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2014 — AHP-Based Methodology for a Complex Decision Support in Extreme ProgrammingRésumé
Extreme Programming (XP) is one of the most successful methods in software development. It offers a set of practices designed to work together in order to provide value to the customer. The XP process emphasizes simplicity, feedback, and encouragement among team members. During the XP lifecycle, developers and customers regularly encounter situations in which they need to make decisions or evaluate factors that will affect the development process and team productivity. The Analytic Hierarchy Process (AHP) can analyze complex decisions and help accomplish XP values and fulfill team needs. This research describes a framework for the application of AHP to … Lire la suite
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2018 — A Techno-Economic Study of the Reduction of Greenhouse Gas Emissions through Biomass Co-Firing: A Case Study of Saskatchewan Lignite-Fired Power PlantsRésumé
This research investigates the use of biomass co-firing to replace a portion of the coal used in coal power plants. The objective of this application is to reduce the greenhouse gas (GHG emissions) originating from coal-fired power plants. The study consists of two main components; a technical model, and an economic analysis. The technical study consists of three sub-models using two different simulators. Aspen Plus is used to develop a model capable of simulating coal combustion. This model is then used to co-fire wood chips with coal at three different co-firing rates; 5%, 10%, and 20% wood chips with coal. … Lire la suite
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2019 — Machine Learning for Shill Bidding Classification ModelsRésumé
As online auctions become more prevalent worldwide, they are increasingly targeted by various types of cyber-crimes. In-auction fraud, such as shill bidding (SB), is considered the most challenging to detect. SB has been recognized as the predominant form of online auction fraud. It is di cult to identify due to its similarity to normal bidding behavior. The complexity of nding and de ning SB patterns makes it resistant to discovery. Also, the unavailability of SB datasets that are based on actual e-auctions makes the development of SB detection and classi cation models challenging. Therefore, the prerequisite task that is necessary … Lire la suite
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2016 — Subproduct Systems of Quasi-Free Quantum Dynamical SemigroupsRésumé
In this thesis, we construct a class of quantum dynamical semigroups, called quasifree quantum dynamical semigroups, of the von Neumann algebra generated by an arbitrary Weyl system, with respect to some compatible families of quasi-measures and C0-semigroups. We then describe in concrete terms their associated subproduct systems, in the case of irreducible Weyl systems. Lire la suite
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2012 — Geological Effects and Petrophysical Flow Unit Model for the Middle Bakken Member, South-East SaskatchewanRésumé
The Devonian-Mississippian Bakken formation is a relatively thin heterogeneous unit that stretches across the subsurface of the Williston Basin in North Dakota, Montana, Saskatchewan, and Manitoba. In terms of oil and gas exploration, the unit is undoubtedly one of the most important and ranks high on the scale as compared to other oil producing fields. It represents a single petroleum system that consists of a heterogeneous Middle Siltstone and Sandstone Member layered between two black organic rich shale members. The Sandstone Member represents the major potential reservoir while the black carbonaceous shale acts as the source and the cap rock … Lire la suite
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2018 — Blinded by the Light: Commissioning of the Hall C SHMS Heavy Gas Cherenkov DetectorRésumé
The University of Regina built a heavy gas Cherenkov (HGC) detector for use at the Thomas Jefferson National Accelerator Facility (JLab) as it enters a new era of 12 GeV experiments. This detector will play an important role in The University of Regina built a heavy gas Cherenkov (HGC) detector for use at the Thomas Jefferson National Accelerator Facility (JLab) as it enters a new era of 12 GeV experiments. This detector will play an important role in π/K separation between 3 - 11 GeV/c in experimental Hall C and is housed in the Super High Momentum Spectrometer (SHMS). Recently, … 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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2023 — Publishing linked open data from spreadsheetsRésumé
The World Wide Web (WWW), as defined by the World Wide Web Consortium (W3C), is “the universe of network-accessible information, the embodiment of human knowledge”1. With development over the years, the global web of linked documents has become the global web of linked data, which is popularly known as the “semantic web”. The semantic web is now an established topic of research but there remain many unanswered questions. Data that are linked and open facilitate discovery and reuse. Likewise, vocabularies used to describe the semantic relationships amongst linked and open data facilitate discovery and reuse. Yet, it is not always … Lire la suite
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2021 — Role of Nudix-Hydrolase ASMTL in Modulating Mitochondrial Biogenesis of Cancer CellsRésumé
