掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.econmod.2023.106236

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担当区分：責任著者   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

DOI： 10.1007/s00168-021-01072-z

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その他リンク： https://link.springer.com/article/10.1007/s00168-021-01072-z/fulltext.html

掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

Abstract

Using an intra‐industry trade model with mobile/immobile capital, we revisit the characteristics of optimal tariffs and tariff wars. In contrast to folk wisdom on optimal tariffs, we show that when capital is freely mobile across countries, smaller countries impose higher tariffs, and they can win tariff wars. This occurs because tariffs have a strong impact on output expansion. Even if capital import taxes are available, small countries can win tariff wars, although larger countries may apply higher tariff rates.

DOI： 10.1111/roie.12562

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/roie.12562

担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

DOI： 10.1111/jors.12517

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jors.12517

担当区分：責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

DOI： 10.1111/twec.12983

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/twec.12983

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Graduate School of Information Sciences, Tohoku University  

DOI： 10.4036/iis.2021.r.02

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media {LLC}  

DOI： 10.1007/s00168-020-00993-5

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その他リンク： http://link.springer.com/article/10.1007/s00168-020-00993-5/fulltext.html

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Informa UK Limited  

DOI： 10.1080/00343404.2019.1633154

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

© 2018 John Wiley & Sons Ltd Assuming an inelastic labor supply, existing studies show that a larger country has a higher wage rate and a higher individual income. We reexamine these results using a model with an endogenous labor supply and variable markups. We find that these results can be reversed. Specifically, in the larger country, the wage rate is lower but the individual income is higher if the love for variety is strong and trade costs are high. In contrast, the wage rate is higher but the individual income may be lower if the love for variety is weak and trade costs are low.

DOI： 10.1111/roie.12350

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/roie.12350

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Oxford University Press (OUP)  

DOI： 10.1093/jeg/lbx022

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

DOI： 10.1007/s10888-015-9318-y

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その他リンク： http://link.springer.com/article/10.1007/s10888-015-9318-y/fulltext.html

掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

© 2015 Elsevier Inc. Assuming an outside good, the existing intra-industry trade models show that the domestic price index is lowered and the welfare is improved by unilateral nontariff protection against foreign products. Removing the outside good, we reexamine this issue incorporating the factor-price changes to capture the terms-of-trade effect. In the case of one production factor (immobile labor), we find that unilateral protection is neither price-index lowering nor welfare improving. In the case of two production factors (immobile labor and mobile capital), the same result holds if the elasticity of substitution between varieties is as large as that observed in empirical studies. Therefore, the outside-good assumption is not harmless to evaluate trade policies.

DOI： 10.1016/j.iref.2015.09.005

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：東北大学大学院情報科学研究科ジャーナル編集委員会  

We study a two-country two-factor model with free entry and monopolistic competition. There are two industries employing immobile labor as fixed input and mobile capital as marginal input. Firms cannot move across countries, but only move across industries within a country. The two industries can differ in three aspects: factor intensities, transport costs and demand elasticities. The two countries are identical except for size. The production specialization and trade pattern are the results of the interaction of two effects: the market access effect and the wage differential effect.

DOI： 10.4036/iis.2015.r.02

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.reseneeco.2015.01.003

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.najef.2014.10.004

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.mathsocsci.2014.11.005

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

This paper surveys the growing literature on the home market effects (HMEs) in spatial economics. The HMEs are utilized to disclose the role of country size in the configuration of economic activity. Various HMEs display distinctive features of size advantage and they are originally obtained from different models. Recent studies find that these features are closely related to each other. The following questions are answered. Are these HMEs equivalent under some conditions? Are some of the properties more general than others? Why do the theoretical studies and empirical studies obtain inconsistent results?

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1111/pirs.12046

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL  

This paper incorporates heterogeneous demand elasticities and the quality/skill complementarity of production in a footloose capital model in order to explain the spatial selection of firms with differentiated quality. We find that when trade becomes freer, high-quality firms agglomerate in the region that accommodates more high-skilled labor, whereas low-quality firms move to the region that hosts more low-skilled labor. If trade freeness is high, the spatial separation of high- and low-quality firms occurs. This paper also points out the positive effect of integration on welfare owing to the specialization of product quality.

