Listar Comunicaciones y ponencias de congresos ISC - ISC biltzarretako komunikazioak eta txostenak por título

Mostrando ítems 62-81 de 226

    • Do we still need fuzzy classifiers for small data in the era of big data? 

      Elkano Ilintxeta, Mikel Upna Orcid; Bustince Sola, Humberto Upna Orcid; Galar Idoate, Mikel Upna Orcid (IEEE, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The Era of Big Data has forced researchers to explore new distributed solutions for building fuzzy classifiers, which often introduce approximation errors or make strong assumptions to reduce computational and memory ...

    • Dual-mode soft-transition control for single-phase grid-connected photovoltaic inverters 

      Elizondo Martínez, David Upna Orcid; Urtasun Erburu, Andoni Upna Orcid (IEEE, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Single-phase grid-connected inverters for photovoltaic power generation have been strongly analysed for improvement. Dual-mode control for two-stage inverters makes it possible to improve the efficiency by alternating ...

    • Dynamic modeling and simulation of a pressurized alkaline water electrolyzer: a multiphysics approach 

      Iribarren Zabalegui, Álvaro Upna; Barrios Rípodas, Ernesto Upna Orcid; Ibaiondo, Harkaitz; Sánchez-Ruiz, Alain; Arza, Joseba; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper a dynamic model for the simulation of pressurized alkaline water electrolyzers is presented. The model has been developed following a multiphysics approach, integrating electrochemical, thermodynamic, heat ...

    • Economic analysis of residential PV self-consumption systems with Li-ion batteries under different billing scenarios 

      Galilea Gil, Carlos Upna Orcid; Pascual Miqueleiz, Julio María Upna Orcid; Berrueta Irigoyen, Alberto Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid; Marroyo Palomo, Luis Upna Orcid (IEEE, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper, an economic analysis for four houses with a PV self-consumption system with and without Li-ion batteries is carried out. In particular three different ways of sizing PV and batteries are analyzed under three ...

    • Effect of the inner current loop on the voltage regulation for three-phase photovoltaic inverters 

      Urtasun Erburu, Andoni Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Marroyo Palomo, Luis Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In three-phase grid-connected PV inverters, regulating the input voltage is a fundamental requirement. In order to reduce the influence of the PV non-linear behavior and ensure stability in the whole operating range, the ...

    • Effective analysis of secure web response time 

      López Romera, Carlos Upna; Morató Osés, Daniel Upna Orcid; Magaña Lizarrondo, Eduardo Upna Orcid; Izal Azcárate, Mikel Upna Orcid (IEEE, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The measurement of response time in web based applications is a common task for the evaluation of service responsiveness and the detection of network or server problems. Traffic analysis is the most common strategy for ...

    • An empirical study on supervised and unsupervised fuzzy measure construction methods in highly imbalanced classification 

      Uriz Martín, Mikel Xabier Upna Orcid; Paternain Dallo, Daniel Upna Orcid; Bustince Sola, Humberto Upna Orcid; Galar Idoate, Mikel Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The design of an ensemble of classifiers involves the definition of an aggregation mechanism that produces a single response obtained from the information provided by the classifiers. A specific aggregation methodology ...

    • Energy harvesting approaches in IoT scenarios with very low ambient energy 

      López Martín, Antonio Upna Orcid; Algueta-Miguel, Jose M. Upna Orcid; Matías Maestro, Ignacio Upna Orcid (European Association for the Development of Renewable Energy, Environment and Power Quality (EA4EPQ), 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The feasibility of multi-source energy harvesting in Internet of Things (IoT) scenarios with low and intermittent ambient energy is addressed. As a relevant case study, application to a smart cargo container system is ...

    • Enhanced optical fiber lasers and optical fiber sensors assisted by micro-drilled optical fibers 

      Pérez Herrera, Rosa Ana Upna Orcid; Bravo Acha, Mikel Upna Orcid; Roldán Varona, Pablo; Leandro González, Daniel Upna Orcid; Rodríguez Cobo, Luis; López Higuera, José Miguel; López-Amo Sáinz, Manuel Upna Orcid (Optica, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Enhanced OFS assisted by micro-drilled optical fibers acting as mirrors are demonstrated. Strain sensitivity improved more than one order of magnitude in comparison with FBG sensors using a 50 μm-waist micro-drilled taper ...

    • Enhancement of the sensitivity of a volatile organic compounds MOF sensor by means of its structure 

      López Torres, Diego Upna Orcid; López Aldaba, Aitor Upna; Elosúa Aguado, César Upna Orcid; Auguste, Jean-Louis; Jamier, Raphael; Roy, Philippe; López-Amo Sáinz, Manuel Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid (MDPI, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper, we experimentally compare several core structures of Microstructured Optical Fibers (MOFs) for low-finesse Fabry-Pérot (FP) sensors. These sensors are designed for Volatile Organic Compounds (VOCs) measurements. ...

