The purpose of this study was to determine the dynamic characteristics of brachial artery dilation in response to step increases in shear stress [flow-mediated dilation (FMD)]. Brachial artery diameter (BAD) and mean blood velocity (MBV) (Doppler ultrasound) were obtained in 15 healthy subjects. Step increases in MBV at two shear stimulus magnitudes were investigated: large (L; maximal MBV atta...

The passage from discrete schemes for surface line defects (steps) to nonlinear macroscopic laws for crystals is studied via formal asymptotics in one space dimension. Our goal is to illustrate by explicit computations the emergence from step motion laws of continuum-scale power series expansions for the slope near the edges of large, flat surface regions (facets). We consider surface diffusion...

GPS multipath has long been considered a major error source in GPS applications. In this paper, however, an attempt is made to use multipath as a signal. The proposed application of using GPS multipath to monitor the slope stability involves two steps. The first step is to extract multipath and to detect its change based on an adaptive filter using the leastmean-square algorithm. In the second ...

This study compared the validity of progress monitoring slope of nonsense word fluency (NWF) and word identification fluency (WIF) with early first-grade readers. Students (N = 80) considered to be at risk for reading difficulty were monitored with NWF and WIF on a 1-2 week basis across 11 weeks. Reading skills at the end of first grade were assessed using measures of passage reading fluency, r...

Left ventricular end-systolic pressure-wall thickness and pressure-segment length relations have been used to assess regional myocardial contractility. The purpose of these studies was to determine whether the method of afterload alteration, coronary perfusion pressure, and the definition of end systole affected regional end-systolic relations. In paced open-chest pig hearts (n = 10), left vent...