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2005 — Proposal of an ethics-based framework for prioritization of scarce resources during an influenza pandemicAbstract
The goal of pandemic influenza planning is to minimize health and economic losses in the event of a future pandemic. One of the numerous challenges associated with this goal is the need to ration limited medical supplies such as vaccines and antivirals. This thesis seeks to formulate an ethical framework for priority access to these resources. Prioritization strategies must be consistent with the goal of pandemic planning and should reflect societal norms for equitable distribution. According to an ethics framework based on the principles of utility and equity, three groups were granted highest priority for influenza vaccine, namely health care … Read more
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2012 — Organic nitrogen use by different plant functional types in a boreal peatlandAbstract
Mineralization has long been thought to be the main driver in providing plant available nitrogen (N). However, slow mineralization rates of northern ecosystems cannot sustain total plant N accumulation and it is now recognized that plants can utilize organic forms of N. N is often a limited nutrient in ombrotrophic bogs and at Mer Bleue peatland nearly 80% of the N in the porewater is in the dissolved organic nitrogen (DON) form. This study determined whether peatland plants can take up organic forms of N and whether there are differences between plant functional types, which dominate bog vegetation. To determine … Read more
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2025 — Characterization of novel HOXB13 antibodies in the prostate cancer settingAbstract
Prostate cancer (PCa) is the second most common form of cancer in men. The main therapy to treat PCa is to remove testosterone from the blood via castration which is known as androgen deprivation therapy. Although initially effective, this treatment often causes the cancer to progress into castration-resistant PCa where the tumor growth becomes testosterone-insensitive. HOXB13, a homeodomain transcription factor required for normal prostate development in men, is shown to be hyperactive in PCa. Although its expression diminishes towards the later stages of PCa, its levels remain detectable. mTOR, a protein dysregulated in prostate cancer, has been shown to interact … Read more
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2017 — Short link N can induce regeneration of the early degenerative intervertebral discAbstract
Fackson Mwale (Internal/Supervisor) Read more
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2016 — Biocompatibility of diazonium adhesives for dental applicationsAbstract
Marino, Faleh Tamimi (Internal/Supervisor) Read more
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2014 — Mathematical modeling of mean flow stress (MFS) during hot strip rolling for HSLA steelsAbstract
A l'aide des résultats d'expériences qui utilisent la torsion à chaud, l'effet causé par «l'écart chronologique » est analysé (ex. le délai entre l'ébauchage et le finissage du schéma de laminage à chaud et le comportement de la contrainte d'écoulement moyenne des aciers à haute résistance mécanique). Deux types de déformation à chaud ont été étudiés : un schéma moyen au temps d'interpasse constante, dans lequel chaque passe est identique, dont la température diminue à un rythme régulier au cours du programme de laminage. Dans ce type de schéma, un intervalle de 5 et de 30 secondes sont utilisés afin … Read more
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2017 — Usability of three-dimensional virtual learning environments: an exploratory study of the think aloud approachAbstract
La thèse présente un projet exploratoire mené pour répondre à une question de recherche globale : le protocole de pensée à voix haute (PPVH) a-t-il un effet sur les diverses mesures d'utilisabilité recueillies dans le cadre d'une évaluation d'un environnement pédagogique virtuel à trois dimensions (EPV-3D)? Plus précisément, la recherche présente des hypothèses pour étudier l'effet du PPVH sur les mesures d'utilisabilité que sont l'efficacité, l'efficience, la satisfaction, la navigation, la sélection et la manipulation des objets et la présence.Un cadre conceptuel conçu par Markopoulos et Bekker (2003) pour comparer diverses approches d'évaluation de l'utilisabilité auprès des enfants a été … Read more
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2012 — A spurious-free switching buck converter for portable applicationsAbstract
Les convertisseurs Buck DC–DC sont indispensables afin de maximi le temps de veille ainsi que la durée de vie de la batterie des appareils électroniques portatifs. Dans un environnement portatif, selon le mode actif ou de veille de l'appareil, les conditions de charge varient fortement de niveau lourd vers le niveau léger de charge. Ce type d'appareil fonctionne la plupart du temps en mode veille. Dans un tel environnement, le spectre sortant de convertisseurs Buck DC–DC doit être sans parasite (c'est-à-dire avoir un contenu tonal faible), pour permettre d'alimenter les circuits sensibles comme les circuits intégrés dans les systèmes de … Read more
