Results 41 to 50 of about 9,922,765 (307)

Modification of the Logistic Map Using Fuzzy Numbers with Application to Pseudorandom Number Generation and Image Encryption

open access: yesEntropy, 2020
A modification of the classic logistic map is proposed, using fuzzy triangular numbers. The resulting map is analysed through its Lyapunov exponent (LE) and bifurcation diagrams.
Lazaros Moysis   +6 more
doaj   +1 more source

Lagrangian study of surface transport in the Kuroshio Extension area based on simulation of propagation of Fukushima-derived radionuclides [PDF]

open access: yesNonlinear Processes in Geophysics, 2014
Lagrangian approach is applied to study near-surface large-scale transport in the Kuroshio Extension area using a simulation with synthetic particles advected by AVISO altimetric velocity field.
S. V. Prants   +2 more
doaj   +1 more source

Ascertaining when a basin is Wada: the merging method

open access: yesScientific Reports, 2018
Trying to imagine three regions separated by a unique boundary seems a difficult task. However, this is exactly what happens in many dynamical systems showing Wada basins.
Alvar Daza   +2 more
doaj   +1 more source

Statistical analysis of Lagrangian transport of subtropical waters in the Japan Sea based on AVISO altimetry data [PDF]

open access: yesNonlinear Processes in Geophysics, 2017
Northward near-surface Lagrangian transport of subtropical waters in the Japan Sea frontal zone is simulated and analysed based on altimeter data for the period from 2 January 1993 to 15 June 2015.
S. V. Prants   +2 more
doaj   +1 more source

Realization of multivariable nonlinear systems via the approaches of differential forms and differential algebra [PDF]

open access: yes, 2010
summary:In this paper differential forms and differential algebra are applied to give a new definition of realization for multivariable nonlinear systems consistent with the linear realization theory.
Moog, Claude H.   +5 more
core   +1 more source

Acoustic Phonon Wave Attenuation in One-Dimensional Antiferromagnet: Effects of DM Interaction on Magnon-Phonon Coupling Factor

open access: yesAdvances in Condensed Matter Physics
The study of one-dimensional (1D) multiferroic spin chain systems exhibiting magnetoelectric coupling continues to be a primary emphasis in condensed matter physics.
Erna Leticia Tchinda Ngounou   +6 more
doaj   +1 more source

Jamming by compressing a system of granular crosses

open access: yesEPJ Web of Conferences, 2017
A disordered stress-free granular packing can be jammed, transformed into a mechanically rigid structure, by increasing the density of particles or by applying shear deformation.
Zheng Hu   +3 more
doaj   +1 more source

Complexity of cortical wave patterns of the wake mouse cortex

open access: yesNature Communications, 2023
The cerebral cortex has ongoing electrical activities with rich and complex patterns in space and time. Here, the authors use optical voltage imaging in mice and computational methods, relating these complexities to different levels of wakefulness.
Yuqi Liang   +6 more
doaj   +1 more source

Observability of nonlinear systems [PDF]

open access: yesMathematica Bohemica, 2006
Summary: Observability of a general nonlinear system -- given in terms of an ODE \(\dot {x}=f(x)\) and an output map \(y=c(x)\) -- is defined as in linear system theory (i.e.\,if \(f(x)=Ax\) and \(c(x)=Cx\)). In contrast to standard treatment of the subject we present a criterion for observability which is not a generalization of a known linear test ...
openaire   +2 more sources

Perturbation solutions of fifth order oscillatory nonlinear systems [PDF]

open access: yes, 2011
Oscillatory systems play an important role in the nature. Many engineering problems and physical systems of fifth degrees of freedom are oscillatory and their governing equations are fifth order nonlinear differential equations.
Akbar, M. Ali Ali   +1 more
core   +1 more source

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