Updated on 2021/06/13

写真b

 
MURAKAMI Yuko
 
*Items subject to periodic update by Rikkyo University (The rest are reprinted from information registered on researchmap.)
Affiliation*
Graduate School of Artificial Intelligence and Science Artificial Intelligence and Science
College of Arts Department of Education
Title*
Professor
Degree
Ph.D. ( 3 2005   Indiana University )
Research Theme*
  • ICTが人間の社会や人間性そのものに及ぼす影響について考察する。既存事例のケーススタディと、まだ発生していないが理論的には起こる可能性がある事案の予測を行う。また、将来の状況をよりよいものにするための提案を行う。さらに価値観にかかる演繹的自動推論の改善および機械学習との融合を検討する。【略歴】東京大学卒業後、フルブライト奨学生として哲学・論理学を学び、Ph.D(philosophy,IndianaU)取得。国立情報学研究所、東北大学を経て現職。エージェント・行為概念の論理的挙動を演繹的に記述するプロジェクトを中心に、演繹的推論と帰納的推論の融合に取り組んでいる。

  • Research Interests
  • history of philosophy in the twentieth century

  • information ethics

  • philosophy of artificial intelligence

  • Philosophy of Information

  • Campus Career*
    • 4 2020 - Present 
      Graduate School of Artificial Intelligence and Science   Artificial Intelligence and Science   Professor
    • 4 2020 - Present 
      College of Arts   Department of Education   Professor
    • 4 2018 - 3 2020 
      College of Science   Department of Mathematics   Specially Appointed Professor
     

    Research Areas

    • Informatics / Theory of informatics

    • Humanities & Social Sciences / Sociology of science, history of science and technology

    • Humanities & Social Sciences / Philosophy and ethics

    Research History

    • 4 2020 - Present 
      RIKKYO UNIVERSITY   College of Arts Department of Education   Professor

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    • 4 2020 - Present 
      RIKKYO UNIVERSITY   Graduate School of Artificial Intelligence and Science Artificial Intelligence and Science   Professor

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    • 4 2018 - 3 2020 
      RIKKYO UNIVERSITY   College of Science Department of Mathematics   Specially Appointed Professor

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    • 4 2008 - 3 2018 
      Tohoku University

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    • 3 2006 - 3 2008 
      National Institute of Informatics

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    Committee Memberships

    • 6 2021 - Present 
      応用哲学会   理事

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      Committee type:Academic society

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    • 4 2016 - Present 
      日本科学哲学会   理事

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      Committee type:Academic society

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    • 5 2009 - Present 
      科学基礎論学会   理事

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      Committee type:Academic society

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    • 4 2016 - 3 2021 
      日本哲学会   理事

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      Committee type:Academic society

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    Awards

    • 9 2019  
      International Conference of the European Academy of Management and Business Economics (AEDEM)  XXVIII AEDEM Best paper award 
       
      Yuko Murakami

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      Award type:Award from international society, conference, symposium, etc.  Country:Japan

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    • 8 2017  
      情報処理学会  情報処理学会情報教育シンポジウム2017優秀発表賞 
       
      上出吉則, 辰己丈夫, 村上祐子

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      Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

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    • 7 2016  
      情報処理学会  情報処理学会第 135 回コンピュータと教育研究発表会学生セッション 信州大学 奨励賞 
       
      沼崎拓也, 中谷多哉子, 村上祐子, 辰己丈夫

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      Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

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    • 8 2015  
      情報処理学会  優秀発表賞・山下記念研究賞 
       
      辰己 丈夫, 村上 祐子, 大谷 卓史

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      Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

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    Papers

    • Trends in Ethics of Artificial Intelligence:Significance of Philosophy of Technology in Research and Development

      MURAKAMI Yuko

      IEICE ESS Fundamentals Review11 ( 3 ) 155 - 163   2018

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      Language:Japanese   Publisher:The Institute of Electronics, Information and Communication Engineers  

      In this survey, the guidelines and ethical issues of research communities of artificial intelligence are summarized. A short list of background theories of ethics and philosophy follows.