    • Enhancing engineering competencies curricula in the context of university-industry chairs 

      Sanchis Gúrpide, Pablo Upna Orcid; San Martín Biurrun, Idoia Upna Orcid; Berrueta Irigoyen, Alberto Upna Orcid; Samanes Pascual, Javier Upna Orcid; Parra Laita, Íñigo de la Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid; Astrain Ulibarrena, David Upna Orcid; Goicoechea Fernández, Javier Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      University-industry Chairs can play a key role to enhance the acquisition of certain curricular competencies of the Engineering Degrees such as teamwork capability, oral and written communication skills, entrepreneurship ...

    • Enhancing the efficiency of the interval-valued fuzzy rule-based classifier with tuning and rule selection 

      Sanz Delgado, José Antonio Upna Orcid; Asmus, Tiago Upna Orcid; Osa Hernández, Borja de la Upna; Bustince Sola, Humberto Upna Orcid (Springer, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Interval-Valued fuzzy rule-based classifier with TUning and Rule Selection, IVTURS, is a state-of-the-art fuzzy classifier. One of the key point of this method is the usage of interval-valued restricted equivalence functions ...

    • Enhancing the infrared and visible emission properties of calcium silicate hydrate for radiative cooling using metamaterials 

      Lezaun Capdevila, Carlos; Dolado, J. S.; Torres García, Alicia E. Upna Orcid; Pérez Escudero, José Manuel Upna Orcid; Liberal Olleta, Íñigo Upna Orcid; Beruete Díaz, Miguel Upna Orcid (IEEE, 2022)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Two periodic structures composed of metal cylinders with different orientations are used to improve the solar reflection of calcium silicate hydrate (CSH) while maintaining its atmospheric emission. Interesting effects ...

    • Erbium-doped fiber ring cavity for the measurement of refractive index variations 

      Pérez Herrera, Rosa Ana Upna Orcid; Soares, Liliana; Novais, Susana; Frazão, Orlando; Silva, Susana (SPIE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this work, an erbium-doped fiber ring cavity based on a 3dB optical coupler for refractive index measurements is presented and experimentally verified. This interrogation system, based on a 1 x 2 optical coupler, uses ...

    • Estimation of the solar thermal power generation potential in Pamplona (northern Spain) 

      García Ruiz, Ignacio Upna Orcid; Prieto Cobo, Eduardo Upna Orcid; Torres Escribano, José Luis Upna Orcid (Universidad Carlos III, 2022)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this work, an analysis of the potential of the city of Pamplona to produce solar thermal energy was carried out, according to the solar radiation received. As a result, for each residential, industrial, or service ...

    • Evolution of L-fuzzy contexts associated with criteria 

      Alcalde, Cristina; Burusco Juandeaburre, Ana Upna Orcid (Springer, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This paper will delve deeper into the general study of the L-fuzzy contexts associated with criteria analyzing situations with a known evolution over time. These criteria may be independent or dependent on each other. We ...

    • Evolutionary algorithms applied to multi-layered radiative cooling metamaterials 

      Lezaun Capdevila, Carlos; Jorajuría, Tania Upna Orcid; Torres García, Alicia E. Upna Orcid; Herrera, Pilar; Beruete Díaz, Miguel Upna Orcid (IEEE, 2022)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A newly design method for designing multi-layered radiative cooling metamaterials based on genetic algorithms (GAs) is exposed. The developed GA has been tested in three cases, resulting in three different structures that ...

    • Experimental development of a novel thermoelectric generator without moving parts to harness shallow hot dry rock fields 

      Alegría Cía, Patricia; Rodríguez García, Antonio Upna Orcid; Catalán Ros, Leyre Upna Orcid; Astrain Ulibarrena, David Upna Orcid; Araiz Vega, Miguel Upna Orcid (2021)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Nowadays, geothermal energy in shallow hot dry rocks is not exploited enough due to the high economic and environmental impact as well as the lack of scalability of the existing technologies. Here, thermoelectricity has a ...

    • Experimental study of a multistage thermoelectric heat pump using different internal heat exchangers 

      Erro Iturralde, Irantzu; Aranguren Garacochea, Patricia Upna Orcid; Astrain Ulibarrena, David Upna Orcid (2021)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The current need to carry out an energy transition towards a 100 % renewable horizon places the energy storage as the key. Thermal energy storage has the potential to be an optimal technology. Nowadays electrical resistors ...

    • Femtosecond laser inscription of diffraction gratings in CYTOP fibers for optical fiber sensing 

      Lomer, Mauro; Roldán Varona, Pablo; Algorri, J. F.; Rodríguez Cobo, Luis; Pérez Herrera, Rosa Ana Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid; López Higuera, José Miguel (SEDOPTICA, 2021)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The use of the new CYTOP fibers for the inscription of optical structures and the sensing of different parameters has started to gain importance in the last decade. This work presents the design and manufacture of a CYTOP ...
      El Repositorio ha recibido la ayuda de la Fundación Española para la Ciencia y la Tecnología para la realización de actividades en el ámbito del fomento de la investigación científica de excelencia, en la Línea 2. Repositorios institucionales (convocatoria 2020-2021).
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