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2017 — Establishing a data registry for head and neck cancerAbstract
Nicholas Maroun Makhoul (Internal/Cosupervisor2) Read more
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2018 — Modeling intra-abdominal high grade serous ovarian cancer of human origin in nude miceAbstract
Contexte: Le cancer de l'ovaire est la maladie la plus mortelle de l'appareil reproducteur féminin. Au moment du diagnostic, dans la plupart des cas, la maladie a déjà progressé au-delà des ovaires, dans les structures pelviennes adjacentes et divers autres sites dans la cavité péritonéale. Le cancer ovarien séreux de haut grade (HGSOC) est le sous-type le plus commun, représentant près de 70% de tous les cas de cancer de l'ovaire. Avoir un modèle de souris HGSOC avec un phénotype de la maladie aussi proche qu'il se développe chez les humains, devrait permettre une meilleure évaluation des options thérapeutiques précliniques … Read more
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2015 — An in vivo study of a novel composite hyaluronic acid and gelatin hydrogel to improve healing of vocal fold scars in a rat modelAbstract
Mongeau, Luc (Internal/Supervisor) Read more
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2011 — Impact of the anti-diabetic drug metformin on tumor growth «in vivo»Abstract
La fréquence d'apparition du nombre de personnes atteintes d'obésité augmente rapidement dans les pays riches ainsi que dans plusieurs zones urbaines des pays en voie de développement. L'augmentation du nombre de certains cancers est associée à l'obésité dans plusieurs études épidémiologiques mais le mécanisme par lequel l'obésité induit ou favorise l'apparition des tumeurs demeure encore à élucider. L'insuline, les acides gras, l'augmentation de la biodisponibilité des hormones stéroïdes ainsi que l'inflammation sont considérés comme des déclencheurs potentiels. De meilleures connaissances sur les interrelations entre ces maladies pouvant conduire a de nouvelles découvertes sur la prévention et le traitement du cancer, … Read more
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2000 — Distributed multi-processing for high performance computingAbstract
Parallel computing can take many forms. From a user's perspective, it is important to consider the advantages and disadvantages of each methodology. The following project attempts to provide some perspective on the methods of parallel computing and indicate where the tradeoffs lie along the continuum. Problems that are parallelizable enable researchers to maximize the computing resources available for a problem, and thus push the limits of the problems that can be solved. Solving any particular problem in parallel will require some very important design decisions to be made. These decisions may dramatically affect portability, performance, and cost of implementing a … Read more
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2010 — "Thinking Through Others": The development of a culturally resonant international criminal jurisprudenceAbstract
Dans cette thèse, l'auteur affirme que par le processus de la contextualisation culturelle, les normes universelles du système pénal international sont interprétées et définies de façon telle qu'elles résonnent à travers des cultures. Les critiques du système pénal international affirment que le système ne répond pas adéquatement à la diversité culturelle des individus. Par un examen détaillé de la jurisprudence pénale internationale, l'auteur montre que la prise en considération du contexte culturel est devenue habituelle pour les tribunaux criminels internationaux. De plus, le Statut de Rome de la Cour Pénale Internationale contient des dispositions qui tiennent compte du contexte culturel … Read more
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2020 — Injection of rat mesenchymal stem cells leads to homing and differentiation in the liver in a blunt liver trauma modelAbstract
Ferri, Lorenzo Edwin (Supervisor2) Read more
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2018 — The role of human antigen R (HuR) in myofibroblast differentiation: implications for pulmonary fibrosisAbstract
Idiopathic pulmonary fibrosis (IPF) is an under-diagnosed lung disease characterized by progressive lung scarring with median survival of 3-5 years from initial diagnosis. Although the etiology of IPF is unclear, excessive extracellular matrix (ECM) deposition is a key event in disease pathogenesis. ECM -particularly collagen and fibronectin- is excessively deposited due to increased differentiation of fibroblasts into the α-SMA-expressing myofibroblasts by transforming growth factor (TGF) β1. We predict that TGFβ1 promotes fibrosis via human antigen R (HuR), an RNA binding protein whose principle function is to promote protein translation. HuR is localized in the nucleus under normal conditions, but upon … Read more
