写真a

HARUYAMA Tetsugen

Position

Professor

Degree

D.Phil in Economics(University of Oxford), M.Phil in Economics(University of Oxford), BSc (Hons) in Economics(University of Warwick)

Research Field

Humanities & Social Sciences / Economic theory

Graduating School 【 display / non-display

  • University of Warwick   Dept. of Economics (Bachelor of Science)   Graduated

    1987.10 - 1990.7

Graduate School 【 display / non-display

  • University of Oxford   Graduate School, Division of Economics   Economics   Doctor's Course   Completed

    1992.10 - 1997.7

  • University of Oxford   Graduate School, Division of Economics   Economics   Master's Course   Completed

    1990.10 - 1992.6

External Career 【 display / non-display

  • 神戸大学   名誉教授

    2026.4

  • 神戸大学   経済学研究科

    2004.4 - 2026.3

  • University of Glasgow   Department of Economics

    2003.10 - 2004.3

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    Country:United Kingdom

  • University of Glasgow   Department of Economics

    1996.10 - 2003.9

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    Country:United Kingdom

 

Papers 【 display / non-display

  • A Schumpeterian Exploration of Gini and Top/Bottom Income Shares Reviewed

    Tetsugen Haruyama

    Macroeconomic Dynamics   29 ( e49 )   2024.10

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    Publisher:Cambridge University Press (CUP)  

    Abstract

    Data show that an increase in the Gini coefficient is associated with a falling bottom $p_{B}$ % income share and an increasing top $p_{T}$ % income share where, for example $p_{B}$ = 40 and $p_{T}$ = 1. This relationship, which we call the $X$ inequality relationship, is pervasive in the sense that it is observed in many countries, including the US, the UK, France and others. The purpose of this paper is (i) to construct a Schumpeterian growth model to explain the relationship, and (ii) to identify/quantify factors behind it via calibration of the US economy. Our model gives rise to a double-Pareto distribution of income as a result of entrant and incumbent innovations. Its advantage is that it allows us to develop iso-Gini loci and iso-income share schedules in a tractable way. Using a double-Pareto distribution as an approximation of an underlying income distribution, calibration analysis reveals that a declining business dynamism and fiscal policy changes in the past decades played a significant role in generating the $X$ inequality relationship in the US.

    DOI: 10.1017/s1365100524000403

  • On Demand Shocks and Supply Shocks: State-Space Analysis of AD-AS Model

    Journal of economics and business administration   227 ( 5 )   2023.9

  • On Entrant and Incumbent Innovations

    224 ( 5 )   1 - 12   2021.11

  • Innovators and imitators in a world economy Reviewed

    Tetsugen Haruyama, Ken-ichi Hashimoto

    JOURNAL OF ECONOMICS   130 ( 2 )   157 - 186   2020.7

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  • THE CLEANSING EFFECT OF R&D SUBSIDIES Reviewed

    Tetsugen Haruyama

    BULLETIN OF ECONOMIC RESEARCH   70 ( 4 )   452 - 458   2018.10

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Books and Other Publications 【 display / non-display

  • 経済学のためのPython入門

    春山鉄源( Role: Sole author)

    新世社  2025.10 

  • 経済学の歩き方

    神戸大学経済経営学会 編集委員会( Role: Contributor ,  2.4 Pythonによるマクロ経済分析)

    神戸大学経済経営学会  2023.3 

  • ハンドブック経済学[改訂版]

    神戸大学経済経営学会( Role: Contributor ,  3. マクロ経済学)

    ミネルヴァ書房  2016.3  ( ISBN:4623076725

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  • 現代経済学の潮流 Reviewed

    ( Role: Contributor)

    東洋経済新報社  2013.7  ( ISBN:4492314385

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  • 人口減少と持続可能な経済成長 (新しい日本型経済パラダイム 第 1巻)

    三谷 直紀( Role: Contributor ,  第5章 完全競争下でのイノベーション)

    勁草書房  2007.11  ( ISBN:4326502932

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Review Papers (Misc) 【 display / non-display

  • A Schumpeterian Microfoundation of the Geometric Brownian Motion of Firm Size and Zipf’s Law

    2024.5

  • Pythonのすすめ

    春山鉄源

    経済学・経営学学習のために   前期号   17 - 26   2021

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    Publisher:神戸大学経済経営学会  

  • 逐次的テークオフにより広がる経済間の所得格差

    春山鉄源

    Discussion Paper No. 1826, Kobe University   2018.10

  • The Patent-issuing Rules and Economic Growth: Are We in a “Wrong” Patent Regime?

    Tetsugen Haruyama, Kaz Miyagiwa

    Economics Research Working Paper Series, No.127. Florida International University   2018.1

  • 「豊かさ」と経済学

    春山鉄源

    経済学・経営学学習のために   前期号   11 - 22   2012

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    Publisher:神戸大学経済経営学会  

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Presentations 【 display / non-display

  • A Shumpeterian Microfoundation of the Geometric Brownian Motion of Firm Size and Zipf's Law

    2025.6 

  • A Schumpeterian Exploration of Gini and Top/Bottom Income Shares Invited

    Tetsugen HARUYAMA

    BK21 Thursday Seminar, Sungkyunkwan University  2024.9 

  • A Shumpeterian Microfoundation of the Geometric Brownian Motion of Firm Size and Zipf's Law

    Tetsugen HARUYAMA

    Singapore Economic Review Conference 2024 

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    Event date: 2024.7 - 2024.8

  • A Schumpeterian Exploration of Gini and Top/Bottom Income Shares

    Tetsugen Haruyama

    2023 Symposium on Economics and Finance in the Asia-Pacific 

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    Event date: 2023.11

  • A Schumpeterian Exploration of Gini and Top/Bottom Income Shares

    2023.7  Econometric Society

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    Event date: 2023.7

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Works 【 display / non-display

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Grant-in-Aid for Scientific Research 【 display / non-display

  • プログラミングと経済学の教育効果について

    2024.4 - 2028.3

    JSPS Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research(C)

    春山 鉄源

 

Committee Memberships 【 display / non-display

  • 2014.6 - 2016.6   日本経済学会  代議員

  • 2012.6 - 2014.6   日本経済学会  代議員

  • 2006.10 - 2008.9   神戸大学・経済経営学会  国民経済雑誌・編集委員

Academic Activities 【 display / non-display

  • インスブルック大学 博士論文審査員 International contribution

    Role(s): Review, evaluation

    ( オーストリア ) 2023.5

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    Type:Scientific advice/Review 

    Hak Ping Yeung氏の博士論文"China's Belt and Road Initiative and Its Impact on Host Countries: Empirical Evidence for Instibutional Quality, Economic Complexity and Life Expectancy"の審査員

  • Asian Meeting of Econometric Society, Empirical Macroeconomics

    Role(s): Panel moderator, session chair, etc.

    Econometric Society  2021.6

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    Type:Academic society, research group, etc.