Results 31 to 40 of about 1,121 (233)
A Class of Quadratic Polynomial Chaotic Maps and its Application in Cryptography
IEEE 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
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Permutation Entropy of Weakly Noise-Affected Signals
Entropy, 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
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Frontiers in PhysicsTo 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
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A survey of tools detecting the dynamical properties of one-dimensional families
Advances 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
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Extended integer tent maps and dynamic hash function
Tongxin 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
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Spectral decomposition of the tent map with varying height [PDF]
Chaos: An Interdisciplinary Journal of Nonlinear Science, 1998 The generalized spectral decomposition of the Frobenius–Perron operator of the tent map with varying height is determined at the band-splitting points. The decomposition includes both decay onto the attracting set and the approach to the asymptotically periodic state on the attractor.
Subbiah, Suresh, Driebe, Dean J.
openaire +4 more sources
The role and implications of mammalian cellular circadian entrainment
FEBS Letters, EarlyView.At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley +1 more source
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
Image Encryption Using a New Hybrid Chaotic Map and Spiral Transformation
Entropy, 2023 Image encryption based on chaotic maps is an important method for ensuring the secure communication of digital multimedia on the Internet. To improve the encryption performance and security of image encryption systems, a new image encryption algorithm is
Mingfang Jiang, Hengfu Yang
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Fractal Tent Map with Application to Surrogate Testing
Fractal and FractionalDiscrete 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
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