Global Navigation Satellite Systems (GNSS) far exceed the navigation accuracies provided by other state of the art sensors for aerospace applications. This can support the development of low cost and high performance navigation and guidance architectures for Unmanned Aircraft Systems (UAS) and, in conjunction with suitable data link technologies, the provision of Automated Dependent Surveillance […]

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Divide the sheet into blocks and plot your baby’s skills. Concerning cognitive development, fill in what you think is going on in baby’s mind. For simplicity, you may wish to combine social and language milestones, as we have done on our chart and throughout. The data was collected by state and local immunization programs in […]

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Ces objets reprsentent une double menace. D’abord, logique et gaulois, celle de leur retour sur Terre, explique Christophe Bonnal, expert du Centre national d’tudes spatiales (Cnes), l’agence spatiale franaise. Pour ne pas l’oublier, il garde dans son bureau une sphre de titane d’un mtre et 50 kg, un rservoir d’hlium d’une fuse Ariane tomb dans […]

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Consider a regressor that is a confounding variable but that is also a victim of unobserved confounding itself. Why does weighting with this troublesome covariate not cause bias that regression causes (collider bias)? In this case, I principally thinking about past exposures and how to handle them in an analysis of dynamic treatment. Marginal structural […]

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The port a pottys were conveniently located and well tended to. Very little litter although like many campsites during a fire ban, ironically, cigarette butts get tossed everywhere but in the fire pit. Aside of that, our only beef was with the very ‘rustic inspired’ showers, which need better lighting and proper drainage (for each […]

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