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Title: Availability analysis of periodically inspected systems with random walk model
Authors: Cui, L. 
Xie, M. 
Keywords: Instantaneous availability
Periodic inspection
Random walk
Repair or replacement
Stochastic process
Issue Date: Dec-2001
Citation: Cui, L., Xie, M. (2001-12). Availability analysis of periodically inspected systems with random walk model. Journal of Applied Probability 38 (4) : 860-871. ScholarBank@NUS Repository.
Abstract: In this paper, the instantaneous availability of a system maintained under periodic inspection is investigated using random walk models. Two cases are considered. In the first model, the system is repaired or modified and it is assumed to be as good as new upon periodic inspection and maintenance. In the second model, the system is not modified after the inspection if the system is still working, and the condition of the system is assumed to be the same as that before the inspection. For both models the failures only can be found through the inspection. Perfect repair or replacement of a failed system is assumed to be carried out, but the time it takes can be constant or of a random length. The relationship between this problem and the random walk model in a two-dimensional plane is described. Several new results are also shown.
Source Title: Journal of Applied Probability
ISSN: 00219002
DOI: 10.1239/jap/1011994177
Appears in Collections:Staff Publications

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