      DOI: 10.1587/essfr.11.3_155

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    • Ethics of Information Education for Living with Robots Peer-reviewed

      Yuko Murakami, Takeo Tatsumi, Takushi Otani, Yasunari Harada

      VOL 1 NO 1 (2017): THE ORBIT JOURNAL - AN ONLINE JOURNAL FOR RESPONSIBLE RESEARCH AND INNOVATION IN ICT1 ( 1 )   1 9 2017

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

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    • Philosophy and Higher Education in Japan Peer-reviewed

      Yuko MURAKAMI

      Tetsugaku: International Journal1   184 - 196   1 4 2017

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:日本哲学会  

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    • Interactions between AI and culture Invited Peer-reviewed

      Yuko MURAKAMI

      Proceedings of World Humanities Forum 2016   447 - 457   10 2016

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      Language:English   Publishing type:Research paper (international conference proceedings)  

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    • A Role of information studies for future AI and Robotics era.

        ( 2016 ) 15 - 22   15 8 2016

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      Language:Japanese  

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    • The Era of Personalized Learning via Application is Coming!:4. ICT in Education from a Parent's Eye

        57 ( 9 ) 898 - 903   15 8 2016

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    • The Information Ethics Education in our Future

        ( 2015 ) 45 - 52   10 8 2015

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      Language:Japanese  

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    • シンギュラリティを巡る哲学的逡巡 Invited Peer-reviewed

      村上 祐子

      情報処理56 ( 1 ) 34 - 35   15 12 2014

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      Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:情報処理学会  

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    • Is Applied Philosophy to be Learnt? (Book review: Oyo-tetsugaku wo manabu hito no tame ni (A study guide to applied philosophy), Korega Oyo-tetugaku da !

      Murakami Yuko

      Kagaku tetsugaku46 ( 1 ) 69 - 76   2012

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      Language:English   Publisher:The Philosophy of Science Society, Japan  

      DOI: 10.4216/jpssj.46.69

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      Other Link: http://hdl.handle.net/10097/56419

    • 哲学者たちの反省 Peer-reviewed

      MURAKAMI, Yuko

      Journal of Information Processing and Management55 ( 7 )   2012

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      Publishing type:Research paper (scientific journal)   Publisher:Japan Science and Technology Agency  

      DOI: 10.1241/johokanri.55.532

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    • Opinion

      Murakami Yuko

      Kagaku tetsugaku43 ( 1 ) 91 - 97   2010

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      Language:English   Publisher:The Philosophy of Science Society, Japan  

          This proposal for Philosophy of Science Society Japan and its members presents recommendations toward improvement of logic education, outline of logic curriculum to be shared among community, and requisite components of logical skills and knowledge for philosophers of each field. It also provides information on the past workshops on logic education by PSSJ as well as a summary of ASL guideline and ASL inquiry on logic education (1995).

      DOI: 10.4216/jpssj.43.1_91

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      Other Link: http://hdl.handle.net/10097/52572

    • Institutional repositories in Japan Peer-reviewed

      Yuko Murakami, Jun Adachi

      DIGITAL LIBRARIES: ACHIEVEMENTS, CHALLENGES AND OPPORTUNITIES, PROCEEDINGS4312   540 - +   2006

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      Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:SPRINGER-VERLAG BERLIN  

      This report describes the growth of institutional repositories in Japan and NII's support projects since 2004. The characteristic features of the process were: (1) the diversity of the partner universities (2) the collaboration between universities and NII, and (3) the fast localization and installation with limited budget.

      DOI: 10.1007/11931584_71

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    • Modal Logics of Partitions

      Yuko MURAKAMI

          31 3 2005

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      Language:English   Publishing type:Doctoral thesis  

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    • Utilitarian Deontic Logic. Peer-reviewed

      Yuko Murakami

      Advances in Modal Logic5 ( 5 ) 211 - 230   2004

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      Language:English   Publishing type:Research paper (international conference proceedings)  

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    • Diagrammatic reasoning with numeral operations Peer-reviewed

      Yuko MURAKAMI

      ESSLLI'97 Student Session Proceedings   8 1998

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      Language:English   Publishing type:Research paper (international conference proceedings)  

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    Misc.

