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The author derives a lower confidence limit P, at a given level y for the reliability P of systems having mixed reliability structures (series-parallel and parallel-series systems) if P is estimated on ... In the case of a series-parallel system the system reliability P is given by the formula P=1—(1—II%,p,)’, where N is the number of elements in series connection and s is the number of series systems in ...
systems (series, standby-redundant, or parallel- redundant), reliability models for maintained systems (series of parallel-redundant) and confidence bounds for system reliability. ... Chapter 8 deals with Bayes methods in reliability, with sections devoted to comparison of Bayes and classical methods, loss functions and Bayes estimates, Bayes point and interval estimates for reliability ...
Rennie, Confidence bounds for reliability of coherent systems based on binomially distributed component data (pp. 265-280); P. K. Sen [Pranab Kumar Sen] and M. C. ... Easterling, Lower confidence bounds on system reliability using component data: the maximus methodology (pp. 353-367); Jaya Srivastava, Experimental de- sign for the assessment of reliability (pp. 369- ...
Although audits are used to verify program implementation, there is a need for some product monitoring to measure the effectiveness and performance of the control systems. ... Information time series of audits and inspections conducted are shown to be more indicative of program performance than snapshot inspections of the final product. ... monocytogenes Table 3 3 Binomial confidence limit (a = 0.05) ranges for a non-compliance rate of 5% Lots tested Lots failed Lower bound (%) Upper bound (%) Confidence range (%) 20 ...doi:10.1016/j.foodcont.2006.02.019 fatcat:lsdhcfxykjaqlacfacjwna5rei
Simulations and numerical examples show that the new model generally outperforms Esary-Proschan and Edge-Packing bounds, especially for high reliability systems. q ... Given component test data, the new model provides tight moment bounds for the network reliability estimate. ... For two-terminal reliability, the ESP bounds can be viewed as a graph transformation method. The graph for the upper bound is a parallel combination of minpaths. ...doi:10.1016/s0951-8320(03)00117-0 fatcat:4vxho5sme5eqvlufsefnbwyg4q
The method as presented is for series systems only of binomial components in Ref. 10; it is extended to parallel and combinations of series and parallel connections of binomial components in Ref. 11. ... Member AIAA. objective of the project that led to this paper was the develop- ment of a methodology for comparison of liquid and solid propulsion systems (or, in fact, any two candidate systems). ...doi:10.2514/3.26437 fatcat:kaxhzeww7zgsxhdcqmephxhjxe
2009 8th International Conference on Reliability, Maintainability and Safety
One approach is defining a lower percentile of system reliability distribution and using this lower-bound limit as the objective function to be maximized. ... Finally, we will review a new approach where the objective function is to minimize the coefficient of variation of the system reliability estimate with respect to a minimum system reliability constraint ... Coit and Smith (1998) define a lower percentile of the system reliability distribution or failure time distribution, and use this lower-bound limit as the objective function for reliability maximization ...doi:10.1109/icrms.2009.5270240 fatcat:by22x2mjynd57igd5gceejdtqe
Secondly, with fiducial approaches, approximate lower fiducial limits for the reliability of a series system are derived.” Lai K. Chan (London, Ont.) Hamdan, M. A.; Jensen, D. R. ... First, approximate lower confidence limits for the reliability of a single component, which are more accurate than those of Grubbs, are given using Pearson’s approximate chi-square. ...
Authors' objectives To evaluate the tolerability and liver safety profiles of systemic antifungal agents commonly used for the treatment of invasive fungal infections. ... For rare outcomes, the lower bounds of the 95% CI were set to be no smaller than zero. ... Methods of synthesis Summary cumulative incidence rates and 95% confidence intervals (CIs) were estimated using the maximum likelihood method and beta-binomial method and used to account for heterogeneity ...doi:10.1128/aac.01657-09 pmid:20308378 pmcid:PMC2876415 fatcat:dafbilvahbhpbcepgvx4wtz53a
In this article, we examine several methods for estimating two-tailed recall confidence intervals. ... Where document sets are too large for exhaustive relevance assessment, recall can be estimated by assessing a random sample of documents; but an indication of the reliability of this estimate is also required ... ACKNOWLEDGMENTS The author thanks Doug Oard, Dave Lewis, and Eric Slud for their perceptive suggestions; and Mossaab Bagdouri for observing the anomalous behaviour of the most-conservative prior for sample ...arXiv:1202.2880v4 fatcat:dsvsslztcbcftlait2obnt6kyu
Under very mild conditions, the method also guarantees a certain confidence level for a given relative estimation error, provided that does not exceed a maximum value. ... He is a coauthor of two textbooks on CDMA cellular systems, and has published several papers in the fields of CDMA system capacity and power control. ... Harremoës for providing some of the references, and J. Grajal for helpful discussions. ...doi:10.1109/tcomm.2005.863780 fatcat:b44gohd7lzgrbdad4mj563vkxi
Kefei Li, and Yoann Lahorgue for their helpful contributions to this work. ... Following this, the methodology for assessing the binomial distribution of the number of failed components before replacement is developed. A network modeled as a series system is considered. ... for system analysis. ...doi:10.1111/j.1467-8667.2009.00603.x fatcat:bi6oomidbzdslmf2ipae2htkna
As a service of the European Commission, the JRC functions as a reference centre of science and technology for the Union. ... Acknowledgements The authors would like to express their thanks to the following individuals for reviewing earlier drafts of this paper and for providing very valuable comments. ... System Reliability Assessment". ...doi:10.1784/insi.2011.53.12.652 fatcat:ws5e4qeda5ab5gywmjoribvcwa
Abstruct-A method for rapid visual recognition of personal identity is described, based on the failure of a statistical test of independence. ... Statistical decision theory generates identification decisions from Exclusive-OR comparisons of complete iris codes at the rate of 4000 per second, including calculation of decision confidence levels. ... Seeking to improve on the system of French physician Alphonse Bertillon for classifying convicts into one of 81 categories, Galton devised a series of springloaded "mechanical selectors" for facial measurements ...doi:10.1109/34.244676 fatcat:bijqzqqyuzgp3izfamtvkkgpyu
International Encyclopedia of Statistical Science
We present a concise overview of imprecise reliability, particularly focussing on reliability theory with uncertainty quantified via lower and upper probabilities. ... We discuss the main approaches and opportunities of the theory, we include references to guide further study, and we briefly discuss some research challenges. ... Foundations of NPI, including proofs of its consistency in theory of interval probability, are presented in  , an overview with detailed comparison to so-called 'objective Bayesian methods' is given ...doi:10.1007/978-3-642-04898-2_297 fatcat:c3yjhfspdrgptk5p6emfj6swtq
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