From: Age-specific contacts and travel patterns in the spatial spread of 2009 H1N1 influenza pandemic
Variable | Definition |
---|---|
k | Degree of a subpopulation, i.e. number of airline connections to other subpopulations |
V, V _{ k } | Total number of subpopulations, number of subpopulations with degree k |
N _{ k } | Population size of subpopulations with degree k |
w _{ kk '} = w _{0}(kk ^{'})^{θ} | Number of passengers flying from a subpopulation with degree k to a subpopulation with degree k’ |
w _{0} | Mobility scale |
d _{ kk '} = w _{ kk '}/N _{ k } | Diffusion rate of passengers flying from a subpopulation with degree to a subpopulation with degree k’ |