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Size And Shape Control In Metal Nanoparticles And Nanocomposites, Tomendro Subedi

Theses and Dissertations (Comprehensive)

This thesis describes major findings on the shape transformation of the precursor silver decahedral nanoparticles (AgDeNPs) with pentagonal symmetry and twin defects into silver pentagonal prism nanoparticles (AgPPNPs) using Br¯ as a shape selective reagent. Silica-encapsulation of the gold-plated AgDeNPs was also carried out forming ordered arrays of silica encapsulated gold-plated AgDeNPs (SiO₂@Au@AgDeNPs) of different sizes. At first, synthetic procedures for AgDeNPs (pentagonal bipyramids), silver pentagonal rod nanoparticles (AgPRNPs) and gold-plating of AgDeNPs (Au@AgDeNPs) were optimized. Gold plating enhances the chemical stability of AgDeNPs and preserves the superior plasmonic properties of silver. This thesis deals with the transformation …

Climate And Capitalism: English Perceptions Of Newfoundland's Natural Environment And Economic Value, 1610-1699, Joshua Tavenor

Theses and Dissertations (Comprehensive)

For English merchants, planters and politicians, colonizing Newfoundland required learning the limitations and opportunities afforded by the island’s natural environment. The crucial period for this learning process took place from 1610, the first English effort to colonize the island, to the 1699 passing of the Act to Encourage the Trade to Newfoundland, which defined the cod fishery as the island’s only viable industry. During these eighty-nine years, English enterprises and policies consistently failed to meet the expectations of their backers, and new information challenged accepted ideas about Newfoundland’s climate and natural resources, pressuring the supporters of those decisions to …

Narrative Pleasures And Feminist Politics: Popular Women’S Historical Fiction, 1990-2015, Victoria Kennedy

Theses and Dissertations (Comprehensive)

This dissertation contributes to a developing body of work on women’s historical fiction and its significance to feminist discourse. Building from Diana Wallace’s 2005 study The Woman’s Historical Novel: British Women Writers, 1900-2000, I offer a modified definition of “the woman’s historical novel” and a transatlantic consideration of several of the most popular titles in the contemporary period, including The Other Boleyn Girl (2001), Outlander (1991), A Great and Terrible Beauty (2003), and Scarlett (1991). Several studies have followed Wallace’s, notably Ann Heilmann and Mark Llewellyn’s Metafiction and Metahistory in Contemporary Women’s Writing (2007) and Katherine Cooper and Emma …

Three Essays On Liquidity In Modern Markets, Konstantin Sokolov

Theses and Dissertations (Comprehensive)

Recent technological advancements have challenged financial markets. Academic researchers, regulators and market participants voice concerns that modern markets bear the negative externalities of such advancements. Specifically, they are concerned that today’s markets are becoming more fragile and unfair to less sophisticated traders. This work employs empirical methodology to test whether these concerns are justified. This thesis contains three essays:

The first essay studies whether modern markets become less liquid during intraday extreme price movements (EPMs). When a price moves in a certain direction, liquidity providers face two opposing incentives. The first incentive is to stay in the market to accumulate …

A Comprehensive Study Of Personal And Social Information Use In Female Brown-Headed Cowbirds, Molothrus Ater, Hayden Davies, David J. White

Theses and Dissertations (Comprehensive)

Brood parasites face considerable cognitive challenges when locating and selecting host nests for their young. One aspect of this challenge is determining how to use different sources of information to make decisions regarding the quality of a prospective nest. Here we investigate how female-brown-headed cowbirds, Molothrus ater, use information when prospecting for nests, and then expand upon this to investigate decisions related to foraging. In chapter 1, we demonstrated female could use social information acquired from observing the nest prospecting patterns of conspecifics to influence their own patterns of nest selection. Furthermore, we found a negative relationship between a …

First Nations And Adaptive Water Governance In Southern Ontario, Canada, Thomas Dyck

Theses and Dissertations (Comprehensive)

Water quality and quantity are prominent concerns for First Nations across Canada. The federal government shares the responsibility with First Nations to ensure water resources on-reserves meet the needs of First Nations. Federal approaches have been predominantly technical, focused on addressing issues related to infrastructure, maintenance, training, and monitoring. This approach is important. However, water issues concerning First Nations go beyond technical issues and relate to inadequate participation in decision making, poorly defined roles and responsibilities, and approaches to managing water resources on-reserve that have not accounted for local context. These issues parallel historical nation-to-nation (i.e., First Nations and federal …

"Going The Distance So Our Food Doesn't Have To": Case Studies Of Creative Public Procurement At Canadian And Uk Universities, Lori Stahlbrand

