Enviaments recents

  • Steady state analysis of Chua's circuit with RLCG transmission line 

    Bonet Dalmau, Jordi; Palà Schönwälder, Pere; Águila López, Francisco del (Institute of Electrical and Electronics Engineers (IEEE), 1999)
    Text en actes de congrés
    Accés obert
    In this paper we present a new technique to compute the steady state response of nonlinear autonomous circuits with RLCG transmission lines. Using multipoint Pade approximants, instead of the commonly used expansions around ...
  • Modeling and robust low level control of an omnidirectional mobile robot 

    Comasòlivas Font, Ramon; Quevedo Casín, Joseba Jokin; Escobet Canal, Teresa; Escobet Canal, Antoni; Romera Formiguera, Juli (2017-04-01)
    Article
    Accés restringit per política de l'editorial
    This paper presents the modeling and robust low-level control design of a redundant mobile robot with four omnidirectional wheels, the iSense Robotic (iSRob) platform, that was designed to test safe control algorithms. ...
  • Energy dissipation in the presence of sub-harmonic excitation in dynamic atomic force microscopy 

    Chiesa, Matteo; Gadelrab, Karim Raafat; Verdaguer, Albert; Segura, Juan José; Barcons Xixons, Víctor; Thomson, Neil H.; Phillips, M.A.; Stefancich, M.; Santos Hernández, Sergio (2012-09)
    Article
    Accés obert
    Amplitude modulation atomic force microscopy allows quantifying energy dissipation in the nanoscale with great accuracy with the use of analytical expressions that account for the fundamental frequency and higher harmonics. ...
  • Anharmonicity in multifrequency atomic force microscopy 

    Santos Hernandez, Sergio; Barcons Xixons, Víctor (2014-07)
    Report de recerca
    Accés obert
    In multifrequency atomic force microscopy higher eigenmodes are externally excited to enhance resolution and contrast while simultaneously increasing the number of experimental observables with the use of gentle forces. ...
  • Deconstructing the governing dissipative phenomena in the nanoscale 

    Santos Hernandez, Sergio; Amadei, Carlo Alberto; Tang, Tzu-Chieh; Barcons Xixons, Víctor; Chiesa, Matteo (2014-01)
    Report de recerca
    Accés obert
    An expression describing the controlling parameters involved in short range nanoscale dissipation is proposed and supported by simulations and experimental findings. The expression is deconstructed into the geometrical, ...
  • Wearing a single DNA molecule with an AFM tip 

    Santos Hernandez, Sergio; Barcons Xixons, Víctor; Font Teixidó, Josep; Thomson, Neil H. (2015-06)
    Report de recerca
    Accés obert
    While the fundamental limit on the resolution achieved in an atomic force microscope (AFM) is clearly related to the tip radius, the fact that the tip can creep and/or wear during an experiment is often ignored. This is ...
  • Cantilever dynamics in amplitude modulation AFM: continuous and discontinuous transitions 

    Santos Hernandez, Sergio; Barcons Xixons, Víctor; Font Teixidó, Josep; Thomson, Neil H. (2010-06-21)
    Article
    Accés obert
    Transitions between the attractive and the repulsive force regimes for amplitude modulation atomic force microscopy (AFM) can be either discontinuous, with a corresponding jump in amplitude and phase, or continuous and ...
  • Una red conceptual multinivel para analizar, modelizar y medir la sostenibilidad en sistemas socio-ecológicos 

    Ruiz, Jorge Paolini; Felipe Blanch, José Juan de; Sureda Carbonell, Bàrbara; Bermúdez, Darío; Rosales, Judith (Universidad de los Andes, 2011-11)
    Article
    Accés obert
    La propuesta que se presenta muestra el diseño de una red conceptual multinivel para determinar la sostenibilidad de un sistema socio-ecológico. Tal diseño pasa por establecer diferentes niveles conceptuales para determinar ...
  • Characteristics of the 3 most common types of occupational accident in Spanish sub-surface and surface mining, from 2003–2008 

    Sanmiquel Pera, Lluís; Vintró Sánchez, Carla; Freijo Álvarez, Modesto (2012-04)
    Article
    Accés obert
    The rate for work related accidents in Spanish mining has decreased during recent years. However, the incidence rate per 100,000 workers in the Spanish mining sector in 2007 was significantly higher than the ones reported ...
  • Heat generation model in the ball milling process of a Tantalum ore 

    Marino Saguero, Jessica; Jorge Sánchez, Juan; Menendez Aguado, Juan Maria; Álvarez Rodriguez, Beatriz; Felipe Blanch, José Juan de (2017-02)
    Article
    Accés restringit per política de l'editorial

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