Results 41 to 50 of about 48,613 (216)

Hybrid Steepest-Descent Methods for Triple Hierarchical Variational Inequalities

open access: yesJournal of Function Spaces, 2015
We introduce and analyze a relaxed iterative algorithm by combining Korpelevich’s extragradient method, hybrid steepest-descent method, and Mann’s iteration method.
L. C. Ceng   +3 more
doaj   +1 more source

Application of a flat variational modal decomposition algorithm in fault diagnosis of rolling bearings

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2020
Fault diagnosis of rolling bearings can effectively prevent sudden accidents and is an important factor for the safe operation of mechanical systems.
Haodong Li   +5 more
doaj   +1 more source

On the Variational Problems without Having Desired Variational Symmetries

open access: yesJournal of Mathematics, 2013
We will have an attempt to present a method for constructing variational problems without having a desired one-parameter transformation group as a variational symmetry.
Mehdi Nadjafikhah   +2 more
doaj   +1 more source

A variational approach to the shock structure problem [PDF]

open access: yesTheoretical and Applied Mechanics, 2005
A variational approach to the shock structure problem is proposed. The set of governing equations, consisted of n first-order ordinary differential equations accompanied with 2n boundary conditions at ±∞, is put into variational form by means of least ...
Simić Srboljub S.
doaj   +1 more source

Variational methods for phononic calculations [PDF]

open access: yesWave Motion, 2016
Three fundamental variational principles used for solving elastodynamic eigenvalue problems are studied within the context of elastic wave propagation in periodic composites (phononics). We study the convergence of the eigenvalue problems resulting from the displacement Rayleigh quotient, the stress Rayleigh quotient and the mixed quotient.
Yan Lu, Ankit Srivastava
openaire   +3 more sources

Variational Bayesian Algorithms for Maneuvering Target Tracking with Nonlinear Measurements in Sensor Networks

open access: yesEntropy, 2023
The variational Bayesian method solves nonlinear estimation problems by iteratively computing the integral of the marginal density. Many researchers have demonstrated the fact its performance depends on the linear approximation in the computation of the ...
Yumei Hu   +5 more
doaj   +1 more source

Numerical Solution of the Inverse Problem of Determining an Unknown Source Term in a Heat Equation

open access: yesJournal of Applied Mathematics, 2012
This paper investigates the inverse problem of determining a heat source in the parabolic heat equation using the usual conditions. Firstly, the problem is reduced to an equivalent problem which is easy to handle using variational iteration method ...
Xiuming Li, Suping Qian
doaj   +1 more source

Adaptive thresholding by variational method [PDF]

open access: yesIEEE Transactions on Image Processing, 1998
When using thresholding method to segment an image, a fixed threshold is not suitable if the background is uneven. Here, we propose a new adaptive thresholding method using variational theory. The method requires only one parameter to be selected and the adaptive threshold surface can be found automatically from the original image.
Chan, FHY, Lam, FK, Zhu, H
openaire   +5 more sources

THE METHOD OF SYSTEMATIC VARIATIONS

open access: yesSoil Science, 1963
info:eu-repo/semantics ...
openaire   +3 more sources

Revised Variational Iteration Method for Solving Systems of Nonlinear Fractional-Order Differential Equations

open access: yesAbstract and Applied Analysis, 2013
A modification of the variational iteration method (VIM) for solving systems of nonlinear fractional-order differential equations is proposed. The fractional derivatives are described in the Caputo sense.
C. Ünlü, H. Jafari, D. Baleanu
doaj   +1 more source

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