Workflow-driven design chain management for collaborative engineering of technology-intensive product

Master'sMASTER OF ENGINEERIN

Managing dynamic shared state in virtual space for collaborative design

Conference Name:6th International Conference on Computer Supported Cooperative Work in Design. Conference Address: LONDON, CANADA. Time:JUL 12-14, 2001.In building the virtual world for distributed collaborative design, the senses of sharing the world and cooperation between physically distributed hosts and users are usually achieved by maintained dynamic shared state. To make those events that happen in another physical location to be virtually "seen" by other participants, communication through network is indispensable. Because of the limited network bandwidth and limited CPU resources reserved for communication in a virtual world simulation, reducing communication traffic is a critical issue. In this paper, we present an efficient model, improved "Lazy model", to reduce communication for maintaining dynamic shared state. After that, we propose an approximate method using AOI, Area of Interest, to enhance the implementation of this model