Theoretical and empirical analysis on longevity risk and its management Theoretical and empirical analysis of credit and risk in internet finance 并列题名：Theoretical and empirical analysis of credit and risk in internet finance theoretical and empirical analyses and countermeasures theoretical and empirical analysis for China Theoretical and empirical analysis on insurance and protection for women and children theoretical and empirical analysis based on Chinese commercial theoretical and empirical analysis based on new structural economics theoretical and empirical research of frontier minority areas theory and empirical analysis on institutional perspective