Results 21 to 30 of about 6,876 (161)

Satin Bowerbird Optimization Algorithm with Chaos [PDF]

open access: yesWarasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, 2020
The Satin Bowerbird Optimization (SBO) is a recently developed meta-heuristic optimization algorithm which was inspired by the Satin Bowerbirds living in Australia’s rainforests and other mesic habitats.
Tanachapong Wangkhamhan
doaj  

A Class of Quadratic Polynomial Chaotic Maps and its Application in Cryptography

open access: yesIEEE Access, 2019
At present, the probability density of most chaotic systems is unknown, and the statistical characteristics of chaotic sequences cannot be described by the probability density of chaotic maps. This paper constructs a class of quadratic polynomial chaotic
Shuqin Zhu   +3 more
doaj   +1 more source

BER Performance Improvement of Dual Chaotic Maps Based on STBC Communication System

open access: yesAl-Khawarizmi Engineering Journal, 2022
Sensitive information of any multimedia must be encrypted before transmission. The dual chaotic algorithm is a good option to encrypt sensitive information by using different parameters and different initial conditions for two chaotic maps.
Lwaa Faisal Abdulameer   +2 more
doaj   +1 more source

Color watermarking algorithm combining the quantum discrete cosine transform with the sinusoidal–tent map

open access: yesFrontiers in Physics
To overcome the drawbacks of the existing sinusoidal map and tent map, this paper proposes the design of a sinusoidal–tent (ST) map. The test results indicate that the new chaotic system exhibits more significant advantages in chaos control.
Ping-Ping Zeng   +4 more
doaj   +1 more source

Permutation Entropy of Weakly Noise-Affected Signals

open access: yesEntropy, 2021
We analyze the permutation entropy of deterministic chaotic signals affected by a weak observational noise. We investigate the scaling dependence of the entropy increase on both the noise amplitude and the window length used to encode the time series. In
Leonardo Ricci, Antonio Politi
doaj   +1 more source

Extended integer tent maps and dynamic hash function

open access: yesTongxin xuebao, 2010
Based on the analysis of uniform distribution property of the extended integer tent maps,a novel dynamic hash function with the output length of 160bit was constructed.In addition,the MD structure was improved so that the capacity of collision resistance
LIU Jian-dong
doaj   +2 more sources

A survey of tools detecting the dynamical properties of one-dimensional families

open access: yesAdvances in Electrical and Electronic Engineering, 2017
One-dimensional dynamical systems attract researches for more than half a century and the topic was inspired by many real problems. Mainly piecewise linear and polynomial maps were considered and researched under several motivations from different ...
Marek Lampart, Tomas Martinovic
doaj   +1 more source

Search for invariant sets of the generalized tent map

open access: yesJournal of Difference Equations and Applications, 2022
This paper describes a predictive control method to search for unstable periodic orbits of the generalized tent map. The invariant set containing periodic orbits is a repelling set with a complicated Cantor-like structure. Therefore, a simple local stabilization of the orbit may not be enough to find a periodic orbit, due to the small measure of the ...
Kimberly Ayers   +4 more
openaire   +2 more sources

Fractal Tent Map with Application to Surrogate Testing

open access: yesFractal and Fractional
Discrete chaotic maps are a mathematical basis for many useful applications. One of the most common is chaos-based pseudorandom number generators (PRNGs), which should be computationally cheap and controllable and possess necessary statistical properties,
Ekaterina Kopets   +5 more
doaj   +1 more source

A Novel Color Image Encryption Scheme Using Rectangular Transform-Enhanced Chaotic Tent Maps

open access: yesIEEE Access, 2017
In recent years, the chaos-based cryptographic algorithms have attracted a lot of attention. Specially, chaotic tent map (CTM)-based schemes show some good performances in randomness properties and security level.
Xiaolin Wu   +3 more
doaj   +1 more source

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