John Yuan

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The purpose of this article is to propose both state and time-dependent preventive maintenance policy for a multi-state deteriorating system, which is equipped with inspection equipment(s) connected to a computer center. After the system being identified as state x at nd through computation by the computer center after inspection (or measurement) via(More)
The study monitored physiological parameter changes after 120-min of simulated driving. Blood pressures, heart rate (HR), heart rate variability (HRV) and palm temperatures were measured using an ANSWatch(®) monitor. Subjects were divided into two groups (A & B). Both groups performed 2-hour driving, but group B additionally took a 15-min exercise break.(More)
Keywords: PM policy Imperfect maintenance Multiple actions Time and state dependent a b s t r a c t This paper is to propose a two-stage preventive maintenance (PM) policy for the multi-state deterioration system under periodic inspection and with multiple candidate actions for PM. Such policy is mainly to schedule PM optimally and also on how to choose the(More)
The purpose of this article is to propose a both state and time dependent preventive maintenance policy for a deteriorating system. Using health index integrating the parameters inspected by sensors can generate the real-time equipment operating state. In this research, a discrete time Markovian multi-state deteriorating model is adopted to describe the(More)