USURJ: University of Saskatchewan Undergraduate Research Journal
Not a member yet
18449 research outputs found
Sort by
Anomaly detection search for new resonances decaying into a Higgs boson and a generic new particle in hadronic final states using TeV collisions with the ATLAS detector
No full textInternational audienceA search is presented for a heavy resonance decaying into a Standard Model Higgs boson and a new particle in a fully hadronic final state. The full Large Hadron Collider Run 2 dataset of proton-proton collisions at TeV collected by the ATLAS detector from 2015 to 2018 is used, and corresponds to an integrated luminosity of 139 fb. The search targets the high -mass region, where the and have a significant Lorentz boost in the laboratory frame. A novel signal region is implemented using anomaly detection, where events are selected solely because of their incompatibility with a learned background-only model. It is defined using a jet-level tagger for signal-model-independent selection of the boosted particle, representing the first application of fully unsupervised machine learning to an ATLAS analysis. Two additional signal regions are implemented to target a benchmark decay into two quarks, covering topologies where the is reconstructed as either a single large-radius jet or two small-radius jets. The analysis selects Higgs boson decays into , and a dedicated neural-network-based tagger provides sensitivity to the boosted heavy-flavor topology. No significant excess of data over the expected background is observed, and the results are presented as upper limits on the production cross section ) for signals with between 1.5 and 6 TeV and between 65 and 3000 GeV
L'expérience partagée au café-concert du XIX e siècle
No full textInternational audienceThe café-concert’s history is associated with the industrial development of music, but the very specific relations between artists and spectators have more rarely been studied. The formula implemented in these establishments allows great freedoms for performers as well as for the public, whose pleasure comes, in large part, from continuous interactions. More than a show, it is a lived and shared experience, without any real border between stage and audience.L’histoire du café-concert est associée au développement industriel de la chanson, mais on a plus rarement étudié les relations très spécifiques qui unissent artistes et spectateurs. La formule mise en place dans ces établissements autorise de grandes libertés pour les interprètes comme pour le public, dont le plaisir provient, en grande partie, des interactions continues. Plus qu’un spectacle, il s’agit d’une expérience vécue et partagée, sans frontière véritable entre scène et salle
Stimulating the motor development of very premature infants: effects of early crawling training on a mini-skateboard
No full textInternational audienceAim To examine the effects of an early home-based 8-week crawling intervention performed by trained therapists on the motor and general development of very premature infants during the first year of life. Methods At term-equivalent age, immediately following discharge from the Neonatal Intensive Care Unit (NICU), we randomly allocated 44 premature infants born before 32 weeks' gestation without major brain damage to one of three conditions in our intervention study: crawling on a mini-skateboard, the Crawliskate (Crawli), prone positioning control (Mattress), or standard care (Control). The Crawli and Mattress groups received 5 min daily at-home training administered by trained therapists for 8 consecutive weeks upon discharge from the NICU. The outcomes of greatest interest included gross motor development (Bayley-III) at 2, 6, 9, and 12 months (primary outcome) corrected age (CA), mature crawling at 9 months CA and general development at 9 and 12 months CA [Ages and Stages Questionnaires-3 (ASQ-3)]. The study was registered at www.clinicaltrials.gov ; registration number: NCT05278286. Results A 3 (Condition) × 4 (Age) repeated measures ANOVA revealed that Crawli group infants had significantly higher Bayley-III gross motor development scores than Mattress and Control group infants. Crawli group infants also scored significantly higher on groups of Bayley-III items related to specific motor skills than infants in the other groups, including crawling at 9 months CA. We found significant differences in favor of the Crawli group in separate one-way ANOVAs at each of the ages we examined. A 3 (Condition) × 2 (Age) repeated measures ANOVA revealed that the Crawli group scored significantly higher than the Control group for the ASQ-3 total score and communication score and significantly higher for the fine motor score than the Control and Mattress groups. We found additional significant differences in favor of the Crawli group for other dimensions of the ASQ-3 in separate one-way ANOVAs at 9 and 12 months CA. Interpretation Early crawling training on a Crawliskate provides an effective way to promote motor and general development in very premature infants. The findings also provide clear evidence for a link between newborn crawling and more mature crawling later in development
El cine epistolar de Carolina Astudillo: de la carta filmada al film-carta
No full textInternational audienceEsta contribución se interesa por la articulación entre lo fílmico y lo epistolar, recordando primero sus principales modalidades para luego centrarse en la filmografía de Carolina Astudillo, quien combina usos apropiacionistas de archivos epistolares y composición experimental de cartas fílmicas, reinventando un «cinescritura» contemporáneo
