Digital Commons Network^™

The Influence Of Water Quality On Wetland-Associated Microbial Communities, Lindsey Clairmont

Theses and Dissertations (Comprehensive)

Within a wetland environment, bacteria in association with plant roots play a vital role in maintaining the health of freshwater ecosystems. In order to gain insight into the stability and processes occurring within natural and constructed wetland environments we need to develop a better understanding of the relationship between wetland plants, root-associated microbial communities and environmental factors. Human population growth and urbanization have resulted in greater contaminant loads (inorganic nutrients, fecal contamination etc.) entering our waterways. As such, we need a better understanding of how anthropogenic impacts influence the structure and function of the wetland-associated microbial communities that we rely …

Sprint Interval Training: Assessing Effectiveness And Adherence In A Real-World Setting, Gregory Howe

Theses and Dissertations (Comprehensive)

Introduction: Perceived lack of time is an oft-cited reason for not engaging in physical activity. One proposed solution is high-intensity interval training (HIIT), or a more intense version known as sprint interval training (SIT), which involves repeated “all-out” efforts interspersed with short recovery periods. Although convincing evidence demonstrates the efficacy of SIT on cardiorespiratory fitness and other health factors, whether individuals will independently perform and benefit from this type of exercise outside the supervised lab setting is unknown. Purpose: To compare the effectiveness and adherence of performing running SIT and moderate-intensity continuous training (MICT) protocols in a real-world setting. Methods: …

The Fatigue-Associated Changes In Estimates Of Persistent Inward Current In Human Motor Neurons, Chris Compton

Theses and Dissertations (Comprehensive)

Neuromuscular fatigue is associated with reduced supraspinal drive. Similarly, intracortical facilitation and muscle activation are reduced following concussion. Both fatigue and mild traumatic brain injury are associated with increased noradrenergic and serotonergic activity in animal models. Given that monoaminergic-dependent persistent inward currents (PIC) set spinal motor neuron (MN) gain, we speculate that PIC will increase during fatigue to compensate for supraspinal hypoexcitability and that this will be more pronounced in people with concussion. Therefore, the purpose of this experiment was to assess spinal MN excitability during fatigue in people with concussion and healthy controls. 20 participants (10 concussion, average age …

Gill Structure & Function In Parasitic And Non-Parasitic Lampreys: The Effects Of Metamorphosis And Freshwater-Seawater Transfer, Julia Sunga

Theses and Dissertations (Comprehensive)

Lamprey (Petromyzontiformes) are a phylogenetically ancient group of jawless fishes that begin their lives as filter-feeding larvae (ammocoetes) before undergoing a complex metamorphosis into juvenile lamprey that involves major changes to their internal and external body plan. Some parasitic species, such as the sea lamprey (Petromyzon marinus), migrate to sea following metamorphosis, where they use their oral discs and rasping tongue to attach to and ingest vast quantities of blood from fishes. Thus, sea lamprey have to counter the simultaneous challenges of hyposmoregulation in sea water and the generation of large quantities of ammonia due to the …

Good Works And The Great Commission: An Exploration Of Religious Influence In Evangelical Faith-Based Organisations In Canada And India, Ravi Gokani

Theses and Dissertations (Comprehensive)

By the mid-1990s, the post-war, Keynesian welfare state that had typified much the landscape of service provision in North America had already begun seriously to corrode in the presence of a resurgent classical liberalism. This meant, among other things, an increased role for civil society organisations in the provision of social welfare to citizens in need. As part of this restructuring of the welfare state, faith-based organisations found a renewed place, bolstered in part by favourable legislation, political support, and the revival of a once-recluse evangelicalism. Today, with decades of maturity and the aide of technology, evangelical faith-based organisations are …

Indigenous-Black Identity: Two Manuscripts Concerning Indigenous-Black Identity, Identity Formation, Mental Health, And Trauma, Ann Marie Beals

Theses and Dissertations (Comprehensive)

This thesis was written in the form of two different, yet similar stand-alone manuscripts. The overall premise of my thesis was the exploration of Indigenous-Black identity – Indigenous to both Turtle Island and the continent of Africa. This introduction to the thesis is to give an overview of my work and the manuscripts, and to provide information that is relevant to the understanding of the thesis that may not necessarily be required for manuscripts that are to be submitted for publication. Manuscript one, titled Indigenous-Black Identity, Mental Health, and Trauma explored, as the title suggests, concepts of Indigenous-Black identity regarding …

