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Hamideh Afsharmanesh, Zahra Hejazizadeh, Bohloul Alijani,
Volume 21, Issue 61 (6-2021)
Abstract

Climate predictions have been made in global, regional and local simulation, and climatic parameters have changed in terms of trends and models in climatology, futures studies are less visible in literature and climatology literature therefore environmental planning and futures analysis are an attempt to look at the long-term future in the field of climatology. Today, one of the most important challenges of the present and future is the increase in temperature and   is the lack of climatic comfort. The growth of Tehran's metropolitan area, improving living standards, expanding urbanization and industry, climate change, and the energy shortage crisis are important. The survey forms were prepared by the climatologists and managers of Tehran and data analysis, futuristic techniques such as scenario for data analysis tool in this study was MICMAC software. have been used. In the research process, the most important key factors and drivers in relation to futures studies were identified in relation to the increase of temperature in the city of Tehran.
Mini scenarios and a comprehensive scenario were defined in three cases:
  1. Improvement of the Micro-Climatic Conditions of Tehran City + Climatic Comfort of Citizens
  2. Lack of  good micro-climate in Tehran + low climatic comfort of citizens
  3. The lack of improvement in the micro-climatic situation in Tehran + the lack of climate comfort for citizens and increased energy consumption
According to the results of the study, the most important factors in creating a crisis of rising surface temperature can be the lack of attitude to the concept of micro-climate improvement and urban management.
 
Mr Arash Ghorbani Sepehr, Dr Afshin Mottaghi, Msr Zahra Ansari, Mr Morad Delalat,
Volume 21, Issue 61 (6-2021)
Abstract

The city of Tehran, based on the 1404 document and the comprehensive plan approved in 2007, is a global, sustainable and coherent city with a structure suitable for leisure and leisure as well as a well-informed urban community with appropriate infrastructure. In order to achieve such a definition, the mentioned documents include promotion of the role and position of Tehran in transnational, national and regional levels, economic development and prosperity of the city of Tehran, improvement of communication networks, environmental protection, active restitution and conservation of natural heritage , Historical and cultural city of Tehran, and the development of green spaces, public spaces, recreation and tourism are predicted. One of the most important areas that can be used to operate the above strategies is the urban tourism area in the Tehran metropolis. Therefore, the issue of competition in urban tourism is an important factor in the progress of all cities of the country in competing with each other and, as a result of the prosperity and prosperity of the country at the national level, and then in competition with neighboring countries and globally, will make rapid progress and attract much capital to the country. The main objective of the research is to study the political geography of competition in urban tourism. Seeking to reach the goal of this article, the statistical population of the study is the provinces of Iran, which Tehran province has selected as a case study. In line with the aim of the study, data related to tourist attractions were collected using the Statistical Yearbook of the provinces (Tourism Organization, Cultural Heritage, Governor's Office in 1395) and then TOPSIS and ARC map software were used to map the provinces.

Dr Mohammad Hosein Saraei, Dr Mohammad Reza Rezaei, Mr Mohsen Adeli,
Volume 21, Issue 61 (6-2021)
Abstract

The route optimization process is one of the analyzes that can be used when there is a constraint on resources and time, including post-earthquake conditions. In this research, this analysis has been used to solve the Travelling Salesman Problem. In this case, the goal is finding the shortest path between a set of points and the algorithm will try to minimize the transmission costs and target function. This paper due to target, is practical and developmental, due to doing method is descriptive and analytical and due to information gathering method is documental and surveying. In order to implement this problem, by considering to the strict scenario of accessing resources, two algorithms including the Ant Colony Optimization and Imperialist Competition Algorithm in the MATLAB environment with the Dijkstra algorithm in the GIS environment have been used. The view points of the model are areas that prepared to temporary post-earthquake settlement in Gorgan city and the spatial and temporal real-time distances in the urban network are used instead of Euclidian distances. The results of the implementation of the model have shown that the Ant Colony Optimization has performed the route optimization in two parameters of time and distance more effectively than the two dijkstra and Imperialist Competition Algorithm.
 
