A difference approximation to the second-order derivatives along the eigenvalue curve (scree plot) was calculated. This acceleration-approximation indicates points of abrupt change along the eigenvalue curve [39]. The number of eigenvalues before the point with the most abrupt change (the point ...
Infectious diseases have been known to exist since humans lived as foragers. Though, it was only after the shift to agrarian lifestyle some eleven thousand years ago, that the magnitude and spread of these diseases increased significantly (Dobson and Carper1996, Wolfe et al.,2007). The threat ...