Is perfect repair always perfect?

Ji Hwan Cha () and Maxim Finkelstein ()
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Ji Hwan Cha: Ewha Womans University
Maxim Finkelstein: University of the Free State

TEST: An Official Journal of the Spanish Society of Statistics and Operations Research, 2020, vol. 29, issue 1, No 6, 90-104

Abstract: Abstract Most often, perfect repair is conventionally understood as a replacement of the failed item by the new one. However, contrary to the common perception, new does not mean automatically that the distribution to the next failure is identical to that on the previous cycle. First, it can be different due to dynamic environment and, secondly, due to heterogeneity of items for replacement. Both of these causes that affect the failure mechanism of items are studied. Environment is modeled by the non-homogeneous Poisson shock process. Two models for the failure mechanism defined by the extreme shock model and the cumulative shock model are considered. Examples illustrating our findings are presented.

Keywords: Statistical perfect repair; Information-based perfect repair; Shock environment; Stochastic intensity; 62P30 (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1007/s11749-019-00645-7

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