Toward the Relationship between Industrial Concentration and Profitability—an Empirical Test from Iron and Steel Industry;

An Analysis of Profitability of Investment in Privately-Run Education;

In this framework,we characterize the bidirectional relationship between the entry behavior and profit margins;compare the entry barriers and the competition intensity in 4 sub-industries.

This paper,base on the viewpoint of evolutionary paradigms in economics and the industrial CAS(Complex Adaptive System)characters,a analytical furame of the industrial supply and demand network was founded,to look back on the previous works of scholars in the relation between industrial concentration and profit margin.

The most sensitive factor affecting the annual profit margin is the drop of product selling prices.

Concentration and Profit Rate of Manufacturing in China;

This paper aims to examine two hypotheses about evolutionary path of industrial profit rate in Chinas industry.

This paper proposes a method to quantify the relationships of objects, factors and profit rate in bid ding construction projects, based on fuzzy set theory and analysis of the representative factors in bidding.

Elman neural network is a dynamic feedback network,an improved model is proposed based on the Elman neural network by introducing time profit factor and applied to the prediction of the composite index of stock.

Considering that the main purpose of investors is to obtain more profit, in order to get more accurate forecasting precision and obtain more accurate results, then obtai.