Based on the example of auto industry, the price gradient spatial control model is used to make empirical analysis of the substituting effect of non—tariff measures on tariff barrier and the con- clusion is arrived at that, under the situation of largely cutting tariff, non—tariff measures can effec- tively protect related industries.

By selecting the South-North line from urban central district to Baoshan district of Shanghai, and collecting housing price data along the line where both the second-hand houses and newly developed houses are located inside the inner ring, between the inner ring and the middle ring, between the middle ring and the outer ring, outside the outer ring, the authors analyze the price gradients.

And then,according to fact,this paper propse merchandise step type price,and set up optimal production plan model.

In this paper,a moving objects segmentation algorithm based on gradient model in compressed domain is proposed.

4, and it fuses intensity gradient model and color histogram model to track human heads, and the method of calculating the similarity between the template and the image to be detected using the two models is also given.

A new method is proposed,which establishes image fuzzy gradient field and sets up the measurement of fuzzy gradient similarity.

Band-pass subband has more significant structural information,which establishes image fuzzy gradient field and constructs the fuzzy approach degree.