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Analysis of fuel consumption on orbit satellite is presented. The fuel consumption model is nonlinear based on the orbit thruster and attitude control thrusters' misalignment, and is assumed to have unknown dynamics. The issue regarding as the fuel consumption of orbit optimization can be converted to multi-variable optimization with constraint. A modification of the Analytic Hierarchy Process (AHP)...
Guanzhong-Tianshui Economic Zone has a unique position and advantage in china. It is one of the three important economic zones in the west part in china. This article is based on the regional Competitiveness theory, use the method of factor analysis and compare guanzhong — Tianshui Economic Zone with the Western relatively developed provinces to making regional competitiveness rankings. According...
Water quality model is a useful tool to evaluate the future state of river water through evaluation of actual pollution loading or different management options. Based on the human brain physiology research, artificial neural network(ANN), which simulates the structure and mechanism of the human brain, is a kind of dynamic information processing system that eventually achieves certain functions of...
The topic of tuition fees has recently sparked heated discussions in various media. Based on China's national conditions, this article collected elevant data, such as national student average funding, training costs, household disposable income and did the quantitative analysis for tuition standards of several types of schools, then built a Multi-level fuzzy evaluation model, which regarded the tuition...
Aiming at the features and the complexity of the inter-basin water diversion project, the multiobjective hierarchical structure model was established based on numerous assessment indexes and initial layout schemes. The model was solved through the improved AHP method with the optimum transfer matrix. The proposed method was successfully applied to the construction site layout of the middle route of...
Similarity join is a useful primitive operation underlying many applications, such as near duplicate Web page detection, data integration, and pattern recognition. Traditional similarity joins require a user to specify a similarity threshold. In this paper, we study a variant of the similarity join, termed top-k set similarity join. It returns the top-k pairs of records ranked by their similarities,...
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