TY - JOUR A1 - Torres, D. F. A1 - Romero, G. E. A1 - Eiroa, E. F. A1 - Wambsganß, Joachim A1 - Pessah, M. E. T1 - Gravitational microlensing of gamma-ray blazars N2 - We present a detailed study of the effects of gravitational microlensing on compact and distant gamma-ray blazars. These objects have gamma-ray-emitting regions that are small enough to be affected by microlensing effects produced by stars lying in intermediate galaxies. We compute the gravitational magnification taking into account effects of the lensing and show that, whereas the innermost gamma-ray spheres can be significantly magnified, there is little magnification either for very high gamma-ray energies or for lower (radio) frequencies (because these wavelengths are emitted from larger regions). We analyse the temporal evolution of the gamma-ray magnification for sources moving in a caustic pattern field, where the combined effects of thousands of stars are taken into account using a numerical technique. We propose that some of the unidentified gamma-ray sources (particularly some of those lying at high galactic latitude with gamma-ray statistical properties that are very similar to detected gamma-ray blazars) are indeed the result of gravitational lensing magnification of background undetected active galactic nuclei (AGN). This is partly supported from a statistical point of view: we show herein as well, using the latest information from the third EGRET catalogue, that high-latitude gamma-ray sources have similar averaged properties to already detected gamma-ray AGN. Some differences between both samples, regarding the mean flux level, could also be understood within the lensing model. With an adequate selection of lensing parameters, it is possible to explain a variety of gamma-ray light curves with different time-scales, including non-variable sources. The absence of strong radio counterparts could be naturally explained by differential magnification in the extended source formalism. Y1 - 2003 ER - TY - JOUR A1 - Rodríguez-Quiles y García, José A. A1 - Soria Torres, Carmen M. T1 - Musique et Communautés d’Apprentissage JF - Potsdamer Schriftenreihe zur Musikpädagogik Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-433858 IS - 7 SP - 93 EP - 114 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - JOUR A1 - González-Fortes, Gloria M. A1 - Kolbe, Ben A1 - Fernandes, Daniel A1 - Meleg, Ioana N. A1 - Garcia-Vazquez, Ana A1 - Pinto-Llona, Ana C. A1 - Constantin, Silviu A1 - de Torres, Trino J. A1 - Ortiz, Jose E. A1 - Frischauf, Christine A1 - Rabeder, Gernot A1 - Hofreiter, Michael A1 - Barlow, Axel T1 - Ancient DNA reveals differences in behaviour and sociality between brown bears and extinct cave bears JF - Molecular ecology N2 - Ancient DNA studies have revolutionized the study of extinct species and populations, providing insights on phylogeny, phylogeography, admixture and demographic history. However, inferences on behaviour and sociality have been far less frequent. Here, we investigate the complete mitochondrial genomes of extinct Late Pleistocene cave bears and middle Holocene brown bears that each inhabited multiple geographically proximate caves in northern Spain. In cave bears, we find that, although most caves were occupied simultaneously, each cave almost exclusively contains a unique lineage of closely related haplotypes. This remarkable pattern suggests extreme fidelity to their birth site in cave bears, best described as homing behaviour, and that cave bears formed stable maternal social groups at least for hibernation. In contrast, brown bears do not show any strong association of mitochondrial lineage and cave, suggesting that these two closely related species differed in aspects of their behaviour and sociality. This difference is likely to have contributed to cave bear extinction, which occurred at a time in which competition for caves between bears and humans was likely intense and the ability to rapidly colonize new hibernation sites would have been crucial for the survival of a species so dependent on caves for hibernation as cave bears. Our study demonstrates the potential of ancient DNA to uncover patterns of behaviour and sociality in ancient species and populations, even those that went extinct many tens of thousands of years ago. KW - ancient DNA KW - extinction KW - homing KW - sociality KW - Ursus arctos KW - Ursus spelaeus Y1 - 2016 U6 - https://doi.org/10.1111/mec.13800 SN - 0962-1083 SN - 1365-294X VL - 25 SP - 4907 EP - 4918 PB - Wiley-Blackwell CY - Hoboken ER - TY - BOOK A1 - Rodríguez-Quiles y García, José A. A1 - Habib, Michel A1 - Bidal-Loton, Marie-Pierre A1 - Leveau, Nicolas A1 - Tassin, Martine A1 - Verlinden, Dominique A1 - Soria Torres, Carmen M. A1 - Hoonhorst, Ingrid A1 - Vancamp, Marielle A1 - Dormoy, Alice A1 - De Barelli, Tatiana ED - Rodríguez-Quiles y García, José A. T1 - Bienfaits de la musique á l'école T1 - Beneficios de la música en la escuela T1 - Benefits of music at school T1 - Vorzüge der Musik in der Schule BT - une expérience européenne BT - una experiencia europea BT - a European experience BT - eine europäische