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    Books and Other Publications

    • スマリヤン不完全性定理

      Smullyan, Raymond M., 高橋, 昌一郎, 川辺, 治之, 村上, 祐子

      丸善出版  12 2019  ( ISBN:9784621304785

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      Total pages:ix, 178p   Language:Japanese

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    • 哲学者に会いにゆこう = Take a walk to see philosophers

      田中, さをり, 永井, 均, 木村, 敏, 風間, コレヒコ, 前邑, 恭之介, 中川, 雅道, 俵, 邦昭, 鬼頭, 秀一, 村上, 祐子

      ナカニシヤ出版  2016  ( ISBN:9784779509926

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      Total pages:2冊   Language:Japanese

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    • 現代哲学キーワード

      村上 祐子( Role: Contributor)

      有斐閣  2016 

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      Language:Japanese Book type:Scholarly book

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    • 人文社会科学のための研究倫理ガイドブック

      村上 祐子( Role: Contributor)

      慶應義塾大学出版会  10 2015 

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      Language:Japanese Book type:Scholarly book

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    • エニグマ : アラン・チューリング伝

      Hodges, Andrew, 土屋, 俊, 土屋, 希和子, 村上, 祐子

      勁草書房  2015  ( ISBN:9784326750535

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      Total pages:2冊   Language:Japanese

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    • スマリヤン数理論理学 : 述語論理と完全性定理

      Smullyan, Raymond M., 村上, 祐子, 高橋, 昌一郎

      丸善出版  11 2014  ( ISBN:9784621087855

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      Total pages:iv, 196p   Language:Japanese

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    • 情報倫理入門

      大谷, 卓史, 江口, 聡, 土屋, 俊, 喜多, 千草, 永崎, 研宣, 村上, 祐子, 川口, 嘉奈子, 坪井, 雅史, 谷川, 卓, 吉永, 敦征, 川口, 由起子( Role: Joint author)

      アイ・ケイコーポレーション  9 2014  ( ISBN:9784874923245

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      Total pages:xiv, 242p   Language:Japanese Book type:Scholarly book

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    • International Handbook of Research in History, Philosophy and Science Teaching

      Yuko Murakami, Manabu Sumida( Role: Contributor)

      Springer  2014 

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      Language:English Book type:Scholarly book

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    • 科学技術をよく考える

      伊勢田哲治, 戸田山和久, 調麻佐志, 村上祐子( Role: Joint editor)

      名古屋大学出版会  4 2013 

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      Language:Japanese Book type:Scholarly book

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    • 言語・思考の哲学

      村上 祐子( Role: Contributor)

      岩波書店  2 2009 

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      Language:Japanese Book type:Scholarly book

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    • 学術情報流通と大学図書館

      日本図書館情報学会研究委員会, 土屋, 俊, 小野寺, 夏生, 倉田, 敬子, 芳鐘, 冬樹, 村上, 祐子, 尾城, 孝一, 安達, 淳, 鈴木, 尊紘, 和田, 光俊, 内島, 秀樹, 牛崎, 進, 加藤, 信哉, 塚田, 吉彦( Role: Contributor)

      勉誠出版  10 2007  ( ISBN:9784585002901

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      Total pages:x, 217p   Language:Japanese Book type:Scholarly book

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    • ロジカル・ディレンマ : ゲーデルの生涯と不完全性定理

      Dawson, John W. (John William), 村上, 祐子, 塩谷, 賢

      新曜社  12 2006  ( ISBN:4788510286

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      Total pages:438p   Language:Japanese

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    • 理性はどうしたって綱渡りです

      Fogelin, Robert J., 野矢, 茂樹, 塩谷, 賢, 村上, 祐子

      春秋社  8 2005  ( ISBN:439332305X

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      Total pages:iii, 250, 8p   Language:Japanese

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    Presentations

    • Externalism of mind: integrated system of human and machine Invited

      Yuko Murakami

      The 9th RIEC International Symposium on Brain Functions and Brain Computer  5 12 2020 

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      Language:English  

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    • Choice, Agency, and Dignity in the Age of Artificial Intelligence

      Yuko Murakami

      ECIAIR 2019  1 11 2019 

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      Language:English   Presentation type:Oral presentation (general)  

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    • Moral Evaluation over Extended Notion of Agency

