A sleepiness level detection device detects a heartbeat signal when a time equal to or longer than T1 and equal to or shorter than T2 has elapsed since the start of driving. In this method, the timing of start of oscillating motion of oscillating rollers is regulated. 1 parts by weight of ester surfactant, 3-20 parts by weight of a hydrophilic surfactant, 1. This calcium phosphate cement compositions can be safely stored for years yet still retain its full reactivity when mixed. The channel codes include a genre code and a numerical code.