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KAMIHIGASHI Takashi
Center for Computational Social Science (CCSS)
Professor

Researcher basic information

■ Degree
  • Ph.D.
■ Research Keyword
  • Macroeconomics
■ Research Areas
  • Humanities & social sciences / Theoretical economics
■ Committee History
  • Jan. 2022 - Present, Society for Computational Social Science of Japan, Vice P
  • Jul. 2021 - Present, International Economic Association (IEA), 理事
  • Jan. 2019 - Present, IEFS Japan, President
  • May 2024 - May 2026, Japanese Economic Association, Vice President
  • Apr. 2022 - Mar. 2026, Japan Science and Technology Agency, Resaerch Area Advisor, ACT-X [AI powered Research Innovation / Creation]AI powered Research Innovation / Creation
  • Oct. 2020 - Sep. 2025, Science, Council Member
  • Jun. 2018 - May 2022, Japan Economic Association, 代議員
  • Jun. 2020 - Apr. 2022, Japan Science and Technology Agency, Research Area Advisors
  • Mar. 2021 - Jan. 2022, Society for Computational Social Science of Japan, 理事
  • Oct. 2014 - Sep. 2020, Science Council of Japan, Associate Members

Research activity information

■ Award
  • Oct. 2021 Kobe University, 令和3年度神戸大学学長表彰
    KAMIHIGASHI Takashi
    Others
    IRI

  • Oct. 2021 Kobe University, 令和3年度神戸大学学長表彰 財務貢献者
    KAMIHIGASHI Takashi
    Others
    IRI

  • Oct. 2020 Kobe University, 令和2年度神戸大学学長表彰 財務貢献者
    KAMIHIGASHI Takashi

  • Oct. 2019 神戸大学, 令和元年度神戸大学学長表彰 財務貢献者
    KAMIHIGASHI Takashi
    Others

  • Oct. 2018 神戸大学, 平成30年度神戸大学学長表彰 財務貢献者
    KAMIHIGASHI Takashi
    Others

  • Oct. 2017 神戸大学, 平成29年度神戸大学学長表彰 財務貢献者, -
    KAMIHIGASHI Takashi
    Others

  • May 2015 International Economics and Finance Society Japan, IEFS Japan Koji Shimomura Award 2015, －
    KAMIHIGASHI Takashi
    Japan society

  • Mar. 2011 （財）村尾育英会, 第28回村尾育英会学術賞, 資産バブルと景気変動に関する経済理論
    KAMIHIGASHI Takashi

  • Sep. 2010 日本経済学会, 中原賞
    KAMIHIGASHI Takashi

■ Paper
  • Ken-Ichi Akao, Takashi Kamihigashi, Kazuo Nishimura
    Elsevier, Aug. 2025, Journal of Mathematical Economics, 119, 103146, English, International magazine
    [Refereed]
    Scientific journal

  • Extracting Official Agencies' Communication Patterns During the COVID-19 Pandemic: A Text Mining Approach
    Shady Salama, Akira Matsui, Takashi Kamihigashi
    Springer, Aug. 2024, Lecture Notes in Networks and Systems (Proceedings of the Third International Conference on Innovations in Computing Research (ICR’24) ), 1058, 3 - 12, English
    [Refereed]
    International conference proceedings

  • Salama Shady, Vera Paola Shoda, Takashi Kamihigashi
    MDPI, Jun. 2024, Informatics, 11(2) (2), 17, English, International magazine
    [Refereed]
    Scientific journal

  • Kashif Ahmed, Takashi Kamihigashi, Miwa Matsuo
    Wiley, Oct. 2023, Transport Policy, 142, 99 - 114, English, International magazine
    [Refereed]
    Scientific journal

  • Japan's Monetary Policy: A Literature Review and Empirical Assessment
    Masahiko SHIBAMOTO, Wataru TAKAHASHI, Takashi KAMIHIGASHI
    Springer, Oct. 2023, Journal of Computational Social Science, 6(2) (2), 1215 - 1254, English, International magazine
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • OD Analysis of Hanshin Expressway ETC Statistics
    Daigo Umemoto, Takashi Kamihigashi
    International Society of Artificial Life and Robotics, Jan. 2022, AROB-ISBC-SWARM 2022, English
    [Refereed]
    International conference proceedings

  • 投機かリスクヘッジか―堂島米市場再考―
    高槻 泰郎, 上東 貴志
    大阪経済大学日本経済史研究所, Jan. 2022, 経済史研究, 25, 31 - 57, Japanese
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Existence of an optimal path in a continuous-time nonconcave Ramsey model
    Ken-Ichi Akao, Hitoshi Ishii, Takashi Kamihigashi, Kazuo Nishimura
    Yokohama Publishers, 2022, Pure and Applied Functional Analysis, 7(6) (6), 1939 - 1952, English
    [Refereed]
    Scientific journal

  • 阪神高速ETC統計データの時間的規則性
    楳本大悟, 上東貴志
    交通流数理研究会, Dec. 2021, 第27回交通流と自己駆動粒子系シンポジウム 論文集, 35 - 38, Japanese
    [Refereed]
    Scientific journal

  • Takashi Kamihigashi, Kerim Keskin, Cagri Saglam
    Springer, Oct. 2021, Theory and Decision, 91(3) (3), 289 - 312, English, International magazine
    [Refereed]
    Scientific journal

  • Takashi Kamihigashi
    Springer, Nov. 2020, Journal of Inequalities and Applications, Article Number 243, English, International magazine
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Partial Stochastic Dominance via Optimal Transport
    Takashi Kamihigashi, John Stachurski
    Lead, Elsevier, Sep. 2020, Operations Research Letters, 49(5) (5), 584 - 586, English, International magazine, Co-authored internationally
    [Refereed]
    Scientific journal

  • Ronaldo Carpio, Takashi Kamihigashi
    Taylor & Francis, Jan. 2020, Journal of Difference Equations and Applications, 26(2) (2), 209 - 222, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • KAMIHIGASHI Takashi, STACHURSKI John
    2019, Journal of Applied Probability, English
    [Refereed]
    Scientific journal

  • 丁稚か「Salary man」か―神戸高等商業学校卒業生のキャリア選択―
    ISHIDO Shino, KAMIHIGASHI Takashi, TAKATSUKI Yasuo
    有斐閣, Jul. 2018, 企業家研究, 15, Japanese
    [Refereed]
    Scientific journal

  • Carmen Camacho, Takashi Kamihigashi, Çağrı Sağlam
    Academic Press Inc., Mar. 2018, Journal of Economic Theory, 174, 288 - 299, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • KUMAMOTO Shin-Ichiro, KAMIHIGASHI Takashi
    Mar. 2018, frontiers in Physics, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Takashi Kamihigashi
    Elsevier B.V., Jan. 2018, Mathematical Social Sciences, 91, 36 - 41, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • CHEN Jinhui, KAMIHIGASHI Takashi, ITOH Munehiko, TAKATSUKI Yasuo, TAKIGUCHI Tetsuya
    Springer, Jan. 2018, Journal of Computational Social Science, 1(1) (1), 167 - 185, English
    [Refereed]
    Scientific journal

  • Lise Clain-Chamosset-Yvrard, Takashi Kamihigashi
    Jan. 2017, JOURNAL OF MATHEMATICAL ECONOMICS, 68, 115 - 126, English
    [Refereed]
    Scientific journal

  • Takashi Kamihigashi
    Jan. 2017, JOURNAL OF INEQUALITIES AND APPLICATIONS, 2017(24) (24), 1 - 15, English
    [Refereed]
    Scientific journal

  • Takashi Kamihigashi
    Jan. 2017, ANNALS OF OPERATIONS RESEARCH, 248(1-2) (1-2), 579 - 588, English
    [Refereed]
    Scientific journal

  • Regime-Switching Sunspot Equilibria in a One-Sector Growth Model with Aggregate Decreasing Returns and Small Externalities
    KAMIHIGASHI Takashi
    Springer, Dec. 2016, Sunspots and Non-linear Dynamics: Essays in Honor of Jean-Michel Grandmont (Studies in Economic Theory), edited by K. Nishimura, A. Venditti, and N. Yannelis, English
    [Refereed]
    Scientific journal

  • Stability Analysis for Random Dynamical Systems in Economics
    KAMIHIGASHI Takashi, STACHURSKI John
    Springer, Aug. 2016, Rabi N. Bhattacharya: Selected Papers, 363 - 374, English
    [Refereed]
    Scientific journal

  • SIFT Boosting for Handwriting Recognition
    CHEN Jinhui, KAMIHIGASHI Takashi, ITOH Munehiko, TAKATSUKI Yasuo, TAKIGUCHI Tetsuya, ARIKI Yasuo
    Aug. 2016, MIRU 2016, PS2-48, English
    International conference proceedings

  • Infinite-Horizon Deterministic Dynamic Programming in Discrete Time: A Monotone Convergence Principle and a Penalty Method
    KAMIHIGASHI Takashi, MASAYUKI Yao
    Elsevier, Jun. 2016, Optimization, 1–10, English
    [Refereed]
    Scientific journal

  • Seeking Ergodicity in Dynamic Economies
    KAMIHIGASHI Takashi, STACHURSKI John
    Elsevier, May 2016, Journal of Economic Theory, 163, 900–924, English
    [Refereed]
    Scientific journal

  • An Application of Kleene's Fixed Point Theorem to Dynamic Programming
    KAMIHIGASHI Takashi, REFFETT Kevin, YAO Masayuki
    Wiley-Blackwell, Dec. 2015, International Journal of Economic Theory, 11(4) (4), 429 - 439, English
    [Refereed]
    Scientific journal

