Title	Maintaining Semantic Consistency in Real-Time Collaborative Graphics Editing Systems
Author	Jiajun Bu, Bo Jiang, Chun Chen
Citation	Vol. 6  No. 4  pp. 57-61
Keywords	CSCW, real-time collaborative graphics design, semantic preservation, semantic expression.

Title	Continuity Analysis of Non-uniform Subdivision Surfaces
Author	Ahsan Ullah, Koichi Harada
Citation	Vol. 6  No. 4  pp. 52-56
Keywords	surface optimization, subdivision scheme, graphics.

Title	Induction of Global Rules Considering Schema Conflicts in Multi-database Systems
Author	Yufu Song, Zengyou He, Xiaofei Xu, Shengchun Deng
Citation	Vol. 6  No. 4  pp. 48-51
Keywords	Rules, Semantic Query Optimization, Multi-database Systems

Title	A Method for Retrieving and Building Structure of NLP Knowledge
Author	Elmarhmoy Ghada, El-Sayed Atlam, Masao Fuketa, Kazuhiro Morita, Jun-ichi Aoe
Citation	Vol. 6  No. 4  pp. 42-47
Keywords	Natural Language Processing, trie structure, Hierarchy.