Results 21 to 30 of about 14,390,403 (390)
Population, Population Density, and Technological Change [PDF]
SSRN Electronic Journal, 2004 In a model on population and endogenous technological change, Kremer (1993) combines a short-run Malthusian scenario where income determines the population that can be sustained, with the Boserupian insight that greater population spurs technological change and can therefore lift a country out of its Malthusian trap.
Stephan Klasen, Thorsten Nestmann
openaire +7 more sources
Sample genealogies and genetic variation in populations of variable size [PDF]
Genetics 186 (2010) 601, 2009 We consider neutral evolution of a large population subject to changes in its population size. For a population with a time-variable carrying capacity we have computed the distributions of the total branch lengths of its sample genealogies. Within the coalescent approximation we have obtained a general expression, Eq.
arxiv +1 more source
On Gossip and Populations [PDF]
, 2010 Gossip protocols are simple, robust and scalable and have been consistently applied to many (mostly wired) distributed systems. Nevertheless, most validation in this area has been so far empirical and there is a clear lack of a theoretical counterpart to characterize what can and cannot be computed with gossip protocols.
Bertier, Marin +2 more
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Journal of Family Medicine and Primary Care, 2021 Background: Eye injury is a leading cause of monocular blindness and is second only to cataract as the commonest cause of visual impairment. Injury is the commonest reason for eye-related emergency department visits.
Waleed Abdulwahab Dhabaan +7 more
doaj +1 more source
West European Politics, 2019 The recent success of populist candidates in the UK and Continental Europe has sparked a major debate between those who view populism as a reaction of the economically ‘left behind’ and those who view it as a cultural ‘backlash’ by groups with declining social status, pointing to stark divisions between urban and rural areas, core and periphery.
Adler, D, Ansell, B
openaire +3 more sources
Food and Energy Security, 2020 While agricultural activities are a major drain on water resources in Rwanda, its high population growth continually escalates energy–water–food–land nexus pressures.
Katundu Imasiku, Etienne Ntagwirumugara
doaj +1 more source
Frontiers in Neuroscience, 2021 Objective: Graph theory applications are commonly used in connectomics research to better understand connectivity architecture and characterize its role in cognition, behavior and disease conditions. One of the numerous open questions in the field is how
Sahin Hanalioglu +9 more
doaj +1 more source
Shape of population interfaces as an indicator of mutational instability in coexisting cell populations [PDF]
, 2020 Cellular populations such as avascular tumors and microbial biofilms may "invade" or grow into surrounding populations. The invading population is often comprised of a heterogeneous mixture of cells with varying growth rates. The population may also exhibit mutational instabilities, such as a heavy deleterious mutation load in a cancerous growth.
arxiv +1 more source
The PAT model of population dynamics [PDF]
arXiv, 2021 We introduce a population-age-time (PAT) model which describes the temporal evolution of the population distribution in age. The surprising result is that the qualitative nature of the population distribution dynamics is robust with respect to the birth rate and death rate distributions in age, and initial conditions.
arxiv
Data-driven risk analysis of unmanned aircraft system operations considering spatiotemporal characteristics of population distribution [PDF]
arXiv, 2022 One of the challenges of Unmanned Aircraft System (UAS) operations is to operate an unmanned aircraft with minimal risk to people on the ground. The purpose of this study is to define and measure such risks as population risk, by incorporating spatiotemporal changes in population density.
arxiv