Liste complète
La lecture de ces thèses nécessite une redirection vers le site du dépôt institutionnel.
-
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
-
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
-
2012 — Large Area MultiPixel Photon Counters on the Search for Exotic Hybrid Mesons at GlueXRésumé
The GlueX project aims to elucidate the confinement property of quantum chromodynamics. Silicon PhotoMultipliers (SiPMs) will be the readout for the GlueX Barrel Calorimeter (BCAL), a key subsystem of the detector designed for the GlueX project. The important and most desired characteristic of SiPMs is their immunity to magnetic fields, since the BCAL is placed immediately in a 2:2 T solenoid. Other advantages compared to conventional PMTs is that they operate using low bias voltage (< 100 V ), have higher photon detection efficiency, lower cost, and are more compact and robust. SiPMs offer much promise to revolutionize light detection … Lire la suite
-
2023 — Numerical and economical studies of light oil carbonate reservoir for enhanced oil recoveryRésumé
Reservoir simulation studies are essential in setting up the appropriate development plan to increase oil and gas field production because they aid corporations in making the greatest choices for their business's economics, and those studies can save the corporation money and time. Accordingly, a full field simulation study was conducted to determine the best IOR and EOR processes to develop a carbonate-light oil field in north Africa. OFM, PETREL, ECLIPSE100, and ECLIPSE300 (Compositional Simulator) were utilized to reach the overall objectives of the reservoir simulation study. At the same time, EXCEL Microsoft Office was used to carry out the study’s … Lire la suite
-
2020 — A Machine Learning Approach For Lung And Bronchus Cancer Survival PredictionRésumé
In 2019 National Cancer Institute (NCI) in the USA ranked lung and bronchus cancer as the second diagnosis of cancer types. It is important to mention that only a few studies have focused on lung and bronchus cancer patient’s survival time by using the SEER database via Machine Learning techniques. This Thesis intends to develop a Machine Learning Approach to classify survivability (dead or survived), and in addition to classification, aims to predict the remaining lifespan for the patients who predicted would die within five years. In the first step, nine Machine Learning techniques, including Logistic Regression, Support Vector Machine, … Lire la suite
-
2015 — Measuring Sustainability Performance of Supply Chain Management Practices Using Fuzzy InferenceRésumé
Supply Chain Management (SCM) is critical for manufacturing operations, to increase their efficiency, productivity and quality. The sustainability performance of a SCM practice involves measuring its impact with respect to the three dimensions of sustainability: economic, social and environmental. In this work, the sustainability performance of a SCM practice is measured using an Intelligent System (IS) technique with the aim of not only measuring the sustainability performance simultaneously with respect to the three dimensions; but also the capability to incorporate user’s experience and knowledge, as well as accommodate ambiguous or vague information. The introduced IS technique is a Fuzzy Inference … Lire la suite
-
2022 — Parameter variations in Hector SLAMRésumé
The technique of Simultaneous Localization and Mapping (SLAM) has been broadly studied and used in different mobile robot applications. SLAM algorithms can build maps of an unknown environment and at the same time estimate the robot position. There are several different SLAM algorithms, such as: Gmapping, Hector SLAM, and Tiny SLAM etc. Each of these SLAM algorithms can be used with mobile robots, which uses a laser-based sensor. This thesis presents a method of evaluating the impact of parameter variations on map degradation using SLAM. The mobile robot used in this work is connected to a laser sensor and the … Lire la suite
-
2015 — Institutional Betrayal in the Medical System: Development, Realiability, and Validity of a Self-Report QuestionnaireRésumé
Betrayal trauma, a type of psychological trauma that occurs when the people or institutions a person depends on for survival violate that person’s trust (Freyd, 2008), has been shown to further intensify the negative effects of trauma (Martin, Cromer, DePrince, & Freyd, 2013). A recent extension of this concept, which can cause additional psychological harm to victims, is institutional betrayal (IB), an institutional failure to respond supportively to a traumatic event (Smith & Freyd, 2013). The medical system is an important, but as of yet unstudied institution with regard to betrayal. The frequency of medical errors, ineffectiveness of their disclosure, … Lire la suite
