Results 251 to 260 of about 2,079,774 (295)

A socio-ecological System Dynamics model of antimicrobial use and resistance. [PDF]

open access: yesPLoS One
Redman-White CJ   +4 more
europepmc   +1 more source

Generation time and temporal scaling of bird population dynamics

Nature, 2005
Theoretical studies have shown that variation in density regulation strongly influences population dynamics, yet our understanding of factors influencing the strength of density dependence in natural populations still is limited. Consequently, few general hypotheses have been advanced to explain the large differences between species in the magnitude of
Sæther, B.-E.   +15 more
openaire   +6 more sources

A generalized epidemiological model with dynamic and asymptomatic population

Statistical Methods in Medical Research, 2022
In this paper, we develop an extension of compartmental epidemiological models which is suitable for COVID-19. The model presented in this paper comprises seven compartments in the progression of the disease. This model, named as the SINTRUE (Susceptible, Infected and pre-symptomatic, Infected and Symptomatic but Not Tested, Tested Positive, Recorded ...
Anirban Ghatak   +3 more
openaire   +2 more sources

General practitioner distribution and population dynamics: Munich, 1950–1990

Social Science & Medicine, 1994
The problem of variable geographic distribution of physicians appears to be universal and intransigent. There is growing evidence from several developed countries of primary physicians avoiding areas in large cities increasingly populated by poor and ethnic minorities. This paper extends the research to Germany.
G W, Shannon, M P, Cutchin
openaire   +2 more sources

Population dynamic models generating the lognormal species abundance distribution

Mathematical Biosciences, 1996
This paper deals with a new class of stochastic species abundance models where the abundances are the points of an inhomogeneous Poisson process. These models are the result of a dynamic approach in which the changes in abundances through time are described by a multivariate diffusion and speciation constitutes a homogeneous Poisson process.
Engen, Steinar, Lande, Russell
openaire   +3 more sources

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