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Comparison Of Mercury Dynamics In High Arctic Lakes, Karista Elizabeth Hudelson
Comparison Of Mercury Dynamics In High Arctic Lakes, Karista Elizabeth Hudelson
Electronic Theses and Dissertations
Arctic lakes and their watersheds are being simultaneously subjected to the deposition of atmospheric pollutants such as mercury (Hg), and warming. Once Hg enters an ecosystem, it may become methylated, greatly increasing its toxicity and reducing organisms’ ability to eliminate it. Mercury is bioaccumulative and thus found at high concentrations in land-locked Arctic char (Salvelinus alpinus) and other top predators. In sediment, Hg methylation rate is temperature-dependent, and [Hg] in Arctic predatory fish has been correlated with trends in air temperature. Despite reductions in Hg emissions in North America and Europe, [Hg] continues to rise in some Arctic species. The …
Impact Of Design Patterns On Code Quality In Blockchain-Based Applications, Vijay Rajasekar Thirulokachander
Impact Of Design Patterns On Code Quality In Blockchain-Based Applications, Vijay Rajasekar Thirulokachander
Electronic Theses and Dissertations
Blockchain or Distributed Ledger Technology (DLT) introduces a new computing paradigm that is viewed by experts as a disruptive and revolutionary technology. While bitcoin is the most well-known successful application of blockchain technology, many other applications and sectors could successfully utilize the power of blockchain. The potential applications of blockchain beyond finance and banking encouraged many organizations to integrate and adopt blockchain into existing or new software systems. Integrating and using any new computing paradigm is expected to affect the best practice and design principles of building software systems. Emerging blockchain-based applications require careful attention to many functional and nonfunctional …
Design Of A Real-Time Method For Detection And Evaluation Of Corrosion In Vehicles, Kunj Dhonde
Design Of A Real-Time Method For Detection And Evaluation Of Corrosion In Vehicles, Kunj Dhonde
Electronic Theses and Dissertations
Automobiles endure several challenges when operating on the road that can degrade their performance, functionality, appearance, and overall utility. Although, corrosion is very ancient, it is the most dangerous hazard to an automobile. Corrosion can be defined as natural interaction between the metal and its surrounding atmosphere which results in oxidation of metal. This leads to change in metal properties and can be severely dangerous. One of the easiest ways to recognize corrosion is by using visual inspection methods. Visual inspection results are highly dependent on the operator’s way of analyzing corrosion and operator’s experience. Thus, visual inspection method lack …
Molecular Techniques To Advance The Conservation Of Imperilled Freshwater Fishes, Ryland George Corchis-Scott
Molecular Techniques To Advance The Conservation Of Imperilled Freshwater Fishes, Ryland George Corchis-Scott
Electronic Theses and Dissertations
The conservation of imperilled fishes should be informed by species-specific genetic information. However, there are a lack of molecular data for most species at risk with the development of species-specific primer acting as a barrier to genetic evaluations. Here, I describe the development and preliminary testing of a set of microsatellite markers for the imperilled Lake Chubsucker (Erimyzon sucetta). These markers are apparently diploid, are polymorphic, and have been demonstrated to amplify individuals from across the species’ North American range. The microsatellite markers described in this thesis have applications for population genetics as well as informing source population selection for …
Freshwater Beach Microbial Ecology, Community Dynamics And Adaptive Responses To Environmental Changes Using Metabarcoding And Transcriptomics, Abdolrazagh Hashemi Shahraki
Freshwater Beach Microbial Ecology, Community Dynamics And Adaptive Responses To Environmental Changes Using Metabarcoding And Transcriptomics, Abdolrazagh Hashemi Shahraki
Electronic Theses and Dissertations
The Laurentian Great Lakes (LGLs) represent the single most valuable natural resource on the North American continent and are a critical source of drinking water, important aquatic species habitat, water for the industrial sector and tourism/recreational activities as well as many other ecological services. LGLs ecosystems are changing rapidly due to climate change effects and are thus highly susceptible and responsive to any added anthropogenic stressors. The aquatic bacterial community affects critical ecosystem functions, such as nutrient cycling, water quality, recreational activities, etc., in ecosystems such as the LGLs, but perturbations can alter both the composition and functionality of the …
