Define the double relation measure,this measure is additive if and only if non-zero value of basic probability assignment function only get from single element set or double elements set.

Because some combat effectiveness indexes which are related to human behavior are difficult to be quantified with belief function to explore indefinite problems.

The main idea was to obtain belief function using the wavelet coefficient of infrared images and low light level images,then construct fuzzy density using the fuzzy edge evaluation function of local area,finally get fused wavelet coefficient by fuzzy integral and reconstruct fused image by inverse wavelet transform.

According to the measurement results of the temperature and the voltage of circuit component,the belief function assignment of two sensors to circuit component,and the fusion belief function assignment was obtained by using DS rule and fuzzy method respectively,th.

By using the theory of function S-rough sets and random characteristics of function transference,the concept of reliability of function transference and reliability function are presented.

Based on S-rough sets theory and element transference random,the concepts of the reliability of element transference and reliability function are presented.

In this paper,the concept of reliability of property transference and reliability function was presented,and the generation of depending on the reliability of two direction variation S-rough sets was given.

The methods for determining the best point position of association degree function in matter element analysis method used in environmental quality assessment are discussed, pointing out that the determination of the best point position by classic comprehensive judgement is not completely rational.