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Based on the analysis of the shortcomings of current online virtual stores, the concept of the three-dimensional ecommerce model is proposed by combining with the new demands of e-commerce and features of Web3D technology in this paper which emphasizes the inevitability of the usage of Web3D technologies in e-commerce, On this basis, the paper describes a designing strategy of virtual online shopping...
A new image recognition and interpretation system for the blurred image is proposed in this paper. Some important rules of complex moments for the blurred image are presented and proofed. The proposed system is composed of regional segmentation, image recognition and image interpretation process. As a pre-processing in the regional segmentation process, an input image is divided into some proper regions...
According to the mechanical and deformation characteristics of inverted triangular truss under seismic loads, the calculation model of truss dynamic response is established and the corresponding calculation equations are derived. Making use of finite element software ANSYS, a finite element program of truss dynamic response under seismic loads is made. The finite element analysis model of inverted...
Fracturing sand control is a complex sand prevention method. There are so many influence factors which can not be modeled by the structuring models in both the decision and the operation process. Expert system for the optimization design of the fracturing sand control can simulate the thinking patterns of those experts, collect the computer knowledge and models in the field, apply the fuzzy mathematics...
This paper presents eight casing failure modes and the corresponding limit state equations for casing in high-pressure gas well. The manufacture imperfections are considered by introducing the new calculation formulas of casing strength. According to the distribution regularities of casing performance properties, the casing reliability can be calculated with the known distribution of casing strength...
As there are a lot of factors with complexity and uncertainty, the process of coal-bed methane under balanced drilling has great risk. In order to overcome the one-sidedness and limitation caused by single evaluation method, the combined evaluation model for coal-bed methane under balanced drilling is established based on the combined evaluation theory. And on the basis of the software platform of...
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