Updated on 2024/12/11

写真a

 
YAMAGUCHI Tomoyasu
 
Organization
Faculty of Commerce Professor
Other responsible organization
Commerce Course of Graduate School of Commerce, Master's Program
External link

Degree

  • 博士(経営学) ( 東北大学 )

  • 修士(経営学) ( 東北大学 )

Education

  • 2011.3
     

    Tohoku University   doctor course   completed

  • 2008.3
     

    Tohoku University   master course   completed

  • 1999.3
     

    Fukushima University   graduated

  • 1995.3
     

    千葉県立安房高等学校   普通科   graduated

Research History

  • 2022.4 - Now

    Chuo University   Faculty of Commerce   Professor

  • 2022.4 - 2023.3

    Tohoku Gakuin University   Faculty of Business Administration

  • 2020.4 - 2022.3

    Tohoku Gakuin University   Faculty of Business Administration   Professor

  • 2019.4 - 2021.9

    Sendai Shirayuri Women's College

  • 2012.4 - 2020.3

    Tohoku Gakuin University   Faculty of Business Administration   Associate Professor

  • 2017.9 - 2018.8

    Southern Cross University   Visiting Fellow

  • 2012.4 - 2013.9

    Fukushima University

  • 2011.4 - 2012.3

    Tohoku Gakuin University   Faculty of Business Administration   Lecturer

  • 2009.4 - 2011.3

    日本学術振興会   特別研究員DC2

  • 2004.4 - 2008.3

    福島県立東白川農商高等学校   教諭

  • 2000.4 - 2004.3

    福島県立郡山商業高等学校   教諭

  • 1999.4 - 2000.3

    福島県立福島商業高等学校   常勤講師

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Professional Memberships

  • 日本管理会計学会

  • 日本会計研究学会

Research Interests

  • 利益マネジメント

  • 実証会計理論

  • 財務会計

Research Areas

  • Humanities & Social Sciences / Accounting  / Accounting

Papers

  • Real discretionary behavior to achieve earnings benchmarks: A replication study using measures adjusted with a performance-matching technique

    Tomoyasu Yamaguchi

    The Accounting Research   ( 63 )   59 - 69   2024.12

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Research paper (bulletin of university, research institution)  

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  • Accounting conservatism and income smoothing after the Japanese Sarbanes–Oxley Act Reviewed

    Ian Eddie, Tomoyasu Yamaguchi

    Asian Journal of Business and Accounting   17 ( 1 )   1 - 41   2024.6

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

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  • 四半期開示の義務化が経営者の会計的裁量行動に与える影響

    山口朋泰, 古賀裕也

    商学論纂   65 ( 3-4 )   47 - 81   2023.12

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    Language:Japanese   Publishing type:Research paper (bulletin of university, research institution)  

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  • Does mandatory quarterly reporting induce managerial myopic behavior? Evidence from Japan Reviewed

    Yuya Koga, Tomoyasu Yamaguchi

    Finance Research Letters   56   104142   2023.9

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    Language:English   Publishing type:Research paper (scientific journal)  

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  • Earnings management to achieve industry-average profitability in Japan Reviewed

    Tomoyasu Yamaguchi

    Asia-Pacific Journal of Accounting & Economics   29 ( 2 )   402 - 431   2022.3

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Informa UK Limited  

    DOI: 10.1080/16081625.2020.1726188

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  • 日本企業の経営者交代の特性-経営者の属性,財務比率,持株比率の観点から-

    榎本正博, 山口朋泰

    国民経済雑誌   222 ( 6 )   39 - 65   2020.12

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    Language:Japanese   Publishing type:Research paper (bulletin of university, research institution)  

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  • 連続増益の達成と実体的裁量行動

    山口朋泰

    東北学院大学経営学論集   ( 16 )   1 - 16   2020.12

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    Authorship:Lead author   Language:Japanese   Publishing type:Research paper (bulletin of university, research institution)  

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  • 転換社債の発行と利益マネジメント

    山口朋泰

    東北学院大学経営学論集   ( 14 )   49 - 67   2019.12

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    Language:Japanese  

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  • 証券発行と利益マネジメント

    山口朋泰

    東北学院大学経営学論集   ( 13 )   25 - 38   2019.3

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  • A cross-country study on the relationship between financial development and earnings management Reviewed

    Masahiro Enomoto, Fumihiko Kimura, Tomoyasu Yamaguchi

    Journal of International Financial Management and Accounting   29 ( 2 )   166 - 194   2018.6

