Invited Lectures - Conferences and Distinguished Speaker Series

1. "Search for Content on the Mobile Web," (in Danish), Computerworld Mobile Wave Conference, Copenhagen, June 3, 2014.
2. "Keyword-Based Spatial Web Querying," 25th Anniversary Distinguished Lecture Series, Department of Computer Science, Hong Kong Baptist University, Hong Kong, April 24, 2014.
3. "Querying the Web With Local Intent," DIKU Talk, University of Copenhagen, Copenhagen, March 13, 2014.
4. "Advances in Spatio-Temporal Data Management: User-Generated Data and Geo-Textual Services,'' InfinIT, Copenhagen, January 15, 2014.
5. "Data Management for Location-Based Services," 2012 KAIST ICC Global Lecture Series, KAIST, Daejeon, Korea, August 7–9, 2012.
6. "Managing High-Velocity Mobile Location Data," Workshop on Big Data Analysis and Management, Beijing, China, July 19, 2012.
7. "On Supporting Location in Web Querying," Department of Informatics, University of Zurich, Zurich, Switzerland, May 3, 2012.
8. "World wide web – nu med en geografisk dimension," Royal Danish Academy of Sciences and Letters, Copenhagen, February 16, 2012.
9. "New Directions in Spatial Web Querying," Seventh International Conference on Semantics, Knowledge and Grid, Beijing, China, October 24–26, 2011.
10. "Tracking and Querying Continuously Moving Objects," Symposium on Biodiversity in the Silicon Age, Royal Danish Academy of Sciences and Letters, Copenhagen, Denmark, May 18, 2011.
11. "Enabling Geo-Location in Mobile Services," Danish Society for Computer Science, Copenhagen, Denmark, February 24, 2011.
12. "The Other 87 Percent – Data Management for Indoor Mobile Services," Hong Kong Polytechnic University, Hong Kong, December 16, 2010.
13. "Enabling a Spatial Web," Renmin University, Beijing, China, December 10, 2010.
14. "Geo-Spatial Context for Mobile Services," Tsinghua University, Beijing, China, December 9, 2010.
15. "Geo-Spatial Context Awareness for User-Generated Mobile Services," Department of Computer Science and Engineering, University of Minnesota, MN, USA, April 13, 2009.
16. "Data Management for Location-Based Services," New England Database Society, Brandeis University, MA, USA, March 27, 2009.
17. "Privacy for Spatial Queries and Data," Stanford InfoSeminar 2009, Stanford, CA, USA, March 6, 2009.
18. "Towards Pervasive Tracking: Current Solutions and Challenges," First International Seminar on Indoor Spatial Awareness, Seoul, South Korea, August 11, 2008.
19. "Towards General Temporal Aggregation," Twentyfifth British National Conference on Databases, International Colloquium on Advances in Database Research, Cardiff, Wales, UK, July 8, 2008.
20. "Streamspin: User-Generated, Geo-Social Mobile Services," Media on the Move, Aalborg, Denmark, May 28, 2008.
21. "Enabling Mobile 2.0: Data Management for User-Generated Services," Stanford-HP InfoLab Seminar Series, Stanford, CA, USA, March 7, 2008.
22. "Supporting User-Generated, Location-Aware Mobile Services," UMIC Research Cluster, Aachen, Germany, February 26, 2008.
23. "Enabling Technologies for Mobile 2.0," Symposium on Innovative Software Technology, Tartu University, Estonia, December 11, 2007.
24. "Streamspin: Mobile Services for the Masses," Mobile Developer Days 2007, Aalborg, Denmark, August 30, 2007.
25. "ITS Meets Web 2.0," Executive Session on "Mobility Services," Sixth European Congress and Exhibition on Intelligent Transport Systems and Services, Aalborg, Denmark, June 19, 2007.
26. "Technologies ThatWill Shape FutureMobility Services," Special Session on "Delivering Mobile Services," Sixth European Congress and Exhibition on Intelligent Transport Systems and Services, Aalborg, Denmark, June 19, 2007.
27. "To Be for Mobile Services What YouTube is for Video—Research Agenda and Results," Faculty of Informatics, University of Karlsruhe, Germany, May 9, 2007.
28. "B-Tree and R-Tree Based Indexing of Moving Objects," Institute for Pervasive Computing, ETH Zurich, Zurich, Switzerland, April 25, 2007.
29. "When the Internet Hits the Road," Department of Computer Science, ETH Zurich, Zurich, Switzerland, April 23, 2007.
30. "Geo-Context for Mobile Services—Current-Location Tracking and Routes," Institute of Parallel and Distributed Systems, Faculty of Computer Science, Electrical Engineering, and Information Technology, University of Stuttgart, Stuttgart, Germany, June 23, 2005.
31. "Towards Knowing, Always and Everywhere, Where Everything Is, Precisely," Department of Computer Science, University of Arizona, AZ, USA, February 8, 2005.
32. "Data Modeling for Location-Aware, Mobile Services," Faculty of Computer Science, Free University of Bozen-Bolzano, Bolzano/Bozen, Italy, January 16, 2004.
33. "Capture of Network-Constrained Moving Objects—Towards a Foundation forMobile Services," Faculty of Computer Science, Free University of Bozen-Bolzano, Bolzano/Bozen, Italy, January 16, 2004.
34. "Generalized Updates in R-Trees," Faculty of Computer Science, Free University of Bozen-Bolzano, Bolzano/Bozen, Italy, January 16, 2004.
35. "Data Management for Moving Objects," Second International LBS and Telematics Workshop, KyoYuk MunHwa HoeKwan, Seoul, South Korea, November 20, 2003.
36. "Capture of Network-Constrained Moving Objects—A Foundation forMobile Services," Chungbuk National University, Cheongju, South Korea, November 19, 2003.
37. "Efficient Tracking Techniques in Ubiquitous LBS," Electronics and Telecommunications Research Institute, Daejeon, South Korea, November 18, 2003.
38. "Supporting Frequent Updates in R-Trees: A Bottom-Up Approach," Pusan National University, Busan, South Korea, November 17, 2003.
39. "Mobile Information Services: Trends and Challenges," Nouhauz Executive Round Table, Aalborg, Denmark, May 8, 2003.
40. "Data Management for Mobile Services," The 55th Studiemøtet, Sandefjord, Norway, June 13–14, 2002.
41. "Location-Based Services—A DataManagement Perspective," Kartdagar 2002, Jönköping, Sweden, April 17–19, 2002.
42. "Chorochronos Research," Workshop on High Performance Object Databases, Cardiff, Wales, July 21, 2000.
43. "Research in TimeCenter," Chungbuk National University, Cheongju, Chungbuk, Korea, May 9, 2000 (three talks).
44. "Designing Databases With Time-oriented Data," Computer Laboratory, University of Cambridge, UK, October 22, 1997.
45. "Designing Temporal Relational Databases—Normal Forms and Decomposition Rules based in Attribute Semantics," Department of Management Information Systems, University of Arizona, November 8, 1996.
46. "Temporal Database Management," Department of Computer Science, Aarhus University, October, 1995.