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 (ICCE, 2002)

DVTS-based remote laboratory across the Pacific over the gigabit network. - Tatsuya Kikuchi; Shuichi Fukuda; Akinobu Fukuzaki; Keizo Nagaoka; Kenji Tanaka; Takashi Kenjo; Dale A. Harris (IEEE Trans. Educ., 2004)

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 (ICCE, 2005)

On-Line Content Analysis System using e-Learning Time Data. - Maomi Ueno; Keizo Nagaoka (AICCSA, 2006)

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 (ICCE, 2006)

Conducting Classroom Discussions in the Manner of an Orchestra Using a Mobile Phone Based Response Analyzing System. - Ryo Nakai; Keizo Nagaoka (ICALT, 2007)

Method for Evaluating Participants' Roles in Online Text Discussion Using Network Analysis. - Kanako Niki; Takehiro Furuta; Takako Akakura; Takahito Tomoto; Yuri Nishihori; Keizo Nagaoka (ICCE, 2011)

Detecting Redundant Items in Construction of Multiple Equivalent Test Forms using Latent Dirichlet Allocation. - Pokpong Songmuang; Maomi Ueno; Keizo Nagaoka (ICCE, 2011)

Method for evaluating discussion status in online text discussions using network analysis. - Kanako Niki; Takehiro Furuta; Takako Akakura; Takahito Tomoto; Yuri Nishihori; Keizo Nagaoka (ICCE, 2012)

Correlation between Teaching Behavior and Real-Time Student Evaluations. - Yusuke Kometani; Takahito Tomoto; Takako Akakura; Keizo Nagaoka (T4E, 2014)

Development of a Seminar Management System. - Yusuke Kometani; Keizo Nagaoka (HCI (5), 2015)

Construction of a Literature Review Support System Using Latent Dirichlet Allocation. - Yusuke Kometani; Keizo Nagaoka (HCI (5), 2016)

Development of a Seminar Management System: Evaluation of Support Functions for Improvement of Presentation Skills. - Yusuke Kometani; Keizo Nagaoka (HCI (4), 2017)

Analysis of Student Activity in a Virtual Seminar Using a Seminar Management System. - Yusuke Kometani; Masanori Yatagai; Keizo Nagaoka (HCI (5), 2018)

"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 (HCI (5), 2020)