Analysis and comparison of competitive balance in the Spanish ACB basketball league : a preliminary study

Regardless its relevance in sports economics, competitive balance has not been studied neither in Spanish nor in European professional basketball. In this preliminary study we measured the competitive balance in the Spanish ACB League from seasons 1983/1984 to 2003/2004 using the well-known winning percentage standard deviation index. Results showed great difference between seasons and a general low competitive balance index. In addition, tournament designing did not seem to affect the competitive balance in ACB

UV Dichroism in Vertically Aligned Nematic Displays

Vertically aligned negative nematics are employed in high-end projection applications, where extremely high light fluxes are employed. Under these conditions, the UV photochemical stability of the material becomes an issue that must be included in the characterization process of such devices. Photochemical aging tests for vertically aligned microdisplay, however, must take into account the linear dichroism shown by the liquid crystal material upon switching. In this work a method to evaluate UV linear dichroism is described. The method is included in a comparative study of the electrooptical performance of two negative nematic mixtures, one experimental and one commercial

Metarradio as a teaching resource in primary education. Radio in the classroom programme proposal

Este artículo analiza la adecuación del nuevo ecosistema radiofónico conceptualizado como metarradio al desarrollo de los contenidos curriculares en la enseñanza reglada de educación primaria. El análisis se realiza a partir de un programa radiofónico con la intervención de los escolares, desarrollado en cinco fases diferentes y donde se han formulado una serie de variables para la evaluación de los diferentes elementos estudiados. Los resultados señalan que esta iniciativa resulta bastante adecuada para la consecución de los estándares de aprendizaje evaluados y también favorece el conocimiento de la configuración del nuevo ecosistema mediático.This article analyzes the adequacy of the new radio ecosystem defined as metaradio to the development of the curricular contents within the current education law given for primary education. The analysis is made by a radio program with the intervention of children from school, developed in five different phases and where a series of variables have been formulated for the evaluation of the different elements studied. The results indicate that this initiative highly contributes to the achievement of the evaluated learning standards and offers to the students an adequate knowledge of the configuration of the new media ecosystem.Facultad de Periodismo y Comunicación Socia

Metarradio as a teaching resource in primary education. Radio in the classroom programme proposal

This article analyzes the adequacy of the new radio ecosystem defined as metaradio to the development of the curricular contents within the current education law given for primary education. The analysis is made by a radio program with the intervention of children from school, developed in five different phases and where a series of variables have been formulated for the evaluation of the different elements studied. The results indicate that this initiative highly contributes to the achievement of the evaluated learning standards and offers to the students an adequate knowledge of the configuration of the new media ecosystem.Este artículo analiza la adecuación del nuevo ecosistema radiofónico conceptualizado como metarradio al desarrollo de los contenidos curriculares en la enseñanza reglada de educación primaria. El análisis se realiza a partir de un programa radiofónico con la intervención de los escolares, desarrollado en cinco fases diferentes y donde se han formulado una serie de variables para la evaluación de los diferentes elementos estudiados. Los resultados señalan que esta iniciativa resulta bastante adecuada para la consecución de los estándares de aprendizaje evaluados y también favorece el conocimiento de la configuración del nuevo ecosistema mediático

Metarradio as a teaching resource in primary education. Radio in the classroom programme proposal

Este artículo analiza la adecuación del nuevo ecosistema radiofónico conceptualizado como metarradio al desarrollo de los contenidos curriculares en la enseñanza reglada de educación primaria. El análisis se realiza a partir de un programa radiofónico con la intervención de los escolares, desarrollado en cinco fases diferentes y donde se han formulado una serie de variables para la evaluación de los diferentes elementos estudiados. Los resultados señalan que esta iniciativa resulta bastante adecuada para la consecución de los estándares de aprendizaje evaluados y también favorece el conocimiento de la configuración del nuevo ecosistema mediático.This article analyzes the adequacy of the new radio ecosystem defined as metaradio to the development of the curricular contents within the current education law given for primary education. The analysis is made by a radio program with the intervention of children from school, developed in five different phases and where a series of variables have been formulated for the evaluation of the different elements studied. The results indicate that this initiative highly contributes to the achievement of the evaluated learning standards and offers to the students an adequate knowledge of the configuration of the new media ecosystem.Facultad de Periodismo y Comunicación Socia