Mr Abdolali Puor Keikhaei, Dr Mahmoud Reza Anvari, Dr Gholam Reza Miri,
Volume 21, Issue 61 (6-2021)
Abstract

The physical development of a city will cause growth in other areas. Undoubtedly, the physical development of a country is an important factor in creating the dynamism of the economic system and even the well-being of its people. In this regard, Local governments need the variable, stable and sustainable financial resources for their role in this area. One of these sources is "taxes". The impact of tax on urban physical development plays an important role in its economic and social growth. In the meantime, taxes, especially the tax of estates and tenements, are one of the most reliable ways to provide resources for physical development. Therefore, the purpose of this study is to Investigating the Process of Urban Physical Development with Emphasis on Real Estate Taxes (Case Study: Five regions of Zahedan).The current approach to the present research is qualitative and quantitative and the type of research is applied. In this regard, comprehensive studies were conducted on the research indicators in the study area. The Fuzzy Mamdani model is then used to analyze the information. The results of the model function of the ranking of indicators indicate that public health and environment indices are in a desirable condition, Housing indices and quality of access are at a moderate level and educational, commercial, entertainment and recreational indicators are at an unfavorable level. The results of the status of the studied indices in determining the physical development of each of the 5 study areas in Zahedan in the output of the fuzzy inference system in the MATLAB software show that the 5th region with a score of 0.82 and first area with a score of 0.79 have a desirable level. The 4th area with a score of 0.70 has an average level of physical development. As well as the 2nd area with a score of 0.61 and third area with a score of 0.50 have an undesirable physical development.
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Dr Ali Asgharzadeh, Dr Seyed Gholamreza Islami, Dr Iraj Etessam,
Volume 21, Issue 61 (6-2021)
Abstract

Earthquake and its related phenomenon are often considered as the causes of instability and disorder in engineering and architecture, and have resulted in the destruction of many buildings and urban fabric. Despite this, by changing our attitude to earthquake: by redefining it from problem to potential and from chaos to complex organization, a different layer of this phenomenon can become evident. Earthquake and fault lines can be considered as an organizing factor, which play an important but hidden role in the geography of habitation, e.g. settlement location, urban spatial network, urban development and spatial-structural network of buildings. This article adopts a holistic approach and quantitative-qualitative methodology to identify the role of self-awareness and mental imaging in the complex system of earthquake-qanat-city and its effects on urbanism and architecture in different scales, which has resulted in an earthquake compatible architecture in different periods in the history of Iran and in some contemporary examples too.

Mr Mohsen Kameli, Hamidreza Azemati,
Volume 21, Issue 61 (6-2021)
Abstract

Human behaviors and activities of individuals are created in urban spaces, and cultural and social relationships are formed in these spaces. Considering the main source of insecurity among citizens in the cities and the important factors such as the physical form of the city, urban structures and the shape of buildings in this case, the purpose of the study is to measure the effect of the sense of belonging to the place in increasing the level of social security of citizens City of Qom. The research method is descriptive-analytic, and the questionnaire has been used to collect the field studies. The results of the research indicate that spatial relationships and spatial arrangements in the neighborhood environment with the control and social abnormalities along with the physical and physical environment have a significant correlation. Similarly, the type of form and the size of space, which is another component of the sense of belonging to the place, has a solidarity with social abnormalities and freedom of movement. The texture and decorations of the neighborhood space have a correlation with physical and physical environment. Among them, the most correlation between dimensions of sense of belonging to place and social security is related to the freedom of movement component with the form type and space size of 0.980.

