Universitat Politècnica de Catalunya: Recent submissions
Now showing items 661-680 of 5606
Static and dynamic global stiffness analysis for automotive pre-design
In order to be worldwide competitive, the automotive industry is constantly challenged to produce higher quality vehicles in the shortest time possible and with the minimum costs of production. Most of the problems with ...
Una àlgebra informacional per al disseny lògic de sistemes d'informació
Es plantegen cinc problemes: 1. Modelació d'estructures d’informació, 2. Definició d'un cert nombre de meta-regles, 3. Modelació de regles particulars, 4. Definició de conjunts d’informació, 5. Definició de processos. ...
Contributions to the design of energy harvesting systems for autonomous sensors in low power marine applications
Oceanographic sensor platforms provide biological and meteorological data to help understand changes in marine environment and help to preserve it. Lagrangian drifters are autonomous passive floating platforms used in ...
Smart hardware designs for probabilistically-analyzable processor architectures
Future Critical Real-Time Embedded Systems (CRTES), like those is planes, cars or trains, require more and more guaranteed performance in order to satisfy the increasing performance demands of advanced complex software ...
Development of a machine learning based methodology for bridge health monitoring
In recent years the scientific community has been developing new techniques in structural health monitoring (SHM) to identify the damages in civil structures specially in bridges. The bridge health monitoring (BHM) systems ...
Size bounds for algebraic and semialgebraic proof systems
This thesis concerns the proof complexity of algebraic and semialgebraic proof systems Polynomial Calculus, Sums-of-Squares and Sherali-Adams. The most studied complexity measure for these systems is the degree of ...
Control of power converter in modern power systems
Power system is undergoing an unpreceded paradigm shift: from centralized to distributed generation. As the renewable-based generations and battery storage systems are increasingly displacing conventional generations, it ...
Estimació de l’esforç per a la realització de pressupostos en la producció d’aplicacions multimèdia de formació semipresencial (blended learning)
Aquesta tesi s'emmarca en l'estimació de l'esforç per al desenvolupament de projectes multimèdia de formació semipresencial. En la producció multimèdia, és necessari poder fer una previsió tant de calendari com de pressupost ...
Further into the infrared with quantum dot photodetectors
In the infrared, photodetectors are the key components in a wide-variety of applications such as thermal imaging, remote sensing, spectroscopy with newer technologies added to the list such as LiDaR and deep tissue imaging. ...
Spatiotemporal organisation of protein nanoclusters in adhesion complexes
The main goal of this thesis was to contribute to the understanding of the nanoscale lateral organisation of key proteins in adhesion complexes. For this, we exploited single molecule localisation-based super-resolution ...
Virtually synchronous power plant control
During the last century, the electrical energy infrastructures have been governed by synchronous generators, producing electrical energy to the vast majority of the population worldwide. However, power systems are no longer ...
Photodetectors based on graphene pn-junctions for mid-infrared and terahertz range
Long wavelength light contains the infrared and terahertz (THz) spetral range of the spectrum. This wavelength range spans approximately from 1 µm to 1 mm. Several applications can be explored in this spectral range such ...
Inhomogeneity and disorder in ultrafast phase transitions
In the recent decades, there has been a surge of interest in the wide array of emergent phenomena found in strongly correlated materials. Understanding the inner workings of this type of systems is a major challenge due ...
Versatile nonlinear frequency conversion sources in the near- and mid-infrared
Tunable laser sources in different spectral regions are of interest for a variety of applications including spectroscopy, trace gas sensing, medical diagnostics, LIDAR and material processing. Existing lasers have limited ...
Active control of noise transmitted from barriers
Active noise cancellation is a unique approach that helps passive noise control in reducing sound levels at low frequencies; nevertheless, successful use of active noise cancellation necessitates performing numerous and ...
Animal welfare in Europe and Iran: policy perspective and society
Intensive animal production systems are compromising current animal welfare standards. Societies' growing concerns regarding how animals are raised have resulted in continuous policy reforms and regulations that have banned ...
Organització espacial i temporal de la pluja a l'àrea metropolitana de Barcelona
In order to avoid the catastrophes caused by intense or even moderately intense, rainfall episodes, it is essential to have as exhaustive a knowledge as possible of the behaviour of the same. We have a source of information ...
Corona discharges from grounded rods and 337/777 nm emissions of laboratory long sparks
This thesis presents an investigation on the signatures of corona discharges from grounded rods under thunderstorms and in the laboratory, with optical detections in the 337/777 nm wavelengths for high voltage sparks. This ...
Evaluating the impact of urban mobility policies on the air quality levels of Barcelona by means of an integrated modelling system
Persistent high levels of NO2 have severe health effects on population. These are often found in large urban conurbations with high vehicle densities. In Barcelona, with one of the highest vehicle densities in Europe, the ...
Supernovas, constelaciones y nebulosas : algunas singularidades del turismo urbano en Barcelona
Tourist attractions are an essential part of urban tourism. It is often thought that attractions are comparable to each other and that their impacts can be limited as if cities could manage their tourist flows as theme ...
