Browsing Theses by Title
Now showing items 7948-7967 of 15522
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Investigation of Head and Brain Response in Football Helmet Impacts using a Finite Element Model of the Head and Neck with Active Muscle
(University of Waterloo, 2019-06-20)Among high school and college athletes, ∼50% of American football players report a concussion each year, and at least 30% of players sustain more than one concussion per year, which may be reduced in part through improvements ... -
An Investigation of Heterogeneity and the Impact of Acidic Regions on Bulk Effluent from a Deconstructed Low Sulfide Waste-Rock Pile
(University of Waterloo, 2017-05-15)Waste rock is a potential source of low quality drainage resulting from oxidation of naturally occurring sulfide minerals. Sulfide oxidation may result in the generation of effluent with elevated concentrations of SO4 and ... -
Investigation of High Frequency Switching Transients on Wind Turbine Step Up Transformers
(University of Waterloo, 2015-09-28)Pre-mature failures of wind turbine step up (WTSU) transformers have been reported in the wind farms although, the failed transformers had previously passed all quality assurance tests and had assembled all standard ... -
An Investigation of Human Annotators' AI Teammate Selection and Compliance Behaviours
(University of Waterloo, 2024-01-18)Human-artificial intelligence (AI) collaborative annotation has gained increasing prominence as a result of its enormous potential to complement human and AI strengths as well as AI's recent development. However, it is not ... -
Investigation of Immature Cu,Zn Superoxide Dismutase 1 Using Variable Temperature NMR
(University of Waterloo, 2020-09-03)Amyotrophic lateral sclerosis (ALS) is an adult onset neurodegenerative disease that results in the death of motor neurons in the spinal cord, cortex, and brain stem. The vast majority of ALS cases arise sporadically, but ... -
An investigation of interocular suppression with a global motion task
(University of Waterloo, 2012-10-31)Abstract Purpose: Interocular inhibitory interactions appear to underlie the establishment of ocular dominance. The inhibitory effect leads to suppression of the non dominant eye in certain conditions. While these ... -
Investigation of intra-annual glacier velocity and seasonality of White and Thompson Glaciers, Axel Heiberg Island, Nunavut
(University of Waterloo, 2023-01-03)The Canadian Arctic Archipelago (CAA) is undergoing rapid atmospheric warming at rates that are twice that of the global average and are greater than any other time in the past four millennia. Consequently, changes in ... -
The Investigation of Isomers using Differential Mobility Spectrometry and Ultraviolet Photodissociation Spectroscopy
(University of Waterloo, 2022-10-26)The analysis of complex mixtures in mass spectrometry (MS) is often complicated by the presence of isomers exhibiting the same mass-to-charge ratios. Tandem MS can simplify isomer analysis and enable ion characterization ... -
Investigation of Kinetics of Nitroxide Mediated Radical Polymerization of Styrene with a Unimolecular Initiator
(University of Waterloo, 2009-04-24)This thesis presents the results of a study on the kinetics of nitroxide-mediated radical polymerization of styrene with a unimolecular initiator. The primary objective was to obtain a more comprehensive understanding of ... -
Investigation of Liquid Metal Embrittlement in Advanced High Strength Steels
(University of Waterloo, 2020-04-17)Third-generation advanced high strength steels (AHSS) are typically given a zinc coating that provides excellent resistance to corrosion. During the resistance spot welding (RSW) process, the melted zinc coating enables ... -
Investigation of Liquid-Metal-Embrittlement Crack-path: Role of Grain Boundaries and Responsible Mechanism
(University of Waterloo, 2020-07-24)Liquid metal embrittlement (LME) has been reported in many structural materials, including steel, aluminum, nickel during hot working processes e.g. welding, brazing, heattreatment, leading to abrupt failure. In many of ... -
The Investigation of Long-term Cognitive Changes after Mild Traumatic Brain Injury using Novel and Sensitive Measures
(University of Waterloo, 2012-08-24)Memory and concentration problems are frequently reported long after experiencing a mild traumatic brain injury (mild TBI), though conflict with null findings of deficits on standard neuropsychological tests. Experimental ... -
An investigation of low energy quasiparticle excitations via thermal conductivity measurements
(University of Waterloo, 2012-10-26)Thermal conductivity measurements are made on a variety of systems in order to probe low energy quasiparticle excitations. In particular, thermal conductivity measurements were made on the iron based superconducting ... -
An investigation of low energy quasiparticle excitations via thermal transport measurements
(University of Waterloo, 2017-06-16)Thermal transport measurements can provide a unique perspective of the nature of a system by exploring the behaviour of the low energy excitations from the ground state. Delocalized quasiparticle excitations can affect ... -
An Investigation of Manganese Macro segregation in Cast Dual Phase Steels using Micro X-ray Fluorescence Spectroscopy
(University of Waterloo, 2017-10-18)Advanced High Strength Steels with a high manganese content offer an exceptional balance of strength and ductility. However, the occurrence of segregation in these steels, particularly at the centerline, leads to quality ... -
An Investigation of Methods for Missing Data in Hierarchical Models for Discrete Data
(University of Waterloo, 2011-03-09)Hierarchical models are applicable to modeling data from complex surveys or longitudinal data when a clustered or multistage sample design is employed. The focus of this thesis is to investigate inference for discrete ... -
An Investigation of Methods to Attenuate Soft Tissue Artifact of the Thigh in High Knee Flexion
(University of Waterloo, 2020-08-26)Soft tissue artifact during optical motion capture, or the movement of skin markers relative to bone, is widely accepted as a significant source of error in estimations of angles and moments. In some cases, the error ... -
Investigation of Microbial Electrochemical Cell (MEC) as a Sustainable Alternative for Synthesizing Hydrogen Peroxide (H2O2)
(University of Waterloo, 2015-01-28)Hydrogen peroxide (H2O2) is an environmentally-safe strong oxidant that has many practical applications. While H2O2 is capable of oxidizing a variety of contaminants, its end products are only H2O and O2. As a result, ... -
Investigation of Microbial Fuel Cell Performance and Microbial Community Dynamics During Acclimation and Carbon Source Pulse Tests
(University of Waterloo, 2007-10-24)Microbial fuel cells were designed and operated using waste activated sludge as a substrate and as a source of microorganisms for the anodic chamber. Waste activated sludge provided a bacterial consortium predisposed to ... -
Investigation of Milk and Alternatives Intake and the Impact of School Nutrition Programs in First Nations Schoolchildren
(University of Waterloo, 2010-08-31)Objectives: To assess the intake of milk and alternatives, calcium, and vitamin D in on-reserve First Nations youth in Ontario, Canada; and the relationship of these nutrients to body mass index. To assess the impact of ...