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2016 — Mass Transfer Studies on Catalyst-Aided CO2 Desorption in a Post Combustion CO2 Capture PlantRésumé
Two solid acid catalysts of contrasting characteristics were studied on their effects on the liquid-side mass transfer performance for the desorption of CO2 from CO2-loaded 5M monoethanolamine (MEA) solvent. The characteristics of the catalysts were both physical (surface area of catalyst which increases the interfacial area for mass transfer) and chemical (the catalyst acid sites to catalyze the desorption of CO2). Protonated zeolite socony mobile-5 (HZSM-5) representing a higher Brφnsted/Lewis acid site ratio in a catalyst and γ-Al2O3 representing lower Brφnsted/Lewis acid site ratio were used. The experiments were conducted in a 1.07 m height x 0.051m diameter packed column … Lire la suite
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2016 — An Exploration of Leisure Innovation in the Self-Management of Co-Morbidities in Older AdultsRésumé
Leisure has been shown to be relevant in coping with, adjusting to and adapting to negative life events such as chronic illness (Kleiber & Hutchinson, 2010) and therefore, it may play an important role in accomplishing the tasks of self-management. However, disability resulting from chronic illness can limit leisure participation. Innovation theory of successful aging may provide insight into leisure among older adults living with chronic conditions. The purpose of this study was to explore the lived experience of leisure innovation among older adults living with more than one chronic illness. A hermeneutic phenomenological design was used to explore leisure … Lire la suite
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2016 — Effects of the Intergenreational Residential School Experience and Negative Racial Stereotyping on Ojibwe Speech Patterns in Mid-Northern Ontario AnishnawbekRésumé
The research project The Effects of the Intergenerational Residential School Experience and Negative Racial Stereotyping on Ojibwe Speech Patterns in mid-Northern Ontario Anishnawbek was undertaken in the Sagamok Anishnawbek First Nation area of mid-Northern Ontario. It was anticipated that three groups of participants would participate: 1) speakers who attended residential school and who lost then subsequently regained their fluency; 2) speakers whose parent(s) attended residential school; and 3) speakers who did not attend or who had minimal attendance at residential school and who never lost their fluency. Instead, two groups of self-identified Ojibwe speakers emerged: 1) those who did not … Lire la suite
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2016 — Saskatchewan Electrical Power Systems Planning under Stochastic Conditions and Federal Climate Change RegulationsRésumé
Greenhouse gas (GHG) emissions from industrial activities are the key drivers of climate change impacts in many regions around the world. In 2012, Environment Canada and Climate Change published its first GHG emissions performance standards, the Reduction of Carbon Dioxide Emissions from Coal-fired Generation of Electricity Regulations, to set up the performance standards for coal-fired generation units to reduce GHG emissions in Canada. Saskatchewan is concerned about the impact of the published regulations on future electricity generation system planning and GHG. Specifically, the regulations result in a shift from existing coal-fired generation units towards other high efficient power generation units … Lire la suite
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2016 — Real-Time Sentiment-Based Anomaly Detection in Twitter Data StreamsRésumé
Twitter has over 316 million active users and the engagement of these Twitter users results in the rapid production of data, notably in the context of popular topics (such as news stories, politics, and sports). This data is available in the form of data streams, which has led many researchers to develop analysis techniques especially for Twitter data streams. Although anomaly detection in time series is a well established research area, its application to detect sentiment-based anomalies in large volumes of streaming data began recently. A sentiment-based anomaly is de ned as a sudden increase in the time series of … Lire la suite
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2016 — Experimental Study on Improving the Waterflooding Potential in Different Heavy Oil-Solvent SystemsRésumé
Due to the unfavourable mobility ratio of heavy oil and water, waterflooding cannot be used successfully without the support of natural energies (such as solution gas drive, foamy oil effect, expansion effect, etc.) in heavy oil reservoirs. In previous studies, the parameters related to the pressure change, such as the injection rate, the start time of waterflooding, the voidage replacement ratio (VRR) control, etc., have been studied to take full advantage of the nature energies in heavy oil waterflooding processes. However, few researchers have directly studied the pressure control strategies to improve the waterflooding potential in heavy oil reservoirs. Meanwhile, … Lire la suite
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2016 — Stream Flow Simulation of a Canadian Prairie Watershed: Assessment of the Impact of Wetland Drainage and Climate Change on the Hydrology of the Pipestone Creek, SaskatchewanRésumé