Erfahrung N2 - A l'heure où l'éducation musicale est remise en cause par les décideurs de certains pays de l'Union européenne, la collaboration internationale et interdisciplinaire est plus que jamais nécessaire pour démontrer l'erreur de ces attitudes. A cette fin, l'ouvrage rassemble les réflexions de différents spécialistes de trois pays européens qui offrent leurs points de vue sous le prisme de l'éducation musicale mais aussi des domaines des neurosciences, de la psychologie, de la logopédie et de la politique. Cette publication combine les résultats de travaux empiriques avec des propositions pratiques, ce qui la rend utile pour les chercheurs, les professeurs de musique et les orthophonistes. N2 - En unos tiempos en los que la educación musical viene siendo cuestionada por los responsables de las políticas educativas de ciertos países de la Unión Europea, se hace más necesaria que nunca una colaboración internacional e interdisciplinar que demuestre lo erróneo de tales actitudes. Con esta finalidad, el libro recoge las reflexiones de diferentes especialistas de tres países europeos quienes ofrecen sus puntos de vista desde el prismade la educación musical pero también, desde los ámbitos de la neurociencia, la psicología, la logopedia y la política. La presente publicación aúna resultados de trabajos empíricos con propuestas de tipo práctico, lo que la hace útil tanto para investigadores, como para docentes, profesores de música y logopedas. N2 - At a time when music education is being questioned by education policy-makers in certain European Union countries, international and interdisciplinary collaboration is needed more than ever to demonstrate the error of such attitudes. To this end, the book gathers the reflections of different specialists from three European countries who offer their points of view from a musical education prism but also from the fields of neuroscience, psychology, speech therapy and politics. This publication combines the results of empirical work with practical proposals, which makes it useful for researchers, music teachers and speech therapists. N2 - In einer Zeit in der die Musikpädagogik von den für die Erziehungsrichtlinien Verantwortlichen in bestimmten Ländern der Europäischen Union in Frage gestellt wird, ist eine interdisziplinäre und internationale Zusammenarbeit, die belegt, dass eine solche Einstellung falsch ist, notwendiger denn je. Zu diesem Zweck sind in diesem Buch die Überlegungen verschiedener Experten aus drei europäischen Ländern zusammengefasst, die ihre Sichtweise aus der Perspektive der Musikpädagogik, aber auch der Neurologie, der Psychologie, der Logopädie und der Politik anbieten. Die vorliegende Veröffentlichung vereint Ergebnisse empirischer Arbeit mit praktischen Vorschlägen, was sie sowohl für Forschung als auch für Musiklehrer und Logopäden nützlich macht. T3 - Potsdamer Schriftenreihe zur Musikpädagogik - 7 KW - education musicale KW - neurosciences et musique KW - communautés d'apprentissage KW - activités musicales KW - déclaration de Marseille KW - educación musical KW - neurociencia y música KW - comunidades de aprendizaje KW - actividades musicales KW - declaración de Marsella KW - musical Education KW - neuroscience and music KW - learning communities KW - musical activities KW - Marseille declaration KW - Musikpädagogik KW - Neurowissenschaft und Musik KW - Lerngemeinschaften KW - musikalische Aktivitäten KW - Deklaration von Marseille Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-428627 SN - 978-3-86956-466-1 SN - 1861-8529 SN - 2196-5080 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - JOUR A1 - Bernardi, Rafael L. A1 - Berdja, Amokrane A1 - Dani Guzman, Christian A1 - Torres-Torriti, Miguel A1 - Roth, Martin M. T1 - Restoration of images with a spatially varying PSF of the T80-S telescope optical model using neural networks JF - Monthly notices of the Royal Astronomical Society N2 - Most image restoration methods in astronomy rely upon probabilistic tools that infer the best solution for a deconvolution problem. They achieve good performances when the point spread function (PSF) is spatially invariant in the image plane. However, this condition is not always satisfied in real optical systems. We propose a new method for the restoration of images affected by static and anisotropic aberrations using Deep Neural Networks that can be directly applied to sky images. The network is trained using simulated sky images corresponding to the T80-S Telescope optical model, a 80-cm survey imager at Cerro Tololo (Chile), which are synthesized using a Zernike polynomial representation of the optical system. Once trained, the network can be used directly on sky images, outputting a corrected version of the image that has a constant and known PSF across its field of view. The method is to be tested on the T80-S Telescope. We present the method and results on synthetic data. KW - methods: statistical KW - techniques: image processing Y1 - 2021 U6 - https://doi.org/10.1093/mnras/stab3400 SN - 0035-8711 SN - 1365-2966 VL - 510 IS - 3 SP - 4284 EP - 4294 PB - Oxford Univ. Press CY - Oxford ER -