Mikael Nilsson

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Metadata for the World Wide Web is important, but metadata for Peer-to-Peer (P2P) networks is absolutely crucial. In this paper we discuss the open source project Edutella which builds upon metadata standards defined for the WWW and aims to provide an RDF-based metadata infrastructure for P2P applications, building on the recently announced JXTA Framework.(More)
ISSN 1436-4522. © International Forum of Educational Technology & Society (IFETS). The authors and the forum jointly retain the copyright of the articles. Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial(More)
Today educational technologies are reaching a state that allows interoperability and reuse of learning resources. The underlying techniques rely heavily on the standards movement for metadata representation. On top of this, monolithic reference platforms are being developed with the aim to ease application development. However, we do not think this approach(More)
Meta-data is the fundamental building block of the Semantic Web. However, the meta-data concept is too loosely defined to provide architectural guidelines for its use. This paper analyzes important uses of meta-data in the e-learning domain, from a pedagogical and philosophical point of view, and abstracts from them a set of fundamental architectural(More)
The use of vascular intersection aberration as one of the signs when monitoring and diagnosing diabetic retinopathy from retina fundus images (FIs) has been widely reported in the literature. In this paper, a new hybrid approach called the combined cross-point number (CCN) method able to detect the vascular bifurcation and intersection points in FIs is(More)
We have designed the basics of an architecture for working with distributed mind-maps containing connected concepts. This involves designing a static representation of concepts and mind-maps for storing and transmitting designing an application programming interface (API) for working with concepts and mind-maps designing a way to browse an interconnected(More)
It is generally hard to predict the exact duration of an action. Uncertainty in durations is often modeled in temporal planning by the use of upper bounds on durations, with the assumption that if an action happens to be executed more quickly, the plan will still succeed. However, this assumption is often false: If we finish cooking too early, the dinner(More)
The exact duration of an action generally cannot be predicted in advance. Temporal planning therefore tends to use upper bounds on durations, with the explicit or implicit assumption that if an action happens to be executed more quickly, the plan will still succeed. However, this assumption is often false: If we finish cooking too early, the dinner will be(More)
Effective speech communication using microphone Array is getting significant research in speech acquisition methods such as speaker localization and tracking. Localization techniques play an important role for automatic camera in videoconference system and for other human machine interfaces. To locate the accurate Direction Of Arrival (DOA) from the source,(More)