DOI： 10.1111/ijet.12035

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.jmateco.2013.11.007

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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

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J-GLOBAL

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Hitotsubashi University  

In this paper, we explore the interaction between taxation and a local public good (LPG) to see how it impacts the spatial pattern in the framework of new economic geography (NEG). In the benchmark case of a pure LPG, the system displays a similar location pattern to the existing NEG taxation model, although the tax reduces the market size of manufactured goods. However, when we consider the inherent congestion of an LPG, we find a new agglomeration force due to the demand of the LPG and a new dispersion force due to its congestion.As a result of their interaction, the congestability is crucial in determining the spatial location pattern.

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CiNii Books

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ACADEMIC PRESS INC ELSEVIER SCIENCE  

Takatsuka, Hajime, and Zeng, Dao-Zhi-Trade liberalization and welfare: Differentiated-good versus homogeneous-good markets
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.J. Japanese Int. Economies 26 (3) (2012) 308-325. Graduate School of Management, Kagawa University, Saiwai-cho 2-1, Takamatsu, Kagawa 760-8523, Japan: Graduate School of Information Sciences, Tohoku University, Aoba 6-3-09, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan: Center for Research of Private Economy, Zhejiang University, Zheda Road 38, Hangzhou, Zhejiang 310027, China. (C) 2012 Elsevier Inc. All rights reserved.

DOI： 10.1016/j.jjie.2012.05.003

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

Tourism generates considerable income and employment in host countries and regions, which substantially improves local economies. Meanwhile, the manufacturing sector remains the most important part in regional and national economies. This paper investigates their interdependence through a general-equilibrium analysis. On the one hand, a tourism boom is pro-industrialization because the income generated by tourism attracts more manufacturing firms and, on the other hand, de-industrialization for attracting labour from the manufacturing sector. We clarify conditions of trade balances in three sectors. The welfare analysis clarifies conditions for the smaller country to be better off, and conditions for the equilibrium to be optimal. © 2010 Japanese Economic Association.

DOI： 10.1111/j.1468-5876.2010.00518.x

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL  

This paper investigates the joint impact of the first nature and the second nature forces on industry location. Toward this aim, we develop a two-region new economic geography model where local factor congestion and location advantages compete with demand linkages and product market crowding. In particular, we study the case of absolute location advantage in a single industry model and the case of comparative advantages in a two-industry model. We characterize the structure of industries and discuss the possibilities of catastrophic changes, endogenous industrial asymmetries and specialization. We find that absolute location advantage are associated with a smooth agglomeration process and comparative advantages with a catastrophic process.

DOI： 10.1111/j.1467-9787.2010.00672.x

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.jue.2009.11.002

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ACADEMIC PRESS INC ELSEVIER SCIENCE  

This paper examines the pollution haven hypothesis using a spatial-economy model of two countries and two sectors. The manufacturing sector generates cross-border pollution which reduces cross-sectoral productivity of agricultural goods, and lowers local income. We derive a demand-reducing effect that discourages firms to move to the country with laxer environmental regulations, in the absence of any comparative advantage. Our analysis also demonstrates that manufacturing agglomeration forces can alleviate the pollution-haven effect: a pollution haven may not arise if environmental regulation is slightly more stringent in the larger country. © 2009 Elsevier Inc. All rights reserved.

DOI： 10.1016/j.jeem.2008.09.003

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J-GLOBAL

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：WILEY-BLACKWELL PUBLISHING, INC  

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.

DOI： 10.1111/j.1467-9787.2008.00588.x

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1111/j.1468-5876.2008.00454.x

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1111/j.1467-9396.2007.00712.x

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ACADEMIC PRESS INC ELSEVIER SCIENCE  

The Tiebout hypothesis (residential choice depends solely on local public goods) is extensively applied to explain geographic segregation, and the related literature finds that residents are segregated according to their heterogeneous preferences for public goods. This paper further examines the heterogeneous preferences for private goods in a spatial economy without public goods. Specifically, we employ a new economic geography framework in which the heterogeneous preferences of mobile workers on manufactured goods are incorporated. The rigorous general equilibrium analysis conducted here shows that the increasing-returns technology and monopolistic competition form a mechanism endogenously leading to persistent residential segregation. There is an evolving path with decreasing transport costs in which the two types of mobile workers are segregated, while two industries evolve from dispersion to agglomeration. (C) 2007 Elsevier Inc. All rights reserved.

