La cultura histórica como práctica interdisciplinaria en la formación del profesional

Este trabajo examina la importancia y necesidad en la práctica pedagógica para la enseñanza de la historia de una concepción interdisciplinaria, develándose las relaciones que permiten sus  potencialidades para la formación de la cultura histórica al abordar los procesos históricos en interacción con diferentes espacios de la cultura acumulada. Estos elementos están presentes en otras disciplinas didácticas y existen suficientes campos para esas interrelaciones; encontrarlas desde la docencia se constituye en un requerimiento metodológico de obligada observancia

Phase change slurries for cooling and storage: an overview of research trends and gaps

Phase change slurries (PCSs) have great potential as both a heat transfer fluid and an energy storage medium for cooling processes, cold energy storage, and cold energy transportation due to desirable thermophysical properties. One of the major benefits of PCSs compared to pure phase change materials is their fluidity, thus making them cooled or heated by a heat exchanger, pumped through pipes, discharged, and stored directly in a thermal energy storage tank. The use of encapsulated phase change slurries and gas hydrate slurry has thus attracted considerable interest as reflected in the literature with a rising number of publications and institutions involved in the area. The use of bibliometric techniques has found a recent interest in the literature to define the progress of different scientific topics and inspire researchers to identify novelties. In this paper, bibliometric analysis and a detailed systematic review are carried out to show the state-of-the-art development of PCSs for cooling applications. Research gaps and hotspots are identified to help define future perspectives on this topic

La educación económica desde la enseñanza de la historia para la formación de la cultura económica

El trabajo se centra en los fundamentos teóricos que sustentan las orientaciones metodológicas para el desarrollo de acciones didácticas a emprender desde la enseñanza de la historia de Cuba en la formación del profesional universitario desde la dimensión curricular con carácter interdisciplinario y de sistematización de las ciencias sociales, para que el alumnado desde su realidad asuma un rol protagónico ante posibilidades para identificar problemas económicos, discernir el origen de estos y establecer las coincidencias y diferencias en esa relación de lo general y lo particular, logrando además, alcanzar la capacidad de elección de vías alternativas y posibilidades de solución, rebatir tesis, ofrecerlas y defenderlas lo cual favorecerá la formación de una cultura económica en los estudiantes como parte esencial para el logro de una cultura general integral

La cultura histórica como práctica interdisciplinaria en la formación del profesional

It works examines the importance and in practice pedagogic need for the teaching of the history of an interdisciplinary conception, by showing the relations they permit your potentialities for the formation of the historical culture when approaching the historical processes in interaction with different spaces of the accumulated culture. These elements are present in other didactics discipline and exist sufficient fields for theses interrelacioneses; to find them from the teaching it assumes the position of a methodological request of obliged observance.Este trabajo examina la importancia y necesidad en la práctica pedagógica para la enseñanza de la historia de una concepción interdisciplinaria, develándose las relaciones que permiten sus  potencialidades para la formación de la cultura histórica al abordar los procesos históricos en interacción con diferentes espacios de la cultura acumulada. Estos elementos están presentes en otras disciplinas didácticas y existen suficientes campos para esas interrelaciones; encontrarlas desde la docencia se constituye en un requerimiento metodológico de obligada observancia

Application of Nanofluids in Improving the Performance of Double-Pipe Heat Exchangers—A Critical Review

Nanofluids can be employed as one of the two fluids needed to improve heat exchanger performance due to their improved thermal and rheological properties. In this review, the impact of nanoparticles on nanofluid properties is discussed by analyzing factors such as the concentration, size, and shape of nanoparticles. Nanofluid thermophysical properties and flow rate directly influence the heat transfer coefficient and pressure drop. High thermal conductivity nanoparticles improve the heat transfer coefficient; in particular, metallic oxide (such as MgO, TiO2, and ZnO) nanoparticles show greater enhancement of this property by up to 30% compared to the base fluid. Nanoparticle size and shape are other factors to consider as well, e.g., a significant difference in thermal conductivity enhancement from 6.41% to 9.73% could be achieved by decreasing the Al2O3 nanoparticle size from 90 to 10 nm, affecting nanofluid viscosity and density. In addition, equations to determine the heat transfer rate and the pressure drop in a double-pipe heat exchanger are presented. It was established that the main factor that directly influences the heat transfer coefficient is the nanofluid thermal conductivity, and nanofluid viscosity affects the pressure drop

Trainable COPE Features for Sound Event Detection

Systems for automatic analysis of sounds and detection of events are of great importance as they can be used as substitutes of or complement to video analytic systems. In this paper we describe a flexible system for the detection of audio events based on the use of trainable COPE (Combination of Peaks of Energy) features. The structure of a COPE feature is determined in an automatic configuration process on a single prototype example. Thus, they can be adapted to different kinds of sounds of interest. We configure a set of COPE features in order to account for robustness to variations of the characteristics of sounds within a specific class. The proposed system is flexible as new features (also configured on examples drawn from new classes) can be easily added to the feature set. We performed experiments on the MIVIA road events data set for road surveillance applications and compared the results that we achieved with the ones of other existing methods