Based on the grey relational analysis of the import and export volume change of coastal ports in Guangdong province and the industry development,a prosperity index system of coastal port economy of Guangdong province is established.

On the prosperity index selection in real estate market in Xi an;

Law of index gases adsorption and condensability of coal spontaneous combustion;

Research on correspondence relationship between coal spontaneous combustion index gas and feature temperature;

In order to exactly predict the spontaneous combustion,we established the index gases of 4 different coal samples by B-Mode Relational Degree Analysis and figured out the relational degrees between the gases,concentration ratio,and the temperature at high temperature section(100～200℃).