3,695 research outputs found

    Research, Experts and Building Solidarity

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    [Excerpt] The message read, Be in Atlanta for emergency meeting of unions with Eastern and was signed by Charlie Bryan. The contract we had won with Eastern now had to be defended against the banks to whom Eastern owed so much money. In Atlanta we listened to a very somber Frank [Excerpt] Borman describe how the banks, led by Chase Manhattan and Citibank, were refusing to roll over loans that were coming due. The bankers insisted that Borman win concessions from us by June 21 or Eastern would be thrown into technical default

    Determining heating time scales in solar active region cores from AIA/SDO Fe XVIII images

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    We present a study of the frequency of transient brightenings in the core of solar active regions as observed in the Fe XVIII line component of AIA/SDO 94 A filter images. The Fe XVIII emission is isolated using an empirical correction to remove the contribution of "warm" emission to this channel. Comparing with simultaneous observations from EIS/Hinode, we find that the variability observed in Fe XVIII is strongly correlated with the emission from lines formed at similar temperatures. We examine the evolution of loops in the cores of active regions at various stages of evolution. Using a newly developed event detection algorithm we characterize the distribution of event frequency, duration, and magnitude in these active regions. These distributions are similar for regions of similar age and show a consistent pattern as the regions age. This suggests that these characteristics are important constraints for models of solar active regions. We find that the typical frequency of the intensity fluctuations is about 1400s for any given line-of-sight, i.e. about 2-3 events per hour. Using the EBTEL 0D hydrodynamic model, however, we show that this only sets a lower limit on the heating frequency along that line-of-sight.Comment: Submitted to Ap

    Temporal Variability of Active Region Outflows

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    Recent observations from the Extreme-ultraviolet Imaging Spectrometer (EIS) on board Hinode have shown that low density areas on the periphery of active regions are characterized by strong blue-shifts at 1 MK. These Doppler shifts have been associated with outward propagating disturbances observed with Extreme-ultraviolet and soft X-ray imagers. Since these instruments can have broad temperature responses we investigate these intensity fluctuations using the monochromatic imaging capabilities of EIS and confirm their 1 MK nature. We also find that the Fe XII 195.119 A blue shifted spectral profiles at their footpoints exhibit transient blue wing enhancements on timescales as short as the 5 minute cadence. We have also looked at the fan peripheral loops observed at 0.6 MK in Si VII 275.368 A in those regions and find no sign of the recurrent outward propagating disturbances with velocities of 40 - 130 km/s seen in Fe XII. We do observe downward trends (15 - 20 km/s) consistent with the characteristic red-shifts measured at their footpoints. We, therefore, find no evidence that the structures at these two temperatures and the intensity fluctuations they exhibit are related to one another.Comment: Movies are available at http://tcrb.nrl.navy.mil/~iuu/out/papers/2010_flows/. To be submitted to Ap

    Intervención psicológica para la detección y manejo de estilos atribucionales en dos deportes de motor : rally de automóviles y karting competitivo

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    Traditionally, Sport Psychology has promoted the idea that athletes must attribute their performances to internal causes to facilitate their involvement in the sport in question. This study provides an exploratory view of the attributional style predominating in a sample of 22 athletes who practice two motor disciplines. The results indicate the prevalence of an external style of attribution in successful sports situations as well as in unsuccessful situations. This paper also provides a description of the main causes of good performance that were identified as well as several intervention suggestions, beginning with the real influence of external factors on an athlete's performance, considering the specific characteristics of these kind of discipline

    Evaluación de la efectividad del entrenamiento de estrategias de afrontamiento en el nivel de ansiedad precompetitiva en tenimesistas

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    The study evaluated the effectiveness of three coping strategies aimed at overcoming competition anxiety in table tennis players. 60 players aged between 13 and 18 years old (M = 14,7) participated in the study, divided into four groups: a control group (n = 17), diaphragmatic breathing (n = 15), scan relaxation (n = 13) and self-dialogue (n = 15). The participants answered the State Trait Anxiety Inventory before and after the psychological training programme and also one month later. The self-dialogue and diaphragmatic breathing groups displayed significant differences in relation to the control group. No significant differences were found between the scan relaxation group and control group, except in the post-test evaluation.El estudio evaluó la efectividad de tres estrategias de afrontamiento sobre la ansiedad competitiva en jugadores de tenis de mesa. El grupo estuvo compuesto por 60 deportistas, de edad entre 13 y 18 años (M = 14.7), divididos en cuatro grupos: Grupo Control (n = 17), Respiración Diafragmática (n = 15), Relajación de Escaneo (n = 13) y Autodiálogo (n = 15 sujetos) quienes completaron el Inventario de Ansiedad Estado-Rasgo antes y después del entrenamiento psicológico y un mes después de finalizado éste. Los grupos de Autodiálogo y Respiración Diafragmática presentan diferencias significativas respecto al grupo control. No se apreciaron diferencias entre el grupo de técnica de Relajación de Escaneo y el Grupo Control excepto en el post-test.O estudo avaliou a efectividade de três estratégias de confronto sobre a ansiedade competitiva em jogadores de ténis de mesa. A amostra foi composta por 60 desportistas, com idades compreendidas entre os 13 e os 18 anos (M = 14.7), divididos em quatro grupos: Grupo de Controlo (n = 17), Respiração Diafragmática (n = 15), Relaxamento (n = 13) e Discurso Interno (n = 15) que completaram o Questionário de Ansiedade Estado-Traço antes e depois do treino psicológico e um mês depois deste ter finalizado. Os grupos de Discurso Interno e Respiração Diafragmática apresentaram diferenças significativas relativamente ao Grupo de Controlo. Não se verificaram diferenças entre o grupo de técnica de Relaxamento e o Grupo de Controlo, excepto no pós-teste

    Management of the ecosystems of rivers with European mink

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    [Resumo] O obxectivo do proxecto é a recuperación ecolóxica dos tramos baixos dos ríos Arga e Aragón en Navarra, a zona de maior densidade de visón europeo de Europa Occidental. Está baseado en tres piares: Protección, conservación e monitorización da poboación de visón europeo; Creación e restauración de hábitats de visón europeo e Sensibilización e divulgación[Abstract] The objective of this Project is the ecological recovery of the lower parts of the rivers Arga and Aragón in Navarre, the area of greatest density of the European mink in Western Europe. This is bases on three mainstays: Creation and restoration of the natural habitat of the European mink and Informing the public opinion and Informatio

    Pequeño deseo

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