The proposal for appendable projection system. - Kyoji Hata; Shigeki Doi (GCCE, 2014)

Low-cost and Device-free Activity Recognition System with Energy Harvesting PIR and Door Sensors. - Yukitoshi Kashimoto; Kyoji Hata; Hirohiko Suwa; Manato Fujimoto; Yutaka Arakawa; Takeya Shigezumi; Kunihiro Komiya; Kenta Konishi; Keiichi Yasumoto (MobiQuitous (Adjunct Proceedings), 2016)