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2019 — Foamy oil viscosity measurementRésumé
The rheological studies of gas-oil dispersion are essential for understanding the foamy oil flow behaviours related to high production rates in many heavy oil reservoirs. The viscosity of gas-oil dispersion is one of the critical parameters that influence the recovery in solution gas drive process. Only a few laboratory experimental studies have been carried out to investigate the effects of live oil viscosity and foam quality on the apparent viscosity of the foamy oil during the depressurization process. As for gas-in-oil dispersion, the continuous phase is the supersaturated live oil during the depressurization process. It is essential to quantify the … Lire la suite
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2019 — Experimentally Testing the Tree-Factor Structure of Socio-Emotional ComparisonsRésumé
Evolutionary theories posit that comparisons to others are essential in determining one’s relative position in a social hierarchy. Social comparison information can help guide behaviour in several ways, but has been associated with different adverse psychological issues (e.g., depression; stress). However, a purely cognitive view of social comparisons ignores the emotional content that usually accompanies them. A novel construct named socioemotional comparisons (SEC) is theorized to bridge the cognitionemotion gap. SEC is defined as experiences of negative affect following a subjective evaluation of unfair or unjust disadvantage compared to another. These comparisons are represented by three factors: malicious envy, low … Lire la suite
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2019 — Examining Health Anxiety and Anxiety About Fetal Health During PregnancyRésumé
Background: Health anxiety refers to excessive preoccupation or worry about one’s health. The experience of health anxiety during pregnancy is unclear. The limited existing research provides mixed results regarding the impact of pregnancy on health anxiety (e.g., Kowalyk, Hadjistavropoulos, & Jones, 2009; Savron et al., 1989). Purpose: The current investigation was designed to assess health anxiety in pregnant women, examine the relationship between health anxiety and fetal health anxiety, and examine the relationships between health anxiety, fetal health anxiety, associated constructs (i.e., general anxiety, depression, anxiety sensitivity, intolerance of uncertainty), and core health cognitions. In addition, inductive content analysis of … Lire la suite
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2019 — Trunk Muscle Activation Patterns During the Barbell Back Squat with Progressive Load and InstabilityRésumé
Low back injuries are common in sports that involve repetitive/high spinal loading. The muscular system is largely responsible for maintaining proper spinal posture and efficiently transferring load during movement to protect the spine from excessive strain. Atrophy/reduced recruitment of specific trunk muscles are associated with low back pain, suggesting changes in recruitment patterns and compensations that may lead to additional stress on spinal structures. Athletes involved in high loading sports (e.g., football) engage in strength training programs that typically involve high load compound movements to increase strength (e.g., back squat) and stability training. It may prove effective to increase the … Lire la suite
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2019 — Asymptotic Analysis of Method of Moments Extimators of Paramaeters p and m For The Binomial DistributionRésumé
The aim of the thesis is to study asymptotic properties of estimators for the Binomial distribution by the Method of Moments and an application of these estimators to evaluate characteristics of the neuromuscular junction (synapse). To achieve these goals it is necessary to solve the following problems: i. Derivation of estimates of parameters of Binomial distribution by the Method of Moments; ii. Derivation of the parameters of the asymptotic normality by the Delta-method; iii. Comparison of the derived asymptotic with the true probabilistic characteristics of the estimators by the method of statistical simulations; iv. Estimation of parameters m and p … Lire la suite
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2019 — Accessing Intimacy: The Experience of Younger Long-Term Care ResidentsRésumé
The sex and intimacy needs of persons with disabilities are increasingly highlighted in research, particularly during the last two decades. There is also research to examine the experience of staff within long term care related to the sex and intimacy needs or behaviours of long-term care residents. However, there is limited research examining the experience of sex and intimacy from the viewpoint of residents, particularly younger residents of long-term care. This qualitative research study uses a phenomenological approach to explore the experiences of persons with disabilities, under the age of 70, living in a long-term care facility, accessing a sexual … Lire la suite
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2019 — Improving Implementation of Mental Health Literacy in a Middle Years ClassroomRésumé