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Blackwell Publishing Ltd  

    This study investigates whether a country's level of financial development is associated with earnings management in an international setting. Financial development is likely to heighten the monitoring and scrutiny of accounting numbers because of strengthened investor protection laws and regulations as well as sophisticated market participants. Therefore, we first hypothesize that both accrual-based and real earnings management decrease with greater financial development. However, research shows that managers tend to apply real earnings management, instead of accrual-based earnings management, under strict accounting standards, regulations, and close auditor scrutiny. Thus, we explore the alternative hypothesis that accrual-based earnings management decreases but real earnings management increases along with higher financial development. We examine the relationship between financial development and both types of earnings management using 56,830 observations in 37 countries covering the period 2009–2012. The results indicate that both types of earnings management are more restrained under higher levels of financial development.

    DOI: 10.1111/jifm.12078

    Scopus

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  • Discontinuities in earnings and earnings change distributions after J-SOX implementation: Empirical evidence from Japan Reviewed

    Masahiro Enomoto, Tomoyasu Yamaguchi

    Journal of Accounting and Public Policy   36 ( 1 )   82 - 98   2017.2

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    Language:English  

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  • The Stock Market Response to Achieving Managers' Earnings Forecasts through Earnings Management

    ( 21 )   1 - 15   2016.12

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    Language:Japanese  

    CiNii Books

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  • Accrual-based and real earnings management: An international comparison for investor protection Reviewed

    Masahiro Enomoto, Fumihiko Kimura, Tomoyasu Yamaguchi

    Journal of Contemporary Accounting and Economics   11 ( 3 )   183 - 198   2015.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier Ltd  

    This paper examines the differences in accrual-based and real earnings management across countries from the perspective of investor protection. Following prior research (Leuz et al., 2003), we hypothesize that accrual-based earnings management is more constrained by strict discipline in countries with stronger investor protection. For real earnings management in countries with stronger investor protection, we have two hypotheses. One is that real earnings management is more often implemented to substitute for accrual-based earnings management. The other is that real earnings management is less often implemented, as with accrual-based earnings management. Our examination uses data from 222,513 firm-year observations drawn from 38 countries covering 1991 to 2010. The results show that managers in countries with stronger investor protection tend to engage in real earnings management instead of accrual-based earnings management. We also find that real earnings management is constrained by analyst following. Our results are not affected by the control of audit quality or the calculation method used for earnings management measures according to country and year.

    DOI: 10.1016/j.jcae.2015.07.001

    Scopus

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  • 日本企業の利益マネジメントの傾向分析-国際比較の観点から-

    榎本正博, 木村史彦, 山口朋泰

    産業経理   73 ( 3 )   109 - 124   2013.10

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:産業經理協會  

    CiNii Books

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  • Management Turnover and Earnings Management: Empirical analysis of big bath by incoming managers

    51 ( 5 )   20 - 33   2013.5

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    CiNii Books

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  • A Review of empirical research on real discretion focusing on capture methods

    Yamaguchi Tonoyasu

    1 ( 1 )   73 - 111   2011.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

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    Other Link: http://id.nii.ac.jp/1204/00000054/

  • 経営者交代企業の基礎的調査と財務比率分析

    山口朋泰

    産業経理   71 ( 2 )   175 - 189   2011.7

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:産業經理協會  

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  • 実体的裁量行動の要因に関する実証分析 Reviewed

    山口朋泰

    管理会計学   19 ( 1 )   57 - 76   2011.3

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  • Opportunistic real discretion and future operating performance Reviewed

    Accounting progress   ( 10 )   117 - 137   2009.9

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    CiNii Books

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  • 利益ベンチマークの達成と実体的裁量行動 Reviewed

    山口朋泰

    研究年報経済学   69 ( 4 )   133 - 154   2009.2

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Books

  • 日本企業の利益マネジメント-実体的裁量行動の実証分析

    山口 朋泰( Role: Sole author)

    中央経済社  2021.9  ( ISBN:4502396311

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    Total pages:261  

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MISC

  • 書評:桜井久勝著『利益調整-発生主義会計の光と影』 Invited

    山口朋泰

    証券アナリストジャーナル   61 ( 11 )   134 - 135   2023.11

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  • 財務情報を用いた実体的裁量行動の把握 Invited

    山口朋泰

    企業会計   74 ( 8 )   38 - 44   2022.7

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)  

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  • 利益マネジメントの国際比較研究(2): 金融発展,IFRS,文化的要因の影響 Invited

    山口朋泰

    企業会計   69 ( 2 )   6 - 7   2017.2

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)  

