@conference {2835, title = {A Framework for a Distributed Information Service Using Hypermedia/Multimedia Pre-Orchestrated Scenarios}, booktitle = {10th International Conference on Parallel and Distributed Computing and Systems-Special Session on Communication and Computing for Distributed Multimedia Systems, Las Vegas, Nevada, USA}, year = {1998}, month = {28 - 31 October}, pages = { 226 - 229}, abstract = {Real time delivery of multimedia objects based on preorchestrated scenarios, seems to have several difficulties due to presentation deadlines that should be satisfied, and network{\textquoteright}s unpredictable behavior which may lead to synchronization anomalies among related media streams. Beyond these, a structural model that represents such scenarios is required. In this paper, we present a general framework that addresses the above mentioned issues, and we attempt to describe a unified approach for delivering hypermedia/ multimedia objects over network connections preserving their timing constraints. We mainly concentrate on the study and development of a markup language that models the presentational structure of a multimedia object and provides primitives that assure playout synchronization of the different media streams that compose these hypermedia objects. Methods for keeping a constant quality level of presentation in times of network load are discussed.}, author = {Christos Bouras and Vaggelis Kapoulas and D Moiras and V Ouzounis} }