Important Teacher Qualities for Integrating Blended Learning in Higher Education

Blended learning is widely accepted in Peruvian higher education for a number of reasons, including the fact that it allows students more leeway to accommodate their own unique schedule and learning needs. The present qualitative research investigates the qualities of effective teachers that are crucial to the successful implementation of blended learning from the vantage point of experts, who can gain valuable insight into the causes of organizational problems and the best strategies for resolving them. There are seven positive characteristics of blended learning teachers, such as the ability to recognize the need for pedagogical change or the confidence to incorporate technology into learning processes, and four negative characteristics, such as a lack of familiarity with blended learning or anxiety about students use of technology. Blended learning in higher education is investigated here to identify the factors that influence it

Biodiversidad microtemporal de la aracnofauna en el agrosistema del olivo cultivar Arauco en La Rioja, Argentina.

La Rioja es una de las provincias de mayor producción de olivo en Argentina. En los olivares de España, principal productor mundial, el elevado rendimiento actualmente obtenido, se debe al manejo integrado y conservación de la biodiversidad deespecies benéficas en campo. Dentro de esta biodiversidad, la aracnofauna se caracteriza por tener las especies generalistaspredadoras y presentar alta diversidad taxonómica con respuestas a cambios ambientales específicos, afectados por la abundancia de presas y por el manejo de su habitad.Esta investigación se desarrolló en el fundo La Candelaria en el cultivo de olivo cultivar Arauco durante los meses de octubre adiciembre de 2012. Se tomó una muestra mensual en 10 árboles, las cuales fueron analizadas en el CENIIT de la UNLaR. La interpretación de los datos se realizó mediante tablas de frecuencias y los índices de Shannon y Simpson. En el agroecosistema del olivo de La Rioja se registraron seis morfoespecies de arañas. Los resultados reflejaron una mayor riqueza específica (S=6), índice de equidad (0.87) y mayor diversidad (0.91) de la aracnofauna en el mes de noviembre.Biodiversity microtemporal of arachnofauna in crop Arauco olive in La Rioja, Argentina.AbstractLa Rioja is one of the largest provinces of olive production in Argentina. In the olive groves of Spain, the main producer, currently the high performance achieved is due to the integrated management and conservation of biodiversity of beneficial species in the field. Within this biodiversity, arachnofauna is characterized by generalist predatory species high taxonomic diversity and present with specific responses to environmental changes, affected by the abundance of prey and their habitat management.This research was conducted at the crop La Candelaria in cultivar Arauco during the months of October to December 2012. A sample monthly 10 trees, which were analyzed in the UNLaR CENIIT. The interpretation of the data using frequency tables and indexes Shannon and Simpson. In the olive agroecosystem La Rioja were six morphospecies of spiders. The results showed a higher species richness (S = 6), equity index (0.87) and diversity (0.91) of the arachnofauna in November.Keywords: Arachnofauna; Biodiversity; Cultivar Arauco; Olive crop

Using thermal UAV imagery to model distributed debris thicknesses and sub-debris melt rates on debris-covered glaciers

Supraglacial debris cover regulates the melt rates of many glaciers in mountainous regions around the world, thereby modifying the availability and quality of downstream water resources. However, the influence of supraglacial debris is often poorly represented within glaciological models, due to the absence of a technique to provide high-precision, spatially continuous measurements of debris thickness. Here, we use high-resolution UAV-derived thermal imagery, in conjunction with local meteorological data, visible UAV imagery and vertically profiled debris temperature time series, to model the spatially distributed debris thickness across a portion of Llaca Glacier in the Cordillera Blanca of Peru. Based on our results, we simulate daily sub-debris melt rates over a 3-month period during 2019. We demonstrate that, by effectively calibrating the radiometric thermal imagery and accounting for temporal and spatial variations in meteorological variables during UAV surveys, thermal UAV data can be used to more precisely represent the highly heterogeneous patterns of debris thickness and sub-debris melt on debris-covered glaciers. Additionally, our results indicate a mean sub-debris melt rate nearly three times greater than the mean melt rate simulated from satellite-derived debris thicknesses, emphasising the importance of acquiring further high-precision debris thickness data for the purposes of investigating glacier-scale melt processes, calibrating regional melt models and improving the accuracy of runoff predictions

PRIVATE SAVINGS IN TRANSITION ECONOMIES: ARE THERE TERMS OF TRADE SHOCKS?

