88 research outputs found
Making waves in education
Making Waves in Education is a book of a collaborative nature, being a collection of chapters written by undergraduates studying B.A. Hons in Education at the Universities of Plymouth and York. Thirteen chapters, each from a different student, cover topics from learning theories to sex education, home education and autism. The chapters are well-organised and written, and they cover key topics in an accessible and thoughtful way. The chapters are generally well - referenced and present critical and balanced arguments. Many use hard statistics in an effective way to back up their points and all include bibliographies as indeed one expects from a serious publication. The collection therefore addresses itself to a wide readership of anyone interested in education, and students and teachers/trainers in HE in particula
Neutral Gas Outflows and Inflows in Infrared-Faint Seyfert Galaxies
Previous studies of the Na I D interstellar absorption line doublet have
shown that galactic winds occur in most galaxies with high infrared
luminosities. However, in infrared-bright composite systems where a starburst
coexists with an active galactic nucleus (AGN), it is unclear whether the
starburst, the AGN, or both are driving the outflows. The present paper
describes the results from a search for outflows in 35 infrared-faint Seyferts
with 10^9.9 < L_IR/L_sun < 10^11, or, equivalently, star formation rates (SFR)
of ~0.4 -- 9 solar masses per year, to attempt to isolate the source of the
outflow. We find that the outflow detection rates for the infrared-faint
Seyfert 1s (6%) and Seyfert 2s (18%) are lower than previously reported for
infrared-luminous Seyfert 1s (50%) and Seyfert 2s (45%). The outflow kinematics
of infrared-faint and infrared-bright Seyfert 2 galaxies resemble those of
starburst galaxies, while the outflow velocities in Seyfert 1 galaxies are
significantly larger. Taken together, these results suggest that the AGN does
not play a significant role in driving the outflows in most infrared-faint and
infrared-bright systems, except the high-velocity outflows seen in Seyfert 1
galaxies. Another striking result of this study is the high rate of detection
of inflows in infrared-faint galaxies (39% of Seyfert 1s, 35% of Seyfert 2s),
significantly larger than in infrared-luminous Seyferts (15%). This inflow may
be contributing to the feeding of the AGN in these galaxies, and potentially
provides more than enough material to power the observed nuclear activity over
typical AGN lifetimes.Comment: 17 pages, 12 figures, published in ApJ (article updated 12/30/09
Firearm Curriculum for Pediatric Residents Improves Safe Storage Counseling
Objectives
Firearms are the leading cause of death among children and adolescents. Despite evidence to support physician training in firearm safety counseling, formal curricula are limited in pediatric residency programs. We sought to develop and implement a resident-led, feasible, sustainable, and impactful firearm safety curriculum for pediatric residents.
Methods
A firearm safety curriculum was developed by pediatric residents using Kern’s curriculum development framework and delivered to their peers at a single academic center from 2019 - 2020. The three-part series included workshops on basic firearm safety counseling principles, case-based practice, and advocacy training and a gun lock program in collaboration with the local police department. Impact was measured by feasibility, sustainability, acquired knowledge, and provision of counseling to patients and families.
Results
A total of 31 residents participated in the three-hour lecture series. Sessions were integrated into the existing didactic curriculum, and no costs or faculty time were required for implementation. A total of 1,477 patient charts were reviewed from 2019 - 2021. Compared to a historical cohort, participants asked about presence of a firearm (27% to 69%, p \u3c .0001) and counseled on firearm safety more often (25% vs. 9%, p \u3c .0001).
