Oeuvres sans demeure

Le mémoire que voici est une exploration d'un travail en expansion. L'objectif premier est de poser une réflexion nouvelle sur une pratique de plus en plus courante dans le milieu de l'art actuel, comme en témoigne ma participation au dernier numéro de la revue montréalaise ESSE (60 -dossier canular). Ainsi, à partir de différentes notions mettant en relation ou en opposition la réalité et la fiction, le vrai, le faux, et le moins vrai, j'ai tenté de cerner les différentes possibilités du travail de création que j'ai élaboré dans le cadre de mon mémoire de production en Études des arts. Cette pratique est constituée de trois textes publiés dans des revues d'art montréalaises ainsi que tout ce qui les entoure. Ces textes sont-ils de vrais articles, à propos de véritables artistes, ou sont-ils des constructions de toutes pièces? Jusqu'à quel point sont-ils vrais, moins vrais, ou même carrément faux? J'ai cerné l'aspect théorique de ce travail de deux points de vue presque opposés. Puisque la nature de ces articles diffère selon la réception qu'en fera chaque lecteur (ou spectateur), j'ai dû concevoir cette pratique à partir de son dévoilement, ou de sa transparence. Le premier volet du mémoire concerne une pratique que j'associerai principalement à la mystification telle que Jean-François Jendillou l'explique dans son ouvrage phare (ou pourquoi pas fard!) L'esthétique de la mystification. Je m'attarderai aussi dans ce passage sur d'autres concepts, voisins de la mystification, comme le trompe-l'oeil, le canular et la supposition d'auteur. Le second volet, développé au dernier chapitre, fait état d'une pratique transparente, ou à faible coefficient de visibilité. J'en suis arrivé à la conclusion qu'une telle pratique, que j'ai nommée OEuvres sans demeure, ne peut avoir une seule approche théorique due à sa forme ambiguë. Elle est une forme ouverte, parfois mystificatrice lorsque dévoilée (ou auto-dévoilée), et parfois sans véritable contour, potentiellement immense et infini, tant et aussi longtemps que des lecteurs liront ces textes comme de véritables textes, et que des gens en parleront ainsi. ______________________________________________________________________________ MOTS-CLÉS DE L’AUTEUR : Mystification, Canular, Trompe-l'œil, Œuvre invisible, Œuvre théorique, Pascal Rhoze, Biennale de Paris

Démarche pour concevoir une grille d’évaluation à échelle descriptive en formation à distance

Comprend des références bibliographiquesCe document propose une démarche en huit étapes à suivre pour concevoir ou améliorer une grille d’évaluation à échelle descriptive analytique

Shared decision making in patients with low risk chest pain: prospective randomized pragmatic trial.

OBJECTIVE: To compare the effectiveness of shared decision making with usual care in choice of admission for observation and further cardiac testing or for referral for outpatient evaluation in patients with possible acute coronary syndrome. DESIGN: Multicenter pragmatic parallel randomized controlled trial. SETTING: Six emergency departments in the United States. PARTICIPANTS: 898 adults (aged \u3e17 years) with a primary complaint of chest pain who were being considered for admission to an observation unit for cardiac testing (451 were allocated to the decision aid and 447 to usual care), and 361 emergency clinicians (emergency physicians, nurse practitioners, and physician assistants) caring for patients with chest pain. INTERVENTIONS: Patients were randomly assigned (1:1) by an electronic, web based system to shared decision making facilitated by a decision aid or to usual care. The primary outcome, selected by patient and caregiver advisers, was patient knowledge of their risk for acute coronary syndrome and options for care; secondary outcomes were involvement in the decision to be admitted, proportion of patients admitted for cardiac testing, and the 30 day rate of major adverse cardiac events. RESULTS: Compared with the usual care arm, patients in the decision aid arm had greater knowledge of their risk for acute coronary syndrome and options for care (questions correct: decision aid, 4.2 v usual care, 3.6; mean difference 0.66, 95% confidence interval 0.46 to 0.86), were more involved in the decision (observing patient involvement scores: decision aid, 18.3 v usual care, 7.9; 10.3, 9.1 to 11.5), and less frequently decided with their clinician to be admitted for cardiac testing (decision aid, 37% v usual care, 52%; absolute difference 15%; P CONCLUSIONS: Use of a decision aid in patients at low risk for acute coronary syndrome increased patient knowledge about their risk, increased engagement, and safely decreased the rate of admission to an observation unit for cardiac testing.Trial registration ClinicalTrials.gov NCT01969240

Analytical modeling of silicon microring and microdisk modulators with electrical and optical dynamics

We propose an analytical time-domain model for microring and microdisk modulators, which considers both their electrical and optical properties. Theory of the dynamics of microring/microdisk is discussed, and general solutions to the transfer matrix representation are presented. Both static and dynamic predictions from the model are compared to measurement results to demonstrate the accuracy of our model. Static predictions and measurements are presented for power and phase responses, whereas dynamic predictions and measurements are presented for small-signal and large-signal operations. The model verifies that the chirping and modulation bandwidth of the modulators depend on the detuning state. Finally, the accuracy and scalability of several techniques employed in the model are discussed

Contrasting the mechanical and metallurgical properties of laser welded and gas tungsten arc welded S500MC steel

S500MC steel is a grade of high-strength low-alloy steel (HSLA) which is widely used in the automotive industry and for agricultural machinery and equipment. Considering properties of this alloy, selection of the welding process and parameters becomes essential to ensure that HSLA assemblies meet specific service requirements. In this work, mechanical and metallurgical properties of S500MC steel produced by autogenous laser beam welding (LBW) and automatic gas tungsten arc welding (GTAW) were compared. Tensile testing, metallography, hardness testing, and fractographic analysis were performed on the welded specimens, revealing that the heat input by these welding processes caused significant microstructural changes within the joints. In LBW samples, the heat input about 10 times lower than that in GTAW produced a finer microstructure, narrower fusion zone width, and smaller heat-affected zone. All fractures of the GTAW specimens occurred in the base metal, while all fractures of the LBW specimens occurred in the weld zone, both regardless of the heat input. GTAW joints exhibited higher mechanical properties (even higher than those obtained in the base metal) as compared to LBW joints