درخت حوزه‌های تخصصی

Because of the limited capacity of coastal lands and conflicting interests among stakeholders for coastal resources, there are intensifying pressures to retain and provide more public access to the coast. Coastal gated communities have been developed increasingly in the middle shoreline of Caspian Sea in North of Iran. They are kind of exclusive space production as they restrict public access to the public resources of shoreline. As space production has roots in social processes, according to Lefebvre’s theory, there are two main approaches in the analysis of social phenomena. First is institutionalism and the other one is discourse analysis. Due to some weaknesses each approach suffered from, the discursive institutionalism became the main methodology to analyze the interaction of discourses and institutions in coastal exclusive space production.  Critical realism emphasizes the inherent feature of the world which is categorized into three layers of reality that are constructed by agents, discourses and structures. Rather than experiencing the world in constructivism or conceptualizing the world in interpretivism, critical realism supposes different ontology, the existence of hidden or invisible mechanisms behind what human understand from the social phenomena and though emphasizing on the causality of both agents and structures. This research aims to conduct the conceptual and methodological framework for the analysis of the exclusive space production as a social phenomenon in North of Iran with the help of critical realism perspective in discursive institutionalism approach. This could be a significant guideline for further researches on spatial evolution in coastal urban areas.  

Many parts of the world are affected by unusual events, natural disasters and incidents that aim for people’s life, property, and comfort and threaten their life and survival. Crises cause abundant and sometimes irreparable damages to countries and people along with adverse effects on social indexes.  Therefore, identifying, appropriate planning, and optimal Resilient crisis management are of the highest priorities in various countries. Due to its great destruction power, expansion of the destruction area, lack of the possibility of predicting the occurrence time, continued losses and threats in the form of aftershocks, extensive injuries, and numerous problems in disaster relief, considering the destruction of the infrastructural installations and essential arteries, earthquake is a very important factor in crisis management. Meanwhile, based on the existing information 69% of Iran’s surface is affected by active faults and is considered to be one of the countries prone to having earthquakes. Besides, the general weakness of structures has caused extensive casualties in disasters. In these situations control and managing crisis especially earthquakes are of extreme importance in the field of recognition, prediction and preparation before the occurrence, planning, control and guidance after the occurrence.  Obviously, achieving this aim requires rapid and simple access to correct and updated information and complicated analysis carried out by specialists and managers. On the other hand, more than 80% of the required information in crises is spatial-natured and earth-referenced. Applying GIS and related technologies can be of considerable help in collection, storage, classification and analysis of related spatial and descriptive data; and play a determining role in identifying and direct application in both prediction and prevention, and direct dealing with events.  In this article, we will study the role of GIS In planning urban Resilient and promotion helping dominate crises and their proper management, in order to reduce financial losses and injuries. Besides we try to examine the methods to identify and classify historical and worn structures with the aim of planning and priority setting of seismic improvements and retrofitting buildings against earthquakes. Given the fact that the greatest concentration of resilience in crises is on improving the city's cultural, social, economic, physical and organizational dimensions, the use of the capabilities of the GIS system is very useful given the rich information layers.

One of the mos t significant concerns of urban planners, at metropolitan cities, especially in old and worn out textures, is the reduction of the quality of life and the environment, so they are always seeking for a way to improve these qualities. Low level of available services and amenities, besides physical and social disorders, have caused numerous problems and have totally become as important factors of unsus tainability in such a metropolitan area. In this article, we aimed to identify those effective factors which contribute to environmental quality of neighborhoods, such as Cyrus in the city of Tehran, which have experienced urban decayed. A research method that was employed in this paper is descriptive – analytical. Data were obtained from ques tionnaires dis tributed to a randomly selected sample of 384 respondents also the interview technique was applied to gather data from residents. After that ques tionnaire was developed using the identified external and internal factors, and determined s trategies adminis tered to 30 experts in the field of urban planning. Further, experts participated in the formal group discussion in order to weight SWOT factors and prioritize the identified s trategies, respectively. The results of this s tudy sugges t that according to the perspective of residents, experts reflected in the s trategic analysis plan by using the SWOT, Internal and External (Matrix IE) and QSPM matrix; one of the key factors and the mos t preferred s trategy to improve environmental quality in Cyrus is considering social factors such as maintaining local and original residents, increasing safety/security, keeping identity of neighborhoods and creating open spaces and decent leisure places.

Today city residents are experiencing a new way of life which is unprecedented ever since the urbanization concept appearance. The continuous demand to build and maintain the real city space with all the well-known problems, alongside the simultaneous management of urgency and the presence of a developing virtual parallel world, has baffled the city's management sys tems and city's residents. One of the proposed solutions is employing a machine approach to solve these related issues. The general purpose of this research is to provide a comprehensive definition of the concept of urban technology synthesis in the area of physical space as an urbanism machine. This inves tigation is a comparative s tudy to allocate and provide a particular paradigm for the introduction of augmented reality ins tances utilizing matter and information combination via technology in urban spaces. After the semantic framework formulation of the mentioned concept, recognition of tools ins tances in the context of nowadays cities have been considered. In the process of this research, the phenomenon of augmented reality has been retrieved, with its definitions and capabilities as tools for the realization of technological synthesis in the context of current cities. Another result of this research is the introduction of some advantages in applying augmented reality in cities.

One of the results of urban renovation is population displacement. If these renovations lead to live prosperous social classes, it is called gentrification. In this regard one of the urban renovation strategies is gentrification that is equal in "the acceptability of texture in public opinion" and is known as a synonym of "improving the quality of living environment for residents and citizens". In Iran despite interventions that take place in inner-cities these interventions are not the examples of gentrification; accordingly, it must be understood that what factors influence these interventions and whether renovation of Iranian inner-cities can be occurred in the framework of gentrification? This article tries to review the Navvab Project, by using a descriptive – analytical approach and documentary – library survey. Therefore, while reviewing mentioned project, gentrification obstacles of this project and its generalizations to Iranian inner-cities, hypotheses in three levels, Macroscopic, Mesoscopic and Microscopic scales, have been explained and strategies for preparation of this process provided.

 This article addresses the analysis of the mechanism of natural air flow around the residential buildings  and the effect of the form of residential buildings on air flow among four building forms in Tehran. The aim of this research is to study the effect of the form of residential buildings on the mechanism of natural air flow with the purpose of optimally utilizing clean air. The research method is to use computer modeling and model analysis in the related software and conclusions have been achieved using comparison of outputs of the models produced. Accordingly, four samples were first selected from software forms and modeled in one commercial micro-climate simulator software. They were tested by entering Tehran climatic data and results were extracted as simulation images. Since the analysis was conducted in one hour interval in the morning of the 23rd of December 2013 among four selected forms. The results helped us to choose the optimal form among these cases. Thus, a general rule was not given regarding the case that the selected form is the best in all aspects. Research achievements indicate that building forms have a significant effect on local winds and air pollution reduction. Therefore, the general form of buildings affects the degree and type of pollution dispersion due to carbon dioxide and the retention effect of suspended particles.