Prédiction des performances des élèves à l'aide de la Classification Évidentielle

Education is necessary to improve people's lives by making them more productive. For this, education systems need innovative ways to improve the quality of education in order to reduce the failure rate and improve student performance. In this context, Morocco has implemented an educational model through the 2015-2030 strategic vision, which promotes the strengthening of the integration of information and communication technologies in the promotion of learning quality. Work has exploded in education systems as it helps analyze and predict student performance so that action can be taken in advance. So, the ability to predict student performance is very important to improve their teaching skills. In this article, a set of data was considered for the prediction and classification of students' academic performance, using a classification algorithm based on the imprecision under the framework of belief function theory and which generalizes the notion of fuzzy partition. It is part of machine learning.L’éducation est nécessaire pour améliorer la vie des individus en la rendant plus productive. Pour cela les systèmes éducatifs ont besoin de moyens innovants pour améliorer la qualité de l’éducation afin de réduire le taux d’échec et améliorer la performance des élèves. Dans ce contexte, le Maroc a mis en place un modèle pédagogique à travers la vision stratégique 2015-2030, qui favorise le renforcement de l'intégration des technologies de l'information et de la communication dans la promotion de la qualité des apprentissages. Des travaux de recherches ont explosé dans les systèmes éducatifs car elle permet d'analyser et de prédire les performances des élèves afin que des mesures puissent être prises à l'avance. Alors, la capacité de prédire la performance des élèves est très importante pour améliorer leurs compétences pédagogiques. Dans cet article, un ensemble de données a été considéré pour la prédiction et la classification des performances académiques des élèves, à l'aide d’un algorithme de classification basée sur la notion d’imprécision sous le cadre de la théorie des fonctions de croyance et qui généralise la notion de la partition floue. Il fait partie de l’apprentissage automatique

Dislocation of temporo-mandibular joint - an uncommon circumstance of occurrence: vaginal delivery

Dislocation of temporo-mandibular joint (TMJ) is an infrequent disease but still spectacular. This disease consists of a permanent, to some extent complete disruption of the temporo-mandibular joint. These dislocations often occur in a context of yawning, and less frequently after a burst of laughing or relatively mild facial trauma (slap, punch on the chin). We report a case of TMJ occurring in an uncommon circumstance: vaginal delivery. A woman aged 24-years with no special past medical history; primipara was admitted in the Department of Maternity of the University Hospital Hassan II of Fez for an imminent delivery of a twin pregnancy. Ten minutes after admission, the patient delivered vaginally with episiotomy. She gave birth to twins weighing 2800g and 2400g. During labour, and due to efforts of crying, the patient developed a sudden and immediate loss of function of the temporo-mandibular joint, with difficulty of speaking, the mouth permanently opened and with the chin lowered and thrown forward. The examination found an empty glenoid fossa of the temporo-mandibular joint in both sides. The diagnosis of dislocation of the TMJ was established. A CT scan of facial bones was done, objectifying a bilateral dislocation of TMJ. The reduction of this dislocation was performed in the operating room under sedation

Classification des trajectoires de vehicules en virage par c-moyenne évidentielle

Dans cet article, nous introduisons une version de l’algorithme C-moyenne évidentielle (ECM). Ce dernier généralise le concept de la partition nette, floue et probabiliste. L’algorithme est appliqué à la classification des trajectoires expérimentales collectées à partir d’un véhicule instrumenté et d’une configuration de virage donnée. La trajectoire est la résultante des interactions du système appelé Véhicule-Infrastructure-Conducteur (V-I-C). Les résultats de la classification sont comparés avec ceux obtenus par la méthode C-moyenne classique. Le test sur des données expérimentales réelles a montré l’intérêt majeur de cette méthode pour la classification des trajectoires de véhicules

Impaired Cognitive Functioning in Patients with Tyrosinemia Type I Receiving Nitisinone

ObjectiveTo examine cognitive functioning in patients with tyrosinemia type I treated with nitisinone and a protein-restricted diet.Study designWe performed a cross-sectional study to establish cognitive functioning in children with tyrosinemia type I compared with their unaffected siblings. Intelligence was measured using age-appropriate Wechsler Scales. To assess cognitive development over time, we retrieved sequential IQ scores in a single-center subset of patients. We also evaluated whether plasma phenylalanine and tyrosine levels during treatment was correlated with cognitive development.ResultsAverage total IQ score in 10 patients with tyrosinemia type I receiving nitisinone was significantly lower compared with their unaffected siblings (71 ± 13 vs 91 ± 13; P = .008). Both verbal and performance IQ subscores differed (77 ± 14 vs 95 ± 11; P < .05 and 70 ± 11 vs 87 ± 15; P < .05, respectively). Repeated IQ measurements in a single-center subset of 5 patients revealed a decline in average IQ score over time, from 96 ± 15 to 69 ± 11 (P < .001). No significant association was found between IQ score and either plasma tyrosine or phenylalanine concentration.ConclusionPatients with tyrosinemia type I treated with nitisinone are at risk for impaired cognitive function despite a protein-restricted diet

Chiari’s Network as a Cause of Fetal and Neonatal Pathology

Chiari’s network is a remnant of the eustachian valve located in the right atrium. Incomplete involution of the fetal sinus venosus valves results in “redundant” Chiari’s network, which may compromise cardiovascular function. This report describes a case with the novel finding of prenatal compromise due to redundant Chiari’s network and an uncommon case with significant postnatal symptoms. In both cases, the symptoms (fetal hydrops and postnatal cyanosis) resolved spontaneously. The variety of cardiovascular pathologies described in the literature is believed to be associated with persistence of a Chiari network. Knowledge about this not always harmless structure is important for perinatologists, pediatricians, and pediatric cardiologists alike. The clinical importance of this rare pathology is that prenatal counseling may anticipate a generally positive outcome and that surgical intervention generally should be avoided

With the support of the Italian Development Cooperation

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Impaired Cognitive Functioning in Patients with Tyrosinemia Type I Receiving Nitisinone

Objective To examine cognitive functioning in patients with tyrosinemia type I treated with nitisinone and a protein-restricted diet. Study design We performed a cross-sectional study to establish cognitive functioning in children with tyrosinemia type I compared with their unaffected siblings. Intelligence was measured using age-appropriate Wechsler Scales. To assess cognitive development over time, we retrieved sequential IQ scores in a single-center subset of patients. We also evaluated whether plasma phenylalanine and tyrosine levels during treatment was correlated with cognitive development. Results Average total IQ score in 10 patients with tyrosinemia type I receiving nitisinone was significantly lower compared with their unaffected siblings (71 +/- 13 vs 91 +/- 13; P =.008). Both verbal and performance IQ subscores differed (77 +/- 14 vs 95 +/- 11; P Conclusion Patients with tyrosinemia type I treated with nitisinone are at risk for impaired cognitive function despite a protein-restricted diet