Дисертації з теми "EDA solutions"
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SASSONE, ALESSANDRO. "Integration-aware Modeling, Simulation and Design Techniques for Smart Electronic Systems." Doctoral thesis, Politecnico di Torino, 2015. http://hdl.handle.net/11583/2597354.
Повний текст джерелаFahlaoui, Tarik. "Réduction de modèles et apprentissage de solutions spatio-temporelles paramétrées à partir de données : application à des couplages EDP-EDO." Thesis, Compiègne, 2020. http://www.theses.fr/2020COMP2535.
Повний текст джерелаIn this thesis, an algorithm for learning an accurate reduced order model from data generated by a high fidelity solver (HF solver) is proposed. To achieve this goal, we use both Dynamic Mode Decomposition (DMD) and Proper Orthogonal Decomposition (POD). Anomaly detection, during the learning process, can be easily done by performing an a posteriori spectral analysis on the reduced order model learnt. Several extensions are presented to make the method as general as possible. Thus, we handle the case of coupled ODE/PDE systems or the case of second order hyperbolic equations. The method is also extended to the case of switched control systems, where the switching rule is learnt by using an Artificial Neural Network (ANN). The reduced order model learnt allows to predict time evolution of the POD coefficients. However, the POD coefficients have no interpretable meaning. To tackle this issue, we propose an interpretable reduction method using the Empirical Interpolation Method (EIM). This reduction method is then adapted to the case of third-order tensors, and combining with the Kernel Ridge Regression (KRR) we can learn the solution manifold in the case of parametrized PDEs. In this way, we can learn a parametrized reduced order model. The case of non-linear PDEs or disturbed data is finally presented in the opening
Barrasso, Adrien. "Decoupled mild solutions of deterministic evolution problemswith singular or path-dependent coefficients, represented by backward SDEs." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLY009/document.
Повний текст джерелаThis thesis introduces a new notion of solution for deterministic non-linear evolution equations, called decoupled mild solution.We revisit the links between Markovian Brownian Backward stochastic differential equations (BSDEs) and parabolic semilinear PDEs showing that under very mild assumptions, the BSDEs produce a unique decoupled mild solution of some PDE.We extend this result to many other deterministic equations such asPseudo-PDEs, Integro-PDEs, PDEs with distributional drift or path-dependent(I)PDEs. The solutions of those equations are represented throughBSDEs which may either be without driving martingale, or drivenby cadlag martingales. In particular this thesis solves the so calledidentification problem, which consists, in the case of classical Markovian Brownian BSDEs, to give an analytical meaning to the second component Z ofthe solution (Y,Z) of the BSDE. In the literature, Y generally determinesa so called viscosity solution and the identification problem is only solved when this viscosity solution has a minimal regularity.Our method allows to treat this problem even in the case of general (even non-Markovian) BSDEs with jumps
Dumas, Thomas. "Existence de solutions pour des équations apparentées au 1 Laplacien anisotrope." Thesis, Cergy-Pontoise, 2018. http://www.theses.fr/2018CERG0963/document.
Повний текст джерелаWe study anisotropic p-Laplacian equations when some components of p are equal to 1
Micaux, Bertrand. "Flots stochastiques d’opérateurs dirigés par des bruits gaussiens et poissonniens." Paris 11, 2007. http://www.theses.fr/2007PA112218.
Повний текст джерелаIn the article Integration of Brownian vector fields (2002), Le Jan and Raimond studied SDEs whose coefficients were not necessarily smooth. Under certain assumptions of symmetry, they showed that these equations admitted strong solutions which were stochastic flows of operators. They called them strong statistical solutions of the SDEs. The aim of this thesis is to extend those results to the situation where a Poisson point process is added to the SDEs. We establish an existence and uniqueness theorem for stochastic flows of operators driven by these SDEs using Wiener-Poisson chaos expansion techniques. We recall basic facts from Wiener-Poisson chaos theory and the links between semigroups, generators and symmetric forms that we need in our study. In the purely Brownian case, we give another presentation of the proof of positivity of solutions to fill some gaps in the initial one. This new account involves stochastic integrals along the paths of a Hunt process. In the Poisson case, we introduce a “star cloud exploration” model to illustrate our general framework. Here the jumps of a Poisson process give rise to discontinuities in the paths of a stochastic flow of maps. The resulting flow checks an SDE which comes within our framework and can be solved under weaker assumptions than those required to build the flow of maps. This way, we get a generalization of our model
Goreac, Dan. "Problèmes de contrôle stochastiques : contrôle sous contrainte, contrôlabilité et application à la réassurance." Phd thesis, Université de Bretagne occidentale - Brest, 2007. http://tel.archives-ouvertes.fr/tel-00258044.
