Driver Identification Using Statistical Features of Motor Activity and Genetic Algorithms.

Driver identification refers to the process whose primary purpose is identifying the person behind the steering wheel using collected information about the driver him/herself. The constant monitoring of drivers through sensors generates great benefits in advanced driver assistance systems (ADAS), to learn more about the behavior of road users. Currently, there are many research works that address the subject in search of creating intelligent models that help to identify vehicle users in an efficient and objective way. However, the different methodologies proposed to create these models are based on data generated from sensors that include different vehicle brands on routes established in real environments, which, although they provide very important information for different purposes, in the case of driver identification, there may be a certain degree of bias due to the different situations in which the route environment may change. The proposed method seeks to intelligently and objectively select the most outstanding statistical features from motor activity generated in the main elements of the vehicle with genetic algorithms for driver identification, this process being newer than those established by the state-of-the-art. The results obtained from the proposal were an accuracy of 90.74% to identify two drivers and 62% for four, using a Random Forest Classifier (RFC). With this, it can be concluded that a comprehensive selection of features can greatly optimize the identification of drivers.

Asociación entre estado nutricional, estilo de vida y estrés académico en estudiantes universitarios: Un caso de estudio / Association between nutritional status, lifestyle and academic stress in undergraduate students: A case study

Introducción: Los estudiantes universitarios se encuentran en una etapa de la vida de gran importancia, ya que, es aquí cuando generalmente se consolidan los estilos de vida, además, se sabe que el estrés puede incidir en los hábitos alimentarios y las conductas asociadas a estos. Objetivo: Evaluar la asociación entre estado nutricional, estilos de vida y estrés académico en estudiantes universitarios. Materiales y métodos: Estudio transversal analítico. Se evaluó el estado nutricional haciendo uso del método de bioimpedancia tetrapolar y bajo la consideración de los siguientes parámetros: IMC, masa grasa, grasa visceral y ángulo de fase. Resultados: Los resultados señalan que no existe relación estadísticamente significativa entre el estrés y el IMC (r=0,077; p= 0,265), masa grasa (r= 0,124; p= 0,073), grasa visceral (r= 0,055; p= 0,430) y el ángulo de fase (r= -0,095;p= 0,167). Tampoco existe una relación estadísticamente significativa entre las dimensiones del estrés académico y el IMC, masa grasa, grasa visceral y el ángulo de fase (p> 0,05).Pero sí se observa que, el estilo de vida tiene relación con la masa grasa (r= -0,237; p= 0,001) y la grasa visceral (r= -0,185; p= 0,007), en ambos casos la relación es inversa-mente proporcional. Conclusión: El estilo de vida guarda relación directa con el estado nutricional, y significativa e inversamente proporcional con la masa grasa y grasa visceral. En cuanto a los hábitos alimentarios y actividad física, existe relación significativa e inversamente proporcional con el IMC, masa grasa y grasa visceral. Además, la recreación y manejo del tiempo libre tiene una relación significativa e inversamente proporcional con masa grasa, de la misma forma el autocuidado y cui-dado médico con la grasa visceral. (AU)

Introduction: University students are in a stage of life of great importance, since, it is here when lifestyles are generally consolidated, in addition, it is known that stress can have an impact on eating habits and behaviors associated with these. Objective: To evaluate the association between nutritional status, lifestyles and academic stress in university students. Materials and methods: Analytical cross-sectional study. Nutritional status was evaluated using the tetrapolar bioimpedance method and under consideration of the following parameters: BMI, fat mass, visceral fat and phase angle. Results: The results indicate that there is no statistically significant relationship between stress and BMI (r= 0.077; p=0.265), fat mass (r= 0.124; p= 0.073), visceral fat (r= 0.055; p= 0.430) and phase angle (r= -0.095; p= 0.167). There is also no statistically significant relationship between the dimensions of academic stress and BMI, fat mass, visceral fat and phase angle (p> 0.05). However, it is observed that lifestyle has a relationship with fat mass (r= -0.237; p=0.001) and visceral fat (r= -0.185; p= 0.007), in both cases the relationship is inversely proportional. Conclusion: Lifestyle is directly related to nutritional status, and significantly and inversely proportional to fat massand visceral fat. As for eating habits and physical activity, there is a significant and inversely proportional relationship with BMI, fat mass and visceral fat. In addition, recreation and leisure time management have a significant and inversely proportional relationship with fat mass, as well as self-care and medical care with visceral fat. (AU)

Resiliencia como factor determinante para la satisfacción con la vida en estudiantes universitarios / Resilience as a factor determining satisfaction with life among university students

Introducción: Cada día ganan más importancia en la investigación educativa la resiliencia y la satisfacción con la vida de los estudiantes universitarios por la necesidad de tomar medidas para mejorar estas capacidades. Objetivo: Identificar el nivel de resiliencia y de satisfacción con la vida de los estudiantes de la universidad estatal peruana de San Agustín, Arequipa, ante las situaciones sociales desfavorables. Métodos: Se empleó una muestra de 40 estudiantes universitarios con un rango de edad entre 18 y 36 años. Se utilizaron como instrumentos de investigación la escala de resiliencia de Wagnild y Young y la escala de satisfacción con la vida de Diener, Emmons, Larsen y Griffin. Resultados: Se constató que existe un nivel "medio alto" de resiliencia, que representó el 60 por ciento de la muestra; el nivel "alto", el 30 por ciento; y el nivel "medio", el 10 por ciento. Además, se encontró que hay relación primaria entre el nivel de resiliencia "medio alto" con el nivel de satisfacción "satisfecha". Conclusiones: Los resultados mostraron que existe una relación altamente significativa (p < 0,05) entre el grado de resiliencia y de satisfacción con la vida(AU)

Introduction: The growing importance of resilience and satisfaction with life among university students in educational research results from the need to take measures aimed at improving those capacities. Objective: Determine the level of resilience and satisfaction with life among students from the Peruvian state university of San Agustín, Arequipa, in the face of unfavorable social situations. Methods: The sample was 40 university students aged 18-36 years. The research tools used were Wagnild and Young's resilience scale and Diener, Emmons, Larsen and Griffin's satisfaction with life scale. Results: Resilience values were "medium high" in 60 percent of the sample, "high" in 30 percent and "medium" in 10 percent. A primary relationship was found between the "medium high" resilience level and the "satisfied" level on the satisfaction with life scale. Conclusions: Results show a highly significant relationship (p < 0,05) between the level of resilience and the level of satisfaction with life(AU)