Journal ArticleDOI
Component Redundancy Versus System Redundancy in Different Stochastic Orderings
Nil Kamal Hazra,Asok K. Nanda +1 more
TLDR
It is shown that redundancy at the component level is superior to that at the system level with respect to different stochastic orders, for different types of systems.Abstract:
Stochastic orders are useful to compare the lifetimes of two systems. We discuss both active redundancy as well as standby redundancy. We show that redundancy at the component level is superior to that at the system level with respect to different stochastic orders, for different types of systems.read more
Citations
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Journal ArticleDOI
Optimal allocation of active redundancies in weighted k-out-of-n systems
TL;DR: In this paper, the optimal allocation of active redundancies for weighted k-out-of-n systems is investigated for the case of one, two and multiple active redundancy in the sense of the usual stochastic order when the system is comprised of independent and heterogeneous components having different weights.
Journal ArticleDOI
Component and system active redundancies for coherent systems with dependent components
Journal ArticleDOI
Component Level Versus System Level $k$ -Out-of- $n$ Assembly Systems
Gaofeng Da,Weiyong Ding +1 more
TL;DR: From this result, some useful principles for assembling $K$ -out-of- $N$ -systems optimally are proposed.
Journal ArticleDOI
Allocation of a relevation in redundancy problems
Journal ArticleDOI
Allocation strategies of standby redundancies in series/parallel system
TL;DR: In this article, an optimal allocation of two standby redundancies in a two-component series/parallel system is discussed. But, the problem is not addressed in this paper.
References
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TL;DR: This paper presents a meta-analysis of the application of Signature-Based Closure, Preservation and Characterization Theorems to Network Reliability and its applications in Reliability Economics and Signature-based Analysis of System Lifetimes.
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Redundancy allocation of series-parallel systems using a variable neighborhood search algorithm
Yun-Chia Liang,Yi-Ching Chen +1 more
TL;DR: Results show that the variable neighborhood search method improves the performance of VND and provides a competitive solution quality at economically computational expense in comparison with the best-known heuristics including ant colony optimization, genetic algorithm, and tabu search.
Journal ArticleDOI
Log-concave and concave distributions in reliability
Debasis Sengupta,Asok K. Nanda +1 more
TL;DR: In this paper, the authors consider the class of log-concave distributions and the subclass of concave distributions, and examine the closure of these classes under a number of reliability operations, and provide sharp reliability bounds for nonmaintained and maintained units having life distribution belonging to these classes.
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