  • Multiple Interior Steady States in the Ramsey Model with Elastic Labor Supply
    KAMIHIGASHI Takashi
    Wiley-Blackwell, Mar. 2015, International Journal of Economic Theory, 11(1) (1), 25 - 37, English
    [Refereed]
    Scientific journal

  • Takashi Kamihigashi, John Stachurski
    Jan. 2015, JOURNAL OF MATHEMATICAL ECONOMICS, 56, 9 - 14, English
    [Refereed]
    Scientific journal

  • Takashi Kamihigashi
    Jun. 2014, ECONOMIC THEORY, 56(2) (2), 251 - 273, English
    [Refereed]
    Scientific journal

  • Takashi Kamihigashi, John Stachurski
    May 2014, THEORETICAL ECONOMICS, 9(2) (2), 383 - 407, English
    [Refereed]
    Scientific journal

  • An Order-Theoretic Approach to Dynamic Programming: an Exposition
    KAMIHIGASHI Takashi
    Springer, Apr. 2014, Economic Theory Bulletin, 2(1) (1), 13 - 21, English
    [Refereed]
    Scientific journal

  • Yiyong Cai, Takashi Kamihigashi, John Stachurski
    Jan. 2014, JOURNAL OF MATHEMATICAL ECONOMICS, 50, 167 - 176, English
    [Refereed]
    Scientific journal

  • Simple Fixed Point Results for Order-Preserving Self-Maps and Applications to Nonlinear Markov Operators
    KAMIHIGASHI Takashi, STACHURSKI John
    Springer, Dec. 2013, Fixed Point Theory and Applications, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Takashi Kamihigashi
    Mar. 2013, INTERNATIONAL JOURNAL OF ECONOMIC THEORY, 9(1) (1), 45 - 56, English
    [Refereed]
    Scientific journal

  • Threats or Promises? A Built-in Mechanism of Gradual Reciprocal Trade Liberalization
    FURUSAWA Taiji, KAMIHIGASHI Takashi
    Jun. 2012, Japanese Economic Review, Volume 63, Issue 3, pages 259-, English
    [Refereed]
    Scientific journal

  • Discrete Choice and Complex Dynamics in Deterministic Optimization Problems
    KAMIHIGASHI Takashi
    Apr. 2012, Macroeconomic Dynamics, Volume 16, S1, pp.52-69, English
    [Refereed]
    Scientific journal

  • An Order-Theoretic Mixing Condition for Monotone Markov Chains
    KAMIHIGASHI Takashi, STACHURSKI John
    Feb. 2012, Statistics and Probability Letters, Volume 82, Issue 2, pp.262-267, English
    [Refereed]
    Scientific journal

  • Monotonicity and Continuity of the Critical Capital Stock in the Dechert-Nishimura Model
    AKAO Ken-Ichi, KAMIHIGASHI Takashi, NISHIMURA Kazuo
    Dec. 2011, Journal of Mathematical Economics, Volume 47, Issue 6, pp.677-682, English
    [Refereed]
    Scientific journal

  • Recurrent Bubbles
    KAMIHIGASHI Takashi
    Mar. 2011, Japanese Economic Review, Volume 62, Issue 1, pages 27–6, English
    [Refereed]
    Scientific journal

  • Global Dynamics in Repeated Games with Additively Separable Payoffs
    KAMIHIGASHI Takashi, FURUSAWA Taiji
    Oct. 2010, Review of Economic Dynamics, Volume 13, Issue 4, Pages 899-, English
    [Refereed]
    Scientific journal

  • Status Seeking and Bubbles
    KAMIHIGASHI Takashi
    Dec. 2008, Takashi Kamihigashi and Laixun Zhao eds. International Trade and Economic Dynamics: Essays in Memory of Koji Shimomura, pp.383-392, English
    [Refereed]
    Scientific journal

  • On the Principle of Optimality for Nonstationary Deterministic Dynamic Programming
    KAMIHIGASHI Takashi
    Dec. 2008, International Journal of Economic Theory, Vol.4,Issue 4, 519-525, English
    [Refereed]
    Scientific journal

  • Transversality Conditions and Dynamic Economic Behaviour
    KAMIHIGASHI Takashi
    May 2008, Steven N. Durlauf and Lawrence E. Blume eds. The New Palgrave Dictionary of Economics, Second Edition, Volume 8, pp.384-387, English
    [Refereed]
    Scientific journal

  • The Spirit of Capitalism, Stock Market Bubbles, and Output Fluctuations
    KAMIHIGASHI Takashi
    Mar. 2008, International Journal of Economic Theory, (Vol. 4 Special Issue on Nonli, English
    [Refereed]
    Scientific journal

  • Stochastic Optimal Growth with Bounded or Unbounded Utility and with Bounded or Unbounded Shocks
    KAMIHIGASHI Takashi
    Apr. 2007, Journal of Mathematical Economics, Volume 43, Issues 3-4, pp. 477, English
    [Refereed]
    Scientific journal

  • A Nonsmooth, Nonconvex Model of Optimal Growth
    KAMIHIGASHI Takashi, ROY Santanu
    Jan. 2007, Journal of Economic Theory, 132 (1), 435-460, English
    [Refereed]
    Scientific journal

  • Dynamic Optimization with a Nonsmooth, Nonconvex Technology: The Case of a Linear Objective Function
    KAMIHIGASHI Takashi, ROY Santanu
    Oct. 2006, Economic Theory, 29 (2), 325-340, English
    [Refereed]
    Scientific journal

  • Almost Sure Convergence to Zero in Stochastic Growth Models
    KAMIHIGASHI Takashi
    Sep. 2006, Economic Theory, 29 (1), 231-237, English
    [Refereed]
    Scientific journal

  • Necessity of the Transversality Condition for Stochastic Models with Bounded or CRRA Utility
    KAMIHIGASHI Takashi
    Aug. 2005, Journal of Economic Dynamics and Control, 29 (8), 1313-1329, English
    [Refereed]
    Scientific journal

  • Necessity of Transversality Conditions for Stochastic Problems
    KAMIHIGASHI Takashi
    2003, Journal of Economic Theory, 109,pp.140-149, English
    [Refereed]
    Scientific journal

  • T Kamihigashi
    Sep. 2002, ECONOMIC THEORY, 20(2) (2), 427 - 433, English
    [Refereed]
    Scientific journal

  • KAMIHIGASHI Takashi
    Elsevier, Jan. 2002, Journal of Economic Dynamics and Control, 26(11) (11), 141 - 169, English
    [Refereed]
    Scientific journal

  • T Kamihigashi
    Jul. 2001, ECONOMETRICA, 69(4) (4), 995 - 1012, English
    [Refereed]
    Scientific journal

  • 離散選択問題の政策関数は乱数発生装置である
    KAMIHIGASHI Takashi
    東洋経済新報社, Oct. 2000, 岡田章・神谷和也・黒田昌裕・伴金美編『現代経済学の潮流2000』, 177 - 200, English
    [Refereed]
    Scientific journal

  • KAMIHIGASHI Takashi
    Springer, Apr. 2000, Economic Theory, 15(3) (3), 585 - 598, English
    [Refereed]
    Scientific journal

  • The policy function of a discrete-choice problem is a random number generator
    T Kamihigashi
    Mar. 2000, JAPANESE ECONOMIC REVIEW, 51(1) (1), 51 - 71, English
    [Refereed]
    Scientific journal

  • T Kamihigashi
    Mar. 2000, ECONOMIC THEORY, 15(2) (2), 463 - 468, English
    [Refereed]
    Scientific journal

  • Increasing marginal impatience and intertemporal substitution
    T Kamihigashi
    2000, JOURNAL OF ECONOMICS-ZEITSCHRIFT FUR NATIONALOKONOMIE, 72(1) (1), 67 - 79, English
    [Refereed]
    Scientific journal

  • Chaotic dynamics in quasi-static systems: theory and applications
    T Kamihigashi
    Mar. 1999, JOURNAL OF MATHEMATICAL ECONOMICS, 31(2) (2), 183 - 214, English
    [Refereed]
    Scientific journal

  • KAMIHIGASHI Takashi
    Springer, Jun. 1998, Economic Theory, 12(1) (1), 103 - 122, English
    [Refereed]
    Scientific journal

  • T Kamihigashi
    Feb. 1996, JOURNAL OF MONETARY ECONOMICS, 37(1) (1), 105 - 117, English
    [Refereed]
    Scientific journal

■ MISC
  • ダイナミック・プログラミングとマルコフ連鎖
    KAMIHIGASHI Takashi
    神戸大学経済経営学会, Mar. 2025, 経済学の歩き方（2025年度版）, 41 - 46, Japanese
    Introduction research institution

  • 計算社会科学の発展と可能性：国内外の展開と少子化対策への応用
    Takashi Kamihigashi
    KOZO KEIKAKU ENGINEERING HOLDINGS, Aug. 2024, 「知のENGINE」シリーズ 第1回シンポジウムレポート, 9 - 11, Japanese
    Meeting report

  • ダイナミック・プログラミングとマルコフ連鎖
    KAMIHIGASHI Takashi
    神戸大学経済経営学会, Mar. 2023, 経済学の歩き方（2023年度版）, 55 - 60, Japanese
    Introduction research institution

  • Measuring Social Change Using Text Data: A Simple Distributional Approach
    KAMIHIGASHI Takashi, SEKI Kazuhiro, SHIBAMOTO Masahiko
    Springer, Nov. 2017, Reconstruction of the Public Sphere in the Socially Mediated Age, 139 - 163, English
    Report scientific journal

  • マクロ経済学における動的最適化
    KAMIHIGASHI Takashi
    Sep. 2011, 経済セミナー, 67-73頁, Japanese
    Others

