In this paper selected the Herfindahl index as indicators to measure the degree of diversification, performance indicators divided into profitability indicators, development capacity, the risk of performance indicators and market performance indicators, select the size of the company and operating l

Use this index as a measure, Sheikh pluralism indicators of the extent of performance indicators, will be divided into profitability indicators, and the development of capacity indicators, risk performance indicators and performance indicators, market selection and size of the company for years in b

This article selects a hertz profuse index to take the weight multiplication degree the target, divides the achievements target into the profit ability target, the development ability target, the risk achievements target and the market achievements target, the selection company scale and the managem

This selection of Geffen index as a measure of diversity indices, indicators into profitability, capacity development indicators, risk indicators and performance indicators, select size of company and business span of exogenous variables, create a linear regression model.

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