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This paper establishes an evaluation system of aviation equipment affordability at four levels: the target level, the criterion level, the integrated parameter level and the basic parameter level. It decomposes the final target into several elementary parameters which can be estimated. Analyzing the importance of each level index by using the analytic hierarchy process, and calculating the weight...
In this study, a centrifugal cooling fan on multiple unit train (MU) was designed based on one-dimensional calculation and three-dimensional numerical simulation. Three-dimensional model was presented based on the one-dimensional calculation. Numerical simulation and thorough analysis were carried out on the blower with software NUMECA. Varieties of projects were considered, and the performance experiment...
To study the evolution of enterprise strategy synergistic effect, this paper defined enterprise strategy synergistic effect and drew mathematical description. Quadratic nonlinearity differential equation is used to depict self-organization evolution process of enterprise strategy synergistic effect. This paper issued that strategy synergistic effect would be in sustainable benign development when...
By making use of V-Realm Builder toolbox of matlab7.1, in this research, Skoda Vehicle Dynamics Visualization (SVDV) was built up. By combining with Simulink, a dynamic system, which was jointed into SVDV to simulate and analyze, was also established. The simulation results suggest that the SVDV can simulate the dynamics characteristics of real-life running vehicles accurately, thus providing the...
An extracellular biopolymer (PS-2) produced by Pseudomonas fluorescence C-2 was used as an alternative biosorbent to remove toxic Pb(II) metallic ions from aqueous solutions. The prepared biosorbent PS-2 were characterized by FTIR and SEM. The effect of experimental parameters such as pH, dosage of biosorbent , Pb(II) initial concentration and contact time on the adsorption was studied. It was found...
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