August 1, 2010, I relocated to Aarhus University. Thus, I no longer maintain this website. Please see instead my Aarhus website.
My professional interests include a variety of aspects of data management. Since the late 80's, much of my research has been concerned with aspects of temporal, spatial, and spatiotemporal databases, including data modeling, database design, data models and query languages, efficient query processing, and systems architectures. In recent years, my research has also covered aspects of ubiquitous data management and data management for mobile computing and services.
Affiliations
August 1, 2010, I became a part-time employee in the Department of Computer Science at Aalborg University, where I am a member of the research group that covers database and programming technologies.
During the late 1980s and the 1990s, I was at the computer science departments at University of Arizona and University of Maryland for a total of about five years. From September 2008 to August 2009, I was a Visiting Scientist at Google, Mountain View, working in the structured data research group headed by Alon Halevy.
Until August 1, 2010, I directed Center for Data-intensive Systems (Daisy; with Torben Bach Pedersen as co-director), which has as its focus to conduct research and offer research training within its area. In particular, Daisy emphasizes collaboration with other computer scientists, practitioners, and scientists from other disciplines.