Повний текст джерела(1) Contrôle stochastique non borné sous contraintes d'état.
Nous étudions une condition nécessaire sous laquelle les solutions d'une EDS régie par un processus de contrôle non-borné restent dans un voisinage arbitrairement petit d'un ensemble donné de contraintes.
(2) Contrôlabilité approchée pour des équations différentielles linéaires avec bruit contrôlé.
Dans cette deuxième partie, on s'intéresse à la propriété de contrôlabilité approchée pour une EDS linéaire. Nous proposons une généralisation de la condition de Kalman pour le cas général où le contrôle agit sur le bruit.
(3) Contrôlabilité approchée pour des équations différentielles linéaires en dimension infinie.
La troisième partie est dédiée à l'étude de la propriété de contrôlabilité approchée pour un système stochastique linéaire dans un espace de Hilbert réel et séparable. En particulier, nous montrons l'existence et unicité pour la solution de l'EDSR duale lorsque les opérateurs qui agissent sur Y et Z sont non-bornés. Dans le cas d'un générateur infinitésimal d'un semi-groupe exponentiellement stable, nous montrons que le test généralisé de Hautus donne une condition nécessaire pour la contrôlabilité approchée.
(4) Assurance, réassurance et paiement de dividendes.
Nous introduisons un modèle d'assurance qui permet la réassurance et le paiement des dividendes. Notre modèle prend en compte plusieurs contrats homogènes ainsi que la législation européenne en vigueur concernant les provisions des sociétés d'assurance.
Ntovoris, Eleftherios. "Contribution à la théorie des EDP non linéaires avec applications à la méthode des surfaces de niveau, aux fluides non newtoniens et à l'équation de Boltzmann." Thesis, Paris Est, 2016. http://www.theses.fr/2016PESC1057/document.
Повний текст джерелаThis thesis consists of three different and independent chapters, concerning the mathematical study of three distinctive physical problems, which are modelled by three non- linear partial differential equations. These equations concern the level set method, the theory of incompressible flow of non-Newtonian materials and the kinetic theory of rare- fied gases. The first chapter of the thesis concerns the dynamics of moving interfaces and contains a rigorous justification of a numerical procedure called re-initialization, for which there are several applications in the context of the level set method. We apply these results for first order level set equations. We write the re-initialization procedure as a splitting algorithm and study the convergence of the algorithm using homogenization techniques in the time variable. As a result of the rigorous analysis, we are also able to introduce a new method for the approximation of the distance function in the context of the level set method. In the case where one only looks for a level set function with gradient bounded from below near the zero level, we propose a simpler approximation. In the general case where the zero level might present changes of topology we introduce a new notion of relaxed limits. In the second chapter of the thesis, we study a free boundary problem arising in the study of the flow of an incompressible non-Newtonian material with Drucker-Prager plasticity on an inclined plane. We derive a subdifferential equation, which we reformulate as a variational problem containing a term with linear growth in the gradient variable, and we study the problem in an unbounded domain. We show that the equations are well posed and satisfy some regularity properties. We are then able to connect the physical parameters with the abstract problem and prove some quantitative properties of the solution. In particular, we show that the solution has compact support and the support is the free boundary. We also construct explicit solutions of an ordinary differential equation, which we use to estimate the free boundary. The last chapter of the thesis is dedicated to the study of infinite energy solutions of the homogeneous Boltzmann equation with Maxwellian molecules. We obtain new results concerning the existence of eternal solutions in the space of probability measure with infinite energy (i.e. the second order moment is infinite). These solutions describe the asymptotic behaviour of other infinite energy solutions but could also be useful in the study of intermediate asymptotic states of solutions with finite but arbitrarily large energy. We use harmonic analysis tools to study the equation, where the velocity variable is expressed in the Fourier space. Finally, a logarithmic scaling of the time variable allows to determine the correct asymptotic scaling of the solutions
Collion, Stéphane. "Fonctions critiques et équations aux dérivées partielles elliptiques sur les variétés riemanniennes compactes." Paris 6, 2004. https://tel.archives-ouvertes.fr/tel-00007685.
