Estrategia para la formulación de comunidades de práctica para la enseñanza de las ciencias con integración de TIC.

La propuesta de investigación presenta una estrategia para la formulación de Comunidad de Práctica para la enseñanza de las Ciencias con integración de TIC. La estrategia parte de la necesidad de contar con un espacio que permita constituir un sistema de gestión de conocimiento para mejorar el diseño y la implementación de TIC en la enseñanza de las ciencias, en los diferentes niveles educativos. La dinámica de la comunidad de práctica se orienta para el aprovechamiento de los recursos virtuales para lo cual se diseñó y desarrolló un portal Web para la interacción de los miembros, la publicación y evaluación de experiencias que empleen las TIC como mediación didáctica, con lo cual se pretende establecer un cuerpo de conocimiento especializado en el campo de la Didáctica de las Ciencias; que favorezca la profesionalización de los docentes

Educational robotics for the development of stem skills in postgraduate training teachers in Bogota-Colombia, 2021

Este documento presenta los resultados de la investigación realizada con profesores en formación posgradual de maestría en Edumática de la Universidad Autónoma de Colombia. El estudio tuvo por objeto desarrollar, aplicar y validar una estrategia pedagógica basada en robótica educativa, con un plan de intervención de veinticinco sesiones con el diseño dela misma cantidad de unidades didácticas fundamentadas desde el modelo pedagógico construccionista, con enfoque de aprendizaje basado en problemas, orientada al desarrollo de competencias STEM, lo que logro contribuir a la problemática de la baja motivación de los estudiantes de secundaria por el estudio de carreras científico tecnológicas. El diseño metodológico de la investigación fue de tipo cuasi-experimental desde un enfoque cuantitativo con alcance correlacional, como método de recolección empleo instrumentos en escala Likert validados por diez expertos en educación y el análisis de datos desarrollo la respectiva comprobación de hipótesis aplicando un modelo de regresión bivariada con el método de Pearson. Las pruebas de hipótesis evidenciaron que existe relación estadísticamente significativa entre propuesta educativa en Robótica Educativa y el desarrollo de competencias STEM en profesores. Acorde con el coeficiente de determinación que señalo que el 58,4% del comportamiento del desarrollo de competencias STEM en profesores es explicado por la aplicación de la estrategia pedagógica en robótica educativa, esto permitió demostrar que se favoreció el desarrollo de diversas habilidades y capacidades en los profesores en procesos de creatividad, solución de problemas, pensamiento crítico, y apropiación de tecnologías

La Política Monetaria y el Corto en México

El corto es un instrumento de política monetaria que utiliza el Banco de México para abatir la inflación. El corto ha sido un instrumento muy útil para Banco de México en la conducción de la política monetaria, porque ha permitido que los choques a los mercados se distribuyan y se absorban mediante movimientos tanto en las tasas de interés de corto plazo como movimientos en el tipo de cambio. Los resultados muestran que la tasa de interés de corto plazo y el dólar si tienen cierta relación con la política monetaria restrictiva aplicada en México para el período de enero de 1998 a enero de 2003. The study measures the effects of Monetary Policy in Mexico on the interest rate and exchange rate during the period of 1998 to 2003.Monetary Policy, Exchange rates, interest rates.

Characterization of Alkanolamine Blends for Carbon Dioxide Absorption. Corrosion and Regeneration Studies

There are a lot of research programs focusing on the development of new solvents for carbon dioxide capture. The most important priority should be reducing the energy consumption needed at the regeneration step, but minimizing solvent degradation and its corrosivity is also considered as a priority. In this research, the aqueous blends of 2-amino-2-methyl-1-propanol (AMP: 1 kmol·m−3) and 1-amino-2-propanol (MIPA: 0.1–0.5 kmol·m−3) are characterized in terms of density, viscosity, and surface tension. The carbon dioxide absorption rate and capacity, the regeneration capacity, and the corrosivity of these solvents are also evaluatedFinancial support for this research was obtained under the Project UJA 2016/08/07: “Development of more efficient solvents for carbon dioxide capture-2” (I+D+i Support Plan of the University of Jaen), for which we are gratefulS

Incidence of COVID-19 in Children and Young People Who Play Federated Football

[Abstract] Aim: To determine the incidence of SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) infection in children and young people who play federated football. Methods: Prospective study, from October 2020 to January 2021, in players aged 4 to 19 years from federated football clubs in Galicia, Spain (N = 23,845). Outbreaks and cases of SARS-CoV-2 infection were recorded. The cumulative incidence was compared with the incidence registered in Galicia in the same age range. Results: The cumulative incidence was 29.8 cases per 10,000 licenses in 4 months, lower than the incidence registered in the general population for all ages and both sexes (283.7 per 10,000 inhabitants; rate ratio = 9.5). It was higher in January (40.7 per 10,000), coinciding with the population peak. More cases were registered in futsal (42.9 vs 27.5 per 10,000) and competitions with periodic screenings (127.4 vs 9.1 per 10,000). There were 2 outbreaks in 2389 teams (0.08%). Conclusion: The results support the safety of football practice in children and young people with prevention protocols

Seroprevalence of bovine viral diarrhea virus (BVDV) in cattle from Sotaquirá, Colombia

