Results 41 to 50 of about 50,240 (308)

Lyapunov functions for linear nonautonomous dynamical equations on time scales [PDF]

open access: yes, 2006
The existence of a Lyapunov function is established following a method of Yoshizawa for the uniform exponential asymptotic stability of the zero solution of a nonautonomous linear dynamical equation on a time scale with uniformly bounded ...
Peter E. Kloeden   +3 more
core   +1 more source

The asymptotic properties of the dynamic equation with a delayed argument [PDF]

open access: yesOpuscula Mathematica, 2006
In this paper, we present some asymptotic results related to the scalar dynamic equation with a delayed argument. Using the time scale calculus we generalize some results known in the differential and difference case to the more general dynamic case.
Jan Čermák, Miroslav Urbánek
doaj  

Asymptotic scattering and duality in the one-dimensional three-state quantum Potts model on a lattice

open access: yesNew Journal of Physics, 2013
We determine numerically the single-particle and the two-particle spectrum of the three-state quantum Potts model on a lattice by using the density matrix renormalization group method, and extract information on the asymptotic (small momentum) S -matrix ...
Ákos Rapp   +3 more
doaj   +1 more source

On Entropy Test for Conditionally Heteroscedastic Location-Scale Time Series Models

open access: yesEntropy, 2017
This study considers the goodness of fit test for a class of conditionally heteroscedastic location-scale time series models. For this task, we develop an entropy-type goodness of fit test based on residuals.
Sangyeol Lee, Minjo Kim
doaj   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

Towards large scale continuous EDA: a random matrix theory perspective

open access: yes, 2013
Estimation of distribution algorithms (EDA) are a major branch of evolutionary algorithms (EA) with some unique advantages in principle. They are able to take advantage of correlation structure to drive the search more efficiently, and they are able to ...
Kabán, Ata   +5 more
core   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

open access: yesAdvanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice   +2 more
wiley   +1 more source

Two-scale convergence analysis and numerical simulation for periodic Kirchhoff plates

open access: yesHeliyon
Homogenization analysis methods provide a high-efficiency tool to address periodic structures. However, the popular Asymptotic Homogenization Method (AHM) cannot be directly applied to the homogenization of periodic plate structures due to less ...
Zhiwei Huang   +3 more
doaj   +1 more source

Leading Twist Parton Distribution Amplitudes in Heavy Flavor Pseudoscalar Mesons From Dyson-Schwinger Equations of QCD

open access: yesEPJ Web of Conferences, 2016
We compute the valence-quark leading twist parton distribution amplitudes (PDAs) of heavy pseudoscalar mesons ηc and ηb and find that they are both broader than the δ-like function while narrower than the asymptotic one.
Ding Minghui   +4 more
doaj   +1 more source

Robust Estimations for the Tail Index of Weibull-Type Distribution

open access: yesRisks, 2018
Based on suitable left-truncated or censored data, two flexible classes of M-estimations of Weibull tail coefficient are proposed with two additional parameters bounding the impact of extreme contamination.
Chengping Gong, Chengxiu Ling
doaj   +1 more source

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