Repositorio Institucional
El repositorio institucional recoge la producción científica del personal docente e investigador de la Universidad de Deusto. Su propósito es reunir, archivar, preservar y aumentar la visibilidad en acceso abierto de los resultados de investigación.
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Competitive improvement through integrated management of sales and operations
(MDPI, 2022-02-25) Apaolaza Pérez de Eulate, Unai; Orue Irasuegi, Aitor; Lizarralde Aiastui, Aitor; Oyarbide Zubillaga, Aitor
Several authors agree on the importance of integrating sales and operations (S & OP) when it comes to improving the management of organisations. Thus, the relationship between S & OP can be critical from a competitive point of view, and therefore strategic. However, most of the literature on this topic focuses on the field of repetitive manufacturing. Consequently, this work aims to enhance the scarce literature related to S & OP in organisations that produce make-to-order (MTO). The present study is an analysis of cases of two industrial companies managed according to the theory of constraints. In both cases, the relationship between sales and operations was initially poor. Their approaches were mainly founded on their experience and intuition, as well as on simple data. The development of a new approach, integrating S & OP, has demonstrated the potential advantages of integrated management. As a result, we have identified some aspects of interest from a managerial perspective. Furthermore, we consider the findings of this study to be relevant to improving the competitiveness of this kind of organisation
Understanding the role of diversity in ensemble-based AutoML methods for classification tasks
(Institute of Electrical and Electronics Engineers Inc., 2025-04-17) Osei, Salomey; Masegosa, Andrés R.; Masegosa Arredondo, Antonio David
Ensemble-based Automated Machine Learning (AutoML) methods have gained prominence for their ability to combine diverse machine learning models, achieving superior generalization performance. Despite their empirical success, the underlying mechanisms driving this performance, particularly the role of model diversity, are not yet adequately understood. This study uses novel theoretical frameworks related to the role of diversity in ensembles, which were recently proposed, to shed light on this issue. In this work, we focus on AutoML methods for classification tasks. We use AUTO-SKLEARN (a widely used AutoML ensemble-based method) as a basis. More specifically, we examine how individual model diversity and performance evolves across the four key phases of AUTO-SKLEARN (base-learners, meta-learning, Bayesian Optimization (BO), and Caruana Ensemble). We also examine how they contribute to the diversity and performance of the final ensemble produced by the AutoML method. Using datasets from the AutoML benchmark, we empirically validate these insights by analyzing error rates and diversity measures across the mentioned phases. Our findings highlight the trade-off between individual model accuracy and ensemble diversity, showing that phases like BO improve the mean error rate of classifiers by nearly 50% percent but reduce their mean diversity by 20%. However, the Caruana phase increases the diversity by a 50% compared to the BO phase, allowing better generalization despite the higher mean error rate of the selected individual models (48% higher than BO). This work provides theoretical and empirical evidence that diversity is critical to the success of ensemble-based AutoML methods and a deeper understanding of diversity’s impact on generalization performance and the role of the different AutoML phases. These findings can contribute to advance the development of more robust and theoretically grounded AutoML frameworks
Are investments in material corporate social responsibility issues a key driver of financial performance?
(John Wiley & Sons Australia, Ltd, 2022-01-29) Badía Fraile, Guillermo
; Gómez-Bezares Pascual, Fernando; Ferruz Agudo, Luis
In this study, we address a lesser-studied aspect of corporate social responsibility (CSR): distinguishing between investments in material versus immaterial CSR issues. The financial performance of stock portfolios formed according to material and general CSR issues is examined over the period 2007 to 2018 in the European Union and the United States. We find that materiality is relevant to finding the best and worst firms both in terms of CSR and financial performance, more significantly in the EU than in the US market. However, general CSR scores, including material and immaterial issues, do not discriminate the best firms
The mental health of university students: a social ecology perspective
(Multidisciplinary Digital Publishing Institute (MDPI), 2025-04-21) Segú Odriozola, Mabel
University students increasingly encounter significant mental health challenges as they navigate a pivotal period of personal and academic transition. Heightened by academic demands, financial insecurity, social isolation, and cultural expectations, these pressures can profoundly affect their emotional well-being. In response to this growing concern, a qualitative phenomenological study was undertaken to explore the subjective experiences of university students regarding their mental health. Guided by a socioecological framework, the research examined the complex interplay of individual, interpersonal, institutional, and societal factors shaping students’ perceptions and lived realities of mental well-being. The study utilized a phenomenological design and included 56 students from eight degree programs. The data collection methods included semi-structured interviews, reflective diaries, focus groups, ecological mapping, and ethnographic observation. The findings revealed that complex interactions between personal, social, institutional, and structural factors significantly influence students’ mental well-being. The research identified strategies students use to maintain or improve mental health, along with barriers and facilitators they encounter in the university context. The results emphasize the need for universities to adopt comprehensive, student-centered interventions, such as peer mentorship and mutual support programs, supported by updated institutional policies. These measures aim to create inclusive, adaptive, and less stressful environments, providing a model for other universities seeking to address similar challenges
Educación técnico profesional y cosmovisión Mapuche: fuente de inspiración para los desafíos de Chile en el siglo XXI
(Universidad Metropolitana de Ciencias de la Educación, Departamento de Formación Pedagógica, 2023) Cerna Cáceres, Rita Amelia; Yániz Álvarez de Eulate, Concepción
Los objetivos de este artículo son conocer y analizar las brechas y los principales desafíos que enfrenta la Educación Técnico Profesional (ESTP) chilena en este siglo y a partir de ello proponer acciones y estrategias que aporten mejoras al actual sistema educativo Técnico Profesional (ETP).Un segundo objetivo es identificar diferentes aspectos del modelo de enseñanza Mapuche y de su sabiduría ancestral que puedan aportar a la ETP y relacionarlos con la actual ETP y proponer mejoras que permitan enfrentar los desafíos de Chile en esta materia. Para lograr dichos objetivos, el estudio se ha desarrollado en cuatro partes. Primero se realiza una descripción general del sistema educativo chileno y de la educación superior técnico profesional considerando, sus fortalezas, brechas y desafíos desde diferentes perspectivas. En segundo lugar, se analizan los principales conceptos que sustentan la cosmovisión del pueblo Mapuche, enfatizando el sistema de valores, el proceso de enseñanza-aprendizaje, las estrategias educativas e identificando los actores que cumplen el rol de profesor; en tercer lugar, se identifican aquellas prácticas educativas del pueblo mapuche que pudiesen contribuir y transferirse a la educación superior técnico profesional y finalmente, se relacionan los aspectos más relevantes del modelo educativo mapuche y se proponen mejoraras al actual sistema de la ESTP chilena