Polyester non-woven fabric finger cover as a TRUCT Braille reading assistance tool for Braille learners. - Kouki Doi; Hiroshi Fujimoto (Medical Biol. Eng. Comput., 2007)

Development of tactile map production device and tactile map with multilingual vocal guidance function. - Kouki Doi; Wataru Toyoda; Hiroshi Fujimoto (ASSETS, 2010)

ThermoGame: video game interaction system that offers dynamic temperature sensation to users. - Tetsuaki Baba; Kumiko Kushiyama; Kouki Doi (SIGGRAPH Posters, 2010)

Temperature design display device to use peltier elements and liquid crystal thermograph sheet: "Thermo-Pict neo". - Kumiko Kushiyama; Tetsuaki Baba; Kouki Doi; Shinji Sasada (SIGGRAPH Posters, 2010)

Thermal design display device to use the thermal tactile illusions: "Thermo-Paradox". - Kumiko Kushiyama; Tetsuaki Baba; Kouki Doi; Shinji Sasada (SIGGRAPH Posters, 2010)

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; et al. (HCI (28), 2013)

Relationship between Surface Property and Operability of Tablet Terminal with Touch-Sensitive Screen. - Takahiro Nishimura; Kouki Doi; Hiroshi Fujimoto (HCI (28), 2013)

Vibration of the White Cane Causing a Hardness Sense of an Object. - Kiyohiko Nunokawa; Shuichi Ino; Kouki Doi (HCI (28), 2013)

A pilot study of a plantar sensory evaluation system for early screening of diabetic neuropathy in a weight-bearing position. - Shuichi Ino; Manabu Chikai; Noriyo Takahashi; Tadasuke Ohnishi; Kouki Doi; Kiyohiko Nunokawa (EMBC, 2014)

Judging hardness of an object from the sounds of tapping created by a white cane. - Kiyohiko Nunokawa; Yoshikazu Seki; Shuichi Ino; Kouki Doi (EMBC, 2014)

Development of Communication Assistive Technology for Persons with Deaf-Blindness and Physical Limitation. - Takuro Hatakeyama; Takashi Watanabe; Kiriko Takahashi; Kouki Doi; Akiko Fukuda (AAATE Conf., 2015)

Application of metal hydride paper to simple pressure generator for use in soft actuator systems. - Shuichi Ino; Kouji Sakaki; Minako Hosono; Kouki Doi; Shigenobu Shimada; Manabu Chikai (EMBC, 2015)

Evaluation of touch-sensitive screen tablet terminal button size and spacing accounting for effect of fingertip contact angle. - Takahiro Nishimura; Kouki Doi; Hiroshi Fujimoto (EMBC, 2015)

Experimental Study on Shapes of Tactile Signs for Distinguishable Identification on Body Soap Containers. - Kouki Doi; Takahiro Nishimura; Tsutomu Wada; Hiroshi Fujimoto; Yasuyuki Hoshikawa (J. Adv. Comput. Intell. Intell. Informatics, 2017)

Development and Evaluation of a Device for Inducing Kinesthetic Illusion of Dual Joint Movements. - Yumi Umesawa; Kouki Doi; Hiroshi Fujimoto (J. Adv. Comput. Intell. Intell. Informatics, 2017)

The Influence of the Manner of Grasping a White Cane on the Ability of Visually Impaired People to Perceive the Texture of Objects. - Kiyohiko Nunokawa; Manabu Chikai; Kouki Doi; Shuichi Ino (IHSED, 2018)

Basic Study of the Influence of the Manner of Grasping, Number of Contacts, and Auditory Information on Recognition of Hardness of Objects by Visually Impaired Persons Using White Canes. - Kiyohiko Nunokawa; Manabu Chikai; Kouki Doi; Shuichi Ino (J. Adv. Comput. Intell. Intell. Informatics, 2018)

Identification of Physical Factors Contributing to Hardness Perception of Objects during Indirect Tapping using White Canes. - Takeshi Tanabe; Kiyohiko Nunokawa; Kouki Doi; Shuichi Ino (WHC, 2021)

Assessing the Stiffness Perception of Acupressure Massage Beginning Learners: A Pilot Study. - Kouki Doi; Saito Sakaguchi; Takahiro Nishimura; Hiroshi Fujimoto; Shuichi Ino (Sensors, 2021)

Braille learning materials for Braille reading novices: experimental determination of dot code printing area for a pen-type interface read aloud function. - Kouki Doi; Takahiro Nishimura; Masumi Takei; Saito Sakaguchi; Hiroshi Fujimoto (Univers. Access Inf. Soc., 2021)

Navigation for precise walking of blind people based on pulling illusion devices embedded in white canes. - Kiyohiko Nunokawa; Takeshi Tanabe; Hotaka Takizawa; Kouki Doi; Shuichi Ino (LifeTech, 2022)

Contribution of Vibration, Tapping Sound, and Reaction Force to Hardness Perception During Indirect Tapping Using a White Cane. - Takeshi Tanabe; Kiyohiko Nunokawa; Kouki Doi; Shuichi Ino (IEEE Trans. Haptics, 2022)

Optimal Deployment of an Aerial Base Station in Heterogeneous Cellular Networks for Heterogeneous User Traffic Demands. - Takeshi Hirai; Kouki Doi; Naoki Wakamiya (VTC2023-Spring, 2023)

White Cane-Type Holdable Device Using Illusory Pulling Cues for Orientation & Mobility Training. - Takeshi Tanabe; Yasuhiro Fujimoto; Kiyohiko Nunokawa; Kouki Doi; Shuichi Ino (IEEE Access, 2023)