Journal ArticleDOI
Statistical mechanics of cellular automata
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Analysis is given of ''elementary'' cellular automata consisting of a sequence of sites with values 0 or 1 on a line, with each site evolving deterministically in discrete time steps according to p definite rules involving the values of its nearest neighbors.Abstract:
Cellular automata are used as simple mathematical models to investigate self-organization in statistical mechanics. A detailed analysis is given of "elementary" cellular automata consisting of a sequence of sites with values 0 or 1 on a line, with each site evolving deterministically in discrete time steps according to definite rules involving the values of its nearest neighbors. With simple initial configurations, the cellular automata either tend to homogeneous states, or generate self-similar patterns with fractal dimensions \ensuremath{\simeq} 1.59 or \ensuremath{\simeq} 1.69. With "random" initial configurations, the irreversible character of the cellular automaton evolution leads to several self-organization phenomena. Statistical properties of the structures generated are found to lie in two universality classes, independent of the details of the initial state or the cellular automaton rules. More complicated cellular automata are briefly considered, and connections with dynamical systems theory and the formal theory of computation are discussed.read more
Citations
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Journal ArticleDOI
A novel chaotic based image encryption using a hybrid model of deoxyribonucleic acid and cellular automata
TL;DR: This work aims to propose a new approach based on a hybrid model of the Tinkerbell chaotic map, deoxyribonucleic acid (DNA) and cellular automata (CA) to encrypt the plain-image pixels.
Journal ArticleDOI
Population dynamics and pattern formation in theoretical populations
TL;DR: In this article, simple individual-based models of population dynamics and spatial patterns are developed using cellular automata theory, assuming that individuals within a population are distributed in space and that important interactions among individuals take place over some predefined local scale.
Journal ArticleDOI
The threshold regime of finite volume bootstrap percolation
Raphaël Cerf,Francesco Manzo +1 more
TL;DR: In this article, the threshold regime for bootstrap percolation in a d-dimensional box of diameter L with parameters p and l, where 3 ⩽l⩽ d, is L∼ exp ° (l−1) (Cp −1/(d−l+1) ), where exp is the exponential iterated l−1 times and C is bounded from above and from below by two positive constants depending on d, l only.
Local Structure Theory for Cellular Automata.
TL;DR: The invariant measures of a cellular automaton and the stability of these measures may be obtained from the local structure theory, which appears to be a powerful method for characterization and classification of cellular automata.
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Supercomputing with spin-polarized single electrons in a quantum coupled architecture
TL;DR: How the spin-polarized single-electron logic devices work, along with the associated circuits and architecture are described, and a new fabrication technique is proposed which is much more compatible with the demands of the technology than conventional nanofabrication methods.
References
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Book
Introduction to Automata Theory, Languages, and Computation
TL;DR: This book is a rigorous exposition of formal languages and models of computation, with an introduction to computational complexity, appropriate for upper-level computer science undergraduates who are comfortable with mathematical arguments.
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The Chemical Basis of Morphogenesis
TL;DR: In this article, it is suggested that a system of chemical substances, called morphogens, reacting together and diffusing through a tissue, is adequate to account for the main phenomena of morphogenesis.
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On Computable Numbers, with an Application to the Entscheidungsproblem
TL;DR: This chapter discusses the application of the diagonal process of the universal computing machine, which automates the calculation of circle and circle-free numbers.
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Metabolic stability and epigenesis in randomly constructed genetic nets
TL;DR: The hypothesis that contemporary organisms are also randomly constructed molecular automata is examined by modeling the gene as a binary (on-off) device and studying the behavior of large, randomly constructed nets of these binary “genes”.
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Diffusion-limited aggregation, a kinetic critical phenomenon
Abstract: A model for random aggregates is studied by computer simulation The model is applicable to a metal-particle aggregation process whose correlations have been measured previously Density correlations within the model aggregates fall off with distance with a fractional power law, like those of the metal aggregates The radius of gyration of the model aggregates has power-law behavior The model is a limit of a model of dendritic growth