Eventos narrativos significativos en torno a las experiencias de los Mentors en el proyecto ancla de la Pontificia Universidad Javeriana

Este trabajo de investigación tiene como objetivo comprender eventos narrativos significativos de docentes en formación en torno a sus experiencias como Mentors (estudiantes de la Licenciatura en Lenguas Modernas) en el proyecto Ancla de la Pontificia Universidad Javeriana y la significación que éstas tienen en su formación académica y profesional. Ahora bien, este trabajo se deriva de un proyecto de investigación llamado Eventos narrativos significativos de profesores en formación en torno a experiencias de práctica docente en la enseñanza de lenguas extranjeras: huellas desde la autoevaluación, particularmente teniendo en cuenta un contexto y población diferente. Así, pretende identificar y caracterizar los eventos narrativos del Mentor durante su participación en el proyecto teniendo en cuenta aspectos pedagógicos y emocionales. Se trata de un estudio de carácter cualitativo, de tipo descriptivo, donde los instrumentos empleados fueron el grupo focal y el análisis de un documento de reflexión que los participantes elaboraron para el proyecto, denominado Historia en imágenes. Por otro lado, algunos conceptos teóricos utilizados en este trabajo de investigación fueron principalmente arquitecturas de práctica, andamiaje, comunidades de práctica y tutoría entre pares. Como parte de los resultados, algunos de los aspectos más destacados por los Mentors son la motivación, interés, compromiso, experiencias positivas, reciprocidad y satisfacción dentro de los aspectos emocionales, mientras que el uso de las TIC, identificación de necesidades, identificación de estilos de aprendizaje están dentro de los aspectos pedagógicos. Teniendo en cuenta lo anterior se puede decir que Ancla se ha consolidado como una comunidad de práctica la cual enriquece la formación académica y profesional de los Mentors.This research project aims to understand meaningful narrative events of teachers in training around their experiences as Mentors (students of Modern Languages title) in the Ancla project of the Pontifical Xavierian University and the impact that those experiences have on their academic and professional training. It must be clarified that this is stems from a research project called Eventos narrativos significativos de profesores en formación en torno a experiencias de práctica docente en la enseñanza de lenguas extranjeras: huellas desde la autoevaluación, particularly taking into account a different context and population. Thus, this aims to identify and characterize Mentor narrative events during their participation in the project taking into account educational and emotional aspects. This paper is about a study of descriptive qualitative nature, where a focus group and an analysis of a reflective paper produced by participants for the Ancla project were the main instruments, called Historia en imagénes. On the other hand, some theoretical concepts used in this research were mainly practice architectures, scaffolding, communities of practice and peer tutoring. In light to some of the study results, some outstanding aspects, according to Mentors, such as motivation, interest, commitment, positive experiences, reciprocity and satisfaction are part of the emotional aspects, while the use of ICT, identification of needs and identification of learning styles are part of the pedagogical ones. Given the above, it can be said that Ancla has established itself as a community of practice which enriches the mentor s academic and professional training.Licenciado (a) en Lenguas ModernasPregrad

Combining Multi-Agent Systems and Wireless Sensor Networks for Monitoring Crop Irrigation

[EN]Monitoring mechanisms that ensure efficient crop growth are essential on many farms, especially in certain areas of the planet where water is scarce. Most farmers must assume the high cost of the required equipment in order to be able to streamline natural resources on their farms. Considering that many farmers cannot afford to install this equipment, it is necessary to look for more effective solutions that would be cheaper to implement. The objective of this study is to build virtual organizations of agents that can communicate between each other while monitoring crops. A low cost sensor architecture allows farmers to monitor and optimize the growth of their crops by streamlining the amount of resources the crops need at every moment. Since the hardware has limited processing and communication capabilities, our approach uses the PANGEA architecture to overcome this limitation. Specifically, we will design a system that is capable of collecting heterogeneous information from its environment, using sensors for temperature, solar radiation, humidity, pH, moisture and wind. A major outcome of our approach is that our solution is able to merge heterogeneous data from sensors and produce a response adapted to the context. In order to validate the proposed system, we present a case study in which farmers are provided with a tool that allows us to monitor the condition of crops on a TV screen using a low cost device.European Commision (EC). Funding H2020/MSCARISE. Project Code: 641794European Commision (EC). Funding FP7/SPE/SME. Project Code: 283638European Commision (EC). Funding FP7/SP1/ENV. Project Code: 28294

Multi-Sensor Information Fusion for Optimizing Electric Bicycle Routes Using a Swarm Intelligence Algorithm

