La vida cotidiana en las escuelas secundarias: contexto, escenario y actores

Con este trabajo se pretende destacar la manera en que el contexto adquiere una alta significación para la vida interna de las escuelas. Lo que sucede fuera de los establecimientos es tanto o más importante para la vida institucional que lo que sucede dentro de los muros. Estas condiciones marcan pautas para el trabajo de los profesores y directivos, y rebasan el ámbito académico para proyectarse hacia la atención de las necesidades sociales y culturales de cada comunidad

Satisfacción laboral y condiciones laborales de los docentes de educación primaria

En este estudio se presentan los resultados sobre la percepción que tienen los docentes frente a grupo de educación primaria, en los municipios de Ahumada, Chihuahua y Juárez en relación con su satisfacción laboral, ya que de acuerdo con la literatura el rendimiento del docente se debe a distintas variables organizacionales, normativas y personales que impactan en la motivación, satisfacción y bienestar y al mismo tiempo influyen en el desempeño laboral y como consecuencia se refleja en los resultados de la calidad educativa. Se realizó un estudio cuantitativo con el método de la encuesta, consultando a docentes de escuelas primarias federalizadas a partir de una muestra de 150 escuelas seleccionadas mediante un procedimiento aleatorio y a 1112 docentes, estos resultados también se comparan con algunas otras variables para determinar el grado de satisfacción laboral que perciben los docentes, tales como: antigüedad laboral y seguridad en el empleo. Podemos encontrar entre los resultados obtenidos que la satisfacción laboral se relaciona sistemáticamente con tener cubiertas las necesidades de los profesores, a partir de lo cual ellos se muestran motivados para mejorar su desempeño, lo cual se refleja en su labor cotidiana, esto se obtiene cuando van adquiriendo mejores condiciones laborales y por consecuencia sienten mayor estabilidad laboral e impacta en la calidad educativa

La influencia de la inteligencia emocional en el estilo de liderazgo de los directores de escuelas de Educación Básica

En este estudio se presentan los resultados sobre la percepción que tienen los docentes de educación básica de: preescolar, primaria y secundaria en la ciudad de Chihuahua respecto al manejo de la inteligencia emocional en los directivos de las escuelas. Los directores escolares son quienes determinan el rumbo, fijan las estrategias, vigilan el cumplimiento de normas, políticas y objetivos, toma las decisiones en cada circunstancia, evalúan resultados, forman equipos de trabajo, SEP (1986, p. 27). Motivan, incentivan, cuestionan y moderan el desempeño de los trabajadores educativos, por citar las actividades más importantes. Para poder desarrollar una función directiva equilibrada acorde a los lineamientos institucionales, la inteligencia emocional es una competencia relevante que todo director debe desarrollar y poseer. La investigación está fundamentada en el enfoque cuantitativo y utiliza el método de la encuesta. Se consultó a 128 docentes de escuelas de nivel básico federalizadas a partir de una muestra de 13 escuelas, y los resultados se comparan entre las variables de inteligencia emocional y liderazgo directivo para determinar las habilidades de la inteligencia emocional que perciben los docentes en su director al aplicar el liderazgo directivo. En los resultados podemos encontrar cuáles habilidades de la inteligencia emocional  se relacionas más con el liderazgo aplicado por el directivo escolar y así reconocer las principales debilidades y fortalezas del liderazgo directivo, con la finalidad de mejorar aquellas dimensiones de la inteligencia emocional que observen deficiencias en el liderazgo directivo

Condiciones laborales de docentes de educación primaria

Se presenta información cuantitativa sobre las percepciones que tienen los docentes de educación primaria de escuelas federalizadas y estatales de los municipios de Ahumada, Chihuahua y Juárez, Estado de Chihuahua, México, sobre su situación laboral en el contexto de la RIEB. En esta parte del estudio se aprecia una tendencia sobre el aumento de trabajo de los docentes en sus diferentes funciones derivado de la implementación de la RIEB además de que sus condiciones laborales no se modificaron; también se aprecia una tendencia positiva sobre su satisfacción laboral y sobre su propia valoración de la función que desempeñan

Algunas percepciones de los docentes de educación primaria sobre sus condiciones laborales.

