Liste complète
La lecture de ces thèses nécessite une redirection vers le site du dépôt institutionnel.
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2024 — L'insécurité linguistique chez les élèves d'immersion française en SaskatchewanRésumé
Although French immersion program has been quite successful over the last few years in Saskatchewan due to the number of students enrolled in the program, many students in the program demonstrate a lack of confidence in expressing themselves in French. This PhD thesis attempts to provide a better understanding of linguistic insecurity among French immersion students in Saskatchewan while drawing on the perspectives of students and teachers; perspectives such as these are not clearly reflected in most studies on linguistic insecurity among French immersion students in Canada. The qualitative and quantitative data collected from students and teachers lead to the … Lire la suite
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2024 — Do microaggressions influence cognitive performance of racial minorities?Résumé
Within the university setting, students from marginalized groups may be more likely to experience microaggressions and associated harmful effects than their White counterparts. This study investigated whether experiencing a racial microaggression hinders performance on a cognitive task among racialized students. Undergraduate students (n = 256) completed a demographic survey and then were randomly assigned to a racial microaggression or control condition in which they watched a video explaining a cognitive task (i.e., mental rotation), completed a mental rotation task, and completed ethnic identification, discomfort, and perceived discrimination measures. Racialized students had higher ethnic identification levels than White students. Further, students … Lire la suite
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2024 — Hydrothermal liquefaction of pulp and paper mill residues for renewable biocrude productionRésumé
The climate change challenge has prompted global governments and international organizations to implement measures aimed at reducing greenhouse gas emissions and mitigating their impact on the ecosystem. The pulp and paper industry, a major contributor to global waste generation, often lacks efficient waste disposal methods despite the energy-rich nature of its waste products. Consequently, there is a pressing need to intensify research efforts on valorizing and utilizing pulp and paper waste residues thereby checking the inordinate disposal of effluents from this sector, hence this thesis. The objective of this research is to investigate the effects of reaction parameters such as … Lire la suite
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2024 — FPGA implementation of Complex-valued Neural Network for Polar-represented image classificationRésumé
This thesis explores a novel approach to image classification by deploying a complex-valued neural network (CVNN) on a field-programmable gate array (FPGA), specifically for classifying 2D images transformed into polar form. The aim of this research is to address the limitations of existing neural network models in terms of energy and resource efficiency, by exploring the potential of FPGA-based hardware acceleration in conjunction with advanced neural network architectures like CVNNs. The methodological innovation of this research lies in the Cartesian to polar transformation of 2D images, effectively reducing the input data volume required for neural network processing. Subsequent efforts focused … Lire la suite
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2024 — Kiannet: An attention-based CNN-RNN model for violence detectionRésumé
Violent behaviour poses a significant risk to societal stability and public safety. As part of proactive strategies to counteract this threat, many organizations and institutions have implemented surveillance systems to monitor and identify potential violent instances. Nevertheless, manual review and analysis of vast surveillance footage can be a daunting and error-prone task for human operators, necessitating the advent of automated systems for efficient and precise violence detection. This study introduces a novel approach for violence detection composed of a CNNRNN structure based on an attention mechanism for binary and multi-class classification of abnormal behaviours. We called our proposed model KianNet … Lire la suite
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2024 — Saturated-unsaturated behavior of natural cohesionless soilsRésumé
Cohesionless soils exist across the globe, under various geological settings and climatic regimes, in two distinct natural states. Disintegrated sediments, where soil particles are loosely held together through particle interlocking such as freshly deposited sediments, and intact deposits, in which soil particles are primarily held together through interparticle suction bonding. The geotechnical behavior of such soils is governed by field conditions of applied stress and atmospheric conditions. This research focused on developing a clear understanding of the saturated-unsaturated behavior of cohesionless soils by mimicking the two natural soil states for laboratory investigations (flow-through, volume change, and shear strength) and by … Lire la suite
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2024 — Detection and monitoring of ransomware attacks using machine learning and Deep LearningRésumé
