Authors: Yin Liang¹ yinliang2003@126.com, Liu Xiao-wei^1,2, Chen Wei-ping^1,2, Zhou Zhi-ping¹

Superior Title: Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban. 2011, Vol. 43 Issue 11, p6-10. 5p.