HDTenEightyP/NetNews huggingface dataset:
From: dobinson@cadence.com (Ian Dobinson)
Subject: Re: a problem in invoking IL
Reply-To: dobinson@cadence.com
Organization: Cadence
Date: Thu, 27 Aug 1992 10:18:16 GMT

In article 1411@newsserver.cs.uwindsor.ca, arindam@cs.uwindsor.ca (Arindam Das) writes:
>while using IL interpreter in OpenWindow I came across a problem:
>
>First i tried
>
><45> mprocedure( addition(a)
>            println(a))
>
>and it worked. Then I tried
>
><46> mprocedure( addition(a)
>	    a) 
>

I presume that you then tried to run function addition, i.e.
<47> addition(???)

The reason it gets stuck is that the argument to an mprocedure is the
full procedure call, including the procedure name, so if you re-evaluate
the whole argument, you effectively call the function again, thus giving
you an infinite recursion.

>and it got stuck. I typed ^C but it was of no use.

I'm suprised this didn't work, sometimes it can take a long time to cause an
interupt and a long time to unwind the stack. If this doesn't seem to be
working I usually try ^Z and then kill %, which seems to work.

>Then I quit the shelltool window (without exiting "access") 
>where i had invoked "access".
>Next I  opened a new shelltool window and tried to invoke "access"
>again. And I got the following message:
>
>Your key validation has failed for product dbaccess:
>    Software expired.
>The Cadence program `access' will not run until this
>problem is resolved.

Sorry, I don't know what this is, but I would guess that it will go away if
you kill your license manager and restart it.

> 
>Could someone please help me out how to solve the problem ? 
>
>Thanx in advance
>
>-arindam

Cheers.

Ian.
From: strataki@cerberus.csi.forth.gr (Manolis Stratakis)
Newsgroups: comp.cad.cadence
Subject: Cadence -> TekWaves Test Vector Translation.
Date: 27 Aug 92 11:47:22 GMT


	Hello,

	We try to solve a problem concerning the conversion
of test vectors generated by Silos to a format suitable
to be read by TekWaves, and eventualy by the Tektronix 
LV500 verifier.

	We have tried several ways to interface Silos to 
TekWaves: Eurochip has provided us with some scripts to do
the job, but unfortunately they didn't work in our case.
We tried to do the conversion ourselves by writing C 
programs and awk filters, but TekWaves is still not happy.

	If somebody has faced the problem before, please e-mail
me any solutions, ideas, or possible information sources.
	
	Thanks a lot,

	Manolis Stratakis,				(strataki@csi.forth.gr)
	Computer Science Institute,
	Foundation of Research and Technology - Hellas.
From: sb@next.neuro.emory.edu (Stephen O. Berger)
Newsgroups: comp.cad.cadence
Subject: ....CAD package for human organ modelling.
Date: 4 Sep 92 14:28:58 GMT
Reply-To: sb@next.neuro.emory.edu




  Hi,

    I'm looking for recommendations for a PC cad package that will allow
  me to build 3-D wireframe models of real world irregularly shaped
  objects (e.g. human heart, liver, kidkeys, etc.).

    The selection criteria that the package must meet are :


	(1) Allow for construction of 3-D polygon surface mesh
            models.

        (2) Must have documentation on the format of stored files
	    and/or be able to export to some known format.

	(3) Should store data as POLYGONS, not simply vertex drawing
            lists.

        (4) Support digitizing tablet input.


    If anyone has suggestions for a package which meets these criteria,
  I would be very grateful.


  Steve Berger (sb@onripx.neuro.emory.edu)
Xref: sparky comp.cad.cadence:262 comp.lsi.cad:924
From: kimb@phred.UUCP (Kim Butler)
Newsgroups: comp.cad.cadence,comp.lsi.cad
Subject: Design Data archive
Date: 31 Aug 92 20:57:25 GMT
Reply-To: kimb@phred.UUCP
Organization: Physio-Control


Hello,

	After the design has been completed, and the manufacturing floor is up and
running, how do you archive the design.  At the present time lets look at only
PCB design.

1)  Is there a standard intermediate format ?  (The present shelf life of our boards
    is about 20 years, and a change may occur once every 5 years.  Often the change
    rate is longer than the life of the CAE environment intial used to design it.)

2)  What about EDIF for schematics and IGES for PCB ?

3)  How are libraries currently handled ?

4)  Are there any active IEEE, EIA or some other organizations looking into this area ?
    (This is a problem which should be addressed and have the same level of interest
      as the CFI, unless the average product shelf life is 1 year.)

