Ara es mostren els items 28336-28355 de 87888

  • Dynamics of fast pattern formation in porous silicon by laser interference 

    Pelaez de Fuentes, Ramon Javier; Khun, Timo; Vega Lerín, Fidel; Afonso Rodriguez, Carmen Nieves (2014-10-24)
    Article
    Accés obert
    Patterns are fabricated on 290 nm thick nanostructured porous silicon layers by phase-mask laser interference using single pulses of an excimer laser (193 nm, 20 ns pulse duration). The dynamics of pattern formation is ...
  • Dynamics of globally delay-coupled neurons displaying subthreshold oscillations 

    Masoller Alonso, Cristina; Torrent Serra, Maria del Carmen; García Ojalvo, Jordi (2009-08)
    Article
    Accés restringit per política de l'editorial
    We study an ensemble of neurons that are coupled through their time-delayed collective mean field. The individual neuron is modelled using a Hodgkin–Huxley-type conductance model with parameters chosen such that the uncoupled ...
  • Dynamics of Heel Strike in Bipedal Systems with Circular Feet 

    Font Llagunes, Josep Maria; Kövecses, József (Marco Ceccarelli, 2008)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Energetic efficiency is a fundamental subject of research in bipedal robot locomotion. In such systems, the collision of the foot with the ground at heel strike is the main cause of energy loss during the gait. In this ...
  • Dynamics of integrable birational maps preserving genus 0 foliations 

    Llorens, Mireia; Mañosa Fernández, Víctor (2014-10-03)
    Altres
    Accés obert
  • Dynamics of Many-Body Quantum Systems 

    Giménez Grau, Aleix (Universitat Politècnica de Catalunya, 2015-07-03)
    Treball Final de Grau
    Accés obert
    We study the ground state and the excitations of quantum bose systems. The hypernetted chain equations (HNC) are introduced and we show that the methods based on them produce acceptable approximations of the static structure ...
  • Dynamics of matter wave solitons 

    Polo Gómez, Juan (Universitat Politècnica de Catalunya / Universitat Autònoma de Barcelona, 2012-09-04)
    Projecte Final de Màster Oficial
    Accés obert
    [ANGLÈS] We study the implementation of a matter wave bright soliton interferometer formed by a Gaussian potential barrier placed at the center of a harmonic trap potential. After numerically evaluating the transmission ...
  • Dynamics of metallic glasses explored by mechanical relaxation 

    Liu, Chaoren (Universitat Politècnica de Catalunya, 2015-10-07)
    Tesi
    Accés obert
    Dynamic mechanical analysis (DMA) is often used to explore the relaxation dynamics of metallic glasses (MGs). Secondary relaxations in metallic glasses appear as an excess wing, as a shoulder of the primary relaxation peak ...
  • Dynamics of non-ideal topology transitions in multibody mechanical systems 

    Font Llagunes, Josep Maria; Kövecses, József (ASME PRESS, 2009)
    Comunicació de congrés
    Accés restringit per política de l'editorial
  • Dynamics of nutrients in a grassland in the humid north-east of Spain upon application of pig slurry 

    Antúnez, Montserrat; Boixadera, Jaume; Teira-Esmatges, Maria Rosa; Porta Casanellas, Jaume; Flotats Ripoll, Xavier (1996)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    Dynamics of nutrients in a grassland in the humid north-east of Spain upon application of pig slurry
  • Dynamics of oligotrophic pelagic environments:North western Mediterranean sea and subtropical north Atlantic 

    Bahamón Rivera, Nixon (Universitat Politècnica de Catalunya, 2002-05-24)
    Tesi
    Accés obert
    The response of phytoplankton to various ecological forcings was examined in the upper waters of the NW Mediterranean (MED) and the subtropical North Atlantic (NA) from field observations, analysis of historical data sets ...
  • Dynamics of optically levitated nanoparticles in high vacuum 

    Gieseler, Jan (Universitat Politècnica de Catalunya, 2014-02-03)
    Tesi
    Accés obert
    Nanotechnology was named one of the key enabling technologies by the European Commission and its tremendous impact was envisioned early by 20th century physicist R.Feynman in his now oft-quoted talk "Plenty of Room at the ...
  • Dynamics of orientationally disordered mixed crystal sharing Cl-adamantane and CN-adamantane 

