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2020 — Genomics-Based Characterization of the Microbial Community and Plasmidome of the Regina Wastewater Treatment Facility and the Surrounding Aquatic EnvironmentRésumé
Wastewater produced from human activity contains high concentrations of contaminants like ammonia, pathogens, and organic compounds with high biological oxygen demand; all of which must be remediated with proper wastewater treatment prior to discharge into the environment. Most large-scale wastewater treatment plants (WWTPs) remove contaminants from wastewater using the activated sludge process, wherein wastewater is mixed with a flocculent slurry of microorganisms that use these contaminants for the production of energy or increasing microbial biomass. The activated sludge environment is a complex microbial ecosystem, containing stable populations of organisms adapted to activated sludge, as well as transient environmental and human … Lire la suite
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2020 — Interactive Image Retrieval, Organization, and Exploration Within TwitterRésumé
Most social media services allow users to share photos. Specifically, with the use of mobile phones, social media users are now able to share photos easily which is leading to the creation of a huge amount of image content. It is difficult to search for specific images within large image collections. Images have textual content associated with them. Users can search for images with textual queries, where the search is performed only on the textual content of the social media post. However, searching within textual information is not sufficient for retrieving images whose visual content is relevant to the query. … Lire la suite
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2020 — Performance of Bootstrap Confidence Region For Binomial Distribution With Unknown Parameters p and mRésumé
The goal of this research is to find out the Performance of the bootstrap confidence region of a binomial distribution with unknown parameters. The research is designed as follow: The first step is to estimate unknown parameters m and p from binomial distribution. In my case, I focus on method of moment to estimate. Since these estimators do not have moments of all orders, I cannot obtain the mean, variance, and covariance for these estimators. Thus, the Delta Method is used to derive the asymptotic normality of the joint distribution of the Method of Moments estimators. After finding the estimators … Lire la suite
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2020 — Language Learning and Social Identity Development: A Narrative Study of Syrian Refugees in CanadaRésumé
The world is witnessing the highest levels of displacement on record. The United Nations estimates that every minute, 24 people around the world are forced to flee their homes. Ongoing wars and conflicts in many parts of the world have forced millions of individuals to leave their countries and seek safety and protection through different resettlement programs around the world. In response to the current Syrian crisis, the Government of Canada has accepted more than 40,000 Syrian refugees since November 2015. Still, because of their limited language abilities, most of these individuals have been forced to “start over”. This includes … Lire la suite
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2020 — ‘Rallying’ for Change: Examining the Engagement of Pre-Adolescents, Schools, A Community Partnerships Through Triple-Ball Volleyball Using and Appreciative LensRésumé
Elementary schools are of critical importance in our society. While their legislated mandate is to teach curricular outcomes to the youth who attend, these institutions are also being asked to do much more. Society continues to rely on schools to provide many student and community needs, particularly where physical activities, athletic achievement, and social development are concerned (Larsen et al., 2013). Community leaders and youth advocates are asking the publicly-funded school system to help ensure that youth receive the activity and education that they need to remain healthy in the long-term (PHE Canada, 2013). This study was done by creating … Lire la suite
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2020 — Disrupting Euro-Western Onto-Epistemologies (Re)Imagining Possibilities for Mathematics Education Through/With Indigenous Knowledges and Complex ConversationsRésumé
This thesis is a representation of my research interests and explorations in interfacing Indigenous knowledges and mathematics education. This focus arose near the onset of my doctoral coursework as experiences of tension/contradiction occurred that were disruptive to my onto-epistemologies, especially to my ways of knowing and being in relation to mathematics education. These disruptions eventually led me to want to work at (re)imagining my mathematics learning/teaching practices through/with processes that might be recognized as decolonizing. My review of related literature increased my awareness of the possibility that the discipline of mathematics was potentially misframed. I was especially drawn to discussions … Lire la suite
