Results 111 to 120 of about 35,286 (235)

Change Point Analysis for Functional Data Using Empirical Characteristic Functionals

open access: yesJournal of Time Series Analysis, Volume 47, Issue 3, Page 612-631, May 2026.
ABSTRACT We develop a new method to detect change points in the distribution of functional data based on integrated CUSUM processes of empirical characteristic functionals. Asymptotic results are presented under conditions allowing for low‐order moments and serial dependence in the data establishing the limiting null‐distribution of the proposed test ...
Lajos Horváth   +2 more
wiley   +1 more source

On Uniqueness of Strong Solution of Stochastic Systems

open access: yesAbstract and Applied Analysis, 2014
A kind of the well-known matrix Riccati equations which arise in certain stochastic optimal problems is investigated. With the aid of the operator spectrum and the generalized Lyapunov equation approach, we give a sufficient condition for existence and ...
Gang Li, Ming Chen
doaj   +1 more source

Efficient Energy‐Stable Discontinuous Galerkin Scheme for the Non‐Isothermal Cahn–Hilliard–Navier–Stokes Two‐Phase Fluid Flow System

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 7, 15 April 2026.
ABSTRACT In this article, we propose a novel numerical framework for the non‐isothermal Cahn–Hilliard–Navier–Stokes two‐phase flow system, which couples the incompressible Navier–Stokes equations, the Cahn–Hilliard phase‐field equation, and the heat transport equation to capture temperature‐dependent two‐phase flow dynamics.
Guang‐An Zou   +4 more
wiley   +1 more source

Exploring Soliton Solutions and Chaotic Dynamics in the (3+1)-Dimensional Wazwaz–Benjamin–Bona–Mahony Equation: A Generalized Rational Exponential Function Approach

open access: yesFractal and Fractional
This paper investigates the explicit, accurate soliton and dynamic strategies in the resolution of the Wazwaz–Benjamin–Bona–Mahony (WBBM) equations.
Amjad E. Hamza   +5 more
doaj   +1 more source

Stabilization by modification of the Lagrangian [PDF]

open access: yes
In order to reduce the error growth during a numerical integration, a method of stabilization of the differential equations of the Keplerian motion is offered.
Baumgarte, J. W.
core   +1 more source

Mathematical Modeling of Ebola Virus Disease in Bat Population

open access: yesDiscrete Dynamics in Nature and Society, 2018
Many scientific researches have demonstrated that bats can survive Ebola virus and they represent natural reservoirs of this zoonotic virus. In this study, we develop a generalized epizootic model for the transmission dynamics of Ebola virus disease (EVD)
Zineb EL Rhoubari   +3 more
doaj   +1 more source

Bounds for Lyapunov exponent of circular light orbits in black holes

open access: yesEuropean Physical Journal C: Particles and Fields
Chaotic systems near black holes satisfy a universal bound, $$\lambda \le \kappa _H$$ λ ≤ κ H linking the Lyapunov coefficient $$\lambda $$ λ associated with unstable orbits to surface gravity $$\kappa _H$$ κ H of the event horizon. A natural question is
Emanuel Gallo, Thomas Mädler
doaj   +1 more source

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