-- Guoqing Diao, PhD Associate Professor Director, PhD Program in Statistical Science Department of Statistics The Volgenau School of Engineering George Mason University 4400 University Drive, MS 4A7 Fairfax,, VA 22030 Phone : 703-993-9113 E-mail: [log in to unmask]<mailto:[log in to unmask]> Web: http://mason.gmu.edu/~gdiao