	We are currently using Valid and will be moving to Cadence.  Designs done
4 or 5 years ago will all have to be converted into the Cadence environment. 

Thanks, Butler

Kim Butler
From: syawanar@cc.curtin.edu.au
Subject: Simple Vision Simulation
Organization: Curtin University of Technology
Date: Tue, 1 Sep 1992 15:39:20 GMT
Apparently-To: comp-simulation@munnari.oz.au


In my fourth (and final) year in engineering, I have been asked to do 
the impossible.. 

Supoose A robot was have only four photocells for a vision system..
How would it be possible for it to see effectively? This is how the
cells divide the view..



     +----------+-----------+
     |          |           |
     | Cell 1   |  Cell 2   |
     |          |           |
     +----------+-----------+
     |          |           |
     | Cell 3   |  Cell 4   |
     |          |           |
     +----------+-----------+

The vision cone is 120 degrees from the left edge to the right edge
and 120 degrees from the top edge to the bottom edge. I have found that by 
sweeping through a 120 degree 'fan' in 1 or 2 degree steps (whilst taking 
readings at each step) one can construct a *crude* view of what is ahead.

What I need to do is write a program that will simulate the robot moving
thru a 3D world. Once a certain object looms ahead (in proper 3D, with 
shading..) then the user hits a key and the robot is required to give it's 
own interpretation of what it 'sees' by means of the 'simulated' sensors.
IE, the screen is split into four and each quarter of the screen is 'de-
focused until only the average intensity of the entire quarter is relevant.
This is repeated for each step 2 degrees at a time..
A curve can be plotted from the values obtained at each of the sensors
and patterns might be recognized.. etc..

Any ideas along these lines or anything totally different are most welcome.
 
+---------------------------------------------------------------+
|Naveen Yawanarajah \ Internet :    syawanar@cc.curtin.edu.au   |
|                    \ Fidonet :    3:690/613                   |
| The BEAsT           \ POST   :    4 Woonan Pl., KARAWARA 6152 |
|       goes on!!      \       :    PERTH, WESTERN AUSTRALIA... |
+---------------------------------------------------------------+     



------------------------------


Subject: [PUBLICATIONS]


------------------------------


Date: Mon, 31 Aug 92 10:49:18 PDT
From: mtvnec!lsoule@nec-gw.nec.com (Larry Soule)
To: simulation@bikini.cis.ufl.edu
Subject: Technical Report available: Parallel digital logic simulation


A technical report of my dissertation is now available.

Title:	  Parallel Logic Simulation: An Evaluation of
	Centralized-Time and Distributed-Time Algorithms

Author:   Lawrence Peter Soule' (soule@mojave.stanford.edu)

The report can be ordered through the CSL librarian, Naomi Schulman.
She can be reached at 415-723-1430, schulman@sierra.stanford.edu, and at
Naomi Shulman
Computer Systems Lab
ERL 444A
Stanford University
Stanford, CA 94301




------------------------------


Subject: [CALL FOR PAPERS/PARTICIPATION]


------------------------------


To: comp-simulation@uknet.ac.uk
From: simulation@uflorida.cis.ufl.edu (Moderator: Paul Fishwick)
Newsgroups: comp.simulation
Subject: SIMULATION DIGEST V28 N10
Date: 26 Aug 92 19:01:24 GMT
Reply-To: simulation@uflorida.cis.ufl.edu

Volume: 28, Issue: 10, Wed Aug 26 15:00:49 EDT 1992

+----------------+
| TODAY'S TOPICS |
+----------------+

 
[NEW QUESTIONS]
  DYNAMO Packages for MAC and UNIX
  Implementing the Pspice LAPLACE Option
  Dewdney's Planiverse
  Fluid Dynamics Simulation
  Generating Qualitative Descriptions
[REGARDING PAST QUESTIONS]
  Simulating Group Behavior
  N Body Simulation
[CALL FOR PAPERS/PARTICIPATION]
  Computer Aided Design
[DEPARTMENTS]
  Simulation in the Service of Society

* 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 'anonymous', use your e-mail address as the password, change
  directory to pub/simdigest. Do 'binary' before any file transfers.
* Simulation Tools available by doing above and changing the
  directory to pub/simdigest/tools. 

 


-----------------------------------------------------------------------------


Subject: [NEW QUESTIONS]


------------------------------


From pvye@u.washington.edu Wed Aug 19 01:21:35 1992
	(5.65/UW-NDC Revision: 2.22 ) id AA09388; Tue, 18 Aug 92 22:21:34 -0700
Date: Tue, 18 Aug 92 22:21:34 -0700
From: Patrick Vye <pvye@u.washington.edu>
To: simulation@bikini.cis.ufl.edu
Subject: System Dynamic Simulation package?