Worldwide distributed Bovine Viral Diarrhea Virus (BVDV) represents a high risk of infection in most bovine farms, in which it is associated with gastrointestinal, respiratory, and reproductive diseases. The purpose of this research was to establish the seroprevalence and the main risk factors associated with the presentation of BVDV in the municipality of Sotaquirá, Colombia. Samples were taken from 1000 cattle of Holstein, Ayrshire, Jersey, Normande Gyr and Holstein x Gyr. Epidemiological surveys were implemented, reproductive and management variables were taken into consideration. Indirect ELISA was performed to detect specific antibodies against BVDV using the commercial kit SERELISA® BVD p80 Ab Mono Blocking. The overall seroprevalence of antibodies against BVDV was 42.5% (425/1000), where the Gyr breed (59.1% apparent prevalence (AP); 60.3% real prevalence (PR)) and the age group > 4 years (53.0% PA; 54.4% PR) presented the highest seroprevalences. A significant statistical association was found for the breed, age, management practices evaluated and the presentation of PI3 (p ≤ 0.05). Age group > 4 years, Normande breed, presentation of PI3 and grazing lease were established as risk factors associated with BVDV in the herds. These infections are mainly associated with dairy cattle and herds with many animals, so it is important to consider vaccination plans as a preventive system and follow up on the most common diseases

Generación automática de tesauros: propuesta de un método lingüístico - estadístico

En este trabajo se presenta la investigación realizada durante los dos últimos años dentro del proyecto Generación Automática de Tesauros Orientada a la Arquitectura de Componentes. En este trabajo se han desarrollado varios métodos para construir semiautomáticamente un tesauro de descriptores. Para ello se han intentado automatizar, en muchas ocasiones con éxito, todas las fases para esta construcción automática, poniendo especial énfasis en las fases de adquisición y organización del conocimiento

Democracia en el Estado de México: fortalezas y debilidades

En toda interacción humana puede estar presente el poder. Por tanto, todas las formas de interacción humana son susceptibles de catalogarse como democráticas o como autoritarias (e incluso híbridas, cuando conjugan elementos democráticos y autoritarios). En la interacción democrática o bien está ausente el poder o bien éste es ejercido con tolerancia y con apego a normas preestablecidas. En la interacción autoritaria prevalece la intolerancia, la arbitrariedad y la violencia

Efficacy and safety of pembrolizumab plus docetaxel vs docetaxel alone in patients with previously treated advanced non-small cell lung cancer: the PROLUNG Phase 2 randomized clinical trial

Importance: Because of socioeconomic factors, many patients with advanced non-small cell lung cancer (NSCLC) do not receive immunotherapy in the first-line setting. It is unknown if the combination of immunotherapy with chemotherapy can provide clinical benefits in immunotherapy-naive patients with disease progression after treatment with platinum-based chemotherapy. Objective: To evaluate the safety and efficacy of the combination of pembrolizumab plus docetaxel in patients with previously treated advanced NSCLC following platinum-based chemotherapy regardless of EGFR variants or programmed cell death ligand 1 status. Design, Setting, and Participants: The Pembrolizumab Plus Docetaxel for Advanced Non-Small Cell Lung Cancer (PROLUNG) trial randomized 78 patients with histologically confirmed advanced NSCLC in a 1:1 ratio to receive either pembrolizumab plus docetaxel or docetaxel alone from December 2016 through May 2019. Interventions: The experimental arm received docetaxel on day 1 (75 mg/m2) plus pembrolizumab on day 8 (200 mg) every 3 weeks for up to 6 cycles followed by pembrolizumab maintenance until progression or unacceptable toxic effects. The control arm received docetaxel monotherapy. Main Outcomes and Measures: The primary end point was overall response rate (ORR). Secondary end points included progression-free survival (PFS), overall survival, and safety. Results: Among 78 recruited patients, 32 (41%) were men, 34 (44%) were never smokers, and 25 (32%) had an EGFR/ALK alteration. Forty patients were allocated to receive pembrolizumab plus docetaxel, and 38 were allocated to receive docetaxel. A statistically significant difference in ORR, assessed by an independent reviewer, was found in patients receiving pembrolizumab plus docetaxel vs patients receiving docetaxel (42.5% vs 15.8%; odds ratio, 3.94; 95% CI, 1.34-11.54; P =.01). Patients without EGFR variations had a considerable difference in ORR of 35.7% vs 12.0% (P =.06), whereas patients with EGFR variations had an ORR of 58.3% vs 23.1% (P =.14). Overall, PFS was longer in patients who received pembrolizumab plus docetaxel (9.5 months; 95% CI, 4.2-not reached) than in patients who received docetaxel (3.9 months; 95% CI, 3.2-5.7) (hazard ratio, 0.24; 95% CI, 0.13-0.46; P <.001). For patients without variations, PFS was 9.5 months (95% CI, 3.9-not reached) vs 4.1 months (95% CI, 3.5-5.3) (P <.001), whereas in patients with EGFR variations, PFS was 6.8 months (95% CI, 6.2-not reached) vs 3.5 months (95% CI, 2.3-6.2) (P =.04). In terms of safety, 23% (9 of 40) vs 5% (2 of 38) of patients experienced grade 1 to 2 pneumonitis in the pembrolizumab plus docetaxel and docetaxel arms, respectively (P =.03), while 28% (11 of 40) vs 3% (1 of 38) experienced any-grade hypothyroidism (P =.002). No new safety signals were identified. Conclusions and Relevance: In this phase 2 study, the combination of pembrolizumab plus docetaxel was well tolerated and substantially improved ORR and PFS in patients with advanced NSCLC who had previous progression after platinum-based chemotherapy, including NSCLC with EGFR variations. Trial Registration: ClinicalTrials.gov Identifier: NCT02574598