      9 2019 

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      Language:English   Presentation type:Oral presentation (general)  

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    • Women Philosophers in Japan Invited

      Yuko Murakami

      Libori Summer School 2019, Paderborn University  30 7 2019 

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      Event date: 29 7 2019 - 2 8 2019

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

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    Professional Memberships

    Research Projects

    • 日本の尊厳概念史・影響作用史の構築に関する総合的研究--欧米との比較を踏まえて

      日本学術振興会  科学研究費助成事業 

      加藤泰史

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      4 2018 - Present

      Grant type:Competitive

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    • 哲学分野における男女共同参画と若手研究者育成に関する理論・実践的研究

      日本学術振興会  科学研究費助成事業 

      和泉ちえ

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      4 2016 - Present

      Grant type:Competitive

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    • ポストトゥルースの時代における新しい情報リテラシーの学際的探求 研究課題

      日本学術振興会  科学研究費助成事業 

      久木田水生

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      4 2019 - 3 2023

      Grant type:Competitive

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    • 尊厳概念のグローバルスタンダードの構築に向けた理論的・概念史的・比較文化論的研究

      日本学術振興会  科学研究費助成事業 

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      4 2018 - 3 2023

      Grant type:Competitive

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    • The Concept of Dignity: An East-West comparative analysis from philosophical, social, cultural, and juridical perspectives

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

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      4 2018 - 3 2019

      Grant number:18H03567

      Grant amount:\43290000 ( Direct Cost: \33300000 、 Indirect Cost:\9990000 )

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    • Updating the concept of morality based on science

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

      Kukita Minao, Nakamura Michio, Miwa Kazuhisa, Hattori Hiromitsu, Osawa Hirotaka, Kawaguchi Jun, Hira Riichiro

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      4 2016 - 3 2019

      Grant number:16H03341

      Grant type:Competitive

      Grant amount:\10790000 ( Direct Cost: \8300000 、 Indirect Cost:\2490000 )

      In this research, we clarified the gap between the findings regarding "morality" obtained in various fields of natural science and the views that have traditionally been accepted in philosophy and ethics. Specifically, in philosophy and ethics, the mainstream view emphasizes individual autonomy and reason, but science has revealed that the emotional and physical factors, as well as social and environmental factors, also play important roles, and that these factors and rational factors are intricately intertwined to enable moral judgments. Based on this, we found a difficulty in the very framing of the problem as "making machines ethical" in the research field called "machine ethics," in which they attempt to make artificial intelligent systems and robots that are capable of moral judgments and/or moral actions.

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    • Singularity and logic of responsibility

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

      Murakami Yuko, OTANI Takushi

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      4 2015 - 3 2018

      Grant number:15K01978

      Authorship:Principal investigator  Grant type:Competitive

      Grant amount:\4810000 ( Direct Cost: \3700000 、 Indirect Cost:\1110000 )

      "The singularity argument," or the alleged claim that AI will annihilate human beings, was viral at the moment of the project proposal, although it has little evidence via immature argument. We pointed out the gaps and also necessities of revising the fundamental notions of personality, humanity, and responsibility. Our claims are getting vindicated via proposals by German government and EU congress toward considering e-personality.
      Logical investigations are still on the way and we wish to develop the theory more deeply in the future.
      We also focus on much details of academic usage of AI in research and K-12 education. In academic research substitution of human beings with AI will rather help advanced research by human. In K-12, more detailed analysis of contents of moral dilemmas should be arranged for each cluster of learners. We hope to classify cases of moral dilemmas for educational levels in the future.

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    • The Limit of Privacy and Right to Autonomy: A Study from the information ethics and the history

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

      Otani Takushi, MURAKAMI I. Yuko, KAWAGUCHI Yukiko, KAWAGUCHI Kanako, NAGASAKI Kiyonori, TSUBOI Masashi, YOSHINAGA Nobuyuki, HAGA Takahiro

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      4 2014 - 3 2018

      Grant number:26370040

      Grant amount:\4940000 ( Direct Cost: \3800000 、 Indirect Cost:\1140000 )

      1) We marshaled basic information ethics material related to the problems of privacy and autonomy, and updated the information ethics textbook we previously published for university students to reflect recent social and technological developments. 2) We summarized the history of information ethics. 3) We overviewed theories on privacy and autonomy in ethics and philosophy. Using these works as our basis, we considered the latest problems, such as 4) the possibility of the manipulation of public opinion by social media and 5) the influence of search engine algorithms, which arrange search results, to the users' decisions. 6) The principal researcher published a book entitled _Information Ethics: Technology, Privacy, and Copyright_ as part of this project's research results, and received an honorable mention in the Telecom Social Sciences Award from the Telecommunications Advancement Foundation, Japan.