The paper examines the impact of terms of trade shocks on private savings in the transition economies after accounting for the effect of other determinants. Economic agents in the transition economies are subject to tight credit constraints which are more pronounced during bad state of nature. Thus, adverse shocks to commodity prices in the world market can force them to reduce savings by a larger amount than they would otherwise have. Empirical analysis using a dynamic panel model and data from twenty one transition economies confirm that most of the determinants of savings identified in the literature also apply to the transition economies. Favorable movements in both the permanent and transitory components of the terms of trade have a significant positive impact on private savings with transitory movements having a larger impact than the permanent component. This reflects the lack of access to foreign borrowing that many of the transition economies have faced during the last decade. Although the impact of terms of trade shocks are found to be asymmetric, the magnitude of the impact appears to be small. The results are robust for alternative estimators, determinants, and country groupings.http://deepblue.lib.umich.edu/bitstream/2027.42/39958/3/wp572.pd

Dosis de refuerzo con la vacuna BNT162b2 en población que recibió el esquema de vacunación completa para COVID-19 en Perú: Un análisis crítico de la evidencia actual

Background: In Peru, the current immunization schedule for COVID-19 includes BBIBP-CorV, BNT162B2 and ChAdOx1 nCoV-19 vaccines. Although the full immunization schedule is two doses, some countries have recently included a booster dose to their schedule. Methods: We conducted a search for scientific evidence on the efficacy and safety of booster vaccination with BNT162b2 vaccine in a population with a complete vaccination schedule for COVID-19 in Peru. Evidence: Four evidence-based recommendation documents, one observational study and three ongoing phase III clinical trials were included for analysis. Conclusion: To date, there is insufficient evidence on the efficacy of adding a booster dose to the immunization schedule for COVID-19. The available evidence does not justify the use of a booster dose of BNT162B2 vaccine in a population that has previously received two doses of the aforementioned vaccines.Introducción: En el Perú, el programa actual de inmunización para COVID-19 comprende las vacunas BBIBP-CorV, BNT162B2 y ChAdOx1 nCoV-19. Si bien el esquema de inmunización es de dos dosis, algunos países han incluido recientemente una dosis de refuerzo a su esquema. Métodos: Se realizó una búsqueda de evidencia científica sobre la eficacia y seguridad de la vacunación de refuerzo con la vacuna BNT162b2 en población con esquema de vacunación completa para COVID-19 en Perú. Evidencia incluida: Se consideraron cuatro documentos de recomendación basados en evidencia, un estudio observacional y tres ensayos clínicos fase III en curso. Conclusión: A la fecha, no existe evidencia suficiente sobre la eficacia de agregar una dosis de refuerzo al esquema de inmunización para COVID-19. La evidencia disponible no permite justificar el uso de una dosis de refuerzo con la vacuna BNT162B2 en población que recibió previamente dos dosis de las vacunas anteriormente mencionadas

Propuesta de utilizaci?n del gas natural licuefactado en los camiones mineros : evaluaci?n de beneficios

El uso intensivo del di?sel en la cadena de valor de la miner?a representa una gran oportunidad de brindar eficiencia y sostenibilidad al sector minero mediante la sustituci?n parcial del di?sel por Gas Natural Licuado (GNL) en los camiones mineros. El presente trabajo de investigaci?n evalu? las ventajas competitivas para la miner?a de tajo abierto reduciendo los costos de combustibles en 49.4% (US$513 millones); adem?s se dejar?an de importar 4.5 millones de Barriles de di?sel por a?o, que representa un super?vit de US$ 386 millones en la balanza comercial del a?o 2018. Asimismo, se dejar?an de emitir 543 mil toneladas de CO2 por a?o, lo cual representa una reducci?n del 28% de las emisiones de CO2. Los otros beneficios que se generan al introducir el GNL en la matriz energ?tica de la miner?a, acorde a la pol?tica energ?tica nacional, incluyen poner en valor las reservas de gas natural e impulsar su masificaci?n, menor dependencia energ?tica y volatilidad en los precios de los recursos energ?ticos, menores riesgos asociados a la adulteraci?n y los derrames, reducci?n de material particulado que produce una serie de externalidades negativas. Tambi?n se genera el aumento del canon y regal?as por la mayor producci?n de gas natural

Policy volatility and growth

The paper aims to examine how fiscal and monetary volatility might affect the balanced economic growth rate using a standard monetary growth model characterized by nominal wage rigidity and productive public spending. The model shows that any type of shock — monetary or fiscal — can generate either a negative or positive relationship between short-run volatility and long-run growth, critically de- pending on the size of government and the elasticity of output with respect to labor/ capital. In particular, given the labor income share, it shows that excessive government spending may cause the impact of fiscal volatility on long-run growth to turn from positive to negative. In addition, a rise in the volatility of the monetary shock is capable of generating either an increase or decrease in the mean of growth. With the range of the labor share values in reality, the model produces results consistent with the fact that the relationship between volatility and growth is generally found empirically to be more negative in developing than in developed countries. The model can be seen as a further explanation for the ambiguous empirical evidence in the existing literature.info:eu-repo/semantics/publishedVersio

Light Converts Endosymbiotic Fungus to Pathogen, Influencing Seedling Survival and Niche-Space Filling of a Common Tropical Tree, Iriartea deltoidea

Pathogens are hypothesized to play an important role in the maintenance of tropical forest plant species richness. Notably, species richness may be promoted by incomplete filling of niche space due interactions of host populations with their pathogens. A potentially important group of pathogens are endophytic fungi, which asymptomatically colonize plants and are diverse and abundant in tropical ecosystems. Endophytes may alter competitive abilities of host individuals and improve host fitness under stress, but may also become pathogenic. Little is known of the impacts of endophytes on niche-space filling of their hosts