Повний текст джерелаJacob, Jérome. "Modélisation et simulation dynamique de procédés de traitement des eaux de type biofiltre : traitement de systèmes d'équations différentielles partielles et algébriques (EDPA)." Toulouse, INPT, 1994. http://www.theses.fr/1994INPT038G.
Повний текст джерелаCollion, Stephane. "Fonctions critiques et équations aux dérivées partielles elliptiques sur les variétés riemanniennes compactes." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2004. http://tel.archives-ouvertes.fr/tel-00007685.
Повний текст джерелаDo, Thu Trang. "Electron deficient solution processable organic semiconductors for optoelectronic devices." Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/127140/2/Thu_Trang_Do_Thesis.pdf.
Повний текст джерелаKhayamian, Chiara. "Periodic and Quasi-Periodic Solutions of some Non-Linear Hamiltonian PDE's." Thesis, Avignon, 2017. http://www.theses.fr/2017AVIG0418/document.
Повний текст джерелаThe aim of this thesis is the research of periodic and quasi-periodic solutions for some non-linear hamiltonian PDEs
Taghipoor, Masoomeh. "MODÉLISATION DU TRANSPORT, DE LA DÉGRADATION ET DE L'ABSORPTION DES ALIMENTS DANS L'INTESTIN GRÊLE." Phd thesis, Université François Rabelais - Tours, 2012. http://tel.archives-ouvertes.fr/tel-00762216.
Повний текст джерелаMatsson, Erik, Gustav Dahllöf, and Julius Nilsson. "Business to Business - Electronic Invoice Processing : A report on the challenges, solutions and outcomes for companies switching from manual to electronic invoice handling." Thesis, Högskolan i Jönköping, Internationella Handelshögskolan, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-26793.
Повний текст джерелаBigorgne, Léo. "Propriétés asymptotiques des solutions à données petites du système de Vlasov-Maxwell." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS164/document.
Повний текст джерелаThe purpose of this thesis is to study the asymptotic properties of the small data solutions of the Vlasov-Maxwell system using vector field methods for both the electromagnetic field and the particle density. No compact support asumption is required on the initial data. Instead, we make crucial use of the null structure of the equations in order to deal with a resonant phenomenon caused by the particles approaching the speed of propagation of the Maxwell equations. Due to the robustness of vector field methods and contrary to previous works on this topic, we also study plasmas with massless particles.We start by investigating the high dimensional cases d ≥ 4 where dispersive effects allow us to derive strong decay rate on the solutions of the system and their derivatives. For that purpose, we proved a new decay estimate for solutions to massive relativistic transport equations. In order to obtain an analogous result for massless particles, we required the velocity support of the distribution function to be initially bounded away from $0$ and we then proved that this assumption is actually necessary. The second part of this thesis is devoted to the three dimensional massless case, where a stronger understanding of the null structure of the Vlasov-Maxwell system is essential in order to derive the optimal decay rate of the null components of the electromagnetic field, the velocity average of the particle density and their derivatives. We then focus on the asymptotic behavior of the small data solutions of the massive Vlasov-Maxwell system in 3d. Specific problems force us to modify the vector fields used previously to study the Vlasov field in order to compensate the worst error terms in the commuted transport equations. Finally, still for the massive system in 3d, we restrict our study of the solutions to the exterior of a light cone. The strong decay properties satisfied by the velocity average of the particle density in such a region permit us to relax the hypothesis on the initial data and lead to a much simpler proof
Gensbittel, Fabien. "Analyse asymptotique de jeux répétés à information incomplète." Phd thesis, Université Panthéon-Sorbonne - Paris I, 2010. http://tel.archives-ouvertes.fr/tel-00579522.
