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With application of the structural equation modeling, the weights of criteria and indicators of evaluation index system of brownfield redevelopment project are assigned by calculating the factor loading of the model. The fit index of the model, such as RMSEA (Root Mean Square of Approximate Error), IFI (Incremental Fit Index), CFI (Relative Fit Index), and NNFI (Non-standard Fitting Index) are tested...
The maximum power point tracking (MPPT) strategy has great impact on the efficiency of the Variable-Speed Wind Turbine Generator (WTG) when the wind speed is below the rated speed. Now the MPPT has two control methods that are power control method and rotor speed control method. All of them had not used the wind speed information because the wind speed measured is usually inaccurate. In this paper,...
The recent research progress of project portfolio decision-making (PPDM) is reviewed, and the strengths and weaknesses of current approaches are discussed. Different research issues and methods are summarized into one general framework. To tackle the limitations and shortcomings of existing work, an ecology-based framework is proposed by applying ecology theories and methods into project portfolio...
Symbolic data analysis is a new data mining technology. Interval number is a most important type of symbolic data. An interval number can be seen as an ordered pair composed of its center and radius, where the radius can be considered as its limit error. A factor analysis is firstly performed on the center sample data matrix, from which the center factor scores are obtained. The limit errors of the...
Unit load system of power plant is a double-input and double-output multivariable system with big inertia. The conventional control method cannot get satisfactory result. In this paper, the system is firstly decomposed into two double-input and single-output subsystems and two MAC controllers are designed accordingly. By solving the two controllerspsila equations, predictive control sequence is obtained...
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