Within the scope of Watershed Evaluation of Beneficial Management Practices project in Saskatchewan, the Soil Water Assessment Tool model has been calibrated and validated at daily and monthly time steps for a watershed within the Prairie Pothole region of North America. The model uses the concepts of the hydrological equivalent wetland, limited weather data, and the gross and effective drainage areas introduced in the 1950s to simulate flows at one streamflow gauge in a 2,242 km2 watershed. The Sequential Uncertainty Fitting algorithm version 2 was used to calibrate and validate the model at daily and monthly time steps for the … Lire la suite
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2016 — Life Cycle Assessment of Hypothetical Canadian Pre-Combustion Carbon Dioxide Capture Process with Air Pollutants Dispersion and Health Risks AssessmentRésumé
The methodology of life cycle assessment has been applied in order to evaluate the environmental performance of the Saskatchewan lignite Integrated Gasification Combined Cycle (IGCC) based electricity generation with and without pre-combustion carbon dioxide (CO2) capture process from a full life cycle perspective. The emphasis is put on environmental performance of the comparison between IGCC systems (with and without CO2 capture) and the competing lignite pulverized coal electricity generating station in order to reveal which technology offers the most positive environmental effects. Moreover, ambient air pollutant modeling, the human health benefit (health outcomes) and human health risk assessment are also … Lire la suite
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2016 — Gender, Race, and Custodial SpaceRésumé
Indigenous* people have higher levels of representation in correctional facilities compared to their representation in the Canadian adult population. This trend is consistent within the female inmate population. In 2008/2009 the highest proportion of female admissions in Canada was found in Saskatchewan where Indigenous women comprised more than 85% of admissions (Calverley, 2010) despite comprising just 14.9% of Saskatchewan’s total population (Indigenous Population Profile, 2006). This over-representation presents a challenging dilemma. The racial identity assigned to Saskatchewan custodial facilities is Indigenous, which reinforces the long-standing societal belief Indigenous people are characterized by degeneracy and supports the continued exclusion of Indigenous … Lire la suite
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2016 — A Neutron Measurement System Design for Pulsed Triga Reactor Experiment at Texas A&M UniversityRésumé
This thesis focuses on designing, building, and analyzing a neutron detection system to measure neutron fluxes of a TRIGA reactor at Texas A&M University to verify newly developed simulation codes. Such a system must be designed to cover a wide range of neutron fluxes in transient power surges (up to 1015 neutrons/cm2/s, lasting 20 to 50 ms) and in steady-state operations (1013 neutrons/cm2/s at full power of one megawatt). The size of the detector is limited to a maximum of 9.525 mm outer diameter including housing. The detection system consisted of slow neutron detectors, associated electronics, data acquisition and storage … Lire la suite
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2016 — Image Reconstruction from Limited Radiographic ProjectionsRésumé
Radiography is a non-destructive technique that uses penetrating radiation, such as X-rays, to image the internal structure of an object by providing projections of the material content on a two-dimensional screen. Computer Tomography (CT) uses multiple-projections to reconstruct a pixelated cross-section image. The number of projections in CT has to be at least equal to the number of reconstructed pixels in order to be able to reconstruct a non-ambiguous image. However, often imaged objects have a known or uniform material content and are examined to detect anomalies or defects. Such known information can be used to reconstruct tomographic images using … Lire la suite
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2016 — Petrography, geochronology, oxygen isotope geochemistry and fluid inclusion analysis of the Maw Zone REE deposit: new insights on the relationships with unconformity-related uranium mineralization in the Athabasca Basin, CanadaRésumé
The Maw Zone REE deposit is located in the southern part of the basin between Key Lake and the McArthur River unconformity-related uranium (URU) deposits, stratigraphically about 130 meters above the basal unconformity and confined to the MFd member of the Manitou Fall Formation. The spatial association of this deposit with URU deposits led geologists to consider a genetic relationship between each. The present study aims to further understand the genesis of the Maw Zone and its relationship with URU deposits through detailed petrography, U-Pb isotopic dating of xenotime, O isotopic analyses of tourmaline and coexisting quartz, and microthermometry, Raman … Lire la suite
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2016 — Human Inspired Robot Walking Pattern PlanningRésumé
