Scoliosis Follow-Up Using Noninvasive Trunk Surface Acquisition

Adolescent idiopathic scoliosis (AIS) is a musculoskeletal pathology. It is a complex spinal curvature in a 3-D space that also affects the appearance of the trunk. The clinical follow-up of AIS is decisive for its management. Currently, the Cobb angle, which is measured from full spine radiography, is the most common indicator of the scoliosis progression. However, cumulative exposure to X-rays radiation increases the risk for certain cancers. Thus, a noninvasive method for the identification of the scoliosis progression from trunk shape analysis would be helpful. In this study, a statistical model is built from a set of healthy subjects using independent component analysis and genetic algorithm. Based on this model, a representation of each scoliotic trunk from a set of AIS patients is computed and the difference between two successive acquisitions is used to determine if the scoliosis has progressed or not. This study was conducted on 58 subjects comprising 28 healthy subjects and 30 AIS patients who had trunk surface acquisitions in upright standing posture. The model detects 93% of the progressive cases and 80% of the nonprogressive cases. Thus, the rate of false negatives, representing the proportion of undetected progressions, is very low, only 7%. This study shows that it is possible to perform a scoliotic patient's follow-up using 3-D trunk image analysis, which is based on a noninvasive acquisition technique.

New Terms of Envatment

The argument against skepticism relying on content externalism, which was made famous by Hilary Putnam, has been considered inconclusive by many philosophers. However, some believe that this argument has precluded the possibility of skeptical hypotheses. These hypotheses typically are fictional scenarios where a deceptive power makes your experiences indistinguishable from those you would have if you were not in such a scenario, making most of your justified belief false. Some philosophers, such as Anthony Brueckner and Jon Altschul, have taken this problem seriously and, in response to Putnam, have developed an alternative to the argument from ignorance: the piecemeal fashion strategy. I wish to defend, contra Brueckner and Altschul, the idea that some skeptical hypotheses remain untouched by content externalism, making the piecemeal fashion strategy obsolete.

Discours des plaignantes/victimes : distinction et caractérisation entre les fausses et les vraies allégations de crimes violents

Rapport de stage présenté à la Faculté des arts et des sciences en vue de l’obtention du grade de Maîtrise en criminologie option analyse

Traité de pensée magique pour jeunes adolescents

Au cours de ce texte, je présente d’abord le contenu du livre de Pierre Morency et de Valérie Fontaine, Demande et reçois, chapitre par chapitre. À l’aide d’une série d’affirmations fallacieuses, l’auteur tente de convaincre les jeunes adolescents qu’ils peuvent obtenir tout ce qu’ils désirent. Comment? Il suffit de le demander en évitant de douter, et surtout de laisser de côté tout esprit critique. La deuxième partie comporte six réflexions supplémentaires sur le contenu de ce livre, dont certaines à connotation éthique.