Results 11 to 20 of about 830,924 (267)

Stability estimate and regularization for a radially symmetric inverse heat conduction problem

open access: yesBoundary Value Problems, 2017
This paper investigates a radially symmetric inverse heat conduction problem, which determines the internal surface temperature distribution of the hollow sphere from measured data at the fixed location inside it. This is an inverse and ill-posed problem.
Wei Cheng
doaj   +1 more source

Optimal Convergence Analysis of Two-Level Nonconforming Finite Element Iterative Methods for 2D/3D MHD Equations

open access: yesEntropy, 2022
Several two-level iterative methods based on nonconforming finite element methods are applied for solving numerically the 2D/3D stationary incompressible MHD equations under different uniqueness conditions.
Haiyan Su, Jiali Xu, Xinlong Feng
doaj   +1 more source

Errors on errors – Estimating cosmological parameter covariance [PDF]

open access: yesProceedings of the International Astronomical Union, 2014
AbstractCurrent and forthcoming cosmological data analyses share the challenge of huge datasets alongside increasingly tight requirements on the precision and accuracy of extracted cosmological parameters. The community is becoming increasingly aware that these requirements not only apply to the central values of parameters but, equally important, also
Joachimi, Benjamin, Taylor, Andy
openaire   +2 more sources

Video Sensing of Nearshore Bathymetry Evolution with Error Estimate

open access: yesJournal of Marine Science and Engineering, 2019
Although coastal morphology results essentially from underwater sediment transports, the evolution of underwater beach profiles along the diverse coastlines of the world is still poorly documented.
Duong Hai Thuan   +3 more
doaj   +1 more source

Solving of the Inverse Boundary Value Problem for the Heat Conduction Equation in Two Intervals of Time

open access: yesAlgorithms, 2023
The boundary value problem, BVP, for the PDE heat equation is studied and explained in this article. The problem declaration comprises two intervals; the (0, T) is the first interval and labels the heating of the inside burning chamber, and the second (T,
Bashar Talib Al-Nuaimi   +5 more
doaj   +1 more source

Truncation error estimation for Newton–Cotes quadrature formulas

open access: yesLietuvos Matematikos Rinkinys, 2004
Theoretical and practical aspects of truncation error estimation for Newton–Cotes quadrature formulas are discussed in this paper.
Kostas Plukas, Danutė Plukienė
doaj   +1 more source

Explicit Integrating Factor Runge–Kutta Method for the Extended Fisher–Kolmogorov Equation

open access: yesMathematical and Computational Applications, 2023
The extended Fisher–Kolmogorov (EFK) equation is an important model for phase transitions and bistable phenomena. This paper presents some fast explicit numerical schemes based on the integrating factor Runge–Kutta method and the Fourier spectral method ...
Yanan Wang, Shuying Zhai
doaj   +1 more source

Picard-Reproducing Kernel Hilbert Space Method for Solving Generalized Singular Nonlinear Lane-Emden Type Equations

open access: yesMathematical Modelling and Analysis, 2015
An iterative method is discussed with respect to its effectiveness and capability of solving singular nonlinear Lane-Emden type equations using reproducing kernel Hilbert space method combined with the Picard iteration.
Babak Azarnavid   +2 more
doaj   +1 more source

A Space-Time Finite Element Method for the Fractional Ginzburg–Landau Equation

open access: yesFractal and Fractional, 2023
A fully discrete space-time finite element method for the fractional Ginzburg–Landau equation is developed, in which the discontinuous Galerkin finite element scheme is adopted in the temporal direction and the Galerkin finite element scheme is used in ...
Jincun Liu, Hong Li, Yang Liu
doaj   +1 more source

Convergence of a linearly extrapolated BDF2 finite element scheme for viscoelastic fluid flow

open access: yesBoundary Value Problems, 2017
The stability and convergence of a linearly extrapolated second order backward difference (BDF2-LE) time-stepping scheme for solving viscoelastic fluid flow in R d $\mathbb{R}^{d}$ , d = 2 , 3 $d=2,3$ , are presented in this paper.
Yunzhang Zhang, Chao Xu, Jiaquan Zhou
doaj   +1 more source

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