The main scope of this paper is to present a set of enabling services that support the establishment and management of Virtual Enterprises and the integration and interoperation of business processes. Based on a virtual enterprise life-cycle model that we propose, different business domains can integrate their business processes in order to provide… (More)
In this paper we present a unified approach for delivering hypermedia/multimedia objects over broadband networks. The described service consists of several multimedia servers and a set of functions that intend to present to the end user interactive information in real-time. The hypermedia documents are structured using a hypermedia markup language that… (More)
In this paper we present a uniied approach for delivering hypermedia/multimedia objects over broadband networks. Documents are s t o r ed in various multimedia servers, while the inline data may reside in their own media servers, attached to the multimedia servers. The described service c onsists of several multimedia servers and a set of functions that… (More)
Real time delivery of multimedia objects based on pre-orchestrated scenarios, seems to have several difficulties due to presentation deadlines that should be satisfied, and network'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… (More)
Hypermedia is currently the trend in delivering information composed of various forms of media. Up to now most systems lack the ability to present the user with hypermedia information containing various media that have specific spatio-temporal relations. In this paper we propose and describe a model that can describe such kinds of hypermedia presentations.… (More)
In this paper, we propose an architecture for the on-demand delivery of multimedia documents over broadband networks using distributed objects. The basic components of our model are the network agents and the presentation agents. Our model preserves flexibility, transparency and modularity and value added opportunity due to the usage of distributed objects.
A brief abstract. In this paper we present a new model for hypermedia presentations. This model is based on an HTML-like language which provides the necessary modules for the intermedia synchronisation of the inline media that comprise the hypermedia document. The model also enables a distributed approach in the storage of the hypermedia documents.… (More)