123 Alexandra Ioana Cristea Ig Ibert Bittencourt Fernanda Lima (Eds.) First International Workshop on Social, Semantic, Adaptive and Gamification Techniques and Technologies for Distance Learning, HEFA 2017 Maceió, Brazil, March 20–24, 2017, Revised Selected Papers Higher Education for All From Challenges to Novel Technology-Enhanced Solutions Communications in Computer and Information Science 832