Development of a talking robot. - Kazufumi Nishikawa; Kouichirou Asama; Kouki Hayashi; Hideaki Takanobu; Atsuo Takanishi (IROS, 2000)

Mechanical Design of a Talking Robot for Natural Vowels and Consonant Sounds. - Kazufumi Nishikawa; Kouichirou Asama; Kouki Hayashi; Hideaki Takanobu; Atsuo Takanishi (ICRA, 2001)

Control system for talking robot to replicate articulatory movement of natural speech. - Takemi Mochida; Masaaki Honda; Kouki Hayashi; Toshiharu Kuwae; Kunihiro Tanahashi; Kazufumi Nishikawa; Atsuo Takanishi (INTERSPEECH, 2002)

Life size humanoid robot that reproduces gestures as a communication terminal: appearance considerations. - Akira Hiraiwa; Kouki Hayashi; Hiroyuki Manabe; Toshiaki Sugimura (CIRA, 2003)

Development of face robot to express the individual face by optimizing the facial features. - Kazuko Itoh; Hiroyasu Miwa; Yoshitaka Onishi; Kazutaka Imanishi; Kouki Hayashi; Atsuo Takanishi (Humanoids, 2005)

Development and Evaluation of Face Robot to Express Various Face Shape. - Kouki Hayashi; Yoshitaka Onishi; Kazuko Itoh; Hiroyasu Miwa; Atsuo Takanishi (ICRA, 2006)

Analysis of twitter messages about the osaka metropolis plan in Japan. - Kouki Hayashi; Eiichi Umehara; Yuuki Ogawa (IEEE BigData, 2017)

A Study of Rental Cycle System using Location Information and Contribution to City Planning. - Yumeto Kojima; Kouki Hayashi; Kenta Akamatu; Kyouiti Hasegawa; Mikiko Sode Tanaka (LifeTech, 2019)

Verification Test of Tourist Information System Using Location Information. - Kouki Hayashi; Kenta Akamatu; Ryo Sakai; Naoki Aoyama; Mikiko Sode Tanaka (LifeTech, 2020)