-
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
-
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
-
2022 — Personalized and Communication Cost Reduction Models in Federated LearningRésumé
Artificial Intelligence (AI) has widespread applications, including adding personalization to the customer experience, or lifestyle recommendations that sometimes raise concern regarding data privacy; especially in medical applications. Federated learning is used to solve this problem of user privacy. Most of the federated models are implemented by connecting billions of edge devices for privacy-preserved, on-device training. However, edge devices have limited network resources, which causes hindrance to effective communication of the machine learning models. Researchers have used several techniques like quantization and asynchronous updates to reduce the communication costs, but these techniques cause an improvement of just 10-15%. Furthermore, most of … Lire la suite
-
2014 — Unified Approach to Partially Linear Model and Cox Proportional Hazards Model with Missing CovariatesRésumé
In regression analysis the problem of missing covariate data is common in various fields of application. Many methods have been developed to deal with this problem in the past three decades. These methods are workable under most missing data scenarios. However, when missing covariate data appear in a general missing data pattern, many methods become too complicated in computation. In this thesis, we extend the unified approach of Chen and Chen (2000) and Zhao et al. (2013) to deal with partially linear model (Engle et al., 1986) and Cox proportional hazards model (Cox, 1972) with missing covariates. The unified approach … Lire la suite
-
2024 — Integrating stewardship and resource recovery: A dual-faceted analysis of e-waste and used oil management practices of Canadian provincesRésumé
Canada faces significant challenges in waste management, driven by high per capita waste generation. To address these issues, the country has implemented various waste management stewardship programs aimed at improving waste collection and resource recovery. This study examines the crucial role of stewardship in managing e-waste and used automotive resources including used oil, filters and containers. By focusing on stewardship practices, it highlights how effective management can improve collection rates, enhance resource recovery, and strengthen financial performance. The analysis emphasizes the importance of stewardship approaches to handling these special waste types, illustrating their potential to reduce environmental impact while optimizing … Lire la suite
-
2023 — Injury prevalence in open water swimmersRésumé
Open water swimming (OWS) is currently one of the fastest growing mass participation sports worldwide, and differs from pool swimming in that athletes swim in natural bodies of water such as lakes, oceans and rivers. Participation in this sport spans a wide range of individuals of all ages with a roughly equal sex distribution. No prior investigations have evaluated the musculoskeletal (MSK) injuries characteristic to the sport in a recreational capacity, and only one group has completed biannual surveillance in an elite population on three occasions. The purpose of the current study was to investigate the prevalence and explore possible … Lire la suite
-
2020 — Osteoporosis Health Beliefs and Knowledge Among Female Southeast Asian ImmigrantsRésumé
Osteoporosis is a common chronic disease amongst older adults in high-income countries such as Canada. Women are four times more likely than men to be diagnosed with osteoporosis (Alswat, 2017). Although populations in many high-income countries have become increasingly diverse with waves of immigrants, there has been limited research involving these new arrivals to Canada. There are studies that show that using the Health Belief Model (HBM) is effective for developing osteoporosis prevention programs. The objective of this study is to examine osteoporosis health beliefs and knowledge among female Southeast Asian immigrants living in Regina, Saskatchewan. Using a phenomenological approach, … Lire la suite
-
2021 — Global VillageRésumé
“Global Village” is an MFA research documentary film exploring the cultural adaptation and cultural identity of female newcomers in the province of Saskatchewan. This project was shot with an iPhone, conceptualized based on social media narrative styles, and released on digital platforms. In this project, stories about minority groups are explored. This documentary tells the story of Gizem (Turkey), Sisi (China), and Karla (Dominican Republic) immigrants to Canada. The common theme found within the social actors is the importance of traditional family values. This critical engagement paper will explain the creative process and methodologies used to produce the documentary film, … Lire la suite
