Relação entre as estratégias de aprendizagem eo desempenho acadêmico in alunos da educação básica /

El tema central de la investigación es el estudio de las estrategias de aprendizaje y el rendimiento académico en estudiantes de educación básica primaria de la Institución pública Policarpa Salavarrieta. Como metodología se asumió un estudio no experimental de diseño selectivo o expost-facto, pues se seleccionaron los participantes según sus características personales y se estableció una relación entre las variables objeto de estudio: estrategias de aprendizaje (VI) y rendimiento académico (VD); recogiendo una muestra intencional de 60 estudiantes del grado 5 los cuales respondieron a la aplicación de la escala ACRA de Román y Gallego (1994). Los análisis realizados fueron descriptivos de las principales variables del estudio y correlaciones lineales entre las estrategias de aprendizaje y el rendimiento académico. Los resultados indicaron correlaciones estadísticamente significativas entre las diferentes escalas del Test ACRA siendo todas positivas, de igual manera se aprecia que asignaturas como Lengua Castellana y Ciencias Naturales tienen una asociación fuerte. Finalmente, existe asociación entre las variables de estrategias de aprendizaje y rendimiento académico, por lo cual se puede aseverar que del empleo adecuado de las estrategias de aprendizaje dependerá el alcance de un rendimiento académico.Universidad Autónoma del Caribe

Robust estimation of bacterial cell count from optical density

Optical density (OD) is widely used to estimate the density of cells in liquid culture, but cannot be compared between instruments without a standardized calibration protocol and is challenging to relate to actual cell count. We address this with an interlaboratory study comparing three simple, low-cost, and highly accessible OD calibration protocols across 244 laboratories, applied to eight strains of constitutive GFP-expressing E. coli. Based on our results, we recommend calibrating OD to estimated cell count using serial dilution of silica microspheres, which produces highly precise calibration (95.5% of residuals <1.2-fold), is easily assessed for quality control, also assesses instrument effective linear range, and can be combined with fluorescence calibration to obtain units of Molecules of Equivalent Fluorescein (MEFL) per cell, allowing direct comparison and data fusion with flow cytometry measurements: in our study, fluorescence per cell measurements showed only a 1.07-fold mean difference between plate reader and flow cytometry data

Relación entre las estrategias de aprendizaje y el rendimiento académico en estudiantes de educación básica primaria

El tema central de la investigación es el estudio de las estrategias de aprendizaje y el rendimiento académico en estudiantes de educación básica primaria de la Institución pública Policarpa Salavarrieta. Como metodología se asumió un estudio no experimental de diseño selectivo o expost-facto, pues se seleccionaron los participantes según sus características personales y se estableció una relación entre las variables objeto de estudio: estrategias de aprendizaje (VI) y rendimiento académico (VD); recogiendo una muestra intencional de 60 estudiantes del grado 5 los cuales respondieron a la aplicación de la escala ACRA de Román y Gallego (1994). Los análisis realizados fueron descriptivos de las principales variables del estudio y correlaciones lineales entre las estrategias de aprendizaje y el rendimiento académico. Los resultados indicaron correlaciones estadísticamente significativas entre las diferentes escalas del Test ACRA siendo todas positivas, de igual manera se aprecia que asignaturas como Lengua Castellana y Ciencias Naturales tienen una asociación fuerte. Finalmente, existe asociación entre las variables de estrategias de aprendizaje y rendimiento académico, por lo cual se puede aseverar que del empleo adecuado de las estrategias de aprendizaje dependerá el alcance de un rendimiento académico

TX - Taller de Tesis - AR304 - 202102

Descripción: En este curso se desarrollará, mediante una propuesta arquitectónica, un proyecto escogido por el estudiante, en el que pueda acreditar que está en capacidad de hacer frente a los principales aspectos comprendidos en el desarrollo de un proyecto arquitectónico. En la primera etapa se establecen los criterios básicos de diseño de un pre-anteproyecto arquitectónico sustentado a partir de las condiciones: conceptuales, programáticas y de usuario, aspectos medio ambientales, urbano y paisajistas. En la segunda etapa se desarrolla un anteproyecto arquitectónico incluyendo además los criterios de las especialidades de estructuras, instalaciones eléctricas y sanitarias, y sistemas de evacuación. Propósito: El curso tiene como propósito la aprobación del anteproyecto con el cual el estudiante puede iniciar su Proyecto de Titulación Profesional. Busca contribuir al desarrollo de las competencias generales UPC: Comunicación Escrita, Comunicación Oral, 3Pensamiento Crítico, Razonamiento Cuantitativo, Manejo de la Información, Ciudadanía, Pensamiento Innovador y de las competencias específicas de la carrera: Diseño Fundamentado (que corresponde a los criterios NAAB PC2, PC3,PC5, PC8, SC5), Cultura Arquitectónica (que corresponde a los criterios NAAB1 PC4), Técnica y Construcción (que corresponde a los criterios NAAB1 SC1, SC4,SC6) y Gestión Profesional (que corresponde a los criterios NAAB1 PC6, SC2), todas en el nivel 3. Tiene como requisitos AR248 Gestión Inmobiliaria y HU61 inglés 5 y AR271 Lineamientos para el Proyecto Profesional y AR272 Seminario de Urbanismo y AR250 TIX - Taller de Ejercicio Profesional y aprobación por el director de la Carrera

Evaluation of a quality improvement intervention to reduce anastomotic leak following right colectomy (EAGLE): pragmatic, batched stepped-wedge, cluster-randomized trial in 64 countries

