We explore join optimizations in the presence of both timebased constraints (sliding windows) and value-based constraints (punctuations). We present the first join solution named...
Geodesic curves in surfaces are not only minimizers of distance, but they are also the curves of zero geodesic (sideways) curvature. It turns out that this property makes patterns...
Helmut Pottmann, Qixing Huang, Bailin Deng, Alexan...
The paper outlines results of feasibility experiments with new functions for a local version of the digital city, performed under a collective name 'Engineering City Oulu'...
Teaching pupils the ideas behind objects in programming languages can be difficult since these concepts are mostly and not comprehensible at first sight. Etoys as a visual progra...
Michael Haupt, Michael Perscheid, Robert Hirschfel...
The Grid approach provides the ability to access and use distributed resources as part of virtual organizations. The emerging Grid infrastructure gives rise to a class of scientif...
Rashid J. Al-Ali, Gregor von Laszewski, Kaizar Ami...