Investigating The Educational Experiences Of Girls In Tanzania: The Efficacy Of A Girls’ Leadership And Empowerment Program, Brianna Louise Jentzel
Investigating The Educational Experiences Of Girls In Tanzania: The Efficacy Of A Girls’ Leadership And Empowerment Program, Brianna Louise Jentzel
Electronic Theses and Dissertations
Considerable research has been conducted to identify the barriers to girls’ education in sub-Saharan Africa and the reasons for their existence. These factors can be grouped into three different categories: economic, socio-cultural, and contextual. There are steps that can and must be taken in order to support girls in their educational endeavours in sub-Saharan Africa. These steps include, but are not limited to, addressing cultural biases towards girls and education; eradicating gender-based violence in schools; improving infrastructure issues; and increasing the number of female teachers in classrooms. This study will explore the educational experiences of secondary school girls in Singida, …
Community Composition Of Aquatic Invertebrates Along Dissolved Oxygen Gradients In Lake Huron Coastal Wetland Wet Meadows, Danielle Elizabeth Gunsch
Community Composition Of Aquatic Invertebrates Along Dissolved Oxygen Gradients In Lake Huron Coastal Wetland Wet Meadows, Danielle Elizabeth Gunsch
Electronic Theses and Dissertations
Wetlands are an ecotone between terrestrial and aquatic environments and therefore support a diverse and unique flora and fauna. Macroinvertebrates make up a substantial portion of the biodiversity. The relationship between aquatic invertebrate community composition and the association with submergent and emergent macrophyte biomass is relatively well documented. However, the constraints imposed by conditions in wet meadow zones – areas that are intermittently flooded but whose soils are typically water-saturated and anoxic are less well understood. I investigated the relative importance of dissolved oxygen along the water depth gradient and its influenced on invertebrate community composition in comparison to the …
Perception And Performance Of Working Memory: Insights Into Test Anxiety, Rebecca Grossman
Perception And Performance Of Working Memory: Insights Into Test Anxiety, Rebecca Grossman
Electronic Theses and Dissertations
Test anxiety is a common phenomenon that can be detrimental to cognitive performance, academic achievement, and mental health. One mechanism consistently identified as playing a role in such deficits is working memory. While many studies have investigated the relationship between working memory and test anxiety, approaches to measuring working memory have varied between using assorted standardized behavioural measures and self-report inventories. While self-report inventories are often found to be valid, there is some evidence suggesting that subjective appraisal of functioning might not be accurate in all contexts. Therefore, the purpose of this study was to determine whether self-appraisal of working …
Genetic Algorithm Based Convolutional Neural Network For Few Shot Learning In Disease Type Prediction On Rna-Seq Data, Kowshik Sharan Subramanian
Genetic Algorithm Based Convolutional Neural Network For Few Shot Learning In Disease Type Prediction On Rna-Seq Data, Kowshik Sharan Subramanian
Electronic Theses and Dissertations
Diagnosing the correct types of the disease is essential to the effective treatment. The diagnosis may not always be straightforward from the biological tests especially during the early stages of the disease. Human body responds to the disease by producing certain proteins. If we know which genes are active, that is, which proteins are being produced, we can more accurately classify disease subtypes. This study is based on the genetic information extracted from the patient’s biological sample and is used to classify cancer subtypes. Among different types of genetic data, we consider RNA-seq data in this thesis. Studies based on …
A Methodological Framework For The Assessment Of Level Of Service Of Stormwater Infrastructure, Dorcas Appiah
A Methodological Framework For The Assessment Of Level Of Service Of Stormwater Infrastructure, Dorcas Appiah
Electronic Theses and Dissertations
With climate change becoming the single most concern in the contemporary world, stormwater management has been receiving greater attention than before. Even though stormwater infrastructure plays a pivotal part in the municipality, there are no available standards or tools to assess its level of service (LOS). Stormwater infrastructure should manage the quantity and quality of stormwater by controlling flooding, pollutants and ensuring public safety. Currently, creating a proactive stormwater infrastructure management system is hindered by a lack of resources despite the importance of these resources for proper stormwater infrastructure management. In an advanced asset management system, LOS assessment is identified …
