1) obscrved failure rate
故障率实测值
2) constant failure rate ,CFR
常值故障率
3) decreasing failure rate ,DFR
初值故障率
4) fault detection rate
故障检测率
1.
By diagnosing intermittent fault, BIT with the method is better than that of two-state method in reducing false alarm rate as well as increasing fault detection rate.
与传统两状态方法相比,基于三状态方法的BIT通过诊断间歇故障,不仅有效地抑制间歇故障引起的虚警,而且还能提高故障检测率。
2.
Among various SRGMs, two most important factors which affect the accuracy of reliability evaluation and prediction are the number of initial faults and the fault detection rate (FDR).
影响软件可靠性增长模型评估和预测准确性的最重要的两个因素是软件中隐藏的初始故障数和故障检测率。
3.
A general NHPP model is proposed, which considers imperfect software debugging, time-dependent fault detection rate, and time-dependent fault removal efficiency.
NHPP类软件可靠性增长模型已经成为软件可靠性工程实践中非常成功的工具,从某些模型的一些共同特征出发,研究了NHPP类软件可靠性增长模型的有限通用框架,提出了一个既考虑软件测试的不完美性、故障检测率随时间的变化,又考虑了故障改正效率随时间变化的NHPP类软件可靠性增长模型框架。
5) FDR
故障检测率
1.
How to reduce FAR without reducing FDR is a difficult problem that needs to solve.
BIT虚警率高阻碍了BIT效能的充分发挥和更广泛、更深入的应用,如何在故障检测率一定的条件下,降低虚警率将成为一个亟待解决的问题。
6) failure rate forecasting
故障率预测
1.
Research on failure rate forecasting method based on ARMA model;
基于ARMA模型的故障率预测方法研究
补充资料:净现值率
分子式:
CAS号:
性质: 净现值与投资现值的比率。单位投资现值获得的净现值,表示单位投资除获得符合设定折现率要求的净收益外,还可获得的超额净收益。净现值率常用于有资金约束条件下多个方案的排队和优选。
CAS号:
性质: 净现值与投资现值的比率。单位投资现值获得的净现值,表示单位投资除获得符合设定折现率要求的净收益外,还可获得的超额净收益。净现值率常用于有资金约束条件下多个方案的排队和优选。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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