درخت حوزه‌های تخصصی

Urban heat island is a phenomenon caused by increased urban activities and transformations in the natural environment. Increased urban population and increase in the height of buildings, particularly in metropolitan areas, have led to vast changes in the urban geometry, amount of released heat, pollution rate, and meteorological parameters. All these factors contribute to the occurrence of heat island phenomenon in urban areas. Sky View Factor (SVF) is one of the main factors related to pollution, temperature variations, heat island, and other environmental parameters. Housing density policies stipulated in Tehran's detailed plan would possibly have several impacts on the sky view factor. The SVF axis of the Envi-met software uses various parameters such as topography, wind velocity, and urban morphology to simulate and measure sky view factor. This study aims to evaluate impacts of the future high-rise developments, in the Narmak neighborhood of Tehran through modeling future changes in the sky view factor. For this purpose, data related to Haft Hoz square located in the Narmak neighborhood was collected, simulated and analyzed using SVF. Results indicate that in the business as usual scenario, the factor’s value would be in a range between 0.19 and 0.77; whereas, by implementing the scenario proposed in the detailed plan the factor will decrease to fall in a range between 0.08 and 0.69. This reduction in the intensity will possibly increase heat island impacts in the study area. This study emphasizes the necessity of taking compensatory policy measures and incorporating environmental considerations in urban development plans.

In this paper, the build and survived railway stations over the time at which first railway line construction started at Turkey until the present had been exامینed and the ones which were out of use and lost their original function with time had been determined. Also the determined building stock had been evaluated based on the principle of giving new function to the old buildings, in especial of station buildings. The obtained data had been scanned by means of software prepared by the expert system approach in order to make a priority order for buildings. The priority order of 40 stations which found to be eligible for re-usage and had been chosen among the exامینed 580 stations had been made . In this way discarded railway heritage action plan has been prepared for the solution of problems in the state. The solution proposes is guiding many countries, especially in Turkey.

The importance of aesthetics in perceiving urban landscape seems to be essential. Usually, the subject of aesthetics holds a position in ideas and viewpoints of philosophers. In Islamic perspective all the creatures are beautiful due to their connection to the creator of all the beauties. In this research, the subjects such as landscape perception, landscape aesthetics, perception in viewpoints of Iranian Islamic philosophers, and aesthetics in both Holly Quran and ideas of Iranian Islamic philosophers are surveyed and analyzed. The purpose of this paper is to obtain some answers for these two questions: what are aesthetics indicators in Islamic view? How is landscape perception explained by these indicators? This is descriptive-analytic research. The findings are that Islamic philosophers consider absolute beauty, God, as origin of all the beauties. On the other hand, Islamic philosophers are believed to be holistic, using atomistic approaches. In addition, consideration to both subjective and objective axes in landscape aesthetics is thought to be necessary. Finally, indicators and components of Islamic aesthetics are introduced and landscape perception is provided based on these indicators in two fields of sensory-visual and social perceptions according to three perceptual fields of sensory, imaginary, and rational. How is landscape perception explained by these indicators? This is descriptive-analytic research. The findings are that Islamic philosophers consider absolute beauty, God, as origin of all the beauties. On the other hand, Islamic philosophers are believed to be holistic, using atomistic approaches. In addition, consideration to both subjective and objective axes in landscape aesthetics is thought to be necessary. Finally, indicators and components of Islamic aesthetics are introduced and landscape perception is provided based on these indicators in two fields of sensory-visual and social perceptions according to three perceptual fields of sensory, imaginary, and rational.

Defining space by dividing it to inside and outside is one of human’s ways to recognize his position in environment. Architecture is created to response to this need for inside/outside spaces. Design of inside and outside Spaces and relation between them always has been one of necessities for definition and limitation of human living spaces, but little attention to relation of this two spatial realms and poor design of transitional spaces between them has caused to lack of quality in current Iranian architecture. This study aims to explore relation of inside and outside in architecture and focus on condition of transition, boundary and connection of those. For achieving this purpose concept of inside, outside and in-between has been investigated and by exploring cases of this kind of connection (especially in past and recent Iranian architecture), the aims, approaches, functions and physical forms of in-between spaces has been presented. This results and findings can enhance design considerations of in-between spaces especially in architecture of Iran’s big cities. Literature reviewed has shown importance of in-between space design as another kind of space: either inside and outside, neither one of them.

The expansion and growth of cities is a remarkable phenomenon in urban planning literature, so that unpredictable developments have become more evident in recent decades, especially in cities that have undergone changes in their physical structure following the promotion of their political role. The present paper seeks to identify the factors driving growth in the developed areas of Ardebil city and extract basic factors and variables by investigating development of Ardebil. In this study, 27 variables have been tested in 920 expansion blocks during the years 1996 to 2011 using GIS and factor analysis. Four main groups including congestion factor, external factor, access factor and facilities are identified as driving forces of growth. The final combination of four factors in the Arc GIS environment show that the north, east and south east blocks of Ardebil had a higher score than the other blocks; in other words, these factors have the most effect on the growth of these areas. In addition, the Southwest blocks with the lowest score of between 0 and 2 have had the least impact from among the factors mentioned.