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  • 利益マネジメントの国際比較研究(1): 投資家保護の影響 Invited

    山口朋泰

    企業会計   69 ( 1 )   6 - 7   2017.1

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)  

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  • IFRSを任意適用する潜在的理由-のれんの会計処理の相違がもたらす会計基準の選択行動- Invited

    山口朋泰

    会計人コース   50 ( 7 )   78 - 80   2015.6

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    Language:Japanese  

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  • スカイマークの経営破綻は予知できなかったのか?-倒産予知モデルを用いた分析- Invited

    山口朋泰

    会計人コース   50 ( 6 )   62 - 64   2015.5

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    Language:Japanese  

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Presentations

  • 利益調整研究の展開(統一論題「財務会計の機能:実証研究の展開」) Invited

    山口朋泰

    日本経済会計学会 第41回年次大会  2024.8 

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    Language:Japanese   Presentation type:Oral presentation (invited, special)  

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  • 日本企業の経営者はビジネス活動を通じて利益を調整しているのか? Invited

    山口朋泰

    東北学院大学経営研究所第56回研究会  2023.7 

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    Presentation type:Public lecture, seminar, tutorial, course, or other speech  

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  • 日本企業の利益マネジメント-実体的裁量行動の実証分析 Invited

    山口朋泰

    名古屋大学経済学研究科セミナー  2022.11 

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  • 日本企業の利益マネジメント-実体的裁量行動の実証分析

    山口朋泰

    中央大学企業研究所公開研究会  2022.6 

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  • 日本企業の利益マネジメント Invited

    山口朋泰

    みずほ証券インサイト&カタリスト(IC)セミナー  2022.3 

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    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

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  • The Impact of Japanese Regulatory Changes on Accrual-Based and Real Earnings Management International conference

    Masahiro Enomoto, Tomoyasu Yamaguchi

    American Accounting Association Annual Meeting  2016.8 

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    Language:English   Presentation type:Poster presentation  

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  • The Impact of Japanese Regulatory Changes on Accrual-Based and Real Earnings Management International conference

    Masahiro Enomoto, Tomoyasu Yamaguchi

    39th European Accounting Association Annual Congress  2016.5 

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    Language:English   Presentation type:Oral presentation (general)  

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  • Market Response to Achieving Management Earnings Forecasts with Using Accrual-Based and Real Earnings Management: Empirical Evidence from Japan

    Tomoyasu Yamaguchi

    2016.1 

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    Language:English  

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  • The Impact of Japanese Regulatory Changes on Accrual-Based and Real Earnings Management International conference

    Masahiro Enomoto, Tomoyasu Yamaguchi

    2016 Global Conference on Business and Finance  2016.1 

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    Language:English   Presentation type:Oral presentation (general)  

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  • Real and Accrual-Based Earnings Management to Achieve Industry-Average Profitability: Empirical Evidence from Japan Invited

    Tomoyasu Yamaguchi

    Tokyo Accounting Workshop  2015.11 

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    Presentation type:Public lecture, seminar, tutorial, course, or other speech  

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  • A Cross-Country Study on the Relationship between Financial Development and Earnings Management International conference

    Masahiro Enomoto, Fumihiko Kimura, Tomoyasu Yamaguchi

    Journal of International Accounting Research Conference 2014  2014.6 

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    Language:English   Presentation type:Oral presentation (general)  

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  • A Cross-Country Study on the Relationship between Financial Development and Earnings Management International conference

    Masahiro Enomoto, Fumihiko Kimura, Tomoyasu Yamaguchi

    The 37th Annual Congress of the European Accounting Association  2014.5 

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    Language:English   Presentation type:Oral presentation (general)  

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  • A Cross-Country Study on the Relationship between Financial Development and Earnings Management

    Masahiro Enomoto, Fumihiko Kimura, Tomoyasu Yamaguchi

    2014 International Conference on Accounting and Information Technology  2014.2 

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    Language:English  

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  • 日本企業の利益マネジメントの傾向分析-国際比較の観点から-

    榎本正博, 木村史彦, 山口朋泰

    日本会計研究学会  2013.9 

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    Language:Japanese  

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  • Accrual-Based and Real Earnings Management: An International Comparison for Investor Protection International conference

    Masahiro Enomoto, Fumihiko Kimura, Tomoyasu Yamaguchi

    6TH INTERNATIONAL WORKSHOP ON ACCOUNTING & REGULATION  2013.7 

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  • 新任経営者によるビッグ・バスとその経済的帰結

    山口朋泰

    東北大学会計大学院 会計研究会  2013.3 

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  • Accrual-Based and Real Earnings Management: An International Comparison for Investor Protection International conference

