Results 41 to 50 of about 3,605 (210)

Ergodicity and Mixing Properties for SDEs with α-Stable Lévy Noises

open access: yesAxioms
In this paper, we consider a class of stochastic differential equations driven by multiplicative α-stable ...
Siyan Xu, Huiyan Zhao
doaj   +1 more source

Single‐subject designs in character education: Methods for rigorous, contextual, and practitioner‐led research

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Character education research is often constrained by blunt methodological tools. Surveys capture breadth without depth; case studies offer richness but lack replicability; and randomised controlled trials (RCTs), though indispensable at the policy level, are costly, disruptive and ill‐suited to everyday practice with individual pupils.
Shane McLoughlin
wiley   +1 more source

Statistical Gravity and Entropy of Spacetime

open access: yesStats
We discuss the foundations of the statistical gravity theory we proposed in a recent publication [Riccardo Fantoni, Quantum Reports, 6, 706 (2024)].
Riccardo Fantoni
doaj   +1 more source

Statements About the Pervasiveness of Behavior Require Data About the Pervasiveness of Behavior

open access: yesFrontiers in Psychology, 2020
Despite recent close attention to issues related to the reliability of psychological research (e.g., the replication crisis), issues of the validity of this research have not been considered to the same extent.
Craig P. Speelman, Marek McGann
doaj   +1 more source

Ergodic descriptors of non-ergodic stochastic processes

open access: yesJournal of The Royal Society Interface, 2022
The stochastic processes underlying the growth and stability of biological and psychological systems reveal themselves when far-from-equilibrium. Far-from-equilibrium, non-ergodicity reigns. Non-ergodicity implies that the average outcome for a group/ensemble (i.e. of representative organisms/minds) is not necessarily a reliable estimate of the average
Madhur Mangalam, Damian G. Kelty-Stephen
openaire   +3 more sources

Effect of Magnetic Islands on Neoclassical Heat Diffusivity in a Global Tokamak Simulation

open access: yesContributions to Plasma Physics, EarlyView.
ABSTRACT Resonant magnetic perturbations (RMPs) alter magnetic field topology via island formation and can modify core transport in toroidal fusion devices. Using the global gyrokinetic particle‐in‐cell code XGC‐S, originally developed for stellarator geometries, we quantify how island topology affects neoclassical heat transport in a circular tokamak ...
Joseph X. Li   +5 more
wiley   +1 more source

A hypothesis on ergodicity and the signal‐to‐noise paradox

open access: yesAtmospheric Science Letters
This letter raises the possibility that ergodicity concerns might have some bearing on the signal‐to‐noise paradox. This is explored by applying the ergodic theorem to the theory behind ensemble weather forecasting and the ensemble mean.
Daniel J. Brener
doaj   +1 more source

Measurement-Induced Dynamical Quantum Thermalization

open access: yesEntropy
One of the fundamental problems of quantum statistical physics is how an ideally isolated quantum system can ever reach thermal equilibrium behavior despite the unitary time evolution of quantum-mechanical systems.
Marvin Lenk   +3 more
doaj   +1 more source

Anomalous diffusion and ergodicity breaking in heterogeneous diffusion processes

open access: yesNew Journal of Physics, 2013
We demonstrate the non-ergodicity of a simple Markovian stochastic process with space-dependent diffusion coefficient D ( x ). For power-law forms D ( x ) ≃ | x | ^α , this process yields anomalous diffusion of the form 〈 x ^2 ( t )〉 ≃  t ^2/(2− ^α ...
Andrey G Cherstvy   +2 more
doaj   +1 more source

Machine Learning‐Assisted Design of BaTiO3‐Based Superparaelectric High‐Entropy Ceramics with Superior Energy Storage

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This study employed an adaptive iterative strategy combining machine learning algorithms, domain knowledge, experimental design, and experimental feedback to aim to precisely and quickly discover high‐entropy ceramics with excellent energy storage performance.
Haowen Liu   +4 more
wiley   +1 more source

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