| 2018 | HealthCom | Research on an information sharing system using COI specialized for urgency in the home care field. | Yuya Totsuka, Hiroshi Yajima |
| 2018 | KES | Research on Hybrid Information Evaluation Type Watching Technology for the Improvement of QOL of the Elderly. | Jun Sawamoto, Kota Watanabe, Hiroshi Yajima, Manabu Kurosawa, Yoji Taniguchi |
| 2016 | HCI | Supportive Technology for Managing Relevant Information in the Medical and Nursing Care Field. | Yuya Totsuka, Hayato Oiwa, Hiroshi Yajima |
| 2016 | HCI | Communication Support via a Collocation Dictionary. | Ryota Yaguchi, Hiroshi Yajima |
| 2016 | HCI | A Method Using Collective Intelligence for Communication Activation Among Elderly People Living Alone. | Hiroshi Yajima, Manabu Kurosawa, Jun Sawamoto |
| 2014 | HCI | Proposal of Collaborative Learning Support Method in Risk Communications. | Hiroshi Yajima, Naohisa Tanabe, Ryichi Sasaki |
| 2013 | HCI | The Proposal of the Remote Consultation Service System Using the Outline Function for Consultation. | Hiroshi Yajima, Takuto Goto |
| 2012 | KES | Acquisition of the Life Log Using Home Electric Appliances and its Application. | Yuya Uesugi, Jun Sawamoto, Norihisa Segawa, Eiji Sugino, Hiroshi Yajima |
| 2012 | SMC | IT risk management framework for business continuity by change analysis of information system. | Masaki Samejima, Hiroshi Yajima |
| 2011 | HCI | Proposal of Collaborative Learning Support Method in Risk Communications. | Hiroshi Yajima, Naohisa Tanabe |
| 2009 | HCI | Remote Consultation System Using Hierarchically Structured Agents. | Hiroshi Yajima, Jun Sawamoto, Kazuo Matsuda |
| 2007 | HCI | Evaluation of the Participant-Support Method for Information Acquisition in the "Multiplex Risk Communicator". | Hiroshi Yajima, Tomohiro Watanabe, Ryichi Sasaki |
| 2006 | ETFA | Proposal of Risk Communications Supporting Method in Multiplex Risk Communicator. | Hiroshi Yajima, Shinichi Matsumoto, Ryichi Sasaki |
| 2001 | ETFA | An asymmetric communication support system for consultations with cooperation between sales person and agents. | Hiroshi Yajima, Tadashi Tanaka, Yoji Taniguchi, Yoshifumi Koizumi |
| 1998 | SMC | Information organizing and sharing method in business media service for virtual manufacturing enterprise. | Hiroyuki Kojima, Toshiyuki Yuasa, Hiroshi Yajima, Rei Itsuki |
| 1998 | SMC | Integration of heterogeneous multimedia information for a strategic planning system. | Hiroshi Yajima, Yoshiaki Yoshikawa, Maki Tamano, Rei Itsuki, Tadashi Hirose |
| 1997 | HCI | Tele-Consultation System Supporting Asymmetrical Communications Between Customers and Expert Staff in Distributed Environment. | Tadashi Tanaka, Hirotaka Mizuno, Hiroshi Tsuji, Hiroyuki Kojima, Hiroshi Yajima |