  • A Deterministic Economy Generates a Stochastic Process : An Extended Abstract : Analytical Foundations of Economic Theory (Mathematical Economics)
    Kamihigashi Takashi
    Kyoto University, Jun. 2001, RIMS Kokyuroku, 1215, 30 - 32, English

■ Books And Other Publications
  • 計算社会科学の今後の展望と課題
    上東 貴志
    Contributor, 12章4節 427-433, 丸善出版, Jan. 2021, Japanese

  • 計算社会科学と経済学におけるAI
    上東貴志
    Contributor, 12章4節 427-433, エヌ・ティー・エス, Jun. 2019, Japanese

  • Reconstruction of the Public Sphere in the Socially Mediated Age
    ENDO Kaoru, KURIHARA Satoshi, KAMIHIGASHI Takashi, TORIUMI Fujio
    Joint editor, Springer, Oct. 2017, English
    Scholarly book

  • International Trade and Economic Dynamics: Essays in Memory of Koji Shimomura
    KAMIHIGASHI Takashi, ZHAO Laixun
    Springer, Dec. 2008, English
    Scholarly book

  • 横断性条件の必要性と十分性
    KAMIHIGASHI Takashi
    Contributor, 第4章 89-118頁, Sep. 2004, Japanese

■ Lectures, oral presentations, etc.
  • （モデレーター）パネルディスカッション
    Takashi Kamihigashi
    神戸大学公開シンポジウム 「研究ってナニ？～私たちのリアルな挑戦～高校生と大学研究者の場合」, Aug. 2028, Japanese, Center for Computational Social Science, Kobe University, Kobe University, Japan
    Others

  • （ファシリテーター）第一部：次世代災害リスク情報とコミュニケーション パネルディスカッション
    Takashi Kamihigashi
    阪神･淡路大震災30周年記念シンポジウム「次世代の災害リスク管理と被災者の生活保障 ―神戸の教訓と、これから」, Jan. 2025, Japanese, 神戸大学社会システムイノベーションセンター／神戸大学未来世紀都市学研究アライアンス, Kobe University / Online, Japan
    Others

  • AI時代の少子化対策：地域間移動と世代間衡平を踏まえて
    Takashi Kamihigashi
    日本学術会議第一部会 シンポジウム「超少子高齢社会と人文社会科学の役割」, Aug. 2024, Japanese, Science Council of Japan, Tohoku University (Online), Japan, Domestic conference
    [Invited]
    Invited oral presentation

  • 計算社会科学の発展と可能性：国内外の展開と少子化対策への応用
    Takashi Kamihigashi
    【社会課題の構造を多元的な視点で解きほぐす】～数理物理学・計算社会科学から考える共創シンポジウム～, Jul. 2024, Japanese, KOZO KEIKAKU ENGINEERING, The International House of Japan, Japan
    [Invited]
    Invited oral presentation

  • Interchanging a Limit and an Integral: With Applications to Continuity and Differentiability of an Infinite Sum
    Takashi Kamihigashi
    慶応義塾大学経済学部附属経済研究所ミクロ経済学ワークショップ, Apr. 2024, English, Institute for Economic Studies, Keio University, Keio University, Japan
    [Invited]
    Invited oral presentation

  • Introduction of the Journal of Computational Social Science
    Takashi Kamihigashi
    Workshop of "Computational Society: examine the present and plan for the future", Mar. 2024, English, Institute of Sociology, Academia Sinica, Institute of Sociology, Academia Sinica, Taiwan, Province of China, International conference
    [Invited]
    Invited oral presentation

  • （座長）中原賞受賞講演
    Takashi Kamihigashi
    日本経済学会2022年度秋季大会, Oct. 2022, Japanese, 日本経済学会, 慶應義塾大学（オンライン開催）, Japan, Domestic conference
    Others

  • （パネルディスカッション司会）インターナショナル・セッション
    Takashi Kamihigashi
    防災減災の国際連続ワークショップ「MIRAI BOSAI 2022」, Mar. 2022, Japanese, 神戸大学高等研究院未来世紀都市学研究アライアンス, 神戸大学（オンライン開催）, Japan, Domestic conference
    [Invited]
    Nominated symposium

  • （基調講演）MIRAIBOSAI趣旨説明
    Takashi Kamihigashi
    防災減災の国際連続ワークショップ「MIRAI BOSAI 2022」, Mar. 2022, Japanese, 神戸大学高等研究院未来世紀都市学研究アライアンス, 神戸大学（オンライン開催）, Japan, Domestic conference
    [Invited]
    Keynote oral presentation

  • ポストコロナ社会における政策決定
    上東 貴志
    第12回横幹連合コンファレンス, Dec. 2021, Japanese, 特定非営利活動法人 横断型基幹科学技術研究団体連合, 筑波大学（オンライン開催）, Japan
    Oral presentation

  • 社会リスク可視化システム、及び社会リスクに適切に対応する意思決定システムの開発
    上東 貴志
    第12回横幹連合コンファレンス, Dec. 2021, Japanese, 特定非営利活動法人 横断型基幹科学技術研究団体連合, 筑波大学（オンライン開催）, Japan
    Oral presentation

  • （パネリスト）神戸大学経済経営研究所ウェビナー 藩札から銀行へ～渋沢栄一と明治の金融革命～
    Takashi Kamihigashi
    神戸大学経済経営研究所ウェビナー 藩札から銀行へ～渋沢栄一と明治の金融革命～, Dec. 2021, Japanese, 神戸大学経済経営研究所, 神戸大学経済経営研究所（オンライン開催）, Japan
    Public discourse

  • （モデレーター）神戸大学経済経営研究所ウェビナー 藩札から銀行へ～渋沢栄一と明治の金融革命～
    Takashi Kamihigashi
    神戸大学経済経営研究所ウェビナー 藩札から銀行へ～渋沢栄一と明治の金融革命～, Dec. 2021, Japanese, 神戸大学経済経営研究所, 神戸大学経済経営研究所（オンライン開催）, Japan
    Public discourse

  • (Organizer) International Competition and Growth
    KAMIHIGASHI Takashi
    The 20th Annual SAET Conference, Jun. 2021, English, Society for the Advancement of Economic Theory, Seoul National University (Online), International conference
    Others

  • (Organizer/Chair) Innovation
    KAMIHIGASHI Takashi
    The 20th Annual SAET Conference, Jun. 2021, English, Society for the Advancement of Economic Theory, Seoul National University (Online), International conference
    Others

  • (Organizer) Economic Growth
    KAMIHIGASHI Takashi
    The 20th Annual SAET Conference, Jun. 2021, English, Society for the Advancement of Economic Theory, Seoul National University (Online), International conference
    Others

  • Creating Value for the Future of AI and Society
    KAMIHIGASHI Takashi
    International Conference on Creating Value for the Future of AI and Society, Oct. 2019, English
    [Invited]

  • Value and Evaluation in Economics and AI
    KAMIHIGASHI Takashi
    International Conference on Creating Value for the Future of AI and Society, Oct. 2019, English
    [Invited]

  • A Dynamic General Equilibrium IS-LM Model
    KAMIHIGASHI Takashi
    Sapporo Summer Workshop on Monetary and Financial Economics 2018, Aug. 2018, English, 北海道大学, 北海道大学, International conference
    Oral presentation

  • 近似ベイズ計算に基づく大規模シミュレーションモデルの推定と評価
    KAMIHIGASHI Takashi
    第80回全国大会－みんなの情報処理教育－, Mar. 2018, Japanese, 一般社団法人 情報処理学会, 早稲田大学西早稲田キャンパス, Domestic conference
    Oral presentation

  • （司会）パネル・ディスカッション「計算社会科学の成果と課題」
    KAMIHIGASHI Takashi
    神戸大学経済経営研究所公開シンポジウム「計算社会科学からの挑戦～リスク社会におけるメディアの発達とソーシャル・キャピタル～」, Sep. 2017, Japanese, Domestic conference
    Others

  • テキスト分析による社会変動の計測
    KAMIHIGASHI Takashi
    神戸大学経済経営研究所公開シンポジウム「計算社会科学からの挑戦～リスク社会におけるメディアの発達とソーシャル・キャピタル～」, Sep. 2017, Japanese, Domestic conference
    Public discourse

  • テキストデータによる震災等の社会的影響の計測
    KAMIHIGASHI Takashi
    第25回地球環境シンポジウム, Sep. 2017, Japanese, Domestic conference
    Public discourse

  • （司会）対談「アベノミクス再考」
    KAMIHIGASHI Takashi
    神戸大学経済経営研究所公開シンポジウム「アベノミクス再考：グローバル日本の金融・財政政策」, Aug. 2017, Japanese, 神戸大学経済経営研究所, 神戸大学, Domestic conference
    Others

  • パネルディスカッション「HPCの社会シミュレーションへの展開」
    KAMIHIGASHI Takashi
    SS研HPCフォーラム2017「計算科学の新たな可能性」, Aug. 2017, Japanese, Domestic conference
    Others

  • パネル・ディスカッション「計算社会科学はアイドルの役に立つのか？」
    KAMIHIGASHI Takashi
    神戸大学経済経営研究所特別シンポジウム AKB48の計算社会科学 かよよん（田北香世子さん・AKB48チームA）を迎えて, Mar. 2017, Japanese, 神戸大学経済経営研究所, 神戸大学, Domestic conference
    Others

  • 計算社会科学の拠点形成に向けて
    KAMIHIGASHI Takashi
    第一回計算社会科学ワークショップ, Feb. 2017, Japanese, 計算社会科学ワークショップ, 学習院大学目白キャンパス, Domestic conference
    Invited oral presentation

