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  • D’Ombrain, Nicholas.
    1966 — The evolution of British defence strategy, 1904-1914 : a study in supreme command during an age of transition.
    Résumé

    This is a study in supreme command, its nature and the course of its development within the fabric of the English Constitution during the decade or so prior to the shattering of the peace of the old world and the coming of the War in Europe. It is a study concerned with an examination of the formulation and development of defence policy only in so far as these factors helped determine the course and outcome of the struggle, which occurred during these years, to establish an effective form of supreme command. [...]  Lire la suite

  • Da Conceicao, José Carlos
    1990 — La genèse de Carlos et de sa Cosworth suivi de La Cosworth /
    Résumé

    This Master's thesis in creative writing consists of two parts: a novel and a critical study. The creative writing part is entitled La Cosworth. Carlos da Silva, the main character, seeks material goods to the detriment of his friends, family and happiness. He begins to decay simultaneously with his car and dies after it is completely destroyed in an accident. Product of his environment, he ceases to exist after he loses his car, which symbolizes his way of life and his existence. La genese de Carlos et de sa Cosworth precedes the creative writing part and shows the evolution of …  Lire la suite

  • Da Cruz, Antonio Carlos.
    1997 — Experimental and modelling study of the plasma vapour-phase synthesis of ultrafine aluminum nitride powders
    Résumé

    An experimental and theoretical study of the fundamentals of the vapour phase synthesis of ultrafine aluminum nitride (AIN) particles using thermal plasma was carried out. The study used the concept of a transferred-arc reactor which produces AlN ultrafine powders in two stages: evaporation of aluminum (Al) metal by the transferred-arc in non nitriding conditions; and the reaction between Al vapour and ammonia (NH3) in a separate tubular reactor. A new version of this reactor concept was built in which the transferred-arc chamber and tubular reactor were vertically aligned. This reactor design allowed the study of both radial and axial mixing …  Lire la suite

  • da Silva Castanheria, Jason
    2024 — MEG, myself, and I: Understanding inter-individual diversity of neurophysiological brain activity
    Résumé

    La recherche neuroscientifique vise à comprendre la nature biologique des traits et des comportements individuels. Le domaine a fait de grands progrès vers cet objectif grâce à l'avancée des grands ensembles de données de neuro-imagerie et des nouveaux outils informatiques librement accessibles. Toutefois, à mesure que la taille des échantillons en neurosciences augmente pour atteindre l'échelle de la population, il devient de plus en plus difficile de concilier les effets au niveau du groupe avec la variabilité interindividuelle. Des études récentes sur l'imagerie par résonance magnétique fonctionnelle (IRMf) montrent que la connectivité fonctionnelle à l'état de repos permet à la …  Lire la suite

  • Da Silva Lira Filho, Alonso
    2023 — Deciphering Leishmania spp.-derived extracellular vesicles implication in the development of Cutaneous Leishmaniasis
    Résumé

    Leishmania spp. est un parasite eucaryote protozoaire qui utilise les phlébotomies femelles comme vecteur et infecte les cellules hôtes mammifères pendant la collecte de sang, ce qui est nécessaire à la fois pour l'alimentation de la mouche mais aussi pour la maturation de ses oeufs. Les cellules myéloïdes sont les principales cellules infectées, y compris les neutrophiles et les macrophages, bien que les neutrophiles soient utilisés temporairement car ce sont des cellules transitoires ayant une très courte durée de vie de pourriel, elles sont en outre englouties par les macrophages qui sont les principales cellules hôtes où le changement d'une …  Lire la suite

  • Da Silva Maia, Alexandre.
    1998 — Renaissance desire and disobedience : eroticizing human curiosity and learning in Doctor Faustus
    Résumé

    Focusing on the A-text (1604) version of Marlowe's Doctor Faustus , this study further assesses biographical information on the poet and intellectual currents of the Counter Reformation, so as to investigate the play's relation to emergent trends of individualism in the Renaissance, recovery of the pagan past, and intellectual aspirations that could readily collide with orthodoxy. Clearly reflecting anxieties of the period about individual deviance from social norms through intellectual overreaching, Doctor Faustus powerfully testifies to the potential dangers of human aspiration and the scholarly spirit of unbounded learning. While thus exploring the exotic temptations of forbidden knowledge, the play …  Lire la suite

