Due to limited cognitive skills for perceptual error or other emotional reasons, players may keep their current strategies even if there is a more promising choice. Such behavior inertia has already been studied, but its consequences remained unexplored in the weak selection limit. To fill this gap, we consider spatial public goods game model where considered during imitation process. By using ...

Modern phylodynamic methods interpret an inferred phylogenetic tree as a partial transmission chain providing information about the dynamic process of transmission and removal (where removal may be due to recovery, death or behaviour change). Birth-death and coalescent processes have been introduced to model the stochastic dynamics of epidemic spread under common epidemiological models such as ...

We are interested in modelling Darwinian evolution, resulting from the interplay of phenotypic variation and natural selection through ecological interactions. Our models are rooted in the microscopic, stochastic description of a population of discrete individuals characterized by one or several adaptive traits. The population is modelled as a stochastic point process whose generator captures t...

Abstract This paper considers a continuous-time quasi birth-death ( qbd ) process, which informally can be seen as process of the parameters are modulated by an external Markov chain. The aim is to numerically approximate time-dependent distribution resulting bivariate in accurate and efficient way. An approach based on Erlangization principle proposed formally justified. Its performance invest...

the objective of this study is to determine risk factors causing increase in very low birth way (vlbw) neonatal mortality. the medical files of all neonates weighing ≤1500 g, born in vali-e-asr hospital (2001-2004) were studied. two groups of neonates (living and dead) were compared up to the time of hospital discharge or death. a total of 317 neonates were enrolled. a meaningful relationship e...