Now showing items 1-20 of 98

    MIPing complex multi-action management planning: models, algorithms, and variants 

    Salgado Rojas, José (Date of defense: 2023-12-20)

    (English) We are living in an era where the complexity of environmental challenges is unprecedented. Biodiversity loss, habitat degradation, and climate change are interconnected issues requiring a comprehensive and ...

    The dynamics of bike sharing systems: advancements in analytics tools 

    Cortez Ordóñez, Alexandra Piedad (Date of defense: 2023-11-23)

    (English) Nowadays, Bicycle Sharing Systems (BSS) have become a popular and widespread transportation system across the world thanks to their multiple environmental and health benefits, and its successful support for urban ...

    Metodologia d'identificació de seqüències Web per a business intelligence basada en tècniques de mineria de dades 

    Palomino Gayete, Arturo (Date of defense: 2023-10-03)

    (English) The Internet has changed the way companies sell and users shop. Nowadays, having an online presence is an opportunity, while not doing so is a competitive disadvantage, and companies strive to appear as the first ...

    Understanding investor reaction to sustainability news in energy companies: fossil vs renewable vs nuclear, tone effects, and COVID-19 impacts through a multi-study approach using event study metholology 

    Barroso del Toro, Alberto (Date of defense: 2023-07-06)

    (English) This thesis provides empirical evidence, with an unprecedented sample size, that sustainability news moves the stock market, particularly positive news related to fossil fuels. The findings confirm that there is ...

    Demand aggregator optimal strategies: from the bidding to the execution 

    Barbero, Mattia (Date of defense: 2023-07-17)

    (English) Europe is at the beginning of an energy revolution. The old energy paradigm where centralized power plants provide energy to passive consumers is ending. Distributed renewable energy resources and electrification ...

    Relevant statistical applications to real-world data science 

    Serra Burriel, Feliu (Date of defense: 2022-04-19)

    The work presented in this dissertation is a compendium of articles based on three main applications of advanced statistical methodologies on real-world complex datasets. The first application concerns wildfire effects ...

    Mathematical programming models to design and analyse efficient and robust raiway freight transport networks 

    Rosell Camps, Francisca (Date of defense: 2022-11-10)

    (English) Searching to achieve an ambitious reduction in greenhouse gas emissions, the European Union has set as a goal a modal shift in freight transport of 30\% by rail or waterborne for the near future. The increasing ...

    Measuring review report quality in health research : development and validation of ARCADIA 

    Superchi, Cecilia (Date of defense: 2021-01-21)

    Editorial peer review is the gateway to scientific publication. It was established to ensure that research papers were vetted by independent experts before they are published. Despite the importance of this process, its ...

    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 ...

    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 ...

    Long-term impact of an editorial intervention to improve paper transparency and reproducibility 

    Vilaró Pacheco, Marta (Date of defense: 2021-07-15)

    This PhD thesis is concerned with evaluating the long-term effects of interventions in the editorial peer review process of a biomedical journal. The growing need to increase the value of research and avoid waste motivates ...

    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 ...

    Proposing some innovative study design features to regulatory agencies (EMA and FDA) in bioequivalence trials : Reference Scaled Average Bioequivalence, and Two-Stage Adaptive Designs 

    Molins Lleonart, Eduard (Date of defense: 2021-05-28)

    In applications for generic medicinal products the concept of bioequivalence is fundamental. Two medicinal products, i.e. a test and a reference drugs containing the same active substance are considered bioequivalent if ...

    Constant effect in randomized clinical trials with quantitative outcome : a methodological review 

    Cortés Martínez, Jordi (Date of defense: 2021-05-27)

    The past decade has seen continuous growth in so-called precision medicine, due especially to great advances in the genetics. While applying it presently goes unquestioned in certain fields like oncology, it is more ...

    From RNA to histological images: linking the transcriptome with human phenotypes through statistical learning 

    Muñoz Aguirre, Manuel (Date of defense: 2021-04-07)

    Genomic datasets are fundamental to broaden our understanding of human biology in the context of health and disease. However, the high-dimensional nature of gene expression and other molecular traits poses a challenge when ...

    Ingeniería kansei en el campo del diseño : una aproximación desde la ingeniería estadística aplicada a la percepción de los materiales 

    Abella Garcia, Ainoa (Date of defense: 2021-01-19)

    The objective of the current doctoral thesis is the theoretical and experimental application of Kansei engineering in the field of design. Kansei engineering is a method that aims to develop or improve products, services ...

    Zipf extensions and their applications for modeling the degree sequences of real networks 

    Duarte-López, Ariel (Date of defense: 2021-02-05)

    The Zipf distribution, also known as discrete Pareto distribution, attracts considerable attention because it helps describe skewed data from many natural as well as man-made systems. Under the Zipf distribution, the ...

    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 ...

    Solving large-scale two-stage stochastic optimization problems by specialized interior point method 

    de la Lama Zubiran, Paula (Date of defense: 2021-01-13)

    Two-stage stochastic optimization models give rise to very large linear problems (LP). Several approaches have been devised for efficiently solving them, among which are interior-point methods (IPM). However, using IPM, ...

    Intracavity spatial filtering in broad area semiconductor laser 

    Gawali, Sandeep Babu (Date of defense: 2020-12-17)

    Semiconductor lasers in high-power regime typically manifest a poor beam quality due to its asymmetric beam divergence and its large beam quality factor (M2). The emission along one of the transverse directions (slow axis) ...