Results 21 to 30 of about 31,536,622 (369)

Inexact Model: A Framework for Optimization and Variational Inequalities [PDF]

open access: yes, 2020
In this paper we propose a general algorithmic framework for first-order methods in optimization in a broad sense, including minimization problems, saddle-point problems and variational inequalities.
Agafonov, Artem   +8 more
core   +3 more sources

Variational approach for resolving the flow of generalized Newtonian fluids in circular pipes and plane slits [PDF]

open access: yes, 2015
In this paper, we use a generic and general variational method to obtain solutions to the flow of generalized Newtonian fluids through circular pipes and plane slits.
Sochi, Taha
core   +4 more sources

Nucleon matrix elements using the variational method in lattice QCD [PDF]

open access: yes, 2016
The extraction of hadron matrix elements in lattice QCD using the standard two- and three-point correlator functions demands careful attention to systematic uncertainties. One of the most commonly studied sources of systematic error is contamination from
Jack Dragos   +8 more
semanticscholar   +1 more source

Variational Quantum Monte Carlo Method with a Neural-Network Ansatz for Open Quantum Systems. [PDF]

open access: yesPhysical Review Letters, 2019
The possibility to simulate the properties of many-body open quantum systems with a large number of degrees of freedom (d.o.f.) is the premise to the solution of several outstanding problems in quantum science and quantum information. The challenge posed
A. Nagy, V. Savona
semanticscholar   +1 more source

On a variation of Sands′ method [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1986
A subset of a finite additive abelian group G is a Z‐set if for all a ∈ G, na ∈ G for all n ∈ Z. The group G is called “Z‐good” if in every factorization G = A ⊕ B, where A and B are Z‐sets at least one factor is periodic. Otherwise G is called “Z‐bad.”The purpose of this paper is to investigate factorizations of finite ablian groups which arise from a
openaire   +4 more sources

An Adaptive Variational Mode Decomposition Technique with Differential Evolution Algorithm and Its Application Analysis

open access: yesShock and Vibration, 2021
Variational mode decomposition is an adaptive nonrecursive signal decomposition and time-frequency distribution estimation method. The improper selection of the decomposition number will cause under decomposition or over decomposition, and the improper ...
Yuanxin Wang
doaj   +1 more source

Solutions of (2+1)-D & (3+1)-D Burgers Equations by New Laplace Variational Iteration Technique

open access: yesAxioms, 2023
The new Laplace variational iterative method is used in this research for solving the (2+1)-D and (3+1)-D Burgers equations. This technique relies on the modified variational iteration method and the Laplace transform.
Gurpreet Singh   +4 more
doaj   +1 more source

Variational Iteration Transform Method for Fractional Differential Equations with Local Fractional Derivative

open access: yesAbstract and Applied Analysis, 2014
We propose the variational iteration transform method in the sense of local fractional derivative, which is derived from the coupling method of local fractional variational iteration method and differential transform method.
Yong-Ju Yang, Liu-Qing Hua
doaj   +1 more source

Analytic approximate solutions for some nonlinear Parabolic dynamical wave equations

open access: yesJournal of Taibah University for Science, 2020
In this paper, modified variational iteration algorithm-II is investigated for finding approximate solutions of nonlinear Parabolic equations. Comparisons of the MVIA-II with trigonometric B-spline collocation method, variational iteration method ...
Hijaz Ahmad   +3 more
doaj   +1 more source

Crystalline variational methods [PDF]

open access: yesProceedings of the National Academy of Sciences, 2002
A surface free energy function is defined to be crystalline if its Wulff shape (the equilibrium crystal shape) is a polyhedron. All the questions that one considers for the area functional, where the surface free energy per unit area is 1 for all normal directions, can be considered for crystalline surface free energies.
openaire   +3 more sources

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