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Datos para el conocimiento del patrimonio minero de la comarca valenciana del Valle de Cofrentes – Ayora (Valencia, Comunidad Valenciana, Sistema Ibérico)

  • Mata Perello, Josep Maria
  • Alfonso Abella, María Pura
  • Climent Costa, Ferran
  • Parcerisa Duocastella, David
  • Vilaltella Farràs, Jaume
En este artículo, nos centraremos en el Patrimonio Minero de la comarca valenciana del Valle de Cofrentes - Ayora. Se trata de una comarca interior de la provincia de Valencia., situada cerca de la provincia de Albacete Por otra parte se halla de un territorio plenamente ubicado dentro del Sistema Ibérico, entre afloramientos de materiales mesozoicos, que fundamentalmente pertenecen al Cretácico y al Jurásico; aunque los afloramientos Triásicos son también muy abundantes. Dentro de esta comarca existen diversos elementos del Patrimonio Minero de la Comunidad Valenciana, aunque las actividades mineras no han gozado nunca de gran desarrollo. Estos elementos se hallan relacionados fundamentalmente con las Salinas y con los Hornos de Yeso. En esta comunicación, nos centraremos fundamentalmente en estos elementos del patrimonio minero.
Proyecto:


Influence of structure support printing parameters on surface finish of PLA hemispherical cups for emulation of ceramic hip prostheses

  • Buj Corral, Irene
  • Bagheri, Ali
  • Domínguez Fernandez, Alejandro
Hemispherical hip ceramic prostheses require certain degree of porosity on their external surface so as to fix them by means of osteointegration. This can be achieved with porous mesostructures. In contrast, internal surface needs to be smooth in order to assure appropriate sliding of femoral head. Such specific shapes can be obtained by means of 3D printing. However, in certain printing processes, structure supports are required when overhang exceeds a certain angle. In this case, once supports are removed, joints between supports and prostheses will produce irregularities which will increase roughness on the internal surface of the prostheses. In the future, bimaterial prostheses are to be printed in ceramic with plastic structure supports, which are cheaper than ceramic ones. For doing this, double head printing machines will be used. In the present work, as a first step of research, both prostheses and supports were printed in plastic material. Specifically, PLA, which is a biocompatible polymer, was used. Influence of printing variables for supports on surface finish of internal surface of hemispherical cups after removing supports was studied. Prostheses were obtained by means of Fused Deposition Modelling (FDM) technology. Full factorial design of experiments was performed, with three printing variables: Support Pillar Resolution, Horizontal Offset from Part and part, and Dense Infill Percentage. Regression analysis was carried out. Results showed that Support Pillar Resolution and Horizontal Offset from Part are main parameters factors influencing roughness parameters Ra and Rz. In order to obtain low roughness values, high Support Pillar Resolution should be selected. In case low Support Pillar Resolution was necessary, then high Horizontal Offset from Part would be recommended. In the future, research presented in the present work will help selecting proper values for printing parameters in order to obtain smooth internal surfaces of ceramic hemispherical hip prostheses. This will reduce or even avoid subsequent polishing time of the internal surface of the prostheses.
Proyecto:


