Alireza soleimani; Sedigheh Karimi; Samira Shotorbani
Abstract
Urbanization is one of the basic challenges that the world society is facing in the 21st century. Nowadays, the irregular growth pattern of cities and irregular urban development have destructive effects on cities and their surrounding environment. In the meantime, the city of Bonab is not an exception ...
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Urbanization is one of the basic challenges that the world society is facing in the 21st century. Nowadays, the irregular growth pattern of cities and irregular urban development have destructive effects on cities and their surrounding environment. In the meantime, the city of Bonab is not an exception to this rule. In this descriptive-analytical research with applied purpose, using the fuzzy method and remote sensing, the physical expansion and growth of Bonab city has been evaluated. In order to analyze the effective factors in the pattern of development and physical growth of the studied area, first, 10 related and main criteria including: slope, direction of slope, height, type of vegetation, distance from faults, distance from waterways, distance from communication network, distance from rivers, distance from rural settlements and distance from susceptible lands were referenced using the geographic information system were placed in the numerical range of zero to one. Then, the specified layers were fuzzy and membered by different functions, and lastly, the final map was prepared using fuzzy criteria and fuzzy gamma. In relation to the modified fuzzy gamma model, values of 0.7, 0.8 and 0.9 have been used to identify potential areas for the physical expansion of Bonab city. The analysis and evaluation of the accuracy of the model was done based on gamma layers and a number of raster layers, as a result the gamma 0.9 was introduced as the final layer of land suitability for the future expansion. Based on the final map obtained, it can be said that the favorable areas for the future expansion of Bonab city are mostly located in the north and northwest areas.
Asyeh Namazi; Sayed Ahmad Hosseini; Vahid Gholami
Volume 5, Issue 2 , September 2018, , Pages 80-92
Abstract
A review of current global developments suggests that the city and urbanization have fundamentally experienced some qualitative and quantitative changes. One of the most important consequences of such changes during the recent decades is the disturbance of service system’s distribution and their ...
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A review of current global developments suggests that the city and urbanization have fundamentally experienced some qualitative and quantitative changes. One of the most important consequences of such changes during the recent decades is the disturbance of service system’s distribution and their concentration in a particular location. The proper management of the growing need for sport will never be possible without having enough information, tools, and modern methods in different levels of neighborhood, district, region and city. Easy and quick access to sport services, cost saving and optimal allocation of resources require scientific methods and related criteria to support the management of cities. Accordingly, the present study evaluates the spatial pattern and presents an optimal model for locating sports centers in Tehran. The research method is a combination of descriptive and analytical methods and its type is applicable. To analyze the data ArcGIS and Super Decisions software are applied. Also, Average Nearest Neighbors index, ANP model and fuzzy logic are used for analyzing the data related to locating sport spaces. The results of this study showed that according to the cluster pattern of the distribution of sports spaces in Tehran and also the lower per capita sport spaces of this city than the minimum number of inhabitants, access to these centers is not suitable in the current situation. The results of the fuzzy model showed that the situation in the central regions of Tehran is more inferior in this regard.
