Universitat Politècnica de Catalunya: Recent submissions
Now showing items 721-740 of 6070
Knowledge graph population from news streams
(English) Media producers publish large amounts of multimedia content online - both text, audio, image and video. As the online media market grows, the management and delivery of contents becomes a challenge. Semantic ...
Partial oxidation of methane into syngas at low temperature
(English) Syngas (a mixture of H2 and CO) is a versatile feedstock that can be used to produce a wide range of chemicals and fuels. For that reason, there is a great interest to optimize and explore new routes for its ...
Dos crecimientos en una ciudad. Dos ciudades en crecimiento
(English) After more than a century of existence, a district considered marginal in my city is tragically disappearing without a trace. This inspired me to examine its development and destruction. Busan, the first industrial ...
Deep learning based methodologies applied to industrial electromechanical systems monitoring
(English) In recent years, there has been significant attention from both the academic and industry sectors towards condition-based maintenance of rotating systems. This attention stems from the high relevance of these ...
Application of the vibration-assisted ball burnishing process on rotational symmetric parts to improve their fatigue strength and wear properties
(English) This thesis is an experimental investigation into the beneficial effects of the ultrasonic vibration-assisted ball burnishing process on the wear resistance and fatigue life-cycle enhancement of rotational symmetric ...
Structural behaviour and plastic design of carbon and stainless steel frames in fire
(English) This thesis investigates the response of carbon and stainless steel frames in fire, and proposes new and more efficient approaches for their design. The investigation is mainly focused on one bay frames comprised ...
Advanced hardware prefetching in virtual memory systems
(English) Despite groundbreaking technological innovations, the disparity between processor and memory speeds (known as Memory Wall) is still a major performance obstacle for modern systems. Hardware prefetching is a ...
On hybrid positioning using non-semantic image information
(English) Hybrid or multi-sensor-based positioning has been a research topic actively investigated in the last decade. In this context, the possibility of using information extracted from imaging sensors, for positioning, ...
Safety and adaptation in physical interaction control for robotic applications
(English) Although robotic platforms have been used for a wide range of purposes, recent advances in robot autonomy raise the opportunity of bringing them closer to humans. This implies that, under any circumstance, robots ...
Crutch gait patterns characterization through spatial and temporal parameters
(English) Crutches are widely used as assistive walking devices for a diverse population. They are often prescribed by clinicians/therapists to help offload the lower extremities for individuals with impairments. They can ...
Risk analysis of jet fires thermal effects
(English) The historical analysis performed has shown that jet fires have been the origin of a high number of domino effect accidents, both in the process industry and in the transportation of flammable fluids by pipelines ...
Light absorption and ergodicity in systems that transform light into other forms of energy
(English) To mitigate the present environmental crisis, caused by the excessive use of fossil fuels and associated release of carbon dioxide into the atmosphere, it is necessary to significantly reduce worldwide energy ...
Activación alcalina de residuos urbanos e industriales para la construcción de piezas prefabricadas
(English) A comprehensive evaluation of various industrial and urban by-products was conducted to determine their potential as precursors for alkali-activated materials (AAM) in Spain. Over 15 by-products were identified ...
Preclinical and clinical studies in oncology and endocrinology with diffuse light
(English) Near-infrared diffuse optical spectroscopy (DOS) techniques are capable of non-invasive measurement of microvascular hemodynamic parameters of deep tissues (>1 cm penetration). One important focus of the field ...
Análisis y propuestas en las operaciones para reducir los accidentes en buques de pesca artesanal españoles
(English) This thesis deals with the analysis of maritime accidents that occurred in fishing. The concept of maritime accident is important, since in this work we focus on these accidents and at the same time we move away ...
Quasi-perfect codes for the classical-quantum channel
(English) Quantum computers use the laws of quantum mechanics to do complex operations that classical computers can't solve. Quantum computers and other physical quantum systems require quantum information to be completely ...
Mathematical and computational modeling of flexoelectricity at fixed and moving interfaces, fracture surfaces and contact
(English) Flexoelectricity is a two-way coupling between strain gradient and polarisation or strain and polarization-gradient. Harnessing flexoelectricity as a functional property requires gradient engineering. This is a ...
Elliptic problems: regularity of stable solutions and a nonlocal Weierstrass extremal field theory
(English) This PhD dissertation deals with qualitative questions from the theory of elliptic Partial Differential Equations (PDE) and integro-differential equations. We are primarily interested in a distinguished class of ...
Heat transfer correlations for liquid metal flows under nuclear fusion conditions
(English) This thesis focuses on modeling the circulation of liquid metal through the breeding blanket channels of a tokamak fusion reactor. Apart from extracting the heat produced by the nuclear reactions of the plasma, ...
Modeling of container throughput in the European port system-analysis of container liner shipping networks
(English) This thesis records the evolution of the container throughput dynamics of the European port system from 2001-2020, analyses the dynamics of the European container port hierarchy with methodologies that have not ...
