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BACKGROUND In the Mexican population metabolic syndrome (MS) is highly prevalent. It is well documented that regular physical activity (PA) prevents coronary diseases, type 2 diabetes and MS. Most studies of PA have focused on moderate-vigorous leisure-time activity, because it involves higher energy expenditures, increase physical fitness, and decrease the(More)
OBJECTIVES Age-related dementia is a progressive degenerative brain syndrome whose prevalence increases with age. Dementias cause a substantial burden on society and on families who provide informal care. This study aims to review the relevant papers to compare informal care time and costs in different dementias. METHODS A bibliographic search was(More)
BACKGROUND AND PURPOSE To replace digital subtraction angiography (DSA) in carotid stenosis evaluation, noninvasive imaging techniques have to reach a high concordance rate. Our purpose is to compare the concordance rates of contrast-enhanced MR angiography (CEMRA) and CT angiography (CTA) with Doppler ultrasound (DUS) in clinical routine practice. (More)
Nous présentons dans cet article les algorithmes de classica-tion prétopologiques récemment développés [15,14], ainsi que l'introduc-tion d'un nouvel algorithme original. Outre les rappels sur les notions de classication, nous proposons un algorithme de classication exploi-tant la notion de distance basée sur la complexité de Kolmogorov. Nous illustrerons(More)
OBJECTIVE To evaluate the prevalence of weight-loss practices among university students from Tlaxcala, Mexico. METHODS A cross-sectional study of 2,651 university students was conducted. Logistic regression tests were used to estimate the probability of students trying to lose weight and successfully achieving weight loss. RESULTS Nearly 40% of students(More)
Cooperative game theory is a mathematical theory used for modeling negotiation problems between players. In these games, coalition formation is a central concept: for players, it's the problem to be solved for getting a payment as best as they do. In this paper, we focus our attention on the dynamic of coalition formation. Our purpose is to determine which(More)
The eigenvalue equation intervenes in models of infectious disease propagation and could be used as an ally of vaccination campaigns in the actions carried out by health care organizations. The stochastic model based on Page Rank allows to simulate the epidemic spread, where a Like-like infection vector is calculated to help establish efficient vaccination(More)
According to Lev Vvgotsb, individnal's learning is iiifliienced by social interactions uith his environntent. This coilfrvntation ofpoinls of view enables an individiial to evolve during the time. The Vygotsb S theor?, gives a quire iniportant place no! on& ! o social tools as larigiiage, birr also lo iriteructions and r.elations1iips hem:een individnals.(More)