Steffen Brauer

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eLearning systems have been in use for a decade to manage content and collaboration. Still the major online source for coursework are open media like Wikipedia, while students' collaborative online activities are focused on online social networks (OSNs) and remain unrelated to learning. In this paper, we report on work-in-progress for socializing online(More)
The audience of shared content in Social Media is often hard to determine. To protect users from over-sharing, several services provide a feature for grouping contacts. Communities, interest groups, and circles are common examples. In this work, we investigate the structural properties of the circles in Google+ in comparison to the well-known communities.(More)
Could age be a valid criterion for rationing? In Just health, Norman Daniels argues that under certain circumstances age rationing is prudent, and therefore a morally permissible strategy to tackle the problem of resource scarcity. Crucial to his argument is the distinction between two problem-settings of intergenerational equity: equity among age groups(More)
A continuous trend of the past decade has shifted educational responsibility to individuals, while elaborate Internet technologies have fostered easy and open ways to content and communication in a location- and time-independent manner. Personal Learning Networks (PLNs) have emerged as a new paradigm within the context of network-centric learning. While(More)
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