  • A Simple Optimality-Based No-Bubble Theorem for Deterministic Sequential Economies with Strictly Monotone Preferences
    KAMIHIGASHI Takashi
    Asia-Pacific Conference on Economic Dynamics (APCED 2016), Dec. 2016, English, Asia-Pacific Researchers in Organisation Studies, International University, VNU-HCMC, International conference
    [Invited]
    Invited oral presentation

  • Robust Comparative Statics for Non-monotone Shocks in Large Aggregative Games
    KAMIHIGASHI Takashi
    RIEB Workshop on Monotone Comparative Statics, Sep. 2016, English, 神戸大学経済経営研究所, 神戸大学経済経営研究所, Domestic conference
    Oral presentation

  • SIFT Boosting for Handwriting Recognition
    CHEN Jinhui, KAMIHIGASHI Takashi, ITOH Munehiko, TAKATSUKI Yasuo, TAKIGUCHI Tetsuya, ARIKI Yasuo
    画像の認識・理解シンポジウム, Aug. 2016, English, Domestic conference
    Poster presentation

  • （討論）計算社会科学ワークショップ「Advances in Computational Social Science」
    KAMIHIGASHI Takashi
    計算社会科学ワークショップ「Advances in Computational Social Science」, Jul. 2016, English, 日本学術振興会 先導的人文学・社会科学研究推進事業「リスク社会におけるメディアの発達と公共性」研究グループ, 学習院大学目白キャンパス, Domestic conference
    Oral presentation

  • （パネル討論）公開シンポジウム「リスク社会における公共性の構造転換と社会関係資本－計算社会科学からの挑戦－（第2回）」
    KAMIHIGASHI Takashi
    公開シンポジウム「リスク社会における公共性の構造転換と社会関係資本－計算社会科学からの挑戦－（第2回）」, Jul. 2016, Japanese, 日本学術振興会 先導的人文学・社会科学研究推進事業「リスク社会におけるメディアの発達と公共性」研究グループ, 学習院大学目白キャンパス, Domestic conference
    Oral presentation

  • （Chair）Development/Environment Dynamics and Unemployment
    KAMIHIGASHI Takashi
    16th SAET Conference on Current Trends in Economics, Jun. 2016, English, Society for the Advancement of Economic Theory, リオデジャネイロ, International conference
    Others

  • Optimal cycles in the Dechert-Nishimura model with time to build
    KAMIHIGASHI Takashi
    16th SAET Conference on Current Trends in Economics, Jun. 2016, English, Society for the Advancement of Economic Theory, リオデジャネイロ, International conference
    Oral presentation

  • 利益相反の分類と社会組織の安定性
    KAMIHIGASHI Takashi
    公開シンポジウム リスク社会における公共性の構造転換と社会関係資本―計算社会科学からの挑戦―（先導的人文学・社会科学研究推進事業）, Feb. 2016, Japanese, 日本学術振興会 先導的人文学・社会科学研究推進事業 「リスク社会におけるメディアの発達と公共性」研究グループ, 東京大学本郷キャンパス, Domestic conference
    Nominated symposium

  • Computational Methods in Dynamic Macroeconomics
    KAMIHIGASHI Takashi
    Computational Social Science Japan Kickoff Workshop in Japan, Feb. 2016, English, Computational Social Science Japan, Hottlink Inc, Tokyo, Japan, International conference
    Invited oral presentation

  • Robust Comparative Statics of Non-Monotone Shocks in Large Aggregative Games
    KAMIHIGASHI Takashi, CAMACHO Carmen, SAGLAM Cagri
    «TIME, UNCERTAINTIES & STRATEGIES», a Novo Tempus and Labex MME-DII Conference, Dec. 2015, English, a Novo Tempus, Labex MME-DII Conference, Maison des Sciences Economiques, Paris, International conference
    Oral presentation

  • A Dynamic General Equilibrium IS-LM Model
    KAMIHIGASHI Takashi
    Singapore Economic Review Conference 2015, Aug. 2015, English, The Singapore Economic Review, Mandarin Orchard Singapore, International conference
    Invited oral presentation

  • (Chair) Macroeconomics VI
    KAMIHIGASHI Takashi
    Singapore Economic Review Conference 2015, Aug. 2015, English, The Singapore Economic Review, Mandarin Orchard Singapore, International conference
    Others

  • Seeking Ergodicity in Dynamic Economies
    KAMIHIGASHI Takashi, STACHURSKI John
    15th SAET Conference on Current Trends in Economics, Jul. 2015, English, Society for the Advancement of Economic Theory, University of Cambridge, UK, International conference
    Oral presentation

  • A Dynamic General Equilibrium IS-LM Model
    KAMIHIGASHI Takashi
    マクロ・金融ワークショップ, Jul. 2015, Japanese, 一橋大学経済研究所, Domestic conference
    Oral presentation

  • (Organizer) Dynamic Stochastic Models
    KAMIHIGASHI Takashi
    15th SAET Conference on Current Trends in Economics, Jul. 2015, English, Society for the Advancement of Economic Theory, University of Cambridge, UK, International conference
    Oral presentation

  • (Organizer) Dynamic Programming
    KAMIHIGASHI Takashi
    15th SAET Conference on Current Trends in Economics, Jul. 2015, English, Society for the Advancement of Economic Theory, University of Cambridge, UK, International conference
    Oral presentation

  • (Organizer) Dynamic Economies
    KAMIHIGASHI Takashi
    15th SAET Conference on Current Trends in Economics, Jul. 2015, English, Society for the Advancement of Economic Theory, University of Cambridge, UK, International conference
    Oral presentation

  • (Chair) Dynamic Stochastic Models
    KAMIHIGASHI Takashi
    15th SAET Conference on Current Trends in Economics, Jul. 2015, English, Society for the Advancement of Economic Theory, University of Cambridge, UK, International conference
    Oral presentation

  • (Chair) Dynamic Economies
    KAMIHIGASHI Takashi
    15th SAET Conference on Current Trends in Economics, Jul. 2015, English, Society for the Advancement of Economic Theory, University of Cambridge, UK, International conference
    Oral presentation

  • A Dynamic General Equilibrium IS-LM Model
    KAMIHIGASHI Takashi
    Microeconomics Workshop 2015, Jun. 2015, English, 東京大学, International conference
    Oral presentation

  • A Dynamic General Equilibrium IS-LM Model
    KAMIHIGASHI Takashi
    IEFS Japan Annual Meeting 2015, May 2015, English, International Economics and Finance Society Japan, 京都大学, International conference
    Oral presentation

  • A dynamic general equilibrium IS-LM model
    KAMIHIGASHI Takashi
    13th Viennese Workshop on Optimal Control and Dynamic Games, May 2015, English, European Mathematical Society, Vienna University of Technology, International conference
    Oral presentation

  • Extensions of Fatou's lemma and the dominated convergence theorem
    KAMIHIGASHI Takashi
    第6回 数理経済学会国際会議, Jan. 2015, English, 数理経済学会, 慶應義塾大学・三田キャンパス, International conference
    Oral presentation

  • (Organizer) Time Consistency
    KAMIHIGASHI Takashi
    14th SAET Conference on Current Trends in Economics, Aug. 2014, English, Society for the Advancement of Economic Theory, Waseda Univeristy, Tokyo, Japan, International conference
    Others

  • (Organizer) Dynamic Programming
    KAMIHIGASHI Takashi
    14th SAET Conference on Current Trends in Economics, Aug. 2014, English, Society for the Advancement of Economic Theory, Waseda Univeristy, Tokyo, Japan, International conference
    Others

  • (Chair) Dynamic Programming
    KAMIHIGASHI Takashi
    14th SAET Conference on Current Trends in Economics, Aug. 2014, English, Society for the Advancement of Economic Theory, Waseda Univeristy, Tokyo, Japan, International conference
    Others

  • Asset Bubbles in a Small Open Economy:A Simple Representative-Agent Model
    KAMIHIGASHI Takashi
    The Seventh Vietnam Economist Annual Meeting, Jun. 2014, English, the University of Economics Ho Chi Minh City (UEH), the Development and Policies Research Center (DEPOCEN), the French National Center for Scientific Research (CNRS), and the Foreign Trade University (FTU), University of Economics Ho Chi Minh City, Vietnam, International conference
    Keynote oral presentation

  • Asset Bubbles in a Small Open Economy: A Simple Representative-Agent Model
    KAMIHIGASHI Takashi
    Dynamic Interactions for Economic Theory Conference - 2013, Dec. 2013, English, Paris School of Economics, Maison des Sciences Economiques, Paris, International conference
    Oral presentation

  • An Order-Theoretic Approach to Dynamic Programming
    KAMIHIGASHI Takashi
    Asia-Pacific Conference on Economic Dynamics APCED 2013, Nov. 2013, English, University of Economics and Law,Ho Chi Minh City, International conference
    Keynote oral presentation

  • An Order-Theoretic Approach to Dynamic Programming
    KAMIHIGASHI Takashi
    Microeconomics Workshop 2013, Oct. 2013, English, 東京大学, 東京大学, International conference
    Oral presentation

  • Elementary results on solutions to the bellmanequation of dynamic programming: existence,uniqueness, and convergence
    KAMIHIGASHI Takashi
    Asian Meeting of the Econometric Society, Aug. 2013, English, Department of Economics, Faculty of Arts and Social Sciences, National University of Singapore, Singapore, Department of Economics, Faculty of Arts and Social Sciences, National University of Singapore, Singapore, International conference
    Oral presentation

