To solve the problem of city classification in sustained development, index system of city classification has been established, in defining sourced - typed city, the application of probabilistic neural network was studied, the data of index system were as imputting vector and the results of classification were as outputting vector in neural network,the program was developed.
By employing the case of Shijiazhuang city, classification element as infection degree of center city, traffic, basic establishment and natural condition are chosen, the land levels are graded.
The urban benchmark land price,a crucial component in national land pricing system,equals to the average price of regional land access calculated on the basis of city classification with abstractness and limitations,which need to be dynamically supervised and analyzed.
After three years investigation,it was found that there were 47 families,119 species ground covering plants adaptive in Hefei city.Classification based on morphology and application of the plants was made and choice on species and arrangement of the plants were also discussed.
To solve the problem of city classification in sustained development, index system of city classification has been established, in defining sourced - typed city, the application of probabilistic neural network was studied, the data of index system were as imputting vector and the results of classification were as outputting vector in neural network,the program was developed. The cities of Heilongjiang province was classified by neural network, and the result of classif...
The article put forwards the background of object control of water environment in water pollution prevention. We analysis difficulties in achieving object control of water environment at present situation. So we bring forward a new viewpoint which relates to the object control of total water pollution which should based on city classification(we should sufficiently think over dominated effect on water environment capacity, basing on different governmental extent investment and different environm...