The purpose of this practical action research study was to improve my implementation of mental health literacy to middle-years students by using an inquiry-based approach with the intention of understanding how to engage with and address relevant mental health concerns alongside my students. In addition, I hoped to learn about the needs of my own practice related to mental health literacy in order to address my perception of ever-increasing mental health issues arising in my classroom. Twenty participants, both male and female from my homeroom classroom, took part in the study. Data was collected using initial and exit interviews, exit … Lire la suite
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2019 — Efficacy of Internet-Delivered Cognitive Behavioural Therapy Following An Acute Coronary Event: A Randomized Controlled TrialRésumé
Depression and anxiety are common among people who have experienced an acute coronary event (e.g., heart attack). Multidisciplinary cardiac rehabilitation programs often focus on reducing risk factors associated with future cardiac events (e.g., smoking, lipid management), however, mental health interventions are not routinely available following significant coronary events. The present study sought to explore the efficacy and acceptability of an Internet-delivered cognitive behavioural therapy program (Cardiac Wellbeing Course) for managing depression and anxiety symptoms among participants who experienced an acute coronary event. Participants were randomized to an intervention (n = 25) or waiting-list control group (n = 28). Symptoms were … Lire la suite
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2019 — Application of Machine Learning Techniques for the Classification of Lower Back Pain in Human BodyRésumé
Advancement of technology in the field of medical science is providing promising results in this modern era. Intelligent systems designed especially for this sector not only help doctors to solve complex situations but also take comparatively lesser computational time which can be a really important factor as longer time in critical cases may lead to death of a patient. These days, everyone experiences long waiting time to see a doctor. It would be really desirable if an Intelligent System makes the work easy for a doctor by giving accurate decisions after processing patient’s data, reducing examination time for the current … Lire la suite
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2019 — Weil Representations of Unitary GroupsRésumé
Let A be a finite, commutative, local and principal ideal ring, with maximal ideal r, endowed with an involution , possibly trivial, and let R be the fixed ring of . We distinguish three types of extensions A=R: symplectic, when is trivial and A = R; unramified, when the involution that induces on A=r is nontrivial; ramified, when the involution that induces on A=r is trivial. The last case further divides into two cases, even or odd, depending on the nilpotency degree of r. Whatever the case, let Um(A) be the unitary group of rank m over A associated to … Lire la suite
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2019 — Assessment of Greenhouse Gas Emissions From Spring Wheat Cropping System in SaskatchewanRésumé
The assessment of GHG emissions from spring wheat cropping system in Saskatchewan was conducted in this study. A general emission assessment model was developed. The main sources of GHG included emissions from farming operations, emissions from the manufacturing and transportation of N/P fertilizer, emissions from herbicides usage, and direct and indirect emissions from agricultural land. A case study based on spring wheat in Saskatchewan was then investigated. The results show that the total GHG emissions mainly come from the manufacture, storage, delivery, and application of nitrogen and environmental conditions have a significant effect on the total GHG emissions. In addition, … Lire la suite
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2019 — Electrical Considerations for Siting of a Small Modular Reactor: A Case Study of Saskatchewan, CanadaRésumé
Distributed generation resources (DGs) can help to mitigate the growth in electricity demand and the large burden on the central grid by reducing transmission and distribution power losses. DGs are typically small-scale power sources that can produce electricity close to the distribution network. Choosing a suitable site for a new DG is a critical step in DG planning for long-term e cient power generation. Locating optimal sites for DGs involves consideration of many factors (e.g., such as economic, social, environment, geographic, availability of electrical infrastructure, etc.). Solar panels, micro wind turbines, small hydropower units, fuel cells and Small Modular Reactors … Lire la suite
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2019 — Distorting the Reality of Climate Change: Anti-Reflexive Narratives of Conservative Think Tanks in Canadian NewspapersRésumé
Despite the existential threat to life on this planet posed by climate change, many North Americans continue with ‘business as usual’. While the substance of the debate is different, in each country awareness of the gravity of the situation seems lacking. Given that the perception and meaning of reality determines how it is acted towards, this thesis examines how climate change in Canada has come to be discursively constructed so that its reality is recognized, but its seriousness is overshadowed by other issues. Western society is transitioning from modernity into reflexive modernization whereby pre-existing institutions and underlying principles are challenged … Lire la suite
