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2017 — Embodied Capital, Envy, and Relative DeprevationRésumé
Inequality causes feelings of relative deprivation and envy. Inequality has almost exclusively been examined as an environmental variable, characterized by skewed distribution of resources; however, inequality can also manifest through individual differences in traits such as intelligence, strength, and attractiveness. These innate qualities aid in successful social competition and are collectively referred to as embodied capital. Mishra, Barclay, and Sparks (2017) posit that both environmental and embodied factors influence an individual’s relative state – their assessment of their competitive (dis)advantage. This study examined whether low embodied capital is associated with feelings of relative deprivation and envy. Participants (n = 198) … Lire la suite
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2017 — The Mamdani Fuzzy Inference System Approach for Risk Evaluation of Diary Products ManufacturingRésumé
The world is evolving and growing every day and the need for dairy products are becoming more evident and essential to human. The higher consumption rate of dairy products by people of different ages has attracted investors because of its economic values. Considering this growth and its economic benefits, the understanding of the risk involved in dairy products manufacturing processes is highly required. The objective of this research is to develop an intelligent system capable of analyzing risk level of dairy products manufacturing system at different categories (Physical, Biological, Chemical, and Environmental) of the operation, and the final risk evaluation … Lire la suite
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2017 — Reforms to the United Nations' Security Council: A Case Study of NigeriaRésumé
Since 1993, the United Nations (UN) General Assembly has debated calls for reform to the United Nations Security Council (UNSC). Proposed reforms have included amendments to the use of the veto, improved representation of member countries in the permanent membership and an expansion of the Council's permanent members. The continent of Africa is not represented in the permanent membership of the UNSC, though it is the largest regional group in the UN. With three of the Council’s five permanent members from Europe and one each from the Americas and Asia, the African Union argues this situation is historically unjust and … Lire la suite
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2017 — Examining Change in Health Anxiety Symptoms Resulting From Transdiagnostic, Internet-Delivered Cognitive Behaviour Theapy: The Impact of Therapist SupportRésumé
Internet-delivered Cognitive Behaviour Therapy (ICBT) is a relatively new method to improve access to psychological services and is based on the principles of cognitive behaviour therapy (CBT), a well-established and efficacious treatment option for various mental health concerns. The presence of therapist support is regarded as an important element in ICBT, yet less is known about how much therapist contact is needed; namely, whether optional therapist contact is as effective as weekly communication with a therapist. ICBT programs have historically been disorder-specific in nature, wherein specific information relevant to one disorder is presented; disorder-specific ICBT is efficacious in the treatment … Lire la suite
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2017 — English-only instruction: A comparative case-study of a rural and an urban basic school in GhanaRésumé
This study takes a critical look at ‘English-only’ medium of instruction in Ghana. Like many African countries, Ghana has multiple languages. Davis and Agbenyega (2012) estimate that Ghana has approximately 49 spoken languages and dialects. Local languages are used for everyday life in local communities. English is learned in school and spoken mainly in official places. English was used by British administration as the language of government, law, education and the national newspaper (Sey 1973) and remains the sole official language of Ghana today. This study draws on a historical overview of Ghanaian language-in-education policy (from 1961 Education Act to … Lire la suite
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2017 — A Pilot Test of an Internet-Based Smoking Cessation Intervention: Outcomes Across Chronic Pain and Pain-Free SamplesRésumé
Background: Smoking and chronic pain are major public health concerns in Canada. Contemporary models of smoking and chronic pain suggest a reciprocal and self-perpetuating cycle, wherein smoking reduces pain in the short term but indirectly exacerbates pain in the long term. Population evidence indicates that a majority of Canadian smokers want to quit smoking; however, 90% of quit attempts are unsuccessful. Quitting may be even more difficult for those with chronic pain. Pain-related anxiety and expectancies that smoking will reduce pain have been suggested as additional cessation barriers faced by some individuals with chronic pain. Internet-based interventions have been suggested … Lire la suite
