教育部人文社科项目13YJCZH268Humanities and Social Science Foundation of the Education Ministry13YJCZH268;重庆市教委科技项目J120726Technical Project of Chongqing Municipal Education CommissionKJ120726;重庆工商大学研究生创新型项目yjscxx2016-060-27Innovative Project of the Postgraduate in Chongqing Technology and Business University yjscxxyjscxx2016-060-27