• Active control of Alfvén eigenmodes inmagnetically confined toroidal plasmas 

      Garcia Muñoz, Manuel; Shaparov, Sergei; Zeeland, Michael A, Van; Ascasibar, Enrique; Cappa, Álvaro; Chen, L; Ferreira, J; Galdon Quiroga, Joaquin; Geiger, Benedikt; González Martin, J; Heidbrink, William W.; Johnson, T; Lauber, Phillipp; Mantsinen, Mervi; Melkinov, Alexander; Nabais, F; Rivero Rodríguez, Juan Francisco; Sanchis Sanchez, Lucía; Schneider, P; Stober, Jörg; Suttrop, Wolfgang; Todo, Yasushi; Vallejos, Pablo; Zonca, Fulvio; AUG and MST1 Teams (IOP Publishing, 2019-03)
      Article
      Accés obert
      Alfvén waves are electromagnetic perturbations inherent to magnetized plasmas that can be driven unstable by a free energy associated with gradients in the energetic particles' distribution function. The energetic particles ...
    • Analysis of behavior of a simple eigenvalue of singular system 

      García Planas, María Isabel; Tarragona, Sonia (WSEAS Press, 2013)
      Comunicació de congrés
      Accés obert
      Small perturbations of simple eigenvalues with a change of parameters is a problem of general interest in applied mathematics. The aim of this work is to study the behavior of a simple eigenvalue of singular linear ...
    • Analysis of behavior of a simple eigenvalue of singular system 

      García Planas, María Isabel; Tarragona, Sonia (WSEAS Press, 2013-09)
      Capítol de llibre
      Accés obert
      Small perturbations of simple eigenvalues with a change of parameters is a problem of general interest in applied mathematics. The aim of this work is to study the behavior of a simple eigenvalue of singular linear ...
    • Assessment of the capabilities and applicability of ionospheric perturbation indices provided in Europe 

      Borries, Claudia; Wilken, Volken; Jacobsen, Knut Stanley; García Rigo, Alberto; Dziak-Jankowska, Beata; Kervalishvili, Guram; Jakowski, Norbert; Tsagouri, Ioanna; Hernández Pajares, Manuel; Ferreira, Arthur A.; Hoque, Mainul (2020-08-01)
      Article
      Accés obert
      Perturbations in the ionosphere are of great interest not only for scientific research, but also for applications using transionospheric radiosignals (e.g. GNSS applications and HF communication), because the transmission ...
    • Critical velocity in kink solutions of the sine-Gordon equation 

      Sanchis Ramírez, Guillem (Universitat Politècnica de Catalunya, 2017-07)
      Projecte Final de Màster Oficial
      Accés obert
      The goal of this work is to present a way to deduce the value of the critical velocity observed in soliton-like solutions of a perturbed version of the sine-Gordon equation. To do so, an ODE system is obtained from the ...
    • Increased sensitivity to strong perturbations in a whole-brain model of LSD 

      Jobst, Beatrice M.; Atasoy, Selen; Ponce Álvarez, Adrián Fernando; Sanjuan, Ana; Roseman, Leor; Kaelen, Mendel; Carhart-Harris, Robin; Kringelbach, Morten L.; Deco, Gustavo (2021-04-15)
      Article
      Accés obert
      Lysergic acid diethylamide (LSD) is a potent psychedelic drug, which has seen a revival in clinical and pharmacological research within recent years. Human neuroimaging studies have shown fundamental changes in brain-wide ...
    • Perturbation analysis of a matrix differential equation ¿x=ABx 

      García Planas, María Isabel; Klymchuk, Tetiana (UP4, Institute of Sciences, S.L., 2018)
      Article
      Accés restringit per política de l'editorial
      Two complex matrix pairs (A,B) and (A',B') are contragrediently equivalent if there are nonsingular S and R such that (A',B')=(S-1AR,R-1BS). M.I. García-Planas and V.V. Sergeichuk (1999) constructed a miniversal deformation ...
    • Perturbation analysis of simple eigenvalues of singular linear systems 

      Tarragona Romero, Sonia; García Planas, María Isabel (2013)
      Text en actes de congrés
      Accés obert
      In this work a study of the behavior of a simple eigenvalue of singular linear system family E ( p )_ x = A ( p ) x + B ( p ) u , y = C ( p ) x smoothly dependent on a vector of real parameters p = ...
    • Using in silico perturbational approach to identify critical areas in schizophrenia 

      Vila Vidal, Manel; Kringelbach, Morten L.; Deco, Gustavo (2023-06-15)
      Article
      Accés restringit per política de l'editorial
      Schizophrenia is a debilitating neuropsychiatric disorder whose underlying correlates remain unclear despite decades of neuroimaging investigation. One contentious topic concerns the role of global signal (GS) fluctuations ...