Results 21 to 30 of about 717,764 (281)

SUPG-Stabilized Virtual Element Method for Optimal Control Problem Governed by a Convection Dominated Diffusion Equation

open access: yesEntropy, 2021
In this paper, the streamline upwind/Petrov Galerkin (SUPG) stabilized virtual element method (VEM) for optimal control problem governed by a convection dominated diffusion equation is investigated.
Qiming Wang, Zhaojie Zhou
doaj   +1 more source

A priori estimates for nonlinear elliptic complexes

open access: yesAdvances in Differential Equations, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
MOSCARIELLO, GIOCONDA   +3 more
openaire   +4 more sources

Strong solutions to a nonlinear stochastic Maxwell equation with a retarded material law [PDF]

open access: yes, 2017
We study the Cauchy problem for a semilinear stochastic Maxwell equation with Kerr-type nonlinearity and a retarded material law. We show existence and uniqueness of strong solutions using a refined Faedo-Galerkin method and spectral multiplier theorems ...
Hornung, Luca
core   +3 more sources

SU(2) Yang-Mills thermodynamics: A priori estimate and radiative corrections

open access: yesEPJ Web of Conferences, 2018
We review and explain essential characteristics of the a priori estimate of the thermal ground state and its excitations in the deconfining phase of SU(2) Quantum Yang-Mills thermodynamics.
Hofmann Ralf
doaj   +1 more source

A new mixed discontinuous Galerkin method for the electrostatic field

open access: yesAdvances in Difference Equations, 2019
We introduce and analyze a new mixed discontinuous Galerkin method for approximation of an electric field. We carry out its error analysis and prove an error estimate that is optimal in the mesh size.
Abdelhamid Zaghdani, Mohamed Ezzat
doaj   +1 more source

A priori SNR estimation and noise estimation for speech enhancement [PDF]

open access: yesEURASIP Journal on Advances in Signal Processing, 2016
A priori signal-to-noise ratio (SNR) estimation and noise estimation are important for speech enhancement. In this paper, a novel modified decision-directed (DD) a priori SNR estimation approach based on single-frequency entropy, named DDBSE, is proposed.
Yao, Rui, Zeng, ZeQing, Zhu, Ping
openaire   +2 more sources

On a class of singular hyperbolic equation with a weighted integral condition

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1999
In this paper, we study a mixed problem with a nonlocal condition for a class of second order singular hyperbolic equations. We prove the existence and uniqueness of a strong solution.
Said Mesloub, Abdelfatah Bouziani
doaj   +1 more source

Inference of entropies of discrete random variables with unknown cardinalities [PDF]

open access: yes, 2002
We examine the recently introduced NSB estimator of entropies of severely undersampled discrete variables and devise a procedure for calculating the involved integrals.
Gradshteyn   +3 more
core   +3 more sources

Existence and uniqueness of global strong solutions for a class of non-Newtonian fluids with small initial energy and vacuum

open access: yesComptes Rendus. Mécanique, 2021
In this article, we investigate an initial and boundary value problem for a class of compressible non-Newtonian fluids, provided the initial energy is small and the initial density containing the vacuum state is allowed.
Xu, Jianjun, Yuan, Hongjun
doaj   +1 more source

New entropy estimates for the Oldroyd-B model, and related models [PDF]

open access: yes, 2007
This short note presents the derivation of a new {\it a priori} estimate for the Oldroyd-B model. Such an estimate may provide useful information when investigating the long-time behaviour of macro-macro models, and the stability of numerical schemes. We
Hu, Dan, Lelievre, Tony
core   +5 more sources

Home - About - Disclaimer - Privacy