  • Da Silva Vieira, Marcelo Augusto
    2026 — Adaptation to communication constraints: prosodic flexibility in Parkinson’s Disease and word frequency effect on auditory learning in young adults
    Résumé

    La communication repose sur des processus complexes de transmission et d’interprétation des messages, nécessitant un contrôle musculaire précis et des fonctions cognitives avancées telles que l’identification, la discrimination et l’intégration. Les locuteurs doivent faire face à des contraintes et répondre rapidement à des stimuli pour maintenir des interactions fluides. En ce sens, la communication constitue un comportement régulé et adaptatif, impliquant la reconnaissance d’événements déviants, l’apprentissage pour les gérer et leur application dans des contextes futurs.Le premier manuscrit examine la coordination entre la hauteur (f0) et l’emphase spectrale (SpE; effort vocal, intensité) chez des adultes âgés atteints ou non de …  Lire la suite

  • Da Silva, Andrey
    2008 — Numerical studies of aeroacoustic aspects of wind instruments
    Résumé

    Les caractéristiques de l'écoulement dynamique dans les systèmes d'embouchure à anche simple, ainsi que l'influence d' ́ecoulements à faible nombre de Mach sur certains des paramètres li ́es au rayonnement acoustique des instruments à vent et des guides d'ondes en général sont ́etudi ́ees dans cette thèse. Dans le premier cas, une technique numérique, basée sur une méthode de Boltzmann couplée à une méthode de différence finie, est développée afin d' étudier l'interaction fluide-structure dans le systéme bec-anche qui provient d'un ́ecoulement visqueux instable de faible nombre de Mach. Les résultats obtenus, en régime stationnaire avec une anche statique, concident …  Lire la suite

  • Da Silva, Bernadette A. (Bernadette Ann)
    1985 — The post-colonial state : Uganda 1962-1971
  • Da Silva, Pedro.
    2000 — Effect of concrete strength on axial load response of circular columns
    Résumé

    The behaviour of 10 spirally reinforced concrete columns and 5 plain concrete columns subjected to a concentric compressive load is investigated. The reinforced concrete columns were designed using the CSA A23.3-94 Standard. The experimental specimens were made of concretes with compressive strengths ranging from 35 MPa to 125 MPa. Two types of steel spiral reinforcement, Grade 400 and Grade 500, were used to investigate the ability of a higher yield strength steel to confine the concrete core. The response of the reinforced specimens is compared to predictions using a stress-strain model for confined concrete. The determination of the predicted response …  Lire la suite

  • da Silva, Ronan
    2018 — Spinal commissural axon guidance in the development of somatosensory topography and topognosis
    Résumé

    Avoidance of environmental dangers depends on nociceptive topognosis or the ability to localize painful stimuli. In mammals, nociceptive signals originating from one side of the body are relayed to the contralateral brain hemisphere by spinothalamic fibres, resulting in an inverted left-right somatosensory representation of the body. To address how the laterality of spinothalamic fibres affects nociceptive topognosis, the phenotypes of mutations to the netrin1 receptor Dcc/DCC gene, which is necessary for commissural axon guidance, was assessed. To this end, a spinal-specific conditional knockout mouse line for Dcc (DccSpKO) was generated. In parallel, the perception of stimuli was assessed in congenital …  Lire la suite

  • da Silva-Castanheira, Kevin
    2023 — Unifying Cognitive Effort Allocation in Value-Based Choice and Cognitive Control
    Résumé

    Why do the decisions we make sometimes feel quick and effortless while other times long and effortful? My thesis explores the feeling and exertion of mental effort in both objective and subjective decisions. Recent models posit that mental effort is invested when the costs of exertion are associated with commensurate rewards. Yet, to better understand the predictions of cost-benefit models of effort, we first need to establish measures of momentary effort exertion while deciding. In the first experiment, we test whether task-evoked pupillary responses reflect momentary effort exertion while performing an objective decision-making task and track both individual differences in …  Lire la suite

