Browsing Waterloo Research by Title
Now showing items 833-852 of 2435
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Examining the impact of timing of alcohol use initiation on changes to body weight and weight status among students in the COMPASS study
(Elsevier, 2019-12)Obesity rates among Canadian youth continue to be a concern, as weight issues during adolescence can transfer into adulthood, leading to long-term health problems. Current evidence lacks a consistent relationship between ... -
Executive functioning moderates associations between shyness and pragmatic abilities
(Wiley, 2020-09-26)While elevated shyness is associated with weaker pragmatic language abilities for some children, not all shy children demonstrate pragmatic challenges. Understanding the factors that may account for this variability is ... -
Exercise-Induced Fatigue and Caffeine Supplementation Affect Psychomotor Performance but Not Covert Visuo-Spatial Attention
(Public Library of Science, 2016-10-21)Fatigue resulting from strenuous exercise can impair cognition and oculomotor control. These impairments can be prevented by administering psychostimulants such as caffeine. This study used two experiments to explore the ... -
Existence and uniqueness of weak homotopy moment maps
(Elsevier, 2018-09-01)We show that the classical results on the existence and uniqueness of moment maps in symplectic geometry generalize directly to weak homotopy moment maps in multisymplectic geometry. In particular, we show that their ... -
An expanded shale δ98Mo record permits recurrent shallow marine oxygenation during the Neoarchean
(Elsevier, 2020-01-20)Multiple attempts have been made using the ancient shale record to track the molybdenum isotope composition (δ98Mo) of seawater during the final two-hundred million years of the Archean Eon (2.7 to 2.5 billion-years-ago, ... -
Expansion und Dynastische Politik in Pontos: Zwei neue Ären unter Pharnakes I.
(Steiner Verlag, Stuttgart, Germany, 2022-01-01)The most heated debates on early-Pontic history surround the treaty of alliance made between Pharnakes I and the citizens of Chersonesos in year 157 (IOSPE I2 402 = III3 103). About a half of the present generation of ... -
Expected utility of the drawdown-based regime-switching risk model with state-dependent termination
(Elsevier, 2018-03-01)In this paper, we model an entity’s surplus process X using the drawdown-based regime-switching (DBRS) dynamics proposed in Landriault et al. (2015a). We introduce the state-dependent termination time to the model, and ... -
Experiences of Food Insecurity Among Undergraduate Students: “You Can’t Starve Yourself Through School”
(Canadian Society for the Study of Higher Education, 2019-03)Canadian post-secondary students are vulnerable to food insecurity, yet lack of examination of this issue has prevented identification of policy and program solutions. This mixed-methods study aimed to characterize the ... -
Experimental and kinetic study of vacuum residue cracking over zirconium based catalysts
(Springer, 2022-04-01)In this study, thermal cracking and catalytic cracking over zirconium-based catalysts of the vacuum residue were achieved in the presence of supercritical steam at 400-450 degrees C, 20 bar, and 2-4 h. Two different catalysts ... -
An Experimental and Numerical Study on Tactile Neuroimaging: A Novel Minimally Invasive Technique for Intraoperative Brain Imaging
(Wiley, 2018-01-30)Background The success of tumor neurosurgery is highly dependent on the ability to accurately localize the operative target, which may be shifted during the operation. Performing an intraoperative brain imaging is crucial ... -
Experimental and simulated temperature variations in a LiFePO4-20Ah battery during discharge process
(Elsevier, 2016-10-15)The present study investigates the impact of various discharge rates on the thermal (temperature and heat generation profiles) and electrical performance of the Li-ion battery for electric vehicles and hybrid electric ... -
Experimental and theoretical investigations of heat generation rates for a water cooled LiFePO4 battery
(Elsevier, 2016-10-01)Understanding the rate of heat generation in a lithium-ion cell is critical for its safety and performance behavior. This paper presents in situ measurements of the heat generation rate for a prismatic Lithium-ion battery ... -
Experimental Evaluation of Indoor Navigation Devices
(Sage, 2016-12-20)Augmented reality (AR) interfaces for indoor navigation on handheld mobile devices seem to greatly enhance directional assistance and user engagement, but it is sometimes challenging for users to hold the device at specific ... -
Experimental fracture characterisation of an anisotropic magnesium alloy sheet in proportional and non-proportional loading conditions
(Elsevier, 2018-07)A comprehensive experimental investigation was performed to characterize the fracture behaviour of a rare-earth magnesium alloy sheet, ZEK100-O, under both proportional and non-proportional loading conditions. This material ... -
Experimental search for long-range forces in neutron scattering via a gravitational spectrometer
(American Physical Society, 2014-04-09)In this work we introduce a method of measuring low-energy scattering cross section with a gravitational spectrometer. In this method we add atoms (i.e., He) to the gravitational spectrometer filled with a target gas of ... -
Experimental Stress State-Dependent Void Nucleation Behaviour for Two 800 MPa Advanced High Strength Steels
(2018-04-26)The influence of microstructure and stress state, as defined by the stress triaxiality and Lode parameter, on micro-void nucleation was evaluated experimentally for two 800 MPa Advanced High Strength Steels (AHSS), one a ... -
Experimental study of flow through compressor Cascade
(Elsevier, 2017-09-01)The objective of this research work is to study the behaviour of flow at the inlet, within the blade passage and at the exit of a compressor cascade. For this purpose, a cascade with six numbers of aerofoil blades was ... -
An experimental study of hand washing in people with high and normative contamination fear
(Elsevier, 2021-01)Compulsions are the hall mark of obsessive-compulsive disorder (OCD) but there has been surprisingly little research on their phenomenology and persistence, and much of this work has focused on checking compulsions. The ... -
Experimental study on droplet generation in flow focusing devices considering a stratified flow with viscosity contrast
(Elsevier BV, 2017-05-18)High throughput analysis is highly demanded in a variety of chemical reactions. Droplet microfluidics offers unique advantages over traditional multi-well plate systems for high throughput analysis such as providing a ... -
Experimental Techniques for Finite Shear Strain Measurement within Two Advanced High Strength Steels
(2018-04-26)There is a growing need to experimentally characterize local shear deformation in advanced high strength steels (AHSS) for the calibration of stress-state dependent fracture criteria and to better understand sheared edge ...