Moral Identity Development Across Middle Childhood And Adolescence, Sonia Sengsavang

Theses and Dissertations (Comprehensive)

In moral psychology, moral identity has been viewed as a central explanatory construct in moral development linking morality and action. However, less is known about its development across the lifespan. The present dissertation aimed to address the limitations of previous research by using the personological approach to better understand how the multifaceted construct of moral identity develops from the understudied period of middle childhood to adolescence. The dissertation is separated into three chapters that can be considered as three research topics framed within one study tapping into the different layers of moral identity (see Krettenauer & Hertz, 2015). All chapters …

Learning To Read In English: Vocabulary Knowledge, Phonological Awareness In Relation To Oral Reading Fluency In Chinese-English Bilinguals, Michelle (Ruyun) Huo

Theses and Dissertations (Comprehensive)

Second language (L2) acquisition has received increasing interest due to the large number of people immigrating or learning an L2 (e.g., Statistics Canada, 2016). Word reading fluency has been found to be a strong predictor of text reading fluency and comprehension (Fuchs, Fuchs, Hosp & Jenkins, 2001). For people learning to read in L2, skills such as oral reading fluency serve as an indicator of overall reading competence in their L2. The current study examined oral reading fluency in relation to vocabulary knowledge, rapid naming (RAN) and phonological awareness in English and Mandarin in Chinese-English bilinguals. Participants included 40 Chinese-English …

Bas Bleus, Divorceuses, Deceitful Prostitutes Or “Live Allegories” Of Change? Parisian Working-Class Women And The Revolution Of 1848, Natasha A. Gardonyi

Theses and Dissertations (Comprehensive)

This thesis acts as both a history of the roles that Parisian working-class women played as writers, society members and insurgents during the revolutionary year of 1848, and an analysis of why they were vilified in the press as bas-bleus, divorceuses, deceitful prostitutes and more extensively as the individuals responsible for the failure of the revolution. It argues that women became “live allegories” of the changes that Paris was experiencing in the first half of the nineteenth century, particularly when a small minority of women radicalized from late April to June. These women galvanized anxieties that men and the upper …

Do Early Community-Based Initiatives Predict Social Anxiety 20 Years Later?, Christina Dimakos

Theses and Dissertations (Comprehensive)

Social anxiety disorder is characterized by an extreme and persistent fear of embarrassment or scrutiny in social or performance situations. This condition is among the most common mental illnesses and is characterized by an early onset, chronic course, and significant associated health and social service costs. Nevertheless, it remains among the least recognized, researched, and treated mental health conditions. Critically, broader community characteristics have yet to be considered as valuable tools for disrupting the onset and maintenance of social anxiety. The present study examined the long-term impact of a comprehensive, holistic, community-based early childhood development initiative on social anxiety in …

The Complexity Of Canadian Anti-Communism, 1945-1967, Ian Muller

Theses and Dissertations (Comprehensive)

This dissertation argues that the history of anti-communism in English Canada between 1945 and 1967 is more diverse and complicated than traditionally acknowledged. Often dispersed throughout the scholarship as elements of other Cold War topics, including espionage, state surveillance, and policing, anti-communism is the central subject of this investigation. A series of case studies are used to analyze individual encounters with the state and civic engagement with the domestic threat of communism. The unique politico-cultural approach of this dissertation will bolster Canada’s Cold War historiography by investigating both public and private manifestations of anti-communism.

The intersections of public safety, the …

An Assessment Of The Plant And Mycorrhizal Community At Steeves Lake Shoreline, Colomac Mine, Nwt, Rebekah Hamp, Dr. Kevin Stevens

Theses and Dissertations (Comprehensive)

This study focused on the environmental impacts of mining and potential techniques to mitigate them. The goals of this study were to (1) Quantify vegetation and fungal colonization at a remediated mine site in northern Canada, and to determine if there were effects from petroleum hydrocarbon contamination, (2) Determine the response of northern plants inoculated with mycorrhizal fungi to diesel contamination. Mycorrhizal colonization was observed in field collected roots and trends in colonization and vegetation cover suggested that these communities were no longer impacted by residual contamination. Mean hyphal colonization of Elymus trachycaulus roots collected over two years was 47.3±3.8% …