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2019 — Effects of Exercise Training on Heart Failure Measured Using SeismocardiographyRésumé
Heart failure has become a growing health concern across most of the Western world and will soon become a global health focus. The nature of the disease presents with a very high mortality rate. In Canada alone, the average mortality rate is approximately 50% within the first five years of diagnosis [1]. Exercise has now become a common treatment modality for many chronic disease conditions including heart failure. As heart failure advances, the myocardium goes through a remodeling phase that alters the contractility of the heart and its pumping efficiency. Exercise is known to lead to a positive remodeling of … Lire la suite
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2019 — Neuroprotective Effects of Cannabidiol Following Concussion: A Case StudyRésumé
Mild traumatic brain injury, such as concussion, can lead to physiological impairments. Although these changes in physiology are not always characterized by symptoms, they can be reflective of how the body is attempting to adjust and adapt to these consequences. Cannabidiol can aid with some of the physiological and symptomatic changes due to concussion, and the therapeutic properties of cannabidiol can be enhanced when administered with other cannabinoids, specifically, tetrahydrocannabinol. These cannabinoids can work together on the endogenous cannabinoid system within an individual, thereby influencing their effects on cerebrovascular and cardiovascular physiology. Specifically, the psychoactivity of the cannabinoids can regulate … Lire la suite
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2019 — Multi-Level Factorial Sensitivity Analysis of REGCM4 Physical Scheme Combinations Over CanadaRésumé
Climate change has been considered as one of the most important problems around the world since it always causes severe, extensive and irreversible consequences. It is thus desired to generate reliable high-resolution climate projections for supporting impact assessments under changing climate conditions. In this study, a multi-level factorial design has been proposed to conduct the sensitivity analysis of RegCM4 physical scheme combinations. In detail, the major contributing factors for four climatic variables are selected based on the predetermined contribution level; then the F-test has been applied to evaluate the statistical significance of each individual physical scheme or the interaction among … Lire la suite
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2019 — Identification of an antibiotic biosynthetic gene cluster in pantoea agglomerans B025670Résumé
The rise of multi-drug resistant isolates of several pathogens, including Gram-negative members of the Enterobacteriaceae, requires the identification of new antimicrobials that can target them. Members of the genus Pantoea, a Gram-negative bacterial group, produce natural products with antimicrobial properties. A survey of a Pantoea collection against clinically relevant pathogens, including VRE, Enterobacter, Klebsiella, Citrobacter and Kosakonia, revealed 25 strains that produce at least one antibiotic against one or more of these pathogens. Of these strains, Pantoea agglomerans B025670 produces at least one antibiotic (denoted PNP-4) that has activity against strains of Enterobacter and Kosakonia. The conventional genetic approach was … Lire la suite
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2019 — Facial Cues Of Pain In Older Adults: Predicting The Accuracy of Observer Pain RatingsRésumé
Even though people with severe dementia have limitations in their ability to communicate subjective states, nonverbal pain cues, such as facial expressions and other behaviours, have been used successfully as a proxy for verbal pain reports. Although these cues have been shown to be valid in standardized assessments of pain, the extent to which observers, such as caregivers of older adults, rely on specific pain-related facial responses (e.g., movements of the eyes or the mouth) when judging pain remains unclear. Undergraduate student observers viewed three types of videos of individuals expressing pain (younger patients, older patients without dementia, and older … Lire la suite
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2019 — Exploring cultural boundries of sport fandom through critical discourse analysisRésumé
This research aimed to critique the notion that sport solely brings people together by exploring discourses related to the creation of cultural boundaries by sport fans through critical discourse studies (CDS) (van Dijk, 2016; Martin, 2002). The three research questions for this dissertation are: How do sport fan-produced texts on social media create, reinforce, or challenge discourses? How do these discourses contribute to the production of cultural boundaries of sport fandom on Twitter? How does drawing cultural boundaries through discourses represent the simultaneously inclusive and exclusive nature of sport fandom on Twitter? A critical discourse analysis (CDA) methodology was employed, … Lire la suite
