Results 21 to 30 of about 2,487 (204)

Power management in a hydrothermal system considering maintenance using Lagrangian relaxation and augmented Lagrangian methods

open access: yesAlexandria Engineering Journal, 2022
The maintenance of power system equipment, specifically, the maintenance of generating units, is implicitly related to the reliability and economic operation of the power system.
M.R. Qader
doaj   +1 more source

An efficient homogenization method using the trigonometric interpolation and the fast fourier transform

open access: yesVietnam Journal of Mechanics, 2011
This study focuses on formulation of the Augmented Lagrangian and application of the Uzawa's algorithm to solve the homogenization problem of microscopic periodic media as in composites.
Ngoc-Trung Nguyen   +2 more
doaj   +1 more source

Integrated Routing and Network Flow Control Embracing Two Layers of TCP/IP Networks – Methodological Issues

open access: yesJournal of Telecommunications and Information Technology, 2012
A cross-layer network optimization problem is considered. It involves network and transport layers, treating both routing and flows as decision variables.
Andrzej Karbowski
doaj   +1 more source

A fast constrained image segmentation algorithm

open access: yesResults in Applied Mathematics, 2020
Normalized cut or Ncut has been one of the most widely used models for image processing. A constraint can also be included in the framework of Ncut to represent a priori information for an effective image segmentation.
Iván Ojeda-Ruiz, Young-Ju Lee
doaj   +1 more source

Augmented Lagrangian methods for variational inequality problems [PDF]

open access: yesRAIRO - Operations Research, 2010
Summary: We introduce augmented Lagrangian methods for solving finite dimensional variational inequality problems whose feasible sets are defined by convex inequalities, generalizing the proximal augmented Lagrangian method for constrained optimization.
Alfredo N. Iusem, Mostafa Nasri
openaire   +2 more sources

Total Fractional-Order Variation-Based Constraint Image Deblurring Problem

open access: yesMathematics, 2023
When deblurring an image, ensuring that the restored intensities are strictly non-negative is crucial. However, current numerical techniques often fail to consistently produce favorable results, leading to negative intensities that contribute to ...
Shahid Saleem   +2 more
doaj   +1 more source

Truss Structure Optimization with Subset Simulation and Augmented Lagrangian Multiplier Method

open access: yesAlgorithms, 2017
This paper presents a global optimization method for structural design optimization, which integrates subset simulation optimization (SSO) and the dynamic augmented Lagrangian multiplier method (DALMM).
Feng Du, Qiao-Yue Dong, Hong-Shuang Li
doaj   +1 more source

Augmented Lagrangian method for a total variation-based model for demodulating phase discontinuities

open access: yesJournal of Algorithms & Computational Technology, 2020
In this work, we reformulate the method presented in App. Opt. 53:2297 (2014) as a constrained minimization problem using the augmented Lagrangian method.
Ricardo Legarda-Saenz   +1 more
doaj   +1 more source

Augmented Lagrangian Method for Finding Minimum Norm Solution to the Absolute Value Equation [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2017
‎In this paper‎, ‎we give an algorithm to compute the minimum 1-norm solution to the absolute value equation (AVE)‎. ‎The augmented Lagrangian method is investigated for solving this problems‎ .
Saeed Ketabchi, Hossein Moosaei
doaj   +1 more source

Boundary augmented Lagrangian method for the Signorini problem [PDF]

open access: yesApplications of Mathematics, 2016
In this article, the authors consider an augmented Lagrangian method that is based on (i) a boundary variational formulation and (ii) a fixed point method. This boundary augmented Lagrangian method is specifically designed and analyzed for the Signorini problem of the Laplacian.
Zhang, Shougui, Li, Xiaolin
openaire   +1 more source

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