  • Da Silveira, Eduardo
    2005 — Cost-effectiveness decision analyses comparing covered to uncovered self-expandable metal stents to elective or on-demand polyethylene stent changes in patients with distal malignant biliary obstruction
    Résumé

    Introduction. Endoscopic placement of stents is the preferred treatment for palliation of obstructive symptoms in non-operative candidates but significant differences in procedure and stent-related costs, patency of stents survival of patients exist. Aim. To determine the cost-effectiveness of two strategies using Polyethylene (PE) stents (PE with replacement on demand; PE with routine exchange every 3 months), as well as uncovered (U-SEMS) and covered self-expandable metal stent (C-SEMS) in the management of distal malignant biliary obstruction. Methods. A Markov model comparing four different initial approaches was designed: (1) PE stent with replacement on demand (PE-D); (2) PE stent changed every 3 …  Lire la suite

  • Daba, Alina
    2012 — Insights on systemic and cellular iron homeostasis: hepcidin responses to oral and parenteral iron loading and an alternative mechanism for ferritin mRNA translation
    Résumé

    Le fer est vital pour tous les organismes vivants, cependant étant donné son habilité à donner ou accepter des électrons facilement, il a aussi le potentiel d'être toxique. Des mécanismes très précis ont évolué pour contrôler l'homéostasie du fer aux niveaux systémique et cellulaire. L'hormone peptidique, hepcidine, contrôle l'homéostasie du fer au niveau systémique par la dégradation de la ferroportine, l'exportateur cellulaire du fer. En conséquence, l'efflux du fer des entérocytes, des macrophages et des hépatocytes vers la circulation diminue. Au niveau cellulaire, le système IRE / IRP contrôle, d'une manière coordonnée, les niveaux des protéines impliquées dans l'acquisition, l'utilisation, …  Lire la suite

  • Dabbas, Basel.
    2007 — Combined effects of vitamin D receptor agonists and histone deacetylase inhibition on vitamin D-resistant squamous carcinoma cells
    Résumé

    The active form of vitamin D, 1,25-dihydroxyvitamin D3 (1,25D), is a key calcium (Ca++) regulatory hormone. It is also associated with functions unrelated to Ca++ homeostasis. Here, special attention is paid towards the anticancer properties of 1,25D. 1,25D strongly inhibits the growth of well-differentiated head and neck squamous cell carcinoma (HNSCC) derived cell lines. However, advanced, less differentiated, HNSCC cell lines (e.g. SCC4) are partially resistant to 1,25D. Resistance to nuclear receptor (NR) agonists is a common event that occurs in other NR-related treatments. For example, some leukemias develop resistance to the usually effective retinoic acid (RA) treatment. However, treating …  Lire la suite

  • Dabbas, Mohannad
    2019 — Examining the potential of utilzing geothermal energy from ejected mine water towards mine heating and peliminary assessment of deep lake cooling systems for deep underground mines
    Résumé

    L'énergie renouvelable est en train de devenir un sujet clé de nos jours avec des thèmes de recherche croissants autour de l'énergie durable. L'industrie minière au Canada consomme une grande quantité d'énergie non renouvelable, ce qui contribue énormément aux émissions de gaz à effet de serre du pays. Par conséquent, cette thèse étudie de nouvelles possibilités pour l'industrie minière d'accroître sa dépendance à l'égard de sources d'énergie renouvelables non polluantes. La première partie de la thèse porte sur l'énergie géothermique potentielle pouvant être obtenue à partir des eaux éjectées des exploitations minières souterraines actives. La thèse illustre le potentiel économique …  Lire la suite

  • Dabboussi, Wael
    2003 — High strain rate deformation and fracture of engineering materials
    Résumé

    Containment structures for aircraft engines must withstand impacts of failed engine components, which may be traveling at extremely high velocities. Therefore, the design of such structures requires a thorough knowledge of material behaviour at high rates of deformation. It is well known that at strain rates above 102 s-1, the yield stress of metals may be significantly different than at quasi-static rates. In addition, material fracture under dynamic loading can also differ from that at slower rates due to manifestation of different failure mechanisms. The purpose of this study was to gain an understanding and determine the constitutive behaviour and …  Lire la suite