Theses and Dissertations (Comprehensive)

This dissertation explores three efforts to develop sustainable local food systems at public universities in Canada and the UK. One is a partnership between the Canadian non-profit, Local Food Plus (LFP), and the University of Toronto (U of T). The other two are partnerships between the UK non-profit, the Soil Association (SA), and two British universities – Nottingham Trent University (NTU) and the University of the Arts London (UAL). In all three cases studies, a formal certification program to support the transition to more sustainable local food systems was a central feature. The author of this dissertation was the founder …

The Science Of Defence: Security, Research, And The North In Cold War Canada, Matthew Shane Wiseman

Theses and Dissertations (Comprehensive)

This dissertation examines the development and implementation of federally funded scientific defence research in Canada during the earliest decades of the Cold War. With a particular focus on the creation and subsequent activities of the Defence Research Board (DRB), Canada’s first peacetime military science organization, the history covered here crosses political, social, and environmental themes pertinent to a detailed analysis of defence-related government activity in the Canadian North. Three contextual chapters on the history of federal defence research in Canada provide the foundation for a close study of defence research projects pursued and supported by the Canadian government. The dissertation …

Students' Experiences Of The Scent-Free Initiative At The Faculty Of Social Work, Tanya Marie Smith

Theses and Dissertations (Comprehensive)

This research project sought to explore how students experienced the introduction of a scent-free initiative within the Faculty of Social Work at Wilfrid Laurier University. An intersectional, critical disability approach is used to understand participants' experiences and to identify gaps in implementation, as well as recommendations for future policy development. Working from a transformative paradigm, this study used a mixed methods design, including an online survey and in-person focus groups. Findings indicate that social work students felt well-informed about the initiative, however they did not feel adequately knowledgeable about how to embody the initiative via scent-free practices. Participants expressed stigmatizing …

Reflexivity And Organizational Culture: A Comparative Case Study, Chloe Frisina

Theses and Dissertations (Comprehensive)

This research explores how reflexive practices are shaped by organizational culture. For the purposes of this study reflexivity is defined as a self-critical approach that involves examining how knowledge is created, how one may be complicit in relations of knowledge and power, and the potential consequences for inequality and privilege (D’Cruz, Hemmingham, & Melendez, 2007, p. 86). Organizational culture is defined as the shared norms, beliefs, and expectations that often drive behavior and create the social milieu that shape the objectives of the work accomplished and communicate what is important within the organization (Hemmelgarn, Glisson, & James, 2006, p. 75). …

Learning And Working Together: Invoking Systems’ Change Through Inter-Organizational Collaborative Principles And A Learning Community Framework, Brandon Hey

Theses and Dissertations (Comprehensive)

Local communities face significant challenges such as increased inequality, immigration, and global climate change. In order to address these challenges whole cities have to innovate and learn together. In this thesis, I introduce the Learning Community (LC) model, a new way of collaborating and creating collective impact that emphasizes learning, alongside collective impact, as a central strategy to addressing complex social challenges. In a LC, members value the continuous pursuit of knowledge, feedback, and experimentation as well as the flow of information and resources between academic institutions and practice groups. The value of learning is built into key structures …

Bye Bye Binary: Exploring Non-Binary Youths' Experiences Of Mental Health, Discrimination, And Community Belongingness, Ellis Furman

Theses and Dissertations (Comprehensive)

In recent years, there has been an increase in research focusing on the impacts of social exclusion and discrimination on the mental health of transgender populations. Despite this, few studies have focused on the experiences of gender non-conforming, or “non-binary” individuals. This community-based participatory research (CBPR) study (N = 10) used the arts-informed method of body mapping, individual interviews, and group discussions to examine non-binary young peoples’ experiences of discrimination in relation to mental health. Participants consisted young people (ages 16-25) living in Waterloo, Ontario. A visual analysis, thematic analysis, and member-checking session were employed to analyze collected data. …

Dynamic Assessment Of Early French Immersion Literacy Learning Competencies, Alexandra Bellissimo

Theses and Dissertations (Comprehensive)

French Immersion programming in Canada is not always an inclusive environment for all learners. Students with language disabilities or delays are often placed into English-only programming when difficulties arise in French immersion programming. This study aimed to establish a method of identification of reading difficulties, in either language, early in the reading process. Such an assessment would allow educators to intervene and assist these students, and all students, with reading and vocabulary development in their second language of French before these language issues can negatively affect learning.