DOI： 10.1016/j.jue.2007.02.004

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

A policy equilibrium is defined, and its properties investigated, for conflicts with more than two decision makers (DMs). A fundamental construction is the metarational tree, which expresses DMs' interactions as sequences of rounds, each consisting of an initial move by the focal DM followed by countermoves by the opponents. Using the metarational tree, the stability definitions of the graph model for conflict resolution can be adapted to apply to policies. These generalized metarational stabilities are shown to generalize Nash, general metarational, and symmetric metarational stabilities. Relationships among generalized metarationalities are derived, as are their connections with policy equilibria. Finally, the refinement that allows only credible moves (moves that are in the immediate interest of the mover) produces a new family of credible generalized metarational stabilities that generalizes the concept of sequential stability in the graph model. © 2007 IEEE.

DOI： 10.1109/TSMCA.2007.897704

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1093/aler/ahm012

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/978-3-540-68660-6_29

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/s10683-006-9146-9

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

A metarational tree is defined within the graph model for conflict resolution paradigm, providing a general framework within which rational behavior in models with two decision makers (DMs) can be described more comprehensively. A new definition of stability for a DM that depends on the total number, h, of moves and counter-moves allowed is proposed. Moreover, the metarational tree can be refined so that all moves must be unilateral improvements, resulting in a new set of stability definitions for each level of the tree. Relationships among stabilities at various levels of the basic and refined trees are explored, and connections are established to existing stability definitions including Nash stability, general metarationality, symmetric metarationality, sequential and limited-move stability, and policy equilibria. © 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.dam.2006.04.021

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

Recently, an amendment to final-offer arbitration (AFOA) was proposed to improve the well-known final-offer arbitration (FOA): AFOA is powerful enough to overcome the uncertainty about the arbitrator's notion of a fair settlement, if both disputants are risk neutral. This paper further examines the behavior of AFOA when two disputants are not risk neutral, by use of an existing concept of contract zone and a newly proposed concept of convergent-offer zone. The result is that AFOA is riskier than other existing procedures, therefore more powerful to induce an agreement between risk-averse disputants. © 2006 Elsevier Inc. All rights reserved.

DOI： 10.1016/j.irle.2006.08.003

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：SPRINGER  

In the literature of new economic geography, it is observed that the manufacturing sector disperses because of high transportation costs, agglomerates for intermediate transportation costs, and redisperses for low transportation costs. This paper examines a model with multiple manufacturing industries and finds that the redispersion process is different from the dispersion process. More precisely, there is at most one industry that disperses in the redispersion process while all industries disperse in the dispersion process. Furthermore, it is shown that the interaction of demand, increasing returns, and transportation costs is enough to derive a separating equilibrium where at least two industries agglomerate in different regions. © Springer-Verlag 2006.

DOI： 10.1007/s00168-005-0037-3

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：SPRINGER WIEN  

This note explores the determinants of intra-industry trade by extending the standard Chamberlinian-Ricardian monopolistic competition trade model (e.g., Krugman, 1979) to have a continuum of industries (e.g., Dornbusch et al., 1977). It shows that the degree of cross-country technical differences among industries plays an important role as a determinant of trade within each industry.

DOI： 10.1007/s00712-005-0168-0

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：OXFORD UNIV PRESS  

We study the effects of a decrease in inter-city transport costs on the spatial distribution of population in a multi-regional economy, when a rise in the regional population generates higher urban costs. Holding the number of cities constant, as transport costs are reduced gradually from a very high level to a very low level, there is a first phase in which large cities grow while small cities shrink, a second phase in which both large and small cities grow while medium size cities shrink, and a third phase in which large cities shrink while small cities grow. Furthermore, when the number of cities is allowed to vary as transport costs are reduced from large to small values, it first decreases and then increases. © The Author (2005). Published by Oxford University Press. All rights reserved.

