Geocast mechanisms allow a sender to transmit network packets to receivers residing at a certain geographical region. Geocast forms the basis for a number of location-based service...
A student's goals and attitudes while interacting with a tutor are typically unseen and unknowable. However their outward behavior (e.g. problem-solving time, mistakes and hel...
Abstract. Over the last six years the Open Hypermedia Systems Working Group (OHSWG) has been working in a coordinated effort to produce a protocol which will allow components of an...
Although there are high expectations for collaborative discussion and on-line learning, existing systems for on-line discussion and chat facilities are not fully effective in prom...
: Even though knowledge management has been around for more than a decade, so far concrete instruments that can be systematically deployed are still rare. This paper presents an op...
Ronald Maier, Stefan Thalmann, Florian Bayer, Mich...