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Based on the current situation of Tianjin's water demand-supply system, this paper proposed a new four-dimensional water resources system, and proved that the system is chaotic. The dynamical analysis of the system will be studied by means of Lyapunov-exponent, bifurcation diagrams. Linear feedback control techniques are used to stabilize and control the new system, and the system is stabilized to...
Setting up a reasonable ecological value evaluation system for residential quarters is important to improve people's living level. An evaluating index system with contains 2 factors, 12 sub-factors, and 50 elements is established. Then we use FAHP in determining the weights of the factors and sub-factors, which can reflect the human thinking style. At last, we establish a multi-grade fuzzy synthetical...
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