Universitat Politècnica de Catalunya: Recent submissions
Now showing items 11-30 of 5896
Thermo-hydro-mechanical-chemical impacts of high-temperature aquifer thermal energy storage
(English) High Temperature Aquifer Thermal Energy Storage (HT-ATES) involves the injection and extraction of non-isothermal fluids into aquifers and triggers thermo-hydro-mechanical-chemical processes. These processes must ...
Integration of spatial and temporal patterns for ecological environment management in river-riparian system
(English) Rivers are important carriers of water resources and important components of ecosystems. In some areas, rivers have been artificially narrowed, riparian areas have been encroached upon, riparian resources have ...
Control of a grid of multiple AC and DC sub-systems interconnected with power converters
(English) High Voltage Direct Current (HVDC) offers clear advantages for long distance electrical transmission. This is why its implementation is rising in the interconnection of remote renewable energy and interconnection ...
Mitigation of compound events in Barcelona: urban water scarcity, flood risk and reduction of surface temperatures through WSUD
(English) Climate change is bringing with it situations where droughts coexist with periods of extreme rainfall in many regions of the world. Surface temperatures are increasing due to more frequent drought periods. In ...
Multicriteria methodology for assessing the sustainability of last-mile electrification programs
(English) The sustainability-driven global energy transition requires ensuring universal access to electricity, particularly in last-mile rural areas. Renewable-based energy access programs are pivotal for fostering ...
Improving the characterisation of anthropogenic NMVOC emissions for air quality modelling
(English) Non-methane volatile organic compounds (NMVOC) are a large group of organic compounds emitted from various anthropogenic and natural sources. They impact health, with species like benzene classified as human ...
Numerical techniques for the solution of thermal problems in the context of geophysical inversions
(English) The thermal structure of the Earth’s interior contains key information for the understanding of geodynamic processes, including plate tectonics, mantle convection, and the Earth’s overall thermal evolution. In ...
Design and implementation of low-interference, high efficiency, power electronic-based power system for PV applications
(English) Nowadays, high step-up converters with fast-dynamic response are demanded for many applications such as uninterruptible power supplies which are used to feed sensitive loads and DC-DC converters in grid connected ...
The checkerboard problem in finite volume methods: origins, solutions, and applications in magnetohydrodynamics
(English) This thesis addresses the checkerboard problem in collocated Finite Volume Methods (FVM) for incompressible flows, a numerical issue caused by the decoupling of neighboring control volumes when using a collocated ...
Spatial and temporal dynamics of larval fish communities in relation to environmental variability in the NW Mediterranean
(English) The early developmental stages of fish, eggs and larvae, found in the planktonic environment are subject to a high mortality. Thus, the study of larval survival has been a key issue in fisheries science since the ...
Exposiciones de arquitectura en Barcelona (1939-2019). Una colección
(English) The objective of this research is the study of the collection comprising the 950 architectural exhibitions held in Barcelona from the end of the Spanish Civil War to the present day. The study focuses on the ...
Design and prototyping of BEOL-embedded CMOS-MEMS accelerometers
(English) In the last two decades, MicroElectroMechanical Systems (MEMS) accelerometers and other inertial sensors have demonstrated a steady trend of miniaturization as well as price and power consumption reduction, while ...
Dynamic social patterns and information transfer in schooling fish
(English) Moving animal groups, such as flocks of birds, schools of fish, insect swarms, herds of mammals, and human crowds, exhibit intricate and highly coordinated behaviors. This thesis explores the underlying mechanisms ...
Compact phase imaging platform and its application to material science and manufacturing
(English) As the world moves towards increasingly miniaturized and complex technologies and devices, the need for imaging and metrology tools for precise material characterization and fabrication process control is rising ...
Contributions on dimensionality reduction and interpretable machine learning
(English) This thesis is divided into two parts. The first one is devoted to dimensionality reduction for large data sets, while the second one focuses on the field of Interpretable Machine Learning. Part of the material ...
Single rare earth ions for quantum computing nodes
(English) Despite decades of research, practical quantum computing and long-distance quantum communication remain elusive, hindered by significant challenges in current platforms. Single rare earth ions (SREI) in the solid ...
El orden desconcertado: tensión entre soporte físico y cuadrícula. Lógicas de ocupación en la ciudad de Córdoba, Argentina
(English) This research was born with the firm conviction that the growth and transformation of the city of Córdoba (Argentina) result from a unique dialogue and a complementary relationship between the physical support ...
Bio-inspired event-driven intelligence for motion estimation
(English) Motion estimation problems can range from low degrees of freedom (DOF) ego-motion estimation to complex, high-DOF motion, which includes dense pixel displacement or optical flow. This information is essential for ...
Nonlinear identification of underground seismic ground motions from surface record
(English) In earthquake engineering, generally only surface records are available; therefore, the motion of the lower soil layers must be estimated by depropagation analysis. Underground accelerograms are relevant in ...
Ionospheric scintillation in GNSS signals: a tool for earth observation
(English) This PhD thesis is intended to study ionospheric scintillation and its relationship with some of its sources, in particular the observed correlation between the ionospheric perturbation and the lithosphere. ...
