Markov modelIn probability theory, a Markov model is a stochastic model used to model pseudo-randomly changing systems. It is assumed that future states depend only on the current state, not on the events that occurred before it (that is, it assumes the Markov property). Generally, this assumption enables reasoning and computation with the model that would otherwise be intractable. For this reason, in the fields of predictive modelling and probabilistic forecasting, it is desirable for a given model to exhibit the Markov property.
Comportement passif-agressifUn comportement passif-agressif est un ensemble d'attitudes dites passives qui expriment indirectement une hostilité cachée qui n'est pas assumée ouvertement ou qui demeure inconsciente pour le sujet. D'abord décrit comme un trouble comportemental, il fut retiré du DSM-IV par manque de précision. Ce trouble comportemental couvre un spectre nébuleux de symptômes corrélés à des attitudes comme la rancune, la frustration, le malaise relationnel...
OverpopulationOverpopulation or overabundance is a phenomenon in which a species' population becomes larger than the carrying capacity of its environment. This may be caused by increased birth rates, lowered mortality rates, reduced predation or large scale migration, leading to an overabundant species and other animals in the ecosystem competing for food, space, and resources. The animals in an overpopulated area may then be forced to migrate to areas not typically inhabited, or die off without access to necessary resources.