Metarradio as a teaching resource in primary education. Radio in the classroom programme proposal

Este artículo analiza la adecuación del nuevo ecosistema radiofónico conceptualizado como metarradio al desarrollo de los contenidos curriculares en la enseñanza reglada de educación primaria. El análisis se realiza a partir de un programa radiofónico con la intervención de los escolares, desarrollado en cinco fases diferentes y donde se han formulado una serie de variables para la evaluación de los diferentes elementos estudiados. Los resultados señalan que esta iniciativa resulta bastante adecuada para la consecución de los estándares de aprendizaje evaluados y también favorece el conocimiento de la configuración del nuevo ecosistema mediático.This article analyzes the adequacy of the new radio ecosystem defined as metaradio to the development of the curricular contents within the current education law given for primary education. The analysis is made by a radio program with the intervention of children from school, developed in five different phases and where a series of variables have been formulated for the evaluation of the different elements studied. The results indicate that this initiative highly contributes to the achievement of the evaluated learning standards and offers to the students an adequate knowledge of the configuration of the new media ecosystem.Facultad de Periodismo y Comunicación Socia

Influencia de la competencia lingüística del profesorado en la implantación AICLE en Educación Física

The aim of this paper was to know the influence of the qualification level in the second foreign language in order to see the differences in teacher perception in Bilingual Physical Education classes (AICLE). For this, 146 active teachers in Physical Education participated in the present study, to whom the Physical Education Session Evaluation questionnaire (CESEFA) was administered through. Effects based on the sex of the participants and age category were also checked. The analysis of results showed that the participants who had a C1 level of English had a more positive perception of all categories analyzed. In turn, no differences were found based on the sex of the participants, but were found based on the age category, finding that those under 36 with a B2 level had a better perception of their classes in the items: take advantage of breaks, adaptation of content and feedback. It is concluded that the degree of qualification influences the perception of Physical Education classes, and that in the case of the youngest subjects, there are elements related to the individual efficacy variable, where no differences were found according to the degree of qualification or even these are positive in favor of level B2.El objetivo de este trabajo fue conocer la influencia del nivel de calificación en la segunda lengua extranjera para ver las diferencias en la percepción del profesorado en las clases de Educación Física Bilingüe (AICLE). Para ello, en el presente estudio participaron 146 profesores activos de Educación Física, a quienes se les aplicó el cuestionario de Evaluación de Sesiones de Educación Física (CESEFA). También se comprobaron los efectos según el sexo de los participantes y la categoría de edad. El análisis de resultados mostró que los participantes que tenían un nivel C1 de inglés tenían una percepción más positiva de todas las categorías analizadas. A su vez, no se encontraron diferencias según el sexo de los participantes, pero sí según la categoría de edad, encontrando que los menores de 36 años con un nivel B2 tuvieron una mejor percepción de sus clases en los ítems: aprovechar descansos, adaptación de contenido y comentarios. Se concluye que el grado de calificación influye en la percepción de las clases de Educación Física, y que en el caso de los sujetos más jóvenes existen elementos relacionados con la variable eficacia individual

Influencia de la competencia lingüística del profesorado en la implantación AICLE en Educación Física

