501 research outputs found
Analysis of the Level of Immersion of 360º Video Features Produced by Spanish Media
This paper offers the results of a content analysis on the level of immersion in 360º video features produced by Spanish media. Unlike other conventional ways of storytelling, this new modality provides the viewer with a sensation of being really immerse in a reality that is only being represented, which favors a deeper and more meaningful understanding of it. Our study is divided in three sections. Firstly, we develop a brief theoretical framework that includes the definition and foundations on which immersive feature is based. From this theoretical foundation, we draw a scale to measure the immersion level of these pieces and we confront our proposal to the qualified assessment of 10 experts. Finally we apply this scale on a sample of 148 360º video features produced by Spanish media between January 2015 and December 2017. The aim is to analyze its use and also to infer some good practices that can be useful not only for scholars researching on this new format but also for practitioners producing it.El presente trabajo ofrece los resultados de un análisis de contenido sobre el nivel de inmersión en los vídeos en 360º producidos por medios periodísticos españoles. A diferencia de otras maneras convencionales de contar, esta nueva modalidad genera en el espectador la sensación de encontrarse realmente presente en una realidad que está siendo solo representada. Esto favorece una comprensión más profunda y significativa de ella. Nuestro estudio está dividido en tres secciones. En primer lugar, desarrollamos un breve marco teórico en el que recogemos la definición y fundamentos sobre los que se sostiene el periodismo inmersivo en general y el reportaje en vídeo en 360º en particular. A partir de esta fundamentación, proponemos una escala para medir el nivel de inmersión que hace posible este tipo de piezas y la validamos mediante la evaluación cualificada de un grupo de 10 expertos. Finalmente, aplicamos esta escala sobre una muestra de 148 reportajes en vídeo en 360º publicados por medios periodísticos españoles durante el período comprendido entre enero de 2015 y diciembre de 2017. El objetivo es analizar su uso e inferir una serie de buenas prácticas que puedan resultar de utilidad tanto a académicos que investigan este nuevo formato como a los profesionales que lo producen
Leibniz: Regressus, un cálculo para la Silogística
ResumenEn este trabajo presentamos el cálculo para la Silogística que Leibniz llamó «Regressus». En la sección primera exponemos desde la notación usada por el propio Leibniz hasta el método de producción de los modos no perfectos. En la sección segunda comparamos la «fundamentación» de la Silogística de Leibniz con la que dio Aristóteles. En la sección tercera consideramos la hipótesis de Couturat según la cual se trata de un método cuya única estrategia demostrativa es la reducción al absurdo. En la sección cuarta lo presentamos como un algoritmo de producción de los modos imperfectos de la segunda y tercera figuras. Y concluimos, sección quinta, intentando hacer ver que, si se da «la vuelta» a dicho algoritmo, se obtiene un método de decisión para la Silogística con tres figuras.Palabras claveLeibniz, silogística, Historia de la LógicaAbstractIn this paper we present the calculus for Syllogistic that Leibniz named «Regressus». In the first section we will show the notation used by Leibniz and the method of production of the imperfect moods. In the second section we will compare the ground of Leibniz’s Syllogistic with Aristotle’s. In the third section we will explore Couturat’s hypothesis that holds that it is a method whose only demonstrative strategy is a reductio ad absurdum. In the fourth section we will present it as a production algorithm of the imperfect moods of second and third figures. And we will end, in the fifth section, trying to show that, if we «turn over» that algorithm, we obtain a method of decision for Syllogistic of three figures.KeywordsLeibniz; Syllogistic; History of Logi
Low molecular weight ϵ-caprolactone-pcoumaric acid copolymers as potential biomaterials for skin regeneration applications
ϵ-caprolactone-p-coumaric acid copolymers at different mole ratios (ϵ-caprolactone:p-coumaric acid 1:0, 10:1, 8:1, 6:1, 4:1, and 2:1) were synthesized by melt-polycondensation and using 4-dodecylbenzene sulfonic acid as catalyst. Chemical analysis by NMR and GPC showed that copolyesters were formed with decreasing molecular weight as p-coumaric acid content was increased. Physical characteristics, such as thermal and mechanical properties, as well as water uptake and water permeability, depended on the mole fraction of pcoumaric acid. The p-coumarate repetitive units increased the antioxidant capacity of the copolymers, showing antibacterial activity against the common pathogen Escherichia coli. In addition, all the synthesized copolyesters, except the one with the highest concentration of the phenolic acid, were cytocompatible and hemocompatible, thus becoming potentially useful for skin regeneration applications
Large scale risk-assessment of wind-farms on population viability of a globally endangered long-lived raptor
Wind-farms receive public and governmental support as an alternative energy source mitigating air pollution. However, they can have adverse effects on wildlife, particularly through collision with turbines. Research on wind-farm effects has focused on estimating mortality rates, behavioural changes or interspecific differences in vulnerability. Studies dealing with their effects on endangered or rare species populations are notably scarce. We tested the hypothesis that wind-farms increase extinction probability of long-lived species through increments in mortality rates. For this purpose, we evaluate potential consequences of wind-farms on the population dynamics of a globally endangered long-lived raptor in an area where the species maintains its greatest stronghold and wind-farms are rapidly increasing. Nearly one-third of all breeding territories of our model species are in wind-farm risk zones. Our intensive survey shows that