84 research outputs found
Search for the [Theta]âș Pentaquark in the Reaction [gamma]d->pKâșKâ»n with CLAS
Abstract available
Deep Learning Level-3 Electron Trigger for CLAS12
Fast, efficient and accurate triggers are a critical requirement for modern
high-energy physics experiments given the increasingly large quantities of data
that they produce. The CEBAF Large Acceptance Spectrometer (CLAS12) employs a
highly efficient electron trigger to filter the amount of recorded data by
requiring at least one electron in each event, at the cost of a low purity in
electron identification. Machine learning algorithms are increasingly employed
for classification tasks such as particle identification due to their high
accuracy and fast processing times. In this article, we show how a
convolutional neural network could be deployed as a Level 3 electron trigger at
CLAS12. We demonstrate that the AI trigger would achieve a significant data
reduction compared to the traditional trigger, whilst preserving a 99.5\%
electron identification efficiency. The AI trigger purity as a function of
increased luminosity is improved relative to the traditional trigger. As a
consequence, this AI trigger can achieve a data recording reduction improvement
of 0.33\% per nA when compared to the traditional trigger whilst maintaining an
efficiency above 99.5\%. A reduction in data output also reduces storage costs
and post-processing times, which in turn reduces the time to the publication of
new physics measurements
Characterising encapsulated nuclear waste using cosmic-ray muon tomography
Tomographic imaging techniques using the Coulomb scattering of cosmic-ray
muons have been shown previously to successfully identify and characterise low-
and high-Z materials within an air matrix using a prototype scintillating-fibre
tracker system. Those studies were performed as the first in a series to assess
the feasibility of this technology and image reconstruction techniques in
characterising the potential high-Z contents of legacy nuclear waste containers
for the UK Nuclear Industry. The present work continues the feasibility study
and presents the first images reconstructed from experimental data collected
using this small-scale prototype system of low- and high-Z materials
encapsulated within a concrete-filled stainless-steel container. Clear
discrimination is observed between the thick steel casing, the concrete matrix
and the sample materials assayed. These reconstructed objects are presented and
discussed in detail alongside the implications for future industrial scenarios.Comment: 6 pages, 4 figure
Return to Sport after Surgical Treatment of Lisfranc Injuries in Athletes: A Retrospective Case Series
Introduction
A Lisfranc injury can be a devastating injury in athletes,and if inadequately treated, may lead to chronic pain and lossof function. The purpose of this study was to determine the rate andtime until return to sport after surgical fixation for a ligamentous Lisfrancinjury. We hypothesized that open reduction and screw fixationof a ligamentous Lisfranc injury can be a successful treatment in theathletic population and allow patients to return to sport at close totheir preinjury level of play.
Methods
All patients who were analyzed underwent repair of aligamentous Lisfranc injury with open reduction and screw fixationby a single surgeon, were between 18 - 40 years old at time of theirfinal follow up, and were identified as being an athlete (either recreationalor competitive). Eligible patients were given a questionnairethat included if they were able to return to sport, time until return tosport, subjective percentage of pre-injury level of play, current pain(0 - 10), and complications.
Results
Eleven patients were identified as athletes. Ten (91%) wereavailable for follow-up with a mean of 36.5 months (range, 14 - 60).The average age was 25.4 years (range, 15 - 37) at time of surgery.Eighty percent (8/10) were able to return to sport. The average timeuntil return to sport was 29.4 weeks (range, 22 - 52) with an averagesubjective value of their pre-injury level of play of 87% (range, 70 -100%). However, 67% (6/9) of the athletes had occasional pain withsport with an average pain level of 2.1 (range, 0 - 5). Two patientshad complications, a superficial infection and a deep vein thrombosis.
Conclusion
Most athletes were able to return to sport after undergoingopen reduction and internal fixation of a ligamentous Lisfrancinjury by less than 30 weeks post-surgery with a subjective value of87% of their previous function. However, the majority of the patientsalso experienced some residual pain with their respective sport.These findings suggested that athletes with a ligamentous Lisfrancinjury can have reliably good outcomes with operative repair
Elective affinities of the Protestant ethic : Weber and the chemistry of capitalism
Peer reviewedPostprin
National Evaluation of the Culture Collective programme Part one: âUnprecedented and revitalisingâ - Emerging Impacts and Ways of Working: Reflections from the first year of the Culture Collective, Reporting from Queen Margaret University March 2023
David Stevenson - ORCID: 0000-0002-8977-1818
https://orcid.org/0000-0002-8977-1818Anthony Schrag - ORCID: 0000-0001-8660-7572
https://orcid.org/0000-0001-8660-7572The Culture Collective is a network of 26 participatory arts projects, shaped by local communities alongside artists and creative organisations, and funded by Scottish Government emergency COVID-19 funds through Creative Scotland. This report captures a snapshot of the programme a year into their work.https://www.creativescotland.com/resources-publications/research/archive/2023/national-evaluation-of-the-culture-collective-programmepubpu
- âŠ