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2017 — Spin Polarizability of a Proton using Polarized Photon Beam and Polarized Butanol Target at Mainz MicrotronRésumé
Within this work, the data analysis and experimental results on the measurement of the double polarization observable (or beam-target asymmetry), Σ2z, for real Compton scattering off the proton is presented. The Σ2z values are measured via a circularly polarized photon beam incident upon a longitudinally polarized butanol target in the resonance region, Eγ = 250-310 MeV. This experiment was performed at the MAMI-A2 tagged photon facility in Mainz, Germany, during two experimental beamtimes in 2014 and 2015. This work also involves the extraction of proton spin polarizabilities, which are fundamental structure constants, similar to its charge and mass. These constants … Lire la suite
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2017 — What's At Hand: Improvisation, Group Facilitation, and 'Agreement' Among StrangersRésumé
In this support paper, improvisation artist Jayden Pfeifer reflects on the history, creative process, and theoretical framework at the foundation of what’s at hand: a facilitated improvisation performance that engages the gathered audience as both spectator and participant, and promotes the teacher as co--‐performer. This paper outlines Pfeifer’s background and training as a performance--‐based improviser, teacher and workshop facilitator, and prairie--‐based interdisciplinary artist. Pfeifer’s practice--‐based research utilizes a methodology made up of five skills of improvisation --‐ availability, listening, acceptance, support, expression --‐ and examines those skills as they become activated in relationship to other humans to create Agreement between … Lire la suite
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2017 — First Generation Learners in Higher Education: Tales of Shame and PrivilegeRésumé
I am a first generation learner (FGL) in higher education (HE). A FGL is a student who is the first person in their family to attend HE. Academia presents FGLs as students who are defective. FGLs are often defined in the literature as students that lack cultural capital and fail in academia due to their personal, cultural and social deficits. The underlying and insidious message in much of the research around FGLs is that they do not belong in academia. FGLs are depicted as the square peg and the academy as the round hole. In order for FGLs to ‘fit … Lire la suite
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2017 — Quantum Fidelity and the Bures Metric in Operator AlgebrasRésumé
This dissertation undertakes the study of quantum delity, a distinguishability measure in the context of quantum mechanics, from the operator algebraic viewpoint. The notion of delity provides a quantitative measure of how close one state of a quantum system is to another state. High delity occurs when the two states are very close to each other. Evidently, this concept is closely related to a metric on the quantum states which is known as the Bures metric. In this thesis, delity and the Bures metric have been studied in the context of (i) unital C -algebras that possess a faithful positive … Lire la suite
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2017 — Investigating the Nova Scotia Waste Management Model: Business and Financial AspectsRésumé
Canadians disposed 965 kg of solid waste per capita (kg/cap) in 2010, while in Nova Scotia, a Canadian province, the average disposal was only 390 kg/cap. Using aggregate data from national surveys, the first part of this study used regression analysis to analyze disposal and diversion trends, and their relationships with expenditure, GDP, business size, and diversion rates in Nova Scotia, Québec, Ontario, and nationally. Waste diversion increased by 35% in Nova Scotia, compared to a 1.5% increase nationally over the study period (1996-2010). In Nova Scotia, Ontario, and Canada there were somewhat strong relationships between GDP and residential diversion … Lire la suite
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2017 — Studies on quadratic matrix equations and riccati differential equations associated with regular m-matricesRésumé
The thesis is mainly about the quadratic matrix equation X2- EX- F = 0, where E is a diagonal matrix and F is a regular M-matrix. Quadratic matrix equations of this kind arise in noisy Wiener-Hopf problems for Markov chains. The solution of practical interest is a special M-matrix solution. The existence and uniqueness of M-matrix solutions and some numerical methods for nding the required M-matrix solution are studied by transforming the equation into a nonsymmetric algebraic Riccati equation for which the four coe cient matrices form a regular M-matrix. We also discuss the initial value problem for a matrix … Lire la suite
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2017 — A Practice Approach to Attachment and Autonomy In Site Based Educational DevelopmentRésumé
