@bikini.cis.ufl.edu>

You may be interested in the ODDDR&E(R&AT/RLM) Secretary of Defense "University
Research Initiative Research Initiation Program" brochure, soliciting
proposals in the $50 - 250 K range from universities which traditionally
do not receive much DoD funding?

The brochure comes from the office above, Room 3E114, the Pentagon,
20301-3080, with a due date of 14 Sept 89 for proposals.  Each military
service plus DARPA have areas of interest.  Universities already receiving
$4M or more from DoD are ineligible.  One emphasis is to increase University
instrumentation, so they are looking for proposals with more than 10% cost
devoted to instrumentation.

Here are excerpts from the brochure on the Areas of Interest:

Army:  "smart materials and structures. . . including materials science,
electronics, biosystems, earth sciences and math modeling . . . and other
mathematical issues related to design and performance of smart materials and
structures."

Navy:  ". . . coordination in hierarchial team decision making. . . variables
that enhance coordination and enable teams to maintain coordinated action under
stress conditions characteristic of tactical environments. . . [such as]
command and control of tactical units in a battlegroup. . . resource allocation
decisions . . .[using] incomplete and uncertain information, with limited
intra-team communication in fast-tempo, high-risk threat scenarios. A
central scientific issue is the development of measures or indices of
coordination. . .[including]team organizational structure, degree of overlap
in team member "mental models, design of display interfaces common to the
team members, access to global vs. local databases, role of the team
leader as coordinator, adaptive coordination strategies, and tradeoffs
between explicit (communication) and implicit (computation) coordination."

Air Force:  "microstructural design, processing, and characterization of
materials"

DARPA:  "applied mathematics. . . wavelets and their application. . .
[to] fractals, the fractal measure of noise, partial differential equations,
and signal processing of speech and images . . ."

 __________________________________________________________________
Of the above, I figured the "Navy" work came closest to your interest, so
I was quite brief on the others.  Of course, the Navy stuff is from the
Cognitive Psychology group.  Within "simulation", this applies mostly to
the training device speciality.

Navy POC is Dr. W. S. Vaughan, (202) 696-4505, Office of Naval Research,
Washington, D.C.





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