My research focuses on the mechanism of spatial organisation in economic activities.


Spatial Dynamics: Origin of Trade, City and Great Divergence

Research question: One of the central questions of policymakers is what is the transition process of the adjustment of economic activities to the regional policy changes, and its distributional effects over time and space. We answer these questions by building the dynamic model of the spatial economy through the prism of the structural change and the emergence of the inequality across space and generations.

Highways, High-Speed railways, and Urban Growth: Evidence from Japan 1970—2015 (with Tomoya Mori)

Abstract: This paper studies the impact of high-speed transport network on urban growth at both the national and individual city scales and provides the first systematic evidence for theoretical implications from the extant endogenous agglomeration models in a many-region setup. An improvement of inter-regional transport access induces agglomeration at the global scale — only a subset of cities grow by absorbing population from the rest, and dispersion at the local scale — decentralization proceeds in each city. Furthermore, we find contrasting responses to the transport development by different industries and research activities.

On Spatial Inequality

Abstract: What determines the segregation of households and the geographical distribution of industries in a city? This paper develops a spatial equilibrium model of an urban system with heterogeneous agents and endogenous commuting. Heterogeneity in worker skills and sorting patterns across industries leads to workplace sorting associated with residential sorting through commuting. The distribution of industries, in turn, shows the heterogeneity due to trade patterns and proximity to workplaces with comparative advantage. We show how the model can be used to evaluate the relevant place-based policies, including the improvement of infrastructure, zoning, and gentrification.

Spatial Frictions and Urban SYSTEM

Research question: What is the shape of a city in the future? — We consider the impact of change in spatial friction and growth of a city.

Industrial Coagglomeration: A Cluster base Approach

Abstract: This paper proposes a new framework to identify coagglomeration between industries based on the spatial cluster-detection approach. Our approach theoretically builds on the central place theory as well as the spatial sorting of firms. Using data on manufacturing industries in Japan, we demonstrate the performance of our new methodology and illustrate its advantage over the existing methods.


© Kohei Takeda 2019