Development of full size humanoid robots can be simplified along with the bipedal walking formulation methods. These robots consist of rigid bodies connected with actuated joints supposed to mimic human like walking. Although many researchers have tackled the problem of bipedal dynamic walking, it is far from matching human skills. This particular problem is of the special interest and the main subject of this research. Biped robot walking is a periodic path of an unstable phase, called Single Support Phase, following a stable phase, Double Support Phase. A periodic approach providing a scalable gait with characteristic parameters such as gait … Lire la suite
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2016 — A Novel Approach for Simulating Soil and Pipe Response to Seasonal, Environmental and Field ConditionsRésumé
Climate change related problems are increasing in occurence and severity leading to significant econocmic losses in many places of the world. In semi-arid environments, like Saskatchewan, the main phenomenon involved in pipe breakages is the volume change behavior of unsaturated clay deposits. Underground pipelines are typically buried within the upper zone of soil deposits, and therefore, are highly affected by soil nature and the different environmental conditions present on the ground surface. To accurately model field conditions, a mathematical formulation of native soil conditions was developed based on a bimodal soil water characteristic curve (SWCC) and other constitutive relationships. In … Lire la suite
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2016 — Inventory Policy Optimization of a Three-Echelon Supply Chain: A Meta-Modeling ApproachRésumé
The competitive and dynamic nature of today’s marketplace as well as continuing trend in global outsourcing is promoting complex supply chains with high inventory cost. A major challenge in finding the optimum inventory policy in such systems is that determining the mathematical relationship between the total inventory cost (TIC) and decision variables such as order point and order quantity suffers from great mathematical complexity. In this study, optimization of a three-echelon inventory system using meta-modeling approach is considered. Accordingly, TIC values for different sets of decision variables are estimated using experimental design and simulation. Next, in order to overcome the … Lire la suite
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2016 — A Social Media Spam Detection Ensemble Methodology Utilizing Multiple Reputation ApproachesRésumé
Over the past number of years, social media has become increasingly popular. This increased popularity has made social media a target for spammers. In addition to email systems, spammers have also turned their attention towards social media message systems and spam has become an increasing problem. Spam clutters user message feeds and can also affect the outcome of social media analysis systems. Traditional approaches to spam detection for individual social media messages is less effective due to message context, character limits, special characters and the like. This thesis proposes alternative methodologies for identifying and removing spam from social media systems. … Lire la suite
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2016 — Prince Albert's Crime/Risk Reduction Approach to Community SafetyRésumé
Faced with escalating crime rates and increasing demands for services the Prince Albert Police Service led a mobilization effort to implement a crime/risk reduction strategy called Community Mobilization Prince Albert (CMPA). The study examines the evolution of crime prevention practices from police-based efforts that relied on focused enforcement practices to the current risk reduction model. This research examines the outcomes of crime prevention efforts and their results on reducing crime and social disorder after the implementation of the CMPA in 2011. In terms of methodology, two strategies were used. First, a pre-and post-implementation strategy was used to examine whether changes … Lire la suite
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2016 — Petrographic, Fluid Inclusion, and Illite Geothermometry Analysis of the Rumpel Lake Drill Core, Athabasca Basin, Northern Saskatchewan, CanadaRésumé
The Athabasca Basin in northern Saskatchewan contains some of the world’s highest-grade unconformity-related uranium deposits, the genesis of which has been extensively explored in the literature. Constraints on the temperature, pressure, and composition of diagenetic fluids within the Athabasca Basin have mainly come from research conducted in uranium-mineralised areas, however, research conducted distally from known uranium mineralisation is relatively scarce. This study aims to provide a detailed data set on the temperature, pressure, and composition of diagenetic fluids using petrographic, fluid inclusion, and illite geothermometric methods on samples from the Rumpel Lake drill core, and to compare the results with … Lire la suite
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2016 — Exploring the core phenomena of positive discipline in everyday parenting programsRésumé
