Results 1 to 10 of about 14,783,684 (194)
Zhejiang dianliRelay protection devices contain numerous electronic components， and environmental factors such as temperature， humidity， and vibration can impact their reliability.
GONG Jie +3 more
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Mathematics, 2023 In this article, four new families named as Weibull extended exponentiated-X (WEE-X), Lomax extended exponentiated-X (LEE-X), Logistic extended exponentiated-X (LGCEE-X), and Burr III extended exponentiated-X (BIIIEE-X) with their quantile functions are ...
Sajid Hussain +3 more
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Testing homogeneity in Weibull-regression models
Biometrical Journal, 2005 In survival studies with families or geographical units it may be of interest testing whether such groups are homogeneous for given explanatory variables. In this paper we consider score type tests for group homogeneity based on a mixing model in which the group effect is modelled as a random variable.
Bolfarine, Heleno, Valença, Dione M.
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Alexandria Engineering JournalProbability distributions are very important in describing practical phenomena. Among the available probability distributions, the three-parameter generalized inverse Weibull (for short “GI-Weibull”) model has very useful applications in reliability ...
Mohammed AbaOud, Muqrin A. Almuqrin
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Mathematics, 2022 The hybrid Weibull distribution model can describe the failure rules of electromechanical products more accurately than the single Weibull distribution model, and it can improve the accuracy of reliability analysis.
Xiaowei Dong +6 more
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Weibull Model Allowing Nearly Instantaneous Failures [PDF]
Journal of Applied Mathematics and Decision Sciences, 2007 A generalized Weibull model that allows instantaneous or early failures is modified so that the model can be expressed as a mixture of the uniform distribution and the Weibull distribution. Properties of the resulting distribution are derived; in particular, the probability density function, survival function, and the hazard rate function are ...
C. D. Lai +3 more
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MethodsXThe Weibull regression model is a regression model derived from the Weibull distribution, where the Weibull distribution is influenced by covariates. In this study, parameter estimation for the Weibull regression model was conducted using the Maximum ...
Suyitno +3 more
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Reliability Analysis of Switches and Crossings – A Case Study in Swedish Railway [PDF]
International Journal of Railway Research, 2017 It is reported that switches and crossings (S&C) are one of the subsystems that cause the most delays on Swedish Railways while accounting for at least 13% of maintenance costs.
Behzad Ghodrati +2 more
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An Alternative to the Exponential and Weibull Reliability Models
IEEE Access, 2022 The two reliability models most widely used in engineering applications are the exponential and the Weibull. Both models are deficient because their failure rates do not conform to the bathtub curve nor specify the infant mortality period. In addition, Weibull applications require lifetime data which entails testing or field observations and is usually
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To Determine the Prognostic Factors in Esophageal Cancer using Log-Logistic Regression Model in Iran
مجله اپیدمیولوژی ایران, 2011 Background and Objectives: Each year almost 400,000 people are diagnosed with oesophageal cancer worldwide. Wide variation in incidence has been reported both between countries and in different ethnic groups and populations within a country.
MR Ghadimi +5 more
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