Development of Portable Robotic Operation Terminals to Achieve Increased Safety and Usability and a Study on the Effectiveness of Wireless Terminals. - Hidetoshi Fukui; Satoshi Yonejima; Masatake Yamano; Masao Dohi; Tomonori Nishiki; Mariko Yamada; Toshihiro Fujita (HCI (15), 2009)