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2020 — “Curiously Alive and Vital”: D.H. Lawrence, Gender and the BodyRésumé
In this thesis, I examine the importance of the body to identity and fulfilment in three of D.H. Lawrence’s best-known novels. In Lady Chatterley’s Lover, The Rainbow, and Women in Love, each written in the early twentieth century before Lawrence’s death in 1930, Lawrence represents the bodies of his characters as equally as integral to their identities as their minds. Also prominent in these works are Lawrence’s criticisms of modern technology, as well as of the privileging of the mind and mental processes that this technology encourages. Lawrence offers the “life of the body” as an alternative to mental, mechanical … Lire la suite
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2020 — Assessment of the influence of Nonstationary Climate on Extreme Hydrology of Southwestern CanadaRésumé
The demand for water supplies across southwestern Canada has increased substantially over the past century with growing population and economic activities. At the same time, the region’s resilience to the impacts of hydrological extremes, floods and droughts is challenged by the increasing frequency of these extreme events. In addition, increased winter temperatures over the past century have led to declines in winter snowpack and caused earlier snowmelt, leading in some years to a substantial shortage of water during late summer and fall seasons. This calls for a better understanding of the flood and drought characteristics in addition to the information … Lire la suite
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2020 — Transitioning from Curative Care to End-of-Live Care in the Acute Care Hospital: A Hermeneutical Phenomenological StudyRésumé
This study examined the experiences of members of multidisciplinary teams in two urban acute hospitals when transitioning from curative care to end-of-life care with a patient. With so many people continuing to die in acute care hospital wards (Canadian Hospice Palliative Care Association, 2016; Cavaye & Watts, 2012; Grande, 2009), it is important to understand how the members of the multidisciplinary team in hospitals experience this transition, and to recognize what is being done well and what needs to be improved upon in this transition. The study was undertaken with a hermeneutical phenomenological research approach. Participants interviewed in the study … Lire la suite
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2020 — Development and Evaluation of the Sequential Clustering Technique for the Faster Study of the Human MicrobiomeRésumé
The human microbiome is the set of microbial communities that live on and in the human body. These microbes can play a large role in human health and disease, and bioinformatic methods to study these relationships are becoming increasingly important as the amount of human microbiome data increases. Most methods are slow, which makes them difficult to use for the analysis of large, multi-project datasets. We propose a Sequential Clustering (SC) technique using the software VSEARCH that is able to cluster all reads across large sample sets in a sequential manner. When applied, the SC method was able to identify … Lire la suite
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2020 — Investigation of Groundwater- Surface-Water Interactions – Application to Leech Lake Aquifer,Résumé
Looking into the resources essential for socio-economic development, water resources are inevitable. Food, feed, and shelter requirements are growing rapidly with the increase in the population of our world and on the other hand water resources are becoming scarcer to fulfill these demands. Therefore, it is highly required to manage these resources in the best possible way and to contribute towards their sustainability.Water can play a key facilitating role to ensure sustainable development if both groundwater and surface water can be managed efficiently and equitably through the application of fully integrated systems. This study represents an integrated methodology by using … Lire la suite
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2020 — Thermal Tolerances of an Endemic Hot Spring Snail Physella wrighti Te and Clarke (Mollusca: Physidae)Résumé
Physella wrighti (Te and Clarke, 1985) is an Endangered freshwater snail endemic to the Liard Hot Springs in northern British Columbia. It inhabits water temperatures from 23.5oC to 36oC and is active year-round. Despite its conservation status, little else is known about this species. To advance our understanding of P. wrighti in its environment, I investigated how water temperature affects aspects of its life history in a lab setting. I first investigated if P. wrighti would be more active in the scotophase versus the photophase at 30oC and observed no differences in activity level. I tested if P. wrighti had … Lire la suite
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2020 — Evaluation of Liquid and Supercritical Carbon Dioxide Fracturing on Tight Sandstone Oil ReservoirsRésumé
