In Social Network Analysis(SNA), the centrality and Centralization are key performancing indicators for measuring person's (organization's) position and power in a organizations. This paper focuses on connecting the organizational power with organizational relationship, and quntitify the power by three major indictors including degree Centrality, betweenness centrality, and clossness centrality.Followed by the SNA algorithm, the 2010EXPO are further studied for a case to compare different types of power in traditional organizations and the complex ones. And the final conclusion comes out to show that the power belonged within the traditional organization structure and the project organization network are different, and the following style is more close to real practices.
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