Video-Popularity-Based Caching Scheme for P2P Video-on-Demand Streaming. - Takaya Fujimoto; Rei Endo; Kei Matsumoto; Hiroshi Shigeno (AINA, 2011)

Subthreshold SRAM with Write Assist Technique Using On-Chip Threshold Voltage Monitoring Circuit. - Kei Matsumoto; Tetsuya Hirose; Yuji Osaki; Nobutaka Kuroki; Masahiro Numa (IEICE Trans. Electron., 2011)

Robust Subthreshold CMOS Digital Circuit Design with On-Chip Adaptive Supply Voltage Scaling Technique. - Yuji Osaki; Tetsuya Hirose; Kei Matsumoto; Nobutaka Kuroki; Masahiro Numa (IEICE Trans. Electron., 2011)

GBLT-VG for High User Densities by User Group Behavior and Hot Point in MMO Virtual Environment. - Rei Endo; Kei Matsumoto; Hiroshi Shigeno (J. Netw. Syst. Manag., 2012)

Route Search and Evaluation Method Including Charging Plan for Electric Vehicles. - Takuya Taguchi; Kei Matsumoto; Keita Imamura; Koichiro Goto; Kazuya Oizumi; Kenji Tanaka; Kazuhiro Aoyama (Int. J. Autom. Technol., 2014)

Coherence Spaces and Uniform Continuity. - Kei Matsumoto (FoSSaCS, 2017)