    Masahiro Enomoto, Fumihiko Kimura, Tomoyasu Yamaguchi

    The 13th Annual Conference of The Asian Academic Accounting Association  2012.11 

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    Language:English   Presentation type:Oral presentation (general)  

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  • 経営者交代前後の利益マネジメントに関する実証分析

    山口朋泰

    メルコ学術振興財団セミナー  2012.2 

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    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

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  • 経営者交代と利益マネジメント

    山口朋泰

    RIEBセミナー(TJAR Workshop共催)  2011.3 

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    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

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  • 経営者交代と利益マネジメント

    山口朋泰

    産業経理協会「経営戦略会計」調査研究委員会  2010.10 

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    Language:Japanese   Presentation type:Oral presentation (invited, special)  

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  • 経営者交代と利益マネジメント

    山口朋泰

    日本管理会計学会 2010年度年次全国大会  2010.9 

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  • 実体的裁量行動の要因分析

    山口朋泰

    現代会計政策研究会  2009.8 

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  • 日本企業の実体的裁量行動-損失回避及び減益回避行動に関する実証分析-

    山口朋泰

    第61回 東北経済学会  2007.10 

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    Presentation type:Poster presentation  

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Awards

  • 中央大学学術研究奨励賞

    2023.2  

  • 日経・経済図書文化賞

    2022.11  

  • 日本管理会計学会 学会賞(文献賞)

    2022.8  

  • 日本会計研究学会 太田・黒澤賞

    2022.8  

  • 2014 International Conference on Accounting and Information Technology, Best Paper Award

    2014.2  

  • 日本管理会計学会 学会賞(奨励賞)

    2011.10  

  • 東北大学 総長賞

    2011.3  

  • 財団法人経和会記念財団 優秀論文賞

    2010.3  

  • 東北経済学会 学会賞

    2007.10  

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Research Projects

  • The effect of corporate governance on the economic consequences of real earnings management

    Grant number:21K01790  2021.4 - 2025.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)  Tohoku Gakuin University

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    Grant amount: \1560000 ( Direct Cost: \1200000 、 Indirect Cost: \360000 )

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  • 外国人投資家が会計情報の質に及ぼす影響に関する研究

    Grant number:18K01906  2018.4 - 2023.3

    日本学術振興会  科学研究費助成事業  基盤研究(C)  東北大学

    木村 史彦, 榎本 正博, 山口 朋泰

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    Grant amount: \4160000 ( Direct Cost: \3200000 、 Indirect Cost: \960000 )

    本年度においても新型コロナウイルス感染症への対応のために研究のとりまとめには至らなかったが、大株主データ収集と整備について完了し、財務データの分析に着手している。また、関連研究として純粋持株会社に係る研究を実施し、『産業経理』において公表した(タイトル「グループ・ガバナンスと利益マネジメントに関する予備的研究―純粋持株会社における利益マネジメントに注目して―」)。概要は下記のとおりである。
    コーポレートガバナンスにおけるグループ・ガバナンスが利益マネジメントに及ぼす影響に関する予備的な考察として純粋持株会社に注目し、そこでの利益マネジメントの実態の解明を試みた。純粋持株会社は、株式所有を通じて他の会社の事業活動を支配することを目的とした企業の形態であり、企業グループ全体の経理を含めた管理機能を有することが多い一方で、事業活動についてはほとんど行わない。こうした構造が経営者による会計的、実体的利益マネジメントの水準に影響を及ぼすと予想した。検証の結果、(1)純粋持株会社では非純粋持株会社(事業持株会社)と比べて、会計的利益マネジメント、とりわけ利益増加的な会計的利益マネジメントが促進されていることが見出された。純粋持株会社がグループ全体の経理機能を統括しているケースが多いことをふまえると、そのことによって、会計的利益マネジメントの水準が高まっていると解することができる。(2)実体的利益マネジメントについては、純粋持株会社では非純粋持株会社よりも高水準で実施される傾向にあることが示唆された。この知見に対しては、純粋持株会社では子会社管理がより強力に実施され、それに伴い子会社間の競争が激しくなるような状況が影響しているとの解釈を与えることができる。

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  • Empirical analyses of the relationship between securities issue and earnings management

    Grant number:16K17211  2016.4 - 2020.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)  Grant-in-Aid for Young Scientists (B)  Tohoku Gakuin University

