Now showing items 1-20 of 331

    3D audio technologies : applications to sound capture, post-production and listener perception 

    Cengarle, Giulio (Date of defense: 2012-11-29)

    La llegada del sonido 3D está imponiendo cambios en varias etapas del flujo de trabajo, desde los sistemas de captación hasta las metodologías de postproducción y las configuraciones de altavoces. Esta tesis trata varios ...

    3D reconstruction for plastic surgery simulation based on statistical shape models 

    Ruiz Fernández, Guillermo (Date of defense: 2018-12-12)

    This thesis has been accomplished in Crisalix in collaboration with the Universitat Pompeu Fabra within the program of Doctorats Industrials. Crisalix has the mission of enhancing the communication between professionals ...

    3D reconstruction of the proximal femur and lumbar vertebrae from dual-energy x-ray absorptiometry for osteoporotic risk assessment 

    Whitmarsh, Tristan (Date of defense: 2012-09-25)

    In this thesis a method was developed to reconstruct both the 3D shape and the BMD distribution of bone structures from Dual-energy X-ray Absorptiometry (DXA) images. The method incorporates a statistical model built from ...

    3D subject-specific shape and density modeling of the lumbar spine from 2D DXA images for osteoporosis assessment 

    López Picazo, Mirella (Date of defense: 2019-03-19)

    Osteoporosis is the most common bone disease, with a significant morbidity and mortality caused by the increase of bone fragility and susceptibility to fracture. Dual Energy X-ray Absorptiometry (DXA) is the gold standard ...

    A Comprehensive study of arithmetic circuits and elliptic curves for efficient and scalable zero-knowledge proof systems 

    Bellés Muñoz, Marta (Date of defense: 2023-10-10)

    In recent years, zero-knowledge proofs have come to play a crucial role in distributed systems where there is no trust between the parties involved. Most popular proof systems are for the NP-complete language of arithmetic ...

    A computational approach to rhythm description - Audio features for the computation of rhythm periodicity functions and their use in tempo induction and music content processing 

    Gouyon, Fabien (Date of defense: 2005-11-30)

    Aquesta dissertació tracta del ritme musical. Més exactamente, tracta de programes informàtics que extreuen automàticament descripcions rítmiques a partir de senyals musicals d'àudio.<br/>Presentem nous algorismes per a ...

    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, ...

    A self-organizing management platform for wireless sensor networks 

    Cao Minh, Trang (Date of defense: 2014-09-25)

    Through advances in sensor, networking, semiconductor and energy storage technologies, Wireless Sensor Networks (WSNs) are increasingly being deployed in many important applications to enable users to access information ...

    A statistical dynamic cardiac atlas for the virtual physiological human: construction and application 

    Hoogendoorn, Corné (Date of defense: 2014-02-26)

    This thesis is centered on the construction of a cardiac atlas to serve as a common reference frame in the Virtual Physiological Human (VPH). The construction covers the entire construction pipeline, starting from a set ...

    Affine invariant image comparison and its applications 

    Fedorov, Vadim (Date of defense: 2016-10-11)

    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, ...

    Algebraic techniques for universal succinct arguments 

    Zapico Barrionuevo, Victoria Arantxa (Date of defense: 2022-10-13)

    In this thesis, we make theoretical and practical contributions to the design of succinct arguments with universal setups in the pairing-based setting. We first introduce a new primitive, Checkable Subspace Sampling (CSS) ...

    Algorithmic bias in graph-based recommender systems 

    Fabbri, Francesco (Date of defense: 2022-10-25)

    Recommender Systems represent a key instrument to convey consumption of contents available on the Web. They enhance the engagement among the users and the online platforms through algorithmic personalization. Injecting ...

    Algorithmic fairness in practice: data, models and interactions 

    Solans Noguero, David (Date of defense: 2022-09-14)

    The fast-growing adoption of technologies based on Machine Learning (ML), in addition to the large scale at which they operate, makes them a potential source of systematic discrimination against disadvantaged social ...

    Algorithms and representations for supporting online music creation with large-scale audio databases 

    Roma Trepat, Gerard (Date of defense: 2015-06-05)

    The rapid adoption of Internet and web technologies has created an opportunity for making music collaboratively by sharing information online. However, current applications for online music making do not take advantage of ...

    An Alternative view of ICTs use by older people in human-computer interaction: similarities, digital content creation and perceived well-being 

    Möller Ferreira, Susan (Date of defense: 2015-09-04)

    Within Human-Computer Interaction, older people (60+) are often characterized as a heterogeneous group of consumers of digital content that use ICTs in a limited way due to age-related changes in functional abilities. By ...

    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 ...

    Analysis of ensemble expressive performance in string quartets: a statistical and machine learning approach 

    Marchini, Marco (Date of defense: 2014-11-27)

    Computational approaches for modeling expressive music performance have produced systems that emulate human expression, but few steps have been taken in the domain of ensemble performance. Polyphonic expression and ...

    Analysis of human mobility for architecture and urban studies 

    Yoshimura, Yuji (Date of defense: 2016-11-25)

    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 ...

    Analysis of interaction design and evaluation methods in full-body interaction for special needs: collaborative virtual environments for improving socialization in children with autism 

    Crowell, Ciera (Date of defense: 2019-09-20)

    This thesis is focused on the specific properties and evaluation of full-body interaction design of multi-user mixed reality environments to aid in intervention strategies for children with autism, to improve their ...

    Applicability of wireless injectable microstimulators based on volume conduction for high density neuromuscular stimulation 

    Eladly, Ahmed Fayed (Date of defense: 2021-04-28)

    This thesis was conducted within the framework of the eAXON project that is aimed at developing injectable wireless sub-millimetric single-channel addressable microstimulators based on volume conduction called eAXONs ...