<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kangseok Kim</style></author><author><style face="normal" font="default" size="100%">Geoffrey C. Fox</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modeling, Simulation, and Practice of Floor Control for Synchronous and Ubiquitous Collaboration</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">CGL</style></keyword><keyword><style  face="normal" font="default" size="100%">Floor control</style></keyword><keyword><style  face="normal" font="default" size="100%">Human-computer interaction</style></keyword><keyword><style  face="normal" font="default" size="100%">Mobile devices</style></keyword><keyword><style  face="normal" font="default" size="100%">synchronous collaboration</style></keyword><keyword><style  face="normal" font="default" size="100%">Ubiquitous collaboration</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">02/02/2009</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://grids.ucs.indiana.edu/ptliupages/publications/kakim-XGSP-Floor.pdf</style></url></web-urls></urls><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">With the advances in a variety of software/hardware technologies and wireless
networking, there is coming a need for ubiquitous collaboration which allows people to access
information systems independent of their access device and their physical capabilities and to
communicate with other people in anytime and anywhere. Current virtual conferencing systems
lack support for ubiquitous collaboration. As the number of collaborators with a large number of
disparate access devices increases, mechanisms for dealing with consistency in an application
shared among collaborators will have to be considered in an unambiguous manner. In this paper
we address issues related in building a framework for synchronous and ubiquitous collaboration.
First, to make ubiquitous collaboration more promising, we briefly present a framework built on
heterogeneous (wire, wireless) computing environment and a set of session protocols defined in
XML to provide a generic solution for controlling sessions and participants’ presences in
collaboration. Second, to provide a solution for maintaining shared state consistency at
application level, we present a floor control mechanism which coordinates activities occurred in
synchronously cooperating applications being shared among collaborators. The mechanism with
strict conflict avoidance and non-optimistic locking strategy allows all participants to have the
same views and data at all times. Finally, we show modeling of XGSP-Floor control mechanism
and formal verification to prove the correctness of the modeled control mechanism.</style></abstract></record></records></xml>