Seminario 24/13 – Inga Helinad (University of Trondheim, NTNU): Common ownership and competition: Evidence from ultimate owners of private and public firms

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Abstract Firms under common ownership have incentives to internalize the consequences of their behavior on each other, potentially resulting in less competition. In this paper, I revisit the question of whether firms that have owners in common with their rivals compete less. I exploit unique data from Norway to document the economy-wide extent of common…

Seminario 24/12 – Javier de la Plaza Tierno y Melanie Caballero Pastor (MTP): Accesibilidad digital, la eterna olvidada

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En esta charla, Javier de la Plaza, responsable del área de UX&Accesibilidad de MTP, hablará de la importancia de que las aplicaciones web y app sean accesibles, la normativa vigente y cómo MTP trabaja con sus clientes para conseguirlo. Posteriormente Melanie Caballero, consultora especializada en accesibilidad digital, compartirá cómo se evalúa si una web es…

Seminario 24/04 – Volker Schoer (University of the Witwatersrand, South Africa): Discursive classroom interaction practices and student achievement in mathematics: Evidence using an International large-scale education dataset

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Improving the mathematics performance of school children is an objective for many policy makers around the world. It is obvious that mathematics teachers may have a key role to play in this process; however, robust examination of the teacher characteristics and practices of teachers that help to raise pupil mathematics achievement is relatively sparse, particularly…

Seminario 24/03 – Lourdes Molera y María Semitiel (U. Murcia): The contribution of university economics teaching to sustainability

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We study how university economics teaching addresses sustainability. The priority of the topic has been evidenced in publications calling for a critical analysis of university programmes (Bowles, Carlin, 2020; Ansari, Landin, 2023; Prillaman, 2023). We analyse how sustainability is addressed in introductory economics courses for the degrees in Economics, Business Administration, and Law at public…

Seminario 24/01 – Mariola Sánchez Romero (Universidad de Murcia): The Impacts of Airline Corporate Social Responsibility in the Air Transport Industry

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This paper investigates the implications of airline corporate social responsibility (CSR) uptake in the air transport industry. Then, we extend the analysis considering the impact of parallel airline alliances on CSR of airlines. The results suggest that airports play a crucial role in shaping the CSR practices of airlines and that this impact should be…

Seminario 23/14 – Luis Guardiola (Universidad de Alicante): Distribution of surplus generated through cooperation in supply chains with multiple suppliers and retailers

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Abstract The coordination of actions and the allocation of profit in supply chains under decentralized control play an important role in improving the profits of retailers and suppliers in the supply chain. We focus on supply chains under decentralized control in which noncompeting retailers can order from multiple suppliers to replenish their stocks. The goal…

Seminario 23/12 – José Manuel Cordero (Universidad de Extremadura): La consideración del contexto al analizar cambios en la productividad con modelos no paramétricos

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Las variables de contexto o ambientales suelen desempeñar un papel importante en la mayoría de los procesos productivos, condicionando en gran medida tanto la estimación de los niveles de eficiencia de las unidades evaluadas como posibles factores explicativos de las ineficiencias detectadas en la mayoría de los estudios empíricos. Sin embargo, cuando se analizan los…

Seminario 23/10 – Vanessa Guerrero (Universidad Carlos III) – On mathematical optimization approaches for constrained smoothing and feature selection in additive models.

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Abstract In an era when the decision-making process is often based on the analysis of complex and evolving data, it is crucial to have systems which allow us to incorporate human knowledge and provide valuable support to the decision maker. During this talk, statistical modelling and mathematical optimization paradigms merge to address the problems of,…

Seminario 23/02: José Manuel Rueda Cantuche (European Commission) – Measuring bilateral trade in terms of value added

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The increase in the fragmentation of production across countries and the subsequent growth in the trade of intermediate products have raised concerns about the suitability of conventional trade statistics to understand the economic consequences of trade. Several authors have attempted to disentangle value added content of trade. This technical report proposes a novel framework that…

Seminario 22/17: Germán López Buenache (Universidad de Murcia) Factor models for large and incomplete data sets with unknown group structure

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Most economic applications rely on a large number of time series, which typically have a remarkable clustering structure and they are available over different spans. To handle these databases, we combined the expectation–maximization (EM) algorithm outlined by Stock and Watson (JBES, 2002) and the estimation algorithm for large factor models with an unknown number of…