Gholam Dolati, Hasan Afrakhte, Farhad Azizpor, Taher Parizadi,
Volume 21, Issue 62 (9-2021)
Abstract

Rural services and the power and location of rural services are one of the important issues in planning. In examining patterns and systems of rural services, the status and importance of each village in terms of utilizing a variety of rural services and its ability to receive or transfer Services are considered as an essential element and element. The spatial analysis of services can be described and explained in the context of distributive justice. The rural areas of the Tankeman district of the Alborz province have faced rural immigration in recent years, while faced with challenges in terms of enjoying some rural services. In order to plan and optimize the rural service system in this section, it is necessary first of all to evaluate the situation of each village in terms of utilizing rural services. Based on this, by providing a questionnaire from 16 selected villages in this section, the status of each village was evaluated for different types of rural services based on the number of existing services and the decision matrix was formed and then through Antherapy method, the weight of each specified service and then prioritized by using COPRAS  model. The results show that the main village has basic services. But they are facing challenges with modern and new services. Accordingly, the villages of Bakhtiar, Nukand and Mohammad Abad Khalisheh, Kareem Abad, Qasem Abad and Dengizak have the most benefit from rural services, and this situation follows a cluster pattern.

Farshad Pazhoh, , Mehry Akbary, Mohammad Darand,
Volume 21, Issue 62 (9-2021)
Abstract

The aim of this study is to identify the spatial distribution of Vertically Integrated Moisture Flux Convergence (Vertically Integrated) Moisture Flux Convergence) on Iran’s atmosphere. To achieve this aim, the monthly ECMWF gridded data used during the period from 1/1979-12/2013. First, based on the specific humidity content in the atmosphere, troposphere divided into three layers (850-1000hPa), mid (700-775hPa) and upper (500-600hPa). In order to achieve VIMFC spatial variations on Iran, spatial self-correlation methods   of globular moron and hot spots used at 90, 95, 99 and 99/99 percent significance levels. The results of this study showed that the spatial distribution of VIMFC in Iran during the first layer of troposphere and especially during warm months of year has a high cluster pattern and in cold months of the year and in the third layer of troposphere cluster pattern decrease. Based on the hot spots index in the first layer of troposphere low height regions, in the second layer of troposphere the  high regions of the Alborz, zagros and central mountains and in the third layer of troposphere alpine regions of central and eastern Iran's mountains has positive spatial self-correlation (hot spots). The results show that in winter and autumn during the second period (1999-2013), the range of hot spots of the VIMFC show a significant reduction compared to the first period (1979-1998) on Iran.

- Mohammad Motamedi Rad, Dr Leila Goli Mokhtari, Dr Shahram Bahrami, Dr Mohammad Ali Zanganeh Asadi,
Volume 21, Issue 62 (9-2021)
Abstract

Groundwater resources are important part of the sweet water available to humans. The present study studies and evaluates the quality of water resources of karstic basin of Roein Esfarayen. For this purpose, sampling of water from water sources was carried out and groundwater quality of the area was evaluated in terms of drinking, agriculture and industry using Schoeller, Wilcox and Langelier diagrams, Water Quality Index( WQI) and groundwater quality index (GQI). According to the results of the analysis of the samples taken and the relevant charter diagrams, most of the water sources in the area were in the good category for drinking. The results of the Wilcox diagram showed that only S7 (Springs of Zargara), S6 (Springs of Sarang Zwucha) and S20 samples (rivers at the basin outlet) had saline water but could be used for agriculture and the rest were suitable for agriculture. The water quality table of the region's springs in terms of industrial use also showed that all of the water samples of the region except the Springs of Sangvah, which contains sediment-bearing water, have corrosive properties. The WQI index is also indicative of the quality of all samples taken in drinking water, and only the surface water of the basin outlet whose WQI is above 50 is in good condition. Location and quality zoning of drinking water from the GQI index was also carried out. The GQI quality index in the region varied from 93.42 to 95.87 in the region. Therefore, it can be said that although the minimum quality of samples is related to surface water of the basin, but this quality value is also in the appropriate quality category. Therefore, in total, all the water resources of the study area are in the category of quality in terms of drinking water standards