  • Dabby, Dia
    2017 — Through the prism of religious diversity and law in Canada: public schools as sites of belonging and boundaries
    Résumé

    Le milieu scolaire a, depuis longue date, été confié un mandat unique, soit celui de socialiser les enfants de notre société. Dans le contexte canadien, ceci a suscité un nombre de litiges sur la place de la religion dans les écoles publiques. Cette thèse explore trois études de cas qui interrogent la place de la diversité religieuse dans ces écoles et, en parallèle, forment un narratif à travers lequel il est possible de comprendre les discours de société sur l'appartenance et la tolérance. Cette thèse s'inspire des histoires juridiques pour contextualiser comment les enfants sont évoqués, décrits et interpelés lorsqu'ils …  Lire la suite

  • Dabby, Layla
    2017 — Explicit and implicit attitudes of Canadian psychiatrists toward people with mental illness
    Résumé

    People with mental illness suffer stigma and discrimination across a variety of contexts, including the health care setting, and clinicians' attitudes play an important role in perpetuating stigma. Effective stigma reduction interventions for physicians require better understanding of the interplay between explicit (conscious, controllable) and implicit (subconscious, automatic) forms of bias, and of predictors and moderators of stigma. Members of a Canadian university psychiatry department and of the Canadian Psychiatric Association were invited to participate in a web-based study consisting of two measures of explicit attitudes, the Social Distance Scale (SDS) and the Opening Minds Scale for Health Care Providers …  Lire la suite

  • Dableh, Liliane J.
    2002 — Cannabinoid receptors in animal models of acute, tonic and chronic pain
    Résumé

    The aim of the work presented here is to evaluate the effects of cannabinoids in three animal models of pain: acute, tonic and chronic. The tail flick test (acute pain) was used to test the effect of the cannabinoid agonist, WIN 55,212--2, on tail withdrawal latency from a noxious radiant heat source. It was also tested on the allodynia induced by either endogenous release or exogenous administration of substance P. WIN 55,212--2 was antinociceptive in this test, and blocked the substance P-induced allodynia, suggesting a post-synaptic site of action. The formalin test (tonic pain) was used to test the effects …  Lire la suite

  • DaBreo, Jamin
    2013 — Impact of gravity loads on the lateral performance of cold- formed steel frame/ steel sheathed shear walls
    Résumé

    Canadian seismic design provisions for cold-formed steel framed/steel sheathed shear walls have been developed from previous research at McGill University with the intent of being incorporated into the Canadian section of the North American Lateral Design Standard for Cold-Formed Steel Framing (AISI S213), and ultimately to provide guidelines for design of these systems in the National Building Code of Canada and CSA-S136 Specification.In this previous research, a limited number of shear walls displayed unfavourable damage due to twisting deformations of the chord-studs and by local buckling. Also, the shear walls tested in previous research were only laterally loaded. The objective …  Lire la suite

  • Dabros, Anna
    2009 — Effects of simulated climate change on post-disturbance «Populus tremuloides - Picea mariana» ecosystems in northwestern Quebec
    Résumé

    L'établissement de peupliers faux-trembles (Populus tremuloides Michx.) fut observé au nord de sa distribution, dans la forêt boréale mixte, en des endroits auparavant dominés par l'épinette noire (Picea mariana (Miller) BSP). Nous avons réalisé une simulation de réchauffement climatique, dans le but d'explorer comment les changements climatiques pourraient influencer la croissance du peuplier faux-tremble et de l'épinette noire. Le traitement de réchauffement fut fourni par l'installation, à l'été 2005, de vingt chambres sans toit (CST) et de vingt parcelles témoins et ce, sur trois sites distincts (post-incendie, route forestière et site de coupe). Chaque parcelle comprenait un jeune peuplier faux-tremble …  Lire la suite

  • Dabros, Anna
    2004 — Distribution patterns of sedges in subarctic fens : ecological and phylogenetic perspectives
    Résumé

