Academic Visits

1. Carnegie Mellon University, September 2007 - May 2008
   Sabbatical visit to collaborate with T. Kanade
   
   
2. Fudan University, China, December 2004 - January 2005
   Invited by Profs. Ruqian Lu and Yanqiu Chen
   
   
3. Uppsala University, Sweden, September 1999
   Invited by Prof. Dennis A. Hejhal
   
   
4. Uppsala University, Sweden, September 1997
   Invited by Prof. Dennis A. Hejhal