Has been invited to visit and/or give research lectures on various topics at the following international campuses, institutes or professional societies during 1993-2002:

1. Guizhou Economic Mathematics Research Association, China (June 1993)
2. Computing Center, Chinese Academy of Sciences (August 1993)
3. Southwestern Petroleum Institute, China (summers of 1993-1998, November 1998, May 2000)
4. Chengdu University of Science and Technology, China (June 1993, June 1995)
5. Sichuan University, China (June 1995, September 1998, Summer 2001)
6. Southwest Jiao Tong University, China (June 1994)
7. Chinese University of Electronic Sciences, Chengdu, China (June 1997, May 2000, December 2000, Summer 2001)
8. Institute of System Science, Chinese Academy of Sciences (summers of 1994-1997,
December 1998)
9. Chongqing University of Posts and Telecommunication, China (June 1996, September 1998)
10. University of Petroleum at Beijing, China (June 1997)
11. Xi'an Petroleum Institute, China (June 1997)
12. Daqing Petroleum Institute, China (June 1997, December 1998)
13. Jianghan Petroleum Institute, China (November 1998)
14. Development Research Center of the State Council, China (December 1998)
15. Korea Advanced Institute of Technology, Seoul, Korea (August 1998, May 2000)
16. IEEE Computer Society, Buffalo, NY Chapter (April 1999)
17. IEEE Computer Society, Rochester, NY Chapter (April 1999)
18. Development Research Center of the State Council, China (August 1999)
19. National Chiao Tung University, Taiwan (August 1999)
20. National Taiwan University, Taiwan (August 1999)
21. Institute of Policy and Management, Chinese Academy of Sciences (Summer 2000,
December 2000, Summer 2001, December 2001)
22. Institute of Software, Chinese Academy of Sciences (Summer 2001)
23. Institute of Computing Technology, Chinese Academy of Sciences (Summer 2001)
24. Institute of Automation, Chinese Academy of Sciences (Summer 2001)