9300 research outputs found
Sort by
La selección del profesorado universitario contratado como mecanismo de mejora en la docencia
No full textLas universidades con mayor calidad en la enseñanza deben tener los mejores
profesores y en ese contexto desarrollamos este trabajo, partiendo de la premisa de la
concepción doble del perfil del profesorado universitario como docente y como
investigador.
¿Garantiza el actual sistema de selección del profesorado universitario la incorporación
de los mejores docentes? ¿Qué peso debe darse al perfil docente e investigador en esta
selección? Poniendo un ejemplo cotidiano, ¿qué ocurriría si en un equipo de fútbol
seleccionamos al mejor delantero centro para colocarle de portero?; ¿y si en la
Universidad seleccionamos al mejor investigador para realizar tareas docentes
Deep learning and fuzzy logic to implement a hybrid wind turbine pitch control
Get PDFThis work focuses on the control of the pitch angle of wind turbines. This is not an easy task due to the nonlinearity, the complex dynamics, and the coupling between the variables of these renewable energy systems. This control is even harder for floating offshore wind turbines, as they are subjected to extreme weather conditions and the disturbances of the waves. To solve it, we propose a hybrid system that combines fuzzy logic and deep learning. Deep learning techniques are used to estimate the current wind and to forecast the future wind. Estimation and forecasting are combined to obtain the effective wind which feeds the fuzzy controller. Simulation results show how including the effective wind improves the performance of the intelligent controller for different disturbances. For low and medium wind speeds, an improvement of 21% is obtained respect to the PID controller, and 7% respect to the standard fuzzy controller. In addition, an intensive analysis has been carried out on the influence of the deep learning configuration parameters in the training of the hybrid control system. It is shown how increasing the number of hidden units improves the training. However, increasing the number of cells while keeping the total number of hidden units decelerates the training.Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. This work was partially supported by the Spanish Ministry of Science, Innovation and Universities under MCI/AEI/FEDER Project Number RTI2018-094902-B-C21.Publicación en abierto financiada por el Consorcio de Bibliotecas Universitarias de Castilla y León (BUCLE), con cargo al Programa Operativo 2014ES16RFOP009 FEDER 2014-2020 DE CASTILLA Y LEÓN, Actuación:20007-CL - Apoyo Consorcio BUCL
Dobles grados ofertados por la Universidad de Burgos a 1/1/2022
No full textDatos institucionales en abierto sobre las titulaciones de Doble Grado ofertadas por la Universidad de Burgos. Datos actualizados a 1 de enero de 2022. Codificaciones de acuerdo con el Sistema Integrado de Información Universitaria (SIIU)
Gender attributions and the construction of identities in children's literature on prehistory
Get PDFEl presente estudio tiene como objetivo analizar las atribuciones de género y los mecanismos de construcción identitaria de las narrativas literarias infantiles sobre prehistoria. Con este objetivo, aplica la técnica de análisis de contenido para describir e interpretar el sentido de los textos y de las ilustraciones desde los parámetros narrativos espacio–acción. Los resultados obtenidos informan de la permanencia de atribuciones y expresiones simbólicas del género desde enfoques androcéntricos, que distorsionan la transposición didáctica de los últimos avances científicos.This study aims to analyze the gender attributions and identity-building mechanisms of children's literary narratives about prehistory. To this end, it applies the technique of content analysis to describe and interpret the meaning of texts and illustrations from the space-action narrative parameters. The results obtained report the permanence of symbolic attributions and expressions of the genre from androcentric approaches, which limit the didactic transposition of the latest scientific advances.Esta investigación forma parte de la Tesis Doctoral La prehistoria cuenta: incidencia de una metodología aplicada para la didáctica de la prehistoria (Universidad de Burgos, 2019), dirigida por el Dr. Delfín Ortega-Sánchez y el Dr. Juan Alfredo Jiménez Eguizábal, y realizada al amparo del Grupo de Investigación DHISO-UBu
A ferrovia como elemento de comunicação e articulação territorial: uma análise a partir de campanhas publicitárias
