Comparative study on emergency management systems and mechanism Comparative study on border (port) management system along OBOR countries Comparative study on tourism management in China and other countries Comparative study on urban law enforcement systems in Guangdong and Macao Modern emergency management theory and method Research on German emergency management system. 并列题名：Modern emergency management theory and method Research on German emergency management system 并列题名：Comparative study on urban law enforcement systems in Guangdong and Macao