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英文文献：Geographic Distribution of Renewable Energy Sector Industries: An Analysis Using Recent Developments in Industry Concentration Measurement-可再生能源部门工业的地理分布:利用工业集中测量的最新发展进行的分析
英文文献作者：Register, D. Lane,Lambert, Dayton M.,English, Burton C.,Jensen, Kimberly L.,Menard, R. Jamey,Wilcox, Michael D.
英文文献摘要：
Recent developments in firm location analysis are applied to explore the concentration patterns of firms making up the green energy sectors in 2002 and 2006. A two-step procedure is applied in this analysis. First, Guimar?es, Figueiredo, and Woodward’s spatial adaption of Ellison and Glaeser’s industry concentration index are applied to estimate the degree to which firms making up the so-called green energy sectors tend to exhibit concentration. In the second stage, the spatial distribution of concentration is analyzed using a statistical framework, also suggested by Guimar?es, Figueiredo, and Woodward. Preliminary results suggest that green energy subsectors exhibit significant global concentration, but localized concentration appears to be random.
本文应用企业区位分析的最新发展，探讨了2002年和2006年绿色能源行业企业的集中模式。本分析采用两步分析方法。首先，Guimaraes、Figueiredo和Woodward的埃里森和格莱泽的产业集中度指数的空间适应性被用来估计组成所谓绿色能源部门的公司倾向于展示集中度的程度。在第二阶段，使用统计框架分析浓度的空间分布，也建议Guimaraes, Figueiredo和Woodward。初步结果显示，绿色能源各部门呈现出显著的全球集中度，但局部集中度似乎是随机的。
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