E-EON : Energy-Efficient and Optimized Networks for Hadoop

  • Fischer e Silva, Renan
Energy efficiency and performance improvements have been two of the major concerns of current Data Centers. With the advent of Big Data, more information is generated year after year, and even the most aggressive predictions of the largest network equipment manufacturer have been surpassed due to the non-stop growing network traffic generated by current Big Data frameworks. As, currently, one of the most famous and discussed frameworks designed to store, retrieve and process the information that is being consistently generated by users and machines, Hadoop has gained a lot of attention from the industry in recent years and presently its name describes a whole ecosystem designed to tackle the most varied requirements of today’s cloud applications. This thesis relates to Hadoop clusters, mainly focused on their interconnects, which is commonly considered to be the bottleneck of such ecosystem. We conducted research focusing on energy efficiency and also on performance optimizations as improvements on cluster throughput and network latency. Regarding the energy consumption, a significant proportion of a data center's energy consumption is caused by the network, which stands for 12% of the total system power at full load. With the non-stop growing network traffic, it is desired by industry and academic community that network energy consumption should be proportional to its utilization. Considering cluster performance, although Hadoop is a network throughput-sensitive workload with less stringent requirements for network latency, there is an increasing interest in running batch and interactive workloads concurrently on the same cluster. Doing so maximizes system utilization, to obtain the greatest benefits from the capital and operational expenditures. For this to happen, cluster throughput should not be impacted when network latency is minimized. The two biggest challenges faced during the development of this thesis were related to achieving near proportional energy consumption for the interconnects and also improving the network latency found on Hadoop clusters, while having virtually no loss on cluster throughput. Such challenges led to comparable sized opportunity: proposing new techniques that must solve such problems from the current generation of Hadoop clusters. We named E-EON the set of techniques presented in this work, which stands for Energy Efficient and Optimized Networks for Hadoop. E-EON can be used to reduce the network energy consumption and yet, to reduce network latency while cluster throughput is improved at the same time. Furthermore, such techniques are not exclusive to Hadoop and they are also expected to have similar benefits if applied to any other Big Data framework infrastructure that fits the problem characterization we presented throughout this thesis. With E-EON we were able to reduce the energy consumption by up to 80% compared to the state-of-the art technique. We were also able to reduce network latency by up to 85% and in some cases, even improve cluster throughput by 10%. Although these were the two major accomplishment from this thesis, we also present minor benefits which translate to easier configuration compared to the stat-of-the-art techniques. Finally, we enrich the discussions found in this thesis with recommendations targeting network administrators and network equipment manufacturers., La eficiencia energética y las mejoras de rendimiento han sido dos de las principales preocupaciones de los Data Centers actuales. Con el arribo del Big Data, se genera más información año con año, incluso las predicciones más agresivas de parte del mayor fabricante de dispositivos de red se han superado debido al continuo tráfico de red generado por los sistemas de Big Data. Actualmente, uno de los más famosos y discutidos frameworks desarrollado para almacenar, recuperar y procesar la información generada consistentemente por usuarios y máquinas, Hadoop acaparó la atención de la industria en los últimos años y actualmente su nombre describe a todo un ecosistema diseñado para abordar los requisitos más variados de las aplicaciones actuales de Cloud Computing. Esta tesis profundiza sobre los clusters Hadoop, principalmente enfocada a sus interconexiones, que comúnmente se consideran el cuello de botella de dicho ecosistema. Realizamos investigaciones centradas en la eficiencia energética y también en optimizaciones de rendimiento como mejoras en el throughput de la infraestructura y de latencia de la red. En cuanto al consumo de energía, una porción significativa de un Data Center es causada por la red, representada por el 12 % de la potencia total del sistema a plena carga. Con el tráfico constantemente creciente de la red, la industria y la comunidad académica busca que el consumo energético sea proporcional a su uso. Considerando las prestaciones del cluster, a pesar de que Hadoop mantiene una carga de trabajo sensible al rendimiento de red aunque con requisitos menos estrictos sobre la latencia de la misma, existe un interés creciente en ejecutar aplicaciones interactivas y secuenciales de manera simultánea sobre dicha infraestructura. Al hacerlo, se maximiza la utilización del sistema para obtener los mayores beneficios al capital y gastos operativos. Para que esto suceda, el rendimiento del sistema no puede verse afectado cuando se minimiza la latencia de la red. Los dos mayores desafíos enfrentados durante el desarrollo de esta tesis estuvieron relacionados con lograr un consumo energético cercano a la cantidad de interconexiones y también a mejorar la latencia de red encontrada en los clusters Hadoop al tiempo que la perdida del rendimiento de la infraestructura es casi nula. Dichos desafíos llevaron a una oportunidad de tamaño semejante: proponer técnicas novedosas que resuelven dichos problemas a partir de la generación actual de clusters Hadoop. Llamamos a E-EON (Energy Efficient and Optimized Networks) al conjunto de técnicas presentadas en este trabajo. E-EON se puede utilizar para reducir el consumo de energía y la latencia de la red al mismo tiempo que el rendimiento del cluster se mejora. Además tales técnicas no son exclusivas de Hadoop y también se espera que tengan beneficios similares si se aplican a cualquier otra infraestructura de Big Data que se ajuste a la caracterización del problema que presentamos a lo largo de esta tesis. Con E-EON pudimos reducir el consumo de energía hasta en un 80% en comparación con las técnicas encontradas en la literatura actual. También pudimos reducir la latencia de la red hasta en un 85% y, en algunos casos, incluso mejorar el rendimiento del cluster en un 10%. Aunque estos fueron los dos principales logros de esta tesis, también presentamos beneficios menores que se traducen en una configuración más sencilla en comparación con las técnicas más avanzadas. Finalmente, enriquecimos las discusiones encontradas en esta tesis con recomendaciones dirigidas a los administradores de red y a los fabricantes de dispositivos de red.
Proyecto:


