持続可能な社会・経済研究会セミナーシリーズ
What's Research Workshop on Sustainable Society at Musashi University?
現在、経済学、政治科学など、社会科学全般で様々な分野で持続可能な社会に関して政策提言が行われていますが、それぞれの提案されている施策の相互作用や関係性を十分に理解する統合的な研究活動はいまだに不十分と言わざるを得ません。真の持続可能な社会実現のためにも、国際的な研究活動をもととした多角的な分析視野と、学際的な研究知見を併せ持つ、より俯瞰的な研究が社会的に要請されていると言えます。そのため持続可能性を担保する社会・経済実現のため、学術領域を越えた議論を創発するとともに、国際的な研究協力の加速化を目的として、武蔵大学における研究会として、本研究会は設立されました。
Currently, policy recommendations regarding a sustainable society are being made in various fields within social sciences such as economics and political science. However, it must be said that integrated research activities, which fully understand the interactions and relationships between the proposed measures, are still insufficient. For the realization of a truly sustainable society, a more comprehensive research approach is socially demanded, which combines multidimensional analysis based on international research activities with interdisciplinary research findings. Therefore, this research group was established at Musashi University with the aim of fostering cross-disciplinary discussions to ensure sustainability in society and the economy, as well as to accelerate international research cooperation.
セミナー幹事:神林龍、田中健太、広田啓朗、釣雅雄、笠松怜史、佐藤宇樹、原朋弘、阿部景太
Workshop organizers: Ryo Kambayashi, Kenta Tanaka, Haruaki Hirota, Masao Tsuri, Satoshi Kasamatsu, Takaki Sato, Tomohiro Hara, Keita Abe
発表言語 (Language):日本語/English (スピーカーが選択/Speaker's choice)
高橋 秀典 (京都大学経済研究所)
Hidenori Takahashi (Institute of Economic Research, Kyoto University)
日時 date:2026年4月2日(木 Thurs) Google Calendar
時間 time:16:30-18:00
タイトル title:Bidding Too Low to Win and Too High to Lose? The Roles of Secret Floor Prices in Renegotiation of Incomplete Contracts
発表言語 language:TBA
会場 venue:教授研究棟 03-G会議室 Room 03-G in Research Building
概要 abstract :Renegotiation for contract adjustments is pervasive in procurement auctions. Yet, the associated adaptation costs are hard to measure under the standard auction settings since initial contracts may be specified endogenously. We study construction contracts awarded through a secret floor price rule and build a model that links bidding strategies to subsequent renegotiation for contract adjustments. We show that a secret floor price induces a kinked bidding strategy and enables identification of adaptation costs by breaking the endogeneity of the initial contract design through random contract allocation. We estimate the welfare implications of adaptation costs while jointly recovering the other primitives that would otherwise confound the welfare assessment. Counterfactual simulations confirm the economic as well as econometric roles of the secret floor price rule.
鎌田 拓馬 (大阪大学)
Takuma Kamada (OSIPP, The University of Osaka)
日時 date:2026年4月16日(木 Thurs) Google Calendar
時間 time:16:30-18:00
タイトル title:Blessing or Curse for Organized Crime? The Long-Term Effects of the Energy Transition from Coal to Oil on the Yakuza
発表言語 language:TBA
会場 venue:教授研究棟 03-G会議室 Room 03-G in Research Building
概要 abstract :This study investigates whether industry-specific shocks propagate through the broader criminal economy when specific criminal groups are embedded in affected sectors, generating persistent changes in organized crime. It focuses on Japanese organized crime, the yakuza, and the 1960s energy transition from domestic coal to imported oil, which triggered widespread mine closures. Some yakuza groups operated in coal mining as labor brokers, protection racketeers, or contractors. I document persistence in yakuza-related conflicts following the energy transition, with greater effects in areas with historical presence of mining-linked yakuza groups and alternative economic rents. Underlying this persistence, the composition of local organized crime shifted following the transition: arrests of mining-linked yakuza fell while arrests of non-mining yakuza rose as rival yakuza groups entered coal-affected areas to contest territory. In the 21st century, areas more exposed to transition-induced mining job losses exhibit substantially higher yakuza presence. However, yakuza exclusion ordinances enacted in the 2010s partially broke this persistent cycle by restricting organizational reallocation across all yakuza groups. Taken together, negative industry-specific shocks can trigger territorial restructuring that hardens into persistent criminal geography.
井上 裕介 (京都大学経済研究所附属 先端政策分析研究センター)
Yusuke Inoue (Kyoto Institute of Economic Research)
日時 date:2026年5月7日(木 Thurs) Google Calendar
時間 time:16:30-18:00
タイトル title:TBA
発表言語 language:TBA
会場 venue:教授研究棟 03-G会議室 Room 03-G in Research Building
概要 abstract :TBA
佐藤 進 (一橋大学経済研究所)
Susumu Sato (Institute of Economic Research, Hitotsubashi University)
日時 date:2026年5月21日(木 Thurs) Google Calendar
時間 time:16:30-18:00
タイトル title:TBA
発表言語 language:TBA
会場 venue:教授研究棟 03-G会議室 Room 03-G in Research Building
概要 abstract :TBA
阪本 浩章 (神戸大学経済学研究科)
Hiroaki Sakamoto (Graduate School of Economics, Kobe University)
日時 date:2026年5月28日(木 Thurs) Google Calendar
時間 time:16:30-18:00
タイトル title:TBA
発表言語 language:TBA
会場 venue:教授研究棟 03-G会議室 Room 03-G in Research Building
概要 abstract :TBA
善如 悠介 (神戸大学経営学研究科 )
Yusuke Zennyo (Graduate School of Business Administration, Kobe University)
日時 date:2026年6月4日(木 Thurs) Google Calendar
時間 time:16:30-18:00
タイトル title:TBA
発表言語 language:TBA
会場 venue:教授研究棟 03-G会議室 Room 03-G in Research Building
概要 abstract :TBA
佐々木 優 (東京大学大学院経済学研究科・経済学部)
Yu Sasaki (Graduate School of Economics and the Faculty of Economics, University of Tokyo)
日時 date:2026年6月11日(木 Thurs) Google Calendar
時間 time:16:30-18:00
タイトル title:TBA
発表言語 language:TBA
会場 venue:教授研究棟 03-G会議室 Room 03-G in Research Building
概要 abstract :TBA
鈴木 崇文 (愛知淑徳大学ビジネス学部 )
Takafumi Suzuki (Faculty of Business, Aichi Shukutoku University)
日時 date:2026年6月25日(木 Thurs) Google Calendar
時間 time:16:30-18:00
タイトル title:TBA
発表言語 language:TBA
会場 venue:教授研究棟 03-G会議室 Room 03-G in Research Building
概要 abstract :TBA
Thomas Monnier (一橋大学社会科学高等研究院 )
Thomas Monnier (Hitotsubashi Institute for Advanced Study)
日時 date:2026年7月2日(木 Thurs) Google Calendar
時間 time:16:30-18:00
タイトル title:TBA
発表言語 language:ENG
会場 venue:教授研究棟 03-G会議室 Room 03-G in Research Building
概要 abstract :TBA
向山 敏彦 (ジョージタウン大学 経済学部)
Toshihiko Mukoyama (Department of Economics, Georgetown University)
日時 date:2026年7月23日(木 Thurs) Google Calendar
時間 time:16:30-18:00
タイトル title:TBA
発表言語 language:TBA
会場 venue:教授研究棟 03-G会議室 Room 03-G in Research Building
概要 abstract :TBA