Se presenta información cuantitativa sobre las percepciones que tienen los docentes de educación primaria de escuelas federalizadas y estatales de los municipios de Ahumada, Chihuahua y Juárez, Estado de Chihuahua, México, sobre su situación laboral en el contexto de la RIEB. En esta parte del estudio se aprecia una tendencia sobre el aumento de trabajo de los docentes en sus diferentes funciones derivado de la implementación de la RIEB además de que sus condiciones laborales no se modificaron; también se aprecia una tendencia positiva sobre su satisfacción laboral y sobre su propia valoración de la función que desempeñan

Antioxidant properties of soy-dairy milk blends fermented with probiotics

ABSTRACT Objective: Evaluate the effect of the substitution of cow milk with soy beverage on the antioxidant properties, physicochemical parameters, and sensory quality of the probiotic and conventional fermented beverages. Design/methodology/approach: Different combinations of soy beverage (T1=80%, T2=60%, T3=40%, and T4=20%) with cow milk (20%, 40%, 60%, and 80%, respectively) were fermented with either conventional or probiotic cultures. The antioxidant activity of fermented beverages was evaluated by DPPH method and the samples were also characterized for protein, fat, solids non-fat, density, and acidity. Sensory evaluation was done in order to determine the acceptability of the fermented beverages. Results: Overall, most treatments fermented with the probiotic culture showed higher (P<0.05) antioxidant capacity compared to those fermented with the conventional culture. In contrast, for both starter cultures, it was observed that the T1 treatment displayed the highest (P<0.05) antioxidant activity compared with the other treatments (T2, T3, and T4). Similarly, the treatment T1-probiotic culture was the most preferred, being the aroma and appearance, the sensory properties scored with the highest degree of liking. Study Limitations: Follow-up research is needed to identify the bioactive compounds responsible for antioxidant properties exhibited by fermented soy-dairy milk beverages. Findings/conclusions: Probiotic cultures can be used to generate soy-dairy milk fermented beverages with noticeable antioxidant and sensory properties.Objective: Evaluate the effect of the substitution of cow milk with soy beverage on the antioxidant properties, physicochemical parameters, and sensory quality of the probiotic and conventional fermented beverages.Design/methodology/approach: Different combinations of soy beverage (T1=80%, T2=60%, T3=40%, and T4=20%) with cow milk (20%, 40%, 60%, and 80%, respectively) were fermented with either conventional or probiotic cultures. The antioxidant activity of fermented beverages was evaluated by DPPH method and the samples were also characterized for protein, fat, solids non-fat, density, and acidity. Sensory evaluation was done in order to determine the acceptability of the fermented beverages.Results: Overall, most treatments fermented with the probiotic culture showed higher (P<0.05) antioxidant capacity compared to those fermented with the conventional culture. In contrast, for both starter cultures, it wasobserved that the T1 treatment displayed the highest (P<0.05) antioxidant activity compared with the other treatments (T2, T3, and T4). Similarly, the treatment T1-probiotic culture was the most preferred, being the aroma and appearance, the sensory properties scored with the highest degree of liking. Study Limitations: Follow-up research is needed to identify the bioactive compounds responsible for antioxidant properties exhibited by fermented soy-dairy milk beverages.Findings/conclusions: Probiotic cultures can be used to generate soy- dairy milk fermented beverages with noticeable antioxidant and sensory properties

Cabbage and fermented vegetables : From death rate heterogeneity in countries to candidates for mitigation strategies of severe COVID-19

