#### 海外渡航（整理中）
2013
- March 14-25, 2013 : Centrifuge tests for making graound using new sand hopper, Columbia University, NY, USA (with M1園田, B4小野 March 7- April 3, 2013 )
2012
- September 20-24, 2012 : The 4th Conference of Central Asia Geotechnica, Samarkand, Uzbekistanl
- September 15-18, 2012 : The 5th Euro-Geosynthetics Congress, Valencia, Spain
- June 17-23, 2012 : The 22nd International conference of ISOPE, Rhodes, Greece (with D1鈴木，M1園田）
- May 30 - June 06, 2012 : Meeting for centrifuge pipeline tests and Amtrak dynamic testing ; Columbia University, NY, USA
2011
- October 06-15, 2011 : Meeting for centrifuge pipeline test and Amtrak dynamic testing ; Columbia University, NY, USA
- September 1-3, 2011 : IS - Seoul, Deformation Characteristics of Geomaterials, Seoul, Korea (with M2 鈴木)
- June 19-25, 2011 : International conference of ISOPE, Maui, USA (with M1 百々)
- May 19-25, 2011 : Amtrak, Maryland, University of Delaware and Columbia University, NY, USA
- March 13-24, 2011 : Centrifuge pipeline test; Columbia University, NY, USA (with B3園田，甲賀)
2010
- October 06-15, 2010 : Centrifuge pipeline test; Columbia University, NY, USA(with M1鈴木)
- September 07 - 18，2010 : Centrifuge pipeline test; Columbia University, NY, USA (with M2花澤，B4柳)
- August 04 - 07，2010 : Preparation for Centrifuge pipeline tests; Columbia University, NY, USA （with B4柳）
- June 26 - July 02，2010 : International Conference of Physical Modelings for Geotechnics, ETH, Zurich, Switzerland
- June 24-25, 2010 : The meeting for centrifuge testing, Bern University, Bern, Switzerland
- June 21-24, 2010 : International Conference of ISOPE 2010, Beijing, China (with M2花澤，M1岩崎，奥野，鈴木)
- May 22-30, 2010 : International Conference of Geosynthetics Society, Grajua, Brazil （with M2花澤）
- January 07-14, 2010, Meeting for Centrifuge Tests ; Columbia University, NY, USA(with M2花澤)
2009
- September 07 - 18, 2009 : Centrifuge Geotechnical lecture and Meeting, Columbia University, NY, USA, and University of California, Davis, CA, USA
2008
- September 14-19, 2008 : Columbia University,NY, USA
- September 12-13, 2008 : Cambridge University, UK
- September 07-11, 2008 : 4th EuroGeo Conference, Heriot-Watt University, Edinburgh, UK (with M1泉，柏木)
- July 14-20, 2008
- March 17-24, 2008 : Columbia University，Meeting of Geotechnical Engineering , City College of New York, NY, USA (Prof. Ryu)
2006
April 14-24, 2006: Columbia and Harvard University
March 25-31, 2006
Dec.24, 2005 - Jan.01, 2006 : ASCE High Fills for Final submission; 緊急入院のため延期!!，Columbia University, NY,USA
2005
Sep. 11-19, 2005 : 杭の水平載荷実験(遠心模型)＆ ASCE High Fills paper 再々閲読返信；Columbia University, NY, USA
March 25-31, 2005 :
November 28- December 05, 2004 : Columbia University for Dynamic measuring system installation, NY, USA
2004
March 26- April 03, 2004
2003
July 10-19, 2003
2002
November 05-13, 2002
March 13-21, 2002
2001
October 08-15, 2001 ; Int. Conf. for Earthquake Engineering, Philadelphia with Prof Kon and China house in NY.
July 12-19, 2001 ; Int. Conf. of Pipeline Engineering, San Diego, CA and visit KUBOTA KTC Mr. Katagiri. through NY.
1999
May 16 - 23, 1999
Feb. 12 - March 02, 1999 ; Renselar Polytechnics Institute, Centrifuge tests with Mr. Sun. Troy, NY
1998
Dec. 03-30, 1998 ; Renselar Polytechnics Institute, Centrifuge test. Tory, NY.
May 01-16, 1998 : Lecturer of University of Delaware, DE, USA
1996
November 04-10, 1996: Lecture for Underground Structures Seminar : Asian Institute of Technology, Bangkok, Thailand
1995
June 23- July 02, 1995, L.A. Kubota Office, Int. Conf. of Pipeline: Seattle, WA, USA, Colorado University, University of Delaware, NY Kubota Office, USA
