Results 11 to 20 of about 1,121,600 (292)

Coefficient-Based Regression with Non-Identical Unbounded Sampling [PDF]

open access: yesAbstract and Applied Analysis, 2013
We investigate a coefficient-based least squares regression problem with indefinite kernels from non-identical unbounded sampling processes. Here non-identical unbounded sampling means the samples are drawn independently but not identically from ...
Jia Cai
doaj   +2 more sources

Experimental Determination of Heat Transfer Coefficient Under Free Convection in an Unbounded Space [PDF]

open access: yesMATEC Web of Conferences, 2016
This article deals with the Experimental determination of heat transfer coefficient under free convection in an unbounded space. Experiments were performed with different types of resistors when changing power, the heat transfer coefficient is calculated.
Timoshenko Evgenya   +2 more
doaj   +3 more sources

An extended Halanay inequality with unbounded coefficient functions on time scales [PDF]

open access: yesJournal of Inequalities and Applications, 2016
In this paper, we obtain an extended Halanay inequality with unbounded coefficient functions on time scales, which extends an earlier result in Wen et al. (J. Math. Anal. Appl. 347:169-178, 2008). Two illustrative examples are also given.
Boqun Ou   +3 more
doaj   +2 more sources

Orbital dynamics in the Hill problem with oblateness

open access: yesResults in Physics, 2023
In this paper, we investigate the impact of the oblateness of the secondary body on the motion of a test particle in the near vicinity of the secondary body, specifically in the context of the extended version of the planar Hill problem.
Eman M. Moneer   +5 more
doaj   +1 more source

Non autonomous parabolic problems with unbounded coefficients in unbounded domains

open access: yesAdvances in Differential Equations, 2015
Given a class of nonautonomous elliptic operators $\A(t)$ with unbounded coefficients, defined in $\overline{I \times \Om}$ (where $I$ is a right-halfline or $I=\R$ and $\Om\subset \Rd$ is possibly unbounded), we prove existence and uniqueness of the evolution operator associated to $\A(t)$ in the space of bounded and continuous functions, under ...
ANGIULI, Luciana   +1 more
openaire   +5 more sources

Fredholm differential operators with unbounded coefficients

open access: yesJournal of Differential Equations, 2005
We prove that a first order linear differential operator G with unbounded operator coefficients is Fredholm on spaces of functions on the real line with values in a reflexive Banach space if and only if the corresponding strongly continuous evolution family has exponential dichotomies on both semiaxises and a pair of the ranges of the dichotomy ...
Latushkin, Yuri, Tomilov, Yuri
openaire   +3 more sources

Unbounded-time reachability analysis of hybrid systems by abstract acceleration

open access: yes, 2015
Linear dynamical systems are ubiquitous in hybrid systems, both as physical models or as software control modules. Therefore we need an unbounded-time reachability analysis that can cope with industrial-scale hybrid system models with hundreds of ...
Peter Schrammel   +1 more
core   +2 more sources

A modified quasi-boundary value method for a class of abstract parabolic ill-posed problems

open access: yesBoundary Value Problems, 2006
We study a final value problem for first-order abstract differential equation with positive self-adjoint unbounded operator coefficient. This problem is ill-posed.
S. Djezzar, M. Denche
doaj   +4 more sources

On pseudomonotone elliptic operators with functional dependence on unbounded domains

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
We generalize F. E. Browder's results concerning pseudomonotone elliptic partial differential operators defined on unbounded domains. We show that under suitable assumptions, Browder's result holds true if the coefficient functions are functionals of ...
Mihály Csirik
doaj   +1 more source

Unbounded rational systems with nonconstant coefficients

open access: yesNonautonomous Dynamical Systems, 2022
Abstract We show the existence of unbounded solutions to difference equations of the form {
Kudlak Zachary, Vernon R. Patrick
openaire   +2 more sources

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