Now showing items 7754-7773 of 41734
Cufí Cabré, Clara (Date of defense: 2023-02-16)
Aquesta tesi tracta l’estudi de varietats invariants i òrbites periòdiques de sistemes dinàmics discrets i continus. La memòria està dividida en dues parts que es poden llegir de manera independent. La primera part (Capítols ...
Mongin, Sandrine (Date of defense: 2012-07-11)
La disponibilitat de metalls per part dels organismes no depèn únicament de la concentració total sinó també de l'especiació d'aquestes subtancias. En general, la disponibilitat de les espècies metàl•liques en medis naturals ...
Poveda Ruzafa, Alejandro (Date of defense: 2020-11-09)
The present dissertation is a contribution to the field of Mathematical Logic and, more particularly, to the subfield of Set Theory. Within Set theory, we are mainly concerned with the interactions between the largecardinal ...
Ciurana Adell, Marc (Date of defense: 2010-07-15)
Location techniques that satisfy the requirements of advanced Location-Based Services (LBS) in environments where GPS fails are needed, therefore accurate indoor positioning is becoming increasingly important. This PhD ...
Ochoa Aday, Leonardo (Date of defense: 2019-01-30)
The evolution of information and communication technologies (e.g. cloud computing, the Internet of Things (IoT) and 5G, among others) has enabled a large market of applications and network services for a massive number of ...
Abdulrahman Qasem, Al-Molegi (Date of defense: 2019-06-19)
A causa de l’estreta relació entre la vida de les persones i determinades ubicacions geogràfiques, les dades històriques sobre trajectòries d’una persona contenen informació valuosa que es pot utilitzar per descobrir els ...
Dorf, Tomasz (Date of defense: 2019-06-05)
Polymeric materials, which are suitable for high performance applications for example human implants are one of the most expensive available polymers. Standard injection micromoulding process, dedicated for mass production, ...
Klein, Nina (Date of defense: 2021-07-19)
Electroporation is a biophysical phenomenon in which cell membrane permeability to ions and molecules is increased when the cell is briefly exposed to high electric fields. Electroporation is the basis of multiple novel ...
Khalili, Hamzeh (Date of defense: 2018-09-20)
Ths thesis is a result of contributions to optimize and improve the network management systme and power consumption in Passive Optical Network (PON). Passive Optical Network elements such as Optical Line Terminal (OLT) and ...
Talone, Marco (Date of defense: 2010-11-22)
The European Space Agency's Soil Moisture and Ocean Salinity (SMOS) satellite was launched on November, 2, 2009 from the Russian cosmodrome of Plesetsk. Its objective is to globally and regularly collect measurements ...
Burriel Manzanares, Francesca (Date of defense: 2022-03-28)
Aquesta tesi doctoral explora els processos comunicatius entre les famílies i lescola des duna proposta empírica, sistemàtica i multimodal, pròpia dels estudis dopinió i actitud (Malinverni et al., 2016; Macià, 2019; ...
Salueña Berna, Xavier (Date of defense: 2013-09-30)
Normally, there are in use certain technologies of reduction of noise named passive, in the cancellation of the noise produced by industrial machinery. These technologies can be applied directly on the source (use of ...
Larco Barros, Ciro Mauricio (Date of defense: 2021-12-15)
In this research work, a non-linear technique called Minimum Controller Synthesis (MCS) is presented. This is a variant of the Model Reference Adaptive Control (MRAC), which has the main advantage of requiring very little ...
Velásquez Díaz, Milton (Date of defense: 2018-03-23)
En las magistraturas burocráticas, los jueces y magistrados tienen el doble rol de autoridades poderosas y funcionarios públicos. Esta especial característica tiene fuerte incidencia en los métodos de control. Enfocándonos ...
Feroldi, Diego Hernán (Date of defense: 2009-05-19)
Las pilas de combustible son muy ventajosas debido a su alta eficiencia en la conversión de energía y nula contaminación. En esta tesis se realiza un extenso estudio sobre el control y diseño de sistemas de generación ...
Unnikrishnan Raveendran, Nair (Date of defense: 2020-07-23)
The rate of integration of the renewable energy sources in modern grids have significantly increased in the last decade. These intermittent, non-dispatchable renewable sources, though environment friendly tend to be ...
Abu-Rmileh, Amjad Hisham Ahmad (Date of defense: 2013-12-09)
This thesis presents different control strategies, for the closed-loop artificial pancreas, which are based on Model Predictive Control (MPC) and Sliding Mode Control (SMC). Multiple MPC with linear models and gain scheduling, ...
Picas Prat, Ricard (Date of defense: 2016-12-22)
The integration of renewable energy sources in the electrical grid is reducing our dependence on fossil fuels. However, to ensure feasibility and reliability of distributed energy generation, more efficient and higher power ...
Gavriluţă, Cătălin (Date of defense: 2015-03-04)
For the past century, ac networks have been established as the standard technology for electrical power transmission system s. However, the de technology has not disappeared completely from this picture. The capability of ...
Schönleber, Kevin (Date of defense: 2018-02-09)
Remote offshore wind power plants (WPPs) are being linked through high-voltage de voltage-source converter (VSC-HVdc) transmission to the main grids. The current deployments of HVdc grid connections for offshore WPPs are ...