Results 31 to 40 of about 452,873 (269)

A uniformly convergent numerical scheme for solving singularly perturbed differential equations with large spatial delay

open access: yesSN Applied Sciences, 2022
In this study, a parameter-uniform numerical scheme is built and analyzed to treat a singularly perturbed parabolic differential equation involving large spatial delay.
Ababi Hailu Ejere   +3 more
doaj   +1 more source

A robust higher-order fitted mesh numerical method for solving singularly perturbed parabolic reaction-diffusion problems

open access: yesResults in Applied Mathematics, 2023
In this study, a robust higher-order numerical method for solving singularly perturbed parabolic reaction-diffusion problems is presented. The Crank-Nicolson method is applied to discretize the time derivative on a uniform mesh.
Gemechis File Duressa   +2 more
doaj   +1 more source

Particle-kernel estimation of the filter density in state-space models [PDF]

open access: yes, 2014
Sequential Monte Carlo (SMC) methods, also known as particle filters, are simulation-based recursive algorithms for the approximation of the a posteriori probability measures generated by state-space dynamical models.
Crisan, Dan, Míguez, Joaquín
core   +4 more sources

Local linear modelling of the conditional distribution function for functional ergodic data

open access: yesMathematical Modelling and Analysis, 2022
The focus of functional data analysis has been mostly on independent functional observations. It is therefore hoped that the present contribution will provide an informative account of a useful approach that merges the ideas of the ergodic theory and ...
Somia Ayad   +3 more
doaj   +1 more source

Almost Sure Convergence of Uniform Transport Processes to Brownian Motion

open access: yesThe Annals of Mathematical Statistics, 1971
Let $x_n(t)$ be the position of a particle in one dimension that switches between uniform velocities $+n$ and $-n$ at the jump times of a Poisson process with intensity $n^2$. In this note are constructed realizations of the processes $x_n(t)$ that converge almost surely to Brownian motion, uniformly on the unit time interval.
Griego, Richard J.   +2 more
openaire   +2 more sources

Strong uniform consistency rates of conditional quantile estimation in the single functional index model under random censorship

open access: yesDependence Modeling, 2018
The main objective of this paper is to non-parametrically estimate the quantiles of a conditional distribution in the censorship model when the sample is considered as an -mixing sequence.
Kadiri Nadia   +2 more
doaj   +1 more source

Discontinuous generalized double-almost-periodic functions on almost-complete-closed time scales

open access: yesBoundary Value Problems, 2019
In this paper, we introduce the concept of almost-complete-closed time scales (ACCTS) that allows independent variables of functions to possess almost-periodicity under translations.
Chao Wang   +3 more
doaj   +1 more source

A Numerical Scheme for Invariant Distributions of Constrained Diffusions [PDF]

open access: yes, 2011
Reflected diffusions in polyhedral domains are commonly used as approximate models for stochastic processing networks in heavy traffic. Stationary distributions of such models give useful information on the steady state performance of the corresponding ...
A Numerical   +11 more
core   +6 more sources

On strong almost convergence and uniform statistical convergence

open access: yesActa et Commentationes Universitatis Tartuensis de Mathematica, 1998
The definition of strong almost convergence is extended to a definition of strong almost convergence with respect to an Orlicz function. It is shown that every bounded uniformly statistically null sequence is also strongly almost convergent to zero with respect to any Orlicz function.
openaire   +2 more sources

Almost periodic functions in terms of Bohr’s equivalence relation [PDF]

open access: yes, 2017
In this paper we introduce an equivalence relation on the classes of almost periodic functions of a real or complex variable which is used to refine Bochner’s result that characterizes these spaces of functions.
Sepulcre, Juan Matias, Vidal, Tomás
core   +3 more sources

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