Digital Commons Network^™

The Impacts Of Permafrost Thaw Slumps On Arctic Stream Ecology, Maria Dolan

Theses and Dissertations (Comprehensive)

Climate change is intensifying permafrost thaw across terrain of the circumpolar Arctic. Increased temperatures and rainfall at northern latitudes have resulted in the expansion of thermokarst features such as retrogressive thaw slumps, which make previously frozen debris available for transport into nearby river systems. In the Peel Plateau, Northwest Territories, the mobilization of these materials exposes rivers to a large quantity of sediment and solutes that may act as a chronic, press disturbance, potentially altering stream food webs. Here, I examine if: 1) thaw slumps have driven changes to the physical and biological properties of slump impacted streams since an …

Children's Interpretation Of Others' Faces Covered With Medical Masks, Sevval Cinar

Theses and Dissertations (Comprehensive)

How we recognize and regulate emotions is fundamental to overall health and wellbeing. Emotional recognition and understanding are key to proper communication and emotion regulation. Barriers, such as masks, might have an impact on the way children recognize and interpret others' emotions, and therefore the way they learn, communicate, and regulate their own. The COVID-19 pandemic necessitated widespread mask-wearing, raising questions about its impact on children’s emotional development. Using a sample of children with varying levels of exposure to mask wearing adults (N= 13, ages 4 to 6), we investigated how prolonged mask wearing predicts emotion recognition, particularly …

Capital Structure Models And Contingent Convertible Securities, Di Meng

Theses and Dissertations (Comprehensive)

The 2007-09 financial crisis showed financial institutions are vulnerable during distressed times. As an alternative resolution to a government bail-out, contingent convertible securities (contingent capital or CoCos) were proposed by various researchers. CoCo is a hybrid capital security that converts from a bond to common equity when a pre-determined event occurs. The loss absorption mechanism of CoCo is essential to the financial health of a bank during a crisis as it provides an instant capital infusion when public capital is difficult to access.

In this thesis, we first implement a methodology to calibrate capital structure models for large Canadian banks. …

South-South Migration: Examining The Links Between Food Security And Migration From Ghana To Qatar, Bernard Owusu

Theses and Dissertations (Comprehensive)

This dissertation contributes to the migration-development literature by integrating food security into the analysis of South-South migration. While migration and development have been extensively studied, the connection between migration and food security remains underexplored, particularly in South-South migration contexts. The dissertation highlights the role of migration as both a coping strategy for food insecurity and a source of vulnerability for migrants in the specific context of temporary labour migration between Ghana and Qatar. Addressing this gap, the research examines how migration decisions are influenced by food insecurity in Ghana, the food security challenges faced by Ghanaian migrants in Qatar, and …

Structural Insights Into Peptidoglycan O-Acetylation In Gram-Negative Bacteria, Tyler Malloch

Theses and Dissertations (Comprehensive)

The Centres for Disease Control has acknowledged that we are entering a post-antibiotic era, where increasing numbers of bacterial pathogens are becoming resistant to known antibiotics. One of the most successfully targeted features of bacteria is also the main component of the cell wall, peptidoglycan (PG). PG is a heteropolymer of alternating sugar residues, namely N-acetylmuramic acid (MurNAc) and N-acetylglucosamine (GlcNAc) which are joined together by b-(1,4)-glycosidic bonds and crosslinked via stem peptide chains. PG is a target, readily lysed by exogenous and endogenous autolysins, such as lysozyme and lytic transglycosylase, respectively. This event leads to cell death …

Lichen It: Optimizing Post-Fire Caribou Lichen Transplantation And Assessment, Elise Brown-Dussault

Theses and Dissertations (Comprehensive)

Caribou lichen species are common in mid- to late-seral boreal forests, serving as an important winter diet staple for boreal woodland caribou. However, as climate change causes boreal wildfires to increase in size, severity, and frequency, available tracts of mature forest are decreasing, diminishing the extent of mature caribou lichen stands. Caribou lichens reproduce vegetatively, so bigger and more severe fires could exacerbate their dispersal limitations, potentially extending the timeline for caribou lichen stand recovery beyond 80 years. Trials have shown that “transplanting” caribou lichen fragments into disturbed areas can lead to the establishment of caribou lichen mats; as such, …

Fallow Fields Or Fertile Ground: Analysing Food Governance In A Changing World, Johanna L. Wilkes

Theses and Dissertations (Comprehensive)

