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Graduate Theses & Dissertations
Pages
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- Electrochemical versus Chemical Oxidation of Bulky Phenols
- Phenolic compounds are used in industry, such as agriculture and biotechnology, and inevitably end up in our environment. These compounds may serve as a phenolic precursor to produce raw materials for a wide range of applications. Chemical oxidation has been the common synthetic pathway to oxidize phenols and related compounds. However, traditional chemical approaches suffer from use of harsh chemicals, waste generation, and lack of reaction selectivity. Electrochemical synthesis has emerged as an alternative method to mitigate common challenges associated with organic synthesis. Herein, electrochemical oxidation of 2,6-diphenylphenol (DPP) and 2,2-dihydroxybiphenol (DHBP) was carried out and compared to traditional chemical oxidation. Contrasted with chemical oxidation, cyclic voltammetry of DPP resulted in a range of products based on the specific potential ranges used, whereas chemical oxidation of DHBP yield a dark-coloured polymeric product. The electrooxidation and chemical oxidation of DPP and DHBP resulted in a solution colour change, indicative of the formation of new, but different products monitored by UV-vis, and characterized by nuclear magnetic spectroscopy (NMR), X-ray single crystal diffraction, IR spectroscopy, transmission electron microscopy (TEM), and gas chromatography-mass spectrometry (GC-MS). The data indicate that the synthetic outcomes are dependent on the synthetic methodology employed, and that electrooxidation and chemical oxidation can form products unique to the pathway utilized. Author Keywords: chemoselectivity, electrochemistry, phenols, radical, synthesis
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- From Cultural Barriers to Educational Breakthroughs
- This study examines critical pedagogy as a novel approach to diversity, equity and inclusion (DEI) education at Peterborough Police Service (PPS). To begin, the present study examines hypermasculinity and isolationism as cultural traits in policing that serve as barriers to DEI education. Later, results of focus groups with PPS members that investigated negative and positive experiences with DEI training, barriers to meeting DEI education outcomes and, perceived goals of future DEI education at PPS are discussed. Drawing from findings from the literature review and focus groups, this thesis argues that critical pedagogy offers a useful framework to explore divisive subjects like systemic racism, power and privilege, colonialization, etc. and contributions of police in maintenance of the status quo. Raising the critical consciousness of PPS members by unveiling systems of domination may provide a starting point for enhancing police service to groups that are racialized and minoritized. Education of this kind may also involve a reconceptualization of the role of police as allies to marginalized communities. Author Keywords: Community, Critical Pedagogy, Diversity, Education, Police, Police Culture
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- Beyond Beads
- Burials at the Early Bronze Age IA (c. 3700-3400) cemetery of Fifa, Jordan included a variety of grave goods including beads. These were made of glazed steatite or carnelian. This thesis utilizes use-wear analysis, SEM-EDS, XRD, and a database of 5th and 4th millennium BCE beads in order to build life-histories for Fifa’s beads. Beyond focusing on how the beads were manufactured, where they were produced, how they travelled to the Fifa cemetery, and how they were used at the cemetery, the symbolic and contextual meanings of both types of beads are also explored. I argue that Fifa’s glazed steatite beads were manufactured in Upper Egypt while its carnelian beads were produced in Northwest Arabia. Their exchange facilitated economic and social connections. Both types of beads were likely used for their protective qualities with glazed steatite also potentially assisting in the successful reincarnation of deceased subadults. Author Keywords: Beads, Carnelian, Glazed Steatite, Levantine Archaeology, Mortuary Archaeology, Use-wear Analysis
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- Rural Older Adult Transitions in Care
- Aligning health services with aging populations is the fundamental issue of modern Canadian health policy, yet rural older populations still experience compromised patient safety and poor-quality care as they transfer between care settings. As such, contemporary scholars acknowledge that more contextually sensitive studies are needed to better understand the unique health and care experiences of this vulnerable population across the care continuum. Informed by inquiry in critical gerontology, health services and human geography, my dissertation attends to this gap in research by revealing the interplay between older adult health construction and the influence of multidimensional contexts on rural older adult transitions in care. Using a community-based approach, I conduct a case study on Haliburton County that encompasses three phases (e.g., a rural community inventory, go-alongs and semi-structured interviews) and focuses on two types of transitions in care (when an older adult is transferred from a hospital to a long-term care home and when an older adult is transferred from a hospital to a home in the community). In total, 19 patients, 24 informal supports, 51 front-line staff and five administrators/managers participated in my dissertation, resulting in 99 total participants being included in 19 go-alongs and 85 semi-structured interviews. My results indicate that multi-leveled facets of the rural care context continually attend to and hinder rural older adult health during transitions in care. In particular, sectored divisions, urban centrism, biomedicine and ageism inhibit rural care providers from leveraging their strengths to attend to the heterogeneity of rural older adult health and the nuances of rural care contexts. I then argue the need for macro health systems reform to embrace the relationality of rural older adult transitions in care and to capitalize on the strengths inherent in rural communities. To foster knowledge mobilization of my findings, I provide a foundation of information and recommendations for the community partners (Haliburton Highlands Health Services and Seniors Care Network) as well as questions to inform research, policy and practice. Establishing the first study of rural older adult transitions in care where a researcher accompanies older adults and their informal supports across care settings, my dissertation will help prepare Canada for the impact of the aging population and transform transitional care provision to meet the needs of all Canadians in the 21st century. Author Keywords: Canada, Geriatric Care, Health Care, Older Adult Health, Rural Health Care, Transitions in care
