USURJ: University of Saskatchewan Undergraduate Research Journal
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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
No full textInternational audienc
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
"Dance and Make Revels": Cross-Dressing Prostitutes and Gendered Performance as a Method of Accessing Agency in Medieval London
Full text linkDid prostitutes in medieval London have agency? This paper examines a new transcription of a medieval chancery bill concerning a woman accused of dressing in men\u27s clothing and attempting to seduce a merchant at Hanse precinct in London. Rather than assessing this accusation as a potential expression of identity, this paper assesses Joan White\u27s use of male clothing as a method of asserting limited agency over the lived experience of a medieval prostitute. By drawing on the work of Veronica Franco, another medieval courtesan, whose writings also suggest that she was accessing a certain type of agency, this article posits that while participants in the medieval sex trade did not necessarily have agency, they were able to access an "economy of makeshift" through which they could create limited facets of agency for themselves. 
Voices Unheard: Unveiling Women\u27s Testimony in 19th Century Canadian and American Extradition Courts
Full text linkThis paper examines the role of women\u27s testimony in extradition cases between Canada and the United States from 1868 to 1923. In Canada, only 35 women testified in court in a total of 407 cases. In most instances, the women testifying were married and testifying to their husband\u27s innocence or guilt. In these cases, their husband\u27s extradition, conviction, and liberation were often determined by what they said. Women who testified as victims of crimes, often assaults, saw far more ambiguous success. Ideas about the purity of women influenced whether the courts listened to the testimony of unmarried women and girls or allowed them to testify in the first place. Finally, in rare instances, women appeared in these transnational court cases in a professional capacity (often as doctors or secretaries). While married women were treated with respect and single women with some suspicion, divorced women were scrutinized heavily. This divergence, especially in the Canadian courts, emphasizes the uneven ways the border influenced married life. Divorce was illegal in Canada at this time, and marriage was viewed as the building block of Canada\u27s new society. As such, many divorced women who came from the United States were belittled and overly questioned compared to married women from Canada. As a result, this paper argues that Canadian and American attempts to punish criminals who fled across national borders prioritized looking at a woman\u27s marital status above all other factors when assessing whether a potential witness might have valuable information for the courts
Artwork: "The King"
No full textErin Baril is an honours student, double majoring in biology and biochemistry at the University of Saskachewan
S’adapter au changement climatique sur le littoral : retours empiriques sur une démarche participative chercheurs-habitants (Côte d’Opale, France)
No full textInternational audienceThis article presents and provides an empirical feedback on a participatory action process of co-construction of climate change adaptation strategies between researchers and residents of two coastal municipalities in the Hauts-de-France region (Oye-Plage and Wissant). The article is structured in two parts. The first part presents the methodological protocols used with a description of the participatory mechanisms (public meetings, participatory workshops, collaborative monitoring) and the tools used by the researchers. The second part provides feedback on these mechanisms by highlighting three main results following the analysis of this participatory approach and by underlining its progress and limitations.Cet article propose une présentation et un retour d’expérience empirique à propos d’une démarche d’action participative de co-construction, entre chercheurs et résidents de deux communes côtières de la région Hauts-de-France (Oye-Plage et Wissant), de stratégies d’adaptation au changement climatique. L’article est structuré en deux parties. La première partie présente les protocoles méthodologiques utilisés avec la description des dispositifs participatifs (réunions publiques, ateliers participatifs, suivis collaboratifs), les outils mobilisés par les chercheurs. La seconde partie propose un retour d’expérience sur ces dispositifs en mettant en avant trois principaux résultats suite à l’analyse de cette démarche participative et en soulignant les avancées et les limites de celle-ci
Analyzing the territorial dimensions of work through a comparative study of waste recovery facilities in France and Brazil
No full textInternational audienceBACKGROUND: Waste production and management from residents and collection for sorting are systems heavily dependent on territorial dimensions. Ergonomic research needs to better integrate such territorial determinants to improve work conditions and design sustainable work systems. OBJECTIVE: Through studies in France and Brazil, this paper analyzes the territorial relations that raise work systems’ sustainability challenges for materials recovery facilities (MRFs) and waste management in both countries and examines the links between work activity and territory in MRFs. METHODS: Both studies were based on the principles of activity-oriented ergonomics and used analyses of work activity and sociotechnical systems. The French study focused on interventions conducted over a 42-month period in five MRFs. The Brazilian study was based on a 20-month longitudinal qualitative and quantitative study. RESULTS: In this paper, we argue that territory is a key determining factor in waste production and work. Notably, the consumption patterns of residents and the economic flows within a geographic space determine the waste composition; and the territorially specified public policies, which define technical and social dimensions of waste collection and sorting. However, the territorial dimensions of waste are poorly considered in facility design. Workers’ health and sorting system performance are thus affected and negatively compromise plant performance. CONCLUSION: The territory appears as a blind spot in the design of work systems. One of the challenges is to create interfaces and devices that could help to integrate better human activity and waste territorialized anchorage, in a multilevel organization, from local communities to the global recycling chains