A two-level supply chain model with one manufacturer upstream and two retailers engaged in Bertrand competition downstream was developed to study the factors influencing supply chain members optimal expected profits and the sensitivity to cost information sharing.

Under the condition of an upper stream manufacturer and two distributors who sell different products, hold private demand information and carry out price-based Bertrand competition, the paper establishes a three-stage game theory model, gets equilibrium result and puts forward such a tactics as sharing demand information between manufacturer and distributors.

The competition between small and middle enterprises is regarded as Cournot-Bertrand competition model.

The Stability of Ecological model Balance Solution with Competitiveness of Age Construction and Distributing Time Lag;

Analysis on the Introduction of the Competitiveness Strategy of Patent Right of Foreign Banks;

On Enhancing the International Competitiveness Through the Industry Clusters;

Break in competition, grow in challenge;

The competition based on the merits of cnstomers——research on the blue sea;

Responses of Microcystis aeruginosa to reducing oxidation reduction potential under competition growth condition;

A comparison study on international competitive advantages of textiles produced by China and Turkey;

The dairy industry's enterprise state and strategic analysis on the competitive profile;

The optimal control problems of advertising expenditures in the competitive condition;