Two operational rf driving frequencies of 2 and 13.56 MHz are employed in a 14-cm-diameter radio frequency (rf) plasma source under an expanding magnetic field. The changes the radial profiles ion saturation current electron temperature observed magnetically when changing frequency. Peripheral high electrons detected for higher case, which is consistent with previous studies, implying localized...

We have used 4752 days of data collected by the Birmingham SolarOscillations Network (BiSON) to determine very precise oscillation frequencies of acoustic low-degree modes that probe the solar core. We compare the fine (small frequency) spacings and frequency separation ratios formed from these data with those of different solar models. We find that models constructed with low metallicity are i...

2014 We report on magnetic dynamic properties in the Ising spin glass Fe0.35Mg0.65Br2. The ac susceptibility curves have been deduced from direct susceptibility and Faraday rotation measurements over a wide frequency range extending from 100 kHz down to 0.05 Hz. The temperature dependence of the characteristic relaxation time cannot be fitted by either a power or an Arrhenius law over the whole...

Editors’ Note: In reference to “Low-frequency stimulation of STN-DBS reduces aspiration and freezing of gait in patients with PD,” Dr. Sidiropoulos suggests several avenues of further investigation including low-frequency stimulation to treat dysarthria, the effects of different stimulation location and parameters, and the duration of clinical benefit. Authors Xie et al. respond. Drs. Lattanzi ...

The energy consumption issue in distributed computing systems has become quite critical due to environmental concerns. In response to this, many energy-aware scheduling algorithms have been developed primarily by using the dynamic voltage-frequency scaling (DVFS) capability incorporated in recent commodity processors. The majority of these algorithms involve two passes: schedule generation and ...

We present a method for measuring the transmission loss of an optical fiber using simplified correlation-domain reflectometry. By intentionally lowering spatial resolution system, we observe Rayleigh scattered signal first time without need frequency shifter. Using this method, simultaneously measure loss, location, and faulty connections along 10-km-long under test by performing distributed re...