DOI： 10.1093/jnlecg/lbh060

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

In many developing countries, agriculture hires at least as many workers as manufacturing industries. We investigate an economic geography model in which agricultural goods are costly to transport and in which manufactures hire labor from the local agricultural sector as unskilled labor. Our conclusions show that the parameters in the agricultural sector are crucial to determine the spatial configuration of economic activity. We provide an analytic treatment to the model. The location equilibria are compared with the first and second best outcomes. © 2004 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.jdeveco.2004.03.002

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：SPRINGER  

A new approach to policy analysis is formulated within the framework of the graph model for conflict resolution. A policy is defined as a plan of action for a decision maker (DM) that specifies the DM's intended action starting at every possible state in a graph model of a conflict. Given a profile of policies, a Policy Stable State (PSS) is a state that no DM moves away from (according to its policy), and such that no DM would prefer to change its policy given the policies of the other DMs. The profile of policies associated to a PSS is called a Policy Equilibrium. Properties of PSSs are developed, and a refinement is suggested that restricts DMs to policies that are credible in that they are in the DM's immediate interest. Relationships with existing stability definitions in the graph model for conflict resolution are then explored. © Springer 2005.

DOI： 10.1007/s11238-005-2459-x

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：BLACKWELL PUBLISHERS  

Asymptotic stability of equilibrium is often difficult to know when the number of variables exceeds four, since all eigenvalues of the Jacobian matrix are not analytically solvable. However, we obtain stability conditions for a general class of migration dynamics without computing eigenvalues. We show that a spatial equilibrium is stable in the presence of strong congestion diseconomies, but unstable in the presence of strong agglomeration economies. We also show existence of a stable equilibrium in the case of negligible interregional externalities, which is applicable to club goods, local public goods, and new economic geography. © Blackwell Publishing, Inc. 2004.

DOI： 10.1111/j.0022-4146.2004.00352.x

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掲載種別：研究論文（学術雑誌）  

This note explores the determinants of trade patterns by extending a Chamberlinian-Ricardian monopolistic competition trade model to have a larger number of industries as did Dornbush, Fischer and Samuelson (1977). It will be shown that the degree of cross-country technical differences among industries plays an important role as a determinant of trade within each industry.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

Final-offer arbitration (FOA) was proposed to settle a dispute between two disputants. Although FOA was proposed to induce two disputants to reach an agreements by themselves, FOA fails to achieve the fulfillment, when disputants have incomplete information about the arbitrator's notion of a fair settlement. This paper proposes a new arbitration procedure, which is a simple amendment to FOA that lets the arbitration settlement be determined by the loser's offer if the offers diverge. We show that the offers converge in a unique pure strategy Nash equilibrium without any additional condition. We also provide two methods to prevent an extreme arbitration result, in case the offers do not converge for some reasons. © 2003 Elsevier Science B.V. All rights reserved.

DOI： 10.1016/S0165-4896(03)00005-2

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

The concept of a policy is developed within the framework of the graph model for conflict resolution. More specifically, a policy is defined as an action plan from every possible state in a conflict for each player. A state forms what is called a Policy Stable State (PSS) if every player in a game does not prefer to move to another state given the other players' policies. The policies that cause a PSS constitute a policy equilibrium. Moreover, a refinement to PSS is suggested in order to take into account credible responses by players. Relationships with existing stability concepts in the graph model for conflict resolution are explored.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

This paper provides a theoretical analysis of the spatial equilibrium stability of a deterministic model among n regions. Inspired by the necessary condition of [Environment and Planning 18 (1986) pp. 1375-1389], this paper provides a set of sufficient conditions to ensure such stability. Although the model used is basic and simple, this paper presents a complete theoretical analysis and derives concise results with very intuitive explanations. © 2002 Elsevier Science B.V. All rights reserved.

