Supported by the National Natural Science Foundation of China(11661003);the Natural Science Foundation of Jiangxi Province(20161BAB201033,20192BAB201006);Science and Technology Project of Education Department of Jiangxi Province(GJJ150582,GJJ160559)。
the National Natural Science Foundation of China(10431010);the MOE Project of Key Research Institute of Humanities and Social Sciences in Universities (05JJD910001);Center for Applied Statistics of Renmin University of China