Recent Submissions

  • Weightable quasi-metrics related to fuzzy sets 

    Campión Arrastia, María Jesús Upna; García Catalán, Olga Raquel Upna; Induráin Eraso, Esteban Upna; Valero, Óscar (Hacettepe University (Turquía), 2018)   Artículo / Artikulua  OpenAccess
    We show that the definition of a fuzzy set is directly related to the existence of a weightable quasi-metric on a universe. This relationship is also explored in terms of functional equations coming either from the membership ...
  • Engineers and scientists as commercial agents of the Spanish nuclear programme 

    Torre Campo, Joseba de la Upna; Rubio Varas, María del Mar Upna; Sanz Lafuente, María Gloria Upna (Palgrave Macmillan, 2018)   Capítulo de libro / Liburuen kapitulua  OpenAccess
    We aim at analysing the role of engineers and scientists as agents of economic modernization in Spain, which at the time was an underdeveloped economy ruled by an authoritarian regime.
  • Siting (and mining) at the border Spain-Portugal nuclear transboundary issues 

    Rubio Varas, María del Mar Upna; Carvalho, Antoni; Torre Campo, Joseba de la Upna (Brepols, 2018)   Artículo / Artikulua  OpenAccess
    This article is focused on nuclear transboundary issues between Portugal and Spain, two countries that share a long history of nuclear collaboration and conflict of late, where national borders played a crucial role. The ...
  • Are football managers as efficient as coaches? Performance analysis with ex ante and ex post inputs in the Premier league 

    Zambom Ferraresi, Fabíola; Iraizoz Apezteguia, Belén Upna; Lera López, Fernando Upna (Routledge, 2019)   Artículo / Artikulua  OpenAccess
    There is a controversy on sport performance literature about what type of inputs might explain more deeply the performance of sports clubs (inputs specification controversy). By one side, several papers have analysed sports ...
  • The weak data on the water–energy nexus in Spain 

    Sesma Martín, Diego Upna; Rubio Varas, María del Mar Upna (IWA Publishing, 2019)   Artículo / Artikulua
    This paper focuses on the fact that the water–energy nexus remains an irrelevant issue on the energy policy agenda and on the priorities of the energy leaders in Spain. This is a striking fact given that this takes place ...
  • Revisiting quality television: audience perceptions 

    Bayo Moriones, José Alberto Upna; Etayo, C.; Sánchez-Tabernero, A. (Taylor & Francis, 2018)   Artículo / Artikulua
    This article analyzes what the audience understands by the concept of quality as applied to television channels. This research also examines the influence of the perceived quality of the different programs broadcasted by ...
  • Geometrical aggregation of finite fuzzy sets 

    Campión Arrastia, María Jesús Upna; García Catalán, Olga Raquel Upna; Indurain Eraso, Esteban; Lizasoain Iriso, María Inmaculada Upna; Raventós Pujol, Armajac; Valero, Óscar (Elsevier, 2018)   Artículo / Artikulua
    A fuzzy set on a finite universe can be interpreted as a vector in a unit cube. This gives rise to a huge variety of approaches in order to aggregate finite fuzzy sets or to modify a given one. We analyze several geometrical ...
  • The river’s light: water needs for thermoelectric power generation in the Ebro river basin, 1969–2015 

    Sesma Martín, Diego Upna (MDPI, 2019)   Artículo / Artikulua  OpenAccess
    Water is essential for almost all energy processes. This paper analyses the evolution of the cooling water needs of thermal power plants in the Ebro River basin, the largest contributor to the Spanish electricity grid, ...
  • What drives firm profitability? A multilevel approach to the Spanish agri-food sector 

    Zouaghi, Ferdaous Upna; Sánchez García, Mercedes Upna; Hirsch, Stefan (Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA), 2017)   Artículo / Artikulua  OpenAccess
    Strategic management research has demonstrated the importance of firm- and industry structure as drivers of firm profitability. However, less is known about how firms´ geographical locations affect profitability. Applying ...
  • Machines and energy. Energy capital ratios in Europe and Latin America 1875 - 1970' 

    Ducoing, Cristián; Gales, Ben; Hölsgens, Rick; Rubio Varas, María del Mar Upna (Taylor & Francis, 2018)   Artículo / Artikulua  OpenAccess
    The relationship between energy and capital is one of the most important aspects of modern economic growth. Machines need energy to produce all the goods we enjoy; energy would be far less useful for humankind in absence ...
  • Freshwater for cooling needs: a long-run approach to the nuclear water footprint in Spain 

    Sesma Martín, Diego Upna; Rubio Varas, María del Mar Upna (Elsevier, 2017)   Artículo / Artikulua  OpenAccess
    From the invention of the steam engine to the present, water has represented a significant input to the energy system, although this has been mostly ignored in the literature. In Spain, the most arid country in Europe, ...
  • Binary relations coming from solutions of functional equations: orderings and fuzzy subsets 

    Campión Arrastia, María Jesús Upna; Miguel Turullols, Laura de Upna; García Catalán, Olga Raquel Upna; Induráin Eraso, Esteban Upna; Abrísqueta Usaola, Francisco Javier Upna (World Scientific Publishing Company, 2017)   Artículo / Artikulua  OpenAccess
    We analyze the main properties of binary relations, defined on a nonempty set, that arise in a natural way when dealing with real-valued functions that satisfy certain classical functional equations on two variables. We ...
  • Assigning numerical scores to linguistic expressions 

    Campión Arrastia, María Jesús Upna; Falcó Díaz de Cerio, Edurne Upna; García Lapresta, José; Induráin Eraso, Esteban Upna (MDPI, 2017)   Artículo / Artikulua  OpenAccess
    In this paper, we study different methods of scoring linguistic expressions defined on a finite set, in the search for a linear order that ranks all those possible expressions. Among them, particular attention is paid to ...
  • La eficiencia energética, el efecto rebote y el crecimiento económico 

    Gómez Gómez-Plana, Antonio Upna; Arocena Garro, Pablo Upna; Peña Vidondo, Sofía Upna (Funcas, 2016)   Artículo / Artikulua  OpenAccess
    El trabajo revisa la relación entre la mejora de la eficiencia energética y el efecto rebote, así como el impacto que cabe anticipar sobre el consumo de energía y el crecimiento en la economía española.
  • Hidden power of trading activity: the FLB in tennis betting exchanges 

    Abinzano Guillén, María Isabel Upna; Muga Caperos, Luis Fernando Upna; Santamaría Aquilué, Rafael Upna (SAGE Publications, 2017)   Artículo / Artikulua  OpenAccess
    This paper examines the impact of trading activity on the Favourite-Longshot Bias (FLB) in tennis Betting Exchanges, using direct measures such as betting volume, average bet and standard deviation of the odds. According ...
  • Bad company. The indirect effect of differences in corporate governance in the pension plan industry 

    Abinzano Guillén, María Isabel Upna; Muga Caperos, Luis Fernando Upna; Santamaría Aquilué, Rafael Upna (Elsevier, 2017)   Artículo / Artikulua
    This paper analyses the role played by pension plan governance structure and how it impacts on plan fees and plan performance. The results clearly show that fees decrease significantly and performance improves when pension ...