-
2024 — All that is carriedRésumé
This paper supports my Master of Fine Arts thesis exhibition, All That Is Carried, presented at The Fifth Parallel Gallery from November 25 to December 7, 2024. All That Is Carried concerns ideas of home, longing, displacement, and memory. My intention is to convey feelings of disorientation and in-betweenness caused by leaving my family home, and home country. This exhibition addresses the complexity of my transitional state between homes. The installation consists of unstretched, shaped, and cut fabrics painted with images of interiors of my former home in Iran. The paintings draw from photographs I took of my former home. … Lire la suite
-
2018 — Intimate Partner Abuse and Older Women: Exploring the Connection Between Abuse, Ageing and HealthRésumé
Intimate Partner Abuse (IPA) has been shown to negatively affect health in ageing women (McGarry et al., 2010). As the population in Canada matures, understanding how IPA affects and intersects with health and ageing becomes important for women, our health care system and governments. This research explores perspectives of women over 65, who have experienced IPA in an earlier stage of their lives, and how this experience intersects and affects with their health and ageing. The experiences of ten women who have lived through IPA relationships are investigated using the qualitative method of grounded theory. The significance of this research … Lire la suite
-
2015 — Exploring the Relationship Between Negative Social Experiences and Social AnxietyRésumé
Social anxiety disorder (SAD) is a pattern of pronounced and enduring fear and anxiety about being scrutinized in social interactional, observational, or performance situations (American Psychiatric Association, 2013). Negative social experiences (i.e., social traumas) have been implicated in etiological models of SAD (Kimbrel, 2008; Ollendick & Hirshfeld-Becker, 2002; Rapee & Spence, 2004). Research evidence links peer victimization with adolescent SAD symptoms and suggests the type of victimization may differentially influence symptom presentation (e.g., Storch, Brassard, & Masia-Warner, 2003; Storch & Masia-Warner, 2004). Preliminary evidence suggests that severity of reaction to social trauma may also influence the presentation of SAD symptoms … Lire la suite
-
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
-
2013 — Mapping Predictive Ambient Concentration Distribution of Particulate Matter and Sulfur Dioxide for Air Quality Monitoring Using Remote SensingRésumé
Particulate matter (PM) and sulfur dioxide (SO2) are harmful to human health, especially at exposure levels of 30 μg/m3 of PM and 150 μg/m3 of SO2 for 24 hours. Agriculture and transportation are primary sources of PM while industries are the primary sources of SO2. A network of air quality monitoring stations was established to measure ambient PM and SO2 concentrations continuously but they are not enough to cover remote areas of Saskatchewan. To provide a cost-effective solution to this problem, principles of remote sensing for predicting ambient concentrations of air pollutants and mapping their distributions over the areas of … Lire la suite
-
2020 — Measures of Cardioautonomic Dysfunction as Markers of Sport Related ConcussionRésumé
The field of concussion research is vast but lacking in uniformity when implementing or recommending evaluative protocols. Of the pathological characteristics associated with concussion, autonomic dysfunction includes but is not limited to a dysregulation of autonomic afferent and efferent pathways in both cortical and medullary regions, resulting in impaired intrinsic autoregulatory function influencing inotropic and chronotropic aspects of myocardial contractility, as well as vascular smooth muscle regulation (1,2). Popular methods of assessing autonomic function in the wake of a concussion include heart rate variability (HRV) analysis, blood pressure variability analysis (BPV), and spontaneous baroreceptor sensitivity (SBRS). This project aims to … Lire la suite
-
2018 — Analysis of the Differentiation of Adult Neural Stem and Progenitor Cells Post Treatment with the ASH1 Transcription FactorRésumé
Adult neural stem and progenitor cells hold the potential to regenerate lost tissue following injury or disease to the central nervous system. Before these cells can be used to regenerate tissue, they must be instructed to differentiate into the appropriate cell type. The objectives of this thesis were to investigate the differentiation induced from the proneural transcription factor ASH1 with an intracellular delivery mechanism in adult neural stem and progenitor cells cultured in vitro and to develop an in-house biosensor capable of detecting the neurotransmitter glutamate from non-myelinated axons. It was demonstrated that the addition of the cell permeable ASH1 … Lire la suite
