The rcd has three failure modes the reject - operation , the wrong - operation and the malfunction of handle . the reliability check should consider this characteristic and these failure modes . the success ratio r and the failure ratio a are applied as reliability criterion of rcd 首先，针对漏电保护器不频繁动作的保护电器的工作特点以及发生拒动、误动故障及操作故障三类故障的失效模式，采用保护成功率r和失效率作为可靠性特征量，并给出了可靠性特征量的估计方法。
From top level event fault , every level events " ineffective rate and unreliability limit are calculated and sorted by maximum probability of occurred faults in each level , the sequence of the bottom - event is arranged , and then the most probably happened bottom - event correspond to the specific top - event is found rapidly 从顶事件开始，计算各级故障的失效率和不可靠度，按照各级故障发生的最大概率，排列出底事件序列，迅速找到某一顶事件最可能对应的底事件，实现智能故障分析与诊断。
And then , it gives some useful approaches of program transformation to reduce cache conflicts , and concludes three accessing modes in multi - media applications to prepare for the further study of stream cache prefetching technologies . this paper also introduces a data allocation approach to scratch - pad sram , with the purpose of improving cache hit rate 讨论了常用的提高数据时空局部性的程序变换方法以降低cache失效率,并针对多媒体领域应用程序的特点,总结了三种多媒体常见存储访问模式,为进一步研究并向dpc存储系统加入流cache的预取技术奠定了基础。
In reliability theory , failure rate function is a kind of quite importa - nt characteristic function , because it shows to be failure probability in condition that it will be regular until it operates at moment t . so it is , f - ailure rate function can decide failure intensity at each moment and be instantaneous characteristic quantity of reliability . from this , failure ta - te function can be thought to have visual meanings and be easily obtained 在可靠性数学理论中，失效率是一类很重要的函数。它表示产品工作到时刻t仍然正常的条件下，在将来单位时间内失效的概率，即它能决定每一时刻的失效的强度。由此可以看出它有很好的直观意义且易获得，并且它能够唯一确定一维寿命分布。
In addition , adopting genetic algorithm to search the parameters of parametric estimation method is put forward . for the function form assumption of parametric estimation method is subjective , adopting different function form to construct production frontier is analyzed , the concepts such as tle ( total loss of efficiency ) and ale ( average loss of efficiency ) etc . are put forward and the empirical research is done 2 .文中提出了采用遗传算法寻求生产前沿面参数的方法，针对参数生产前沿面函数形式假设偏主观性的特点，文中对不同生产函数形式假设构造参数生产前沿面的优劣进行了研究，定义了总失效率、平均失效率等概念。
