I am involved in the following activities:
| 28-30 Sept., 2009 | Program Co-Chair of IEEE International Conference on Ubi-media Computing (U-Media) 2009, Aizu - Japan. |
| 28-30 Sept., 2009 | Workshop Co-Chair and Program Committee of International Workshop on Interactive Digital Entertainment Technologies (IDET) 2009, Aizu - Japan. |
| 17-19 June, 2009 | Program Committee of Computer Animation and Social Agents 2009 Conference, Amsterdam - The Netherlands. |
| 23-26 Mar., 2009 | Program Committee of International Conference on Computer Supported Education (CSEDU) 2009, Lisboa - Portugal. |
| 14-18 Mar., 2009 | Program Committee of IEEE Virtual Reality 2009, Lafavette - Louisiana. |
| 27-29 Oct., 2008 | Program Committee of ACM Symposium on Virtual Reality Software and Technology (VRST) 2008, Bordeaux - France. |
| 1-3 Sept., 2008 | Program Committee of Computer Animation and Social Agents 2008 Conference, Seoul - Korea. |
| 20-22 Aug., 2008 | General Co-Chair and Program Committee of International Conference on Web-based Learning (ICWL) 2008, Jinhua - China. |
| 15-16 July, 2008 | Workshop Co-Chair and Program Committee of International Workshop on Interactive Digital Entertainment Technologies (IDET) 2008, Lanzhou - China. |
| 8-12 Mar., 2008 | Program Committee of IEEE Virtual Reality 2008, Reno - Nevada. |
| 10-12 Jan., 2008 | Program Committee of IEEE International Workshop on Digital Entertainments, and Creative Technology (DECT) 2008, Las Vegas. |
| 5-7 Nov., 2007 | Program Committee of ACM Symposium on Virtual Reality Software and Technology (VRST) 2007, Newport Beach - California. |
| 15-18 Oct., 2007 | Program Committee of CAD/Graphics 2007, Beijing - China. |
| 14-16 Sept., 2007 | Program Co-Chair of International Conference on Entertainment Computing (ICEC) 2007, Shanghai - China. |
| 22-24 Aug., 2007 | Program Committee of International Conference on Image and Graphics, Chengdu - China. |
| 15-17 Aug., 2007 | Conference Co-Chair and Program Committee of International Conference on Web-based Learning (ICWL) 2007, Edinburgh - United Kingdom. |
| 16-17 Aug., 2007 | Program Committee of Workshop on Blended Learning (WBL) 2007, Edinburgh - United Kingdom. |
| 11-13 June, 2007 | Program Committee of Computer Animation and Social Agents 2007 Conference, Hasselt - Belgium. |
| 11-13 June, 2007 | Program Committee member of Edutainment 2007, Hong Kong. |
| 10-14 Mar., 2007 | Program Committee of IEEE Virtual Reality 2007, Charlotte - North Carolina. |
| 29 Nov. - 1 Dec., 2006 | Program Co-Chair of The 16th International Conference on Artificial Reality and Telexistence (ICAT) 2006, Hangzhou - China. |
| 28-30 Nov., 2006 | Program Committee of CyberWorlds 2006, Lausanne - Switzerland. |
| 1-3 Nov., 2006 | Program Committee of ACM Symposium on Virtual Reality Software and Technology (VRST) 2006, Cyprus. |
| 19-21 July, 2006 | Program Area Co-Chair and Program Committee of International Conference on Web-based Learning (ICWL) 2006, Penang - Malaysia. |
| 5-7 July, 2006 | Invited Speaker and Program Committee of Computer Animation and Social Agents 2006 Conference, Geneva - Switzerland. |
| 26-28 June, 2006 | Program Committee member of Computer Graphics International (CGI) 2006, Zhejiang University - China. |
| 8-10 May, 2006 | Program Committee member of Eurographics Symposium on Virtual Environments (EGVE) 2006, Lisbon - Portugal. |
| 16-18 April, 2006 | Publicity Co-Chair and Program Committee member of Edutainment 2006, Zhejiang University - China. |
| 7-10 Dec., 2005 | Program Committee of CAD/Graphics Conference 2005, Hong Kong. |
| 7-9 Nov., 2005 | Conference Co-Chair of ACM Symposium on Virtual Reality Software and Technology (VRST) 2005, Monterey - California. |
| 17-19 October, 2005 | Conference Co-Chair of Computer Animation and Social Agents 2005 Conference, Hong Kong. |
| 12-14 Oct., 2005 | Program Committee member of Pacific Graphics Conference 2005, Macau - China. |
| 31 July - 4 Aug., 2005 | Technical Track Subcommittee of ACM SIGGRAPH 2005 Web Program, Los Angeles. |
| 31 July - 3 Aug., 2005 | Program Co-Chair of International Conference on Web-based Learning (ICWL) 2005, Hong Kong. |