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2023 — Chinese aid and trust in local institutions in GhanaAbstract
Trust in political institutions is critical for both the functioning of democracies and the stability of political systems. This research uses a spatial difference-in-difference methodology to examine the impact of Chinese aid on political trust in local institutions and actors in Ghana. Drawing on the institutional approach to trust, this thesis argues that Chinese aid is associated with a decline in trust toward local institutions, primarily due to its association with a perceived decline in local government performance and an increase in perceived corruption. The analysis is based on geographically matched Chinese aid projects and Afrobarometer surveys conducted between 2008 … Read more
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2013 — Developmental changes in Arabic babbling in relation to English and French babblingAbstract
Infant vocalization undergoes dramatic changes during the transition from newborn cooing and infant babbling toward the production of meaningful speech. However, the processes underlying these changes are not fully understood, particularly at the age at which ambient language input begins to influence infant babbling. The aim of this study was to describe the babbling produced by Arabic infants―using acoustic and phonetic metrics―and then examine the effects of linguistic environmental input on babbling by comparing the babble produced by Arabic infants to that produced by English and French infants. Speech samples were collected from infants learning Arabic (N = 31; age: … Read more
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2008 — TCSIM: a top-down approach to mixed-signal circuits and systems designAbstract
Design methodologies have evolved over the years, especially due to shrinking transistors in CMOS technology. This has encouraged the use of behavioural modelling in Matlab and Simulink over other less accurate or time consuming options for design and simulation, hence the development of TCSIM (Top-down Circuit Simulation In Matlab). The following components are modelled for this initial prototype: the output voltage limitation of operational amplifiers (opamps), the current limitation and parasitic capacitances of operational transconductance amplifiers (OTAs), the finite and nonlinear variation of on resistance in switches, and the nonideal behaviour of switched capacitor (SC) integrators. This is complemented by … Read more
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2020 — Teaching and assessing cognitive competencies in plastic surgery-within the context of competency based medical educationAbstract
Vassiliou, Melina (Supervisor2) Read more
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2021 — Optimization-driven set-based design for dynamic design requirementsAbstract
La thèse présente de nouvelles méthodes de conception pour obtenir des ensembles de solutions de conception qui peuvent répondre aux exigences de conception qui peuvent changer au cours de la vie d'un système. Ces méthodes visent à aider les ingénieurs concepteurs sur le plan quantitatif afin qu'ils puissent prendre des décisions éclairées dans les premières phases du développement de produits lorsque l'incertitude est élevée.Les applications utilisées dans cette thèse démontrent l'efficacité de ces méthodes et sont centrées sur la refabrication de produits au moyen d'un dépôt d'énergie dirigé, une technique de fabrication additive. Plus précisément, ils visent à fournir des … Read more
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2024 — Assessing a New Grading System for Virtual Reality Pedicle Screw Placement– A Case Series StudyAbstract
AbstractIntroductionThoracolumbar pedicle screw placement is an essential surgical skill for spine surgery trainees to master. The TYSM Symgery simulator features a virtual reality platform for pedicle placement, which serves several purposes such as skill training and assessment. The use of virtual reality in spine surgery training and education has shown promising results, with the potential to improve trainees’ accuracy in pedicle screw placement. These technological advancements are contributing to the ongoing evolution of surgical training and assessment, offering new opportunities for skill development and patient safety.ObjectivesTo 1)assess the accuracy of pedicle screw placement using the Gertzbein and Robbins pedicle breach … Read more
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2026 — Development and characterization of plant based hypoallergenic protein extrudates fortified with ascorbic acid and encapsulated bilberry extractAbstract