Mohammad Ajza Shokouhi, Shirin Sabaghi Abkooh, Forough Kazaei Nejad,
Volume 21, Issue 62 (9-2021)
Abstract

A new urbanism theory has emerged in recent decades in response to numerous urban problems of the twentieth century, with the goal of creating vibrant, compact, diverse and desirable cities in terms of work, walking, life, and transportation options. In view of the widespread acceptance of this theory among the Iranian researchers, the aim of this study is to assess the sustainability of organic and planned neighborhoods in Mashhad based on the spatial-physical indexes of new urbanism. In this regard, two neighborhoods, Rah­Ahan (organic neighborhood) and the second phase of Rezashahr (planned neighborhood) were selected. This research method is descriptive- analytical and the mixed model of AHP and GIS has been used to assess the stability of two neighborhoods. Accordingly, the Sustainability Measurement Model was used as a hierarchy in the form of 7 physical-space indicators (type of road, pedestrian width, land use, area of lots, access to the center of the neighborhood, number of floors and access to public transport) . Tthe research results show that in Rezashhar, 68.43% of neighborhood area has moderate to high stability and 31.57%  of the total of the neighborhood area is the lack of stability, and in Rah­Ahan, 70.84%  of the total of the neighborhood has moderate to high stability and 29.16% of the total of the neighborhood is lack of stability. Therefore, according to the spatial indicators of the new urbanism, the neighborhood of Reza Shahr is more unsustainable than the old neighborhood of Rah Ahan. Therefore, this study shows the richness of traditional Iranian urbanization and the superiority of old neighborhoods. So, it can be said that traditional and organic urbanization is a more appropriate basis for applying the new urbanism approach and this approach can be used in the form of urban regeneration.

Asal Falak, Reza Boran, Farideh Asadian,
Volume 21, Issue 62 (9-2021)
Abstract

This study aimed to investigate the temporal-spatial and synoptic features of thunderstorms in southwest of Iran (Khuzestan, Chaharmahal & Bakhtiari and Kohkiluyeh & Boyerahmad Provinces) It was compiled using volatility indices during the period 1985-2015. Results of Frequency Analysis of Thunderstorms at Dezful Station with 479 cases the highest frequency and Ramhormes with 252 days had the lowest frequency. In terms of seasonal distribution, spring was the most abundant with 39%. On a monthly basis, April had the lowest frequency with 21% and August with only 2 cases. In terms of thunderstorms the highest frequency of thunderstorms with no thunder was 21 percent. Synoptic analysis: Most of the time there is a nave (at level 500) or low pressure in the west of the region, east of the Mediterranean Sea with its tabs clockwise. From the Red Sea and the Persian Gulf, they entered the south, southwest, and west of Iran On the other hand, the high-pressure system on the Gulf of Aden in the east of the region is round in the clock It has injected moisture, especially at a level of 850 millibars. Interaction between the two systems over the course of the day, It has injected moisture from three sources of the Mediterranean Sea, the Red Sea and then the Persian Gulf into the rising systems of the region. The low-pressure counterclockwise movement of the eastern Mediterranean, Along with the high-altitude clock movement over the Gulf of Aden, it has injected moisture at levels of 850 to 700 degrees.

Saeed Mohammadlou, Mohammad Mahdi Mozaffari, Babak Haji Karimi, Kamyar Kavosh,
Volume 21, Issue 62 (9-2021)
Abstract

