Now showing items 3043-3062 of 3499

    Succinct arguments: efficiency, assumptions and trade-offs 

    Zacharakis, Alexandros (Date of defense: 2022-10-10)

    Succinct non-interactive arguments (snarks) are cryptographic constructions that allow a prover to convince a verifier about the validity of a statement regarding some computation. We consider these objects from the ...

    Suicidal thoughts and behaviours in adolescents and young adults : disentangling the role of gender and sexual orientation 

    Miranda Mendizabal, Andrea (Date of defense: 2020-03-06)

    Suicide is the second leading cause of death among 15- to 29-year-olds. Male youths have higher risk for suicide compared to females, whereas females are at greater risk for suicidal ideation and suicide attempts. Mental ...

    Super-resolution imaging uncovers key temporal changes in chromatin structure and pluripotent gene reactivation in single reprogramming cells 

    Martinez Sarmiento, Jose Angel (Date of defense: 2023-05-04)

    Elucidating the mechanism of somatic cell reprogramming has been hampered by the limitations of iPSC systems to uncover the correctly reprogramming cells. Here, by using the highly efficient heterokaryon system we dissected ...

    Supervised Identification of the User Intent of Web Search Queries 

    González-Caro, Cristina (Date of defense: 2011-09-27)

    As the Web continues to increase both in size and complexity, Web search is a ubiquitous service that allows users to find all kind of information, resources, and activities. However, as the Web evolves so do the needs of ...

    Supporting teachers as designers with community and learning analytics : a framework, technology, and case studies 

    Michos, Konstantinos (Date of defense: 2019-03-26)

    The notion of teachers as designers of learning environments has emerged with the increasing use of Information and Communication Technologies (ICT) in Education. Research in Learning Design (LD) studies how to support ...

    Surveillance of non-fatal suicidal behaviour in Catalonia (Spain) through regional-based health registers 

    Puértolas Gracia, Beatriz (Date of defense: 2025-05-19)

    Antecedentes La conducta suicida es un problema complejo cuyo abordaje desafía a las sociedades y los sistemas gubernamentales. El presente estudio tiene como objetivos: estimar la incidencia de la conducta suicida en ...

    Symmetries in constraint satisfaction: Weisfeiler-Leman invariance and promise problems 

    Butti, Silvia (Date of defense: 2022-10-20)

    This thesis focuses on the complexity of the fixed-template Constraint Satisfaction Problem (CSP) and its variants. Our contributions are two-fold. On the one hand, we study how closure of the space of CSP instances under ...

    Synaptic transcriptomic changes sensitive to pharmacological approaches in fragile X syndrome: from mouse to human 

    Reyes Ramírez, Lucía de los (Date of defense: 2024-11-26)

    Fragile X syndrome (FXS), the most common monogenic cause of intellectual disability and autism, is characterized by impairment in cognitive function and synaptic plasticity. Several preclinical studies in animal models ...

    Synthesis of fatty acid derivatives of catechol compounds that exhibit negative modulation of food intake and antioxidant properties 

    Almeida Cotrim, Bruno (Date of defense: 2011-01-10)

    Obesity constitutes a problem whose manifestations have consequences in almost every field of the medicine and nowadays there is a lack of pharmacological therapy alternatives for its long term treatment. Lipidic compounds ...

    Synthetic biology for microbiome-based genetic domestication of the skin and the sea 

    Nevot Sánchez, Guillermo (Date of defense: 2024-10-17)

    Microorganisms exhibit remarkable adaptability and represent a vast genetic resource. Synthetic biology aims to leverage this diversity for sustainability and medicine. However, many microbes remain unexplored due to limited ...

    Synthetic biology in Mycoplasma pneumoniae 

    Paetzold, Bernhard (Date of defense: 2013-12-02)

    M. pneumoniae is one of the smallest self-replicating organisms. Many organism wide studies have been performed on M. pneumoniae and provide a wealth of information on the bacteria. However, the genetic tools to manipulate ...

    Synthetic view of retail spaces using camera and RFID sensors on a robot 

    Nur, Kamruddin Md. (Date of defense: 2016-01-11)

    In this thesis, two approaches of information presentation on indoor view have been presented using Radio-Frequency Identification (RFID) and camera sensors on a robot. The goal is to capture images of the indoor environment ...

    System-level performance of interference-aware spatial frequency reuse 

    Mungara, Ratheesh Kumar (Date of defense: 2016-12-01)

    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 ...

    Systematic and quantitative analysis of the early embryonic development of Caenorhabditis elegans 

    Krüger, Angela (Date of defense: 2012-12-14)

    The embryo of Caenorhabditis elegans is a model system in which development can be studied at single cell resolution. In this thesis I describe the use of a semi-automatic nuclear tracking algorithm to analyze cellular ...

    Systematic functional analyses of spliceosomal components reveal novel mechanisme of alternative splicing regulation 

    Tejedor Vaquero, Juan Ramón (Date of defense: 2014-06-11)

    Alternative splicing is an essential regulatory layer of gene expression that expands the coding potential of the genome in multicellular organisms. The spliceosome -the sophisticated machinery involved in intron removal- ...

    Systemic effects of chromosomal instability induced tumorigenesis : A role of JAK/STAT and cytokine secretion in coupling inflammation to maturation defects in Drosophila 

    Romão, Daniela (Date of defense: 2021-09-10)

    Alterations in developmental transitions are common among animals to compensate for growth disturbances. These variations are usually a consequence of altered steroidal hormone production resulting in puberty delays. ...

    Systemic risk in the banking sector: a network perspective 

    Hans, Christina (Date of defense: 2017-09-26)

    This thesis investigates various aspects of systemic risk in nancial networks. Chapter 1 explores the existence of a contagion channel to security returns given that banks are connected via overlapping portfolios. Making ...

    Systems and synthetic biology studies in Saccharomyces cerevisiae 

    Regot Rodríguez de Mier, Sergi (Date of defense: 2011-07-15)

    A fundamental property of living cells is the ability to sense and respond appropriately to changing environmental conditions. In budding yeast (Sacharomyces cerevisiae), changes in extracellular osmotic conditions are ...

    Systems biology perspectives on cellular senescence and inflammation 

    Sabalic, Alda (Date of defense: 2024-06-21)

    This thesis examines inflammation from the perspective of systems biology in two different situations: cellular senescence resulting from unresolved tissue damage and the acute immune response to the invasion of a pathogen, ...

    Tag recommendation using folksonomy information for online sound sharing platforms 

    Font Corbera, Frederic (Date of defense: 2015-06-11)

    Les plataformes d'intercanvi de recursos multimèdia contenen grans quantitats de contingut creat pels seus usuaris. Habitualment, aquest contingut no està ben anotat. En aquesta tesi, proposem mètodes per ajudar els ...