Multiple Depth DB Tables Indexing on the Sphere
نویسندگان
چکیده
منابع مشابه
a study on construction of iranian life tables: the case study of modified brass logit system
چکیده ندارد.
15 صفحه اولTables of sphere packings and spherical codes
Tke theta function of a sphere packing gives the number of centers at each distance from the origin. The theta functions of a number of important packings (An, D, , E,, the Leech lattice, and others) and tables of the first fifty or so of their coefficients are given in this paper.
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We introduce indexing of tables referencing complex structures such as digraphs and spatial objects, appearing in genetics and other data intensive analysis. The indexing is achieved by extracting dimension schemas from the referenced structures. The schemas and their dimensionality are determined by proper coloring algorithms and the duality between all such schemas and all such possible prope...
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This is an algorithm for finding neighbors for point objects that can freely move and have no predefined position. The query sphere consists of a center location and a given radius within which nearby objects must be found. Space is discretized in cubic cells. This algorithm introduces an indexing scheme that gives the list of all the cells making up the query sphere, for any radius and any cen...
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We describe a method to subdivide the surface of a sphere into spherical triangles of similar, but not identical, shapes and sizes. The Hierarchical Triangular Mesh (HTM) is a quad-tree that is particularly good at supporting searches at different resolutions, from arc seconds to hemispheres. The subdivision scheme is universal, providing the basis for addressing and for fast lookups. The HTM p...
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ژورنال
عنوان ژورنال: Advances in Astronomy
سال: 2010
ISSN: 1687-7969,1687-7977
DOI: 10.1155/2010/524534