    Martínez García, Julio Cesar; Capaccioli, Simon; Díez Berart, Sergio; Tamarit Mur, José Luis; Barrio Casado, María del; Veglio, Néstor Raúl; Pardo Soto, Luis Carlos (2010-01-27)
    Article
    Accés restringit per política de l'editorial
    Orientationally disordered (OD) mixed crystals formed between cyanoadamantane (CN-A) and chloroadamantane (Cl-A) have been thermodynamically characterized by means of thermal analysis and X-ray diffraction. The dynamics ...
  • Dynamics of quadratic soliton excitation 

    Artigas García, David; Torner Sabata, Lluís; Akhmediev, N (1999-04)
    Article
    Accés restringit per política de l'editorial
    We study the dynamics of the soliton–radiation interaction in the process of soliton excitation in quadratic nonlinear media. The focus is on the dynamics of initial signals that are not weakly perturbed exact solitons. ...
  • Dynamics of reaction-diffusion patterns controlled by asymmetric nonlocal coupling as a limiting case of differential advection 

    Siebert, Julien; Alonso Muñoz, Sergio; Bär, Markus; Schöll, Eckehard (2014-05-14)
    Article
    Accés obert
    A one-component bistable reaction-diffusion system with asymmetric nonlocal coupling is derived as a limiting case of a two-component activator-inhibitor reaction-diffusion model with differential advection. The effects ...
  • Dynamics of relations in the urban space 

    Kantarek, Anna Agata (Centre de Política de Sòl i Valoracions, 2016-07)
    Text en actes de congrés
    Accés obert
    Questions about sense usually accompany the times of breakthrough, when we recognise a crisis of certain values and we helplessly face realistic threats and changes. If experiences incessantly call for answers to the ...
  • Dynamics of shoreface-connected and inactive sand ridges on a shelf, Part 2: The role of sea level rise and associated changes in shelf geometry 

    Nnafie, Abdel; de Swart, Huib E.; Calvete Manrique, Daniel; Garnier, Roland Charles (2015-08)
    Article
    Accés restringit per política de l'editorial
    Many inner continental shelves are characterized by the presence of large rhythmic bedforms, such as shoreface-connected ridges and the more offshore located sand ridges, which have heights of several meters and are spaced ...
  • Dynamics of single-barred embayed beaches 

    Ojeda Casillas, Elena; Guillén Aranda, Jorge; Ribas Prats, Francesca (2011-02-15)
    Article
    Accés obert
    The dynamics of single submerged sandbars of two artificial embayed beaches (La Barceloneta and Bogatell, Barcelona, NW Mediterranean) has been studied with a video-recorded data set of 4.3 years. The alongshore-averaged ...
  • Dynamics of spinor fermions 

    Ebling, Ulrich (Universitat Politècnica de Catalunya, 2014-11-03)
    Tesi
    Accés obert
    Ultracold atomic gases have established themselves as quantum systems, which are clean and offer a high degree of control over crucial parameters. They are well isolated from their environment and thus offer the possibility ...
  • Dynamics of the MEMS pulsed digital oscillator with multiple delays in the feedback loop 

    Blokhina, Elena; Feely, Orla; Domínguez Pumar, Manuel (IEEE Press. Institute of Electrical and Electronics Engineers, 2009-05)
    Text en actes de congrés
    Accés obert
    In this paper we apply methods of nonlinear dynamics to examine the behavior of the pulsed digital oscillator for microelectromechanical systems (MEMS). We study the regions of existence of oscillations and demonstrate ...
  • Dynamics of the parabolic restricted three-body problem 

    Barrabés Vera, Esther; Cors Iglesias, Josep Maria; Ollé Torner, Mercè (2015-12-01)
    Article
    Accés obert
    The main purpose of the paper is the study of the motion of a massless body attracted, under the Newton's law of gravitation, by two equal masses moving in parabolic orbits all over in the same plane, the planar parabolic ...