Maredj, Azze-EddineAlimazighi, ZaiaSadallah, Madjid2012-12-262012-12-262007-04-12http://dl.cerist.dz/handle/CERIST/11Multimedia presentation defines composition of different media having inherent or assigned temporal behavior: text, images, animations, audio and video. Temporal composition is the most important feature of multimedia presentations because it defines the overall scheduling of temporal events. In this paper, our goal is to propose an extension of Whal and Rothermel temporal model to increase its degree of expressiveness. For that, a new delay definition is proposed.enMultimedia documentConference paper