نتایج جستجو برای: can geometry
تعداد نتایج: 2844759 فیلتر نتایج به سال:
seismic retrofit strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials and methods. it can be observed that new approaches to deal with more lateral forces are more innovative and more energy absorbent. in line with this, there is a growing trend toward the use of steel shear walls as a system with ...
background: the aim of this study was to investigate vertebral geometry changes and determine cutoff value of vertebral height to predict fractures. methods: in a cross-sectional study, 280 postmenopausal women recruited .in all subjects bone mineral density and radiog raphy of the lumbar spine performed. lateral radiographs were evaluated for identification of vertebral fractures, using a vali...
The work of M.C. Escher shows that the best artists can raise to an admirable degree of perfection some simple geometric facts. This talk, makes a journey into planar and three dimensional theory and shows geometric optimization problems where the theory alone provides the aesthetically pleasing solutions.
in current study, 63 samples of bat populations collected from differ regions were used for evaluating the geographic variations. twenty cranial and dental characters for traditional morphometric and landmarks method on the ventral, dorsal skull and mandible for geometry morphometric studies were used. statistical analyses of traditional morphometric and geometry morphometric data indicated low...
in reality, most structures involved in geotechnical engineering are three dimensional in nature, and although in many, plane strain or axisymmetric approximations are reasonable, there are some, for which 3-d treatment is required. the quantity of data, and the size of the various vectors and matrices involved in such analysis, increase dramatically. this has sever implications for computer r...
the subject of geometry and proportions has been regarded as an issue which has a close relationship with architecture. since the entire universe, living beings and the human geometry can be seen clearly, that’s why our unconscious essence has accustomed to these proportions whereby reflection of this mentality can be seen in the architect’s hands and thought in the architecture. it can witness...
Segmentation is an important step during 3-D building reconstruction from laser altimetry data. The objective is to group laser points into segments that correspond to planar surfaces, such as facets of building roofs or the (flat) terrain between buildings. A segmentation method is presented that was inspired by a raster-based algorithm in literature, but works on original (triangulated) laser...
semi-rigid aluminum containers are being used widely in food industries. they have wrinkle shaped walls for strengthening their physical structure. the objective of this study was to assess the effect of wrinkled parts on the heat transfer and temperature distribution of the containers by computational fluid dynamics (cfd) analysis. therefore, a precise designed geometry of the wrinkled walls c...
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