Повний текст джерелаMastrolia, Thibaut. "Une étude de la régularité de solutions d'EDS Rétrogrades et de leurs utilisations en finance." Thesis, Paris 9, 2015. http://www.theses.fr/2015PA090066.
Повний текст джерелаIn the first part of this PhD thesis, we give conditions on the parameters of Lipschitz and quadratic growth BSDEs such that the laws of the components Y and Z of the solutions to such BSDEs admit densities with respect to the Lebesgue measure. We then provide conditions on the parameters of non-Markovian Lipschitz or quadratic growth BSDEs such that the components Y and Z of their solutions are Malliavin differentiable. We obtain these conditions by applying a new characterization of the Malliavin differentiability, as an Lp convergence criterion of difference quotients. This result provide also a new characterization of the Malliavin-Sobolev spaces that we study in detail. To finish this first theoretical part, we provide conditions ensuring that solutions of non-Markovian stochastic-Lipschitz BSDEs are Malliavin differentiable by applying the characterization of the Malliavin differentiability obtained. We then analyse the existence of densities for the laws of the components of solutions to such BSDEs and we apply our result to a model of gene expression. In the second part of this thesis, we investigate financial problems dealing with BSDEs. We first solve a utility maximization problem with a random horizon, characterized by an exogenous default time. We reduce it to the analysis of a specific BSDE, which we call BSDE with singular coefficients, when the default time is assumed to be bounded. We give conditions ensuring the existence and the uniqueness of solutions to such BSDE and we illustrate our results by numerical simulations. Then, we solve a Principal/Agent problem with ambiguity, in which the "Nature" impacts both the utilities of the Agent and the Principal, charaterized by sets of probability measures which modify the volatility
Mercier, Magali. "Étude de différents aspects des EDP hyperboliques : persistance d’onde de choc dans la dynamique des fluides compressibles, modélisation du trafic routier, stabilité des lois de conservation scalaires." Thesis, Lyon 1, 2009. http://www.theses.fr/2009LYO10246/document.
Повний текст джерелаIn this work, we study hyperbolic systems of balance laws. The first part is devoted to compressible fluid dynamics, and particularly to the lifespan of smooth or piecewise smooth solutions. After presenting the state of art, we show an extension to more general gases of a theorem by Grassin.We also study shock waves solutions: first, we extend T. T. Li's approach to estimate the time of existence in the isentropic spherical case; second, we develop Whitham's ideas to obtain an approximated equation satisfied by the discontinuity surface. In the second part, we set up a new model for a roundabout. This leads us to study a multi-class extension of the macroscopic Lighthill-Whitham-Richards' model. We study the traffic on an infinite road, with some points of junction. We distinguish vehicles according to their origin and destination and add some boundary conditions at the junctions. We obtain existence and uniqueness of a weak entropy solution for the Riemann problem. As a complement, we provide numerical simulations that exhibit solutions with a long time of existence. Finally, the Cauchy problem is tackled by the front tracking method. In the last part, we are interested in scalar hyperbolic balance laws. The first question addressed is the control of the total variation and the stability of entropy solutions with respect to flow and source. With this result, we can study equations with non-local flow, which do not fit into the framework of classical theorems. We show here that these kinds of equations are well posed and we show the Gâteaux-differentiability with respect to initial conditions, which is important to characterize maxima or minima of a given cost functional
Chen, Huyuan. "Fully linear elliptic equations and semilinear fractionnal elliptic equations." Thesis, Tours, 2014. http://www.theses.fr/2014TOUR4001/document.