  • (Organizer) Dynamic programming
    KAMIHIGASHI Takashi
    Asian Meeting of the Econometric Society, Aug. 2013, English, Department of Economics, Faculty of Arts and Social Sciences, National University of Singapore, Singapore, Department of Economics, Faculty of Arts and Social Sciences, National University of Singapore, Singapore, International conference
    Others

  • Exact Sampling from the Stationary Distribution of Entry-Exit Models
    KAMIHIGASHI Takashi, STACHURSKI John
    13th SAET Conference on Current Trends in Economics, Jul. 2013, English, MINES ParisTech, MINES ParisTech, France, International conference
    Oral presentation

  • Equilibrium Dynamics of Entry and Exit: Industry-wide Learning and Endogenous Heterogeneity
    ROY Santanu, KAMIHIGASHI Takashi
    13th SAET Conference on Current Trends in Economics, Jul. 2013, English, MINES ParisTech, MINES ParisTech, France, International conference
    Oral presentation

  • (Organizer) Topics in Economic Growth
    KAMIHIGASHI Takashi
    13th SAET Conference on Current Trends in Economics, Jul. 2013, English, MINES ParisTech, MINES ParisTech, France, International conference
    Others

  • (Organizer) International Financial Markets and Intertemporal Equilibrium
    KAMIHIGASHI Takashi
    13th SAET Conference on Current Trends in Economics, Jul. 2013, English, MINES ParisTech, MINES ParisTech, France, International conference
    Others

  • (Organizer) Industry Dynamics
    KAMIHIGASHI Takashi
    13th SAET Conference on Current Trends in Economics, Jul. 2013, English, MINES ParisTech, MINES ParisTech, France, International conference
    Others

  • (Organizer) Financial Friction and Overlapping Generations
    KAMIHIGASHI Takashi
    13th SAET Conference on Current Trends in Economics, Jul. 2013, English, MINES ParisTech, MINES ParisTech, France, International conference
    Others

  • (Chair) Industry Dynamics
    KAMIHIGASHI Takashi
    13th SAET Conference on Current Trends in Economics, Jul. 2013, English, MINES ParisTech, France, MINES ParisTech, France, International conference
    Others

  • (Chair) Financial Friction and Overlapping Generations
    KAMIHIGASHI Takashi
    13th SAET Conference on Current Trends in Economics, Jul. 2013, English, MINES ParisTech, MINES ParisTech, France, International conference
    Others

  • Ramsey, Kurz, Sidrauski and Keynes: A Dynamic General Equilibrium IS-LM Model
    KAMIHIGASHI Takashi
    Conference on Instability and Public Policies in a Globalized World, Jun. 2013, English, Aix-Marseille School of Economics (AMSI), GREQAM, Centre de la Vieille Charité, International conference
    Invited oral presentation

  • (Chair) Industry Dynamics
    KAMIHIGASHI Takashi
    Conference on Instability and Public Policies in a Globalized World, Jun. 2013, English, Aix-Marseille School of Economics (AMSI), GREQAM, Centre de la Vieille Charité, International conference
    Others

  • Asset Bubbles in a Small Open Economy
    KAMIHIGASHI Takashi
    International Conference on Marketing Quality, Trade and Dynamics, Apr. 2013, English, Kyoto University, Institute of Economic Research, The Westin Miyako Kyoto, International conference
    Invited oral presentation

  • （ディスカッサント）Bubbles, Financial Crisis, Macroeconomic Policies
    KAMIHIGASHI Takashi
    WEAI 10th Biennial Pacific Rim Conference, Mar. 2013, English, Keio University Graduate Schools of Economics and of Business and Commerce, 慶應義塾大学, International conference
    Oral presentation

  • A dynamic general equilibrium IS-LM model
    KAMIHIGASHI Takashi
    第6回バブル・金融危機研究会, Feb. 2013, English, 神戸大学経済経営研究所, 神戸大学経済経営研究所, International conference
    Oral presentation

  • 資産バブルに関する考察:理論と実証
    KAMIHIGASHI Takashi
    先端セミナー, Jun. 2012, Japanese, 財務総合政策研究所, 財務総合政策研究所, Domestic conference
    Invited oral presentation

  • Existence and uniqueness of a fixed point for the Bellman operator in deterministic dynamic programming'
    KAMIHIGASHI Takashi
    European Workshop on General Equilibrium Theory, Jun. 2012, English, University of Exeter Business School, University of Exeter Business School, International conference
    [Invited]
    Invited oral presentation

  • Asset Bubbles in a Small Open Economy
    KAMIHIGASHI Takashi
    12th Society for the Advancement of Economic Theory (SAET) Conference, Jun. 2012, English, University of Queensland, University of Queensland, Australia, International conference
    Oral presentation

  • Existence and Uniqueness of a Fixed Point for the Bellman Operator in Deterministic Dynamic Programming
    KAMIHIGASHI Takashi
    Workshop: economic theory, May 2012, English, パリ経済大学, Paris School of Economics, International conference
    Invited oral presentation

  • Existence, Stability and Computation of Stationary Distributions: An Extension of the Hopenhayn-Prescott Theorem
    KAMIHIGASHI Takashi
    Atelier "Methods of economics dynamics", May 2012, English, パリ第一大学, University of Paris 1 Panthéon-Sorbonne, International conference
    Invited oral presentation

  • ASSET BUBBLES IN A SMALL OPEN ECONOMY
    KAMIHIGASHI Takashi
    CARF コンファランス―金融市場とマクロ変動―, Mar. 2012, English, 東京大学金融教育研究センター, 箱根・芦ノ湖畔 山のホテル, Domestic conference
    Invited oral presentation

  • Asset Bubbles in a Small Open Economy
    KAMIHIGASHI Takashi
    RIEB Workshop on Economic Dynamics, Mar. 2012, English, 神戸大学経済経営研究所(RIEBセミナー), 神戸大学経済経営研究所, Domestic conference
    Oral presentation

  • Asset bubbles in a small open economy
    KAMIHIGASHI Takashi
    ・RIEB Workshop on Economic Dynamics, Jan. 2012, English, Centre for Economic Studies and Planning, School of Social Sciences, Jawaharlal Nehru University, Jawaharlal Nehru University, International conference
    Invited oral presentation

  • Asset Bubbles in a Small Open Economy
    KAMIHIGASHI Takashi
    東北大学現代経済学研究会, Nov. 2011, English, 東北大学現代経済学研究会, 東北大学, Domestic conference
    Invited oral presentation

  • (座長)金融I
    KAMIHIGASHI Takashi
    日本経済学会2011年度秋季大会, Oct. 2011, Japanese, 日本経済学会, 筑波大学, Domestic conference
    Others

  • (コメント)"A Prevention against Bubble"
    KAMIHIGASHI Takashi
    日本経済学会2011年度秋季大会, Oct. 2011, Japanese, 日本経済学会, 筑波大学, Domestic conference
    Others

  • Existence and Uniqueness of a Fixed Point for the Bellman Operator in Deterministic Dynamic Programming
    KAMIHIGASHI Takashi
    Workshop in Honour of Cuong Le Van, Sep. 2011, English, University of Exeter, University of Exeter, International conference
    Oral presentation

  • Asset bubbles in a small open economy
    KAMIHIGASHI Takashi
    Seminar, Sep. 2011, English, THEMA, Cergy-Pontoise University, Cergy-Pontoise University, France, International conference
    Oral presentation

  • (Chair)
    KAMIHIGASHI Takashi
    Workshop in Honour of Cuong Le Van, Sep. 2011, English, University of Exeter, University of Exeter, International conference
    Others

  • The Bellman Operator as a Monotone Map
    KAMIHIGASHI Takashi
    11th SAET Conference, Jun. 2011, English, Society for the Advancement of Economic Theory, Ria Park Hotels, International conference
    Oral presentation

  • Discrete Choice and Complex Dynamics in Deterministic Optimization Problems
    KAMIHIGASHI Takashi
    Les nouveaux enjeux de la r�gulation macro�conomique: crise financi�re, politique de stabilisation et d�veloppement durable, Jun. 2011, English, GREQAM, Centre de la Vieille Charit�, International conference
    Oral presentation

  • Recurrent Bubbles
    KAMIHIGASHI Takashi
    神戸大学経済経営研究所研究集会「経済の数理解析」, Nov. 2010, English, 神戸大学経済経営研究所, 数理経済学研究センター, 神戸大学, Domestic conference
    Oral presentation

  • （Comment）"A New Sufficient Condition for Ergodic Chaos with an Application to the Matsuyama–Solow Model of Cyclical Growth"
    KAMIHIGASHI Takashi
    日本経済学会2010年度秋季大会, Sep. 2010, Japanese, 日本経済学会, 関西学院大学, Domestic conference
    Others

  • Recurrent Bubbles
    KAMIHIGASHI Takashi
    日本経済学会2010年度秋季大会, Sep. 2010, Japanese, 日本経済学会, 関西学院大学, Domestic conference
    Invited oral presentation

  • Stochastic stability in monotone economies
    KAMIHIGASHI Takashi, STACHURSKI John
    10th SAET Conference, Aug. 2010, English, Society for the Advancement of Economic Theory, Grand Copthorne Waterfront Hotel, International conference
    Oral presentation

  • Asset bubbles in a small open economy
    KAMIHIGASHI Takashi
    The Seventh Asian General Equilibrium Theory Workshop (GETA2010), Aug. 2010, English, Institute of Mathematics, the Department of Mathematics of Hanoi National University of Education, Department of Economics of the Foreign Trade University, Development and Policies Research Center (DEPOCEN), Institute of Mathematics, VAST, Vietnam, International conference
    Invited oral presentation

  • (Organizer)Dynamic Programming and Applications
    KAMIHIGASHI Takashi
    10th SAET Conference, Aug. 2010, English, Society for the Advancement of Economic Theory, Grand Copthorne Waterfront Hotel, International conference
    Others