[EN]The use of electric bikes (e-bikes) has grown in popularity, especially in large cities where overcrowding and traffic congestion are common. This paper proposes an intelligent engine management system for e-bikes which uses the information collected from sensors to optimize battery energy and time. The intelligent engine management system consists of a built-in network of sensors in the e-bike, which is used for multi-sensor data fusion; the collected data is analysed and fused and on the basis of this information the system can provide the user with optimal and personalized assistance. The user is given recommendations related to battery consumption, sensors, and other parameters associated with the route travelled, such as duration, speed, or variation in altitude. To provide a user with these recommendations, artificial neural networks are used to estimate speed and consumption for each of the segments of a route. These estimates are incorporated into evolutionary algorithms in order to make the optimizations. A comparative analysis of the results obtained has been conducted for when routes were travelled with and without the optimization system. From the experiments, it is evident that the use of an engine management system results in significant energy and time savings. Moreover, user satisfaction increases as the level of assistance adapts to user behavior and the characteristics of the route

An Ensemble Framework Coping with Instability in the Gene Selection Process

[EN] This paper proposes an ensemble framework for gene selection, which is aimed at addressing instability problems presented in the gene filtering task. The complex process of gene selection from gene expression data faces different instability problems from the informative gene subsets found by different filter methods. This makes the identification of significant genes by the experts difficult. The instability of results can come from filter methods, gene classifier methods, different datasets of the same disease and multiple valid groups of biomarkers. Even though there is a wide number of proposals, the complexity imposed by this problem remains a challenge today. This work proposes a framework involving five stages of gene filtering to discover biomarkers for diagnosis and classification tasks. This framework performs a process of stable feature selection, facing the problems above and, thus, providing a more suitable and reliable solution for clinical and research purposes. Our proposal involves a process of multistage gene filtering, in which several ensemble strategies for gene selection were added in such a way that different classifiers simultaneously assess gene subsets to face instability. Firstly, we apply an ensemble of recent gene selection methods to obtain diversity in the genes found (stability according to filter methods). Next, we apply an ensemble of known classifiers to filter genes relevant to all classifiers at a time (stability according to classification methods). The achieved results were evaluated in two different datasets of the same disease (pancreatic ductal adenocarcinoma), in search of stability according to the disease, for which promising results were achieved

Increasing the Intensity over Time of an Electric-Assist Bike Based on the User and Route: The Bike Becomes the Gym

[EN]Nowadays, many citizens have busy days that make finding time for physical activity difficult. Thus, it is important to provide citizens with tools that allow them to introduce physical activity into their lives as part of the day’s routine. This article proposes an app for an electric pedal-assist-system (PAS) bicycle that increases the pedaling intensity so the bicyclist can achieve higher and higher levels of physical activity. The app includes personalized assist levels that have been adapted to the user’s strength/ability and a profile of the route, segmented according to its slopes. Additionally, a social component motivates interaction and competition between users based on a scoring system that shows the level of their performances. To test the training module, a case study in three different European countries lasted four months and included nine people who traveled 551 routes. The electric PAS bicycle with the app that increases intensity of physical activity shows promise for increasing levels of physical activity as a regular part of the da

Characterization of the localized surface chemical activity of Ti-Mo and Ti-Ta alloys for biomedical applications using scanning electrochemical microscopy

Scanning electrochemical microscopy (SECM) was employed for in situ characterization of surface chemical activity of various Ti-Mo and Ti-Ta alloys for biomedical application. In this work the local differences in surface reactivity for different Ti-Mo and Ti-Ta alloys were analyzed when they were polarized in 0.1 M NaCl solution and in Ringer’s physiological solution using SECM, and results compared to those for the unbiased samples. The analysis of the shape of the approach curves obtained for the Ti-Mo and Ti-Ta alloys shows a different behaviour to be distinguished depending on the nature of the alloying element. There are also differences among the various Ti-Ta alloys tested, that cause changes in the shape of the approach curves with the value of the polarization applied to the substrate, defining a transition potential between -0.30 and -0.40 V vs. Ag/AgCl/KCl(3M) for most of the systems under study. Furthermore, from the line scans and array scans, a change in reactivity of the surface has been observed corresponding to the activation of the localized sites which occurs selectively with the applied potential. SECM is shown to be a powerful technique for the investigation of the surface characteristics of biomaterials in simulated physiological environments

Asociación entre enfermedad de hígado graso no alcohólico y aterosclerosis subclínica

