Results 1 to 10 of about 40,424 (162)

ADAPTIVE TIME-STEP CONTROL FOR THE MODAL METHOD TO INTEGRATE THE MULTIGROUP NEUTRON DIFFUSION EQUATION [PDF]

open access: yesEPJ Web of Conferences, 2021
The distribution of the power inside a reactor core can be described by the time dependent multigroup neutron diffusion equation. One of the approaches to integrate this time-dependent equation is the modal method, that assumes that the solution can be ...
Carreño A.   +3 more
doaj   +1 more source

Variance Estimation in the Presence of Measurement Errors Under Stratified Random Sampling

open access: yesRevstat Statistical Journal, 2021
This study focuses on the estimation of population variance of study variable in stratified random sampling using auxiliary information when the observations are contaminated by measurement errors.
Neha Singh   +2 more
doaj   +1 more source

A Simulation-Based Study for Progressive Estimation of Population Mean through Traditional and Nontraditional Measures in Stratified Random Sampling

open access: yesJournal of Mathematics, 2021
This study suggests a new optimal family of exponential-type estimators for estimating population mean in stratified random sampling. These estimators are based on the traditional and nontraditional measures of auxiliary information.
Maria Javed   +3 more
doaj   +1 more source

Minimum Expected Loss Estimators of The Parameters of the Inverse Gaussian Distribution [PDF]

open access: yesThe Egyptian Statistical Journal, 1990
The parameters of the inverse Gaussian distribution are estimated by assuming a weighted squared-error loss function and minimizing the corresponding expected loss with respect to the posterior distribution.
Mohamed Mahmoud
doaj   +1 more source

Oscillation in a posteriori error estimation [PDF]

open access: yesNumerische Mathematik, 2021
AbstractIn a posteriori error analysis, the relationship between error and estimator is usually spoiled by so-called oscillation terms, which cannot be bounded by the error. In order to remedy, we devise a new approach where the oscillation has the following two properties.
Christian Kreuzer, Andreas Veeser
openaire   +5 more sources

Bayesian Estimation of the Exponentiated Fréchet Distribution Parameters [PDF]

open access: yesThe Egyptian Statistical Journal, 2021
This article discusses the Bayesian estimators of the parameters of Exponentiated Fréchet distribution under squared error loss function, elative error loss function and LINEX loss function using the non-informative and uniform priors. The performance of
Amel Abd-El-Monem
doaj   +1 more source

Statistical Inference for the Heteroscedastic Partially Linear Varying-Coefficient Errors-in-Variables Model with Missing Censoring Indicators

open access: yesDiscrete Dynamics in Nature and Society, 2021
In this paper, we focus on heteroscedastic partially linear varying-coefficient errors-in-variables models under right-censored data with censoring indicators missing at random.
Yuye Zou, Chengxin Wu
doaj   +1 more source

Inference on P(X < Y) in Bivariate Lomax model based on progressive type II censoring.

open access: yesPLoS ONE, 2022
This article considers the estimation of the stress-strength reliability parameter, θ = P(X < Y), when both the stress (X) and the strength (Y) are dependent random variables from a Bivariate Lomax distribution based on a progressive type II censored ...
Amal Helu, Hani Samawi
doaj   +2 more sources

Modified Liu estimators in the linear regression model: An application to Tobacco data.

open access: yesPLoS ONE, 2021
BackgroundThe problem of multicollinearity in multiple linear regression models arises when the predictor variables are correlated among each other. The variance of the ordinary least squared estimator become unstable in such situation.
Iqra Babar   +5 more
doaj   +1 more source

On the Estimation of Parameters and Reliability Functions of a New Two-Parameter Lifetime Distribution based on Type II Censoring

open access: yesStatistica, 2021
We consider here the generalization of the Bilal distribution proposed by Abd-Elrahman (2017) by zeroing in on two measures of reliability, R(t) and P, based on type II censoring. We obtain point estimators namely, λ and θ, of the above said distribution,
Ajit Chaturvedi   +2 more
doaj   +1 more source

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