Oishi Koji 大石晃史

Researcher Number	60814944
Affiliation (Current)	2025: 東京外国語大学, 現代アフリカ地域研究センター, 研究員
Affiliation (based on the past Project Information) *help	2022 – 2024: 東京外国語大学, 現代アフリカ地域研究センター, 研究員 2020 – 2022: 青山学院大学, 国際政治経済学部, 研究員 2018 – 2019: 国立情報学研究所, ビッグデータ数理国際研究センター, 特任研究員
Review Section/Research Field	Principal Investigator Basic Section 06020:International relations-related / Basic Section 25010:Social systems engineering-related Except Principal Investigator Basic Section 06020:International relations-related / Medium-sized Section 6:Political science and related fields
Keywords	Principal Investigator 紛争 / 感染症 / 国際関係論 / 数理モデル / ネットワーク / シミュレーション / フィールドワーク / ラテンアメリカ / 水資源 / 公共サービス … More / 社会運動 / 水紛争 / 地方分権 / 民営化 / インフラ / 公共財 … More Except Principal Investigator サイバーセキュリティ / 国際連合 / サイバーフィジカル融合 / 計算社会科学 / グローバル・ガバナンス / 紛争鉱物 / 紛争研究 / 紛争下の性暴力 / 紛争鉱物取引規制 / 資源採掘 / コンゴ民主共和国 / アフリカ / データ科学 / テキスト分析 / 国連 / 開発援助 / 持続可能性 / データサイエンス / ネットワーク科学 / 人間の安全保障 / グローバルガバナンス Less

Network science of conflict spreadingPrincipal Investigator
- Principal Investigator
  
  大石晃史
- Project Period (FY)
  2023 – 2026
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 06020:International relations-related
- Research Institution
  Tokyo University of Foreign Studies
Global Governance in the Age of Cyber-Physical Fusion: Toward Sustainable Peace
- Principal Investigator
  
  阪本拓人
- Project Period (FY)
  2022 – 2024
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 06020:International relations-related
- Research Institution
  The University of Tokyo
公共サービスをめぐる紛争の解決モデル：ラテンアメリカを事例としてPrincipal Investigator
- Principal Investigator
  
  大石晃史
- Project Period (FY)
  2020 – 2024
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 25010:Social systems engineering-related
- Research Institution
  Tokyo University of Foreign Studies
  Aoyama Gakuin University
Relations Between Minerals Extraction and Human Rights Violation in Conflict
- Principal Investigator
  
  Hanai Kazuyo
- Project Period (FY)
  2019 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 06020:International relations-related
- Research Institution
  The University of Tokyo
Governance for Sustainable Peace and Development: Interdisciplinary Study Based on Network Science and Data Science
- Principal Investigator
  
  Sakamoto Takuto
- Project Period (FY)
  2018 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Review Section
  
  Medium-sized Section 6:Political science and related fields
- Research Institution
  The University of Tokyo

All 2024 2023 2022 2021 2020 2019 2018

All Journal Article Presentation

[Journal Article] Evolution of global development cooperation: An analysis of aid flows with hierarchical stochastic blockmodels2022
- Author(s)
  K. Oishi, H. Ito, Y. Murase, H. Takikawa, and T. Sakamoto
- Journal Title
  
  PLoS ONE
  
  Volume: 17 Issue: 8 Pages: e0272440-e0272440
- DOI
  10.1371/journal.pone.0272440
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-20K04995, KAKENHI-PROJECT-21K03362, KAKENHI-PROJECT-21K18448, KAKENHI-PROJECT-21KK0247, KAKENHI-PROJECT-18H03606, KAKENHI-PROJECT-21H04390, KAKENHI-PROJECT-20H01563, KAKENHI-PROJECT-20J01060, KAKENHI-PROJECT-23K20638, KAKENHI-PROJECT-23K22087
[Journal Article] State of the Civil War in the Phantom State: Integration and Fragmentation among Armed Groups in the Central African Republic Since 20052022
- Author(s)
  Hosoi Tomohiro、Ito Hiroto、Oishi Koji
- Journal Title
  
  SSRN Electronic Journal
  
  Volume: 該当しない
- DOI
  10.2139/ssrn.4303666
- Open Access
- Data Source
  KAKENHI-PROJECT-23K22087
[Journal Article] Balanced-imbalanced transitions in indirect reciprocity dynamics on networks2021
- Author(s)
  Koji Oishi, Shuhei Miyano, Kimmo Kaski, and Takashi Shimada
- Journal Title
  