The aim of this paper was to know the influence of the qualification level in the second foreign language in order to see the differences in teacher perception in Bilingual Physical Education classes (AICLE). For this, 146 active teachers in Physical Education participated in the present study, to whom the Physical Education Session Evaluation questionnaire (CESEFA) was administered through. Effects based on the sex of the participants and age category were also checked. The analysis of results showed that the participants who had a C1 level of English had a more positive perception of all categories analyzed. In turn, no differences were found based on the sex of the participants, but were found based on the age category, finding that those under 36 with a B2 level had a better perception of their classes in the items: take advantage of breaks, adaptation of content and feedback. It is concluded that the degree of qualification influences the perception of Physical Education classes, and that in the case of the youngest subjects, there are elements related to the individual efficacy variable, where no differences were found according to the degree of qualification or even these are positive in favor of level B2El objetivo de este trabajo fue conocer la influencia del nivel de calificación en la segunda lengua extranjera para ver las diferencias en la percepción del profesorado en las clases de Educación Física Bilingüe (AICLE). Para ello, en el presente estudio participaron 146 profesores activos de Educación Física, a quienes se les aplicó el cuestionario de Evaluación de Sesiones de Educación Física (CESEFA). También se comprobaron los efectos según el sexo de los participantes y la categoría de edad. El análisis de resultados mostró que los participantes que tenían un nivel C1 de inglés tenían una percepción más positiva de todas las categorías analizadas. A su vez, no se encontraron diferencias según el sexo de los participantes, pero sí según la categoría de edad, encontrando que los menores de 36 años con un nivel B2 tuvieron una mejor percepción de sus clases en los ítems: aprovechar descansos, adaptación de contenido y comentarios. Se concluye que el grado de calificación influye en la percepción de las clases de Educación Física, y que en el caso de los sujetos más jóvenes existen elementos relacionados con la variable eficacia individual, donde no se encontraron diferencias según el grado de calificación o incluso estos son positivos a favor del nivel B2.

Mechanical analysis of Genoa 03 stirling engine

Due to the new technologies development based on renewable sources of energy, in recent years Stirling engines have become very important in the energetic sector. Many of them do not allow the use of fluid lubricants and, thus, the effect of friction losses is important. For this purpose, a mathematical model has been developed based on the force balance in the crankshaft using the pressure distribution in the cylinders. The aim of this work is to characterize the mechanical losses in a Genoa 03 Stirling engine using a numerical model and experimentally via the drag method. The results of this model have been compared with those obtained experimentally on Genoa 03 Stirling engine. In the experimental results, a proportional increase in friction torque due to the average pressure and the speed of the crankshaft is observed. The first of these is caused by an increase of dry friction forces and the second, by the viscous friction between the working fluid and the inner walls of the engine. Also in this paper, irreversible processes in a beta type Stirling engine have been investigated in order to highlight the impact of losses on mechanical power and its performance. This article develops the first study of the mechanical losses of Genoa 03 experimental Stirling engine, which has an output power of 3 kW. Although the model response follows the same trends as the experiments, those simplifications provide errors which become more significant as the engine speed increases.Ministerio de Economía y Competitividad ENE2013-43465-

Potential of Supercritical Carbon Dioxide Power Cycles to Reduce the Levelised Cost of Electricity of Contemporary Concentrated Solar Power Plants

This paper provides an assessment of the expected Levelised Cost of Electricity enabled by Concentrated Solar Power plants based on Supercritical Carbon Dioxide (sCO2) technology. A global approach is presented, relying on previous results by the authors in order to ascertain whether these innovative power cycles have the potential to achieve the very low costs of electricity reported in the literature. From a previous thermodynamic analysis of sCO2 cycles, three layouts are shortlisted and their installation costs are compared prior to assessing the corresponding cost of electricity. Amongst them, the Transcritical layout is then discarded due to the virtually impossible implementation in locations with high ambient temperature. The remaining layouts, Allam and Partial Cooling are then modelled and their Levelised Cost of Electricity is calculated for a number of cases and two different locations in North America. Each case is characterised by a different dispatch control scheme and set of financial assumptions. A Concentrated Solar Power plant based on steam turbine technology is also added to the assessment for the sake of comparison. The analysis yields electricity costs varying in the range from 8 to over 11 g/kWh, which is near but definitely not below the 6 g/kWh target set forth by different administrations. Nevertheless, in spite of the results, a review of the conservative assumptions adopted in the analysis suggests that attaining costs substantially lower than this is very likely. In other words, the results presented in this paper can be taken as an upper limit of the economic performance attainable by Supercritical Carbon Dioxide in Concentrated Solar Power applications.Unión Europea (Programa Horizonte 2020) 81498