Recently,based on the principle of delay discounting in behavioral economics,researchers have explored the characteristics of impulsivity of drug addicts through quantitatively analyzing addicts select preference for values of future reinforcer,and great progress has been ac.

This aspect of decision making is referred to as delay discounting.

The internal mechanism of delay discounting is not clear yet.

A discussion for GPS atmospheric refraction delay observational models;

The argumentation on avoiding adopted atmospheric distributing model in refraction delay model;