Our food systems are failing us. In particular, industrial food systems fail to deliver healthy, adequate food to billions of people (FAO et al. 2019; FAO et al. 2024) and have led to increased instances of mental health crises for farmers (Jones-Bitton 2019; Younker & Radunovich 2021). In addition, industrial food systems contribute to the devastating impacts of a warming climate (IPCC 2021), biodiversity loss (WWF 2021), and soil erosion (Wise 2019; Badreldin and Lobb 2023) worldwide. Yet, little structural change has occurred in the way agriculture is governed and the problems created by industrial agriculture are becoming increasingly entrenched. …

To Encounter The Other? How Journalists Make Catholic Faith-Based Organizations In Mexico And Russia (In)Visible, Xochiquetzal Luna Morales

Theses and Dissertations (Comprehensive)

Catholic Faith-Based Organizations (CFBOs) in Mexico and Russia are unique entities of study and comparison to understand the power dynamics between majority/minority institutional religions and their media representation. Although both countries recognize their religious diversity, Catholicism is still the major religion in Mexico, not only because of its large number of adherents but also its significant cultural and political capital. In contrast, in Russia, Catholicism is considered a minority religion and is often viewed as foreign to Russian values and traditions. These conditions influence how CFBOs have been featured in the news media in both countries. However, no single factors …

Multi-Lingual And Cross-Domain Frontiers In Machine-Generated Content Detection, Gurunameh Singh Chhatwal

Theses and Dissertations (Comprehensive)

The rapid advancement of generative artificial intelligence, particularly Large Language Models (LLMs) such as GPT-4 and their multilingual capabilities, has significantly blurred the distinction between human-authored and machine-generated content. This technological evolution introduces critical challenges concerning the detection and attribution of textual authenticity and authorship, exacerbating societal issues like misinformation proliferation and compromising academic and professional integrity. Traditional detection methodologies, predominantly monolingual and heuristic-based, have demonstrated inadequate generalizability and efficacy against the sophisticated, multilingual capabilities of contemporary generative models.

This thesis addresses two major problems arising from these advancements. Firstly, it introduces novel multilingual detection methodologies explicitly designed to differentiate …

What Is Success? How Peer Support Workers In Ontario See Addiction & Recovery, Ngaire Rasmussen

Theses and Dissertations (Comprehensive)

The drug crisis in Canada has high mortality rates, especially in remote and rural communities, but there are significant barriers to accessing healthcare to which peer support may represent a partial solution, (Eddie et al., 2019; Englander et al., 2020; The Government of Canada, 2023; Kourgiantakis et al., 2023; Lavalley et al., 2020; Lennox et al., 202; Russell et al., 2021). Research how peer support workers define success in their work with adults experiencing addiction in Ontario, Canada is lacking, but important to understanding the crisis and implementing peer programs. Grounded in Marxist theory, the following exploratory research investigated the …

Exploring Canadian Social Work Students' Aphobic Attitudes: The Role Of Knowledge About Asexuality And Asexual People, Brianna V. Azzoparde

Theses and Dissertations (Comprehensive)

Aphobic attitudes are negative biases and prejudices against asexual individuals that can contribute to aphobic discrimination. While the Canadian Social Work Code of Ethics states that social workers should not discriminate and should provide culturally responsive services to marginalized populations, individually held aphobic attitudes have the potential to diminish one’s ability to provide culturally responsive services to asexual people. This national study examined aphobic attitudes among 326 Canadian social work students, exploring the relationship between knowledge about asexuality and aphobic attitudes, including controlling for demographic factors, social contact with asexuals, and social attitudes that previous research has identified as being …

Using Landscape Ecology And Spatial Statistics To Examine The Impacts Of Proposed Removals To Natural Heritage System And The Agricultural System Of Ontario’S Greenbelt, Brianna Downey

Theses and Dissertations (Comprehensive)

The 2022 proposed removals from the Greater Toronto Area (GTA), Southern Ontario’s Greenbelt would have resulted in negative impacts including, reductions to the size and functionality of the Agricultural System and Natural Heritage System, which are components of protected Greenbelt area. Several removal sites were located either on or in close proximity to corridor areas of the NHS, reducing connectivity and negatively impacting the surrounding ecological area. The removal of Agricultural land primarily consisted of corn and soybeans, as well as large removals of woodland, wetland, and shrubland class areas. The removal sites on local Agricultural composition and configuration were …

Don’T Stop Believin’: Emotion Beliefs And Daily Affective Experiences Across Adulthood, Jocelyn A. Rutledge

