نتایج جستجو برای: urban population will reach 70 percent in 2050urban areas
تعداد نتایج: 17133563 فیلتر نتایج به سال:
today the image of a permanent skeletal space of cities affected by some forces or mechanisms is put in time with social-economic development and while imposes a new face and perspective to physical anatomy of cities, and prepares field to changes in content and social- economic structures of cities too. simultaneously with quitting villages in order to settle in cities by villagers, the phen...
nowadays,tourism industry considered as one of the main sources of income of a country.unfortunately and despite of owning plenty of cultural historical and natural attractions, iran has not reached to a proper position in this field. besides, the historical cities of a country are considered as the income resource and national wealth of it. qazvin with a rich cultural precedent, have suitable ...
the west of esfahan province, iran, is one of the most important agricultural areas throughout the country due to the climate variability and life-giving water of zayanderood river. rice is one of the major and economic crops in this area. the most important climatic elements in agricultural activities which should be considered include temperature, relative humidity, precipitation and wind. so...
there is no doubt that human being needs to become integrated with industry and industry needs to be progressed, daily. on the other hand, serious events in industrial units specially in oil industries has been shown that such damages and events are industry related ones. the consequence of such events and damages which resulted in chemical and poisoned explosions and loss of life and property ...
abstract: one of the most visited & important spaces in different countries by tourist are urban areas. the old tehran which major part is located in district 12 is historical showcase of the capital, but, its hiidden cultural attraction is not used as it should be. this thesis occasionally engage in studying the efficacy of correct installation of travel guide boards in welfare & easily acc...
Urban areas consume more than 66% of the world's energy and generate more than 70% of global greenhouse gas emissions. With the world's population expected to reach 10 billion by 2100, nearly 90% of whom will live in urban areas, a critical question for planetary sustainability is how the size of cities affects energy use and carbon dioxide (CO2) emissions. Are larger cities more energy and emi...
the issue of sustainable development has been widely acknowledged and spread rapidly after united nations conference on environment and development in rio in 1992. considerable attention is given to urban settlement areas. thus, role of urban development is seen as a challenging issue under circumstances. outcomes of the current patterns of world population growth and industrial development are...
In the United States, 69 percent of the population lived in what the government statisticians call metropolitan statistical areas (MSAs) in 1970, 75 percent in 1980 and 77 percent in 1990. But while a greater proportion of the population is living in urban areas broadly defined, a smaller proportion is living and working in the central cities. In the 1950s, 57 percent of MSA residents and 70 pe...
This paper presents estimates of infant and child mortality in the rural and urban areas of Iran for 1989. Data are from a one percent sample of the urban and rural population. The study makes use of data on the number of children born alive and children surviving, classified by age of the mother. Based on these data estimates of infant and child mortality for the urban and the rural areas...
Today, half of the world’s population lives in urban areas. By 2050, 70 percent of the population will be urban. India has been witnessing massive urbanization. Over the six decades since independence, India’s population grew three-fold from 350 million in 1947 to 1027 million in the year in 2001. During the same period, the urban population grew almost 4.6 fold as fast – from 62.4 million to 2...
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