Chief Guest/Speaker at Special Events

1. "Semantics empowered Understanding, Analysis and Mining of Nontraditional and Unstructured Data," invited talk at the Data Mining Seminar with AFRL, Wright State University, Dayton, OH, August 5, 2009.
2. "Semantic Web: Promising Technologies and Current Applications," invited talk at the Reed Elsevier EPIC Conference, Toronto, Canada, October 9, 2007.
3. "Semantic Web applications in Industry, Government, Health Care and Life Sciences," invited talk at the meeting of the Greater Dayton IT Alliance, Dayton, OH, April 18, 2007.
4. "Semantic Web applications in Industry, Government, Health Care and Life Sciences," keynote at the daytaOhio organized conference "From Research to Reality," Wright State University, Dayton, OH, October 27, 2006.
5. "Semantics to energize the full Services Spectrum: Ontological approach to better exploit services at technical and business levels," talk at the inauguration invitational event for Research School on Services-Oriented Systems Engineering, Hasso-Plattner-Institute, Potsdam, Germany, June 22, 2006.
6. "Realizing Semantic Information Brokering and Semantic Web," invited talk, Perspectives on Agents: Theories and Technologies Seminar Series, Universita degli Studi di Trento, Trento, Italy, April 27, 2000.
7. "An Overview of Workflow Management: From Process Modeling to Workflow Automation," CERN-wide Computing Colloquium, CERN, Geneva, Switzerland, March 31, 1998.
8. "Workflow Management: Technology, Experiences and Research," special university-industry seminar, Universidade Nove De Lisboa, Lisbpn, Portugal, March 25, 1998.
9. "Information (Super) Highway: New Opportunities for Global Competitive Advantage for Developing Countries", city-wide talk organized by Ahmedabad Management Association, India, August 26, 1996.
10. "Multidatabase Systems: Research and Reality," invited talk at the 1st Symposium of the Tsukuba Advanced Research Alliance (TARA), March 4, 1995.
11. "Information By-Ways, Lanes, and Superhighway," city-wide talk organized by the Ahmedabad Management Association, Ahmedabad, India, December 1994.
12. Special guest and speaker at the UBILAB Workshop on Data Management Scenarios at Union Bank of Switzerland, Zurich, Switzerland April 28, 1993.
13. Primary speaker for the Workshop on Federated Database Systems (for the members of CRAI consortium), CRAI, Rende, Italy, March 23–24, 1992. Presented and led discussions for 21 hours.