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2019 — Dynamic Scheduling and Sequencing of Machines and Automated Guided Vehicles Using Genetic AlgorithmsRésumé
Scheduling of machines has been interested in flexible manufacturing systems due to the flexibility and simultaneous task process capability of such production systems. Advanced material handling systems such as automated guided vehicles are being used in flexible manufacturing systems. Automated guided vehicles are flexible and easy to utilize in flexible manufacturing systems. Therefore, dynamic simultaneous scheduling and sequencing of flexible manufacturing systems and automated guided vehicles, are considered as the main focus of this study. Scheduling of machines and automated guided vehicles, if considered separately, are NP-Hard problems. Similarly, simultaneous scheduling of machines and automated vehicles are NP-Hard. Although there … Lire la suite
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2019 — Studies of Solubility of CO2 in Ionic Liquids, Kinetics, and Heat of Reactions of CO2 in Promising Cyclic AminesRésumé
In many industrial processes such as in carbon capture, solvents play an important role, acting as a media for extraction of products or for chemical reactions. It is important to find more energy efficient physical or chemical solvents that meet industry needs while limiting the environmental and health risks. A new type of physical solvents (ionic liquid) was investigated for potential use in gas sweetening operations or in mixtures with amines for flue gas cleaning. Six ionic liquids were investigated for their capacities to absorb CO2 at various temperatures and pressures. Henry’s law constants, enthalpies, and entropies of absorption were … Lire la suite
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2019 — Individual Factors and Patient Appraisal of Betrayal in the Medical SystemRésumé
When an institution (e.g., medical system) fails to prevent or respond supportively to a traumatic event (i.e., betrays one’s trust), the institution itself exacerbates the individual’s psychological distress (Smith & Freyd, 2013). In the case of childbirth, dissatisfaction with medical interactions during labour and delivery is linked to postnatal posttraumatic (Grekin & O’Hara, 2014). The current study employed a longitudinal design (N = 171) to investigate the impact of institutional betrayal on women’s postpartum mental health, and to better understand the role of individual factors (i.e., attachment and personality factors) in explaining this link. Results showed that individuals with an … Lire la suite
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2019 — Exploring the Adoption and Implementation of Healthcare Innovation: Case Studies of Two Antimicrobial Stewardship Programs in SaskatchewanRésumé
Health innovations can play an important role in improving quality of care and in reducing healthcare costs. However, even promising innovations are not always successfully implemented because the process can be challenging. Thus, there is a significant gap between healthcare innovations and their application in routine practice. In this study, I explored determinants that influence adoption and implementation of a healthcare innovation, using the Regina Qu’Appelle Health Region (RQHR) and the Saskatoon Health Region (SHR) Antimicrobial Stewardship Programs (ASPs) as case studies. Considering the increasing risks of antimicrobial resistance, international bodies such as the World Health Organization, United Nations, the … Lire la suite
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2019 — Self-Compassion Training for Individuals With Social Anixety Disorder: A Randomized Controlled TrialRésumé
Social anxiety disorder (SAD) is an impairing disorder that is often chronic because many individuals meeting diagnostic criteria avoid seeking treatment due to the stigma associated with receiving mental health care (Olfson et al., 2000). Self-compassion is the ability to offer oneself kindness and compassion in response to failure, suffering, or insecurity (Neff, 2003a). Research evidence has supported the effectiveness of self-compassion training programs at improving psychological well-being in general community samples (e.g., Neff & Germer, 2013); nevertheless, research is needed regarding the effectiveness of self-compassion training in clinical samples. The current randomized controlled trial was designed to (a) examine … Lire la suite
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2019 — Furrows of the Field: Methodology in Writing The Religious History of the Canadian PrairiesRésumé
The primary concern of this thesis is explanation of the drastic decline in church attendance that has characterized Prairie religious history, and Canadian history more broadly, over the course of the twentieth and early twenty first centuries. In the case of the Canadian Prairies as a region, this transformation has also been tied up with the change from a heavily social gospel influenced society based on the highly valued ethic of co-operation to a society that is increasingly non-church going and which more highly values the ethic of individualism. While more recent Prairie history has seen the region incorporated into … Lire la suite
