We propose and analyze a new shadowing field model meant to capture spatial correlations. The interference field associated with this new model is compared to that of the widely used independent shadowing model. Independent shadowing over links is adopted because of the resulting closed forms for performance metrics, and in spite of the well-known fact that the shadowing fields of networks are ...

Disk shadowing is a technique for maintaining a set of two or more identical disk images on separate disk devices. Its primary purpose is to enhance reliability and availability of secondary storage by providing multiple paths to redundant data. However, shadowing can also boost UO performance. In this paper, we contend that intelligent device scheduling of shadowed disks increases the I/O rate...

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...

Calculations of water production rates and temperatures for rotating irregularly shaped bodies with and without topography are presented. These calculations are compared with the case of a spherical nucleus. For any combination of orbital parameters, rotation axis orientation, spin period, and physical properties of the nucleus (geometric albedo, emissivity, and thermodynamical properties) the ...

We present a study of radiative transfer in dusty, clumpy star-forming regions. A series of self-consistent, three-dimensional, continuum radiative transfer models are constructed for a grid of models parameterized by central luminosity, filling factor, clump radius, and face-averaged optical depth. The temperature distribution within the clouds is studied as a function of this parameterization...

Shadowing is a data collection method that involves following a person, as they carry out those everyday activities relevant to a research study. This article explores the use of shadowing in a formative evaluation of a professional development school (PDS). Specifically, this article discusses how shadowing was used to understand the role of a professor-in-residence (PIR) working with a PDS, a...

This paper investigates satellite-MIMO, space-time coded for diversity gain. Whereas a dual satellite to single antenna terminal link provides shadowing and some multipath diversity gain, a dual antenna terminal provides additional multipath diversity gain. This gain is demonstrated by simulating high resolution time series channel data for urban and highway environments, for SISO, MISO and MIM...

We calculate the shadowing effect in nuclear photoabsorption at low photon energies (1-3 GeV) within a multiple scattering approach. We avoid some of the high energy approximations that are usually made in simple Glauber theory like the narrow width and the eikonal approximation. We find that the main contribution to nuclear shadowing at low energies stems from ρ0 mesons with masses well below ...

In this work, we present an on-board solution for train position tracking that can be used in cases of GPS failures and that does not suffer from the error accumulation problem of Dead Reckoning (DR). It is based on Received Signal Strength (RSS) measured in radio communication systems by several mobile stations having antennas placed on top of different carriages of the train. As the RSS is af...

We discuss shadowing corrections to the structure function F2 in neutrino deep-inelastic scattering on heavy nuclear targets. In particular, we examine the role played by shadowing in the comparison of the structure functions F2 measured in neutrino and muon deep inelastic scattering. The importance of shadowing corrections in the determination of the strange quark distributions