Results 141 to 150 of about 9,353 (233)
Journal of Geophysical Research: Oceans, Volume 131, Issue 6, June 2026.Abstract Understanding the multiscale dynamics of ocean surface turbulence requires diagnostics that reliably characterize variability at scales both larger and smaller than the Rossby radius of deformation. This study evaluates the consistency and interpretability of second‐order velocity structure functions derived from Eulerian and Lagrangian ...
I. Leimann +7 more
wiley +1 more source
JAWRA Journal of the American Water Resources Association, Volume 62, Issue 3, June 2026.ABSTRACT Noise is an inherent component of observed time series and may be treated either as an undesirable disturbance or as an intrinsic system characteristic containing information about underlying dynamics. In the latter perspective, noise behavior must be analyzed and quantified, and the model used for time‐series synthesis should be compatible ...
Shirin Studnicka, Deli Li, Umed Panu
wiley +1 more source
Hidden Fine‐Scale Transport Pathways and Biological Connectivity Revealed by SWOT
Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.Abstract Oceanic currents redistribute nutrients, phytoplankton, and other biogenic materials, fundamentally shaping marine biodiversity and ecosystem functioning. Yet, the topology of fine‐scale material transport remains poorly resolved due to limitations in high‐resolution flow observations.
Yunchen Liu +6 more
wiley +1 more source
AIP Advances, 2018 New hyperchaotic nonlinear model inclusive complex variables have been introduced in this paper. This model has attributes that differentiate it from several of the models contemplated as of late in literature, for example, (i) this model is a high ...
Emad E. Mahmoud +2 more
doaj +1 more source
PID‐Like Robust Control of Non‐Minimum Phase Robotic Manipulators
International Journal of Robust and Nonlinear Control, Volume 36, Issue 8, Page 4490-4503, 25 May 2026.ABSTRACT This paper proposes an output‐feedback tracking controller for non‐minimum phase nonlinear systems with unknown uncertainties and external disturbances, where not all states are measurable, and the zero dynamics are unstable. The approach combines a backstepping‐based stabilizing state‐feedback law with a cascade extended high‐gain observer ...
Mohammad Al Saaideh +2 more
wiley +1 more source
Lyapunov exponents of systems evolving on quadratic groups
, 2003 In this paper we show some symmetry properties of Lyapunov exponents of a dynamical system when the linearized problem evolves on a quadratic group, (XHX)-H-T=H, with H orthogonal.
LOPEZ, Luciano, DIECI L
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EEG Analysis in Structural Focal Epilepsy Using the Methods of Nonlinear Dynamics (Lyapunov Exponents, Lempel-Ziv Complexity, and Multiscale Entropy). [PDF]
ScientificWorldJournal, 2020 Yakovleva TV +11 more
europepmc +1 more source
Recurrence and Lyapunov Exponents
, 2008 We prove two inequalities between the Lyapunov exponents of a dieomorphism and its local recurrence properties.
S. Vaienti, B. Saussol, S. Troubetzkoy
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Determining Lyapunov exponents from a time series
, 1985 International audienceWe present the first algorithms that allow the estimation of non-negative Lyapunov exponents from an experimental time series. Lyapunov exponents, which provide a qualitative and quantitative characterization of dynamical behavior ...
Vastano, John +3 more
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Extended Lyapunov Exponents for Second Order Systems
, 1992 It is shown that the concept of the Lyapunov exponent can be extended to include an imaginary part. A numerical technique used to calculate these extended Lyapunov exponents for second order systems is presented.
Horn, Janice M.
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