جستجوی مقالات مرتبط با کلیدواژه « Physical expansion » در نشریات گروه « هنر و معماری »

Today, rapid urban growth has affected all cities in small, medium, and large scales, which includes the urban environment and has a direct relationship with the quality of urban life and its sustainability. Therefore, in this research, the process of heterogeneous physical expansion of the small city of Jajarm and the most important effects of this growth on the environmental components have been analyzed. This study was the descriptive-analytical method. The data collection method was based on a survey and documentary. Therefore, the researcher-made questionnaire was used to collect data. The sampling method was probabilistic and snowball, which 30 people have been questioned in the snowball sampling. Findings illustrated that the growth of Jajarm city in the years between 1335 to 1395 has been uneven and heterogeneous that This issue has affected different parts of the city, especially the environment. In order to estimate the impact of heterogeneous growth of Jajarm city on environment many components have been evaluated including waste, wastewater management, green space, health care, water resources, natural hazards, and air quality, which the first three components are the most affected and the latter three components are the least affected by this change. The result is that the city of Jajarm, in a short period, which this increase was not planned but has grown spontaneously in a spiral pattern. So, except in some of the indicators in all the studied indicators, the test value averages obtained were higher than the assumed average and has been indicating the heterogeneous growth of the city and its negative impact on the quality of environmental indicators.

Housing is the smallest element of housing, the most important urban land use and one of the major indicators of a country's development assessment. On the other hand, demographic changes due to natural growth and migration increase the need for housing and lead to the physical expansion of cities; in principle, the lack of proper land policy in a country or a policy incompatible with economic, cultural and political conditions. It will lead to numerous problems in the field of economics. This has prompted national and local governments to develop policies to control the physical disruption of cities. The purpose of the present study is to determine the impact of these policies on the physical development of District 15 of Tehran Municipality. In this study, which is cognitive in terms of purpose and in terms of post-event nature, a qualitative approach was used by descriptive-analytical method. The field study was conducted through a survey method based on interview and questionnaire techniques. The statistical population is comprised of urban elites, professors and experts. Data analysis was done by SPSS software (Friedman test) and GIS software was used for data analysis. The results showed that demand-driven policies were more effective than supply-based policies among the effective policies on the development of Tehran's 15th district. Of all the indicators, direct government involvement in the land market (transfers in the urban land sector) has played the most role.

With the rapid growth of urbanization in Iran, in addition to increasing the number of cities and their population size, the size of cities also grew and expanded rapidly, so much so that the rapid physical expansion of cities even surpassed the rate of population growth. This unplanned growth led to the horizontal expansion and created a phenomenon known as sprawl. Accordingly, the purpose of this study is to investigate the stages and pattern of physical development of Kiyakola city during the past decades and to analyze the factors affecting them. The city has experienced significant physical growth in recent years as a political center of newly established township of Simorgh. The methodology of the research is based on descriptive and analytical approaches that will determine the direction and form of physical development using physical expansion models such as spatial population density analysis, Moran's spatial autocorrelation methods, and hot spots in GIS. The results of applying the models for city show that the physical expansion of the city was dispersed and non-condensed during 1976-2006 which prepared the ground for rapid growth without planning. The results of spatial analysis show that the density in all three indices of population, housing and construction has a cluster distribution pattern and spatial autocorrelation. Most of the hot spots are in the western and central parts of the city, and the coldest spots are in the eastern and southeastern parts of the city.

The population growth has accelerated the physical expansion of cities and increased the risk of geomorphology in urban areas. Considering the importance of hazards and its association with casualty and financial damages,this study evaluates the hazards facing the urban area of Qorveh and Qaleh discontinuous urban area.Since the purpose of this study is to identify the geomorphological hazards of Qorveh city,firstly using different information layers and library information and field observations,the general status of the area has been evaluated and three types of risk of slope movements, flood and subsidence have been identified for the region. Then, using fuzzy logic, radar images, and SBAS method, as well as field observations, the susceptible areas of slope movement, subsidence, and flood were identified, respectively. The results indicate that the study area, especially the southern margin of Qorveh and the margins of the Qaleh River, with a maximum of 47 mm subsidence, has a high potential for subsidence. Also, due to the status of the Qaleh River, the marginal areas of this river that have been the focus of many settlements in recent years have great potential for flooding, as well as parts of the western area of Qorveh which advance towards the slopes of Mount Kolava, are subject to slope movements.

In this study, using Landsat satellite images, physical and density made changes in the city of Sari were evaluated simultaneously in four periods of 10 years from 1988 to 2018. Maximum Likelihood Classification and Normalized spectral mixture analysis (NSMA) algorithms were used to extract physical and density made information from satellite imagery, respectively. The results showed that the area of the city of Sari increased from 1726 hectares in 1988 to 3071 hectares in 2018, with the largest expansion in the east, south and southwest. density made has also risen from 49% in 1988 to 56% in 2018, with the highest increase in the northeast (12%), south (12%), and west (10%) respectively. In addition, physical expansion and density made were simulated in 2028. The results of the prediction model show increase the 1716-hectare urban area of Sari focusing on the southwest and east directions in 2028. Furthermore, it is expected the increase in the average density made of from 56 percent to 63 percent the most in the north, east and southwest directions along the main roads of the city.