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In this paper, I wish to argue that an explanation is not a logical structure¸ that it cannot be characterised in syntactic terms, but that it is rather an epistemological structure, and, more specifically, a structure organising conceptual content. I will start from a trivial example and systematically look at the effects of making premises more general or more specific or of reshuffling the same
Shadows heighten realism and provide important visual cues about the spatial relationships between objects. But integration of robust shadow shadowing techniques in real-time rendering is not an easy task. In this course on how shadows are incorporated in real-time rendering, attendees learn basic shadowing techniques and more advanced techniques that exploit new features of graphics hardware.The
In this paper, a implementation of an OFDM synchronization algorithm is presented. Both time and frequency offsets are estimated simultaneously, using the cyclic prefix. The algorithm is implemented on a commercial DSP, an FPGA and as an ASIC. It is shown that although the algorithm is too complex to be implemented on a standard DSP, a hardware architecture that is optimized for the algorithm can
Popular Abstract in Swedish De flesta bakterier lever i harmoni med människan, på huden och på olika slemhinnor framför allt i mag-tarmkanalen. Cellerna på dessa ytorna utgör ett effektivt skydd mot sjukdomsalstrande bakterier. Ibland bryts emellertid försvarsbarriären och bakterierna kan få tillgång till delar av kroppen som normalt är sterila. De är försvarade av fagocyter, ätarceller, som omsluStreptococcus pyogenes causes infections only in humans, from trivial tonsillitis to life-threatening conditions. One of its most important virulence factors is the M-like protein family conferring resistance to phagocytosis to the bacterium. The M-like proteins are surface exposed rod-like molecules attached to the cell wall. Each strain of S. pyogenes expresses unique M-like proteins that bind t
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In this thesis, electron transport in quantum and ballistic devices was studied. The devices studied here were quantum wires, planar quantum dots, ballistic rectifiers, artificial functional materials, and three-terminal ballistic junctions. The possible application of such devices in the future nanoelectronics was also investigated. In an electron waveguide, with an abrupt change in the geometry