Theses and Dissertations (Comprehensive)

Emotion control beliefs reflect the extent to which people believe emotions “should” and “can” be controlled and have been linked to psychological well-being. Research has yet to examine age-related differences in these beliefs and their daily associations with affective experiences. The present study examines age differences in daily emotion control beliefs and their within-person associations with positive and negative affect. The study used 14-day daily diary data from an adult lifespan community sample (younger adults: 18-36 years old, N = 72; older adults: 66-92 years old, N = 66). The results revealed that older adults reported …

Contrasting Trajectories In Adolescent Pro-Environmentalism: Qualitative Differences Between “Engagers” And “Disengagers”, Jaida Brown

Theses and Dissertations (Comprehensive)

This qualitative study extends Krettenauer and colleagues' (2024) longitudinal research by examining how different developmental contexts shape divergent trajectories in adolescents' environmental engagement. We conducted semi-structured interviews with nineteen adolescents, focusing on two distinct groups: "Engagers" who showed remarkable increases in pro-environmental behavior from ages 13 to 17, and "Disengagers" who exhibited substantial decreases inengagement during the same period. While all participants reported meaningful childhood nature experiences, supportive family sustainability practices and access to environmental information through media, their developmental paths diverged significantly. Disengagers gradually deprioritized environmental concerns as other life goals took precedence, while Engagers actively expanded their environmental …

Unveiling Trauma And Seeking Justice: Exploring Mass Atrocities Against Tamils Through The Lens Of Religion, Culture, And Global Justice, Arrabe Vigneswaran

Theses and Dissertations (Comprehensive)

This paper examines the mass atrocities committed against the Tamil population in Sri Lanka, analyzing them through the interconnected lenses of religion, culture, and global justice. It explores how Sinhalese-Buddhist nationalism, codified through legal and constitutional mechanisms such as the Sinhala Only Act and state-sponsored cultural erasure, facilitated the systemic marginalization, displacement, and dehumanization of Tamils. The study investigates the legal, political, and cultural underpinnings of these acts ranging from war crimes and ethnic cleansing to potential genocide while assessing the reluctance of both domestic and international actors to enforce meaningful accountability. Drawing on hybrid court models, transitional justice theories, …

Examining Gender Differences In Heritage Language Maintenance And Loss Among South Asian First-Generation Canadians, And The Effect On Well-Being, Amreen Sangha

Theses and Dissertations (Comprehensive)

Language is prevalent in various aspects of life. Not only is it often essential for communication, but it also has deep roots within cultural contexts. Specifically, within South Asian culture knowing one’s heritage language is considered to be necessary when it comes to connecting with one's cultural group and identity. Heritage language maintenance can be seen differently within different individuals and have different implications for them. This study was designed to explore gender differences in heritage language loss as well as the role language may play in one’s well-being. Canadian-born South Asian children and young adults aged 10-25 completed an …

Examining The Impact Of Early Literacy Interventions On Teachers’ And Parents’ Learning And Perceptions Of Early Literacy Development, Abigael Mary Hogarth Todd Miss

Theses and Dissertations (Comprehensive)

Parents and teachers play a vital role in fostering early literacy development; however, many require additional training to enhance their understanding of alphabet knowledge and phonological awareness. This study examined the effectiveness of two instructional videos—one on phonological awareness and one on evaluating alphabet books—in increasing teachers’ (n = 35) and parents’ (n = 34) perceptions about these domains and the practical application of information covered in the videos. The 69 participants viewed each video, and results indicated a general decrease in confidence following exposure to these videos, likely reflecting an increased awareness of the complexity of the …

“We’Re Here, We’Re Queer, And We’Re Not Going Away” Student Policies And Lgbtq+ Students’ Experiences On Canadian Christian Campuses, Angela E. Gallo

Theses and Dissertations (Comprehensive)

Research highlights that Christian campuses are often unwelcoming and hostile spaces for lesbian, gay, bisexual, transgender, queer, and other gender and sexually diverse (LGBTQ+) students. Yet, research, including emerging Canadian research, often overlooks how institutional policies shape LGBTQ+ students’ experiences. Further, little attention is given to the affirming experiences LGBTQ+ students encounter on Christian campuses. Through a collective case study of two Canadian Christian universities involving document analysis and interviews, I explored the discourses that school policies constructed concerning gender and sexuality, LGBTQ+ students’ experiences of exclusion and affirmation, and how policy, alongside other factors, shapes their experiences and well-being. …

