Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：The Association of Japanese Geographers  

DOI： 10.4157/ejgeo.17.338

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Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)  

DOI： 10.3130/aija.87.1229

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Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Architectural Institute of Japan  

DOI： 10.3130/aija.86.2304

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Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)  

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Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Architectural Institute of Japan  

This study aims at the verification of the hypothesis on the polarization to mega-city regions and urban divide with focus on gentrification in the Special Wards of Tokyo, Japan. Following the extensive literature review on gentrification, firstly, we analyzed the situation of gentrification and urban divide at the Ward level and applied the cluster analysis to further discuss the situation at a micro-level. Secondly, we shed light on the relation between local government policies on urban regeneration and gentrification in Tokyo and found strong relationship between them.

 The acceleration of the concentration of wealth to Tokyo is clearly observed in Japan since 2000s. In particular, the polarization of wealth as well as the highest income class to the central part of Tokyo is ever accelerating these days under the neoliberal urban policies. In the urban scale analysis in the Special Wards of Tokyo, situation of gentrification in the central city areas are obvious these days. On the other hands, the concentration of lower income households is observed in inner areas. Younger people of lower income tend to live in the west inner city areas while aged people with lower income tend to live in the north and east inner city areas. As a result, the urban divide in both social and spatial terms are observed. Yet, in inner city areas middle-class gentrification through the development of high-rise apartments/condominiums are also actively advancing and thus micro-level, mosaic-pattern spatial disparity is formed in inner city areas of Tokyo.

 Based on the analysis on the land use and urban redevelopment policies of Tokyo Metropolitan Government and the City Master Plans of 7 selected Wards (cities), it is found out that urban development/redevelopment policies at the Ward level are classified to the following 3 types: ‘large-scale urban redevelopment oriented type’, ‘incremental improvement oriented type’ and ‘hybrid type’. Wards located in the city center and its vicinity belong to the large-scale urban redevelopment-oriented type, while other Wards belong to other types based on their situations. The large-scale urban redevelopment-oriented policies naturally have high affinity to neoliberalism urban development/redevelopment policies. It follows that urban development/redevelopment polices in the Wards in the city center and its vicinity promote gentrification in those areas and thus bring about urban divide in Tokyo.

DOI： 10.3130/aija.86.149

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Other Link： https://www.jstage.jst.go.jp/article/aija/86/779/86_149/_pdf

Language：English   Publishing type：Research paper (scientific journal)   Publisher：WILEY  

This study aimed at verifying a hypothesis regarding the polarization to megacity regions and the urban divide. In the first part, we examined the polarization to megacity regions in Japan focusing on concentration of wealth based on various economic statistics, as well as records of public investment. In the second part, we selected Osaka city as a case analysis for examining the urban divide inside a megacity region (based on a cluster analysis) and analyzed the current conditions of the urban divide in Osaka City. In the third part, we examined the diverse types of living in the Airin area, Nishinari Ward, Osaka City. Through analysis based on interview surveys conducted at local real estate companies, we discussed the mechanisms in housing provisions for realizing of diversity. Urban divides (in both social and spatial terms) are clearly observed in Osaka City. In particular, the Airin area of the Nishinari Ward in Osaka City is the area where daily construction workers are concentrated, and many of workers in this area are old and/or have lost jobs. Simultaneously, the Airin area functions as a place to nurture diversity, as a gateway to the city.

DOI： 10.1002/2475-8876.12189

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Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Wiley  

DOI： 10.1002/2475-8876.12189

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Other Link： https://onlinelibrary.wiley.com/doi/full-xml/10.1002/2475-8876.12189

Authorship：Lead author,　Corresponding author  

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Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：WILEY  

Both theoretical and empirical research studies the factors influencing firms' location choices. This paper presents a new viewpoint by considering relationship continuity to explain small-scale relocations and relocations of small and medium-sized enterprises (SMEs), which represent the majority of firms. The influences of firms' relationships with financing institutions are studied using a two-stage nested logit model. Consequently, the positive effect of relationships on location choices is revealed and the factors preventing firms from moving are described. The model is valid for estimating relocations to medium-sized cities, and the influences on shrinking firms as opposed to expanding firms are especially strong.