This qualitative study explored the lived experience of 9 parents, 8 of whom indicated that they were newcomers to Canada. All 9 participated in Positive Discipline in Everyday Parenting (PDEP), a parenting program based on the rights of the child, to determine what it is in the program that reduces their approval of child physical punishment. In a Canadian study on PDEP, it was found that 95% of 321 parents indicated a reduction in the approval of child physical punishment, and more than 80% believed that they would use physical punishment less often (Durrant, et al., 2014). The current study … Lire la suite
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2016 — Teacher Engagement in National Partisan Politics: A Bangladesh Case StudyRésumé
The purpose of this study was to explore the ways teacher engagement in national partisan politics in two Bangladeshi higher educational institutions influenced the teaching of four university teachers, the learning of students, as well as the two educational institutions for which they worked. The study also examined the teachers' perceptions of the benefits and challenges arising from their engagement in partisan politics. Two bodies of literature were reviewed for the study. They related to the perspectives on teaching in adult and higher education as well as perspectives on teacher engagement in partisan politics, including the implications for teaching and … Lire la suite
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2016 — A New Steam Assisted Gravity Drainage Process Utilizing Vertical WellsRésumé
A novel process utilizing vertical wells to enhance heavy oil recovery during steam assisted gravity drainage has been developed. In the vertical well steam assisted gravity drainage (VWSAGD) process, the vertical well includes two production strings which are separated by three packers (one dual and two single packers): the short injection string (SIS) is attached to the bottom of the annulus and completed in the top quarter of the perforated formation, while the long production string (LPS) is attached to the bottom of the production tubing and completed in the bottom quarter of the perforated formation. The new process (VWSAGD) … Lire la suite
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2016 — A Walk Test Simulator for Cellular Phone NetworksRésumé
Telecommunications is a technology that allows two distinct individuals/units to communicate effectively using voice and data signals. In the past two decades, telecommunications have grown into a comprehensive industry with billions of people using their services on a daily basis. With the increase in number of telecommunication companies, the competition to provide the best services at the lowest cost has become stiff. To attract more and more customers, telecommunications companies are spending millions of dollars to expand their networks and also to improve the quality of their service. In this thesis, work is focused on one aspect of telecommunications the … Lire la suite
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2016 — The Impact of Intolerance of Uncertainty and Social Threat on Decision-Making in Socially Anxious IndividualsRésumé
Social anxiety disorder (SAD) is characterized by intense fear or anxiety in response to social situations (APA, 2013). Individuals with SAD experience clinically significant distress and impairment and, if left untreated, the disorder typically follows a chronic and unremitting course (APA, 2013; Hofmann, Heinrichs, & Moscovitch, 2004). Intolerance of uncertainty (IU) is “an individual’s dispositional incapacity to endure the aversive response triggered by the perceived absence of salient, key, or sufficient information, and sustained by the associated perception of uncertainty” (Carleton, 2016, p.31). Several studies have implicated high IU as a potential risk factor underlying the development and maintenance of … Lire la suite
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2016 — Treatment Acceptability and Preference Among Primary Care Patients Experiencing Severe Health Anxiety: The Role of Internet-Delivered Cognitive Behaviour TherapyRésumé
Severe health anxiety is characterized by persistent and excessive anxiety about one’s health and is prevalent in primary care settings. While cognitive behaviour therapy (CBT) is an established treatment for health anxiety, barriers to service access limit the number of individuals who receive this treatment. Internet-delivered cognitive behaviour therapy (ICBT) has the potential to improve patient access to treatment and has been shown to be an effective intervention for health anxiety. Nevertheless, because ICBT is a novel treatment, it remains unclear whether the service would be perceived by primary care patients as acceptable. The goal of the present study was … Lire la suite
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2016 — Hope, Literature, and Romanticism: The Political Philosophy of Richard RortyRésumé
The purpose of this thesis is to explore the political philosophy of Richard Rorty, and to examine the three main pillars of his liberal thought: hope, romanticism, and literature. These concepts are central to Rorty’s political philosophy because they are necessary to create an ideal future. In the first chapter, I describe Rorty’s reconceptualization of the political spectrum. He proposes that we abandon the traditional, value neutral political spectrum and replace it with one that assigns value to political perspectives that produce hope in the future and encourage political participation. In the second chapter, I examine the philosophical and ideological … Lire la suite
