Nano-watt power management and vibration sensing on a dust-size batteryless sensor node for ambient intelligence applications. - Toshishige Shimamura; Mamoru Ugajin; Kenji Suzuki; Kazuyoshi Ono; Norio Sato; Kei Kuwabara; Hiroki Morimura; Shin'ichiro Mutoh (ISSCC, 2010)

Wearable blood flowmeter appcessory with low-power laser Doppler signal processing for daily-life healthcare monitoring. - Kei Kuwabara; Yuichi Higuchi; Takayuki Ogasawara; Hiroshi Koizumi; Tsuneyuki Haga (EMBC, 2014)

Visual methods to assess cold fingers and experimental verification. - Kyoko Ishikawa; Natsuki Shimoyama; Hiromi Mannen; Kei Kuwabara; Hiroto Matsuoka; Kimio Oguchi (EMBC, 2015)

Lightweight heartbeat detection algorithm for consumer grade wearable ECG measurement devices and its implementation. - Nobuaki Matsuura; Kei Kuwabara; Takayuki Ogasawara (EMBC, 2022)