Proceso completo de modelado de un personaje para videojuego AAA

[ES] Modelado, texturizado y renderizado de un personaje en tres dimensiones previamente diseñado. Este trabajo emula la figura profesional del `3D Character Artist¿ dentro de la industria del videojuego, quien se encarga del desarrollo tridimensional de un personaje delineado por un equipo artístico previo. Entre estas fases, se encuentran además de la propia escultura digital, etapas como el texturizado, la realización del ropaje, e incluso el renderizado que presentará públicamente el trabajo previamente realizado. Este Trabajo Final de Grado tiene como finalidad realizar una pieza de portafolio profesional que sirva como presentación profesional en vistas al futuro laboral.[EN] Modeling, texturing and rendering of a previously designed three-dimensional character. This work emulates the professional figure of the '3D Character Artist' within the video game industry, who is in charge of the three-dimensional development of a character outlined by a previous artistic team. Among these phases, besides the digital sculpture itself, there are stages such as texturing, the making of clothing, and even the rendering that will publicly present the work previously done. The purpose of this Final Degree Project is to create a professional portfolio piece that will serve as a professional presentation for future work.Alandete Piñero, D. (2020). Proceso completo de modelado de un personaje para videojuego AAA. http://hdl.handle.net/10251/148487TFG

Boron concentration profiling by high angle annular dark field-scanning transmission electron microscopy in homoepitaxial delta-doped diamond layers

To develop further diamond related devices, the concentration and spatial location of dopants should be controlled down to the nanometer scale. Scanning transmission electron microscopy using the high angle annular dark field mode is shown to be sensitive to boron doping in diamond epilayers. An analytical procedure is described, whereby local boron concentrations above 1020 cm-3 were quantitatively derived down to nanometer resolution from the signal dependence on thickness and boron content. Experimental boron local doping profiles measured on diamond p-/p++/p- multilayers are compared to macroscopic profiles obtained by secondary ion mass spectrometry, avoiding reported artefacts.4 page

Intracorneal Ring Segment Implantation for the Management of Keratoconus in Children

The short-term safety and efficacy of intracorneal ring segment (ICRS) implantation in keratoconus eyes of children are investigated in this study. A retrospective interventional case series study including a total of 33 keratoconus eyes (age 8 to 17 years) that had undergone ICRS (Keraring segments, Mediphacos) implantation was conducted. Information about visual, refractive, pachymetric, corneal topographic and aberrometric, and corneal endothelial changes during a 3-month follow-up were extracted and analysed. A significant improvement was observed in logMAR corrected distance visual acuity (p = 0.005), combined with a statistically significant reduction in keratometric readings (p < 0.001). A reduction in the magnitude of corneal astigmatism of ≥1 D was observed in 52.8% of eyes. No significant changes were observed in corneal endothelial density (p = 0.317). Significant changes were found in the anterior vertical coma component (p = 0.002) as well as in the spherical aberration of the posterior corneal surface (p = 0.004). Only two relevant complications were described: one corneal microperforation with penetration of the ring segment into the anterior chamber (1 eye, 2.8%), and a case of ring extrusion (1 eye, 2.8%). ICRS implantation in children keratoconus eyes allows a reduction of corneal astigmatism, irregularity, and aberrations, leading to a significant visual improvement.The author David P Piñero has been supported by the Ministry of Economy, Industry and Competitiveness of Spain within the program Ramón y Cajal, RYC-2016-20471

Changes in and the mediating role of physical activity in relation to active school transport, fitness and adiposity among Spanish youth: the UP&DOWN longitudinal study

Background Longitudinal changes in child and adolescent active school transport (AST), and the mediating role of different intensities of daily physical activity (PA) levels in relation to AST and physical fitness and adiposity indicators is unclear. This study aimed to: 1) describe longitudinal changes in AST, light PA (LPA), moderate- to vigorous-intensity PA (MVPA), physical fitness and adiposity indicators over three time-points; and 2) investigate the mediating role of LPA and MVPA levels on associations between AST and physical fitness and adiposity indicators over three time-points among children and adolescents. Methods This longitudinal study comprised 1646 Spanish children and adolescents (48.8% girls, mean age 12.5 years +/- 2.5) at baseline, recruited from schools in Cadiz and Madrid. Mode of commuting to school was self-reported at baseline (T0, 2011-12), 1-year (T1) and 2-year follow-up (T2). PA was assessed using accelerometers. Handgrip strength, standing long jump and cardiorespiratory fitness (CRF) assessed physical fitness. Height, weight, body mass index, waist circumference, and triceps and subscapular skinfold thickness were measured. Multilevel linear regression analyses assessed changes in AST, PA levels, physical fitness and adiposity indicators over three time-points (T0-T1-T2). Additionally, longitudinal path analysis (n = 453; mean age [years] 12.6 +/- 2.4) was used to test the mediating effects of LPA and MVPA levels on the association between AST and physical fitness and adiposity indicators. Results Multilevel analyses observed decreases in LPA between T0-T1 (beta = - 11.27; p < 0.001) and T0-T2 (beta = - 16.27; p < 0.001) and decreases in MVPA between T0-T2 (beta = - 4.51; p = 0.011). Moreover, changes over time showed increases in handgrip between T0-T1 (beta = 0.78; p = 0.028) and T0-T2 (beta = 0.81; p = 0.046). Path analyses showed that AST was directly positively associated with MVPA at T1 (all, beta approximate to 0.33; p < 0.001). MVPA at T1 mediated associations between AST and CRF at T2 (beta = 0.20; p = 0.040), but not the other outcomes. LPA did not mediate any associations. Conclusions Results from longitudinal path analysis suggest that participation in more AST may help attenuate declines in MVPA that typically occur with age and improve CRF. Therefore, we encourage health authorities to promote AST, as a way to increase MVPA levels and CRF among youth

