| Graduate Colloquim Talks at Department of Mathematics, Northern Illinois University, | DeKalb, Illinois, Sept. 13--14, 2007. |
| Colloquium talk at Department of Statistics, Harvard University | Cambridge, Boston, Oct. 15, 2007. |
| Colloquium talk at Department of Statistics, University of Georgia | Athens, GA, Jan. 31, 2008. |
| Seminar Talk at Department of Applied Mathematics, Cambridge University | Cambridge, England, March 11, 2008. |
| Seminar Talk at Department of Mathematics, Penn State University | State University, Penn, March 31, 2008. |
| Two seminar talks at Department of Mathematics, Zhongshan University | Guangzhou, China, May 13 and 15, 2008. |
| Colloquium talk at Department of Mathematics, Southern Polytechnic State University, | Atlanta, GA, Sept. 22, 2008 |
| Seminar talk at Department of Mathematics, Harvard University | Cambridge, Boston, Oct. 30, 2008 |