掲載種別：研究論文（学術雑誌）   共著区分：共著  

© 2015 Elsevier B.V. This paper examines the relationship between resource development and industrialization. When transport costs are high, the region with a more valuable natural resource enjoys a higher welfare than the other region. However, as transport costs decrease, firms begin to move out of the region, causing the Dutch disease to occur, initially in terms of industry share, and eventually in terms of welfare too when transport is sufficiently free. A resource boom in intermediate inputs may strengthen the tendency for manufacturing agglomeration in the same region, but a resource boom in consumption inputs will weaken this tendency. The model thus provides insight for cities to utilize their limited resources efficiently.

DOI： 10.1016/j.reseneeco.2015.01.003

掲載種別：研究論文（学術雑誌）   共著区分：単著  

I examine how unit tax and ad valorem tax affect firm location in a monopolistic-competition model with asymmetrically sized regions and a quasi-linear preference. Tax revenue is evenly distributed to all workers or evenly distributed to the workers residing in the region generating the tax revenue. When a homogeneous good is traded, despite reimbursement systems, the ad valorem tax retains the firm share, while the unit tax accelerates firm agglomeration in the larger region. When the homogeneous good is nontradable, despite taxation schemes, the intraregional distribution retains the firm share, while the interregional one accelerates agglomeration in the larger region. © 2013 RSAI.

DOI： 10.1111/pirs.12010

掲載種別：研究論文（学術雑誌）   共著区分：共著  

We examine how the spatial economy with multiple industries is shaped when interregional trade costs and intraregional commuting costs are low. All industries are characterized by increasing returns to scale and monopolistic competition, and they are differentiated by their trade costs and the degree of intra-industry competition measured by their firm numbers. We find some distinct rules in industrial location. First, at most, one industry disperses, while others agglomerate in a region according to their ratios of relative trade costs to firm numbers. Second, industries with stronger competition constitute a smaller region, while those with higher trade costs compose a larger region. The results are consistent with the classical Weberian location theory and suggest that the degree of intra-industry competition also becomes an essential factor to determine industrial location when transportation costs are small. Finally, the population differential between the regions monotonically decreases in the relative commuting cost. © 2013 Springer-Verlag Berlin Heidelberg.

DOI： 10.1007/s00168-013-0553-5

掲載種別：研究論文（学術雑誌）   共著区分：共著  

This paper shows the equivalence of spatial inequalities in industrial location and in income by revisiting the home market effect (HME) without any homogeneous good based on a reconstructed footloose capital model. In this simple framework, spatial inequalities in industrial location and in income are the HMEs in terms of firm share and wage, respectively. We show that the larger country has a more-than-proportionate share of firms and a higher wage. Furthermore, both the wage differential and the industrial location in the larger country evolve in an inverted U-pattern when transport costs decline. Finally, we analytically examine the effects of trade liberalization on the welfare and show that both countries may gain from globalization. © 2011 Springer-Verlag.

DOI： 10.1007/s00199-011-0686-7

掲載種別：研究論文（学術雑誌）   共著区分：共著  

In this paper, we examine the effects of liberalization on industrial location and national welfare in a framework of new economic geography. Specifically, we explicitly incorporate arbitrary trade costs in both differentiated-good and homogeneous-good sectors into a two-country model, and clarify the effects of trade-barrier reduction in each sector. We show that their impacts on welfare levels in the two countries are different, and, if an industry is liberalized while the other is protected, a conflict between the countries might occur. Therefore, appropriate liberalization in both sectors is effective to alleviate such a conflict. © 2012 Elsevier Inc.

DOI： 10.1016/j.jjie.2012.05.003

掲載種別：研究論文（学術雑誌）   共著区分：共著  

Most existing studies examine the home market effect (HME) in a framework with immobile labour as the only production factor and the assumption of a freely traded homogeneous good is known to be crucial for the HME to emerge. This study explores the HME in the presence of mobile capital by use of a footloose capital model allowing for positive transport costs of the homogeneous good. The mobile capital generates a channel to offset the trade imbalance of a country. As a result, the HME always appears for arbitrary transport costs in both sectors of differentiated and homogeneous goods. © Canadian Economics Association.

DOI： 10.1111/j.1540-5982.2012.01727.x

掲載種別：研究論文（学術雑誌）   共著区分：単著  

This paper investigates the relationship between firm location and skilled-labor location. While existing new economic geography (NEG) models could not explicitly analyze the relationship due to their assumptions, I construct a new NEG-type model allowing for different location dynamics of firms and skilled labor for this objective. The main results are as follows. First, a relatively large pool of skilled labor attracts firms when trade costs are small, while it might repel firms when trade costs are sufficiently large. Second, assuming that skilled workers are mobile between regions, the model shows that skilled workers agglomerate faster than firms with decreasing trade costs. Third, the model supports the hypothesis that firms follow skilled labor rather than the reverse. These results are consistent to Indian and Chinese experiences, and some "creative-class" or "skilled-city" stories. © 2011, Wiley Periodicals, Inc.

DOI： 10.1111/j.1467-9787.2011.00724.x

掲載種別：研究論文（学術雑誌）   共著区分：共著  

This paper analyzes a two-region model including multiple industries with different transport costs. Two results are derived. First, dispersion occurs for small transport costs, but the specific dispersion patterns depend on the level of urban costs. This results from an interaction of the market-access effect on consumers, the market-access effect on firms, the competition effect, and the urban-cost effect. Second, decreasing transport cost tends to let industries with lower transport costs disperse, although the shares of industries locating in the larger region are not in order of their transport costs. We further provide some empirical data concerning the second result. © 2009 Wiley Periodicals, Inc.

DOI： 10.1111/j.1467-9787.2008.00588.x

掲載種別：研究論文（学術雑誌）   共著区分：単著  

掲載種別：研究論文（学術雑誌）   共著区分：共著