نتایج جستجو برای: reliability centered maintenancr
تعداد نتایج: 191702 فیلتر نتایج به سال:
Visuri, Koivunen and Oja (2003) proposed and illustrated the use of the affine equivariant rank covariance matrix (RCM) in classical multivariate inference problems. The RCM was shown to be asymptotically multinormal but explicit formulas for the limiting variances and covariances were not given. In this paper the influence functions and the limiting variances and covariances of the RCM and the...
Turnouts are probably the most important infrastructure elements of the railway system because of its effect on the system safety, reliability and quality of the service. In this paper, a predictive maintenance system in point mechanism, called RCM, has been implemented for increasing the quality service. RCM is based on the integration of the two other types of maintenance techniques, namely R...
The vulnerability of human populations and natural systems and their ability to adapt to extreme events and climate change vary with geographic regions and populations. Regional climate models (RCM), composed by an atmospheric component coupled to a land surface scheme and driven over ocean areas by prescribed sea surface temperature, have been developed to produce fine scale regional climate c...
Estimating questions’ difficulty levels is an important task in community question answering (CQA) services. Previous studies propose to solve this problem based on the question-user comparisons extracted from the question answering threads. However, they suffer from data sparseness problem as each question only gets a limited number of comparisons. Moreover, they cannot handle newly posted que...
Benefits In the past, preventive maintenance was performed without any guidance or regard for safety or cost concerns, as long as systems performed their functions. The primary reason for the development of RCM was to implement a preventive maintenance strategy that could adequately address system availability and safety at the lowest possible cost. The RCM process answers and directs preventiv...
For researches and information services of space weather, it is important to establish a comprehensive system which enables us to analyze observation and simulation data in an integrated manner. For this, we constructed recently a new computing environment called the “Space Weather Cloud Computing System” of the National Institute of Information and Communications Technology (NICT). Now, the Sp...
Chloride-induced corrosion of reinforced concrete is one of the main deterioration mechanisms leading to shortening of the service life of concrete structures. Therefore, assessment of the resistance of concrete to chloride ingress plays an important role in predicting the service life of such structures. The Rapid Chloride Migration (RCM) test is one of the accelerated test methods commonly us...
In the classical approach to determine how many spare parts to stock, the spare parts shortage costs or the minimum fill rate are a key factor. A difficulty with this approach lies in the estimation of these shortage costs or the determination of appropriate minimum fill rates. In an attempt to overcome this problem, we propose to use the data gathered in reliability centered maintenance studie...
Compact polarimetric (CP) data exploitation is currently of growing interest considering the new generation of such Synthetic Aperture Radar (SAR) systems. These systems offer target detection and classification capabilities comparable to those of polarimetric SARs (PolSAR) with less stringent requirements. A good example is the RADARSAT Constellation Mission (RCM). In this paper, some characte...
For proper management of life cycle of machines and manufacturing facilities, it is important to perform appropriate maintenance operations, and to keep machine status for better reuse and recycling opportunity. For this purpose, a virtual maintenance system is very effective, where facility life cycle model is constructed in computer, and reliability and availability of machines are predicted ...
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