This thesis presents a comprehensive investigation into the threat of ransomware and explores recent advancements in detection techniques. With the rise in the popularity of ransomware, a unique ecosystem of cybercriminals has emerged, leveraging encryption technology, anonymous cybersecurity, and easily accessible ransomware code. To address this growing concern, this thesis emphasizes the need for a machine learning (ML) and Deep Learning (DL) solution to detect ransomware attacks. Additionally, the study introduces the utilization of Software Defined Networking (SDN) combined with ML and DL for enhanced ransomware detection and mitigation. In our pursuit of demonstrating ransomware detection capabilities, we introduce an … Lire la suite
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2024 — Pulsed electric field pretreatment of lignocellulose biomass for maximum fermentable sugar yieldRésumé
The utilization of lignocellulosic biorefinery processes holds great promise for the production of biofuels and biochemicals. Lignocellulosic biomass, which includes materials such as plant straw, chaff, various grasses, sawdust, soft and hard woods, tree leaves, and paper waste, represents an abundant resource. However, these materials possess tough cell walls and bonding structures that restrict enzyme accessibility during hydrolysis, leading to a reduced yield of fermentable sugars. Numerous pretreatment methods have been explored to address the recalcitrance of lignocellulosic biomass. However, many of these methods are either costly or environmentally harmful due to their substantial energy or chemical consumption and waste … Lire la suite
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2024 — Elucidating mechanisms of acid tolerance and antibiotic resistance in Salmonella and Klebsiella using transposon insertion sequencing (INSeq) and whole genome sequencingRésumé
Salmonella enterica and Klebsiella pneumoniae are two major public health concerns that are responsible for millions of illnesses every year throughout the world. Much remains to explore the genes and mechanisms that are critical for their pathogenesis and antibiotic resistance. I used transposon Insertion Sequencing (INSeq), a powerful high-throughput screening technique that can link bacterial genes to phenotypes and identify genes that are essential for bacterial survival, to determine genes that are associated with survivability of Salmonella Typhimurium in Luria Bertani (LB), E-minimal medium (EMM) and under acid stress, and of K. pneumoniae under exposure to five classes of antibiotics. … Lire la suite
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2024 — Policy priorities for aging adults with autism: Perspectives of personal support personsRésumé
Background: The field of aging with autism spectrum disorder is a rapidly growing area of research. Experts are increasingly focused on understanding the unique challenges faced by adults on the spectrum as they navigate aging. The challenges include aspects like maintaining independence, managing sensory sensitivities, and navigating potential changes in cognitive function. While these challenges are real, there is also a tremendous opportunity to discover and implement effective support systems. By learning more about the specific needs of adults with autism, we can develop targeted interventions and resources that empower them to thrive throughout their lives. This could encompass everything … Lire la suite
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2024 — L'efficacité du programme de l'année à l'étranger pour les étudiants de français au Ghana: perspectives des professeurs et des étudiantsRésumé
The growing interest in learning French in Ghana has become markedly noticeable. This increase can be attributed to a strategic emphasis placed on French education by the Ghanaian government, driven by the country's close proximity to francophone neighbors like Ivory Coast, Burkina Faso, and Togo. Additionally, in April 2019, the Ghanaian government announced plans to adopt French as one of the nation's official languages, further bolstering this initiative. This study investigates the effectiveness of a Year-Abroad program in enhancing French language proficiency among students at Ghanaian universities. With a focus on oral competence, the research assesses linguistic improvements by comparing … Lire la suite
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2024 — On the class of graphs ZPRésumé
The following research was primarily focused on the class of graphs denoted by ZP. Let G = (V,E) be a graph made up of vertices V and edges E. The path cover number and zero forcing number are two graph parameters that have been of recent research interests and are closely related. Zero forcing at it’s most rudimentary, is a graph colouring game. There is a significant preexisting body of work on zero forcing, which includes relations between zero forcing and path cover numbers (denoted by Z(G) and P(G), respectively), as well as a relation between zero forcing and a … Lire la suite
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2024 — Psychometric evaluation of the COVID stress scales in older adults and the impact of ageism and pain on COVID-related stressRésumé
