Search results for "Modèle"
showing 10 items of 311 documents
Explorations, implantations et diffusions : le "phénomène" campaniforme en France méditerranéenne
2004
In the south-east of France, the first Bell Beaker expansion is manifested by the presence of isolated ceramics but also by a series of settlements established in contact with the indigenous populations. Analysis of the assemblages, their composition and their distribution makes it possible to propose a model of the appearance and development of the Bell Beaker phenomenon but also the probable origin of the elements present in this area.
2500 avant notre ère : l’implantation campaniforme en France méditerranéenne
2013
Around 2 500 BC, drinking beakers with a characteristic pattern appeared in diverse areas of Europe. They are frequently associated with other kinds of materials, like specific ornaments and weapons. This set defines what is called the Bell Beaker phenomenon. In Southern France, more than 600 sites are known. In this very rich European study area, it is possible to study the nature and origin of this phenomenon, and question its poten-tial exogenous components, its modes of establishment and development, and its rela-tionship with local groups that had already settled in the South of France. Consequently, a layout similar to the Greek colonization model of the Mediterranean coast is proposed
Automatic production of three-dimensionnel models by 3D digitization
2012
The manual 3D digitization process is expensive since it requires a highly trained technician who decides about the different views needed to acquire the object model. The quality of the final result strongly depends, in addition to the complexity of the object shape, on the selected viewpoints and thus on the human expertise. Nowadays, the most developed digitization strategies in industry are based on a teaching approach in which a human operator manually determines one set of poses for the ranging device. The main drawback of this methodology is the influence of the operator's expertise. Moreover, this technique does not fulfill the high level requirement of industrial applications which…
Experimental study of Morris-Lecar neuron : design, coupling and interpretation
2015
We present in this manuscript an experimental electronic neuron based on complete Morris-Lecar model without simplifications, able to become an experimental unit tool to study collective association of robust coupled neurons. The circuit design is given in details according to the ionic currents of this model. The experimental results are compared with the theoretical prediction, leading to a good agreement between them, which therefore validates the circuit. We present the different areas according to the bifurcation control parameters, the membrane capacitance and the excitation current. We have highlighted the behavior of the neuron for each parameters zone. A coupling of such neurons is…
Le contrôle des risques bancaires. Une approche historique des enjeux et des résistances lors du changement de référentiel comptable de 2005.
2023
Ce chapitre analyse pourquoi et comment l'adoption des normes comptables internationales dans leur forme initiale aurait conduit à une remise en cause de la pratique de la macro-couverture utilisée par les grandes banques françaises pour gérer leur risque de taux. Plus largement il étudie en quoi cette remise en cause était susceptible d'avoir une incidence sur leur modèle économique et leur politique de crédit ainsi que les résistances, notamment politiques, qui ont été à l'œuvre
Transitions & Accompagnement du changement : Agir ensemble, changer ensemble
2018
International audience; Nous ne pouvons plus nier que les conditions de survie de l'humanité comme de la Vie au sens noble du terme se dégradent chaque jour sur notre planète. Des mouvements d'actions et de recherche proposent des solutions, parfois en tâtonnant, et selon des méthodes inclusives qui ont en commun une approche globale de l'individu, des sociétés, de la biodiversité, des interactions entre tous les éléments des systèmes vivants. Nous imaginerons ici comment échanger autrement des savoirs, biens et services, comment apprendre dans de nouvelles conditions favorisant le développement personnel au sein d'un collectif et de la biodiversité, pour aborder enfin les recherches actuel…
Les Campaniformes dans le sud-est de la France
2004
The term "Bell Beaker", in the strict sense, designates a ceramic beaker form with an S-shaped profile that gives it the shape of an inverted bell. This type of drinking-vessel is characterized by both its very particular pattern of decoration and by the generally skilled execution of that decoration. By extension, the decoration characteristic of these beakers bas allowed the expansion of the category "Bell-Beaker" to include other pottery forms and even other types of decoration showing the same tradition, vvhich probably represent an evolution or reproduction of the original Bell Beaker pattern, The recognition of these objects and their definition as a class date to the nineteenth centu…
Design and modelling a of bimodal camera system
2021
In computer vision, researchers face a challenging concern due to the limited field of view (FoV) when using standard cameras in capturing scenes. This problem of narrow FoV often encountered within applications that involve tasks which are related to the robot vision. Many authors have attempted, in different approaches, to solve this issue by fusing two cameras. However, they failed to improve the registration and fusing errors, where the obtained results still limited and not accurate enough. To deal with this limitation and decrease these errors, we propose a new method of camera calibration based on Interior-Point Optimisation (IPO) algorithm using transformation matrix estimation. Thi…
Morphological characterisation of soil structure in tilled fields: from a diagnosis method to the modelling of structural changes over time
2004
Characterisation of soit structure within the tilled layer of cultivated fields is crucial because the importance of this soil characteristic on the biological, chemical and physical properties of the soil and its repercussions on water cycle, root growth and functioning. We present in this paper a method for field characterisation of soil structure. This method, practised since the 1970s, was designed for field diagnosis of the effects of cropping systems on soil structure. It is based on a stratification of the observation face of a pit dug perpendicular to the direction of tillage and traffic: spatial compartments are distinguished, according to the nature of the mechanical stresses they…
Spatial effects in housing price models : do housing prices capitalize urban development policies in the agglomeration of Dijon (1999) ?
2004
In this article we suppose that the integration of accessibility and neighborhood variables in hedonic housing models doesn't allow to take into account the spatial effects between the housing prices. Using a sample of 1520 transactions of apartments in the urban area of Dijon, we focus on two types of location variables : the distance to the CBD and the distance to several Disadvantaged Districts located in peripheral areas. We detect the presence of a spatial error autocorrelation in the hedonic model indicating that the valuation of the price of an apartment is locally influenced by the prices of the neighboring apartments. Then, we estimate a spatial error model which shows that the loc…