My dissertation engages the familiar trope that when the full development of the human personality is directed toward the autonomous individual, a form of neo-colonialism emerges that pathologizes students who come from families or cultures that do not practice the autonomous individual as full development of the person. I show 1) that obligatory education and autonomous individualism are strongly coupled, and related 2) that despite stated intentions otherwise, many of the practices of obligatory education tend to exacerbate rather than ameliorate for problems like compulsive consumerism and neo-colonialism. My overall concern is to show that there are ways for educators … Lire la suite
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2017 — Coyote Stories: Attending to Narratives as Life-MakingRésumé
Living, telling, reliving and retelling my own autobiographical stories of experience, along with the stories of experience of students from my early years as a teacher, I entered formal narrative inquiry with two co-participants, Isabel and Anne-Marie. My personal and social justifications for this research were rooted in my living and living out silenced stories inside and outside of educational landscapes. In the midst of the inquiry journey, my research puzzle shifted, changed, and emerged: How might I live alongside students, attending narratively to our stories of experience, particularly to silenced stories, and then how might our identity making stories, … Lire la suite
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2017 — Synthesis of Amphiphilic DithienylethenesRésumé
The work presented in this thesis describes the design and preparation of asymmetrical, amphiphilic dithienylethenes (DTEs). In general, enhancing the photochromic properties of DTEs is crucial to their application in biocompatible drug delivery systems. The syntheses of DTEs 1–4 were carried out following various devised synthetic routes. Within these synthetic routes, the efficiency of two coupling reactions was found to be important to the overall efficiency of these syntheses. The first reaction involved the regioselective substitution at the 2– and 5–position of thiophene derivatives with aryl- and alkylaryl-substituted boronic acids via Suzuki–Miyaura cross-coupling reactions. In most cases, these substitution reactions … Lire la suite
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2017 — Immobilization of Tetrabromobisphenol A On Pinecone-Derived BiocharRésumé
In the past decades, Tetrabromobisphenol A (TBBPA), one of brominated flame retardants (BFR), has been widely used in a variety of commercial and industry applications to improve fire resistance, and it is also commonly used in fire safety of laminates in printed circuit boards, plastics in electrical and electronic equipment. Due to its large part of world production of BFRs for covering around 60% of the total BFR market and the use of TBBPA is currently not restricted in many countries including America and China, TBBPA is of great concern as a relatively persistent organic pollutant released through manufacturing, recycling, … Lire la suite
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2017 — Engagement Paper for Hybrid Format Film MeatRésumé
After having suffered the pressure of being a single woman at the age of twenty-five when I was in China, I have made a hybrid format short film Meat to remember my personal experience as being a sheng nu (left-over woman). This engagement paper puts Meat into a theoretical, historical, and personal context. Through the personal-experience-based story, a sheng nu’s relationship with the society and her family will be explored, in an attempt to analyze the social, historical and political problems, faced by single Chinese women during this decade. The paper will also discuss how the creative choices behind the … Lire la suite
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2017 — Nonequilibrium phase Behaviour and Mass Transfer of Alkane Solvents(s)-CO2-Heavy Oil Systems Under Reservoir ConditionsRésumé
During primary heavy oil recovery, a unique phenomenon has been found to be closely associated with an unexpected high recovery factor, a remarkably low gas-oil ratio, and a higher-than-expected well production rate due mainly to the foamy nature of viscous oil containing gas bubbles. Even for secondary and tertiary recovery techniques, it is possible to artificially induce foamy oil flow in heavy oil reservoirs by dissolution with injected gases (e.g., CO2 and alkane solvents), which is characterized by time-dependent (i.e., nonequilibrium) phase behaviour. The entrained gas bubbles in the heavy oil are considered as the main mechanism accounting for such … Lire la suite
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2017 — Evolutionary Winner Determination in Advanced Combinatorial Reverse AuctionsRésumé
Traditional Combinatorial Reverse Auctions (CRAs) are already very hard problems to solve. By considering the multiplicity of units, attributes and objectives of items; the complexity of CRAs increases. Winner Determination (WD) is one of the main challenges of CRAs, and which has been shown to be NP-complete. Researchers limit the auction features because of the issue of time efficiency. We address several types of advanced CRAs by varying the auction parameters. We tackle the combinatorial procurement problem instances using Genetic Algorithms (GAs). In the first instance, we consider multiple units, single attribute and objective. To this end, we propose a … Lire la suite
