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 recent years, the issue of energy consumption modeling techniques in the building sector has been widely considered by researchers and managers. Researches indicate that energy consumption in residential sector is one of the main parts of the total consumption. Moreover, the urban residence is supposed as a significant consumer of energy in every country and therefore a focus for energy consumption efforts. For over increasing building energy consumption there can be some causes including : climate change, increase in household electricity load, fast-growing household electrical appliances, huge energy consumption of the buildings, and the lack of strict government supervision. Recently the issue of assigning different prices to different time-periods of energy consumption has been taken into consideration for energy prices of consumers’ bills. Therefore, in this paper a model for multi-prices and multi-periods single-type energy consumption in urban residential sector is presented; also an efficient heuristic method is provided for solving the mentioned model.

Islamic and Iranian cities, both, East and West, know the physical monuments of Islamic culture1 based on one of the features of the Islamic cities. Meanwhile, other religious centers, including Tkaya, Hosseiniyehiyeh and hospice is not the case to considerate, while these elements cause to shape group behavior, strengthen social ties and strengthening of cultural integration, have always played a major role. These reasons reflect the role of the religious and their religious mission to, Imam Hussein: have been lasting and eternal ever. On the other hand, religious buildings, including mosques, Hosseiniyehiyeh, the convent, the grave and so for various reasons such as “governing their spirituality,” “Historical Background”,“architectural style” and “cultural works - social among people of the past had been of special aspects “sanctity”. Materials and Methods, “descriptors” and “analytic” in addition, with reference to theories and models of sustainability and sustainable urban spaces using “argument” and “analog” to review these theories and extend them to Hosseiniyehiyeh and Tkaya discussed and some results in this direction are mentioned. Research findings show the survival of Tkaya and Hosseiniyehiyeh beliefs, beliefs, customs and religion of citizens, especially their integration with the components is related to religious values and reflecting the traditional city is based on the formation of beliefs is that survival, Protection and maintenance Hosseiniyehiyeh paid actor and in which viewers of this show and passionate Hosseiniyehi mourning single entity to have formed; If due to the impact of beliefs and opinions of people throughout history has been a Hosseiniyehiyeh as a phenomenon of religious values and that its inclusion has been persistent throughout history and reflect the beliefs of religious people and the world towards Imam Ali, Imam Hussein: future date will remain the eternal.

The appearance of Square in Northwest Iran, as a traditional element of the city, did not have a certain definition in the urban planning due to its structural disruption in the spatial fabric as well as its chaotic present in the manifestation of its identity. On the other hand, since the concept of the square in this area does not match to the similar models existing in the central plateau of Iran including the characteristics of being enclosed and architectural integrity, most researchers have assumed that the irregularity of the form in the squares of northwest Iran is because of gradual growth, lack of spatial desirability, and performance without a predesigned plan. This descriptive-analytic research studies the effect of climate on the formation of the structural layout of "Saheb Abad" Square as a case study. In this way, a specified framework would be suggested, and a fixed sustainable urban pattern would be achieved regarding the form of a square in modern urbanism in this region. According to the findings of this study, the disintegrated layout of the square in Northwest Iran is not only because of its structural weakness, but it was in certain parallels with environmental and natural conditions. It is obvious that the investigation of this innovation could lead to sustainable development in modern urban constructions.