USURJ: University of Saskatchewan Undergraduate Research Journal
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Les outils et les parures en matière osseuse
No full textInternational audienceThis monograph presents the findings at Beaumont "le Crot aux Moines" (Yonne), a remarkable archaeological site of the Chasséen Culture. Enclosures, fireplaces and circular structures, with exceptionally abundant associated material, document and renew the regional Chasséen Culture. The high datation of the site's oldest structures, around 4500 BCE, raises the question of the emergence of this culture in Burgundy.Cette monographie présente les vestiges du site de Beaumont (Yonne), un gisement archéologique remarquable. Enceintes, foyers et structures circulaires auxquels un matériel exceptionnellement abondant est associé, documentent tout en les renouvelant le Chasséen régional. La haute datation des plus anciennes structures du site, autour de 4500 BCE, pose la question de l'émergence de cette culture en Bourgogne
Observation of production in collisions at TeV with the ATLAS detector
No full textInternational audienceThis Letter reports the observation of production and a measurement of its cross-section using 140.1 1.2 fb of proton-proton collision data recorded at a center-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. The production cross-section, with both the and bosons decaying leptonically, (), is measured in a fiducial phase-space region defined such that the leptons and the photon have high transverse momentum and the photon is isolated. The cross-section is found to be 2.01 0.30 (stat.) 0.16 (syst) fb. The corresponding Standard Model predicted cross-section calculated at next-to-leading order in perturbative quantum chromodynamics and at leading order in the electroweak coupling constant is 1.50 0.06 fb. The observed significance of the signal is 6.3, compared with an expected significance of 5.0
Search for non-resonant production of semi-visible jets using Run~2 data in ATLAS
No full textInternational audienceSemi-visible jets, with a significant contribution to the event's missing transverse momentum, can arise in strongly interacting dark sectors. This results in an event topology where one of the jets can be aligned with the direction of the missing transverse momentum. A search for semi-visible jets produced via a -channel mediator exchange is presented. The analysis uses collisions with an integrated luminosity of 139 fb and a centre-of-mass energy of 13 TeV, collected with the ATLAS detector during Run 2 of the LHC. No excess over Standard Model predictions is observed. Assuming a coupling strength of unity between the mediator, a Standard Model quark and a dark quark, mediator masses up to 2.7 TeV can be excluded at the 95% confidence level. Upper limits on the coupling strength are also derived
Test of CP-invariance of the Higgs boson in vector-boson fusion production and its decay into four leptons
No full textInternational audienceA search for CP violation in the decay kinematics and vector-boson production of the Higgs boson is performed in the () decay channel. The results are based on proton-proton collision data produced at the LHC at a centre-of-mass energy of 13 TeV and recorded by the ATLAS detector from 2015 to 2018, corresponding to an integrated luminosity of 139 \mbox{fb\(^{-1}\)}. Matrix element-based optimal observables are used to constrain CP-odd couplings beyond the Standard Model in the framework of Standard Model effective field theory expressed in the Warsaw and Higgs bases. Differential fiducial cross-section measurements of the optimal observables are also performed, and a new fiducial cross-section measurement for vector-boson-fusion production is provided. All measurements are in agreement with the Standard Model prediction of a CP-even Higgs boson
Aménagements mobiliers et immobiliers dans les bibliothèques de l'Orient gréco-romain
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Sequential Harmonic Component Tracking For Underdetermined Blind Source Separation in a Multi-Target Tracking Framework
No full textInternational audienceSmart factories are composed of heterogeneous cyber-physical systems. In light of their complexity and the lack of transparency in their design, monitoring the health of these machines in real-time is made possible by the use of non-intrusive sensors. Such sensors produce mixed signals capturing component-specific signatures. Retrieving the activation statuses of the components (over the different operating modes of a machine) is essential for estimating their associated performance indicators. This is a special case of Underdetermined Blind Source Separation (UBSS), yet a sensor fusion perspective is adopted in this paper. A harmonic component detector produces observations in the Time-Frequency (TF) domain, inherently entailing noise-induced false alarms. The main contribution of this paper consists in a clutter-resilient multi-harmonic component tracking algorithm, based on the Sequential Monte-Carlo Probability Hypothesis Density (SMC-PHD) filter. Additionally, this paper presents a track association algorithm adapting the results obtained in the multi-target tracking framework for unsupervised multi-label classification. The combination of the two algorithms mitigates typical difficulties encountered in traditional UBSS problems, such as non-stationary and partially-coupled mode decomposition. The performance of the proposed technique is assessed upon synthetic data
A novel lift controller for a wind turbine blade section using an active flow control device including saturations: experimental results
No full textInternational audienceIn this paper, a recently developed adaptive version of super-twisting is applied to the control of the aerodynamic lift on a wind turbine blade section, while considering local disturbances in the airflow. The proposed control law serves as a model-free control strategy, relying on only two parameters. This strategy reduces the need for tuning and modeling efforts: the first parameter governs the speed of gain variation, while the second parameter is associated with the desired accuracy, enabling control of unknown dynamics. We discuss the capability of the proposed model to track the lift reference of a wind turbine blade in the presence of external perturbations and actuator saturation. Experimental results demonstrate the feasibility of such control
Transgender and Gender Diverse Healthcare in Canada: An Analysis of the Canadian Health System
Get PDFTransgender and gender-diverse (TGD) individuals have been found to be disproportionately exposed to prejudice within the Canadian healthcare system. This paper analyzes Canadian studies conducted throughout the past decade with themes pertaining to gender-diverse issues in healthcare. This analysis found that a lack of TGD-specific healthcare education, as well as discrimination towards TGD individuals within the healthcare system, act as barriers to health-seeking behaviours in TGD persons. A lack of nation-wide standardization in policies and services offered to TGD patients, particularly in gender-affirming care, also acts as a barrier to proper treatment of TGD patients. Implementing federal policies specific to gender-diverse needs may aid in standardizing and normalizing the treatment of TGD patients. In addition, mandating TGD-specific education in medical schooling could also act to improve TGD healthcare in Canada
Anti-Racist Lesson Plan: How to Teach about Canadian Residential Schools in the Early Years
No full textThis paper delves into a personal exploration of race, identity, and experience in the University of Saskatchewan’s Anti-Racist Education Mentorship (AEM) Project. I recount my process of learning about racism, its ramifications in society, and my conclusion that racism is taught and passed down generationally. I define anti-racism and emphasize the importance of anti-racist education when pursuing racial justice. I detail my experience creating an anti-racist lesson plan about residential schools in Canada and delivering my lesson plan to grade 2/3 students in Saskatoon, Saskatchewan. I reflect on this teaching experience, students\u27 engagement, and understanding of anti-racism concepts, and I stress the importance of age-appropriate discussions surrounding racism. My experience delivering an anti-racist lesson to grade 2/3 students disrupts the status quo by challenging the conventional belief that early elementary students are not mature enough to discuss experiences of racism