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2017 — Common Nighthawk (Chordeiles minor) Habitat Associations and Activity Patterns in the Northern Boreal ForestRésumé
Understanding how organisms interact with their environment is key to developing effective management strategies. Due to population declines detected in the southern part of their range, Common Nighthawks (Chordeiles minor) are listed as Threatened in Canada. Despite the northern boreal forest representing a significant portion of their breeding distribution, populations in these areas remain virtually un-studied and thus their numbers and biology are poorly understood. My study is one of the first to examine both temporal and spatial aspects of habitat associations for breeding nighthawks in the northern boreal forest. In the boreal region, fires create open habitats in an … Lire la suite
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2017 — Teachers' Perceptions of Project of Heart, An Indian Residential School Education ProjectRésumé
The purpose of this study was to gain insight into how settler teachers took up an arts and activist-based Indian Residential School Commemoration Project called Project of Heart. More specifically, it sought to assess whether or not the research participants were led to transformation, demonstrated through disrupting “common sense” (racist) behaviours of teachers and students as well as through their engagement in social justice work that Project of Heart espouses. Since 2007 Ontario school boards have been required by Ministry policy to to teach the “Aboriginal perspective” in their high school courses, yet at the time of the study (2010) … Lire la suite
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2017 — Heat Duty Evaluation for Solid Acid Catalyst-Aided CO2 Desorption in Amine-Based Post combustion CO2 Capture and Option for Integration of Process with a Coal-Based Electricity Generating Power PlantsRésumé
This research introduces a novel idea for CO2 absorption technology used in post combustion capture in coal based electricity generations. It has as its objective the reduction of the energy requirement for the regeneration of amine solvents with the aid of solid acid catalysts. The work included two major components: laboratory experiments and process simulations of the integration of the CO2 capture process with a coal fired power plant. The experiments were performed in a bench scale CO2 capture apparatus. The absorber and desorber were stainless steel pipes with inside diameter of 0.05 m and height of 1.50 m. The … Lire la suite
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2017 — Design of an Over-Coupled Coaxial Resonator for Determing the Electrical Properties of MaterialsRésumé
knowledge so that different materials can be adapted for varying purposes. For example, materials used in engineering design and processes. With unique properties of every material, there is need to determine the properties and characterise materials based on their properties, where their electrical properties is dependent on the dielectric properties of the materials. In this thesis, a method used in determining the electrical properties of materials using the group delay information is investigated. A gap-coupled coaxial resonator that operates in an over-coupled state is designed and used in obtaining the dielectric properties of sample materials. Electromagnetic and circuit simulation tools … Lire la suite
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2017 — Police Decision-Making: The Impact of Choice on Use-of-Force DecisionsRésumé
Research on choice and decision-making has indicated that excessive choice can negatively influence decision-making performance. Choice overload research has mostly focused on consumer purchases, thereby limiting the generalizability to applied professional settings. This research examined 112 Canadian police cadets on decision-making in a use-of-force situation. Cadets interacted with a high threat virtual judgment scenario wherein they had to choose the most appropriate intervention option available to immobilize the subject and stop the threat. Cadets participated in one of two limited choice groups or one extensive choice group and were evaluated on performance, response time (RT), self-reported confidence, and physiological arousal. … Lire la suite
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2017 — Noticing How To Improve as a Critical Mathematics EducatorRésumé
This self-study attempts to better understand and improve my practice as a critical mathematics educator. The research study emerged from tensions between my current practices as a mathematics teacher and my beliefs about teaching and learning mathematics. I conduct this research through a self-study by integrating the discipline of noticing (Mason, 2011) through the Integrated Noticing Framework (Nolan, 2017), exploring two research questions: (1) As a high school mathematics teacher, what do I notice as I use inquiry to enact a curriculum infused with ideas from critical mathematics educational research? (2) How can I more effectively teach using inquiry methods … Lire la suite
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2017 — Seasonal Impacts and Regulation of Nitrogen Pollution in the Northern Great Plains Insights from Microcosm, Mesocosm, and Mensurative Scale StudiesRésumé