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- Final Makeover, Deindividualization of Women in Contemporary Death Notices
- As a result of the COVID-19 pandemic, print death notices have increased in number, length, and deviations, often as the only form of public recognition for the deceased. This thesis provides close readings through feminist and anti-ageist lenses of ninety print death notices, published in The Peterborough Examiner and Peterborough This Week between October 2019 and October 2021. These readings inform and illustrate the deindividualization of older women in death notices as the product not only of the limitations of language and format, but of a community that panders to regional public interests and traditional ageist tropes of femininity to create worthy public subjects. An exploration of ambiguities, contradictions, and overdeterminations that break with conventions of death notices reveals unintentional makeovers, deindividualization, and the sidelining of older women as subjects of their own memorials and photos in an extension of the systemic and internalized gendered ageism older women experience in life. Author Keywords: Ageism, COVID-19, Death Notices, Deindividualization of Women, Feminism, Older Women
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- Anishinaabe Motherhood
- The purpose of this qualitative study is to investigate Anishinaabe women’s Traditional Teachings and pedagogies in a contemporary context. Through this exploration, I have uncovered the tensions, challenges, and strengths that Anishinaabe gaashiyag (mothers) face when engaging with these Traditional Teachings and pedagogies. The research methodology I have used is a branch of grounded theory called the Anishinaabe Research Methodology, and it is integral to the Anishinaabe principles of living called the Seven Grandparent Teachings: Wisdom, Love, Respect, Bravery, Honesty, Humility, and Truth. I used a research method called the Nbwaachiwi (the art of visiting) method. I used the ‘Aunties kitchen table’ style of knowledge collection, where it is open-ended and one-on-one - like you would be at your auntie's kitchen table, sharing stories and having tea. By utilizing these principles, I conducted my research through the Anishinaabe-aadiziwin (culture and language – way of life) paradigm. I addressed multilayered Anishinaabe teachings and many connections to the land and spirituality. I have found that Anishinaabe gaashiyag feel pressure to adopt Western modes of raising their children. However, some young women are returning to the traditional Anishinaabe teachings by using traditional birthing techniques, tiknigaans (traditional baby carriers), and evolving our cultural practices to fit modern ways of living. The knowledge I present within this paper can inform mothers who want to learn Traditional Teachings and pedagogies, and thereby resist ongoing intergeneration trauma and colonization. New generations are identifying what the negative effects on raising Anishinaabe children and taking a stand to break ongoing trauma and abuse so that their children do not have to be subjected to it. These mothers are informed about cultural and Traditional Teachings with the hope that they can use this knowledge to assist them on their path to, and during, motherhood. Given the determination of these young mothers to raise their babies using Anishinaabe traditional methods, the future identities and lives of their children may be significantly better in a cultural sense than their predecessors. They will be the products of their mothers’ commitment to the resurgence of Anishinaabe maternal teachings and pedagogies. Author Keywords: Anishinaabe, Indigenous Motherhood, Motherhood, Parenting, Pedagogies, Teachings
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- Family Experiences in Nature
- Children may be spending less time outdoors in nature than in previous generations, with one potential reason being parents in their role as ‘gatekeepers’ to the outdoors. This study investigated how families are spending their time during the COVID-19 pandemic, and how parents may influence children’s outdoor nature experiences. Parents (N = 121) from across Canada completed measures related to their family’s activities as well as their own connection with nature, attitudes about nature, and childhood nature contact. Results suggest that having easy access to nature, a greater connection with nature, believing in the importance of outdoor experiences, and doing outdoor activities in childhood may be associated with more current family time outside in nature. By understanding the reasons behind parental decisions regarding where and how families spend time outside, strategies can be developed to help parents increase their children’s nature time in the future. Author Keywords: children, family, nature, nature-relatedness, outdoors, parents
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- Relationships between bird densities and distance to mines in Northern Canada
- Increased mining activity in the Canadian Arctic has resulted in significant changes to the environment that may be influencing some tundra-nesting bird populations. In this thesis I examine the direct and indirect effects of mining on birds nesting in the Canadian Arctic. I first perform a literature review of the effects that mining in the Arctic has on northern environments and wildlife and outline several ways in which mines affect Arctic-breeding birds. By using the Program for Regional and International Shorebird Monitoring (PRISM) Arctic plot-based bird survey data from across the Canadian Arctic, collected from 1995 to 2018, I identify the effects of distance to mining operations on the occupancy patterns of Arctic-breeding bird species. Six species’ densities were significantly impacted by mine proximity (Canada/Cackling Goose, Long-tailed Duck, Long-tailed Jaeger, Pectoral Sandpiper, Savannah Sparrow, and Rock Ptarmigan) across five major mine sites. Each species has its own unique relationship to distance from mining activity. Author Keywords: Bird populations, Canadian Arctic, Mining, Mining activities, PRISM, Tundra-nesting birds
