Now showing items 89-99 of 99

    The analysis of interval-censored survival data. From a Nonparametric perspective to a nonparametric Bayesian approach 

    Calle, M. Luz (Date of defense: 1997-02-27)

    This work concerns some problems in the area of survival analysis that arise in real clinical or epidemiological studies. In particular, we approach the problem of estimating the survival function based on interval-censored ...

    The capacitated minimum spanning tree problem 

    Ruiz y Ruiz, Héctor Efraín (Date of defense: 2013-07-15)

    In this thesis we focus on the Capacitated Minimum Spanning Tree (CMST), an extension of the minimum spanning tree (MST) which considers a central or root vertex which receives and sends commodities (information, goods, ...

    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 ...

    The impact of effective factors on the Iranian electricity market in comparison to the Spanish electricity market 

    Nasrazadani, Hajar (Date of defense: 2016-03-01)

    Electricity market analysis is important to access strategic market information which can be further employed to pass energy policies. Due to the advantages of privatization, the Iranian government has taken certain ...

    The level of adoption of analytical tools 

    Barahona Torres, Igor (Date of defense: 2013-07-26)

    This PhD thesis is focused on disclosing features that might cause the increase in the use of analytical tools for better decision making. The theoretical part of this research is developed in two phases. At first, an ...

    The multi-depot VRP with vehicle interchanges 

    Rebillas Loredo, Victoria (Date of defense: 2018-12-19)

    In real-world logistic operations there are a lot of situations that can be exploited to get better operational strategies. It is important to study these new alternatives, because they can represent significant cost ...

    The Optimum Communication Spanning Tree Problem : properties, models and algorithms 

    Luna Mota, Carlos (Date of defense: 2016-02-01)

    For a given cost matrix and a given communication requirement matrix, the OCSTP is defined as finding a spanning tree that minimizes the operational cost of the network. OCST can be used to design of more efficient ...

    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 ...

    Utilització de mascles enters per a la producció de carn: avaluació sensorial i estudis de consumidors 

    Font i Furnols, Maria (Date of defense: 2000-06-20)

    L'olor sexual és un defecte sensorial que es dóna sobretot en la carn de porcs mascles enters i és deguda principalment a dues substàncies, l'androstenona i l'escatol. Els objectius principals d'aquest estudi són conèixer ...

    Valoración del riesgo en un modelo multinivel de suministro 

    Escalante Euán, Jesús Francisco (Date of defense: 2019-11-20)

    Risk management is a structured approach that incorporates uncertainty related to a threat, linked to a sequence of inherently human activities that include risk assessment, as well as other strategies for its mitigation. ...

    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 ...