Additional Invited Talks
- “On Spatial Keyword Querying," Microsoft Research Asia, Beijing, China, July 12, 2012.
- “On the Integration of Location into Web Querying,” Department of Computer Science, University of Illinois at Chicago, IL, USA, October 31, 2011.
- “Internet Querying with a Geographical Dimension,” Computer Science and Technology, Tsinghua University, Beijing, China, October 24, 2011.
- "Querying for Spatial Web Objects," Chinese Academy of Sciences, Beijing, China, April 23, 2011.
- "Towards Hyper-Local Web Querying," Department of Computer Science, Aarhus University, Aarhus, Denmark, January 28, 2011.
- "Acceptance Lecture—the Villum Kann Rasmussen Award for Technical and Scientific Research 2011," Aarhus University, Aarhus, Denmark, January 24, 2011.
- "Inaugural Lecture," Aarhus University, Aarhus, Denmark, May 25, 2010.
- "Geo-Spatial Context on the Mobile Internet," University of South Denmark, Odense, Denmark, January 29, 2010.
- "Privacy for Spatial Queries and Data," Chinese Academy of Sciences, Beijing, China, October 16, 2009.
- "Privacy for Spatial Queries and Data," Hong Kong University of Science and Technology, Hong Kong, China, October 12, 2009.
- "Enabling Geo-Spatial Context on the Mobile Internet," Aarhus University, Århus, Denmark, September 25, 2009.
- "Streamspin: User-Generated Mobile Services," Seoul National University, Seoul, South Korea, October 7, 2008.
- "Enabling Mobile 2.0: Data Management for User-Generated Services," Microsoft Research, Seattle, WA, USA, August 6, 2008.
- "R-Tree and B-Tree Based Indexing of Moving Objects," Hewlett-Packard Labs, Palo Alto, CA, USA, March 7, 2008.
- "Streamspin: User-Generated, Geo-Social Mobile Services," Yahoo! Research, Santa Clara, CA, USA, March 5, 2008.
- "Streamspin: Mobile Services As User-Generated Content," Google, Mountain View, CA, USA, March 4, 2008.
- "Indexing the Current and Near-Future Locations of Moving Objects," Oracle Corporation, Redwood City, CA, USA, March 3, 2008.
- "Streamspin: Enabling Mobile 2.0," Norwegian University of Science and Technology, Trondheim, Norway, September 4, 2007.
- "Concepts in the Indexing of Moving Objects," Norwegian University of Science and Technology, Trondheim, Norway, September 4, 2007.
- "Streamspin: Enabling Mobile 2.0," Nanyang Technological University, Singapore, July 29, 2007.
- "Streamspin: Enabling Mobile 2.0," National University of Singapore, Singapore, July 27, 2007.
- "To Be For Mobile Services What YouTube Is For Video," University of Melbourne, Melbourne, Australia, July 25, 2007.
- "Streamspin: Enabling Mobile 2.0," University of New South Wales, Sydney, Australia, July 23, 2007.
- "Location-Based Services and Web 2.0," ApEx Seminar on location-based services, Aalborg University, June 13, 2007.
- "Research in Mobile Services at Aalborg University," IKT Forum, Aalborg, Denmark, August 25, 2005 (in Danish).
- "Traffic Information of the Future," Danish Broadcasting Corporation, Søborg, Denmark, May 28, 2004 (in Danish).
- "Conceptual Modeling of Spatio-Temporal Databases," Meeting on Technology for a National Geo-Database Infrastructure, Siena, Italy, September 4, 2003.
- "DataManagement Support for Location-Based Services: APrivate-Public Partnership," Telenor Research, Fornebu, Oslo, Norway, December 5, 2002.
- "Location Data Management Issues in Pervasive Computing," Telenor Research, Fornebu, Oslo, Norway, December 5, 2002.
- "Fremtidens mobile services – eksempel på et samarbejdsprojekt," Aalborg Universitets Kontaktråd, Aalborg, Denmark, October 8, 2002.
- "Towards Virtual Worlds and Augmented Realities: A Research Agenda," Second International Workshop on Research Directions in Mobile Communications and Services, Grimstad, Norway, September 26, 2002.
- "Data Management for Location-Based Services," Department of Computer and Information Science, Norwegian University of Science and Technology, September 10, 2002.
- "Data Modeling and Nearest-Neighbor Querying for Network-Constrained Moving Objects," School of Computing, National University of Singapore, July 15, 2002.
- "Temporal Data Models and Query Languages," School of Computing, National University of Singapore, July 11 and 12, 2002.
- "Indexing the Current and Anticipated Future Positions of Moving Objects," School of Computing, National University of Singapore, July 8, 2002.
- "Data Management for Location-Based Services," School of Computing, National University of Singapore, July 1, 2002.
- "Database Research at Aalborg University," Seminar on Methods for Software Development and Open Systems, Grimstad, Norway, April 24, 2002.
- "Data Representation and Indexing in Location-Enabled M-Services," National Science Foundation Workshop On Context-Aware Mobile Database Management, Brown University, Providence, RI, USA, January 24–25, 2002.
- "Research Issues in Mobile Data Management," Oracle Corporation, Nashua, NH, USA, January 22, 2002.
- "Mobile E-Services," Nykredit Data, December 18, 2001.
- "Research Directions in Location-Based Services—a Database Perspective," International Workshop on Research Directions in Mobile Communication and Computing, Grimstad, Norway, October 22, 2001.
- "Business Intelligence Research at Aalborg University," Acinta Business Intelligence Meeting, Copenhagen, August 20, 2001.
- "A Database Perspective on Location-Based Services," Agder University College, Grimstad, Norway, August 7, 2001.
