关键词：digital infrastructure,coordinated development of regional economy,"distance decay law", 数字基础设施,距离衰减法则,“中心-外围”经济地理格局

关键词：Agricultural Production Outsourcing Services; Factor Allocation; Agricultural Production Efficiency, 农业生产外包服务 要素配置 农业生产效率

关键词：Elite High School,New Scheme of College Entrance Examination,Academic Performance,Regression Discontinuity,School Selection,Education Resources Equilibrium, 优质高中,新高考,学业表现,断点回归,择校,教育资源均衡

关键词： robot,Manual substitution,Man-machine coordination,Growth trap, 机器人,人工替代,人机协同,增长陷阱

关键词：Free trade zones,Entrepreneurship,Institutional quality, 自由贸易试验区,创业,制度质量

关键词：Pharmaceutical cost, Brand-name drug price, Marketing status, Rx-to-OTC Switch, Stacked difference-in-differences, 药品成本,品牌药价格,营销地位,处方药非处方药转换,堆叠双重差分法

关键词：Household Registration Threshold; Childbearing Postponement; Migrant Population, 户籍门槛 生育推迟 流动人口

关键词：Digital transformation,Labor productivity,Market competitiveness, 数字化转型,劳动生产率,市场竞争力

关键词：Inclusive green growth Horizontal ecological compensation policy Green technology innovation TOPSIS entropy weight method Multi-period DID model, 包容性绿色增长 横向生态补偿政策 绿色技术创新 TOPSIS熵权法 多期DID模型

关键词：Digital infrastructure,E-government platforms,Firm performance,Information friction,Financial constraints, 数字基础设施,电子政务平台,企业生产经营表现,信息摩擦,金融约束