| 22-24 June, 2005 | Program Committee member of Computer Graphics International (CGI) 2005, Stony Brook - New York. |
| 13-15 Dec., 2004 | Program Committee member of IEEE MSE 2004, Miami - Florida. |
| 10-12 Nov., 2004 | Program Co-chair of ACM Symposium on Virtual Reality Software and Technology (VRST) 2004, Hong Kong. |
| 6-8 Oct., 2004 | Program Committee member of Pacific Graphics Conference 2004, Seoul - Korea. |
| 1-3 Sept., 2004 | Program Committee member of Eurographics Conference 2004, Grenoble - France. |
| 8-11 Aug., 2004 | Program Co-chair of International Conference on Web-based Learning (ICWL) 2004, Beijing - China. |
| 16-19 June, 2004 | Program Committee member of Computer Graphics International (CGI) 2004, Crete - Greece. |
| 15-18 Dec., 2003 | Session Co-Chair of IEEE Pacific-Rim Conference on Multimedia 2003, Singapore. |
| 10-12 Dec., 2003 | Program Committee member of IEEE MSE 2003, Taichung - Taiwan. | 29-31 Oct., 2003 | Program Committee member of CAD/Graphics Conference 2003, Macao - China. |
| 8-10 Oct., 2003 | Program Committee member of Pacific Graphics Conference 2003, Alberta - Canada. |
| 1-3 Oct., 2003 | Program Committee member of ACM Symposium on Virtual Reality Software and Technology (VRST) 2003, Osaka - Japan. |
| 26-30 Sept., 2003 | Program Committee member of International Conference on Intelligent Multimedia Computing and Networking 2003, Cary - North Carolina. |
| 9-11 July, 2003 | Program Committee member of Computer Graphics International (CGI) 2003, Tokyo - Japan. |
| 11-13 Nov., 2002 | Organization Co-Chair and Program Committee member of ACM Symposium on Virtual Reality Software and Technology (VRST) 2002, Hong Kong. |
| 9-11 Oct., 2002 | Program Committee member of Pacific Graphics Conference 2002, Beijing - China. |
| 25-27 Sept. 2002 | Program Committee member of IASTED International Conference on Information Systems and Databases 2002, Tokyo - Japan. |
| 23-26 Sept., 2002 | Program Committee member of Chinagraph 2002, Beijing - China. |
| 20-23 Aug., 2002 | Far East & Australia Publicity Coordinator of Very Large DataBase Conference (VLDB) 2002, Hong Kong. |
| 1-5 July, 2002 | Program Committee member of Computer Graphics International (CGI) 2002, Bradford - UK. |
| 8-12 Mar., 2002 | Program Committee member of The International Workshop on Intelligent Multimedia Computing and Networking 2002, North Carolina - USA. |
| 16-19 Jan., 2002 | Program Committee member of The International Game Technology Conference and IDEA Expo (GTEC) 2002, Hong Kong. |
| 15-17 Nov., 2001 | Program Committee member of ACM Symposium on Virtual Reality Software and Technology (VRST) 2001, Banff - Canada. |
| 16-18 Oct., 2001 | Program Committee member of Pacific Graphics Conference 2001, Tokyo - Japan. |
| 3-6 July, 2001 | Publication Chair and Program Committee member of Computer Graphics International (CGI) 2001, Hong Kong. |
| 25-28 April, 2001 | Program Committee (Industrial Section) member and Registration Chair of IFIP 2.6 Working Conference on Database Semantics (DS-9) 2001, Hong Kong. |
| 18-20 April, 2001 | Program Committee member of The International Conference on Database Systems for Advanced Applications (DASFAA) 2001, Hong Kong. |
| 5-15 April, 2001 | Visiting - Bell Labs Research China at Beijing. |
| 18-21 Jan., 2001 | Program Committee member of The First International Game Technology Conference and IDEA Expo (GTEC) 2001, Hong Kong. |
| 11-13 Dec., 2000 | Local Arrangements Co-chair of International Conference on Algorithms and Architecture for Parallel Processing 2000, Hong Kong. |
| 23-25 Oct., 2000 | Program Committee member of ACM Symposium on Virtual Reality Software and Technology (VRST) 2000, Korea. |
| 3-5 Oct., 2000 | Organizing Committee and Program Committee member of Pacific Graphics Conference 2000, Hong Kong. |
| 1-30 July, 2000 | Visiting Researcher - Microsoft Research China at Beijing. |
| 21-22 June, 2000 | Tutorial Chair and Program Committee member of The International Database Symposium on Mobile, XML and Post-relational Databases (IDS) 2000, Hong Kong. |
| 19-20 June 2000 | Program Committee member of The International Conference on Web Information Systems Engineering (WISE) 2000, Hong Kong. |