refinement structure

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• Crystal structure of boron-rich metal borides — Two single crystals of YB66 (1 cm diameter) grown by floating zone technique using (100) oriented seeds. In the top crystal, the seed (left from the black line) has same diameter as the crystal. In the bottom crystal (sliced), the seed is much… …   Wikipedia

• Adaptive mesh refinement — This article is about the use of adaptive meshing in numerical analysis. See Subdivision surface for the use of adaptive techniques in Computer Graphics modelling. In numerical analysis, adaptive mesh refinement is a method of adaptive meshing.… …   Wikipedia

• Rietveld refinement — is a technique devised by Hugo Rietveld for use in the characterisation of crystalline materials. The neutron and x ray diffraction of powder samples results in a pattern characterised by peaks in intensity at certain positions. The height, width …   Wikipedia

• Nucleic acid tertiary structure — Example of a large catalytic RNA. The self splicing group II intron from Oceanobacillus iheyensis.[1] The tertiary structure of a nucleic acid is its precise three dimensional structure, as defined by the atomic coordinates.[2] …   Wikipedia

• Secondary structure prediction — is a set of techniques in bioinformatics that aim to predict the local secondary structures of proteins and RNA sequences based only on knowledge of their primary structure amino acid or nucleotide sequence, respectively. For proteins, a… …   Wikipedia

• Disjoint-set data structure — In computing, a disjoint set data structure is a data structure that keeps track of a set of elements partitioned into a number of disjoint (nonoverlapping) subsets. A union find algorithm is an algorithm that performs two useful operations on… …   Wikipedia

• Crystal structure of boron-rich metal borides (data page) — Contents 1 Table I 2 Table II 3 Table III 4 Table IVa …   Wikipedia

• Urban structure — is the arrangement of land use in urban areas. Sociologists, economists, and geographers have developed several models, explaining where different types of people and businesses tend to exist within the urban setting. Three models are described… …   Wikipedia

• De novo protein structure prediction — In computational biology, de novo protein structure prediction is the task of estimating a protein s tertiary structure from its sequence alone. The problem is very difficult and has occupied leading scientists for decades. Research has focused… …   Wikipedia

• The Structure of Scientific Revolutions — (1962), by Thomas Kuhn, is an analysis of the history of science. Its publication was a landmark event in the sociology of knowledge, and popularized the terms paradigm and paradigm shift .HistoryThe work was first published as a monograph in the …   Wikipedia

• Progressive refinement — is a ray tracing algorithm that quickly reveals coarse structure of an image, and gradually reveals additional detail over time.The first pixel is rendered as a single rectangle occupying the entire work area. The second through fourth each… …   Wikipedia