Now showing items 141-160 of 178

    Adaptive hybrid discontinuous methods for fluid and wave problems 

    Giorgiani, Giorgio (Date of defense: 2013-04-02)

    This PhD thesis proposes a p-adaptive technique for the Hybridizable Discontinuous Galerkin method (HDG). The HDG method is a novel discontinuous Galerkin method (DG) with interesting characteristics. While retaining all ...

    Evolución de las áreas productivas y sus requerimientos de insfraestructuras de urbanización 

    Turón Rodriguez, Carlos (Date of defense: 2013-03-20)

    Las transformaciones que se han venido produciendo en el sistema productivo, a lo largo de los últimos cincuenta años en España, con la pérdida de peso de la actividad propiamente manufacturera en beneficio de los servicios, ...

    PIV applications in vortex rings and oscillatory boundary layers 

    Mujal Colilles, Anna (Date of defense: 2013-05-13)

    Particle Image Velocimetry (PIV) is one of the most used experimental techniques in fluid mechanics to obtain the velocity field of a flow. One of its most celebrated characteristics is that it does not have interference ...

    Model predictive control of resonance sensitive irrigation canals 

    Horváth, Klaudia (Date of defense: 2013-05-30)

    Saving water is an economic and ecological need. One way to save water is to reduce losses in irrigation networks by canal automation. The goal of canal automation is to make the right amount of water to at arrive in the ...

    Hidrometeorología y balance térmico de la marisma de Doñana 

    Ramos Fuertes, Anaïs (Date of defense: 2012-10-23)

    Doñana marshes are a wetland of ecological relevance at an international level. They are located on the right bank of the final Guadalquivir River, in the regions of Huelva and Seville in SW Spain. They occupy an area of ...

    Highway travel time estimation with data fusion 

    Soriguera Martí, Francesc (Date of defense: 2010-12-15)

    La informació sobre el temps de viatge és l'indicador clau en el funcionament operatiu d’una autopista i un dels inputs més apreciats pels seus usuaris. Tot i això, no ha estat fins molt darrerament que els operadors ...

    The Fixed-Mesh ALE method applied to multiphysics problems using stabilized formulations 

    Baiges Aznar, Joan (Date of defense: 2011-01-14)

    The finite element method is a tool very often employed to deal with the numerical simulation of multiphysics problems.Many times each of these problems can be attached to a subdomain in space which evolves in time. Fixed ...

    Bedload transport of sand-gravel mixtures with antidunes: flume experiments 

    Núñez González, Francisco (Date of defense: 2012-07-20)

    In this thesis, the interaction between flow and sediment in alluvial channels is studied from an empirical approach, for conditions close or pertaining to supercritical flow, and for four types of sediment: sand, gravel ...

    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 ...

    Thermo-hydro-mechanical impacts of carbon dioxide (CO2) injection in deep saline aquifers. 

    Vilarrasa Riaño, Víctor (Date of defense: 2012-07-20)

    Los procesos termo-hidro-mecánicos relacionados con el almacenamiento geológico de carbono deben ser entendidos y cuantificados para demostrar a la opinión pública de que la inyección de dióxido de carbono (CO2) es segura. ...

    El règim tèrmic del tram inferior de l'Ebre i les seues alteracions. 

    Prats Rodríguez, Jordi (Date of defense: 2011-09-27)

    This thesis deals with the study of the thermal regime of the lower Ebro River (Spain), between the towns of Escatrón and Miravet, at different time scales (multiannual, annual, monthly, diel), as well as the alterations ...

    Numerical approach for modeling steel fiber reinforced concrete 

    Pros Parés, Alba (Date of defense: 2012-02-06)

    One alternative to overcome the main drawbacks of plain concrete in tension (its brittleness and weakness) is Steel Fiber Reinforced Concrete (SFRC), a technique introduced in the 70's, which consists of adding steel fibers ...

    Key challenges in the governance of rural water supply: lessons learnt from tanzania 

    Jiménez Fernández de Palencia, Alejandro (Date of defense: 2010-05-17)

    El primer objetivo de esta tesis es la identificación y análisis de aspectos clave para la gobernanza de los servicios de agua rural en países que adolecen de bajos niveles de cobertura, altos índices de pobreza, se ...

    A study of the structure of radar rainfall and its errors 

    Llort Pavon, Xavier (Date of defense: 2010-06-28)

    Els objectius principals d’aquesta tesi són dos: d’una banda estudiar l’estructura de la variabilitat de la precipitació a diferents escales espacials i temporals, i de l’altra, estudiar l’estructura dels errors en les ...

    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, ...

    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, ...

    Hierarchical semiactive control of base-isolated structures 

    Bahar, Arash (Date of defense: 2009-07-03)

    En la ingeniería estructural, uno de los desafíos constantes es encontrar nuevas formas de proteger las estructuras de las fuerzas medioambientales. El aislamiento sísmico se ha mostrado como una forma efectiva de reducir ...

    Subgrid scale stabilized finite elements for low speed flows 

    Príncipe, Ricardo Javier (Date of defense: 2008-04-21)

    La descripción del flujo de fluidos involucra la solución de las ecuaciones de Navier-Stokes compresible, un problema muy complejo cuya estructura matemática no es del todo comprendida. Por lo tanto, mediante análisis ...

    Análisis matemático del equilibrio en estructuras de membrana con bordes rígidos y cables. Pasarelas: forma y pretensado 

    Viglialoro, Giuseppe (Date of defense: 2007-03-14)

    Las membranas son estructuras (sin rigidez a flexión) que conforman una superficie en el espacio, con espesor mínimo. Se aproximan a una superficie geométrica y trabajan sólo mediante esfuerzos de membrana (de tracción) y ...

    Numerical modelling of complex geomechanical problems 

    Pérez Foguet, Agustí (Date of defense: 2000-12-01)

    La tesis se centra en el desarrollo de técnicas numéricas específicas para la resolución de problemas de mecánica de sólidos, tomando como referencia aquellos que involucran geomateriales (suelos, rocas, materiales ...