Now showing items 73-92 of 126

    Large-scale CFD and micro-particles simulations in a large human airways under sniff condition and drug delivery application 

    Calmet, Hadrien (Date of defense: 2020-11-10)

    As we inhale, the air drawn through our nose undergoes successive accelerations and decelerations as it is turned, split, and recombined before splitting again at the end of the trachea as it enters the bronchi. Fully ...

    Light beam propagation in complex crystals 

    Kumar, Nikhil P. (Date of defense: 2017-07-13)

    Recent advancement in Photonics have brought about a new era of miniaturisation. Along came a need for technology to allow the manipulation of light at the micrometer scale, with precise control over beam propagation. The ...

    Light management in non-Hermitian systems 

    Ahmed, Waqas Waseem (Date of defense: 2018-04-17)

    The quest for new artificial structures and materials uncovers novel new light-matter interactions, and intriguing physical phenomena. Since the late 80’s purely dielectric materials have been structured, at the wavelength-scale, ...

    Liquid crystals in woodpile photonic crystals : fabrication, numerical calculation and measurement 

    Ho, Chih-Hua (Date of defense: 2016-03-14)

    Both experimental and numerical studies on Liquid Crystal (LC) infiltrated woodpile Photonic Crystal (PhC) are implemented in this thesis. The most well-known optical phenomenon of PhC is photonic bandgap (PBG). It is ...

    Local ordering and dynamics of plastic crystals 

    Henao Aristizábal, Andrés (Date of defense: 2016-09-23)

    Many materials of scientific interest show a disordered phase, with their molecules presenting positional disorder, orientational disorder or both. Processes of interest to life also occur in these kind of phases as it is ...

    Machine learning for aircraft trajectory prediction: a solution for pre-tactical air traffic flow management 

    Mateos Villar, Manuel (Date of defense: 2022-11-08)

    (English) The goal of air traffic flow and capacity management (ATFCM) is to ensure that airport and airspace capacity meet traffic demand while optimising traffic flows to avoid exceeding the available capacity when it ...

    Machine learning methods for the characterization and classification of complex data 

    Amil Marletti, Pablo (Date of defense: 2020-02-11)

    This thesis work presents novel methods for the analysis and classification of medical images and, more generally, complex data. First, an unsupervised machine learning method is proposed to order anterior chamber OCT ...

    Mapping biophysics through enhanced Monte Carlo techniques 

    Cabeza de Vaca López, Israel (Date of defense: 2015-12-16)

    This thesis is focused on the study of molecular interactions at the atomistic detail and is divided into one introductory chapter and four chapters referencing different problems and methodological approaches. All of them ...

    Mathematical modelling to study infectious diseases: from understanding to prediction 

    Català Sabaté, Martí (Date of defense: 2021-10-14)

    Each year 10 million people die from communicable diseases. They are infectious diseases caused by agents transmitted between individuals. Nowadays, the two infectious diseases that have the greatest impact are tuberculosis ...

    Modelling emergent rhythmic activity in the cerebal cortex 

    Dornelles, Leonardo dalla Porta (Date of defense: 2022-10-07)

    The brain, a natural adaptive system, can generate a rich dynamic repertoire of spontaneous activity even in the absence of stimulation. The spatiotemporal pattern of this spontaneous activity is determined by the brain ...

    Modelling pathological effects in intracellular calcium dynamics leading to atrial fibrillation 

    Marchena Angos, Miquel (Date of defense: 2020-07-23)

    The heart beating is produced by the synchronization of the cardiac cells' contraction. A dysregulation in this mechanism may produce episodes of abnormal heart contraction. The origin of these abnormalities often lies at ...

    Models of stellar winds from X-ray bursts 

    Herrera, Yago (Date of defense: 2021-12-15)

    The study of stellar winds (SW) in the context of X-ray bursts (XRB) performed in this thesis has two main motivating issues. The first is whether or not the heavy elements produced from nucleosynthesis in XRBs can escape ...

    A Monte Carlo approach to statics and dynamics of quantum fluids 

    Ferré Porta, Guillem (Date of defense: 2017-09-16)

    The main objective of the thesis is to study static and/or dynamic properties of a set of quantum fluids by means of quantum Monte Carlo techniques, mainly using the path integral formalism to obtain results both at zero ...

    Multiapproach computational modelling of tuberculosis : understanding its epidemiological dynamics for improving its control in Nigeria 

    Ahmad, Nura Mohammad Rabiu (Date of defense: 2020-07-20)

    Tuberculosis (TB) is an infectious disease that is considered to be the biggest killer of mankind in the history of infectious diseases. There are still more than 10 million new TB cases every year and it causes more than ...

    Network-based ionospheric gradient monitoring to support ground based augmentation systems 

    Caamaño Albuerne, María (Date of defense: 2022-07-12)

    The Ground Based Augmentation System (GBAS) is a local-area, airport-based augmentation of Global Navigation Satellite Systems (GNSSs) that provides precision approach guidance for aircraft. It enhances GNSS performance ...

    Neuronal encoding and transmission of weak periodic signals 

    Masoliver Vila, Maria (Date of defense: 2020-02-20)

    Sensory neurons use sequences of electrical pulses (known as action potentials or spikes) to encode and transmit information of external temporal stimuli. Neural coding is the research field that studies the relationship ...

    Neutronics analysis and thermodynamics studies of several DEMO breeding blankets for the development of the AINA safety code 

    Fabbri, Marco (Date of defense: 2018-04-05)

    By 2050 the energy consumption is expected to increase considerably.The production might be mostly based on renewable energy mix driven by the nuclear fusion which could potentially deliver continuous, large-scale power ...

    Nonlinear optics at nanoscale: frequency conversion at interfaces 

    Rodríguez Suñé, Laura (Date of defense: 2023-06-19)

    (English) The use of semiconductors, metals, or ordinary dielectrics in the process of fabrication of nanodevices is at the front edge of nowadays technology. In the last decade an impressive technological progress has ...

    Nuevas aproximaciones al estudio de la dinámica de la relajación dieléctrica en ferroeléctricos ordinarios y relajadores 

    Levit Valenzuela, Rafael (Date of defense: 2019-12-10)

    Ferroelectric materials are endowed with fascinating functional properties from the technological point of view. Consequently, they have promoted the design of ferroelectric-based devices with applications in a vast range ...

    Observation and interpretation of type IIB supernova explosions 

    Morales Garoffolo, Antonia (Date of defense: 2016-03-08)

    Core-collapse supernovae (CC-SNe) explosions represent the final demise of massive stars. Among the various types, there is a group of relatively infrequent CC-SNe termed type IIb, which appear to be hybrids between normal ...