Conclusions
A firearm safety curriculum designed specifically for pediatric residents was deemed feasible and resulted in a statistically significant improvement in inquiries about firearm ownership and safety counseling in an urban tertiary care continuity clinic. This study highlights the value in providing firearm safety education at the resident level to foster more discussions to keep children safe from firearm injuries
Biological control of the vernal population increase of Calanus finmarchicus on Georges Bank
Author Posting. © Elsevier B.V., 2006. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Deep Sea Research Part II: Topical Studies in Oceanography 53 (2006): 2632-2655, doi:10.1016/j.dsr2.2006.08.011.An adjoint data assimilation approach was used to quantify the physical and biological controls on Calanus finmarchicus N3 to C stages on Georges Bank and its nearby environs. The mean seasonal cycle of vertically-averaged distributions, from 5 years of the GLOBEC Georges Bank Broad-Scale Surveys between January and June, was assimilated into a physical-biological model based on the climatological circulation. Large seasonal and spatial variability is present in the inferred supply sources, mortality rates, computed molting fluxes, and physical transports. Estimated mortalities fall within the range of observed rates, and exhibit stage structure that is consistent with earlier findings. Inferred off-bank initial conditions indicate that the deep basins in the Gulf of Maine are source regions of early-stage nauplii and late-stage copepodids in January. However, the population increase on Georges Bank from January to April is controlled mostly by local biological processes. Magnitudes of the physical transport terms are nearly as large as the mortality and molting fluxes, but their bank-wide averages are small in comparison to the biological terms. The hypothesis of local biological control is tested in a sensitivity experiment in which upstream sources are set to zero. In that solution, the lack of upstream sources is compensated by a decrease in mortality that is much smaller than the uncertainty in observational estimates.This work was supported by the US GLOBEC Georges Bank program: Integration and Synthesis of Georges Bank Broad-Scale Survey Results, sponsored by NSF (OCE-0233800) and NOAA (NA17RJ1223)
The Cult Statues of the Pantheon
This article reconsiders the possible statuary of the Pantheon in Rome, both in its original Augustan form and in its later phases. It argues that the so-called ‘Algiers Relief’ has wrongly been connected with the Temple of Mars Ultor and is in fact evidence of the association of the Divus Julius with Mars and Venus in the Pantheon of Agrippa, a juxtaposition which reflects the direction of Augustan ideology in the 20s b.c. and the building's celestial purpose. This triple statue group became the focus of the later Pantheon, and its importance is highlighted by the hierarchized system of architectural ornament of the present building
QCD and strongly coupled gauge theories : challenges and perspectives
We highlight the progress, current status, and open challenges of QCD-driven physics, in theory and in experiment. We discuss how the strong interaction is intimately connected to a broad sweep of physical problems, in settings ranging from astrophysics and cosmology to strongly coupled, complex systems in particle and condensed-matter physics, as well as to searches for physics beyond the Standard Model. We also discuss how success in describing the strong interaction impacts other fields, and, in turn, how such subjects can impact studies of the strong interaction. In the course of the work we offer a perspective on the many research streams which flow into and out of QCD, as well as a vision for future developments.Peer reviewe
Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector
A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements
Effectiveness of a national quality improvement programme to improve survival after emergency abdominal surgery (EPOCH): a stepped-wedge cluster-randomised trial
Background: Emergency abdominal surgery is associated with poor patient outcomes. We studied the effectiveness of a national quality improvement (QI) programme to implement a care pathway to improve survival for these patients. Methods: We did a stepped-wedge cluster-randomised trial of patients aged 40 years or older undergoing emergency open major abdominal surgery. Eligible UK National Health Service (NHS) hospitals (those that had an emergency general surgical service, a substantial volume of emergency abdominal surgery cases, and contributed data to the National Emergency Laparotomy Audit) were organised into 15 geographical clusters and commenced the QI programme in a random order, based on a computer-generated random sequence, over an 85-week period with one geographical cluster commencing the intervention every 5 weeks from the second to the 16th time period. Patients were masked to the study group, but it was not possible to mask hospital staff or investigators. The primary outcome measure was mortality within 90 days of surgery. Analyses were done on an intention-to-treat basis. This study is registered with the ISRCTN registry, number ISRCTN80682973. Findings: Treatment took place between March 3, 2014, and Oct 19, 2015. 22 754 patients were assessed for elegibility. Of 15 873 eligible patients from 93 NHS hospitals, primary outcome data were analysed for 8482 patients in the usual care group and 7374 in the QI group. Eight patients in the usual care group and nine patients in the QI group were not included in the analysis because of missing primary outcome data. The primary outcome of 90-day mortality occurred in 1210 (16%) patients in the QI group compared with 1393 (16%) patients in the usual care group (HR 1·11, 0·96–1·28). Interpretation: No survival benefit was observed from this QI programme to implement a care pathway for patients undergoing emergency abdominal surgery. Future QI programmes should ensure that teams have both the time and resources needed to improve patient care. Funding: National Institute for Health Research Health Services and Delivery Research Programme
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