The value of controlling nitrogen (N) and its impact on water quality are frequently contested, partly due to inconsistencies in the effects of N pollution depending on the form, amount, and seasonal conditions in which it is released to freshwater ecosystems. This thesis aims to shed light on some of those differential effects, and advance our understanding of the seasonal variation in the impacts and drivers of N pollution to prairie lentic and lotic environments. In my first chapter, I evaluate the seasonal and differential effects (i.e., suppression vs stimulation) of NH4 + on phytoplankton abundance, using 16 years of … Lire la suite
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2017 — Using Data to Inform Appropriateness in Saskatchewan's Health Care System: A Snapshot of Low Acuity Emergency Department UseRésumé
Background Emergency department (ED) use for low acuity medical conditions is widely regarded as a contributor to health system inefficiency. Low acuity conditions are semi-urgent or non-urgent conditions that can safely withstand 60 to 120 minutes prior to physician initial assessment. Low acuity ED attendance diverts limited resources away from patients with urgent conditions and creates increased demand for ED services. Low acuity conditions can also accrue higher costs at EDs than alternative primary care centres due to greater resource consumption and higher specialist fees. Continuity of care is compromised when patients consult EDs for low acuity conditions that have … Lire la suite
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2017 — Study of Ionic Liquids as Effective Solvents for Enhanced Heavy Oil RecoveryRésumé
Injecting chemicals in reservoirs is an efficient technique to improve oil recovery. In this study, several types of Ionic Liquids (ILs) were initially screened using the Conductorlike Screening Model for Realistic Solvents (COSMO-RS) model. COSMO-RS, in particular, is capable of providing predictions of the thermodynamics properties of ILs. A comprehensive screening study of 148 probable cations and 46 anions was performed in order to shed some light on the interaction of ILs with hydrocarbons via the calculation of the capacity of the screened ILs to hydrocarbons fractions and water. The most suitable ILs for our purposes were chosen, and employed … Lire la suite
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2017 — Lithofacies properties, biostratigraphy, cyclicity and depositional environment of the Margala Hill Limestone, Hazara Basin, Northern PakistanRésumé
The Margala Hill Limestone is a carbonate-dominated unit that occurs in the Kalla-Chitta, Hazara and Potwar basins in north Pakistan. This study addresses the lithofacies attributes, depositional setting, cyclicity, biostratigraphy and, sequence stratigraphy of the Margala Hill Limestone in the Hazara Basin. In the study area, the formation has an average thickness of 80 m; it conformably overlies the Paleocene-Eocene Patala Formation and is conformably overlain by the Early Eocene Chorgali Formation. The Margala Hill Limestone consists of bioclastic limestone lithofacies with subordinate gray to brownish gray, thin marl interbeds. The limestones are commonly grey, weathering pale grey, fine-to medium-grained, … Lire la suite
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2017 — Randomized Control Trial of the Efficacy of Parent-Directed Presurgery Shaping and Exposure to Anesthetic Mask for Prevention of Preoperative Anxiety in ChildrenRésumé
The detrimental effects of children’s anxiety during anesthesia induction are welldocumented. Though pharmacological approaches (e.g., sedative) are efficacious, they have potential negative consequences. As such, non-pharmacological approaches (e.g., parental presence, anesthetic mask exposure) may be preferable. Recent research has demonstrated the utility of a parent-directed intervention involving exposure to the anesthetic mask in increasing child compliance and decreasing anxiety at anesthetic induction. In the mentioned study, anesthetic mask exposure occurred on the day of surgery, and employing the mask exposure intervention earlier may be beneficial. The current randomized control trial examined the efficacy of parent/guardian-directed anesthetic mask exposure and shaping … Lire la suite
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2017 — Relativity: Synchresis in Art and Applied ScienceRésumé
This critical engagement paper outlines the technical details and theoretical support for my Masters of Fine Arts final project titled Relativity. This project explores philosophies of perception through associations between art and science within an interdisciplinary study of sound art and expanded cinema. These theories are developed through an interpretation of quantized, binary systems in their relationship to natural, continuous forms. The study of relativity is seen a method to reconcile binary positions in thinking, to cross boundaries between art and science, and to serve as a metaphor for hidden knowledges and a movement from polarities to spectrum states of … Lire la suite