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    Grant amount: \2600000 ( Direct Cost: \2000000 、 Indirect Cost: \600000 )

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  • International comparison for earnings management

    Grant number:15K03763  2015.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)  Tohoku University

    Kimura Fumihiko

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    Grant amount: \4030000 ( Direct Cost: \3100000 、 Indirect Cost: \930000 )

    We investigate whether a country's level of financial development is associated with influences its earnings management in an international setting. Financial development is likely to heighten the monitoring and scrutiny of accounting figures because of strengthened investor protection laws and regulations as well as sophisticated market participants. Research shows that managers tend to apply real earnings management, instead of accrual-based earnings management, under strict accounting standards, regulations, and close auditor scrutiny. Thus, we explore the alternative hypothesis that accrual-based earnings management decreases but real earnings management increases along with higher financial development. We examine the relationship between financial development and both types of earnings management using 56,830 observations in 37 countries. The results indicate that both types of earnings management are more restrained under higher levels of financial development.

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  • The Stock Market Response to Accrual-Based and Real Earnings Management

    Grant number:25780288  2013.4 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)  Grant-in-Aid for Young Scientists (B)  Tohoku Gakuin University

    Yamaguchi Tomoyasu

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    Grant amount: \2340000 ( Direct Cost: \1800000 、 Indirect Cost: \540000 )

    There are two research outcomes as follows.
    First, I examined the market response to achieving managers’ earnings forecasts through earnings management in Japanese setting. The results indicate that the rewards are not discounted for using accrual-based earnings management. Meanwhile, the results indicate that the rewards are discounted but still exist for using real earnings management.
    Second, I examined earnings management to achieve industry-average profitability using the data of Japanese firms. The results indicate that Japanese firms engage in real and accrual-based earnings management to achieve industry-average profitability. The results also indicate that firms in more competitive industries engage in greater income-increasing earnings management to achieve industry-average profitability.

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  • Empirical analyses of earnings management and forecast managementsurrounding management turnover

    Grant number:23830061  2011 - 2012

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Research Activity Start-up  Grant-in-Aid for Research Activity Start-up  Tohoku Gakuin University

    YAMAGUCHI Tomoyasu

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    Grant amount: \2080000 ( Direct Cost: \1600000 、 Indirect Cost: \480000 )

    Management turnover plays an important role in the discipline for managers, while it is known that management turnover could induce earnings management. In particular, it is said that outgoing (incoming) managers have an incentive to increase (decrease) earnings. This paper investigates earnings management surrounding management turnover.The results indicate that
    (1) outgoing managers engage in income-increasing real earnings management, but not engage in accounting earnings management
    (2) income-increasing real earnings management by outgoing managers is restrained with the manager’s shareholding
    (3) incoming managers carry out income-decreasing earnings management in the case of forced turnover, and
    (4) income-decreasing accounting earnings management by incoming managers improves the firm’s future earnings.

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  • Empirical analyses of determinants and economic consequences of real discretionary behavior

    Grant number:09J08269  2009 - 2010

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows  Grant-in-Aid for JSPS Fellows  Tohoku University

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    Grant amount: \800000 ( Direct Cost: \800000 )

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Allotted class

  • 2024   Accounting for Business Combinations   Department

  • 2024   SeminarⅠ   Department

  • 2024   SeminarⅡ   Department

  • 2024   SeminarⅢ   Department

  • 2024   SeminarⅣ   Department

  • 2024   Seminar Thesis   Department

  • 2024   Financial Accounting   Department

  • 2024   Consolidated Financial Statements   Department

  • 2024   positive accounting theory (SeminarⅠ)   Graduate school

  • 2024   positive accounting theory (SeminarⅡ)   Graduate school

  • 2024   Financial AccountingⅡ   Graduate school

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Teaching Experience

  • 国際会計論

    Institution:福島大学

  • 連結財務諸表論

    Institution:東北学院大学

  • 財務会計論

    Institution:東北学院大学

  • 財務会計論

    Institution:中央大学

  • 連結会計論

    Institution:中央大学

  • 企業結合会計論

    Institution:中央大学

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Committee Memberships

  • 2024.10 - Now

    日本会計研究学会   『会計プログレス』編集委員  

Social Activities

  • 税務大学校仙台研修所 講師(通信研修「会計学」)

    Role(s): Lecturer

    2016.9 - 2016.10

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  • 税務大学校仙台研修所 講師(通信研修「会計学」)

    Role(s): Lecturer

    2015.9 - 2015.10

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