The literature has documented strong manifestations of ageism stemming from the COVID-19 pandemic (e.g., social media posts suggesting that older adults’ deaths from COVID-19 are less tragic than younger individuals, beliefs that public health restrictions should only target older persons). Additionally, pain is highly prevalent among older adults and often limits mobility, which can exacerbate stress and pain severity during pandemics in which public health measures promote physical distancing or impose restrictions that reduce access to pain treatment. Prior to the COVID-19 pandemic, both ageism and pain have been identified as predictors of adverse health outcomes in older adults (e.g., … Lire la suite
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2024 — Stability studies of a novel amine blend for the capture of CO2 generated from indirect co-combustion of natural gas and biomassRésumé
The excessive release of CO2 from human activities has led to global warming and climate change, becoming a critical global issue for many years. Data released by the Environment Protection Agency of United States in 2022 clearly shows that, CO2 is the most emitted gas among other greenhouse gases. In response, numerous strategies have been developed to address this pressing problem. One particularly compelling approach is to use an optimal mix of fuels in combination with post-combustion capture technology to achieve net-zero or even negative CO2 emissions. Over the past years, solvent absorption in post-combustion capture technology has shown significant … Lire la suite
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2024 — Storage and utilization of CO2 in ready-mix concrete using CO2-loaded aqueous inorganic solventRésumé
Cement production is a significant contributor to CO2 emissions, prompting the need for innovative approaches to mitigate its environmental impact. This work is focused on developing a workable process that can capture CO2 emitted by cement production and eventually store the captured CO2 in concrete to accelerate concrete curing. Potassium glycinate (K-glycinate), an environmentally friendly aqueous inorganic solvent was employed for this work. Firstly, 6M aqueous K-glycinate solvent prepared from glycine and potassium hydroxide was loaded with CO2 at 60℃ to produce CO2-loaded Kglycinate. Prior to being allowed to cool to room temperature (24±2 ℃), the solvent was diluted (dilution … Lire la suite
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2024 — A commercial pathway for evaluating the performance of a novel amine solvent blend in a mini-pilot plant for carbon captureRésumé
This study investigates the performance of a novel solvent bi-blend, 4M (2:2) AMP:1-(2HE) PRLD, for CO2 capture through absorption and desorption, providing a potential alternative to the conventional 5M Monoethanolamine (MEA). The pathway utilized to assess the performance of the amine bi-blend for commercial application involved conducting carbon capture experiments in a laboratory bench-scale mini-pilot plant. This approach aimed to validate the solvent's performance under conditions that mimic a full-scale commercial industrial CO2 capture plant. The research also addresses the urgent need for more efficient and cost-effective carbon capture solutions to combat increasing greenhouse gas emissions and global warming. Experiments … Lire la suite
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2024 — The role of municipal decision-making in community wellbeing in times of drought: a case study of Canada’s Sunshine Coast Regional DistrictRésumé
Access to clean water is essential for meeting personal, societal, and environmental needs. Climate change is causing more frequent and extreme weather events, leading to less dependable water access and intensified droughts (Intergovernmental Panel on Climate Change, 2023; UNICEF, 2023). This poses significant threats to human health, environmental sustainability, and economic prosperity (Brandes & O’Riordan, 2014; United Nations, 2024). This research explores the role of municipal decision-making during the 2022 drought in the Sunshine Coast Regional District (SCRD), focusing on the impact of water policies on community wellbeing. The study reviews secondary sources, including provincial documents and public reports, and … Lire la suite
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2024 — Implicit and explicit approaches for efficient healthcare schedulingRésumé
Combinatorial optimization problems play a major role in tackling applications such as healthcare, transportation, education, etc. Solving these applications usually involves satisfying a set of hard constraints while optimizing one or more objectives. In this context, exact or approximate methods can be used. While exact methods guarantee the optimality of the solution returned, they often come with an exponential running time as opposed to approximate methods that trade the solution’s quality for a better running time cost. In this context, we tackle the Nurse Scheduling Problem (NSP). The NSP consists in assigning nurses to daily shifts in a given planning … Lire la suite
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2024 — Affect, the fragment, and essayism: How to live the ellipsisRésumé
In this collection of creative non-fiction essays, the author reflects on some of the life experiences that have shaped her. This project is especially attentive to the socio-political context that queer individuals have navigated in Canada in recent decades and is influenced and inspired by the affect theory and writing methodology found in The Hundreds by Lauren Berlant and Kathleen Stewart. Additionally, Brian Dillon’s Essayism: On Form, Feeling, and Non-Fiction has been instrumental to this project. Keywords: literary non-fiction; essay; affect theory; fragment; essayism Lire la suite
