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Peter Baer Galvin is the Chief Technologist for Corporate Technologies, a premier systems integrator and VAR (www.cptech.com). Before that, Peter was the systems manager for Brown University’s Computer Science Department. He has written articles and columns for many publications and is coauthor of the Operating Systems Concepts and Applied Operating Systems Concepts textbooks. As a consultant a...
BACKGROUND Ultraviolet radiation (UVR) exposure and a history of sunburn are important risk factors for skin cancer. Sunburn is more common among men, younger age groups, and people in higher income households. Sun protection measures also vary by sex, age, and socioeconomic characteristics. Associations between ambient UVR and sunburn and sun safety measures have not been quantified. DATA AN...
Computer graphics, and in particular high-fidelity rendering, make it possible to recreate cultural heritage on a computer, including a precise lighting simulation. Achieving maximum accuracy is of the highest importance when investigating how a site might have appeared in the past. Failure to use such high fidelity means there is a very real danger of misrepresenting the past. Although we can ...
Résumé. En apprentissage automatique, la présence d’un grand nombre de variables explicatives conduit à une plus grande complexité des algorithmes et à une forte dégradation des performances des modèles de prédiction. Pour cela, une sélection d’un sous-ensemble optimal discriminant de ces variables s’avère nécessaire. Dans cet article, une approche topologique est proposée pour la sélection de ...
Energy-efficient query dissemination plays an important role for the lifetime of sensor networks. In this work, we consider probabilistic flooding for query dissemination and develop an analytical framework which enables the base station to predict the energy consumed and the nodes reached according to the rebroadcast probability. Furthermore, we devise a topology discovery protocol that collec...
RÉSUMÉ. A l’heure actuelle un besoin d’interactivité renaissant se manifeste chez les consommateurs. Il traduit des attentes fortes en termes de proximité relationnelle, de convivialité et d’identification mutuelle. Cette interactivité numérique modifie le modèle de représentation du monde et pose le problème du cadre d’interprétation de cette information. Les entreprises, notamment les marques...
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