Browsing Theses by Title
Now showing items 11368-11387 of 15552
-
A preliminary investigation into the ecological significance of headwater drainage features in Southern Ontario
(University of Waterloo, 2010-05-21)Within Southern Ontario urban development is rapidly devouring headwater systems, and this can have significant repercussions to the health of entire river networks. The ecological contributions of headwaters to downstream ... -
Preliminary validation of a single self-report question as a screening tool for depression in older adult populations: Analyses using the Minimum Data Set Depression Rating Scale
(University of Waterloo, 2008-09-24)Objectives: The primary objective of this research was to inform the criterion validity of the single self-report depression screening question in the interRAI-Contact Assessment (CA) against the validated Depression Rating ... -
PRELOADING : A Transformative Approach to Flood Preparation and Relief
(University of Waterloo, 2019-01-23)For islands and coastal cities, the body of water that nourishes the land can easily become a leading source of threat. Natural disasters are mostly unpredictable and often have devastating impact on life and property. ... -
Premotor and prefrontal contributions to modulating upper limb somatosensory input into non-primary motor areas
(University of Waterloo, 2015-05-15)Upper limb motor control requires the use and integration of afferent somatosensory input from peripheral receptors to help plan and prepare movements. Cortical surface electroencephalography can be used to measure the ... -
Preparation and Characterization of Polymer TiO<sub>2</sub> Nanocomposites via <em>In-situ</em> Polymerization
(University of Waterloo, 2006)Polymer nanocomposites are already a part of many important of worldwide businesses: automotive (molded part in cars), electronics and electrical engineering, household products, packaging industry, aircraft interiors, ... -
Preparation and Characterization of Temperature-Responsive Polymeric Surfactants
(University of Waterloo, 2014-01-28)Canada has large reserves of heavy oil stored in the form of oil sands in the Athabasca region. This type of heavy oil does not flow at room temperature and its agglomeration with sand complicates its extraction. Consequently, ... -
Preparation of a Multi-Part Varkud Satellite Ribozyme Variant for Kinetics Studies
(University of Waterloo, 2009-09-22)The Varkud Satellite (VS) ribozyme is the largest of the “small” nucleolytic ribozymes and is the only one for which there are no high resolution crystal structures available. The VS ribozyme comprises a catalytic domain ... -
Preparation of Copolymers of Acrylic Acid and Acrylamide for Copper (II) Capture from Aqueous Solutions
(University of Waterloo, 2009-10-27)Cross-linked copolymers of acrylic acid (sodium acrylate) and acrylamide were synthesized by free radical polymerization. The copolymer hydrogel was studied for capture of copper ion from aqueous solution. Effects of ... -
Preparation of Functional Polymer Nanoparticles Using Semibatch Microemulsion Polymerization
(University of Waterloo, 2012-05-18)The present project is related to two aspects of research (i) to develop a new technique to synthesize fine nano-size polymer particles with unique and controllable properties; (ii) to synthesize novel functional polymer ... -
Preparation of Ruthenium and Iridium Pincer-Type Pyridylidenes
(University of Waterloo, 2009-08-31)A new POCOP pincer-type ligand was synthesized and characterized. This new ligand gave rise to the first POCOP pyridylidene pincer-type ruthenium and iridium complexes. Investigations into structural and electronic parameters ... -
Preparation of Thermoplastic Vulcanizates from Devulcanized Rubber and Polypropylene
(University of Waterloo, 2013-04-22)One of the current problems faced by mankind is the problem of safe disposal of waste rubber. Statistics show that the number of waste tires is continuously increasing at a very rapid rate. Since rubber materials do not ... -
Preparation, Characterization and Performance of Poly(vinyl alcohol) based Membranes for Pervaporation Dehydration of Alcohols
(University of Waterloo, 2008-09-24)Pervaporation (PV), a non-porous membrane separation process, is gaining considerable attention for solvent separation in a variety of industries ranging from chemical to food and pharmaceutical to petrochemicals. The most ... -
Preparation, characterization, and evaluation of Mg-Al mixed oxide supported nickel catalysts for the steam reforming of ethanol
(University of Waterloo, 2008-01-22)The conversion of ethanol to hydrogen or syngas can be achieved by reacting ethanol with water via steam reforming, CH3CH2OH + (1-x)H2O = (4-x)H2 + (2-x)CO + xCO2 (R.1) CH3CH2OH + H2O = 4H2 + 2CO (R.2) CO + H2O = ... -
Preparing and Tuning the Reactivity of Palladium Carbenes and an Unusual Catalytic Isomerization of Diphenylcyclopropanes
(University of Waterloo, 2007-09-26)The preparation of palladium carbene intermediates from diphenylketene is proposed. Experiments to trap these intermediates with alkenes have been conducted and optimized, with cyclopropanes being prepared in up to 69% ... -
Preparing for the Eschaton: A Theology of Work
(University of Waterloo, 2010-10-27)Work occupies a significant part of our lives, and yet it is often not given sufficient attention. Certainly there is much consideration given to finding a career, and succeeding in work, but not enough to how our work ... -
Preparing Nanotubes via Polymerization of Diacetylene Functionality Containing Carbon-based Macrocycles
(University of Waterloo, 2013-09-05)Nanofibers and nanotubes have been extensively studied in materials science due to their extraordinary thermal conductivity, excellent mechanical and electrical properties, and their potential capability for gas storage. ... -
Prepositional Phrase Attachment Disambiguation Using WordNet
(University of Waterloo, 2006)In this thesis we use a knowledge-based approach to disambiguating prepositional phrase attachments in English sentences. This method was first introduced by S. M. Harabagiu. The Penn Treebank corpus is used as ... -
Preprocessing and Reduction for Semidefinite Programming via Facial Reduction: Theory and Practice
(University of Waterloo, 2013-11-26)Semidefinite programming is a powerful modeling tool for a wide range of optimization and feasibility problems. Its prevalent use in practice relies on the fact that a (nearly) optimal solution of a semidefinite program ... -
Preschoolers’ reasoning about the “how”, “what” and “when” of ownership.
(University of Waterloo, 2016-03-30)My dissertation includes three papers. Paper one investigates preschoolers’ appreciation of how people become owners. In two experiments, 70 3-to-5-year-olds were asked to explain why a character owns, likes, or uses certain ... -
Prescriptive Semantics For Big-Step Modelling Languages
(University of Waterloo, 2011-02-22)With the popularity of model-driven methodologies and the abundance of modelling languages, a major question for a modeller is: Which language is suitable for modelling a system under study? To answer this question, one ...