Modelado, simulación y representaciones mentales: una propuesta metacognitiva para el análisis del movimiento 3D de proyectiles

This article presents mathematical modeling and computational simulation as an alternative and metacognitive strategy for the development of thinking skills and understanding of physical phenomena through mediation of superior mental representations, incorporating a simulation with randomness of physical parameters in the 3D movement of projectiles as a relevant didactic resource in laboratory practices with engineering students.Este artículo presenta el modelado matemático y simulación computacional como una alternativa y estrategia metacognitiva para el desarrollo de habilidades de pensamiento y comprensión de fenómenos físicos por medio de representaciones mentales de nivel superior, incorporando una simulación con aleatoriedad de parámetros físicos en el movimiento 3D de proyectiles como un recurso didáctico pertinente en prácticas de laboratorio con estudiantes de ingenierías

Diseño de una herramienta que permita identificar los riesgos laborales que se puedan presentar en la empresa La Fleche & Cía. S.A.S., en la ciudad de Bogotá, para el segundo semestre del año 2022.

Este proyecto de grado es un estudio que se aplica a la microempresa La Fleche & Cía. S.A.S. ubicada en la ciudad de Bogotá D.C., cuya actividad principal son las Actividades Jurídicas, donde permitirá identificar a profundidad los diferentes peligros y riesgos laborales que se pueden presentar dentro de la empresa, determinando las condiciones en las cuales se realizan las funciones en cada cargo que tiene la empresa. Esta investigación bajo su objetivo general de diseñar una herramienta que permita identificar los riesgos laborales que se puedan presentar en la empresa La Fleche & Cía. S.A.S. teniendo en cuenta lo establecido por el Ministerio de Trabajo mediante el Decreto 1072 de 2015, basa sus estudios e investigación de acuerdo a los resultados obtenidos a través de la metodología, método de recolección como son las encuestas realizadas a los trabajadores de las distintas áreas laborales de la empresa, la cual fue aplicada electrónicamente; en la cual los trabajadores expresaron sus opiniones, fortalezas y deficiencias sobre cada uno de sus entornos de trabajo. La intención principal de este proyecto es que la empresa La Fleche & Cía. S.A.S. conozca de manera clara y efectiva cuales son los peligros y riesgos laborales a los cuales están expuestos sus empleados durante la jornada laboral como pueden ser: riesgos físicos, químicos, ergonómicos, psicosociales y ambientales; de este modo poder analizar las posibles consecuencias que se puedan presentar para brindar un conocimiento más específico de cada cargo a la Gerencia la cual es la encargada de generar, promover la protección y atención integral del trabajo sano y seguro ofreciendo una garantía a los trabajadores.This degree project is a study that is applied to the microenterprise La Fleche & Cía. S.A.S. located in the city of Bogotá D.C., whose main activity is Legal Activities, where it will allow an in-depth identification of the different occupational hazards and risks that may arise within the company, determining the conditions in which the functions are carried out in each position that has the company. This research, under its general objective of designing a tool that allows the identification of occupational risks that may arise in the company La Fleche & Cía. S.A.S. Taking into account what is established by the Ministry of Labor through Decree 1072 of 2015, it bases its studies and research according to the results obtained through the methodology, collection method such as the surveys carried out on workers in the different work areas. of the company, which was applied electronically; in which the workers expressed their opinions, strengths and deficiencies about each of their work environments. The main intention of this project is that the company La Fleche & Cía. S.A.S. Know clearly and effectively what are the occupational hazards and risks to which your employees are exposed during the working day, such as: physical, chemical, ergonomic, psychosocial and environmental risks; In this way, we can analyze the possible consequences that may arise to provide a more specific knowledge of each position to Management, which is in charge of generating, promoting the protection and comprehensive care of healthy and safe work, offering a guarantee to workers

ECG study in practical labs for biomedical engineering training

Non-invasive biomedical measurements are one of the most important technological contributions whitin the biomedical engineering field. On this paper, a dual laboratory session student oriented is designed to simulate and implement a cardial signal monitor. During the first session, ORCAD PSpice software is used to simulate the whole process. The students can acquire knowledge on the process by configuring and running both the instrumentation amplifier and a passive filter to improve the signal quality. The second session requires from the student basic laboratory skills to use a specific printed circuit board (PCB) to measure its very own cardiac potential. As a result, from this session, the student can visualize the ECG signal acquired directly on the laboratory oscilloscope

Differential Risk of Intracranial Hemorrhage in Patients with Non-valvular Atrial Fibrillation with Usage of Novel Oral Anticoagulantsvs. Warfarin. Systematic Review and Analysis of Subpopulations

