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Multi-Objective Optimization of the Steam Alternating Solvent (SAS) Process using Pareto-based Multi-Objective Evolutionary Algorithms
DownloadSpring 2022
The Steam Alternating Solvent (SAS) process is a relatively new auspicious alternative recovery process to produce heavy oil and bitumen resources. This process consists of injecting steam and solvent (i.e. propane) alternatively using the same well configuration as the widely adopted...
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Ecosystem sensitivity to variation in precipitation and defoliation across grasslands of Alberta
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Climate models project a greater likelihood of increases in precipitation variability and droughts over the Great Plains of North America. Drought’s interactions with other co-occurring factors, such as grazing, can lead to substantial and long-lasting changes to ecosystem goods and services. In...
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Spring 2022
Masonry, as a conventional construction material, is widely used due to its durability, strength, hygrothermal performance, and aesthetics. However, the behaviour of masonry structures is not fully comprehended, especially in the face of uncertainty. This lack of understating on the behaviour...
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Lithofacies Characteristics, Reservoir Properties, and Ichnology of the Upper Montney Member (Spathian)
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The Lower Triassic Montney Formation in west-central Alberta and northeastern British Columbia has become one of the most productive reservoirs in Western Canada over the past 15 years. It is projected that it will play a leading role in satisfying Canada’s energy requirements over the next 20...
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Spring 2022
Human space travel in the United States was the culmination of years of research, immense technological progress, and enormous collaborative projects, particularly in the 1950s and 1960s. It was also, as this thesis argues, a product of imagination—that is to say, a consequence of space travel’s...
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Spring 2022
The research in this dissertation draws on theories from psychology to address the issue of obedience as it relates to medical error and patient harm in healthcare settings by developing a model of obedience, analyzing the environment of application through survey research, and testing obedience...
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Differential signature of the microbiome and neutrophils in the oral cavity of HIV-infected individuals
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HIV infection is associated with a wide range of changes in microbial communities and immune cell components of the oral cavity. The purpose of this study was to evaluate the oral microbiome in relationship to oral neutrophils in HIV-infected compared to healthy individuals. We evaluated oral...
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Spring 2022
It is common in linguistic analysis to treat words as strings of speech segments that are believed to be transduced from the speech signal. However, there are notable shortcomings with this approach, especially concerning word comparison. Principally, comparing speech segment strings does not...
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Spring 2022
Policy gradient (PG) estimators are ineffective in dealing with softmax policies that are sub-optimally saturated, which refers to the situation when the policy concentrates its probability mass on sub-optimal actions. Sub-optimal policy saturation may arise from a bad policy initialization or a...
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Spring 2022
Fracture healing involves a fragile continuum from inflammation to repair and finally ends in bone reestablishment. Fractures that fail to heal progress to a state of nonunion, causing sub-stantial morbidity for the individual. Nonunion is one of the most serious complications of frac-ture. In an...