Now showing items 7721-7740 of 41723

    Contributions to the algorithms and methodologies for virtual infrastructure provisioning 

    Ferrer Riera, Jordi (Date of defense: 2016-01-20)

    Virtualization is defined as the process consisting of building a virtual resource on top of one or several physical resources, depending on the selected paradigm: aggregation or partitioning. From the net- working ...

    Contributions to the Content-Based Image Retrieval Using Pictorial Queris 

    Borràs Agnosto, Agnès (Date of defense: 2009-11-06)

    L'accés massiu a les càmeres digitals, els ordinadors personals i a Internet, ha propiciat la creació de grans volums de dades en format digital. En aquest context, cada vegada adquireixen major rellevància totes aquelles ...

    Contributions to the continuum modelling of strong discontinuities in two-dimensional solids 

    Samaniego Alvarado, Esteban (Date of defense: 2003-03-28)

    El estudio de la mecánica computacional de fallo ha ganado creciente popularidad en los últimos años. Modelizar el comportamiento poscrítico de estructuras puede alcanzar un grado elevado de complejidad, debido a la ...

    Contributions to the design and operation of a multilevel-active-clamped Dc-Ac grid- connected power converter for wind energy conversion systems 

    Caballero Diaz, Luis (Date of defense: 2017-06-16)

    The demand of wind energy has considerably increased during the last decades. In order to fulfil this great energy demand, wind energy conversion systems (WECS) are designed to manage higher power ratings. Currently, the ...

    Contributions to the design of energy harvesting systems for autonomous sensors in low power marine applications 

    Carandell Widmer, Matias (Date of defense: 2022-04-28)

    Oceanographic sensor platforms provide biological and meteorological data to help understand changes in marine environment and help to preserve it. Lagrangian drifters are autonomous passive floating platforms used in ...

    Contributions to the design, development and evaluation of network processors for automotive zonal gateway controllers 

    González Mariño, Ángela (Date of defense: 2023-10-27)

    (English) This PhD dissertation analyzes the evolution of vehicular networks and focuses on the main network processing platform integrated in them: the Gateway (GW). First, a thorough analysis of state of the art technologies ...

    Contributions to the determination of electromagnetic bias in Gnss-R altimetry 

    Ghavidel, Ali (Date of defense: 2015-07-14)

    In this Ph. D. dissertation the electromagnetic bias in GNSS-R (Global Navigation Satellite Systems Reflectometry) altimetry has been studied. GNSS-R altimetry is a new type of system that uses navigation signals as signals ...

    Contributions to the determination of thermal behaviour of façades using quantitative internal IRT (Infrared Thermography) 

    Tejedor Herrán, Blanca (Date of defense: 2019-01-24)

    Within the European framework, most of residential buildings do not satisfy the minimum thermal specifications. In fact, the renovation rate across the EU is estimated at 1% per year. To fulfil with the goals stated by ...

    Contributions to the development and validation of fMRI-based biomarkers for drug discovery in social anxiety disorder 

    Ortiz València, Héctor (Date of defense: 2016-02-02)

    This document presents the theoretical background and experimental work made to develop and validate a set of experiments based on functional magnetic resonance imaging (fMRI). These experiments are aimed to demonstrate ...

    Contributions to the development of a bio-electronic regenerative interface for the injured peripheral nerve 

    Santos Rojas, Daniel (Date of defense: 2016-07-21)

    Els dispositius neuroprostètics han anat evolucionant en els darrers anys amb l’objectiu de substituir o recuperar les funcions de extremitats en pacients amputats. No obstant, segons la literatura més actual, els avenços ...

    Contributions to the development of active RFID systems at the 433 MHz band 

    Tuset Peiró, Pere (Date of defense: 2015-03-13)

    Donat el potencial de la tecnologia RFID activa, aquesta tesi contribueix al seu desenvolupament centrant-se en les capes més baixes de la pila de protocols, és a dir, la capa física i la capa d'enllaç de dades. Aquestes ...

    Contributions to the Development of Cured-in-Place Pipe Composite Liners for Pressure Water Pipes Rehabilitation 

    Gras Travesset, Ferran (Date of defense: 2024-01-12)

    En les darreres dècades, l'envelliment de les canonades s'ha convertit en una realitat en la majoria dels països desenvolupats principalment degut a les insuficients taxes de renovació. El deteriorament generalitzat de les ...

    Contributions to the energy management of industrial refrigeration systems: a data-driven perspective 

    Cirera Balcells, Josep (Date of defense: 2020-09-18)

    Nowadays, energy management has gained attention due to the constant increment of energy consumption in industry and the pollution problems that this fact supposes. On this subject, one of the main industrial sectors, the ...

    Contributions to the environmental assessment of road transport 

    Moliner Santisteve, Enrique (Date of defense: 2013-10-31)

    El objetivo de esta tesis es proporcionar un mayor grado de conocimiento sobre ciertos aspectos medioambientales del transporte por carretera que aún no han sido investigados en profundidad. En concreto, la tesis aborda ...

    Contributions to the evaluation and improvement of LoRaWAN 

    Casals Ibáñez, Lluís (Date of defense: 2023-05-30)

    (English) Low Power Wide Area Network (LPWAN) technologies have gained significant momentum as wireless solutions for implementing Internet of Things (IoT) applications and services. The unique set of LPWAN features, such ...

    Contributions to the evolution of next generation WLANs 

    Afaqui, Muhammad Shahwaiz (Date of defense: 2017-06-28)

    The explosive growth in usage of IEEE 802.11 based WLAN networks has resulted in dense deployments in diverse environments and has made the concept of anytime - anywhere data connectivity a realm of commercial reality. The ...

    Contributions to the future media internet using service-oriented architectures 

    González Cela, Alberto José (Date of defense: 2012-09-26)

    Nowadays, video streaming applications are the most bandwidth-hungry applications and this tendency is envisaged to grow exponentially. With the proliferation of multimedia capable devices, multimedia services have to ...

    Contributions to the implementation of integrated environmental and health and safety management systems in construction companies 

    Gangolells, Marta (Date of defense: 2010-01-08)

    Molts dels problemes i obstacles que més freqüentment han d’encarar les empreses constructores durant el procés d’implementació i ús de sistemes integrats de gestió mediambiental i de seguretat i salut estan relacionats ...

    Contributions to the interactive visualization of medical volume models in mobile devices 

    Campoalegre Vera, Lázaro (Date of defense: 2014-07-11)

    With current medical imaging improvements, specialists are being able to obtain correct information of anatomical structures of the human organism. By using different image visualization techniques, experts can obtain ...

    Contributions to the knowledge of a new disease caused by an amoeba in ongrowing Senegalese sole, Solea senegalensis (Kaup 1858) 

    Constenla Matalobos, María (Date of defense: 2013-01-25)

    la costa atlántica de España. Esta patología se caracteriza por la presencia de protuberancias que se evidencian a través de la piel de los peces afectados. Estas lesiones se corresponden con nódulos en el tejido muscular, ...