Research
Work In-progress :
Culture, tastes, and market integration: Testing the localized taste hypothesis (with C. Guerrero , J. Wrona)
Transport development and the growth of cities (with K. Takeda)
Discussion Papers :
Centrality bias in inter-city trade. Ruhr Economic Papers #1013, 2023 (with Jens Wrona).
Orign of power laws and their spatial fractal structure for city-size distributions arXiv:2207.05346, 2023 (with T. Akamatsu, Y. Takayama & M. Osawa).
Multimodal agglomeration in economic geography. arXiv:191205113, 2023 (with T. Akamatsu, M. Osawa, Y. Takayama) (Previous versions: Multimodal agglomeration in economic geography. arXiv:191205113v3, 2021; Endogenous agglomeration in a many-region world. arXiv: 1912.05113v2, 2020; Spatial scale of agglomerations: Theoretical foundations and empirical implications. DP84145, Munich Personal RePEc Archives, 2018)
Collaborative knowledge exchange promotes innovation. arXiv:2210.01392, 2022 (with J. Newton, S. Sakaguchi). Previous versions: Creation of knowledge through exchanges of knowledge: Evidence from Japanese patent data. arXiv:1908.01256, 2020 (with S. Sakaguchi).
Refereed and Invited Papers :
Common power laws for cities and spatial fractal structures. Proceedings of the National Academy of Sciences of the United States of America, 117 (12): 6469-6475; first published on line on March 6, 2020; DOI: 10.1073/pnas.1913014117 (with T.E. Smith, W.-T. Hsu). Movie
Spatial pattern and city size distribution. In Oxford Research Encyclopedia of Economics and Finance, February 2020; DOI: 10.1093/acrefore/9780190625979.013.295 [DP version]
Central place analysis. In The Wiley-Blackwell Encyclopedia of Urban and Regional Studies, A. M. Orum (Ed.), April 15, 2019; DOI: 10.1002/9781118568446.eurs0039 [DP version]
Agglomeration. In The Wiley-Blackwell Encyclopedia of Urban and Regional Studies, A. M. Orum (Ed.), April 15, 2019; DOI: 10.1002/9781118568446.eurs0003 [DP version]
Evolution of sizes and industrial structure of cities in Japan from 1980 to 2010: Constant churning and persistent regularity. Asian Development Review 34(2): 86-113, 2017; DOI: 10.1162/adev_a_00096 (DP version, Summary in Japanese)
Beyond urban form: How Masahisa Fujita shapes us. International Journal of Economic Theory 13: 5-28, 2017; DOI: 10.1111/ijet.12115 (with M. Berliant) [DP version]
On the spatial scale of industrial agglomerations. Journal of Urban Economics 89: 1-20, 2015; DOI: 10.1016/j.jue.2015.01.006 (with T.E. Smith) [DP version]
A probabilistic modeling approach to the detection of industrial agglomerations. Journal of Economic Geography 14(3): 547-588, 2014; DOI: 10.1093/jeg/lbs062 (with T.E. Smith)
Increasing returns in transportation and the formation of hubs. Journal of Economic Geography 12(4): 877-897, 2012; DOI: 10.1093/jeg/lbr028
An industrial agglomeration approach to central place and city size regularities. Journal of Regional Science 51(4): 694-731, 2011; DOI: 10.1111/j.1467-9787.2011.00715.x (with T.E. Smith)
A reconsideration of the NAS rule from an industrial agglomeration perspective. Brookings-Wharton Papers on Urban Affairs, Vol. 2009: 175-216, 2009; Project MUSE https://www.muse.jhu.edu/article/271144 (with T.E. Smith)
Monocentric versus polycentric models in urban economics. In The New Palgrave Dictionary of Economics, 2nd ed., S. N. Durlauf and L. E. Blume (Eds.), Palgrave Macmillan: 754-756, 2008; DOI: 10.1057/978-1-349-95121-5_2454-1 [DP version]
The number-average size rule: A new empirical relationship between industrial location and city size. Journal of Regional Science 48(1): 165-211, 2008; DOI: 10.1111/j.1467-9787.2008.00550.x (with K. Nishikimi, T.E. Smith)
A divergence statistic for industrial localization. Review of Economics and Statistics 87(4): 635-651, 2005; DOI: 10.1162/003465305775098170 (with K. Nishikimi, T.E. Smith)
Frontiers of the new economic geography. Papers in Regional Science 84(3): 377-405, 2005; DOI: 10.1111/j.1435-5957.2005.00021.x (with M. Fujita)
Transport development and the evolution of economic geography. Portuguese Economic Journal 4: 129-159, 2005; DOI: 10.1007/s10258-005-0042-6 (with M. Fujita)
Skills, agglomeration, and segmentation. European Economic Review 49(1): 201-225, 2005; DOI: 10.1016/S0014-2921(03)00018-7 (with A. Turrini)
Spatial distribution of economic activities in Japan and China. in Handbook of Urban and Regional Economics Vol. 4, J. V. Henderson and J.-F. Thisse (Eds.): 2911-2977, 2004; DOI: 10.1016/S1574-0080(04)80022-1 (with M. Fujita, J. V. Henderson, Y. Kanemoto)
Economies of transport density and industrial agglomeration. Regional Science and Urban Economics 32(2): 167-200, 2002; DOI: 10.1016/S0166-0462(01)00078-3 (with K. Nishikimi)
On the evolution of hierarchical urban systems. European Economic Review 43(2): 209-251, 1999; DOI: 10.1016/S0014-2921(98)00066-X (with M. Fujita, P. Krugman)
On the dynamics of frontier economies: Endogenous growth or the self-organization of a dissipative system? Annals of Regional Science 34: 39-62, 1998; DOI: 10.1007/s001680050062 (with M. Fujita)
Structural stability and the evolution of urban systems. Regional Science and Urban Economics 27(4-5): 399-442, 1997; DOI: 10.1016/S0166-0462(97)80004-X (with M. Fujita)
A modeling of megalopolis formation: The maturing of city systems. Journal of Urban Economics 42(1): 133-157, 1997; DOI: 10.1006/juec.1996.2018
The role of ports in the making of major cities: Self-organization and hub effect. Journal of Development Economics 49: 93-120, 1996; DOI: 10.1016/0304-3878(95)00054-2 (with M. Fujita) (Older version)
Non-technical Articles :
Inter-city trade. Vox Column, August 16, 2019 (with J. Wrona)
Spatial pattern and city size distribution: Evidence from 450 Japanese cities. Vox Column, August 11, 2019
Constant churning and persistent regularity in population and industrial locations: Evidence from Japan. Vox Column (August 25, 2017)