Service-based Product Differentiation: one Mechanism of Service-enhancement;

On the product differentiation and its effect to the tariff policy under oligopoly;

Research on brand loyalty effect based on the model of product differentiation;

This paper established an analytical frame from imperfect competition,scale economics and H-O trade theory,and derived a gravity equation from homogeneous products and differentiated products.

Adopts Post-Chicago School s definition of monopoly,this paper designs a consumer demand function based on Logit model,computes the market performance of differentiated products firms merger by a numerical simulation approach,finally tests the whole evaluation process by a group of simulated data.

A model of vertical product differentiation with a triangular demand distribution;

In a three-stage dynamic game model based on vertical product differentiation,the article studies that enterprise s debt financing strategy imposes effect on product differentiation strategy and pricing decision under uncertainty,at the same time,we compare competition equilibrium outcomes with that under non-debt financing.

Based on a vertical product differentiation model with linear demand functions, we study the Evolutionary Stable Strategy (ESS) in a duopolistic market in which there are a high quality firm and a low quality firm.