Results 41 to 50 of about 87,245 (163)
Stock assessment of protogynous fish: evaluating measures of spawning biomass used to estimate biological reference points [PDF]
, 2008 In stock assessments, recruitment is typically modeled as a function of females only. For protogynous stocks, however, disproportionate fishing on males increases the possibility of reduced fertilization rates.
Brooks, Elizabeth N. +3 more
core +1 more source
Empirical tests of natural selection-based evolutionary accounts of ADHD : a systematic review [PDF]
, 2016 Objective ADHD is a prevalent and highly heritable mental disorder associated with significant impairment, morbidity and increased rates of mortality.
Barke, Edmund +3 more
core +2 more sources
Characterising two-pathogen competition in spatially structured environments [PDF]
, 2014 Different pathogens spreading in the same host population often generate complex co-circulation dynamics because of the many possible interactions between the pathogens and the host immune system, the host life cycle, and the space structure of the ...
Colizza, Vittoria +5 more
core +4 more sources
Discrete Dynamics in Nature and SocietyRubella is a highly contagious viral disease that can be transmitted through contact with infected people or objects. If a pregnant woman is infected with rubella, the virus can be transmitted to the fetus, which can cause birth defects.
Getachew Teshome Tilahun +3 more
doaj +1 more source
Modeling the long term dynamics of pre-vaccination pertussis
, 2012 The dynamics of strongly immunizing childhood infections is still not well understood. Although reports of successful modeling of several incidence data records can be found in the literature, the key determinants of the observed temporal patterns have ...
Ana Nunes +4 more
core +1 more source
Pulse vaccination in the periodic infection rate SIR epidemic model
, 2006 A pulse vaccination SIR model with periodic infection rate $\beta (t)$ have been proposed and studied. The basic reproductive number $R_0$ is defined. The dynamical behaviors of the model are analyzed with the help of persistence, bifurcation and global ...
Haque, Mainul, Jin, Zhen, Liu, Quanxing
core +1 more source
Evolutionary dynamics, intrinsic noise and cycles of co-operation
, 2010 We use analytical techniques based on an expansion in the inverse system size to study the stochastic evolutionary dynamics of finite populations of players interacting in a repeated prisoner's dilemma game.
Bladon, Alex J. +2 more
core +1 more source
Spatial structures in a simple model of population dynamics for parasite-host interactions
, 2015 Spatial patterning can be crucially important for understanding the behavior of interacting populations. Here we investigate a simple model of parasite and host populations in which parasites are random walkers that must come into contact with a host in ...
Breecher, N. +4 more
core +1 more source
Fluctuations and correlations in population models with age structure
, 2000 We study the population profile in a simple discrete time model of population dynamics. Our model, which is closely related to certain ``bit-string'' models of evolution, incorporates competition for resources via a population dependent death probability,
Bernadelli H. +3 more
core +1 more source
Exploring local and global stability of COVID-19 through numerical schemes
Scientific ReportsRespiratory sensitivity and pneumonia are possible outcomes of the coronavirus (COVID-19). Surface characteristics like temperature and sunshine affect how long the virus survives. This research article analyzes COVID-19 mathematical model behavior based
Nan Xiao +4 more
doaj +1 more source