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- Behavioural ecology and population dynamics of freshwater turtles in a semi-urban landscape at their northern range limit
- Species are faced with a variety of challenges in the environment, including natural challenges, such as variability in ambient temperature, and anthropogenic threats, such as habitat transformation associated with urbanisation. Understanding how animals respond to these kinds of challenges can advance the field of behavioural ecology and guide management decisions for wild species. Yet, we still have limited understanding of the extent of natural and human-caused impacts on animal behaviour and population dynamics, and lack robust assessment of behaviour in free-ranging animals. Using novel miniaturised biologging technologies, I characterised and validated behaviour in two freshwater turtle species: Blanding’s turtles (Emydoidea blandingii) and Painted turtles (Chrysemys picta). Further, I investigated how these two ectothermic species navigate a thermally heterogeneous landscape near their northern range limit, by comparing selected and available ambient temperatures. I showed that turtles preferred locations that were, on average, warmer and less variable in temperature than the available environment, and that this thermal sensitivity was greatest early in the year, and at fine spatial scales that likely matched the species' perception of the environment. Lastly, I assessed whether urban development was compatible with long-term viability of a Blanding’s turtle population, by monitoring habitat change and turtle survival over one decade of ongoing residential and road development. I found that Blanding’s turtle habitat quantity and connectivity declined in the area, which coincided with high road mortality and severe declines in turtle survival and population size, especially in adult females. I concluded that urban development and current road mortality rates are incompatible with the long-term viability of this at-risk turtle population. Overall, my findings demonstrate the importance of variation in the thermal environment and anthropogenic impacts on habitat in shaping the behaviour and population dynamics of this species-at-risk. Author Keywords: animal behaviour, biologging, ectotherms, habitat selection, temperature, urbanisation
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- Digital Labour and Working From Home
- This thesis examines the impact that digital labour and work from home have across different populations. This work is framed with regards to Marxist-feminism and particularly examines the impact of work from home across different genders. To demonstrate the depth and breadth of the impact that work from home has on worker agency, four unique industries are analyzed: office jobs, gig economy, affect labour, and sex work. Additionally, the lens of critical race theory is invoked to highlight the distinct challenges that BIPOC workers face in the transition to digital labour. This thesis would not be contemporary without addressing the COVID-19 pandemic which was occurring during the time of its writing. This thesis uses those established lenses of gender, industry, and race to examine the effects of the COVID-19 pandemic on the workplace and home (office). Work from home increases the amount of labour that needs to be performed by each worker in exchange for some flexibility and agency in some domains. Author Keywords: Covid-19, Digital Labour, Hybrid, Work from Home
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- Organic Matter and Total Mercury in Acid-Sensitive Lakes in Ireland
- The following study measured dissolved organic carbon (DOC) and total mercury (THg) concentrations in acid sensitive lakes in the Republic of Ireland. Sixty-eight upland lakes and 48 lowland lakes were sampled for DOC; the upland lakes were additionally sampled for THg. Spatial variability of DOC was explained by regional precipitation and soil organic matter. A subset of lakes was tested for long-term trends and in contrast to reports of rising DOC in European surface waters, changes in DOC were minor. Spatial variability in THg was explained by DOC and organic matter aromaticity. Long-term THg concentrations increased, likely caused by inputs of terrestrial THg. A subset of lakes was sampled for sediment and soil and the results suggested soils drove THg variation in lake water and sediment. Lake water and sediment THg was low and consistent with background regions, while soil THg was relatively high due to high organic content. Author Keywords: Dissolved Organic Carbon, Lakes, Organic Matter, Soil, Total Mercury, Water
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- What Happens in Childhood, Does Not Stay in Childhood
- Researchers have found associations between attachment, childhood adversity, and posttraumatic stress symptoms; however, the underlying mechanisms between these variables remains unknown. The present study explored the moderating effects of childhood adversity on the relationship between adult attachment and posttraumatic stress symptoms in two samples. In total, 533 undergraduate students and 357 individuals recruited from online communities completed measures of childhood adversity, adult attachment, and posttraumatic stress symptoms. Hierarchical regression analyses were used to test the moderating effect on childhood adversity. One-way ANOVA post hoc analyses were run to assess mean differences of attachment and posttraumatic stress across five childhood adversity groups. The results suggested that attachment and childhood adversity do predict posttraumatic stress symptoms; however, there was no significant moderating effect of adversity found. The post hoc analyses revealed significant mean differences for secure attachment, avoidant attachment, and posttraumatic stress symptoms. The findings suggest that attachment and childhood adversity are significantly associated with posttraumatic stress symptoms. Author Keywords: adult attachment, childhood adversity, posttraumatic stress symptoms, trauma