Now showing items 1983-2002 of 72678

  • A new model for supply chain network design with integrated assembly line balancing decisions 

    Pereira Gude, Jordi; Vilà Bonilla, Mariona (Taylor & Francis, 2015-11-26)
    Article
    Open Access
    Supply chain network design aims at the integration of the different actors of a supply chain within a single framework in order to optimise the total profit of the system. In this paper, we consider the integration of ...
  • A new modelling approach for unsaturated soils using independent stress variables 

    Sheng, Daichao; Fredlund, Delwyn G.; Gens Solé, Antonio (2008-04)
    Article
    Restricted access - publisher's policy
    Although a number of constitutive models for unsaturated soils exist in the literature, some fundamental questions have not been fully answered. There are questions related to (i) the change of the yield stress with soil ...
  • A new MPPT method for low-power solar energy harvesting 

    López Lapeña, Oscar; Penella López, María Teresa; Gasulla Forner, Manuel (2010-09)
    Article
    Open Access
    This paper describes a new maximum-power-pointtracking (MPPT) method focused on low-power (< 1 W) photovoltaic (PV) panels. The static and dynamic performance is theoretically analyzed, and design criteria are provided. ...
  • A new multi-criteria optimization strategy for shared control in wheelchair assisted navigation 

    Sandoval, Francisco; Caltagirone, Carlo; Annicchiarico, Roberta; Cortés García, Claudio Ulises; Urdiales García, Cristina; Peula, José Ma.; Fernández-Carmona, Manuel; Barrué Subirana, Cristian; Pérez, Eduardo J.; Sánchez-Tato, Isabel; del Toro, J.C.; Galluppi, F. (2011-02-01)
    Article
    Restricted access - publisher's policy
    In todays aging society, many people require mobility assistance, that can be provided by robotized assistive wheelchairs with a certain degree of autonomy when manual control is unfeasible due to disability. Robot ...
  • A new multiscale model for methane flow in shale gas reservoirs including adsorption in organic nanopores and on clay surfaces 

    Dung Le, Tien; Murad, Marcio A. (Universitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica, 2015-06-02)
    Conference report
    Open Access
  • A new multisymplectic unified formalism for second order classical field theories 

    Prieto Martínez, Pedro Daniel; Román Roy, Narciso (American Institute of Mathematical Sciences, 2015-06-01)
    Article
    Restricted access - publisher's policy
    We present a new multisymplectic framework for second-order classical field theories which is based on an extension of the unified LagrangianHamiltonian formalism to these kinds of systems. This model provides a straightforward ...
  • A new optimal electricity market bid model solved through perspective cuts 

    Corchero García, Cristina; Mijangos Fernández, Eugenio; Heredia, F.-Javier (Francisco Javier) (Springer, 2011-11)
    Article
    Restricted access - publisher's policy
    On current electricity markets the electrical utilities are faced with very sophisticated decision making problems under uncertainty. Moreover, when focusing in the short-term management, generation companies must include ...
  • A new otolith image contour descriptor based on partial reflection 

    Reig Bolano, Ramon; Marti Puig, Pere; Lombarte, A.; Soria Pérez, José Antonio; Parisi Baradad, Vicenç (2010-12)
    Article
    Restricted access - publisher's policy
    In this paper we propose a new contour descriptor for reconstructing fish otolith contours that uses half the number of coefficients needed by the classical elliptical Fourier descriptors (EFDs) for the same accuracy. ...
  • A New Parametric Regenerator Allocation Scheme taking into account Inaccurate Physical Information 

    Marín Tordera, Eva; Yannuzzi, Marcelo; Serral Gracià, René; Masip Bruin, Xavier; Sánchez López, Sergio (2010-06-08)
    Conference report
    Open Access
    Regenerator allocation consists on selecting which of the already installed regenerators in a translucent network may be used according to the dynamic traffic requests in order to maximize the quality of the optical ...
  • A new passive repetitive controller for discrete-time finite-frequency positive-real systems 

