Results 21 to 30 of about 2,664 (177)

Attractors for Nonautonomous Multivalued Evolution Systems Generated by Time-Dependent Subdifferentials

open access: yesAbstract and Applied Analysis, 2002
In a real separable Hilbert space, we consider nonautonomous evolution equations including time-dependent subdifferentials and their nonmonotone multivalued perturbations.
Noriaki Yamazaki
doaj   +1 more source

An Active Set Algorithm for Nonlinear Optimization with Polyhedral Constraints [PDF]

open access: yes, 2016
A polyhedral active set algorithm PASA is developed for solving a nonlinear optimization problem whose feasible set is a polyhedron. Phase one of the algorithm is the gradient projection method, while phase two is any algorithm for solving a linearly ...
Hager, William W., Zhang, Hongchao
core   +3 more sources

The LBFGS Quasi-Newtonian Method for Molecular Modeling Prion AGAAAAGA Amyloid Fibrils [PDF]

open access: yes, 2012
Experimental X-ray crystallography, NMR (Nuclear Magnetic Resonance) spectroscopy, dual polarization interferometry, etc are indeed very powerful tools to determine the 3-Dimensional structure of a protein (including the membrane protein); theoretical ...
Hou, Yating   +4 more
core   +3 more sources

On weak solution of a hyperbolic differential inclusion with nonmonotone discontinuous nonlinear term

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1999
In this paper, a hyperbolic differential inclusion with nonmonotone discontinuous and nonlinear term, which the generalized velocity acts as its variable, is studied and the existence and decay of its weak solution are obtained.
Guo Xingming
doaj   +1 more source

Bifurcation of periodic orbits near a frequency maximum in near-integrable driven oscillators with friction [PDF]

open access: yes, 1993
We investigate analytically the effect of perturbations on an integrable oscillator in one degree of freedom whose frequency shows a maximum as a function of the energy, i.e. a system with nonmonotone twist.
Gils, S.A. van, Valkering, T.P.
core   +4 more sources

Fractional elliptic obstacle systems with multivalued terms and nonlocal operators

open access: yesNonlinear Analysis
In this paper, we introduce and study a fractional elliptic obstacle system, which is composed of two elliptic inclusions with fractional (pi, qi)-Laplace operators, nonlocal functions, and multivalued terms.
Jinxia Cen   +2 more
doaj   +1 more source

A new steplength selection for scaled gradient methods with application to image deblurring [PDF]

open access: yes, 2015
Gradient methods are frequently used in large scale image deblurring problems since they avoid the onerous computation of the Hessian matrix of the objective function.
Porta, Federica   +2 more
core   +2 more sources

Interpolation Theorems for Nonmonotonic Reasoning Systems [PDF]

open access: yes, 2002
Craig's interpolation theorem (Craig 1957) is an important theorem known for propositional logic and first-order logic. It says that if a logical formula $ $ logically follows from a formula $ $, then there is a formula $ $, including only symbols that appear in both $ , $, such that $ $ logically follows from $ $ and $ $ logically follows from
openaire   +2 more sources

Pairwise Imitation and Tournament Graphs

open access: yesInternational Economic Review, EarlyView.
ABSTRACT This paper investigates strategic dynamics under the behavioral rule of pairwise interact and imitate (PII), which requires minimal information and emphasizes outperforming opponents in pairwise interactions. We characterize PII using weak tournament graphs and, for a broad class of dynamics, establish a one‐shot stability result for ...
Sung‐Ha Hwang   +3 more
wiley   +1 more source

A nonmonotone trust-region-approach with nonmonotone adaptive radius for solving nonlinear systems

open access: yesIranian Journal of Numerical Analysis and Optimization, 2016
This paper presents a trust-region procedure for solving systems of nonlinear equations. The proposed approach takes advantages of an effective adaptive trust-region radius and a nonmonotone strategy by combining both of them appropriately. It is believed that selecting an appropriate adaptive radius based on a suitable nonmonotone strategy can improve
Amini, Keyvan   +2 more
openaire   +2 more sources

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