Zinayida Petrushyna

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In the emerging discipline of web science there will be ag rowing need for managed data sets for research purposes. In the moment, data sets are mainly managed on file systems in arbitrary formats. This situation leads to al ot of media breaks and double work in the scientific workflows. We argue for the concept of a Web2.0 Mediabases, adata set of managed(More)
—When Internet users search for information, surf on websites or discuss with others, their actions are driven by certain goals. Extraction of users' goals can enable higher effectiveness and accuracy of web services. Supporting users in based on their goals can be highly beneficial, especially supporting of learners in the preparation for an exam as a(More)
Competence management in collaborative networks depends on the identification of gaps between the actual performance and the desired behavior. Therefore, collaborative networks need means to express their goals and intentions as well as to measure this against their own performance. In this paper, we present the i*-based modeling framework for(More)
We examine digital social media ecosystems such as blogs and mailing lists from the perspective of communities of practice. We observe behaviors of agents and specify prevalent patterns of collaborations in digital media ecosystem.We describe several techniques important in patterns specification such as social network analysis and content analysis. The(More)
Advances in mobile communication technologies lead to a coalescence of location-based, multimedia services for user communities. However, easy development and maintenance of device-independent mobile services are still challenging. We have developed a service-oriented framework for mobile multimedia processing based on international standards like MPEG-7.(More)
This paper describes an experiment investigating interactions in a big forum in order to support students in learning English. Groups of collaborating users form communities that generate a lot of data that can be analyzed. We distinguish different phases of the self-regulated learning process and aim to identify them in learners' activities. Then we(More)
Personal learning environments (PLEs) comprise a new kind of learning technology which aims at putting learners into centre stage, i.e. by empowering them to design and use environments for their learning needs and purposes. Setting a PLE approach into practice, however, is not trivial at all, as the proposed end-users have varying attitudes and experiences(More)