Concurrency-Based and User-Centric Collaboration for Distributed Compound Document Authoring

in Proceedings of the 2017 IEEE 21st International Conference on Computer Supported Cooperative Work in Design (CSCWD) (2017)

The collaborative authoring of complex document structures by geographically distributed users is no longer a special case in today's global economy or people's personal lives. However, integrating single ... [more ▼]

The collaborative authoring of complex document structures by geographically distributed users is no longer a special case in today's global economy or people's personal lives. However, integrating single-user application responsiveness and feature sets with the additional demands and expectations presented towards distributed multi-user environments remains a challenge. Current solutions approaching this challenge almost exclusively rely on traditional, file-based data structures. This often introduces arbitrary workflow restrictions to the user and reduces the potential to benefit from an otherwise inherently concurrent system. Our distributed compound document authoring environment aims at addressing these challenges while providing system-level collaboration support to the user. We attain this through the close integration of a fine-grained data structure with a highly scalable, priority-based concurrency model for command distribution and application. This paper discusses our enhanced data representation and concurrency model together with the evaluation of their prototypical implementation. [less ▲]

Yactul: An Extensible Game-Based Student Response Framework for Active Learning

in Ponencias del XVIII Encuentro Internacional Virtual Educa, Colombia 2017 (2017)

Student response systems as an active learning strategy have shown to be useful in different study domains. With the advent of gamification, these environments have become very popular to improve student ... [more ▼]

Student response systems as an active learning strategy have shown to be useful in different study domains. With the advent of gamification, these environments have become very popular to improve student engagement. However, existing solutions only provide a static set of activity types and limit their use to classrooms. In this paper, we present Yactul, an extensible game-based student response framework for active learning. Our ecosystem fosters continuous learning both in the collaborative setting of the classroom and the private study environment of the student. Our modular architecture enables a seamless integration of activities from a broad and extensible set. In addition, a mobile app for offline learning extends the experience outside the classroom and allows to replay quizzes anywhere and anytime, track the progress of an individual learner and suggest activities on topics that require more studying. [less ▲]

Demonstrating the CollaTrEx Framework for Collaborative Context-Aware Mobile Training and Exploration

in Proceedings of the International Conference on Educational Technologies (ICEduTech) (2016)

Socially-Sensitive Systems Design – Working Group on "Understanding Social Concepts in Self-Organising Systems"

in Dagstuhl Reports (2016), 5(11), 142-147

Socio-Inspired Design Approaches for Self-Adaptive and Self-Organizing Collaborative Systems

in Proceedings of the 9th IEEE International Conference on Self-Adaptive and Self-Organizing Systems (SASO) (2015)

Structural Balance and Optimized Connectivity in Peer-to-Peer Massively Multiuser Virtual Environments

in Proceedings of the 6th ACM Multimedia Systems Conference (MMSys) (2015)

Reusable Functional Modules for the Support of Active Learning

in Proceedings of the World Conference on Educational Media, Hypermedia and Telecommunications (EdMedia) (2014)

Context-based Authoring and Management of Documents

in Proceedings of the World Conference on E-Learning (E-Learn) (2013)

Snippets and Component-Based Authoring Tools for Reusing and Connecting Documents

in Journal of Digital Information Management (2012), 10(6), 399-409

The Snippet System - Reusing and Connecting Documents

in Proceedings of the 7th International Conference on Digital Information Management (ICDIM) (2012)