国際学会活動 等

• CGGM'2009 program committee
• Pacific Graphics 2009, Program Committee member, October 7-9, 2009, Jeju, Korea.
• Shape Modelling International 2009 (SMI'09), Program Committee member, June 26-29, 2009, Tsinghua University, China.
• Eighth International Workshop on　Computer Graphics and Geometric Modeling CGGM'2009, Program Committee member, Baton Rouge, Louisiana - U.S.A. May 25-27, 2009
• IMA Mathematics of Surfaces XIII conference, Program Committee member of 2008-2009
• Program Committee member of 2009 SIAM/ACM Joint Conference on Geometric and Physical Modeling
• Shape Modelling International 2008 (SMI'08), Program Committee member,June 4-6, 2008, in Stony Brook University, Stony Brook, New York, USA.
• 12th ACM Symposium on Solid and Physical Modeling 2008 (SPM 08), Program Co-chair, in Stony Brook University, Stony Brook, New York, USA
• 10th International Conference on CAD/Graphics (CAD/Graphics 2007), International Program Committee member, Beijing, China, Oct 15-18, 2007.
• 41st CIRP Conference on Manufacturing Systems, May 26 - 28, Tokyo, Japan, a member of local organizaing committee, 2007.
• Pacific Graphics 2007 (PG'07), International Program Committee (IPC), Maui, Hawaii, October 29th/30th and November 1st/2nd.
• Sixth International Workshop on Computer Graphics and Geometric Modeling (CGGM 2007), Program Committee member, Beijing, China, May 27-30 2007
• Shape Modelling International 2007 (SMI'07), Program Committee member, June 13-15, Lyon, France
• 11th ACM Symposium on Solid and Physical Modeling 2007 (SPM 07), Program Committee member, Beijin, June 4-6, 2007.
• Pacific Graphics 2006, 11-13 October 2006 in Taipei, Taiwan, IPC member (2006)
• International symposium on Product Lifecycle Management, 10-12, July, 2006, Bangalore, India, IPC member (2006)
• GMP 2006, Geometric Modeling & Processing, July 26-28, 2006, Pittsburgh, Pennsylvania, U.S.A., Steering Committee member and Program Committee member. (2005-2006)
• Shape Modelling International 2006 (SMI'06), Program Co-Chair, 14-16, June, 2006, Matsushima, Japan.
• ICPE, 2006. Int. Conf. Precision Engineering, Secretary of Excutive Committee (2005-2006)
• Third International Workshop on Computer Graphics and Geometric　Modeling, CGGM'2004, held in Krakow (Poland), June 6-9 2004, IPC (International Program Committee) member (2004)
• Shape Modelling International 2005 (SMI'05), Program Committee member, June 15 to 17 2005, MIT in Cambridge, Massachusetts, USA
• Tenth ACM Symposium on Solid and Physical Modeling, Program Committee member, June 13-15, 2005, MIT in Cambridge, Massachusetts, USA
• CAD'05, the 2005 International CAD Conference and Exhibition, Board member, Bangkok, Thailand, June 20-24, 2005
• JSME DEWS 2005, Digital Engineering Worskhop, Program Co-Chair, Feb. 22-25, 2005, Tokyo, Japan.
• CGGM'2004, International Workshop on Computer Graphics and Geometric Modeling CGGM'2004
  Krakow, Poland, June 7-9, 2004, International Program Committee. (2003年)
• GMP 2004, Geometric Modeling and Processing 2004, (Theory and Applications) , Beijing, China, International Program Committee member, (2003年）
• SMI 2004, International Conference on Shape Modeling and Applications 2004, Palazzo Ducale, Genova, Italy, 7-9 June 2004, International Program Committee member (2003年)
• WSCG, The 11-th International Conference in Central Europe on Computer Graphics, Visualization and Digital Interactive Media 2003, February, 2003, International Program Committee (2002年)
• GMP 2002, Geometric Modeling and Processing 2002, (Theory and Applications) , Wako, Japan, Program Co-Chair, (2002年）
• Pacific Graphics 2001 (PG 2001), Tokyo, Japan, sponsored by IPSJ, Program Co-chair (2001年)
• 27th Design Automation Conference, 2001 ASME Design Engineering Technical Conferences, Pittsburgh, Pennsylvania, U.S.A. September 9-12, 2001, Co-organizer of Special Session "Mesh-Based Geometric Data Processing" with Prof. Kenji Shimada (2001年)
• WSCG, The 10-th International Conference in Central Europe on Computer Graphics, Visualization and Digital Interactive Media 2002, February, 2002, International Program Committee (2001年)
• IEEE Pacific Graphics 2000 (PG 2000), Hong Kong, Oct. 3-5, 2000, Program Committee. (2000年)
• WSCG, The 9-th International Conference in Central Europe on Computer Graphics, Visualization and Digital Interactive Media 2001, February, 2001, International Program Committee (2000年)
• IFIP WG 5.2 Workshop Series on "Knowledge Intensive CAD" (Fourth Workshop KIC-4), May 22-24, 2000, University of Parma, Parma, Italy, Program Committee (2000年)
• WSCG, The 8-th International Conference in Central Europe on Computer Graphics, Visualization and Digital Interactive Media 2000, February 7-11., 2000, International Program Committee (1999年)
• GMP 2000, Geometric Modeling and Processing 2000, (Theory and Applications) Hong Kong, April 10-12, Program Committee, (2000年)
• IFIP WG 5.2 Third Workshop on "Knowledge Intensive CAD", The University of Tokyo, Dec. 1-4, 1998, Program Committee (1998年)
• IEEE EHS Committee, インバースマニュファクチュアリングフォーラム， EcoDesign '99 国際会議実行委員 (1997年4月〜1999年2月)
• 4th ICPE (Int. Conference on Produciton Engineering)， プログラム委員および実行委員 (1996年4月〜)
• (財)国際ロボット・FA技術センター生産環境研究所、 委託事業「インバースマニュファクチュアリングに関する調査研究」、 DFCワーキンググループ委員 (1995年10月〜1996年3月)
• IFIP WG 5.8 委員 (1996年〜2008年)
• CIRP WS on Computer Aided Tolerancing 実行委員，(1994年〜1995年)
• 国際情報処理連合(IFIP)ワーキンググループ5.3, PLORAMAT'92国際会議 実行委員，(1990年〜1992年)
• 第3回産業へのコンピュータ応用国際会議(CAPE'89) 実行委員，(1986年〜1989年)
• 国際情報処理連合(IFIP)ワーキンググループ5.3, ファクトリーオートメーション関するワーキングコンファレン ス実行委員，(1986年〜1987年)
• 国際情報処理連合(IFIP)ワーキンググループ5.2, 知的CADに関するワークショップ組織委員およびプログラム委員，(1986年〜1989年)