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Ara es mostren els items 5454-5473 de 245706

    • A new device laboratory: Experimental validation 

      Pujol Vázquez, Gisela; Acho Zuppa, Leonardo; Nápoles Alberro, Amelia; Estrada, J.; Santos, D.; Pérez Gracia, María de la Vega (2013)
      Comunicació de congrés
      Accés obert

    • A new digital predictive predistorter for behavioral power amplifier linearization 

      Montoro López, Gabriel; Gilabert Pinal, Pere Lluís; Bertran Albertí, Eduardo; Cesari Bohigas, Albert; Silveira, Daniel D. (Institute of Electrical and Electronics Engineers (IEEE), 2007-06)
      Article
      Accés obert
      This letter presents a new digital adaptive predistorter (PD) for power amplifier (PA) linearization based on a nonlinear auto-regressive moving average (NARMA) structure. The distinctive characteristic of this PD is ...

    • A new distribution to do statistics on k-ary trees 

      Cases Muñoz, Rafael; Díaz Cort, Josep; Martínez Parra, Conrado (1990-04-02)
      Report de recerca
      Accés obert
      In this paper we study distributions on k-ary trees, which from the point of doing statistics on trees, they behave in a more realistic way than the usual uniform distribution. In particular, we choose a distribution for ...

    • A new double curved element for technical textile analysis with bending resistance 

      Hegyi, Dezsö (CIMNE, 2011)
      Text en actes de congrés
      Accés obert
      A new double curved spatial element was developed to analyze textile structures. It has a bending resistance beside the inplane stiffness. The element is based on a 8-node double curved membrane element1. To find the ...

    • A new double-porosity macroscopic model of bentonite free swelling 

      Navarro Gámir, Vicente; Cabrera Soto, Virginia; de la Morena Borja, Gema; Asensio Sánchez, Laura; Yustres Real, Ángel; Torres Serra, Joel (2022-08)
      Article
      Accés obert
      A macroscopic model based on a double-porosity approach is proposed to simulate the swelling caused by the subdivision of particles and aggregates that occurs when bentonites are hydrated under a high water content and low ...

    • A new dynamic repositioning approach for bike sharing systems 

      Jiménez Meroño, Enrique; Soriguera Martí, Francesc (Elsevier, 2020)
      Article
      Accés obert
      Repositioning operations are fundamental on bike-sharing systems. Its optimization is necessary in order to achieve the best level of service with minimum agency cost. Literature propose routing models that preventively ...

    • A new efficient strategy to simulate particle breakage in DEM analyses 

      Ciantia, Matteo Oryem; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio; Calvetti, Francesco (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The discrete element method (DEM) is increasingly gaining acceptance as a modelling tool for engineering problems of direct geotechnical relevance. One area for which the method seems naturally well adapted is that of ...

    • A new electronic control system for unmanned underwater vehicles 

      Molina Molina, J.C.; Guerrero González, A.; Gilabert, J. (SARTI, 2015)
      Article
      Accés obert
      In this paper a new electronic control system for unmanned underwater vehicles is presented. This control system is characterized by a distribution in control over two network of type CANBus and Ethernet. This new ...

    • A new energy model for the Lakshadweep islands : Change from a diesel-based model to a hybrid model with renewable energy systems considering the ecological fragility of the islands 

      Alcoverro Colom, Pau (Universitat Politècnica de Catalunya, 2019-10-09)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      Realitzat a/amb:   Högskolan i Gävle
      Reducing dependence on fossil fuels is the need of the hour as climate change threatens to disrupt the world’s ecosystems. Nowhere are these effects more apparent than in small oceanic coral atolls. Balancing the energy ...

    • A new epoxy based layered silicate nanocomposite using a hyperbranched polymer: study of the curing reaction and nanostructure development 

      Cortés Izquierdo, María Pilar; Fraga Rivas, Iria; Calventus Solé, Yolanda; Hutchinson, John M. (2013)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Polymer layered silicate (PLS) nanocomposites based on epoxy resins have been widely studied previously [1], but the anticipated dramatic enhancement of their properties has not yet been realised. One approach to overcoming ...

