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,針對(duì)漏電保護(hù)器不頻繁動(dòng)作的保護(hù)電器的工作特點(diǎn)以及發(fā)生拒動(dòng)、誤動(dòng)故障及操作故障三類故障的失效模式,采用保護(hù)成功率r和失效率作為可靠性特征量,并給出了可靠性特征量的估計(jì)方法。
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,針對(duì)剩余電流動(dòng)作保護(hù)器是不頻繁動(dòng)作的保護(hù)電器的工作特點(diǎn)以及發(fā)生拒動(dòng)、誤動(dòng)故障及操作故障三類故障的失效模式,提出了采用保護(hù)成功率及和操作故障率作為可靠性特征量,并提出了可靠性特征量的估計(jì)方法。
From output point , mainly in success ? failure ratio , economy effect . research suggests : imitation innovation is lower than initiative innovation in success ? failure ratio , but is not inferior to initiative innovation in economy effect , so we can see imitation innovation has some competition in output effect 在創(chuàng)新產(chǎn)出方面,主要考察比較了模仿創(chuàng)新與率先創(chuàng)新的成敗率、經(jīng)濟(jì)效果等方面。實(shí)證研究表明,模仿創(chuàng)新在成敗率方面較率先創(chuàng)新更低,而在經(jīng)濟(jì)效果方面并不劣于率先創(chuàng)新,說(shuō)明模仿創(chuàng)新在產(chǎn)出效果方面有一定的競(jìng)爭(zhēng)力。
Sometimes it will succeed , sometimes fail and even with the failure ratio higher than 50 % . therefore , the decision maker of enterprises should be always treading on thin ice when making policy to merge . they should think over whether they can reach the expected goal through the merging . the most important thing is that they should predict , control and evade risk in the course of merger and make it a security syetem with expected results 因此企業(yè)決策者在決策一項(xiàng)企業(yè)兼并時(shí),要有一種如履薄冰的心態(tài),企業(yè)兼并能否實(shí)現(xiàn)預(yù)期目的,更重要的是要能在企業(yè)兼并過(guò)程中預(yù)測(cè)、控制、規(guī)避兼并風(fēng)險(xiǎn),使之成為兼并達(dá)到預(yù)期效果的保障體系。
Furthermore , this paper provides several forms of failure ratio in the operating phase taking the difference between the testing profile and the operating profile into account according to the concepts of the testing reliability and the operating reliability , then analyzes theoretically the difference between the testing reliability and the operating reliability based on the changing trends that the failure of decreasing and first increasing and the decreasing of the failure ratio , and makes a research on the influence of the two types of reliability on the software releasing time 在此基礎(chǔ)上給出了考慮測(cè)試剖面與運(yùn)行剖面差別的幾種運(yùn)行階段失效率的形式,然后根據(jù)失效率遞減的和先增后減的變化趨勢(shì),從理論上分析了測(cè)試可靠性與運(yùn)行可靠性的差別,研究這兩種可靠度對(duì)軟件發(fā)布時(shí)間的影響。絕大多數(shù)軟件可靠性增長(zhǎng)模型都假設(shè)軟件故障服從同一種分布。