Background Anastomotic leak affects 8 per cent of patients after right colectomy with a 10-fold increased risk of postoperative death. The EAGLE study aimed to develop and test whether an international, standardized quality improvement intervention could reduce anastomotic leaks. Methods The internationally intended protocol, iteratively co-developed by a multistage Delphi process, comprised an online educational module introducing risk stratification, an intraoperative checklist, and harmonized surgical techniques. Clusters (hospital teams) were randomized to one of three arms with varied sequences of intervention/data collection by a derived stepped-wedge batch design (at least 18 hospital teams per batch). Patients were blinded to the study allocation. Low- and middle-income country enrolment was encouraged. The primary outcome (assessed by intention to treat) was anastomotic leak rate, and subgroup analyses by module completion (at least 80 per cent of surgeons, high engagement; less than 50 per cent, low engagement) were preplanned. Results A total 355 hospital teams registered, with 332 from 64 countries (39.2 per cent low and middle income) included in the final analysis. The online modules were completed by half of the surgeons (2143 of 4411). The primary analysis included 3039 of the 3268 patients recruited (206 patients had no anastomosis and 23 were lost to follow-up), with anastomotic leaks arising before and after the intervention in 10.1 and 9.6 per cent respectively (adjusted OR 0.87, 95 per cent c.i. 0.59 to 1.30; P = 0.498). The proportion of surgeons completing the educational modules was an influence: the leak rate decreased from 12.2 per cent (61 of 500) before intervention to 5.1 per cent (24 of 473) after intervention in high-engagement centres (adjusted OR 0.36, 0.20 to 0.64; P < 0.001), but this was not observed in low-engagement hospitals (8.3 per cent (59 of 714) and 13.8 per cent (61 of 443) respectively; adjusted OR 2.09, 1.31 to 3.31). Conclusion Completion of globally available digital training by engaged teams can alter anastomotic leak rates. Registration number: NCT04270721 (http://www.clinicaltrials.gov)

Risk of COVID-19 after natural infection or vaccinationResearch in context

Background: While vaccines have established utility against COVID-19, phase 3 efficacy studies have generally not comprehensively evaluated protection provided by previous infection or hybrid immunity (previous infection plus vaccination). Individual patient data from US government-supported harmonized vaccine trials provide an unprecedented sample population to address this issue. We characterized the protective efficacy of previous SARS-CoV-2 infection and hybrid immunity against COVID-19 early in the pandemic over three-to six-month follow-up and compared with vaccine-associated protection. Methods: In this post-hoc cross-protocol analysis of the Moderna, AstraZeneca, Janssen, and Novavax COVID-19 vaccine clinical trials, we allocated participants into four groups based on previous-infection status at enrolment and treatment: no previous infection/placebo; previous infection/placebo; no previous infection/vaccine; and previous infection/vaccine. The main outcome was RT-PCR-confirmed COVID-19 >7–15 days (per original protocols) after final study injection. We calculated crude and adjusted efficacy measures. Findings: Previous infection/placebo participants had a 92% decreased risk of future COVID-19 compared to no previous infection/placebo participants (overall hazard ratio [HR] ratio: 0.08; 95% CI: 0.05–0.13). Among single-dose Janssen participants, hybrid immunity conferred greater protection than vaccine alone (HR: 0.03; 95% CI: 0.01–0.10). Too few infections were observed to draw statistical inferences comparing hybrid immunity to vaccine alone for other trials. Vaccination, previous infection, and hybrid immunity all provided near-complete protection against severe disease. Interpretation: Previous infection, any hybrid immunity, and two-dose vaccination all provided substantial protection against symptomatic and severe COVID-19 through the early Delta period. Thus, as a surrogate for natural infection, vaccination remains the safest approach to protection. Funding: National Institutes of Health

Risk of COVID-19 after natural infection or vaccinationResearch in context

Summary: Background: While vaccines have established utility against COVID-19, phase 3 efficacy studies have generally not comprehensively evaluated protection provided by previous infection or hybrid immunity (previous infection plus vaccination). Individual patient data from US government-supported harmonized vaccine trials provide an unprecedented sample population to address this issue. We characterized the protective efficacy of previous SARS-CoV-2 infection and hybrid immunity against COVID-19 early in the pandemic over three-to six-month follow-up and compared with vaccine-associated protection. Methods: In this post-hoc cross-protocol analysis of the Moderna, AstraZeneca, Janssen, and Novavax COVID-19 vaccine clinical trials, we allocated participants into four groups based on previous-infection status at enrolment and treatment: no previous infection/placebo; previous infection/placebo; no previous infection/vaccine; and previous infection/vaccine. The main outcome was RT-PCR-confirmed COVID-19 >7–15 days (per original protocols) after final study injection. We calculated crude and adjusted efficacy measures. Findings: Previous infection/placebo participants had a 92% decreased risk of future COVID-19 compared to no previous infection/placebo participants (overall hazard ratio [HR] ratio: 0.08; 95% CI: 0.05–0.13). Among single-dose Janssen participants, hybrid immunity conferred greater protection than vaccine alone (HR: 0.03; 95% CI: 0.01–0.10). Too few infections were observed to draw statistical inferences comparing hybrid immunity to vaccine alone for other trials. Vaccination, previous infection, and hybrid immunity all provided near-complete protection against severe disease. Interpretation: Previous infection, any hybrid immunity, and two-dose vaccination all provided substantial protection against symptomatic and severe COVID-19 through the early Delta period. Thus, as a surrogate for natural infection, vaccination remains the safest approach to protection. Funding: National Institutes of Health