Ralf Klamma

social network analysis communities of practice community information systems technology enhanced learning role knowledge management rwth aachen university learning analytics multimedia personal learning environment requirements engineering sna learning layers 2013 workshop 2011 learning web science visualization acis community learning analytics informal learning call for papers workflow management organizational memories ectel multimedia semantics mpeg-7 sentiment analysis knowledge discovery e-learning 2012 program business applications information systems widget ectel11 data mining multimedia context virtual campfire web 20 ple web enhanced technology mobile xmpp social software web 2.0 dynamic analysis adaptive systems data-management community knowledge acquisition conference gamification augmented reality layers box web-based learning social requirements engineering serious games tellnet topic mining poster mobile computing lifelong learning non-linear storytelling cross-media analysis cloud computing semudate09 social networks etwinning competences responsive open learning environments storytelling seci semantic uncertainty context-aware steg08 story telling network 2009 rwth lab communities gaming computerscience ant networks disturbance agency 3d model open source hololens workplace learninng devops meta study empirical research web2.0 tagging collaborative video annotation boost role sdk open source software development dashboard web engineering expert identification semantic video annotation trust management hits sponsoring educational technology ec-tel information systems (discipline) xml icwl design business process monitoring summer school flyer mobile learning teacher network paper europen schoolnet developer camp recommender programming competition self-regulated learning research eu telmap deliverable umic recommender system stcsn ieee social network widgets statistics social media analytics sigmod icde pods time series analysis vldb aachen digital library long tail learning user models collaborative filtering viusalization pattern-based analysis graph mediabase metadata organizational learning 2010 doctoral consortium wisma2010 multimedia metadata network patterns semudate09 mobile multimedia annotation information processing collaboration seci knowledge management transcriptivity communti analysis" theory" practice" actornetwork "communities "social environments" "personal teachers chinese language learning icwl09 gamebased poetry i requirements engineering service data management environments personal wiki social rdf sparql systems services virtual campfire analysis wikipedia dynamic