1,617 research outputs found
Scintillation observations of satellite signals
Scintillation observations of satellite signal
Prototype ultrasonic instrument for quantitative testing
Ultrasonic instrument has been developed for use in quantitative nondestructive evaluation of material defects such as cracks, voids, inclusions, and unbonds. Instrument is provided with standard pulse source and transducer for each frequency range selected and includes integral aids that allow calibration to prescribed standards
Feasibility of fuel switching in Boston
This report develops a simple physical model that predicts that the
nighttime dispersion of S2 from the largest sources in Boston is different
than the dispersion of S2 from small, low level sources. Diurnal variations in S02 levels measured in Boston over the last seven years are analyzed
in the light of this theory. The comparison between theory and observation
is favorable. A simple, unambiguous, criteria for defining a large source
is developed. The results are used to predict the fraction of the time
large sources could burn high sulfur fuels while still meeting the state
standards for sulfur dioxide
Beyond carrot-and-stick: how values and endogenous motivations affect residential green IS adoption
Dark matter within high surface brightness spiral galaxies
We present results from a detailed dynamical analysis of five high surface
brightness, late type spirals, studied with the aim to quantify the
luminous-to-dark matter ratio inside their optical radii. The galaxies' stellar
light distribution and gas kinematics have been observed and compared to
hydrodynamic gas simulations, which predict the 2D gas dynamics arising in
response to empirical gravitational potentials, which are combinations of
differing stellar disk and dark halo contributions. The gravitational potential
of the stellar disk was derived from near-infrared photometry, color-corrected
to constant (M/L); the dark halo was modelled by an isothermal sphere with a
core. Hydrodynamic gas simulations were performed for each galaxy for a
sequence of five different mass fractions of the stellar disk and for a wide
range of spiral pattern speeds. These two parameters mainly determine the
modelled gas distribution and kinematics. The agreement between the
non-axisymmetric part of the simulated and observed gas kinematics permitted us
to conclude that the galaxies with the highest rotation velocities tend to
possess near-maximal stellar disks. In less massive galaxies, with v_max<200
km/s, the mass of the dark halo at least equals the stellar mass within 2-3
R_disk. The simulated gas morphology provides a powerful tool to determine the
dominant spiral pattern speed. The corotation radius for all galaxies was found
to be constant at R_corotation ~ 3 R_disk and encloses the strong part of the
stellar spiral in all cases.Comment: 28 pages, 7 figures; to appear in the Astrophysical Journal, Vol.
586, March 200
Intake Levels of Fish in the UK Paediatric Population
The United Kingdom (UK) is an island and its culture, including diet, is heavily influenced by the maritime resources. Dietary guidance in the UK recommends intake of fish, which provides important nutrients, such as long-chain omega-3 polyunsaturated fatty acids (n-3 PUFA). This study was designed to describe the fish intake habits of UK children using a nationally representative sample. Dietary and socio-demographic data of children 2â18 (N = 2096) in the National Diet and Nutrition Survey Rolling Program (NDNS) Years 1â4 (2008â2012) were extracted. Average nutrient and food intakes were estimated. Logistic regression models were used to predict the meeting of fish intake recommendations, controlling for age, sex, income, total energy intake, and survey year. All analyses were conducted using survey routines and dietary survey weights. In this nationally representative study, 4.7% of children met the fish and 4.5% the oily fish intake recommendations; only 1.3% of the population met both recommendations. Fish intake levels did not significantly change with childrenâs increasing age. Higher vegetable but lower meat consumption predicted meeting the fish intake recommendations, indicating that children eating fish have better diet quality than non-consumers. Further research is needed to explore how intake behaviours can be changed to improve childrenâs diet quality.N.R.V.J. and P.M. were supported by the Centre for Diet and Activity Research (CEDAR), a UKCRC Public Health Research Centre of Excellence. Funding from the British Heart Foundation, Cancer Research UK, Economic and Social Research Council, Medical Research Council, the National Institute for Health Research, and the Wellcome Trust, under the auspices of the UK Clinical Research Collaboration, is gratefully acknowledged. The funders had no role in the design or conduct of the study or the writing of the manuscript. This research received no specific grant from any funding agency, commercial or not-for-profit sectors
How to build a robust provider improvement partnership program to enhance patient experience â A case study
Patient experience is emerging as a key differentiating factor in patientsâ choice of healthcare system. Many healthcare organizations are attempting to improve their patient experience by data-driven, patient-centered initiatives. This involves engaging all staff along all the contact points of a patientâs journey in healthcare. Perhaps, the physicians or care providers are most important link in this chain but also the most challenging to engage in improvement efforts. Most healthcare organizations have some training or workshops to educate providers on communication skills and other tools to enhance patient experience. However, there seems to a paucity of a standardized approach or a roadmap to put together a robust physician or care provider coaching or improvement partnership program with patient experience (PX) staff. There seems to be several gaps in this process. The current article attempts to develop broad guidelines and suggest a roadmap to address these gaps. The article also suggests general templates for PX staff to use in conducting these improvement work with providers and suggestions for developing a standard physician observation or shadowing template for consistency. The article has woven several commonly used tools like motivational interviewing, change management (ADKAR model), and several communication tools to suggest a detailed blue print for provider patient experience improvement partnership
- âŠ