Jonas Schulz

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Although quite a number of RDF triple store benchmarks have already been conducted and published, it appears to be not that easy to find the right storage solution for your particular Semantic Web project. A basic reason is the lack of comprehensive performance tests with real-world data. Confronted with this problem, we setup and ran our own tests with a(More)
The B4 - Brisbane Backyard Bird Box is a situated, social, and gamified web based application with a dedicated recording box aimed to support wider community engagement in environmental conservation. The B4 prototype will enable urban dwellers to record audio of their environment to learn and identify the bird calls they heard in their backyard. We foresee(More)
Photons can carry angular momentum, not only due to their spin, but also due to their spatial structure. This extra twist has been used, for example, to drive circular motion of microscopic particles in optical tweezers as well as to create vortices in quantum gases. Here we excite an atomic transition with a vortex laser beam and demonstrate the transfer(More)
Spin dynamics and active atom interferometry with Bose-Einstein condensates: In this thesis the dynamics caused by spin-changing collisions (SCC) and the realisation of an active non-linear interferometer in a spinor Bose-Einstein condensate of 87 Rb are studied. We show the population growth of initially empty spin states (side modes) by pairwise(More)
Current digital preservation is strongly biased towards data objects: digital files of document-style objects, or encapsulated and largely self-contained objects. To provide authenticity and provenance information, comprehensive metadata models are deployed to document information on an object’s context. Yet, we claim that simply documenting an objects(More)
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