577 research outputs found
Modélisation et prévision du taux de change réal canadien
Rapport de recherche présenté à la Faculté des arts et des sciences en vue de l'obtention du grade de Maßtrise en sciences économiques
Entraßnement d'un modÚle supervisé pour la détection du plaisir en contexte de jeu vidéo à partir de signaux physiologiques et d'indices comportementaux
La modĂ©lisation de lâexpĂ©rience de jeu prĂ©sente un intĂ©rĂȘt considĂ©rable pour la conception de jeux vidĂ©o adaptatifs. Les jeux vidĂ©o adaptatifs utilisent lâinformation Ă©motionnelle contenue dans les signaux physiologiques et les indices comportementaux pour personnaliser lâexpĂ©rience de jeu vidĂ©o, et ce dans le but de gĂ©nĂ©rer une expĂ©rience optimale de jeu. Afin de modĂ©liser lâexpĂ©rience de jeu, le prĂ©sent projet de recherche sâest penchĂ© sur la dĂ©tection du plaisir dâun joueur Ă partir de signaux physiologiques (Ă©lectrocardiogramme, activitĂ© Ă©lectrodermale, activitĂ© respiratoire et Ă©lectromyogramme) et dâindices comportementaux (expressions faciales, mouvements de la tĂȘte et entrĂ©es dâun contrĂŽleur Xbox). Dans ce travail, des modĂšles supervisĂ©s(SVM, ForĂȘt dâarbres dĂ©cisionnels et kNN) ont Ă©tĂ© entrainĂ©s sur un jeu de donnĂ©es construit Ă partir de la base de donnĂ©es FUNii, qui contient les donnĂ©es physio-comportementales de 219 joueurs rĂ©parties sur 362 sĂ©ances de jeu de la franchise Assassinâs Creed. Une mĂ©thode pour la crĂ©ation de classes de plaisir Ă partir du facteur-fun, un outil dâannotation continue du plaisir, Ă Ă©galement Ă©tĂ© proposĂ©e. Le meilleur modĂšle entrainĂ© a permis de distinguer trois classes de plaisir avec un taux de classement de 53, 5% sur un jeu de test, une amĂ©lioration de 12,5% par rapport au meilleur rĂ©sultat obtenu dans des travaux antĂ©rieurs.Modeling the gaming experience is of considerable interest for designing adaptive video games. Adaptive video games use the emotional information contained in physiological signals and behavioral cues to personalize the video game experience,in order to generate an optimal gaming experience. With the purpose of modeling the gaming experience, this research project has focused on the detection of a playerâs fun using physiological signals (electrocardiogram, electrodermal activity, respiratory activity and electromyogram) and behavioral cues (facial expressions,head movements and facial expressions and inputs from an Xbox controller). In this work, supervised machine learning models (SVM, Random Forest and kNN) were trained on a dataset built from the FUNii database, which contains the physiobehavioral data of 219 players spread over 362 game sessions of the Assassinâs Creed franchise. A method for creating fun classes from the fun factor, a tool for continuous annotation of fun, has also been proposed. The best model trained allowed to distinguish three classes of pleasure with an accuracy of 53, 5% on a test dataset, an improvement of 12, 5% compared to the best result obtained in previous works
Ocular metrics for detecting attentional tunnelling
This paper focuses on ocular measurement to detect the human operatorâs particular state of âattentional tunnellingâ during a robot supervisory task. After a survey of the existing ocular metrics, an innovative fixation detection algorithm is proposed.
Then the metrics derived from the ocular parameters calculated by the algorithm are
tested in a human-robot experiment.
