Model Management for Quality of Service Support

Quality of Service (QoS) management strategies have been first introduced in distributed multimedia systems to decide whether and controlling how multimedia streams can be delivered to the user within the given delay, cost or quality constraints. With the recent advances in the development of large-scale distributed applications where different services are provided to a large number of users, QoS management becomes and end-to-end functionality requiring the cooperation of all the system components. That leads to consider system components interoperability, management information integration and distributed execution of QoS activities. In this paper we examine modelling and meta-modelling issues for QoS management. More specifically we propose a meta-model for QoS management and we illustrate how such a meta-model is used for mapping QoS requirements to system constraints

A Framework for Quality-Driven Delivery in Distributed Multimedia Systems

In this paper, we propose a framework for Quality-Driven Delivery (QDD) in distributed multimedia environments. Quality-driven delivery refers to the capacity of a system to deliver documents, or more generally objects, while considering the users expectations in terms of non-functional requirements. For this QDD framework, we propose a model-driven approach where we focus on QoS information modeling and transformation. QoS information models and meta-models are used during different QoS activities for mapping requirements to system constraints, for exchanging QoS information, for checking compatibility between QoS information and more generally for making QoS decisions. We also investigate which model transformation operators have to be implemented in order to support some QoS activities such as QoS mapping

Un modèle uniforme pour la modélisation et la métamodélisation d'une mémoire d'entreprise

Thèse diffusée initialement dans le cadre d'un projet pilote des Presses de l'Université de Montréal/Centre d'édition numérique UdeM (1997-2008) avec l'autorisation de l'auteur

Développement MLO: Metadata for learning opportunities

Tiré de l'écran-titre (visionné le 27 juin 2017).Ce rapport d'études présente les résultats des travaux de développement d’outils d’extraction et d’exploitation des métadonnées sur les opportunités d’apprendre. Les résultats de leur utilisation témoignent du fort potentiel de la spécification MLO-AD

Preuve de concept pour le profil OÉAF : consultation des cours dans le cadre des programmes de doctorat en administration (HEC, UQAM, McGill et Concordia)

Tiré de l'écran-titre (visionné le 27 juin 2017).L'actuel document présente les travaux réalisés sur un outil d’extraction et de conversion des données à partir d’une base de données institutionnelle. Ce projet se veut une preuve de concept pour le profil OÉAF

Process modeling for new media artworks

Practices in new media art pose very interesting challenges to the multimedia research community in terms of software tools development, usage of media technologies or documentation and conservation of new meda artworks. In this paper, we present the different stages in the life cycle of new media artworks and we illustrate the use of the canonical processes of media production in this context. This work is a first step towards a process modeling framework for the description and documentation of new media artworks

Model Operations for Quality-Driven Multimedia Delivery

With the recent advances in distributed systems and wireless technology, users can access any information, from anywhere with any device. Multimedia delivery services are currently under development to operate in such environments. In this context, it appears essential to offer and support different levels of service according to users requirements and expectations and to work towards quality-driven delivery (QDD). Implementing QDD mechanisms leads us to consider different issues such as system components interoperability, quality information management, distributed execution of QDD activities and multi-criteria optimization. In this paper, we focus on quality information management to support QDD. We propose a model management approach to the problem and we introduce metamodel and model operations for that purpose. We use conceptual graphs formalism to develop our QDD metamodel and we show how the conceptual graph derivation mechanism can be applied to implement some fundamental model operations

Référentiels de compétences

Tiré de l'écran-titre (visionné le 27 juin 2017).L’objectif de ce document est d’examiner la question des référentiels de compétences à la lumière de travaux sur la modélisation de structures pédagogiques et sur l’émergence de normes et de standards internationaux

Référentiels de compétences : des besoins exprimés à la mise en oeuvre

Tiré de l'écran-titre (visionné le 27 juin 2017)

LEAP2A et l'interopérabilité des portfolios numériques : un cas d'utilisation

Tiré de l'écran-titre (visionné le 27 juin 2017)