theoretical and empirical analysis 可再生能源系统风险管理：方法与实证：methods and empirical analysis theoretical mechanism and empirical analysis Firm-level trade theory and empirical analysis methods and applications 石油价格风险管理：方法与实证：methodology and empirical analysis methods and application 国际短期资本流动监管：理论与实证：theory and empirical analysis 科技金融：theoretical and empirical analysis：理论与实证分析 并列题名：Firm-level trade theory and empirical analysis