DOI： 10.1016/S0166-0462(01)00072-2

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

In this paper, dual exponential possibility distributions, namely, upper and lower exponential possibility distributions, are identified from the given data to characterize a decision-maker's knowledge. A decision group's knowledge can be represented by a set of such dual possibility distributions. The inherent diversity of knowledge among decision-makers is characterized by a conflict index. A conflict resolution model is proposed based on the conflict index, which integrates multiple possibility distributions identified into a new one to represent compromised knowledge of a decision group. As an application, a portfolio selection problem with multiple decision-makers is considered.

DOI： 10.1109/TSMCA.2002.807045

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

DOI： 10.1111/1475-3995.00329

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：KLUWER ACADEMIC PUBL  

This paper proposes a new criterion to evaluate algorithms for cake division by the number of resulting pieces. Then, inspired by the idea of "cut-and-choose", we present "mark-choose-cut" algorithms for fair and strongly fair cake division problems. They are game-theoretic algorithms. The number of resulting pieces is bounded by 2 x 3(n-2) + 1 and 4 x 3(n-2) + 1, for fair and strongly fair division respectively.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：INFORMS  

This paper studies the complexity of computing solution concepts for a cooperative game, called the minimum base game (MBG) (E, c), where its characteristic function c : 2E → R-fraktur sign is defined as c(S) = (the weight w(B) of a minimum weighted base B ⊆ S), for a given matroid M = (E, ℐ) and a weight function w : E → R-fraktur sign. The minimum base game contains, as a special case, the minimum spanning tree game (MSTG) in an edge-weighted graph in which players are located on the edges. By interpreting solution concepts of games (such as core, τ-value and Shapley value) in terms of matroid theory, we obtain: The core of MBG is nonempty if and only if the matroid M has no circuit consisting only of edges with negative weights; checking the concavity and subadditivity of an MBG can be done in oracle-polynomial time; the τ-value of an MBG exists if and only if the core is not empty, the τ-value of MSTG can be computed in polynomial time while there is no oracle-polynomial algorithm for a general MBG; computing the Shapley value of an MSTG is #P-complete, and there is no oracle-polynomial algorithm for computing the Shapley-value of an MBG.

DOI： 10.1287/moor.22.1.146

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

This paper proposes a new arbitration rule, double-offer arbitration (DOA), which aims to improve final-offer arbitration (FOA), a well-known method to settle a dispute between two disputants. Under DOA, each disputant makes double offers, primary and secondary, for settlement. If the offers of two disputants do not converge, the arbitrator evaluates the two double offers by a criterion function, then adopts the primary offer of the disputant with a better criterion value. In the literature, it has been shown that under some conditions, a Nash equilibrium exists under FOA in which the offers diverge. However, we show that, under similar conditions, there is also a Nash equilibrium under DOA, in which the secondary offers of two disputants converge. Therefore, the arbitrator's presence in the arbitration process is necessary, but not his/her actual choice.

DOI： 10.1016/0165-4896(95)00805-5

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記述言語：英語   出版者・発行元：IEEE  

The concept of a policy is developed within the framework of the graph model for conflict resolution. Afore specifically, a policy is defined as an action plan from every possible state in a conflict for each player. A state forms what is called a Policy Stable State (PSS) if every player in a game does not prefer to move to another state given the other players' policies. The policies that cause a PSS constitute a policy equilibrium. Moreover, a refinement to PSS is suggested in order to take into account credible responses by players. Relationships with existing stability concepts in the graph model for conflict resolution are explored.

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記述言語：英語   出版者・発行元：IEEE  

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記述言語：日本語   出版者・発行元：香川大学  

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記述言語：英語   出版者・発行元：京都大学  

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出版者・発行元：Kluwer Academic Press  

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記述言語：日本語   出版者・発行元：一般社団法人 日本応用数理学会  

We survey the recent research in the field of cake divisions and their procedures. The question is how to divide a cake among n players, so that a certain fairness is achieved, where players have individual measures on the cake, and each player only knows his own measure. The model has very wide applications, such as dividing up the property in an estate, and even in determining the border in an international dispute. We first review mathematical definitions of various concepts of fairness. Although the existence of fair divisions is proved under some mathematical conditions, their dividing procedures are not known for all cases. We summarize several existing division procedures and classify them according to their methods and purposes. Finally, we mention some related topics and describe possible future research directions.