“Inconvenient Neighbours, Whom It Was Desirable Ultimately Wholly To Remove”: Differing Factors In The Dispossessions Of Studied Anishinaabe Groups Of The Great Lakes Basin, 1820-1865, Heather J. Sanguins

Theses and Dissertations (Comprehensive)

Despite being located within a relatively close geographic area, the Anishinaabeg of the eastern Great Lakes basin had different experiences of, and responses to, attempted and actual dispossession between 1820 and 1865. This research explores these experiences and the exercise of colonial power through the dispossession of six groups: the Lake Erie Anishinaabeg, the Walpole Anishinaabeg, the “American” Anishinaabeg who migrated into Upper Canada and Canada West, the Chippewa of Lakes Huron, Couchiching, and Simcoe, the Potaganasee Ojibwa of Drummond Island, and the Manitoulin Anishinaabeg. While eight themes weave their way through the cases, every case of attempted or actual …

Defence In Depth: An Anatomy Of Containment From Quarantine To Resilience, Jessica West

Theses and Dissertations (Comprehensive)

This dissertation investigates the logic of resilience as a prevailing mode of national security. Struck more by its familiarity than its novelty, I turn my attention to public health as a way of better understanding what resilience does and how it works. Using interpretive methods to read resilience theoretically as a function of complex systems and concretely as a set of homeland security policy practices in the United States, I situate the emergence and implementation of resilience as a redeployment of long-standing motifs and modes of “containment,” recast as an immune system. Specifically, I claim: 1) containment is a spatial …

Dynamic Balance Control And Segmental Orientation While Listening During Walking: Effects Of Age And Hearing Loss, Sin Tung Lau

Theses and Dissertations (Comprehensive)

Dynamic control of balance changes with age and changes with declines in sensory and cognitive abilities. For instance, emerging, yet robust associations between hearing loss and poor mobility have been described and yet the mechanism underlying these associations remains unknown. It could be that age-related declines in hearing ability result in different kinematic strategies when having to walk and listen at the same time (e.g. head and body orienting responses toward sounds) and/or that declines in hearing result in increased cognitive load during listening, at the detriment to mobility-related performance. Therefore, this thesis sought to better characterize these associations by …

A Qualitative Analysis Of Online Self-Harm Support Forums: Examining Users’ Online Activities During Self-Harm Desistance Processes, Claudia Volpe

Theses and Dissertations (Comprehensive)

Non- suicidal self-injury, commonly referred to as NSSI, is defined as the damage of one’s body tissue through the practices of, but not limited to, cutting, burning, branding, bone-breaking, biting, hair pulling and head banging (Adler & Adler, 2011), without suicidal intent (Lewis & Mehrabkhani, 2016). Self-harm literature has primarily focused on persistence processes and NSSI-related online interaction in the maintenance of pro self-harm ideology and practice. Alternatively, this research will provide insight into desistance processes of non-suicidal self-injury (NSSI) and related online interactions by conducting a virtual ethnography (Hine, 2000) of open, online spaces, consistent with the symbolic interactionist …

Police Use Of Twitter: 21st Century Community Policing, Nicole Coomber

Theses and Dissertations (Comprehensive)

With the advancement of social media platforms like Twitter increasingly being woven into the everyday activities of society members, police services, in an attempt to stay relevant and reflective, have begun adopting Twitter into their work initiatives. The present study examines the perceptions Canadian police officers regarding their use of Twitter as a community policing tool. Through semi-structured interviews with police officers and administrative staff operating official police Twitter accounts, and constructivist grounded theorizing, this research provides an in-depth examination of the perceptions of police officers who use Twitter as a part of community policing initiatives. Specifically, the study explores …

The Forgotten Front: British Home Defence And The Invasion Scare Of 1914, Alexander Maavara

Theses and Dissertations (Comprehensive)

Few issues have impacted the British people more than the historic fear or threat of invasion. From the Napoleonic Wars to the Second World War, the most “heroic” periods of British history have been those when the island faced possible invasion and destruction. This thesis seeks to address a gap in the history of Great Britain by examining the impact of Britons’ fear of invasion on British civil-military relations prior to and in the initial stages of the First World War. Following the 1911 Agadir Crisis, Britain’s defence establishment acknowledged the political and social influence that the fear of invasion …

