Les Discamphiceratinae (Psiloceratidae), une nouvelle sous-famille d'ammonites (Cephalopoda) du Jurassique inférieur

The main reason for using visual languages is that they are often far more convenientto the user than traditional textual languages. Therefore, visual languages intended for use by both computers and humans ought to be designed and analyzed not only from the perspective of computational resource requirements, but equally importantly, also from the perspectiveof languages that are cognitively usable and useful. Theoretical and practical research on visual languages need to takeinto account the full context of a coupled human-computer system in which the visual language facilitates interactions between the computational and the cognitive parts. This implies that theoretical analyses ought to address issues of comprehension, reasoning and interaction in the cognitive realm as well as issues of visual program parsing, execution and feedback in the computational realm. The human aspect is crucial to visual languages, and therefore weadvocate a correspondingly broadened scope of in..