جستجوی مقالات مرتبط با کلیدواژه « مکان بهینه » در نشریات گروه « جغرافیا »

One of the most important challenges in disaster management is site selection for temporary housing to be used by the people affected by disasters. Despite numerous studies in literature, the number of parameters considered in several studies on one hand and failure to provide a comprehensive and applicable method including all effective parameters studied in previous studies on the other hand, providing a comprehensive study to select an optimal place for optimal site selection for temporary housing before the disaster happened is necessary for all cities of Iran. Geographic Information System (GIS) and Analytic Hierarchy Process (AHP) are useful tools for this purpose. In this research, in an integrated study, the most important parameters in optimal site selection for temporary housing after earthquakes in urban areas has been considered in 4 indexes including geotechnical, urban planning, distance to dangerous facilities and distance to needed facilities. These four indexes with their parameters have been weighted using AHP. Then in GIS environment, the possible places for temporary housing are ranked and determined in terms of priority. According to the results, the best place for temporary housing has been presented for Mahabad city in West-Azarbayjan province. The results indicated that indices of distance to dangerous facilities and distance to needed facilities are more important than the other indices in the optimal location for temporary housing after earthquakes. In addition, a lack of proper distribution of the open spaces and lack of adequate open spaces such as parks in the mahabad city are challenging.

Indigenous urban development policies , three policies on urban development that can meet the needs of many people, including population and housing overflow Capitation improve municipal services and as long as there is capacity in the use of other urban development policies , the imposition of additional costs environment. Despite Maragheh City internal development capacities, regardless of physical barriers to growth continues to spread like that is a waste of money and creates an unstable environment. Which requires informed guidance and basic organization. Therefore, the present study is a percentage of up to Understanding the Barriers to Physical Development of Maragheh City in coping with the Dispersion of the City the city and the revitalization of the old and old city center to create sustainable urban development, Necessitates the planning of the internal development of Maragheh city. The method of this research is descriptive-analytical with a purposeful purpose. To evaluate the indicators for determining the appropriate areas of urban development, The ANP model is used in a GIS-integrated approach.The results show that : Factors affecting the development of the inner city of Maragheh, the average of 85 Percent, building density, The average occupancy level of 61 percent, gardens and green space destroyed during the 13 years between 1995 to 2015, 1,859,273 square meters, equivalent to 185.92 hectares, Distribution of 25/89 percent compatibility of applications fully compatible, 57.1 of residential buildings with a lot of resistance dating Less, and 56.1 of residential buildings are of poor quality, However, the overall per capita is equal to 27.88 square meters of roads per lane at a high level, but the proportion required between the various functions there. Old and historical city of Maragheh traditional context dominated by residential users and the streets are narrow and winding stairs. The results obtained suggest that the city of Maragheh conditions and capacity for endogenous development, the renovation of old buildings and the creation of high-density, mixed use and residential - have better access to services.

South Khorasan is a less developed region in Iran and due to long distance to the center of the country and being located at the endpoint of energy transmission networks, energy transfer to this province is unstable and expensive. Hence, South Khorasan is a suitable region for the deployment of renewable energy (RE) technologies. Solar energy has a higher priority among other RE-based resources in this province because of the climatic and geographical conditions of this region. In this research, the optimal sites for PV power plants in Birjand County are determined.
First, the set of factors and criteria influencing the site selection of PV power plants was defined. Having prepared and processed spatial data and maps, unsuitable areas were eliminated using Boolean logic model. Remaining areas were rated based on technical, socio-economic, and environmental criteria by means of different fuzzy membership functions. Then, these rated areas were mapped. To identify the optimal sites for the on-grid installations of PVs, fuzzified maps were overlaid by fuzzy gamma operator. Finally, the pixels of the final map were classified into five groups based on their fuzzy values. The results show that 0.5 percent of Birjand County areas are optimal for the establishment of PV power plants.

Population growth in urban areas and limitations of development potentials are the problems that in many parts of the existing population (including Sardasht) takes the future horizons’ residents to the shade and significantly limits the providing of public services and vital resources and suitable residence in the distant horizons. The article deals with this issue and its goal is to determine an appropriate pattern of physical development for cities especially mountain towns. The considered case in this article is to develop physical models for Sardasht using advanced model in the GIS environment in response to research question "Where is the best place for physical development and settlement of Sardasht population in terms and conditions of urban-building?" whose answer has been discussed in this paper