Cancer cells have enhanced DNA biosynthesis, rendering them susceptible to nucleotide modifications that enter the cellular nucleotide pool during repair or DNA degradation. These modified nucleotides can then be incorporated into newly synthesized DNA, resulting in random mutations or, when overwhelming into DNA damage, culminating into apoptosis, which is the desired effect of anti-cancer chemotherapy. Human cells contain nucleotide sanitation enzymes like ASMTL, which prevent incorporating the non-canonical nucleotides into newly synthesized DNA by removing them from the nucleotide pool, thereby relieving cancer cells from proliferative stress-induced mutations and apoptosis, representing an attractive target for anti-cancer chemotherapy. To identify ASMTL … Lire la suite
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2016 — Use of the Pain Assessment Checklist for Seniors with Limited Ability to Communicate-II (Pacslac-II) by People Who Are Not Health ProfessionalsRésumé
Pain is prevalent among older adults but it is often underestimated and undertreated, especially in older people with dementia. Patients with severe dementia are likely to suffer from untreated pain because of their limited ability to report it. Observational methods of pain assessment, such as the Pain Assessment Checklist for Seniors with Limited Ability to Communicate-II (PACSLAC-II; Chan, Hadjistavropoulos, Williams, & Lints-Martindale, 2014), have been shown to be valid indicators of pain in this population when completed by health professionals or other trained personnel (Fuchs-Lacelle, Hadjistavropoulos, & Lix, 2008; Zwakhalen, Hamers, Abu-Saad, & Berger, 2006). With growing demands, informal caregivers … Lire la suite
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2021 — Amine and Catalyst Stability Studies in the Catalyst-Aided CO2 Capture ProcessRésumé
The application of sol id base and sol id acid catalysts to improve CO2 capture has been one of the most notable technological advancements in amine-based post -combust ion capture. Despite the inherent benefits of the catalysts, the amine solvent is st i l l prone to degradation, which is a major operational problem associated with the capture process. The nature of solvent degradation in catalyst -aided CO2 capture has not been reported before, and thus, the effect of catalyst on solvent or vice versa is unknown. This work evaluates the effect of catalyst on solvent degradation and vice versa … Lire la suite
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2013 — Physiochemical and Biological Behaviors of Organic Contaminants in Multi-Phase Media Under Enhanced Treatment ConditionsRésumé
The rapid increase of anthropogenic activities has led to the ubiquitous presence of organic contaminants. There is an urgent need for understanding the fate and behavior of organic contaminants in the environment. In this dissertation research, the physiochemical and biological behaviors of organic contaminants in multi-phase media have been investigated. Considerable research efforts have been made in characterizing the transport of polycyclic aromatic hydrocarbons (PAHs) at solid-liquid interface, as well as exploring the remediation of pollutants through solvent extraction and composting. The effects of short-chain organic acids (SCOAs) on the behaviors of PAHs in soil-water system have been systemically investigated. … 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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2012 — Zooplankton as Indicators to Detect and Track the Degree of Acid-Stress to Lake EcosystemsRésumé
It is critical to identify and use appropriate ecological indicators to detect, monitor and assess the impacts of environmental stressors on natural systems in order to effectively legislate, protect and restore ecosystems. Based on strong and predictable community responses to acid-stress, crustacean zooplankton has the potential to be a crucial indicator of acidification in freshwater ecosystems. This thesis is based on evaluating the potential of zooplankton as indicators to detect and track the degree of impact of recent acid deposition on Canadian Shield lakes in north-west parts Saskatchewan. These systems may now be at risk as the area is downwind … Lire la suite
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2014 — The Influence of Hardiness Levels on the Rate of Return to Work For Those who Have Sustained a Back InjuryRésumé
Existentialists suggest that our responsibility is to discover our own meaning in life which can be recognized through creative works, experiences and relationships, and attitudinal acknowledgement and/or choice of one’s current circumstances (Frankl, 2006). It is through the will to meaning, the primary motivational drive noted by Frankl, that humans are able to transcend and live a fulfilled life despite perceptions of unavoidable sufferings. Therefore, existential courage/hardiness helps one to engage in coping with problems rather than denying or avoiding them. Furthermore, it also relies on socially supportive interactions with others and the capacity to learn from this perpetual process … Lire la suite
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2017 — How Climate Change Could Affect The Water Supply of Potash of Potash Solution Mining in Southern SaskatchewanRésumé