Fracturing technology is an indispensable part in the development of low permeability reservoirs. In order to solve the problems of water consumption and formation damage, carbon dioxide (CO2) fracturing is treated as an alternative formation transformation and production enhancement technology for water-based fracturing. Several researches on fracturing mechanism and advantages of both liquid carbon dioxide (L-CO2) and supercritical carbon dioxide (Sc-CO2) mainly focused on the comparison and analysis of fracturing effects between different fracturing fluids, without evaluating the influence of fluid injection rate and core length for the effects of fracturing. Hence, as the important parameters in fracturing scheme design, … Lire la suite
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2020 — Phase Behaviour of Solvent(s)/Water/Heavy Oil Systems at High Pressures and Elevated Temperatures Based on Isenthalpic FlashRésumé
The hybrid steam-solvent injection processes have been proved to be a promising technique for enhancing heavy oil recovery as they combine the advantages from both heat transfer of steam and mass transfer of solvent(s) to further reduce the viscosity of heavy oil. Multiphase isenthalpic flash calculation is required in compositional simulations of the aforementioned processes, which involve vapour, oleic, and aqueous three-phases since water is inevitably associated with steam injection processes. As such, it is of fundamental and pragmatic importance to accurately quantify the phase behaviour of solvent(s)/water/heavy oil systems at high pressures and elevated temperatures by use of isenthalpic … Lire la suite
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2020 — A Qualitative Analysis of Facebook Micro-Celebrity: The Case of Qandeel BalochRésumé
This thesis looks at how Facebook (FB) facilitates the transformation of micro-celebrities such as Pakistani social media micro-celebrity Qandeel Baloch, into embodiments of notoriety, and examines the mechanism through which the newly acquired fame destroys them. Predicated on the shifts and changes in celebrity culture in general, the microcelebrity model constructed in this thesis, reveals how online self-presentation, facilitated by FB, has evolved into a set of behaviors, or celebrity performative practices, driven by self-importance and narcissism, resulting in the rapid proliferation of fame to non-exceptional people on FB. In addition to speculative techniques like intimacy, emotionalization, dramatization and self-sexualization, … Lire la suite
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2020 — Writing and Teaching Curriculum With Relationships in Our Place: A Critical Meta-analysis of Saskatchewan Core French Curricula's Cultural IndicatorsRésumé
In 2011, The Core French curriculum for Levels 1 through 5 were renewed; and Levels 6 through 9 were renewed in 2012. In 2015, the Truth and Reconciliation Committee of Canada released 94 Calls to Action to address the legacy residential schools left on Canadian Indigenous peoples, as well as to move Canada forward in reconciliation. In education, there are seven calls to action related to legacy and four calls to action related to reconciliation. Using document analysis methodology and honouring Indigenous methodology as theoretical frameworks, I organized two focus group interviews to examine if the Saskatchewan Core French Level … Lire la suite
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2020 — Corrosion Inhibition Performance of Sulfur and Nitrogen Based Environmentally Friendly Inhibitors for CO2 Absorption PlantsRésumé
One of the important steps in carbon capture and storage (CCS) is the absorption of carbon dioxide (CO2) from flue gases by aqueous solutions of amines. This process is susceptible to severe corrosion of plant equipment which is typically mitigated by using corrosion resistant materials or corrosion inhibitors or the combination of both. With more stringent environmental regulations on chemical use, treatment and disposal, there is a pressing need to replace inorganic heavy metal corrosion inhibitors that are commonly used in this process with environmentally friendly inhibitors that provide comparable inhibition performance. In this work, two organic compounds, namely dimercaptosuccinic … Lire la suite
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2020 — Development of a System of MEA Solutions Activated by Novel Poyamines for Natural Gas Sweetening Mass Transfer in Absorber and Desorber ColumnsRésumé
This study focused on finding new and efficient activators to be blended with methyldiethanolamine (MDEA) for natural gas processing. Polyamines were highlighted in the open literature to have high CO2 loading as well as high absorption rate. As branched polyethyleneimine (PEI-B) (MW ≈ 800 with almost 16 amino groups) showed a superior performance in adsorption applications for capturing CO2, it was important to test its performance in absorption process. Tetraethylenepentamine (TEPA) is another polyamine (five amino groups) that was indicated in both adsorption and absorption as an excellent solvent; therefore, it was included in this study. PEI-B and TEPA were … Lire la suite
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2020 — An Examination of the ‘Firearms’ Recovered by the Municipal Police Services of the Canadian Prairie ProvincesRésumé
