نتایج جستجو برای: use failure rate
تعداد نتایج: 2804313 فیلتر نتایج به سال:
abstract deviation or in other words committing a crime is literally a social problem. this research that was conducted in 1389 and 1390 has tried to investigate the causes of crimes committed by young male inmates qazvin central prison and effective variables on their tendency to deviation. accordingly after collecting theoretical framework and offering theoretical model including both hirsch...
Introduction: Risk assessment of hazardous processes is the priority of risk management. Layer of protection analysis (LOPA) is one of the most popular methods used for risk assessment. Due to the insufficient information or uncertainty in failure rates (PFD) of protective layers, risk assessment based on the conventional LOPA can result in error in calculations. In this study, we tried to use ...
Heart failure is a common clinical condition associated with high morbidity and mortality rate despite significant improvements in pharmacotherapy and implementation of medical procedures. Patients with heart failure are at an increased risk of developing arterial and venous thrombosis, which contribute to the high rate of adverse events and fatal outcomes. Many heart failure patients routinely...
the aim of this study is to show that the measures derived from electrocardiogram (ecg) signals many a time perform better than the same measures obtained from heart rate (hr) signals. a comparison was made to investigate how far the nonlinear symbolic dynamics approach helps to characterize the nonlinear properties of ecg signals and hr signals, and thereby discriminate between normal and cong...
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...
Dear editor In a recent issue of the journal, Dastani et al. (2019) evaluate the effects of curcumin on the prevention of atrial and ventricular arrhythmias and heart failure in patients with unstable angina. Despite the fact that the topic was interesting, there were some defects and we wish to call to your attention important factual issues in this publication. The most cr...
In recent years the use of titanium implant have received special attention in dentistry. In 1994 an implant clinic has established in Faculty of Dentistry, Tehran University of Medical Science and since then, 289 implants have been placed for 120 patients. In literatures a success rate of 93% and 84% of implants placed in mandible and maxilla respectively, have been reported. The purpose of th...
acute renal failure (arf) is defined as a sudden and continuous decrease of glomerular function associated with azotemia, and may be followed by decreased urinary output. there is a high incidence of arf in icu patients with a high mortality rate. many factors can promote arf development or influence its outcome. this study was done to assess the incidence, risk factors, outcome and treatment o...
In the context of our research program we addressed the question whether or not requirements documents contain information about system level properties that can be exploited to automatically create assertions for run-time checks of these properties. In this technical report we define the concept of property template and report details on the studies we carried out to address this question. The...
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