Urban Planning
Asghar Abedini; Aram Khezerlou; Behrang Akrami; Amin Khalili; Parviz Azizi
Abstract
Introduction Perhaps housing can also Introduced as the main factor and objective of shaping skeleton and structure of the city, because firstly whatever of cities explicitly at citizenry possession, are homes and housing; secondary, home is a space for birth and growth and maturation ...
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Introduction Perhaps housing can also Introduced as the main factor and objective of shaping skeleton and structure of the city, because firstly whatever of cities explicitly at citizenry possession, are homes and housing; secondary, home is a space for birth and growth and maturation of man at individual or among the family situation; Third, home is a place of activity establishment and growth of family which that is the smallest social unit; Fourth, housing is the main and the most basic factor of identity of man and society and the basis of unification or vice versa Scattering of them (Naghizadeh, 2013). Affordable Housing, is a housing that its features based on the cultural values and their regeneration and promotion in the society and toward the obliteration of self- alienation and return to itself; and cultural activities and the introduction of national identity and searching the special methods in format of qualitative policies and executive policies in it is necessary (Naghizadeh, 2012). Codification of housing basics by using the foundations of Iranian- Islamic architecture of the past decades and Islam monotheism worldview principles and also requirement of pay attention to improving the quality of housing and transformation in methods of construction of buildings is inevitable (Naghizadeh & Asadzadeh Birjandi, 2013). Consideration to muslim housing in Islam is knot with insight to divine verses and this matter sacredness of the human living place. Sacredness that explain the unique features of good home and at muslim human dignity; that pay attention to each of them provide human heavenly and earthly bliss (Hoseini & Samimi, 2015). City housing and residential context are as the main manifestation of appearance of Islamic values (because of filling major section of the city area) can be in the both of old and organic urban fabrics, that based on their period native and cultural conditions, and evolved over time and remained up to now and investigated and evaluated in new fabric of cities, which forms based on urbanism methods and new patterns. This research, look for two main objectives, firstly, analysis and assessment of the housing current status of old and new neighborhoods in Urmia city based on Islamic housing indicators, secondary, analysis and assessment of Iranian- Islamic indicators status of old and new neighborhoods of Urmia city, so that this way able to achieve the strengths and weaknesses of observe of Iranian-Islamic indicators with the matching of results.Data and Method Islamic housing indicators classify in two categories of quantitative and qualitative. Quantitative indicators include: housing area, housing facades, housing quality, housing resistance and safety, housing orientation to the qibla, existence of green spaces in the neighborhood and qualitative indicators include: the use of natural light, comfort in housing, housing relation with nature, non- overlooking into housing, accessibility to housing. In the first stage, quantitative indicators were extracted through the library studies and in the next step housing quality indicators was evaluated through questionnaires. For this work, 330 number of questionnaires through Cochran formula was obtained that among residents of the studied neighborhoods were collected. Also, for weighting the Islamic housing indicators, 30 numbers of expert questionnaires were set, which 15 numbers of questionnaires were polled by experts of seminary courses and 15 numbers of questionnaires were polled by academic experts related to housing. AHP model also has been used for weighting the intended indicators by expert questionnaire. To analysis and assessment of the studied neighborhoods situation with the Islamic housing indicators and also for assessment of Islamic- Iranian housing indicators in the studied neighborhoods, TOPSIS method was used. After initial analysis and assessment of condition by using the output of TOPSIS, was proceed to the pathology and identify weaknesses of indicators, which finally was leaded to present solutions in order to reduce the problems related to having Iranian- Islamic indicators in the studiedneighborhoods.Results and Discussion According to TOPSIS method results, Behdari neighborhood as one of the new neighborhoods of the Urmia city, with consideration of Iranian- Islamic indicators toward the Mahdi- al- qadam neighborhood, which that is one of the old neighborhoods of the Urmia city, is more favorable. With the return to the indicators, respectively determine that, resistance and safety, housing area, comfort in housing and overlooking have the greatest impact in undesirable position of Mahdi- al- qadam. In other words, having weakness of mentioned indicators in the Mahdi- al- qadam neighborhood has caused that this neighborhood toward the Behdari neighborhood placed in a lower position. Therefore, in planning for the Mahdi- al- qadam neighborhood its necessary that solutions be explained to improvement of indicator status. Also, according to the results presented in table number 3 that shows the ranking of indicators in neighborhoods, resistance and safety indicator has been ranked first. Comparison between situation of the Mahdi- al- qadam neighborhood and resistance and safety indicator shows having major weakness of mentioned indicator in Mahdi- al- qadam neighborhood.ConclusionConducted analyzes in this research showed that among the chosen indicators, overlooking indicator as the factor that covering visibility and Create privacy lies in itself, also it is important from the point of view of the Seminaries and academic experts, but unfortunately this indicator is among the weakest indicators in Mahdi- al- qadam and Behdari neighborhoods and needs more attention. In both neighborhoods, interesting point is located the resistance and safety indicator in the highest position among the other indicators, that shows favorable situation of this indicator among the other indicators. Also, the results of comparing two neighborhoods represents this point that Behdari neighborhood, with consideration of all Iranian- Islamic indicators, is in a more favorable situation toward the Mahdi- al- qadam neighborhood.