This study examines the items labeled as ‘firearms’ recovered by the Edmonton, Regina, and Saskatoon Police Services (the EPS, RPS and SPS, respectively) between 2010 and 2018; summary data was also provided by the Winnipeg Police Service (WPS). The analyses revealed that these police services all experienced annual increases in the recoveries of items they labeled as firearms. A key finding was that up to one-third of the items labeled as firearms recovered by these agencies were non-firearms such as air guns, firearm components, as well as other miscellaneous items such as bear spray or ammunition. Between 2010 and 2018, … Lire la suite
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2020 — Heat Duty, Cyclic Capacity and Rate of Desorption for MDEA Activated by Novel Polyamines for Natural Gas SweeteningRésumé
This study focused on finding suitable activators to be blended with aqueous MDEA for use in natural gas sweetening. Polyamines are promising amines for capture of CO2 efficiently as they contain more than one amino group in their structures. Polyethylenimine (PEI-B) and Tetraethylenepentamine (TEPA) were chosen and screened to investigate their performance as efficient activators for MDEA. PEI-B and TEPA were compared with piperazine (PZ) which is currently used as the standard activator of MDEA. The screening experiments were carried out using a simple absorption and desorption setup at atmospheric pressure. This setup was validated using 5 M MEA with … Lire la suite
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2020 — Performance Evaluation of Horizontal Wells With Multistage Fractures in Tight Formations by Considering Non-Darcy Effect and Fracture DynamicsRésumé
Performance evaluation of fractured wells has attracted increasing attentions since horizontal drilling and hydraulic fracturing technologies have been successfully and efficiently applied in tight formations; however, such an evaluation process is physically complex and mathematically challenging due to the composite effects of non-Darcy flow within fractures and fracture dynamics including complex fracture geometry, fracture network, and stress-sensitive permeability. It is of fundamental and practical importance to evaluate the production performance of a fractured well by taking the aforementioned composite effects into account in a consistent and accurate manner. A new slab source function was developed in the Laplace domain for … Lire la suite
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2020 — Politiques Linguistiques Au Nigéria et L’Impact du Français Sur Le Développement HumainRésumé
Human development indicates the development of people’s abilities and the creation of an enabling environment for people to make use of these opportunities. Communication through the use of natural language plays an important role in the search for development, whether human, social, political, technological, or any other form of development. This study examine show the acquisition of the French language can contribute to human development in Nigeria (a country surrounded by French speaking nations), holding that bilingualism in English and French will bring about great communicative, interactive, diplomatic and informative, educative, economic benefits to Nigerians. Opportunities and potentialities await Nigerians, … Lire la suite
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2020 — Computational Aspects of An Asymptotic Analysis of Method of Moments Estimators of Parameters For the Binomial DistributionRésumé
In this thesis, I evaluate the confidence region of the known parameters p and m of the Binomial distribution and analyze them using descriptive statistics. This research first introduces the method of moments estimators of these parameters, p ̂_n and m ̂_n. Because p ̂_n and m ̂_n do not have mean values and variances, new, modified estimators, p ̃_n and m ̃_n, are presented for the parameters of the binomial distribution. I use the Delta method to develop the asymptotic distribution of p ̂_n, m ̂_n, p ̃_n and m ̃_n. The formulae used to calculate the confidence region … Lire la suite
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2020 — The Spaces of Addiction in Oscar Wilde’s The Picture of Dorian GrayRésumé
My thesis focuses on the role of opium and addiction in Dorian Gray. Opium is present throughout the entire novel, and this particular drug is very significant in Dorian’s life, yet the significance of this drug is often overlooked by critics. Up to this point, the main focus of commentary on Dorian Gray has been about the painting and its supernatural qualities, theatre in late Victorian London, and Dorian’s homoerotic desires. My thesis builds on these current academic contributions by arguing that opium is Dorian’s central addiction in the text, influencing his secondary addictions to aesthetic pleasure and sex and … Lire la suite
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2020 — Imagining Ramona: The Mythologization and Martyrdom of a Zapatista Resistance FighterRésumé
