Specification of multiparty audio and video interaction based on the Reference Model of Open Distributed Processing

The Reference Model of Open Distributed Processing (RM-ODP) is an emerging ISO/ITU-T standard. It provides a framework of abstractions based on viewpoints, and it defines five viewpoint languages to model open distributed systems. This paper uses the viewpoint languages to specify multiparty audio/video exchange in distributed systems. To the designers of distributed systems, it shows how the concepts and rules of RM-ODP can be applied.\ud \ud The ODP ¿binding object¿ is an important concept to model continuous data flows in distributed systems. We take this concept as a basis for multiparty audio and video flow exchanges, and we provide five ODP viewpoint specifications, each emphasising a particular concern. To ensure overall correctness, special attention is paid to the mapping between the ODP viewpoint specifications

An Object-Oriented Information Model for Policy-based Management of Distributed Applications

International audienceThis paper presents an object-oriented information model to support a policy-based management for distributed multimedia applications. The information base contains application-level information about the users, the applications, and their profile. Our Information model is described in details and its specification in UML is provided. This paper presents our approach, methodology and results. This research work has been conducted in the context of the RTIPA (Real-Time Internet Platform Architecture) European project

Pensando la educación en medios desde los discursos: psicológico-biomédico, hermenéutico-construccionista post-estructural y crítico. Cuatro miradas al sujeto joven que educamos

El texto que sigue resulta de una re-construcción de cuatro aproximaciones -biomédica-evolutiva, crítica, hermenéutico-construccionista y post-estructural- a la educación en medios con jóvenes en contextos educativos formales, entendida ésta en un sentido amplio como la enseñanza y aprendizaje de los medios de comunicación analógicos y digitales. Uno de los propósitos de la re-construcción tiene que ver, en primer lugar con la visibilización de la diversidad de opciones y epistemologías disponibles a la hora de plantear un escenario formativo en educación con medios, y con las posibilidades formativas que dicha multiplicidad nos ofrece..

A Comparative Study of Policy Specification Languages for Secure Distributed Applications

This paper presents a comparative study of policy specification languages. Our objective is to find policy language or notation that is the most suitable to express the security aspects of distributed applications running on policy-based networks. We first made a selection of languages and we compare them on several criteria: their suitability to specify security, their ability to express both user and network oriented security aspects, the representation technique they use and the notions they are able to express. This paper concludes on a discussion on what would be the ideal policy language for distributed applications that have strong security constraints

A Comparative Study of Policy Specification Languages for Secure Distributed Applications

This paper presents a comparative study of policy specification languages. Our objective is to find policy language or notation that is the most suitable to express the security aspects of distributed applications running on policy-based networks. We first made a selection of languages and we compare them on several criteria: their suitability to specify security, their ability to express both user and network oriented security aspects, the representation technique they use and the notions they are able to express. This paper concludes on a discussion on what would be the ideal policy language for distributed applications that have strong security constraints