JOURNAL OF URBAN STRUCTURE & FUNCTION
Year:2020 | Volume:7 | Issue:23|Papers Count:8

Today, cities encountered many challenges in the economic, social and environmental problems. For this reason, it is necessary to have the characteristics of vitality for cities, especially metropolitan areas. In such a way that in all development programs, the improvement of the level of the quality of life as a general goal should be considered. Vitality refers to the degree necessary to provide a community based on the needs and capacities of the society. The aim of this study was to identify the factors affecting the vitality of the city of Noorabad Mamasani. The methodology of this research is a combination. The qualitative section involves identifying the factors affecting viability in Noorabad Mamassani through exploring the theoretical and theoretical foundations of research and performing Delphi analysis with the participation of 15 specialist members as panel members. The quantitative section has been determined and analyzed using the New Analytical-Interpretative Structural Modeling (ISM) methodology for the relationship between dimensions and indicators of viability. Finally, using the MICMAC analysis, variables have been identified with respect to the impact and effectiveness of other vitality. The results of this study showed that economic dimensions of variables including sustainable employment, distribution of appropriate transportation infrastructure and adequate housing have the highest penetration power...

One of the most important of relief managers' requests during the post-earthquake period is the availability of reliable data on the status of relief camps. In the present study, the Isolated Crisis Management Social Media Network was used for communicating between 30 relief camps of the city of Gorgan. This platform can reduce the time, and ultimately improve the quality of communication and exchange of needed goods between relief camps. Some issues, including optimal logistics capabilities, fair distribution of goods and services, and video education for the injured people, are topics that can be done on this network. This paper due to target, is practical, due to doing method is descriptive and analytical and due to information gathering method is documental and surveying. In the present study, the minimum spanning tree solving method, has been implemented with Imperialist Competition Algorithm and GIS. Based on the results, and among the all of options that used in the minimum spanning tree, the setting of option 4 with the length of 64932 meters, has the most optimum conditions for media communication between relief camps. Also, the length and the time of transport of goods according to the problem framework in GIS environment was 84332 meters and 147. 48 minutes, respectively. The proposed network and result is not necessarily the best possible solution for communication between defined nodes; But, while fulfilling the required quality, it can be one of the most optimal possible solutions in the framework of the minimum spanning tree problem...

This paper aims to understand and explain the practical judgements of planners in the urban planning environment of Tehran metropolis. By considering the objective of this study which is to develop a middle-range and substantive theory that leads to achieving a better understanding of the institutional behavior of planners in their lived experiences, the constructivist grounded theory has been chosen for this research. In this research, the focus of constructivist grounded theory is on the actions, interactions and social processes of planners. The Data for analyzing of mental elements of planners are provided by semi-structured interviews with 28 planners who have experiences in the planning environment of Tehran metropolis and answering questions related to their lived experience in the given environment. The basic question in early stage of research process is that “ how do the practical judgements of planners in planning environment of Tehran metropolis construct? ” . Based on the theoretical findings in this research, the frictional behavior of planners against the institutional barriers of planning and decision making system demonstrates itself in the tidal behavior framework...

Land use planning has been trying to find some methods for better distribution of urban service. To achieve this, it has used a standardized approach that is based entirely on the same needs and already predicted in the form of urban standards and has been ignored the real demand in land-use planning. This study compares and analyzes two standard approaches and demand-oriented approaches to improve the level of participation of residents in land use planning and realizing the real needs of residents. This research has been used descriptive-analytical method and is done by comparing standardization and demand-oriented approach. The two criteria of per capita land use and the standard of access radius for the principle of standardization and survey of residents have been selected by the questionnaire and analysis in SPSS and objectification of its results in GIS environment by IDW method for the principle of demand-oriented. The results of comparing these two approaches show that there is a serious difference in the type of view and the results of planning based on urban standards and planning based on people's opinions...

