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Aiming at the existing problems of column-beam joint put forward the new wedge-box joint. The new joint shape is simple, avoid the inconvenience that add diaphragm in the square tube, as well as to the late process of building interior decoration, the way of joints force transmission is clear, mechanical and seismic performance is good, from the external shape is better than the traditional internal...
Due to the complexity of large span double-arched roof structure, Chinese load codes are not enough for the design. Other method should be used to ascertain the wind load on the roof structure. Computational fluid dynamic (CFD) is a newly developed research method for wind loads. The distribution of wind pressure and wind environment on the roofs of large span double-arched structure were computed...
In the decomposition of mixed pixels of hyperspectral remote sensing images, the nonnegative matrix factorization (NMF) easily results in the problem of local minimum, owing to the influence of algorithm initializations. To solve the problem, this paper presents a new scheme based on the modified NMF (MNMF) algorithm and genetic algorithm (GA) to achieve the decomposition of mixed pixels. The endmembers...
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