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2019 — Internet-Delivered Cognitive Processing Therapy for Individuals with a History of Bullying Victimization: A Randomized Controlled TrialRésumé
Bullying victimization is directly associated with a wide array of longstanding psychological problems (e.g., Takizawa Maughan, & Arseneault, 2014; Vaillancourt et al., 2013). Nevertheless, few comprehensive victim-tailored interventions exist that explicitly target the negative impact of bullying. Evidence from both neurobiological and psychological research suggests that victims experience bullying as trauma; therefore, treating the distress associated with bullying victimization using trauma-focused intervention may be beneficial. The purposes of this randomized controlled trial were to: (a)test an internet-delivered, therapist-guided (i.e., therapist monitored client progressthrough the treatment modules and provided feedback and support through secure e-mail messaging) and content-modified (i.e., to fit … Lire la suite
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2019 — Reading Between The Lines: A Critical Examination of Social Work Education in Vietnam Through The Eyes of the EducatorsRésumé
The profession of social work in Việt Nam is rebuilding, and as a result, social work education is in a period of rapid change. However, the literature about social work in Việt Nam is sparse, and there is limited research describing social work education in detail or the perceptions of Vietnamese social work educators regarding the current state of social work education in Việt Nam. Việt Nam’s history of colonialism and professional imperialism within international social work points to the need for a closer examination of social work education in Việt Nam and the perception of social work educators to … Lire la suite
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2019 — The Effect of Isokinetic Exercise for Prehabilitation: ACL ReconstructionRésumé
Preparing for the stress of Anterior Cruciate Ligament Reconstruction (ACLR) surgery through prehabilitation may improve strength and function before surgery, and if effective, has the potential to contribute to postoperative recovery. The purpose of this experimental study was to investigate the effectiveness of using isokinetic exercise for prehabilitation of patients with complete ACL tears, awaiting ACLR surgery. Patients with complete ACL tears, and scheduled for ACLR were randomized into the isokinetic exercise training group or the control group. The isokinetic exercise training group completed an isokinetic strengthening program that included isokinetic concentric exercise for the injured knee, 20 times over … Lire la suite
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2019 — Exploring Relationships Among Passion, Self-Compassion, Fear of Self-Compassion, Deliberate Practice, and Performance in Canadian Women's Fastpitch AthletesRésumé
Research has been conducted on passion through a variety of activities, including sport. Passion, according to Vallerand et al. (2003), is “a strong inclination toward an activity that individuals like [or love], that they find important, in which they invest time and energy, and which comes to be internalized into one’s identity” (p. 507). Defined by the dualistic model of passion, harmonious passion describes a passion freely chosen because it had become valuable and meaningful to a person; conversely, obsessive passion describes a passion where individuals feel compelled to participate because some feelings of social acceptance, self-esteem, etc. are attached … Lire la suite
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2019 — Application of Predictive Analytics in Estimating Mechanical Properties for Investment CastingsRésumé
The investment cast parts are widely consumed in aviation, automotive, power generation, biomedical, and ship-building industries. The investment casting process is known for manufacturing complex shape parts with near-net finish. This process starts by making wax pattern similar to the shape of finished cast part. These patterns are assembled on a tree structure. A ceramic mold is formed around the tree assembly by repeatedly coating the ceramic mold with ceramic slurry and sand until the desired ceramic mold strength is obtained. The wax is then removed from the ceramic mold by heating it in the furnace. The molten metal is … Lire la suite
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2019 — Advanced Numerical Modeling Techniques For Modern Waste Management SystemsRésumé
This thesis presents original results to the advancement of numerical modelling of a modern waste management system with respect to generation, collection, and disposal of non-hazardous solid waste. The first part of the thesis specifically look at lag times relating to variables that attempt to predict municipal yard waste generation using machine learning approaches. Weekly averaged climatic and socio-economic variables are screened through correlation analysis and the significant variables are then used to develop yard waste models. These models then utilize artificial neural networks where the variables are time lagged a different number of weeks. Optimal lag times for each … Lire la suite
