This is a report on a NICOP funded project to investigate the feasibility and benefits of computing shadowing trajectories with the Naval Operational Global Atmospheric Prediction System (NOGAPS). Previous results had established that an algorithm to compute shadowing trajectories was successful for a simple quasi-geostrophic (T21L3) model, without using any adjoint information. The first aim w...

The effect of gluon shadowing on charm quark production in large impact parameter ultrarelativistic heavy ion collisions is investigated. Charm production cross sections are calculated for a range of non-central impact parameters which can be accurately inferred from the global transverse energy distribution. We show that charm production is a good probe of the local parton density which determ...

We define continuous and inverse shadowing for flows and prove some properties. In particular, we will prove that an expansive flow without fixed points on a compact metric space which is a shadowing is also a continuous shadowing and hence an inverse shadowing (on a compact manifold without boundary).

Object shadowing is an established programming concept that is supported by languages such as LPC. Thus far, shadowing in LPC appears to have been driven mainly by pragmatics rather than having followed any particular formal evolutionary path. In this paper, we describe the concept of object shadowing and suggest a number of suitable application areas that would benefit from further development...

Acoustical shadowing occurring at the edges of curved objects is one of the most frequently observed artifacts in ultrasound imaging. This artifact has been generally ascribed to refraction and reflection effects at the boundary between the curved object and the surrounding tissues. However, the shadowing that would be produced by pure refraction and reflection may not correspond in all circums...

We compare three receivers for coded narrowband transmission over a channel with fading, shadowing , and co-channel interference. The baseline receiver includes conventional diversity reception with maximal-ratio combining. A multiuser approach allows us to derive a maximum-likelihood (ML) multiuser diversity receiver and its reduced-complexity suboptimal version. Finally, a decor-relating dive...

Gluon shadowing is the main source of expected nuclear effects for production of heavy flavored hadrons. We develop a light-cone dipole approach aiming at simplifying the calculations of nuclear effects, as well as the cross section which does not need nextto-leading and higher order corrections. A substantial process dependence of gluon shadowing is found at the scale of charm mass manifesting...