[1] Chongqing Univ, Sch Econ & Business Adm, Chongqing 400044, Peoples R China
[2] Chongqing Univ, Sch Publ Policy & Adm, Chongqing 400044, Peoples R China
[3] Rocket Force Univ Engn, Sch Grad, Xian 710025, Peoples R China
[4] 174 Shazheng St, Chongqing 400044, Peoples R China