| 2023 | VTC | Optimal Deployment of an Aerial Base Station in Heterogeneous Cellular Networks for Heterogeneous User Traffic Demands. | Takeshi Hirai, Kouki Doi, Naoki Wakamiya |
| 2013 | HCI | Relationship between Weight of Our Developed White Cane and Muscle Load on the Upper Limbs during Swinging Action of the Cane. | Kouki Doi, Atsushi Sugama, Takahiro Nishimura, Akihiko Seo, Shuichi Ino, Kiyohiko Nunokawa, Kazuhiko Kosuge, Akito Miyazaki, Masaaki Sugiyama, Yoshihiro Tanaka, Mayumi Sawada, Ken Kaneko, Susumu Oouchi, Katsuhiro Kanamori |
| 2013 | HCI | Relationship between Surface Property and Operability of Tablet Terminal with Touch-Sensitive Screen. | Takahiro Nishimura, Kouki Doi, Hiroshi Fujimoto |
| 2013 | HCI | Vibration of the White Cane Causing a Hardness Sense of an Object. | Kiyohiko Nunokawa, Shuichi Ino, Kouki Doi |
| 2010 | ASSETS | Development of tactile map production device and tactile map with multilingual vocal guidance function. | Kouki Doi, Wataru Toyoda, Hiroshi Fujimoto |
| 2010 | SIGGRAPH | ThermoGame: video game interaction system that offers dynamic temperature sensation to users. | Tetsuaki Baba, Kumiko Kushiyama, Kouki Doi |
| 2010 | SIGGRAPH | Temperature design display device to use peltier elements and liquid crystal thermograph sheet: "Thermo-Pict neo". | Kumiko Kushiyama, Tetsuaki Baba, Kouki Doi, Shinji Sasada |
| 2010 | SIGGRAPH | Thermal design display device to use the thermal tactile illusions: "Thermo-Paradox". | Kumiko Kushiyama, Tetsuaki Baba, Kouki Doi, Shinji Sasada |