Nuclear shadowing corrections are dominated by soft interaction and grow as function of 1/x more slowly than the single scattering term, which has an essential contribution from hard interaction. Therefore we predict vanishing nuclear shadowing at very low x provided that Q is high and fixed. At the same time, at medium and low Q, nuclear shadowing grows with 1/x as is well known for soft hadro...

This study reports a shadowing experiment, in which one has to repeat a speech stimulus as fast as possible. We tested claims about a direct link between perception and production based on speech gestures, and obtained two types of counterevidence. First, shadowing is not slowed down by a gestural mismatch between stimulus and response. Second, phonetic detail is more likely to be imitated in a...

We study the effect of spatially homogeneous and inhomogeneous shadowing on J/psi production in deuterium-nucleus collisions. We discuss how the shadowing and its spatial dependence can be measured by comparing central and peripheral dA collisions. These event classes may be selected by using gray protons from heavy ion breakup and events where the proton or neutron in the deuterium does not in...

Propagation inside buildings suffer from large shadowing and high multipath effects. This is a serious problem for Wireless Local Area Network (WLAN) systems. OFDM has a high multipath tolerance and this paper shows how this can be used to overcome the problems due to shadowing. OFDM allows a base station to transmit and receive the same signal at the same frequency from multiple locations, at ...

We reexamine the predictions of a two-phase model of shadowing in nuclear deep-inelastic scattering in light of new NMC data on the x, A and Q 2 dependence of the ratios of structure functions. The model, which combines vector meson dominance at low Q 2 with diffractive Pomeron exchange for large Q 2 , agrees with the observed small, but non-zero, slopes in log Q 2 , which indicate the importan...

We calculate shadowing using new data on the gluon density of the Pomeron recently measured with high precision at HERA. The calculations are made in a Glauber-Gribov framework and Pomeron tree-diagrams are summed up within a unitarity-conserving procedure. The total cross section of γA interaction is then found in a parameter-free description, employing gluon diffractive and inclusive distribu...

We explore how nuclear modifications to the nucleon parton distributions affect production of high-p T hadrons in heavy ion collisions. We perform a leading order calculation of the high-p T charged pion, kaon and proton spectra using standard fragmentation functions and shadowing parameterizations. We also consider alternate models of shadowing. Near midrapidity, shadowing is a small effect an...

A method of deductive learning is proposed to con trol deductive inference Our goal is to improve prob lem solving time by experience when that experience monotonically adds knowledge to the knowledge base Accumulating and exploiting experience are done by the schemes of knowledge migration and knowledge shadowing Knowledge migration generates speci c migrated rules from general migrating rules...