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Exploring Network Analysis for Urban Planning and Disaster Risk Reduction in Informal Settlements: Cases From Honduras, Jamaica, and Peru
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Author(s): Vicente Sandoval (Florida International University, USA), Juan Pablo Sarmiento (Florida International University, USA), Erick Alberto Mazariegos (Oficiocolectivo, Costa Rica)and Daniel Oviedo (University College London, UK)
Copyright: 2020
Volume: 3
Issue: 1
Pages: 16
Source title:
International Journal of Disaster Response and Emergency Management (IJDREM)
Editor(s)-in-Chief: Dean Kyne (The University of Texas Rio Grande Valley, USA)and William Donner (The University of Texas Rio Grande Valley, USA)
DOI: 10.4018/IJDREM.2020010103
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Abstract
The work explores the use of street network analysis on informal settlements and discusses the potential and limitations of this methodology to advance disaster risk reduction and urban resilience. The urban network analysis tool is used to conduct graph analysis measures on street networks in three informal settlements in the LAC region: Portmore, Jamaica; Tegucigalpa, Honduras; and Lima, Peru. Authors incorporate risk variables identified by these communities and combine them with prospective scenarios in which street networks are strategically intervened to improve performance. Authors also compute one graph index named Reach centrality. Results are presented spatially through thematic maps, and statistically by plotting cumulative distributions. Findings show that centrality measures of settlements' networks helped identify key nodes or roads that may be critical for people's daily life after disasters, and strategic to improve accessibility. The proposed methodology shows potential to inform decisions on urban planning and disaster risk reduction.
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