- "Research Challenges in Wireless Information Management," Workshop on Wireless Information Management, Vilnius, Lithuania, June 10–13, 2001.
- "Location-Based Services—A Database Perspective," Workshop on Location-Based Services, Aalborg, Denmark, June 7–8, 2001.
- "Temporal Databases," Center for Linguistics, Aalborg University, October 31, 2000.
- "Themes and Challenges in Temporal Databases," MobIS'2000, Siegen, Germany, October 12, 2000.
- "Mobile E-Services and Business Intelligence," ITudveksling, Nouhauz, Aalborg, September 28, 2000.
- "Management of Temporal Data—with Focus on the Support for 'now'," Seminar on Temporal and Spatial Data Management, Kort & Matrikelstyrelsen, Copenhagen, September 7, 2000.
- "Indexing Moving Objects—a Database Perspective," National Science Foundation/Army Research Office Workshop on Motion Algorithms, Duke University, August 7, 2000.
- "Business Intelligence," MMT Program, Aalborg University, Aalborg, Denmark, June 17, 2000.
- "Indexing Structures for Temporal and Spatio-Temporal Data," DHI Water & Environment, Hørsholm, Denmark, May 30, 2000.
- "Temporal Data Management," Oracle, Ballerup, Denmark, May 30, 2000.
- "Indexing of On-Line Moving Objects," University of Cardiff, Wales, May 26, 2000.
- "Indexing On-Line Moving Objects—A Foundation for New E-Services," Department of Computer Science, Aalborg University (Internet Technology Seminar Series), April 26, 2000.
- "Data Warehousing," Nykredit Corporation, Copenhagen, Denmark, April 10, 2000.
- "Data Warehousing," Nykredit Data Corporation, Aalborg, Denmark, April 4, 2000.
- "Indexing the Present and Future Positions of Moving Objects," IT University of Copenhagen, Copenhagen, Denmark, March 15, 2000.
- "Dynamic Data Warehousing," Aalborg University, Aalborg, Denmark, March 14, 2000.
- "Indexing Continuous Movement," Department of Electrical Engineering and Computer Science, University of Illinois at Chicago, IL, USA, December 15, 1999.
- "Indexing Continuous Movement," Department of Computer Science, University of Arizona, Tucson, AZ, USA, December 10, 1999.
- "Temporal Databases," The Society of Danish Engineers, Copenhagen, Denmark, November 11, 1999 (in Danish).
- "Management of 1-D Sequence Data—From Discrete to Continuous" (an opponent's presentation at the Ph.D. defense of Ling Lin), Linköping University, Department of Computer and Information Science, Linköping, Sweden, March 11, 1999.
- "A New Index for General Bitemporal Data," Norwegian University of Science and Technology, Department of Computer and Information Science, Trondheim, Norway, December 3, 1998.
- "Database Support for Time-Related Data," Selskab for Informationsteknologi, Ingeniørforeningen i Danmark, and Nordjysk Informatikforum, Aalborg, Denmark, November 5, 1998 (in Danish).
- "A New Index and its Datablade," Informix user group meeting, Copenhagen, Denmark, June 9, 1998.
- "Experiences of a Researcher," CIT-organized Ph.D. workshop, Radisson SAS Hotel, Århus, Denmark, May 12, 1998 (in Danish).
- "Spatio-Temporal Database Support for Legacy Applications," Chorochronos Meeting, Conference Centre of the National Mortgage Bank of Greece, Glyfada, Greece, March 10, 1998.
- "Temporal Database Design,"National Database Workshop, Department of Mathematics and Computer Science, Aalborg University, June, 1996.
- "The Consensus Temporal Query Language TSQL2 and Why You Should Care," Department of Computer Science, University of Copenhagen, January 24, 1995.
- "The Consensus Temporal Query Language TSQL2 and Why You Should Care," HP Labs, Palo Alto, December 15, 1994.
- "The Consensus Temporal Query Language TSQL2 and Why You Should Care," IBM Almaden Research Center, December 12, 1994.
- "Research Overview and Vacuuming of Temporal Databases," Department of Computer Science, University of Copenhagen, January 17, 1994.
- "Research Topics in Temporal Databases—Temporal Relations, Semantics, and Database Design," Department of Computer Science, University of Copenhagen, November 12, 1993.
- "Research Topics in Temporal Databases—Overview of Temporal Relations and their Semantics," Research Center Risø, Denmark, November 11, 1993.
- "Designing Computer Science Curricula for the Year 2000," Computer Science Workshop, Department of Mathematics and Computer Science, Aalborg University, February 16, 1993 (in Danish).
- "Ph.D. Abroad—Good Advice," Danish Informatics Network in the Agricultural Sciences, Research Centre Foulum, October 21, 1992 (in Danish).
- "Query Optimization and Vacuuming in Transaction Time Databases," College of Computer Science, Northeastern University, Boston, MA, March 11, 1992.
- "Temporal Specialization," Department of Computer Science, University of Arizona, January 31, 1992.
- "Research Issues in Transaction-Time Database Systems," Department of Computer Science, Birkbeck College, University of London, England, October 10, 1991.
- "Comparison of the American and Danish Eduction Systems," Aalborg University, September 20, 1991 (De Faglige F-dage 1991, in Danish).
- "Towards the Realization of Transaction Time Database Systems," Department of Computer Science, University of Arizona, February 20, 1991.
- "Transaction Time Database Systems," Public Talk, Aalborg University, January 16, 1991.
- "Extension of Relational Algebra for Engineering Information Systems," (w. L. Mark) Department of Computer Science, University of Maryland, March 15, 1989.