Electrospinning is a versatile encapsulation technique that was successfully employed to entrap heat sensitive bilberry extract anthocyanins (BE). In the first part of this study, pea protein isolate (PPI) electrospun fiber mats were prepared after optimizing electrospinning parameters and solution properties. The pH adjustment to alkaline (pH 9) combined with heating facilitated electrospinning of globular pea protein, which is conventionally difficult to electrospun. Moreover, the incorporation of sodium alginate (NaAlg) and polyvinyl alcohol (PVA) enhanced the rheological behavior of the polymer solution by reducing both electrical conductivity and apparent viscosity to optimum levels. Consequently, the developed PPI-NaAlg/PVA fiber mats demonstrated … Read more
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2020 — Edible coating to extend the shelf life and enhance the quality of fresh and frozen cut fruitsAbstract
Les enrobages comestibles peuvent protéger les produits alimentaires de l'exposition à l'environnement et altérer favorablement les activités physiologiques en fournissant les barrières nécessaires contre la perte d'humidité et les échanges de gaz. Les fraises en général sont très périssables et en forme coupée, elles deviennent encore plus périssables en raison des tissus internes exposés et les dommages mécaniques induits. En réponse à la forte demande de fruits coupés prêts à manger, une formulation d'enrobage comestible à base d'alginate de sodium a été utilisée comme barrière protectrice pour prolonger la durée de conservation des fraises coupées, et améliorer leurs propriétés sensorielles. … Read more
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2021 — Art therapy program in the chronic phase of stroke: a feasibility pilot studyAbstract
Boudrias, Marie-Helene (Supervisor1) Read more
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2019 — Human sperm DNA damage: Impact of «in vitro» oxidative stress and «in vivo» vitamins on conventional and advanced sperm function parametersAbstract
Introduction: Reactive oxygen species (ROS) and oxidative stress (OS) play a major role in sperm DNA damage which may adversely affect fertilisation and embryo development. ROS induces sperm DNA damage and impairs sperm motility via multiple mechanisms (lipid peroxidation process, initiation of apoptosis, and DNA oxidation). Oral antioxidants may have a favorable effect in decreasing ROS and protecting the sperm against DNA damage. However, a physiologic balance between oxidation and reduction is vital for sperm function. Material & methods: For in vitro OS study, we performed a prospective study of 10 fertile donors at McGill University Health Center in Montreal. … Read more
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2023 — A Model for Competency-based Simulation Training in Cardiac Surgery Utilizing Dimensional FidelityAbstract
Lachapelle, Kevin J (Supervisor1) Read more
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2021 — Developing an ontology-based classification for mobility among individuals with acquired brain injuryAbstract
Acquired brain injury (ABI), including traumatic brain injury (TBI) and stroke, is a leading cause of disability in Canada. Over 60% of the 1.5 million Canadians with ABI that go through the care continuum annually report ongoing restrictions in mobility and participation in societal roles. Planning rehabilitation intervention requires an understanding of the nature and severity of mobility challenges among individuals with ABI through a comprehensive evaluation of mobility. Thus, this PhD work comprises four studies, all addressing the global objective “to provide a common language and taxonomy of mobility to help compare and select mobility measures for clinical care … Read more
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2023 — CSGraph2Vec: A Distributed Representation Learning Approach for Assembly FunctionsAbstract
Software reverse engineering is an essential yet time-consuming undertaking in the identification of malware, software vulnerabilities, and plagiarism, especially when access to the source code is limited. Due to the development of machine as well as deep learning, automating the construction of vector embeddings has grown more feasible. This research introduces CSGraph2Vec, a distributed and automated deep learning approach that produces representations of assembly functions. By leveraging the power of the Electra pre-trained language model, as well as message-passing neural networks, CSGraph2Vec efficiently incorporates control flow and semantic information from assembly code. Our model successfully learns significant features that distinguish … Read more
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2017 — Estimating the risk of non-communicable diseases based on behavioral risk factors and the social determinants of health: a case study of CanadaAbstract