Genetic effects on gene expression across human tissues

  • Aguet, François
  • Muñoz Aguirre, Manuel
Characterization of the molecular function of the human genome and its variation across individuals is essential for identifying the cellular mechanisms that underlie human genetic traits and diseases. The Genotype-Tissue Expression (GTEx) project aims to characterize variation in gene expression levels across individuals and diverse tissues of the human body, many of which are not easily accessible. Here we describe genetic effects on gene expression levels across 44 human tissues. We find that local genetic variation affects gene expression levels for the majority of genes, and we further identify inter-chromosomal genetic effects for 93 genes and 112 loci. On the basis of the identified genetic effects, we characterize patterns of tissue specificity, compare local and distal effects, and evaluate the functional properties of the genetic effects. We also demonstrate that multi-tissue, multi-individual data can be used to identify genes and pathways affected by human disease-associated variation, enabling a mechanistic interpretation of gene regulation and the genetic basis of disease.
Proyecto:


The complete form of moment equations of stellar dynamics

  • Cubarsí Morera, Rafael
The exact mathematical expression for an arbitrary nth-order stellar hydrodynamic equation is explicitly obtained depending on the central moments of the velocity distribution. In such a form the equations are physically meaningful, since they can be compared with the ordinary hy- drodynamic equations of compressible, viscous fluids. The equations are deduced without any particular assumptions about symmetries, steadi- ness, or particular kinematic behaviours, so that they can be used in their complete form, and for any order, in future works with improved observational data. Also, in order to work with a finite number of equa- tions and unknowns, which would provide a dynamic model for the stel- lar system, the nth-order equation is needed to investigate in a more general way the closure conditions, which may be expressed in terms of velocity distribution statistics, as it is shown in a case example.
Proyecto:


High-radix division and square-root with speculation

  • Cortadella, Jordi
  • Lang Korpel, Thomas
The speed of high-radix digit-recurrence dividers and square-root units is mainly determined by the complexity of the result-digit selection. We present a scheme in which a simpler function speculates the result digit, and, when this speculation is incorrect, a rollback or a partial advance is performed. This results in operations with a shorter cycle time and a variable number of cycles. The scheme can be used in separate division and square-root units, or in a combined one. Several designs were realized and compared in terms of execution time and area. The fastest unit considered is a radix-512 divider with a partial advance of six bits., Peer Reviewed
Proyecto:


Propuesta para el proyecto “Sistema de gestión sostenible del patrimonio arquitectónico y cultural de la ciudad de Cuenca en Ecuador.