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2017 — Discourse and the Construction of the Science-Teacher-Subject: An Examination of why we say the Science Teacher is EliteRésumé
Science education has found itself in a paradoxical state of stagnant flux. Despite numerous calls for reform and a near consensus amongst science educators on the teaching techniques that hold the most promise, new pedagogical approaches have hardly been implemented. Scholarship advocating for pedagogical change tends to focus on examining teachers’ beliefs, instructional methods and student engagement. These approaches are limited as they often fail to account for the political, social and historical groundings of these practices. This study explores the relations of power, discipline and domination implicated in the construction of the science-teacher-subject. It employs a poststructural conceptualization of … Lire la suite
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2017 — A Two-Dimensional Heterogeneous Numerical Model for Auto-Thermal Reforming of Synthetic Crude Glycerol in a Packed Bed Tubular ReactorRésumé
Hydrogen (H2) production has garnered attention amongst renewable energy researchers and intergovernmental agencies because of its potential to be an energy carrier and ability to satisfy the energy requirements of society. To date, the primary resource for H2 production is methane (CH4) found in natural gas, and to reduce fossil fuel utilization, other hydrocarbon sources have been identified. Glycerol is the by-product of biodiesel production, and with excess crude glycerol on the market, it proves advantageous to apply reforming methods to this feedstock to produce hydrogen. This work presents numerical models for a catalytic auto-thermal reforming (ATR) process developed for … Lire la suite
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2017 — What You Carry and Surrender No. 40Résumé
This critical engagement paper is intended to accompany the play What You Carry and the solo performance text Surrender No. 40. Part one, the introduction, argues that both texts are intended to contribute to the process of reconciliation between descendants of settlers and Indigenous peoples in Canada, by telling the truth about this country’s colonialist history and by making gestures towards reconciliation. Part two outlines the six methodologies employed while writing these two texts: writing and narrative inquiry, autobiography and/or autoethnography, new play development, historical research, walking-as-performance, and solo or autobiographical performance. Part three discusses two theoretical contexts of the … Lire la suite
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2017 — Running Solo: Indigenous Teacher Identity in Roman Catholic EducationRésumé
Through the lens of Critical Race Theory (CRT), Tribal Critical Race Theory (TribalCrit), and whiteness studies the inquiry set out to trouble the question; how does Indigenous teacher identity exist in Roman Catholic education? Following a hybrid methodology that allied critical ethnography and Indigenous methodology, three salient themes emerged: (1) Indigenous teacher identity, (2) systemic barriers and (3) notions of change. Endemic structures of dominance and pressures to colonize influenced the construction of Indigenous teacher identity in Roman Catholic education. Conversations concerning pedagogical philosophy, advocacy and the effects of cultural brokering focused the theme. Systemic barriers were abundant for Indigenous … Lire la suite
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2017 — Evaluation of a chemical dissolved air flotation system for the treatment of restaurant dishwasher effluentsRésumé
Large quantities of fresh water are consumed by restaurant dishwashers every day, producing significant amounts of high strength oily wastewater in the process. An internationally patented chemical dissolved air flotation (DAF) system (Young and Munoz, 2012) was evaluated in this research to determine if it was capable of reclaiming restaurant dishwasher effluents (RDEs) in a cost-effective and reliable manner. Different chemicals and process conditions used in chemical DAF were evaluated. Dimethylame P/W epichorohydrin (Polymer 572), a cationic polymer, was determined to be the optimal demulsifier among eight demulsifiers tested. Influent and effluent water quality was evaluated in terms of oil … Lire la suite
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2017 — Semi-Analytical Modeling of Fluid Flow and Solid Deformation in Heterogeneous Reservoirs using Universal Boundary Integral ApproachesRésumé
In the Canadian oil and gas industry, heavy oil and unconventional reservoirs play a vital role in sustaining the production of crude oil and face tremendous technical challenges of enhancing recovery while reducing environmental footprints. Among various development technologies, the cold heavy oil production with sand (CHOPS) and hydraulic fracturing techniques have been widely applied in Western Canadian basins to unlock the unconsolidated heavy oil and tight formation reservoirs, respectively. Both technologies are proved to be efficient during the primary production period; however, they suffer sharp production decline and low recovery factor. Moreover, during the enhanced oil recovery (EOR) phase, … Lire la suite
