نتایج جستجو برای: hat shape structure
تعداد نتایج: 1729879 فیلتر نتایج به سال:
In this paper, we study the symmetric travelling wave solutions of b-family Novikov equation. We show that equation can provide solutions, such as peakon, kink and smooth soliton solutions. particular, single two-peakon, stationary kink, anti-kink, two-kink, two-anti-kink, bell-shape hat-shape are presented in an explicit formula.
Abstract This paper presents a study of compressed thin-walled composite columns with an open cross-section. The tested specimens top-hat cross-section were made CFRP material. Two arrangements layers [0/-45/45/90]s and [90/0/90/0]s compared. focuses on the buckling phenomenon determination critical loads structure. It includes both numerical analyses using finite element method (FEM) validatio...
abstract— due to the daily mass production and the widespread variation of medical x-ray images, it is necessary to classify these for searching and retrieving proposes, especially for content-based medical image retrieval systems. in this paper, a medical x-ray image hierarchical classification structure based on a novel merging and splitting scheme and using shape and texture features is prop...
The half-a-tetratricopeptide repeat (HAT) motif is a helical repeat motif found in proteins that influence various aspects of RNA metabolism, including rRNA biogenesis, RNA splicing, and polyadenylation. This functional association with RNA suggested that HAT repeat tracts might bind RNA. However, RNA binding activity has not been reported for any HAT repeat tract, and recent literature has emp...
based on the randic suggestion of the resolution of a structure into shape, size, and function an index representing structure-catabolic fate relationships of amino acids is constructed. the index obtained by multiplying three factors; (nb2 + nr), nc and m; representing shape, size and function respectively, where nb2 = number of double bonds, nr = number of rings, nc = number of carbon atoms, ...
The histone acetyltransferase (HAT) p300/CBP is a transcriptional coactivator implicated in many gene regulatory pathways and protein acetylation events. Although p300 inhibitors have been reported, a potent, selective, and readily available active-site-directed small molecule inhibitor is not yet known. Here we use a structure-based, in silico screening approach to identify a commercially avai...
In this paper, we propose a recursive multiscale new white top-hat (NWTH) filter for small target detection in the infrared (IR) images. At first, NWTH filter based on white top-hat (WTH) transformation is performed for three scales (structure elements) with wide scale interval. For the discrimination of candidate target and background region, Threshold is calculated by using maximum value of t...
efficient mode shape extraction of fluid-structure systems is of particular interest in engineering. an efficient modified version of unsymmetric lanczos method is proposed in this paper. the original unsymmetric lanczos method was applied to general form of unsymmetric matrices, while the proposed method is developed particularly for the fluid-structure matrices. the method provides us with si...
The manifestation of point sources in the upcoming Planck maps is a direct reflection of the properties of the pixelized antenna beam shape for each frequency, which is related to the scan strategy, pointing accuracy, noise properties and map-making algorithm. In this paper we firstly compare analytically the three filters for the Planck point source extraction, namely, the adaptive top-hat fil...
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