Asteroseismology of delta Scuti stars in open clusters: Praesepe

The present paper provides a general overview of the asteroseismic potential of delta Scuti stars in clusters, in particular focusing on convection diagnostics. We give a summarise of the last results obtained by the authors for the Praesepe cluster of which five delta Scuti stars are analysed. In that work, linear analysis is confronted with observations, using refined descriptions for the effects of rotation on the determination of the global stellar parameters and on the adiabatic oscillation frequency computations. A single, complete, and coherent solution for all the selected stars is found, which lead the authors to find important restrictions to the convection description for a certain range of effective temperatures. Furthermore, the method used allowed to give an estimate of the global parameters of the selected stars and constrain the cluster.Comment: 6 pages, 1 figure. Accepted for publication in Communications in Asteroseismolog

Competitive behavior and specialization of the Andalusian trade in the period 1999-2009

Hemos tratado de comprobar, no sólo los cambios generales y tendencias que se han producido en las exportaciones andaluzas desde 1999 a 2009, sino también, aquellos que tienen que ver con la relación entre sectores que aumentan su penetración real en los mercados y que se han comportado de forma competitiva, y su relación con los cambios en la especialización exportadora, para relacionar dichos cambios con los que pueden estar sucediendo en la estructura productiva, comprobando el papel que han desempeñado las provincias.We have tried to verify, not only the general changes and trends that have taken place in the Andalusian exports from 1999 to 2009, but also, those that they have to see with the relation between sectors that increase his royal penetration the markets and that they have endured of competitive form, and his relation with the changes in the exporting specialization, to relate the above mentioned changes with which they can be happening in the productive structure, verifying the paper(role) that the provinces have recovered(played)

The export competitiveness of social enterprises as compared to with export SMEs

Purpose – This study aims to determine the export competitiveness of the Social Economy in Andalusia, this is carried out by quantifying the export competitiveness of the internationalized enterprises of the Social Economy in the export sector of the region. Design/methodology/approach – The strengths and weaknesses of this business sector are quantified and the Rasch´s Probability. It is a model used to measure the latent variable called export competitiveness, which is defined by items (factors): size, cooperation, number of target markets, competitive advantages, years abroad and percentage of sales abroad. The article provides empirical evidence of 362 Andalusian export enterprises. Findings – The results show that the export competitiveness of social enterprises reflected their strengths as compared with other SMEs. Originality/value – This concept paper empirically combines two different fields of knowledge (design and behavior of companies) in the construction of the foreign trade. This work standardizes the treatment of two descriptors scarcely discussed in the literature: Social Enterprises and Export

Performance Of The High Speed Rail In Spain In The Context Of The New Regulation Framework. Evidence From The Madrid-Seville Hsr Corridor

The ambitious planned development of the high-speed rail (HSR) network in Spain requires the implementation of new sector regulations to fully achieve its objectives, namely to make the sector more competitive and to promote a more balanced and efficient transport system. For this purpose, the Spanish administration recently launched the new Rail Sector Act (39/2003), on a national regulatory framework. The planned liberalisation process foresees the end of the monopoly of the Spanish state operator RENFE, opening up passenger transport to new rail operators by 2010. On a European level, this new regulatory framework comes in line with EU’s concerns both on transport service performance and on infrastructure development. On the one hand, European regulations have focused in measures to guarantee quality of service, equal access and effective competition market rules. On the other, the relevance of the development of HSR projects in the Iberian peninsula is proved with their inclusion among the priority projects of the trans-European networks (TEN).Institute of Transport and Logistics Studies. Faculty of Economics and Business. The University of Sydne

La Economía Social Exportadora de Sevilla: Un análisis exploratorio

Andalucía ha mostrado en los últimos años su dinamismo exportador además de experimentar un incremento del peso de la economía social en su PIB. Este artículo comprueba el aumento de las exportaciones andaluzas y demuestra que la internacionalización es una necesidad competitiva. Nos centraremos en cómo las empresas de economía social conforman un sector revelador en este sentido, destacando la provincia de Sevilla por sostener el mayor peso de empresas de la economía social andaluza y una parte distinguida del tejido exportador regional. A causa del desconocimiento de la influencia de este sector en el crecimiento y la inexistencia de bases de datos relacionales que permitan conocer cómo opera la economía social andaluza, nuestro objetivo ha sido profundizar en la evolución de la actividad exportadora regional, desde una visión retrospectiva, y, más concretamente, en el desempeño exportador de la economía social sevillana

