simulation@uflorida.cis.ufl.edu (Moderator: Paul Fishwick) (07/03/90)
Volume: 16, Issue: 5, Mon Jul 2 15:53:23 EDT 1990 +----------------+ | TODAY'S TOPICS | +----------------+ (1) REQUEST: SmallTalk Source Code (2) Robotic Hand Simulation (3) VISUALIZATION '90 (4) Virtual Reality vs. Simulation (5) RE: Virtual Reality vs. 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. ----------------------------------------------------------------------------- From: lath@geocub.greco-prog.fr (Laurent Lathieyre) Date: 20 Jun 90 21:44:14 GMT To: comp-simulation@inria.inria.fr Subject: Submission for comp-simulation Responding-System: geocub.greco-prog.fr Path: geocub!geocub.greco-prog.fr!lath From: lath@geocub.greco-prog.fr (Laurent Lathieyre) Newsgroups: comp.lang.smalltalk,comp.simulation Subject: seeking simulation code in smalltalk Date: 20 Jun 90 21:44:14 GMT Sender: lath@geocub.greco-prog.fr Distribution: world Organization: University of Bordeaux I - FRANCE I'm seeking the correct sources of the simulation frame proposed by Goldberg and Robson in "Smalltalk, the language and its implementation or other smalltalk sources for simulation and which use event-driven approach. Laurent Lathieyre E-MAIL : lath@geocub.greco-prog.fr ------------------------------ To: comp-simulation@ames.arc.nasa.gov Path: jato!neuron1!harry From: harry@neuron1.Jpl.Nasa.Gov (Harry Langenbacher) Newsgroups: comp.simulation Subject: robotic hand simulation Keywords: robot simulation Date: 21 Jun 90 18:15:50 GMT References: <23538@uflorida.cis.ufl.EDU> Sender: news@jato.Jpl.Nasa.Gov Reply-To: neuron1!harry@jato.Jpl.Nasa.Gov (Harry Langenbacher) Organization: Jet Propulsion Laboratory, Pasadena CA Does anyone know of a good dextrous hand simulator? I would like a graphical display. What kind of hardware is necessary? - Harry Langenbacher 818-354-9513 harry%neuron1@jpl-mil.jpl.nasa.gov harry@neuron1.jpl.nasa.gov 128.149.12.7 ------------------------------ Date: Fri, 22 Jun 90 10:58:44 -0400 From: danchak@mstr.hgc.edu (Michael Danchak) To: fishwick@ufl.edu Subject: VISUALIZATION '90 Visualization '90 Sponsored by IEEE Computer Society, Technical Committee on Computer Graphics In cooperation with ACM/SIGGRAPH October 23 - 26, 1990 Le Meridien Hotel San Francisco, California The conference will explore how visualization is being used to extract knowledge from data. The conference is concerned with all aspects of visualization, with a focus on interdisciplinary techniques. The conference will allow a dialogue to occur between the developers of visualization methods and visualization users across the full spectrum of science, engineering and business. Papers will be presented in the following areas: 3D Systems and 3D Modeling Volume Visualization Algorithms and Techniques Visualization of Higher Dimensions Scalar and Multivariate Data Visualization Data Handling and Visual Representation Human Computer Interface with Visualization Tools and Techniques for Scientific Visualization End-User Data Visualization Systems Visualization in Fluid Dynamics Applications of Visualization to Scientific, Engineering, Biomedical, and Business Problems Panels: Graphics and Imaging: Trends Toward Unification Matt Ward , Worcester Polytechnic Intitute Human Perception and Visualization Laurie Reuter, Bellcore Multispectral Visualization Ronald M. Pickett and Haim Levkowitz, Institute for Visualization and Perception Research, the University of Lowell How can Visualization lead to Breakthroughs in Engineering and Science? Phil Neray, Alliant Computer Systems Interaction Issues in Visualization: Requirements, Techniques and Tools. Hikmet Senay, George Washington University Making a Picture Fit the Eye: Human Engineering for Computer Graphics. Lawrence Stark, University of California at Berkeley Tools for Visual Data Analysis - User Experiences. David Prawel, Precision Visuals Case Studies: Factors Inducing Periodic Breathing in Humans (Syracuse University) Non-Linear Engineering Analysis (Boeing Computer Services) Personal Visualization System (Johns Hopkins University/ Applied Physics Laboratory) Semi-Autonomous Robotic System Visualization (Sandia National Laboratory) Volume Microscopy (Vital Images) Real World Applications of Visualization Solutions (Precision Visuals Inc.) Interdisciplinary Visualization (National Center for SuperComputer Applications) The Future Video Telecomputer (Pacific Interface) Interactive Investigation of Fluid Mechanics Data Sets (Intelligent Light) Tutorials: Visual Programming Environments Ephraim Glinert, Rensselaer Polytechnic Institute Knowledge Visualization Aaron Marcus, AM Associates Computer Vision Azriel Rosenfeld, University of Maryland Visualizing Multidimensional Data William Cleveland, AT&T Bell Laboratories Volume Visualization Pat Hanrahan, Princeton ------------------------------ Date: Mon, 2 Jul 90 15:47:01 -0400 From: Paul Fishwick <fishwick@fish.cis.ufl.edu> To: simulation@ufl.edu Subject: Virtual Reality vs. Simulation [[Taken from sci.virtual-worlds -PAF]] >From uflorida!uakari.primate.wisc.edu!dali.cs.montana.edu!milton!peterl@ibmpcug.co.uk Mon Jul 2 13:31:43 EDT 1990 Article 259 of sci.virtual-worlds: Path: uflorida!uakari.primate.wisc.edu!dali.cs.montana.edu!milton!peterl@ibmpcug.co.uk >From: peterl@ibmpcug.co.uk (Peter Leaback) Newsgroups: sci.virtual-worlds Subject: RE: what is a virtual reality ? Date: 22 Jun 90 14:08:07 GMT Sender: hlab@milton.u.washington.edu Organization: The IBM PC User Group, UK. Approved: hitl@hardy.u.washington.edu I know this is