The Influences Of Canadian Outdoor Adventure Education On Personal And Spiritual Growth, Philip William Robson
The Influences Of Canadian Outdoor Adventure Education On Personal And Spiritual Growth, Philip William Robson
Electronic Theses and Dissertations
Canadian outdoor adventure education (Canadian OAE) is a unique teaching method that can create affordances for beneficial outcomes for its participants. In Ontario high schools, Canadian OAE is typically found in Integrated Curriculum Programs with an environmental focus. While there are over 100 of these programs in Ontario school-based opportunities for Canadian OAE have been rare in Windsor-Essex over the last 25 years. However, a Windsor-Essex Christian private high school now offers experiences in Canadian OAE. The purpose of this case study is to describe the influence of a Grade 11 program on its students. Using an online questionnaire and …
Control Of Four-Wire Inverter-Interfaced Dgs For Accurate Fault Type Classification, Wael Radwan
Control Of Four-Wire Inverter-Interfaced Dgs For Accurate Fault Type Classification, Wael Radwan
Electronic Theses and Dissertations
Inverter-interfaced distributed generators (IIDGs) generate fault currents that are different from those generated by conventional synchronous generators (SGs). As a result, commercial relays—that utilize current-angle-based phase selection measurements—misidentify faulty phase(s), which adversely impact the grid resiliency and reliability. In this thesis, a new control scheme is proposed to regulate the sequence components of the IIDG currents during unbalanced faults to ensure accurate fault type classification by commercial relays. The proposed controller controls the positive-sequence and negative-sequence currents in the dq-frame with a decoupled synchronous reference frame (DDSRF) based phase-locked loop (PLL) for components extraction and synchronization. It also uses a …
Progress Towards The Synthesis Of Carbohydrate-Based Biomedical And Material-Science Relevant Molecules, Seyed Iraj Sadraei
Progress Towards The Synthesis Of Carbohydrate-Based Biomedical And Material-Science Relevant Molecules, Seyed Iraj Sadraei
Electronic Theses and Dissertations
Cancer cells express unique carbohydrate signatures on their surfaces known as tumour-associated carbohydrate antigens (TACAs). These antigens are not typically found on healthy cells and therefore are promising targets for immunotherapy using adap-tive immune response tools. If the immune system could theoretically be “trained” to tar-get this molecule, then the immune system could be used to help eradicate any cancer cells from the host. A problem with carbohydrate-based targets is they are not stable in the body because of their inherent acetal functionality: the glycosidic bond. This research aims to remove the unstable acetal functionality in carbohydrates by replacing the …
Integrated Thermal Systems And Controls Modelling For Auto Mode Simulation And Optimization, Mingzhe Chang
Integrated Thermal Systems And Controls Modelling For Auto Mode Simulation And Optimization, Mingzhe Chang
Electronic Theses and Dissertations
Virtual product development has become the preferred approach for vehicle A/C system development. The advantages provided by virtual modelling compared to traditional approach are accelerated development pace and reduced cost. The thesis focuses on virtual modelling of the A/C system on a SUV vehicle based on experimental data. A virtual model of the A/C system is constructed and calibrated in Simcenter Amesim. The model includes a vapour-compression refrigeration cycle and a cabin air model. The components are modelled and calibrated based on supplier data. The two thermal systems interact thermally at the evaporator level. The cabin air blower unit with …
Correspondence Of Beach User Perception, Lifesaving Strategies And Rip Currents At Brackley Beach And Cavendish Beach Prince Edward Island, Summer Locknick
Correspondence Of Beach User Perception, Lifesaving Strategies And Rip Currents At Brackley Beach And Cavendish Beach Prince Edward Island, Summer Locknick
Electronic Theses and Dissertations
Rip currents are an emerging public health hazard, with the potential to have serious socioeconomic impacts on coastal communities globally. Rip currents, colloquially known as rips, are common along the north shore of Prince Edward Island, and are associated with a transverse bar and rip morphology that tends to develop as the bars migrate landward following winter storms. The rip morphology tends to develop at the height of the economically important tourist season. Several drownings have occurred within and adjacent to Prince Edward Island National Park (PEINP) in recent years, and they have been attributed to rip currents at or …
Adaptive Indoor Pedestrian Tracking Using Foot-Mounted Miniature Inertial Sensor, Ravindra Kumar Dhanapal
