Results 21 to 30 of about 504 (127)

Combinatorial Number Theory, Recurrence of Operators and Linear Dynamics [PDF]

open access: yes, 2023
Tesis por compendio[ES] La tesis "Teoría Combinatoria de Números, Recurrencia de Operadores y Dinámica Lineal" se sitúa dentro del estudio de la dinámica de operadores lineales, o Dinámica Lineal.
López-Martínez, Antoni
core   +1 more source

Linear response theory for magnetic Schrödinger operators in disordered media

open access: yes, 2005
We justify the linear response theory for an ergodic Schrödinger operator with magnetic field within the noninteracting particle approximation, and derive a Kubo formula for the electric conductivity tensor.
Jean-Marc Bouclet   +7 more
core   +1 more source

Geometric erogdicity of a bead-spring pair with stochastic Stokes forcing [PDF]

open access: yes, 2009
We consider a simple model for the uctuating hydrodynamics of a exible polymer in dilute solution, demonstrating geometric ergodicity for a pair of particles that interact with each other through a nonlinear spring potential while being advected by ...
McKinley, Scott A.   +2 more
core  

Spectral analysis of ergodic Schrödinger operators

open access: yes, 2022
ilustraciones, fotografíasEn este trabajo final de maestría estudiamos los tipos espectrales de las familias de operadores de Schrödinger unidimensionales discretos {Hω}ω∈Ω en las que el potencial de Hω está dado por Vω(n) = f(T nω), para n ∈ Z, donde f :
Silva Barbosa, Pablo Blas Tupac
core  

Enhancing generalizability theory with mixed‐effects models for heteroscedasticity in psychological measurement: A theoretical introduction with an application from EEG data

open access: yesBritish Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Generalizability theory (G‐theory) defines a statistical framework for assessing measurement reliability by decomposing observed variance into meaningful components attributable to persons, facets, and error. Classic G‐theory assumes homoscedastic residual variances across measurement conditions, an assumption that is often violated in ...
Philippe Rast, Peter E. Clayson
wiley   +1 more source

Operador de Ruelle-Perron-Frobenius e transformações expansoras [PDF]

open access: yes, 2005
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Matemática e Computação CientíficaSeja T uma aplicação expansora em um espaço métrico compacto X.
Maciel, Anderson Luiz
core  

Ergodic Theory and Averaging Iterations

open access: yes, 1973
Suppose X is a Banach space and T a continuous linear operator on X. The significance of the asymptotic convergence of T for the approximate solution of the equation (I - T)x = f by means of the Picard iterations was clearly shown in Browder's and ...
J. J. Koliha
core   +1 more source

Wave Tracing: Generalizing The Path Integral To Wave Optics

open access: yesComputer Graphics Forum, EarlyView.
Abstract Modeling the wave nature of light and the propagation and diffraction of electromagnetic fields is crucial for the accurate simulation of many phenomena, yet wave simulations are significantly more computationally complex than classical ray‐based models.
Shlomi Steinberg, Matt Pharr
wiley   +1 more source

Discharge‐Targeted Hydraulic Tomography to Quantify and Locate Aquifer Discharge

open access: yesGroundwater, EarlyView.
Abstract Quantifying and localizing groundwater discharge is inherently difficult. It requires knowledge about hydraulic conductivity and the hydraulic gradient on the scale of interest. Conventional hydraulic testing, such as pumping tests, may fail in the presence of heterogeneity and complex structural boundaries.
Konstantin Drach   +2 more
wiley   +1 more source

A Comparative Review of Specification Tests for Diffusion Models

open access: yesInternational Statistical Review, EarlyView.
Summary Diffusion models play an essential role in modelling continuous‐time stochastic processes in the financial field. Therefore, several proposals have been developed in the last decades to test the specification of stochastic differential equations.
A. López‐Pérez   +3 more
wiley   +1 more source

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