315 research outputs found
Potencial educativo del patrimonio histórico bélico en el ámbito de la educación para la convivencia escolar.
El uso del fenómeno de la guerra no sólo como un recurso didáctico para el aprendizaje de la Historia sino también como una herramienta educativa que nos permitirá trabajar ciertos valores primordiales como son, la convivencia, la amistad, la empatía, la compasión... los cuales serán de gran ayuda para afrontar los conflictos que surgen en nuestra realidad educativa, la escuela. De esta manera, la utilización de los recursos que nos ofrece el Patrimonio Histórico Bélico nos permitirá el uso de la interdisciplinariedad y la puesta en marcha de recursos muy variados que enriquecerán los procesos de enseñanza-aprendizaje desde un enfoque metodológico innovador.Grado en Educación Primari
Multispectral Imaging for the Analysis of Materials and Pathologies in Civil Engineering, Constructions and Natural Spaces
Tesis por compendio de publicaciones[EN] Multispectral imaging is a non-destructive technique that combines
imaging and spectroscopy to analyse the spectral behaviour of materials
and land covers through the use of geospatial sensors. These sensors
collect both spatial and spectral information for a given scenario and a
spectral range, so that, their graphical representation elements (pixels or
points) store the spectral properties of the radiation reflected by the
material sample or land cover. The term multispectral imaging is
commonly associated with satellite imaging, but the application range
extends to other scales as close-range photogrammetry through the use of
sensors on board of airborne systems (gliders, trikes, drones, etc.) or
through their use at ground level. Its usefulness has been proved in a
variety of disciplines from topography, geology, atmospheric science to
forestry or agriculture. The present thesis is framed within close-range
remote sensing applied to the civil engineering, cultural heritage and
natural resources fields via multispectral image analysis.
Specifically, the main goal of this research work is to study and analyse
the radiometric behaviour of different natural and artificial covers by
combining several sensors recording data in the visible and infrared
ranges of the spectrum. The research lines have not been limited to the
2D data analysis, but in some cases 3D intensity data have been
integrated with 2D data from active (terrestrial laser scanners) and
passive (multispectral digital cameras) sensors in order to analyse
different materials and possible associated pathologies, getting more
comprehensive products due to the metric that 3D brings to 2D data.
Works began with the radiometric calibration of the active and passive
sensors used by the vicarious calibration method. The calibrations were
carried out through MULRACS, a multispectral radiometric calibration
software developed for this purpose (see Appendix B). After the
calibration process, active and passive sensors were used together for the
discretization of sedimentary rocks and detecting pathologies, as
moisture, in façades and in civil structures. Finally, the Doctoral Thesis concludes with a theoretical book chapter in which all the know-how and expertise arising during this research stage have been compiled.[ES]Las imágenes multiespectrales se constituyen como técnica no
destructiva que combina imagen y espectroscopía para analizar el
comportamiento espectral de distintos materiales y superficies terrestres a
través del uso de sensores geoespaciales. Estos sensores adquieren tanto
información espacial como espectral para un escenario y un rango
espectral dados de tal forma sus unidades de representación gráfica (ya
sean píxeles o puntos) registran las propiedades de la radiación reflejada
para cada material o cobertura a estudiar y longitud de onda. Las
imágenes multiespectrales no solo se limitan a las observaciones
satelitales a las que tradicionalmente se vinculan, sino que tienen un
campo de aplicación más amplio gracias a los estudios de rango cercano
realizados a través del uso de sensores tanto embarcados en sistemas
aéreos (planeadores, paramotores, drones, etc.) como a nivel terreno. Su
utilidad ha sido demostrada en multitud de disciplinas; desde la
topografía, geología, aerología, hasta la ingeniería forestal o la
agricultura entre otros. La presente tesis se enmarca dentro de la
teledetección de rango cercano aplicada a la ingeniería civil, el
patrimonio cultural y los recursos naturales a través del análisis
multiespectral de imágenes.
Concretamente, el principal objetivo de este trabajo de investigación
consiste en el estudio y análisis del comportamiento radiométrico de
distintas coberturas naturales y artificiales mediante el uso combinado de
distintos sensores que registran información espectral en los rangos
visible e infrarrojo del espectro electromagnético. Las líneas de
investigación no se han limitado al análisis de datos bidimensionales
(imágenes) sino que en algunos casos se han integrado datos de
intensidad registrados en 3D a través de sensores activos (láser escáner
terrestres) con datos 2D capturados con sensores pasivos (cámaras
digitales convencionales y multiespectrales) con el objetivo de analizar
diferentes materiales y posibles patologías asociadas a los mismos
ofreciendo resultados más completos gracias a la métrica que los datos
3D aportan a los datos 2D.