DOI： 10.11540/bjsiam.9.1_12

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記述言語：日本語   出版者・発行元：一般社団法人電子情報通信学会  

フローゲームは, 流出入点(s, t)をもつネットワークNに対して次のように定義される協力ゲーム(I, v)である.各プレーヤーi∈IはNのある辺の部分集合E_>iを所有し, プレーヤーの部分集合I'⫅Iに対する特性関数値v(I')はそれらのプレーヤーの所有する辺集合∪_<i∈I'>E_iのみを使って流出点sから流入点tへ流せるフローの最大値と定められる.本論文では, 各プレーヤーがちょうど1本の辺をもつフローゲームを初等的と呼び, 初等的フローゲームが凸ゲームになるためのネットワークNの必要十分条件を明らかにする.この結果に基づけば, 与えられた初等的フローゲームが凸ゲームであるかどうかを多項式時間で判定することができる.

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記述言語：英語   出版者・発行元：公益社団法人日本オペレーションズ・リサーチ学会  

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記述言語：英語   出版者・発行元：香川大学  

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記述言語：英語   出版者・発行元：公益社団法人日本オペレーションズ・リサーチ学会  

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記述言語：英語   出版者・発行元：公益社団法人日本オペレーションズ・リサーチ学会  

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記述言語：日本語   出版者・発行元：社団法人日本オペレーションズ・リサーチ学会  

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記述言語：英語   出版者・発行元：香川大学  

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記述言語：英語   出版者・発行元：社団法人日本オペレーションズ・リサーチ学会  

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記述言語：英語   出版者・発行元：公益社団法人日本オペレーションズ・リサーチ学会  

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記述言語：日本語   出版者・発行元：社団法人日本オペレーションズ・リサーチ学会  

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記述言語：英語   出版者・発行元：一般社団法人電子情報通信学会  

本論文では,重み関数ω:E〓Rを持つマトロイドM=(E,I)上で最小基ゲーム(E,c)を導入し,協力ゲームにおける解の概念に対する計算の複雑性について議論する.ここで,最小基ゲームの特性関数c:2^E〓Rは,c(S)=S⊆E上の基(base)の最小重みとして定義される.最小基ゲームは,その特殊な場合として,辺に重みを持つグラフ上の辺にプレイヤーが位置するような最小生成木ゲームを含む.コア,シャープレイ値などの解の概念をマトロイド理論におけるいくつかの問題に帰着することにより次の結果を得た.(1)最小基ゲーム(E,c)のコアが非空である必要十分条件は,マトロイドMが負の重みを持つ要素のみから成るサーキットを持たないことである.コアが空でないとき,E上の任意の最小基から,コアに属する1つの配分が得られる.(2)最小基ゲームの劣加法性あるいは,凹性は(独立判定性)オラクル多項式時間で調べられる.(3)最小基ゲームのτ-値が定義できる必要十分条件は,マトロイドMが負の重みを持つ要素のみから成るサーキソトを持たないことである。最小生成木ゲームのτ-値は,多項式時間で求めることができる.一方,最小基ゲームのτ-値を計算するオラクル多項式時間アルゴリズムは存在しない.(4)最小生成木ゲームのシャープレイ値の計算は,#P-完全であり,最小基ゲームのシャープレイ値を計算するオラクル多項式時間ア...

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記述言語：英語   出版者・発行元：社団法人日本オペレーションズ・リサーチ学会  

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記述言語：英語   出版者・発行元：京都大学  

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記述言語：英語   出版者・発行元：PERGAMON PRESS LTD  

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記述言語：英語   出版者・発行元：社団法人日本オペレーションズ・リサーチ学会  

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記述言語：英語   出版者・発行元：社団法人日本オペレーションズ・リサーチ学会  

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記述言語：英語   出版者・発行元：公益社団法人日本オペレーションズ・リサーチ学会  

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記述言語：英語   出版者・発行元：公益社団法人日本オペレーションズ・リサーチ学会  

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