Hello,

I am trying to get some help finding a simulation package.

I am trying to find a continuous simulation package that is similar
to DYNAMO but works on the MAC or under UNIX.

I don't need a graphical capability, but would like the syntax
to be similar to DYNAMO so that I can set up an an input file that 
specifies rate, level and auxiliary equations.  It can solve the 
equations using Euler's method or Runge-Kutta.  Again, there is 
no need for a graphical capability for either input or output.

I plan to use the simulation in batch with another application.

Any pointers to a package would be greatly appreciated.    

Pat




------------------------------

To: comp-simulation@inria.inria.fr
From: bardo@ief-paris-sud.fr (Bardo Muller)
Newsgroups: comp.lsi.cad,comp.lsi,comp.simulation,alt.cad,sci.comp-aided,sci.math.num-analysis
Subject: PSPICE, option LAPLACE - algorithm ?
Keywords: spice,laplace transform,transient analysis,convolution
Date: 19 Aug 92 14:00:00 GMT
Reply-To: bardo@ief-paris-sud.fr
Followup-To: comp.lsi.cad
Organization: Universite de Paris


Hi there!

Does anyone have any pointers, code, literature or other comments on how to
implement something similar to the PSPICE LAPLACE option ?

[ you describe an (arbitrary ?) function F(s) in the frequency domain which is then used in a (nonlinear, variable timestep) transient analysis ]

Convolution with the inverse transform of the impulse response should be
one viable method. Is there any more analytical (even approximative) approach known ?

At the moment I experiment with a backward-euler for rational functions N(s)/D(s).

Ideas ?  Please e-mail. I will post a summary of the proposals.

Thank you !

Bardo

___________________________________________________________________________
| Bardo MULLER                          | phone  : [33] [1] 69 41 78 50    |
| Institut d'Electronique Fondamentale  | fax    : [33] [1] 60 19 25 93    |
| Bat. 220 Universite Paris Sud         | e-mail : bardo@ief-paris-sud.fr  |
| 91405 ORSAY CEDEX FRANCE              |          THE NET WORKS !         |
|_______________________________________|__________________________________|



------------------------------

Posted-Date: Mon, 24 Aug 1992 16:37:27 GMT
Newsgroups: comp.simulation
From: wlh04953@aero.org (William L. Hayden)
Subject: planiverse
Relay-Version: version Trumpet 1.03; site elp.aero.org
Summary: Is there any life on this group ?
Organization: The Aerospace Corporation
Posting-Version: version Trumpet 1.03; site elp.aero.org
Date: Mon, 24 Aug 1992 16:37:27 GMT
Apparently-To: comp-simulation@ucsd.edu

Just read DEWDNEY's Planiverse.
Does the class project program 2DWORLD or equivalent exist ?
If so is it available for download somewhere (FTP) ?

Thanks in advance for any response.



------------------------------

Newsgroups: sci.areonautics,comp.simulation
From: infmx!johng@uunet.UU.NET (John Galloway)
Subject: Fluid dynaics sim (50mph air) on a Quadra 700, is it possible?
Originator: johng@godzilla
Organization: Galloway Research
Distribution: ca
Date: Tue, 25 Aug 92 09:30:14 GMT
Apparently-To: uunet!comp-simulation

I have been tinkering around with various edge treatments for the
windshield on my motorcycle in an attempt to reduce/move/affect
the turblance layer that comes off the trailing/top edge (right into
my helmeted head (helmet skirts and/or ear plugs are the existing
answer).

I would like to get more scientific about this and am wondering if
my mostly idle but up all day Quadra 700 A/UX system could be useful
doing fluid dynamics simulations of proposed configurations.

I would appreciate some guesses as to the complexity of such calculations
(navier-stokes or something like that?) needed to carry out such simulations
(even assuming the sw is available and not toooo expensive).