  • Garcia-Almirall, M. Pilar
  • Queraltó Ros, Pau
Projecte elaborat pel CPSV en motiu de la Convocatoria Abierta y Permanente (CAP) de la Agencia Española de Cooperación y Desarrollo.
Proyecto:


An investigation of the thermal conductivity of epoxy resin systems filled with boron nitride particles

  • Folch Roy, Adrià
The principal objective of this TFG is to investigate the enhancement of the thermal conductivity of an epoxy-thiol system by the incorporation of boron nitride (BN) particles in the epoxy matrix. Two approaches will be used: (i) the use of two different types of BN particles, namely platelets with average particle size 2 microns, and aggregates with average size 80 microns; and (ii) the use of dual cure procedures, the first stage cure taking place in an off-stoichiometric system and the second stage cure occurring by homopolymerisation. If time permits, a further objective would be to investigate the effect of mechanical modification of the particle distribution after the first stage of the cure., Epoxy composites containing boron nitride (BN) particles of different sizes, different combinations and different quantities have been studied with a view to obtaining an increased thermal conductivity. To investigation consists of two aspects: the analysis of the cure kinetics and the measurement of the thermal conductivity of the cured composites. The cure kinetics of the different samples has been studied using differential scanning calorimetry (DSC) for all different systems. It has been used up to a 70% of weight of boron nitride as a filler with more of this quantity made the mixture hardly manipulable. For these systems, it has been noticed that the effect of filler on peak temperature measured by DSC in general it increases as the system contains more boron nitride. Later results showed that a strong relationship between the peak temperature and the thermal conductivity of the cured sample existed. On the other hand, hybrid composites showed a decrease on the thermal conductivity when it was expected an improvement, that only came through adding more boron nitride to the sample and not for the combination itself. The dual cure process showed promising results that are going to lead for further development in this line as it is seen that first stage cured sample provide ease of processability.
Proyecto:


Diseño de una célula vivienda para pick up

  • Barjola Martínez, Daniel
Este proyecto trata los aspectos fundamentales de diseño de una célula vivienda móvil ligera destinada a un vehículo 4x4 del tipo pick up. En primer lugar, se ha realizado un breve repaso a la situación actual de vehículos 4x4 "camperizables" . Se han comentado las diferentes opciones que ofrece el mercado, así como la normativa vigente aplicable sobre estos vehículos. Posteriormente el estudio se ha centrado en las células vivienda móviles ligeras destinadas a pick ups. La fase de diseño ha empezado recopilando las dimensiones de las zonas de carga de las pick ups más vendidas en la actualidad. A partir de estas dimensiones se han definido unas dimensiones críticas con el fin de diseñar una estructura genérica compatible con el mayor número de vehículos. En segundo lugar, se han definido tanto los materiales de fabricación como los acabados. Para ello se han tenido en cuenta las condiciones de uso a las cuales va a estar expuesta la célula. Seguidamente se ha definido y diseñado el equipamiento a instalar en la célula. Una vez definido el equipamiento se ha realizado un pequeño esquema sobre la instalación eléctrica, de gas y de agua de la célula. En tercer lugar, se ha realizado un nuevo sistema de acople entre la célula vivienda y la base mecánica. Para el desarrollo de este sistema se ha analizado de manera conjunta las particularidades de los vehículos pick up y las restricciones que conlleva una célula vivienda de estas características. Finalmente se ha realizado un estudio de validez del diseño utilizando un software basado en elementos finitos para comprobar la rigidez y resistencia de la estructura. Para ello se han simulado dos situaciones. Por un lado, se ha realizado un análisis simulando una frenada brusca del conjunto pick up y célula. Mientras que, por otro lado, se ha realizado un estudio sobre un hipotético caso de vuelco de la célula. Los resultados obtenidos en ambas simulaciones han sido fundamentales en la fase de rediseño para ir mejorando las características de la estructura. Por último, se ha realizado un estudio económico referente al coste del proyecto. De la misma manera, se ha hecho un estudio ambiental
Proyecto:


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