Technologies are critical in large organizations, but they have a paradoxical nature that in turn facilitate and hinder organizational change. Rather than occupying a space and place in a specic time ...frame, an infrastructure appears when a set of local practices are produced by a larger scale technology and can then be used as a naturalized form by its users (Star and Ruhleder, 1996). This article describes how the Colombian Public Health Surveillance System (sivigila) constitutes the infrastructure to develop Public Health Surveillance (phs). For this, I conducted a case study with a multi-sited ethnographic perspective (Cresswell, Worth and Sheikh, 2011; Marcus, 2001). From Susan Leigh Stars model, I identied in sivigila the eight dimensions of infrastructure proposed by Star (Bowker and Star, 2000; Star, 1999; Star and Ruhleder, 1996). It can be concluded that infrastructures can only become visible when they are in operation and with the participation of all its actors, thus solving the tension between the local and the global (Star and Ruhleder, 1996).
Se desarrolló un sistema interacción humano-robot multimodal (gestos y voz) que permite a usuarios enseñarle tareas de clasificación de cubos por color a un robot. La evaluación del sistema fue ...realizada por siete usuarios de forma cuantitativa y cualitativa. En las pruebas cuantitativas se evaluó un total de 63 interacciones verbales, 252 interacciones gestuales, y 63 multimodales. El porcentaje de reconocimiento de las interacciones fue del 98.41% para los comandos de voz, 81.35 % para los gestuales, y 80.95% para las multimodales. Luego del aprendizaje, el robot fue capaz de realizar correctamente la tarea de clasificación de cubos por color en un 100%; siendo capaz de responder exitosamente ante condiciones iniciales (ubicaciones y cantidad de cubos) no enseñadas previamente. La evaluación cualitativa del sistema se realizó para conocer la percepción de los usuarios, arrojando resultados consistentes con los porcentajes de reconocimiento, favoreciendo la interacción verbal sobre la multimodal.
Capítulo 1. Principios básicos del mapeo tridimensional Diego I. Vanegas; Alexander Álvarez; Luis F. Pava ...
Revista colombiana de cardiología (Bogotá, Colombia : 1989),
03/2016, Letnik:
23, Številka:
S2
Journal Article
This paper presents the development of a cooperation scheme among unmanned aerial vehicle (UAV). Sliding mode control technique is used to guarantee that the set of robots can follow a reference ...trajectory and, in addition, will guarantee collision-free navigation of these autonomous vehicles. The analytical approach of the control strategy is shown, and the necessary conditions to guarantee the stability and governability of the multi-robot system are derived. The strategy and the derived conditions are tested using simulations, to demonstrate their effectiveness for collision-free navigation of an UAV fleet.
A qualitative study of development is done with the aim of proposing a pedagogical strategy leading to foment critical thinking in students of Nursing. Factors are identified as favoring or limiting ...the development of critical thinking in students of third year of the regular day course. By Induced sampling involved 20 informants key, consisting of teachers of the third year of Nursing. Semi-structured interview is applied. The data are analyzed from procedures induction, deduction, abstraction and generalization. It can identify the factors that favor the educational order and limit the development of critical thinking in these students and a teaching strategy aims to foment the development of this intellectual ability.
Se realizó una investigación cualitativa de desarrollo con el objetivo de proponer una estrategia pedagógica que conduzca a fomentar el pensamiento crítico en estudiantes de Licenciatura en Enfermería. Se analizaron los factores identificados como favorecedores o limitadores del desarrollo del pensamiento crítico en estudiantes de tercer año del curso regular diurno. Mediante muestreo intencional inducido participan 20 informantes clave, constituidos por profesores del tercer año de Licenciatura en Enfermería. Se aplicó entrevista semiestructurada. Los datos fueron analizados a partir de los procedimientos de inducción, deducción, abstracción y generalización. Se logró identificar los factores que en el orden educacional favorecen y limitan el desarrollo del pensamiento crítico en estos estudiantes y se propuso una estrategia pedagógica para fomentar el desarrollo de esta habilidad intelectual.
Optimización de costos en la empresa TCC S.A Contreras-Cáceres, Marynelda; Martínez-Álvarez, Giovanni Alexánder; Torres-Gómez, Freddy ...
