Results 1 to 10 of about 51,902 (232)
Logical and Algebraic Characterizations of Rational Transductions [PDF]
Logical Methods in Computer Science, 2019 Rational word languages can be defined by several equivalent means: finite state automata, rational expressions, finite congruences, or monadic second-order (MSO) logic.
Emmanuel Filiot +2 more
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Thermal Emission Control via Bandgap Engineering in Aperiodically Designed Nanophotonic Devices [PDF]
Nanomaterials, 2015 Aperiodic photonic crystals can open up novel routes for more efficient photon management due to increased degrees of freedom in their design along with the unique properties brought about by the long-range aperiodic order as compared to their periodic ...
Enrique Maciá
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Compressive behaviour of cellular structures with aperiodic order
Results in Materials, 2022 Cellular structures are commonplace in engineering applications, such as aerospace and medical engineering, because material-air composites offer significant mechanical benefits, for example due to improved weight-to-strength ratio.
R.J. Moat +5 more
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Mechanical characterisation of novel aperiodic lattice structures
Materials & Design, 2023 This paper compares the mechanical properties of a class of lattice metamaterials with aesthetically-pleasing patterns that are governed by the mathematics of aperiodic order.
Chikwesiri Imediegwu +5 more
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Aperiodicity in equilibrium systems: Between order and disorder [PDF]
Acta Physica Polonica A, 2013 Spatial aperiodicity occurs in various models and material s. Although today the most well-known examples occur in the area of quasicrystals, other applications might also be of interest.
Aernout C. D, Van Enter
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Spectral notions of aperiodic order
Discrete and Continuous Dynamical Systems - Series S, 2017 32 pages, with 2 figures; review-style ...
Michael Baake, Daniel Lenz
exaly +3 more sources
Highly symmetric aperiodic structures -INVITED [PDF]
EPJ Web of Conferences, 2021 The symmetries of periodic structures are severely constrained by the crystallographic restriction. In particular, in two and three spatial dimensions, only rotational axes of order 1, 2, 3, 4 or 6 are possible.
Grimm Uwe
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Aperiodicity, Star-freeness, and First-order Logic Definability of Operator Precedence Languages [PDF]
Logical Methods in Computer Science, 2023 A classic result in formal language theory is the equivalence among non-counting, or aperiodic, regular languages, and languages defined through star-free regular expressions, or first-order logic.
Dino Mandrioli +2 more
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Group Theory of Syntactical Freedom in DNA Transcription and Genome Decoding
Current Issues in Molecular Biology, 2022 Transcription factors (TFs) are proteins that recognize specific DNA fragments in order to decode the genome and ensure its optimal functioning. TFs work at the local and global scales by specifying cell type, cell growth and death, cell migration ...
Michel Planat +5 more
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The Curled Up Dimension in Quasicrystals
Crystals, 2021 Most quasicrystals can be generated by the cut-and-project method from higher dimensional parent lattices. In doing so they lose the periodic order their parent lattice possess, replaced with aperiodic order, due to the irrationality of the projection ...
Fang Fang, Richard Clawson, Klee Irwin
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