This paper describes the new method that is introduced into prediction of subsidence using system engineering method with acoustic logging and density logging.
In this paper, two kinds of models are presented and optimized for project investment risk income on the basis of probability X distribution. One kind of model
Based on the statistical data from 1975 to 1997, we forecast the growth rate of coal consuming and the quantity in coming decade with the BP neuron network in t
After joining in WTO,Chinese enterprises face more intense competitive environments.The prblems,such as many foreign capital enterprises swarming into China.Inc