Large differences in COVID-19 death rates exist between countries and between regions of the same country. Some very low death rate countries such as Eastern Asia, Central Europe, or the Balkans have a common feature of eating large quantities of fermented foods. Although biases exist when examining ecological studies, fermented vegetables or cabbage have been associated with low death rates in European countries. SARS-CoV-2 binds to its receptor, the angiotensin-converting enzyme 2 (ACE2). As a result of SARS-CoV-2 binding, ACE2 downregulation enhances the angiotensin II receptor type 1 (AT(1)R) axis associated with oxidative stress. This leads to insulin resistance as well as lung and endothelial damage, two severe outcomes of COVID-19. The nuclear factor (erythroid-derived 2)-like 2 (Nrf2) is the most potent antioxidant in humans and can block in particular the AT(1)R axis. Cabbage contains precursors of sulforaphane, the most active natural activator of Nrf2. Fermented vegetables contain many lactobacilli, which are also potent Nrf2 activators. Three examples are: kimchi in Korea, westernized foods, and the slum paradox. It is proposed that fermented cabbage is a proof-of-concept of dietary manipulations that may enhance Nrf2-associated antioxidant effects, helpful in mitigating COVID-19 severity.Peer reviewe

Nrf2-interacting nutrients and COVID-19 : time for research to develop adaptation strategies

There are large between- and within-country variations in COVID-19 death rates. Some very low death rate settings such as Eastern Asia, Central Europe, the Balkans and Africa have a common feature of eating large quantities of fermented foods whose intake is associated with the activation of the Nrf2 (Nuclear factor (erythroid-derived 2)-like 2) anti-oxidant transcription factor. There are many Nrf2-interacting nutrients (berberine, curcumin, epigallocatechin gallate, genistein, quercetin, resveratrol, sulforaphane) that all act similarly to reduce insulin resistance, endothelial damage, lung injury and cytokine storm. They also act on the same mechanisms (mTOR: Mammalian target of rapamycin, PPAR gamma:Peroxisome proliferator-activated receptor, NF kappa B: Nuclear factor kappa B, ERK: Extracellular signal-regulated kinases and eIF2 alpha:Elongation initiation factor 2 alpha). They may as a result be important in mitigating the severity of COVID-19, acting through the endoplasmic reticulum stress or ACE-Angiotensin-II-AT(1)R axis (AT(1)R) pathway. Many Nrf2-interacting nutrients are also interacting with TRPA1 and/or TRPV1. Interestingly, geographical areas with very low COVID-19 mortality are those with the lowest prevalence of obesity (Sub-Saharan Africa and Asia). It is tempting to propose that Nrf2-interacting foods and nutrients can re-balance insulin resistance and have a significant effect on COVID-19 severity. It is therefore possible that the intake of these foods may restore an optimal natural balance for the Nrf2 pathway and may be of interest in the mitigation of COVID-19 severity

Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at √s = 13 TeV

Abstract The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d̂ t) and chromomagnetic (μ̂ t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected in the CMS detector in a data sample corresponding to an integrated luminosity of 35.9 fb−1. The linearized variable AFB(1) is used to approximate the asymmetry. Candidate t t ¯ events decaying to a muon or electron and jets in final states with low and high Lorentz boosts are selected and reconstructed using a fit of the kinematic distributions of the decay products to those expected for t t ¯ final states. The values found for the parameters are AFB(1)=0.048−0.087+0.095(stat)−0.029+0.020(syst),μ̂t=−0.024−0.009+0.013(stat)−0.011+0.016(syst), and a limit is placed on the magnitude of | d̂ t| < 0.03 at 95% confidence level. [Figure not available: see fulltext.

MUSiC : a model-unspecific search for new physics in proton-proton collisions at root s=13TeV

Results of the Model Unspecific Search in CMS (MUSiC), using proton-proton collision data recorded at the LHC at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1), are presented. The MUSiC analysis searches for anomalies that could be signatures of physics beyond the standard model. The analysis is based on the comparison of observed data with the standard model prediction, as determined from simulation, in several hundred final states and multiple kinematic distributions. Events containing at least one electron or muon are classified based on their final state topology, and an automated search algorithm surveys the observed data for deviations from the prediction. The sensitivity of the search is validated using multiple methods. No significant deviations from the predictions have been observed. For a wide range of final state topologies, agreement is found between the data and the standard model simulation. This analysis complements dedicated search analyses by significantly expanding the range of final states covered using a model independent approach with the largest data set to date to probe phase space regions beyond the reach of previous general searches.Peer reviewe