Повний текст джерелаThis thesis is divided into six parts. The first part is devoted to prove Hadamard properties and Liouville type theorems for viscosity solutions of fully nonlinear elliptic partial differential equations with gradient term
Lécureux-Mercier, Magali. "Étude de différents aspects des EDP hyperboliques : persistance d'onde de choc dans la dynamique des fluides compressibles, modélisation du trafic routier, stabilité des lois de conservation scalaires." Phd thesis, Université Claude Bernard - Lyon I, 2009. http://tel.archives-ouvertes.fr/tel-00452936.
Повний текст джерелаMercier, Magali. "Étude de différents aspects des EDP hyperboliques : persistance d'onde de choc dans la dynamique des fluides compressibles, modélisation du trafic routier, stabilité des lois de conservation scalaires." Phd thesis, Université Claude Bernard - Lyon I, 2009. http://tel.archives-ouvertes.fr/tel-00705215.
Повний текст джерелаMachado, Sandra Cristina Poleri. "Efeitos provocados pelos irrigantes endodônticos na estrutura do canal radicular." Master's thesis, [s.n.], 2015. http://hdl.handle.net/10284/5228.
Повний текст джерелаA Endodontia está focada no estudo das lesões da polpa dentária e da região periapical, bem como na sua prevenção e tratamento. O tratamento endodôntico (TE) baseia-se na desinfeção e na erradicação dos microorganismos do sistema de canais radiculares (SCR) através de processos de instrumentação e irrigação. O principal intento da instrumentação é o desbridamento mecânico do sistema de canais radiculares e a criação de um espaço adequado para que as substâncias antimicrobianas, denominadas irrigantes, consigam penetrar nessa rede de canais. São diversas as soluções irrigantes utilizadas em endodontia e todas elas têm sido objeto de estudo para diferentes autores, no sentido de se conseguir entender duma melhor forma as suas propriedades, os seus mecanismos de ação, as vantagens e desvantagens das suas combinações, entre outros aspetos, durante o preparo químico-mecânico. O objetivo desta revisão bibliográfica foi a pesquisa sobre os efeitos provocados pelos irrigantes endodônticos na estrutura do canal radicular. Para tal, realizou-se uma pesquisa bibliográfica baseada principalmente nos principais irrigantes endodônticos, nomeadamente o hipoclorito de sódio (NaOCl), a clorhexidina (CHX), o ácido etilenoamino tetra-acético (EDTA) e o ácido cítrico, bem como a associação entre os mesmos, os seus efeitos provocados na dentina e as consequências da utilização dos mesmos na adesão de materiais à dentina durante a obturação. Após a pesquisa efetuada, concluiu-se que o NaOCl, o EDTA e o ácido cítrico provocam desmineralização dentinária, alterando a microdureza da dentina e tornando o dente mais frágil. No entanto, essa diminuição na dureza também ajuda na instrumentação e no alargamento do canal. O EDTA e o ácido cítrico, devido à capacidade de remoção da smear layer que lhes é conferida, provocam um aumento da rugosidade na superfície. E a clorhexidina, apesar de não provocar qualquer desmineralização, ao ser conjugada com o NaOCl, origina um precipitado que vai interferir no selamento dos canais radiculares.
Endodontics is based on the study of apical periodontitis and on the periapical region, as well as in their prevention and treatment. The nonsurgical endodontic therapy is based on the disinfection of the root canal system and in the eradication of microorganisms through instrumentation and irrigation processes. The main purpose of instrumentation is the mechanical debridement of the root canal system and the creating of a suitable space for antimicrobial agents, called irrigants, to penetrate this canals network. There are several irrigation solutions used in endodontics and all of them have been studied by diferente authors, in order to achieve a better understanding of their mechanisms of action, the advantages and disadvantages of their combinations, among others, during the chemical-mechanical preparation. The purpose of the literature review was the research of the effects caused by endodontic irrigants on root canal structure. So, it was made a literature research based mostly on the main endodontic irrigants, such as sodium hypochlorite (NaOCl), chlorhexidine (CHX), etilenoamino tetraacetic acid (EDTA) and citric acid, as well as the association between them, the effects caused on dentin and the consequences of using them in the materials adhesion to the dentin during filling. After the review, it was concluded that NaOCl, EDTA and citric acid causes dentin demineralization, changing the dentin microhardness, making the tooth more fragile. However, this reduction in dentin hardness also helps the instrumentation and the enlargement of the canal. Both EDTA and citric acid, due to the removal of the smear layer, increased the surface roughness. The chlorhexidine, despite not causing any demineralization, when combined with NaOCl, creates a precipitate which will interfere with the sealing of the root canal.