  • Rational Asset Price Bubbles in Small Open Economies
    KAMIHIGASHI Takashi
    Workshop on Mathematical Economics, 2009, Nov. 2009, English, 数理経済学研究センター, 慶應義塾大学, International conference
    Oral presentation

  • Rational Asset Price Bubbles in Small Open Economies
    KAMIHIGASHI Takashi
    Macroeconomics Workshop (Microeconomics Workshop 共催), Oct. 2009, English, 財団法人東京経済研究センター(TCER), 日本経済国際共同研究センター(TCER), 東京大学, International conference
    Oral presentation

  • Rational Asset Price Bubbles in Small Open Economies
    KAMIHIGASHI Takashi
    The 7th Joint Symposium between RIEB/Department of Economics, Kobe University and Hanyang Economic Research Institute/College of Economics and Finance, Hanyang University on "Changes and Challenges in the East Asian Financial Markets", Sep. 2009, English, Hanyang University, Hanyang University, International conference
    Oral presentation

  • Global Dynamics in Infinitely Repeated Games with Additively Separable Continuous Payoffs
    KAMIHIGASHI Takashi
    ICNAAM 2009, Sep. 2009, English, ICNAAM, Aquila Rithymna Beach Hotel, International conference
    Oral presentation

  • Dynamic Effects of Government Budgetary Policies in Reichlin’s Overlapping Generations Model with Externalities
    KAMIHIGASHI Takashi
    日本経済学会春季大会, Jun. 2009, Japanese, 日本経済学会, 京都大学, Domestic conference
    Others

  • Status Seeking and Bubbles
    KAMIHIGASHI Takashi
    5th International Conference on Economic Theory: Indeterminacy and Non-linear Dynamics in Intertemporal Equilibrium Models, Mar. 2008, Japanese, 京都大学、慶応義塾大学, 京都ロイヤルホテル, International conference
    Oral presentation

  • (Chair)Session1: Diversity of Economic Agents and the Optimality of Market Economy
    KAMIHIGASHI Takashi
    Kobe Global COE Workshop, Mar. 2008, English, 神戸大学, クラウンプラザホテル神戸, International conference
    Others

  • The Spirit of Capitalism, Stock Market Bubbles, and Output Fluctuations
    KAMIHIGASHI Takashi
    Workshop on Mathematical Economics, Oct. 2007, English, Research Center for Mathematical Economics, Keio University, 慶応義塾大学, International conference
    Invited oral presentation

  • The Spirit of Capitalism, Stock Market Bubbles, and Output Fluctuations
    KAMIHIGASHI Takashi
    Workshop on Economic Theory, Oct. 2007, English, 京都大学経済研究所, 京都大学, International conference
    Invited oral presentation

  • On the Principle of Optimality for Nonsationary Deterministic Dynamic Programming/Nonlinear Duality for Dynamic Optimization
    KAMIHIGASHI Takashi
    The Department of Economics Seminars Series, Apr. 2007, English, National University of Singapore, National University of Singapore, International conference
    Invited oral presentation

  • A Nonsmooth, Nonconvex Model of Optimal Growth
    KAMIHIGASHI Takashi
    International Conference on Instability and Fluctuations in Intertemporal Equilibrium Models, Jun. 2005, English, GREQAM, Marseille, International conference
    Invited oral presentation

  • Nonlinear Duality for Dynamic Optimization
    KAMIHIGASHI Takashi
    The 3rd International Conference on Mathematical Analysis in Economic Theory, Dec. 2004, English, 慶応大学, Tokyo, International conference
    Invited oral presentation

  • Nonlinear Duality for Dynamic Optimization
    KAMIHIGASHI Takashi
    2nd International Conference on Economic Theory, Dec. 2004, English, 京都大学, Kyoto, International conference
    Invited oral presentation

  • Nonlinear Duality for Dynamic Optimization
    KAMIHIGASHI Takashi
    Kobe COE Conference on Economic Theory, Nov. 2004, English, 神戸大学, Kobe, International conference
    Invited oral presentation

  • Almost Sure Convergence to Zero in Stochastic Growth Models
    KAMIHIGASHI Takashi
    AESS International Conference on Economic Theory, Jun. 2004, English, 神戸大学, Kobe, International conference
    Invited oral presentation

■ Research Themes
  • Dynamic game analysis for international environmental agreements
    赤尾 健一, 上東 貴志, 西村 和雄, 和佐 泰明, 石井 仁司, 内田 健康, 阪本 浩章, 鈴木 詩衣菜
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Waseda University, 01 Apr. 2021 - 31 Mar. 2025
    研究計画に従い、文献を通じて国際環境問題に関する諸条約における交渉過程について調査した。モデル分析とあわせて、以下の３つの発見、進展があった。（１）ヨーロッパの長距離越境待機汚染条約とオゾン層保護に関するウィーン条約に共通する興味深い事象は、いったん汚染規制が合意されると、繰り返しその見直しが行われ、より厳しい規制が合意されることである。気候変動枠組み条約のパリ協定における各国の自発的削減計画（NDCs）についても、2021年のグラスゴーでの締約国会議において、多くの国が当初の削減計画（INDCs）を見直すか見直すことを表明している。多均衡からより望ましい均衡が選びなおされているようにも見える。（２）協調ゲームの payoff dominant 均衡に関するAumann (1990)の主張 (communication は新たな情報をプレイヤーに与えないので、それによって payoff dominant 均衡が選ばれることをプレイヤーは確信できない)が、国際環境交渉においても妥当かを検討した。条約法に関するウィーン条約が発効した条約の拘束力を定める一方で、条約や議定書からの離脱手続きが条文に定められているもの（例えばパリ協定28条）や、決議に従わなないこと（留保）を認めるもの（例えば、ワシントン条約第15条）がある。そして実際に離脱や留保が行われている。（３）非対称ゲームとして非協力動学ゲームを分析することを本研究は課題としている。課題として、非常に多く存在する均衡解をどのように分類し特徴づけるかがある。国際環境問題の交渉について知見を深める中で、envy-free 均衡の着想を得た。

  • Co-evolution of epidemics, interventions, and behavior in network epidemiology
    Holme Petter, 高安 美佐子, 井深 陽子, 上東 貴志, 増田 直紀, 浅井 雄介, Beauchemin Catherine, 村田 剛志
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), Kobe University, Apr. 2021 - Mar. 2025, Coinvestigator
    FY2021 saw many advancements toward the objectives of the program. The PI published works about the co-evolution of sentiments, behavior, and disease spreading using social media data and a seminal study of Chinese mobility in the first year of Covid-19. Another work by the PI concerned how to represent contact data more efficiently for network epidemiology. Co-I Masuda contributed to several theoretical studies of disease spreading and how to analyze epidemic data. Co-I Ibuka had several publications about Covid-19 in Japan, and its social implications, including a seminal article about movement patterns during the Olympic games. The latter paper was co-authored by co-I Asai, who also co-authored a great number of reports about Covid-19 in Japan. Co-I Beauchemin published work on in-host viral dynamics. Co-I Takayasu published theoretical works on spreading dynamics and data science papers about opinion dynamics.

  • Dynamic game analysis of international environmental agreements
    赤尾 健一, 上東 貴志, 西村 和雄, 和佐 泰明, 石井 仁司, 内田 健康, 阪本 浩章, 鈴木 詩衣菜
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Waseda University, Apr. 2021 - Mar. 2025, Coinvestigator
    研究計画に従い、文献を通じて国際環境問題に関する諸条約における交渉過程について調査した。モデル分析とあわせて、以下の３つの発見、進展があった。（１）ヨーロッパの長距離越境待機汚染条約とオゾン層保護に関するウィーン条約に共通する興味深い事象は、いったん汚染規制が合意されると、繰り返しその見直しが行われ、より厳しい規制が合意されることである。気候変動枠組み条約のパリ協定における各国の自発的削減計画（NDCs）についても、2021年のグラスゴーでの締約国会議において、多くの国が当初の削減計画（INDCs）を見直すか見直すことを表明している。多均衡からより望ましい均衡が選びなおされているようにも見える。（２）協調ゲームの payoff dominant 均衡に関するAumann (1990)の主張 (communication は新たな情報をプレイヤーに与えないので、それによって payoff dominant 均衡が選ばれることをプレイヤーは確信できない)が、国際環境交渉においても妥当かを検討した。条約法に関するウィーン条約が発効した条約の拘束力を定める一方で、条約や議定書からの離脱手続きが条文に定められているもの（例えばパリ協定28条）や、決議に従わなないこと（留保）を認めるもの（例えば、ワシントン条約第15条）がある。そして実際に離脱や留保が行われている。（３）非対称ゲームとして非協力動学ゲームを分析することを本研究は課題としている。課題として、非常に多く存在する均衡解をどのように分類し特徴づけるかがある。国際環境問題の交渉について知見を深める中で、envy-free 均衡の着想を得た。

