Beatriz Barros

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Computer mediated collaborative learning allows the recording of a large amount of data about the interaction processes and the task performance of a group of students. This empirical data is a very rich source to mine for a variety of purposes. Some purposes are of practical nature like, for instance, the improvement of peer awareness on the ongoing work.(More)
The objective of the research presented in this article is to find representational mechanisms for relating and integrating the collaborative learning elements present in real practical environments, create an integrated ontology that considers and relates these elements, and make use of it to define new collaborative learning scenarios. It is therefore(More)
Communication through artefacts, in the sense of objects (co-)constructed by learners, is a well known mechanism in synchronous shared workspace environments. In this article, we explore the potential of extending this principle to heterogeneous, anonymous and asynchronous learner communities by drawing on existing work, e.g. in the areas of " social(More)
Formative evaluation and iterative prototyping seem an interesting approach for building collaborative learning systems. Our approach to create our software system consisted on iterating successive stages of analysis, specification, implementation and evaluation. At the end, the process turned out to be a five-pass cycle, carried out in two years, with a(More)
In this paper the underlying knowledge model and architecture of I-PETER (Intelligent Personalised English Tutoring EnviRonment) are presented. This system has been designed for the on-line distance learning of Eng-lish where too many students restrict the teacher's possibilities to provide indi-vidualised guidance. I-PETER is made up of four domain models(More)
In this paper the 'Active Document system', grounded in the Activity Theory, is presented. This system serves both as a representational framework for the description of learning activities and a harness for the mechanisms necessary to support the creation and management of the corresponding computer-based scenarios. This system is made up of three(More)
This paper introduces EV Meta-Model, a new system for representing musical knowledge for computer-aided composition. It starts with a brief historical discussion on the fields of composition and sound synthesis. Then, the practice of musical composition is presented as a communication process from composers to listeners, where musical messages go through(More)