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2024 — Intersexual roost site selection by the little brown Myotis in Cypress Hills, SaskatchewanRésumé
Roost structures provide habitats for bats to engage in critical life processes. Identifying, characterizing, and conserving these structures is crucial for individual fitness and survival to mitigate population loss, especially for species such as the little brown Myotis facing threats such as pathogen spread from White-Nose Syndrome. During summer, little brown Myotis rely on roosts to maintain populations through successful reproduction and winter preparation, including rapid development of young and fat accumulation for the winter for all individuals. Summer daytime roosts are particularly critical for these processes to occur effectively. My research aimed to characterize the natural roost selection of … Lire la suite
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2024 — Investigative studies on the stability of an amine blend in the presence of exhaust gas dust (metal oxide) impurities during an amine-based CO2 capture processRésumé
This research work investigates the degradation kinetics of MEA/DMAE bi-blend solvent, with a focus on the influence of temperature, oxygen concentration, and type and amount of exhaust gas metal oxides. Utilizing a combination of experimental approaches and kinetic modeling, this study was used to provide a comprehensive analysis of the factors that affect MEA/DMAE stability and degradation rates. This research commenced first, by determining the solubility of various dominant iron and steel flue gas metal oxides, namely, Fe2O3, ZnO, MnO, and Al2O3. The oxides were dissolved in a 200 ml, 5M, and 0.30 mol CO2/mol bi-blend of MEA/DMAE solvent. In … Lire la suite
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2024 — The hidden triad of cannabis influenceRésumé
Description of the Problem In October 2018, the Government of Canada became the second country in the world to legalize non-medical cannabis, with the goal to promote better health and well-being amongst Canadians. To date, the ways in which young adults in Canada perceive and experience cannabis in this new legal context have been minimally explored and are not well understood. This research contributes important insights into how young adults in Saskatchewan perceive and understand their own health and well-being in relation to cannabis in a context of legal non-medical use. These findings are relevant for future policy and program … Lire la suite
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2024 — Catalyst-aided CO2 capture from exhaust gases of industrial point sources for utilization in cement-based industryRésumé
The utilization of solid-base catalysts to improve CO2 capture in amine-based postcombustion processes represents a significant technological advance. However, addressing both cost and catalytic efficiency remains crucial. Given the inherently expensive nature of amine-based post-combustion, there is an urgent need to explore innovative strategies to alleviate financial burdens. Research has shown that costs can be reduced by eliminating the desorption tower and utilizing enriched solvent directly from the absorber column. Accelerating the capture process via catalyst introduction reduces column height and further cuts costs. The primary focus of our study was to develop an alkaline catalyst to enhance CO2 loading … Lire la suite
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2024 — Microfluidic investigation of cyclic solvent injection: from reservoir-on-the-chip to large scaleRésumé
Cyclic Solvent Injection (CSI) is an effective Enhanced Oil Recovery (EOR) technique with several economic and environmental benefits. Understanding the key mechanisms and developing reliable scaling criteria are required to successfully implement CSI commercially. In this study, CSI was assessed from both microscopic and macroscopic perspectives using experimental and numerical methods. Regarding the experimental studies, the characteristics of the heavy oil/solvent systems used were evaluated through a detailed PVT analysis that included Constant Composition Expansion (CCE) and Differential Liberation (DL) tests. Moreover, this study examined the microscopic behaviour of foamy oil flow on microfluidic platforms, examining the mechanisms involved in … Lire la suite
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2024 — A novel beam management strategy using UE trajectory mappingRésumé
This research presents a novel beam management strategy aimed at optimizing performance in multi-user mobile communication systems, specifically within the framework of 5G mmWave networks. As the demand for reliable and high-speed data transmission increases, traditional beamforming techniques face challenges such as high computational load and inefficiencies in indoor environments. The proposed method leverages user equipment (UE) trajectory information by segmenting user trajectories into equal-length segments, focusing the beam on the centre of each segment to ensure stable and consistent signal coverage. The methodology integrates angular weighting, and dynamic power control to enhance beamforming efficiency. The angular weighting function prioritizes … Lire la suite