Els sistemes d'informació geogràfica en la gestió del transport

L'objectiu d'aquest treball és ensenyar l'aplicació i el potencial dels Sistemes d'Informació Geogràfica per a la gestió del transport, utilitzant l'anàlisi de xarxes podem gestionar, controlar i fer més eficient la gestió de residus. En primer lloc, es defineix que són els SIG i quines són les seves aplicacions més rellevants que s'estan fent en el món. En segon lloc, s'apliquen el SIG en la gestió del transport a través de l'anàlisi multicriteri, específicament el Vehicle Routing Problem, per realitzar l'optimització de les rutes de recollida de residus en uns casos concrets situats en el Vallès Oriental. Finalment, es remarca com mitjançant el SIG i les seves potencialitats, és possible millorar la gestió de les nostres ciutats.El objetivo de este trabajo es enseñar la aplicación y potencial de los Sistemas de Información Geográfica para la gestión del transporte, utilizando el análisis de redes podemos gestionar, controlar y hacer más eficiente la gestión de residuos. En primer lugar, se define que son los SIG y cuáles son sus aplicaciones más relevantes que se están realizando en el mundo. En segundo lugar, se aplica el SIG en la gestión del transporte a través del análisis multicriterio, específicamente el Vehículo Routing Problem, para realizar la optimización de las rutas de recogida de residuos en unos casos concretos situados en el Vallès Oriental. Por último, se remarca como mediante el SIG y sus potencialidades, es posible mejorar la gestión de nuestras ciudades.This project represents the great application and potential of Geographical Information Systems for transport management. Firstly, a brief theoretical part regarding GIS and their most important applications are defined. Secondly, the case study of Vallès Oriental is presented using ArcGIS multicriteria analysis, specifically the Routing Problem Vehicle for the optimization of waste collection routes. In conclusion, this projects highlights the potential of GIS Network Analysis to manage, control and make transport more efficient, specifically for waste management. And, more generally, to improve the management of our cities

Reinforced silica-carbon nanotube monolithic aerogels synthesised by rapid controlled gelation

This work introduces a new synthesis procedure for obtaining homogeneous silica hybrid aerogels with carbon nanotube contents up to 2.50 wt.%. The inclusion of nanotubes in the highly porous silica matrix was performed by a two-step sol–gel process, resulting in samples with densities below 80 mg/cm3. The structural analyses (N2 physisorption and SEM) revealed the hierarchical structure of the porous matrix formed by nanoparticles arranged in clusters of 100 and 300 nm in size, specific surface areas around 600 m2/g and porous volumes above 4.0 cm3/g. In addition, a relevant increase on the mechanical performance was found, and an increment of 50% for the compressive strength and 90% for the maximum deformation were measured by uniaxial compression. This reinforcement was possible thanks to the outstanding dispersion of the CNT within the silica matrix and the formation of Si–O–C bridges between nanotubes and silica matrix, as suggested by FTIR. Therefore, the original synthesis procedure introduced in this work allows the fabrication of highly porous hybrid materials loaded with carbon nanotubes homogeneously distributed in the space, which remain available for a variety of technological applications

Long-term in situ persistence of biodiversity in tropical sky islands revealed by landscape genomics

Tropical mountains are areas of high species richness and endemism. Two historical phenomena may have contributed to this: (1) fragmentation and isolation of habitats may have promoted the genetic differentiation of populations and increased the possibility of allopatric divergence and speciation, and; (2) the mountain areas may have allowed long-term population persistence during global climate fluctuations. These two phenomena have been studied using either species occurrence data or estimating species divergence times. However, only few studies have used intraspecific genetic data to analyse the mechanisms by which endemism may emerge at the microevolutionary scale. Here, we use landscape analysis of genomic SNP data sampled from two high-elevation plant species from an archipelago of tropical sky-islands (the Transmexican Volcanic Belt) to test for population genetic differentiation, synchronous demographic changes and habitat persistence. We show that genetic differentiation can be explained by the degree of glacial habitat connectivity among mountains, and that mountains have facilitated the persistence of populations throughout glacial/interglacial cycles. Our results support the ongoing role of tropical mountains as cradles for biodiversity by uncovering cryptic differentiation and limits to gene flow