TAKING RICH CONTEXT AND SITUATION IN ACCOUNT FOR IMPROVING AN ADAPTIVE E-LEARNING SYSTEM Topics: Context Dependent Learning; Distance and E-Learning in a Global Context; e-Learning Platforms, Portals; Intelligent Tutoring Systems; Ontologies and Meta-Data Standards; Web-Based Learning, Wikis and Blogs In Proceedings of the 3rd International Conference on Computer Supported Education - Volume 1: CSEDU, 165-172, 2011 , Noordwijkerhout, Netherlands