MMAC - Models Matemàtics aplicats a les ciencies humanes i de la natura: Enviaments recents

Ara es mostren els items 1-12 de 17

    • A new approach to the vakonomic mechanics 

      Llibre Saló, Jaume; Ramírez Ros, Rafael; Sadovskaia Nurimanova, Natalia Guennadievna (2014-11-01)
      Article
      Accés restringit per política de l'editorial
      The aim of this paper was to show that the Lagrange-d'Alembert and its equivalent the Gauss and Appel principle are not the only way to deduce the equations of motion of the nonholonomic systems. Instead of them we consider ...

    • Emotional inertia: a key to understanding psychotherapy process and outcome 

      Bornas Agustí, F. Xavier; Noguera Batlle, Miquel; Pincus, David; Buela Casal, Gualberto (2014-09-01)
      Article
      Accés restringit per política de l'editorial
      The processes underlying psychotherapeutic change have increasingly been emphasized in both research and clinical practice. Nonlinear dynamical systems theory (NDS) offers a transdisciplinary scientific approach to the ...

    • An improvement of Ostrowski root-finding method 

      Grau Sánchez, Miguel; Díaz Barrero, José Luis (2006-02)
      Article
      Accés restringit per política de l'editorial
      An improvement to the iterative method based on the Ostrowski one to compute nonlinear equation solutions, which increases the local order of convergence is suggested. The adaptation of a strategy presented here gives a ...

    • Theoretical dark matter halo kinematics and triaxial shape 

      Salvador-Solé, Eduard; Serra, Sinué; Manrique, Alberto; González Casado, Guillermo (2012-08-21)
      Article
      Accés obert
      In a recent paper, Salvador-Solé et al. have derived the typical inner structure of dark matter haloes from that of peaks in the initial random Gaussian density field, determined by the power spectrum of density perturbations ...

    • Dynamical behavior of asteroids near resonance: the 4:1 gap and the 7:2 group 

      Grau Sánchez, Miguel; González Casado, Guillermo (1999-08)
      Article
      Accés restringit per política de l'editorial
      A comparative study of the evolution of the Sun–Jupiter–Asteroid system near the 4:1 and 7:2 resonances is performed by means of two techniques that proceed differently from the Hamiltonian corresponding to the planar ...

    • Origin and modelling of cold dark matter halo properties: IV. Triaxial ellipticity 

      Salvador-Solé, Eduard; Serra, Sinué; Manrique, Alberto; González Casado, Guillermo (2011-04-15)
      Report de recerca
      Accés obert
      In the three preceding papers in the series, we presented a model dealing with the global and small-scale structure and kinematics of hierarchically assembled, virialised, collisionless systems, which correctly accounted ...

    • A technique to composite a modified Newton's method for solving nonlinear equations 

      Grau Sánchez, Miguel; Díaz Barrero, José Luis (2011-05-02)
      Report de recerca
      Accés obert
      A zero-finding technique for solving nonlinear equations more efficiently than they usually are with traditional iterative methods in which the order of convergence is improved is presented. The key idea in deriving this ...

    • On computational order of convergence of some multi-precision solvers of nonlinear systems of equations 

      Grau Sánchez, Miguel; Grau Gotés, Maria Àngela; Díaz Barrero, José Luis (2011-05-02)
      Report de recerca
      Accés obert
      In this paper the local order of convergence used in iterative methods to solve nonlinear systems of equations is revisited, where shorter alternative analytic proofs of the order based on developments of multilineal ...

    • Uso de sismogramas antiguos para el estudio de paràmetros focales de terremotos ibèricos. 

      Batlló Ortiz, Josep; Teves-Costa, Paula; Stich, Daniel; Macià Jové, Ramon; Morales Soto, Jose (2009)
      Comunicació de congrés
      Accés obert

    • On the 16th Hilbert problem for limit cycles on nonsingular algebraic curves 

      Llibre Saló, Jaume; Ramírez Inostroza, Rafael Orlando; Sadovskaia Nurimanova, Natalia Guennadievna (2011-01-15)
      Article
      Accés restringit per política de l'editorial
      We give an upper bound for the maximum number N of algebraic limit cycles that a planar polynomial vector field of degree n can exhibit if the vector field has exactly k nonsingular irreducible invariant algebraic curves. ...

    • Estudi de la transformació de l'espai de color RGB a l'espai de color HSV 

      Grau Gotés, Maria Àngela; Grau Sánchez, Miguel; Montseny Masip, Eduard; Sobrevilla Frisón, Pilar (2008-09-26)
      Report de recerca
      Accés obert
      S’apliquen les tècniques clàssiques de propagació de l’error a la transformació de l’espai de color RGB en l’espai de color HSV a un conjunt de 1098 imatges test. El conjunt d’imatges test són 183 paletes de color i sis ...

    • Linear and nonlinear analyses of EEG dynamics during non-painful somatosensory processing in chronic pain patients 

      Sitges, Carolina; Bornas, Xavier; Llabrés, Jordi; Noguera Batlle, Miquel; Montoya, Pedro (2010-08)
      Article
      Accés restringit per política de l'editorial
      The aim of our study was to characterize brain dynamics of affective modulation of somatosensory processing in chronic pain. We hypothesized that chronic pain patients will show abnormal EEG activity under negative mood ...