Results 91 to 100 of about 1,352,114 (197)

Using Euler-Lagrange Equation In Solving Isoperimetric Problems

open access: yes, 2023
Many applications of calculus of variation lead to problems in which not only boundary conditions, but also conditions called subsidiary are imposed on the extreme curve. These problems are known as Isoperimetric problems.
Muhammed D.Al-Alasadi
core  

Poisson Structures for PDEs Associated with Diffeomorphism Groups [PDF]

open access: yes, 2004
We study Poisson and Lie-Poisson structures on the diffeomorphism groups with a smooth metric spray in connection with dynamics of nonlinear PDEs. In particular, we provide a precise analytic sense in which the time t map for the Euler equations of an ...
Vasylkevych, Sergiy
core   +1 more source

Image Restoration using a Nonlinear Second-order Parabolic PDE-based Scheme

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2017
A novel anisotropic diffusion-based image denoising and restoration approach is proposed in this paper. A variational model for image restoration is introduced first, then the corresponding Euler-Lagrange equation being determined.
Barbu Tudor, Moroşanu Costică
doaj   +1 more source

Capability and Limitations of a Tuned Mass Damper for a 15‐MW Semisubmersible Floating Wind Turbine

open access: yesWind Energy, Volume 29, Issue 11, November 2026.
ABSTRACT Large floating offshore wind turbines (FOWTs) under coupled aerodynamic and hydrodynamic loading exhibit broadband low‐frequency response in addition to the platform‐pitch resonance. Tuned mass dampers (TMDs) have been studied for a range of applications, but their net benefit under fully coupled operational conditions has not been quantified.
Yu Gao   +3 more
wiley   +1 more source

Rocking and Rolling of Rigid Polygons Under Seismic Excitation

open access: yesEarthquake Engineering &Structural Dynamics, Volume 55, Issue 12, Page 3161-3180, 10 October 2026.
ABSTRACT We present an event driven analytical framework for rigid cyclic polygons subjected to horizontal ground excitation in which uplift, impact, and successive pivot switching are treated within a unified non‐smooth dynamical description. Rolling is defined as a sequence of energetically admissible transitions between neighbouring vertices tied to
Atif Rasheed   +1 more
wiley   +1 more source

A NEW TYPE OF DISCRETE EULER-LAGRANGE EQUATION WITH APPLICATIONS IN OPTIMAL CONTROL [PDF]

open access: yes, 2014
A new type of discrete Euler-Lagrange equation, suitable for generalization, is presented in this paper. Several forms of this equation can be found in references. They have different differential operators as well as combinations of them.
Perić, Staniša Lj   +4 more
core   +1 more source

Euler- Lagrange Equation for Fractional Variational Problems

open access: yes, 2017
This thesis introduces three new operators and presents some of their properties. It defines a new class of variational problems in terms of these operators and derives Euler-Lagrange equations for this class of problems.
Diriba, Hailu Daba
core   +1 more source

Deformation minimal bending of compact manifolds: case of simple closed curves [PDF]

open access: yesOpuscula Mathematica, 2008
The problem of minimal distortion bending of smooth compact embedded connected Riemannian \(n\)-manifolds \(M\) and \(N\) without boundary is made precise by defining a deformation energy functional \(\Phi\) on the set of diffeomorphisms \(\text{Diff}(M ...
Oksana Bihun, Carmen Chicone
doaj  

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

open access: yesJournal of Field Robotics, Volume 43, Issue 7, Page 4475-4514, October 2026.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang   +3 more
wiley   +1 more source

On the Euler-Lagrange Equation of a functional by Pólya and Szegö

open access: yes, 2016
We study the regularity properties of generalized solutions of the Euler-Lagrange equation of a functional involving capacity and perimeter, related to a conjecture of Polya and Szeg­­­­
Zhong, Xiao, FUSCO, NICOLA
core   +1 more source

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