Rural migration, with the addition of new districts to the cities, causes the expansion of cities with the increasing expansion of the city. So it is necessary to study the reasons of its formation. The goal of this paper is to explain the spreading pattern of the Sari city and the process of physical development, investigating the pattern of city development and expansion, the impact of city expansion pattern on user distribution, the Impact of City Expansion Pattern on Spatial Distribution of Population and Services in Different areas. In order to study the subject, firstly, by analytical and descriptive methods, various environmental demographic, social and physical variables of the structure of districts of Sari city in different periods were investigated. To evaluate the pattern of development of the physical urban development and development in suburbs and villages adjacent to the city. Then, using Shannon and Heldern, Entropy models, standardized score, Williamson, HDI, Pearson correlation coefficients and Spearman were evaluated and analyzed. To analyze the pattern of urban expansion from variables such as area of the city and city population and gross per capita gross and documented to the master plan of the city, In the form of Entropy and Heldern and also using Williamson models, standardized scores, Combined human development index Pearson and Spearman correlation coefficients have been evaluated and analyzed by the influence of the spread pattern on the distribution...

Old parts of the cities were the best and good urban neighborhoods in the past time. These areas have many monuments elements today. For measuring and identifying of degradation and prioritize of worn-out urban texture is use to decision making methods. The present research problem is abundance and prioritizing of worn-out texture in Gorgan neighborhoods. The extent of this part of Gorgan is about 150 hectares, equivalent to 5 percent. This research is an applied work with descriptive-analytical methodology. This research data are obtained from field survey and documentary and library studies and using of the statistical block of the census in 2011. In this research, the historic and worn-out neighborhoods of Gorgan have been prioritized with using of (WASPAS) decision-making techniques. Shannon entropy method has been used to weigh indices and to evaluate the effect of each index. The results of this research show that Bazaar and Shirkosh neighborhoods with 1. 4090 points are ranked first and with good conditions. Shahzadeh Ghasem neighborhood with 3328. 0 points, Bagpalang neighborhood with 2916/0 points, Sarkhajahe neighborhood with 2746/0 points, Mikhchegaran neighborhood with 2342/0 points are ranked from second to fifth, this areas have good conditions and urban housing indices. Sarpir and Dabaghan neighborhoods with 2322/0 points, Maydan Abbasali with 2214/0 points, Mirkarim and Nohtan neighborhoods with 2054/0 points, Nahlbandan and Passarv with 0/600 points, Darbeno and Doshanbehi with 1716/0 points, Sabzeh Mashhad, Sarcheshmeh and Chaharshanbehi neighborhoods with 1668/0 points, have ranked from sixth to eleventh. These results show that poor and bad conditions of housing indices in these neighborhoods that has been necessary for looking of officials and managers...

In the vulnerability of settlements, only physical factors do not matter, but social elements have an important contribution to the degree of vulnerability. Considering the important role of social factors in reducing and increasing the effects of natural hazards, this study focuses on social vulnerability as one of the dimensions of vulnerability to natural hazards. The purpose of this study was to evaluate and prioritize the social vulnerability of counties of Isfahan province to natural hazards. Therefore, the present study is an analytical descriptive with an applied purpose. So, for estimating and ranking the severity of the vulnerability, the artificial intelligence model and geographical weight regression test have been used. The results show that the three indicators of households with disabled people, disabled people and divorced women had the highest impact on the increasing of social vulnerability in Isfahan province. Also in terms of spatially, the highest vulnerability is related to Falavarjan and Lenjan cities, which have the highest social vulnerability to natural hazards in Isfahan province...

In preparing the land, the subject of space, and analyzing the laws governing its formation, it has the most crucial role in planning. There are generally different interpretations and interpretations of space, but overall it can be said that space encompasses socio-economic interrelations of a part of society in a given environment of the land. And the spatial organization is the explanation of the relationship between man and space and human activities in space. The purpose of this article is to analyze the role of peripheral areas in the sustainable spatial political organization of Tehran metropolis. The main question is what is the role of peripheral areas in sustainable spatial political organization of Iranian cities with emphasis on Tehran metropolis? The research hypothesis to answer the main question is that Spatial Organization of Suburbs of Tehran metropolis in terms of the general picture and how the population is distributed and settled and the distribution of social-economic establishment and the interactions between them due to the instability of the stable spatial political organization, the metropolis of Tehran has been challenged. The method of this paper is descriptive-analysis where will try analyze the research topic using official statistics and available scientific resources. The results of the paper show that Understanding the process of organizing space in the peripheral areas can be seen that in what direction the metropolitan developments do take place and so it is in line with the city's development strategy. It can also be concluded which trends in metropolitan space planning need to be strengthened or weakened or created...