{ "items" : [ { "id" : "http://www.idref.fr/218582366/id" "properties" : { "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" : [ "http://purl.org/vocab/frbr/core#Work", "http://rdaregistry.info/Elements/c/C10001" ] , "http://id.loc.gov/vocabulary/relators/ths" : [ "http://www.idref.fr/076928241/id", "http://www.idref.fr/077276027/id" ] , "http://id.loc.gov/vocabulary/relators/aut" : [ "http://www.idref.fr/13393800X/id" ] , "http://www.w3.org/2004/02/skos/core#altLabel" : [ "Complexit\u00E9 orbitale et dynamique Hamiltonienne" ] , "http://purl.org/dc/elements/1.1/subject" : [ "Syst\u00E8mes hamiltoniens", "Ondelettes", "Th\u00E8ses et \u00E9crits acad\u00E9miques", "Galaxies", "Fonctions de corr\u00E9lation", "\u00C9toiles -- Orbites" ] , "http://www.w3.org/2004/02/skos/core#prefLabel" : [ "Orbital complexity in Hamiltonian dynamics" ] , "http://purl.org/dc/terms/language" : [ "http://lexvo.org/id/iso639-3/eng" ] , "http://purl.org/dc/terms/subject" : [ "http://www.idref.fr/027253139/id", "http://www.idref.fr/027767574/id", "http://www.idref.fr/027296369/id", "http://www.idref.fr/027492931/id", "http://www.idref.fr/027796507/id", "http://www.idref.fr/031133843/id", "http://www.idref.fr/027351416/id" ] , "http://purl.org/dc/elements/1.1/title" : [ "Orbital complexity in Hamiltonian dynamics" ] , "http://id.loc.gov/vocabulary/relators/dgg" : [ "http://www.idref.fr/026404540/id", "http://www.idref.fr/131056549/id" ] , "http://www.w3.org/2004/02/skos/core#note" : [ "The monitoring of physical phenomena (often) rests on a mapping of an observable as a function of time. Such time series encode basic information about the state of the system under study. In this thesis, we build on this concept to explore the intricate evolution of gravitational Hamiltonian systems. We treat the phase-space coordinates of celestial bodies as signals which we then analyze using processing techniques, such as autocorrelation identification and wavelet transforms. We consider in turn the large-scale dynamics of galaxies, and the internal dynamics of dense stellar clusters. [...]", "L\u2019observation d\u2019un ph\u00E9nom\u00E8ne physique s\u2019appuie en g\u00E9n\u00E9ral sur l\u2019\u00E9volution d\u2019une observable en fonction du temps. Une telle s\u00E9rie temporelle contient les informations de base sur l\u2019\u00E9tat du syst\u00E8me \u00E9tudi\u00E9. Dans cette th\u00E8se, nous exploitons ce concept afin d\u2019explorer l\u2019\u00E9volution dynamique complexe qui peut avoir lieu dans les syst\u00E8mes autogravitants Hamiltoniens. Nous traitons les coordonn\u00E9es dans l\u2019espace des phases des corps c\u00E9lestes comme des signaux, que nous analysons par la suite en utilisant diff\u00E9rentes m\u00E9thodes de traitement du signal, plus particuli\u00E8rement la fonction d\u2019autocorr\u00E9lation et la transform\u00E9e d\u2019ondelettes. Dans notre analyse nous consid\u00E9rons tour \u00E0 tour la dynamique \u00E0 grande \u00E9chelle des galaxies et celle, interne, des amas stellaires denses." ] , "http://purl.org/dc/elements/1.1/type" : [ "Text" ] , "http://iflastandards.info/ns/isbd/elements/P1001" : [ "http://iflastandards.info/ns/isbd/terms/contentform/T1009" ] , "http://rdaregistry.info/Elements/w/P10219" : [ "2008" ] , "http://rdaregistry.info/Elements/u/P60049" : [ "http://rdaregistry.info/termList/RDAContentType/1020"] } } }