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Bonsai: Rapid Bounding Volume Hierarchy Generation using Mini Trees

We present an algorithm, called Bonsai, for rapidly building bounding volume hierarchies for ray tracing. Our method starts by computing midpoints of the triangle bounding boxes and then performs a rough hierarchical top-down split using the midpoints, creating triangle groups with tight bounding boxes. For each triangle group, a mini tree is built using an improved sweep SAH method. Once all mini

Secure RPC in embedded system - Evaluation of some GlobalPlatform implementation alternatives

In secure computing systems, isolation between different components is normally the basis for security. However, ab- solute isolation is seldom desired nor practical. Often for the system to function, a secure communication channel between otherwise isolated components is also needed. In this work, we consider implementation of the secure Remote Procedure Call (RPC) mechanism defined by the Global

Coaching för lärande

Coaching för lärande Hur får vi studenterna att ta ansvar för sitt eget lärande? Hur får vi dem att formulera egna mål och arbeta effektivt för att nå dem? Workshopen behandlar olika coachingtekniker och du får praktiska tips på hur du kan använda coaching i din undervisning eller handledning. Mål för workshopen: Efter workshopen ska deltagarna ha en grundläggande förståelse för hur man kan anvä

Design and implementation of a 1024-point pipeline FFT processor

The design and implementation of a 1024-point pipeline FFT processor is presented. The architecture is based on a new form of FFT, the radix-22 algorithm. By exploiting the spatial regularity of the new algorithm, minimal requirement for both dominant components in VLSI implementation has been achieved: only 4 complex multipliers and 1024 complex-word data memory for the pipelined 1K FFT processor

Behaviour of the extensible elastica solution

The general form of the virtual work expression for the large strain Euler–Bernoulli beam theory is derived using the nominal strain (Biot's) tensor. From the equilibrium equations, derived from the virtual work expression, it turns out that a linear relation between Biot's stress tensor and the (Biot) nominal strain tensor forms the differential equation used to derive the elastica solution. More