Near-Surface Permafrost Ground Ice Characteristics And Ecological And Physical Drivers Of Transient Layer Ice Content In Discontinuous Permafrost, Jason Paul

Theses and Dissertations (Comprehensive)

Accelerated climate warming in northern regions is causing permafrost degradation, leading to the reduction of the areal extent of permafrost. Permafrost is the foundation for many northern ecosystems and communities, so its thaw can have important ecological and societal consequences. Thaw of ice-rich permafrost can cause subsidence of the ground surface proportional to excess ice content. Terrain settlement can cause ponding or damage to infrastructure. Following a surface disturbance that removes much of the vegetation cover, a shift in the ground thermal regime can cause an increase in active layer thickness and rapid thaw of the top portion of permafrost. …

The Great And Widening Divide: Political False Polarization And Its Consequences, Victoria Parker

Theses and Dissertations (Comprehensive)

American politics is becoming increasingly ideologically divided, and this cross-party hostility is reflected in pronounced partisan media outrage. However, while actual ideological polarization has indeed been rising, people estimate an ideological gap as being even larger than reality. We focus on whether part of this cross-party dislike can be explained by illusory perceptions of opposing party attitudes, attitudes the majority of the party members do not actually endorse. This illusory gap is referred to as false polarization; it is an interpersonal bias where a perceiver believes an opponent’s position is much farther away conceptually from where that opponent actually reports …

Exploring Lactate’S Role In Appetite Regulation Following High-Intensity Exercise, Luke W. Vanderheyden

Theses and Dissertations (Comprehensive)

Background: Intense-exercise has demonstrated an appetite suppressing effect post-exercise, however the involved mechanisms are not well understood. Lactate appears to be one viable mechanism as it has been found to bind to receptors on acylated ghrelin to inhibit release in cell culture. As sodium bicarbonate (NaHCO₃) can alter lactate accumulation post-exercise without manipulating exercise-intensity, it presents an intriguing means to investigate lactate’s potential role. Purpose: To examine the role of lactate on appetite using NaHCO₃ to alter blood lactate concentrations during high-intensity exercise. Methods: Eight recreationally active males completed two identical exercise sessions of low-volume high-intensity interval …

Attending To The Needs Of Inuit Inmates In Canada: Exploring The Perceptions Of Correctional Officers And Nunavut Officials, Kosta H. Barka

Theses and Dissertations (Comprehensive)

On March 10, 2015, the Office of the Auditor General of Canada released a performance audit concluding that the Nunavut Department of Justice did not adequately plan for and operate facilities to house inmates and did not adequately manage inmates in compliance with key rehabilitation and reintegration requirements. Given the room for improvement and my prior experience working with Nunavut Corrections, I embarked on a qualitative research project that sought to interview inmates in Nunavut Corrections about their perceptions of rehabilitation programs offered in Makigiarvik Healing Facility. Although university ethics approval was received for the research, I encountered resistance when …

Ecological Ethics And Social Work Therapy Practice, Karma Guindon

Theses and Dissertations (Comprehensive)

This study sheds light on the meaning of ecological ethics from the perspectives of ecologically-informed therapy professionals. A qualitative methodology was used to explore the perspectives of therapists from Canada, England, and the United States. Thirteen professionals were interviewed and feedback on these interviews was obtained utilizing focus groups. The findings include themes of relational assumptions, ecological values and principles, practice ecologies, and challenges and solutions to embracing ecological ethics. The findings suggest ways social work therapists can integrate ecological ethics into their everyday practice and point to changes that can be made in the profession more broadly, including changes …

Boundaries Of Fostering Happiness: Implicit Theories Of Happiness Predict Reactions To Positive Psychological Interventions, Esther Abel

Theses and Dissertations (Comprehensive)

Positive Psychology Interventions (PPIs) are activities designed to facilitate greater psychological well-being through building cognitive and behavioural habits and skills (Seligman, Steen, Park, & Peterson, 2005). However, there may be individual differences that play a role in the effect PPIs have. The present research evaluated how individuals’ implicit theories regarding happiness as being controllable or not controllable (Howell, Passmore, & Holder, 2016) may predict their responses to and participation in PPIs, and in turn if those beliefs may be linked to the positive outcomes of the activities. In four online studies, the relationship between implicit theories of happiness and PPIs …