  • Risk Management of Comprehensive Monetary/Fiscal Policy: From Financial Crises to International Relations and Natural Disasters
    上東 貴志, C Y.Horioka, 高橋 亘, 貝原 俊也, 北野 重人, 敦賀 貴之, 堀井 亮, 関 和広, 多湖 淳, 小林 照義, 柴本 昌彦, 西村 和雄
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (S), Kobe University, Aug. 2020 - Mar. 2025, Principal investigator
    本研究の目的は、リスクに適切に反応する包括的な金融・財政政策を導出する手法を確立することである。具体的な目的は、以下の二つである。（1）財政問題は、財政を支える労働人口の減少の影響が大きく、少子高齢化、外国人労働者、移民問題と表裏一体の関係にある。本研究では、人口構成が時間とともに変化する現実的な経済モデルにおいて、リスクを事前に推定し、適切に反応する政策を導出する。（2）近年、日本では自然災害による甚大な被害が多発し、国際関係でも緊張感が高まっており、経済システム外からのリスクを無視できる状況にない。本研究では、自然災害リスクや国際関係リスクへ適切に反応する政策も導出する。 R3年度は、「理論」グループ、「実証」グループ、及び「シミュレーション/ネットワーク」グループの3グループにより、以下の研究計画に取り組んでいた。理論グループは、AI技術による将来予測の経済主体のモデル化や国際モデルにおける貿易不均衡・貿易戦争リスクの分析を行った。実証グループは、少子高齢化と社会保障に関する実証分析、地方自治体レベルのデータによるリスク及び政策効果分析、国際関係リスクに関するオンライン・サーベイ実験、リスク推定のためのテキストデータベース構築を行った。シミュレーション/ネットワークグループは、金融・銀行間ネットワークモデルにおけるシステミックリスク分析を行った。これらのグループは互いに連携し、それぞれの専門分野において研究成果を共有しながら計画を進めた。

  • Development of a Social Risk Visualization System and a Decision-Making Ssytem that Responds Appropriately to Social Risks
    上東 貴志, 大路 剛, 笹原 和俊, 松尾美和, 柴本昌彦, 加藤諒, 楳本大悟, 吉田光男, 鳥海不二夫, 瀧川裕貴, 永吉希久子
    Japanese Science abd Technology Agency, JST- Mirai Program, Kobe University, Apr. 2020 - Mar. 2022, Principal investigator

  • Discount rate and international environmental agreement in climate change
    赤尾 健一, 上東 貴志, 西村 和雄, 石井 仁司
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Waseda University, Apr. 2018 - Mar. 2021, Coinvestigator
    The choice of discount rate critically affects the climate change policy because the emissions of greenhouse gases influence the global climate system over thousands of years and a slight difference in discount rates makes a huge difference in the present values of the benefits and costs in the far future. We propose a social discount rate that is intergenerationally justifiable from procedural fairness. We investigate the properties of the discount rate with some parametric models.
    Another crucial challenge against climate change in social sciences is understanding the efforts for international coordination and how to realize the desired outcome. This study formulates the international environmental negotiation as an asymmetric noncooperative differential game. We investigated the properties of the Markov perfect Nash equilibrium, including the stability of the steady states and the relation with discount rates, among others. We also addressed the existence of a solution.

  • Human Capital and Economic Growth
    西村 和雄, 上東 貴志, 岩佐 和道, 関根 仁博, 井上 寛規
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Kobe University, Apr. 2016 - Mar. 2021, Coinvestigator
    The objective of this study is to understand the endogenous factors of economic growth that capture economic growth from various perspectives, with humancapital accumulation as the keyword. We will theoretically analyze the role of human capital in an economic growth model and conduct empirical research on the contribution of educational investment, including even school and home education.Specifically, we will examine a paper on the geese pattern theory of economic growth proposed by Akamatsu (1956) (newly industrializing countries follow advanced countries in economic development, just as geese fly in flocks in the sky); in school education, we will examine the relationship between the number of hours of classes in science and mathematics subjects and the number of patent applications and renewals in Japan; and in individual Regarding heterogeneity, we presented a paper on individual differences in thinking and behavior by measuring brain activity.

  • Dynamic Extensions of Theories of Trade via Time Zone Differences and Trade in Services/Tasks and Their Implications for Economic Growth
    中西 訓嗣, 趙 来勲, 胡 云芳, 上東 貴志, 土居 潤子, 岩佐 和道, 橋本 賢一, 市野 泰和
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), Kobe University, Apr. 2016 - Mar. 2021, Coinvestigator
    In our project we had three separated but interrelated groups: Group-A dealt with the extension of static trade models; Group-B dealt with the development of basic tools for the dynamic analysis; Group-C dealt with the implementation of the dynamic analytical tools to applied fields. Group-A has constructed various static trade models incorporating the relation between the time zone differences and the shift-working as well as the characteristics of trade in services. Group-B has constructed various dynamic trade models of foreign direct investment and international factor movements incorporating the notions of trade in tasks and task decompositions. Group-C has considered and analyzed how the relationship between the shift-working due to time zone differences and the market/home production sectors could affect the properties of the long-run stationary equilibria.

  • Study on formation and development process of Japanese management system
    伊藤 宗彦, 遠藤 貴宏, 上東 貴志, 西谷 公孝, 喜田 昌樹, 榎本 正博, 濱口 伸明, 高槻 泰郎, 松本 陽一
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), Kobe University, Apr. 2016 - Mar. 2020, Coinvestigator
    The purpose of this research is to analyze the decision-making process of managers at the stage of company development, growth and maturity, and redefine the essence of the Japanese-style management system based on Kanebo materials held by Kobe University. It is to propose what corporate governance should be. The research results are large and can be summarized in the following three points. (1) There are enormous amounts of Kanebo materials, and most of them are handwritten materials, so we developed a process to digitize and check. (2) It became possible to search by converting the data in text form into a database. (3) Based on the data on the decision making, such as factory data and the general meeting of shareholders, the decision making mechanism of Kanebo's management became clear. These valuable materials and analysis results were widely published on the web.

  • Risk Management of Comprehensive Monetary/Fiscal Policy: Theory, Empirics, and Simulations
    上東 貴志, 西村 和雄, 高橋 亘, 貝原 俊也, 北野 重人, 敦賀 貴之, 堀井 亮, 小林 照義, 柴本 昌彦, 岩佐 和道, 齋藤 政彦
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (S), Kobe University, May 2015 - Mar. 2020, Principal investigator
    In this study, we conducted theoretical, empirical, and simulation analyses of the risk management of comprehensive monetary and fiscal policy. In our theoretical analysis, we found that the collapses of bubbles in different countries are closely related. Furthermore, in the empirical and simulation studies on monetary and fiscal policy, we showed how “risk” as a macroeconomic variable reacts to monetary policy, and evaluated the Bank of Japan’s policy responses after the collapse of the bubble economy in the early 1990s and the global financial crisis in 2008.

  • Market intermediation and economic growth
    堀井 亮, 上東 貴志, 中島 賢太郎, 奥井 亮
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Osaka University, Apr. 2015 - Mar. 2020, Coinvestigator
    Previous studies in economic growth have been considering the situation in which producing firms and households can trade goods and labor directly and did not explicitly introduce intermediate agents who have essential roles in actual market transactions. However, recent innovations in information technology and the rise of new transaction technologies suggest that improved market mediation could affect economic growth or possibly give rise to a bubble-like phenomenon. In this project, three research institutes in Japan collaborated with Tinbergen Institute in Netherland to conduct related research.

  • Analysis of economic development and income inequality with dynamic trade models
    Iwasa Kazumichi, Ikeda Shinsuke, Kamihigashi Takashi, Nishimura Kazuo
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Kobe University, Apr. 2016 - Mar. 2019, Coinvestigator
    With decreasing marginal impatience based on empirical data, we show that immigration of poor households without asset yields an increase in capital stock in the host country, which results in improvement of all households' welfare levels in the long run. We show that opening trade destabilizes the autarkic steady state in the sense that under free trade the welfare level of each country in the long run depends not only on economic fundamentals in each country, but also on households' expectations.

  • Monetary Policy of Tokugawa Shogunate: Empirical and Theoretical Analysis based on Historical Evidence
    TAKAHASHI Wataru, MURA Kazuaki, KINARI Yusuke
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Osaka University of Economics, Apr. 2013 - Mar. 2018, Coinvestigator
    One of the achievement of this research project is to find the “learning process” of the Shogunate through implementing economic policy. Through the Tokugawa period (1603-1867), the Shogunate often intervened the market to keep the rice price stable, based on his absolute authority. We find three phases of the market interventions during the period from the mid-18th to the early 19th century. First, the Shogunate conducted the large-sized intervention in the way ignoring the market participants, but had to abandon it. Second, in the wake of this failure, the Shogunate conducted small-sized interventions in the way just following the arguments of the market participants, which were not so effective. Finally, the Shogunate achieved the policy goal by the commitment with large-sized interventions as one of the communication tools to convey his intention to the market participants.

  • Analysis of dynamic trade models with non-homothetic preferences or endogenous time preferences(Fostering Joint International Research)
    Iwasa Kazumichi, Soger Gerhard, Foellmi Reto, Ikeda Shinsuke, Kamihigashi Takashi, Nishimura Kazuo
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Fund for the Promotion of Joint International Research (Fostering Joint International Research), Kobe University, 2016 - 2018, Coinvestigator
    In standard models where households choose their consumption levels and their labor supply at each period of time, we clarify the economic implication of the necessary condition for the existence of periodic optimal solutions or chaos. We show that with non-homothetic preferences, the distribution of income affects the demand for each of the factors of production, and hence it affects not only the speed of convergence to the steady state, but also the total wealth in the long run. Also, we find that the capital intensity ranking of luxury and necessity decides the relationship between income inequality and the economic growth.

