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...

Research on indoor positioning technologies has recently become a hotspot because of the huge social and economic potential of indoor location-based services (ILBS). Wireless positioning signals have a considerable attenuation in received signal strength (RSS) when transmitting through human bodies, which would cause significant ranging and positioning errors in RSS-based systems. This paper ma...

Nuclear shadowing in polarized DIS on 6 LiD at small x and its effect on the extraction of the deuteron spin structure function g d 1 (x, Q 2) Abstract We consider the effect of nuclear shadowing in polarized deep inelastic scattering (DIS) on 6 LiD at small Bjorken x and its relevance to the extraction of the deuteron spin structure function g d 1 (x, Q 2). Using models, which describe nuclear...

We developed Mixed Reality (MR) content that reconstructs the ancient capital of Asuka-Kyo and applied a fast shading and shadowing method that uses shadowing planes. Subjective evaluation with a head-mounted display showed that viewing this content increased the audience’s knowledge both of Asuka-Kyo and of MR technologies. We also conducted impression evaluation tests with and without shading...

Gluon shadowing which is the main source of nuclear effects for production of heavy flavored hadrons, remains unknown. We develop a light-cone dipole approach aiming at simplifying the calculations of nuclear shadowing for heavy flavor production, as well as the cross section which does not need next-to-leading and higher order corrections. A substantial process dependence of gluon shadowing is...

To find how computed tomography (CT) may be effectively used in individuals with suspected asbestos related lung disease 30 men with a history of exposure to asbestos were studied. All subjects underwent high kilovoltage posteroanterior and left lateral chest radiographs and chest CT. Eighteen were randomly selected asbestos workers referred for routine surveillance. The remaining 12 were patie...

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...