The concept about land use is changed from destructive use to intensive use by the research on reasonable supply scale of land for urban construction.

Rational Scale & Layout Methods for Urban Rail Transit Network;

Based on the comparison and analysis on theoretical assumptions of the rational scale of community population from domestic and overseas, this paper discusses the topic from different perspectives, such as administrative system, alloca- tion of engineering technology, operational benefit of public facilities, residents’ social mental endurance capacity.

In this paper, the rational scale of human resources for the railway transportation industry in China is analyzed quantitatively.

Reasonable Scale Study of Changchun Qimao City Central Multi-storey Parking Garage;

Furthermore the article brings forward the thinking of the reasonable scale of markets on rural base leve.

The paper first researches into the SCM models based on linear,netty and compostive information chain,then concludes that the SCM model based on compositive information chain is better,and finally analyzes the operation of this model in detail.

From the viewpoint of game theory,the paper discusses the meaning of collaborative competition and supply chain management model of enterprises,which is guided by the idea of collaborative competition.