The present paper is concerned with reliability economics, considering a certain performance-per-cost criterion for coherent and mixed systems, as introduced in [Dugas, M.R. & Samaniego, F.J. (2007). On optimal system designs in reliability-economics frameworks. Naval Research Logistics 54, 568–582]. We first present a new comparison result for performance-per-cost of systems with independent and identically distributed component lifetimes under certain stochastic orderings. We then consider optimization of the performance-per-cost criterion, first reconsidering and refining results from the above cited paper, and then considering mixtures of given subsets of coherent systems.

中文翻译：

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相干和混合系统的单位成本性能比较

本论文关注的是可靠性经济学，考虑了在 [Dugas, MR & Samaniego, FJ (2007) 中介绍的相干和混合系统的特定性能/成本标准。关于可靠性经济学框架中的最优系统设计。海军研究后勤54, 568–582]。我们首先提出了在某些随机排序下具有独立且相同分布的组件寿命的系统的单位成本性能的新比较结果。然后，我们考虑优化每成本性能标准，首先重新考虑和改进上述论文的结果，然后考虑给定相干系统子集的混合。