La question des maladies non transmissibles (NCD) est un problème de santé sociale croissante. Le NCD a augmenté au fil du temps, conduisant à une augmentation du taux de morbidité et de mortalité dans les pays développés et les pays développés. Cette étude examine les facteurs de risque communs de maladies non transmissibles entre un pays développé, le Canada et un pays en développement, au Mexique. Plusieurs facteurs de risque sont connus pour influer sur la prévalence des maladies non transmissibles, y compris le mode de vie, les habitudes, les facteurs sociaux et socio-économiques. Cette étude se concentre spécifiquement sur … Read more
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2013 — Beneficial effects of microsurgical varicocelectomy on sperm DNA fragmentation, distribution of nuclear sulfhydryl groups and sperm maturation: a prospective trialAbstract
Contexte: Il y a la preuve(l'évidence) pour montrer que la réparation de varicocele peut améliorer des paramètres de sperme conventionnels et l'intégrité d'ADN de sperme dans des hommes infertiles avec varicocele clinique. Objectif: Examiner l'effet de varicocelectomy sur la qualité de sperme, spécifiquement, le sperme l'intégrité chromatin nucléaire, la distribution de groupes sulfhydryl nucléaires et la maturation de sperme. Schéma, environnement et participants : Nous avons éventuellement évalué une série consécutive d'hommes infertiles (n=29) présentant à la clinique Ovo avec un an ou plus d'histoire d'infertilité, varicocele cliniquement palpable et des paramètres de sperme anormaux. Six donneurs de sperme avec … Read more
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2005 — A survey of one-relator groups /Abstract
We review basic concepts of the algebraic theory of combinatorial group theory, and try to emphasize the important role of groups represented with a set of generators and one defining relation. Read more
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1999 — Developing countries and foreign direct investmentAbstract
Along with international trade, foreign direct investment (FDI) has been the engine driving the current economic globalization of the world economy. The growth rate of FDI, which exceeded that of international trade and world output throughout the 1990s, raises important questions regarding the value of FDI to developing countries as host countries to FDI and the role it can play in their development. In an attempt to answer these questions, this thesis tackles the main issues underlining FDI and developing countries. After analysing the pros and cons of FDI for developing countries and other interested parties, this thesis scrutinizes the … Read more
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1997 — The conflicting interests - the Warsaw system crisis /Abstract
Private international air law encompasses the delicate balance of interest between the air carriers and the consumers of their service. This balance is made by states according to their socioeconomic and political conditions. Since these conditions differ among states, another, yet more complex conflict of interests arises between states as to how the interest of air carriers and consumers should be balanced. This difference between states has been, and still is, the biggest obstacle in the way of unifying private international air law. Giving an overview of the present situation and the possible future implications, this thesis highlights the balance … Read more
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2006 — On the Common-Link Theory.Abstract
Dans sa théorie du common-link (lien commun), Joseph Schacht soutient que les compilateurs de hadith faisant autorité ont sciemment et délibérément propagé des traditions dont l'excellence des chaînes de transmission pouvait être mise en doute. Ce point de vue a subséquemment trouvé de nombreux adhérents parmi les orientalistes. G. H. A. Juynboll, Michael Cook et d'autres ont épousé les vues de Schacht et ont su en tirer d'autres applications. Dans la présente thèse, nous contestons la justesse de la théorie de Schacht. Read more
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2006 — On the common-link theoryAbstract
The Common-Link Theory, invented by Joseph Schacht and widely accepted in modern scholarship, argues that ḥadith authorities knowingly and purposefully placed traditions in circulation with little care to support these ḥadiths with satisfactory isnads. G. H. A. Juynboll, Michael Cook and other Schachtians subsequently embraced and elaborated upon this theory. This dissertation challenges the accuracy of Schacht's founding theory. The first chapter traces back and elucidates the formation of Schacht's Common-Link Theory, demonstrating how it is related to his other theories. The second chapter examines the responses to Schacht's theory, arguing that its proponents do no more than either expand … Read more
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2025 — Learning-based active sampling and modeling of aquatic environmentsAbstract
