In this part,we re-measure the systematic level of trade in virtue of the relative size of trade and the balance factor to bring the research down to one-dimensional real space,and then calculate the number of countries or areas which are included in the key-subnet of the global economic system.

This paper presents a communication platform of military hierarchy adaptive network communication platform--tactical multinetwork gateway,and the way of realizing in embedded realtime operating system VxWork,gives more description in analyzing the key techniques--the control technology of tactics network.

Based on increasing of gateway network element(NE),we introduced a method in which the ECC net is divided into some subnetwork with different compartmental plane,hiberarchy and type.