Get PDFLa publicidad juega un papel muy importante en el entendimiento del territorio, particularmente dentro de una sociedad moderna y constantemente sometida a la incentivación del consumo de un determinado producto. Este hecho, que se refleja en los medios de comunicación, tiene igualmente un gran peso cultural, al punto de contribuir a crear construcciones de imaginarios colectivos asociados al uso o adquisición de estos productos. En el caso de análisis, esta construcción tiene que ver con el uso del ferrocarril, el mensaje que transmite y la percepción del territorio como soporte físico y componente intrínseco de este sistema de transporte. En la relación establecida entre el ferrocarril y el territorio a través de la publicidad, la comunicación ha ido evolucionando en forma y fondo siguiendo un desarrollo paralelo a las mejoras y cambios introducidos dentro de la estructura ferroviaria en España, especialmente tras el surgimiento de la alta velocidad. En este artículo se presenta un análisis diacrónico vinculado a campañas publicitarias de la compañía ferroviaria Renfe (Red Nacional de Ferrocarriles Españoles), tomando como referencia la presencia de elementos vinculados al territorio y a la sociedad en las piezas seleccionadas, lo que permite ver los cambios acaecidos dentro de esta temática.Advertising plays a key role in how we understand territory, especially in a modern society that is constantly incentivized to consume certain products. This is not only reflected in communications media but also throughout our culture, since advertising contributes to the construction of collective imaginaries around the use or acquisition of products. In this paper, we will be analyzing how this construction has developed in the case of rail transport — and what message is being communicated through it. We will also look at how territory is perceived as both a physical component and inherent feature of this mode of transportation. Regarding the relationship between rail transport and territory, advertising communications have evolved in both form and content as improvements and changes were applied to rail infrastructure in Spain, especially following the inauguration of a high-speed rail service. This article offers a diachronic analysis, reviewing advertising campaigns launched by Renfe (the Spanish National Railway Network) and, in particular, looking at references to the territory and society as a whole, tracking how the treatment of these topics has changed.A publicidade desempenha um papel muito importante na compreensão do território, sobretudo numa sociedade moderna que está constantemente sujeita ao incentivo e ao consumo de um determinado produto. Esse fato, que se reflete na mídia, também tem grande peso cultural, a ponto de contribuir para a criação de imaginários coletivos associados ao uso ou aquisição desses produtos.
No caso que vamos analisar, esta construção tem a ver com a utilização do caminho-de-ferro, a mensagem que se transmite e a percepção do território como suporte físico e componente intrínseco deste sistema de transportes. Na relação que se estabelece entre o caminho-de-ferro e o território através da publicidade, esta comunicação tem vindo a evoluir em forma e substância seguindo uma evolução paralela às melhorias e alterações introduzidas na estrutura ferroviária em Espanha, sobretudo após o surgimento da alta velocidade. Este artigo apresenta uma análise diacrónica ligada às campanhas publicitárias da empresa ferroviária Renfe (Rede Nacional dos Caminhos de Ferro Espanhóis), tomando como referência a presença de elementos ligados ao território e à sociedade nas peças selecionadas, o que nos permite ver as mudanças que ocorreram dentro deste tema
Procedure to explore a ternary mixture diagram to find the appropriate gradient profile in liquid chromatography with fluorescence detector. Application to determine four primary aromatic amines in napkins
Get PDFThe purpose of this work is to develop a tool to search for a gradient profile with ternary or binary
mixtures in liquid chromatography, that can provide well-resolved chromatograms in the shortest time
for multianalyte analysis. This approach is based exclusively on experimental data and does not require
a retention time model of the compounds to be separated. The methodology has been applied for the
quantification of four primary aromatic amines (PAAs) using HPLC with fluorescence detector (FLD). Aniline (ANL), 2,4-diaminotoluene (TDA), 4,4
-methylenedianiline (MDA) and 2-aminobiphenyl (ABP) have
been selected since their importance in food contact materials (FCM).
In order to achieve that, partial least squares (PLS) models have been fitted to relate CMP (control
method parameters) and CQA (critical quality attributes). Specifically, PLS models have been fitted using
30 experiments for each one of the four CQA (resolution between peaks and total elution time), considering 33 predictor variables (the composition of the methanol and acetonitrile in the mobile phase and the
time of each one of the 11 isocratic segments of the gradient). These models have been used to predict
new candidate gradients, and then, some of those predictions (the ones with resolutions above 1.5, in absolute value, and final time lower than 20 min) have been experimentally validated. Detection capability
of the method has been evaluated obtaining 1.8, 189.4, 28.8 and 3.0 μg L−1 for ANL, TDA, MDA and ABP,
respectively.