  Physical Review E
  
  Volume: 104 Issue: 2 Pages: 024310-024310
- DOI
  10.1103/physreve.104.024310
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03449, KAKENHI-PROJECT-18H03621, KAKENHI-PROJECT-19H01457, KAKENHI-PROJECT-20K04995, KAKENHI-PROJECT-20J01060
[Journal Article] Structural balance of alliance and rivalry networks in international relations2020
- Author(s)
  Koji Oishi and Kentaro Sakuwa
- Journal Title
  
  arXiv
  
  Volume: 巻号なし Pages: 1-10
- Open Access
- Data Source
  KAKENHI-PROJECT-18H03621
[Journal Article] 政治体間関係から生じる国際体系：複合政治体動態モデルによる一般的類型2018
- Author(s)
  光辻克馬、大石晃史、山影進
- Journal Title
  
  青山国際政経論集
  
  Volume: 101 Pages: 4-33
- Data Source
  KAKENHI-PROJECT-18H03621
[Presentation] Structural balance of alliance and rivalry networks in international relations2024
- Author(s)
  Koji Oishi and Kentaro Sakuwa
- Organizer
  AROB-ISBC-SWARM 2024
- Data Source
  KAKENHI-PROJECT-23K22087
[Presentation] Interference of Decentralization with PPP in the Water Sector and Shifting Equilibria in Service Quality and Tariffs: A Case Study of Mexico City2023
- Author(s)
  Rena Nishio, So Morikawa, and Koji Oishi
- Organizer
  International Association of Schools and Institutes of Administration (IASIA)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K04995
[Presentation] Governance of Regulators Regarding Water Services: The Impact of Political Interference on Regulation under Private Concession in Latin America2022
- Author(s)
  Rena Nishio, So Morikawa and Koji Oishi
- Organizer
  Lien Development Conference 2022
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K04995
[Presentation] Structural balance in international alliance and rivalry networks: Does the enemy of my enemy become my friend?2021
- Author(s)
  Oishi, K. and K. Sakuwa
- Organizer
  International Studies Association
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01457
[Presentation] Structural balance in international alliance and rivalry networks: Does the enemy of my enemy become my friend?2021
- Author(s)
  K. Oishi and K. Sakuwa
- Organizer
  The International Studies Association (ISA) Annual Convention 2021
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K04995
[Presentation] The Evolution of Global Development Cooperation: An Analysis with Stochastic Block Models2021
- Author(s)
  Takuto Sakamoto, Koji Oishi
- Organizer
  2021 Annual Convention of the Japan Association of International Relations (JAIR)
- Invited
- Data Source
  KAKENHI-PROJECT-18H03621
[Presentation] The evolution of global development cooperation: An analysis with stochastic block modelling2021
- Author(s)
  Sakamoto, T. and K. Oishi
- Organizer
  日本国際政治学会
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01457
[Presentation] Evolution of Actor Relations in the Water War Movement in Bolivia2021
- Author(s)
  Hiromi Makita, Atsushi Koyama, So Morikawa, and Koji Oishi
- Organizer
  The 79th Annual Midwest Political Science Conference
- Data Source
  KAKENHI-PROJECT-20K04995
[Presentation] The evolution of global development cooperation: An analysis with stochastic block modelling2021
- Author(s)
  T. Sakamoto and K. Oishi
- Organizer
  日本国際政治学会 2021 年度研究大会
- Data Source
  KAKENHI-PROJECT-20K04995
[Presentation] 国際政治における敵対と友好のネットワーク構造2020
- Author(s)
  大石晃史
- Organizer
  ネットワーク科学セミナー2020
- Data Source
  KAKENHI-PROJECT-18H03621
[Presentation] Computational Approaches to Politics and International Relations2020
- Author(s)
  Takuto Sakamoto and Koji Oishi
- Organizer
  European Research Center for Political Culture (EPCAM) Workshop, Bucharest, Romania
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03621
[Presentation] Network Analysis of Global Aid Flow and the Positions of UN Agencies and Offices2020
- Author(s)
  Koji Oishi
- Organizer
  Academic Council on the United Nations System (ACUNS) Annual Meeting, London, United Kingdom (held virtually)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03621
[Presentation] Evolution of alliance and rivalry networks in international relations2020
- Author(s)
  Koji Oishi and Kentaro Sakuwa
- Organizer
  NetSciX 2020
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01457
[Presentation] Signed network structure of international relations2020
- Author(s)
  Koji Oishi, Kentaro Sakuwa
- Organizer
  PaCSS and PolNet 2020 conference
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03621
[Presentation] Genealogical network analysis of social group evolution2020
- Author(s)
  Takayuki Hiraoka and Koji Oishi
- Organizer
  NetSciX 2020
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01457
[Presentation] Network analysis for the split and merger dynamics of armed groups2019
- Author(s)
  Koji Oishi
- Organizer
  Political Network Conference 2019
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03621
[Presentation] The split and merger dynamics of armed groups in the Democratic Republic of Congo2019
- Author(s)
  Koji Oishi
- Organizer
  Colloque du Cercle des Economistes Congolais
- Data Source
  KAKENHI-PROJECT-19H01457
[Presentation] Network Analysis for the Split and Merger Dynamics of Armed Groups2019
- Author(s)
  Koji Oishi
- Organizer
  ISA Annual Convention 2019
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03621
[Presentation] Evolution of alliance and rivalry networks in international relations2019
- Author(s)
  Koji Oishi and Kentaro Sakuwa
- Organizer
  The 8th International Conference on Complex Networks and their Applications
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03621
[Presentation] Genealogical network analysis of social group evolution2019
- Author(s)
  Koji Oishi and Takayuki Hiraoka
- Organizer
  Conference on Complex Systems 2019
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03621
[Presentation] Evolution of alliance and rivalry networks in international relations2019
- Author(s)
  Koji Oishi and Kentaro Sakuwa
- Organizer
  The 8th International Conference on Complex Networks and their Applications
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01457
[Presentation] Genealogical Network Analysis of Social Group Evolution2019
- Author(s)
  Koji Oishi and Takayuki Hiraoka
- Organizer
  Conference on Complex Systems 2019
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01457
[Presentation] Network analysis for the split and merger dynamics of armed groups2019
- Author(s)
  Koji Oishi
- Organizer
  Political Network Conference 2019
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01457
[Presentation] コンゴ民主共和国における武装勢力の分裂統合2018
- Author(s)
  大石晃史
- Organizer
  日本アフリカ学会第56回学術大会
- Data Source
  KAKENHI-PROJECT-18H03621
[Presentation] Overlapping communities in correlation matrices2018
- Author(s)
  Koji Oishi, Takamitsu Watanabe, Naoki Masuda
- Organizer
  NetSci 2018 Conference
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03621
[Presentation] 集団の分裂統合の系譜ネットワークによる表現2018
- Author(s)
  平岡喬之、大石晃史
- Organizer
  日本物理学会2018年秋季大会
- Data Source
  KAKENHI-PROJECT-18H03621
[Presentation] 紛争下の離合集散に構造はあるか：ネットワーク分析2018
- Author(s)
  大石晃史
- Organizer
  日本国際政治学会2018 年研究大会
- Data Source
  KAKENHI-PROJECT-18H03621

