Recent Submissions

  • An inextensible model for the robotic manipulation of textiles 

    Coltraro Ianniello, Franco; Amorós Torrent, Jaume; Alberich Carramiñana, Maria; Torras, Carme (2022-01-01)
    Article
    Open Access
    We introduce a new isometric strain model for the study of the dynamics of cloth garments in a moderate stress environment, such as robotic manipulation in the neighborhood of humans. This model treats textiles as surfaces ...
  • A K-contact Lagrangian formulation for nonconservative field theories 

    Gaset Rifà, Jordi; Gràcia Sabaté, Francesc Xavier; Muñoz Lecanda, Miguel Carlos; Rivas Guijarro, Xavier; Román Roy, Narciso (2021-06-01)
    Article
    Restricted access - publisher's policy
    Dynamical systems with dissipative behaviour can be described in terms of contact manifolds and a modified version of Hamilton's equations. Dissipation terms can also be added to field equations, as showed in a recent paper ...
  • Skinner–Rusk formalism for k-contact systems 

    Gràcia Sabaté, Francesc Xavier; Rivas Guijarro, Xavier; Román Roy, Narciso (2022-02-01)
    Article
    Open Access
    In previous papers, a geometric framework has been developed to describe non-conservative field theories as a kind of modified Lagrangian and Hamiltonian field theories. This approach is that of k-contact Hamiltonian ...
  • Limiting probabilities of first order properties of random sparse graphs and hypergraphs 

    Larrauri Borroto, Lázaro Alberto; Müller, Tobias; Noy Serrano, Marcos (2021-08-18)
    Article
    Restricted access - publisher's policy
    Let Gn be the binomial random graph G(n, p = c/n) in the sparse regime, which as is well-known undergoes a phase transition at c = 1. Lynch (Random Structures Algorithms, 1992) showed that for every first order sentence ...
  • Probabilities of first-order sentences on sparse random relational structures: An application to definability on random CNF formulas 

    Larrauri Borroto, Lázaro Alberto (Oxford University Press, 2021-03-01)
    Article
    Open Access
    We extend the convergence law for sparse random graphs proven by Lynch to arbitrary relational languages. We consider a finite relational vocabulary s and a first-order theory T for s composed of symmetry and anti-reflexivity ...
  • R-LWE-Based distributed key generation and threshold decryption 

    Alborch Escobar, Ferran; Martínez Pinilla, Ramiro; Morillo Bosch, M. Paz (Multidisciplinary Digital Publishing Institute (MDPI), 2022-02-25)
    Article
    Open Access
    Ever since the appearance of quantum computers, prime factoring and discrete logarithm based cryptography has been put in question, giving birth to the so called post-quantum cryptography. The most prominent field in ...
  • State-space model of quasi-z-source inverter-PV systems for transient dynamics studies and network stability assessment 

    Monjo Mur, Lluís; Sainz Sapera, Luis; Mesas García, Juan José; Pedra Durán, Joaquim (2021-07-09)
    Article
    Open Access
    Photovoltaic (PV) power systems are increasingly being used as renewable power generation sources. Quasi-Z-source inverters (qZSI) are a recent, high-potential technology that can be used to integrate PV power systems into ...
  • Quasi-z-source inverter-based photovoltaic power system modeling for grid stability studies 

    Monjo Mur, Lluís; Sainz Sapera, Luis; Mesas García, Juan José; Pedra Durán, Joaquim (2021-01-19)
    Article
    Open Access
    Quasi-Z-source inverters (qZSIs) are becoming a powerful power conversion technology in photovoltaic (PV) power systems because they allow energy power conversion in a single stage operation. However, they can cause system ...
  • Interpolation of subdivision features for curved geometry modeling 

    Jiménez Ramos, Albert; Gargallo Peiró, Abel; Roca Navarro, Francisco Javier (2022-04)
    Article
    Restricted access - publisher's policy
    We present a nodal interpolation method to approximate a subdivision model. The main application is to model and represent curved geometry without gaps and preserving the required simulation intent. Accordingly, we devise ...
  • Average value of the DC-link output voltage in multi-phase uncontrolled bridge rectifiers under supply voltage balance and unbalance conditions 

    Saura Perisé, Jaime; Mesas García, Juan José; Sainz Sapera, Luis (2021-12-01)
    Article
    Restricted access - publisher's policy
    Average value of the DC-link output voltage is a variable of interest in multi-phase uncontrolled bridge rectifiers. The aim of this paper is to present a new, effort-saving procedure capable of providing an accurate value ...
  • Geometrically polarized architected dielectrics with apparent piezoelectricity 

    Mocci, Alice; Barceló Mercader, Jordi; Codony Gisbert, David; Arias Vicente, Irene (2021-12)
    Article
    Open Access
    Through the suitable geometry of a repeating unit, a metamaterial can exhibit a property not present in the base material. Here, we propose a class of low area-fraction, bending-dominated metamaterials that exhibit apparent ...
  • The force loading rate drives cell mechanosensing through both reinforcement and cytoskeletal softening 

    Andreu Arzuaga, Ion; Falcones Olarte, Bryan; Hurst, Sebastian; Chahare, Nimesh Ramesh; Quiroga Álvarez, Xarxa; Le Roux, Anabel-Lise; Kechagia, Zanetta; Beedle, Amy E.M.; Elósegui Artola, Alberto; Trepat Guixer, Xavier; Farré Ventura, Ramon (2021-07-09)
    Article
    Open Access
    Cell response to force regulates essential processes in health and disease. However, the fundamental mechanical variables that cells sense and respond to remain unclear. Here we show that the rate of force application ...

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