Results 31 to 40 of about 278,077 (263)

Early-Warning Signs for Pattern-Formation in Stochastic Partial Differential Equations [PDF]

open access: yes, 2014
There have been significant recent advances in our understanding of the potential use and limitations of early-warning signs for predicting drastic changes, so called critical transitions or tipping points, in dynamical systems.
Gowda, Karna, Kuehn, Christian
core   +2 more sources

Automatic Recognition Method of Letter Images in English Self-Learning Based on Partial Differential Equation Method

open access: yesAdvances in Mathematical Physics, 2021
According to the current situation of knowledge popularization, students simply rely on the knowledge learned in the classroom that is far from adapting to the development of modern society; so, every student needs to have the consciousness and ability ...
Yu Zhao, Shuping Du, Ran Li, Hong Yue
doaj   +1 more source

Investigation of Phase-Locked Loop Statistics via Numerical Implementation of the Fokker–Planck Equation

open access: yesApplied Sciences, 2020
The goal of this paper is to explore the effect of various parameters on the information geometric structure of the phase-locked loop (PLL) statistics, both transient and stationary. Comprehensive treatment on the behavior of PLL statistics will be given.
Dah-Jing Jwo
doaj   +1 more source

Nonparametric regression penalizing deviations from additivity [PDF]

open access: yes, 2005
Due to the curse of dimensionality, estimation in a multidimensional nonparametric regression model is in general not feasible. Hence, additional restrictions are introduced, and the additive model takes a prominent place.
Gasser, T., Seifert, B., Studer, M.
core   +1 more source

Sick leave and disability pension among TMD patients with musculoskeletal diseases, mental and behavioural disorders – a SWEREG-TMD population-based cohort study

open access: yesBMC Public Health, 2023
Background Temporomandibular disorders (TMD) are associated with musculoskeletal diseases (MSD), mental and behavioural disorders (MBD), and patients with TMD have been shown to have 2–3 times more days of sick leave (SL) and disability pension (DP) than
Adrian Salinas Fredricson   +8 more
doaj   +1 more source

Additive difference scheme for two-dimensional fractional in time diffusion equation

open access: yesFilomat, 2017
An additive finite-difference scheme for numerical approximation of initial-boundary value problem for two-dimensional fractional in time diffusion equation is proposed. Its stability is investigated and a convergence rate estimate is obtained.
Hodžić-Živanović, Sandra   +1 more
openaire   +2 more sources

Non-isothermal transport of multi-phase fluids in porous media. Constitutive equations [PDF]

open access: yes, 2018
We develop constitutive equations for multi-component, multi-phase, macro-scale flow in a porous medium exposed to temperature-, composition-, and pressure -gradients. The porous medium is non-deformable. We define the pressure and the composition of the
Bedeaux, Dick   +4 more
core   +3 more sources

Combinatorics of Matrix Factorizations and Integrable Systems [PDF]

open access: yes, 2013
We study relations between the eigenvectors of rational matrix functions on the Riemann sphere. Our main result is that for a subclass of functions that are products of two elementary blocks it is possible to represent these relations in a combinatorial ...
Dzhamay, Anton
core   +1 more source

Reduced Multiplicative (BURA-MR) and Additive (BURA-AR) Best Uniform Rational Approximation Methods and Algorithms for Fractional Elliptic Equations

open access: yesFractal and Fractional, 2021
Numerical methods for spectral space-fractional elliptic equations are studied. The boundary value problem is defined in a bounded domain of general geometry, Ω⊂Rd, d∈{1,2,3}. Assuming that the finite difference method (FDM) or the finite element method (
Stanislav Harizanov   +4 more
doaj   +1 more source

Behavior of solution of stochastic difference equation with continuous time under additive fading noise

open access: yesDiscrete & Continuous Dynamical Systems - B, 2022
<p style='text-indent:20px;'>Effect of additive fading noise on a behavior of the solution of a stochastic difference equation with continuous time is investigated. It is shown that if the zero solution of the initial stochastic difference equation is asymptotically mean square quasistable and the level of additive stochastic perturbations is ...
openaire   +3 more sources

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