Results 21 to 30 of about 322,733 (287)

Lyapunov exponent using Euler’s algorithm with applications in optimization problems [PDF]

open access: yesYugoslav Journal of Operations Research, 2022
The difference and differential equations have played an eminent part in nonlinear dynamics systems, but in the last two decades one-dimensional difference maps are considered in the forefront of nonlinear systems and the optimization of ...
Ashish   +4 more
doaj   +1 more source

A note on Verhulst's logistic equation and related logistic maps [PDF]

open access: yes, 2010
We consider the Verhulst logistic equation and a couple of forms of the corresponding logistic maps. For the case of the logistic equation we show that using the general Riccati solution only changes the initial conditions of the equation.
Elaydi S N   +6 more
core   +2 more sources

Intermittency Reinjection in the Logistic Map [PDF]

open access: yesSymmetry, 2022
Just below a Period-3 window, the logistic map exhibits intermittency. Then, the third iterate of this map has been widely used to explain the chaotic intermittency concept. Much attention has been paid to describing the behavior around the vanished fixed points, the tangent bifurcation, and the formation of the characteristic channel between the map ...
Sergio Elaskar   +2 more
openaire   +2 more sources

Deciphering a novel image cipher based on mixed transformed Logistic maps [PDF]

open access: yes, 2015
Since John von Neumann suggested utilizing Logistic map as a random number generator in 1947, a great number of encryption schemes based on Logistic map and/or its variants have been proposed. This paper re-evaluates the security of an image cipher based
Cheng, Ge   +4 more
core   +1 more source

Chaos From Switched-Capacitor Circuits: Discrete Maps [PDF]

open access: yes, 1987
A special-purpose analog computer made of switched-capacitor circuits is presented for analyzing chaos and bifurcation phenomena in nonlinear discrete dynamical systems modeled by discrete maps *n + t = fan)-Experimental results are given for four ...
Huertas Díaz, José Luis   +3 more
core   +1 more source

An Efficient Chaos-Based Image Encryption Technique Using Bitplane Decay and Genetic Operators

open access: yesSensors, 2022
Social networks have greatly expanded in the last ten years the need for sharing multimedia data. However, on open networks such as the Internet, where security is frequently compromised, it is simple for eavesdroppers to approach the actual contents ...
Ramesh Premkumar   +2 more
doaj   +1 more source

Energy and the Macrodynamics of Agrarian Societies

open access: yesLand, 2023
For the present work, we utilized Leslie White’s anthropological theory of cultural evolutionism as a theoretical benchmark for econometrically assessing the macrodynamics of energy use in agrarian societies that constituted the human civilization’s ...
Georgios Karakatsanis, Nikos Mamassis
doaj   +1 more source

A Maximum Entropy-Based Chaotic Time-Variant Fragile Watermarking Scheme for Image Tampering Detection

open access: yesEntropy, 2013
The fragile watermarking technique is used to protect intellectual property rights while also providing security and rigorous protection. In order to protect the copyright of the creators, it can be implanted in some representative text or totem. Because
Guo-Jheng Yang   +2 more
doaj   +1 more source

Stability and Fractal Patterns of Complex Logistic Map

open access: yesCybernetics and Information Technologies, 2014
The intent of this paper is to study the fractal patterns of one dimensional complex logistic map by finding the optimum values of the control parameter using Ishikawa iterative scheme.
Prasad Bhagwati, Katiyar Kuldip
doaj   +1 more source

Cryptanalysis of a family of self-synchronizing chaotic stream ciphers [PDF]

open access: yes, 2009
Unimodal maps have been broadly used as a base of new encryption strategies. Recently, a stream cipher has been proposed in the literature, whose keystream is basically a symbolic sequence of the (one-parameter) logistic map or of the tent map.
Alvarez, Gonzalo   +3 more
core   +2 more sources

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