Letteratura scientifica selezionata sul tema "Complexité spatiotemporelle"
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Articoli di riviste sul tema "Complexité spatiotemporelle":
Barragán-Ochoa, Fernando. "La pandémie de coronavirus en Équateur : une lecture spatiotemporelle de l’évolution de la mortalité pendant la première année". L’Espace géographique Tome 51, n. 2 (13 novembre 2023): 121–38. http://dx.doi.org/10.3917/eg.512.0121.
Masson, Eric. "Une ontologie orientée objet pour la modélisation des socio-écosystèmes". Revue Internationale de Géomatique 31, n. 1-2 (gennaio 2022): 199–230. http://dx.doi.org/10.3166/rig31.199-230.
Buffin-Bélanger, Thomas, e André G. Roy. "Vers l’intégration des structures turbulentes de l’écoulement dans la dynamique d’un cours d’eau à lit de graviers". Géographie physique et Quaternaire 54, n. 1 (2 ottobre 2002): 105–17. http://dx.doi.org/10.7202/004776ar.
Ancori, Bernard. "Espace-temps d’un réseau sociocognitif complexe". Nouvelles perspectives en sciences sociales 3, n. 2 (17 aprile 2009): 113–81. http://dx.doi.org/10.7202/602478ar.
Florian GUÉRIN. "L’easyjet-setting de Paris à Berlin". Le tourisme hors des sentiers battus 34, n. 1-2 (15 marzo 2015). http://dx.doi.org/10.7202/1038822ar.
Tesi sul tema "Complexité spatiotemporelle":
Andrade, Thiago. "Évolution spatiotemporelle de la diversité et du fonctionnement d'une guilde de parasitoïdes". Thesis, Rennes 1, 2013. http://www.theses.fr/2013REN1S124/document.
This thesis is an analysis of the spatial and temporal dimensions of the functioning and taxonomic and functional diversity of a guild. In a guild, species exploit the same type of resources; consequently, fundamental ecological niches of guild members are similar and an interspecific competitive relationship is established if shared resources are limiting. Four main questions on the functioning of a guild are addressed: (1) the spatiotemporal scales to which guilds the guild and its exploited resources are structures, (2) the respective weight of environmental filtering and interspecific interactions on the configuration of realized niches of guild members, (3) the strategy of resource exploitation in a guild member facing low resource availability and (4) the impact of climatic context on the structure of a guild and its food web, and the degree of specialisation on resources. The biological model chosen in this study was a cereal aphid parasitoid guild (Hymenoptera: Braconidae: Aphidiinae). Those parasitoids attack aphids (Homoptera: Aphididae) in agroecosystems, which are anthropised environments marked by high disturbance rates and in which host resources are variable in density and in quality. Relative abundance variations in parasitoids and in their hosts were considerable at interregional and interannual scales, but weak at the intra-regional scale. Functional trait divergence in parasitoids was maintained across three regions and two years, and regional and annual environmental contexts influenced guild traits as a whole. In winter, a period marked by low aphid density, the parasitoid Aphidius rhopalosiphi presented contrasted strategies to maximise fitness whilst exploiting Sitobion avenae and Rhopalosiphum padi hosts, but a high degree of ecological specialisation in the field was observed in the presence of a competitive species, Aphidius avenae. This presence was correlated to an increase in winter temperatures
Andrade, Thiago Oliveira. "Évolution spatiotemporelle de la diversité et du fonctionnement d'une guilde de parasitoïdes". Phd thesis, Université Rennes 1, 2013. http://tel.archives-ouvertes.fr/tel-00971811.
Ayyad, Marouane. "Le traitement d'information avec des états chimères optiques". Electronic Thesis or Diss., Université de Lille (2022-....), 2023. http://www.theses.fr/2023ULILR058.
In Greek mythology, a chimera is a fantastic creature whose body parts belong to different animals.By analogy with this mythology, in physics and more particularly in the study of spatially extended discrete complex systems, these chimera states correspond to the coexistence of two opposing spatio-temporal dynamic behaviors.The coexistence of two domains, one coherent and the other incoherent in a chain of coupled non-linear oscillators is the historical example, like the different parts of the body of a chimera.These spatio-temporal self-organizations have been widely studied theoretically and experimentally.However, few studies have been carried out to explore the links between this type of dynamics and cellular automata.These automata, despite their simplicity, have remarkable dynamic properties and, consequently, represent one of the foundations of information theory.To answer this problem, we considered chimera states obtained in a chain of identical coupled optical resonators.These structures were then the subject of quantitative and qualitative analyzes using the same tools as those used to characterize cellular automata.This allowed us to highlight an elementary cellular automaton type dynamic hidden in the evolution of our chimera states.We were then able to deduce a set of properties in terms of computability, opening perspectives towards potential applications for information processing.Subsequently, we used our optical chimera states in the context of recurrent neural networks.This is a new paradigm, which stands out for its great simplicity, speed and essential efficiency in the processing of information.However, the performance of this machine learning technique depends in particular on the design of the reservoir.Our results show that the implementation of our optical chimeric states instead of 'classic' reservoirs can provide a promising architectural alternative to further improve the speed of information processing