2025.9.4
OSIPP基幹講座教員の8月の研究業績をご紹介します。
・赤井伸郎 先生
・丸山士行 先生
・中嶋啓雄 先生
・前川和歌子 先生
Nobuo Akai （論文）
Naruki Notsu, Haruaki Hirota, Nobuo Akai(2025) “Inter-municipal cooperation and tax enforcement capabilities”, Regional Science and Urban Economics, Volume 114, September 2025 (査読あり)
https://www.sciencedirect.com/science/article/abs/pii/S0166046225000547
Abstract: This study examines the effects of enhancing administrative tax enforcement on the tax gap, focusing on inter-municipal cooperation (IMC). IMC involves collaborative tax collection efforts among multiple municipalities and promotes the aggregation of tax collection resources and expertise, improving tax enforcement. Using the time variation in IMC creation across municipalities, we show that IMC substantially reduces the tax gap by reinforcing tax enforcement in local governments. Our findings suggest that enhanced administrative capability in tax enforcement can be an effective tool against noncompliance in ways other than facilitating voluntary compliance.
Shiko Maruyama （論文）
McGinn, Eamon, Shiko Maruyama (2025) “Why Waste Your Vote? Informal Voting in Compulsory Elections in Australia”, Economic Record, First Published 18 June 2025 (査読あり)
https://onlinelibrary.wiley.com/doi/10.1111/1475-4932.12877
Abstract: In Australia, where voting is compulsory, around 5 per cent of votes are informal, not counting toward the outcome. Between 2004 and 2016, 32 percent of electorates reported more informal votes than votes in the margin between the winner and runner-up. Using exogenous changes in electorate boundaries, we test two hypotheses from the literature. We find the pivotal voter theory unsupported, except that better-educated voters respond to the margin more strategically. However, we do find that more candidates cause more informal votes. This choice-overload effect is observed regardless of voters’ education, indicating the role of time and effort cost rather than cognitive difficulty.
中嶋啓雄 （論文）
「第二次トランプ政権の西半球政策――パナマ運河再獲得、カナダ併合、グリーンランド領有をめぐって」『海外事情』73巻4号（2025年7・8月）、18～31頁
https://www.takushoku-kaiken.net/journal/index.html
概要：第二次トランプ政権の西半球政策、具体的にはパナマ運河再獲得、カナダ併合、グリーンランド領有の主張に関して、それぞれの問題の歴史的経緯や文化的背景を踏まえ、その是非を論じた。
Wakako Maekawa（著書）
Chapter Title：Renewable Energy, Development, and Peace: Does Renewable Energy Have Pacifying Effects on Civil Wars?, Green Energy Investments and Economic Development, Edited by Ramesh Chandra Das, Published July 24, 2025 by Palgrave Macmillan
https://link.springer.com/chapter/10.1007/978-981-96-6166-4_11
Abstract: Many countries have begun investing in green energy as an intervention to enable sustainable development and adapt to climate change. This shift, including donor-led intervention, is also occurring in conflict-prone regions, prompting the following question: does renewable energy have pacifying effects on civil war? This study investigates the effect of renewable energy on civil war occurrence by unpacking its direct and indirect mechanisms. It argues that renewable energy does not necessarily reduce civil wars directly because, despite wider accessibility to profits compared to traditional resources, which reduces individual motivation to fight for earning purposes, the availability of profits enhances the feasibility of rebellion by securing funds. Accessibility to electricity also enhances the feasibility of rebellion by enabling potential insurgents to overcome operational challenges at nighttime when insurgents normally come out. It facilitates gathering and loading weapons in places such as mountainous terrain where traditionally electricity access had been weak. Instead of direct mechanism, renewable energy indirectly reduces civil wars by boosting economic development and democratization. Using renewable energy data for 160 countries from 1991 to 2016, the empirical analysis showed that renewable energy decreases the number of active rebel groups and civil wars. However, a mediation analysis revealed that this effect occurs through the indirect mechanism of economic development but not through democratization. These findings imply that green energy investment that is compatible with economic development is crucial for peace.
赤井伸郎 （その他の記事）
「インバウンド増加と地域政策」『十字路』日本経済新聞（2025年8月14日付夕刊）
https://www.nikkei.com/article/DGXZQOUF0489B0U5A800C2000000/
概要：インバウンド（訪日外国人）客が1月から6月までの半年で累計2000万人を突破し過去最速で増え続けている。インバウンドの増加が持続的に地域経済に貢献していくためには、地産地消の視点で、インバウンドの滞在がもたらす消費効果を確実に地域の雇用創出や所得向 上につなげる仕組みづくりが必要である。地元住民が普通だと思う地域文化、景観、歴史に強い関心を持つ外国人も多い。経済効果を生み出せるポテンシャルは 全国に備わる。環境やインフラにかかる負荷、地域物価も含めた経済の変化への対策も不可欠である。異文化との共生に住民が良い将来を思い描けるかどうかも鍵となる。