منابع مشابه
Dense periodic packings of tori.
Dense packings of nonoverlapping bodies in three-dimensional Euclidean space R(3) are useful models of the structure of a variety of many-particle systems that arise in the physical and biological sciences. Here we investigate the packing behavior of congruent ring tori in R(3), which are multiply connected nonconvex bodies of genus 1, as well as horn and spindle tori. Specifically, we analytic...
متن کاملProducing dense packings of cubes
In this paper we consider the problem of packing a set of d-dimensional congruent cubes into a sphere of smallest radius. We describe and investigate an approach based on a function called the maximal inflation function. In the three-dimensional case, we localize the contact between two inflated cubes and we thus improve the efficiency of calculating . This approach and a stochastic algorithm a...
متن کاملDense Sphere Packings from New Codes
The idea behind the coset code construction (see [G.D. Forney, Coset Codes, IEEE Transactions on Information Theory, Part I: Introduction and Geometrical Classification, pp. 1123–1151; Part II: Binary lattices and related codes, pp. 1152–1187; F.R. Kschischang and S. Pasupathy, IEEE Transactions on Information Theory 38 (1992), 227–246.]) is to reduce the construction of sphere packings to erro...
متن کاملInteger and Fractional Packings in Dense Graphs
Let H 0 be any xed graph. For a graph G we deene H 0 (G) to be the maximum size of a set of pairwise edge-disjoint copies of H 0 in G. We say a function from the set of copies of H 0 in G to 0; 1] is a fractional H 0-packing of G if
متن کاملDense sphere packings from optimized correlation functions.
Elementary smooth functions (beyond contact) are employed to construct pair correlation functions that mimic jammed disordered sphere packings. Using the g_{2} -invariant optimization method of Torquato and Stillinger [J. Phys. Chem. B 106, 8354 (2002)], parameters in these functions are optimized under necessary realizability conditions to maximize the packing fraction varphi and average numbe...
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ژورنال
عنوان ژورنال: Brazilian Journal of Physics
سال: 2006
ISSN: 0103-9733
DOI: 10.1590/s0103-97332006000500003