Authors
Chunmei Li
Department of computer technology and application, Qinghai University, Xining, China
Peng Cui
Department of computer technology and application, Qinghai University, Xining, China
Xinke Zhou
Department of computer technology and application, Qinghai University, Xining, China
Ze Xiao
Department of computer technology and application, Qinghai University, Xining, China