Potash mining is one of the most significant industries in Canada and an important part of Saskatchewan’s economy, as potash is a leading commodity by the value of production. During the last decade, there has been an increased number of new potash mine developments and expansion projects within the province. A new solution mine started its operation in May 2017 and five more mines are either under construction, or will be by 2020. All mines but one will utilize a solution technique for ore extraction, and solution potash mining is heavily reliant upon water availability. Currently there is a sufficient … 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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2020 — "Suck it up, Buttercup": The Role of Gender in the Mental Health of Police OfficersRésumé
Police officers are at higher risk for several different mental disorders relative to the general population, arguably due to the nature of their work. Women police officers report elevated mental disorders symptoms when compared to men police officers. Empirical research on which factors may be involved in the gender differences in police mental health is sparse and seldom gender balanced. The current explanatory sequential mixed methods research examined how the contrast in the experiences of men and women police officers may influence gender differences in mental disorder prevalence. Among surveyed Canadian police officers (1377; 36% women), women reported elevated symptoms … Lire la suite
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2022 — Exploring the citizen engagement metaverse: Testing virtual reality for citizen feedback on public space design optionsRésumé
Some governments have begun to experiment with using technology to support citizen and stakeholder engagement in designing public spaces, moving beyond traditional forms such as printed documents and design charrettes structured around physical objects to take advantage of virtual platforms for sharing information and gathering citizen feedback. With the advance and dispersion of technology, the public can now contribute to the planning and design of public spaces through digital platforms such as online surveys, social media, interactive maps, and touchscreen kiosks. More recently, advances like virtual reality (VR) can now be used to give the public a better understanding of … Lire la suite
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2015 — Studies on Syntheses of 1-Azaspirocycles, 2,6-Disubstituted 3-Piperidinols and cls-DecahydroquinolinesRésumé
Pyrrolidines and piperidines bearing a nitrogen-substituted quaternary stereocenter are commonly encountered structural motifs in many naturally occurring alkaloids, and therefore development of methods for their synthesis are important. The Rh(II)-catalyzed intramolecular tertiary C-H insertion reaction of 5-(-diazoacetoxy)piperidin-2-ones and 3-(-diazoacetoxy)pyrrolidines carrying C6 and C2 alkyl substituents, respectively, was investigated for the formation of bicyclic lactones bearing a nitrogen-substituted quaternary stereocenter. Both Rh(II)-carboxylate and Rh(II)-carboxamidate catalysts with varying electronic and steric properties were examined; however, these reactions usually resulted in the formation of complex mixture of products and the desired tertiary CH insertion products were not formed. The steric interactions encountered by … Lire la suite
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2023 — Development of bio-composite filaments for drinking straw applicationRésumé
Lifestyle shifts and the pursuit of comfort have led to an increased reliance on straws for consuming beverages. This trend has contributed to the growing environmental concern related to plastic waste. Plastic straws and stirrers accounted for ~7% of the debris found in the ocean, with most being non-recyclable. This detrimental environmental impact has led to many countries banning single use plastics, which includes straws, stirrers and cutlery. The bans on single-use plastics have prompted initiatives to identify suitable alternatives, thereby creating new market opportunities for the development of biodegradable materials. This study investigates creating bio-composite material from locally available … Lire la suite
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2012 — Heterogeneous and Monolithic Catalyst Development for the Biodiesel Production Process & Evaluation of Static Mixers for the Esterification ProcessRésumé
In the present biodiesel production process, sodium hydroxide and sulphuric acid are the conventional homogeneous catalysts used, in spite of their drawbacks, such as soap formation with high free fatty acid (FFA) feedstocks, substantial wastewater generation, issues with the downstream separation process, and corrosion of process equipment. Both of the catalysts mentioned above are difficult to regenerate and involve expensive treatments. Heterogeneous catalysts represent a very attractive alternative for overcoming technological and operational barriers associated with the use of homogeneous catalysts in the biodiesel production industry. Heterogeneous catalysts can be designed to provide high performance stability and durability, and they … Lire la suite
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2023 — CO2 emissions reduction through catalytic production & use of fuels derived from biomassRésumé
This study focused on the preparation of environmentally friendly heterogenous catalyst from biomass specifically waste egg shells, cow bones and fish scales for use in the production of biodiesel from waste cooking oil (WCO) which is also a biomass-based waste feedstock collected from households that will be an alternative fuel source and contribute to reducing CO2 emissions into the environment as well as the cost of biodiesel production To begin, the biodiesel feedstock properties needed to be checked for its suitability in making fuel because the feedstock properties were going to impart the properties of biodiesel. The first property of … Lire la suite
