نتایج جستجو برای: distance to cities
تعداد نتایج: 10662026 فیلتر نتایج به سال:
We analyze the anonymous communication patterns of 2.5 million customers of a Belgian mobile phone operator. Grouping customers by billing address, we build a social network of cities that consists of communications between 571 cities in Belgium. We show that inter-city communication intensity is characterized by a gravity model: the communication intensity between two cities is proportional to...
Background and Objectives: The dust pollution in the air of cities is one of the environmental problems in the western and southwestern regions of Iran, which can have many effects on the environment and human life. The purpose of this study is the assessment of dust pollution, the effect of climatic parameters on it and the field of view in the southwestern regions of Iran. Methods: In this st...
From the beginning of their lives, human beings have been constantly faced with geomorphic threats, and these risks have led to human and financial losses in human habitats, especially in cities and villages, for human societies. One of these risks is earthquakes. According to a report by the United Nations Planning Office in 2002, Iran ranked first among the countries in the world in terms of ...
Spatial boundaries are a defining feature of a city’s social and spatial organization. Rivers, highways, and train tracks create excess distance between nearby locations and often mark social separation – they become dividing lines that are well known to residents. Qualitative studies are rich with insight about the local significance of boundaries, but they have been largely ignored in the qua...
The recent droughts in Iran made a decline in groundwater table and the migration of villagers to cities was hindered supplying drinking water for the current population. Therefore it should be considered as an important issue. In this regard, it is possible to achieve this goal by constructing underground dams that recently have been suggested to replace by medium and small overland dams. The ...
Urban projects are carried out with the aim of renovation and improvement of cities’ condition. Highways are one of urban projects addressing transport to solve traffic congestion in large cities. Sadr Multi-layered Highway in Tehran Metropolis is one of urban mega projects constructed in 2013 to improve traffic condition of private cars in northeast to northwest of Tehran. This research inves...
Cities are a place of accumulation of material and spiritual capital of humanity, which is of great importance. This type of settlement, with more than 50 percent of the world's population in it, has become more important in recent years and has been considered for the maintenance of principled and sustainable management of all types of planning. One of these plans has been the resilience of ci...
According the increasing population, especially the urban population in the world and increasing environmental pollution caused by it, The need for urban planning and management approaches based on indicators such as Healthy Cities approach seems inevitable. The purpose of this paper is to analyze the efficiency and ranking of healthy city indicators through 36 indicators (socioeconomic, health...
A study of distance estimations between German cities investigated the organization of mental maps and their specific deviations from reality. Potential factors for the deviation of mental maps from reality are physical barriers, emotional involvement, and semantic unity. Distance estimations between cities situated in different former parts of Germany (East or West) were systematically overest...
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