Several major methods for analyzing multiply connected secondary systems are discussed in this paper.

Taking the project of a station excavated by mining method on Beijing subway line 5 as an example, the paper introduces the key construction techniques for the secondary structures such as reinforcement planting, the erection of masonry elements, collar beams and pre-cast columns etc.

Application of Genetic Algorithm in Hierarchical Structure Product Integer Conceptual Innovation Design;

These research subjects involve: 1) mechanism of shear-induced morphological development and exfoliation of layered clay particles during practical molten compounding;2) effect of mesoscopic clay network on the retarded motion and relaxation of polymer macromolecular chains,and on the macroscopic properties of nanocomposites;3) unique hierarchical structure of dispersion and orient.

In this paper,a kind of the design method intelligently optimizing the hierarchical structure product is studied and proposed based on genetic algorithms.

A Valuable Logic Departure Point —On the Multilevel Structure of Literary Text;

The author researches the national and international identification methods of high technology industries, establishes their multilayer structure in China, and analyzes the development of high technology industries in Wuhan.