記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：World Scientific Publishing Co. Pte Ltd  

If an aggregative game satisfies the generalized Hahn conditions, then there exists a unique Nash equilibrium which may not be interior and is globally asymptotically stable under two alternative continuous adjustment processes with non-negativity constraints.

DOI： 10.1142/S0219198914500145

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記述言語：英語   掲載種別：研究論文（大学，研究機関等紀要）  

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記述言語：英語   掲載種別：研究論文（大学，研究機関等紀要）  

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記述言語：英語   掲載種別：研究論文（大学，研究機関等紀要）   出版者・発行元：新潟大学経済学会  

Yamazaki (2009) proves that if each player's measure of absolute risk aversion is non-increasing in his or her wealth, then there exists a unique pure-strategy Nash equilibrium in a general rentseeking game with risk-averse players, where their attitude toward risk and production functions for lotteries can differ among players. We examine cumulative best replies of players in the game to prove the same result, while Yamazaki (2009) studies share functions of the players to prove the result.

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その他リンク： http://hdl.handle.net/10191/12631

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  

This article proves that if each player's measure of absolute risk aversion is nonincreasing in his/her wealth, then there exists a unique pure-strategy Nash equilibrium in the general rent-seeking game, where risk-averse players can coexist with risk-neutral players, attitude toward risk can differ among players, and concave production functions for lotteries are not necessarily the same among players.

DOI： 10.1007/s11127-009-9396-0

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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：ELSEVIER SCIENCE BV  

A sufficient condition is derived for the global stability of a unique interior Nash equilibrium in an aggregative game. The condition is applied to investigate the global stability of the Nash - Cournot equilibrium in Cournot oligopoly without product differentiation and that of the Nash equilibrium in rent-seeking games. (c) 2007 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.jedc.2007.05.003

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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：BLACKWELL PUBLISHING  

There can be three types of heterogeneity among players in a rent-seeking contest. First, effectiveness of player's effort on the winning probabilities may differ among players. Secondly, players may evaluate the rent or prize of the rent-seeking contest differently. Thirdly, players may face different financial constraints. This article proves under standard assumptions in the literature that there exists a unique pure-strategy Nash equilibrium in a general asymmetric rent-seeking contest with these three types of heterogeneity among players.

DOI： 10.1111/j.1467-9779.2008.00364.x

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記述言語：日本語   掲載種別：研究論文（大学，研究機関等紀要）   出版者・発行元：新潟大学経済学会  

道路等の交通社会資本は公共財あるいは準公共財であり，交通サービスの供給には外部性と不完全競争の問題を伴うことが良く知られている。それ故に交通サービスの供給に対しては政府あるいは公的主体の関与が正当化される。政府の財政補助（公共負担）のあり方が交通社会資本の権威に与える影響は非常に大きいが，交通サービス供給者の異質性により財政補助に歪みが生じる可能性がある。本稿は公共交通と私的交通の二つの選択枝がある交通モード選択モデルにおける実現可能な最適解を考えてみる。また，実現可能な最適解と比較することにより，政府の偏った財政補助の影響について考察する。

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その他リンク： http://hdl.handle.net/10191/6630

記述言語：英語   掲載種別：研究論文（学術雑誌）  

We analyze the global stability of the equilibria in Bertrand and Cournot duopolies. Assuming a set of sufficient conditions for the global stability of the Bertrand duopoly equilibrium, we derive additional conditions which are sufficient for the global stability of the Cournot duopoly equilibrium. We use the relationships among the first and second order partial derivatives of the ordinary and inverse demand functions in deriving our results.

DOI： 10.1142/S0219198904000265

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

If domestic firms lobby for protection, the tariff rate is a public good to all domestic firms, whether they engage in lobbying or not. This paper analyzes how the endogenous tariff rate as a public good depends on the group size in two-stage lobbying models. The result depends not only on whether domestic firms lobby cooperatively or not, but also on whether domestic firms incur indirect lobbying costs or not. This paper shows that if free riding is not very serious and if the number of domestic firms is small compared to the number of foreign firms, entry of a domestic firm is likely to increase the equilibrium tariff rate. © Blackwell Publishing Ltd 2004.

DOI： 10.1111/j.1467-9396.2004.00433.x

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記述言語：英語   掲載種別：研究論文（大学，研究機関等紀要）  

Anas and Arnott (1991) formulate an elegant housing market model. Anas and Amott (1996) derive the utilitarian social welfare function corresponding to the Anas-Amott model (1991). They make use of this function to analyze the Anas-Amott model. This paper shows some properties of this social welfare function.

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記述言語：英語   掲載種別：研究論文（大学，研究機関等紀要）  

Okuguchi and Yamazaki (1998) generalized Long and Soubeyran's lobbying model of protection. They also constructed a simple numerical example with the linear inverse demand and cost functions to illustrate a paradoxical result in which entry of a new domestic firm leads to an increase in the domestic incumbents' profits. This paper shows that the paradoxical result occurs even if cost functions are quadratic. Numerical examples in this paper, together with the one in Okuguchi and Yamazaki (1998), indicate that the paradoxical result is more likely if the number of domestic firms is small and if the number of foreign firms is large. JEL Classification Number: D43, D72, F13, L13

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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：慶應義塾大学  

First, we analyze the effects of a shift from specific to ad valorem taxation within Cournot oligopoly under general conditions on demand and cost functions. Second, we analyze the optimal Pigouvian tax rate for controlling emission of pollution within Cournot oligopoly also under general conditions. The second analysis is an adaptation of the analytical method adopted in the first analysis.

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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：慶應義塾大学  

A hierarchical Stackelberg model where firms' entry is sequential is formulated for price-adjusting oligopoly with product differentiation. The firms' equilibrium prices, outputs and profits are derived and compared in relationship to the order of the firms' entry into the market. These equilibrium values are also compared with those for the non-hierarchical Bertrand oligopoly where all firms' decisions are simultaneously made.

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記述言語：日本語   掲載種別：研究論文（大学，研究機関等紀要）  

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記述言語：日本語   掲載種別：研究論文（大学，研究機関等紀要）  

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記述言語：英語   会議種別：口頭発表（一般）  

開催地：Ljubljana, Slovenia  

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記述言語：英語   会議種別：口頭発表（一般）  

開催地：Toulouse, France  

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記述言語：英語   会議種別：口頭発表（一般）  

開催地：Seoul, Korea  

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記述言語：英語   会議種別：口頭発表（一般）  

開催地：Valencia, Spain  

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記述言語：英語   会議種別：口頭発表（一般）  

開催地：Rabat, Morocco  

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記述言語：英語   会議種別：口頭発表（一般）  

開催地：Chicago, IL, USA  

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記述言語：英語   会議種別：口頭発表（一般）  

開催地：Montreal, Canada  

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記述言語：英語   会議種別：口頭発表（一般）  

開催地：Torino, Italy  

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記述言語：英語   会議種別：口頭発表（一般）  

開催地：Buffalo, NY, USA  

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