Copia sin original: en venganza de su ignorancia (analice: ¿es su ignorancia supina o invencible?)

Texto curatorial para la exposición "Copia sin original" de la artista Coco Moya, en la Biblioteca de la Facultad de Bellas Artes UCM, mayo 2018. La exposición consiste en la obra homónima, que es una fotocopiadora de libros invisibles, en concreto del libro invisible de la SSCDD, la Sociedad Secreta de la Ciudad de las Damas, un ensayo epistolar en el que se habla de cómo contar la historia borrada o ausente de las mujeres en la Historia del arte. Además, se expone una selección de las tesis de mujeres realizadas en esta facultad durante los últimos 3 años, desde el 2015 al 2018. Un total de 64 tesis que también se pueden descargar en PDF desde la web de la universidad (eprints). El texto, dividido en tres partes, hace un guiño al libro del que surge la sociedad; este es "La ciudad de las Damas" de Christine de Pizan, un primer escrito protofeminista que reivindica el honor y la importancia de las mujeres en la historia del arte y que pone por primera vez en el debate público la cuestión de la imagen histórica misógina que se presenta en los escritos de reputados historiadores

Information literacy skills to use web resources: an analysis of two Biology subjects

Nuestros alumnos tienen a su disposición multitud de fuentes de información que pueden utilizar para cursar las materias de la titulación. Sin embargo, éstos deben poseer las competencias informacionales necesarias para buscar, evaluar y usar la información de forma correcta y eficiente, sobre todo en cuanto al uso de recursos web. A pesar de que los estudiantes dominan el componente tecnológico, cuando se analiza el manejo y la calidad de las fuentes de información que emplean se detectan numerosas carencias. En este trabajo se evalúan las competencias informacionales de los alumnos de dos materias de la licenciatura en Biología de la Universidad de A Coruña, y los resultados confirman que el desarrollo de actividades específicas, a pesar de suponer una inversión de tiempo para el docente, mejoran significativamente estas competencias. Así, en este trabajo presentamos la organización de talleres en grupos de docencia reducida en el nuevo Grado, que pueden permitir la formación en competencias transversales como las informacionales, pero también introducir métodos de trabajo como el sistema de revisión por pares.Students have a large amount of information readily available they can use while enrolled in our courses. However, they must have already acquired the necessary information literacy skills to search, evaluate, and use information in a proper and efficient way, mainly concerning Web resources. Despite the fact that students show high technological abilities, the analysis of the way they gather information and the quality of their sources shows that there are still important shortcomings. The present study evaluates the information literacy skills of students enrolled in two Biology subjects at the University of A Coruña. Results confirm that the development of specific activities, even if they might be timecosting for teachers, certainly improve students’ skills. Thus, we present the organization of seminars for small groups of students in the new Grade in Biology that can serve to improve their information literacy skills, as well as to introduce students the process of peer-review

The new Wolf-Rayet binary system WR62a

Context. A significant number of the Wolf-Rayet stars seem to be binary or multiple systems, but the nature of many of them is still unknown. Dedicated monitoring of WR stars favours the discovery of new systems. Aims. We explore the possibility that WR62a is a binary system. Methods. We analysed the spectra of WR62a, obtained between 2002 and 2010, to look for radial-velocity and spectral variations that would suggest there is a binary component. We searched for periodicities in the measured radial velocities and determined orbital solutions. A period search was also performed on the "All-Sky Automated Survey" photometry. Results. We find that WR62a is a double-lined spectroscopic binary with a WN5 primary star and an O 5.5-6 type secondary component in orbit with a period of 9.1447 d. The minimum masses range between 21 and 23 Mo for the WN star and between 39 and 42 Mo for the O-type star, thus indicating that the WN star is less massive than the O-type component. We detect a phase shift in the radial-velocity curve of the He II 4686 emission line relative to the other emission line curves. The equivalent width of this emission line shows a minimum value when the WN star passes in front of the system. The analysis of the ASAS photometry confirms the spectroscopic periodicity, presenting a minimum at the same phase.Comment: 7 pages, 8 figures, accepted for publication in A&

