Now showing items 41-60 of 94

    Foundations of uncertainty management for text-based sentiment prediction 

    Hossayni, Sayyed Ali (Date of defense: 2018-07-27)

    Analyzing the sentiment of Social Networks users is an attractive task, well-covered by the Sentiment Analysis research communities. Alongside, predicting the rating/opinion of users in Social Networks or e-commerce platforms ...

    Gestión del conocimiento en la co-creación de material educativo con y para estudiantes con altas capacidades 

    Meneses Ortegón, Juan Pablo (Date of defense: 2023-06-20)

    The development of any process handles data. These data are generated from information that in turn generates knowledge. The ideal is that this knowledge provides the process with added value that allows it to improve, ...

    Gràfic de control T2 de Hotelling per a dades composicionals 

    Vives Mestres, Marina (Date of defense: 2014-11-28)

    Compositional data are defined as vectors of components that represent parts of a whole and contain relative information (e.g. %, ppm, mg/l...). CoDa are widely found in chemical, pharmaceutical and food industries among ...

    Hand-held 3D-scanner for large surface registration 

    Matabosch Geronès, Carles (Date of defense: 2007-06-26)

    L'objectiu d'aquesta tesi és l'estudi de les diferents tècniques per alinear vistes tridimensionals. Aquest estudi ens ha permès detectar els principals problemes de les tècniques existents, aprotant una solució novedosa ...

    High dynamic range content acquisition from multiple exposures 

    Ramírez Orozco, Raissel (Date of defense: 2016-01-29)

    The limited dynamic range of digital images can be extended by composing different exposures of the same scene to produce HDR images. This thesis is composed of an overview of the state of the art techniques and three ...

    Image blending techniques and their application in underwater mosaicing 

    Prados Gutiérrez, Ricard (Date of defense: 2013-05-02)

    The fusion of several images of the same scene into a single and larger composite is known as photo-mosaic. Unfortunately, the seams along image boundaries are often noticeable, due to photometrical and geometrical ...

    Image classification for a large number of object categories 

    Bosch Rué, Anna (Date of defense: 2007-09-25)

    L'increment de bases de dades que cada vegada contenen imatges més difícils i amb un nombre més elevat de categories, està forçant el desenvolupament de tècniques de representació d'imatges que siguin discriminatives quan ...

    Imaginación visual: nuevo paradigma en interfaces cerebro-máquina 

    Llorella Costa, Fabio Ricardo (Date of defense: 2023-06-01)

    This doctoral thesis focuses on the study of the use of visual imagery for the construction of brain-computer interfaces (BCI) non-invasive. Although the construction of brain-computer interfaces is already is a reality, ...

    Improvements in the ray tracing of implicit surfaces based on interval arithmetic 

    Flórez Díaz, Jorge Eliécer (Date of defense: 2008-12-10)

    Las superfícies implícitas son útiles en muchas áreasde los gráficos por ordenador. Una de sus principales ventajas es que pueden ser fácilmente usadas como primitivas para modelado. Aun asi, no son muy usadas porque su ...

    Information theory techniques for multimedia data classification and retrieval 

    Vila Duran, Marius (Date of defense: 2015-07-09)

    We are in the information age where most data is stored in digital format. Thus, the management of digital documents and videos requires the development of efficient techniques for automatic analysis. Among them, capturing ...

    Integration of knowledge-based, qualitative and numeric tools for real time dynamic systems supervision 

    Meléndez i Frigola, Joaquim (Date of defense: 1998-02-27)

    The proposal presented in this thesis is to provide designers of knowledge based supervisory systems of dynamic systems with a framework to facilitate their tasks avoiding interface problems among tools, data flow and ...

    Introspection on control-grounded capabilities. An agent inspired approach for control 

    Quintero Monroy, Christian G. (Date of defense: 2007-10-18)

    Introspecció sobre la dinàmica dels agents té un important impacte en decisions individuals i cooperatives en entorns multi-agent. Introspecció, una habilitat cognitiva provinent de la metàfora "agent", permet que els ...

    La transformació digital en el sector universitari i l'impacte en el model de negoci: abans, durant i després del xoc COVID-19 

    Rof Bertrans, Albert (Date of defense: 2022-03-03)

    This thesis explores the digital transformation (DT) phenomenon in the higher education sector, and its impact on the business model (BM) and in the learning value proposition. A qualitative research methodology based on ...

    Label space reduction in GMPLs and All-Optical Label Swapping networks 

    Solano Donado, Fernando (Date of defense: 2007-12-04)

    All-Optical Label Swapping (AOLS) es una tecnología clave para la implementación de nodos de conmutación completamente óptica de paquetes. Sin embargo, el costo de su desarrollo es proporcional al tamaño del espacio de ...

    Local model predictive control for navigation of a wheeled mobile robot using monocular information 

    Pacheco Valls, Lluís (Date of defense: 2009-11-30)

    Aquesta tesi està inspirada en els agents naturals per tal de planificar de manera dinàmica la navegació d'un robot diferencial de dues rodes. Les dades dels sistemes de percepció són integrades dins una graella d'ocupació ...

    Los sistemas de información en el sector hotelero: un modelo de éxito 

    Martínez Rodríguez, Joaquim (Date of defense: 2014-05-30)

    This thesis includes a review of how the information technology is used at present in the hotels, as well as the functionality expected from the hotels information systems. We compare these systems characteristics with ...

    L’adopció dels recursos tecnològics digitals en educació: factors facilitadors i factors limitadors 

    Codina Regàs, David (Date of defense: 2022-05-19)

    This research is based on the need and curiosity that, as a teacher who is interested in educational digital resources, I had often felt, specifically regarding the factors that affected its success in the implementation. In ...

    Medical imaging applied to teaching and meat science 

    Xiberta, Pau (Date of defense: 2018-05-25)

    Medical imaging has greatly progressed to become an essential technology in current clinical processes. However, advances in diagnostic imaging have not been applied to the same extent to other fields such as education and ...

    Medical imaging techniques for the analysis and measurement of composite materials 

    Julià i Juanola, Adrià (Date of defense: 2022-11-11)

    The purpose of this thesis is the research and development of methods, algorithms and tools for the analysis of composite materials. In order to improve their properties, one must employ specific techniques in order to ...

    Methodology to obtain the user's Human Values Scale from Smart User Models 

    Guzmán Obando, Javier (Date of defense: 2008-06-16)

    En años recientes,la Inteligencia Artificial ha contribuido a resolver problemas encontrados en el desempeño de las tareas de unidades informáticas, tanto si las computadoras están distribuidas para interactuar entre ellas ...