Contribucions als agorismes de punt interior en mètodes iteratius per a sistemes d'equacions usant regularitzacions quadràtiques 

Cuesta Andrea, Jordi (Date of defense: 2009-09-29)

Els mètodes de punt interior per a programació lineal proporcionen algorismes de complexitat polinòmica, que els fa ser molt eficients en l’optimització a gran escala. Aquests algorismes utilitzen el mètode de Newton per ...

Contribució a l'estudi dels exponents de Lyapunov per a sistemes bilineals i a l'analisi de les bifurcacions en el convertidor boost controlat amb superficies de lliscamente i histèresi. 

Massana Hugas, Immaculada (Date of defense: 2006-10-31)

Després d'un capítol d'introducció (capítol 2) on es definieixen i s'expliquen les característiques i els fenòmens més importants dels sistemes dinàmics, aquest treball el podríem dividir bàsicament en dues parts. La primera ...

Contributions to the multivariate Analysis of Marine Environmental Monitoring 

Graffelman, Jan (Date of defense: 2000-09-12)

The thesis parts from the view that statistics starts with data, and starts by introducing the data sets studied: marine benthic species counts and chemical measurements made at a set of sites in the Norwegian Ekofisk oil ...

Contributions to the planning and analysis of factorial designs 

Xampeny Solaní, Rafael (Date of defense: 2018-06-20)

The thesis is structured in five articles. In the first article, two methods are compared to analyze the significance of the effects: the Lenth method and the one based on the estimation of the variance of the effects from ...

Data science in HIV : statistical approaches for therapeutic HIV vaccine data 

Alarcón Soto, Yovaninna (Date of defense: 2021-06-30)

The present dissertation contributes to Data Science in the Human lmmunodeficiency Virus (HIV) field, addressing specific issues related to the modelling of data coming from three different clinical trials based on ...

Data–driven Bayesian networks modelling to support decision–making : application to the context of Sustainable Development Goal 6 on water and sanitation 

Requejo Castro, David (Date of defense: 2021-07-13)

We live in a complexand interconnected world which permeates ditterent scales. sectors or decision problems. This fact is acknowledged by the United Nations 2030 Agenda for Sustainable Development, which underscores current ...

Deep learning architectures applied to wind time series multi-step forecasting 

Manero Font, Jaume (Date of defense: 2020-07-14)

Forecasting is a critical task for the integration of wind-generated energy into electricity grids. Numerical weather models applied to wind prediction, work with grid sizes too large to reproduce all the local features ...

Desarrollo de técnicas estadísticas basadas en computacion intensiva para el análisis de medidas repetidas 

Sánchez Espigares, Josep Anton (Date of defense: 2021-04-09)

This thesis includes contributions to statistical methodologies and practical applications in situations where data has been obtained as a result of repeated measures. The first block includes a first article where different ...

Descomposicions de grafs en arbres. 

López Masip, Susana-Clara (Date of defense: 2003-02-20)

Desenvolupament d'una metodologia per a l'establiment de tipologies microregionals: el cas de les comarques de Catalunya 

Gil Martín, Joan Carles (Date of defense: 1999-07-30)

Aquesta tesi s'emmarca dins l'àmbit de l'Economia Regional. Es pretén fer un estudi estadístic de les comarques de Catalunya amb un triple objectiu:<br/>- Estudiar les tipologies que es poden determinar a partir de la ...

Design of off-grid renewable energy community electrification projects : analysis of micro-scale resource variations and development of optimization methods 

Ranaboldo, Matteo (Date of defense: 2015-02-09)

Projects relying on renewable energies are a suitable and sustainable option to electrify isolated communities autonomously. These systems produce electricity in a clean and environmentally respectful way and their cost ...

Designing smart ITS services through innovative data analysis modeling 

Arjona Martínez, Jamie (Date of defense: 2021-02-11)

Nowadays, one of the most important problems in urban areas concerns traffic congestion. This, in turn, has an impact on the economy, nature, human health, city architecture, and many other facets of life. Part of the ...

Detección de isquemia de miocardio y estudio de la respuesta autónoma asociada mediante procesamiento de la señal de EGG 

Magrans Nicieza, Rudys (Date of defense: 2016-11-29)

Myocardial ischemia, consequence of coronary artery disease, is the major health problem leading to myocardial infarction (MI), arrhythmias and death. Autonomic nervous system (ANS) regulates several physiological functions ...

Dynamic OD matrix estimation exploiting ICT traffic measurements 

Ros Roca, Xavier (Date of defense: 2021-10-01)

During the last decades, urban mobility has become the main concern for city councils and transportation operators. The main problem is the traffic congestion that easily appears in urban networks, producing negative ...

Dynamics of optically levitated nanoparticles in high vacuum 

Gieseler, Jan (Date of defense: 2014-02-03)

Nanotechnology was named one of the key enabling technologies by the European Commission and its tremendous impact was envisioned early by 20th century physicist R.Feynman in his now oft-quoted talk "Plenty of Room at the ...

Economic evaluation in health research: cohort simultation and applications 

Pérez Álvarez, Nuria (Date of defense: 2014-07-23)

Currently, resources that may be spent in health care are limited so it is necessary to rationalize their consumption and prioritise their allocation to the options with higher health outcome and economic sustainability. ...

Errores en la búsqueda de condiciones robustas. Metodologías para evitarlos. 

Pozueta Fernández, Maria Lourdes (Date of defense: 2001-12-10)

El problema de encontrar condiciones robustas al efecto de factores no controlados es un tema que interesa enormemente a las empresas ya que es una característica que demanda el mercado. Existen básicamente dos métodos ...

Estudi de les inèrcies estructurals en anàlisis de correspondències. Aportacions per a una millora de les anàlisis 

Daunis i Estadella, Josep (Date of defense: 2005-02-11)

La memòria d'aquesta tesi doctoral s'estructura en un primer capítol on es descriuen els objectius de la tesi i l'organització del treball de recerca. Després, el Capítol 2: Anàlisis factorials de dades es destina a presentar ...

Exact and heuristic methods for statistical tabular data protection 

Baena Mirabete, Daniel (Date of defense: 2017-07-03)

One of the main purposes of National Statistical Agencies (NSAs) is to provide citizens or researchers with a large amount of trustful and high quality statistical information. NSAs must guarantee that no confidential ...

Exploiting nonlinearity and noise in optical tweezers and semiconductor lasers : from resonant damping to stochastic logic gates and extreme pulses 

Perrone, Sandro (Date of defense: 2014-02-07)

This thesis is focused on the study of stochastic and nonlinear dynamics in optical systems. First, we study experimentally the dynamics of a Brownian nanometer particle in an optical trap subjected to an external forcing. ...