Introduction: non-alcoholic fatty lever disease is linked to atherosclerosis due to the latest´s risk factors. There are also tendencies that affirm that there is a different factor on its pathogeny. The subclinical atherosclerosis is a preventive medicine concept, and looking for it can help finding clues for future irreversible damage.Objective: to determine the association between subclinical atherosclerosis in dyslipidemic patients with non-alcoholic fatty lever disease. Method: a descriptive, cross-sectional study was carried out in a population of 114 dyslipidemic patients with non-alcoholic fatty lever disease in the dyslipoproteinemias consultation at the Surgical Clinical Hospital ¨Hermanos Amejeiras¨ from 2016 to 2019.Results:  mean age was 52.9 ± 12.4 years, with male patients’ predominance. 62 patients showed thickening in the intima-media wider than 1mm in echocardiography, and just 8 patients had atheroma plaque in the carotid artery. The frequency of the altered lipidic profile was due to hypertriglyceridaemia and HDL cholesterol. Conclusions: no link was found between non-alcoholic fatty lever disease and subclinical atherosclerosis. Through the analysis, atherosclerosis was linked to variables as age and family history of ischemic heart disease. There is no association between subclinical atherosclerosis and the degree of progression in the non-alcoholic fatty lever disease given by the APRI index.Introducción: la enfermedad de hígado graso no alcohólico está asociada con la aterosclerosis como consecuencia de los factores de riesgo que la acompañan. Hay tendencias que apoyan que es un factor independiente en su patogenia. La aterosclerosis subclínica es un concepto de medicina preventiva y su búsqueda permite marcar la aparición futura de daños irreversibles. Objetivo: determinar la asociación de aterosclerosis subclínica en pacientes dislipidémicos con enfermedad de hígado graso no alcohólico. Método: se realizó un estudio descriptivo, transversal en 114 pacientes dislipidémicos con enfermedad de hígado graso no alcohólico de la consulta de dislipoproteinemias en el Hospital Clínico Quirúrgico “Hermanos Ameijeiras” en el período comprendido entre los años 2016 al 2019.Resultados: la media de edad fue de 52,9 ± 12,4 años con predominio del sexo masculino. En ecocardiografía, 62 pacientes con enfermedad de hígado graso no alcohólico presentaron aumento del grosor de la íntima media mayor de 1mm y solo 8 pacientes tenían placa de ateroma de la arteria carotídea. La frecuencia del perfil lipídico alterado fue a expensas de hipertrigliceridemia y de la HDL colesterol.Conclusiones: no existió asociación entre la enfermedad de hígado graso no alcohólico con aterosclerosis subclínica; mediante el análisis multivariado se encontró asociación franca de la aterosclerosis subclínica con variables como la edad y el antecedente familiar de cardiopatía isquémica. No hay asociación de aterosclerosis subclínica con el grado de progresión de enfermedad de hígado graso no alcohólico dado por el índice de APRI

Links between non-alcoholic fatty lever disease and subclinical atherosclerosis

Introduction: non-alcoholic fatty lever disease is linked to atherosclerosis due to the latest´s risk factors. There are also tendencies that affirm that there is a different factor on its pathogeny. The subclinical atherosclerosis is a preventive medicine concept, and looking for it can help finding clues for future irreversible damage. Objective: to determine the association between subclinical atherosclerosis in dyslipidemic patients with non-alcoholic fatty lever disease. Method: a descriptive, cross-sectional study was carried out in a population of 114 dyslipidemic patients with non-alcoholic fatty lever disease in the dyslipoproteinemias consultation at the Surgical Clinical Hospital ¨Hermanos Amejeiras¨ from 2016 to 2019. Results:  mean age was 52.9 ± 12.4 years, with male patients’ predominance. 62 patients showed thickening in the intima-media wider than 1mm in echocardiography, and just 8 patients had atheroma plaque in the carotid artery. The frequency of the altered lipidic profile was due to hypertriglyceridaemia and HDL cholesterol. Conclusions: no link was found between non-alcoholic fatty lever disease and subclinical atherosclerosis. Through the analysis, atherosclerosis was linked to variables as age and family history of ischemic heart disease. There is no association between subclinical atherosclerosis and the degree of progression in the non-alcoholic fatty lever disease given by the APRI index

Persistencia del conducto arterioso. Informe de un caso

Introducción: la persistencia del conducto arterioso es la cardiopatía congénita más frecuente en recién nacidos, por lo que compromete la vida de estos pacientes. Presentación del caso: recién nacido del sexo femenino de 49 minutos de vida. Hijo de madre de 33 años con antecedentes patológicos referidos de hipertensión arterial y abuela materna con diabetes mellitus. Antecedentes connatales de parto distócico por desproporción cefalopélvica, término 41.3 semanas de edad gestacional. Con peso de 5100 gramos, presentación cefálica, líquido amniótico claro, TRM (tiempo de ruptura de membranas 4 horas). Ingresa en la sala de cuidados especiales perinatales del Hospital Ginecobstétrico Fe del Valle Ramos con el diagnóstico de Distress Respiratorio, donde se realizaron complementarios y valoración integral multidisciplinaria por especialistas en cardiología y genética. Diagnosticándose por especialista en cardiología foramen oval permeable, CIA (2.1mm), CIV (tipo C), y PCA con repercusión hemodinámica.Conclusiones: es importante realizar desde un inicio el diagnóstico adecuado del tipo de cardiopatía congénita que pudiera presentarse en la primera infancia, para poder guiar a los padres en el conocimiento de la enfermedad, sobre todo por las implicaciones clínicas que pueden aparecer con repercusión física, nutricional y psicológica. El protocolo de actuación debe ir dirigido a mejorar el estado nutricional del paciente, prevenir las infecciones, culminando con condiciones favorables de supervivencia y autonomía de los padres para los cuidados en domicili