Includes supplementary material: sn.pub/extras

Visualization and User Control of Recommender Systems.- Crowdsourcing and Knowledge Co-creation in Virtual Museums.- Using real-time gaze sharing methods to enhance collaboration.- Evaluating Anchored Discussion to Foster Creativity in Online Collaboration.-Measuring the effort demanded by CSCL design processes supporting a consistent artifact flow.-Supporting Collaborative Decision Making in Geo-collaboration Scenarios.- Analysis of Question and Answering Behavior in Question Routing Services.- An Integrative Tool Chain for Collaborative Virtual Museums in Immersive Virtual Environments.- A Behaviour Awareness Mechanism to Support Collaborative Learning.- Exploiting the use of wikis to support collaborative writing: a case study of an undergraduate Computer Science class.- Where to begin? Using Network Analytics for the Recommendation of Scientific Papers.- Every answer has a question: exploring communication and knowledge exchange in MOOCs through learning analytics.- Dynamic Credibility Threshold Assignment in Trust and Reputation Mechanisms Using PID Controller.- XCuteKIP: Support for Knowledge Intensive Process Activities.- BESIDE: Immersive System to Enhance Learning within a Museum.- Secure Collaboration in Public Cloud Storages.- Sketchpad: A learning tool supporting creativity in collaborative learning activities.- A Subscription Overlay Network for Large-Scale and Efficient File.-Parallel Downloading.- Synchronizing Dining Progress in Video-Mediated Time-shifted Table Talk Induces More Engagement.- Contrasting People's Attitudes towards Self-disclosure in Online Social Networks and Face-to-face Settings.