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TECNALIA Publications
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432 Publications
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  • One-year-ahead energy demand estimation from macroeconomic variables using computational intelligence algorithms

    Salcedo-Sanz, Sancho; Muñoz-Bulnes, J.; Portilla-Figueras, Jose Antonio; Del Ser, Javier (2015)
    This paper elaborates on a problem of one-year ahead estimation of energy demand based on macroeconomic variables. To this end, two different Computational Intelligence approaches are herein evaluated: (1) a modified Harmony Search (HS) optimization algorithm with an exponential prediction model and (2) an Extreme Learning Machine (ELM). In the case of the HS, a feature selection of the best set of features for the prediction is carried out jointly with the optimization of the model’s paramet...

    Passive solar collector module for building facades (FR)

    Amundarain, Aitor; Campos, José María; José Antonio, Chica; Meno, Sandra; Uriarte, Amaia; Garay, Roberto; Herrero, Julio Cesar; Oliver, Marc; Pérez, Sergio; Elguezabal, Peru; Romero, Ander; Apraiz, Inés (2009)
    The invention relates to a passive solar collector module for building facades comprising a transparent panel and a heat absorbing panel, separated from one another by an air chamber and assembled in a frame; an upper air conduit for communicating the air chamber with an area close to the ceiling of a story of a building; a lower air conduit for communicating the air chamber with an area close to the floor of a story of a building; an environmental air inlet in the lower part of the module an...

    A methodology on how to create a real-life relevant risk profile for a given nanomaterial

    Schimpel, Christa; Resch, Susanne; Flament, Guillaume; Carlander, David; Vaquero-Moralejo, Celina; Bustero, Izaskun; Falk, Andreas (2017)
    Projects: EC | NANOGENTOOLS (691095), EC | Hi-Response (646296)
    With large amounts of nanotoxicology studies delivering contradicting results and a complex, moving regulatory framework, potential risks surrounding nanotechnology appear complex and confusing. Many researchers and workers in different sectors are dealing with nanomaterials on a day-to-day basis, and have a requirement to define their assessment/management needs. This paper describes an industry-tailored strategy for risk assessment of nanomaterials and nano-enabled products, whi...

    Development of electric resistance sintering process for the fabrication of hard metals: Processing, microstructure and mechanical properties

    Lagos, M.A.; Agote, Iñigo; Schubert, T.; Weissgaerber, T.; Gallardo, J.M.; Montes, J.M.; Prakash, L.; Andreouli, C.; Oikonomou, V.; Lopez, D.; Calero, J.A. (2017)
    Projects: EC | EFFIPRO (608729)
    This work presents the development of the Electrical Resistance Sintering (ERS) process for the fabrication of hard metals. The compositions of the materials produced were WC with 6 and 10 wt% of Co. In addition to the specific characteristics of the technology, the characterization of the produced parts is presented and compared to materials obtained by conventional processes. The parts produced by ERS present densities comparable to the ones obtained by conventional methods. The microst...

    Tribological study of lubricious DLC biocompatible coatings

    Brizuela, Marta; García-Luis, A.; Viviente, J.L.; Braceras, I.; Onate, J.I. (2002)
    DLC (diamond-like carbon) coatings have remarkable tribological properties due mainly to their good frictional behavior. These coatings can be applied in many industrial and biomedical applications, where sliding can generate wear and frictional forces on the components, such as orthopaedic metal implants. This work reports on the development and tribological characterization of functionally gradient titanium alloyed DLC coatings. A PVD-magnetron sputtering technique has been used as the depo...
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