    • A new epoxy-based layered silicate nanocomposite using a hyperbranched polymer: study of the curing reaction and nanostructure development 

      Cortés Izquierdo, María Pilar; Fraga Rivas, Iria; Calventus Solé, Yolanda; Román Concha, Frida Rosario; Hutchinson, John M.; Ferrando Piera, Francesc (2014-03-01)
      Article
      Accés obert
      Polymer layered silicate (PLS) nanocomposites have been prepared with diglycidyl ether of bisphenol-A (DGEBA) epoxy resin as the matrix and organically modified montmorillonite (MMT) as the clay nanofiller. Resin-clay ...

    • A new equilibrated residual method improving accuracy and efficiency of flux-free error estimates 

      Parés Mariné, Núria; Díez, Pedro (2017-01-01)
      Article
      Accés obert
      This paper presents a new methodology to compute guaranteed upper bounds for the energy norm of the error in the context of linear finite element approximations of the reaction–diffusion equation. The new approach revisits ...

    • A new era of coastal services 

      Carniel, Sandro; Bonaldo, Davide; Sánchez-Arcilla Conejo, Agustín (2018-01)
      Article
      Accés restringit per política de l'editorial
      The increasing quality and quantity of information provided by Copernicus (the European Union Programme funneling Earth Observation and in situ data into a broad set of information services) offer the possibility to analyse ...

    • A new estimation of the lower error bound in balanced truncation method 

      Ha Binh, Minh; Batlle Arnau, Carles; Fossas Colet, Enric (2014-08-01)
      Article
      Accés obert
      For a single-input/single-output (SISO) linear time-invariant dynamical system, the standard H-infinity-norm lower error bound of balanced truncation method is parallel to G(s) - G(r)(s)parallel to(H infinity) >= sigma(r+1), ...

    • A new evaluation framework for nature-based solutions (NBS) projects based on the application of performance questions and indicators approach 

      Sowinska Swierkosz, Barbara; García Serrano, Joan (Elsevier, 2021-09)
      Article
      Accés obert
      One of the key features of nature-based solutions (NBSs) is their high effectiveness and economic and resource efficiency in solving problems compared to traditional grey interventions. These aspects, however, have so far ...

    • A new experiments-based methodology to define the stability threshold for any vehicle exposed to flooding 

      Martínez Gomariz, Eduardo; Gómez Valentín, Manuel; Russo, Beniamino; Djordjevic, S. (Taylor & Francis, 2017-09)
      Article
      Accés obert
      A vehicle exposed to flooding, after losing stability, becomes buoyant and may be washed away with potential injuries and fatalities. Such vehicles cause additional disruption to traffic that is already affected by flooding, ...

    • A new flexible ONU design for UDWDM-PON with coherent transceivers and smart activation process 

      Segarra Mullerat, Josep; Sales Zaragozá, Vicente; Prat Gomà, Josep Joan; Pous, R. (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      We present a novel ONU architecture for coherent UDWDM-PON with randomly distributed ONU wavelengths. The ONU is built with one or two lasers exhibiting simple limited thermal tunability in a specific optical band, where ...

    • A new forecasting approach for the hospitality industry 

      Claveria, Oscar; Monte Moreno, Enrique; Torra Porras, Salvador (2015-10-01)
      Article
      Accés obert
      Purpose – This study aims to apply a new forecasting approach to improve predictions in the hospitality industry. To do so, the authors developed a multivariate setting that allows the incorporation of the cross-correlations ...

    • A New Formal Context for Symmetric Dependencies 

      Baixeries i Juvillà, Jaume (2011)
      Text en actes de congrés
      Accés obert
      In this paper we present a new formal context for symmetric dependencies. We study its properties and compare it with previous approaches. We also discuss how this new context may open the door to solve some open problems ...

    • A new formulation to assess the seismic demand of masonry structures by means of input energy 

      Meza, J. Miguel; Peña, Fernando (CIMNE, 2011)
      Text en actes de congrés
      Accés obert
      The main objective of this paper is to evaluate the elastic input energy of unreinforced masonry structures by means of the input energy spectrum. The energy is a novel approach which allows evaluating in a global and ...