detection and modification of the risk factors of stroke may be the most effective strategy for preventing its often irreversible consequences. a longitudinal prospective study was implemented to evaluate the effect of several risk factors on the course of cerebrovascular disease. the study groups were composed of 3s8 normal volunteers, and 308 patients with transient ischemic attacks. the two ...

Mixed analog and digital mode simulators have been available for accurate transient fault simulation. However , they are not fast enough to simulate a large number of transient faults on a relatively large circuit in a reasonable amount of time. In this paper, we describe a gate-level transient fault simulation environment which has been developed based on realistic fault models. The simulation...

We provide an experimental evidence of transient instabilities (TIs) in a terahertz (THz) quantum cascade laser (QCL) under optical feedback, contrast to the widely accepted claim that THz QCLs are ultrastable against feedback. The TIs appear as periodic oscillations emitted power or terminal voltage with increasing oscillation frequency feedback increases. absence relaxation and low linewidth ...

A mathematical model is formulated, and a numerical study of magneto-plasma compressor (MPC) discharges in gases for wide range changes the main electrical parameters characteristics surrounding gas environment carried out. The performed calculations showed, depending on role one or another heating mode (Ohmic, transient, plasma dynamic), three different types quasi-stationary spatial distribut...