نتایج جستجو برای: state and urbanization

تعداد نتایج: 16931596  

Journal: :Environment & planning A 1996
J Shen N A Spence

"The population of China is still growing despite a dramatic decline in fertility in the past two decades. There are marked urban-rural differentials in fertility and, as a result, the pace of urbanization has significant effects on population growth. In this research an attempt is made to model urban-rural population growth in China. A demoeconomic model of urban and rural sectors is calibrate...

Journal: :Mathematical biosciences 2008
Ping Zhang Peter M Atkinson

This paper models the impact of urbanization on infectious disease transmission by integrating a CA land use development model, population projection matrix model and CA epidemic model in S-Plus. The innovative feature of this model lies in both its explicit treatment of spatial land use development, demographic changes, infectious disease transmission and their combination in a dynamic, stocha...

2013
Molly Fox Leslie A. Knapp Paul W. Andrews Corey L. Fincher

Background and objectives: Alzheimer’s disease (AD) shares certain etiological features with autoimmunity. Prevalence of autoimmunity varies between populations in accordance with variation in environmental microbial diversity. Exposure to microorganisms may improve individuals’ immunoregulation in ways that protect against autoimmunity, and we suggest that this may also be the case for AD. Her...

2009
Alisson F. BARBIERI Roberto L.M. MONTE-MÓR Richard E. BILSBORROW ALISSON F. BARBIERI

Recent evidence indicates profound changes in population mobility in the Amazon frontier. Following the earlier large-scale migration influxes from long-settled regions, the most dramatic forms of population mobility under way are currently within the frontier. In particular, more and more rural households see temporary or permanent mobility of one or more family members to urban areas as a way...

Journal: :Allergy 2010
J Eriksson L Ekerljung J Lötvall T Pullerits G Wennergren E Rönmark K Torén B Lundbäck

BACKGROUND Various studies have reported a low prevalence of allergic rhinitis in farmers and farmers' children. We sought to investigate whether the protective effect of childhood farm environment is conserved throughout adulthood and how it corresponds to different degrees of urbanization. METHODS A questionnaire on respiratory health was mailed in 2008 to 30,000 randomly selected subjects ...

2017
Kana Ram Jat Sushil Kumar Kabra

Asthma is increasing worldwide secondary to both increasing access to healthcare with more and more asthma recognition and to urbanization. Asthma in children is different from adult with multiple phenotypes and variable natural course. It is frequently underdiagnosed and undertreated that result in poor quality of life in children and their parents. Asthma in children has significant socio-eco...

2014
Giulio Bottazzi Giovanni Dosi Giorgio Fagiolo Angelo Secchi

This work explores the spatial distribution of productive activities in the Italian manufacturing industry. We propose an econometric model which tries to disentangle locationspecific from sectoral drivers in the dynamic process of spatial agglomeration. The basic idea is that the former typically apply “horizontally” (i.e. across all industrial sectors), while the latter unfold in the form of ...

2009
Fangxu Ren

With the development of urbanization, the construction of town informationization is becoming more and more urgent and important in China. At present, the consciousness of town informationization is not deep; the information application is not of large scale; information-based talents are not enough and the information industry is of low level. Besides, lots of towns don’t know what to do and h...

2012
T. V. Ramachandra Bharath H. Aithal

Urbanisation and associated growth patterns (urban sprawl) are characteristic of spatial temporal land use changes taking place at regional levels. Unplanned urbanization and consequent impacts on natural resources including basic amenities has necessitated the investigation and understanding of mechanisms and dynamics of land use and land-use change on a range of spatial scales and evaluate th...

2007
Amitabh Kundu

Migration and urbanization are direct manifestations of the process of economic development in space, particularly in the contemporary phase of globalization. Understanding the causes and consequences of the former in terms of the changes in the distribution of population and economic activities, along with the success and failures of the interventions by state and other organizations would be ...

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