Reflexiones contables,
07/2019, Letnik:
2, Številka:
2
Journal Article
Odprti dostop
El presente trabajo tiene como propósito crear una propuesta de mejoramiento para aminorar los gastos representados por conceptos de horas extra y recargos en la empresa TCC. De igual manera, se ...pretende hacer un diagnóstico que permita la identificación del origen del problema junto con un análisis detallado de las cuentas de gastos del personal por dicho concepto. Utilizando datos de información primaria suministrados por la empresa, encontrando retrasos de la llegada de los vehículos de carga Nacional por motivos ajenos a la empresa, retrasos que generan un tiempo muerto que finaliza en sobrecostos. Frente a esto se plantea implementar un nuevo diseño que evité el retraso de envíos y así eliminar o disminuir al máximo estos tiempos muertos para agilizar el procedimiento y disminuir el tiempo adicional que se usa para esto.
Pipe Insulation: Finding the Optimal Thickness Durand, Alejandro Anaya; Maldonado, Allan Osornio; Holly, Alexander Alvarez ...
Chemical Engineering,
10/2015, Letnik:
122, Številka:
10
Magazine Article, Trade Publication Article
Insulated pipes are important in many applications in the chemical process industries. Determining the most economical thickness of insulation for a pipeline is a problem of finding the right balance ...between using the least amount of insulating material with the least amount of energy loss. To demonstrate the complexity of the problem, the author first develop the equations that need to be solved numerically. After this, a shortcut method is presented, with examples to compare the results of using the numerical versus the shortcut method. To develop the shortcut method, they start with a base-case scenario in which all variables are known. The shortcut method presented here has been shown to be much simpler and faster that the rigorous numerical method for determining the optimal insulation thickness. The method can also be expanded to include other insulation materials and a wider range of pipe sizes.
Cardiotoxicity (CTox) is a major side effect of cancer therapies, but uniform diagnostic criteria to guide clinical and research practices are lacking.
We prospectively studied 865 patients, aged ...54.7 ± 13.9; 16.3% men, scheduled for anticancer therapy related with moderate/high CTox risk. Four groups of progressive myocardial damage/dysfunction were considered according to current guidelines: normal, normal biomarkers (high-sensitivity troponin T and N-terminal natriuretic pro-peptide), and left ventricular (LV) function; mild, abnormal biomarkers, and/or LV dysfunction (LVD) maintaining an LV ejection fraction (LVEF) ≥50%; moderate, LVD with LVEF 40-49%; and severe, LVD with LVEF ≤40% or symptomatic heart failure. Cardiotoxicity was defined as new or worsening of myocardial damage/ventricular function from baseline during follow-up. Patients were followed for a median of 24 months. Cardiotoxicity was identified in 37.5% patients during follow-up 95% confidence interval (CI) 34.22-40.8%, 31.6% with mild, 2.8% moderate, and 3.1% with severe myocardial damage/dysfunction. The mortality rate in the severe CTox group was 22.9 deaths per 100 patients-year vs. 2.3 deaths per 100 patients-year in the rest of groups, hazard ratio of 10.2 (95% CI 5.5-19.2) (P < 0.001).
The majority of patients present objective data of myocardial injury/dysfunction during or after cancer therapy. Nevertheless, severe CTox, with a strong prognostic relationship, was comparatively rare. This should be reflected in protocols for clinical and research practices.
COVID-19 patients present a high hospitalization rate with a high mortality risk for those requiring intensive care. When these patients have other comorbid conditions and older age, the risk for ...severe disease and poor outcomes after ICU admission are increased. The present work aims to describe the preliminary results of the ongoing NUTRICOVID study about the nutritional and functional status and the quality of life of adult COVID-19 survivors after ICU discharge, emphasizing the in-hospital and discharge situation of this population.
A multicenter, ambispective, observational cohort study was conducted in 16 public hospitals of the Community of Madrid with COVID-19 survivors who were admitted to the ICU during the first outbreak. Preliminary results of this study include data retrospectively collected. Malnutrition and sarcopenia were screened at discharge using MUST and SARC-F; the use of healthcare resources was measured as the length of hospital stay and requirement of respiratory support and tracheostomy during hospitalization; other study variables were the need for medical nutrition therapy (MNT); and patients’ functional status (Barthel index) and health-related quality of life (EQ-5D-5L).
A total of 176 patients were included in this preliminary analysis. Most patients were male and older than 60 years, who suffered an average (SD) weight loss of 16.6% (8.3%) during the hospital stay, with a median length of stay of 53 (27–89.5) days and a median ICU stay of 24.5 (11–43.5) days. At discharge, 83.5% and 86.9% of the patients were at risk of malnutrition and sarcopenia, respectively, but only 38% were prescribed MNT. In addition, more than 70% of patients had significant impairment of their mobility and to conduct their usual activities at hospital discharge.
This preliminary analysis evidences the high nutritional and functional impairment of COVID-19 survivors at hospital discharge and highlights the need for guidelines and systematic protocols, together with appropriate rehabilitation programs, to optimize the nutritional management of these patients after discharge.
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