3Stefanov D H, Bien Z, Bang W C. The smart house for older persons and persons with physical disabilities: structure, technology, arrangements, and perspectives [J]. IEEE Trans on Neural System and Rehabilitation Engineering, 2004, 2: 228-250.
4Kim KH, Bang SW, Kim SR. Emotion recognition system using short-term monitoring of physiological signals [J]. Med. Biol. Eng. Comput., 2004, 42: 419-427.