    Costa Castelló, Ramon; Wang, Danwei; Griñó Cubero, Robert (IEEE Control Systems Society, 2007)
    Conference report
    Open Access
    This work proposes a new repetitive controller for discrete-time finite-frequency positive-real systems which are required to track periodic references or to attenuate periodic disturbances. The main characteristic of the ...
  • A new peak detector based on usage of CCCIIs 

    Petrovic, Predrag B. (SARTI, 2013)
    Article
    Open Access
  • A new phylogenetic reconstruction method based on invariants 

    Casanellas Rius, Marta; Fernández Sánchez, Jesús (2005)
    Article
    Open Access
    An attempt to use phylogenetic invariants for tree reconstruction was made at the end of the 80s and the beginning of the 90s by several authors (the initial idea due to Lake [Lake, 1987] and Cavender and Felsenstein [Cavender ...
  • A new power index based on minimal winning coalitions 

    Freixas Bosch, Josep; Alonso Meijide, José María (2009)
    External research report
    Restricted access - author's decision
    Nou índex de poder basat en coalicions shift-minimals
  • A new power index based on minimal winning coalitions without any surplus 

    Alonso Meijide, José María; Freixas Bosch, Josep (2010-04)
    Article
    Restricted access - author's decision
    In this paper we propose a new power index useful for the evaluation of each member in a committee, or democratic institution, and the degree of influence over the voting decision making system. The proposed solution is ...
  • A new pricing model of China’s parallel rail lines under the diversified property rights 

    Zhou, Shaoni; Zhang, Qiusheng; Wu, Xiaowei (School of Industrial and Aeronautic Engineering of Terrassa (ETSEIAT). Universitat Politècnica de Catalunya (UPC), 2013-04)
    Article
    Open Access
    Purpose: The purpose of this paper is to study on the pricing of China railway company under the background of diversified property rights, especially the pricing of the parallel line system that belong to different ...
  • A new probabilistic design methodology of nanoscale digital circuits 

    García Leyva, Lancelot; Calomarde Palomino, Antonio; Moll Echeto, Francisco de Borja; Rubio Sola, Jose Antonio (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
    Conference report
    Restricted access - publisher's policy
    The continuing trends of device scaling and increase in complexity towards terascale system on chip level of integration are putting growing difficulties into several areas of design. The intrinsic variability problem is ...
  • A new procedure for the hydrophobization of cellulose fibre using laccase and a hydrophobic phenolic compound 

    García Ubasart, Jordi; Colom Pastor, José F.; Vila Babarro, Carlos; Hernández, Núria; Roncero Vivero, María Blanca; Vidal Lluciá, Teresa (2012-05)
    Article
    Restricted access - publisher's policy
    A new biotechnological procedure using laccase in combination with a hydrophobic phenolic compound (lauryl gallate) for the hydrophobization of cellulose fibres and internal sizing of paper was developed. Cellulose fibres ...
  • A new procedure to compute imprints in multi-sweeping algorithms 

    Ruiz-Gironés, Eloi; Roca Navarro, Francisco Javier; Sarrate Ramos, Josep (2009-10-25)
    Conference report
    Open Access
    One of the most widely used algorithms to generate hexahedral meshes in extrusion volumes with several source and target surfaces is the multi-sweeping method. However, the multi-sweeping method is highly dependent on the ...
  • A new procedure to smooth and untangle meshes on parameterized surfaces 

    Gargallo Peiró, Abel; Roca Navarro, Xevi; Sarrate Ramos, Josep (Vienna University of Technology, 2012)
    Conference report
    Open Access
    We present a technique to extend any distortion (quality) measure for planar meshes to meshes on parameterized surfaces. The resulting distortion (quality) measure is expressed in terms of the parametric coordinates of the ...
  • A new proof of the Milliken-Akdeniz theorem 

    Neudecker, Heinz (Universitat Politècnica de Catalunya. Centre de Càlcul, 1989)
    Article
    Open Access
    A simple proof is given for a theorem by Milliken and Akdeniz (1977) about the difference of the Moore-Penrose inverses of two positive semi-definite matrices.