RÉSUMÉ. Nous étudions dans cet article le comportement de plusieurs modèles de rétropertinence en mettant en avant leurs principales caractéristiques. Ceci nous conduit à introduire une nouvelle contrainte pour les modèles de rétro-pertinence, contrainte liée à la fréquence documentaire (DF) des mots. Nous analysons ensuite, d’un point de vue théorique, différents modèles de rétro-pertinence pa...

A tidal bore is a surge of waters propagating upstream as the tidal flow turns to rising and the flood tide rushes into a funnel shaped river mouth with shallow waters. The present study focused on the unsteady turbulence induced by a breaking tidal bore through some physical modelling. The laboratory data were compared systematically with some field measurements conducted in the breaking bore ...

— The solutions offixed-point équations for generalized (infinité) mords have previously been obtained asfrontiers of infinité trees. An algorithm is given which computes an explicit solution using a shuffle opération on words. This solution can be proven equal to the previous one so that the structure of the frontier s of infinité trees is completely analyzedfor those context-free grammars whi...

The Eastern Anatolian Plateau (EAP), approximately 2000 m above sea level, is located between the Pontides to north, Arabian Platform south, and Iranian east. It characterized by 6 km-thick Maastrichtian Quaternary volcano-sedimentary cover which unconformably overlies continental oceanic basement units. Overall, outcrops of pre-Maastrichtian are rare include both This led drastically different...