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2024 — Being believed: Life history and the healing journey of Indian Residential School survivorsRésumé
This study explored the lives of two Elders who are Indian Residential School Survivors and asked whether they felt that being believed was a component of their healing processes of overcoming violence at Indian Residential School. I used the notion of “being believed” as an experience linked to epistemic injustice (an injustice related to knowledge and power differences). A considerable part of the Survivors’ healing processes centred on their experience with an out-of-court reparations process known as the Independent Assessment Process (IAP), a compensatory component of the Indian Residential Schools Settlement Agreement (IRSSA). The study used life history research. A … Lire la suite
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2024 — Refugee-background students in French immersion programs: Exploring the perspectives and ideologies of educators across the Canadian PrairiesRésumé
French immersion (FI) programs are becoming more culturally and linguistically diverse because of increased global migration to Canada. Researchers have found that multilingual families and learners are often highly motivated to learn both French and English in Canada (Dagenais & Jacquet, 2000; Dagenais & Moore, 2008; Davis et al., 2019). Moreover, multilingual learners tend to develop strong language proficiency in FI programs (Bourgoin & Dicks, 2019; Knouzi & Mady, 2017; Mady, 2015). However, multilingual learners are often excluded from FI programs on the basis of ostensibly low English language abilities (Davis et al., 2021; Mady & Masson, 2018; Roy, 2015). … Lire la suite
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2024 — The prudent visionary: Mackenzie King's calculated leadership for a complex nationRésumé
William Lyon Mackenzie King's enduring political legacy as Canada's longest-serving Prime Minister can be attributed to his ability to balance visionary leadership with political pragmatism. Through a nuanced understanding of Canada's complexity and its historical cleavages, King crafted his vision to align with the nation's readiness for change, while strategically avoiding actions that might threaten national unity. This study delves into King's intricate decision-making process, analyzing key moments throughout his political career, and culminating in the cancelled 1948 trade deal with the United States. By examining King's speeches, diaries, and policies, this research highlights how he carefully and meticulously pursued … Lire la suite
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2024 — From gee to haw (and everything in between): Deconstructing the transspecies pidgin of mushing in northern SaskatchewanRésumé
This multispecies ethnography deconstructs the Gee Haw transspecies pidgin of settler origin mushing in Northern Saskatchewan, Canada. Through a focus on multisensory methodological inquiry, I describe interspecies communication and human perceptions around nonhuman knowledge in the context of sled dog racing. This pidgin is a product of biconstructivism which includes motherese (verbal) words rooted in the English language, vocalisation, short phrases for reinforcement, the use of material devices, and training methodologies to shape a multisensory experience of interspecies collaboration. Dogs are considered nonhuman athletes in this hybrid community. They are bred, cared and trained for their “drive”, speed, endurance and … Lire la suite
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2024 — Mathematical modeling and simulation of the performance of potassium glycinate in CO2 absorption in a packed-bed absorption columnRésumé
The aim of this research undertaking was to develop a mathematical model representation for the capture of CO2 using potassium glycinate as the absorption solvent. To this end, the study was subdivided into three major parts each designed to generate the requisite data for the subsequent stage. The three major parts of the study included the development of industrial process simulation to ascertain the emission data and characteristics of flue gas emanating from different industrial processes. The main processes under study were, Power Generation with particular emphasis on the Combined Cycle Gas Turbine setup, Natural Gas Pre-treatment, where the simulations … Lire la suite
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2024 — Quantification of dissolution and exsolution dynamics of gaseous solvents in crude oil systems under reservoir conditionsRésumé
With a growing demand for fossil fuels, it is of a great importance to improve the oil recovery factor from both conventional and unconventional reservoirs. Among different enhanced oil recovery (EOR) methods, injecting gaseous solvents, including CO2, N2, flue gas, and alkane solvents, is considered as a more effective and efficient method in both light and heavy oil reservoirs, during which mass transfer is the key underlying recovery mechanism. In order to optimize the solvent injection method and achieve a higher oil recovery, it is of fundamental and practical importance to quantify both dissolution and exsolution dynamics of solvents in … Lire la suite
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2024 — Numerical study of dam break flow using shallow water equations with particle method approachRésumé
