نتایج جستجو برای: use failure rate
تعداد نتایج: 2804313 فیلتر نتایج به سال:
iv abstract this study examined the linguistic behaviors of two iranian efl teachers each of them teaching learners of two similar proficiency levels, a beginner level and an intermediate level, to investigate the relationship between the learners proficiency levels and the amounts and purposes for l1 use by the two teachers. the study was carried out to investigate whether there were differe...
A quarter of Iran’s area is made from deserts with radiation exceeding . Also, the solar radiation of many parts of Iran is above the international average. So, the use of solar energy in the power system has increased in recent years. On the other hand, the success or failure of a project relates to the economic fluctuations of the country. In this paper, the effects of currency price sudden...
Utilizing the gathered failure data and failure interval data from Tabas coal mine in two years, this paper discusses the reliability of powered supports. The data sets were investigated using statistical procedures and in two levels: the existence of trend and serial correlation. The results show that the powered supports follow the Gamma reliability function. The reliability of the machine de...
In this paper the exact determination of the distribution of stopping variable, the moment and risk of sequential estimator of the failure rate of exponential distribution, under convex boundary is obtained. The corresponding Poisson Process is used to derive the exact distribution of stopping variable of sequential estimator of the failure rate. In the end the exact values of mean and risk ...
Many classic age replacement policies rely on the assumption that the time-to-failure distribution has an increasing failure rate. In addition, many commonly used probability distributions possess the increasing failure rate property, including the Normal distribution and the Weibull distribution with shape parameter greater than one. However, significant recent research has considered how real...
background: we aimed to analyze the effect of nursing strategies on patients with chronic renal failure (crf) undergoing maintenance hemodialysis (mhd) treatment by puncturing on arteriovenous fistula (avf). methods: ninety-two patients with chronic renal failure undergoing maintenance hemodialysis (mhd) between jan 2014 and jan 2015 were included in the study (all undergoing avf, dialysis for ...
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