Der Einsatz von Prefetchingverfahren für verteilte, hypermediale Lernanwendungen ermöglicht es, zeitliche Verzögerungen während der Navigation des Lernenden durch das Hypermedium nachhaltig zu reduzieren. In diesem Papier wird ein Prefetchingansatz dargestellt, mit welchem gezielt die Lerndauer minimiert werden kann. Darauf basierend können die Lerninhalte innerhalb eines performanceorientierte...

The recent rise of Instant Messaging systems as a centerpiece of online communication has brought with it many questions about the role this new medium will play in the communicative sphere. As the medium has evolved, it has grown to subsume many traditional communication technologies, merging their individual capabilities. In this chapter, a cross-section of popular and established technologie...

Current hypertext systems have been widely and effectively used on relatively small data volumes. The potential of database technology is explored for aiding the implementation of hypertext systems holding very large amounts of complex data. Databases meet many requirements of the hypermedium: persistent data management, large volumes, data modelling, multi-level architecture with abstractions ...

This paper presents an integrated view of learning from verbal and pictorial representations. Learning from these representations is considered as a task oriented process of constructing multiple mental representations. Construction of these representations includes information selection and information organisation, parsing of symbol structures, mapping of analog structures as well as model co...

Med udgangspunkt i spørgsmålet om hvordan nødvendige heuristikker for brug af hypermedier pædagogisk praksis udledes, fremlægges denne artikel en formel bestemmelse fænomenet, på basis et (fiktivt) eksempel hypermedium. I tilknytning hertil anføres argumentation for, at almene erkendelsesteoretiske og kognitionsteoretiske overvejelser er udledning heuristikker, der skal være virksomme inden de ...

G lobal collaboration on knowledge work, such as product development, is vital in many industries as competition extends across regional borders. Collaborating in such an environment means working between cross-functional, cross-cultural teams separated by time-zone differences and geographical distance. The Internet infrastructure has made global collaboration possible for large numbers of peo...