One of the concepts that is widely considered in all societies today, especially in developed countries, is the electronic city. The e-city is not an invention or an innovative proposal, but a reality that has shown its place based on the needs of today's society. The aim of this study was to analyze the effect of components of business preferences in achieving e-city. This research is applied in terms of purpose and descriptive-analytical method. Data collection tool was a researcher-made questionnaire whose validity was confirmed as qualitative and quantitative validity and its reliability was confirmed using Cronbach's alpha method and combined reliability. In this study, in order to analyze the research data from the software SPSS and Amose were used. Findings of this study showed that the variables of customer knowledge, customer focus, customer lifetime value, value creation, technology, useful interaction and communication quality have a positive and significant effect on the realization of e-city. Among the research variables, the customer-centric variable with a path coefficient of 0.38 had the most impact and the customer knowledge variable with a path coefficient of 0.19 had the least impact.
Ms Zinat Ranjbar, Dr Pari Shokri Firoozjah, Dr Gholamreza Janbaz Ghobadi,
Volume 21, Issue 62 (9-2021)
Abstract

The aim of this study was to evaluate the status of urban resilience in the coastal cities of western Mazandaran province in peak travel conditions. Therefore, in terms of the nature of a descriptive-analytical research, in terms of purpose, it is an applied-developmental research based on survey and field methods. The method of collecting research data was based on the library method, documentation and field survey method (questionnaire tool). The study area is the western coastal cities of Mazandaran province (Noor, Nowshahr, Chalous, Tonekabon and Ramsar). One-way t-test was used to evaluate the status of urban resilience and its various dimensions. The sample cities are then compared and ranked with the Idas multi-criteria decision-making method based on the status of urban resilience and its dimensions. Excel, Spss and GIS software were used in the research stages. The final findings of the study, according to the general result of one-way t-test for the set of urban resilience dimensions, indicate poor resilience of coastal cities in the west of Mazandaran province in peak travel conditions. Also, according to the results of the Idas technique, out of five cities studied, three cities are in weak groups, ie "low resilience status and non-resilience". Therefore, the situation of urban resilience in the western coastal cities of Mazandaran province can be assessed as weak and undesirable based on the indicators of this study.

Samaneh Dousti, Zohreh Davoudpour, Leila Zare,
Volume 21, Issue 62 (9-2021)
Abstract

Urban neighborhoods are one of the vital elements of each city and the culture of urban residents is concealed in the texture and sinew of that .The advent of new technologies in urban life and percipitance of designers for construction of buildings led to reduce of fixation sense about their living environment and decrease social interaction. once the historical districts are regarded as symbols of security, comfort and authenticity of the residents, due to inefficiency and interruption of their structures, suffer instability and displacement of their residents.According to this, instability and displacement of inhabitants to districts of historical value are known as the main problem in these neighborhoods. The purpose of this study is to identify the effective factors of authenticity in historical textures of “Ferdowsi” neighborhood located in distrct 12 of Tehran by phenomenological approach.method. For this purpose, eight persons of  this neighborhood were selected by purposive sampling method were collected through questionnairs and profound individual interviews.After recording the interviews, they were implemented in Maxqda qualitative data analysis softwarethe data and analyzed by seven-based Colaizzi methods.Authenticity as one of the individual characteristics will have an effective factor in educating people to live as citizens in the external society and will have a controlling role on human behavior and performance in society. Therefore, preserving and protecting valuable historical monuments, buildings and places. In a neighborhood that is subject to the behavioral and functional characteristics of human beings, in addition to the permanence and sensory richness of the permanence and sensory richness of the space, it will be necessary to transfer originality from one generation to another.
 
Mina Eftekharnia, Keramatollah Ziari, Majid Naderi,
Volume 21, Issue 62 (9-2021)
Abstract