Los trabajos comenzaron con la calibración radiométrica de los sensores
por el método de calibración vicario. Las calibraciones fueron resueltas
gracias al uso del software MULRACS, un software para la calibración
radiométrica multiespectral desarrollado durante este periodo para tal fin
(ver Apéndice B). Tras el proceso de calibración, se combinó el uso de
sensores activos y pasivos para la diferenciación de distintos tipos de
rocas sedimentarias y la detección de patologías, como humedades, en
fachadas de edificios históricos y en estructuras de ingeniería civil.
Finalmente, la Tesis Doctoral concluye con un capítulo teórico de libro
en el cual se recopilan todos los conocimientos y experiencias adquiridos durante este periodo de investigación
Evaluación del sistema actual de guianza del vivarium y propuesta de un programa de interpretación para los guías del vivarium
La presente investigación y propuesta de un programa de interpretación para los guías del
Vivarium de Quito, parte de la necesidad de crear conciencia en educación e interpretación
ambiental por parte del público visitante, sin embargo para lograr ésta meta es necesario
conocer definiciones e historia de la interpretación y educación ambiental, mencionar y poner
en práctica principios fundamentales de Freeman Tilden, Sam Ham y otros autores
importantes relacionados en el tema.
Para llevar a cabo el objetivo de la interpretación es indispensable determinar los tipos de
guías existentes y especificar actitudes, obligaciones y responsabilidades del guía para el
Vivarium, teniendo en cuenta que es factor clave y primordial entre la exhibición y la
información; el guía es el generador de la cultura de conservación del patrimonio natural, un
facilitador de información, encargado de llevar el mensaje directamente al visitante de una
manera clara, dinámica y participativa.
Teniendo las cualidades del guía, se determina los grupos metas para el adecuado desarrollo
de temas y mensajes; conociendo formas y estilos de aprendizajes de los visitantes que facilite
la captación del mensaje de conservación sobre anfibios y reptiles.
Finalmente se desarrollan los guiones interpretativos, guiones que deben satisfacer las
necesidades de los visitantes y ofrecer la información necesaria sobre la exhibición y el tema a
tratarse, este paso se conoce con las debidas evaluaciones y encuestas.
Periódicamente se establece evaluaciones para conocer el desarrollo del guía, temas tratados y
el mensaje que consigo trae la conservación
Ener3DMap-SolarWeb roofs: A geospatial web-based platform to compute photovoltaic potential
[EN] The effective exploitation and management of renewable energies requires knowledge not only of the energy intensity at the exploitation site but also of the influence of the geometry of the site and its surroundings. For this reason, the efficient processing and interpretation of combined geospatial and energy data is a key issue. This paper presents the development of a web-based tool for the automatic computation of photovoltaic potential on rooftops and on parcels without buildings. The tool called Ener3DMap-SolarWeb Roofs is based on Leaflet and supports WMS, GeoJSON, GeoCSV and KML formats, among others. With these data formats, base maps, geometric data from the rooftops automatically computed from LiDAR and imagery data with self-developed processing algorithms, cadastral data and a solar radiation model are integrated in the tool. These different types of data, the high level of automation and the different scales for which energy data is calculated (hourly, monthly and annually) are the main contributions of the presented tool compared to other existing solutions. The capacities of the tool are tested through its application to analyze the solar potential of rooftops with different shapes and for different solar panel configurations. The accuracy of the results is ensured through the integration of a validated methodology for the computation of geometry and a validated solar radiation model, PVGIS
Comparing Terrestrial Laser Scanning (TLS) and Wearable Laser Scanning (WLS) for Individual Tree Modeling at Plot Level
54 p.This study presents a comparison between the use of wearable laser scanning (WLS) and terrestrial laser scanning (TLS) devices for automatic tree detection with an estimation of two dendrometric variables: diameter at breast height (DBH) and total tree height (TH). Operative processes for data collection and automatic forest inventory are described in detail. The approach
used is based on the clustering of points belonging to each individual tree, the isolation of the trunks, the iterative fitting of circles for the DBH calculation and the computation of the TH of each tree. TLS and WLS point clouds were compared by the statistical analysis of both estimated forest dendrometric parameters and the possible presence of bias. Results show that the apparent differences in point density and relative precision between both 3D forest models do not affect tree detection and DBH estimation. Nevertheless, tree height estimation using WLS appears to be affected by the limited scanning range of the WLS used in this study. TH estimations for trees below a certain height are equivalent using WLS or TLS, whereas TH of taller trees is clearly underestimated using WLSS
