This thesis deals with the efficient simulation of Computational Fluid Dynamics (CFD) into a realtime 3D graphics engine by discussing the development of the C’Nedra virtual reality game engine project carried out at Ecole Centrale Paris. The thesis tries to somewhat bridge the gap of theoretical papers of CFD algorithms by implementing Jos Stam’s stable method for fluid effects in 3D with the ...

ion in its use of colour and form. Yet it is also significantly different on at least three scores: 1. It is interactive, 2. It is dynamic, and 3. The code that drives the imagery is a notational form akin to musical notation. sprite(spriteNum).trails = true pAngle = random(360) startH = random(440)+75 startV = random(280)+75 if random(2) = 1 then pAngleVector = -1 else pAngleVector = 1 end if ...

The experimental validation and the testing of solutions that are designed for heterogeneous environments is challenging. We introduce Wrekavoc as an accurate tool for this purpose: it runs unmodified applications on emulated multisite heterogeneous platforms. Its principal technique consists in downgrading the performance of the platform characteristics in a prescribed way. The platform charac...

Reflectance properties express how objects in a virtual scene interact with light. They control the appearance of the object: whether it looks shiny or not, it has a metallic or plastic appearance. The reflectance model (BRDF) is essential for photorealistic pictures. Measured reflectance provide high realism, at the expense of memory cost. Parametric models are compact, but it is difficult to ...

Increasing attention is being paid in academic, policy, and public arenas to subjective measures of well-being. This promising trend represents a shift towards measuring positive outcomes in psychology and greater realism in the study of economic behaviour. We describe the main measures of subjective well-being (SWB) and provide examples of policy-relevant research findings, including new accou...

RÉSUMÉ. La métrologie est en train de devenir la pierre angulaire de l’ingénierie et de la recherche en réseau, notamment en ce qui concerne l’Internet. En effet, la complexité grandissante de l’Internet entraîne une méconnaissance du trafic et des conditions d’utilisation du réseau. Dans de telles conditions, il devient de plus en plus difficile d’avoir une réelle maîtrise du réseau, de son co...

Reflectance properties express how objects in a virtual scene interact with light; they control the appearance of the object: whether it looks shiny or not, whether it has a metallic or plastic appearance. Having a good reflectance model is essential for the production of photorealistic pictures. Measured reflectance functions provide high realism at the expense of memory cost. Parametric model...