One full paper authored by Ziyuan Wang, myself, and Rao Kotagiri on Robust Traffic Merging Strategies for Sensor-Enabled Cars Using Time Geography has been accepted for ACM SIGSPATIAL GIS 2009. The acceptance rate for full papers was 20.5%.
One short paper authored by Muhammad Umer, Egemen Tanin, and myself on Opportunistic Sampling in Wireless Sensor Networks has been accepted for ACM SIGSPATIAL GIS 2009.
The full citations are under my publications.