Results 21 to 30 of about 1,574 (145)

Dynamics of Dengue epidemics using optimal control [PDF]

open access: yes, 2010
We present an application of optimal control theory to Dengue epidemics. This epidemiologic disease is an important theme in tropical countries due to the growing number of infected individuals.
Betts   +14 more
core   +2 more sources

Multiobjective reverse logistics model for inventory management with environmental impacts: An application in industry

open access: yesIntelligent Systems with Applications, 2022
We propose new mathematical models of inventory management in a reverse logistics system. The proposed models extend the model introduced by Nahmias and Rivera with the assumption that the demand for newly produced and repaired (remanufacturing) items ...
M. Forkan, M.M. Rizvi, M.A.M. Chowdhury
doaj   +1 more source

A Ky Fan minimax inequality for quasiequilibria on finite dimensional spaces [PDF]

open access: yes, 2017
Several results concerning existence of solutions of a quasiequilibrium problem defined on a finite dimensional space are established. The proof of the first result is based on a Michael selection theorem for lower semicontinuous set-valued maps which ...
Castellani, Marco   +2 more
core   +2 more sources

A reduced space branch and bound algorithm for a class of sum of ratios problems

open access: yesOpen Mathematics, 2018
Sum of ratios problem occurs frequently in various areas of engineering practice and management science, but most solution methods for this kind of problem are often designed for determining local solutions .
Zhao Yingfeng, Zhao Ting
doaj   +1 more source

Optimization of Dengue Epidemics: a test case with different discretization schemes [PDF]

open access: yes, 2009
The incidence of Dengue epidemiologic disease has grown in recent decades. In this paper an application of optimal control in Dengue epidemics is presented.
Ch. Tsitouras   +5 more
core   +2 more sources

Optical vortices in dispersive nonlinear Kerr‐type media

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2004, Issue 18, Page 949-967, 2004., 2004
The applied method of slowly varying amplitudes gives us the possibility to reduce the nonlinear vector integrodifferential wave equation of the electrical and magnetic vector fields to the amplitude vector nonlinear differential equations. Using this approximation, different orders of dispersion of the linear and nonlinear susceptibility can be ...
Lubomir M. Kovachev
wiley   +1 more source

Least Change Secant Update Methods for Nonlinear Complementarity Problem

open access: yesIngeniería y Ciencia, 2015
In this work, we introduce a family of Least Change Secant Update Methods for solving Nonlinear Complementarity Problems based on its reformulation as a nonsmooth system using the one-parametric class of nonlinear complementarity functions introduced by ...
Favián Arenas A   +2 more
doaj   +1 more source

First-Order Methods for Convex Optimization

open access: yesEURO Journal on Computational Optimization, 2021
First-order methods for solving convex optimization problems have been at the forefront of mathematical optimization in the last 20 years. The rapid development of this important class of algorithms is motivated by the success stories reported in various
Pavel Dvurechensky   +2 more
doaj   +1 more source

Global Solutions to Nonconvex Optimization of 4th-Order Polynomial and Log-Sum-Exp Functions [PDF]

open access: yes, 2014
This paper presents a canonical dual approach for solving a nonconvex global optimization problem governed by a sum of fourth-order polynomial and a log-sum-exp function. Such a problem arises extensively in engineering and sciences.
Chen, Yi, Gao, David Y
core   +1 more source

A remark on a complementarity problem in Banach space

open access: yesInternational Journal of Stochastic Analysis, Volume 2004, Issue 3, Page 283-285, 2004., 2004
We give a modified proof of the theorem given in an earlier paper of the author (1994).
Sudarsan Nanda
wiley   +1 more source

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