During the Ejército Zapatista de Liberación Nacional (EZLN/Zapatista) campaign, images of insurgent leader La Comandanta Ramona circulated across Mexico and the globe, encouraging popular support for the Indigenous resistance movement, which was launched from Chiapas’ Lacandón jungle on January 1, 1994.1 Deemed “the petite warrior”2 and a “modern-day David battling Goliath,”3 the masked Maya woman, according to political scientist Karen Kampwirth, captured “[m]ore than any other single Zapatista woman…the imagination of millions.”4 Indeed, by challenging the Mexican government and defending the rights of Indigenous peoples, Ramona became one of the most important revolutionary women in the country’s history. In an … Lire la suite
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2020 — Assessment of the Spatial and Temporal Hydroclimatic Variability of the Canadian Prairie ProvincesRésumé
Natural climatic variability, changing climatic conditions, periodic droughts, and excessive moisture events impact agriculture, industry, municipalities, and surface water resource management throughout the Canadian Prairie Provinces. Persistent, large-area droughts are some of the most damaging natural disasters, and further understanding of both past and future climatic variability and change is imperative, as impacts to society, agriculture, and industry will likely be amplified and more severe under changing climatic conditions. Using high spatial and temporal resolution, and instrumental, regional climate model projections, and proxy (tree-ring) records, this research focussed on the frequency, intensity and magnitude of seasonal, decadal, and longer timescale … Lire la suite
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2020 — An Intelligent System for Type II Diabetes Mellitus DiagnosticRésumé
Diabetes mellitus is a modern world burden mentally, physically, and economically. Diabetes mellitus occurs when the blood sugar level reaches too high levels. Some of the significant complications of diabetes mellitus are cardiovascular diseases, major organ damages, Alzheimer's, depression, and in further stage losing a life. The diagnosis of diabetes mellitus is a complicated and time-consuming problem. In the diagnosis process, a medical expert has to investigate many factors, such as age, gender, body mass index and blood glucose level. Also, after the first laboratory tests and medical exam results, if the first laboratory test is affirmative for disease, the … Lire la suite
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2020 — A Patient Oriented Research Approach To Assessing Patients’ And Primary Care Physicians’ Opinions on Trauma-Informed Care in Primary Care in CanadaRésumé
Trauma-informed care (TIC) is understanding and responding to the impact of trauma, while promoting safety, trust, collaboration, empowerment, peer support, and cultural sensitivity. While there are two commonly cited models (Elliott et al., 2005; M. Harris & Fallot, 2001), there has been no standard way of conceptualizing or operationalizing TIC in healthcare. Although past studies (B. L. Green et al., 2015; Miller et al., 2017; Schiff et al., 2017) have investigated training healthcare providers on TIC, outcomes for these studies focused mainly on providers’ feedback of the training program. To date, no study has asked providers how much they practice … Lire la suite
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2020 — Tales of Re-Entry to Adult High School Programs: A Rhizomatic (De)(Re)TanglingRésumé
This rhizomatic research is an experimental wondering and wandering with a Deleuzian- Guattarian mindset. The purpose of this study is to de-re-territorialize affective adults who have been dropping out and dropping back in to high school. Adults who are dropping out and dropping in often find themselves placed at society’s margins. These margins occur outside of the (ir)rational system of education that purposes to shape its body of students, its product, its graduates, through the attainment of a high school diploma. The re-entry (dropping in) process is the focus in this study. Thus, attention is given to possible (re)consideration of … Lire la suite
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2020 — “…And Thanks To The Islamic Staff”: An Action Research Study Exploring Collaboration And Belonging In An Islamic SchoolRésumé
This action research study investigates the use of collaboration in a faith-based Islamic school between Muslim and non-Muslim teachers and how this collaboration influences teacher sense of belonging. Data was collected during eight months using the following methods: semi-formal interviews, focus group meetings, journaling, and photography. From the data, two significant obstacles to collaboration were found: a lack of time and power imbalances. Along with power imbalances, many inequalities between the Muslim and non-Muslim teachers were identified by participants. Participant excerpts point to a perception of issues around respect and support. This perception is due to specific practices such as … Lire la suite
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2020 — The Discovery and Prediction of Genetic Interactions Using Data Science Genetic InteractionsRésumé
