Digital Systems for Open Access to Formal and Informal Learning.- I. Open Access to Formal and Informal Learning: Theory and Practice.- The Opem Discover Space Portal: A Socially-Powered and Open Ferderated Infrastructure.- The Evolution of University Open Courses in Transforming Learning: Experiences from Mainland China.- Massive Open Online Courses (MOOCs) and Massive Multiplayer Online Games (MMOGs): Synergies and Lessons to be Learned.- Supporting...