Adaptive Indoor Pedestrian Tracking Using Foot-Mounted Miniature Inertial Sensor, Ravindra Kumar Dhanapal
Electronic Theses and Dissertations
This dissertation introduces a positioning system for measuring and tracking the momentary location of a pedestrian, regardless of the environmental variations. This report proposed a 6-DOF (degrees of freedom) foot-mounted miniature inertial sensor for indoor localization which has been tested with simulated and real-world data. To estimate the orientation, velocity and position of a pedestrian we describe and implement a Kalman filter (KF) based framework, a zero-velocity updates (ZUPTs) methodology, as well as, a zero-velocity (ZV) detection algorithm. The novel approach presented in this dissertation uses the interactive multiple model (IMM) filter in order to determine the exact state of …
Navigating Online And Offline Social Spaces: Interpersonal Relationships And Problematic Gaming Behaviour In Mmorpg Players, Aranda Christine Wingsiong
Navigating Online And Offline Social Spaces: Interpersonal Relationships And Problematic Gaming Behaviour In Mmorpg Players, Aranda Christine Wingsiong
Electronic Theses and Dissertations
Previous research suggests that individuals who play Massively Multiplayer Online Roleplaying Games (MMORPGs) may experience interpersonal benefits from their in-game interactions with other players (Kaczmarek & Drazkowski, 2014). At times, however, these online relationships may develop at the expense of their offline relationships and some players may even be at risk for developing problematic gaming behaviours (PGB). The current study aimed to better understand the online and offline interpersonal experiences of MMORPG players and to identify interpersonal risk factors for developing PGB. A total of 149 MMORPG players between the ages of 18 to 46 years completed a set of …
Face Recognition: A Comparative Approach From Traditional To Recent Trends, Jayanthi Raghavan
Face Recognition: A Comparative Approach From Traditional To Recent Trends, Jayanthi Raghavan
Electronic Theses and Dissertations
Face recognition, an important biometric method used extensively by researchers, has become more popular recently due to development of mobile applications and frequent usages of facial images in social media. A major development is attained in facial recognition methods due to the emergence of deep learning methods. As a result, the performance of face recognition systems reached a matured state. The objectives of this research are to improve the accuracy rate of both traditional and modern methods of face recognition system under illumination variation by applying various preprocessing techniques. In the proposed face recognition approach, various preprocessing methods like SQI, …
Wear Of Bainite-Transformed Aisi 1045 Steel In Comparison With Nitriding And Boriding Treatments, Mingxiao Yang
Wear Of Bainite-Transformed Aisi 1045 Steel In Comparison With Nitriding And Boriding Treatments, Mingxiao Yang
Electronic Theses and Dissertations
The purpose of this work is to develop a bainitic heat treatment procedure for wear reduction in a medium carbon steel and compare the efficiency of this heat treatment with gas nitriding or electrochemical boriding surface treatments. Heat treatments were conducted on AISI 1045 steel blocks taken from an automotive component, namely an overrunning alternator decoupler (OAD) pulley bore using an induction heater. The samples were quenched in different quenching media of oil, melt salt and water. The hardness and microstructural transformation results were represented with cooling curves superimposed on the Continuous Cooling Transformation (CCT) diagram of the 1045 steel. …
Numerical Prediction Of Automotive Underhood Airflows Using An Uncalibrated Fan Body Force Model, Palak Saini
Numerical Prediction Of Automotive Underhood Airflows Using An Uncalibrated Fan Body Force Model, Palak Saini
Electronic Theses and Dissertations
Underhood vehicle airflow simulations are an important part of the overall vehicle thermal management process, especially in the preliminary stages of the vehicle development program when performing experimental work on cooling system prototypes can prove to be expensive, time-consuming, or simply impossible due to the absence of any physical vehicle prototypes. Accurate prediction of the automotive fan performance, which forms a critical component of the cooling module, is a prerequisite for the optimum sizing and design of heat exchangers, and the rest of the under-hood installations. The coupled and complex nature of the under-hood flow environment necessitates consideration of the …
What Do You See When You Look At Me? Social Media, Socialized Gender Variables, And Disordered Eating Among Adolescent Girls, Annamaria Mcandrew