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2019 — Sound Radiation Responses and Acoustic Behvior of Sandwich PanelRésumé
Sandwich structures with decent sound insulation and absorption properties have been widely used in the engineering fields such as aerospace engineering, marine engineering and civil and construction engineering. Investigations on the acoustic behavior of sandwich structures is of practical importance, not only for engineers but to researchers in the field. A numerical study of the vibro-acoustic and sound transmission loss (STL) of an aluminum honeycomb core sandwich panel with fabric-reinforced graphite (FRG) composite face sheets is performed in the present research. The honeycomb sandwich structure, faced with an FRG composite face sheet, has acoustic advantages over other types of sandwich … Lire la suite
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2019 — Flow Mechanisms and Transient Pressure Analysis Study For Multi-Stage Fractured Horizontal Wells In Shale Gas ReservoirsRésumé
Compared with conventional natural gas resources, shale gas reservoir, as a typical unconventional natural gas resource, has the characteristics of low porosity and low permeability. Therefore, the fractured horizontal well technology has been widely used in shale gas reservoir development. At the same time, more and more attention has been paid to the study of seepage mechanism. At present, conventional research on the seepage theory of fracturing horizontal wells in shale gas reservoirs are not very systematic, and the comprehensive consideration of adsorption, desorption and diffusion in the seepage model, especially in the linear flow model, is rarely given. Comprehensive … Lire la suite
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2019 — Investigating the Effects of Task Characteristics and Educational Interventions on Intuitive Statistical BiasesRésumé
Past research indicates people have some capacity to intuitively (i.e., informally) detect, estimate, and apply information derived from important data characteristics (e.g., mean, sample size, SD) in various statistical judgment tasks. This research has also found that people are generally capable of making intuitive between-group comparisons, which involve comparing groups of data and making judgments on these data. However, people also tend to exhibit a bias in such comparisons against normatively integrating the withingroup variability (e.g., standard deviation; SD) of the groups with the between-group variability (e.g., mean differences) while making between-group comparisons. This can lead to errors in judgment, … Lire la suite
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2019 — A Shape for Queerness: Glimpses, Loops, Holes, LanguageRésumé
A Wreath of Snakes, A Lexicon Devil, A Hole in Time, A Single Thought is a sculptural installation of 24 large-scale drawings and an artist’s book. The work is concerned with the formation of consciousness and the ways that the shared experience of queerness affects notions of time, lineage and orientation. It examines the way queerness creates a non-reproductive lineage which stops, starts and skips across time. This installation is an articulation of the contradictory bumps and associations, both obvious and esoteric, which accompany my prolonged contemplation on the subject of queerness and the making of this work. This support … Lire la suite
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2019 — The Heart of Relics: Catholic Relics, Affect, and the Heart of Brother AndreRésumé
Catholic relics elicit strong emotion and are thought to have healing powers; they are an important part of Catholic practice, yet their affect is not often explicitly explored. Arguing that relics are affective, or emotionally impactful, because they are part of a system that encourages intense emotional reactions through sensation and perception, this thesis examines the transmutability of Catholic relics and their emotional impact beyond religious doctrine using an interdisciplinary theoretical framework of affect, emotion and empathy. Locating Catholic practice within a twentieth-century Quebec context in the form of a case study, this investigation of affect is situated through events … Lire la suite
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2019 — Dental Hygiene Program Graduates’ Experiences with Transition into Private Practice: A Phenomenological StudyRésumé
This qualitative study examined the transition to private practice experiences of recently graduated dental hygienists (DHs) from a dental hygiene program. A hermeneutic phenomenological approach was taken to understand the lived experiences of six study participants as they progressed from novice students to competent clinicians. Participants were invited to submit personal journals that expressed their experiences throughout the first six months of practice. These graduates also participated in individual semi-structured interviews in order to elaborate on their transition experiences discussed in their journals. Four key themes emerged from the data collected regarding the importance of: a support system or mentor; … Lire la suite
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2019 — From the Distal to the Proximate: Exploring Social Cognitions in Risk-takingRésumé
