Now showing items 148-167 of 345

    Gender bias in natural language processing 

    Basta, Christine Raouf Saad (Date of defense: 2022-10-14)

    (English) Gender bias is a dangerous form of social bias impacting an essential group of people. The effect of gender bias is propagated to our data, causing the accuracy of the predictions in models to be different depending ...

    Generalized consistent estimation in arbitrarily high dimensional signal processing 

    Rubio Molina-Prados, Francisco E. (Date of defense: 2008-06-13)

    La teoría del procesado estadístico de la señal halla un amplio abanico de aplicaciones en los campos de las comunicaciones de datos, así como también en el procesado con agrupaciones de sensores. Ciertamente, un gran ...

    Geosynchronous synthetic aperture radar for Earth continuous observation missions 

    Ruiz Rodon, Josep (Date of defense: 2014-11-20)

    This thesis belongs to the field of remote sensing, particularly Synthetic Aperture Radar (SAR) systems from the space. These systems acquire the signals along the orbital track of one or more satellites where the transmitter ...

    GMPLS-based provisioning of ethernet connections over WSON with quality of service 

    Bukva, Anica (Date of defense: 2012-12-10)

    The rapid growth of the data traffic, caused by the ever-growing number of Internet users and the services requiring huge bandwidth (e.g., videoconferences, IPTV, etc.) show that the existing transport network infrastructure ...

    GNSS array-based acquisition: theory and implementation 

    Arribas Lázaro, Javier (Date of defense: 2012-06-28)

    This Dissertation addresses the signal acquisition problem using antenna arrays in the general framework of Global Navigation Satellite Systems (GNSS) receivers. The term GNSS classi es those navigation systems based on a ...

    GNSS reflectometry for land remote sensing applications 

    Egido Egido, Alejandro (Date of defense: 2013-07-05)

    Soil moisture and vegetation biomass are two essential parameters from a scienti c and economical point of view. On one hand, they are key for the understanding of the hydrological and carbon cycle. On the other hand, soil ...

    GNSS Signal processing and spatial diversity exploitation 

    García Molina, José Antonio (Date of defense: 2020-02-14)

    Global Navigation Satellite Systems (GNSS) signals are broadly used for positioning, navigation and timing (PNT) in many different applications and use cases, Athough different PNT technologies are available, GNSS is ...

    GNSS-R as a source of opportunity for remote sensing of the cryosphere 

    Fabra Cervellera, Francisco (Date of defense: 2013-05-13)

    This work evaluates the potential use of signals from the Global Navigation Satellite Systems (GNSS) that scatter off the Earth surface for the retrieval of geophysical information from the cryosphere. For this purpose, ...

    Graph convolutional neural networks for 3D data analysis 

    Mosella Montoro, Albert (Date of defense: 2023-02-22)

    (English) Deep Learning allows the extraction of complex features directly from raw input data, eliminating the need for hand-crafted features from the classical Machine Learning pipeline. This new paradigm brought a boost ...

    Graph-based techniques for compression and reconstruction of sparse sources 

    Ramírez Jávega, Francisco (Date of defense: 2016-01-20)

    The main goal of this thesis is to develop lossless compression schemes for analog and binary sources. All the considered compression schemes have as common feature that the encoder can be represented by a graph, so they ...

    Grapheme-to-phoneme conversion in the era of globalization 

    Polyàkova, Tatyana V. (Date of defense: 2015-03-13)

    This thesis focuses on the phonetic transcription in the framework of text-to-speech conversion, especially on improving adaptability, reliability and multilingual support in the phonetic module. The language is constantly ...

    Ground moving target indication with synthetic aperture radars for maritime surveillance 

    Makhoul Varona, Eduardo (Date of defense: 2015-03-26)

    The explosive growth of shipping traffic all over the World, with around three quarters of the total trade goods and crude oil transported by sea, has raised newly emerging concerns (economical, ecological, social and ...

    Ground plane booster antenna technology for wireless handheld devices 

    Andújar Linares, Aurora (Date of defense: 2013-10-04)

    This thesis is framed in the field of mobile communications and more particularly in handset antennas. The wireless industry is constantly growing, which entails challenging handset antenna specifications. Handset antennas ...

    Hierarchical information representation and efficient classification of gene expression microarray data 

    Bosio, Mattia (Date of defense: 2014-06-27)

    In the field of computational biology, microarryas are used to measure the activity of thousands of genes at once and create a global picture of cellular function. Microarrays allow scientists to analyze expression of many ...

    Hierarchical region based processing of images and video sequences: application to filtering, segmentation and information retrieval 

    Garrido Ostermann, Luís (Date of defense: 2002-06-14)

    Este trabajo estudia la utilidad de representaciones jerárquicas basadas en regiones para el procesado de imagen y de secuencias de vídeo. Las representaciones basadas en regiones ofrecen una forma de realizar un primer ...

    High-resolution deformation measurement using "Persistent Scatterer Interferometry" 

    Devanthéry Arasa, Núria (Date of defense: 2014-10-31)

    Persistent Scatterer Interferometry (PSI) is a group of advanced differential interferometric SAR techniques that are used to measure and monitor terrain deformation. Different PSI techniques have been proposed in the last ...

    High-resolution space-borne and ground-based SAR persistent scatterer interferometry for landslide monitoring 

    Iglesias González, Rubén (Date of defense: 2015-12-04)

    Every year, with the onset of spring rains and snow melting, landslides represent one of the major threats to human life and infrastructures in natural environments. In this context, different surveying techniques, such ...

    Higher-order statistics applications in image sequence processing 

    Sayrol Clols, Elisa (Date of defense: 1994-10-27)

    Aqueta tesi tracta dues aplicacions dels estadístics d'ordre superior al tractament d'imatges.En primer lloc, es proposa l'ús de mètodes basats en estadístics d'ordre superior per a larestauració d'imatges. Primerament, ...

    Human body analysis using depth data 

    Suau Cuadros, Xavier (Date of defense: 2013-12-04)

    Human body analysis is one of the broadest areas within the computer vision field. Researchers have put a strong effort in the human body analysis area, specially over the last decade, due to the technological improvements ...

    Hyperspectral image representation and processing with binary partition trees 

    Valero Valbuena, Silvia (Date of defense: 2012-12-09)

    The optimal exploitation of the information provided by hyperspectral images requires the development of advanced image processing tools. Therefore, under the title Hyperspectral image representation and Processing with ...