| 2012-08 -- 2014-09 | | CollabTech2014 Conference Committee General Co-Chair |
| 2011 -- 2013 | JAPANESE SOCIETY FOR INFORMATION AND SYSTEMS IN EDUCATION | Editorial board member of the special journal issue on "Toward advanced learning support utilizing ICT" |
| 2012-05 -- 2013-05 | THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS. | Web企画小委員会企画編集委員 |
| 2012 -- 2013 | Information Processing Society of Japan | Editorial board member of the special journal issue on "Interaction" |
| 2011 -- 2013 | Information Processing Society of Japan | Editorial board member of the special journal issue on "Collaboration technologies and network services that enrich and secure our society" |
| 2011 -- 2012 | Information Processing Society of Japan | Editorial board member of the special journal issue on "Interaction" |
| 2010 -- 2012 | Information Processing Society of Japan | Editorial board member of the special journal issue on "Collaboration technologies for augmenting knowledge" |
| 2010 -- 2011 | Information Processing Society of Japan | Editorial board member of the special journal issue on "Technology, design and applications of interaction" |
| 2009 -- 2011 | Information Processing Society of Japan | Editorial board member of the special journal issue on "Expanding network service technologies by visualization" |
| 2010 -- 2011 | THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS. | SIG HCS (Human Communication Science) Steering Board member |
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