a reply to an old message, but here goes... What is the difference between a virtual reality and a simulation? My answer is consistency. A stick model of a water molecule is a simulation of a real water molecule, but if you jump into a swimming pool full of stick water molecules, you won't get wet. The stick water molecules have many inconsistances compared to real molecules, so when one trys to interact the stick molecules with real ones, you have problems. But if a man made up of stick model molecules jumps into that same swimming pool, he WILL get wet. For something to be called a virtual reality it must earn the name "reality". In our reality, there are no inconsistencies in physics, and what looks like an inconsistency is just limitations in our knowledge. You might say in reply to this that it will take a heck of a long time for us to generate a virtual reality. This is not so, a book can be a virtual reality as long as it only makes references to words, paper, and to other books. This is not a very useful virtual reality. :-) Another example of a virtual reality is a global weather "simulation". It is a virtual reality as long as it is not compared to real global weather or a user wishes to interact with it, because then it merely becomes a simulation. So something is a virtual reality when it is internally consistent and the observer treats it as such.Therefore, MANY simulations are also, in fact, virtual realities as long as they comply with the above. Saying that a global weather simulation is also a virtual reality is *useless*, because the whole point of writing a global weather simulation is to extract information to compare with the real world.So the global weather simulation will *always* be thought of as a simulation. What reason do we have to make the distinction between a virtual reality and a simulation at all ? Up to recently, none. But if human can interact with a virtual reality and still keep consistencies within the virtual reality and keep consistencies in our reality, then that *will* be useful. It goes without saying that no one has achieved this. Pete Leaback. -- Automatic Disclaimer: The views expressed above are those of the author alone and may not represent the views of the IBM PC User Group. -- -- ------------------------------ Date: Mon, 2 Jul 90 15:47:09 -0400 From: Paul Fishwick <fishwick@fish.cis.ufl.edu> To: simulation@ufl.edu Subject: RE: Virtual Reality vs. Simulation This is in response to some of Peter Leaback's comments about the relationships between virtual reality and computer simulation. In short, I believe that simulation and virtual reality have strong interconnections in that people creating a simulation model will want to use many of the input devices and environmental/behavioral factors developing within the area of virtual reality (i.e. the data glove, body suits, helmet mounted displays). There are many exciting possibilities for research in combined simulation modeling while taking into account human factors and research in virtual reality. The relationship between virtual reality and simulation can be best seen by seeing the different emphasis: SIMULATION: Emphasis is on modeling and analysis of time dependent complex phenomena (real or imaginary). VIRTUAL REALITY: Emphasis is on human factors and psychological effectiveness. Here are some comments (below).... Paul Fishwick U. of Florida --------------------------------------------------------------- >From: peterl@ibmpcug.co.uk (Peter Leaback) Newsgroups: sci.virtual-worlds Subject: RE: what is a virtual reality ? >>I know this is a reply to an old message, but here goes... >>What is the difference between a virtual reality and a simulation? My >>answer is consistency. >>A stick model of a water molecule is a simulation of a real water >>molecule, but if you jump into a swimming pool full of stick water >>molecules, you won't get wet. The stick water molecules have many >>inconsistances compared to real molecules, so when one trys to interact >>the stick molecules with real ones, you have problems. >>But if a man made up of stick model molecules jumps into that same >>swimming pool, he WILL get wet. The issue of "reality" is a function of the fidelity of input and output devices. One is, in effect, trying to simulate an environment, real or otherwise. >>Saying that a global weather simulation is also a virtual reality is >>*useless*, because the whole point of writing a global weather simulation >>is to extract information to compare with the real world.So the global >>weather simulation will *always* be thought of as a simulation. Simulation and virtual reality are not at odds -- Simulationists can *use* technologies within virtual reality to create better simulations. In addition -- a computer simulation need not be of a "real" physical phenomenon. A simulation can define a model of some process, possibly unrealistic. The output of the simulation is then validated against data of some sort. We can see, then, that one can define simulations not only of physical systems, but also of mental models (in AI) and futuristic galactical adventures. The validation of science fiction scenarios usually involves face validation where a model is good if it generates greater degrees of interest from players/audience. Simulation methods in modeling and analysis are useful when one is trying to model time varying, complex systems (real or otherwise). Paul Fishwick University of Florida ------------------------------ END OF SIMULATION DIGEST ************************