This Thesis adopted the Extended Linear Expenditure System(ELES)Model to study the short-run medical service price elasticity of China s rural residents.

Influence of price elasticity of demand to configuration for the reserve capacity of generation side;

A mathematical discussion on the relationship between price elasticity of demand and sales income;

Study on application of price elasticity of demand in reality;

Starting from supply chain integration,taking the maximum profit as a target and following the market regulations,a factor of demand price elasticity was introduced.

A reasonable electricity price discount is used to balance the benefits between buyers and sellers for the existing of power demand price elasticity.

This paper introduces the general theory of demand curve and demand price elasticity, and improves the elastic analysis on the demand price of material information product, expansionary information oroduct and idiosyncratic information product.