2,650 research outputs found

    Cambios en la representación polínica de los ecosistemas fluvio-marinos de transición del entorno de la Ría de Vigo durante los últimos 1500 años

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    XV lnternational A.P.L.E. Symposium of Palynolog

    Experiences in teaching Hydrogen Technologies in the framework of the International Campus of Excellence Andalucia TECH

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    The increasing importance of hydrogen technologies is demanding prepared professionals in the numerous topics related to this energy vector. Apart from some basic and advanced courses given by actual experts in these topics, universities must play an important role in the general formation of future professionals. In this way, the International Campus of Excellence (ICE) Andalucía TECH has created several degrees taught jointly by its participating universities of Seville (US) and Málaga (UMA). Among those degrees, Energy Engineering is the best suited to the field of this conference because this degree provide future engineers with specialized training in energy generation, transformation and management. In relation to hydrogen technologies this degree includes a cross sectional optional unit named Hydrogen Based Systems (4.5 ECTS/112.5 h), which is placed in the last term of the fourth year and sharing space with work placement and mobility courses. This paper will present some author’s experiences as teachers of that unit during its short history of only three years. In spite of being a joint degree, which is coordinated between both universities (US and UMA) trying to give similar contents, it is interesting to highlight the differential experiences coming from the teachers of both universities in relation to the teaching methodologies and academic results.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

    Pautas de intervención en el uso de estrategias sintácticas en sujetos con agramatismo

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    [Resumen] El agramatismo es un trastorno de producción lingüística que afecta, principalmente, al correcto funcionamiento del procesador sintáctico. Este trastorno es típico de los afásicos de Broca aunque su etiología es tan variada como lo son las causas de la lesión que lo provocan, desde traumatismo craneoencefálico hasta enfermedades neurodegenerativas. En este contexto el objetivo de este trabajo es diseñar una terapia logopédica que nos permita la intervención en procesamiento sintáctico: concordancia y uso de palabras función, y combinadas de diferentes maneras según el objetivo específico que pretendemos conseguir con cada actividad. A l mismo tiempo trabajaremos la amplitud de memoria de trabajo como habilidad cognitiva básica que mediatiza dicho aprendizaje.[Abstract] The agrammatism is a language production disorder which mainly affects the proper functioning of syntactic processor. This condition is typical of Broca’s aphasia but its etiology is as varied as are the causes that cause injury from head trauma to neurodegenerative diseases. In this context, the aim of this work is to design a speech therapy intervention that allows us in syntactic processing: grammatical functions, concordance and use of function words, and combined in different ways depending on the specific objective we want to achieve with each activity. A t the same time work the working memory span as basic cognitive ability that mediates this learning

    How Is Functional Food Advertising Understood? An Approximation in University Students

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    In functional food advertising, messages are not always easily understandable for the target audience. Current European legislation, enforced through Regulation 1924/2006, specifies that such messages should be clear and precise so as not to mislead the consumer. The objective of this study was to observe consumers’ understanding of messages in functional food advertisements. The methodology used was a self-administered survey filled out by 191 students enrolled in a Degree in Advertising and Public Relations at the University of Alicante (Spain). The results suggest that a large number of students do not know what functional food is and obtain information about these products mainly from labelling/packaging. The major means of communication through which they learn about health benefits via advertising is the internet, followed by television. Most respondents indicated that they understood related advertisements and found it helpful to be given additional information on health benefits. Worthy of note, the greater their level of understanding of the messages, the higher their level of distrust of advertising messages, which they considered to be deceptive or misleading.This research was conducted under the R&D&i project “Reclamos de salud en la publicidad de alimentos y comprensión del consumidor” (“Health claims in food advertising and consumer understanding”-GV/2016/088), funded by the Generalitat Valenciana, Spain and directed by Cristina González Díaz

    S wave velocity structure below central Mexico using high-resolution surface wave tomography

