Results 51 to 60 of about 9,353 (233)

Research dynamic modes of stick-slip effect with the account of hereditarity

open access: yesE3S Web of Conferences, 2018
In study with the help of the spectrum of maximal Lyapunov exponents, dynamic regimes of the stick-slip effect were studied with allowance effect of hereditarity.
Parovik Roman
doaj   +1 more source

On the interaction of a system with multifrequency oscillations with a chaotic generator [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика
The purpose of the work: to study the influence of the dynamics of a chaotic system on a system with multi-frequency quasi-periodicity and the Landau-Hopf scenario.
Kuznetsov, Aleksandr Petrovich   +1 more
doaj   +1 more source

Classification of Processes by the Lyapunov Exponent [PDF]

open access: yes, 2005
This paper deals with the problem of the discrimination between well-predictable and not-well-predictable time series. One criterion for the separation is given by the size of the Lyapunov exponent, which was originally defined for deterministic systems.
openaire   +4 more sources

Ergodicity for SDEs and approximations: Locally Lipschitz vector fields and degenerate noise [PDF]

open access: yes, 2002
The ergodic properties of SDEs, and various time discretizations for SDEs, are studied. The ergodicity of SDEs is established by using techniques from the theory of Markov chains on general state spaces, such as that expounded by Meyn-Tweedie ...
Stuart, A.M.   +6 more
core   +1 more source

Strong fast invertibility and Lyapunov exponents for linear systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations
With the goal of deriving the existence of a dominated splitting, Quas, Thieullen and Zarrabi introduced the concept of strong fast invertibility for linear cocycles in 2019.
Florian Noethen
doaj   +1 more source

A Perron-type theorem for nonautonomous difference equations with nonuniform behavior

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2015
We show that if the Lyapunov exponents of a linear difference equation are limits, then the same happens with the Lyapunov exponents of the solutions of the nonlinear equations for any sufficiently small nonlinear perturbation.
Hailong Zhu, Can Zhang, Yongxin Jiang
doaj   +1 more source

Zero Watermarking Using Convolutional Additive Self‐Attention Vision Transformer and Discrete Wavelet Transform‐Variance‐Based Feature Descriptor for Medical Image Security in Mobile Healthcare Services

open access: yesAdvanced Intelligent Systems, EarlyView.
A zero‐watermarking algorithm that combines a refined convolutional additive self‐attention vision transformer (CAS‐ViT) with a discrete wavelet transform variance‐based feature descriptor (DVFD) is proposed for protecting the privacy of medical images in mobile healthcare services.
Pei Liu   +6 more
wiley   +1 more source

Error analysis of QR algorithms for computing Lyapunov exponents [PDF]

open access: yes, 2001
Lyapunov exponents give valuable information about long term dynamics. The discrete and continuous QR algorithms are widely used numerical techniques for computing approximate Lyapunov exponents, although they are not yet supported by a general error ...
McDonald, E.J., Higham, D.J.
core  

Exploiting Ferroelectric and Spintronic Dynamics for Neural Network Computation

open access: yesAdvanced Intelligent Systems, EarlyView.
Ferroelectric and spintronic devices, relying on the control of polarization and magnetization, offer intrinsically fast, durable, energy‐efficient, and low‐latency building blocks for analog in‐memory computing. The hysteretic dynamics of an order parameter are leveraged to provide nonvolatile, multistate memory and nonlinear switching. Brain‐inspired
Dashiell Harrison   +4 more
wiley   +1 more source

COVARIANT LYAPUNOV EXPONENTS FOR THE MIXMASTER [PDF]

open access: yesThe Tenth Marcel Grossmann Meeting, 2006
The dynamics of the Mixmaster Universe is analized in a covariant picture via Misner--Chitre-like variables for an ADM Hamiltonian approach. The system outcomes as isomorphic to a billiard on the Lobachevsky plane and Lyapunov exponents are calculated explicitly.
Imponente, Giovanni, Montani, Giovanni
openaire   +2 more sources

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