Programa de Doctorat en Tecnologies de la Informació i les Comunicacions: Recent submissions

Now showing items 341-360 of 394

Three-dimensional statistical shape models for multimodal cardiac image analysis 

Tobón Gómez, Catalina (Date of defense: 2011-06-30)

Las enfermedades cardiovasculares (ECVs) son la principal causa de mortalidad en el mundo Occidental. El interés de prevenir y tratar las ECVs ha desencadenado un rápido desarrollo de los sistemas de adquisición de ...

An ID-based mutually authenticated edge-to-edge security architecture for bridged provider networks to secure layer-2 communications 

Ferdous Wahid, Khan (Date of defense: 2011-05-26)

IEEE standardized a Layer-2 security, named Media Access Control security (MACsec), for interoperability. It provides link-based security through hop-by-hop operation. The link-constrained security of MACsec eliminates the ...

Situated, perceptual, emotive and cognitive music systems: a psychologically grounded approach to interactive music composition 

Le Groux, Sylvain (Date of defense: 2011-05-19)

This thesis introduces a novel situated interactive composition system called the SMuSe (for Situated Music Server) that is grounded on principles of modern cognitive science, provides perceptual control of sound synthesis ...

Study of the theoretical bounds and practical limits of time synchronization protocols using an Ethernet FPGA platform 

Nicolau Jené, Carles (Date of defense: 2011-02-07)

The goal of synchronization is to align/synchronize the time and frequency scales of all nodes within a network. In industrial applications, synchronization enables simultaneous triggering of distributed events and ...

Musical expectation modelling from audio : a causal mid-level approach to predictive representation and learning of spectro-temporal events 

Hazan, Amaury (Date of defense: 2010-07-16)

We develop in this thesis a computational model of music expectation, which may be one of the most important aspects in music listening. Many phenomenons related to music listening such as preference, surprise or emo- tions ...

Morphological and statistical techniques for the analysis of 3D images 

Meinhardt Llopis, Enric (Date of defense: 2011-03-03)

Aquesta tesi proposa una estructura de dades per emmagatzemar imatges tridimensionals. L'estructura da dades té forma d'arbre i codifica les components connexes dels conjunts de nivell de la imatge. Aquesta estructura ...

Large scale image retrieval base on user generated content 

Olivares Ríos, Ximena (Date of defense: 2011-03-02)

Los sistemas online para compartir fotos proporcionan una valiosa fuente de contenidos generado por el usuario (UGC). La mayor a de los sistemas de re- cuperaci on de im agenes Web utilizan las anotaciones textuales ...

A low power listening with wake up after transmissions MAC protocol for WSNs 

Cano Bastidas, Cristina (Date of defense: 2011-03-04)

In the last few years Wireless Sensor Networks (WSNs) have become an interesting field of research mainly due to the challenges and constraints of their design and the broad range of potential applications they can provide. ...

Irregularly sampled image resortation and interpolation 

Facciolo Furlan, Gabriele (Date of defense: 2011-03-03)

The generation of urban digital elevation models from satellite images using stereo reconstruction techniques poses several challenges due to its precision requirements. In this thesis we study three problems related ...

Identification of versions of the same musical composition by processing audio descriptions 

Serrà Julià, Joan (Date of defense: 2011-02-23)

This work focuses on the automatic identification of musical piece versions (alternate renditions of the same musical composition like cover songs, live recordings, remixes, etc.). In particular, we propose two core ...

Characterization of information and causality measures for the study of neuronal data 

Chicharro Raventós, Daniel (Date of defense: 2011-04-07)

We study two methods of data analysis which are common tools for the analysis of neuronal data. In particular, we examine how causal interactions between brain regions can be investigated using time series reflecting the ...

Visual Exploration of Web Spaces 

Pascual Cid, Victor (Date of defense: 2010-12-20)

El gran volumen de datos que las técnicas de minería Web generan sobre espacios Web puede llegar a ser muy difícil de entender, provocando la necesidad de desarrollar nuevas técnicas que permitan generar conocimiento ...

New Heuristics for Planning with Action Costs 

Keyder, Emil Ragip (Date of defense: 2010-12-17)

Classical planning is the problem of nding a sequence of actions that take an agent from an initial state to a desired goal situation, assuming deter- ministic outcomes for actions and perfect information. Satis cing ...

Generic Neuromorphic Principles of Cognition and Attention for Ants, Humans and Real-world Artefacts: a Comparative Computational Approach 

Mathews, Zenon (Date of defense: 2011-01-12)

Es considera que la cognició biològica fa servir mecanismes com la predicció, l'anticipació i l'atenció per resoldre tasques complexes. S'ha suggerit que aquests mecanismes es materialitzen en els mamífers a través ...

Methods for face detection and adaptive face recognition 

Pavani, Sri-Kaushik (Date of defense: 2010-07-21)

The focus of this thesis is on facial biometrics; specifically in the problems of face detection and face recognition. Despite intensive research over the last 20 years, the technology is not foolproof, which is why we do ...

Virtual Reality based stroke neurorehabilitation: Development and Assessment of the Rehabilitation Gaming System 

Da Silva Cameirao, Mónica (Date of defense: 2010-10-06)

Donat el nivell d'incidència i impacte de l'ictus, hi ha la necessitat de trobar mètodes de rehabilitació més automatitzats que els actuals. Un candidat prometedor és la Realitat Virtual, on múltiples sistemes ja han estat ...

Time-domain numerical methods in room acoustics simulations 

Spa Carvajal, Carlos (Date of defense: 2009-11-20)

L'acústica de sales s'encarrega de l'estudi del comportament de les ones sonores en espais tancats.La informació acústica de qualsevol entorn, coneguda com la resposta impulsional, pot ser expressada en termes del camp ...

Information processing in the cortex: the relevance of coherent oscillations for neuronal communication 

Buehlmann, Andrés (Date of defense: 2010-07-20)

Les oscil·lacions d'activitat neuronal són un fenomen omnipresent a l'escorça cerebral. La funció d'aquestes oscil·lacions, però, no està clara. ¿Són només un epifenomen de les elevades taxes de descàrrega de potencials ...

Translation-based approaches to Conformant Planning 

Palacios Verdes, Héctor Luis (Date of defense: 2009-12-03)

Conformant planning is the problem of finding a sequence of actions for achieving a goal in the presence of uncertainty in the initial state and state transitions. While few practical problems are purely conformant, ...

A cross-layer mechanism for QoS improvements in VoIP over multi-rate WLAN networks 

Sfairopoulou, Anna (Date of defense: 2008-07-28)

In IEEE 802.11 WLANs, Link Adaptation mechanisms, which choose the transmission rate of each node, provoke unexpected and random variations on the effective channel capacity. When these changes are towards lower bitrates, ...