Essential to language learning in immersion programs is the development of speech perception …

Young Leader's Sustained Engagement In Environmental Action: A Narrative Inquiry, Sara Wicks

Theses and Dissertations (Comprehensive)

Young people have been identified as key stakeholders in taking a leadership role in addressing environmental issues, but more research is required to find out how to sustain young people’s motivation for environmental action over time. The present study investigated this through narrative interviews with eleven environmental leaders who attended a conference called IMPACT! Youth Conference for Sustainability Leadership in 2009 or 2011. Drawing upon the literature on life paths to environmental action (Almers, 2013; Chan, 2009; Chawla, 1998, 1999; Harré, Tepavac, & Bullen, 2009) the interviews incorporated an exercise that asked participants to plot important events in their lives …

Determination Of Silver Binding To Natural Organic Matter Using Ion Selective Electrode, Mona Muhawwis Alshammari

Theses and Dissertations (Comprehensive)

Natural organic matter (NOM) is considered an important factor in the protection of the aquatic environments; organic ligands can complex with metals, to decrease their toxicity and bioavailability. NOM is measured as dissolved organic carbon (DOC) in mg C/L. Silver metal can enter into the aquatic environment from natural and anthropogenic sources, and is found in different chemical forms. Free silver ion (Ag+) is considered as the most toxic form of the metal. However, it can form complexes with both inorganic and organic ligands, such as ammonia, chloride, hydroxyl, carbonato, phosphato, and thiol groups. Thiol is the most important ligand …

The Social Self-Compassion Scale (Sscs): Support For A Multi-Domain View Of The Self-Compassion Construct And Its Relevance To Anxiety, Alison Flett

Theses and Dissertations (Comprehensive)

Self-compassion refers to the tendency to be kind and understanding towards oneself in times of failure rather than responding to such situations with harsh self-criticism. There is reason to believe on the basis of existing research that self-compassion is particularly relevant within the social domain. As such, this thesis is focused on describing and evaluating the Social Self-Compassion Scale (SSCS), which was developed for the purposes of this research and measures the degree to which individuals tend to be kind and understanding towards themselves when confronted with social adversity. This thesis begins by describing Studies 1 through 3, which were …

Moving And Improving: Investigating Physical Activity Patterns For Children With Autism Spectrum Disorder (Asd), Kristen Wright

Theses and Dissertations (Comprehensive)

The primary characteristics of ASD fall into three broad categories: communication problems, difficulty relating to people, things and events, and repetitive body movements and behaviours. According to the Government of Canada, in 2015, the prevalence of ASD was approximately 1% in North America and rising. The Canadian Physical Activity guidelines state clearly that the majority of elementary and secondary school aged children and youth (5-17 years old) should participate in 60 minutes of moderate-to-vigorous physical activity daily. Unfortunately, only 9% of this general population has been successful in obtaining the suggested amount of physical activity daily. However, for individuals with …

Three Essays On Corporate Governance And Politically Connected Firms, Justin Mindzak

Theses and Dissertations (Comprehensive)

In this dissertation three essays on corporate governance and politically connected firms are presented. The first essay “Interlocked Boards of Directors, Corporate Governance and Earnings Quality” studies the effects of interlocked boards of directors on voluntary governance disclosures, governance practices and earnings quality. The Canadian environment, where director interlocks are prevalent, is examined. A checklist of twenty voluntary disclosure measures from proxy statements is developed and a direct measure of interlocking directorships is employed. It is found that interlocked boards of directors are negatively associated with voluntary governance disclosures and positively associated with earnings quality. From an accounting perspective, greater …

Exploring The Middle Path: Effects Of Ethical And Secular Mindfulness On Well-Being And Prosocial Behaviour, Siyin Chen

Theses and Dissertations (Comprehensive)

Mainstream mindfulness programs generally remove Buddhist ethics, causing some to worry they may encourage self-indulgence and have limited capacity to promote well-being. We compare the effects of secular and ethical mindfulness (incorporating principles of non-harm and interdependence) on well-being and prosocial behaviour. Participants (N = 621) completed six days of ethical or secular mindfulness or active control exercises. Secular and ethical mindfulness practices both reduced stress and self-image concerns, and increased life satisfaction and self-awareness. Ethical mindfulness also enhanced personal growth. Participants were also invited to donate to a charity. Both mindfulness practices potentiated effects of trait empathy on …

Investigating The Effects Of Mindfulness On Children’S Executive Function, Emotional Regulation, Stress, And Academic Performance Compared To A Control Condition, Lerna Hanceroglu

Theses and Dissertations (Comprehensive)

