Programa de Doctorat en Tecnologies de la Informació i les Comunicacions: Recent submissions
Now showing items 221-240 of 394
Towards virtualized network functions as a service
Network Function Virtualization (NFV) is a promising technology that proposes to move packet processing from dedicated hardware middle-boxes to software running on commodity servers. As such, NFV brings the possibility of ...
Quality-efficiency trade-offs in machine learning applied to text processing
Nowadays, the amount of available digital documents is rapidly growing, expanding at a considerable rate and coming from a variety of sources. Sources of unstructured and semi-structured information include the World ...
Tone mapping based on natural image statistics and visual perception models
Les tècniques d'imatge d'alt rang dinàmic (HDR) potencialment permeten la captura i l'emmagatzematge de tota la informació de llum en una escena. No obstant això, els dispositius comuns de visualització són limitats en ...
Microcontrolled injectable stimulators based on electronic rectification of high frequency current bursts
Neuroprostheses based on dense networks of wireless microstimulators have been proposed in the past for restoring movement in paralysis patients. Yet existing implantable microstimulators are too bulky and invasive for ...
Towards a multimodal knowledge base for Indian art music: a case study with melodic intonation
This thesis is a result of our research efforts in building a multi-modal knowledgebase for the specific case of Carnatic music. Besides making use of metadata and symbolic notations, we process natural language text and ...
Spatio-temporal dynamics of human fMRI resting rate
Spontaneous brain activity, measured under the absence of any overt task, has been investigated under the label of “resting state” for about 20 years with rising interest. While it was known since the beginnings of modern ...
Computational analysis of audio recordings and music scores for the description and discovery of Ottoman-Turkish Makam music
This thesis addresses several shortcomings on the current state of the art methodologies in music information retrieval (MIR). In particular, it proposes several computational approaches to automatically analyze and describe ...
Image similarity for registration and manifold learning: application to brain analysis
The aim of this thesis is to explore and develop measures for image comparison in two main areas of medical image analysis: image registration and manifold learning for population analysis. In particular, the main contributions ...
From viral marketing to social advertising: ad allocation under social influence
This thesis constitutes one of the first investigations that lie at the intersection of social influence propagation, viral marketing, and social advertising. The objective of this thesis is to take the algorithmic aspects ...
System-level performance of interference-aware spatial frequency reuse
Spatial frequency reuse is a long-established approach for enhancing the capacity of wireless systems through increased spectral efficiency (bits per second per unit bandwidth). The future 5th generation of wireless systems ...
Statistical modelling and resynthesis of environmental texture sounds
Environmental texture sounds are an integral, though often overlooked, part of our daily life. They constitute those elements of our sounding environment that we tend to perceive subconsciously but which we miss when they ...
A Data-driven bayesian approach to automatic rhythm analysis of indian art music
Las colecciones de música son cada vez mayores y más variadas, haciendo necesarias nuevas fórmulas para su organización automática. El análisis automático del ritmo tiene como fin la extracción de información rítmica de ...
Computational approaches for melodic description in indian art music corpora
Automatically describing contents of recorded music is crucial for interacting with large volumes of audio recordings, and for developing novel tools to facilitate music pedagogy. Melody is a fundamental facet in most music ...
Analysis of human mobility for architecture and urban studies
The goal of this dissertation is to provide insights into spatial analysis for architecture and urban studies through examining human mobility in the built environment based on large-scale datasets. Three studies are ...
Affine invariant image comparison and its applications
La comparación de imágenes es un ingrediente fundamental en muchos problemas de procesamiento de imagen y visión por computador. Esta tesis aborda el problema de la comparación de entornos locales en imágenes, o patches, ...
Collision-free WLANs: from concepts to working protocols
Using a deterministic backoff after successful transmissions as a distributed contention mechanism for access to the channel can draw benefits from scheduled operation, like the elimination of simultaneous transmissions, ...
Prediction-based strategies for reducing data transmissions in the loT
Predictions about the evolution of the Internet of Things (IoT) in the next years are optimistic. The number of interconnected devices will continue to grow exponentially, as well as the amount of data that they report. Part ...
Development and evaluation of mapping strategies for the integration and joint analysis of multi-modal data of the heart
The development of novel technologies is allowing a complete description of the heart structure and function, including geometrical, myocardial tissue viability and electrical activation information. The joint analysis of ...
Geometrical room acoustics: ray based simulation for room acoustics
L’acústica de sales és la ciència encarregada d’estudiar la propagació del so en entorns tancats. La informació acústica de qualsevol entorn, coneguda com la resposta impulsional, s’expressa en termes del camp acústic ...
Digital musical instruments for people with physical disabilities
Playing a musical instrument has been shown to have a positive impact in the life of individuals in many different ways. Nevertheless, due to physical disabilities, some people are unable to play conventional musical ...
