Steering Committee, 4th Conference on Geosensor Networks (GSN4.0), Melbourne, Australia, July 2011.
Steering Committee, 3rd Conference on Geosensor Networks (GSN3.0), Oxford, UK, July 2009.
PC and General Co-Chair, 1st International Workshop on Privacy-Aware Location-Based Mobile Services (PALMS'07), in conjunction with Mobile Data Management, Mannheim, Germany, May 2007.
PC and General Co-Chair, 14th Conference ACM-GIS 2006, Washington DC, November 10-11 2006.
PC and General Co-Chair, 2nd Workshop on Geosensor Networks (GSN2.0), Boston, MA, Oct 1-3 2006.
Co-Chair, Workshop "Mobile Location-Aware Sensor Networks", in conjunction with Mobile Data Management, Nara, Japan, May 13 2006.
2013
PC, 39th International Conference on Very Large Data Bases (VLDB 2013), August 26-29 2013, Riva di Garda, Italy
2012
PC, 20th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL GIS), November 6st to 9th Redondo Beach, CA
PC, 38th International Conference on Very Large Data Bases (VLDB 2012), August 28-20 2012, Istanbul, Turkey
PC, 13th International Conference on Mobile Data Management (MDM 2012) to be held July 23-26, 2012 in Bangalore, India
PC, 24th International Scientific and Statistical Database Systems (SSDBM 2012) to be held June 25-27, 2012, Crete, Greece
PC, IEEE International Conference on Data Engineering (ICDE 2012) to be held April 1-5, 2012 in Washington, DC, USA
2011
PC, 19th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL GIS), November 1st to 4th in Chicago, Illinois, USA.
PC, 2nd International Workshop on GeoStreaming (IWGS), in conjunction with the 19th ACM SIGSPATIAL GIS 2011, November 1st to 4th in Chicago, Illinois, USA.
PC, Workshop "Cognitive Engineering for Mobile GIS", in conjunction with COSIT 2011, Belfast, Maine, September 2011
PC, 37th International Conference on Very Large Data Bases (VLDB), August 2011, Seattle, WA USA
PC, Workshop "Data Management for Sensor Networks" (DMSN), in conjunction with VLDB, Seattle, WA, 2011
PC, 23th International Conference on Scientific and Statistical Database Management (SSDBM 2010), July 2-22, Portland, OR.
PC, 17th International Conference on Mobile Data Management (MDM 2011), June 6-9 2011, Lulea, Sweden
PC, 18th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM GIS), November 2-5 2010, San Jose, CA
PC, 1st International Workshop on GeoStreaming, in conjunction with ACM GIS, November 2-5 2010, San Jose, CA
PC, International Conference on Mobile Data Management (MDM 2010), May 23-26 2010, Kansas City, Missouri
PC, International Conference on Scientific and Statistical Database Management (SSDBM 2010), June 30 – July 2, Heidelberg, Germany.
PC, 17th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM GIS) 2009, Nov, Seattle, WA.
PC, 35th International Conference on Very Large Data Bases (VLDB 2009), August 24-28 2009, Lyon, France.
PC, Workshop "Data Management for Sensor Networks" (DMSN), in conjunction with VLDB, Lyon, France, August 2008
PC, 1st International Workshop on "Data Warehousing and Knowledge Discovery from Sensors and Streams" (DKSS 2009), held in conjunction with the 5th International Conference on Distributed Computing in Sensor Systems (DCOSS 2009), Marina del Rey, CA, June 8-10 2009.
PC, 10th International Conference Mobile Data Management (MDM 2009), May 18-21 2009, Taipei, Taiwan.
PC, MDM-Workshop Indoor Spatial Awareness (MDM 2009), May 18 2009, Taipei, Taiwan.
PC, 16th International ACM Conference on Geographic Information Systems (ACM-GIS 2008), Los Angeles, CA, Nov 5-7 2008.
PC, 5th International Workshop Data Management in Sensor Networks, in conjunction with VLDB, Auckland, New Zealand, Aug 25 2008.
PC, 20th International Conference on Scientific and Statistical Databases (SSDBM 2008), Hong Kong, China, July (tentative), 2008.
PC, 7th ACM International Workshop on Data Engineering for Mobile and Wireless Access (MobiDE08), in conjunction with SIGMOD, Vancouver, Canada, June 2008.
PC, 24th International Conference on Data Engineering (ICDE 2008), Cancun, Mexico, April 7-11, 2008.
PC, Environmental Sensor Networks (ESNs) Workshop, in conjunction with 18th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Athens, Greece, September 7 2007.
PC, Workshop "Data Management for Sensor Networks", in conjunction with VLDB, Vienna, Austria, September 2007.
PC, 33rd International Conference Very Large Data Bases (VLDB), Vienna, Austria, September 2007.
PC, 19th International Conference Scientific and Statistical Database Systems (SSDBM), Banff, Alberta, Canada, July 2007PC, 23rd International Conference on Data Engineering (ICDE 2007), Istanbul, Turkey, April 17-20 (tentative), 2007.
PC, 6th International Symposium on Web and Wireless Geographical Information Systems (W2GIS 2006), December 4 ~ 5, 2006, Hong Kong
PC, Workshop "Mining Spatial and Spatio-Temporal Data" (SSTDM), Hong Kong, December 18, 2006.
PC, Workshop on Middleware for Sensor Networks, in conjunction with 7th ACM/IFIP/USENIX Middleware Conference, Melbourne, Australia, Nov 2006.
PC, 3rd VLDB-Workshop "Data Management for Sensor Networks" (DMSN'06), Seoul, Korea, Sept 11, 2006.
PC, 1st Workshop on Mobile Geospatial Augmented Reality (AR), May 29-30 2006, Banff, Alberta, Canada.
PC, International Workshop on Networked Sensing Systems (INSS), Chicago, USA, May 31-June 2 2006.
PC, 2nd VLDB-Workshop "Data Management for Sensor Networks", Trondheim, Norway, September 2005.
PC, 5th International Workshop on Web and Wireless GIS (W2GIS05), Lausanne, Switzerland, December 15-16 2005
PC, ACM 13th International Symposium of Advances in Geographic Information Systems (ACM-GIS 2005).
PC, 4th International ACM Workshop on Data Engineering for
Wireless and Mobile Access (MobiDE `05), in conjunction
with SIGMOD, Baltimore, MD, June 12th 2005.
PC, "Geosensor Networks – from research to applications“, June 23rd – 24th, Münster GI-Days, Germany, 2005.
PC, Symposium on Spatio-Temporal Databases (SSTD'05), Angra, Brazil, August 22-24 2005.
PC, Conference Scientific and Statistical Database Management, Santa Barbara, CA, July 2005.
PC, International Workshop on Networked Sensing Systems, Mission Valley Marriott, San Diego, CA, USA, June 27 & 28 2005.
PC, VLDB-Workshop "Data Management for Sensor Networks", Toronto, Canada, August 2004.
PC, ACM-GIS 2004
Steering Committee, Conference Scientific and Statistical Database Management, Santorini, Greece, July 2004.
Invited Panelist, National Science Board Workshop "Policies for Long-Lived Data Collections",
Arlington, VA, March 23 2004.
2003
Invited Session Chair, Interface
2003, "Statistical methods for compressing and querying
data in large databases or data streams",
Salt Lake City, UT, March 15 2003
2002
PC, ACM-GIS 2002
Invited Participant, NRC Workshop “Coping with Increasing Demands on Government Data Centers”, 2002