Risk-sensitivity theory suggests people engage in risk-taking when they cannot fulfill needs through risk-averse behavior. Both proximate mechanisms (e.g., affect, social cognition) and distal mechanisms (e.g., early developmental environments) have been shown to influence risk-taking. However, little is understood about how such mechanisms contribute to the perception of benefits derived from risk-taking. A pilot study (n = 172) and follow-up confirmatory study (n = 295) were conducted to identify which proximate and distal mechanisms were associated with the perception of increased benefits from risk-taking. I specifically examined if benefit perceptions of risk-taking were associated with distal, developmental inputs (early environmental … Lire la suite
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2019 — A Comprehensive Study and Mechanism Investigation for Alkaline-Heavy Oil Recovery ProcessRésumé
Alkaline flooding is an important branch of chemical enhanced oil recovery (EOR). The complexity of alkaline flooding study is mainly embodied by its chemical reaction required by alkalis to react with oil acids. Consequently, in-situ surfactants are generated for various emulsification phenomenon. It is known that alkaline flooding performance in oil recovery is subjected to the emulsion type generation, thus, of great importance to alkaline flooding study is its mechanism investigation and saponification rate examination. In this study, a modified bottle test method that assesses major emulsion type formation for preliminary prediction of alkaline flooding performance in oil recovery is … Lire la suite
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2019 — Aquatic Toxicity of Pharmaceuticals and Personal Care Products to AlgaeRésumé
This dissertation research provides a comprehensive study on aquatic toxicity of Pharmaceuticals and personal care products (PPCPs) to algae. The research studied dose- and time-dependent effects, multiple endpoint responses, algae species sensitivity, interactive environmental factors, and interactive multiple contaminents, as well as advanced emerging techniques. The toxicity of triclosan and carbamazepine to Chlorococcum sp. was studied using synchrotron-based Fourier transform infrared (SR-FTIR) spectromicroscopy. Triclosan can affect algae by inhibiting fatty acid synthesis and causing protein aggregation. Carbamazepine can disorganize phospholipid bilayers and attack specific proteins to disturb the transportation of ions and CO2. Carbamazepine-exposed cells developed a resistance with time … Lire la suite
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2019 — Lower Bounds and Algorithms for Searching NetworksRésumé
Research on graph searching has recently gained interest in computer science, mathematics, and physics. This thesis provides new results on two graph search models, namely fast searching and the zero-visibility cops and robber model. Given a graph that contains an invisible fugitive, the fast searching problem is to find the fast search number, i.e., the minimum number of searchers to capture the fugitive in the fast search model. This model was first introduced by Dyer, Yang and Ya¸sar in 2008. Although the literature provides a number of results on fast searching, many properties of the fast search number have not … Lire la suite
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2019 — Modeling The Fluid Flow in Low-Permeability Unconventional Reservoirs Across ScalesRésumé
In the last decade low-permeability unconventional reservoirs (i.e., shale and tight formations) become an increasingly important source of oil and especially gas supply in the world. Low permeability reservoirs are characterized with small grain sizes (m), low permeability (< 0.1mD), small porosity (<10%) and high total organic carbon (TOC) (0.8-20wt%). The productivity of shale and tight reservoirs heavily depends on the interaction between reservoir rock matrix and multi-stage fractured horizontal wells (MFHWs). To predict and optimize unconventional reservoirs’ production behavior, this study tries to model the fluid flow across scales-from the pore scale to the reservoir- scale. Shale matrix … Lire la suite
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2019 — The long-delayed repatriation of the Sakhalin Koreans: Cold war challenges and resolutions, 1945-1992Résumé
During World War II (WWII), tens of thousands of Koreans were forcibly mobilized to Karafuto (southern Sakhalin Island) to serve as labourers in Japan’s wartime economy. When the war ended in August 1945, the Soviet Union occupied the region and the Koreans ceased to be Japanese colonial subjects. While 99% of the Japanese in Karafuto were repatriated by April 1950, the Koreans became trapped in a Cold War standoff between the Soviet Union, North Korea, and South Korea that was not fully resolved until the 1990s. As such they became double victims of global forces that paid little heed to … Lire la suite
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2019 — Value-Based Connected Autonomous Vehicles Business ModelingRésumé
