It researches the method for the model s evaluation and use,and then introduced the bayesian belief networks to improve the underlying quantitative model.

A basic model of reaction dynamics consisting of 60 chemical reactions among 19 active compounds,and a simplified model including only 27 reactions were developed for seeking reaction mechanism.

The key of the research in Collar's Pattern Auto-generation Expert System is to establish a collar's 3D basic model and to get the 2D structure and pattern of the collar on the basis of this.

The results show that in cases of inhomogeneous topologies with lane droping or high on-and off-ramp volumes the basic model has significant dev.

The present paper introduced a few basic models,indicated the applied range and limi ts,discussed the further research.

The basic models of optimal system is deduced in this paper which consists of production time, waiting time, total cost, profits, profit rate in system.

An innovated quantitative model of the optimal resource allocation in case of emergency;

Study on stranded crowd number quantitative model of stadium crowd evacuation;

According to mass balance model and the assumption that before 137Cs in plow layer was mixed for a uniform distribution,the surface of cultivated soil would form a surface enrichment layer,a quantitative model was developed to relate the amount of 137Cs enrichment from the cultivated soil profile to soil deposition rate.

Many qualitative models and quantitative models have b.