What Do You See When You Look At Me? Social Media, Socialized Gender Variables, And Disordered Eating Among Adolescent Girls, Annamaria Mcandrew
Electronic Theses and Dissertations
The present study examined sociocultural factors associated with disordered eating among adolescent girls. The objective of Part 1 of the study was to explore the associations between social media use, socialized gender variables, and eating pathology. Participants were 238 adolescent girls between 14 and 17 years of age. Participants completed online measures assessing eating pathology, objectified body consciousness, social media use, and self-esteem. Results of Part 1 indicated that girls used photo-based social media applications – in particular, Instagram and Snapchat – for between one and four hours per day. Time spent using and frequency of checking social media were …
Weight Reduction In Electric Motors: Aluminum Vs Copper Wires, Lucas Chauvin
Weight Reduction In Electric Motors: Aluminum Vs Copper Wires, Lucas Chauvin
Electronic Theses and Dissertations
Environmental concerns driven by climate change have resulted in increased market demand for lightweight and inexpensive electric vehicles. This study examines the feasibility of replacing copper conductors with aluminum conductors in automotive scale electric motors to address this demand. A comprehensive review of the literature contrasting aluminum and copper conductors is included to create a unified source for future research. This study also contains a two-part formability and windability analysis of square cross section electrical conductor aluminum and rectangular electrolytic tough pitch copper. The first part of the analysis applies standardized testing from ASTM D1676 to characterize the formability and …
Design And Modeling Of Piezoelectric Micromachined Ultrasonic Transducer (Pmut) Using A Multi-User Mems Process For Medical Imaging, Jenitha Antony Balasingam
Design And Modeling Of Piezoelectric Micromachined Ultrasonic Transducer (Pmut) Using A Multi-User Mems Process For Medical Imaging, Jenitha Antony Balasingam
Electronic Theses and Dissertations
According to the Canadian Cancer Society, 2020, “1 in 8 women will be affected by breast cancer and 1 in 33 will die from it.” There has been a decline in breast cancer causalities due to the early detection using advanced imaging technologies. This signifies the importance of early detection of breast cancer that increases the survival rate and treatment options for the patients. One of the platforms which are aiding the early detection is Microelectromechanical Systems (MEMS)-base imaging system. In this thesis, a Piezoelectric Micromachined Ultrasonic Transducer (PMUT) is proposed to work at lower frequency ranges for higher penetration …
Development Of Graphene-Filled Fluoropolymer Composite Coatings For Condensing Heat Exchangers, Mitchell Jacob Cierpisz
Development Of Graphene-Filled Fluoropolymer Composite Coatings For Condensing Heat Exchangers, Mitchell Jacob Cierpisz
Electronic Theses and Dissertations
Low-temperature waste heat recovery employs condensing heat exchangers to recover both sensible and latent heats. Due to the condensation of flue gases within these heat exchangers, they are subjected to severe corrosion. Perfluoroalkoxy (PFA) has been applied as a barrier layer on the surfaces of these heat exchangers for the prevention of corrosion. However, PFA has exhibited poor thermal properties and durability, which are requirements in low-temperature heat recovery applications. In this thesis, carbon-based nano-materials (8 nm and 60 nm thickness graphene particles and multi-walled carbon nanotubes, MWCNT) were incorporated into fluoropolymer (PFA) powders to generate thermally conductive and corrosion …
Mechanism Determination Of The Effects Of Pancratistatin On Model Mitochondrial Membranes, Brett William Rickeard
Mechanism Determination Of The Effects Of Pancratistatin On Model Mitochondrial Membranes, Brett William Rickeard
Electronic Theses and Dissertations
Apoptosis is programmed cell death that is essential for physiological development and tissue homeostasis. From a biochemical standpoint, this process can be exploited to target and eliminate specific cell types, such as cancer cells. Pancratistatin (PST) is an antiviral alkaloid metabolite that has demonstrated directed apoptotic action on various human cancer cell lines while having minimal/no toxic effect on normal cells. However, PST’s mechanism of action remains uncertain. To better understand how PST induces its anti-cancer action various biophysical techniques were employed. Neutron spin-echo (NSE) spectroscopy was used to examine how PST impacted the bending fluctuations of large unil- amellar …
Institutional Factors That Influence Creative Arts Students To Pursue Further Education Post-Baccalaureate In An Education- Based Program, Kaitlyn Vivian Anne Karns
