Reaction times and heart rates of 10 subjects walking and running on a motor-driven treadmill were recorded. The exercise consisted of four 3-min stages: Stage 1, 2.5 mph at 12% grade; Stage 2, 3.4 ...mpg at 14% grade; Stage 3, 4.2 mph at 16% grade; Stage 4 5.0 mph at 18% grade. Subjects were given three separate tests at 1-week intervals. There was an increase in reaction time with increased exercise, but this effect diminished significantly over days. Also, when heart rate was 80% of maximum during the post-test, reaction time was not significantly different from the pre-test. Optimum reaction time was obtained at approximately 40% of maximum heart rate.
The Under Secretary for Health asked the Health Services Research and Development (HSR&D) service to identify the managed care principles that would enable The Department of Veterans Affairs (VA) to ...most improve its efficiency and effectiveness while retaining its unique mission. In response to this request, HSR&D's Management Decision & Research Center (MDRC) prepared this article. This article represents the initial work done by the MDRC to determine the extent to which readily available published evidence on implementing managed care principles meets the Under Secretary's information needs and to outline potential areas for further work. It provides an overview and synthesis of existing literature. The document was prepared by the MDRC Technology Assessment Program, which took responsibility because of its expertise in systematic reviews and syntheses of the literature, with contributions from the MDRC's programs in information dissemination and management research.
This thesis reports upon synchrotron based luminescence studies of wide band gap semi-conductors and organic thin films. The optical and structural electronic properties of cubic and hexagonal boron ...nitride have been studied using X-ray Excited Optical Luminescence (XEOL) and Optically Detected X-ray Absorption Spectroscopy (OD-XAS). UV/visible emission was identified in both h-BN and c-BN with additional exciton related deep UV emission for the former. UV excited luminescence measurements were used to determine the band gap energies of h-BN and c-BN, these were found to be 5.96eV ± 0.04eV and 6.36eV ± 0.03eV respectively. Spatially resolved XEOL and OD-XAS was used to investigate c-BN microcrystals revealing lateral differences in luminescence and local structure. Synchrotron/laser pump probe spectroscopy was applied to investigate defect states in h-BN and c-BN. Subsequent correlation to the XEOL emission was made proving these defects states to be responsible for the lowest energy emission bands in both materials. Angular resolved NEXAFS, photo-luminescence (PL) and OD-XAS was used to characterise spin coated thin organic films of poly(phenylamine). The material was shown to exhibit preferred orientation within the film, but spatially resolved imaging OD-XAS revealed lateral variation in the molecular orientation. Electrospray deposition was developed for the growth of thin organic semiconducting films in ultra high vacuum. PL and OD-XAS studies were carried out on pure and mixed films of tetra sulfonated copper phthalocyanine (tsCuPc) and poly(ethyleneoxide) (PEO). Only the mixed complexes displayed infrared emission resulting from disstacking of the tsCuPc by the PEO within the film.
Phys. Rev. D 93, 054502 (2016) We have performed fits of the pseudoscalar masses and decay constants, from a
variety of RBC-UKQCD domain wall fermion ensembles, to $SU(2)$ partially
quenched chiral ...perturbation theory at next-to leading order (NLO) and
next-to-next-to leading order (NNLO). We report values for 9 NLO and 8 linearly
independent combinations of NNLO partially quenched low energy constants, which
we compare to other lattice and phenomenological determinations. We discuss the
size of successive terms in the chiral expansion and use our large set of low
energy constants to make predictions for mass splittings due to QCD isospin
breaking effects and the S-wave $\pi \pi$ scattering lengths. We conclude that,
for the range of pseudoscalar masses explored in this work, $115~\mathrm{MeV}
\lesssim m_{\rm PS} \lesssim 430~\mathrm{MeV}$, the NNLO $SU(2)$ expansion is
quite robust and can fit lattice data with percent-scale accuracy.
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