• Workshop Chair, International Conference and Symposium of Logic Programming,Washington, 1992
• Panel Chair, International Workshop on Distributed and Parallel Logic Programming, Washington, 1992
• Program Committee Member, International Conference for Tools for Artificial Intelligence, Arlington, Virginia, 1992
• Program Committee Member, International Conference for Applications of Prolog, 1994
• Vice Program Chair, International Conference for Tools with Artificial Intelligence, New Orleans, 1994
• Panelist, "AI in MUltimedia," The International Conference of Tools with Artificial Intelligence,, New Orleans, USA, 1994
• Program Committee, International Conference of Logic Programming, Tokyo, Japan. 1995
• Program committee member, IEEE International Symposium of Intelligence in Neural and Biological System, 1995
• Program Committee, International Conference on Tools with Artificial Intelligence, 1997
• Online Proceedings Editor, Eleventh Conference on Scientific and Statistical Database Management, Cleveland, Ohio, 1999
• Session Chair: Genome Analysis, International Conference of Information, Intelligence and Systems, Washington DC., USA, 1999
• Program Committee member, IEEE International Symposium on Bioinformatics and Biomedical Engineering, 2000
• Program Committee Member: IEEE Workshop on Multimedia Computing, Seattle, USA, 2000
• Session chair, IEEE International Symposium on Bioinformatics and Biomedical Engineering, 2000
• Session Chair, International Conference on Tools with Artificial Intelligence, 2000
• General Chair, International Conference on Tools with Artificial Intelligence, 2001
• Program Committee member, IEEE International Symposium on Bioinformatics and Biomedical Engineering, 2001
• Program Committee Member, International Conference on Tools with Artificial Intelligence, 2002
• Program Committee member, IEEE International Symposium on Bioinformatics and Biomedical Engineering, 2002
• Program Committee Member, International Conference on Tools with Artificial Intelligence, 2003
• Program Committee member, IEEE International Symposium on Bioinformatics and Biomedical Engineering, 2003
• Program Committee member, ACM SIGMM Multimedia Biometrics Methods and Application Workshop, 2003
• Program Committee member, IEEE International Symposium on Bioinformatics and Biomedical Engineering, 2004
• Program Committee member, International Conference on Distributed Multimedia Systems (DMS 2005), 2005
• Program Committee, Second World Congress on Lateral Computing (WCLC 2005)
• Program Committee, IEEE Symposium on Bioinformatics and Biomedical Engineering, Washington DC, USA
• Program Committee, International Conference on Distributed Multimedia Systems (DMS2006)
• Program Committee, Bioinformatics and Bioengineering (BIBE 2006)
• Program Committee, IADIS International Conference WWW/Internet, 2007
• Program Committee, International Conference on Computational Intelligence and Security, 2007
• Editorial Board, International Journal for Artificial Intelligence Tools, Publisher: World Scientific Publishers, since 1993

Invited Talks

• Quintus Corporation, California, USA, 1988
• Case Western Reserve University, Cleveland, OH 44106, 1989
• International Workshop on Future Trends in Logic Programming, Cleveland, OH, USA, 1989
• CAIP Parallel Computing Laboratory, RUTGERS, New Brunswick, USA, 1989
• International Workshop on Parallel Logic Programming, Austin, 1990
• Indian Institute of Technology, Kanpur, India, 1990
• Panel discussion, International Workshop on Distributed and Parallel Logic Programming, Washington, USA, 1992
• Ohio Aerospace Institute, NASA, Lewis Research Center, Cleveland, Ohio, USA. 1992
• Department of Mathematics and Computer Science, John Caroll University, Cleveland, Ohio. 1993
• Case Western Reserve University, Cleveland, OH, USA, 1993
• Panel Discussion, International Conference on Tools for AI, New Orleans, USA, 1994
• Department of Mathematics, Younstown State University, Ohio, USA, 1995
• European Molecular Biology Laboratory, Heidelberg, Germany, 1995
• The Australian AI Institute, Melbourne, Australia, 1996
• Department of Bioengineering, University of California, San Diego, USA, 2001
• Advanced Institute of Information Sciences, Wright State University, Dayton, Ohio, 2001
• Department of Computer Engineering, Benraes Hindu University, Varanasi, UP, India, 2004
• Institute of Medical Sciences, Benraes Hindu University, Varanasi, UP, India, 2004
• Department of Computer Engineering and Science, Indian Institute of Technology at Kanpur, UP, India, 2004

Refereeing Activity

• National Science Foundation
• National Institute of Health
• Journal of Logic Programming; IEEE Transactions on Systems, Man, and Cybernetics; IEEE Multimedia, IEEE Software; IEEE Transactions on Knowledge and Data Engineering, International Journal for Artificial Intelligence Tools, Biotechnology Progress, Bioinformatics
• Numerous international conferences in Parallel Processing, Symbolic Computing and Logic Programming, Programming Languages, Artificial Intelligence, Bioinformatics, multimedia, and Internet Computing