Results 11 to 20 of about 323,983 (267)

Rates of Convergence in Laplace’s Integrals and Sums and Conditional Central Limit Theorems

open access: yesMathematics, 2020
We obtained the exact estimates for the error terms in Laplace’s integrals and sums implying the corresponding estimates for the related laws of large number and central limit theorems including the large deviations approximation.
Vassili N. Kolokoltsov
doaj   +1 more source

Soil texture analysis revisited: Removal of organic matter matters more than ever. [PDF]

open access: yesPLoS ONE, 2017
Exact estimates of soil clay (
Johannes Lund Jensen   +4 more
doaj   +1 more source

Estimation of Parameters of Lomax Distribution Based on Record Values [PDF]

open access: yesThe Egyptian Statistical Journal, 2001
In this paper, we derive exact explicit expressions for the single and double moments of the upper record values from Lomax distribution. We then use these expressions to compute t?
Nagi Abd El-Hakim   +2 more
doaj   +1 more source

Probabilistic linkage of multiple data sources for estimating prevalence of problem drug users in England in 2018/19.

open access: yesInternational Journal of Population Data Science, 2022
Objectives Problem drug use (PDU) prevalence is an essential part of evidence base to formulate policy, inform service provision, and assess interventions. Opiate and crack use, particularly injecting, is associated with infectious diseases.
Abdelmajid Djennad   +3 more
doaj   +1 more source

On the problem of determining the parameter of an elliptic equation in a Banach space

open access: yesNonlinear Analysis, 2014
The boundary value problem of determining the parameter of an elliptic equation -u''(t)+Au(t)=f(t)+p (0⩽t⩽T), u(0)=φ, u(T)=ψ, u(λ)=ξ ...
Allaberen Ashyralyev   +1 more
doaj   +1 more source

Two approximation methods for fractional order Pseudo-Parabolic differential equations

open access: yesAlexandria Engineering Journal, 2022
In this study, fractional order pseudo-parabolic partial differential equation defined by Caputo derivative is investigated with initial-boundary conditions. Modified double Laplace decomposition method is used to find the exact solution of this equation.
Mahmut. Modanli   +4 more
doaj   +1 more source

A Second-Order Accurate Numerical Approximation for a Two-Sided Space-Fractional Diffusion Equation

open access: yesMathematics, 2023
In this paper, we investigate a practical numerical method for solving a one-dimensional two-sided space-fractional diffusion equation with variable coefficients in a finite domain, which is based on the classical Crank-Nicolson (CN) method combined with
Taohua Liu   +3 more
doaj   +1 more source

Inferences for Generalized Pareto Distribution Based on Progressive First-Failure Censoring Scheme

open access: yesComplexity, 2021
In this article, we consider estimation of the parameters of a generalized Pareto distribution and some lifetime indices such as those relating to reliability and hazard rate functions when the failure data are progressive first-failure censored.
Rashad M. El-Sagheer   +2 more
doaj   +1 more source

Existence theories and exact solutions of nonlinear PDEs dominated by singularities and time noise

open access: yesNonlinear Analysis, 2023
The current research deals with the exact solutions of the nonlinear partial differential equations having two important difficulties, that is, the coefficient singularities and the stochastic function (white noise).
Muhammad Ozair Ahmed   +5 more
doaj   +1 more source

CONDITIONS FOR EXACT CAVALIERI ESTIMATION

open access: yesImage Analysis & Stereology, 2014
Exact Cavalieri estimation amounts to zero variance estimation of an integral with systematic observations along a sampling axis. A sufficient condition is given, both in the continuous and the discrete cases, for exact Cavalieri sampling. The conclusions suggest improvements on the current stereological application of fractionator-type sampling.
Cruz-Orive, Luis M.   +2 more
openaire   +4 more sources

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