How reliable is Zeeman Doppler imaging without simultaneous temperature reconstruction?

How Bad is Reliable Multicast without Local Recovery?

We examine the impact of the loss recovery mechanism on the performance of a reliable multicast protocol. Approaches to reliable multicast can be divided into two major classes: sourcebased recovery, and distributed recovery. For both classes we consider the state of the art: For source-based recovery, a type 2 hybrid ARQ scheme with parity retransmission. For distributed recovery, a scheme wit...

How is Reconstruction Constrained?

Zeeman-Doppler imaging of active stars V. Sensitivity of maximum entropy magnetic maps to field orientation

In 1989, Semel proposed a new technique (dubbed Zeeman-Doppler imaging or ZDI) for measuring and mapping magnetic fields at the surface of cool active stars from sets of rotationally modulated circularly polarised (Stokes V ) profiles of spectral lines. Two years later, an automatic tool (based on maximum entropy image reconstruction techniques) was developed and checked on a few test cases (Br...

I-44: Color Doppler Imaging in Impotence

Sexual impotent is very common entity and define as inability to induce or maintaining penile erection during sexual intercourse. Studies reveals about 10% of men aged 40-70 years have complete, 17% have mild and 25% have moderate amount of erectile dysfunction. The sexual impotence has different etiology including psychogenic, neurogenic, arteriogenic and venogenic causes. Current studies reve...

How reliable is an undetectable viral load?

OBJECTIVES An article by the Swiss AIDS Commission states that patients with stably suppressed viraemia [i.e. several successive HIV-1 RNA plasma concentrations (viral loads, VL) below the limits of detection during 6 months or more of highly active antiretroviral therapy (HAART)] are unlikely to be infectious. Questions then arise: how reliable is the undetectability of the VL, given the histo...