Results 111 to 120 of about 1,704,046 (402)
Demography beyond the population
, 2016 Population ecology, the discipline that studies the dynamics of species’ populations and how they interact with the environment, has been one of the most prolific fields of ecology and evolution.
A. Griffith +3 more
semanticscholar +1 more source
Demography-adjusted tests of neutrality based on genome-wide SNP data [PDF]
arXiv, 2013 Tests of the neutral evolution hypothesis are usually built on the standard null model which assumes that mutations are neutral and population size remains constant over time. However, it is unclear how such tests are affected if the last assumption is dropped.
arxiv
Numerical considerations about the SIR epidemic model with infection age [PDF]
arXiv, 2020 We analyse the infection-age-dependent SIR model from a numerical point of view. First, we present an algorithm for calculating the solution the infection-age-structured SIR model without demography of the background host. Second, we examine how and under which conditions, the conventional SIR model (without infection-age) serves as a practical ...
arxiv
Demography: To the limit [PDF]
Nature, 2012 More people are surviving to older ages than ever before, pushing life expectancy from birth to unprecedented highs. Further gains will require tackling age-related conditions, across the world, with ramifications for society as a whole.
openaire +3 more sources
Late Pleistocene Demography and the Appearance of Modern Human Behavior
Science, 2009 War and Peace? Modern behavior, including the development of advanced tools, musical instruments, and art, seems to have arisen in humans in stages. The earliest hints are seen in Africa about 70 to 90,000 years ago, but later in Europe about 45,000 ...
Adam Powell +2 more
semanticscholar +1 more source
The widespread opinion that demography is lacking in theory is based in part on a particular view of the nature of scientific theory, generally known as logical empiricism [or positivism].
Thomas K. Burch
core
On the weak solutions of the McKendrick equation: Existence of demography cycles [PDF]
arXiv, 2006 We develop the qualitative theory of the solutions of the McKendrick partial differential equation of population dynamics. We calculate explicitly the weak solutions of the McKendrick equation and of the Lotka renewal integral equation with time and age dependent birth rate. Mortality modulus is considered age dependent.
arxiv
Substantial demographic shifts are under way in many countries which could have a sizeable impact on trend growth rates over coming decades. This article explores some of these demographic developments, particularly in relation to population growth and ...
Andrew Stone, Jamie Hall
core
Demography and the Long-run Predictability of the Stock Market [PDF]
Stock market price/earnings ratios should be influenced by demography. Since demography is predictable, stock returns should be as well. We provide a simple stochastic OLG model with a cyclical structure that generates cyclical P/E ratios.
John Geanakoplos +2 more
core +3 more sources
Qualitative research about public health risk perceptions on ambient air pollution. A review study
SSM: Population Health, 2021 Background: Understanding public health risk perceptions is essential in efficient environmental health management. In the light of the negative impact of air pollution on health and the direct and indirect mediation of this impact through risk ...
Charlotte Noël +2 more
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