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2018 — Supervised Classification of Imbalanced Bidding Fraud DataRésumé
Online auctions have become one of the most convenient ways to commit fraud since a huge amount of money is being invested everyday by thousands of customers. Hence, online auctions are vulnerable to several types of fraud. Shill Bidding (SB), a predominant auction fraud, is the toughest to identify due to its resemblance to the normal bidding behavior. An innocent bidder can easily be cheated and lose money if shill bidders are not identified. Our goal is to devise a SB classification model, which is able to efficiently differentiate between legitimate bidders and shill bidders. For this thesis, we employ … Lire la suite
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2022 — Clustering and dimensionality reduction for time-series service monitoring dataRésumé
Service monitoring applications allow customers to measure the performance, availability, and resolve application issues before they affect users. Since service monitoring applications continuously produce data to monitor their availability, therefore, high dimensionality, unlabeled data and changing data distribution are all prevalent. In this thesis, we efficiently address these three issues using the constructed service monitoring dataset. Higher dimensionality means higher computational cost to perform training and often leads to over-fitting while l earning a model. Furthermore, in the presence of high dimensionality, data are highly correlated resulting in insignificant and irrelevant features. These features have less impact on the prediction. … Lire la suite
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2023 — Design and development of a Virtual Window with industrial and civil applicationsRésumé
The recent advances in deep learning algorithms and computer vision applications have prompted research into their application in various problem domains, including industrial and civil applications. This area o ers a unique opportunity to develop applications that were not previously Possible without computer vision technology. One such application is the replacement of conventional windows with digital smart windows that provide end-users with access to natural scenery. This technology has potential uses in military contexts and meetings, among others. This research focuses on a novel approach to implementing this technology in industrial settings using a real-time face detection algorithm to display … Lire la suite
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2023 — Parenting and social media: Exploring parental understanding of adolescent social media useRésumé
Social media (SM) has become an integral part of adolescent socialization. SM is widely accessible through advanced technology with resulting demands for constant connection. Existing research has focused on the negative aspects of SM while highlighting the need for an understanding of how to mitigate risk factors associated with adolescent SM use. Parental mediation strategies have been noted in existing research as an important factor in lessening risks or negative outcomes related to adolescent SM use. Using interpretive phenomenology analysis (IPA), parental understanding of adolescent SM use was explored to gain insight into how parents understand and experience mediation strategies … Lire la suite
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2019 — “So What Happened to You?” A Pilot Study Examing the Impact of Ableist MicroaggressionsRésumé
Microaggression involves seemingly innocent, subtle, and brief discriminatory behavior that can have a detrimental impact due to its omnipresent perpetration against members of marginalized groups. Microaggressions perpetrated against individuals with disabilities are often rooted in ableism. Ableism refers to the belief that anyone who does not fit into able-bodied norms is not worthy of equal treatment. Further, ableism perpetrated by institutions creates an environment in which institutional betrayal is fostered. Institutional betrayal has been shown to exacerbate the negative effects of trauma or discrimination. The present study was designed to investigate the immediate impact of an ableist microaggression on individuals … Lire la suite
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2023 — Examining the impact of gender-based microagressions and institutional betrayal on women holding multiple marginalized statusesRésumé
Microaggression refers to subtle, often indirect, discriminatory behavior committed against members of marginalized groups. The subtle nature of microaggressions can often make them seem innocuous, however, they can have a determinantal impact on those who experience them. Women are a marginalized group who experience microaggressions on the basis of gender, rooted in sexism. Further, many women hold multiple marginalized statuses based on their race, sexuality, disability, age, religion, body size, or socioeconomic status. As such, they may also experience microaggressions based on these intersectional identities. While microaggressions in themselves have been shown to be negatively related to mental health, it … Lire la suite