367 research outputs found

    L'interprétation téléologique des droits constitutionnels

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    [À l'origine dans / Was originally part of : Fac. Droit - Coll. facultaire - Droit constitutionnel et LibertĂ©s publiques][À l'origine dans / Was originally part of : Fac. Droit - Coll. facultaire - ThĂ©ories du droit

    Editorial: Current Challenges and Future Perspectives on Emerging Bioelectrochemical Technologies

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    The increasing demand for energy worldwide, currently evaluated at 13 terawatts per year, has triggered a surge in research on alternative energy sources more sustainable and environmentally friendly. Bio-catalyzed electrochemical systems (BESs) are a rapidly growing biotechnology for sustainable production of bioenergy and/or value-added bioproducts using microorganisms as catalysts for bioelectrochemical reactions at the electrode surface. In the last decades, this biotechnology has been intensively studied and developed as a flexible and practical platform for multiple applications such as electricity production, wastewater treatment, pollutants remediation, desalination and production of biogas, biofuels, or other commodities. BESs could have a critical impact on societies in many spheres of activity and become one of the solutions to reform our petroleum-based economy. However, BESs research has so far been limited to lab scale with the notable exceptions of pilot scale microbial fuel cells for brewery and winery wastewater treatment coupled with electricity generation. In general, more knowledge has to be acquired to overcome the issues that are stymieing BESs development and commercialization. For example, it is critical to understand better microbial physiology including the mechanisms responsible for the transfer of electrons between the microbes and the electrodes to start optimizing the systems in a more rational manner. There are many BES processes and for each one of them there is a multitude of biological and electrochemical specifications to investigate and adjust such as the nature of the microbial platform, electrode materials, the reactor design, the substrate, the medium composition, and the operating conditions. The ultimate goal is to develop highly energy efficient BESs with a positive footprint on the environment while maintaining low cost and generating opportunities to create value. BESs are complex systems developed with elements found in multiple fields of science such as microbiology, molecular biology, bioinformatics, biochemistry, electrochemistry, material science and environmental engineering. Given the high volume of research activities going on in the field of BESs today, this e-book explores the current challenges, the more recent progresses, and the future perspectives of BESs technologies. The BESs discussed here include microbial fuel cells, microbial electrolysis cells, microbial electrosynthesis cells, microbial electroremediation cells, etc

    Évaluation des fonctions exĂ©cutives chez les Ă©tudiants du collĂ©gial

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    Recherche financĂ© par l'Association des collĂšges privĂ©s du QuĂ©bec (ACPQ) dans le cadre du programme de recherche et d’expĂ©rimentation pĂ©dagogique (PREP).Comprend des rĂ©fĂ©rences bibliographiques

    Real-Time Decreased Sensitivity to an Audio-Visual Illusion during Goal-Directed Reaching

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    In humans, sensory afferences are combined and integrated by the central nervous system (Ernst MO, BĂŒlthoff HH (2004) Trends Cogn. Sci. 8: 162–169) and appear to provide a holistic representation of the environment. Empirical studies have repeatedly shown that vision dominates the other senses, especially for tasks with spatial demands. In contrast, it has also been observed that sound can strongly alter the perception of visual events. For example, when presented with 2 flashes and 1 beep in a very brief period of time, humans often report seeing 1 flash (i.e. fusion illusion, Andersen TS, Tiippana K, Sams M (2004) Brain Res. Cogn. Brain Res. 21: 301–308). However, it is not known how an unfolding movement modulates the contribution of vision to perception. Here, we used the audio-visual illusion to demonstrate that goal-directed movements can alter visual information processing in real-time. Specifically, the fusion illusion was linearly reduced as a function of limb velocity. These results suggest that cue combination and integration can be modulated in real-time by goal-directed behaviors; perhaps through sensory gating (Chapman CE, Beauchamp E (2006) J. Neurophysiol. 96: 1664–1675) and/or altered sensory noise (Ernst MO, BĂŒlthoff HH (2004) Trends Cogn. Sci. 8: 162–169) during limb movements

    Eye movements may cause motor contagion effects

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    When a person executes a movement, the movement is more errorful while observing another person’s actions that are incongruent rather than congruent with the executed action. This effect is known as “motor contagion”. Accounts of this effect are often grounded in simulation mechanisms: increased movement error emerges because the motor codes associated with observed actions compete with motor codes of the goal action. It is also possible, however, that the increased movement error is linked to eye movements that are executed simultaneously with the hand movement because oculomotor and manual-motor systems are highly interconnected. In the present study, participants performed a motor contagion task in which they executed horizontal arm movements while observing a model making either vertical (incongruent) or horizontal (congruent) movements under three conditions: no instruction, maintain central fixation, or track the model’s hand with the eyes. A significant motor contagion-like effect was only found in the ‘track’ condition. Thus, ‘motor contagion’ in the present task may be an artifact of simultaneously executed incongruent eye movements. These data are discussed in the context of stimulation and associative learning theories, and raise eye movements as a critical methodological consideration for future work on motor contagion

    La solitude chez les jeunes : recension des écrits

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    Contrairement à la croyance populaire qui veut que la solitude soit avant tout un problÚme vécu par les adultes, notamment par les personnes ùgées, ce sentiment peut se manifester tÎt dans la vie. Un nombre croissant d'études révÚlent qu'un pourcentage important d'adolescents vivent un épisode intense de solitude. Cette recension des écrits trace un portrait de l'expérience de la solitude chez les jeunes. Il sera question de l'importance du problÚme, de la description du phénomÚne, des sentiments reliés à cette expérience, des facteurs qui prédisposent les jeunes à une telle expérience, des facteurs susceptibles de déclencher le phénomÚne et des stratégies d'ajustement déployées pour faire face à une situation d'isolement.Contrary to the popular belief that loneliness is typically associated with adults, and especially with older persons, this state can occur early in life. In fact, an increasing number of studies indicate that an important proportion of adolescents experience an intense episode of loneliness. This literature review describes loneliness among younger persons. We discuss the ampleness of the problem, the definition of the phenomenon, the feeling associated with loneliness, precipitating and predisposating factors and, finally, coping strategies to deal with this experience

    Étude comparative des facteurs influençant les Ă©lĂšves du secondaire privĂ© Ă  choisir un collĂšge privĂ© ou public pour la suite de leurs Ă©tudes

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    Rapport final d'un projet de recherche financĂ© par l'Association des collĂšges privĂ©s du QuĂ©bec (ACPQ) dans le cadre du programme de recherche et d’expĂ©rimentation pĂ©dagogique (PREP) et appuyĂ© par la FĂ©dĂ©ration des Ă©tablissements d'enseignement privĂ© (FEEP).Comprend des rĂ©fĂ©rences bibliographiques

    Les facteurs influençant le choix de fréquenter un collÚge privé ou public [rapport final]

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    Rapport final d'un projet de recherche financĂ© par l'Association des collĂšges privĂ©s du QuĂ©bec (ACPQ) dans le cadre du programme de recherche et d’expĂ©rimentation pĂ©dagogique (PREP) et appuyĂ© par la FĂ©dĂ©ration des Ă©tablissements d'enseignement privĂ© (FEEP)

    Élaboration et validation d'un outil de dĂ©pistage des dĂ©ficits du fonctionnement exĂ©cutif

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    Recherche financĂ© par l'Association des collĂšges privĂ©s du QuĂ©bec (ACPQ) dans le cadre du programme de recherche et d’expĂ©rimentation pĂ©dagogique (PREP).Comprend des rĂ©fĂ©rences bibliographiques
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