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The electromagnetic environment in a hospital is characterized in order to evaluate the conditions for failsafe operation of critical electronic equipment. Field strengths within the University Hospital Zurich were measured at more than 60 different locations in the frequency range from 9 kHz up to 10 GHz. To account for variations in both, time and location, dasiastationary short termpsila and dasiastationary...
We study the sensitivity, with respect to a time dependent domain of expectations of functionals of a diffusion process stopped at the exit from or normally reflected at the boundary of We establish a differentiability result and give an explicit expression for the gradient that allows the gradient to be computed by Monte Carlo methods. Applications to optimal...
La reprise de l'étude des six derniers mètres de la série crétacée et des vingt premiers mètres de la série paléocène, basée sur un échantillonnage serré (2–5 cm à la limite K/T et 15–60 cm de part et d'autre de cette limite), nous a permis de mieux caractériser la limite K/T dans la coupe d'Ellès et de reconstituer les événements géologiques marquant cette limite. Ainsi la découverte d'une fine couche...
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