to Adaptive Collaboration Scripting.- Combining Streaming Media and Collaborative Elements to Support Lifelong Learning.- 'MULTIPLES': A Challenging Learning Framework for the Generation of Multiple Perspectives within e-Collaboration Settings.- E-Learning at Work in the Knowledge Virtual Enterprise.- Communities of Practice Environment (CoPE): Democratic CSCW for Group Production and E-Learning.- Critical Thinking as a Framework for Structuring Synchronous and Asynchronous Communication within Learning Design-Based E-Learning Systems.- Constructing a Multi-agent System for Discovering the Meaning over Natural-Language Collaborative Conversations.- CoLPE: Support for Communities of Learning Practice by the Effective Embedding of Information and Knowledge about Group Activity.- Detecting and Solving Negative Situations in Real CSCL Experiences with a Role-Based Interaction Analysis Approach.- DyMRA: A Decentralized Resource Allocation Framework for Collaborative Learning Environments.- A Semantic Description Model for the Development and Evaluation of Grid-Based, Innovative, Ubiquous and Pervasive Collaborative Learning Scenarios.