The paper describes a new type of calorimeter that can be quickly put into operation for determining absorbed dose at a point in polystyrene. It also describes a unique method of decreasing drifts in electrical signals caused by temperature gradients. Two calibrated thermistors were placed close together between sandwiched polystyrene discs that were immersed in water. The assembly was irradiat...

Introduction In blood oxygenation level dependent (BOLD) functional MRI (fMRI), linear signal drifts are often seen in the time series. These drifts are nuisance parameters that are either regressed or filtered out when performing the functional analysis. The largest sources are believed to be scanner instability such as B0 drift and physiological noise and motion [1]. B0 drift also causes drif...

Even well practiced movements cannot be repeated without variability. This variability is thought to reflect "noise" in movement preparation or execution. However, we show that, for both professional baseball pitchers and macaque monkeys making reaching movements, motor variability can be decomposed into two statistical components, a slowly drifting mean and fast trial-by-trial fluctuations abo...

We have identified over 200 fast plasma drift events (>5 km/s) in the high-latitude ionosphere, as measured by electric field double probe on Dynamics Explorer-2 satellite during its 18 months lifetime from August 1981 to February 1983. Although these drifts can appear at all local time sectors, they are most common dawnside and pre-midnight sector. The generally occur between 64° 82° inv.lat. ...