MOREAU , Clément

This thesis deals with mathematical aspects of controllability of micro-swimming robots and of motility of micro-filaments, with ramifications in control theory and modeling. The first part presents our control theory results. On the one hand, we state a necessary condition of local controllability for a particular class of systems with two...

This paper focuses on the control theory aspects of the dynamics of a magnetized micro-swimmer robot model made of three rigid links. Under generic assumptions on the parameters, we show that the control system which describes the swimmer dynamics is locally controllable in small time around its equilibrium position (the straight line), but...

Pierrelatte (26), Les Tomples - Du Néolithique sous la centrale

L'habitat néolithique du IV° millénaire dans le sud de la France : étude de cas, Cazan à Vernègues (Bouches-du-Rhône)

An excavation conducted in 2008 in Saint-Laurent-la-Conche (Loire) uncovered a small oval enclosure dating to the Middle Neolithic. The pottery can be attributed to a late phase of the Néolithique moyen Bourguignon (NMB), with some elements of the late Chasséen culture. This structure, 9.5 m wide and 24 m long, with an opening at one end, can...

Selected fuel, rotten posts and glassy amorphous enigmatic residue: charcoal analysis of a structured dwelling site from the middle Neolithic in Provence (Cazan-Les clos du Moulin, Vernègues, Bouches-du-Rhône)

Un coteau bien orienté à Anse (Rhône). Sépultures de l'âge du Bronze ancien inédites dans la vallée de la Saône aval

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The inertialess fluid-structure interaction of active and passive inextensible filaments and slender-rods are central in many processes in nature, from the dynamics of semi-flexible polymers to cy-toskeletal filaments, flagella and artificial swimmers, covering a wide range of scales. The nonlinear coupling between the geometry of deformation...

In southern France, for the Chassey culture, our knowledge of land use dynamics was until then mainly restricted to cave occupations, massive enclosures and, in alluvial plains only, large open-air sites without any compelling trace of habitat. For this period, the only known buildings were then unconvincing and scattered on the territory. A...

International audience

In 2013, an excavation near Vernègues (Bouches-du Rhône), " Cazan Le-Clos-du-Moulin", revealed a large occupation site dated to the Middle Neolithic (Late Chassey culture). The area excavated is located in the centre of a small valley which joins the valley of the Durance just to the north. While no occupation layers were uncovered during the...

We consider affine control systems with two scalar controls, such that one control vector field vanishes at an equilibrium state. We state two necessary conditions of local controllability around this equilibrium, involving the iterated Lie brackets of the system vector fields, with controls that are either bounded, small in L ∞ or small in W...

We consider control-affine systems with two scalar controls, such that one control vector field vanishes at an equilibrium state. We state two necessary conditions of local controllability around this equilibrium, involving the iterated Lie brackets of the system vector fields, with controls that are either bounded, small in L ∞ or small in W...

— In this paper, we focus on a variant of a 3-link magnetic microswimmer which consists of three rigid magnetized segments connected by two torsional springs. In particular, we assume that one of the springs is twisted so that the swimmer is not aligned at rest. By acting on it with an external magnetic field, the swimmer twists and moves...

In the above mentioned note (hal-01145537, arXiv:1506.05918, published in IEEE Trans. Autom. Cont., 2017), the first and fourth authors proved a local controllability result around the straight configuration for a class of magneto-elastic micro-swimmers.That result is weaker than the usual small-time local controllability (STLC), and the...

Diversités et récurrences de l'habitat ouvert chasséen dans le sud de la France

Le projet de construction immobilière des «Rivaux», sur la commune de Peyrolles-en-Provence, a entraîné la réalisation d'une opération de diagnostic menée en octobre 2017 sous la direction de F. Conche (Inrap). Les résultats de ces sondages d'évaluation et la proximité immédiate de la villa antique des Rivaux, identifiée dans les années1980...

L'architecture danubienne en région Centre : le passage du Néolithique ancien au début du Néolithique moyen I

International audience

Installation et réinstallation des Chasséens dans le vallon de Cazan (Vernègues, Bouches-du-Rhône)

À la fin de l'année 2017, au lieu-dit "Les Tomples", suite à un diagnostic réalisé sous la responsabilité de C. Chatellier (Inrap) (Chatellier 2017), une fouille a été exécutée avant l'extension d'une usine métallurgique de l'entreprise Rozier sur près de 4000 m². Au sommet des alluvions holocènes de la plaine tricastine, cette opération a...

L'opération archéologique préventive menée au lieu-dit « Le Prieuré », sur la commune de Villepreux, est intervenue préalablement à un projet de création de pavillons et de logements collectifs par la société Kaufman & Broad. Ce projet avait entraîné la réalisation, en novembre 2012, d'un diagnostic archéologique1 dont les résultats ont motivé...