Introducción: La anticoagulación en pacientes con fibrilación auricularno valvular previene eventos tromboembólicos con incremento implícitoen el riesgo de complicaciones hemorrágicas, principalmente lahemorragia intracraneana. Métodos: Se realizó una revisión sistemáticade la literatura del periodo 2011-2016 en bases de datos (Pubmed-Embase). Se incluyeron metanálisis, revisiones sistemáticas y ensayosclínicos aleatorizados de las moléculas de interés (apixabán, dabigatrán,edoxabán, rivaroxabán). Se identificaron 512 artículos, tras lo cual seseleccionaron catorce estudios para el análisis final. Resultados: Durantela evaluación comparativa de las cuatro moléculas en diferentes dosisversus warfarina se evidenció una menor prevalencia de hemorragiaintracraneana en pacientes manejados con nuevos anticoagulantes orales;en todos los artículos evaluados, los resultados apoyan su uso. Sinembargo, al evaluar desenlaces hemorrágicos en el caso de subpoblaciones,los resultados parecen tener menor impacto y, en algunos casos, no logranla significancia estadística y se encontró reducción o desaparición delbeneficio. Conclusiones: Los resultados pueden aportar herramientas deutilidad que apoyarían al clínico en la toma de decisiones acerca de laelección del tipo de anticoagulante en escenarios clínicos específicos.1-9Introduction: Patients with non-valvular atrial fibrillationrequire anticoagulation therapy for prevention ofthromboembolic events. The safest type of anticoagulationtherapy regarding intracranial hemorrhage has not beenestablished yet. Methods: We conducted a systematicreview of literature in the time period 2011-2016in databases (PubMed-EMBASE). We included meta-analysis, systematic reviews and randomized clinical trialsaddressing the molecules of interest (apixaban, dabigatran,edoxaban, rivaroxaban). We identified 512 articles, afterwhich 14 studies were selected for the final analysis.Results: Through comparative evaluation of the fourmolecules in different doses versus warfarin, we found adecrease in intracranial hemorrhage in patients on therapywith novel anticoagulants, results support their usage inall of the articles included for analysis. However, whenevaluating hemorrhage-related outcomes in different sub-populations, the results seem to have a smaller impact andin some cases they do not reach statistical significance,also, the benefit was reduced or disappeared. Conclusions:The results from this review can serve as useful tools inorder to support physicians in the decision-making processregarding choice of the right type of anticoagulant therapyin specific clinical situations

Evaluación en época seca de ecosistemas acuáticos y terrestres: componentes de vegetación y faunación. Sector Centro Administrativo PNN El Tuparro (Cumaribo, Vichada)

La asignatura Ecología Regional Continental tiene como objetivo el análisis de los procesos ecológicos a escala de paisaje y bioma. A lo largo de su existencia dentro del programa curricular de Biología de la Universidad Nacional de Colombia se han realizado distintos estudios ecológicos en distintas regiones del país, ampliando cada vez más el conocimiento de los estudiantes que toman la asignatura y aportando al conocimiento de zonas poco estudiadas. Durante los últimos periodos, la fase de campo se ha realizado en zonas pertenecientes al Sistema de Parques Nacionales Naturales de Colombia. Es así como se realizó un estudio preliminar durante el segundo semestre de 2010 en el PNN Cueva de Los Guacharos en el departamento del Huila, cumpliendo con el objetivo de una evaluación ecológica rápida a nivel de vegetación y limnología de manera dirigida, además de proyectos de distintos temas sobre aspectos ecológicos de la región. Para este periodo, primer semestre de 2011, la fase de campo se desarrolló en el PNN El Tuparro, ubicado en el departamento del Vichada y se incluyó adicionalmente el componente de faunación. Esta zona del país es poco conocida dado su difícil acceso, por lo que la información obtenida es de gran valor

Impact of COVID-19 on cardiovascular testing in the United States versus the rest of the world

Objectives: This study sought to quantify and compare the decline in volumes of cardiovascular procedures between the United States and non-US institutions during the early phase of the coronavirus disease-2019 (COVID-19) pandemic. Background: The COVID-19 pandemic has disrupted the care of many non-COVID-19 illnesses. Reductions in diagnostic cardiovascular testing around the world have led to concerns over the implications of reduced testing for cardiovascular disease (CVD) morbidity and mortality. Methods: Data were submitted to the INCAPS-COVID (International Atomic Energy Agency Non-Invasive Cardiology Protocols Study of COVID-19), a multinational registry comprising 909 institutions in 108 countries (including 155 facilities in 40 U.S. states), assessing the impact of the COVID-19 pandemic on volumes of diagnostic cardiovascular procedures. Data were obtained for April 2020 and compared with volumes of baseline procedures from March 2019. We compared laboratory characteristics, practices, and procedure volumes between U.S. and non-U.S. facilities and between U.S. geographic regions and identified factors associated with volume reduction in the United States. Results: Reductions in the volumes of procedures in the United States were similar to those in non-U.S. facilities (68% vs. 63%, respectively; p = 0.237), although U.S. facilities reported greater reductions in invasive coronary angiography (69% vs. 53%, respectively; p < 0.001). Significantly more U.S. facilities reported increased use of telehealth and patient screening measures than non-U.S. facilities, such as temperature checks, symptom screenings, and COVID-19 testing. Reductions in volumes of procedures differed between U.S. regions, with larger declines observed in the Northeast (76%) and Midwest (74%) than in the South (62%) and West (44%). Prevalence of COVID-19, staff redeployments, outpatient centers, and urban centers were associated with greater reductions in volume in U.S. facilities in a multivariable analysis. Conclusions: We observed marked reductions in U.S. cardiovascular testing in the early phase of the pandemic and significant variability between U.S. regions. The association between reductions of volumes and COVID-19 prevalence in the United States highlighted the need for proactive efforts to maintain access to cardiovascular testing in areas most affected by outbreaks of COVID-19 infection

