Systems modelingSystems modeling or system modeling is the interdisciplinary study of the use of models to conceptualize and construct systems in business and IT development. A common type of systems modeling is function modeling, with specific techniques such as the Functional Flow Block Diagram and IDEF0. These models can be extended using functional decomposition, and can be linked to requirements models for further systems partition.
Facial hairFacial hair is hair grown on the face, usually on the chin, cheeks, and upper lip region. It is typically a secondary sex characteristic of human males. Men typically start developing facial hair in the later stages of puberty or adolescence, around fifteen years of age, and most do not finish developing a full adult beard until around eighteen or later. However, large variations can occur; boys as young as eleven have also been known to develop facial hair, and some men do not produce much facial hair at all.
Modernité comportementalevignette|redresse=1.4|Art pariétal du Paléolithique supérieur (), grotte de Lascaux en France. La modernité comportementale est un ensemble de caractéristiques cognitives et comportementales qui distinguent l'Homme moderne des autres espèces et populations humaines préhistoriques dites archaïques. Quoique la définition soit souvent débattue, de nombreux chercheurs s'accordent sur le fait que le comportement humain moderne est caractérisé par l'association de la pensée abstraite, la capacité de planification, l'extension du réseau humain des individus, la pensée symbolique (art, parure, musique.
