Results 11 to 20 of about 4,907 (238)

Proportional factors estimation in an IHCP [PDF]

open access: yesJournal of Hyperstructures, 2014
In this paper, a numerical scheme is developed based on mollification method and space marching scheme for solving an inverse heat conduction problem. The proposed inverse problem contains the estimation of two unknown functions at the boundaries named ...
Morteza Garshasbi, Hatef Dastour
doaj   +1 more source

Identifying a Space-Dependent Source Term and the Initial Value in a Time Fractional Diffusion-Wave Equation

open access: yesMathematics, 2023
This paper is focused on the inverse problem of identifying the space-dependent source function and initial value of the time fractional nonhomogeneous diffusion-wave equation from noisy final time measured data in a multi-dimensional case.
Xianli Lv, Xiufang Feng
doaj   +1 more source

Numerical Method for a Cauchy Problem for Multi-Dimensional Laplace Equation with Bilateral Exponential Kernel

open access: yesMathematics, 2023
This study examined a Cauchy problem for a multi-dimensional Laplace equation with mixed boundary. This problem is severely ill-posed in the sense of Hadamard.
Xianli Lv, Xiufang Feng
doaj   +1 more source

Mollification formulas and implicit smoothing [PDF]

open access: yesAdvances in Computational Mathematics, 2006
The authors develop some mollification formulas involving convolutions between popular radial basis function \(f\), and suitable mollifiers \(k\). Polyharmonic splines, scaled Bessel kernels and compactly supported basic functions are considered. An application which motivated the development of the formulas is a technique called implicit smoothing ...
Beatson, R. K., Bui, H. Q.
openaire   +2 more sources

A Circumstantial Review on Ride-sharing Profile in Dhaka City [PDF]

open access: yesComputational Engineering and Physical Modeling, 2020
The ride-sharing profile has gotten a decision to the horde of Dhaka City in the transportation field because of its broadened habits in transport offices.
Hasib Tusher, Arif Hasnat, Faysal Rahman
doaj   +1 more source

Mollification in strongly Lipschitz domains with application to continuous and discrete De Rham complex [PDF]

open access: yes, 2015
We construct mollification operators in strongly Lipschitz domains that do not invoke non-trivial extensions, are $L^p$ stable for any real number $p\in[1,\infty]$, and commute with the differential operators $\nabla$, $\nabla{\times}$, and $\nabla{\cdot}
Ern, Alexandre, Guermond, Jean-Luc
core   +5 more sources

A Two Dimensional Discrete Mollification Operator and the Numerical Solution of an Inverse Source Problem

open access: yesAxioms, 2018
We consider a two-dimensional time fractional diffusion equation and address the important inverse problem consisting of the identification of an ingredient in the source term. The fractional derivative is in the sense of Caputo.
Manuel D. Echeverry, Carlos E. Mejía
doaj   +1 more source

The weighted reverse Poincaré-type estimates for the difference of two convex vectors

open access: yesJournal of Inequalities and Applications, 2016
In this paper we develop Caccioppoli-type estimates for arbitrary convex vectors and the vectors having both convex and concave arguments. To do this, we first develop these estimates for smooth convex vectors and then, through mollification, extend the ...
Muhammad Shoaib Saleem   +4 more
doaj   +1 more source

Alternative proof and interpretations for a recent state-dependent importance sampling scheme [PDF]

open access: yes, 2007
Recently, a state-dependent change of measure for simulating overflows in the two-node tandem queue was proposed by Dupuis et al. (Ann. Appl. Probab. 17(4):1306–1346, 2007), together with a proof of its asymptotic optimality.
Boer, Pieter-Tjerk de   +1 more
core   +3 more sources

A Mollification Regularization Method for the Inverse Source Problem for a Time Fractional Diffusion Equation

open access: yesMathematics, 2019
We consider a time-fractional diffusion equation for an inverse problem to determine an unknown source term, whereby the input data is obtained at a certain time. In general, the inverse problems are ill-posed in the sense of Hadamard. Therefore, in this
Le Dinh Long   +3 more
doaj   +1 more source

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