Just wild guessing I get:

3.00            width (ft.)
3.00            length
3.00            height

46,656.00       cubic inches
8.00            points/inch
23,887,872.00   points/data set

3.00            floats per point in dataset (3D pressure vector?)
4.00            bytes per float
15.00           flops/point/itteration (vector to components and back and?)
1,025.16        MFlops/itteration
50	        itterations (gives ?? 1/4 second at 50 mph?)
500.00          MFLOPS of sys
30              % of run MFLOPing
341.72          hours for run
14.24           days for run

0.01            MB/sec (reading/writing compressed data for run)
273.38          MB/raw data set
2.73            compression ratio to achive:
100.00          MB/compress data

Which says that even on a 500MFLOP machine I would need 1/2 month, with 1/8
inch grid spacing, on a 5(?)MFLOP Quadra => no way.  Is this problem really
not this bad, or have I guessed close enough to be clear that its totally not
feasable to get any meaningfull results (for design assistance) within a few
days on a Quadra.  The data set size is actually viable, I could make good
use of a new 1.5GB disk, and 68MB of memory, but its the crunchyness, or
lack of it, that kills the idea.  right?  thanks.
        -jrg

internet    jrg@galloway.sj.ca.us  John R. Galloway, Jr  795 Beaver Creek Way
applelink   D3413                  CEO...receptionist    San Jose, CA   95133
                                   Galloway Research     (408) 259-2490                                                           
 -- 
internet    jrg@galloway.sj.ca.us  John R. Galloway, Jr  795 Beaver Creek Way
applelink   D3413                  CEO...receptionist    San Jose, CA   95133
                                   Galloway Research     (408) 259-2490



------------------------------

Newsgroups: comp.ai,comp.simulation
From: cbl6rjw@gps1.leeds.ac.uk (R.J. Williams)
Subject: qualitative description of the output of a quantitative simulation
Organization: University of Leeds, England
Date: Wed, 26 Aug 1992 16:35:20 GMT
Apparently-To: simulation@uflorida.cis.ufl.edu

Hello,

I am trying to find information on any systems that can generate
qualitative descriptions of output from a quantitative simulation.  We
are utilising a quantitative modelling system which uses a flow metaphor;
instrumentation can be placed anywhere on the model.  Each piece of
instrumentation produces a value every dt.

[[ED: You might consider using qualitative analysis for systems of
differential equations. Consider "Practical Numerical Algorithms for
Chaotic Systems" by Parker and Chua for algorithms yielding qualitative
insights (Lyapunov exponents, fixed points, etc.). Also, there is work
in AI that has focused on this area -- see the past few AAAI/IJCAI
proceedings -PAF]]

We have a knowledge based version of the quantitative model with
dependencies represented (but not the actual formulas).  We would
like to produce a qualitative description using this together with the
quantitative output.  Recognising maxima, minima, decreasing and
increasing values is ok, but we would also like to be able to notice
periodicity, possible relationships between features in different
output streams and trend analysis.

Thanks for any pointers,

rod
 ----
Roderick Williams          rodw@cbl.leeds.ac.uk



------------------------------


Subject: [REGARDING PAST QUESTIONS]


------------------------------


Newsgroups: comp.simulation
From: jones@pyrite.cs.uiowa.edu (Douglas W. Jones,201H MLH,3193350740,3193382879)
Subject: Re: Application to the Softer Sciences
Date: Fri, 21 Aug 1992 16:25:15 GMT
Organization: University of Iowa, Iowa City, IA, USA
Apparently-To: comp-simulation@uunet.uu.net

>From article <1992Aug21.072608.22299@uwm.edu> in sci.cognitive,
by spice@convex.csd.uwm.edu (James G Spice):

> I am a graduate student in Political Science, a field not well known
> for its mathamatical or modeling sophistication (though exceptions
> certainly exist).  Does anyone know of any applications of cognitive
> science methods in the softer social sciences?

I can't help in the area of political science, but I'm involved in
developing a system for simulating the behavior of small groups of
people confonting crisis situations, known as Icarus because it is
a bit of a high-risk venture.  Icarus uses a discrete-event simulation
framework (as commonly used in operations research) with small expert
systems used to model each human participant in the group.

One aim of Icarus is to allow simulation models to express the contents
of the "rule books" for such contexts as nuclear reactor control rooms
in order to ask the question "if people played by these particular
rules through this scenario, what is the likelyhood of a successful
outcome."  The cost of such experiments using human subjects can be
outrageous, but cased like Three Mile Island and the Stark incident
make such experiments quite valuable.

A second aim is to allow the formulation of more nearly formal theories
about small group behavior in the form of simulation models.  The use
of simulation methodology can give such a theory a predictive value
comparable to the predictive value of traditional theories in the hard
sciences, and this can significantly reduce the number of experiments
needed to explore the behavior of such a group.

The Icarus simulator is extremely limited in what it can accomplish!
It cannot model learning, metaknowledge (that is, my knowledge about
what I or others know), complex concepts, or convoluted reasoning, and
we cannot handle more than a handfull of people in one of our models.

