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第五届新结构经济学专题研讨会（冬令营）圆满结束

2019年12月15-18日，北京大学新结构经济学研究院成功举办第五届新结构经济学专题研讨会（冬令营）。新结构经济学冬令营是一年一度的新结构经济学学术思想盛宴，旨在全面展示新结构经济学理论体系，最新学术研究、政策实践和数据库建设的成果，集结海内外的著名经济学家和优秀青年学者共同交流、拓展新结构经济学，深化新结构经济学研究。

冬令营

第十届新结构经济学国际研讨会圆满举办

2023年12月18日至19日，第十届新结构经济学国际研讨会以线上线下相结合的方式在北京大学英杰交流中心圆满举办。本次研讨会由北京大学新结构经济学研究院主办，国内外学者围绕“贸易与知识扩散”、“宏观经济学”、“增长与发展”、“平等和包容性”四个专题进行了广泛深刻的交流讨论。

国际会议

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林毅夫：百年未有之大变局加速演进下中国经济发展的前景和对世界的意义

4月21日，中国公共外交协会“临甲7号”沙龙活动现场，经济学家林毅夫以其一贯的理性与洞见，为全球经济迷雾中的中国航向注入了一剂强心针。面对“百年未有之大变局”的加速演进，林毅夫从历史纵深与未来图景的双重视角，系统阐述了中国经济的韧性、潜力与应对之道。

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06/13:Differential Pricing of Internet Traffic: Theory and Empirical Analysis
地点：1F, Wanzhong Building, Langrun Garden, Peking University
演讲人：Ce Shi

This paper examines theoretically and empirically the welfare effects of differential pricing for Internet traffic in a network market. We begin by analyzing a model of differential pricing by a monopolist Internet service provider (ISP), where charges are levied on content providers for traffic flow and on consumers for Internet access. Content providers differ in terms of their demand for Internet traffic and their value to consumers (“network effects”). Under linear demands, we show that compared to uniform pricing, differential pricing based solely on network effects is welfare-enhancing, while purely elasticity-based differential pricing reduces content provider surplus and social welfare. The welfare effects become ambiguous when both network effects and demand elasticities differ across content providers. Using a unique dataset on monthly transactions between a large ISP and major content providers in China (where ISPs legally own Internet traffic services in the form of CDN), we estimate the model and quantify the welfare effects using the demand and cost estimates. Our counterfactual analysis shows that consumer surplus and content provider surplus increase under differential pricing; however, a disproportionate share of the welfare gain is captured by several big content providers, while smaller content providers tend to become worse off.

06/09:Shaping Inequality and Intergenerational Persistence of Poverty: Free College or Better Schools
地点：1F, Wanzhong Building, Langrun Garden, Peking University
演讲人：Dirk Krueger

We evaluate the aggregate, distributional and welfare consequences of alternative government education policies to encourage college completion, such as making college free and improving funding for public schooling. To do so, we construct a general equilibrium overlapping generations model with intergenerational linkages, a higher education choice as well as a multi-stage human capital production process during childhood and adolescence with parental and government schooling investments. The model features rich cross-sectional heterogeneity, distinguishes between single and married parents, and is disciplined by US household survey data on income, wealth, education and time use. Studying the transitions induced by unexpected policy reforms we show that the “free college” and the “better schools” reform generate significant welfare gains, which take time to materialize and are lower in general than in partial equilibrium. It is optimal to combine both reforms: tuition subsidies make college affordable even for children from poorer parental backgrounds and better schools increase human capital thereby reducing dropout risk.

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