Dr. Sampson holds a Diploma in Electrical Engineering from Demokritus University of Thrace and a PhD in Multimedia Communications from the university of Essex, UK. He is an Associate Professor at the University of Pireaus, Greece. His main research interests are in the area of Technology Enhanced Learning. Dr. Isaias holds a PhD in information management from the New University of Lisbon. He is a Professor at the Universidade Aberta (Portuguese Open University) in Lisbon, Portugal. His current research interests include Infomration systems, e-Learning, e-Commerce, and all www-related areas. Dr. Ifenthaler is acting Chair of the Department of Educational Science, Mannheim University.his primary research interests include the learning-dependent progression of mental models, complex problem-solving, decision making, situational awareness, anad emotions, he has developed automated and computer-based methodologies for the assessment and analysis of graphical and natural language representations as well as course management software and educational simulation games. Dr. Spector is Professor at the Learning and Performance Support Laboratory, University of Georgia, Athens, GA. His research interests include technology integration in learning and instruction, assessment of learning in complex domains, simulation-based learning environments and instructional design support.

• Ubiquitous and mobile formal and informal learning in the digital age.- Challenges and new perspectives.- Social web technologies for new knowledge representations.- Social web technologies for knowledge retrieval, creation, and sharing in formal and informal educational settings.- Virtual worlds and formal learning.- Virtual worlds and informal learning.- Game-based learning and assessment.- Location-based environments for learning.- Context-aware environments for learning.- Formal and informal learning integration.- Conclusions and future directions.

Dr. Sampson holds a Diploma in Electrical Engineering from Demokritus University of Thrace and a PhD in Multimedia Communications from the university of Essex, UK. He is an Associate Professor at the University of Pireaus, Greece. His main research interests are in the area of Technology Enhanced Learning. Dr. Isaias holds a PhD in information management from the New University of Lisbon. He is a Professor at the Universidade Aberta (Portuguese Open University) in Lisbon, Portugal. His current research interests include Infomration systems, e-Learning, e-Commerce, and all www-related areas. Dr. Ifenthaler is acting Chair of the Department of Educational Science, Mannheim University.his primary research interests include the learning-dependent progression of mental models, complex problem-solving, decision making, situational awareness, anad emotions, he has developed automated and computer-based methodologies for the assessment and analysis of graphical and natural language representations as well as course management software and educational simulation games. Dr. Spector is Professor at the Learning and Performance Support Laboratory, University of Georgia, Athens, GA. His research interests include technology integration in learning and instruction, assessment of learning in complex domains, simulation-based learning environments and instructional design support.

• Ubiquitous and mobile formal and informal learning in the digital age.- Challenges and new perspectives.- Social web technologies for new knowledge representations.- Social web technologies for knowledge retrieval, creation, and sharing in formal and informal educational settings.- Virtual worlds and formal learning.- Virtual worlds and informal learning.- Game-based learning and assessment.- Location-based environments for learning.- Context-aware environments for learning.- Formal and informal learning integration.- Conclusions and future directions.

Dr. Sampson holds a Diploma in Electrical Engineering from Demokritus University of Thrace and a PhD in Multimedia Communications from the university of Essex, UK. He is an Associate Professor at the University of Pireaus, Greece. His main research interests are in the area of Technology Enhanced Learning. Dr. Isaias holds a PhD in information management from the New University of Lisbon. He is a Professor at the Universidade Aberta (Portuguese Open University) in Lisbon, Portugal. His current research interests include Infomration systems, e-Learning, e-Commerce, and all www-related areas. Dr. Ifenthaler is acting Chair of the Department of Educational Science, Mannheim University.his primary research interests include the learning-dependent progression of mental models, complex problem-solving, decision making, situational awareness, anad emotions, he has developed automated and computer-based methodologies for the assessment and analysis of graphical and natural language representations as well as course management software and educational simulation games. Dr. Spector is Professor at the Learning and Performance Support Laboratory, University of Georgia, Athens, GA. His research interests include technology integration in learning and instruction, assessment of learning in complex domains, simulation-based learning environments and instructional design support.

• Ubiquitous and mobile formal and informal learning in the digital age.- Challenges and new perspectives.- Social web technologies for new knowledge representations.- Social web technologies for knowledge retrieval, creation, and sharing in formal and informal educational settings.- Virtual worlds and formal learning.- Virtual worlds and informal learning.- Game-based learning and assessment.- Location-based environments for learning.- Context-aware environments for learning.- Formal and informal learning integration.- Conclusions and future directions.