Guillaume, Damien. "Etude expérimentale du système fer - smectite en présence de solution à 80°C et 300°C." Phd thesis, Université Henri Poincaré - Nancy I, 2002. http://tel.archives-ouvertes.fr/tel-00007672.
Повний текст джерелаKharroubi, Idris. "EDS Rétrogrades et Contrôle Stochastique Séquentiel en Temps Continu en Finance." Phd thesis, Université Paris-Diderot - Paris VII, 2009. http://tel.archives-ouvertes.fr/tel-00439542.
Повний текст джерелаDelay, Erwann. "Prescription de courbures sur l'espace hyperbolique." Phd thesis, Université de Nice Sophia-Antipolis, 1998. http://tel.archives-ouvertes.fr/tel-00011944.
Повний текст джерелаPremière partie :
thème de la courbure scalaire conforme sur l'espace hyperbolique. Nous
apportons ici une étude fine du comportement asymptotique en toute
dimension. Nous traitons toujours d'équations semi-linéaires
générales, avant d'appliquer nos résultats au cas particulier de
l'équation géométrique.
Deuxième partie :
thème de la courbure de Ricci sur l'espace hyperbolique.
Nous obtenons le résultat suivant.
Sur la boule unité de $\R^n$, on considère la métrique
hyperbolique standard $H_0$, dont la courbure de Ricci vaut $R_0$
et la courbure de Riemann-Christoffel vaut ${\cal R}_0$.
Nous montrons qu'en dimension $n\geq10$, pour
tout tenseur symétrique $R$ voisin
de $R_0$, il existe une unique métrique $H$ voisine de $H_0$
dont la courbure de Ricci vaut $R$.
Nous en déduisons, dans le cadre $C^\infty$, que l'image
de l'opérateur de Riemann-Christoffel est une sous-variété
au voisinage de ${\cal R}_0$.
Nous traitons aussi dans cette partie de la courbure de Ricci contravariante
en toute dimension, du problème de Dirichlet à l'infini en dimension 2,
et de quelques obstructions.
Lequeurre, Julien. "Quelques résultats d'existence, de contrôlabilité et de stabilisation pour des systèmes couplés fluide - structure." Phd thesis, Université Paul Sabatier - Toulouse III, 2011. http://tel.archives-ouvertes.fr/tel-00685107.
Повний текст джерелаBen, Slimene Jihed. "Réductibilité et théorie de Floquet pour des systèmes différenciels non linéaires." Phd thesis, Université Panthéon-Sorbonne - Paris I, 2013. http://tel.archives-ouvertes.fr/tel-00952406.
Повний текст джерелаWei, Xiaoli. "Control of McKean-Vlasov systems and applications." Thesis, Sorbonne Paris Cité, 2018. https://theses.md.univ-paris-diderot.fr/WEI_Xiaoli_2_complete_20181127.pdf.
