100333 research outputs found
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Accesibilidad como materia transversal en los Grados y Másteres en Turismo y Comercio: un análisis prospectivo
No full textUniversidad Complutense de MadridDepto. de GeografíaFac. de Comercio y TurismoFALSEsubmitte
¿Puede la colaboración ciudadana mejorar las colecciones patrimoniales digitales de las bibliotecas universitarias? Laboratorios bibliotecarios y un caso de estudio : proyecto para la identificación y geolocalización de una colección de la Biblioteca Complutense a través de la participación ciudadana
No full textRESUMEN: Las bibliotecas universitarias están empezando a afianzar su papel como proveedoras de datos, instaurando los metadatos como servicio. Los datos de las colecciones patrimoniales digitalizadas son una fuente de información muy valiosa para la investigación, especialmente en Humanidades Digitales. En este contexto, las bibliotecas deben plantearse, por un lado, cómo compartir los datos, dónde publicarlos y con qué licencias, y por otro lado, cómo favorecer su enriquecimiento para que sean realmente útiles y reutilizables para la investigación. Los laboratorios bibliotecarios, una innovadora propuesta para la participación ciudadana introducida en España en los últimos años, pueden constituir una herramienta de gran valor para el desarrollo de proyectos con datos y colecciones, con el objetivo de mejorar y enriquecer esos datos para que sean más relevantes. La participación ciudadana puede ser el medio para lograr un fin: conseguir «datasets» reutilizables y de calidad que ofrecer para la investigación.ABSTRACT: University libraries begin to consolidate their role as data providers, establishing metadata as a service. Data from digitized heritage collections are a very useful source of information for research, especially in Digital Humanities. In this context, libraries must consider, on the one hand, how to share the data, where to publish them and under which licenses, and on the other hand, how to promote their enrichment so that they become really useful and reusable for research. Library labs, an innovative proposal for citizen participation introduced in Spain in recent years, can be a powerful tool for the development of projects with data and collections, with the aim of improving and enriching these data to make them more relevant. Citizen participation can be the way to achieve an aim: to obtain reusable and quality datasets to offer for research.BibliotecaFac. de FilologíaUCM. BibliotecaTRUEunpu
Palabras y aprendizaje: propuesta de una estrategia conceptual en la docencia universitaria
No full textSe resume aquí el trabajo realizado a propósito de un proyecto de innovación docente orientado al aprendizaje conceptual, esto es, a dar una importancia central a los conceptos científicos y a las categorías intelectuales en el proceso de aprendizaje de las ciencias sociales en el ámbito universitario, priorizando el uso de glosarios en el curso del aprendizaje y de la evaluación. Se trata de dar solución a lo que observamos como una debilidad frecuente en el ámbito de enseñanza de la sociología como es la dificultad del alumnado para definir categorías y nociones de la disciplina de manera relativamente solvente, en cierta medida como efecto no deseado de la pluralidad paradigmática de esta disciplina.Depto. de Sociología AplicadaFac. de Ciencias de la InformaciónFALSEsubmitte
Complex modulation Diffractive Optical Elements implemented in a single Spatial Light Modulator
No full textSpatial light modulators (SLMs) are optoelectronic devices that spatially modulate the properties of an incident electromagnetic field, such as its amplitude, phase, or polarization. They are used to generate dynamic Diffractive Optical Elements (DOEs), which are normally configured as pure-amplitude or pure-phase DOEs. In this work, we propose to generate complex modulation with a single SLM for optimizing the performance of DOEs. For that, we fill, as evenly as possible, the Argand plane, representing the complex amplitude of the DOE, with the modulation curve provided by the SLM and the polarization plates used. Also, we modify the Iterative Fourier Transform Algorithm to design complex DOEs and implement them in the SLM that works in an amplitude-phase configuration. For the simulations, we have considered that the modulation curves are spiral-shaped. We have verified that their far-field diffraction patterns present more uniformity, less background noise, and higher diffraction efficiencies than when pure-phase configuration is used. For the experimental verification, we have calibrated a LCoS SLM and optimized the azimuths of the polarizers and quarter-wave plates, placed before and after the SLM, to obtain the optimal modulation curve. The diffraction pattern generated by the studied complex DOEs presents a 32% increase in diffraction efficiency and a reduction of 85% in background noise compared to the phase DOE.Ministerio de Ciencia e Innovación (España)Universidad Complutense de MadridDepto. de Optometría y VisiónFac. de Óptica y OptometríaTRUEpu
Eco-anxiety or simply eco-worry? Incremental validity study in a representative Spanish sample
No full textThe author(s) declare that financial support was received for the research and/or publication of this article. The sample was recruited thanks to a grant from the Foundation La Caixa under the project titled Benefits of Practical Eco-Anxiety: Psychological Predictors of Pro-Environmental Behavior, reference number FS23-2B192.Scientific literature is keen to promote the study of eco-anxiety despite its current low prevalence and inconsistent relationships with pro-environmental behavior and mental health. In this paper, we analyze in a representative sample of the Spanish population (N = 1911) the incremental validity of the eco-worry construct concerning that of eco-anxiety at three levels of environmental commitment: high (environmental activists), medium (people who are not part of any environmental organization but who would like to), and low (people who neither belong to environmental groups nor want to). Our results showed that (1) the environmental activists in our sample did not seem to be eco-anxious but rather eco-worried, and (2) at the three levels of environmental commitment, eco-worry but not eco-anxiety positively mediated the relationship between climate change perception and general willingness for environmental behavior, and eco-worry, but not eco-anxiety, positively connected with life satisfaction through the general willingness to behave pro-environmentally. It is concluded that eco-anxiety does not add anything to the more intuitive and non-pathological concept of eco-worry, except for the alarm signal, which is not at all strategic when the goal is to promote individual pro-environmental behaviors and collective social actions.Fundación La CaixaDepto. de Psicología Social, del Trabajo y DiferencialFac. de PsicologíaTRUEpu
