New autonomous sensor system for the continous monitoring of the composting process from the inside 

    Rillo Moral, Francesc (Fecha de defensa: 2016-05-12)

    The composting process is Nature's way of recycling organic wastes with a good quality organic fertilizer as a result. This process, though, needs of a thoroughly monitoring of temperature and humidity for a good resulting ...

    New processing approaches for Cu2ZnSnSe4-based solar cells 

    López Mariño, Simón (Fecha de defensa: 2016-04-22)

    The present thesis focuses on the promising semiconductor material kesterite, Cu2ZnSn(S,Se)4, known as CZTS(e), which is used in the second generation of solar cells, generally known as thin film photovoltaics (PV). This ...

    Novel metal insulator metal capacitors based on electrosprayed colloidal nanoparticles 

    Véliz Noboa, Bremnen Marino (Fecha de defensa: 2020-01-30)

    This work develops a novel capacitor device based on the use of nanotechnology. The device starts from the exiting metal-insulator-metal (MIM) concept, but instead of a continuous insulator layer, dielectric nanoparticles ...

    Una nueva perspectiva del modelado y control de microrredes eléctricas y convertidores de potencia 

    Alfaro Aragón, Carlos Arturo (Fecha de defensa: 2022-06-28)

    (English) This doctoral thesis focuses on the modeling and control of electrical microgrids and triphasic converters. The starting points of this research work are based on previous work on modeling electrical microgrids ...

    Obtenció d'imatges de la distribució d'impedància elèctrica en el subsòl per a la detecció d'anomalies extenses. Aplicació a la detecció d'humitat i de contaminants 

    Jordana Barnils, Josep (Fecha de defensa: 1999-04-09)

    La conservació i protecció del medi ambient estan adquirint cada cop més importància. Un dels factors que influeixen més en la seva degradació és la contaminació. Aquesta tesi es centra en la contaminació del subsòl. com ...

    Obtención de imágenes de la distribución de impedancia eléctrica del subsuelo. Aplicación a la detección de objetos locales 

    Gasulla Forner, Manuel (Fecha de defensa: 1999-04-09)

    El objetivo de este trabajo es la obtención de imágenes de la distribución de impedancia eléctrica en el subsuelo a partir de medidas realizadas desde la superficie. El estudio se centra en la localización de objetos locales ...

    Obtención de micropotenciales cardíacos latido a latido por vía superficial 

    Fernández Chimeno, Mireya (Fecha de defensa: 1996-07-02)

    Para la detección no invasiva de la señal del haz de his latido a latido, es necesario que el nivel de ruido e interferencias presentes en el registro sea extremadamente bajo. El estudio del entorno de medida donde se ...

    On the automatic detection of otolith features for fish species identification and their age estimation 

    Sória Pérez, José A. (José Antonio) (Fecha de defensa: 2013-01-21)

    This thesis deals with the automatic detection of features in signals, either extracted from photographs or captured by means of electronic sensors, and its possible application in the detection of morphological structures ...

    On-chip adaptive power management for WPT-Enabled IoT 

    Abdelhameed, Mohamed Ahmed Saad (Fecha de defensa: 2018-06-13)

    Internet of Things (IoT), as broadband network connecting every physical objects, is becoming more widely available in various industrial, medical, home and automotive applications. In such network, the physical devices, ...

    Opportunities for radio frequency nanoelectronic integrated circuits using carbon-based technologies 

    Landauer, Gerhard Martin (Fecha de defensa: 2014-07-07)

    This thesis presents a body of work on the modeling of and performance predictions for carbon nanotube field-effect transistors (CNFET) and graphene field-effect transistors (GFET). While conventional silicon-based CMOS ...

    Optimization of a CSI inverter and DC/DC elevator with silicon carbide devices, for applications in electric traction systems 

    Fernández Palomeque, Efrén Esteban (Fecha de defensa: 2019-03-20)

    The applications of electric traction systems currently focus on developing technologies with greater energy efficiency and lower environmental impact. Manufacturers of hybrid and electric vehicles are looking for ways to ...

    Optoelectronic optimization of photocatalytic processes for wastewater treatment 

    Tapia Tlatelpa, Tecilli (Fecha de defensa: 2019-10-03)

    Water pollution is an alarming problem that endangers the health of all living beings. The textile industry is listed as one of the most contaminating industries, since in order to carry out its dyeing and finishing ...

    Planificación óptima de redes eléctricas en baja y media tensión y microrredes eléctricas inteligentes mediante algoritmos linealizados de optimización multicriterio 

    Barrenechea Gruber, Roberto Carlos (Fecha de defensa: 2019-01-11)

    In this work, a new algorithm for the multiobjective optimization of low and medium voltage electrical grids and microgrids is proposed. The originally nonlinear planning model is linearized using the economic current ...

    Proposal and development of a highly modular and scalable self-adaptive hardware architecture with parallel processing capability 

    Soto Vargas, Javier E. (Fecha de defensa: 2014-07-02)

    This dissertation describes a novel unconventional self-adaptive hardware architecture with capacity for parallel processing. For scalability issues, this bioinspired architecture is based on a regular array of homogeneous ...

    Prospects of voltage regulators for next generation computer microprocessors 

    López Julià, Toni (Fecha de defensa: 2010-06-18)

    Synchronous buck converter based multiphase architectures are evaluated to determine whether or not the most widespread voltage regulator topology can meet the power delivery requirements of next generation computer m ...

    Radiated transient interferences in digital communication systems 

    Pous Solà, Marc (Fecha de defensa: 2015-04-24)

    In the Electromagnetic Compatibility research area, an unsolved interference problem is the measurement and evaluation of the distortion produced by radiated transient disturbances on digital communication systems. This ...

    Regular cell design approach considering lithography-induced process variations 

    Gómez Fernández, Sergio (Fecha de defensa: 2014-10-17)

    The deployment delays for EUVL, forces IC design to continue using 193nm wavelength lithography with innovative and costly techniques in order to faithfully print sub-wavelength features and combat lithography induced ...

    Reliability-aware circuit design to mitigate impact of device defects and variability in emerging memristor-based applications 

    Escudero López, Manuel (Fecha de defensa: 2020-05-22)

    In the last decades, semiconductor industry has fostered a fast downscale in technology, propelling the large scale integration of CMOS-based systems. The benefits in miniaturization are numerous, highlighting faster ...

    Reliability-aware memory design using advanced reconfiguration mechanisms 

    Pouyan, Peyman (Fecha de defensa: 2015-11-16)

    Fast and Complex Data Memory systems has become a necessity in modern computational units in today's integrated circuits. These memory systems are integrated in form of large embedded memory for data manipulation and ...

    Scene segmentation using neuromorphic networks 

    Cosp Vilella, Jordi (Fecha de defensa: 2002-07-08)

    Els avanços en neurociència han portat el desenvolupament de models complexes de neurones artificials semblants a les seves contraparts biològiques. Aquests models han millorat la funcionalitat de les xarxes neuronals ...