Universitat Politècnica de Catalunya: Recent submissions
Now showing items 201-220 of 6079
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. ...
Crioconcentración en bloque para jugo de granada (Punica granatum L.)
(English) One of the food industry's pressing global challenges is ensuring food security for a rapidly growing population. The enormous problems of water scarcity, climate change and high energy costs are barriers to ...
Contributions to RFI detection, mitigation, and excision for GNSS receivers and spaceborne microwave radiometers
(English) Radio Frequency Interference (RFI) poses significant challenges to remote sensing systems, particularly affecting Global Navigation Satellite System-Reflectometry (GNSS-R) and microwave radiometry. This thesis ...
Improving real-time guarantees of cache coherence and advanced interconnections in real-time systems
(English) The dissertation, research on enhancing timing predictability and performance for Critical Real-Time Embedded Systems (CRTES), focusing on Multi-Processor Systems on Chip (MPSoCs). CRTES are essential in critical ...
Advancing solver performance in large-scale computational fluid dynamics: generalizing the linelet preconditioner for the pressure correction equation
(English) This thesis presents the Global Linelet Preconditioner (GLP), a preconditioning strategy designed to overcome these limitations and improve scalability in extreme-scale Computational Fluid Dynamics (CFD) applications. ...
Continuous variable quantum communications: technologies and security
(English) With this Thesis, we will focus on diverse technologies as well as techniques relevant for the development of secure communication systems based on Quantum Mechanics. This theoretical analysis involves the ...
On the study of delamination and failure of composite materials under static and cyclic loads
(English) Composite materials, particularly fiber-reinforced polymers and fiber metal laminates have gained significant attention in industries such as aerospace, automotive, and marine engineering due to their high ...
Comportamiento de estructuras de hormigón pretensado con armaduras pretesas de polímeros reforzados con fibras (FRP).
(English) The effect of corrosion on reinforcement and its impact on the service life reduction of existing reinforced and prestressed concrete infrastructures has led to the search for alternatives to conventional steel ...
