Self and cross price elasticity,which had effects on farmers ability-to-pay,and the changes of elasticity coefficient with income compensation were analyzed.

The price elasticity of medical demand in middle -economic -level areas was analyzed during 1991-1998 in this paper.

Under the demand with price elasticity of final market, the optimal price discount contract consisted of single-manufacturer and single-retailer in the international supply chain is studied in this paper.

Prediction of price and volume elasticity in peak risk areas during rising periods of market indexes;

Based on the tendency theory the paper disassembled the volume which promoted the decline from trading volume,built the price and volume elasticity by concept of economics and reflected the matching of price and volume.

This paper investigates two-level inventory systems consisting of several venders and several retailers,establishes inventory models separately for the vendor and the retailer with price discount or not,while market demand has price flexibility and short supply is permitted.

Under the demand of price flexibility, the paper develops a general profit maximization model for single period two product substitution problem.

These kind of products have a more complicated demand feature and demand price flexibility than material products and media products that only have economic property or political property.

Case study on elastic water price and bearing capacity of water users;