He received his Ph.D. in Computer Science in 2002. Jaime is member of the Decoroso Crespo Laboratory since 1996, where he has participated in several R&D projects in the areas of intelligent tutoring systems, e-learning, virtual environments and intelligent agents. His current research interests are intelligent tutoring systems, virtual environments for training, and user and student modelling using ontologies and data mining. He can be contacted at: jramirez@fi.upm.es.