Now showing items 357-376 of 784

    • Gas engine heat pump system: Experimental facility and thermal evaluation for 5 different units 

      Sánchez Ramos, José; Guerrero Delgado, M. Carmen; Álvarez Domínguez, Servando; Molina Féliz, José Luis; Cabeza, Luisa F. (Elsevier, 2019)
      Gas Engine Heat Pump requires simplified characterization models that allow evaluating its economic and energy impacts. These simplified solutions can be implemented in complex simulation algorithms for different commercial ...
    • Generación Z y Fortnite: Lo que engancha a los más pequeños 

      Gil Iranzo, Rosa María; Arnedo Moreno, Joan; González, Carina S.; Paderewski, Patricia; Domenech, Marga; Lleras de Frutos, Maria (Asociación Interacción Persona-Ordenador (AIPO), 2020)
      Las formas de interacción de los usuarios de la Generación Z suponen un nuevo desafío para los diseñadores de software. El diseño de videojuegos y aplicaciones que “enganchen” puede fomentar la aparición de ciertos patrones ...
    • Generating hard SAT/CSP instances using expander graphs 

      Ansótegui Gil, Carlos José; Béjar Torres, Ramón; Fernàndez Camon, César; Mateu Piñol, Carles (Association for the Advancement of Artificial Intelligence, 2008)
      In this paper we provide a new method to generate hard k-SAT instances. We incrementally construct a high girth bipartite incidence graph of the k-SAT instance. Having high girth assures high expansion for the graph, and ...
    • Generating highly balanced sudoku problems as hard problems 

      Ansótegui Gil, Carlos José; Béjar Torres, Ramón; Fernàndez Camon, César; Gomes, Carla; Mateu Piñol, Carles (Springer, 2011)
      Sudoku problems are some of the most known and enjoyed pastimes, with a never diminishing popularity, but, for the last few years those problems have gone from an entertainment to an interesting research area, a twofold ...
    • Geometry optimization of a heat storage system for concentrated solar power plants (CSP) 

      Solé, Aran; Falcoz, Quentin; Cabeza, Luisa F.; Neveu, Pierre (Elsevier, 2018)
      In the present study, geometry optimization of a phase change material (PCM) heat storage system is presented. The existing PCM-fins heat exchanger system works at the back side of a solar receiver in order to minimize the ...
    • Green facade for energy savings in buildings: The influence of leaf area index and facade orientation on the shadow effect 

      Pérez Luque, Gabriel; Coma Arpón, Julià; Sol i Felip, Salvador; Cabeza, Luisa F. (Elsevier, 2017)
      To “green” building envelopes is currently one of the most promising ways to provide energy savings in buildings and to contribute to the urban heat island effect mitigation. The shadow effect supplied by plants is the ...
    • Green roofs as passive system for energy savings when using rubber crumbs as drainage layer 

      Pérez Luque, Gabriel; Coma Arpón, Julià; Solé Cutrona, Cristian; Castell, Albert; Cabeza, Luisa F. (Elsevier, 2012)
      This study is another step of a long-term work in order to study the thermal behaviour of extensive green roofs in dry Mediterranean Continental climate. In this paper there are two main goals. On one hand, the possibility ...
    • Green vertical systems for buildings as passive systems for energy savings 

      Pérez Luque, Gabriel; Rincón, Lídia; Vila, Anna; González, J. M.; Cabeza, Luisa F. (Elsevier, 2011)
      This paper presents a classification of green vertical systems for buildings. The aim of this classification is to facilitate the identification and differentiation between systems. This classification is also essential ...
    • Greenery System for Cooling Down Outdoor Spaces: Results of an Experimental Study 

      Chàfer, Marta; Pisello, Anna Laura; Piselli, Cristina; Cabeza, Luisa F. (MDPI, 2020)
      Urban green infrastructure (UGI) and nature-based solutions (NBS) are increasingly recognized as strategies to address urban sustainability challenges. These solutions are attracting key scientific and marketing attention ...
    • Guidelines and Usability Principles to Design and Test Shared-Knowledge Awareness for a CSCL Interface 

      González Azconegui, María Paula; Collazos Ordóñez, César A.; Granollers i Saltiveri, Toni (Springer Verlag, 2006)
      Shared Knowledge Awareness is defined as the consciousness on the shared knowledge that a particular student has when carrying out a collaborative learning activity in a CSCL environment. In fact, an adequate level ...
    • H-PC: a cloud computing tool for supervising hypertensive patients 