The overarching goal of my thesis work was to develop and use data science techniques in order to discover as well as predict genetic interactions (GIs), i.e., functional interactions between gene pairs) so that novel functional associations between genes and their higher-order organizations (protein complexes, pathways and bioprocesses) could be established. Keeping GIs in the center, the work can be divided into three objectives: create useful data on GIs (research article 1; chapter 2), improve methods for predicting the strength of GIs (research article 2; chapter 3), and transfer GI knowledge from one organism to another (research article 3; chapter … Lire la suite
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2020 — A Comparison Study of Carbon Dioxide Absorption Performance in MEA and Blended Amine Solvents for Post-combustion Process: Experiment, Modeling and SimulationRésumé
In recent years, industrialization causes excess carbon dioxide emissions. Carbon dioxide (CO2) is one of the main greenhouse gases due to human activities. However, high costs remain the main challenge to control the carbon dioxide from industry. Due to this issue, the carbon capture technique is developing slowly in most developing countries. This work is going to compare and explore a more effective blended amine solvent comparing with current common single amine solvents for the CO2 chemical absorption process for improving absorption performance and reducing the investment and operating costs. In this research, the CO2 absorption performance of aqueous MDEA/PZ … Lire la suite
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2020 — Experimental Study About Radial Viscous Fingering in Heavy Oil ReservoirRésumé
Viscous fingering is an unstable flow phenomenon between two fluids with different viscosities, and it is widely found in many kinds of viscous displacements in nature, such as the flow of rainwater or contaminants through soil and flow of oil or natural gas through reservoirs. In petroleum industry, viscous fingering will be encountered frequently during waterflooding or chemical flooding in heavy oil production. Because of the exist of viscous fingering, the breakthrough time is shorted significantly, which causes oil and natural gas production decreases significantly. Many researches have been conducted to further study the mechanism of viscous fingering. Hele-Shaw model, … Lire la suite
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2020 — Multiple Linear Model Selection: A Data Study on the Ecological Controls on Methylmercury ProductionRésumé
Data on methylmercury (MeHg) concentrations and other environment parameters was collected between 2006 to 2012 from wetlands in the prairie pothole region in Saskatchewan by members of the Department of Biology, University of Regina. My research goal was to use the Backward Elimination model selection to develop the best fitted linear regression model to test the impact of seven environment variables on methylmercury concentration. Before analysis, I cleaned the whole data set and removed all missing values and transformed some variables such as methylmercury, sulfate, and conductivity. I compared linear regression model with two-way interactions and no interaction linear model. … Lire la suite
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2020 — Development of Functional Flax Fibers Through Self-Assembled Nanoparticles for Oil-Water SeparationRésumé
Oil-water separation has attracted extensive attention since frequent oil leakage incidents and oily-wastewater discharge caused serious disaster to the environment. Traditional separation technologies have difficulties in dealing with rapid and widespread oil spills and may cause secondary pollution. The use of oil barriers with special wettability is a promising alternative for separating oil from water. Natural materials, such as biomass have advantages of biological degradability, resource abundance, and low cost. In this study, environmentally friendly, reusable, and low-cost functionalized flax fibers were fabricated to separate oil from water. Flax fibers were modified by plasma-induced poly (acrylic acid) (PAA) polymerization followed … Lire la suite
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2020 — An Empirical Study on Sum-Product Networks Structure Learning and Deep Convolutional Sum-Product NetworksRésumé
Sum-product Networks (SPNs) are generative probabilistic models which obtained the attention of the community for its tractability and easy methods for learning. Our rst main contribution is an empirical comparison of methods for SPN learning and inference. LearnSPN is a popular algorithm for learning SPNs that utilizes chop and slice operations. As g-test is a standard chopping method and Gaussian mixture models (GMM) using expectation-maximization is a common slicing method, it seems to have been assumed in the literature that this is the best pair in LearnSPN. On the contrary, our results show that g-test for chopping and k-means for … Lire la suite
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2020 — Exclusions Zones for Small Modular ReactorsRésumé