Technology-Enhanced Professional Development For Early Literacy: A Comparative Study Of Online Teacher Learning Models In Kenya, Constanza Uribe-Banda

Theses and Dissertations (Comprehensive)

Growing recognition of early literacy as essential for lifelong learning, along with evidence that teachers’ mastery of foundational literacy instruction influences student outcomes (Darling-Hammond et al., 2017; UNESCO, 2020), has led to increased investment in teacher professional development. Despite these efforts, many educators face significant challenges in accessing high-quality training, particularly in resource-constrained settings where geographical barriers and limited institutional support persist. This is especially true in rural Kenyan communities, where teachers often work in under-resourced schools with unreliable electricity and internet connectivity yet bear responsibility for laying critical literacy foundations. The present study examines the potential to deliver effective …

Negotiated Cultural Identity And Belonging Of Self-Identified Indo-Guyanese Immigrant Women, Neta (Goomatee) Deonarain-Gear

Theses and Dissertations (Comprehensive)

This dissertation examines how young, self-identified Indo-Guyanese women who immigrated to Southwestern Ontario in the 1970s negotiate cultural identity and belonging. Utilizing a bio-ethnographic bricolage narrative methodology, the study explores the impact of postcolonial diaspora and social displacement on these women’s experiences within the "third space" or borderlands. Grounded in relativist ontology and constructivist epistemology, storytelling serves as the primary data collection method through a critical theory lens. Interviews with 12 participants were analyzed thematically and reflexively, revealing how participants construct meaning and navigate cultural identities. The analysis, conducted through feminist, decolonial, and trauma-informed perspectives, offers insights into "psychological homelessness" …

Neighbourhood Resilience Planning With Renters In Hamilton, Ontario, Canada, Anna Do

Theses and Dissertations (Comprehensive)

This sequential mixed-methods study demonstrates the co-production of knowledge between academic researchers and local communities. Guided by the resilience planning framework, the study engaged 48 renters from the Beasley neighbourhood of Hamilton, Ontario, Canada in identifying stressful and supportive locations using a participatory mapping tool called the “Place Report.” A total of 74 Place Reports were submitted, with most reporting supportive places in or near Beasley. Thematic analysis revealed three overarching domains, and 13 themes related to the use and function of these locations. Places pertaining to food, housing, and physical activity emerged as the most frequently discussed topics. The …

Legislating Trans Lives: An Archival Analysis On Trans Canadian Rights, Charlie E. C. Davis

Theses and Dissertations (Comprehensive)

Previous research has outlined trans histories within the United States and Europe, illustrating historic transphobia, oppression and the origins of gender identity clinics. This type of historical literature is limited in the Canadian context, with more contemporary research demonstrating that trans people experience significant barriers to accessing healthcare, aversive health outcomes, and high rates of discrimination. Trans activists and advocates have always been and continue to resist these oppressive systems and have worked to improve the social and physical wellbeing of trans people in Canada. Utilizing archival data of trans activism and community mobilizing, I sought to address the gap …

Exploring Laurier Health Sciences Students’ Knowledge Of Lgbtq+ Health, Grace Emma Henry, Todd Coleman

Theses and Dissertations (Comprehensive)

In all health-related fields, the need for well-informed, holistic healthcare providers is paramount. For the heathcare field to be impactful in positive ways, providers should emerge from multifaceted academic backgrounds, equipped with an array of knowledge and skills to address the complex needs of different patients. Central to this is the idea that all aspects of an individual's identity and the intersectionality of these identities should be considered when providing care. Intersectionality recognizes that various social and personal identities, such as race, gender, sexuality, and socioeconomic status, intersect to shape individual experiences and health outcomes (Kelly et al., 2022).

Lesbian, …

A Pilot Study Examining Children’S Evaluations And Reasoning About Concealment And Instrumental Forms Of Antisocial Lying, Noah Battaglia

Theses and Dissertations (Comprehensive)

Children as young as 4 years of age judge self-benefitting lies (i.e., antisocial lying) as wrong. Although this has traditionally been interpreted as evidence that young children view honesty as a moral obligation, contemporary moral development theory and research suggests that right/wrong judgments fail to capture important aspects of children’s social cognition. Research from a perspective known as social domain theory (Smetana et al., 2014; Turiel, 1983) has shown that children’s understanding of morality (i.e., norms concerning others’ rights and wellbeing) is distinct from their understanding of other types of socially unacceptable behaviour. While children judge many social events as …

How The Story Of Jesus Is Aiding This Generation Of Ucc Clergy To Make Sense Of Their Vocation In A Secular Age, Sheila Macdonald Macgregor, Sheila G. Macgregor Rev.

