9,027 research outputs found
1, 2, 3, Stop the Bleed: Analysis of a Bleeding Control Educational Course
Hemorrhaging, or uncontrolled bleeding, accounts for 40% of preventable deaths in the United States that occur after a traumatic injury. The Stop the Bleed campaign was launched in 2015 by the White House National Security Council to educate the public about methods to control and stop bleeding as well as empower individuals to take action if a traumatic accident occurs. The goal of this study was to evaluate the effectiveness of the āStop the Bleedā bleeding control course to increase knowledge about the topic as well as increase confidence to take action and use the techniques that were taught during the course appropriately. Data was collected via a cross sectional pre-post survey design. At baseline, the participants were asked basic knowledge questions about bleeding control and techniques to use as well as how confident they felt using those skills. After being presented the bleeding control material and practicing the techniques in the hands-on portion of the course, the participants were asked to complete a post-test with similar questions to that of the pre-test. De-identified responses were collected to analyze the changes in the overall knowledge scores and overall confidence scores with the use of the paired-t statistical test on SPSS. The participants (N=32) were employees within the Thomas Jefferson University Campus Security department. The overall score for the knowledge-based questions were analyzed from pre to post and showed that the changes were statistically significant (8.163,
Actions for Vacuum Einstein's Equation with a Killing Symmetry
In a space-time with a Killing vector field which is either
everywhere timelike or everywhere spacelike, the collection of all trajectories
of gives a 3-dimension space . Besides the symmetry-reduced action
from that of Einstein-Hilbert, an alternative action of the fields on is
also proposed, which gives the same fields equations as those reduced from the
vacuum Einstein equation on .Comment: 8 pages, the difference between the action we proposed and the
symmetry-reduced action is clarifie
Functional Accessibility on the Web: How the AODA Fails End Users
The Accessibility for Ontarians with Disabilities Act, 2005 (AODA) impacts the way persons with disabilities are able to access goods and services in Ontario. With more than 3 million people living with disabilities in Ontario, it is essential to enact the legislation to create equity. The AODA equates āobtainableā with āaccessibleā without recognizing the stark contrast between having access to something and being able to keep informed because the content is created with persons with disabilities in mind. This paper focuses on the effectiveness of the AODAās website compliance standards under the Web Content Accessibility Guidelines (WCAG) as required by Ontario Regulation 191/11, section 14 (O. Reg. 191/11s.14). Through an examination of the compliance requirements in comparison to the āFive Eā Approach to Policy Analysis it is apparent that the AODA does not create equity or equality, but rather is a tool for the Ontario Government to demonstrate that it is moving toward making Ontario accessible for persons with disabilities. The āFive Eā Approach to Policy Analysis of the AODA demonstrates that O. Reg. 191/11 s.14 does not have the proper mechanisms in place to ensure equity in Ontario with regards to websites and internet usage. It is hoped that this study will increase awareness about the discrepancy between what is written in the AODA and the type of accessibility needed for persons with disabilities in Ontario so the Government can move forward towards true equity
Collinear Subtractions in Hadroproduction of Heavy Quarks
We present a detailed discussion of the collinear subtraction terms needed to
establish a massive variable-flavour-number scheme for the one-particle
inclusive production of heavy quarks in hadronic collisions. The subtraction
terms are computed by convoluting appropriate partonic cross sections with
perturbative parton distribution and fragmentation functions relying on the
method of mass factorization. We find (with one minor exception) complete
agreement with the subtraction terms obtained in a previous publication by
comparing the zero-mass limit of a fixed-order calculation with the genuine
massles results in the MSbar scheme. This presentation will be useful for
extending the massive variable-flavour-number scheme to other processes.Comment: 29 pages, 17 figures include
Pair Production of Charged Higgs Bosons from Bottom-Quark Fusion
For very large values of , charged Higgs boson pair production at
the Large Hadron Collider (LHC) from the scattering of two bottom quarks can
proceed dominantly. We investigated the cross sections of charged Higgs boson
pair production via the subprocess at the LHC including
the next-to-leading order (NLO) QCD corrections in the minimal supersymmetric
standard model (MSSM). We find that the NLO QCD corrections can significantly
reduce the dependence of the cross sections on the renormalization and
factorization scales.Comment: small changes are mad
Tests of conservation laws in post-Newtonian gravity with binary pulsars
General relativity is a fully conservative theory, but there exist other
possible metric theories of gravity. We consider non-conservative ones with a
parameterized post-Newtonian (PPN) parameter, . A non-zero
induces a self-acceleration for the center of mass of an eccentric binary
pulsar system, which contributes to the second time derivative of the pulsar
spin frequency, . In our work, using the method in Will (1992), we
provide an improved analysis with four well-timed, carefully-chosen binary
pulsars. In addition, we extend Will's method and derive 's effect on
the third time derivative of the spin frequency, \dddot{\nu}. For PSR
B1913+16, the constraint from \dddot{\nu} is even tighter than that from
. We combine multiple pulsars with Bayesian inference, and obtain
an upper limit, at 95% confidence
level, assuming a flat prior in . It
improves the existing bound by a factor of three. Moreover, we propose an
analytical timing formalism for . Our simulated times of arrival with
simplified assumptions show binary pulsars' capability in limiting ,
and useful clues are extracted for real data analysis in future. In particular,
we discover that for PSRs B1913+16 and J07373039A, \dddot{\nu} can yield
more constraining limits than .Comment: 14 pages, 5 figures, 4 tables; accepted by Ap
Characterization of two Runx1-dependent nociceptor differentiation programs necessary for inflammatory versus neuropathic pain
BACKGROUND: The cellular and molecular programs that control specific types of pain are poorly understood. We reported previously that the runt domain transcription factor Runx1 is initially expressed in most nociceptors and controls sensory neuron phenotypes necessary for inflammatory and neuropathic pain. RESULTS: Here we show that expression of Runx1-dependent ion channels and receptors is distributed into two nociceptor populations that are distinguished by persistent or transient Runx1 expression. Conditional mutation of Runx1 at perinatal stages leads to preferential impairment of Runx1-persistent nociceptors and a selective defect in inflammatory pain. Conversely, constitutive Runx1 expression in Runx1-transient nociceptors leads to an impairment of Runx1-transient nociceptors and a selective deficit in neuropathic pain. Notably, the subdivision of Runx1-persistent and Runx1-transient nociceptors does not follow the classical nociceptor subdivision into IB4+ nonpeptidergic and IB4- peptidergic populations. CONCLUSION: Altogether, we have uncovered two distinct Runx1-dependent nociceptor differentiation programs that are permissive for inflammatory versus neuropathic pain. These studies lend support to a transcription factor-based distinction of neuronal classes necessary for inflammatory versus neuropathic pain
Moments of the neutron g(2) structure function at intermediate Q(2)
We present new experimental results for the He-3 spin structure function g(2) in the resonance region atQ 2 values between 1.2 and 3.0 (GeV/c)(2). Spin dependent moments of the neutron were extracted. Our main result, the inelastic contribution to the neutron d(2) matrix element, was found to be small at \u3c Q(2)\u3e = 2.4 (GeV/c)(2) and in agreement with the lattice QCD calculation. The Burkhardt-Cottingham sum rule for He-3 and the neutron was tested with the measured data and using the Wandzura-Wilczek relation for the low x unmeasured region
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