Program Co-Chair, 9th International Conference on Mobile Data Management (MDM 2008), Beijing, China, May 2008. (with X. Meng and S. Grumbach)
Program Co-Chair, IEEE International Conference on e-Business Engineering (ICEBE 2007), Hong Kong, China, October 2007. (with S.C. Cheung and M. Lyu)
Program Co-Chair, 4th International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services (Mobiquitous 2007), Philadelphia, PA, USA, July 2007. (with R. Kravets and A. Dey)
Keynote Address, “Data Management Issues in Context-Aware Computing”, National Database Conference (NDBC 2006), Guangzhou, China, November 2006.
Area Coordinator, Pervasive, Mobile and P2P Systems, International Conference on Service-Oriented Computing (ICSOC 2005), Amsterdam, The Netherlands, December 2005.
Program Co-Chair, IEEE International Conference on e-Business Engineering (ICBE 2005), Beijing, China, October 2005. (with F. Lau and X. Meng)
Invited Speech, "Context Awareness: a Practitioner's Perspective", IEEE International Workshop on Ubiquitous Data Management (UDM 2005), in conjunction with ICDE 2005, Tokyo, Japan, April 2005.
Steering Committee Member, IEEE International Conference on Mobile Data Management (MDM). 2004 -.
Workshops Co-Chair, IEEE International Conference on Pervasive Computing and Communications (PerCom 2004), Orlando, FL, USA, March 2004. (with F. Lau)
Conference Co-Chair, IEEE International Conference on Mobile Data Management (MDM 2004), Berkeley, CA, USA, January 2004. (with A. Joshi)
Panelist, National Science Foundation, Information and Intelligent Systems Division, 2004.
Panel Chair, “Mobile Commerce: Vision and Challenges”, IEEE/IPSJ International Symposium on Applications and the Internet (SAINT 2002), Nara City, Japan, January 2002.
Program Co-Chair, 2nd ACM International Workshop on Mobile Commerce (WMC 2002), in conjunction with Mobicom 2002, Atlanta, GA, USA, September 2002. (with O. Wolfson)
Panelist:
- "Pervasive Computing: Reality or Illusion", IEEE International Conference on Pervasive Computing and Communications (PerCom 2003), Dallas-Fort Worth, TX, USA, March 2003.
- “Ubiquitous Connectivity: Hype, Reality and Implications for Mobile Data Management”, International Conference on Mobile Data Management (MDM 2001), Hong Kong, China, January 2001.
- “Barriers to Pervasive Computing”, ICPP International Workshop on Pervasive Computing, Toronto, Canada, August 2000.
Guest Editor:
- Special Section for Selected Papers of ICEBE 2007, Journal of Service Oriented Computing and Applications, 2009. (with S. C. Cheung and M. Lyu)
- Special Issue on Mobile and Pervasive Commerce, ACM/Kluwer Mobile Networks and Applications (MONET), December 2004. (with R. Jain and M. Viveros)
- Joint Special Issues on Context-Aware Computing, IEEE Pervasive Computing and IEEE Wireless Communications magazines, 2002. (with G. Abowd, M. Ebling, H. Gellersen, and G. Hunt)
Program Committee Member:
- 28th International Symposium on Reliable Distribued Systems (SRDS 2009), Niagara Falls, New York, USA, September 2009.
- 8th International ACM Workshop on Data Engineering for Wireless and Mobile Access (MobiDE 2009), in conjunction with SIGMOD/PODS 2009, Providence, Rhode Island, USA, June 2009.
- 29th International Conference on Distributed Computing Systems (ICDCS 2009), Montreal, Canada, June 2009.
- 6th International ACM Workshop on Data Engineering for Wireless and Mobile Access (MobiDE 2007), in conjunction with SIGMOD/PODS 2007, Beijing, China, June 2007.
- 3rd International Conference on Mobile and Ubiquitous Systems: Networking and Services (Mobiquitous 2006), San Jose, CA, USA, July 2006.
- IEEE International Conference on Mobile Data Management (MDM 2006), Nara, Japan, May 2006.
- 8th International Workshop on Mobility in Databases and Distributed Systems (MDDS 2005), in conjunction with DEXA 2005, Copenhagen, Denmark, August 2005.
- IEEE International Conference on e-Commerce Technology (CEC 2005), Munich, Germany, July 2005.
- International Conference on Mobile and Ubiquitous Systems: Networking and Services (Mobiquitous 2005), San Diego, CA, USA, July 2005.
- 4th International ACM Workshop on Data Engineering for Wireless and Mobile Access (MobiDE 2005), in conjunction with SIGMOD/PODS 2005, Baltimore, MD, IL, USA, June 2005.
- IEEE International Conference on Mobile Data Management (MDM 2005), Ayia Napa, Cyprus, May 2005.
- IEEE International Workshop on Ubiquitous Data Management (UDM 2005), in conjunction with ICDE 2005, Tokyo, Japan, April 2005.
- IEEE Workshop on Mobile Computing Systems and Applications (WMCSA 2004), English Lake District, UK, December 2004.
- 7th International Workshop on Mobility in Databases and Distributed Systems (MDDS 2004), in conjunction with DEXA 2005, Zaragoza, Spain, August - September 2004.
- IEEE International Conference on Pervasive Computing and Communications (PerCom 2004), Orlando, FL, USA, March 2004.
- ACM Symposium on Applied Computing (SAC 2004), Nicosia, Cyprus, March 2004.
- International Conference on Electronic Commerce (ICEC 2003), Pittsburgh, PA, USA, October 2003.
- IEEE Workshop on Mobile Computing Systems and Applications (WMCSA 2003), Santa Cruz, CA, USA, October 2003.
- 3rd ACM International Workshop on Mobile Data Engineering (MobiDE 2003), in conjunction with MobiCom 2003, San Diego, CA, USA, September 2003.
- International Workshop on Mobile Distributed Computing (MDC 2003), Providence, RI, USA, May 2003.
- IEEE/IPSJ International Symposium on Applications and the Internet (SAINT 2003), Orlando, FL, USA, January 2003.
- International Conference on Mobile Data Management (MDM 2003), Melbourne, Australia, January 2003.
- IEEE Workshop on Mobile Computing Systems and Applications (WMCSA 2002), Callicoon, NY, USA, June 2002.
- International Conference on Mobile Data Management (MDM 2002), Singapore, January 2002.
- ACM International Workshop on Mobile Commerce (WMC 2001), in conjunction with Mobicom 2001, Rome, Italy, July 2001.
- IEEE Workshop on Mobile Computing Systems and Applications (WMCSA 2000), Monterey, CA, USA, December 2000.