Theses and Dissertations (Comprehensive)

This dissertation, an exercise in practical theology, undertakes two tasks. First, it explores the Christology of fourteen active United Church of Canada (UCC) clergy trained and/or ordained/commissioned in the first two decades of the twenty-first century. Secondly, given that their training, and the first years of their ministries, have taken place against a background of overwhelming secularism and unprecedented church decline, it also examines how their understanding of Jesus Christ and his story are aiding them to make sense of their vocation in a secular age. Charles Taylor’s 2007 magnum opus, A Secular Age provides the backdrop for this study. …

Immune Pathway Modulation In Melanoma Using Chitosan Nanoparticle-Mediated Dsrna Delivery, Bethel C. Iwuji

Theses and Dissertations (Comprehensive)

Cancer is a group of diseases characterized by abnormal and uncontrolled cell division, which typically results in the formation of tumours. Even with advances in treatments, cancer remains one of the leading causes of death globally. Melanoma is an aggressive form of skin cancer which is highly malignant, develops in the pigment-producing cells of the skin, melanocytes, and in the late stages of the disease poses a significant challenge for therapeutic intervention due to its multidrug resistance. The innate immune system is the first line of defence against invading pathogens, including viruses, bacteria, and fungi, and can recognize and destroy …

The Influence Of Self-Efficacy On Support Provision In People With Low Self-Esteem, Daniella Rinaldo

Theses and Dissertations (Comprehensive)

People with lower self-esteem (LSEs) tend to underestimate their capabilities and are reluctant to provide support to close others. The literature has primarily focused on how self-esteem affects individuals as support recipients. However, less is known regarding how to improve LSEs’ reluctance and perceived capabilities as support providers. The present research examines how LSEs could be led to be more willing to provide support to a close other through enhancing their support self-efficacy. I also examined whether LSEs (vs higher self-esteem; HSEs) differ in their abilities and perceptions of the support they provide. I hypothesized that encouraging LSEs to see …

An Antiviral Response Induced By Dsrna Against Vesicular Stomatitis Virus And Bovine Respiratory Syncytial Virus In Bovine Turbinate Cells, Carly Au

Theses and Dissertations (Comprehensive)

Canada is one of the largest beef exporters in the world. Viruses like vesicular stomatitis virus (VSV) and bovine respiratory syncytial virus (BRSV) can negatively impact the cattle industry, and a prophylactic treatment is needed to protect against these viruses. Viruses produce long (L)dsRNA (>30-40bp) during replication that is not found in healthy cells. As such, the innate antiviral immune response, including the RNA interference (dsRNAi) pathway, are stimulated by viral LdsRNA. When low concentrations of LdsRNA are present, the RNAi pathway is triggered resulting in the degradation of viral mRNA of matching sequence, halting specific viral protein production. …

Inductions Of Long-Term Potentiation With Biomimetic Electromagnetic Fields In Primary Neurons, Cooper E. Kansala

Theses and Dissertations (Comprehensive)

Endogenous brain rhythms guide neural communication and plasticity, raising the question of whether weak, temporally structured electromagnetic fields (EMFs) that mimic these rhythms can modulate neuronal activity in a targeted, biomimetic manner. This thesis investigates whether patterned EMFs designed to reflect the temporal structure of hippocampal long-term potentiation (LTP) are more effective at inducing neural plasticity than conventional sinusoidal fields or no stimulation at all. Cortical neurons cultured from postnatal rats were exposed to patterned EMFs for 30 minutes and assessed across three distinct experimental domains. In Chapter 2, microelectrode array (MEA) recordings revealed that the LTP-patterned field significantly increased …

Nature For All? Assessing Equitable Public Access To National Urban Parks In Canada: A Comparative Analysis, Andrew Tenute

Theses and Dissertations (Comprehensive)

The number of health challenges is rising both globally and in Canada. Research consistently shows that time spent in nature can mitigate some of these health challenges, offering significant mental, physical, and well-being benefits. Parks and protected areas in Canada, including the expansion of the National Urban Park (NUP) program by Parks Canada, provide valuable opportunities for nature-based engagement. However, access to these spaces is unjust, as many individuals face structural, intrapersonal, and interpersonal constraints. While prior studies have explored the motivations and well-being outcomes of women and Black, Indigenous, and People of Colour (BIPOC) individuals, there remains a limited …