    The objective of this study is to assess current distributional patterns of species within a community, while taking into account species' evolutionary histories, as reflected in their phylogenetic relationships. The hypothesis is that closely related species segregate along environmental gradients, either due to historic evolutionary divergence of their niches, or to ecological processes presently occurring within a community. Distribution along environmental gradients was compared to phylogenetic structure of the 27 sedge species (Cyperaceae) growing in the subarctic fen communities of Schefferville, northern Quebec. Field data suggest that within these fens, sedges mostly differentiate along gradients of rooting depth and pH. …  Lire la suite

  • Dabrowski, Christian
    2009 — Mutagenesis of the substrate binding site of protein disulfide isomerase
    Résumé

    Protein disulfide isomerase (PDI) is the most abundant and best characterized member of the extensive PDI family of proteins found in the endoplasmic reticulum. PDI plays an important role in protein folding. It is composed of four thioredoxin-like domains denoted as a-b-b'-a'. Recent studies have identified a hydrophobic surface on the b' domain as the main binding site for the unfolded protein substrates of PDI. Here, the main hydrophobic residues of the b' domain were mutated in a bb' construct and tested for their ability to bind to the 14-residue mastoparan peptide. Most of the mutants had a significant effect …  Lire la suite

  • Dacey, John Robert.
    1940 — Pressure, volume, temperature, and density relations in the critical region. --.
    Résumé

    For over one hundred years experiments and observations have been made on the so called 'critical' change of a liquid to a gas. No adequate explanation of all the phenomena has yet appeared. Some investigators cling to the classical picture of this transition. They believe that a liquid differs from a gas by degree only, and hold that when the critical change occurs the two phases are physically identical. Anomalous behaviour, which has been observed, would be attributed to impurities, gravitational effects, and other extraneous factors. On the other hand, an increasing amount of evidence has been, and is being …  Lire la suite

  • Dadar, Mahsa
    2018 — Development and validation of automatic tools for segmentation of white matter hyperintensities
    Résumé

    Les méthodes de segmentation automatique de différents tissus et pathologies sont primordiales pour l'étude systématique du cerveau afin d'examiner les changements qui se produisent dans différentes composantes du phénomène étudié. Les hyperintensités de la matière blanche (HMB) sont un des éléments caractéristiques de la maladie des petits vaisseaux qui doit être évalué chez les populations vieillissantes ou souffrant de la maladie d'Alzheimer (MA), afin d'estimer les impacts de la maladie vasculaire. La technique de segmentation proposée utilise un procédé de classification par apprentissage automatique, en associant un ensemble de caractéristiques d'intensité et d'emplacement, obtenues à partir de séquences de RM …  Lire la suite

  • Dade, Lauren A.
    2000 — Brain structures subserving olfactory and visual learning and recognition : similarities and differences in nonverbal memory processing
    Résumé

    The aim of these experiments was to investigate learning and memory extensively in two nonverbal domains (olfactory and visual), and to determine similarities and differences in the function of the neural substrates that subserve these modalities. Two complementary methodological approaches were taken: (1) examination of learning and retention in patients with resection from left (LR) or right (RR) temporal lobe, and (2) study of brain function via Positron Emission Tomography (PET) of healthy subjects during memory processing. Two parallel recognition tests were developed (one olfactory, one visual) that examined memory at three stages: following a single exposure to test stimuli, …  Lire la suite

  • Dadson, Robert Benjamin.
    1966 — Response of certain species in pure and mixed seedings to irrigation.
    Résumé

    The influence of irrigation on timothy, alfalfa, ladino, bromegrass, and birdsfoot trefoil was investigated. Equal amounts of water were applied at four rates. Irrigation effected greater root and forage yields. The most efficient rate of irrigation was 0.1 inch followed by 0.4 inch and 1.0 inch per hour. [...]  Lire la suite

  • Daemi Milani, Farzad
    2024 — Persian-Arabic Seventeen-Tone Temperament: A Microtonal Extension to the Heptatonic Scale
    Résumé

