Europe:
- Keynote Lecture: International Conference on Systems Engineering and Engineering Management, Imperial College, England, July 2008
- Keynote Lecture: International Conference on Innovation and Management, Netherlands, December 2008
- Keynote Lecture: International Conference on E-Activity and Leading Technologies, Spain, December 2008
- Keynote Lecture: INFER Conference on Process Management and Controlling, Czech Republic, Europe, November 2007
- Keynote Lecture: International Scientific Conference on Technology Systems Operations Management, Slovak Republic, Europe, November 2007
North America:
- Keynote Lecture: World Congress on Engineering and Computer Science (International Conference on Computer Science and Applications), UC Berkeley, San Francisco, California, USA, October 2007
- Keynote Lecture: International Computer Science and Technology Conference, San Diego, California, USA, April 2008
- Invited Lecture: International Conference on Software Engineering Research and Practice, Nevada, USA, June 2007
- Keynote Lecture: World Conference on Systemic, Cybernetics, and Informatics, Florida, USA, June 2008
Asia:
- Keynote Lecture: International Conference on Management, Ahmedabad, Gujarat, January 2009.
- Keynote Lecture: International Conference on Systemics, Cybernatics, and Informatics, India, Hyderabad, 2008
- Keynote Lecture: Second International Conference on Resource Utilization and Intelligent Systems, India, Coimbatore, 2008
- Keynote Lecture: International Conference on Advanced Computer Theory and Engineering, Phuket, Thailand, December 2008.
- Keynote Lecture: National Conference on Information Technology, India, 2007
International Conferences Chairing
- Conference Chair, International Business Conference (IBC 2008), Michigan, USA.
- Program Co-Chair, International Workshop on Broadband Wireless Internet (BWIA 2007), Ottawa, Ontario, Canada, August 2007.
- Organizing Co-Chair, International Symposium on Ad-Hoc and Ubiquitous Computing (ISAHUC 2006), Mangalore, India, December 2006.
- Session Chair, International Conference on Software Engineering Research and Practice (SERP 2007), Nevada, USA, June 2007.
- Session Chair, National Conference on Information Technology (NCIT 2007), New Delhi, India, August 2007
- Session Chair, International Conference on Software Engineering Research and Practice (SERP 2006), Nevada, USA, June 2006.
- Session Chair, International Conference on Enterprise Information Systems (ICEIS 2005), Miami, USA, May 2005.
- Session Chair, International Workshop on Security in Information Systems (WOSIS 2005), Miami, USA, May 2005.
- Session Chair, International Conference on Software Engineering Research and Practice (SERP 2005), Nevada, USA, June 2005.
- Session Chair, International Conference on Communications in Computing (CIC 2005), Nevada, USA, June 2005.