wind-farms decrease survival rates of this species differently depending on individual breeding status. Consistent with population monitoring, population projections showed that all subpopulations and the meta-population are decreasing. However, population sizes and, therefore, time to extinction significantly decreased when wind-farm mortality was included in models. Our results represent a qualitative warning exercise showing how very low reductions in survival of territorial and non-territorial birds associated with wind-farms can strongly impact population viability of long-lived species. This highlights the need for examining long-term impacts of wind-farms rather than focusing on short-term mortality, as is often promoted by power companies and some wildlife agencies. Unlike other non-natural causes of mortality difficult to eradicate or control, wind-farm fatalities can be lowered by powering down or removing risky turbines and/or farms, and by placing them outside areas critical for endangered birds. © 2009 Elsevier Ltd. All rights reserved.Peer Reviewe
Elastic Scattering of 6He on Heavy Targets at Coulomb Barrier Energies
Elastic cross sections for the scattering of 6He projectiles by 208Pb at 27 MeV have been studied. The data have been analyzed within the framework of the Optical Model using Saxon–Woods phenomenological form factors for both the real and imaginary parts of the nuclear potential. The elastic scattering data suggests the presence of a long range absorption mechanisms which might be related to the halo structure of 6He.Ministerio Ciencia y Tecnología FPA2002-04181- C04-04 y FPA2000-1592-C03-0
Hsp90 activity is necessary to acquire a proper neuronal polarization
Chaperones are critical for the folding and regulation of a wide array of cellular proteins. Heat Shock Proteins (Hsps) are the most representative group of chaperones. Hsp90 represents up to 1-2% of soluble protein. Although the Hsp90 role is being studied in neurodegenerative diseases, its role in neuronal differentiation remains mostly unknown. Since neuronal polarity mechanisms depend on local stability and degradation, we asked whether Hsp90 could be a regulator of axonal polarity and growth. Thus, we studied the role of Hsp90 activity in a well established model of cultured hippocampal neurons using an Hsp90 specific inhibitor, 17-AAG. Our present data shows that Hsp90 inhibition at different developmental stages disturbs neuronal polarity formation or axonal elongation. Hsp90 inhibition during the first 3. h in culture promotes multiple axon morphology, while this inhibition after 3. h slows down axonal elongation. Hsp90 inhibition was accompanied by decreased Akt and GSK3 expression, as well as, a reduced Akt activity. In parallel, we detected an alteration of kinesin-1 subcellular distribution. Moreover, these effects were seconded by changes in Hsp70/Hsc70 subcellular localization that seem to compensate the lack of Hsp90 activity. In conclusion, our data strongly suggests that Hsp90 activity is necessary to control the expression, activity or location of specific kinases and motor proteins during the axon specification and axon elongation processes. Even more, our data demonstrate the existence of a >time-window> for axon specification in this model of cultured neurons after which the inhibition of Hsp90 only affects axonal elongation mechanisms. © 2013 Elsevier B.V.Peer Reviewe
Deporte y competencias genéricas en la universidad: diseño y validación del “competest”
The competest is an instrument which has been designed to measure specific generic skills, by means of a self-evaluation, which are useful for the professional development of university students. This test is set within the framework of broader research aimed at collecting evidence to support maximizing the educational potential of sports in present-day university settings, thereby responding to an ever increasing demand for a development in professionalism within the university. The main objective of this article is the metric study of the questionnaire, which is based on a description of the process followed by the design and validation of the content of the competest and a summary of the empirical study done after carrying out a pilot test done with a sampling of 288 Spanish and Mexican university students and graduates, whose average age is 22, with 35.8% males and 64.2% females, together with a high percentage of participants active in sports (80.2%). The results show evidence towards the reliability of the questionnaire (a=0.958) and the concurrent reliability and validity of its items, as well as its usefulness for evaluating the impact in the self-perception of one’s abilities of the practice of sports.El competest es un instrumento diseñado para medir, mediante autoinforme, determinadas competencias genéricas útiles para el desempeño profesional de los universitarios, en el marco de una investigación más amplia que pretende obtener evidencia en la que apoyarse para maximizar el potencial formativo del deporte en la universidad actual, a la que se le demanda una función profesionalizante cada vez más exigente. El objetivo concreto de este artículo es el estudio métrico del cuestionario, que parte de la descripción del proceso seguido para el diseño y validación de contenido del competest y resume el trabajo empírico, realizado a partir de su aplicación piloto a una muestra de 288 universitarios españoles y mexicanos, con una edad media de 22 años, en la que el 35,8% son varones y el 64,2% mujeres, y en la que el 80,2% practica deporte. Los resultados aportan evidencia acerca de la fiabilidad del cuestionario (a=0.958) y la fiabilidad y validez concurrente de sus ítems, así como de su utilidad para evaluar el impacto en la autopercepción competencial de la práctica deportiva
Memoria leida por el Señor Director de la Sociedad Económica de Amigos del País de Santa Cruz de Tenerife acerca de los trabajos de la misma durante el año de 1866
Mención responsabilidad y fecha tomadas del final del text
青春期同理心与不同类型体育活动的关系
This study analyses the relationship between empathy in adolescents and the practice of different types of physical activity.