    La prédominance du tempérament égal à douze notes comme base fondamentale de la musique dans le monde peut être retracée à la perspective de la musique classique occidentale, où le besoin s'est fait sentir de sélectionner un ensemble limité d'intervalles musicaux à assigner au clavier. Cependant, ce tempérament n'englobe pas les riches subtilités tonales que l'on trouve dans la musique traditionnelle arabo-persane. Dans cette étude, je me penche sur les qualités distinctives des deuxième, troisième, sixième, et septième degrés d'une échelle heptatonique qui, dans la tradition arabo-persane, permet des variations majeures, mineures, et neutres. Cette approche unique permet d'obtenir un …  Lire la suite

  • Daenzer, Renaud
    2011 — Investigating the role of ferrous iron in the arsenic(V)-iron(II, III) coprecipitation process system
    Résumé

    Cette thèse à pour objet d'étudier les effets des ions ferreux (Fe(II)) sur la stabilisation, par neutralisation à base de chaux, de l'arsenic (As(V)) contenu dans des solutions acides sulfatées. Le rôle des ions ferreux a été analysé à l'aide de différents types d'expériences. Premièrement, des essais de co-précipitation en circuit continu (CCPTN) comprenant deux étapes ont été réalisés pour différentes fractions de Fe(II)/Fe(III), tout en conservant un rapport molaire Fe(tot.)/As(V) égal à 4; les produits obtenus ont par la suite été soumis à des tests de stabilité à long terme. Les résultats de ces tests ont montré de façon …  Lire la suite

  • Dafinov, Emil
    2014 — Aspect-oriented modelling of software framework interfaces
    Résumé

    Les frameworks orientés objet sont un moyen important de la réutilisation de code, car ils permettent d'améliorer la productivité des développeurs. Cependant, les frameworks présentent souvent à l'utilisateur une courbe d'apprentissage abrupte avant qu'ils ne puissent être exploitées efficacement. La cause de ce problème est le fait que les frameworks offrent de nombreuses fonctionnalités, mais leur documentation est souvent incomplète et informelle. Dans la thèse suivante, nous proposons une méthode qui s'appuie sur les feature models afin de décrire les caractéristiques(ou features) offertes par un framework et les relations qu'ils existent entre eux. La méthode Reusable Aspect Models est utilisé …  Lire la suite

  • Dafoe, Andrew
    2013 — Design and analysis of hydrogel sensors for the quantification of vitamin D using ultrasound spectroscopy
    Résumé

    Le développement de techniques d'évaluations cliniques et en ligne associées à l'analyse de systèmes chimiques complexes est devenu un domaine de grand intérêt en recherche analytique. Un protocole idéal pourrait effectuer des mesures rapides et précises en utilisant des réactifs peu dispendieux et à faible coût d'instrumentation. Hors, de nombreux obstacles liés aux techniques de spectroscopie actuelles peuvent nuire à la quantification efficace de certaines matrices d'échantillons. Par exemple, des milieux diffusants à grande variation tels que du sang, du sérum, des tissus, des suspensions et d'autres liquides biologiques sont difficiles à analyser en utilisant des stratégies optiques conventionnelles. De …  Lire la suite

  • Dagenais, André
    2019 — A methodology to analyze the economic viability of a DC transmission grid with onshore and offshore terminals
    Résumé

    This thesis aims to build a tool for network planners to design large-scale direct current (DC) grids that can link isolated alternative current (AC) grids to large AC grids, integrate offshore wind resources and transmit bulk power between large AC grids. Traditional high-voltage direct current (HVDC) systems usually consist of only point-to-point electricity transmission and do not allow connecting multiple branches on a single node. In this thesis, we build an approach that designs a large-scale HVDC grid and computes power flow for given parameters, which is then resolved as a mixed-integer non-linear programming (MINLP) optimization problem. To find a …  Lire la suite

  • Dagenais, Barthélémy
    2008 — Recommending adaptive changes for framework evolution
    Résumé

    Application frameworks provide a general design that connects together the different parts of a program and that free developers from low-value activities. In the course of a framework's evolution, changes ranging from a simple function renaming to major modifications of the design can break client programs that depend on the framework. Finding suitable replacements for framework elements that were accessed by a client program and deleted as part of the framework's evolution can be a challenging task. We present a recommendation system, SemDiff, that suggests adaptations to client programs by analyzing how a framework was adapted to its own changes. …  Lire la suite

