item-by-item method
3.We give a new method to handle the problems of item bank composing test papers by use of genetic algorithm, discuss multi-object parameter optimizing problem with restrictions when we use genetic algorithm, and put forward the concept of fonction block, introduce a new code method, cross operator, and mutation operator.
4.The writer attempts to analyze and summarize the item of JJ Rice Processing Enterprise by evaluating its original intention of development and its effect, combing macro-economics, micro-economics, management, the theories of marketing and related theories within investment evaluation, and making use of various effective tools ,and measures including social survey, data index, finance estimate and plan, net current value method, internal guerdon rate and the recovery period of investment and balance analysis of profit and loss.
5.A synthetic PI sliding mode control method used for load frequency control of multiarea power systems has been proposed, the method has the advantages of PI and sliding mode control, sliding mode superface with integral item make the system can reach on sliding mode from initial time. After reaching on sliding mode, system is controlled by PI control based on ACEN.
