نتایج جستجو برای: the population growth

تعداد نتایج: 16303255  

Ardalan, Ali, Rasel, Mehri,

This article is focused on ageing and the rapid ageing population growth, from future health care costs prospectus. It reviews ageing population statistics in several courtiers as well as Iran, to illustrate the significance of the ageing population growth in the next decades. Nevertheless, the health care costs for elderly people are described and the considerable differences between health ca...

2009
Michael A. Schuett Jiaying Lu

The study reported here assessed residents' perception of small, fast-growing coastal community on issues of quality of life, conservation, and growth. Data for the study were collected from an on-site survey in Aransas County, Texas from 2006 to 2007. Results show that the residents are concerned about preserving their natural resources, maintaining a small town atmosphere in their community, ...

2012
Hiroaki Sasaki

This paper builds a small-open-economy, non-scale-growth model with negative population growth and investigates the relationship between trade patterns and per capita consumption growth. Under free trade, if the population growth rate is negative and its absolute value is small, the home country becomes an agricultural country. Then, the long-run growth rate of per capita consumption is positiv...

2017
Philip Anglewicz Jamaica Corker Patrick Kayembe

The rapid population growth of many African cities has important implications for population health, yet little is known about factors contributing to increasing population, such as the fertility of internal migrants. We examine whether in-migrants to Kinshasa have different fertility patterns than lifetime Kinshasa residents, and identify characteristics of migrants that may explain difference...

Journal: :Theoretical population biology 2012
Yngvild Vindenes Bernt-Erik Sæther Steinar Engen

The development of stochastic demography has largely been based on age structured populations, although other types of demographic structure, especially permanent and dynamic heterogeneity, are likely common in natural populations. The combination of stochasticity and demographic structure is a challenge for analyses of population dynamics and extinction risk, because the population structure w...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2010
David B Saakian Araks S Martirosyan Chin-Kun Hu

We consider the finite generation-time effect in virus evolution models, introducing differential equations with delay. The suggested approach more adequately describes the evolution in case of growing populations than the popular models of population genetics, especially for the viruses with large number of offspring during one life cycle. Now the mean fitness, as a coefficient for exponential...

Journal: :American family physician 2013
Laura A Makaroff Larry A Green Stephen M Petterson Andrew W Bazemore

The physician workforce has steadily grown faster than the U.S. population over the past 30 years, context that is often absent in conversations anticipating physician scarcity. Policy makers addressing future physician shortages should also direct resources to ensure specialty and geographic distribution that best serves population health .

Population growth is a phenomenon that may not be explained only by relying on economic factors. Thus, this article tries to explain population growth issue according to Inglehart-Welzel's Modernization and Cultural Change Theory besides economic factors. It also tries to take a multidisciplinary approach to project and model the strategic variable of population on the basis of socio-economic v...

1997
TZU-LING HUANG PETER F. ORAZEM DARIN WOHLGEMUTH

Human capital raises rural incomes, but this effect is swamped by higher returns to human capital in urban markets. This leads to “brain drain” from rural areas. Populations grow more rapidly in rural counties that have a diversified employment base. Farm population grows faster (or declines more slowly) in counties with relatively high farm income, and nonfarm populations grow faster in counti...

2009
Indur M. Goklany

Concerns about population growth historically revolved around the notion that there may be insufficient arable land, minerals or energy to meet the needs of an exponentially increasing population. Today they are compounded by fears that as wealth increases, so would consumption of natural resources, and that new technologies would enable further exploitation of these resources. Absent empirical...

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