From: scivw@hitl.washington.edu
Subject: DIGEST: Virtual-worlds Info Booth [05.21]
Date: September 18, 1997
Organization: Human Interface Technology Laboratory, U of Washington, Seattle



Virtual-worlds Info Booth Digest
volume 05, number 21

Contents:

INFO:  Where get I information about network virtual reality
INFO: Head mounted displays
REFS: Physical Constraints


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Toni Emerson                                         
Moderator, sci.virtual-worlds               

                      <scivw-request@hitl.washington.edu>
                http://www.hitl.washington.edu/people/diderot

---------------------------START OF DIGEST------------------------------ 

From: Kim Ki-Jun <kkjun@palgong.kyungpook.ac.kr>
Newsgroups: sci.virtual-worlds
Subject: INFO:  Where get I information about network virtual reality
Date: Tue, 02 Sep 1997 16:29:58 +0900
Organization: System Engineering Research Institute (SERI)
Message-ID: <340BC076.F545316@palgong.kyungpook.ac.kr>
Reply-To: kkjun@palgong.kyungpook.ac.kr


I read an article about network virtual reality in that many users can
share same space.  In that users effects each other.  Are there any
information about it?

Please mail to me.

Thanks.

[Many good places to start, however...I have a Distributed Virtual
Reality bibliography

http://www.hitl.washington.edu/kb/distvr/

and also a WWW page:
http://www.hitl.washington.edu/kb/distributedvr.html

-T.E.]

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

From: "Brad Burnett" <bdc@mailbag.com>
Newsgroups: sci.virtual-worlds
Subject: INFO: Head mounted displays
Date: 3 Sep 1997 19:02:03 GMT
Organization: BDC
Message-ID: <01bcb89c$9e8a3d40$1ab2adcd@vogmudet>
NNTP-Posting-Host: msn-1-11.binc.net

There does not seem to be much talk of head mounted displays
anymore. Has everyone given up on them because of the limited res.?


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

From: Kim Ki-Jun <kkjun@palgong.kyungpook.ac.kr>
Newsgroups: sci.virtual-worlds
Subject: REFS: Physical Constraints
Date: Thu, 18 Sep 1997 17:23:22 +0900
Organization: System Engineering Research Institute (SERI)
Message-ID: <3420E4F9.68420A87@palgong.kyungpook.ac.kr>
Reply-To: kkjun@palgong.kyungpook.ac.kr


I want to use physical constraints in a Virtual Environment. Gravity ,
Friction and Pushing.

Are there any related papers or books?

Please sene me e-mail.

Thank you.

Kim Ki-Jun <kkjun@palgong.kyungpook.ac.kr>

[Adachi, Y. (1993). Touch and Trace on the Free-Form Surface of Virtual
Object: IEEE 1993 Virtual Reality Annual International Symposium,
VRAIS '93. (pp. 162-168). IEEE Service Center.

Adachi, Y.; Kumano, T.; Ogino, K. (1995). Intermediate Representation
for Stiff Virtual Objects: Virtual Reality Annual International
Symposium, VRAIS '95. (pp. 203-210). IEEE Computer Society Press.

Burdea, G. (1996). Physical Constraints. In "Force and Touch Feedback for
Virtual Reality" (pp. 194-197). New York: John Wiley & Sons, Inc.

Iwata, H. (1990). Artifical Reality with Force-Feedback: Development
of Desktop Virtual Space with Compact Master Manipulator. Computer
Graphics, 24(4), 165-170.

Keller, H., Stolz, H., Ziegler, A. and Braunl, T. (1995, July).  Virtual
mechanics simulation and animation of rigid body systems with
AERO. Simulation, 65(1), pp. 74-9.

Papper, M. and Giganete, M. (1993).  Using Physical Constraints in a
Virtual Environment.  In "Virtual Reality Systems" (pp. 107-118).
Orlando, FL: Academic Press.

Found good friction citation, but it's in Japanese:

Yoshikawa, T. and Okamoto, T.  (1996, May).  Display of operating feel
of virtual tools in rigid frictional contact with
environment. Transactions of the Society of Instrument and Control
Engineers, 32(5), pp. 741-9.

Authors are affiliated with Kyoto University, Japan.

Searching on friction I found citations in robotics and telepresence,
like the following:

Siira, J. and Pai, D. K. (1996). Haptic texturing-a stochastic
approach. In Proceedings of 1996 IEEE International Conference on
Robotics and Automation (pp. 557-62, vol.1). New York, NY: IEEE.

Pai's home page at the University of British Columbia:
http://www.cs.ubc.ca/spider/pai/home.html

Regarding gravity, I searched my bibliography
(http://www.hitl.washington.edu/kb/meta) just on that keyword and came
up with:

Duncan, K. M.; Harm, D. L.; Crosier, W. G. ; Worthington,
J. W. (1993). Using Virtual Environment Technology for Preadapting
Astronauts to the Novel Sensory Conditions of Microgravity: 1993
Conference on Intelligent Computer-Aided Training and Virtual
Environment Technology (ICAT/VET). (pp. 397-401). NASA.

Ray, D. M. ; Van Chau, M. N. (1994). Virtual Environment Application
with Partial Gravity Simulation: ISMCR'94: Topical Workshop on Virtual
Reality. (pp. 114-124). NASA.

Related terms would be "dynamics", "collision detection",...broader
terms are "kinematic modeling" and "haptics" (very broad).

For general haptic links, a good way to start check the Haptics Web:

http://haptic.mech.nwu.edu

There is a database of researchers, links list by research category as
well as a Online Haptics Library.


-T.E.]

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