Sei Takahashi

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OBJECTIVES We sought to compare the characteristics of patients with asthma presenting to the emergency department (ED) during the night-time with those of patients presenting at other times of the day, and to determine whether the time of ED presentation is associated with the risk of hospitalisation. DESIGN AND SETTING A multicentre chart review study(More)
This paper introduced a novel railway system, Automatic Train Protection and Block (ATPB) briefly, which is proposed to improve the efficiency of existing regional train lines with low cost in Japan. The biggest superiority of ATPB system is a great use of universal and mature technologies, such as GPS and regular mobile telephone networks, so that there is(More)
— Railway interlocking systems ensure the safe operation of trains in stations by controlling sets of devices and equipment. Component-based decentralized railway interlocking system (CBDRIS) is a recently presented railway signalling in which component-based technology is applied. For such a safety-critical real-time system, fail-safe and fault-tolerance(More)
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