Underwater Wireless Optical Access Network with OFDM/SBMA System: Concept and Demonstration. - Takahiro Kodama; Koki Arai; Kota Nagata; Kazuhiko Nakamura; Masanori Hanawa (OECC/PSC, 2019)

Data Distribution and Competition Law Issues. - Koki Arai (IEEE BigData, 2021)

Perspectives on the evaluation of rules for the social implementation of autonomous robots (on viewpoints for evaluating various rules). - Koki Arai (Adv. Robotics, 2021)

Public perceptions of autonomous lethal weapons systems. - Koki Arai; Masakazu Matsumoto (AI Ethics, 2024)

What's wrong with "Death by Algorithm"? Classifying dignity-based objections to LAWS. - Masakazu Matsumoto; Koki Arai (AI Soc., 2025)