Dr. Xu's research interest lies in data management for various networked systems including mobile networks, wireless sensor networks, and Internet systems. He has more than 100 publications in these areas as edited books and proceedings, invited book chapters, and technical papers in referred journals and conferences including ACM TODS, SIGMOD, MobiSys, IEEE ICDE, INFOCOM, ICDCS, ToN, TKDE, TPDS, and VLDBJ.

Ongoing Projects:

• FlashTX: Transaction Management for Flash-based Database Systems: Protocols, Implementations and Optimizations (PI, RGC/GRF, HKBU211510, 2010-2013)
• QUPOS: Query Processing in Flash-Based Storage-Centric Sensor Networks (PI, RGC/GRF, HKBU210808, 2009-2011)

• DEFACTO: Data-Centric Filter Management and Routing Optimization for Distributed Monitoring Systems (PI, RGC/CERG, HKBU211307, 2008-2010)
• iPDA: Privacy-Preserving Location-based Data Access in Mobile Environments (PI, RGC/CERG, HKBU211206, 2006-2009)
• ECOQUAD: Energy-Conserving Quality-Aware Data Collection in Wireless Sensor Networks (PI, RGC/CERG, HKBU211505, 2005-2008)