      Vilaplana Mayoral, Jordi; Solsona Tehàs, Francesc; Abella i Pons, Francesc; Cuadrado, Josep; Teixidó Torrelles, Ivan; Mateo, Jordi; Rius Torrentó, Josep Maria (Springer Verlag, 2015)
      Hypertension or high blood pressure is a condition on the rise. Not only does it affect the elderly but it is also increasingly spreading to younger sectors of the population. Treating it involves exhaustive monitoring of ...
    • Hacia la arquitectura de la información 3.0: pasado, presente y futuro 

      García González, Roberto; Botella, Federico; Marcos Mora, Mari Carmen (EPI SCP, 2010)
      La arquitectura de la información (IA), aunque presente en cierta manera desde hace más de 50 años, ha tomado especial relevancia con la llegada de la Web y el aumento de la cantidad de información a nuestro alcance. La ...
    • HBPF: a Home Blood Pressure Framework with SLA guarantees to follow up hypertensive patients 

      Cuadrado, Josep; Vilaplana Mayoral, Jordi; Mateo, Jordi; Solsona Tehàs, Francesc; Solsona, Sara; Rius Torrentó, Josep Maria; Alves, Rui; Camafort, Miguel; Torres, Gerard; Betriu i Bars, M. Àngels; Gutiérrez Vilaplana, Josep M.; Fernández i Giráldez, Elvira (PeerJ, 2016)
      Hypertension or high blood pressure is a condition on the rise. Not only does it affect the elderly but is also increasingly spreading to younger sectors of the population. Treating it involves exhaustive monitoring of ...
    • Health hazard, cycling and thermal stability as key parameters when selecting a suitable phase change material (PCM) 

      Miró, Laia; Barreneche Güerisoli, Camila; Ferrer, Gerard; Solé, Aran; Martorell, Ingrid; Cabeza, Luisa F. (Elsevier, 2016)
      From the literature review it was observed that there is no established methodology, neither a common pattern, when selecting a phase change material for a thermal energy storage application. Melting temperature and enthalpy ...
    • Heat and mass transfer during adsorption of ammonia in a cylindrical adsorbent bed: thermal performance study of a combined parabolic solar collector, water heat pipe and adsorber generator assembly 

      Aghbalou, F.; Mimet, A.; Badia, F.; Illa i Alibés, Josep; El Bouardi, A.; Bougard, J. (Elsevier, 2004)
      In this paper we present the study of adsorption refrigerator which use an activated carbon-pair ammonia. The ability of activated carbons to adsorb large mass of ammonia makes them ideal for use in adsorption refrigeration ...
    • Heat transfer enhancement in water when used as PCM in thermal energy storage 

      Cabeza, Luisa F.; Mehling, Harald; Hiebler, Stefan; Ziegler, F. (Elsevier Science, 2002)
      Efficient and reliable storage systems for thermal energy are an important requirement in many applications where heat demand and supply or availability do not coincide. Heat and cold stores can basically be divided in two ...
    • Heat transfer enhancement of fatty acids when used as PCMs in thermal energy storage 

      Mazman, Muhsin; Cabeza, Luisa F.; Mehling, Harald; Paksoy, Halime Ö.; Evliya, Hunay (John Wiley & Sons, 2008)
      Phase change materials (PCM) used in latent heat storage systems usually have very low thermal conductivities. This is a major drawback in maintaining the required heat exchange rate between PCM and heat transfer fluid. ...
    • Heating and cooling energy trends and drivers in buildings 

      Cabeza, Luisa F.; Barreneche Güerisoli, Camila; Serrano, Susana; Petrichenko, Ksenia; Ürge-Vorsatz, Diana (Elsevier, 2015)
      The purpose of this paper is to provide a source of information on thermal energy use in buildings, its drivers, and their past, present and future trends on a global and regional basis. Energy use in buildings forms a ...
    • Heating and cooling energy trends and drivers in Europe 

      Serrano, Susana; Ürge-Vorsatz, Diana; Barreneche Güerisoli, Camila; Palacios, Anabel; Cabeza, Luisa F. (Elsevier, 2017)
      This paper aims to complete and complement the information available on the past trends of thermal energy consumption in residential buildings and its drivers for Europe, as a continent and for the different countries. ...
    • Hidrofugación del acabado del cuero 

      Bartolí Solé, Judit; Bacardit i Dalmases, Anna (Asociación Química Española de la Industria del Cuero, 2002)
      La importancia de los cueros hidrofugados ha aumentado considerablemente estos últimos años debido al auge de algunos deportes como el golf, el montañismo y los deportes de aventura en general. El calzado y demás artículos ...