Now showing items 117-136 of 152

    Problemas de contorno discretos 

    Encinas Bachiller, Andrés Marcos (Date of defense: 2001-10-01)

    En este trabajo se ha desarrollado un cálculo vectorial sobre estructuras discretas, análogo al de los modelos continuos. Para ello se ha considerado como espacio subyacente un multigrafo finito o variedad discreta y se ...

    Process understanding of induced seismicity during stimulation of enhanced geothermal systems 

    Vaezi Anzeha, Iman (Date of defense: 2023-12-21)

    (English) This doctoral thesis investigates the causes that induce (micro)seismicity as a result of hydraulic stimulation in fractured low-permeability rock. Understanding such phenomenon is of paramount importance to ...

    Puentes de la época medieval en las cuencas de los ríos Ter, Fluviá y Muga 

    López Sánchez, Ángel (Date of defense: 2010-11-16)

    The work’s development is made by scientific method stages: aims statement, hypothesis establishment and work method to check hypothesis. Conclusions are given at the end. It is supported by: a) Bibliographical review, ...

    Quantifying uncertainty in complex automotive crashworthiness computational models : development of methodologies and implementation in VPS/Pamcrash 

    Rocas Alonso, Marc (Date of defense: 2021-07-23)

    The automotive industry is constantly involved in the development of new methodologies and projects with the aim of reducing costs. During the vehicle design process, one of the most significant cost arises from building ...

    Quick assessment through analytical solutions of induced seismicity in geo-energy applications 

    Wu, Haiqing (Date of defense: 2023-07-28)

    (English) Understanding the triggering mechanisms of induced seismicity remains one of the most critical challenges in geo-energy applications. This Thesis aims at assessing (1) fault stability and induced seismicity ...

    Representació gràfica del planejament: evolució del model i perspectives davant dels nous reptes de l'ordenació. 

    Gomis Sánchez, Jordi (Date of defense: 2012-07-10)

    Throughout history, man has had the need to communicate through drawings, and drawing has evolved as another language. The technical aspect of drawing has sought to represent objects as faithfully as possible, both insofar ...

    Robust structural damage detection by using statistical hybrid algorithms 

    Camacho Navarro, Jhonatan (Date of defense: 2019-07-15)

    This thesis presents the results of applying a statistical hybrid approach for structural health monitoring using piezo actuating signals. Where, by combining statistical processing based on Principal Component Analysis ...

    Scalable domain decomposition methods for finite element approximations of transient and electromagnetic problems 

    Olm Serra, Marc (Date of defense: 2019-02-18)

    The main object of study of this thesis is the development of scalable and robust solvers based on domain decomposition (DD) methods for the linear systems arising from the finite element (FE) discretization of transient ...

    Sedimentación fina y corrientes de turbiedad en embalses. Caso de estudio: Embalse Amaluza (Ecuador) 

    Larriva Villarreal, Hernán Javier (Date of defense: 2023-11-06)

    (English) Turbidity currents in reservoirs are of strong scientific interest because they can be responsible for the contribution of large amounts of fine sediments that can cause early sediment filling. The case study ...

    Sewage sludge treatment in constructed wetlands: technical, economic and environmental aspects applied to small communities of the mediterranean region. 

    Uggetti, Enrica (Date of defense: 2011-09-30)

    During the last years, the implementation of new Wastewater Treatment Plants has lead to a significant increase of sludge production. As a response, sludge valorisation in agriculture is the preferred option nowadays, ...

    Simulación numérica de procesos de compactación de pubimateriales 

    Cante Terán, Juan Carlos (Date of defense: 1995-07-19)

    En esta tesis se presenta un modelo numérico para simular la fase de compactación de pulvimateriales y su implementación en ordenadores de cálculo paralelo, con el ánimo de facilitar y mejorar el diseño de los procesos de ...

    Sistema de evaluación y priorización de inversiones públicas 

    Boix Cots, David (Date of defense: 2023-12-15)

    (English) This doctoral thesis addresses one of the most significant challenges facing the Spanish administration: the efficient selection and management of public investments. To achieve this goal, the 'Public Investment ...

    Software development for the optimization of the influence of wind flows within energy applications and sustainable town planning 

    Germano, Nicola (Date of defense: 2021-12-14)

    This thesis aims to propose and validate an innovative, fully open-source framework capable of performing multiscale analysis for the assessment of local wind flows within the urban fabric. Each part of the framework is ...

    Spaceborne SAR imagery for monitoring the inundation in the Doñana wetlands 

    Martí Cardona, Belén (Date of defense: 2014-05-14)

    The Doñana wetlands, in Southwest Spain, undergo yearly cycles of inundation in fall and drying out during the spring season. As any wetland ecosystem, Doñana depends critically on its water resources. Important monitoring ...

    Stabilized finite element formulations for solving incompressible magnetohydrodynamics 

    Planas Badenas, Ramon (Date of defense: 2013-11-25)

    Magnetohydrodynamics (MHD) is the physics branch that studies electrically conducting fluids under external magnetic fields. This thesis deals with the numerical approximation using stabilized finite element methods of two ...

    Stabilized reduced order models for low speed flows 

    Reyes Sotomayor, Ricardo (Date of defense: 2020-03-23)

    This thesis presents the a stabilized projection-based Reduced Order Model (ROM) formulation in low speed fluid flows using a Variational Multi-Scale (VMS) approach. To develop this formulation we use a Finite Element (FE) ...

    Static and dynamic global stiffness analysis for automotive pre-design 

    Cavaliere, Fabiola (Date of defense: 2022-04-06)

    In order to be worldwide competitive, the automotive industry is constantly challenged to produce higher quality vehicles in the shortest time possible and with the minimum costs of production. Most of the problems with ...

    Strategies for improving import yard performance at container marine terminals 

    Martín Alcalde, Enrique (Date of defense: 2014-07-22)

    The process of containerization and its continuous development involves changes and technological innovations in containerships and maritime container terminals. In the current era of "gigantism", despite existing fleet ...

    Stress monitoring of cylindrical structures using guided waves 

    Quiroga Méndez, Jabid E. (Date of defense: 2018-06-29)

    This thesis presents some approaches for guided wave based stress monitoring as a part of Structural Health Monitoring (SHM). SHM systems include different levels, from damage detection to prognosis, however, this work is ...

    Submerged vanes turbulence : experimental analysis 

    Hamad Mohamed, Khaled M. A. (Date of defense: 2015-12-14)

    Experimental study was conducted to analyze the physical flow turbulence and sediment distribution with submerged vane. The objectives behind the investigation were verified and compare results with the Odgaard theory, ...