On the Kalman-Yakubovich-Popov Lemma for Stabilizable Systems

The Kalman-Yakubovich-Popov (KYP) lemma has been a cornerstone in system theory and network analysis and synthesis. It relates an analytic property of a square transfer matrix in the frequency domain to a set of algebraic equations involving parameters of a minimal realization in time domain. This note proves that the KYP lemma is also valid for realizations which are stabilizable and observabl

The utility and limitations of the New Ecological Paradigm scale for children

The New Ecological Paradigm (NEP) scale adapted for use with children (NEP-C) is one of the most frequently used measures of children’s environmental beliefs. Though widely utilized, the limitations of the NEP-C instrument are often overlooked. Based on a systematic synthesis of existing literature examining the NEP-C, we argue that the scale assesses specific types of beliefs within the larger NEP, that some children have difficulty comprehending items of this scale, and that the one-factor and three-factor models proposed in the original NEP-C did not achieve an exact fit to empirical data. Additionally, the relevance of the NEP-C total score as a predictor of children’s pro-environmental behaviors is questionable. Although the NEP-C is useful for measuring specific types of environmental beliefs, many researchers using this scale may be interested in broader constructs. We highlight potential benefits and drawbacks of using the NEP-C and discuss new directions for environmental education research

¿Tritanopía adquirida en los pescadores del sur de España?: una exploración negativa.

Sin resume

Condrosarcoma en pie

El condrosarcoma óseo en el pie es una lesión muy rara. Se presenta 1 caso de bajo grado de malignidad histológico y primario en su origen, que afecta al primer radio, tratado mediante resección amplia y sin signos de recidiva a los 3 años y medio de evolución.Bone chondrosarcoma very rarely affccts the foot. We report a case of primary bone chondrosarcoma vvith low grade malignancy involving the first metatarsal bone. Tumor was treated by wide resection. Three and half years later, there was not signs of recurrence

Experimental approval of the extended flat bands and gapped subbands in rhombohedral multilayer graphene

Graphene layers are known to stack in two stable configurations, namely ABA or ABC stacking, with drastically distinct electronic properties. Unlike the ABA stacking, little has been done to experimentally investigate the electronic properties of ABC graphene multilayers. Here, we report the first magneto optical study of a large ABC domain in a graphene multilayers flake, with ABC sequences exceeding 17 graphene sheets. The ABC-stacked multilayers can be fingerprinted with a characteristic electronic Raman scattering response, which persists even at room temperatures. Tracing the magnetic field evolution of the inter Landau level excitations from this domain gives strong evidence to the existence of a dispersionless electronic band near the Fermi level, characteristic of such stacking. Our findings present a simple yet powerful approach to probe ABC stacking in graphene multilayer flakes, where this highly degenerated band appears as an appealing candidate to host strongly correlated states.Comment: 8 pages, 4 figure

Pedonais crassifaucis n.gen., n.sp. (Naididae) and Bothrioneurum righii n.sp. (Tubificidae), two new tropical soil-dwelling species of "aquatic" oligochaetes (Clitellata, Annelida) from Central Amazonia

Two new species of so-called aquatic Oligochaeta are described from soil and litter samples originating from terra firme sites of the Amazonian primary rain forest. Bothrioneurum righii n.sp. (Tubificidae) is characterized by posterior dorsal chaetae with very large distal teeth and much reduced proximal teeth. The new genus Pedonais (Naididae) resembles Allonais but differs from it in the absence of hair chaetae, in the similarity of dorsal and ventral chaetae, and in the presence of well-developed pharyngeal glands. Pedonais crassifcaucis n.sp. reproduces asexually by fragmentation and subsequent regeneration, and the same is assumed for B. righii. Sexually mature specimens were not found. Both species exhibit traits that can be conceived as adaptations of aquatic oligochaetes for a successful colonization of terrestrial habitats