DOI： 10.1111/pirs.12425

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Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：The City Planning Institute of Japan  

Diversity of birthplace of workers is pointed has been regarded as important factors for performances of firms. On the other hand, from the viewpoint of promotion of rural areas, introduction of information from advanced areas including tacit knowledge is effective. In this paper, focusing on intranational variety of hometowns, we analyzed representatives' birthplaces of small and medium sized firms in Japan. We detected the both effects on the performance of the firms. As a result, it has been revealed that the former process especially influence the general growth of firms indicated with the increasing ration of the number of workers for example and the latter has strong relationship with making innovations. In addition, both contribute to variety of industrial categories through enhancement of highly skilled categories. These results imply the significance of increasing gross population movement in industrial promotion.

DOI： 10.11361/journalcpij.53.1043

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Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：The City Planning Institute of Japan  

This research aims to test the viability of 'innovative town hypothesis' in the case of the nurturing innovation power in metropolitan cities, taking the case of Tokyo 23 wards areas. 'Innovation town hypothesis' is the hypothesis to explain the process of regional revitalization by making the town centers to be creative and multiple-use incubation areas. In order to test the hypothesis, this research conducted in Tokyo 23 wards areas (1) analysis of spatial structure from the viewpoint of creative city theory, (2) analysis of the urban forms from the viewpoint of variety, and (3) interview survey to key persons from the viewpoint of the formation of creative community. The research concludes that the Tokyo inner area has a favorable spatial structure and urban forms to form creative communities and thus it has functioned as the platform of incubation of creative industry.

DOI： 10.11361/journalcpij.53.740

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Authorship：Lead author,　Corresponding author   Language：Japanese  

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Other Link： http://www.cpij.or.jp/com/ac/report/2017.html

Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)  

DOI： 10.20592/jaeg.63.3_201

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Other Link： https://www.jstage.jst.go.jp/article/jaeg/63/3/63_201/_article/-char/ja

Language：Japanese   Publisher：Japan Society of Civil Engineers  

Although it is important to understand the influence of consumer behavior on regional economy, as far as we know, no empirical research has been conducted in Japan. Therefore, the purpose of this study is to verify the economic impact of consumer's behavior on regional economy. We investigated two local merchants and four chain stores in Kyoto-city in order to compare the local economic return of consumption. As a result it was shown that if some shopping is done at local merchant, approximately 52% of consumption revenue will return to local economy, however if some shopping is done at chain store, the return rate will become about its half. This result suggests us about a desirable consumer behavior for regional vitalization.

DOI： 10.2208/jscejipm.72.I_393

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Authorship：Lead author,　Corresponding author   Language：Japanese   Publisher：The City Planning Institute of Japan  

As extreme concentration to Tokyo proceeds, relocations of firms to rural areas are needed. However, comparing to Tokyo, Japanese cities in rural areas are disadvantaged in some economic factors. There are three approaches to explain the reason why firms relocate to disadvantaged areas: network of firms, location condition and city centers. In this paper, the author tried to verify influences of these factors through analyses of individual firms and regions. It can be realized by comparing rational destinations and real destination of relocations. As a result, some group of firms which relocated to disadvantaged areas are innovation oriented or high skilled personnel oriented. And regions which attract many firms tend to be good at three factors above. Especially, structure of networks of inter-firm deals of a region is important, and this corresponds to effects of policies which are carried out to make good use of existing firms.