Girls’ Voices Of The Eighteenth Century: The Development Of A Genre For Young Female Readers, 1740-1800, Sarah Rangaratnam

Theses and Dissertations (Comprehensive)

Just as they do today, adolescent girls functioned as a cultural force in the eighteenth century, and it was commercially viable for authors and publishers to attract and sustain the attention of these teenaged readers. Girls’ Voices of the Eighteenth Century: The Development of a Genre for Young Female Readers, 1740-1800, examines how four female authors leveraged elements of fairy tales, romances and gothic fiction, and developed dialogue and humour in their texts, to reflect the interests and literary awareness of their target audience of adolescent girls. My study begins with an investigation of the legacy of early French fairy …

Criminal Heroes In Television: Exploring Moral Ambiguity In Law And Justice, Amy Henry

Theses and Dissertations (Comprehensive)

Criminal justice is a popular theme in both news and entertainment media. How crime and justice issues are framed can actually legitimize corruption in a society. As research reveals the public’s dissatisfaction with the current failing retributive justice system, popular television series’ are confronting its flaws (Jerre, 2013). Utilizing a cultural criminological and social constructionist orientation, the following research examines anti-hero narratives in two highly rated crime-drama series, Breaking Bad and Sons of Anarchy. The main research questions examine: How the criminal protagonist or anti-hero is constructed in television crime procedurals? What claims about crime, criminality, law and justice …

Venus In The Trenches: The Treatment Of Venereal Disease In The Canadian Expeditionary Force, 1914-1919, Lyndsay Rosenthal

Theses and Dissertations (Comprehensive)

This dissertation examines the treatment of venereal disease (VD) in the Canadian Expeditionary Force (CEF). The Canadians had one of the highest rates of infection during the war with 15.8 per cent of servicemen being diagnosed with VD. These figures generated concern among Canadian officials about the negative impact this could have on both public health and opinion. Overseas officials needed to develop policies and procedures to control the spread of the disease. When strict disciplinary measures did little to address the issue, the military experimented with more lenient ones rooted in science and medicine. Even with these measures in …

Predicting Credit Ratings With Statistical Learning Methods, Yinduo Ma

Theses and Dissertations (Comprehensive)

After the financial crisis in 2008, for many companies, their credit ratings were downgraded to the non-investment grade. People started concerning the reliability of credit ratings. Credit score rating plays a vital role in the financial system by balancing information between investors and creditors. It is considered as an essential factor to make financial investment decisions. This thesis is an attempt to determine how to predict the credit rating using the publicly available financial information about companies. The data collected are viewed as high-dimensional multivariate financial time series data, which have more than one time series and more than one …

A Qualitative Study Of Families’ Experiences With Food Insecurity In Addis Ababa, Ethiopia, Elias Omer

Theses and Dissertations (Comprehensive)

Ethiopia has shown considerable progress in alleviating the decades-long food insecurity problem, but still, in the context of urban areas such as Addis Ababa families continue to struggle to make ends meet. The overall purpose of this research is to explore families’ lived experiences and coping mechanisms with food insecurity. Framed with the narrative-empowerment theoretical framework this ethnographic study outlines the findings of semi-structured interviews and focus group discussion of 35 adults and children and observational notes. Participants were able to tell their perception, causes, and impacts of food insecurity in their families. They outlined the daily strategies they employ …

Arriving Somewhere, Not Here: Exploring And Mapping The Relationship Between Border Enforcement And Migration By Boat In The Central Mediterranean Sea, 2006 To 2015, Kira Williams

Theses and Dissertations (Comprehensive)

The European Union (EU) implemented a maritime interdiction network using search and rescue which interdicted at least 462,813 “illegal migrants” in the Central Mediterranean Sea between 2006 and 2015. This involved 15 discrete, militarised and semi-secret maritime interdiction operations (MIOs) at a minimum cost of 126.9 million 2014 Euros. In this dissertation, I will explore and map these operations and their geographies between 2006 and 2015.

First, and based on the given existence of the European Patrols Network, I examine how this network came into being in the first place. This serves to show that the EU purposely created regular …