Deputy Editor-in-Chief of the IEEE Transactions CAS-I, January 2004-December 2005.

Founding member of the editorial board of AKCE International Journal of Graphs and Combinatorics, published from Madurai, India, 2004- to date.

Associate Editor, IEEE Trans. on Circuits and Systems, 1999-2001.

Founding Regional Editor, Journal of Circuits, Systems, and Computers (Publisher: World Scientific Publishing Company, Singapore) (1990-2002).

Editor, Proceedings of the IEEE International Symposium on Circuits and Systems, Orlando, June 1999.

Editor, Proceedings of the IEEE International Symposium on Circuits and Systems, Chicago, May 1993.

Associate Editor, IEEE Trans. Circuits and Systems, 1989-91.

Guest Editor of a special issue of the EEE Transactions on Circuits and Systems on "Computational Graph Theory: Algorithms and Applications", (Co-editor: Professor Narsingh Deo, Dept. of Computer Science, University of Central Florida, Orlando, Florida, U.S.A.), March 1988.

Associate Editor, Canadian Electrical Engineering Journal, (1985 - 87).

Fellow , IEEE

Member, ACM

Member, IEEE Circuits and Systems Society, Computer Society, Communications Society, and Information Theory Society.

NSF Panelist, 2004.

NSF Panelist, 2005.

Deputy Chair, Constitution and Byelaws Committee, 2003-to date.

Distinguished Lecturer, IEEE CAS Society, 2003 and 2004.

Honorary/Founding Member, RESMIQ (Formerly GRIAO), Institute for Microelectronics Research, Montreal, Canada, since 1992.

Founder and Founding Chair, IEEE Circuits and Systems Society Technical Committee on " Graph Theory and Computing", since September 2001.

Member, IEEE Fellows Committee of the IEEE Circuits and Systems Society, 2001 and 2002.

Member, Administrative Restructuring Committee of IEEE CAS Society, 2000-2001.

Chair, Committee on Constitution and Bylaws, IEEE CAS Society, 2000-2001.

Member, Administrative Restructuring Committee of IEEE CAS Society, 2000-2001.

Vice President, Administration, IEEE CAS Society 1998, 1999.

Member, Board of Governors, IEEE CAS Society, 1998, 1999.

Technical Program Chair, IEEE International Symposium on Circuits and Systems, Orlando, 1999.

Member, Nomination Committee, IEEE CAS Society, 1997.

Member, Steering Committee, IEEE International Symposium on Circuits and Systems, Chicago, 1993.

Technical Program Chair, IEEE International Symposium on Circuits and Systems, Chicago, 1993.

UNDP consultant to I.I.T. Bombay for their Computer Networking project. (June- July 1992).

Member, Technical Program Committee, IEEE International Symposium on Circuits and Systems. Almost every year since 1984.

Member, Canadian Computer Engineering Education Committee (1989- 1991).

Member, Canadian Delegation for the Workshop on "Distributed and Parallel Systems" organized by the Jacques Cartier Research Center, Lyons, France, Dec. 1989.

Finance Chair, Member, Steering Committee, IEEE International Symposium on Circuits and Systems, 1984.

Member, Education Committee of IEEE Circuits and Systems Society, (1984 - 86).

Organized and Chaired a special session on "Algorithmic Graph Theory" at the IEEE International Symposium on Circuits and Systems, Kyoto, Japan, 1985.