Wednesday, November 28, 2012

Street Centrality and Densities of Retails and Services in Bologna, Italy

by Porta, S, Latora, V, Wang, F, Strano, E, Cardillo, A, Scellato, S, Iacoviello, V, Messora, R.

This paper examines the relationship between street centrality and densities of commercial and service activities in the city of Bologna, northern Italy. Street centrality is calibrated in a multiple centrality assessment (MCA) model composed of multiple measures such as closeness, betweenness and straightness. Kernel density estimation (KDE) is used to transform data sets of centrality and activities to one scale unit for correlation analysis between them. Results indicate that retail and service activities in Bologna tend to concentrate in areas with better centralities. The distribution of these activities correlates highly with the global betweenness of street network, and also to a slightly lesser extent, the global closeness. This confirms the hypothesis that street centrality plays a crucial role in shaping the formation of urban structure and land uses.
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