Повний текст джерелаThis thesis deals with the study of optimal control of McKean-Vlasov dynamics and its applications in mathematical finance. This thesis contains two parts. In the first part, we develop the dynamic programming (DP) method for solving McKean-Vlasov control problem. Using suitable admissible controls, we propose to reformulate the value function of the problem with the law (resp. conditional law) of the controlled state process as sole state variable and get the flow property of the law (resp. conditional law) of the process, which allow us to derive in its general form the Bellman programming principle. Then by relying on the notion of differentiability with respect to probability measures introduced by P.L. Lions [Lio12], and Itô’s formula along measure-valued processes, we obtain the corresponding Bellman equation. At last we show the viscosity property and uniqueness of the value function to the Bellman equation. In the first chapter, we summarize some useful results of differential calculus and stochastic analysis on the Wasserstein space. In the second chapter, we consider the optimal control of nonlinear stochastic dynamical systems in discrete time of McKean-Vlasov type. The third chapter focuses on the stochastic optimal control problem of McKean-Vlasov SDEs without common noise in continuous time where the coefficients may depend upon the joint law of the state and control. In the last chapter, we are interested in the optimal control of stochastic McKean-Vlasov dynamics in the presence of common noise in continuous time.In the second part, we propose a robust portfolio selection model, which takes into account ambiguity about both expected rate of return and correlation matrix of multiply assets, in a continuous-time mean-variance setting. This problem is formulated as a mean-field type differential game. Then we derive a separation principle for the associated problem. Our explicit results provide an explanation to under-diversification, as documented in empirical studies
Ghorbel, Mohamed-Amin. "Analyse numérique de la dynamique des dislocations et applications à l'homogénéisation." Phd thesis, Ecole des Ponts ParisTech, 2007. http://pastel.archives-ouvertes.fr/pastel-00002190.
Повний текст джерелаM'Rad, Mohamed. "Utilités Progressives Dynamiques." Phd thesis, Ecole Polytechnique X, 2009. http://pastel.archives-ouvertes.fr/pastel-00005815.
Повний текст джерелаPossamaï, Dylan. "A journey through second order BSDEs and other contemporary issues in mathematical finance." Palaiseau, Ecole polytechnique, 2011. http://pastel.archives-ouvertes.fr/docs/00/65/15/89/PDF/Thesis.pdf.
Повний текст джерелаThis PhD dissertation presents two independent research topics dealing with contemporary issues in mathematical finance, the second one being divided into into two distinct problems. Throughout the first part of the dissertation, we study the notion of second order backward stochastic differential equations (2BSDE in the following), first introduced by Cheredito, Soner, Touzi and Victoir, then reformulated by Soner, Touzi and Zhang. We start by proving an extension of their existence and uniqueness results to the case of a continuous generator with linear growth. Then, we pursue our study with another extension to the case of a quadratic generator. The theoretical results obtained in that chapter allow us to solve a problem of utility maximization for an investor in an incomplete market, the source of incompleteness being on one hand the restrictions on the class of admissible trading strategies, and on the other hand the fact that the volatility of the market is uncertain. We prove the existence of optimal strategies, we characterize the value function of the problem thanks to a 2BSDE and solve explicetely several examples which give further insight into the main modifications introduced by the uncertain volatility framework. We conclude the first part of the dissertation by introducing the notion of 2BSDEs reflected on an obstacle. We prove existence and uniqueness of the solutions of those equations and propose an application to the pricing problem of American options under volatility uncertainty. The first chapter of the second part of the dissertation deals with a problem of option pricing in an illiquidity model. We provide asymptotic expansions of those prices in the infinite liquidity limit and highlight a transition phase effect depending on the regularity of the payoff considered. We also give numerical results. Finally, the last chapter of this thesis is devoted to a Principal/Agent problem with moral hazard. A bank (the agent) has a certain number of defaultable loans and is ready to exchange their interests with the promess of payments. The bank can influence the default probabilities by choosing whether it monitors the loans or not, this monitoring being costly for the bank. Those choices are only known by the bank itself. Investors (the principal) want to design contracts which maximize their utility while implicitely giving incentives to the bank to monitor all the loans at all times. We solve explicitely this optimal control problem, we describe the associated optimal contract and its economic implications and provide some numerical simulations
Le, Guyader Carole. "Imagerie Mathématique: segmentation sous contraintes géométriques ~ Théorie et Applications." Phd thesis, INSA de Rouen, 2004. http://tel.archives-ouvertes.fr/tel-00009036.
Повний текст джерелаPour pallier ces difficultés, nous proposons ici des modèles de segmentation intégrant des contraintes géométriques et satisfaisant les critères classiques de détection avec en particulier la régularité sur le contour que cela implique.
