Emergency Condition Discrimination for Single People Using a CO2 Sensor and Body Detectors
 Statistics Bureau, Ministry of Internal Affairs and Communications, "Statistical Look at the Elderly in Japan (65 and Over)," Ministry of Internal Affairs and Communications, 2017, p. 1.
 Cabinet Office, "Annual Report on the Aging Society: 2011," Cabinet Office, 2011, pp. 177-186.
 Ministry of Health, Labour and Welfare, "Promotion Council for Creating Communities Where Elderlies Can Live Alone with Peace of Mind - Report-" Ministry of Health, Labours and Welfare, 2008, pp. 1-47.
 Cabinet Office, "Materials for preventing unattended deaths of victims," Cabinet Office, 2011, pp. 62-74.
 Ministry of Health, Labour and Welfare, "Overview of Initiatives for Preventing Unattended deaths," Ministry of Health, Labour and Welfare, 2013, pp.1-21.
 K. Kobayashi, and K. Goto, "Development, Present State and New Initiatives of the 'Elderly Person Watching System,'" Journal of Nagoya Gakuin University, Vol. 52, No. 4, 2016, pp. 23-38.
 K. Ito, T. Matsumura, H. Miura, and T. Ono, "Study of Discriminate Conditions of Living Alone in Multiple Sensors by using MDS," The 15th SICE System Integration Division Annual Conference, 3M3-3, 2014, pp. 2675-2676.
 I. Kamihira, T. Nakajima, T. Matsumura, H. Miura, and T. Ono, "Abnormality Detection of Persons Living Alone Using Daily Life Patterns Obtained from Sensors," WASET International Journal of Computer, Electrical, Automation, Control and Information Engineering, Vol. 7, No. 12, 2013, pp. 1545-1549.
 T. Matsumura, I. Kamihira, K. Ito, and T. Ono, "Proposal of the Anomaly Detection Method of Live-alone by LOF using Multiple Sensors," IEEJ Transactions on Fundamentals and Materials, Vol. 135, No. 12, 2015, pp. 749-755.
 N. Sakai, T. Matsumura, H. Miura, and T. Ono, "Detection of urgent abnormal condition of single person by CO2 sensor," Article Collection for the 2018 Annual Meeting of the Institute of Electrical Engineers of Japan, 1-057, 2018, p. 79.
 M. Cara, "Tentative classification of emergency situations," Planning and organization of emergency medical services, World Health Organization regional office for Europe, 35, 1981, pp. 21-28.
 K. Shinozaki, N. Kitamura, T. Hirano, A. Yoshida, and H. Hirasawa, "The analysis of pathophysiology and outcome of hanging", Journal of Japanese Association for Acute Medicine, No. 16, 2005, pp. 573-580.