  • Dagenais, Barthélémy
    2012 — Analysis and recommendations for developer learning resources
    Résumé

    Developer documentation helps developers learn frameworks and libraries, yet developing and maintaining accurate documentation require considerable effort and resources. Contributors who work on developer documentation need to at least take into account the project's code and the support needs of users. Although related, the documentation, the code, and the support needs evolve and are not always synchronized: for example, new features in the code are not always documented and questions repeatedly asked by users on support channels such as mailing lists may not be addressed by the documentation. Our thesis is that by studying how the relationships between documentation, code, …  Lire la suite

  • Dagenais, Catherine
    1992 — A developmental study of visual filtering /
    Résumé

    Visual selective attention was investigated in children aged 5, 7 and 9 and in adults. The groups were compared on a filtering task in which conditions varied with regard to number (0, 2, 8) and location (close, far) of the non-relevant stimuli surrounding the targeted stimuli and the presence or absence of a solid-line border around the target stimuli. The results were analyzed with regard to development differences between the age groups. Contrary to expectations, the presence of non-relevant stimuli was not related to impaired performance nor was the presence of a solid-line border related to enhanced performance. No effect …  Lire la suite

  • Dagenais, Gilles R.
    1966 — Hemodynamic effects of meals in normal men at rest and during exercise.
    Résumé

    The present study was undertaken to evaluate the effects of both carbohydrate and protein rich meals on the cardiodynamics in men at rest and during exercise. Heart rate, oxygen consumption, arterial pressure and cardiac output were measured in twenty-four fasting men at rest and during exercise. [...]  Lire la suite

  • Dagenais, Maryse
    2018 — Regulation of tissue homeostasis and tumorigenesis by innate immunity and cell death pathways
    Résumé

    L'immunité innée est la première ligne défense de l'hôte. Afin de rétablir l'homéostasie, l'immunité innée peut induire la mort cellulaire ou l'inflammation afin de se débarrasser d'insulte infectueuse ou non. Bien que bénéfiques, ces réponses peuvent être néfastes si elles ne sont pas contrôlées et peuvent contribuer aux pathologies inflammatoires et aux maladies comme le cancer. Plusieurs points de contrôle régulent l'étendue de l'inflammation et la mort cellulaire, y compris les protéines inhibitrices d'apoptose (IAP), les inflammmasomes et la signalisation du récepteur de l'interleukine (IL)-1 (IL-1R1). Notamment, les perturbations génétiques de ces facteurs sont associées à des maladies inflammatoires et …  Lire la suite

  • Dagenais, Michel R.
    1987 — Timing analysis for MOSFETS, an integrated approach
    Résumé

    Timing and electrical verification is an essential part of the design of VLSI digital MOS circuits. It consists of determining the maximum operating frequency of a circuit, and verifying that the circuit will always produce the expected logical behavior at or under this frequency. This complex task requires considerable computer and human resources. The classical simulation approach cannot be used to insure the timing and electrical correctness of the large circuits that are now being designed. The huge number of possible states in large circuits renders this method impractical. Worst-case analysis tools alleviate the problem by restricting the analysis to …  Lire la suite

  • Dagenais, Rémi
    2023 — Modeling the dynamic relationship between the arterial blood pressure fluctuations and the BOLD-fMRI signal
    Résumé

    L'IRM BOLD est la technique prédominante pour étudier non invasivement l'activité neuronale avec une résolution spatiale élevée. Toutefois, comme il s'agit d'une mesure indirecte de l'activité cérébrale, le contraste BOLD est modulé de manière significative par des facteurs non neuronaux tels que le mouvement, la pulsatilité cardiaque, la respiration et les fluctuations de la pression artérielle.La correction des mouvements et des fluctuations cardiorespiratoires s'est révélé importante dans les études d'IRM fonctionnel, en particulier dans les analyses de connectivité fonctionnelle au repos. Malgré le nombre important de travaux réalisés sur le sujet, aucun consensus clair sur la correction du signal n'a …  Lire la suite