, its comparative advantage--the basis of its development--must be turned into competitive advantage, so that the economy of the west will develop in the manner of hop and leap, the purpose of which is to realize the style of "point axis development" and finally the strategy of disproportionate gradient advancement.

On Gradient Propulsion of the Rural Social Security System;

Considering the different contexts of districts, the Chinese scholars and practitioners in the fields of economics have advocated various district economic development modes such as gradient propulsion, axial progression, coordination between districts, radiation from urban zone and interwoven net style.

This paper begins with the analysis of traffic demand and road network supply,advances the concept and a measuring method of the nonequilibrium degree of urban road network s supply and demand,the results of the measuring can be used as a basis of the coordi.