2,955 research outputs found
Exploring Current Topics and Trends in Anatomy Education: A Scoping Review
Within the field of health professional education, one finds that anatomy often presents students with a great deal of difficulty. The literature in this area is piecemeal and there is limited work available examining the whole of this topic. A scoping review was conducted to determine how students are taught anatomy across multiple disciplines (medicine, dentistry, rehabilitation sciences, and undergraduate education) and to assess for any notable differences between these populations. The results found that scholarship on anatomy instruction varies based on educational context, and medical students are the most frequently targeted student population. It also found that the use of medical imaging and computer aided instruction is increasing while the use of cadaveric dissection has remained constant. Furthermore, the lack of cadaveric dissection in an anatomy curriculum does not necessarily hinder student learning when alternative teaching modalities are implemented
Black holes, parallelizable horizons and half-BPS states for the Einstein-Gauss-Bonnet theory in five dimensions
Exact vacuum solutions with a nontrivial torsion for the
Einstein-Gauss-Bonnet theory in five dimensions are constructed. We consider a
class of static metrics whose spacelike section is a warped product of the real
line with a nontrivial base manifold endowed with a fully antisymmetric
torsion. It is shown requiring solutions of this sort to exist, fixes the
Gauss-Bonnet coupling such that the Lagrangian can be written as a Chern-Simons
form. The metric describes black holes with an arbitrary, but fixed, base
manifold. It is shown that requiring its ground state to possess unbroken
supersymmetries, fixes the base manifold to be locally a parallelized
three-sphere. The ground state turns out to be half-BPS, which could not be
achieved in the absence of torsion in vacuum. The Killing spinors are
explicitly found.Comment: 11 pages, no figures, notation clarified; version accepted for
publication in Physical Review
The Evolution of the Far-UV Luminosity Function and Star Formation Rate Density of the Chandra Deep Field South from z=0.2-1.2 with Swift/UVOT
We use deep Swift UV/Optical Telescope (UVOT) near-ultraviolet (1600A to
4000A) imaging of the Chandra Deep Field South to measure the rest-frame far-UV
(FUV; 1500A) luminosity function (LF) in four redshift bins between z=0.2 and
1.2. Our sample includes 730 galaxies with u < 24.1 mag. We use two methods to
construct and fit the LFs: the traditional V_max method with bootstrap errors
and a maximum likelihood estimator. We observe luminosity evolution such that
M* fades by ~2 magnitudes from z~1 to z~0.3 implying that star formation
activity was substantially higher at z~1 than today. We integrate our LFs to
determine the FUV luminosity densities and star formation rate densities from
z=0.2 to 1.2. We find evolution consistent with an increase proportional to
(1+z)^1.9 out to z~1. Our luminosity densities and star formation rates are
consistent with those found in the literature, but are, on average, a factor of
~2 higher than previous FUV measurements. In addition, we combine our UVOT data
with the MUSYC survey to model the galaxies' ultraviolet-to-infrared spectral
energy distributions and estimate the rest-frame FUV attenuation. We find that
accounting for the attenuation increases the star formation rate densities by
~1 dex across all four redshift bins.Comment: 20 pages, 8 figures, 6 tables; accepted for publication in Ap
A state-level study of opioid use disorder treatment access and neonatal abstinence syndrome
Background Adult opioid use and neonatal abstinence syndrome (NAS) are growing public health problems in the United States (U.S.). Our objective was to determine how opioid use disorder treatment access impacts the relationship between adult opioid use and NAS.
Methods We conducted a cross-sectional state-level ecologic study using 36 states with available Healthcare Cost and Utilization Project State Inpatient Databases in 2014. Opioid use disorder treatment access was determined by the: 1) proportion of people needing but not receiving substance use treatment, 2) density of buprenorphine-waivered physicians, and 3) proportion of individuals in outpatient treatment programs (OTPs). The incidence of NAS was defined as ICD-9 code 779.5 (drug withdrawal syndrome in newborn) from any discharge diagnosis field per 1000 live births in that state.
