Дисертації з теми "Probabilistic inversions"
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Ознайомтеся з топ-15 дисертацій для дослідження на тему "Probabilistic inversions".
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Fu, Shuai. "Inversion probabiliste bayésienne en analyse d'incertitude." Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-00766341.
Повний текст джерелаArnst, Maarten. "Inversion of probabilistic models of structures using measured transfer functions." Châtenay-Malabry, Ecole centrale de Paris, 2007. http://www.theses.fr/2007ECAP1037.
Повний текст джерелаThe aim of this thesis is to develop a methodology for the experimental identification of probabilistic models for the dynamical behaviour of structures. The inversion of probabilistic structural models with minimal parameterization, introduced by Soize, from measured transfer functions is in particular considered. It is first shown that the classical methods of estimation from the theory of mathematical statistics, such as the method of maximum likelihood, are not well-adapted to formulate and solve this inverse problem. In particular, numerical difficulties and conceptual problems due to model misspecification are shown to prohibit the application of the classical methods. The inversion of probabilistic structural models is then formulated alternatively as the minimization, with respect to the parameters to be identified, of an objective function measuring a distance between the experimental data and the probabilistic model. Two principles of construction for the definition of this distance are proposed, based on either the loglikelihood function, or the relative entropy. The limitation of the distance to low-order marginal laws is demonstrated to allow to circumvent the aforementioned difficulties. The methodology is applied to examples featuring simulated data and to a civil and environmental engineering case history featuring real experimental data
Diebel, James Richard. "Bayesian image vectorization : the probabilistic inversion of vector image rasterization /." May be available electronically:, 2008. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.
Повний текст джерелаSpikes, Kyle Thomas. "Probabilistic seismic inversion based on rock-physics models for reservoir characterization /." May be available electronically:, 2008. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.
Повний текст джерелаShigapov, Renat [Verfasser], and T. [Akademischer Betreuer] Bohlen. "Probabilistic waveform inversion: Quest for the law / Renat Shigapov ; Betreuer: T. Bohlen." Karlsruhe : KIT-Bibliothek, 2019. http://d-nb.info/1179963989/34.
Повний текст джерелаArnst, Maarten. "Inversion de modèles probabilistes de structures à partir de fonctionsde transfert expérimentales." Phd thesis, Ecole Centrale Paris, 2007. http://tel.archives-ouvertes.fr/tel-00238573.
Повний текст джерелаKozlovskaya, E. (Elena). "Theory and application of joint interpretation of multimethod geophysical data." Doctoral thesis, University of Oulu, 2001. http://urn.fi/urn:isbn:9514259602.
Повний текст джерелаBen, Hmida Sahar. "Inversion des formes d'ondes LiDAR pour l'estimation des caractéristiques des cultures et des forêts par des techniques probabilistes et variationnelles." Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30303/document.
Повний текст джерелаThe use of LiDAR in remote sensing allows a precise description of the vegetation cover architecture. The aim of this thesis is the development of LiDAR data inversion approaches using physical and statistical signal modeling in order to estimate the biophysical properties of dominant crops (wheat, maize) of the South-West of France and a forest cover in China. The work firstly focused on estimating LAI and crop height by small footprint LiDAR waveforms inversion. A realistic crop waveform simulations database is performed using the Radiative Transfer Model (MTR) DART. The inversion consists in using the Look up Table technique which consists of looking for the closest simulation to the actual observation. The second inversion approach focused on LAI profile estimation of the forest trees. A variational approach to estimate LAI by waveform inversion is proposed. It relies on a simplified MTR and LAI profile smoothing technique based on Markov chains. The Bayesian formulation of the problem leads us to a non-linear cost function. It is minimized using a new multi-scale gradient technique. The developed approaches show clearly their performance by applying them to real crop data (corn and wheat) and forest
Berrada, Mohamed. "Une approche variationnelle de l'inversion : de la recherche locale à la recherche globale par carte topologique : application en inversion géoacoustique." Paris 6, 2008. http://www.theses.fr/2008PA066016.
Повний текст джерелаBletery, Quentin. "Analyse probabiliste et multi-données de la source de grands séismes." Thesis, Nice, 2015. http://www.theses.fr/2015NICE4092/document.
Повний текст джерелаEarthquakes are the results of rapid slip on active faults loaded in stress by the tectonic plates motion. It is now establish - at least for large earthquakes - that the distribution of this rapid slip along the rupturing faults is heterogeneous. Imaging the complexity of such slip distributions is one the main challenges in seismology because of the potential implications on understanding earthquake genesis and the associated possibility to better anticipate devastating shaking and tsunami. To improve the imaging of such co-seismic slip distributions, three axes may be followed: increase the constraints on the source models by including more observations into the inversions, improve the physical modeling of the forward problem and improve the formalism to solve the inverse problem. In this PhD thesis, we explore these three axes by studying two recent major earthquakes: the Tohoku-Oki (Mw 9.0) and Sumatra-Andaman (Mw 9.1-9.3) earthquakes, which occured in 2011 and 2004 respectively
Volentik, Alain C. M. "Tephra transport, sedimentation and hazards." [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0002949.
Повний текст джерелаPlessis, Sylvain. "Modélisation probabiliste pour l'étude de l'influence des ions sur la composition des espèces neutres dans l'atmosphère de Titan : Inversion bayésienne de spectres de masse INMS et représentation des recombinaisons dissociatives par distributions de Dirichlet imbriquées." Paris 11, 2010. http://www.theses.fr/2010PA112129.
Повний текст джерелаTitan's high atmosphere neutral composition has been infered from CASSINI INMS ionic mass spectra inversion and by coupled models. We used Bayesian Monte Carlo methods to perform ionic mass spectra inversion with uncertainty propagation. We have shown that most of the neutral species are not constrained by this method. In a second time, we studied the dissociative recombination (DR) to improve the model description of this process. Being only partially characterized by experiments, knowledge of this process adopts a probabilistic tree structure. Nested Dirichlet distributions are efficient in representing such structures. We could therefore build a comprehensive database of DR relative to Titan, integrating all pieces of information. First results showed that a complete description of DR is enough to account for the densities of some neutral species, in particular nitrogen-bearing species
Hadidi, Rambod. "Generic probabilistic inversion technique for geotechnical and transportation engineering applications." 2007. http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.13464.
Повний текст джерела"Use of probabilistic inversion to model qualitative expert input when selecting a new nuclear reactor technology." THE GEORGE WASHINGTON UNIVERSITY, 2008. http://pqdtopen.proquest.com/#viewpdf?dispub=3297448.
Повний текст джерелаSagar, Stephen. "Inversion of remote sensing data in a shallow water environment using a trans-dimensional probabilistic framework." Phd thesis, 2015. http://hdl.handle.net/1885/150201.
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