Troubles vestibulaires : Améliorer la prise en charge des patients par les physiothérapeutes

Dans le cadre du cours PHT-6123 : Travail d'intégrationIntroduction: La physiothérapie est une approche thérapeutique pour le traitement de plusieurs troubles d’origine vestibulaire. Or, au Québec, la prise en charge de la clientèle vestibulaire demeure sous-optimale, car ce domaine est encore en essor et demeure méconnu, tant par les patients que les professionnels de la santé. Objectif: Contribuer à améliorer la prise en charge et l’orientation des patients atteints de troubles vestibulaires par les physiothérapeutes non formés spécifiquement pour cette clientèle en développant un outil clinique d’aide à la décision. Méthodologie : Scoping review avec recension de la littérature scientifique (Medline, Embase, CINAHL, Cochrane) et grise (Google Scholar, Atrium, sites web professionnels et universitaires). Entrevues semi-dirigées auprès de physiothérapeutes spécialisés en rééducation vestibulaire (n=4). Résultats : Les étourdissements et les troubles d’équilibre peuvent être causés par de multiples pathologies, dont l’origine peut être vestibulaire ou multi-systémique. Grâce à une évaluation clinique raisonnée, les physiothérapeutes peuvent orienter le processus diagnostic et la prise en charge des patients présentant des symptômes vestibulaires. Les évidences démontrent que la physiothérapie s’avère efficace pour traiter les vertiges positionnels paroxystiques bénins et les hypofonctions vestibulaires. Les physiothérapeutes spécialistes recommandent aux non-spécialistes une intervention qui respecte les limites de leurs compétences et reconnaissent l’importance de référer de façon appropriée les patients. À ces fins, un outil d’aide à la décision qui illustre le raisonnement clinique a été développé. Conclusion : Le renforcement du rôle de la physiothérapie dans la prise en charge des patients présentant un trouble vestibulaire permettrait d’améliorer la qualité des soins offerts

The Effects of Latency and Jitter on a First Person Shooter: Team Fortress 2

This paper describes the effects of latency and jitter on the enjoyment and performance of playing the online multiplayer first person shooter game Team Fortress 2. We ran a study to measure the performance of the player and the enjoyment of the game under various latency and jitter conditions. We analyzed data gathered from the game and questionnaires to find correlations for player performance or enjoyment at latency and high jitter versus just high latency. Our results suggest that higher latency makes a difference in gameplay, but there is no correlation for players performing better or worse with latency and jitter compared to just high latency

A feasibility study on the effect of an Al-C master alloy on the microstructure and mechanical properties of the B319 cast aluminum alloy

Aluminum alloys have a high strength to weight ratio (x2 of most steel alloys) and are therefore excellent candidates for use in dynamic weight-sensitive designs (e.g. the aerospace, marine, and automotive industries). The B319 aluminum alloy is currently used in complex cast automotive parts, such as the engine block or cylinder head, due to its excellent castability and heat treatability. Improvements to the B319 alloy’s strength and casting characteristics can lead to further weight reduction of parts, which translates to improved vehicle efficiency, lower cost, and reduced green house gas emissions. Grain refinement is a method of increasing material properties without significantly altering the parent alloy. However, production of well dispersed and consistent master alloys to achieve effective grain refinement remains an industrial challenge. This research investigated the effectiveness of a novel Aluminum(Al)-Carbon(C) master alloy for grain refinement of the B319 alloy. The master alloys were synthesized via the spark plasma sintering (SPS) powder metallurgy process, and subsequently characterized by microstructural analysis. Casting experiments were then carried out with the B319 alloy, and the resultant as- cast materials were analyzed. The results showed that a well dispersed Al-C master alloy could be synthesized by SPS, with carbon black powder equally distributed at the aluminum particle boundaries. The carbon was seen to diffuse at the Al-C interface at sintering temperatures of <500°C. Low concentration (1wt% C) and high concentration (2wt% C) master alloys were added to B319 alloy castings at 0.03wt% total C content. Thermal analysis and microscopy showed no change in the solidification reactions, solidification profiles, or microstructure of the B319 alloy after master alloy addition. Grain size evaluation showed a maximum grain size decrease of 17% when a high concentration master alloy was used. Mechanical and fluidity tests further showed either no improvement or marginal property decreases associated with Al-C addition.Applied Science, Faculty ofEngineering, School of (Okanagan)Graduat

On Atomicity Enforcement in Concurrent Software via Discrete Event Systems Theory

Atomicity violations are among the most severe and prevalent defects in concurrent software. Numerous algorithms and tools have been developed to detect atomicity bugs, but few solutions exist to automatically fix such bugs. Some existing solutions add locks to enforce atomicity, which can introduce deadlocks into programs. Our recent work avoids deadlock bugs in concurrent programs by adding control logic synthesized using Discrete Event Systems theory. In this paper, we extend this control framework to address single-variable atomicity violation bugs. We use the same class of Petri net models as in our prior work to capture program semantics, and handle atomicity violations by control specifications in the form of linear inequalities. We propose two methodologies for synthesizing control logic that enforces these linear inequalities without causing deadlocks; the resulting control logic is embedded into the program's source code by program instrumentation. These results extend the scope of concurrency bugs in software systems that can be handled by techniques from control engineering. Case studies involving two real Java programs demonstrate our solution procedure