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2016 — 'From House to Home': The Structure of a Soul Journey in Christina Rossetti's Devotional WritingRésumé
This thesis examines how Christina Rossetti uses a specific narrative structure I term the soul journey, to help her readers navigate the chaos of an ever-changing social and religious culture of Victorian England. Foundational to my analysis of her writing is the literary influence of Dante Alighieri, John Bunyan, and Alfred Lord Tennyson; specifically how their writing demonstrates the spiral structure of the soul journey. Also vital to this study is Rossetti’s devotion to Anglo-Catholic liturgical practices deriving from the Oxford Movement of the 1830s and 1840s in England. The leaders of the Oxford Movement, or Tractarians, sought reform of … Lire la suite
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2016 — New Multivariate Zero-Inflated Binomial Distribution with ApplicationRésumé
A new multivariate zero-in ated binomial distribution has the purpose of ana- lyzing the multivariate proportional data with excessive zeros. The distributional properties of the purposed model are discussed. The Newton Raphson, Fisher score and expectation maximization algorithm are developed for estimating parameters of interest. The score test and the likelihood ratio test are derived for assessing both zero-in ation and equality of multiple binomial probability parameters in propor- tional data. A simulation study is performed to compare the assessing power of both the score test and the likelihood ratio test. The application of the purposed model to white y … Lire la suite
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2016 — The Martial Arts Project: Exploring the Use of the Martial Arts as an Intervention for Young Offenders with Substance Influenced Violent OffencesRésumé
Youth-committed violent offences comprise a large percentage of overall violent offences in Canada that include violent non-fatal and fatal offences, costing its citizens 7.95 billion dollars annually. Many of these offences have also occurred while under the influence of a psychoactive drug. Youth crime in general has decreased nationally in the past ten years. However, youth crime rates continue to remain high in the provinces of Saskatchewan and Manitoba, doubling the national average. Traditional therapies, such as cognitive behavioral therapy and multi-systemic therapy, have been used to address substance use and violent behaviors in young offenders and have shown success. … Lire la suite
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2016 — Tradition and Discipline: The Evolution of the Caring Teacher Subjectivity in the Poiesis of the Saskatchewan Educational SystemRésumé
This thesis began as an exploration in to the nature of teacher subjectivity and the ‘truths’ that make up our individual reality. It is the interplay of knowledge/power in the social that generates the discourses that shape the nature of the subjectivities we chose to perform as teachers. These discourses also shape the ‘truths’ that shape our present. To achieve this I have chosen to focus on the school inspectors’ reports to the Ministry of Education during the first twenty years of the Saskatchewan education system. In my analysis of these documents I utilize a Foucauldian lens coupled with Butler’s … Lire la suite
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2016 — FaithApps.Net: A Method for Studying the Dispersal of Religious Smartphone ApplicationsRésumé
The goals of this thesis are to showcase the creation of a method for scraping and cataloging data on smartphone applications that were accumulated under a set criteria of individual religion search parameters. It is through the analysis of this data in tandem with establishing demographics for smartphone use that this thesis explores the relationship between religious community and space and internet communication technologies. To establish this connection this thesis begins by dedicating the first chapter to outlining current scholarship on religious space and community in context of the internet. By creating a baseline for researching religion in the digital … Lire la suite
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2016 — Species richness, heterogeneity and nitrogen contributions of roots along an arctic elevation gradientRésumé
Roots allow interactions between plants and their belowground environment. Such interactions are especially important in ecosystems where plant biomass is dominated by roots, such as the Arctic. In contrast, we are still lacking knowledge about roots and belowground processes in many ecological topics. These belowground processes are likely to be altered by climate change. Consequently, we need to know about basic root ecological patterns and processes before we can estimate possible effects of a changing environment on belowground processes and thus whole ecosystems. The aim of my thesis was to examine three of those basic root ecological patterns and processes: … Lire la suite
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2016 — Building the Fransaskois Identity through DramaRésumé