Results Unmet need for substance use disorder treatment correlated with NAS (r = 0.54, 95% CI: 0.26–0.73). The correlation between adult illicit drug use/dependence and NAS was higher in states with a lower density of buprenorphine-waivered physicians and individuals in OTPs.
Conclusions Measures of opioid use disorder treatment access dampened the correlation between illicit drug use/dependence and NAS. Future studies using community- or individual-level data may be better poised to answer the question of whether or not opioid use disorder treatment access improves NAS relative to adult opioid use
Familiarisation, Reproducibility, Sensitivity and Joint Angle Specificity of Bilateral Isometric Force Exertions during Leg Press
BACKGROUND: Strength assessments are used to monitor physical progression and evaluate the impact of training interventions, which is extremely valuable for both athletic performance and clinical populations. For results to be useful, measurements must be relevant, reliable and show sensitivity to change.
OBJECTIVES: The aim was to establish the practicality of isometric force assessment at two different knee-joint angles; 90° (ISO90) and 120° (ISO120). More specifically, to address the familiarisation effects, reproducibility and sensitivity of measurements associated with each method of assessment, and the discrepancy in force output when altering the angle at the knee joint.
METHODS: Thirty-five strength trained males attended three sessions; familiarisation (T1), test (T2) and retest (T3), separated by 7 days. During each session, ISO90 and ISO120 was assessed using an incline leg press device.
RESULTS: Force output was similar during T1, T2 and T3 for ISO90 and ISO120, separately (p > 0.05). Measurements taken from both assessment methods demonstrated good reproducibility (ICC = 0.96, CV < 5%) and showed sufficient sensitivity to detect changes in performance. Force output was greater during ISO120 (5153 ± 1446 N) versus ISO90 (2660 ± 597 N, p < 0.001) but the magnitude of the difference in force output showed great intrasubject variability.
CONCLUSION: Isometric assessment performed on a leg press device requires minimal habituation to demonstrate a good degree of reproducibility and sensitivity to detect small changes in performance. It is a simple and practical method to evaluate strength at different joint angles, which may prove useful in strength diagnosis in performance and clinical contexts
Inside the Household: Poor children, women and men
The Poverty and Shared Prosperity series provides a global audience with the latest and most accurate estimates on trends in global poverty and shared prosperity. The 2018 edition — Piecing Together the Poverty Puzzle —broadens the ways we define and measure poverty. It presents a new measure of societal poverty, integrating the absolute concept of extreme poverty and a notion of relative poverty reflecting differences in needs across countries. It introduces a multi-dimensional poverty measure that is anchored on household consumption and the international poverty line of $1.90 per person per day but broadens the measure by including information on access to education and basic infrastructure. Finally, it investigates differences in poverty within households, including by age and gender
A New Specimen of Ornithomimid (Theropoda) from Dinosaur Provincial Park Provides Unprecedented Details in Dinosaur Plumage and Feather Evolution
Rethinking Doping
Despite the important role doping plays in the world of sport, insufficient attention has been given to understanding the concept of doping. In this paper, I argue that we should understand doping as a means of gaining a competitive advantage through the use of exogenous substances entering an athlete’s body, where such means undermine the relevant sporting institution. By focusing on sport as socially constructed institution, not merely as competition, we can have a unified explanation for many of our pretheoretic beliefs while giving the tools to understand doping in the ever-changing landscape of contemporary sport and society
COVID-19 Unmasks the NCAA’s Collegiate Model Myth
The National Collegiate Athletic Association (NCAA) positions itself as an institution primarily dedicated to the health and betterment of “student-athletes” across the country, but in reality it is not so virtuous. This paper will show how decisions made during the COVID-19 pandemic of 2020 undermine the stated purpose of the current intercollegiate sports model in the United States. It will begin by presenting the claimed goals and values of the NCAA. Then, it will show how many decisions made during the COVID-19 pandemic of 2020 are incompatible with these goals. In doing so, it will illustrate that there is one purpose that is far more in line with decisions during the 2020 pandemic: revenue generation through mass entertainment. Even for those who have long bought into the NCAA’s noble rhetoric, COVID-19 is mask off for the NCAA’s “collegiate model” myth
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