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OBJECTIVE To examine adolescents' peer crowd affiliation and its linkages with health-risk behaviors, their friends' health-risk behaviors, the presence of close friends in the same peer crowd, and adolescents' social acceptance. METHODS We interviewed 250 high school students and identified six categories: popular, jocks, brains, burnouts,… (More)
In this paper we explain how we built cueTable, a multi-touch interactive tabletop, as a base technology to explore new interaction concepts for cooperative and competitive multi-touch applications. We present the Puh game application. And most of all we report on user feedback to the cueTable and the Puh game.
In ubiquitous environments an increasing number of sensors capture information on users and an increasing number of actuators present information to users. In this paper we present CoDaMine-a novel approach for providing users with system-generated feedback and control in ubiquitous environments giving them the freedom they need while reducing their effort.… (More)
Tangible and embedded computing brings technology integrates digital technology in the physical environment of everyday life. Thereby, families in private households are increasingly researched and supported. In this paper we present the concept and implementation of the FamilyFaces---a contact management tool supporting families when managing their… (More)
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Multi-touch tabletops provide new means for co-located people to work together on a task by directly manipulating objects and tools on a single display in unison. Despite their benefits they also entail new challenges. One major concern is how to help users avoid conflicting actions. Previous work discusses if social protocols are sufficient to regulate… (More)
Abstract—In e-learning platforms the social interaction between students and teachers as well as among students is important for effective and efficient learning. Therefore, e-learning platforms need technological support for online presence and communication. In this paper we present the Presence in Learning Spaces (PILS) infrastructure, which… (More)
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