Institutional Factors That Influence Creative Arts Students To Pursue Further Education Post-Baccalaureate In An Education- Based Program, Kaitlyn Vivian Anne Karns
Electronic Theses and Dissertations
Ontario Universities offer a variety of undergraduate programs that could be classified as creative arts programs. Whether these programs focus on one specific major, such as a Bachelor of Fine Arts in Acting, or concurrent programming, such as a concurrent music and education program, students have a variety of choices for their post-secondary studies. The current body of scholarly literature examines many reoccurring factors that influence a student’s choice post-baccalaureate. These factors include socio-economics, institutional characteristics, and student experience. A majority of literature addressing these three factors focuses on students enrolled in Science, Technology, Engineering, and Mathematics (STEM) programs, suggesting …
What Trying To Forget Tells Us About Trying To Remember: A Link Between Associative Memory And Directed Forgetting, Brette E. Lansue Burns
What Trying To Forget Tells Us About Trying To Remember: A Link Between Associative Memory And Directed Forgetting, Brette E. Lansue Burns
Electronic Theses and Dissertations
Much of directed forgetting research has pitted two competing hypotheses against each other: selective rehearsal and retrieval inhibition. Primarily, the current work explores a novel link between directed forgetting and associative memory, such that the item and cue are unitized and encoded together at study and at test, participants make their old/new judgement based on this association. Specifically, a more typical directed forgetting procedure where participants were told to remember specific items (R-cue) and forget others (F-cue) was compared with a procedure where participants were told to remember which cue (Blue-cue vs. Yellow-cue) was associated with each item. At test, …
Vaccine Knowledge And Vaccine Attitudes Of Undergraduate Nursing Students, Caitlyn Wilpstra
Vaccine Knowledge And Vaccine Attitudes Of Undergraduate Nursing Students, Caitlyn Wilpstra
Electronic Theses and Dissertations
Vaccine hesitancy is a growing threat to public health worldwide; however, the vaccine knowledge and attitudes of nursing students—a population of future immunizers and health promoters—are largely unknown. The purpose of this descriptive research study was to assess baccalaureate nursing students’ knowledge and acceptance of vaccinations as well as leading, self-reported vaccination influences in their lives. The sample consisted of 145 fourth-year nursing students at a Southwestern Ontario university who completed an in-class, online survey in February 2020 (pre-COVID-19 restrictions) consisting of the Vaccination Knowledge Scale, the Vaccine Acceptance Instrument, and demographic and vaccination influence questions. The participants were found …
Eating In The Anthropocene: Perceptions Of Dietary-Based Environmental Harm And The Role Of Plant-Meat Consumption, Allison Dawn Gray
Eating In The Anthropocene: Perceptions Of Dietary-Based Environmental Harm And The Role Of Plant-Meat Consumption, Allison Dawn Gray
Electronic Theses and Dissertations
Plant-meat, or a protein-based foodstuff representing an alternative to meat products, is increasingly lining grocery store shelves and filling the plates of consumers across Canada and beyond. Current plant-meat products even ‘bleed’ and taste similar to ‘real meat’ thanks to new technologies in processing the grains and legumes that comprises them. Simultaneously, individuals across the globe are increasingly aware of the myriad of ways animal agriculture and meat consumption are harming the natural environment through excessive emissions, pollution, and resource use. This awakening is embedded in a broader critical reflection of the role of humanity in contributing to a pending …
What Clients Say About Their Single Largest Change In Treatment: Comparing Sudden Gains Across Treatment Approaches And Phases Of Therapy, Orrin-Porter Morrison
What Clients Say About Their Single Largest Change In Treatment: Comparing Sudden Gains Across Treatment Approaches And Phases Of Therapy, Orrin-Porter Morrison
Electronic Theses and Dissertations
Sudden gains, or sharp decreases in client’s symptoms and distress, are highly predictive of positive therapy outcome. However, why sudden gains occur remains unanswered. This study sought to analyze the processes that arise during sudden improvements in symptoms by examining clients’ own insight into what they found to be helpful in therapy while focusing on phases of therapy and treatment approach as moderators of these change processes. To do so, an archive of weekly therapy session data was obtained of clients at an outpatient psychotherapy clinic. Therapy was provided by advanced graduate psychology students at a partnering university and consisted …