- 2014/06 - 2015/05 電子情報通信学会 ソサイエティ論文誌編集査読委員 投稿論文査読
- 2014/02 - 2015/05 情報処理学会 論文誌「娯楽の離散数理」特集号編集委員
- 2013/09 - 2014/07 Thirteenth IEEE International Workshop on Assurance in Distributed Systems and Networks(ASDN 2014) Program commitee
- 2011/10 - 2014/06 IEEE International Workshop on Assurance in Distributed Systems(ASDN2012)(ASDN2013) Program Committee
- 2011/10 - 2014/06 IEEE International Workshop on Assurance in Distributed Systems(ASDN2012)(ASDN2013)(ASDN2014) Program Committee
- 2003/10 - 2013/10 IADIS International Conference on Applied Computing(AC2004)(AC2005)(AC2006)(AC2008)(AC2009)(AC2010)(AC2011)(AC2012)(AC2013) Program Committee
- 2003/10 - 2013/10 IADIS International Conference on Applied Computing(AC2004)(AC2005)(AC2006)(AC2008)(AC2009)(AC2010)(AC2011)(AC2012)(AC2013) Program Committee
- 2009/07 - 2013/09 公益財団法人 稲盛財団 京都賞推薦委員
- 2012/12 - 2013/08 International Symposium on Security in Computing and Communications (SSCC'13)Program Committee
- 2012/12 - 2013/08 International Symposium on Security in Computing and Communications (SSCC'13)Program Committee
- 2007/03 - 2013/07 IEEE/ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing(SNPD2007)(SNPD2008)(SNPD2009)(SNPD2012)(SNPD2013) Program Committee
- 2007/03 - 2013/07 IEEE/ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing(SNPD2007)(SNPD2008)(SNPD2009)(SNPD2012)(SNPD2013) Program Committee
- 2007/03 - 2013/06 IEEE/ACIS International Conference on Computer and Information Science(ICIS2008)(ICIS2009)(ICIS2010)(ICIS2011)(ICIS2012)(ICIS2013) Program Committee
- 2007/03 - 2013/06 IEEE/ACIS International Conference on Computer and Information Science(ICIS2008)(ICIS2009)(ICIS2010)(ICIS2011)(ICIS2012)(ICIS2013) Program Committee
- 2012/03 - 2013/05 情報処理学会 論文誌「パズルの数理」特集号編集委員
- 2012/03 - 2012/05 International Conference on Systems and Informatics (ICSAI 2012) Program Committee
- 2012/03 - 2012/05 International Conference on Systems and Informatics (ICSAI 2012) Program Committee
- 2009/05 - 2012/05 IEEE International Conference on Information Science and Applications (ICISA2010)(ICISA2011)(ICISA2012) Program Committee
- 2009/05 - 2012/05 IEEE International Conference on Information Science and Applications (ICISA2010)(ICISA2011)(ICISA2012) Program Committee
- 2009/09 - 2012/04 ACIS International Conference on Software Engineering Research, Management and Applications (SERA2009)(SERA2010)(SERA2011)(SERA2012) Program Committee
- 2009/09 - 2012/04 ACIS International Conference on Software Engineering Research, Management and Applications (SERA2009)(SERA2010)(SERA2011)(SERA2012) Program Committee
- 2008/04 - 2012/04 日本応用数理学会 理事
- 2011/09 - 2011/12 ACIS International Symposium on Software and Network Engineering(SSNE2011) Program Committee
- 2011/09 - 2011/12 ACIS International Symposium on Software and Network Engineering(SSNE2011) Program Committee
- 2011/06 - 2011/12 International Conference on IT Convergence and Security(ICITCS2011) Program Committee
- 2011/06 - 2011/12 International Conference on IT Convergence and Security(ICITCS2011) Program Committee
- 2007/04 - 2011/09 大阪大学大学院情報科学研究科「アンビエント情報社会基盤創成拠点」アドバイザリ委員
- 2010/04 - 2011/04 日本応用数理学会 副会長
- 2009/04 - 2011/02 IFIP International Conference on New Technologies, Mobility and Security(NTMS2009)(NTMS2010)(NTMS2011) Program Committee
- 2009/04 - 2011/02 IFIP International Conference on New Technologies, Mobility and Security(NTMS2009)(NTMS2010)(NTMS2011) Program Committee
- 2008/05 - 2010/09 日本応用数理学会 年会実行委員
- 2009/01 - 2009/07 International Conference on Security and Privacy(SECRIPT 2009) Program Committee
- 2009/01 - 2009/07 International Conference on Security and Privacy(SECRIPT 2009) Program Committee
- 2008/10 - 2009/04 Spring School and French-Japanese collaboration workshop on Computational and Symbolic Proofs of Security(CosyProofs 2009) Organizing Committee
- 2008/10 - 2009/04 Spring School and French-Japanese collaboration workshop on Computational and Symbolic Proofs of Security(CosyProofs 2009) Organizing Committee
- 2007/03 - 2007/12 Asia Pacific International Symposium on Information Technology(APIS2007) Advisory Committee
- 2007/03 - 2007/12 Asia Pacific International Symposium on Information Technology(APIS2007) Advisory Committee
- 2004/12 - 2006/11 OSDL Japan Data Center Linux-Japan テクニカルリーダ
- 2004/12 - 2006/11 OSDL Japan Data Center Linux-Japan technical Leader
- 2004/10 - 電子情報通信学会 和文論文誌D-1「ユビキタス社会構築のためのネットワークに対する理論とその応用」小特集号編集委員
- 2003/11 - 2004/03 International Conference on Distributing Computing Systems(ICDCS) Program Committee
- 2003/11 - 2004/03 International Conference on Distributing Computing Systems(ICDCS) Program Committee
- 2002/12 - 2003/12 IEEE Kansai Section Membership Development Committee
- 2002/12 - 2003/12 IEEE Kansai Section Membership Development Committee
- 2002/04 - 2003/05 電子情報通信学会 英文論文誌「離散数学とその応用」特集号編集委員
- 2001/05 - 2003/05 情報処理学会 関西支部幹事
- 1997/05 - 2003/05 情報処理学会 論文誌査読委員
- 1997/05 - 2003/04 電子情報通信学会 コンピュテーション研究会研究専門委員
- 2002/04 - 2002/12 Asia Pacific International Symposium on Internet and Multimedia(APIS2) Advisory Committee
- 2002/04 - 2002/12 Asia Pacific International Symposium on Internet and Multimedia(APIS2) Advisory Committee
- 1996/05 - 2000/05 情報処理学会 論文誌編集委員
- 1999/04 - 2000/03 神奈川県厚木市 長谷連合自治会NTT長谷自治会長
- 1997/04 - 2000/03 日本応用数理学会 学会誌編集委員
- 1999/02 - 1999/08 電子情報通信学会 ニュース委員会委員
- 1994/05 - 1997/05 情報処理学会 アルゴリズム研究会連絡委員
- 1992/04 - 1996/09 電子情報通信学会 回路とシステム軽井沢ワークショップ実行委員
- 1993/05 - 1995/05 情報処理学会 学会誌編集委員
- 1994/01 - 1994/12 International Conference on Parallel and Distributed Systems(ICPADS) Program Committee
- 1994/01 - 1994/12 International Conference on Parallel and Distributed Systems(ICPADS) Program Committee
- 1989/10 - 電子情報通信学会 論文誌査読委員
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