Based on the thermal equilibrium theory and temperature distributing formula of semi-infinite region and numerical simulation method,the authors study the change regularity of the buried pipeline temperature field influenced by the unsteady environment temperature.

If the bba is constrained by the two key factors of stable environment and confidence measure,the confidence bba is formed.

Under the objective environment, for reasons of the possible instantaneous exception of the BBA (basic belief assignment) constructed from one-off sampling observation data, the objective confidence BBA was proposed, which was associated with the two elements, stable environment and confidence measure.

Study of speech enhancement algorithm based on MMSE-LSA under non-stationary environments;

The basic characteristic of complex sysetem and the internal environment complexity are researched , and function of positive feedback are discussed from the dynamic point of view on homeostasis.

By making a evaluation index system and using AHP to determine the evaluation factor's weights,this paper builds the valuation model of eco-environmental stability of Tibet and uses the overlay function of raster-GIS to make a result map,and finds the distribution characteristics of eco-environmental stability of Tibet based on the analysis of result map.