Among the metrics calculated, 3 of them appear to be able to statisticaly discrimintate the operators who faced attentional tunnelling
Soutien au développement de ressources numériques pour l'enseignement et l'apprentissage dans les universités québécoises: Rapport complet
TirĂ© de l'Ă©cran-titre (visionnĂ© le 27 juin 2017).Ce portrait se veut une source dâinformation pour les professionnels et les dĂ©cideurs engagĂ©s dans le soutien Ă lâenseignement et Ă lâapprentissage. Il est souhaitĂ© quâil suscite des discussions et initie des rĂ©flexions auprĂšs des intervenants prĂ©occupĂ©s par lâoffre de contenus numĂ©riques de qualitĂ© pour les Ă©tudiants
Soutien au développement de ressources numériques pour l'enseignement et l'apprentissage dans les universités québécoises : faits saillants
TirĂ© de l'Ă©cran-titre (visionnĂ© le 27 juin 2017).Entre octobre 2010 et janvier 2011, nous avons contactĂ© les membres du Sous-comitĂ© sur la pĂ©dagogie et les technologies de l'information et de la communication (SC-PTIC) de la CREPUQ pour leur demander de bien vouloir participer Ă cette cueillette d'information. De ceux-ci les rĂ©pondants de 15 universitĂ©s quĂ©bĂ©coises ont complĂ©tĂ© le questionnaire et participĂ© Ă un entretien tĂ©lĂ©phonique complĂ©mentaire pour fournir les donnĂ©es qui ont permis de produire ces quelques constats. Lâobjectif de la prĂ©sente dĂ©marche nâest pas de faire des comparaisons, mais plutĂŽt de mieux connaĂźtre, globalement, la situation dans les universitĂ©s quĂ©bĂ©coises
Tunable distributed sensing performance in Ca-based nanoparticle-doped optical fibers
Rayleigh scattering enhanced nanoparticle-doped optical fibers is a technology very promising for distributed sensing applications, however, it remains largely unexplored. This work demonstrates for the first time the possibility of tuning Rayleigh scattering and optical losses in Ca-based nanoparticle-doped silica optical fibers by controlling the kinetics of the re-nucleation process that nanoparticles undergo during fiber drawing by controlling preform feed, drawing speed and temperature. A 3D study by SEM, FIB-SEM and optical backscatter reflectometry (OBR) reveals an early-time kinetics at 1870 °C, with tunable Rayleigh scattering enhancement 43.2â47.4 dB, regarding a long-haul single mode fiber, SMF-28, and associated sensing lengths of 3â5.5 m. At 2065 °C, kinetics is slower and nanoparticle dissolution is favored. Consequently, enhanced scattering values of 24.9â26.9 dB/m and sensing lengths of 135â250 m are attained. Finally, thermal stability above 500 °C and tunable distributed temperature sensitivity are proved, from 18.6 pm/°C to 23.9 pm/°C, âŒ1.9â2.4 times larger than in a SMF-28. These results show the promising future of Rayleigh scattering enhanced nanoparticle-doped optical fibers for distributed sensing
Quebec : avian pathogens identification and genomic characterization : 2021 annual review of the Molecular Diagnostic Laboratory, Université de Montréal
(ENGLISH): COVID-19 AND THE GLOBAL EDUCATION EMERGENCY: PLANNING SYSTEMS FOR RECOVERY AND RESILIENCE
Post-traumatic-stress in the context of childhood maltreatment: pathways from attachment through mentalizing during the transition to parenthood
INTRODUCTION: This study aimed to clarify the role of mentalizing in pathways from attachment to Post Traumatic Stress Symptoms (PTSS) in survivors of childhood maltreatment (CM). We focused on the transition to parenting, a critical period for reworking parenting representations to reduce intergenerational maltreatment cycles. METHOD: Study participants included 100 pregnant CM survivors. We assessed PTSS with the SCID and attachment and mentalizing with the Adult Attachment Interview (AAI), which was rated for Attachment and Reflective Functioning (RF). RESULTS: Regarding Re-experiencing trauma symptoms, the results of the path analysis were consistent with mediation. CM survivors' mentalizing about their early relationships with their parents (RF-Other) directly impacted Re-experiencing trauma symptoms, and attachment had an effect on Re-experiencing trauma symptoms through mentalizing (RF-Other). Regarding Arousal/Reactivity symptoms, the results of the pathways analysis were consistent with partial mediation by mentalizing about early relationships with parents (RF-Other). In addition to the pathway from attachment via mentalizing (RF-Other) to Arousal/Reactivity, the pathway between attachment and Arousal/Reactivity also remained significant. DISCUSSION: This study provides new evidence of a mentalizing and attachment model of PTSS in CM survivors. The findings indicate that increased mentalizing about early relationships with parents is an important process associated with lower PTSS. Finally, we discuss the implications of developing interventions for CM survivors to reduce PTSS. Scaffolding the development of mentalizing regarding attachment relationships in which CM occurred may help CM survivors reduce the intrusion of traumatic memories and decrease trauma-related arousal and reactivity symptoms. Interventions to help CM survivors mentalize regarding parents and attachment relationships in which trauma occurred may be particularly important during the transition to parenting when activation of representations of parenting can trigger PTSS
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