نتایج جستجو برای: urban migration

تعداد نتایج: 308987  

2017
Huizhong Shen Shu Tao Yilin Chen Philippe Ciais Burak Güneralp Muye Ru Qirui Zhong Xiao Yun Xi Zhu Tianbo Huang Wei Tao Yuanchen Chen Bengang Li Xilong Wang Wenxin Liu Junfeng Liu Shuqing Zhao

Direct residential and transportation energy consumption (RTC) contributes significantly to ambient fine particulate matter with a diameter smaller than 2.5 μm (PM2.5) in China. During massive rural-urban migration, population and pollutant emissions from RTC have evolved in terms of magnitude and geographic distribution, which was thought to worsen PM2.5 levels in cities but has not been quant...

Journal: :محیط زیست طبیعی 0
صبا رضا سلطانی گروه محیط زیست و انرژی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران سید مسعود منوری گروه محیط زیست و انرژی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران عبدالرسول سلمان ماهینی گروه محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان علی اصغر آل شیخ گروه مهندسی سیستم اطلاعات جغرافیایی، دانشگاه خواجه نصیرالدین طوسی

unplanned urban development imposes significant pressure on land resources and land use structures and brings about many negative socio-economic and environmental consequences. therefore, comprehensive studies should be applied to support urban land use management in the world and especially in developing countries. in iran, like many other developing countries, urban development is fast and of...

2017
Loc Duc Nguyen Ulrike Grote Rasadhika Sharma

This paper investigates the migration behavior of rural-urban migrants within Vietnam. It focuses on the length and intensity of migration and its respective determinants. The analysis uses panel data of 2200 rural households and data from a migrant tracking survey of 299 migrants from Vietnam. The findings show that migrants coming from rural households that faced a higher number of idiosyncra...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده علوم 1387

چکیده ندارد.

Journal: :Population research and policy review 2009
Alisson Flávio Barbieri David L Carr Richard E Bilsborrow

Since the 1970s, migration to the Amazon has led to a growing human presence and resulting dramatic changes in the physical landscape of the Northern Ecuadorian Amazon frontier, including considerable deforestation. Over time, a second demographic phenomenon has emerged with the children of the original migrants leaving settler farms to set out on their own. The vast majority have remained in t...

Journal: :Population research and policy review 2014
Heather F Randell Leah K VanWey

As urbanization rates rise globally, it becomes increasingly important to understand the factors associated with urban out-migration. In this paper, we examine the drivers of urban out-migration among young adults in two medium-sized cities in the Brazilian Amazon-Altamira and Santarém-focusing on the roles of social capital, human capital, and socioeconomic deprivation. Using household survey ...

Journal: :international journal of environmental research 0
k. baier department of engineering geology and hydrogeology, rwth aachen university lochnerstraße 4-20, 52064 aachen, germany k.c. schmitz department of engineering geology and hydrogeology, rwth aachen university lochnerstraße 4-20, 52064 aachen, germany r. azzam department of engineering geology and hydrogeology, rwth aachen university lochnerstraße 4-20, 52064 aachen, germany r. strohschön department of engineering geology and hydrogeology, rwth aachen university lochnerstraße 4-20, 52064 aachen, germany

in developing and newly industrialized countries, population growth and migration contribute immensely to the development of megacities and mega urban areas. in most cases, the rapid development ofcities has far-reaching consequences for the ecosystem in general and the hydrological cycle in particular. the developments in china within the last decades show an interesting, but complex setting. ...

2012
Hamid Beladi Reza Oladi

We construct a general equilibrium model of urban unemployment with a continuum of heterogeneous urban firms producing differentiated products in a monopolistic competitive market. We show that an increase in urban institutionally fixed minimum wage reduces urban aggregate output and each urban firm will experience an output cut proportional to the change in aggregate output. However, such prop...

2010
Ephraim Poertner Mathias Junginger Ulrike Mueller-Boeker

In Nepal, international labor migration to India and overseas as well as internal migration to the rural Nepalese lowlands are of a high socio-economic significance. Scholarly debates about migration in Nepal have gradually shifted from an economic to a more holistic perspective, also incorporating social dimensions. However, little evidence has been generated about internal migration to urban ...

2016
Abukari I Issaka Kingsley E Agho Andre M N Renzaho

OBJECTIVE The literature on the impact of internal migration on under-five mortality in sub-Saharan Africa has been limited. This study examined the impact of internal migration on under-five mortality rate in 27 sub-Saharan African countries. DESIGN The analysis used cross-sectional data from the most recent Demographic and Health Surveys of 27 sub-Saharan African countries. Information on t...

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