Through analyzing the two common evaluation indexes of intersection traffic condition,consist of intersection traffic capacity and intersection saturation degree,and on the basis of determining service level of each directional traffic line,the feasibility of grade crossing be separated can be determined comprehensively according to the position of grade crossing in the urban density area.

This paper analyzes on the theoretical foundation of the tighten city morphology and the problems existing in it, and points out that only controlling the urban density in a rational scope could implement the sustainable development of the city.

On the idea of urban greening in compact city in China;

From the aspect of city institution, thisstudy re-expounds the action of government and con-sumers in pursuit of interest maximization in the con-text of market economy.

City institution competition is an aspect of City competition, as well as a remarkable symbol.

The Decision Mechanism and Inner Logic of Transition Tactics;

Based on information asymmetry theory and going down the thread of Emergence Cause→Determinant Mechanism→Economic Consequence, this innovative research is started from corporate information transparency definition, and then build up systematic analysis framework for Chinese listed company information transparency.