Influence of local factors on the expression of the early Aptian OAE 1a – insights from a pelagic basin in the Western Tethys
No full textThe early Aptian Oceanic Anoxic Event (OAE 1a) was characterized by a major perturbation in the global carbon cycle, linked to the rapid input of 13C-depleted carbon into the Earth's system from volcanogenic and/or methanogenic sources. Although the related environmental and climatic changes are relatively well understood on a global scale, local and regional impacts are less well constrained. Here we provide new insights into the local expression of the biotic and environmental changes related to OAE 1a in pelagic domains, by analysing a pelagic succession from the Western Tethys, La Frontera section (S. Spain), using biomarkers, TOC content, and elemental composition data. These data revealed a complex variability before, during, and after OAE 1a (defined as isotope segments C2 to C7), but with a clear episode of biotic and environmental perturbation within OAE 1a at the upper C4 segment. Comparison with the nearby pelagic Carbonero section within the same basin reveals a heterogeneous expression of this event, recording three episodes of accelerated environmental change (including C4 segment) that correlate with C-isotope shifts. These episodes also correlate with cooling and warming periods based on sea-surface temperature data and can be linked to variable Ontong-Java Plateau activity, as indicated by osmium isotopes. Local palaeogeographic conditions likely controlled the heterogeneous expression of OAE 1a, with the Carbonero section situated in a more subsident and more restricted water circulation area. Our results highlight the importance of understanding the local and regional context when evaluating the global expression of OAE 1a in pelagic domains.Junta de AndalucíaMinisterio de Ciencia e InnovaciónDepto. de Geodinámica, Estratigrafía y PaleontologíaFac. de Ciencias GeológicasTRUEpu
Geophysical characterization and 3D modeling of an active landslide in Arteixo (La Coruña) using Electrical Resistivity Tomography (ERT)
No full textLos movimientos de ladera constituyen uno de los procesos geodinámicos más relevantes en términos de riesgo geotécnico, debido a su capacidad para generar daños estructurales y pérdidas humanas. Comprender la geometría interna de una masa inestable es fundamental para evaluar su evolución, delimitar el plano de rotura y diseñar estrategias eficaces de mitigación y monitoreo. Este estudio presenta la caracterización geofísica y el modelado tridimensional de un deslizamiento activo localizado en el municipio de Arteixo (La Coruña), mediante la aplicación del método de Tomografía de Resistividad Eléctrica (ERT). Se realizaron ocho perfiles de tomografía con diferentes configuraciones de electrodos, cuyos resultados fueron procesados con técnicas de inversión y posteriormente integrados en un modelo 3D utilizando el software Move. El análisis permitió diferenciar tres unidades geoeléctricas principales en función de sus valores de resistividad, lo que facilitó la interpretación indirecta de la estructura interna de la ladera, así como la identificación de planos de rotura, zonas de alteración y discontinuidades estructurales. Los contrastes resistivos observados mostraron coherencia con los factores condicionantes del deslizamiento, como la presencia de fracturas y la meteorización diferencial. El modelo 3D final permitió delimitar el volumen movilizado y proporcionó una herramienta de análisis útil para la gestión del riesgo geotécnico en laderas graníticas fracturadas.Depto. de Geodinámica, Estratigrafía y PaleontologíaFac. de Ciencias GeológicasTRUEsubmitte
Multicollinearity mitigation and unbiased estimations: an application of restricted least squares
No full textThis work presents an application of Restricted Least Squares (RLS) that achieves the mitigation of severe multicollinearity problems along with obtaining unbiased estimates. Both targets are restricted to the verification of the null hypothesis of the restrictions on the coefficients of the RLS model, which has been obtained with the application of two recent methodologies that mitigate multicollinearity problems: residualization and raise regression. The reliability of the proposed methodology is shown through Monte Carlo simulations, which illustrate that it is independent of the degree and type of multicollinearity. Finally, a particular empirical application is implemented, and it displays the possible combination of constraints depending on the case study. In conclusion, this application introduces a technique that can be used in all fields and particular studies where problematic relationships among explanatory variables emerge and the traditional methodologies to overcome the issue are biased techniques.Junta de AndalucíaDepto. de Economía Aplicada, Estructura e HistoriaFac. de Ciencias Económicas y EmpresarialesTRUEpu
Academia Europaea’s guidelines for the visualization of clinical outcomes
No full textA working group of Academia Europaea proposes the addition of a ‘ring diagram’ in clinical publications for the quick evaluation of translational implications.Depto. de Farmacología y ToxicologíaFac. de VeterinariaTRUEpu