A significant concern in fluid dynamics is the dam-break phenomenon, which involves the sudden release of water when a dam breaks down. This event is made more complex due to the presence of obstructions, such as both natural and artificial elements, which can alter the flow of the water. The Moving Particle Semi-Implicit (MPS) method is a numerical method used in Computational Fluid Dynamics (CFD), which combines the advantages of semi-implicit and particle methods. The method has been developed to help simulate water flow behavior after a dam-break. This method breaks the domain into pieces referred to as particles, each … Lire la suite
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2024 — Cliques in block graphs of designs and orthogonal arraysRésumé
The Erdos-Ko-Rado [EKR] Theorem for intersecting families is a fundamental result in combinatorics, particularly in extremal set theory. This theorem not only establishes an upper bound on the size of the largest intersecting family but also characterizes the families that attain this bound—–these are known as maximal canonically intersecting. Recent work by Balogh, Das, Delcourt, Liu, and Sharifzadeh delves into intersecting families across permutations, hypergraphs, and vector spaces, revealing that nearly all such families within these structures are a subset of a maximal canonically intersecting family [1]. Building on these insights, this thesis extends the examination to block graphs of … Lire la suite
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2024 — Absorption capacity of carbon dioxide in aqueous solution of 1,2-bis(3-aminopropylamino) ethane and Dytek EP diamine: Experimental measurements and simulation with the E-NRTL modelRésumé
The increasing threat of climate change has elevated the importance of carbon dioxide (CO2) capture technologies. This thesis explores the solubility of CO2 on aqueous solution of two novel amines 1,2-Bis(3-AminoPropylamino) Ethane and Dytek EP diamine at two different temperatures of 313.15 K and 333.15 K, and two different concentrations of 10 wt% and 30 wt%. These amines were selected for their potential to enhance CO2 absorption efficiency and reduce energy consumption in carbon capture and storage (CCS) processes to provide valuable data for developing more efficient CO2 capture systems. Utilizing the Electrolyte Non-Random Two-Liquid (eNRTL) model for the liquid … Lire la suite
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2024 — Deep transfer learning-based DDoS attack detection in 5G and beyond networksRésumé
Network slicing is a crucial technology for enabling 5G and beyond mobile networks which support a wide range of new services such as Enhanced Mobile Broadband (eMBB), Ultra-Reliable and Low Latency Communications (URLLC), and Massive Machine-Type Communications (mMTC) on the same physical infrastructure. However, this technology also makes networks more vulnerable to cyber threats, especially Distributed Denial-of-Service (DDoS) attacks. These kinds of attacks can degrade service quality by overwhelming essential network functions necessary for the seamless operation of network slices. To address this issue, an Intrusion Detection System (IDS) is needed to protect against various DDoS attacks. A promising solution … Lire la suite
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2024 — Culturally relevant/responsive pedagogy in an EFL context: College English education in ChinaRésumé
In China, College English, a core course in many university-level foreign language education, is a requirement for most non-English majors at the undergraduate level in China. In this doctoral research study, Ladson Billings’ (2014) culturally relevant pedagogy and Gay’s (2010) culturally responsive teaching was adapted for use in a college English course to develop student’s English language ability while enhancing intercultural awareness and competence. Guided by sociocultural theory (Vygotsky, 1986), this study employed action research methodology (Lewin, 1946; Stringer, 2014). The study took place at a comprehensive university in southwestern China. Participants consisted of 39 first-year students enrolled in the … Lire la suite
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2024 — Rooted in place: The intersection of healing and learning within Indigenous mental healthRésumé
This dissertation offers a comparative exploration of the role of place in influencing healing and learning within Indigenous contexts, contributing to the expanding literature on place as a determinant of health. Through an in-depth examination of three distinct sites — Prairie Sky School, the nato' we ho win program, and Queen City Wellness Pharmacy — this research provides a unique lens through which to view the process of decolonization and highlights place as an active determinant of well-being. Viewed through the Decolonized Theory of Place, this research unveils the intricate interplay between place and well-being and provides a holistic framework … Lire la suite
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2024 — Forecasting CO₂ emissions and identifying key CCUS factors for achieving net-zero targets in the North American cement, iron, and steel industriesRésumé