  • リスク社会におけるメディアの発達と公共性の構造転換～ネットワーク・モデルの比較行動学に基づく理論・実証・シミュレーション分析
    遠藤薫, 佐藤嘉倫, 数土直紀, 上東貴志, 品田裕, 貝原俊也, 鳥海不二夫, 栗原聡, 榊剛史
    独立行政法人日本学術振興会, 課題設定による先導的人文学・社会科学研究推進事業（領域開拓プログラム）, 経済変動に関する分析, 2014 - 2017, Others
    Competitive research funding

  • 複数の社会経済現象の相互作用のモデル構築とその応用研究（多層マルチ時空間スケール社会・経済シミュレーション技術の研究・開発）（）
    上東 貴志
    国立研究開発法人理化学研究所, 科学技術試験研究委託事業, サブ課題E「社会・経済シミュレーションモデルの評価手法の開発」⑤-1近似ベイズ計算によるモデル評価技術の開発, 2017, Others
    Competitive research funding

  • Analysis of dynamic trade models with non-homothetic preferences or endogenous time preferences
    IWASA Kazumichi, ZHAO Laixun, NISHIMURA Kazuo, KAMIHIGASHI Takashi
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Kobe University, 01 Apr. 2013 - 31 Mar. 2016
    We assume non-homothetic preferences or endogenous time preferences in standard dynamic models, and examine the role of households' preferences on the property of steady states in the models. With non-homothetic preferences, we show the possibility that main results of the models drastically change when one good is inferior. Also, with endogenous time preferences, we have several new findings on the relationship between income inequality and economic growth that would be useful.

  • Application of nonlinear equilibrium dynamics to global environmental issues
    Akao Ken-Ichi, Kamihigashi Takashi
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Waseda University, 01 Apr. 2011 - 31 Mar. 2016
    Global environmental issues such as the global warming and the biodiversity loss have serious long-term consequences and several other novel features. Using nonlinear economic dynamics models incorporating those features, we analyzed the interaction between the society and the issues. The models are: dynamic game model with an environmental asset, non-concave optimal growth model, endogenous growth model with large and unpredictable shocks, and a social planner model for agents with non-exponential discounting. From them we have several new results as shown in “Research Performance” below. Some of them are found in our papers published in international journals. We also surveyed some related research issues that are recently extensively studied. They include the axiomatic approaches to intergenerational equity and the declining discount rate for social cost/benefit analysis. Our results help to understand why and when we choose an unsustainable path and to consider how to avoid it.

  • Deflation, Strong Yen, and Financial Crises
    KAMIHIGASHI Takashi, KITANO Shigeto, KOBAYASHI Teruyoshi, TSURUGA Takayuki, JINUSHI Toshiki, TAKAHASHI Wataru, TACHIBANA Minoru, SHIBAMOTO Masahiko
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), Kobe University, Oct. 2012 - Mar. 2015, Principal investigator
    As empirical research, we considered various problems concerning the policies based on quantitative easing adopted in the face of the current worldwide deflationary trend, considered how the adoption of inflation targeting has affected the economic performance after the global financial crisis, and analyzed the mechanisms of real interest fluctuations. In addition, we considered the characteristics of business cycles in emerging economies in Asia, and analyzed the propagation mechanisms of exchange rate adjustments, expansionary monetary policy, and expansionary fiscal policy during the Korekiyo Takahashi period. As theoretical research, we obtained a condition for the nonexistence of bubbles, and modified a standard network model of contagion to analyze situations in which banks hold external risky assets.

  • Fragmentation, time zones, and their dynamic consequences
    NAKANISHI Noritsugu, ZHAO Laixun, DEI Fumio, KAMIHIGASHI Takashi, HU Yunfang, DOI Junko
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), Kobe University, Apr. 2010 - Mar. 2015, Coinvestigator
    In our project we had two separated but interrelated groups: one dealt with static models and the other dealt with dynamic models. The former group has elucidated two important time-zone-related factors (i.e., the time-reduction effect and the day-night reversal effect) that determine the structure of international trade and investigated how they affect such issues as the reduction in shift working, the domestic income distribution, the possession of foreign affiliates by multinationals, offshoring of core tasks and peripheral tasks, international income inequalities, incentives for the formation of FTAs, and so forth. The latter group has elucidated some fundamental properties of the Bellman equation in dynamic programming and investigated such issues as the effects of fiscal policies, international income transfers, and capital movements in dynamic trade models, and the indeterminacy of dynamic equilibrium paths, and so forth.

  • Complex Dynamic Analysis on Economic Crisis and Social Infrastructure
    YANO Makoto, SHIBATA Akihisa, NISHIMURA Kazuo, OTA Shozo, KAJII Atsushi, DEI Fumio, KAMIHIGASHI Takashi, MINO Kazuo, HIGUCHI Yoshio, HIRATA Junichi, FOOTE Daniel H., SEKIGUCHI Tadashi, HIRAGUCHI Ryoji, ASANO Takao, KOMATSUBARA Takashi, NAKAZAWA Masahiko, SEKO Miki, NAOI Michio, FUTAGAMI Koichi, IWAISAKO Tatsuro
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Specially Promoted Research, Kyoto University, 2011 - 2015, Coinvestigator
    Following the world financial crisis and the eastern Japan great earthquake, this project, by means of theoretical and empirical analyses as well as data building, has studied the processes in which an economic crisis forms and is overcome. A major theoretical contribution is to demonstrate that even if the market is well functioning, it is natural that an extreme crisis occurs once in a while due to the interaction between innovation and market quality and that the recovery process after a crisis can be crucially influenced by the market infrastructure formed during and soon after the crisis. We have also obtained several important empirical results by building original data. The main results include the following: Japanese unconventional monetary policy after the financial crisis may have created strong noises that reduced financial market quality and delayed the recovery. It is important to raise the quality of insurance markets for natural disasters, including earthquakes, in order to equalize social costs of potential disasters across various regions.

  • Research on dynamic general equilibrium models of international trade and investment with endogenous time preference
    ZHAO Laixun, KIKUCHI Toru, DOI Junko, HU Yunfang, KAMIHIGASHI Takashi
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), Kobe University, 2006 - 2009, Coinvestigator
    An international conference was successfully held in 2007, in which more than 20 famous economists were invited to present their work on international trade and economics dynamics. The conference papers were later published in a book by Heidelberg Springer, 2009. Numerous research workshops and seminars were subsequently held. Members continued independent and joint research, actively presented their work in international conferences. The group eventually published three books and more than 20 papers in highly regarded international refereed journals within 4 years of the project.

  • 上東 貴志
    科学研究費補助金／基盤研究(A), 2009, Principal investigator
    Competitive research funding

  • Research on business fluctuations caused by discrete choice problems
    KAMIHIGASHI Takashi
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Kobe University, 2003 - 2006, Principal investigator
    The purpose of this research is to study the relationship between discrete choice problems and business fluctuations. Discrete choice problems are important since many products in reality are indivisible. In this research, it has been shown that at the individual level, discrete choice problems result in complex dynamics. A more precise statement of this result is as follows: Under quite general conditions, the optimal paths of deterministic infinite-horizon discrete-choice problems almost never converge to a steady state or a cycle. In terms of techniques, in stead of dynamic programming, I have employed the approach of viewing an infinite horizon optimization problem as an optimization problem in an infinite dimensional space. By comparing the state space and the space of optimal paths, I have shown that optimal paths almost always exhibit complex dynamics. I am in the process of preparing a paper based on the above result for publication in a journal.

  • 新しい日本型経済パラダイムの研究教育拠点
    三谷 直紀
    2006
    Competitive research funding

  • 新しい日本型経済パラダイムの研究教育拠点
    三谷 直紀
    2005
    Competitive research funding

  • マクロダイナミックスの波動分解による分析(理論と景気予測への応用)
    上東 貴志
    日本学術振興会, 科学研究費助成事業, 若手研究(B), 神戸大学, 2001 - 2002, Principal investigator
    本研究の究極的な目的は、景気変動や政策導入後の経済変動を正確に予測できるようなモデルを構築することであった。これはあくまで究極的な目的であり、二年間という短い期間で達成できるものではない。現実問題としては、その様なモデルを構築すること自体が不可能に近いと考えられる。しかし、本研究で発展させる波動分解の理論を用いれば、それも近い将来実現する可能性がある。究極的な目的に向けて、科学研究費交付期間内に達成されるべき目的は二つあった。第一の目的は、実際の経済でどのような複雑なダイナミックスが観測されても、そのダイナミックスを説明できる動的最適化と一般均衡に基づいた経済モデルが存在することを明らかにすることであった。第二の目的は、モデルの景気予測への応用である。波動分解に基づいたモデルを用いた景気予測と既存の予測方法とを比較し、前者が予測力の面で優れていることを明らかにすることであった。 今年度は、どのような複雑なダイナミックスでも波動分解によって説明することができる、すなわち、どのような複雑なダイナミックスに対しても、それを説明できる動的最適化と一般均衡に基づいた経済モデルが存在するという理論的結果を示した論文を完成させた。 さらに、モデルの景気変動の予測への応用に向けて数値的な手法を開発した。その手法に基づいたコンピュータ・プログラムを作成し、実験的な景気変動の予測を行なった。シミュレーションに基づいた論文は現在執筆中である。

■ Industrial Property Rights
  • 画像認識装置、画像認識方法、コンピュータプログラム、及び製品監視システム
    陳 金輝, 上東 貴志, 伊藤 宗彦, 髙槻 泰郎
    特願2017-063675, 28 Mar. 2017, 特開2018-165948, 25 Oct. 2018, 特許第6964857号, 22 Oct. 2021, 10 Nov. 2021
    Patent right
    IRI

  • 学術論文の査読者検索装置、査読者検索方法、及び査読者検索プログラム
    幸若完壮, 上東貴志
    特願2020-014904, 31 Jan. 2020, 特開2021-121903, 26 Aug. 2021
    Patent right
    IRI

■ Social Contribution Activities
  • Editor-in-Chief
    Springer
    Chief, Journal of Computational Social Science, Jan. 2018 - Present

  • Editor-in-Chief
    Wiley
    Chief, International Journal of Economic Theory, - Present

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