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    • 大学教育改善の促進と教育イノベーション普及のための「大学教育コモンズ」の構築

      日本学術振興会  科学研究費助成事業 

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      4 2013 - 3 2017

      Grant type:Competitive

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    • Carrier path of science communicator in academic organization: actual and potential situation

      Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research 

      KURI Miwa, MURAKAMI Yuko

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      4 2012 - 3 2014

      Grant number:24650512

      Grant type:Competitive

      Grant amount:\3900000 ( Direct Cost: \3000000 、 Indirect Cost:\900000 )

      In the first year, we show the importance of the remuneration system on the establishment for carrier path of science communicator directly and indirectly employed by the research found around academic institute including university through interviews for the employment type, the consciousness and so on.
      In the second year, as well as focus on the actual situation of the compensation structure of the relevant business person in terms of research management, opinions were also extracted information about the concepts underlying the compensation structure.

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    • 哲学のための中上級論理学推進

      日本学術振興会  科学研究費助成事業 

      村上祐子

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      4 2011 - 3 2014

      Authorship:Principal investigator  Grant type:Competitive

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    • A Study on the Ambiguity and the Context Dependency of Privacy Through the Historical and the Logical Perspective

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

      OTANI Takushi, MURAKAMI Yuko, KAWAGUCHI Yukiko

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      2011 - 2013

      Grant number:23520048

      Grant amount:\4680000 ( Direct Cost: \3600000 、 Indirect Cost:\1080000 )

      First, we found that there had been conceptions of privacy in Japan before the first trial concerning privacy invasion in the 1960s by philosophical and historical studies, and described the logical form of information flow norms with respect to privacy in the framework of the situational logic. Second, The research representative studied and translated one of the newest books on jurisprudential theory on the ambiguity and context-dependency of privacy, based on the work above. Thirdly, the representative determined that harm that stems from invasions of privacy derived from an absence of moral autonomy and a lack of freedom of self-representation by studying the work of information ethicist van den Hoven and that of sociologist Goffman . Furthermore, the representative organized a study group on information ethics in Japan, and edited a college textbook on information ethics that was written by that group's members.

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    • 科学技術社会論と融合したクリティカルシンキングの研究および教育手法開発

      日本学術振興会  科学研究費助成事業 

      伊勢田哲司

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      4 2009 - 3 2012

      Grant type:Competitive

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    • 討議倫理のモデル構築

      日本学術振興会  科学研究費助成事業 

      野家啓一

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      4 2009 - 3 2012

      Grant type:Competitive

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    • Construction of a model for discursive ethics in techno-science

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

      NOE Keiichi, ZAKOTA Yutaka, NAOE Kiyotaka, TOSHIMA Kiyoshi, OGIHARA Satoshi, HASEGAWA Koichi, HARA Saku, KITAMURA Masaharu, MURAKAMI Yuko, KOBAYASHI Tadashi, YAGI Eko, HIGURASHI Masao, YAMAMOTO Hiraku

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      2009 - 2011

      Grant number:21320002

      Grant amount:\15990000 ( Direct Cost: \12300000 、 Indirect Cost:\3690000 )

      We created a new model for science communication based on discursive ethics. For this purpose we organized a few occasions for the discussion of how to manage nuclear waste and analyzed the way the discussion went. We learnt the followings:
      1. It is unlikely that people with opposing views come to total agreement through discussion. Nonetheless, it is important for us to continue dialogue and try to reach a reasonable agreement.
      2. A dialogue between experts committed to different positions can be valuable especially when general citizens watch it and are informed and educated so as to form or revise their views.
      3. For a dialogue to be fruitful, there has to be mutual trust among participants, and they have to have certain empathic capacities among other things.
      4. A moderator of a dialogue has to be fair, but fairness is different from mere formal neutrality. To be fair one has to be able to make sorts of value judgments properly.

