theoretical analysis and policy research theoretical analysis and empirical test theoretical analysis and empirical exploration 上市公司融资结构:理论与实证研究:theoretucal analysis and empirical research theory building and empirical research theory, path and empirical research 企业研发投入驱动:理论分析与经验研究:theoretical analysis and empirical research theory and empirical research 行政立法成本分析与实证研究:cost analysis and empirical research theoretical mechanism and empirical analysis