Finally, the application of chemometric tools like PARAFAC2 allowed the accurate quantification of
ANL, TDA, MDA and ABP in paper napkins in the presence of other interfering substances coextracted
in the sample preparation process. ANL has been detected in the three napkins analysed in quantities
between 33.5 and 619.3 μg L−1, while TDA is present in only two napkins in quantities between 725.9
and 1908 μg L−1. In every case, the amount of PAAs found, exceeded the migration limits established in
European regulations.The authors thank the Consejería de Educación de la Junta de Castilla y León for financial support through project BU052P20, cofinanced with FEDER funds. M.M. Arce wish to thank JCyL for her postdoctoral contract through project BU052P20
Evaluation of biostimulation, bioaugmentation, and organic amendments application on the bioremediation of recalcitrant hydrocarbons of soil
Get PDFIn the present work, the operational conditions for improving the degradation rates of Total Petroleum Hydrocarbons (TPHs) in contaminated soil from a machinery park were optimized at a microcosms scale along a 90-
days incubation period. In this study, bioremediation strategies and an organic amendment have been tested to
verify the remediation of soil contaminated with different hydrocarbons, mineral oils, and heavy metals. Specifically, designed biostimulation and bioaugmentation strategies were compared with and without adding
vermicompost. The polluted soil harboring multiple contaminants, partially attenuated for years, was used. The
initial profile showed enrichment in heavy linear alkanes, suggesting a previous moderate weathering. The
application of vermicompost increased five and two times the amounts of available phosphorus (P) and
exchangeable potassium (K), respectively, as a direct consequence of the organic amendment addition. The
microbial activity increased due to soil acidification, which influenced the solubility of P and other micronutrients. It also impacted the predominance and variability of the different microbial groups and the incubation,
as reflected by phospholipid fatty acid (PLFA) results. An increase in the alkaline phosphatases and proteases
linked to bacterial growth was displayed. This stimulation of microbial metabolism correlated with the degradation rates since TPHs degradation’ efficiency after vermicompost addition reached 32.5% and 34.4% of the
initial hydrocarbon levels for biostimulation and bioaugmentation, respectively. Although Polycyclic Aromatic Hydrocarbons (PAHs) were less abundant in this soil, results also decreased, especially for the most abundant, the
phenanthrene. Despite improving the degradation rates, results revealed that recalcitrant and hydrophobic petroleum compounds remained unchanged, indicating that mobility, linked to bioavailability, probably represents
the limiting step for further soil recovery.This work is funded by the GREENER project of the European Union’s Horizon 2020 research and innovation program (Grant Agreement No. 826312). S. Curiel pre-doctoral contract was funded by Junta de Castilla y Leon ´ (ORDEN EDU/1508/2020, de 15 de diciembre)
Actualidad del derecho romano y su valor en la formación del jurista moderno
Get PDFConferencia presentada en el VIII Congreso sobre Principios Generales y Derecho
Romano organizado por la Facultad de Derecho de
UFLO Universidad y el Instituto de Estudios de Derecho Romano,
Lenguas Clásicas y Cultura Latina “Dr. Ángel Enrique Lapieza Elli”,
en el mes de octubre del año 2021
The effect of halogenation of salicylaldehyde on the antiproliferative activities of {Δ/Λ-[Ru(bpy)2(X,Y-sal)]BF4} complexes†
Get PDFRu(II) polypyridyl complexes are widely used in biological fields, due to their physico-chemical and photophysical properties. In this paper, a series of new chiral Ru(II) polypyridyl complexes (1–5) with the general formula {Δ/Λ-[Ru(bpy)2(X,Y-sal)]BF4} (bpy = 2,2′-bipyridyl; X,Y-sal = 5-bromosalicylaldehyde (1), 3,5-dibromosalicylaldehyde (2), 5-chlorosalicylaldehyde (3), 3,5-dichlorosalicylaldehyde (4) and 3-bromo-5-chlorosalicylaldehy (5)) were synthesized and characterized by elemental analysis, FT-IR, and 1H/13C NMR spectroscopy. Also, the structures of complexes 1 and 5 were determined by X-ray crystallography; these results showed that the central Ru atom adopts a distorted octahedral coordination sphere with two bpy and one halogen-substituted salicylaldehyde. DFT and TD-DFT calculations have been performed to explain the excited states of these complexes. The singlet states with higher oscillator strength are correlated with the absorption signals and are mainly described as 1MLCT from the ruthenium centre to the bpy ligands. The lowest triplet states (T1) are described as 3MLCT from the ruthenium center to the salicylaldehyde ligand. The theoretical results are in good agreement with the observed unstructured band at around 520 nm for complexes 2, 4 and 5. Biological studies on human cancer cells revealed that dihalogenated ligands endow the Ru(II) complexes with enhanced cytotoxicity compared to monohalogenated ligands. In addition, as far as the type of halogen is concerned, bromine is the halogen that provides the highest cytotoxicity to the synthesized complexes. All complexes induce cell cycle arrest in G0/G1 and apoptosis, but only complexes bearing Br are able to provoke an increase in intracellular ROS levels and mitochondrial dysfunction.Research Council of the University of Isfahan (Iran) for financial support of this work. Financial support from La Caixa Foundation (LCF/PR/PR12/11070003), Ministerio de Ciencia, Innovación y Universidades (Grant PID2019-111215RB-I00 and RTI2018-102040-B-100) and Consejería de Educación, Junta de Castilla y León, FEDER (BU305P18) is gratefully acknowledged
Tesis Prueba 27/06
No full textTesis doctoral en período de exposición públicaPrograma de doctorado de prueb