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    • Research and deve lopment of educational meth d in cr itical thinking blended with science, technology and society(STS)

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

      ISEDA Tetsuji, SHIRABE Masashi, TODAYAMA Kazuhisa, MURAKAMI Yuko, AOKI Shigeyuki, KUBODA Yuka, KUSUMI Takashi, KIKUCHI Satoru, DEGUCHI Yasuo, MIURA Tosihiko, MOTOYOSI Tadahiro, YOSIMITSU Akihiro

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      2009 - 2011

      Grant number:21300323

      Grant amount:\8450000 ( Direct Cost: \6500000 、 Indirect Cost:\1950000 )

      The first important result of this research project is the re-examination and theoretical expansion of both critical thinking and science, technology and society(STS). Critical thinking as an abstract thinking skill is substantiated using STS themes, and the notion of meta-critical thinking(meta CT) was introduced to locate bilateral communication and pseudoscience issues in the context of critical thinking. On the side of STS, in the discussion of how to incorporate critical thinking into STS, a thinking process was proposed to relativize two models of communication(deficit vs. bilateral communication) and to utilize them in proper contexts.
      The other important research result is the creation of a educational format, i. e. critical thinking blended with STS(CT-STS), which has a balanced treatment of both abstract and concrete aspects of the two fields. The format is that opposing viewpoints are juxtaposed as thinking material, and skills and knowledge relevant to the interpretation of the opposition are provided alongside. The blending is not just a matter of efficiency in education. What this research presented is a way to present a unified perspective on seemingly unrelated(or even conflicting) styles of thinking ; as a result, the proposed educational material include something totally new, that is, educational material that encourage to reflect on desirability of critical thinking itself.

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    • 非正規様相論理の理論と応用

      科学研究費助成事業 

      村上祐子

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      4 2000 - 3 2003

      Grant type:Competitive

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    • 非正規様相論理の理論と応用

      日本学術振興会  科学研究費助成事業 特別研究員奨励費 

      村上 祐子

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      2000 - 2002

      Grant number:00J06372

      Grant amount:\3600000 ( Direct Cost: \3600000 )

      平成14年度は、前年度に引き続いて非正規様相論理の理論を展開するとともに、特に哲学理論への応用に関する方法論的検討を中心に研究を進めた結果を学会・ワークショップにて発表した。
      2002年6月には「様相は必然性ではない」(科学基礎論学会、東京工業大学)で、人工知能などさまざまな分野への様相論理の応用が進展する一方で、哲学的限界の打開という問題に対してはいまだに試行錯誤が続いている状況への対策として、ともすれば狭義に捉えられ必然性と同一視されることすらある様相概念をより広い文脈で捉えなおす必要があることを論じた。
      2002年11月には"Non-monotonic modalities : philosophical motivations and applications"と題する講演(京都科学哲学コロキアム、京大会館)を行い、哲学的論理学という学問分野全体における様相論理の理論と応用の位置づけに関する方法論的考察を示した。
      さらに、2003年2月には講演"Beyond bare monotonicity"(言語・行為・認知ワークショップ、北海道大学)を行い、特に言語行為にまつわる概念を様相論理を用いた哲学的論理学のアプローチで処理した場合のパラドクス現象に注目することにより、非正規様相論理に焦点を当てた場合においても応用の目的にあわせて適切な意味論と論理体系を提示することの重要性を強調した。
      また、2003年3月の講演「様相アプローチ検討」(名古屋哲学フォーラム、南山大学)では、それまでの研究で明らかになった問題を解決するために「言語行為では最大情報をもたらさなければならない」(最大情報性仮説)を提案するとともに、最大情報性を様相論理の枠組で把握するための予備的考察として階層化された可能世界を認めるべきであるという「分割主義」の考え方を新たに提示した。
      また理論的背景となる「様相論理」「不完全性定理」「自己言及」について、『AI事典』(土屋俊他編、共立出版)項目として執筆し、人工知能の基礎研究としての論理学の応用可能性について論じた。

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