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An application of the entropic theory of perception to evolutionary systems indicates that environmental entropy increases will exert pressures on an organism to adapt. We speculate that the instability caused by such environmental changes will also cause an increase in the mutation rate of...
Matrix population models provide a natural tool to analyse state-dependent life-history strategies. Reproductive value and the intrinsic rate of natural increase under a strategy, and the optimal life-history strategy can all be easily characterised using projection matrices. The resultant...
Apical cells are universally present in lower plants and their description has been mostly viewed morphologically as single-celled meristems. This study attempts to demonstrate that the roles of apical cells and more generally of meristems collectively are (a) often the proliferative source of...
A theory of embolism based on an optimization model of blood flow is proposed and used to explain the topographic distribution of emboli in arterial trees.
The genetic communication system includes the following components: the parent, which represents the information source and which emits messages; the gametes, which are the messenger carriers; and the offspring, which results from the decoding of two of these messages and can, in turn, become an...
Epidemiology is a science of disease which specifies rates (illness prevalences, incidences, distributions, etc.). Evolution is a science of life which specifies changes (gene frequencies, generations, forms, function, etc.). ‘Evolutionary Epidemiology’ is a synthesis of these two sciences which...
The concept of “predisposition” in medicine is ancient, and the term “diathesis” was used to express it since the days of Hippocrates and, especially, of Galen.
The growth activity of an organ (variable y) is defined simultaneously by the instantaneous absolute ratedy/dt and its variationd
2y/dt2. The use of these two descriptors allows a sigmoidal (i.e. continuous and non periodical, as observed for the logistic function) growth curve to be discretized...
Reconsideration of the logistic equation and of its expansion to the special and general Volterra competition equations in terms of mass/energy in phase-space, shows that information on the phase-spatial conditions of resource and consumers determines specific population parameters which, in...
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