Mindfulness is a growing field in the study of psychological well-being, with reports of individuals experiencing increases in resilience and reduced stress. The current research on mindfulness lacks information on a comprehensive analysis on the relationship between mindfulness and executive function, emotional regulation, stress, and subsequent academic performance for children. Additionally, studies contain methodological issues, such as the absence of active control groups. Hence, the current study assessed the effects of mindfulness training on children’s executive function, emotional regulation, stress, and academic outcomes compared to an active control group. There were 51 younger children from grades 2 to 4 (Mean …

The Experiences Of Athletes, Parents, And Coaches With The Long-Term Athlete Development Model (Ltad) In Youth Soccer Academies, Kody Watson

Theses and Dissertations (Comprehensive)

The Long-Term Athlete Development Model (LTAD) has been developed to allow children the best chance of engaging in lifelong sport and physical activity. The LTAD focuses on long-term development, not short-term success, which allows for the best opportunity of sport participation and optimal sport potential throughout life (Balyi, Way, & Higgs, 2013). Research surrounding the LTAD model has stated that there is a lack of empirical evidence of the model being utilized within sport, as some researchers believe that it is more theoretical than practical (Lloyd & Oliver, 2012). However, even with this criticism of the LTAD model, Canadian sport …

"The Outside Of The Inside;" Experiences Of Discovering Home And Community Within Waterloo Region, Nicole Greig

Theses and Dissertations (Comprehensive)

Abstract: The primary purpose of this research study is to explore the narratives of individuals experiencing homelessness within Waterloo Region as well as the practices of those working with the homeless population. The experience of homelessness is often met with an intersection of complex issues including mental health, substance abuse, deteriorating physical health, trauma, etc. Within this study, the concept of “home” and “community” are explored through the lens of homeless men living with these complicated challenges within the context of Waterloo Region. This qualitative study consisted of semi-structured interviews with six service providers and twelve men who were currently …

Experiences Of Racialized Service Providers Who Work With Racialized Clients: Functions And Constraints Of Master And Counter-Narratives Of Helping, Racism, And Vicarious Racism, Prapti Giri

Theses and Dissertations (Comprehensive)

What are the experiences of racialized frontline workers? How do they experience vicarious racism? I interviewed 8 frontline workers who were involved in counseling racialized individuals. The narrative paradigm, constructivist self-development theory (CSDT), and critical race theory (CRT) were the theoretical frames that guided the interviews and data analysis in order to answer these questions. I conducted a structural narrative analysis, which revealed how participants utilized assumptions from master narratives and at other times countered them. Interviewees occasionally stepped outside of the master narrative entirely, for example, by rejecting the categorization of race. According to CSDT, our meanings are determined …

Theories Of The Self, Race, And Essentialization In Buddhism In The United States During The “Yellow Peril,” 1899-1957, Ryan Anningson

Theses and Dissertations (Comprehensive)

This dissertation is an intellectual history tracing developing notions of the Self in Buddhism through Buddhist publications during the years from 1899-1957. I define this time period as the Era of the Yellow Peril, due to common views in the United States of an Asian “other” which formed a larger clash of civilizations globally. 1899-1957 was marked by pessimism and dread due to two World Wars and the Great Depression, while popular and academic cultures argued for the validity of race sciences, and the application of these “sciences” through eugenics. Buddhism in the United States was created through a global …

Going Beyond The Best Insufficient Option: An Exploration Of Social Entrepreneurship Initiatives Within Two Non-Profit Social Welfare Organizations In Ontario, Amy Joyce Shuttleworth

Theses and Dissertations (Comprehensive)

Facing a backdrop of decreased government funds and an increasing need for services, social service non-profit organizations are struggling to survive and provide services to their communities. One proposed solution to this financial struggle is to generate revenue through social entrepreneurship and social enterprise. Two non-profit organizations in Ontario have engaged in social enterprise and they form the basis for this case study. Adopting a hybrid social enterprise model, Organization X and Housing Corporation A receive revenue from three main sources: government funding, private donations, and profits created through social enterprise activities.

These organizations have managed to broaden their service …

Shifting Pedagogy For Adolescent Refugees With Limited Or Interrupted Formal Education: A Case Study Of The Professional Experiences Of A Secondary English Literacy Development Teacher, Stephanie Ledger

Theses and Dissertations (Comprehensive)

In recent years, there has been a large influx of refugees into settlement countries worldwide. In Canada, this displaced population includes many adolescent students of limited or interrupted formal education (SLIFE). Consequently, secondary school teachers are challenged to meet the print literacy needs of SLIFE within traditional ESL instructional settings.