Emissions of pollutants and their consequences on the atmosphere have received special attention from international organizations in recent years due to the climate crisis previewed in the next decades. In this regard, Carbon Dioxide (CO2) emissions produced in industrial sectors is one of the most concerning compounds because of its impact on global warming and climate change. International organizations have emphasized the necessity of creating a plan to gradually reduce the concentration of this pollutant in the atmosphere. This study employs multi-objective mathematical models combined with machine learning algorithms to predict CO₂ emission trends and evaluate mitigation techniques on Cement … Lire la suite
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2024 — Statistical methods and analysis with real-life dataRésumé
The goal of this research contains three major parts. We start with finding out the parameter uncertainty of cost and utility parameters in economic evaluations. There is a framework providing some general guidance to interpret the levels of parameter uncertainty of the probabilistic analysis in economic evaluations. Given that this framework may not fully address underlying causes for the uncertainty, we sought to extend it for two specific scenarios. We provide the mathematical interpretations and conducted simulation studies for two scenarios. We further discussed the implications of our findings for the economic modelling. In addition to qualitative categorization of uncertainty … Lire la suite
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2024 — Enseigner entre les lignes en Saskatchewan française (1905-1968)Résumé
Based on an analysis of historical school textbooks, exams and other educational resources, this study aims to identify the nature of linguistic representations transposed into the school materials used in French-speaking Saskatchewan between the creation of the province in 1905 and the advent of immersions schools in 1968. The threat of anglicism and English (in general), the “soft” pronunciation of French Canadians, the natural interweaving of language and history and the awareness that there is a formal level of language to adopt were concerns at the time. The line between the imitation of a distinguished linguistic model inspired by Quebec’s … Lire la suite
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2024 — Classifying men who perpetrate intimate partner violence: A 50-year systematic review and a new typology applicable to case managementRésumé
This dissertation includes two studies: a systematic review of typologies of perpetrators of intimate partner violence (IPV) and a new typology of men who perpetrated IPV created using assessment data collected with the Service Planning Instrument (SPIn™). The systematic review included 177 typologies contained in 201 articles published between 1974 and 2024. Typologies in the review comprised: 1) family-only and generally violent; 2) family-only, generally violent, and borderline/dysphoric; 3) family-only, generally violent, low-level antisocial, and borderline/dysphoric; 4) severity and frequency of violence; 5) reactive and instrumental, 6) situational couple violence and coercive control; 7) personality types; 8) other typologies (e.g., … Lire la suite
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2024 — Community ecology of migratory bats in a northern sky islandRésumé
Animal migrations are often motivated by the opportunity to exploit seasonal abundances of resources, a phenomenon particularly pronounced for species migrating to higher latitudes where seasonality is more extreme. Bats are the only mammalian order to have evolved flight, and three North American migratory bats are the long-distance migrating hoary (Lasiurus cinereus) and silver-haired bats (Lasionycteris noctivagans), and the regionally migrating little-brown Myotis bats (Myotis lucifugus). I describe a highly seasonal community of migratory bats in a northern “sky island” within the Cypress Hills of southern Saskatchewan, Canada, focusing on abundance trends, foraging behavior, niche ecology, and ecophysiology. By collecting … Lire la suite
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2024 — Development of a pellet extruder with co-axial nozzle for 3D printing using inflatable extrudatesRésumé
Additive manufacturing (AM) has emerged as one of the core components of the fourth industrial revolution, Industry 4.0. Among others, the extrusion AM (EAM) of thermoplastic materials has been named as the most widely adopted technology. Fused filament fabrication (FFF) relies on the commercial availability of expensive filaments; hence pellet extruder-based EAM techniques are desired. Large-format EAM systems would benefit from the ability to print lightweight objects with less materials and lower power consumption which can be possible by using hollow extrudates rather than solid extrudates to print objects. In this work, we designed a custom extruder head and developed … Lire la suite
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2024 — Identifying the support needs of the informal caregivers of long-term care residents: The potential benefits of a mobile applicationRésumé
Informal caregivers of older adults who reside in long-term care facilities play a crucial role in ensuring the needs of the resident are being met. Such institutional informal caregivers (IICs), however, are at a greater risk of experiencing subjective burden and loneliness. They also tend to report lower levels of perceived social support than their non-caregiver counterparts. Despite web-based messaging services as well as virtual and in-person informal caregiver support groups showing promise in reducing subjective burden and loneliness, barriers such as a lack of transportation or required web services, caregiver busyness, and competing responsibilities of the caregiver often prevent … Lire la suite