Cette thèse présente une nouvelle méthode d'échantillonnage actif dans les environnements aquatiques, visant à reconstruire efficacement les cartes de qualité de l'eau avec un nombre limité d'échantillons. Notre approche s'appuie sur des «Deep Q-Networks (DQN)» pour une planification intelligente des trajectoires, combinées à des processus gaussiens (GP) pour la reconstruction de cartes a posteriori. Ce cadre permet au système autonome de naviguer dans des régions inconnues, de décider intelligemment où prendre des échantillons et de générer des modèles environnementaux précis avec moins d'échantillons que les méthodes traditionnelles. Nous avons évalué notre méthode en utilisant à la fois un ensemble de … Read more
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2005 — Air carrier liability : unfinished unification of private international air lawAbstract
On 31 November 2003 the 1999 Montreal Convention for the Unification of Certain Rules for International Carriage by Air entered into force. Its purpose was to consolidate and modernize the Warsaw system and to reunify the provisions of several international instruments of private international air law under one legal instrument. The Montreal Convention consolidates the positive elements of the Warsaw Convention, the Hague Protocol, the Guadalajara Convention, the Guatemala City Protocol and Additional Protocol Numbers 3 and 4. It also simplifies and modernizes the requirements of documentation relating to the carriage by air of passengers, baggage and cargo. Most importantly, … Read more
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2020 — Rural-urban disparities in patient satisfaction with oral health careAbstract
Emami, Elham (Supervisor1) Read more
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1980 — Modelling of the soil mechanical properties to soil moisture conditions and their applications to study the traction developed by lugged tiresAbstract
The variations of soil mechanical properties, cohesion, c, internal friction angle, (phi), soil-rubber adhesion, c(,r)', soil-steel adhesion, c(,s)', soil-steel friction angle, (delta)(,s), soil-rubber friction angle, (delta)(,r), the sinkage moduli, kc, k(phi), and n, have been studied under field conditions for different soil depths of sandy loam and clay soils. Models to predict these parameters were developed in this study. These models were functions of soil moisture content, soil plastic limit or liquid limit and two constants which depend on the soil type and depth. Also, a model to estimate the soil moisture content by a simple and accurate method was … Read more
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2019 — The associations between pathological pathways in the progression of Alzheimer's diseaseAbstract
La maladie d'Alzheimer (MA) est pathologiquement caractérisée par l'accumulation progressive de β-amyloïde et de protéines tau ainsi que par la dégénérescence neuronale. Cependant, le lien complexe entre ces processus pathologiques et la démence est peu compris. En fait, le développement de marqueurs biologiques in vivo a considérablement aidé à la compréhension de la progression de la MA. Le modèle de marqueur biologique de la progression de la maladie le plus accepté soutient que β-amyloïde est l'élément déclencheur d'une suite d'évènements menant à l'hyperphosphorylation de tau et à la dégénérescence neuronale, provoquant ensuite la démence. Néanmoins, la présence de dépôt de … Read more
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2021 — Development of fast front-end electronics of a non-invasive detector for arterial input function based on dynamic positron emission tomographyAbstract
Positron emission tomography (PET) is used for monitoring biological activity/function (functional imaging). It is widely used for diagnostics of cancer, heart disease, and neurological disorders over time. Injecting a radiotracer with a positron-emitting radioisotope that provides information about the physiological activity in vivo. Dynamic PET is a more advanced version of PET where mathematical models, called kinetic models, are used to represent the underlying biology. Unfortunately, time-course information of the radiation activity concentration in the patient's arteries, called the arterial input function (AIF), is required to perform these models. This method causes discomfort for the patient and requires the presence … Read more
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1994 — Human leukotriene C4 synthase : a unique homodimeric and phisphoregulated glutathione S-transferaseAbstract
Human Leukotriene C$ sb4$ synthase is a membrane-bound glutathione S-transferase that catalyzes the first committed step leading to the biosynthesis of the pro-inflammatory mediators, the cysteinyl leukotrienes (LTC$ sb4,$ LTD$ sb4$ and LTE$ sb4$). Using chromatographic separation and photoaffinity labelling techniques, LTC$ sb4$ synthase was found to be a unique enzyme distinct from all other known glutathione S-transferases. An 18 kDa membrane polypeptide was specifically labelled in the microsomal membranes of myelocytic cell lines containing LTC$ sb4$ synthase activity (U937 and THP-1), with a photoaffinity derivative of LTC$ sb4$ (azido (I$ sp{125}$) -LTC$ sb4$) and was identified as a candidate … Read more