The objective of this thesis is to estimate the size of the exclusion zone around a small modular reactor (SMR). The aim of such zone is to provide an atmospheric space sufficient to dilute any radioactive releases during an accident, to a level below the safe regulated radiation dose for the public. A hypothetical severe accident is considered for a generic SMR, and the whole-body radiation dose associated with the accident was estimated at various distances and reactor power levels. The results were verified against those of a more complex model for a typical CANDU reactor. The obtained results were … Lire la suite
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2020 — A Novel Adaptive Power System Protection Application Using Synchrophasor Measurements and Artificial Neural NetworksRésumé
The demand on the power grid is constantly increasing. Combining this with the growing amount of renewable energy and widespread integration of distributed generation creates many challenges. These challenges push the power grid closer to its limits and can result in system instability. This makes the system more vulnerable to large scale events caused by voltage collapse and cascading outages. Several major power outages in recent history have been a result of multiple contingencies occurring within a small timespan. This research focuses on determining contingencies such as transmission line and transformer outages using an artificial neural network (ANN) algorithm with … Lire la suite
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2020 — Improving the Solution of an Incomplete Problem in Computed TomographyRésumé
Computed Tomography (CT) is an imaging method that uses radiation, such as Xrays, to scan an object from di erent orientations to provide projection-measurements to reconstruct a pixelated image of the interior of the object using mathematical algorithms. To successfully recover an unambiguous image of the scanned object, the number of measurements should be equal or higher than the number of the pixels (unknowns). This requires relatively long data acquisition time and high radiation exposure. To reduce radiation exposure, particularly in medical applications, this thesis investigates whether credible CT images can be recovered from a lower number of radiation projections; … Lire la suite
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2020 — Effects of training with an increase in training bar diameter on strength and functional endurance within older adultsRésumé
It is well established that there is an underlying process of muscular atrophy that occurs throughout the aging process. This issue of muscle atrophy more specifically known as sarcopenia, has been (and will continue to be) a great burden on both health care and quality of life. Current research has shown the importance of resistance training (RT) within all age groups, regardless of level of functionality or lifestyle. It was hypothesized that aging adults (≥50 years of age) who completed a 6-week RT program using a thick training bar attachment would increase upper limb muscle strength and endurance (primary outcome … Lire la suite
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2020 — Complete Order Equivalence of Spin UnitariesRésumé
The main objective of this thesis is to explore linear spaces of matrices and linear maps on matrix spaces that arise from spin systems, or spin unitaries, which are finite sets S of selfadjoint unitary matrices such that any two distinct unitaries in S anticommute. We are interested in examining finite-dimensional spin unitaries obtained from spin systems and complete order isomorphisms between the operator systems associated with spin systems. Lire la suite
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2020 — Stochastic Modelling of Heavy-Tailed Precipitations in Canadian PrairiesRésumé
The statistical modelling of extreme precipitation structures is essential in many aspects such as assessing and managing risks resulting from the occurrence of such extreme events for agricultural purposes, in particular. Typically, daily precipitation time series with many zero (on dry days) and positive (on wet days) observations exhibits characteristics such as heavy-tailedness and volatility clustering (i.e., some periods of high and some periods of low volatility) which make it challenging to develop an effective model for both the theoretical and observations viewpoints. The main goal of this study is to introduce a model capable of describing structure of precipitation … Lire la suite
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2020 — Does Persuasive Design Predict Efficacy In Unguided iCBT? A Meta-Regression AnalysisRésumé
Mental health disorders such as depression and anxiety are leading contributors to the global disease burden. However, a large proportion of people with mental health disorders remain untreated, often due to a lack of nearby services, logistic barriers (e.g., work schedules), stigma, the cost of treatment, and other barriers. Internet-delivered cognitive behavioural therapy (iCBT) without therapist guidance represents a promising solution to this problem, as it is cost-effective, convenient for users, and possible to implement on a large scale. Various persuasive design elements—features or design principles intended to make interventions more engaging—have been proposed and implemented to improve adherence and … Lire la suite
