Jianping Li

Institute of Policy and Management, Chinese Academy of Sciences, Beijing 100080, China

(ljp@mail.casipm.ac.cn or jianpingli@yahoo.com)

 Yi Peng

University of Nebraska at Omaha, NE68182, USA

(ypeng@mail.unomaha.edu)

 Gang Kou

Thomson Legal & Regulatory, R&D, 610 Opperman Drive, Eagan, MN55123, USA

(kougang@yahoo.com )