In the paper,comprehensive analysis is made on the feasibility of the option of separate highway tunnel and Metro tunnel and the option of combined highway/Metro tunnel in terms of construction conditions.

Combining with modeling analysis,the mathematic models for several common networked control systems are proposed using continuous and discrete system theories.

For the improvement of the data management efficiency of the Qinghe Reservoir, mathematic models are established by use of several years observation data, and the data management and modeling analysis system for Qinghe dam safety monitoring is developed with software VB 6.

The paper briefly introduces some domestic daily-used sorting systems,analyzes their structural characteristics and focuses on modeling analysis for sorted breathing time of cigarette sorting system.

Its main functions include molecular visualization,molecular modeling and job submission.

The initial binding structure was built with molecular modeling based on the experimental results.

Accelerated by the development of Probability Theory and Statistics and the trend of their combined use, application researches based on point sample analysis and modeling using nonparametric density estimation attract more and more attentions of researchers.