-
2018 — Palaeoenvironments and Palaeoclimates During The Late Holocene in Lake Siscunsi (Colombia), A Multiproxy PerspectiveRésumé
This thesis provides a palaeolimnological and environmental reconstruction of the last ~2,800 years of Lake Siscunsí, located in the Eastern Cordillera of Colombia. This study is mainly based on a high-resolution diatom record in combination with Chlorophyll 𝑎 and other analyses previously done in this lake, which include grain size, C/N, δ15N, δ13C, TOM, total carbonates and magnetic susceptibility. It consists of a review of the mid and late Holocene climates in Colombia, then it summarizes the most important findings in the palaeorecords of the three Colombian cordilleras and it briefly mentions the most significative periods of human effects. It … Lire la suite
-
2014 — Climate Change: Vulnerability and Adaptation, A Case Study of Men and Women Farmers in EritreaRésumé
This study is based on qualitative research conducted by the writer using semi-structured interviews with key informants, including elderly male and female farmers. An analysis based on a theoretical framework of vulnerability and coping mechanisms was also conducted on the lived experience of farmers in Berik, in the Central Highlands, and Barentu/Sosona, in the lowlands of Gash Barka, related to climate change, including some practical recommendations they made to help them in their daily struggles for food security. Eritrea is a sub-Saharan African country suffering from food insecurity due to climate change. Subsistence-level rain-fed mixed crops and livestock comprised 95% … Lire la suite
-
2020 — Properties of Pure Completely Positive Linear Maps of Operator SystemsRésumé
If Sn denotes the (2n + 1)-dimensional operator system spanned in the group C*-algebra C*(Fn) by the n generators of the free group Fn and their inverses, then the identity map in : Sn -> Sn is shown to be a pure completely positive map. Similarly, the identity map jn : NC(n) -> NC(n) on the noncommutative n-cube NC(n) in the group C_-algebra of the free product of n copies of Z2 is also shown to be pure. Further results on the purity of the reductions of the tensor product of pure completely positive maps are given. Some previously unrecorded … Lire la suite
-
2013 — On The Combinatorics of Sample Compression SchemesRésumé
A sample compression scheme of size k for a concept class C is a pair of functions (f; g) called the compression function and the reconstruction function. The functions have the property that for any sample S consistent with a concept in C, f compresses S to some subset of S, for which g returns a set of domain points, labelled consistently with the original sample S. The sample compression scheme is called labelled if the compression sets are labelled subsets of S and unlabelled if the compression sets are subsets of the instance set of S. M. Warmuth and … Lire la suite
-
2013 — Generation of Crack Random Numbers Using Three- Parameter Crack DistributionRésumé
The two-parameter crack lifetime distribution had led to the development of the three-parameter crack lifetime distribution. The developments has been a very use- ful and e ective tool in statistical analysis in conjunction with engineering concept relating to the fatigue crack which usually happen in the materials used for most engineering products like lorry, air craft and other heavy machineries. The crack is said to occur when excessive load or force is exerted beyond the materials ability or tendency. This three-parameter crack lifetime distribution was developed from the already-known two-parameter distributions, which was also used for modeling fatigue failure. This … Lire la suite
-
2021 — Corrosion Inhibition of Piperazine for Potash Solution Mining and Processing PlantsRésumé
Potash mining and processing plants are prone to severe corrosion due to their operating conditions and potash brine constituents. Such corrosion causes a high expenditure on maintenance and repair of plant equipment and pipelines. To mitigate the corrosion, this work proposed the use of a corrosion inhibitor, namely piperazine (PZ) that is low toxic and commercially available. A series of electrochemical and weight loss corrosion experiments were carried out to examine corrosiveness of carbon steel (CS1018), J55 steel and stainless steel (SS316L) as well as to evaluate inhibition performance of PZ in saturated potash brines under the test conditions of … Lire la suite