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2024 — Biases in adults’ truth and lie judgments of Black children’s statements: An examination of anti-Black attitudes and unawareness of racial inequalitiesRésumé
A growing body of literature has sought to examine factors that impede adults’ abilities to detect children’s lies. The current study extends previous research that found that adults demonstrate a racial bias when evaluating statements made by children and that these judgements are related to their motivations to respond without prejudice. The goal of the current study was to explore whether adults’ veracity judgments of Black and White children’s statements differ as a function of adults’ anti-Black attitudes and their unawareness of racial privilege, institutional discrimination, and racial issues within society. Participants reviewed fictitious transcripts of a child who denied … Lire la suite
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2024 — Geochemical and petrographic studies of accessory minerals in the Athabasca Basin: implications for unconformity-related uranium mineralizationRésumé
The unconformity-related uranium (URU) deposits in the Athabasca Basin rank among the world's largest and highest-grade U deposits, many of which are also characterized by enrichment in rare earth elements (REE). The source of U and REE for the mineralization, whether from the basin or the basement, is a subject of scientific debate. This study focuses on the petrographic features and chemical compositions of detrital and diagenetic accessory minerals within the Athabasca Basin sandstones to evaluate the potential contributions of the sediments in the basin to the U and REE budget in the mineralization systems. Employing various analytical methods including … Lire la suite
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2024 — Home range, nest-site, and perch selection of great horned owls (Bubo virginianus) in a human-modified grasslandRésumé
Temperate grasslands have undergone extensive anthropogenic alterations, contributing to an increased abundance of Great Horned Owls (Bubo virginianus) in these areas. Great Horned Owls now nest within remnants of native grasslands, where they exert predation pressure on at-risk species, such as the Greater Sage-grouse (Centrocercus urophasianus). My research aims to understand Great Horned Owl habitat selection to inform conservation efforts protecting vulnerable grassland species from owl predation by: (1) identifying key habitat features influencing nest site selection, (2) evaluating the impact of vegetation and anthropogenic structures on movement patterns and perch selection, and (3) providing tangible targets for habitat management … Lire la suite
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2024 — Source nutrients identification and management for Lake Diefenbaker irrigation canalsRésumé
Lake Diefenbaker Irrigation Canals are an essential part of the agriculture industry in Saskatchewan, Canada, as they provide irrigated water to the downstream farmers. However, filamentous algal blooms occur throughout canals every summer. These algae are not toxic but a nuisance. They block water intakes within the irrigation canals. At present, the approach for controlling algal blooms in Lake Diefenbaker’s M1 canal is manual cleaning of intake screens and periodic application of the algaecide Magnacide H, which is expensive (approximately one million dollars per year) and may be detrimental to the aquatic ecosystem and canal water quality if it is … Lire la suite
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2024 — Design, development, and control of an off-road hybrid electric vehicle power systemRésumé
With global warming and climate change threatening the planet, the auto industry is transitioning from conventional internal combustion engines to electrical power trains. Globally, electric vehicles and hybrid electric vehicles are becoming popular with 10 million cars sold in 2022. Electrification is not limited to the personal cars and public transport, but includes applications in transportation, mining, and military. The power system and battery pack are the main components of electric and hybrid electric vehicles. Battery pack capacity and performance affect the overall mileage. This thesis models and sizes the battery pack based on the mechanical and electrical specifications of … Lire la suite
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2024 — An experimental study of police interactions with persons with mental illness using simulation technologyRésumé
Mass deinstitutionalization and repeated reports of the use of force during police responses to person(s) with mental illness (PMI) have resulted in public and political debates about police mistreatment of PMI and motivated requests for police reform. As police interactions with PMI continue to increase it is important to understand police decision making, how officers perceive and interact with PMI, and the role of policing during mental health crises. Research examining police records or police-civilian interactions in the field has produced mixed results in the rates of use of force during interactions with PMI. The current study used a laboratory … Lire la suite