| 2020 | HCI | "Two Way or Go Away": Development of DPP (Digital Presentation Platform) Which Supports to Make a College Teachers Get Two-Way Communication Classroom as a Facilitators. | Keizo Nagaoka, Ryoji Kubota |
| 2018 | HCI | Analysis of Student Activity in a Virtual Seminar Using a Seminar Management System. | Yusuke Kometani, Masanori Yatagai, Keizo Nagaoka |
| 2017 | HCI | Development of a Seminar Management System: Evaluation of Support Functions for Improvement of Presentation Skills. | Yusuke Kometani, Keizo Nagaoka |
| 2016 | HCI | Construction of a Literature Review Support System Using Latent Dirichlet Allocation. | Yusuke Kometani, Keizo Nagaoka |
| 2015 | HCI | Development of a Seminar Management System. | Yusuke Kometani, Keizo Nagaoka |
| 2012 | ICCE | Method for evaluating discussion status in online text discussions using network analysis. | Kanako Niki, Takehiro Furuta, Takako Akakura, Takahito Tomoto, Yuri Nishihori, Keizo Nagaoka |
| 2011 | ICCE | Method for Evaluating Participants' Roles in Online Text Discussion Using Network Analysis. | Kanako Niki, Takehiro Furuta, Takako Akakura, Takahito Tomoto, Yuri Nishihori, Keizo Nagaoka |
| 2011 | ICCE | Detecting Redundant Items in Construction of Multiple Equivalent Test Forms using Latent Dirichlet Allocation. | Pokpong Songmuang, Maomi Ueno, Keizo Nagaoka |
| 2007 | ICALT | Conducting Classroom Discussions in the Manner of an Orchestra Using a Mobile Phone Based Response Analyzing System. | Ryo Nakai, Keizo Nagaoka |
| 2006 | AICCSA | On-Line Content Analysis System using e-Learning Time Data. | Maomi Ueno, Keizo Nagaoka |
| 2006 | ICCE | Enabling a Multilateral Distance Class between China, Korea and Japan: Effective Utilization of Networking Technologies. | Yuri Nishihori, Keizo Nagaoka, Nozomu Nishinaga, Kenji Tanaka, Yuichi Yamamoto, Haruhiko Sato, Masahiro Harada, Ruimin Shen, Jinjin Feng, Myunghee Ju Kang |
| 2005 | ICCE | Effectiveness of Collaborative Learning in the Network-based Language Communities. | Yuri Nishihori, Nozomu Nishinaga, Keizo Nagaoka, Yoko Collier-Sanuki, Kenji Tanaka, Yuichi Yamamoto, Masahiro Harada |
| 2002 | ICCE | A Measure of Dissimilarity between the Structure of Instructional Material and the Structure of the Learner's Understanding. | Nobuyoshi Yonezawa, Kazuhito Hirai, Shizuaki Takahashi, Youzou Miyadera, Keizo Nagaoka |