Results 31 to 40 of about 14,311,082 (276)

The reliability assessment of the electromagnetic valve of high-speed electric multiple units braking system based on two-parameter exponential distribution

open access: yesAdvances in Mechanical Engineering, 2016
In order to solve the reliability assessment of braking system component of high-speed electric multiple units, this article, based on two-parameter exponential distribution, provides the maximum likelihood estimation and Bayes estimation under a type-I ...
Jianwei Yang   +4 more
doaj   +1 more source

Statistical Inference of Generalized Time- Dependent Logistic Hazard Model [PDF]

open access: yesThe Egyptian Statistical Journal, 2018
In this paper ,we extend the generalized time-dependtent logistic hazard model (GTDL)proposed by Mackenzie (1996) by using  the hazard function of weibull distribution instead  of  the   baseline hazard function  as no form was assumed in this  model ...
Ahmed A. El-Sheikh   +2 more
doaj   +1 more source

Expanded Fréchet Model: Mathematical Properties, Copula, Different Estimation Methods, Applications and Validation Testing

open access: yesMathematics, 2020
The extreme value theory is expanded by proposing and studying a new version of the Fréchet model. Some new bivariate type extensions using Farlie–Gumbel–Morgenstern copula, modified Farlie–Gumbel–Morgenstern copula, Clayton copula, and Renyi’s entropy ...
Mukhtar M. Salah   +3 more
doaj   +1 more source

Comparative Study of Different Methods for Estimating Weibull Parameters: A Case Study on Jeju Island, South Korea

open access: yesEnergies, 2018
On Jeju Island, South Korea, an investigation was conducted to determine the best method for estimating Weibull parameters. Six methods commonly used in many fields of the wind energy industry were reviewed: the empirical, moment, graphical, energy ...
Dongbum Kang, Kyungnam Ko, Jongchul Huh
doaj   +1 more source

Warranty Claim Forecasting Based On Weighted Maximum Likelihood Estimation [PDF]

open access: yes, 2012
Warranty claims reported in recent months might carry more up-to-date information than those reported in earlier months. Using weighted maximum likelihood estimation for estimating model parameters might therefore lead to better performance of warranty ...
Akbarov, Artur   +3 more
core   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

MPI-PHYLIP: parallelizing computationally intensive phylogenetic analysis routines for the analysis of large protein families. [PDF]

open access: yesPLoS ONE, 2010
Phylogenetic study of protein sequences provides unique and valuable insights into the molecular and genetic basis of important medical and epidemiological problems as well as insights about the origins and development of physiological features in ...
Alexander J Ropelewski   +2 more
doaj   +1 more source

A New Family of Continuous Probability Distributions

open access: yesEntropy, 2021
In this paper, a new parametric compound G family of continuous probability distributions called the Poisson generalized exponential G (PGEG) family is derived and studied. Relevant mathematical properties are derived. Some new bivariate G families using
M. El-Morshedy   +4 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Estimation and Testing in One-Way ANOVA when the Errors are Skew-Normal

open access: yesRevista Colombiana de Estadística, 2015
We consider one-way analysis of variance (ANOVA) model when the error terms have skew- normal distribution. We obtain the estimators of the model parameters by using the maximum likelihood (ML) and the modified maximum likelihood (MML) methodologies (see,
NURI CELIK, BIRDAL SENOGLU, OLCAY ARSLAN
doaj   +1 more source

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