درخت حوزه‌های تخصصی

Microclimate in open space affected by the urban layout and spatial forms plays an important role in the outdoor comfort, thus the outdoor activities based on the comfort sensation will directly affected by the spatial forms. An outstanding open space should satisfy different requirements of outdoor activities and create relatively comfortable place.Most studies have been conducted on these relationships only above 0 Celsius degree. However, only few have focused on extreme situations in both hot summer and cold winter. Therefore, from microclimate perspective, taking people’s comfort and spatial behaviors as criterions, this research discussed how the open space forms affect microclimate, thus affect comfort sensation and spatial behaviors. The outcomes may provide some useful insights for planners and architects to understand the relationship among microclimate, open space and people. Results showed that in hot season, shade and air-flow played crucial roles in outdoor comfort. More people tend to stay outside in the shade and the area with higher air velocity. After sunset is popular period for outdoor activities. The ambient temperature lower than 29.6 ℃ , air velocity higher than 1.1m/s and relative humidity higher than 67% is needed to achieve neutral comfort sensation. In cold season, at the same ambient temperature, lower air velocity raised the comfort level. Shade also had influences on comfort sensation but do not affect spatial behaviors significantly. The ambient temperature higher than -14.4 ℃ , air velocity lower than 1.6m/s is the thresholds for an acceptable outdoor environment.

 One of the mos t important principles in the formation of Iranian-Islamic cities is the principle of unity. Observing the principle of unity in the physical-social space of his torical neighborhoods has led to the organization and integration of them. A review of s tudies on this issue indicates that the principle of unity in the scale of urban neighborhoods has been less considered. The main ques tion of the s tudy is how and with what factors and criteria was the principle of unity formed in the physical space of Sarshoor neighborhood, Mashhad city? This s tudy is his torical and analytical research. The research process is divided into two main s tages. In the firs t s tage, it is attempted to determine how the spatial s tructure of the Sarshoor neighborhood was before the extensive physical-spatial interventions taken in the contemporary era. In the second s tage, the factors and criteria related to the principle of unity are determined on the maps and photos of the neighborhood in an exploratory way and using the relevant graphical analysis. The results show that in the his torical neighborhood of Sarshoor, a set of factors in a complex and close relationship with each other, have been effective in unifying the physical space of the neighborhood. Factors including "connectivity and continuity", "centrality", "hierarchy", "coordination", "interconnectedness" and "semantic unity" have been effective in realizing the principle of unity in the neighborhood by creating various qualities in different dimensions of physical space of the neighborhood. 

Density is a critical typology in determining sustainable urban built-form patterns. Built-form refers to the assemblage and arrangement of the building masses in a city reflecting the spatial layout of spaces. The relationship between density and urban character is also based on at certain densities (thresholds). In a wider sense, sustainable cities are a matter of density. Recent debates about the creation of more sustainable urban form, compact cities have led to a renewed focus on issues of density. The argument is that high density high-rise with low ground coverage or compact city form can offer a high quality of life while minimizing crime, possibility to provide adequate amenities, green and open spaces, accessibility and space consumption. However, the relationships of density and patterns built-form are not reasonably well developed and integrated into the urban design-planning processes in developing countries cities like Addis Ababa. On the hand, not many studies have been undertaken with regard to density in relation to patterns of built-forms. Therefore, this study aims to explore density in relation to patterns of built-form in the process of planning & design of urban spaces2. The analysis is based on the primary sources as well as secondary documents collected from the concerned agencies and related references. The findings illustrate that high density high-rise with low ground coverage patterns of built-forms can offer better possibilities for installing good spatial quality3 of urban spaces. It concludes with an overview of emerging thinking/implications where further efforts are required in the future

Technology affected human life in many ways in different eras of mankind history. Today, the information and telecommunication technology has revolutionized basic structures of human life. Changes are from the whole to the parts and vice versa, which include family and society too. Family lost its former structure in the information age and differentiated from patriarchy family. Societies have been formed based on logic of networking and new network societies are predominant form of our societies with their advantages and flaws comparing with the traditional societies. Basic concepts of the life i.e. space and time also have been transformed and living in space of flows and concurrency of functions require a special structure or body. Architecture constitutes the body of our societies which must meet physical and mental needs of humankind. In a transforming world, architecture is connecting ring between society and surrounding environment, previous traditions and future world, which its borders between reality and virtuality are very close. Architecture with a global-local approach can assist human who is wondering in the virtual world to redefine its own identity and finds its position in labyrinth of global networks and also safeguards his survival via respecting nature and paying attention to sense of place as one of the principles of vernacular and traditional architecture. Technology has affected on the architectural design, leading to creation of new shapes and distinct erections. Architectural design by employing networks and collective intelligence, overcome temporal and spatial limits and became a collective activity. Architecture by creating spaces according to global, regional and local considerations and emphasis on principles of design supported by collective intelligence and strengthening bonds among the human, nature and technology, will act as a panacea which will heal crisis of identity and cultural multitude; the crisis that storm out human body and soul in our present stressful world.