By exploring how drama contributes to building a Fransaskois identity, I attempt to situate Fransaskois literature within Saskatchewan’s literary landscape. Literary critics have to this day mostly excluded Fransaskois literature from the concept of Saskatchewan literature, and yet a close look at Fransaskois texts reveals an identity deeply anchored in Saskatchewan’s landscape, history, and language. I analyze four plays: Bonneau and Miss Bellehumeur by Raoul Granger, The Betrayal by Laurier Gareau, sTain by Madeleine Blais-Dahlem and Rearview by Gilles Poulin-Denis. I argue that these plays build the Fransaskois identity by exploring the relationships Fransaskois characters have with the other linguistic-cultural … Lire la suite
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2016 — The Systemic Nature of Personal Debt: A Critical Realist Approach to Analyses and SolutionsRésumé
Keywords: Personal debt, overindebtedness, financial system, financial literacy, critical realism, critical theory, structures, rational choice, financial regulation, social policy. Despite widespread concern, the causes and effects of the 2008 financial crisis have not been sufficiently addressed. Rising and problematic levels of personal debt remain a significant problem in Canada and across the globe. Efforts to re-regulate the economic system have been minimal, and the mainstream policy narrative tends to focus on financial literacy education strategies for individuals. These approaches stem from the tendency to understand the personal debt problem in highly oversimplified terms, rooted in hegemonic rational choice theory. This … Lire la suite
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2016 — Beliefs about the Healthfulness of Common FoodsRésumé
The primary focus of this research was to evaluate beliefs about the healthfulness of common foods. There is widespread agreement that a whole foods, plants-based diet, such as that depicted by Canada’s Food Guide, promotes optimal health. However, many processed foods are marketed with nutrition messages that are purportedly designed to assist people in making healthier food choices, but may in fact be misleading. This study evaluated beliefs about the healthfulness of 30 common foods across three categories, whole, processed, and highly processed foods, and compared them to an objective measurement of nutritiousness. An array of food choice items, including … Lire la suite
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2016 — A Study of Petrography, Fluid Inclusions and Graphite Alteration of the Phoenix Uranium Deposit, Athabasca Basin, Northern Saskatchewan, CanadaRésumé
The Phoenix unconformity-related uranium (URU) deposit, located in the southeastern Athabasca Basin, is associated with a NE-trending, moderately SE-dipping reverse fault crosscutting the unconformity between the Proterozoic Athabasca Group and the Archean – Paleoproterozoic basement. The mineralisation occurs mainly along the faulted graphite zones or at the intersection of the faults and unconformity and is associated with pervasively developed tourmaline alteration. Primary aqueous fluid inclusions were studied in post-diagenetic, pre- to syn-mineralisation quartz overgrowths and vug-filling drusy quartz in sandstone (QBSN2), and syn- to post-mineralisation, veinfilling coarse-grained drusy quartz in both sandstone (QBSN3) and basement (QBSM4). Only a few liquid-dominant … Lire la suite
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2016 — Development of multi-stage fractional programming methods for electric power system planning under uncertaintyRésumé
For electric power systems, although satisfying soaring power demand is critical for regions and countries, climate change mitigation by reducing carbon emissions is one of major challenges. Consequently, the primary obstacle for electric power system management is to tackle the trade-off between economic and environmental issues. Moreover, electric power systems exhibit a great number of complexities, associated with uncertainties and dynamics in system components, parameters and their interactions, such as future end-user demand, emission amounts and system violation. Therefore, efficient programming techniques are desired to deal with these uncertainties and complexities of the dual-objectives for maximizing economic profits and minimizing … Lire la suite
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2016 — On the Changes and Influences of the Absolute Truth of Neo-Confucianism in Pre-Modern ChinaRésumé
The following paper focuses on the changes and influences of the absolute truth of Neo-Confucianism in pre-modern China. First of all, Li of Neo-Confucianism attempted to replace the highest divine of Tian/Shangdi but actually became the amalgamation with the divine and the absolute truth. Through the resistance against Li by Chinese thinkers, the principles of Li were replaced by the idea of “public” as the highest truth of political ideology in the late pre-modern China. However, those thinkers did not break the “continuative mode of thought” which was the way of thinking of the absolute truth of Li, and “the … Lire la suite
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2016 — Formulations of Shadowed Sets and Three-Way Approximations of Fuzzy SetsRésumé