Today, the concept of competition has spread in the world in such a way that all countries and governments at the national, regional or local levels are looking for a way to expand and improve economic conditions in favor of investments to stimulate competitiveness. The study of regional development strategies is defined through more competitiveness in the field of capitalist relations and there is less indication of sustainable development concept. On the other hand, due to the complex relationship between environmental, social and economic systems, with the introduction of the concept of competitiveness in the development process, regardless of other subsystems, the field of environmental and social damage in urban and regional systems has arisen and consequences Such as uneven development, increasing social disparities and inequalities and environmental pollution, increasing energy consumption, traffic and other social, cultural and environmental issues; In a way that many metropolises of the world and even Iran are involved with these issues now.
In this research, due to the nature of the research, library methods have been used to review the theoretical literature related to the research and to identify indicators related to spatial analysis, content analysis methods have been used. In this regard, first, the activities with competitive advantage in Arak District have been analyzed, spatially using the indexing method and the position of cities has been determined based on the ability to compete in activities with competitive advantage. Then, according to the outlined landscape for Arak District, strategies, policies and spatial rules for use in the region have been written.
Aliakbar Anabestani, Mahdi Masoumi,
Volume 21, Issue 63 (12-2021)
Abstract

In the last decade, the lake tourism as one of the newest branches of natural tourism has been under attention of scientific societies. So that this type of tourism has grown significantly and many economic benefits for host communities has brought. The aim of this study is evaluating the factors affecting lake tourism development in Iran. In this regard, a wide variety of indicators in the dimensions of attractions, infrastructure, cultural acceptance, economic, social and environmental In the form of a questionnaire tourism experts and field studies were examined. For binary comparison and a final weight criteria and options, of AHP fuzzy, ANP and GRA techniques in the form of questionnaires and 20 teachers and experts from organizations linked to tourism have been used. The results confirms that: Based on the results of the paired comparison of factors affecting lake tourism of the development using multiple fuzzy AHP and ANP in terms of tourism experts, Criteria attractions by weight of 0.247 in fuzzy AHP and 0.246  in the ANP model and The criteria infrastructural factors weighing 0.229 in fuzzy AHP and 0.234 in the ANP model Has the greatest impact on the lake tourism of development. Finally, with the objective of ranking factors affecting the lake tourism of development in the villages surrounding the lake, using techniques GRA, found that conditions Dowbaneh and dasht Arjan villages are better than other villages and Qashm qavi and Arab Famour villages at the lowest level of lake tourism of  the development have been.


Mr. Farshid Azizkhani, Professor Mohammad Rahim Eivazi, Dr. Majid Mokhtarianpour, Dr. Muhammad Reza Esmaili Givi,
Volume 21, Issue 63 (12-2021)
Abstract

Geographical studies on food categorized in five scales; global and transnational, national and regional, urban, rural and agricultural, domestic scales of food consumption and the individual as a consumer. Based on this categorization, the present study is placed within urban and domestic scales. By accepting that population of Tehran metropolis will definitely increase in future and regarding that based on systematic approach and limits to grow theory (Meadows, Randers, & Meadows, 2004), no growth in the world will continue forever. We must consider factors that limit the growth of Tehran, besides factors provoke development. One of the limiting factors is the natural and geographical potential of Tehran metropolis. For this research among qualitative methods in futures studies, we chose the scenario, because this method "make the future more real for decision makers to force new thinking and decisions". In the formulation of food consumption scenarios, due to the diversity of stakeholders, the challenges and the types of issues and ambiguities, the approach of the Global Business Network (GBN) was chosen. To analyze the key factors and identifying the key variables the structural analysis method and MickMac software was used. Based on two key variables, technology, and consumer responsibility, four scenarios were created, these are four scenarios: Smart eating scenario, McDonaldization of Society scenario, Food Geography scenario, and Community Eating scenario. In this study, four alternative food futures have been presented for Tehran. In these scenarios, both desirable and undesirable futures are clearly and accurately depicted. The geography of food scenario due to the neglect of the environmental capacities and natural and geographic potentials is the most unsustainable scenario for the future of Tehran. Without scenarios, thinking about the futures of food in Tehran is very difficult and even impossible. These scenarios can help us take into account possible futures in today's decisions. Although this article does not predict a specific future for food in Tehran, But, given the recognition and sensitivity of the events, it can be very useful for long-term decisions.
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Anoshiravan Ravand, Shahriar Khaledi, Davod Hasanabadi,
Volume 21, Issue 63 (12-2021)
Abstract

