Research on the national security system and mechanisms of main countries in the world Research on the political system and security system of major countries in the world Research on the social security system in Asian countries and regions 并列题名：Research on the social security system in Asian countries and regions Research on the management system and mechanism of continuing education in developed countries Research on the join of social security system between the city and the countryside in China: theory and policy research on the governance effect and mechanism of executive reputation Study on the cultural security policy of the major countries around the world