akram karimkhani; mohammadhossein saraei
Abstract
The increasing growth and expansion of cities under the influence of population growth and migration, has led to unplanned construction and many changes in the spatial structure, especially the physical development of cities in unfavorable places that require basic guidance and organization. In the present ...
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The increasing growth and expansion of cities under the influence of population growth and migration, has led to unplanned construction and many changes in the spatial structure, especially the physical development of cities in unfavorable places that require basic guidance and organization. In the present descriptive-analytical research, using Fuzzy ANP method, the development and growth of Yazd city has been evaluated. Using weighted overlap method in GIS the analysis of the development pattern and guiding urban growth has been done. To analyze the effective factors in the development model of urban area, first 7 main criteria (including environmental, economic, demographic, land and housing market, spatial-physical, government plans and policies, and access to public services) with 32 sub-criteria were determined for Yazd urban area by examining the internal and external sources. Then questionnaires were completed by 20 officials of relevant organizations. Using the Fuzzy ANP model, the coefficient of importance of each indicator was obtained and the most important factor in the development pattern of urban areas was determined. The results show that spatial-physical criteria with 0.170, and population with 0.158 have the highest and economic criteria with 0.052 and government plans and policies with 0.035 have the least impact on the growth and development of Yazd. Because region one in the north of Yazd city has less worn-out texture and region 3 in the south lacks fertile agricultural lands, these regions can be suggested for the future expansion of the city.
Ali Eshgi; Hossein Nazmfar; Ata Gafari
Volume 4, Issue 4 , March 2018, , Pages 11-26
Abstract
The vast environmental damages of earthquakes have recently attracted more attentions to the concept of resilience to minimize the pernicious effects of such disaster. The present study evaluates the physical resilience in municipality region one of Tehran against the possible earthquakes. Using a descriptive-analytic ...
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The vast environmental damages of earthquakes have recently attracted more attentions to the concept of resilience to minimize the pernicious effects of such disaster. The present study evaluates the physical resilience in municipality region one of Tehran against the possible earthquakes. Using a descriptive-analytic method and GIS modeling, data were analyzed based on results obtained by network analysis process. The general resilience map of the region was drawn. Then a fuzzy technique was applied to the map to create different scenarios of earthquake magnitudes. The results indicated that in a probable earthquake of 6 Richter’s magnitude scale, 11.13 percent of constructions would locate at the low and very low resilience range. In such a scenario except two, other neighborhoods of the region would not be facing a serious vulnerability. With a probable 7 Richter’s scenario, the previous percentage would increase to 39. In a probable 8 Richter’s scenario, 52.29 percent of constructions would be faced with serious danger by which almost all rural textures fall in the very low range of resilience scale. Finally, in a probable 9 Richter’s scenario, 67.45 percent of constructions would fall at low and very low range of resilience scale. Most of them locate at areas of 1, 3, 4, 5 and 8 of the region.
