Results 21 to 30 of about 22,159,556 (179)

Dynamic Experiment Design Regularization Approach to Adaptive Imaging with Array Radar/SAR Sensor Systems

Sensors, 2011
We consider a problem of high-resolution array radar/SAR imaging formalized in terms of a nonlinear ill-posed inverse problem of nonparametric estimation of the power spatial spectrum pattern (SSP) of the random wavefield scattered from a remotely sensed
Stewart Santos, José Tuxpan, Yuriy Shkvarko   +2 more
doaj   +1 more source

Adaptive variational discretization approximation method for parabolic optimal control problems

Journal of Inequalities and Applications, 2020
In this paper, we study variational discretization method for parabolic optimization problems. Firstly, we obtain some convergence and superconvergence analysis results of the approximation scheme.
Yuelong Tang, Yuchun Hua
doaj   +1 more source

Discriminant analysis of variational pulsometry parameters

Российский технологический журнал, 2020
The article is devoted to an important applied problem - the exploration of heart rate variability using linear discriminant analysis. Statistical methods are often used in modern medicine, especially in cardiology.
U. I. Silkina, V. A. Balandin
doaj   +1 more source

Sequential Buckling: A Variational Analysis [PDF]

SIAM Journal on Mathematical Analysis, 2001
Summary: We examine a variational problem from elastic stability theory: a thin elastic strut on elastic foundation. The strut has infinite length, and its lateral deflection is represented by \(u:\mathbb{R}\to\mathbb{R}\). Deformation takes place under conditions of prescribed total shortening, leading to the variational problem \[ \inf \left\{ \frac ...
openaire   +4 more sources

Variational Integrators [PDF]

, 2004
Variational integrators are a class of discretizations for mechanical systems which are derived by discretizing Hamilton's principle of stationary action.
West, Matthew
core   +1 more source

Variational Methods for Nonsmooth Mechanics [PDF]

, 2003
In this thesis we investigate nonsmooth classical and continuum mechanics and its discretizations by means of variational numerical and geometric methods.
Fetecau, Razvan Constantin
core   +1 more source

Interior Peak Solutions for a Semilinear Dirichlet Problem

Axioms
In this paper, we consider the semilinear Dirichlet problem (Pε):−Δu+V(x)u=un+2n−2−ε, u>0 in Ω, u=0 on ∂Ω, where Ω is a bounded regular domain in Rn, n≥4, ε is a small positive parameter, and V is a non-constant positive C2-function on Ω¯.
Hissah Alharbi, Hibah Alkhuzayyim, Mohamed Ben Ayed, Khalil El Mehdi   +3 more
doaj   +1 more source

Ritz Variational Method for the Flexural Analysis of Rectangular Kirchhoff Plate on Winkler Foundation

Журнал інженерних наук, 2019
In this study, the Ritz variational method has been applied to solve the bending problem of rectangular Kirchhoff plate resting on Winkler foundation for the case of simply supported edges and transverse distributed load.
Ike C. C.
doaj   +1 more source

Dual Variational Formulations for a Large Class of Non-Convex Models in the Calculus of Variations

Mathematics, 2022
This article develops dual variational formulations for a large class of models in variational optimization. The results are established through basic tools of functional analysis, convex analysis and duality theory.
Fabio Silva Botelho
doaj   +1 more source

Applications of Variational Analysis to Strong Nash Equilibria

Axioms
Game theory problems have a wide array of applications and intricate structures. Because of this, there are different types of solution concepts available in the literature.
Glenn Harris, Sien Deng
doaj   +1 more source