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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：如何理解和应对“贸易碎片化”

2024年3月26日，北大国发院名誉院长、新结构经济学研究院院长、南南学院院长林毅夫教授应邀参加博鳌亚洲论坛2024年年会“减少贸易碎片化”分论坛。本文根据林毅夫教授在分论坛上的发言整理。

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04/19:Task Complementarity and Spatial Organization of Firms
地点：359s, Overseas Exchange Center, Peking University
演讲人：Vladimir Tyazhelnikov

We introduce a quantifiable model of international production of a complex good that consists of multiple parts. Production of any pair of parts in the same country exhibits pair-specific cost complementarity, and consequently, decisions on production locations are interrelated, which generates rich patterns of clustering. We use input- output and other industry-level data from the United States to estimate the model for US production and find that these complementarity costs are highly heterogeneous across industries and, on average, account for 1.86% of total production costs. Gains from trade associated with the decrease in these costs, which we interpret as non-tariff trade liberalization, are 50% larger than in the case of a decrease in tariffs. Finally, using our model, we construct an index of international integration, that, unlike standard measures, accounts not only for the total costs of parts produced abroad but also what parts are produced and how similar these parts are to one another. We find that this index is a better predictor of the welfare consequences of trade liberalization than conventional measures of offshoring.

04/12:Evaluating Urban Planning: Evidence from Dar es Salaam
地点：Zoom
演讲人：Vernon Henderson

Urban informality, which is prevalent in Africa's rapidly growing cities, can reduce private investments, lower tax bases, and exacerbate urban disamenities. A key policy tool to address this problem is greenfield urban planning where governments purchase cheap agricultural land on the urban fringe and partition it into planned, surveyed, and titled de novo plots, which people can purchase and build houses on. Yet, there is very little systematic evidence on the effects of de novo planning choices, such as the size and configuration of residential and non-residential plots. This paper studies the consequences of the planned layout of Tanzania's “20,000 plot” project, which provided over 36,000 residential plots in 12 project areas on the fringes of Dar es Salaam in the early 2000s. To study this project, we use new data from questionnaires and satellite imagery from circa 2020 and combine within-neighborhood analysis and spatial regression discontinuity designs. We find that small plots, which command higher land values and are built more intensively, are under-provided; public service provision (except roads) lags the plans; and about half the plots are still unbuilt; yet the areas nevertheless attract highly educated owners. These findings suggest that while the project led to large overall gains in land value, significant improvements to planning may be possible.

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