STUDY OBJECTIVES To perform a within-subject analysis of the changes in absolute and normalized rates of non-rapid eye movement (NREM) delta power production across daytime naps and baseline sleep, specifically to determine whether these rates change linearly or exponentially. DESIGN Subjects were studied in a 2-day protocol after screening for sleep disorders. The first night was a baseline ...

not previously been satisfactory clinical methods for tissue flow measurement. Recent techniques with radio-isotopes which can be used in man are therefore of interest, and this editorial reviews generally the theory underlying their use and their application in the past few years. The great advantage of radio-isotopes is that they may be measured easily in the body using an external detector, ...

The Savage-Hutter (SH) avalanche model is a depth-averaged dynamical model of a fluid-like continuum implementing the following simplifying assumptions: (i) density preserving, (ii) shallowness of the avalanche piles and small topographic curvatures, (iii) Coulomb-type sliding with bed friction angle delta and (iv) Mohr-Coulomb behaviour in the interior with internal angle of friction phi> or =...

A case study of the Eskilstuna River in Sweden is presented. This study is carried out within the project KRIS-GIS, a Swedish initiative of handling crisis situations, including flooding. The purpose is to show how different resolutions in input elevation data affect the resulting inundation maps. Terrain elevation points at the sides of the river were gathered from an airborne laser altimetry ...

The bottom boundary layer (BBL) under an internal solitary wave (ISW) of depression is examined using highly resolved, spectral multidomain penalty-method based, Large Eddy Simulation. The focus is on the three-dimensionalization of the initial shear-instability-driven near-bed vortex wake in the lee of the wave and on the downstream formation of fully developed turbulence. When the ISW propaga...

The objective of this research is to systematically understand how strain-hardening models and phase- temperature-dependent slopes affect the computed residual stresses in single-pass welded joints made widely used structural steel S235. Both experimental methods numerical simulation have been utilized for investigation. results reveal that material plasticity model has a massive effect on pred...