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UWSpace: Recent submissions
Now showing items 21-40 of 14418
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Join Cardinality Estimation Graphs: Analyzing Pessimistic and Optimistic Estimators Through a Common Lens
(University of Waterloo, 2020-08-07)Join cardinality estimation is a fundamental problem that is solved in the query optimizers of database management systems when generating efficient query plans. This problem arises both in systems that manage relational ... -
Methane Dynamics in a Southern Ontario Calcareous Fen
(University of Waterloo, 2020-08-07)Peatlands are important ecosystems that are pivotal for the global carbon budget. They have the ability to take carbon dioxide out of the atmosphere and store it within peat, which has very slow decomposition rates. Peatlands ... -
Semi-Automated Methods for Measuring Practice Conformance for Capital Projects
(University of Waterloo, 2020-08-06)The goal of this thesis is to explore semi-automated methods for measuring practice conformance for capital projects. Thorough measurement of practice conformance for capital projects typically requires manual audits. ... -
Design of Binocular Stereo Vision System Via CNN-based Stereo Matching Algorithm
(University of Waterloo, 2020-08-06)Stereo vision is one of the representative technologies in the 3D camera, using multiple cameras to perceive the depth information in the three-dimensional space. The binocular one has become the most widely applied method ... -
Evaluation of antimicrobial coatings in wet conditions and development of sulphonated poly (ether ether ketone) - copper composites for antimicrobial applications
(University of Waterloo, 2020-08-06)The existence of pathogenic bacteria and fungi on surfaces can be a serious threat to health causing numerous infections. With microorganisms developing antimicrobial resistance over the years, there is an increasing need ... -
Perceiving direct and averted gaze during emotion discrimination, affective empathy and affective theory of mind judgements: electrophysiological and behavioural effects
(University of Waterloo, 2020-08-05)Our observations about the eye-gaze of others inform how we interact with them. Perception of direct gaze has been shown to impact emotional and self-referential processing differently than perception of averted gaze, which ... -
Salinity Effects on Dissolved Organic Carbon Concentration and Quality in a Constructed Fen Peatland, Fort McMurray, AB
(University of Waterloo, 2020-08-05)In northern Alberta, oil sands mining disturbs the landscape; reclamation to an “equivalent land capability” is required, and industry is testing peatland construction as part of landscape reclamation. To determine if these ... -
Sulfur-based cathodes operated at strict cycling conditions for Li-based batteries
(University of Waterloo, 2020-08-05)With widespread investments from the transportation sectors, the electrification of a significant portion of the transportation market appears to be on the horizon. However, the range and price of these vehicles remains a ... -
Feature Identification
(University of Waterloo, 2020-08-04)We present several methods for identifying time periods of interest (features) in a wide range of data sets. The gamma method is a computationally inexpensive, flexible feature identification method which uses a comparison ... -
The Treatment of Accounting Changes in Covenants and Debt Contracting Efficiency
(University of Waterloo, 2020-08-04)Debt contracts contain accounting-based covenants that could be affected by changes in generally accepted accounting principles (GAAP). There are three types of contractual treatment of GAAP changes: excluding GAAP changes ... -
Contrasting Mind-Wandering, (Dark) Flow, and Affect During Slot Machine Play and an Auditory Vigilance Task: Implications for Gambling to Escape
(University of Waterloo, 2020-07-31)Slot machines are a pervasive form of gambling in North America. In Experiment 1 and 2, we assessed gamblers for mindfulness, gambling problems, depressive symptoms, and boredom proneness. In Experiment 1, participants ... -
Quantum Turing Machines and Quantum Prover-Verifier Interactions
(University of Waterloo, 2020-07-31)We present results on quantum Turing machines and on prover-verifier interactions. In our work on quantum Turing machines, we continue the line of research opened by Yao (1993), who proved that quantum Turing machines ... -
Metamotivational Beliefs about Intrinsic and Extrinsic Motivation
(University of Waterloo, 2020-07-30)Although intrinsic motivation is often viewed as preferable to more extrinsic forms of motivation, there is evidence that the adaptiveness of these motivational states depends on the nature of the task being completed ... -
Counting Pentagons in Triangle-free Binary Matroids
(University of Waterloo, 2020-07-30)A rank-n binary matroid is a spanning subset E of F₂ⁿ\{0}, a triangle is a set of three elements from E which sum to zero, and the density of a rank-n binary matroid is |E|/2ⁿ. We begin by giving a new exposition of a ... -
On the Effectiveness of Incremental Fact Extraction and Analysis
(University of Waterloo, 2020-07-30)Today's software projects can be huge. They often consist of millions of lines of code, have multiple teams working on them and are constantly evolving. It is no surprise then that developers sometimes seek the help of ... -
Development of a Novel Capillary Based pH Gradient Elution Moving Boundary Electrophoresis Method and Electrolysis Free Device for Protein Separation and Concentration
(University of Waterloo, 2020-07-30)Proteins are the raw material input required for a number of biomedical purposes. In order to keep pace with the exponential demand for protein consumption from research institutions and biopharmaceutical companies, new ... -
Recurrence in Algebraic Dynamics
(University of Waterloo, 2020-07-28)The Dynamical Mordell--Lang Conjecture states that if a polynomial orbit has infinite intersection with a closed set in an algebraic variety, then the intersection must occur periodically. Although this problem is unsolved ... -
Survivable Virtual Network Embedding in Transport Networks
(University of Waterloo, 2020-07-28)Network Virtualization (NV) is perceived as an enabling technology for the future Internet and the 5th Generation (5G) of mobile networks. It is becoming increasingly difficult to keep up with emerging applications’ Quality ... -
Iterative Edit-based Unsupervised Sentence Simplification
(University of Waterloo, 2020-07-28)We present a new iterative approach towards unsupervised edit-based sentence simplification. Our approach is guided by a scoring function to select simplified sentences generated after iteratively performing word and ... -
Examining the Role of DNM1L-Dependent Mitochondrial Fission and Mitophagy Receptors During Skeletal Muscle Differentiation
(University of Waterloo, 2020-07-27)Mitochondrial fission is necessary for the remodelling of existing mitochondria during skeletal muscle differentiation. When there is a need for muscle regeneration or repair, stem cell-like myoblasts exit the cell cycle, ...