中国建筑与房地产企业归核化经营收益能力研究  

Research on Profitability of Refocusing Operation in Chinese Construction and Real Estate Enterprises

作　　者：程勇[1] 徐康宁[1] 

机构地区：[1]东南大学经济管理学院,江苏南京210096

出　　处：《建筑经济》2007年第2期68-71,共4页Construction Economy

摘　　要：本文选取了我国沪深两市1999年之前上市、至2003年未退市的建筑与房地产业中实施归核化经营的27家A股上市公司作为研究样本,以改进的Jacquemin-Berry熵值测量法度量企业的归核化程度,并采用两种非参数检验的方法对样本企业归核化前后的收益能力进行了检验分析和相关性考察。得出的基本结论是,我国建筑与房地产业中的多业务企业,在实施归核化经营后,其收益能力获得了显著的提升,归核化经营之后的企业收益能力显著优于归核化之前的收益能力,并且企业收益能力的提升幅度与其归核化程度之间呈现出显著的正相关关系。This paper employs the Jacquemin-Berry entropy measure of refocusing and two nonparametric statistical tests to examine the longitudinal profitability of refocusing, with a sample of 27 Listed Corporations from the industry group of construction and real estate in China during the years of 1999-2003. The results of our tests indicate that corporations after refocusing show significantly better profitability than the same corporations before. The results also indicate that there is a significant positive correlation between profitability increase and refocusing level.

关 键 词：归核化 收益能力 测度 上市公司 

分 类 号：F407.9[经济管理—产业经济]