Research

Research summary

Selected Works

• Spatial scale of agglomeration and dispersion: Number, spacing, and the spatial extent of cities.
  Journal of Urban Economics, forthcoming. (2026)
  (with T. Akamatsu, T. Mori, Y. Takayama) [paper] [Codes] [DP2017a] [DP2017b]
• Equilibrium refinement for a model of non-monocentric internal structures of cities: A potential game approach.
  Journal of Economic Theory (2020)
  (with T. Akamatsu) [paper]

Works in Progress

• Sampling logit equilibrium and endogenous payoff distortion (2026) [slides]
  R&R at Games and Economic Behavior
• Origin of power laws and their spatial fractal structure for city-size distributions (2024) (with T. Mori, T. Akamatsu, and Y. Takayama)
• Most likely retail agglomeration patterns (2025) (with T. Akamatsu and Y. Kogure)
• Innovation, spillovers and economic geography (2025) (with J. M. Gaspar)
• Production externalities and dispersion process in a multi-region economy (2021) (with J. M. Gaspar)
• Understanding regional dynamics (2025) [draft] [slides] [poster(ja)]
• Social interactions, technological externalities, and urban spatial structure (with H. Konishi)
• Non-monocentric urban spatial structure in two dimensions (with T. Akamatsu, T. Sakai)

Publications

• Spatial scale of agglomeration and dispersion: Number, spacing, and the spatial extent of cities.
  Journal of Urban Economics, forthcoming. (2026)
  (with T. Akamatsu, T. Mori, Y. Takayama) [paper] [Codes] [DP2017a] [DP2017b]
• Time evolution of city distributions in Germany: Group-theoretic spectrum analysis.
  Networks and Spatial Economics (2022)
  (with K. Ikeda, Y. Takayama) [paper]
• Perturbed cusp catastrophe in a population game: Spatial economics with locational asymmetries.
  Journal of Regional Science (2022)
  (with K. Ikeda, J. M. Gaspar, Y. Takayama) [paper]
• Model-based analysis on social acceptability and feasibility of a focused protection strategy against the COVID-19 pandemic.
  Scientific Reports (2021)
  (with T. Akamatsu, T. Nagae, K. Satsukawa, T. Sakai, D. Mizutani) [paper]
• Breaking and sustaining bifurcations in S_N-invariant equidistant economy.
  International Journal of Bifurcation and Chaos (2021)
  (with H. Aizawa, K. Ikeda, J. M. Gaspar) [paper]
• Equilibrium refinement for a model of non-monocentric internal structures of cities: A potential game approach.
  Journal of Economic Theory (2020)
  (with T. Akamatsu) [paper]
• First-best dynamic assignment of commuters with endogenous heterogeneities in a corridor network.
  Transportation Research Part B: Methodological (2018)
  (with H. Fu, T. Akamatsu) [paper]
• Harris and Wilson (1978) model revisited: The spatial period-doubling bifurcation in an urban retail model.
  Journal of Regional Science (2016)
  (with T. Akamatsu, Y. Takayama) [paper]
• Spatio-temporal analysis of gasoline shortages in the Tohoku region after the Great East Japan Earthquake.
  Journal of JSCE (2013)
  (with T. Akamatsu, T. Nagae, H. Yamaguchi) [paper]

和文論文 / Publications in Japanese

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