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    Shear wave velocity of the crust below central Mexico is estimated using surface wave dispersion measurements from regional earthquakes recorded on a dense, 500 km long linear seismic network. Vertical components of regional records from 90 well-located earthquakes were used to compute Rayleigh-wave group-velocity dispersion curves. A tomographic inversion, with high resolution in a zone close to the array, obtained for periods between 5 and 50 s reveals significant differences relative to a reference model, especially at larger periods (>30 s). A 2-D S wave velocity model is obtained from the inversion of local dispersion curves that were reconstructed from the tomographic solutions. The results show large differences, especially in the lower crust, among back-arc, volcanic arc, and fore-arc regions; they also show a well-resolved low-velocity zone just below the active part of the Trans Mexican Volcanic Belt (TMVB) suggesting the presence of a mantle wedge. Low densities in the back arc, inferred from the low shear wave velocities, can provide isostatic support for the TMVB

    Synthesis and catalytic activity of well-defined Co(i) complexes based on NHC–phosphane pincer ligands

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    A new methodology for the preparation of Co(I)–NHC (NHC = N-heterocyclic carbene) complexes, namely, [Co(PCNHCP)(CO)2][Co(CO)4] (1) and [Co(PCNHCP)(CO)2]BF4 (2), has been developed (PCNHCP = 1,3-bis(2-(diphenylphosphanyl)ethyl)-imidazol-2-ylidene). Both complexes can be straightforwardly prepared by direct reaction of their parent imidazolium salts with the Co(0) complex Co2(CO)8. Complex 1 efficiently catalyses the reductive amination of furfural and levulinic acid employing silanes as reducing agents under mild conditions. Furfural has been converted into a variety of secondary and tertiary amines employing dimethyl carbonate as the solvent, while levulinic acid has been converted into pyrrolidines under solventless conditions. Dehydrocoupling of the silane to give polysilanes has been observed to occur as a side reaction of the hydrosilylation process

    A Study on the Impacts of Slot Types and Training Data on Joint Natural Language Understanding in a Spanish Medication Management Assistant Scenario

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    This study evaluates the impacts of slot tagging and training data length on joint natural language understanding (NLU) models for medication management scenarios using chatbots in Spanish. In this study, we define the intents (purposes of the sentences) for medication management scenarios and two types of slot tags. For training the model, we generated four datasets, combining long/short sentences with long/short slots, while for testing, we collect the data from real interactions of users with a chatbot. For the comparative analysis, we chose six joint NLU models (SlotRefine, stack-propagation framework, SF-ID network, capsule-NLU, slot-gated modeling, and a joint SLU-LM model) from the literature. The results show that the best performance (with a sentence-level semantic accuracy of 68.6%, an F1-score of 76.4% for slot filling, and an accuracy of 79.3% for intent detection) is achieved using short sentences and short slots. Our results suggest that joint NLU models trained with short slots yield better results than those trained with long slots for the slot filling task. The results also indicate that short slots could be a better choice for the dialog system because of their simplicity. Importantly, the work demonstrates that the performance of the joint NLU models can be improved by selecting the correct slot configuration according to the usage scenario. © 2022 by the authors. Licensee MDPI, Basel, Switzerland

    Influencia del ángulo de la proyección de abrasivos en la limpieza de materiales pétreos detríticos en Patrimonio Arquitectónico

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    In this research, the influence of the angle in abrasive blasting cleaning is studied on Montjuïc sandstone with black crust. After analyzing the properties of the soiling and the material, and their possible influence on the treatment, different cleaning tests were made at four different angles, keeping the complementary parameters constant. Taking the restorer’s perspective as a starting point, and in order to fulfill the practical requirements of an intervention —time and cost reduction—, tests were evaluated with USB digital microscope, stereomicroscope with 3D visualization and measurement, and colorimeter. From the results it is established that angles close to 75° minimize surface alteration, reducing differential erosion in the binding phases of detritic materials usually caused by this treatment.En este trabajo se estudia la influencia del ángulo de la proyección de abrasivos en la limpieza de una arenisca de Montjuïc con costra negra. Tras analizar las propiedades del material, de la suciedad y su posible influencia en el tratamiento, se realizan diferentes catas de limpieza con cuatro ángulos distintos manteniendo constantes el resto de parámetros de la proyección. Partiendo de la visión del conservador-restaurador y de un carácter práctico según las necesidades reales de una intervención —reducción de tiempos y costes—, los ensayos se evalúan con microscopio digital USB, microscopio estereoscópico con visualización y medición en 3D y colorímetro. De los resultados se puede determinar que ángulos cercanos a 75° minimizan la alteración de la superficie al reducir la erosión diferencial de las fases de unión que el tratamiento normalmente provoca en los materiales detríticos
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