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2020 — An Exploratory Study of the Collaborative Divorce Process from the Perspective of Collaborative ProfessionalsRésumé
Divorce is becoming a societal norm, with approximately 40% of marriage in Canada ending in divorce (Douglas, 2008). The conflict arising from divorce is pervasive and affects the entire family, with long-term detrimental impacts on children. There is a need for interventions in the divorce process that would reduce conflict and increase family members’ wellbeing. This study explores collaborative divorce (CD), a non-adversarial option for families. There is a dearth of literature regarding CD. Thus, this qualitative study used a transcendental phenomenological approach to provide an in depth understanding of CD as it is experienced by collaborative professionals, including lawyers, … Lire la suite
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2020 — Mobilization and Flow of Multiple Oil Slugs in Water Saturated Capillary ModelsRésumé
This research aims to investigate the mobilization and flow of Multi-Oil Slugs (MOS) inside capillary models saturated with water, attempting to understand the mechanism on how single oil slug (SOS) and MOS inside the capillary models are mobilized and stabilized inflow under static external pressure. The mobilization and stabilization pressures required for MOS in the models are quantified under various experimental conditions with different numbers of oil slugs. The oil slugs are all found experiencing the following patterns of state in the mobilization and flow stabilization: rest slowly increased pressure dramatically increased pressure motion impending unstable … Lire la suite
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2020 — Effects of Creatine Supplementation During Resistance Training Sessions in Physically Active Young AdultsRésumé
The purpose was to examine the effects of intra-workout creatine supplementation during resistance training sessions on muscle mass and exercise performance in physically active young adults. Twenty-two participants were randomized to supplement with creatine (CR: n = 13, 26.15 ± 4.66 yrs, 80.5 ± 18.07 kg, 174.50 ± 10.53 cm; 0.0055 g/kg post training set) or placebo (PLA: n = 9, 26.44 ± 5.10 yrs, 79.88 ± 19.97 kg, 175.05 ± 12.09 cm; 0.0055 g/kg post training set) during 6 weeks of resistance training (18 sets per training session). Prior to and following training and supplementation, measurements were made for … Lire la suite
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2020 — Advances in Representation and Learning of Temporal Event SequencesRésumé
This thesis focuses on representation and learning of two types of temporal event sequences. The first type is a sequence of interval-based events, called an e-sequence, where every event can have a duration, and the second type is a sequence of pointbased events, where events have no durations. For interval-based event sequences, we propose the coincidence eventset representation (CER) to represent interval-based events along with their durations. This representation is especially designed for pattern mining problems. We incorporate both internal and external utilities into e-sequences and formulate the problem of high utility pattern mining of e-sequences. We present a sound … Lire la suite
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2020 — Accroitre la collaboration entre l'ecole et la communaute: comment le curriculm peut-il servir de pont entre les familles et l'ecole?Résumé
Résumé Cette étude qualitative aborde le thème de la collaboration entre les familles et l’école et ce, en lien avec le curriculum scolaire. Des chercheurs comme Larivée (2011), Sheldon (2009), Deslandes (2001), Đurišić et Bunijevac (2017) ont tour à tour apporté des résultats de recherche qui démontrent que la collaboration profite aux écoles, aux élèves et aux familles. Les objectifs de cette étude portent sur la collaboration en général et sur le curriculum comme moyen de collaboration en particulier. Il s’agit donc d’identifier des voies et moyens qui faciliteraient la collaboration entre la famille et l’école et de voir comment … Lire la suite
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2020 — Ethylenediamine: Modelling of Its Conformers and Its Chelating Ability with Zinc (II) Complexes in Aqueous SolutionRésumé
The objective of this thesis is to examine the performance of Continuum Solvation Models (CSMs) for the quantum chemistry prediction of the thermodynamics of an entropy-dominated reaction. The chelation reaction Zn(NH3)42+ + 2 en Zn(en)22+ + 4 NH3 (en = 1,2-ethylenediamine) is the chosen reaction. Quantum chemistry calculations of the reaction free energy, enthalpy and entropy are performed, and results analyzed, in Chapter 3. The prediction of the aqueous thermodynamic values for this reaction is further complicated by the presence of several conformers of ethylenediamine in 1 M aqueous solutions, and conflicting literature claims over which conformers are most … Lire la suite