A total of 727 subjects from two public schools, aged between 12 and 19 years, participated in the study. To assess cognitive and affective empathy, the HIFDS self-report was used and questions from the PAQ-A questionnaire were adapted to obtain data associated with the level and type of physical activity practised. Not only was a statistical analysis and comparison between groups carried out according to gender and physical activity practice, but also, among subgroups according to the physical activity practised.
Female students reported higher levels of affective and cognitive empathy than their male peers. Students who practice artistic physical activities show greater affective and cognitive empathy in comparison with other activities. Likewise, people who practice physical activities show higher values in both empathies compared to “non-practising” people.
In short, adolescents who participate in organised physical activities show greater empathy than their peers who practise free physical activities or do not practise any physical activity, with those of an artistic nature favouring the development of empathy in both dimensions. Furthermore, higher levels of affective and cognitive empathy are observed in female students than in their male peers.El presente estudio analiza la relación entre la empatía en adolescentes y la práctica de distintos tipos de actividad física.
Participaron 727 sujetos con edades comprendidas entre 12 y 19 años, pertenecientes a dos centros educativos públicos. Para evaluar la empatía cognitiva y afectiva se utilizó el autoinforme HIFDS y se adaptaron preguntas del cuestionario PAQ-A para conocer datos asociados al nivel y tipo de actividad física practicada. Se realizó un análisis estadístico y de comparación entre grupos según el género y la práctica de actividad física, así como entre los subgrupos según la actividad física practicada.
Las alumnas mostraron niveles superiores de empatía afectiva y cognitiva respecto de sus compañeros. El alumnado que practica actividades físicas artísticas muestra mayor empatía afectiva y cognitiva estableciendo comparaciones con otras actividades. Asimismo, las personas que practican actividad física muestran mayores valores en ambos tipos de empatía respecto a las personas “no practicantes”.
En definitiva, los y las adolescentes que participan en actividades físicas organizadas muestran mayor empatía que sus compañeros y compañeras que practican actividad física libre o no practican actividad física, siendo las de las de índole artístico favorecedoras del desarrollo de la empatía en ambas dimensiones. Asimismo, se observa niveles más altos de empatía afectiva y cognitiva en las alumnas que en sus compañeros varones.В данном исследовании анализируется взаимосвязь между эмпатией у подростков и практикой различных видов физической активности.
В исследовании приняли участие 727 испытуемых в возрасте от 12 до 19 лет из двух государственных школ. Для оценки когнитивной и аффективной эмпатии использовался опросник HIFDS, а вопросы из опросника PAQ-A были адаптированы для получения данных, связанных с уровнем и видом физической активности. Был проведен статистический анализ и сравнение между группами в зависимости от пола и практики физической активности, а также между подгруппами в зависимости от практикуемой физической активности.
Студенты женского пола показали более высокий уровень аффективной и когнитивной эмпатии, чем их сверстники мужского пола. Студенты, практикующие художественную физическую деятельность, демонстрируют более высокий уровень аффективной и когнитивной эмпатии по сравнению с другими видами деятельности. Аналогично, люди, практикующие физическую активность, показывают более высокие значения обоих типов эмпатии по сравнению с “непрактикующими” людьми.
Вкратце, подростки, участвующие в организованной физической деятельности, демонстрируют более высокую эмпатию, чем их сверстники, которые практикуют свободную физическую активность или не практикуют физическую активность, причем занятия художественной деятельностью благоприятствуют развитию эмпатии в обоих измерениях. Кроме того, более высокие уровни аффективной и когнитивной эмпатии наблюдаются у студенток, чем у их сверстников мужского пола.本研究分析了青少年同理心与不同类型体育活动实践之间的关系。
来自两所公立学校的 727 名年龄在 12 至 19 岁之间的受试者参加了本次研究。为了评估认知和情感同理心,我们使用了HIFDS自我报告,并对 PAQ-A 问卷中的问题进行了调整,以获得与所进行的体育活动水平和类型相关的数据。根据性别和体育活动的实践在组之间以及根据体力活动的亚组之间进行统计和比较分析。
与同龄人相比,女学生表现出更高水平的情感和认知同理心。与从事其他活动的同学比较,从事艺术体育活动的学生表现出更强的情感和认知同理心。同样,与“不锻炼”的人相比,锻炼身体的人在这两种同理心上都表现出更高的价值。
具体来说,参加有组织的体育活动的青少年比参加自由体育活动或不参加体育活动的同龄人表现出更强的同理心,而具有艺术性质的青少年则更倾向于在两个维度上发展同理心。同样,女性学生的情感和认知同理心水平高于男性同龄人
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