By considering a one-dimensional cross-section through the rough surface, we derive a purely geometrical constraint on the statistical distribution of shadowed facet slopes that should be satissed by any model of surface emissivity that includes the eeect of self-shadowing. Our purpose is not to develop a single shadowing model, but to provide a condition that any valid shadowing model should s...

Starting from an unintegrated gluon distribution which satisfies a 'unified' equation which embodies both BFKL and DGLAP behaviour, we compute the shadowing corrections to the integrated gluon in the small x domain that will be accessible at the LHC. The corrections are calculated via the Korchegov equation, which incorporates the leading ln(1/x) triple-Pomeron vertex, and are approximately res...

A method of deductive learning is developed to control deductive inference Our goal is to im prove problem solving time by experience when that experience monotonically adds knowledge to the knowledge base In particular for deductive reasoning systems where partial results are saved dur ing a derivation and at least some partial results are themselves deduction rules we suggest ways of taking m...

We calculate nuclear shadowing and Q 2 dependence of gluon densities within the framework of the Gribov theory of nuclear shadowing using as input recent HERA data on diffractive dijet and charm production in deep inelastic ep scattering. We explain that in the case of the deuteron and of the light nuclei (A ≤ 12) theoretical uncertainties in the calculations of shadowing are small. For the hea...

Simulations show that signal attenuation factors like fading and shadowing improve the efficiency and speed of route discovery processes in ad hoc wireless networks that rely on the use of slotted ALOHA channel. On the other hand, the capture probability has been shown to be independent of the shadowing. While the detailed modeling of the route discovery packet dissemination in a network is rat...