1. Sakamoto Takuto (40456182)

# of Collaborated Projects: 2 results

# of Collaborated Products: 2 results
2. キハラハント愛 (10806459)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
3. 村瀬洋介 (30709770)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
4. Hanai Kazuyo (10768013)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
5. 古城佳子 (30205398)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
6. 遠藤貢 (70251311)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. 武内進一 (60450459)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
8. 福西隆弘 (80450526)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
9. 瀧川裕貴 (60456340)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. 米川正子 (80626474)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
11. MASWANA J.C. (30378525)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
12. 林裕 (40779980)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
13. 森川想 (10736226)

# of Collaborated Projects: 1 results

# of Collaborated Products: 3 results
14. 和田毅 (20534382)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
15. 牧田裕美 (00882862)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
16. 久保田徳仁 (00545858)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
17. SHIMADA Takashi

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

Oishi Koji 大石 晃史

Research Projects

Research Products

Co-Researchers

Network science of conflict spreadingPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Global Governance in the Age of Cyber-Physical Fusion: Toward Sustainable Peace

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

公共サービスをめぐる紛争の解決モデル：ラテンアメリカを事例としてPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Relations Between Minerals Extraction and Human Rights Violation in Conflict

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Governance for Sustainable Peace and Development: Interdisciplinary Study Based on Network Science and Data Science

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

[Journal Article] Evolution of global development cooperation: An analysis of aid flows with hierarchical stochastic blockmodels2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] State of the Civil War in the Phantom State: Integration and Fragmentation among Armed Groups in the Central African Republic Since 20052022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Balanced-imbalanced transitions in indirect reciprocity dynamics on networks2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Structural balance of alliance and rivalry networks in international relations2020

Author(s)

Journal Title

Data Source

[Journal Article] 政治体間関係から生じる国際体系：複合政治体動態モデルによる一般的類型2018

Author(s)

Journal Title

Data Source

[Presentation] Structural balance of alliance and rivalry networks in international relations2024

Author(s)

Organizer

Data Source

[Presentation] Interference of Decentralization with PPP in the Water Sector and Shifting Equilibria in Service Quality and Tariffs: A Case Study of Mexico City2023

Author(s)

Organizer

Data Source

[Presentation] Governance of Regulators Regarding Water Services: The Impact of Political Interference on Regulation under Private Concession in Latin America2022

Author(s)

Organizer

Data Source

[Presentation] Structural balance in international alliance and rivalry networks: Does the enemy of my enemy become my friend?2021

Author(s)

Organizer

Data Source

[Presentation] Structural balance in international alliance and rivalry networks: Does the enemy of my enemy become my friend?2021

Author(s)

Organizer

Data Source

[Presentation] The Evolution of Global Development Cooperation: An Analysis with Stochastic Block Models2021

Author(s)

Organizer

Oishi Koji 大石晃史