The literature reveals an urgent desire and need for the use of early literacy instructional practices to address the print literacy needs of SLIFE. Despite this acknowledgement, many ESL/ELD secondary school educators are reluctant to shift their pedagogy from traditional ESL to early literacy pedagogy (Dooley, 2009; Dooley & Thangaperumal, …

Permafrost Thaw Induced Changes To Runoff Generation And Hydrologic Connectivity In Low-Relief, Discontinuous Permafrost Terrains, Ryan Connon

Theses and Dissertations (Comprehensive)

Recent climate warming in northwestern Canada is occurring at an unprecedented rate in recorded history and has resulted in the widespread thaw of permafrost. Where present, permafrost exerts a significant control on local hydrology, and disappearance of permafrost threatens to change the hydrology of northern basins. In the peatlands that characterise the southern distribution of permafrost in low relief terrain, permafrost takes the form of forested peat plateaus and is interspersed by permafrost-free wetlands (i.e. channel fens and flat bogs). Previous field studies have found that channel fens serve as the drainage network and route water to the basin …

Task-Dependent Modulation Of Cortical Excitability And Balance Control In Individuals With Post-Concussion Syndrome, Kristen Kaster, Jayne M. Kalmar Ms., Michael E. Cinelli Mr

Theses and Dissertations (Comprehensive)

In most cases, symptoms resolve between 7-10 days post-concussion. However, in 10-15% of the concussed population, symptoms can remain unresolved for months to years following the head injury. The purpose of this thesis was two-fold, and was broken up into two studies, where the same individuals participated in both studies. The purpose of the first study was to quantify the differences in balance control between individuals with PCS (i.e., had been experiencing symptoms for <30 days) and non-concussed individuals during a lower-limb reaching task. Participants completed a static balance assessment before and after a lower-limb reaching task, which incorporated a Go/No-Go paradigm. Results from this study revealed no differences in the static stability assessments, however, individuals with PCS demonstrated increased medial-lateral COP displacement as well as greater trunk pitch during the reaching task. Overall, the findings reveal persistent balance impairments in individuals with PCS, which may put this population at an increased risk of further injury. The purpose of the second study was to assess task-dependent modulation of cortical excitability prior to planned index finger abduction contractions comparing a non-concussed population to a population with PCS. The protocol in this study consisted of both single and paired-pulse transcranial magnetic stimulation (TMS) which was applied prior to the beginning of 3 different tasks (i.e., a rest condition with no plan to contract, a precision contraction, and a powerful contraction). In addition to the three tasks, participants also had to respond to a Go/No-Go cue. The results of this study revealed an increase in excitability prior to a precision contraction in both non-concussed and PCS groups. No differences in task-dependent modulation were found between the two groups with respect to intracortical facilitation and inhibition, however a negative correlation between number of symptoms reported (SCAT3 symptom evaluation) and intracortical facilitation was revealed. The increase in corticospinal excitability prior to a precision contraction was not explained by the two cortical mechanisms we assessed and may therefore be due to spinal modulation or a different cortical mechanism. Overall, based on the results from this thesis, it appears that individuals with PCS have balance impairments, which may be a result of an inability to maximally activate their postural muscles. Furthermore, it appears that those individuals who reported a higher number of symptoms had greater reductions in intracortical facilitation, likely reflecting the heterogeneity of this clinical group.

Loose Coupling And Defining Deviance Down: Correctional Officers’ Perceptions Of Organizational Responses To Mental Health And Well-Being., Victoria M. Baker

Theses and Dissertations (Comprehensive)

Correctional work is characterized by high rates of occupational stress, which can produce a plethora of negative outcomes for the officers employed within such institutions. The present study examines Canadian provincial correctional officers’ perceptions of how occupational stress is created within the context of their employment. Through in-depth interviews with 11 correctional officers, I examine the political, organizational, and cultural factors that are perceived to negatively affect employee stress and well-being. From this analysis, I present three principal arguments. First, I uncover how correctional officers perceive ministerial policies to be loosely coupled from frontline practices. I argue that this loose …

From Brain Drain To Brain Train – A Transnational Case Analysis Of Nigerian Migrant Health Care Workers, Sheri Adekola

Theses and Dissertations (Comprehensive)

This study involves a micro-analysis of the experience of Nigerian-trained health professionals in Canada and is designed to understand the experiences of these skilled migrants, the impact of their migration, and how further migration might be stimulated or reduced through engagement in transnational activities with workers still in Nigeria. The research questions asked, (a) Which discourses of skill exchange are most meaningful to Nigerian health care workers in Canada? (b) How is this process of value exchange and extraction structured by transnational connectivity? (c) How does this research contribute to current concepts regarding skilled migration?

Framed by the Integrative Model …