DOI： 10.11361/journalcpij.51.1070

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Other Link： https://www.jstage.jst.go.jp/article/journalcpij/51/3/51_1070/_article/-char/ja/

Authorship：Lead author,　Corresponding author   Language：Japanese   Publisher：The Japan Association of Economic Geography  

&nbsp;&nbsp;&nbsp;&nbsp;Even while the Japanese population is decreasing, immigration to larger cities has not stopped. Therefore, smaller cities are confronting an even heavier decline. Up until today, efforts have been made to promote the industries of smaller cities, but the outcomes are inadequate to satisfy the need to relocate population. Based on spatial economics that originated with Krugman (1991), it is natural that people will concentrated in larger cities with decreasing transportation costs.<BR>&nbsp;&nbsp;&nbsp;&nbsp;Based on the above, this paper demonstrates changes in the location of firms by introducing distance resistances and increasing returns as fundamental principles. The model constructed here supposes a balance of trade networks and an imbalance from the location of firms and expresses slow change in firm location. This means that the potential condition of the easing of location at any time slowly influences the real location. As a result, this shows clearly that a concentration of some kinds of industries to smaller cities is possible.<BR>&nbsp;&nbsp;&nbsp;&nbsp;This firm location change comes from data held by TEIKOKU DATABANK, LTD., examining about 140 thousand firms. Potential conditions for location were rated by adopting 80 categories of industries and 231 metropolitan areas. Therefore, it was possible to consider the potential to locate to smaller cities.<BR>&nbsp;&nbsp;&nbsp;&nbsp;As a result, a slow change in firm location is observed and the possibility of firms moving to smaller cities is brought to light. Additionally, it is shown that there are a variety of industries based on distribution of location potential. Firms of some industries make decisions to locate to the central parts of the nation, while others make the decision to move to less central or marginal areas. This fact suggest an idea of what industries are suitable to promote to local municipalities.

DOI： 10.20592/jaeg.62.1_19

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Language：Japanese  

DOI： 10.11361/journalcpij.50.580

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Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：The City Planning Institute of Japan  

Importance to build industrial accumulations on the scale of metropolitan areas in order to develop provincial cities is indicated. However, current policies to promote industrial accumulations don't have the viewpoint of where to locate within metropolitan areas. In this paper the author presented two models of accumulations (central place theory and economic base model) and revealed peculiarity of location depending on distance from city centers analyzing the structure of deals between firms. In order to realize this, the author classified companies grounding on distribution (inter/outer the metropolitan area) of their selling and buying. As a result, while industrial accumulations based on central place model in any size of city are formed at city center, industrial accumulations based on core industry model are formed at far suburban areas except large cities populated more than one million.

DOI： 10.11361/journalcpij.50.560

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Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)  

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Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

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Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

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Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

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一般財団法人国土計画協会「新たな国土・広域計画研究会の取組・成果」第3章

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Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

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Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

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Language：English   Presentation type：Oral presentation (general)  

Venue：University of Architecture Ho Chi Minh City, Ho Chi Minh City, Vietnam  

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Language：English   Presentation type：Oral presentation (general)  

Venue：University of Cologne, Cologne, Germany  

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Language：Japanese   Presentation type：Poster presentation  

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Language：English   Presentation type：Oral presentation (general)  

Venue：Holiday Inn London Bloomsbury, London, UK  

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Language：Japanese  

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Language：English   Presentation type：Oral presentation (general)  

Venue：Nagoya Congress Center  

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Language：Japanese   Presentation type：Oral presentation (general)  

Venue：神戸大学六甲台キャンパス  

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Language：Japanese  

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Language：Japanese   Presentation type：Oral presentation (general)  

Venue：慶應義塾大学三田キャンパス  

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Language：Japanese   Presentation type：Oral presentation (general)  

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Language：Japanese   Presentation type：Oral presentation (general)  

Venue：東京工業大学大岡山キャンパス  

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Language：English   Presentation type：Oral presentation (general)  

Venue：National Urban Planning Exhibition Hall, Hanoi, Vietnam  

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