Supercapacitor Electro-Mathematical And Machine Learning Modelling For Low Power Applications
Low power electronic systems, whenever feasible, use supercapacitors to store energy instead of batteries due to their fast charging capability, low maintenance and low environmental footprint. To decide if supercapacitors are feasible requires characterising their behaviour and performance for the load profiles and conditions of the target. Traditional supercapacitor models are electromechanical, require complex equations and knowledge of the physics and chemical processes involved. Models based on equivalent circuits and mathematical equations are less complex and could provide enough accuracy. The present work uses the latter techniques to characterize supercapacitors. The data required to parametrize the mathematical model is obtained through tests that provide the capacitors charge and discharge profiles under different conditions. The parameters identified are life cycle, voltage, time, temperature, moisture, Equivalent Series Resistance (ESR) and leakage resistance. The accuracy of this electro-mathematical model is improved with a remodelling based on artificial neuronal networks. The experimental data and the results obtained with both models are compared to verify and weigh their accuracy. Results show that the models presented determine the behaviour of supercapacitors with similar accuracy and less complexity than electromechanical ones, thus, helping scaling low power systems for given conditions
Photovoltaic Energy Harvesting System Adapted for Different Environmental Operation Conditions: Analysis, Modeling, Simulation and Selection of Devices
The present research work proposes a photovoltaic energy harvester and an appropriate direct current (DC)/DC converter for a harvesting system after the study of the devices and taking the operation conditions. Parameters such as power, efficiency and voltage are taken into account under different environment conditions of illumination and temperature in order to obtain the best possible response. For this reason, suitable metal-oxide semiconductor field-effect transistor (MOSFET), diode, coil, frequency, duty-cycle and load are selected and analyzed for a DC/DC converter with boost architecture.This work has been supported by IK4-TEKNIKER research institute own funds and the joint work of
Electronics and Communications and Intelligent Information System units and by the Department of Education of
the Basque Government within the fund for research groups of the Basque university system [IT978-16]
Características de un Proyecto Educativo para Primero y Segundo Ciclo de Educación Básica que responda a la realidad de las Asociaciones Cooperativas Fase I del departamento de la Paz.
La Formación Económico Social Salvadoreña está en c r i s i s,
ésta se ve reflejada en el sistema de producción en general, que conlleva al agro a sufrir las mismas consecuencias, PO)"
ello el interés de investigar las características que debe reunir un Proyecto Educativo de Primero y Segundo Ciclo de Educación Básica que responda a l as necesidades, intereses y problemas de l niño hijo de los asociados cooperativistas agropecuarios del Sector Reformado Fase 1 del Departamento de La Paz
Caveolin-1 deficiency induces a MEK-ERK1/2-Snail-1-dependent epithelial-mesenchymal transition and fibrosis during peritoneal dialysis
Peritoneal dialysis (PD) is a form of renal replacement therapy whose repeated use can alter dialytic function through induction of epithelial-mesenchymal transition (EMT) and fibrosis, eventually leading to PD discontinuation. The peritoneum from Cav1-/- mice showed increased EMT, thickness and fibrosis. Exposure of Cav1-/- mice to PD fluids further increased peritoneal membrane thickness, altered permeability and increased the number of FSP-1/cytokeratin-positive cells invading the sub-mesothelial stroma. High-throughput quantitative proteomics revealed increased abundance of collagens, FN and laminin, as well as proteins related to TGF- activity in matrices derived from Cav1-/- cells. Lack of Cav1 was associated with hyperactivation of a MEK-ERK1/2-Snail-1 pathway that regulated the Smad2-3/Smad1-5-8 balance. Pharmacological blockade of MEK rescued E-cadherin and ZO-1 inter-cellular junction localization, reduced fibrosis and restored peritoneal function in Cav1-/- mice. Moreover, treatment of human PD-patient-derived MCs with drugs increasing Cav1 levels, as well as ectopic Cav1 expression, induced reacquisition of epithelial features. This study demonstrates a pivotal role of Cav1 in the balance of epithelial versus mesenchymal state and suggests targets for the prevention of fibrosis during PD
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