Now showing items 61-80 of 382

    Shaping transport infrastructure in Sub-Saharan Africa (1884-2020). The impact of decision-making on network efficiency and sustainability: the case of Cameroon 

    Oliete Josa, Sergio (Date of defense: 2023-07-05)

    (English) The objective of this research is to delve into the decision-making processes that shape the provision of transport infrastructure. To this end, it analyses the historical evolution of transport networks in ...

    Environmental impact accounting of organic agricultural production systems: advancing inventory and biodiversity modelling approaches in life cycle assessment 

    Montemayor, Erica Yvonne (Date of defense: 2022-11-24)

    (English) Agriculture not only contributes to more than a quarter of all global greenhouse gas emissions but is also the number one anthropogenic source of nitrogen emissions and a danger to nearly half of threatened ...

    Mechanical characterisation of masonry in existing structures by means of laboratory and in-situ experimental techniques 

    Cabané Cañas, Albert (Date of defense: 2023-05-17)

    (English) Masonry structures are among the most abundant construction typologies in the world, having been commonly built until the second half of the 20th century. The determination of the mechanical properties of these ...

    Methodology for seismic vulnerability assessment of existing masonry buildings in urban centres. Application to the Eixample district in Barcelona 

    Dimovska, Sara (Date of defense: 2023-05-26)

    (English) Unreinforced masonry buildings (URM), which prevail in many historic and urban centres, can be considered to be significantly vulnerable to seismic actions due to their peculiar constructive and structural features ...

    THM coupled behaviour of a deep poorly indurated argillaceous formation 

    Sau Valenzuela, Núria (Date of defense: 2021-11-19)

    (English) Deep geological disposal of heat-emitting and long-lived radioactive waste is the solution internationally accepted that offers the most viable and safest way to manage this kind of wastes. Accordingly, the ...

    Dinámicas socioecológicas de la producción de durazno bajo el sistema de agricultura familiar periurbana en El Jarillo, Venezuela 

    Silva Laya, Silvia Josefina (Date of defense: 2021-04-21)

    (English) The Jarillo, Venezuelan Mirandina parish, has had an intense agricultural development since the end of the 19th century, the peach occupies one of its main crops since the middle of the last century. They are ...

    Coupling shallow water models with three-dimensional models for the study of fluid-structure interaction problems using the particle finite element method 

    Maso Sotomayor, Miguel (Date of defense: 2022-09-29)

    (English) This thesis investigates numerical methods for the simulation of surface water flows, focusing on the interaction between the large scale and the local scale and its application to natural hazards. Several families ...

    Development of low-cost sensors for structural health monitoring applications 

    Komarizadehasl, Seyedmilad (Date of defense: 2022-10-27)

    (English) There is increasing interest in developing low-cost sensors for economical structural health monitoring of civil engineering infrastructures. In addition to their price, they have the additional benefit of being ...

    Conformal n-dimensional bisection for local refinement of unstructured simplicial meshes 

    Belda Ferrín, Guillem (Date of defense: 2022-10-28)

    [English] In n-dimensional adaptive applications, conformal simplicial meshes must be lo cally modified. One systematic local modification is to bisect the prescribed simplices while surrounding simplices are bisected ...

    Numerical modeling of geological carbon sequestration : enhanced dissolution in randomly heterogeneous media 

    Wang, Yufei (Date of defense: 2022-07-11)

    Geological Carbon Sequestration (GCS) plays a major role in mitigating the global warming due to the increasing concentration of CO2 in atmosphere. It is important to understand the GCS process to analyze and predict its ...

    Monitoring and analysis of soil-vegetation-atmosphere interactions at slope and catchment scale : Implications for mass-wasting in natural and man-made slopes 

    Oorthuis Gómez, Raül (Date of defense: 2022-07-19)

    Slope mass-wasting (SMW) due to shallow landslides or debris flows is one of the most important erosional processes in many mountainous regions together with surficial erosion by rainfall runoff. These erosive processes ...

    Estudio paleoclimático del afloramiento ecuatorial del Océano Pacífico durante los últimos 160.000 años a partir de biomarcadores moleculares 

    Quirós Collazos, Lucía (Date of defense: 2022-06-27)

    The present PhD thesis is focused on the paleoclimatic reconstruction of the Pacific Ocean equatorial upwelling conditions, east of the Galapagos Islands, over the last 160.000 years. This region is of great interest to ...

    Building information modeling for facility managers 

    Alavi, Hamidreza (Date of defense: 2022-10-11)

    A Decision Support System (DSS) can help facility managers to improve building performance, occupants’ comfort, and energy efficiency during the Operation and Maintenance (O&M) phase. These DSSs are normally data-intensive ...

    Dynamic large deformation modelling of soils including static liquefaction 

    Carluccio, Gaia di (Date of defense: 2021-11-30)

    Modelling geotechnical problems involving large deformation is a research field that arouses growing interest since it is fundamental for evaluating the risk and quantifying the magnitude of consequences. However, it is ...

    Vegetable Fiber Reinforced Calcium Aluminate Cement based composites for construction materials VFRCCs 

    Gorgani, Nourjemal (Date of defense: 2022-09-15)

    Vegetable Fiber Reinforced Cement Composite Materials (VFRCC) have emerged as a potential construction material, providing adequate load-bearing capacity and ductility for non-structural applications. VFRCC have good ...

    Hydro-mechanical behaviour of pellet/powder mixture of bentonite and impact of gas migration 

    Mesa Alcantara, Arisleidy (Date of defense: 2021-07-02)

    The hydro-mechanical behaviour of MX80 bentonite pellet-based mixture (80% high-density pellets in dry mass and crushed granular powder) has been explored in this thesis within the context of the French ‘Vertical Sealing ...

    Use of advanced analytics for health estimation and failure prediction in wind turbines 

    Beretta, Mattia (Date of defense: 2022-07-21)

    The energy sector has undergone drastic changes and critical revolutions in the last few decades. Renewable energy sources have grown significantly, now representing a sizeable share of the energy production mix. Wind ...

    Computational and experimental thermo-mechanics of metal additive manufacturing : stress, warpage, cracks and properties 

    Lu, Xufei (Date of defense: 2022-07-15)

    The objectives of this thesis are (i) to understand the thermal, metallurgical and mechanical behavior during AM, (ii) to shed light on the generation of residual stresses and the stress-induced deformations and cracks, ...

    Sustainability, durability and mechanical characterization of a new recycled textile-reinforced strain-hardening cementitious composite for building applications 

    Sadrolodabaee, Payam (Date of defense: 2022-07-11)

    Cementitious materials have one of the highest compressive strength-to-weight ratios compared to other construction materials. Nonetheless, both tensile strength capacity and toughness result to be an order of magnitude ...

    Comparison of the mesophilic, thermophilic and temperature-phased anaerobic digestion of sewage sludge 

    Lanko, Iryna (Date of defense: 2022-01-27)

    Anaerobic digestion (AD) is currently spread all over the world for sewage sludge stabilisation, volume reduction and green energy production. Its implementation contributes to turn a wastewater treatment plant (WWTP) into ...