Exploració per tema "Dynamics"
Ara es mostren els items 80-99 de 154
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A la recerca de l'estabilitat efectiva dels asteroids trojans : algunes idees constructives de tècniques KAM sense ssar coordenades acció-angle
(2000)
Text en actes de congrés
Accés obertXerrada pel Seminari de Sistemes Dinamics UB-UPC. Barcelona, dimecres 19 de gener de 2000. Els trojans son una familia d'asteroids amb orbites situades no molt lluny del punt $L_5$ del sistema Sol-Jupiter. Si integrem ... -
Lagrangian coherent structures
(Universitat Politècnica de Catalunya, 2015-05)
Treball Final de Grau
Accés obertReal-life mechanical systems can usually be modeled as non-linear, non-periodic and non-autonomous dynamical systems. It is very important to have different tools to study these systems, and there are many classical ... -
Le traitement de l'incertitude dans les perspectives démographiques
(Institut d'estadística de Catalunya, 1999)
Article
Accés obertOften the predicted trends are extrapolations of trends observed before the projection's initial date, while reality may present an unexpected return of past trends or irregularities. Uncertainty being related to the ... -
Lift off and turbidity currents in the environment
(Institute of Thermomechanics, Academy of Sciences of the Czech Republic, 2014)
Comunicació de congrés
Accés obertThis contribution presents an experimental investigation on the behaviour of sediments in a turbulent boundary layer flow, it compares the energy and vorticity needed to generate a turbidity current and the zero mean ... -
Liquefaction-induced flow-like landslides: the case of Valarties (Spain)
(2023-01)
Article
Accés obertThis paper examines a flowslide involving a glacial deposit of low-plasticity silty sand triggered by a karstic spring after a rainfall period. The work aims at explaining the triggering, propagation and kinematics of ... -
Mathematical modelling of tumour growth in vitro
(Universitat Politècnica de Catalunya, 2017-07)
Projecte Final de Màster Oficial
Accés restringit per decisió de l'autorIt is now widely accepted that cells are mechanically integrated structures which dynamically respond to mechanical cues. Tumours are no exception to that rule but still little is known on how this mechano-transduction is ... -
Mesoscopic Segregation of Excitation and Inhibition in a Brain Network Model
(2015-02-09)
Article
Accés obertNeurons in the brain are known to operate under a careful balance of excitation and inhibition, which maintains neural microcircuits within the proper operational range. How this balance is played out at the mesoscopic ... -
Mixed dynamics of two-dimensional reversible maps with a symmetric couple of quadratic homoclinic tangencies
(American Institute of Mathematical Sciences, 2018-09)
Article
Accés obertWe study dynamics and bifurcations of 2-dimensional reversible maps having a symmetric saddle fixed point with an asymmetric pair of nontransversal homoclinic orbits (a symmetric nontransversal homoclinic figure-8). We ... -
Modeling nanosized single molecule objects: dendronized polymers adsorbed onto mica
(2015-02-19)
Article
Accés obertWe attempt to provide direct evidence for the suggested behavior of dendronized polymers as molecular objects (i.e., single shape persistent macromolecules). For this purpose, the microscopic structure of dendronized ... -
Models algebraics en filogenètica
(2005)
Article
Accés obertEn aquest article fem una introducci´o a les aplicacions de la geometria algebraica en filogen`etica. Gr`acies a qu`e gran part dels models evolutius usats en filogen`etica corresponen a varietats algebraiques, l’ideal ... -
Molecular dynamic in binary mixtures and polymer blends with large difference in glass transition temperatures of the two components: A critical review
(2019-09-11)
Article
Accés obertThe dynamics in highly asymmetric mixtures with large difference in Tg of the two components are complex. At low values of the lower-Tg2 component only the a1-relaxation and its Tga1 were found together with a fast relaxation. ... -
Motion close to the hopf bifurcation of the vertical family of periodic orbits of L^4
(2003)
Article
Accés obertThe paper deals with different kinds of invariant motions (periodic orbits, 2D and 3D invariant tori and invariant manifolds of periodic orbits) in order to analyze the Hamiltonian direct Hopf bifurcation that takes place ... -
Motion near the transition to complex instability: some examples
(1997)
Article
Accés obertComplex instability is a generic kind of instability in Hamiltonian systems with three degrees of freedom. In this work, some examples of such instability are shown, together with a numerical analysis of the dynamics ... -
Multi-electron correlations in the emission of coherent extreme-ultraviolet light
(2021-05-13)
Comunicació de congrés
Accés obert -
Non-integrability of some few body problems in two degrees of freedom
(2008-11-16)
Article
Accés obertThe basic theory of Differential Galois and in particular Morales--Ramis theory is reviewed with focus in analyzing the non--integrability of various problems of few bodies in Celestial Mechanics. The main theoretical ... -
Non-linear dynamics and alternating ‘flip’ solutions in ferrofluidic Taylor-Couette flow
(2018-04-15)
Article
Accés obertThis study treats with the influence of a symmetry-breaking transversal magnetic field on the nonlinear dynamics of ferrofluidic Taylor-Couette flow – flow confined between two concentric independently rotating cylinders. ... -
Nonlinear complexification of periodic orbits in the generalized Landau scenario
(2022-02)
Article
Accés obertWe have found a way for penetrating the space of the dynamical systems towards systems of arbitrary dimension exhibiting the nonlinear mixing of a large number of oscillation modes through which extraordinarily complex ... -
Nonlinear dynamics in an extended neighbourhood of the translunar equilibrium point
(1995)
Article
Accés obert -
Nonlinear estimation of synaptic conductances via piecewise linear systems
(Birkhäuser Basel, 2017)
Comunicació de congrés
Accés obertThis volume contains extended abstracts outlining selected talks and other selected presentations given by participants throughout the -
Numerical computation of normal forms around some periodic orbits of the restricted three body problem
(1997)
Article
Accés obertIn this paper we introduce a general methodology for computing (numerically) the normal form around a periodic orbit of an autonomous analytic Hamiltonian system. The process follows two steps. First, we expand the ...