Relationship between anthropometric parameters, physiological responses, routes and competition results in formula windsurfing

Formula windsurfing is faster than the Olympic version, due to anumber of unique differences. This study was designed to identify the importance of anthropometric and cardiac factors on the final result of the European Formula Windsurf Championships (2007). We selected 45 competitors (30 amateurs and 15 professionals) of 30±9.77 years of age, a height of 182.6±0.06 cm, a weight of 81.67±7.35 kg and a BMIof 24.7±2.1 kg. They were divided into three groups (PG: 15; TG: 45and GPSG: 12). We followed the recommendations of Carter and Marfell-Jones for the anthropometric measurements. The route, speed, distance and heart rate were recorded using an FRWD W600 GPS (Global Positioning System) unit. The anthropometric measurements indicate a professional profile with 2.3±0.4 endomorphy 5±0.8 mesomorphy and 2.4±0.6 ectomorphy. Arm span and fat mass show a significant (p≤0.02) and very significant (p≤0.005) correlation with the final classification. The average speed was 11.84±2.38 km·h–1, the heart rate varied from 128 to 180 b·min–1 and the average was 127.62±13.73 b·min–1. The distances covered (12784.77±5522.19 m) and the times used for the races (2049.3±989.68 s) were very variable. This will assist not only in initial selection for the sport, but also in the design of training programmes which further develop that morphology, where possible, in the pursuit of improved performance

A web application for the unspecific detection of differentially expressed DNA regions in strand-specific expression data

Genomic technologies allow laboratories to produce large-scale data sets, either through the use of next-generation sequencing or microarray platforms. To explore these data sets and obtain máximum value from the data, researchers view their results alongside all the known features of a given reference genome. To study transcriptional changes that occur under a given condition, researchers search for regions of the genome that are differentially expressed between different experimental conditions. In order to identify these regions several algorithms have been developed over the years, along with some bioinformatic platforms that enable their use. However, currently available applications for comparative microarray analysis exclusively focus on changes in gene expression within known transcribed regions of predicted proteincoding genes, the changes that occur in non-predictable genetic elements, such as non-coding RNAs. Here, we present a web application for the visualization of strand-specific tiling microarray or next-generation sequencing data that allows customized detection of differentially expressed regions all along the genome in an unspecific manner, that allows identification of all RNA sequences, predictable or no

Perturbación eléctrica y térmica provocada por sensores de temperatura en estudios preclínicos de ablación cardiaca por radiofrecuencia

La ablación cardiaca por radiofrecuencia (RF) es una terapia de gran relevancia para tratar las arritmias cardiacas. Con la RF se consigue calentar un tejido de forma muy precisa, y generar un daño irreversible él, impidiendo la activación de esas células, y permitiendo eliminar focos arrítmicos y aislar estructuras. El diseño y desarrollo de esta tecnología requiere realizar ensayos preclínicos. Frecuentemente, se emplean ensayos ex vivo con muestras de tejido biológico para determinar el tamaño y forma de las lesiones y las temperaturas alcanzadas. El objetivo de este estudio es averiguar si los sensores de temperatura posicionados en el interior del tejido durante dichos ensayos producen alguna perturbación. Se construyó un modelo computacional 3D incluyendo una porción de tejido cardiaco, y se analizaron las temperaturas alcanzadas. Se modelaron dos tipos de sensores de temperatura (termopares y fibra óptica) en distintas localizaciones. Mientras que las fibras ópticas apenas provocan perturbaciones (desviaciones menores de 0.6ºC), la presencia de los termopares altera de forma importante la medida (diferencias de hasta 9.78ºC). Sugerimos que la causa es el propio material metálico de los cables del termopar, que actúa como disipador térmico. Pese a todo, el tamaño y forma de la lesión inducida por RF no parece estar afectado por la presencia de cualquiera de los dos sensores.Proyecto financiado por el Ministerio de Ciencia e Innovación, Agencia Estatal de Investigación, Fondo Europeo de Desarrollo Regional (MCIN/AEI/10.13039/501100011033/FEDER,UE) con referencias PID2022-136273OB-C31 y PID2022- 136273OA-C33