Without learning, Icarus can be used to model crisis situations where
the feedback on which learning could be based happens too late to
influence the outcome.  We can deal with simple quantitative knowledge,
including, eventually, fuzzy quantities, and this should be quite
adequate for many purposes, for example, the reactor control example
where things like water pressure, temperature, and level are the key
bits of knowledge exchanged by the participants.

Currently, our work on Icarus is bogged down in some interesting
technical problems that arise when you try to combine expert systems
with discrete-event simulation.  We now know two or three ways to fix
these problems, but we don't know which is right way to go.  When we've
solved these problems, we'll start to try to attract a user community
from among small-group sociologists and the management science
community.
				Doug Jones
				jones@cs.uiowa.edu





------------------------------

Newsgroups: comp.simulation
From: uad1184@dircon.co.uk (Dino Dini)
Subject: Re: Gravitational motion errors
Date: Tue, 25 Aug 1992 22:53:47 GMT

simulation@uflorida.cis.ufl.edu writes:

>I am going to be writing a little routine to do N-body gravitational
>motion simulations in 2 dimensions.
>
>The first time I tried this I had some sort of error (perhaps a rounding
>error) that caused free objects to continuously gain momentum down
>the screen.  When I modified it to allow objects that drop off the 
>bottom of the grid/screen to reappear at the top, they quickly gained
>significant momentum and zipped around in an interesting, if not 
>useful, way.
>
>Does it sound like I just need to be more careful about rounding
>off numerical values?
>
>Sorry if this is lame... I haven't much simulation experience.
>
>Michael McGinnis                Internet: mcginnis@kuhub.cc.ukans.edu
>Computer Center                   Bitnet: mcginnis@ukanvax
>University of Kansas               Voice: (913)864-0413
>Lawrence, KS  66045                  FAX: (913)864-0485
>
>Rust never sleeps.

It is difficult to say without seeing your listing. I have done 
an N-body simulation crudely in X using floating point. Rounding 
errors create inaccuaracies, but the general behavior is consistent 
with what you expect. From the sound of it you had a fairly 
major bug in there.



------------------------------


Subject: [CALL FOR PAPERS/PARTICIPATION]


------------------------------


To: comp-simulation@ux1.cso.uiuc.edu
Subject: ICCAD-92 Registration (CAD Conference)
From: carrie@iti.gov.sg (Carrie-IIRS)
Subject: query on touchscreen
Summary: requesting information on TouchMate or similar touchscreen products
Keywords: touchscreen
Organization: Information Technology Institute, National Computer Board, S'pore
Date: Tue, 1 Sep 1992 09:14:11 GMT

I am currently sourcing for touchscreen products for a project.
In particular, I know of this company Visage Inc which has introduced 
TouchMate, a product which provides touch-input capabilities for display 
monitors.  

I would appreciate if anybody could provide information on TouchMate
(it would be most helpful if you could provide me with the Internet
mail address of the contact person in Visage Inc) or any other touchscreen 
products which provide support for DOS, Microsoft Windows, X-windows 
and Apple computers.

Please reply via email to :   carrie@iti.gov.sg

Thanks you very much.


Carrie Yeo
National Computer Board
Singapore 
Newsgroups: comp.misc
From: crpresto@rs6000.cmp.ilstu.edu (Charlie Preston)
Newsgroups: comp.misc
Subject: Re: PRODIGY - Speed, Cost, Usefulness, etc.
Keywords: prodigy macintosh
Date: 31 Aug 92 13:30:03 GMT
Distribution: usa
Organization: Illinois State University

In article <1992Aug31.132528.28183@rs6000.cmp.ilstu.edu> crpresto@rs6000.cmp.ilstu.edu (Charlie Preston) writes:
Part of my last posting was lost.

>In article <1992Aug29.051624.6704@ctr.columbia.edu> jwiegand@moe.eng.temple.edu () writes:
>>
>>Well, my newspaper does not force me to read the ads, as P* does.
>
>I've learned to ignore the bottom portion of the screen just as ignore the
>advertising in the newspaper.
>
>>I tried Prodigy twice, and the second time it was worse because
>>they added animated ads. Not only did I have to wait for the ad to finish,
>>many of them had 5-10 screens (animation cells).
>
>A little familiarity with the system could have avoided being stuck in an
advertisement 'Jump', etc.

Chas
using 'Path',
Xref: sparky comp.misc:3411 comp.sys.mac.misc:15643