2009
DOI: 10.1239/jap/1253279857
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Bounds on Variances of Lifetimes of Coherent and Mixed Systems

Abstract: We consider coherent and mixed reliability systems composed of elements with independent and identically distributed lifetimes. We present upper bounds on variances of system lifetimes, expressed in terms of variances of single components. We also discuss attainability conditions and some special cases and examples.

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Cited by 21 publications
(16 citation statements)
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“…2 ) and (T (2) 1 , T (2) 2 ) be the joint lifetimes of the first and second paired systems. Our goal is to identify conditions which imply some form of stochastic relationship between (T (…”
Section: T (1)mentioning
confidence: 99%
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“…2 ) and (T (2) 1 , T (2) 2 ) be the joint lifetimes of the first and second paired systems. Our goal is to identify conditions which imply some form of stochastic relationship between (T (…”
Section: T (1)mentioning
confidence: 99%
“…2 ) and (T (2) 1 , T (2) 2 ). Our first result in this direction gives sufficient conditions based on the shift ordering between the signatures of two systems for their respective lifetimes to obey the bivariate lower orthant stochastic ordering (see [10, p. …”
Section: T (1)mentioning
confidence: 99%
See 1 more Smart Citation
“…or exchangeable dependent components, especially k-outof-n systems. For instance, see [1], [8], [9], [10], [12], [13], [15], [21], [22], [24], [26], [27], and [28].…”
Section: Mixture Representations Of Inactivity Timesmentioning
confidence: 99%
“…The bounds were refined by Papadatos (1997) and Jasiński and Rychlik (2011) in the case of symmetrically distributed random variables. Jasiński et al (2009) extended the results of Papadatos (1995) to the case of arbitrarily fixed mixed systems. Rychlik (1994) described methods of calculating sharp lifetime variance bounds for k-out-of-n systems built of exchangeable components with a known marginal lifetime distribution.…”
Section: Introduction and Auxiliary Resultsmentioning
confidence: 90%