A three-way, three-valued, or three-region approximation of a fuzzy set is constructed from a pair of thresholds ( ; ) with 0 < 1 on its membership function. An element whose membership grade equals to or is greater than is put into the positive region, an element whose membership grade equals to or is less than is put into the negative region, and an element whose membership grade is between and is put into the boundary region. A fundamental issue in constructing such three-way approximations is the interpretation and determination of a pair of thresholds on the unit interval [0; 1]. … Lire la suite
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2016 — Development of Fractional Programming Methods for Environmental Management Under UncertaintyRésumé
Rapid economic development and population growth has accelerated environmental degradation and resource scarcity. There is growing recognition of the importance of environmental conservation and sustainable development. Sustainable environmental management may benefit from integrating a variety of factors into decision-making processes, such as economic, environmental, social, technical, legislative, and political considerations. Moreover, environmental systems are often involved in a multitude of uncertainties, which significantly intensifies the complexity of systems analysis. In this thesis, a set of fractional programming methods are developed to solve multiobjective environmental management problems under uncertainties. Factorial analysis is introduced to explore the interactions of uncertain system parameters … Lire la suite
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2016 — An Experimental Study of CO2 Dissolution into a Heavy Oil Without or With a Porous MediumRésumé
In this thesis, phase behaviours of three different solvents (i.e., CO2, CH4, and C3H8) in the Colony and McLaren heavy oils were experimentally studied. The diffusivities of CO2 in the Colony heavy oil without or with an unconsolidated porous medium at different initial pressures and a constant temperature were measured and compared. In addition, the temperature dependence of the CO2 diffusivity in the Colony heavy oil was noted. Three different theoretical diffusion models for determining the diffusivity of a solvent in a liquid phase were applied and analyzed. More specifically, first, two series of PVT tests of the Colony heavy … Lire la suite
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2016 — Effects of Interfaces and Interactions between Multiphase Flow and Solid on Engineering StructuresRésumé
Phenomena involving interactions between liquids and solids are widely observed in natural and industrial applications. Interactions between different phases of fluids and solid structures have great importance in engineering applications such as aircraft and submarine designs, multiphase liquid flow analyses, aerodynamics, vehicle dynamics and in the fields of aeronautic, civil and mechanical engineering. The research in this dissertation focuses on numerical investigations of the effects of liquid-solid interactions on structures found in engineering systems and the nonlinear dynamic behaviors involved. The effects of liquid sloshing on a container mounted on a carrier are studied from an equivalent mechanical model of … Lire la suite
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2016 — A Dynamic Stage-Based Fraud Monitoring Framework for Multiple Live AuctionsRésumé
In this thesis, a new approach to monitoring live auction frauds is proposed. Monitor- ing progressing auctions for fraudulent bidding activities is becoming crucial in order to detect and stop fraud on time, so fraudsters will not succeed. For this purpose, we introduce a generic stage-based framework to monitor multiple live auctions for In-Auction Fraud. Creating a stage-based runtime fraud monitoring service is sub- stantially di erent than the very limited studies that have been proposed on runtime fraud detection. More precisely, we launch the fraud monitoring operation at several time points in each running auction depending on its duration. … Lire la suite
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2016 — Yi Sang and Global ModernismRésumé
Yi Sang (1910-1937), born Kim Haegyŏng, wrote in Korea in the early part of the twentieth century under Japanese rule, composing in both Japanese and Korean. His work has been variously labelled as Modernist, Surrealist, and Dadaist. Despite the past fifty years of Yi scholarship acknowledging his stylistic and thematic affinities with Japanese modernists, Yi has typically been read as a specifically Korean, nationalistic figure who wrote experimental works in a spirit of anti-colonial resistance. These readings, however, are complicated by the fact that Yi’s works and life exhibit no sign of such political leanings. Moving away from these interpretations, … Lire la suite
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2016 — Ontology Driven Software Engineering GeneratorRésumé
This thesis presents the Ontology Driven Software Engineering (ODSE) generator for the creation of software based on a domain ontology and software ontology. These ontologies are built upon the established Inferential Modeling Technique (IMT) through the use of Protégé and the Web Ontology Language (OWL). The IMT technique enables the ontologies to distinguish the different parts of a complex system. The ODSE Domain ontology is designed to describe a problem domain, which in the case of this thesis, is a chemical plant. The software ontology is designed to describe a specific genre of software, which in the case of this … Lire la suite
