Entity Functional Behaviour Sample Clauses

Entity Functional Behaviour. In this subsection, we characterise the functional behaviour of the elements in Esperantia. We assume that element is associated to an operative level, i.e., a measure between zero and one, where one stands for complete operativeness and zero represent the complete halt. In order to support the modeller that will use the Esperantia reference data set, we provide a coarse grain description of the dynamics of the operative level OLA of each element A, consider- ing the effect of the dependencies highlighted above. Specifically, for each entity A we consider all the entities B on which A is dependent and we characterise the degradation of the operative condition of A based on the condition of the ser- vices provided by B (e.g., power), whose operative level is degraded when it is affected by a failure, disruption or attack. To keep the model simple, we depict such a degradation over time in terms of a sigmoid function, using the following formula: σA,B(t) = max 1 − OLB