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2017 — Simulation of free-surface flows and development of an improved particle methodRésumé
Undergoing development for decades, the mesh-free methods, both Smoothed Particle Hydrodynamics (SPH) and the Moving Particle Semi-implicit method (MPS), have become useful numerical tools for studying free-surface flows in various engineering problems. They are able to easily simulate complicated fluid interface flows. As a Lagrangian method, MPS with a weakly-compressible technique, Weakly-Compressible Moving Particle Semi-implicit method (WC-MPS), has been widely applied into handling free-surface flows in hydraulic engineering. WC-MPS has been reported to perform well in reproducing the flow structures and velocity distributions in many free-surface flows. One aspect of this study is to apply WC-MPS to simulate fishway flows … Lire la suite
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2017 — Experimental and Theoretical Studies on Foam Flooding in Tight ReservoirsRésumé
Enhanced oil recovery for tight reservoirs with extremely low permeability and porosity is becoming the new routine for reservoir engineering research. Foam flooding has already been proven as an effective and potential approach to enhance the oil recovery in conventional reservoirs. However, limited research has been done on the phenomena and mechanism of foam performance in tight porous media. In this study, both experimental and theoretical approaches are utilized to study the foam flooding process in tight reservoirs. In the experimental part of this study, a series of core flooding tests are performed to investigate foam performance in the absence … Lire la suite
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2017 — Analytical Modeling of Multi-Fractured Horizontal Wells in Heterogeneous Unconventional ReservoirsRésumé
Current analytical models for multi-fractured horizontal wells (MFHW) generally neglect reservoir heterogeneity, typical seepage characters of unconventional reservoir, partially penetrating fracture and various fracture damage mechanisms. In this thesis, three linear flow models have been developed to facilitate pressure and rate behavior analysis of shale, tight sand and unconventional reservoir with damaged fractures. These models are validated by comparing with KAPPA Ecrin and are more accurate than previous linear flow models in modeling partially penetrating cases. Field data are analyzed and results prove the reliability of these models. The first model is for heterogeneous shale reservoir with multiple gas transport … Lire la suite
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2017 — Experimental Research on Multiphase Liquid Mobilization and Motion in Capillary and Micro Models Subjected to External Low Frequency Vibratory ExcitationsRésumé
The research of this dissertation experimentally investigates the impacts of external vibratory excitation on the mobilization and motion of multiphase liquid in capillary and microcell models, aiming for understanding the mechanism of oil-water mobilization and flow in pore structures subjected to external excitations. Experiments with capillary models are first conducted; in which both straight capillary and curved capillary models are employed as an analogue of the pore structures. The mobilization and motion of an oil slug trapped in the capillary models with capillary forces are studied in the research. The models considered are subjected to both external pressures created by … Lire la suite
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2017 — Comprehensive Experimental Study on Foam Flooding for Enhancing Heavy Oil RecoveryRésumé
At present, thermal method, such as steam injection and in-situ combustion are the best for recovering heavy oil. However, some reservoirs in Canada and the United States with ultra thin oil formations saturated with lower viscous heavy oil (50~200 cp), chemical flooding is more attractive compared with conventional thermal methods. This study is aimed to explore the effectiveness and potential application of foam flooding for enhancing moderately viscous oil recovery. The effects of surfactant type and concentration on surfactant properties were examined in terms of bulk foam ability and foam stability by the Ross-miles method and Warning blender method. Foam … Lire la suite
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2017 — The Impact of Intimate Partner Stalking on Women Targets: A Narrative Inquiry Analysis.Résumé
Over the past decade, research on intimate partner stalking has been expanding. The vast majority of these studies have utilized quantitative methods to investigate the impacts of partner stalking on victims. The few qualitative studies that have been conducted were based on an American sample and did not examine women’s experiences with the criminal justice system or various other service providers (e.g., Melton, 2007b). Logan and Walker (2009) call for future research to utilize narrative inquiry methodology in order to expand on previous findings. As such, the purpose of the current study was to collect stories and experiences from women … Lire la suite