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2016 — Trapped river otters (Lontra canadensis) from central Saskatchewan exhibit differences in total and organic mercury concentrations with sex and geographic locationRésumé
Human activities have resulted in increasing amounts of mercury Hg(II) in the atmosphere, oceans, and terrestrial systems. Biological processes convert inorganic forms of mercury released into the atmosphere into the neurotoxic and bioaccumulating methylmercury (MeHg) species resulting in increased concern for Hg emissions entering the biosphere. Once deposited from the atmosphere, in-situ methylation of inorganic Hg in sediments is believed to be the largest source of MeHg to freshwater aquatic systems compared to input from the terrestrial environment (i.e. run-off) or atmospheric deposition. Methylation of Hg is predominantly a microbial mediated process that is facilitated by some sulfate and iron … Lire la suite
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2016 — Oligotrophication of downwind boreal lakes caused by oil sands-derived enhanced nutrient depositionRésumé
Development of the Athabasca Oil Sands Region (AOSR) in northern Alberta, Canada has resulted in the substantial release of emissions, such as reactive nitrogen (Nr) species and base cations, which can fertilize downwind lakes in the boreal forest of Saskatchewan. However, to address the potential impacts of nutrient deposition on these algal communities, interpretations must occur in the context of ongoing regional climate change. Here, I use a factorial paleolimnological analysis to isolate the unique effects of AOSR emissions and climate change on lake geochemistry (C and N stable isotopes and elemental content) and algal assemblages (fossil pigments) over the … Lire la suite
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2016 — Structural study of the auriferous Santoy shear zone, northeastern Glennie domain, SaskatchewanRésumé
The study area lies within the Pine Lake Greenstone belt of the Glennie domain, 125 km northeast of LaRonge, SK. The Santoy shear zone hosts the Santoy 7, Santoy 8/8 East, and “Santoy Gap” gold deposits. This shear zone was studied using a structural and geochronological (ID-TIMS) approach in order to decipher its complex relationship with plutonism, deformation, alteration, and gold mineralization. Surface and subsurface mapping reveals that the Santoy shear zone, and deposits therein, show a clear structural relationship with the Carruthers Lake synform. The Santoy 7, Santoy “Gap”, and Santoy 8 deposits lie along the western limb of … Lire la suite
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2016 — Nonlinear Behaviors Analysis and Nonlinear Characteristics Diagnosing of Mechanical Vibration SystemsRésumé
Comprehensive understanding and effective diagnosis of nonlinear behaviors are important in dynamical analyses of mechanical systems and may provide crucial guidance to the design and control of mechanical systems. In this research, the nonlinear behavior and stability of an elastic suspended cable under combined parametric and external excitations are studied first. Such cable is commonly used in suspended bridges. The governing equations of the cable with geometric nonlinearity are developed with considerations of the first in-plane and out-of-plane mode vibrations. The solutions of the nonlinear system are derived as per the perturbation method of higher accuracy. The nonlinear stability of … Lire la suite
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2016 — Determination of Selected Pesticides and Degradation Product in Atomospheric Samples in the Okanagan Valley by Gas Chromatography-Mass SpectrometryRésumé
In this study an optimized gas chromatography negative chemical ionization mass spectrometry method was developed for analyses of target pesticides including chlorpyrifos, diazinon, endosulfan (α- and β isomers), gamma-hexachlorocyclohexane, malathion, pentachloronitrobenzene and endosulfan’s degradation product endosulfan sulfate. Chromatography was performed on a DB-5 MS + DG column with helium as mobile phase. Method detection limits ranged from 1.0 to 4.0 pg/μL for the target pesticides. This study provided the first detection of all the selected pesticides in atmospheric samples collected at Osoyoos, British Columbia. Of the organochlorines, the highest atmospheric concentrations in 2011 and 2012 were observed for α-endosulfan. The … Lire la suite
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2016 — Using Conflict and Support Counts for Variable and Value Ordering in CSPsRésumé
A Constraint Satisfaction Problem (CSP) is a very powerful framework for representing and solving constraint problems. Many real world computational problems in Artificial Intelligence and other areas of computer science can be formulated as CSPs. Problems such as scheduling and timetabling in operations research, map-coloring problem and Boolean satisfiability are some of the examples that can be represented and solved with a CSP framework. Solving a CSP is about searching for a solution in a huge search space. Very often, much search efforts are wasted on the part of the search space that does not lead to a solution. Therefore … Lire la suite