Connected Autonomous Vehicles (CAV) industry is expected to grow rapidly in the upcoming years. Many enterprises will need to adapt new techniques to be able to participate in CAV growth. Although some manufacturers promise high level of automation by 2025, the needed infrastructure investment will take longer time due to the huge investments’ capital and the time needed for constructions. CAV will need to continuously communicate with their surroundings in order to guarantee efficient and safe trips. One of the main communicating methods is Vehicle to Infrastructure, which mainly depends on Roadside Equipment in North America. There’s a need to … Lire la suite
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2019 — Engagement Paper for the Documentary "The Nation of Women"Résumé
In traditional Chinese culture, the only legitimate heirs to a family are the male family members. Since I am the only daughter of my father, and he is the only son of my grandparents, our family symbolically ends with me. This reflects thousands of years of patriarchal Confucian gender prejudice and oppression of women. By a fortuitous opportunity, in the summer of 2007, Dr. Wang Lin asked me to help with her research on a Chinese matriarchal society – the Mosuo community. I was impressed by their unique culture, tradition and social structure, and decided one day to make a … Lire la suite
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2019 — Thermodynamic Phase Behavior and Miscibility Studies of Confined Fluids in Tight FormationsRésumé
In this study, the nanoscale-extended theoretical models and experimental nanofluidic system are developed to calculate and measure the thermodynamic phase behavior and miscibility of confined pure and mixing fluids in tight formations. First, a new nanoscale-extended equation of state (EOS) is developed to calculate the phase behavior of confined fluids in nanopores, based on which two correlations are modified to predict the shifts of critical properties. The nanoscale-extended EOS model has been proven to accurately calculate the phase behaviour of confined fluids. The thermodynamic phase behavior of confined fluids in nanopores are substantially different from those in bulk phase. The … Lire la suite
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2019 — Engagement Paper for the Animated Film MASKRésumé
Mask is a stop motion animation film that aims to discuss the impact of emigration on the newcomer as a subject within established societies. The story takes place within an imagined setting, in which a mask is the only official signifier of one’s identity. However, the story still reflects my personal experience in terms of language proficiency and a newcomer’s adjustments to living in Canada. Because of the film’s allegorical characteristics, one of my expectations was to have a diversity of interpretations of the film depending on the viewers’ personal background and experience, rather than the meaning being derived just … Lire la suite
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2019 — Decomposition of Certain Representations Into A Direct Sum of Indecomposable RepresentationsRésumé
Representations of quivers and posets are produced by persistent homology. It is possible to decompose such representations into direct sums of indecomposable representations. The indecomposable representations of quivers and posets that arise from one dimensional persistent homology are well understood. However, the same is not true for multidimensional persistent homology. This thesis finds such a list of indecomposable representations for a very simple case of a poset that can arise from multidimensional persistent homology, and proves that it is possible to decompose a representation of such a poset into a direct sum of these indecomposables. Lire la suite
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2019 — Enhanced Heavy Oil Recovery Using CO2 Huff 'N' Puff ProcessRésumé
CO2 based enhanced oil recovery methods, such as continuous CO2 injection, intermittent CO2 injection, water-alternating CO2 injection, and CO2 huff 'n' puff, are successfully implemented in heavy oil reservoirs. Among them, the CO2 huff 'n' puff method has been proved as an applicable recovery method. Although many previous researches were conducted on the CO2 huff 'n' puff process applied in heavy oil reservoirs, some technical issues are still not investigated, such as non-equilibrium phase behaviors of foamy oil flow, CO2 diffusion into heavy oil, and the production performance in CO2 huff 'n' puff process coupled with non-equilibrium phase behaviors and … Lire la suite
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2019 — Transformational Learning Experiences: Changing Relationships and Comfort ZonesRésumé
The purpose of this study was to explore how social and familial relationships are challenged, altered, or sustained following a transformational learning experience. In particular, I explored how students in a university graduate education course that used a transformational approach, experienced changes. The course, Participatory Methodologies and Approaches to Research, Facilitation, and Community Engagement, was offered at the University of Regina in the Summer of 2015. The study focused on the ways three students, as study participants, navigated their way through new and existing social networks and how the transformational experience altered pre-conceived ideas and perceptions. The qualitative study used … Lire la suite