The purpose of this study is to determine and predict the effects of climate change on architecture using climate models. By clarifying the consequences of the impact of urban architecture on climate change while using the data of surrounding stations with library and field data methods. The climatic parameters of precipitation, temperature and relative humidity of the synoptic station of Miyaneh city during a full period of 32 years (2018-1987) and the possibility of climate change with the models in this city were examined and after obtaining the relevant data Climate change was predicted for the next 84 years through the GCM and SDSM microscale and the AR4 (2007) - HADCM3 (Run 1) - SR-A2 scenarios. In order to evaluate the effects of climate change on the comfort climate of the region, among the bioclimatic models used, the Tarjong model was considered for two periods of 16 and 42 years. In the next 84 years, compared to the last 32 years, the cold months of May, June, July and August will turn into pleasant heat, and in September, the heat will have a great impact on the skin, which indicates a warm climate in the next 84 years. Architectures must be considered.
 

 
Mrs Elaheh Asgari, Dr Mohammad Baaghideh, Dr Majid Hosseini, Dr Alireza Entezari, Dr Asghar Kamyar,
Volume 21, Issue 63 (12-2021)
Abstract

Understanding the main components of the watershed water basin and analyzing their hydrologic behavior are among the key components of any planning and management procedures in the field of water resources engineering. Today, the need to use modern technologies in hydrological modeling of watersheds has been discussed more than before. The purpose of this study is the simulation of hydrological components in various land use categories in the catchment area of the Dez river basin. Since the tool used in the research is the SWAT model and the SUFI-2 algorithm, the database used include a range of input data. In order to determine the level of sensitivity of the model to the input parameters, global sensitivity analysis was performed. Then, by adjusting the selected parameters and using the observation current, the model was calibrated and validated for the periods 2007 - 1994 and 2013 - 2008, respectively. The coefficients of NS, R2, P-factor and R-factor confirmed the model's ability to simulate river flow in the studied basin. The results of the model showed that the areas with forest use share the highest contribution to aquifer nutrition, and the barren lands have the highest surface runoff. Surface runoff has the leading role in creating the main stream of the river and after that the main flow has been effective in this area. The forest use change to Agricultural lands and pasture will change the hydrological parameters of the basin, and the result of these changes will lead to the increase in the surface runoff, the reduction of nutrition of groundwater resources and the reduction of river basin water. The SWAT model can be used as a precursor model in watershed management studies.

 
 
Dr. Tahmoores Behrouzinia,
Volume 21, Issue 63 (12-2021)
Abstract

Concerning the importance of urban network studies and the role of hierarchy system in population decentralization in metropolitan areas, this paper by using acknowledged indicators and Grade of Membership (GoM) model and using Combined Analysis method has tried to find the changes in urban hierarchy of Khorasan region during the period 1956-2016. The outcomes show that urban system in Khorasan region as the one in the country was afflicted with inconsequentiality by 1986. However, during the period 1986-2006, the urban network in Khorasan region tended to reach to an equilibrium. Nevertheless, it has gone toward an imbalance during the period 2006-16. The outcomes also depict that the models and indicators did not work coordinated. While some indicators (such as Herfindahl and Entropy indexes) showed that, there were an equilibrium among the urban network in the region, some other (such as Primate City and Centrality indicators) showed increasing centralization and inconsequentiality. Accordingly, the study used “GoM model” and “Combined Analysis method” for the final analysis. The GoM used three variables that aimed to make the model more reliable: The Prime City Indicator, the Centrality Indicator and Equilibrium Indicator. With this methodological novelty, the analysis of the hierarchical patterns represented in the model by the multiple profiles were closer to what could be understood as a "methodological ideal", difficult to be applied empirically due to the complexity of the subject, but included in studies theoretically based. As for future studies, which will seek to understand the hierarchical urban organization of other regions of the country and of the world, these indicators may be incorporated if adapted to the regional reality.
 

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