Letteratura scientifica selezionata sul tema "Modélisation et calage paramétrique"
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Articoli di riviste sul tema "Modélisation et calage paramétrique":
Bargaoui, Zoubeïda, Hamouda Dakhlaoui e Ahmed Houcine. "Modélisation pluie-débit et classification hydroclimatique". Revue des sciences de l'eau 21, n. 2 (22 luglio 2008): 233–45. http://dx.doi.org/10.7202/018468ar.
Coppens, Adrien, Tom Mens e Mohamed-Anis Gallas. "Modélisation Paramétrique en Réalité Virtuelle". SHS Web of Conferences 82 (2020): 03005. http://dx.doi.org/10.1051/shsconf/20208203005.
Roussel, N., C. Lanos e Z. Toutou. "Remontée d’un anneau de voussoir : modélisation et analyse paramétrique". Revue Française de Géotechnique, n. 104 (2003): 73–79. http://dx.doi.org/10.1051/geotech/2003104073.
Lelièvre, Eva. "Activité professionnelle et fécondité". Articles 16, n. 2 (20 ottobre 2008): 209–36. http://dx.doi.org/10.7202/600614ar.
Lek, S., I. Dimopoulos, M. Derraz e Y. El Ghachtoul. "Modélisation de la relation pluie-débit à l'aide des réseaux de neurones artificiels". Revue des sciences de l'eau 9, n. 3 (12 aprile 2005): 319–31. http://dx.doi.org/10.7202/705255ar.
Ben-Jmaa-Derbel, Houda. "Modélisation d'un écoulement forcé dans une soufflerie. Identification et optimisation paramétrique". Journal Européen des Systèmes Automatisés 40, n. 4-5 (30 giugno 2006): 419–41. http://dx.doi.org/10.3166/jesa.40.419-441.
Lubrano, Michel. "Modélisation bayésienne non linéaire du taux d’intérêt de court terme américain : l’aide des outils non paramétriques". Articles 80, n. 2-3 (24 ottobre 2005): 465–99. http://dx.doi.org/10.7202/011396ar.
Stals, Adeline, Catherine Elsen e Sylvie Jancart. "L’immersion pour l’appréhension des outils de modélisation paramétrique en conception architecturale". SHS Web of Conferences 47 (2018): 01010. http://dx.doi.org/10.1051/shsconf/20184701010.
Robert, C., O. Banton, P. Lafrance e J. P. Villeneuve. "Analyse de sensibilité paramétrique d'un modèle simulant le transport de pesticide dans le sol". Revue des sciences de l'eau 5, n. 2 (12 aprile 2005): 197–210. http://dx.doi.org/10.7202/705128ar.
Sambou, Soussou, Moussé Landing Sane, Issa Leye, Didier Maria Ndione, Seydou Kane e Mamadou Lamine Badji. "Calage et validation de SWAT sur le bassin versant du Bafing (Fleuve Sénégal) en amont de BAFING MAKANA : vers une application à la gestion du barrage de Manantali". Proceedings of the International Association of Hydrological Sciences 384 (16 novembre 2021): 363–66. http://dx.doi.org/10.5194/piahs-384-363-2021.
Tesi sul tema "Modélisation et calage paramétrique":
Brakna, Mohammed. "Sensor and actuator optimal location for dynamic controller design. Application to active vibration reduction in a galvanizing process". Electronic Thesis or Diss., Université de Lorraine, 2023. https://docnum.univ-lorraine.fr/ulprive/DDOC_T_2023_0152_BRAKNA.pdf.
The aims of the present PhD thesis are to determine a model that is both sufficiently accurate and numerically exploitable to propose optimal placement of sensors and actuators for active vibration control in a galvanizing line. A continuous hot-dip galvanizing process consists in covering a metal (here: a steel band) by a protective layer of zinc which avoids the corrosion due to the air. The thickness of this layer must be constant to guarantee the mechanical properties and surface condition of the product. In a galvanizing line, the moving steel strip is heated and then immersed in a liquid zinc bath before being wiped out by nozzles projecting air. The air flow, as well as the rotation of the driving rolls, among other things, creates vibrations affecting the wiping process and thus the regularity of the zinc deposit. Active control is therefore necessary, for example by means of electromagnets placed on either side of the moving steel strip. In a first step, a behavioral model of the steel strip taking into account the presence and propagation of vibrations was obtained by spatial discretization of a partial differential equation. This state space model was validated in simulation and experimentally on a pilot galvanizing line of ArcelorMittal Research in Maizières-lès-Metz. Once this model is established, the objective of the study is to find the optimal placement of sensors, to measure the vibrations of the strip as efficiently as possible, but also of actuators to minimize the amplitude of these vibrations by an appropriate control law. These problems of optimal placement are at the heart of the issues of active vibration control and are found in many fields of application. An optimal placement method based on Gramian maximization has been proposed in order to reduce the impact of disturbances on the system. Different control strategies have been considered such as (i) observed state feedback based on Kalman filter and LQ regulator; and (ii) extended observed state feedback to improve the results by also taking into account the disturbance estimation provided by a PI (proportional-integral) observer. Simulation and experimental results illustrate the thesis contributions
Gardet, Caroline. "Modélisation multi-échelles de réservoir et calage d'historique de production". Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066645/document.
