A subproblem-centric model and approach to the nurse scheduling problem. - Atsuko Ikegami; Akira Niwa (Math. Program., 2003)

An Information Platform for Smart Communities Realizing Data Usage Authentication and Secure Data Sharing. - Akira Niwa; Hiroaki Nishi (CANDAR, 2017)

Self-Organizing Map Using Classification Method for Services in Multilayer Computing Environments. - Tomomu Iwai; Yuta Ohno; Akira Niwa; Yuichi Nakamura 004; Keiya Sakai; Kanae Matsui; Hiroaki Nishi (IECON, 2018)