Ciencia Odontológica 2.0

Libro que muestra avances de la Investigación Odontológica en MéxicoEs para los integrantes de la Red de Investigación en Estomatología (RIE) una enorme alegría presentar el segundo de una serie de 6 libros sobre casos clínicos, revisiones de la literatura e investigaciones. La RIE está integrada por cuerpos académicos de la UAEH, UAEM, UAC y UdeG

Educational data mining: applications and trends

This book is devoted to the Educational Data Mining arena. It highlights works that show relevant proposals, developments, and achievements that shape trends and inspire future research.  After a rigorous revision process sixteen manuscripts were accepted and organized into four parts as follows: ·     Profile: The first part embraces three chapters oriented to: 1) describe the nature of educational data mining (EDM); 2) describe how to pre-process raw data to facilitate data mining (DM); 3) explain how EDM supports government policies to enhance education. ·     Student modeling: The second part contains five chapters concerned with: 4) explore the factors having an impact on the students academic success; 5) detect student's personality and behaviors in an educational game; 6) predict students performance to adjust content and strategies; 7) identify students who will most benefit from tutor support; 8) hypothesize the student answer correctness based on eye metrics and mouse click. ·     Assessment: The third part has four chapters related to: 9) analyze the coherence of student research proposals; 10) automatically generate tests based on competences; 11) recognize students activities and visualize these activities for being presented to teachers; 12) find the most dependent test items in students response data. ·     Trends: The fourth part encompasses four chapters about how to: 13) mine text for assessing students productions and supporting teachers; 14) scan student comments by statistical and text mining techniques; 15) sketch a social network analysis (SNA) to discover student behavior profiles and depict models about their collaboration; 16) evaluate the structure of interactions between the students in social networks. This volume will be a source of interest to researchers, practitioners, professors, and postgraduate students aimed at updating their knowledge and find targets for future work in the field of educational data mining

Student model based on psychological models

AbstractIn this paper is set the framework for student modeling based on psychological models, which are deployed on the Web. During the development stage, some issues were dealt such as: the adaptation of tests that were designed for being applied manually to the subject by the experimenter. Moreover, the outcomes of the experiment are resumed, where one of the findings was that: the apprenticeship of students whose provision of lectures takes into account the student model is higher than the learning acquired by individuals whose student model is ignored. The aim of this work is to encourage the use of psychological models for being applied on the Web in order to spread their application in the adaptive Web-based education

Intelligent and Adaptive Educational-Learning Systems: Achievements and Trends

The Smart Innovation, Systems and Technologies book series encompasses the topics of knowledge, intelligence, innovation and sustainability. The aim of the series is to make available a platform for the publication of books on all aspects of single and multi-disciplinary research on these themes in order to make the latest results available in a readily-accessible form.  This book is devoted to the “Intelligent and Adaptive Educational-Learning Systems”. It privileges works that highlight key achievements and outline trends to inspire future research.  After a rigorous revision process twenty manuscripts were accepted and organized into four parts as follows: ·     Modeling: The first part embraces five chapters oriented to: 1) shape the affective behavior; 2) depict the adaptive learning curriculum; 3) predict learning achievements; 4) mine learner models to outcome optimized and adaptive e-learning objects; 5) classify learning preferences of learners. ·     Content: The second part encompasses five chapters aimed to: 6) provide adaptive guidance and personalized content; 7) adaptively select learning objects; 8) collaboratively generate learning objects; 9) automatic development of reusable adaptive content; 10) deploy intelligent tutoring systems as learning objects. ·     Virtuality: The third part holds four chapters dedicated to: 11) explain how Second Life was used to promote collaborative writing; 12) acquire knowledge within a smart home environment; 13) share experiences of adaptive training virtual systems; 14) reveal how an agent is used in a simulation-based tutoring system for learning the complex task of operating a robotic arm. ·     Applications: The fourth part owns six chapters concerned about: 15) an agent-based way to design scaffolding to prompt reflection; 16) the stimulation of self-regulated to learn higher order knowledge; 17) a web-mediated training system design architecture; 18) a decision making model upon the quality of the collaboration; 19) a dynamic storyboarding system to support academic process; 20) an analysis of educational and business effects of artificial intelligence application on education. The authors, reviewers and editors of this book expect this volume is of interest to researchers, practitioners, professors and postgraduate students aimed to update their knowledge and find out targets for future work in the field of artificial intelligence on education