In this manuscript, we propose two multiscale algorithms for the simulation of geological reservoir models.The first algorithm is based on two-points statistics methods. It is based upon the sequential Gaussian simulation with a secondary variable. In our multiscale approach, the scale of the secondary variable is considered as a second scale of coarser resolution. It represents the trend or the average of the primary variable. In the context of history-matching, it can be shown that adjusting the properties of the geological model at the coarse scale is more effective than doing the same at the fine scale provided a suitable parameterization technique is used. Our method holds for both continuous and discrete variables. The second algorithm is rooted in texture synthesis techniques developed in computer graphics and modified to cope with reservoir simulation. This is a multipoint simulation algorithm. As such, it requires the use of a training image. It permits to simulates complex geological objects like channels or networks of fractures. However, as all multipoint algorithms, it requires significant computation times. We show how the introduction of an intermediate scale reduces the computation time and improves the reproduction of large structures. We also test two techniques to further reduce the computation time: the partial scan of the training image and the preliminary organization of the information extracted from this image
Gardet, Caroline. "Modélisation multi-échelles de réservoir et calage d'historique de production". Electronic Thesis or Diss., Paris 6, 2014. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2014PA066645.pdf.
In this manuscript, we propose two multiscale algorithms for the simulation of geological reservoir models.The first algorithm is based on two-points statistics methods. It is based upon the sequential Gaussian simulation with a secondary variable. In our multiscale approach, the scale of the secondary variable is considered as a second scale of coarser resolution. It represents the trend or the average of the primary variable. In the context of history-matching, it can be shown that adjusting the properties of the geological model at the coarse scale is more effective than doing the same at the fine scale provided a suitable parameterization technique is used. Our method holds for both continuous and discrete variables. The second algorithm is rooted in texture synthesis techniques developed in computer graphics and modified to cope with reservoir simulation. This is a multipoint simulation algorithm. As such, it requires the use of a training image. It permits to simulates complex geological objects like channels or networks of fractures. However, as all multipoint algorithms, it requires significant computation times. We show how the introduction of an intermediate scale reduces the computation time and improves the reproduction of large structures. We also test two techniques to further reduce the computation time: the partial scan of the training image and the preliminary organization of the information extracted from this image
Boutin, Samuel. "Amplificateur paramétrique Josephson : limite quantique, modélisation et caractérisation". Mémoire, Université de Sherbrooke, 2015. http://hdl.handle.net/11143/6984.
M'Sirdi, Kouider Nacer. "Modélisation paramétrique adaptative et application à l'analyse spectrale". Grenoble INPG, 1988. http://www.theses.fr/1988INPG0088.
Komine, Vadim. "Etude d'un oscillateur paramétrique à quartz : conception, modélisation et réalisation". Besançon, 2003. http://www.theses.fr/2003BESA2006.
The phenomenon of parametric resonance has been theoretically studied just from the beginning of the twentieth century. Its applications in electronics are restricted to low noise HF amplifiers. In this work the application of parametric resonance is extented to the case of RF oscillators. The first chapter is dedicated to a theoretical review and principles of operation of existing parametric devices. It it shown how an electronic parametric oscillator can work when pumping a variable reactance and how this can be applied to quartz crystal oscillators. This type of oscillator is first analysed before being simulated. This theoretical approach is then applied to a 10 MHz quartz crystal resonator inserted in a parametric loop which is modulated with a pump signal whose frequency is twice the loop resonant frequency. Experimental results of this Parametric Quartz Crystal Oscillator (PXO) are discussed in the last chapter. Resulting data are compared with the theoretical ones. The PXO is also caracterized especially in terms of phase noise and frequency stability. Its encouraging features open up possibilities of future developments described in the conclusion
Gillet, Mathieu. "Analyse de systèmes intumescents sous haut flux : modélisation et identification paramétrique". Phd thesis, Université d'Angers, 2009. http://tel.archives-ouvertes.fr/tel-00465240.
Taramasco, Ollivier. "Modélisation non paramétrique du comportement des cours boursiers". Grenoble 1, 1993. http://www.theses.fr/1993GRE10038.
Fischer, Richard. "Modélisation de la dépendance pour des statistiques d'ordre et estimation non-paramétrique". Thesis, Paris Est, 2016. http://www.theses.fr/2016PESC1039/document.
In this thesis we consider the modelling of the joint distribution of order statistics, i.e. random vectors with almost surely ordered components. The first part is dedicated to the probabilistic modelling of order statistics of maximal entropy with marginal constraints. Given the marginal constraints, the characterization of the joint distribution can be given by the associated copula. Chapter 2 presents an auxiliary result giving the maximum entropy copula with a fixed diagonal section. We give a necessary and sufficient condition for its existence, and derive an explicit formula for its density and entropy. Chapter 3 provides the solution for the maximum entropy problem for order statistics with marginal constraints by identifying the copula of the maximum entropy distribution. We give explicit formulas for the copula and the joint density. An application for modelling physical parameters is given in Chapter 4.In the second part of the thesis, we consider the problem of nonparametric estimation of maximum entropy densities of order statistics in Kullback-Leibler distance. Chapter 5 presents an aggregation method for probability density and spectral density estimation, based on the convex combination of the logarithms of these functions, and gives non-asymptotic bounds on the aggregation rate. In Chapter 6, we propose an adaptive estimation method based on a log-additive exponential model to estimate maximum entropy densities of order statistics which achieves the known minimax convergence rates. The method is applied to estimating flaw dimensions in Chapter 7
Picard, Marie-Hélène. "Comportement et modélisation p-y des argiles sensibles du Québec : études expérimentale et paramétrique". Thesis, Université Laval, 2012. http://www.theses.ulaval.ca/2012/28732/28732.pdf.