Urban Planning
Hassan Mahmoudzadeh; azar puyanjam; fatemeh amanzadeh
Abstract
Introduction One of the emerging environmental hazards caused by the expansion of urbanization is the "thermal island" phenomenon, in which urban areas have a distinct climate compared to rural areas, and the city center has higher temperatures than its surrounding areas. This phenomenon occurs when ...
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Introduction One of the emerging environmental hazards caused by the expansion of urbanization is the "thermal island" phenomenon, in which urban areas have a distinct climate compared to rural areas, and the city center has higher temperatures than its surrounding areas. This phenomenon occurs when a large percentage of natural surface coverings are destroyed and replaced by buildings, roads and other installations. The thermal island phenomenon has been studied and recorded in various cities around the world for more than 150 years. And it generally appears as the surface of the earth shifts from natural to non-perishable. Surface temperature is considered one of the most important parameters in identifying a city's climate that directly controls the effect of the city's heat island. And more recently, many regional studies, such as global climate change, hydrological and agricultural processes, urban land use and land cover, and soil moisture assessment, have been identified as important factors. Traditionally, urban heat islands have traditionally been studied using meteorological station data, or vehicle surveys, but today to reduce the weakness of these methods and to study them more closely, Satellite and remote sensing data are used more frequently because of more spatial resolution than terrestrial weather data. Remote sensing images, because of their wide coverage, timeliness and ability to obtain information in the thermal range of the electromagnetic spectrum, are a useful source of heat mapping and estimation of Earth's radiant energy. Methodology Split-Window algorithm is one of the most important methods for estimating surface temperature which is better than other methods for calculating surface temperature. An important feature of this algorithm is the elimination of atmospheric effects. Since this algorithm does not require accurate information on atmospheric profiles during satellite acquisition, it is widely used in several sensors to retrieve Earth's surface propagation capability. The sensors used in this algorithm include the Multi Spectral Sensor and the TIRS Thermal Sensor. The following are the cases: Due to the lack of a database to measure the Earth's surface propagation capability with Landsat 8 satellite images, the C coefficients through various numerical simulations It was obtained from atmospheric and surface conditions.In this study, Landsat 8 images with 7/15/2015 Landsat 8 (OLI and TIRS) images and land use maps were used to analyze the thermal islands. After processing the images, a separate window algorithm was used to calculate the surface temperature and the maximum likelihood method was used to classify the images. Discrete Window Algorithm is a mathematical tool that uses ground information, thermal sensor brightness temperature (TIRS), ground emission capability (LSE) and fractional green vegetation factor (FVC) obtained from OLI and temperature multispectral band. Estimates the surface of the earth. Image analysis was performed in ENVI 5.3 and ArcGIS 10.5 software environments. Result and Discussion Surface temperature is one of the main factors in the study of cities. Because only two or three degrees differs from the air temperature of the lower layers of the urban atmosphere, which is the center of the surface energy balance, which determines the climate between buildings and affects the comfort of urban dwellers. In the present study, preliminary processes such as radiometric, atmospheric and geometric corrections were carried out and then high atmospheric radii were converted to surface radiation and then calculated by vegetation index, vegetation fraction index, radiation power and water vapor column, temperature. Ground level in the study area was obtained using a separate window algorithm. Conclusion The results of thermal extraction showed that maximum temperature was related to low density vegetation, residential, industrial, industrial, asphalt-concrete and brick-iron frameworks. Minimum temperatures are also visible in green, brick-wood and clay-wood. The results of this research for planners and experts at the regional level to obtain information on the status of land surface temperature and their relationship with land use can pave the way for management decisions to conserve natural and agricultural resources. It is suggested that due to the moderating role of vegetation, vacant land and the wilderness be changed to uses such as parks and landscapes, and in addressing other uses, the reasons for residential and industrial and workshop areas should be taken into account, and the surface temperatures of buildings most The city has its own surface area and has the highest amount of radiation reflection can be reduced by planting vegetation on the roofs of buildings known as green roofs. High resolution satellite images are also recommended for land use mapping.
Urban Planning
Ahmad Pourahmad; Heydar Salehi Mishani; Leyla Vothoogi; Ahmad Roomiani
Volume 19, Issue 54 , February 2016, , Pages 83-103
Abstract
Increase in urban population changes agricultural lands to residential, commercial and industrial uses. These changes have unfavorable consequences including loss of vegetation cover on the urban environment. Ambient temperature and high-quality agricultural lands have been destroyed. In In this regard ...
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Increase in urban population changes agricultural lands to residential, commercial and industrial uses. These changes have unfavorable consequences including loss of vegetation cover on the urban environment. Ambient temperature and high-quality agricultural lands have been destroyed. In In this regard one of the strategies that optimizes the physical fabric of urban and reduces environmental damage is the use of modern techniques of remote sensing which plays an effective role in the management and the improvement of urban land use. This paper aimed to evaluate and optimize physical growth of Urmia to maintain vegetation and agricultural lands developed. Therefore, changes in land use Urmia, between 1985 and 2011 were calculated. Reviews indicate a sharp decline in agricultural lands and orchards in the area. So as using AHP descriptive model we found that in order to satisfy the requirements of urban development five categories should be considered: From very suitable to very poor groups. The results showed that over 21.5ha of the area, (i.e. 5.08%) have suitable conditions for the intended purpose.
