Localization of multiple sound sources based on inter-channel correlation using a distributed microphone system. - Kook Cho; Hajime Okumura; Takanobu Nishiura; Yoichi Yamashita (INTERSPEECH, 2008)

Multiple Sound Source Localization Based on Inter-Channel Correlation Using a Distributed Microphone System in a Real Environment. - Kook Cho; Hajime Okumura; Takanobu Nishiura; Yoichi Yamashita (IEICE Trans. Inf. Syst., 2010)

Local deep level transient spectroscopy using super-higher-order scanning nonlinear dielectric microscopy. - Norimich Chinone; Ryoji Kosugi; Yasunori Tanaka; Shinsuke Harada; Hajime Okumura; Yasuo Cho (Microelectron. Reliab., 2016)

Challenges to realize highly reliable SiC power devices: From the current status and issues of SiC wafers. - Junji Senzaki; Shohei Hayashi; Yoshiyuki Yonezawa; Hajime Okumura (IRPS, 2018)