Kalla, Caroline. "Fay's identity in the theory of integrable systems." Phd thesis, Université de Bourgogne, 2011. http://tel.archives-ouvertes.fr/tel-00622289.
Повний текст джерелаPossamaï, Dylan. "Voyage au coeur des EDSRs du second ordre et autres problèmes contemporains de mathématiques financières." Phd thesis, Ecole Polytechnique X, 2011. http://pastel.archives-ouvertes.fr/pastel-00651589.
Повний текст джерелаTröger, Ralph. "Supply Chain Event Management – Bedarf, Systemarchitektur und Nutzen aus Perspektive fokaler Unternehmen der Modeindustrie." Doctoral thesis, Universitätsbibliothek Leipzig, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-155014.
Повний текст джерелаMirsaeedi, Minoo. "EDA Solutions for Double Patterning Lithography." Thesis, 2012. http://hdl.handle.net/10012/6936.
Повний текст джерелаLI, GI-WEI, and 李旂緯. "Simultaneous absorption of No and So2 in Fe(II)-EDIA solutions." Thesis, 1987. http://ndltd.ncl.edu.tw/handle/25894148736068590333.
Повний текст джерелаGhosh, Sampa. "Quadratic Optical Nonlinearity And Geometry Of 1:1 Electron Donor Acceptor Complexes In Solution." Thesis, 2008. http://hdl.handle.net/2005/711.
Повний текст джерелаSodagar, Nina, Ana Beatriz Gonçalves Dias, Barbara Ruivo Tavares, Carolina Pereira Lima Tomás Lourenço, and Francesco Faneli. "Development of a marketing plan for a new business model of EDP Comercial or how can EDP Be the Uber and not the taxi driver." Master's thesis, 2017. http://hdl.handle.net/10362/25211.
Повний текст джерелаBondì, Luca, Sally Brooker, Federico Totti, and Anna Garden. "Towards Predictable Tuning of Spin Crossover." Doctoral thesis, 2021. http://hdl.handle.net/2158/1239476.
Повний текст джерелаManita, Vitor Manuel Cruz. "The importance of Quality Assurance as a Data Scientist: Commom pitfalls, examples and solutions found while validationand developing supervised binary classification models." Master's thesis, 2021. http://hdl.handle.net/10362/113991.
Повний текст джерелаIn today’s information era, where Data galvanizes change, companies are aiming towards competitive advantage by mining this important resource to achieve actionable insights, knowledge, and wisdom. However, to minimize bias and obtain robust long-term solutions, the methodologies that are devised from Data Science and Machine Learning approaches benefit from being carefully validated by a Quality Assurance Data Scientist, who understands not only both business rules and analytics tasks, but also understands and recommends Quality Assurance guidelines and validations. Through my experience as a Data Scientist at EDP Distribuição, I identify and systematically report on seven key Quality Assurance guidelines that helped achieve more reliable products and provided three practical examples where validation was key in discerning improvements.
Freitas, Raquel Azevedo de. "Efeitos das soluções irrigantes sobre a estrutura dentinária." Master's thesis, 2017. http://hdl.handle.net/10284/6474.
Повний текст джерелаThe endodontic treatment depends on good cleaning and microorganisms’ removal to remove the focus of infection, thus restoring tooth function through instrumentation and disinfection of the canals. Instrumentation is a mechanical process that aims to remove debris and gives form to the walls of the canal. The chemical solutions will act on the microorganisms, organic and inorganic matter thus helping in the disinfection. There are several irrigators used in endodontics, which have been studied by several authors. The objective of this literature review was to investigate the effects of irrigating solutions on the dentin structure. Although there is no ideal irrigant, the one that comes closest, and therefore the most used, is NaOCl. It can be used alone or with other solutions such as EDTA, CHX and citric acid. The various irrigating solutions in association can have several effects on the dentin, such as demineralization, microhardness alteration and dentin roughness, leading to a weakening of the tooth.
Sousa, Maria de Andrade Lima Nazareth de. "In search for the holy grail: EDP’s new home energy management service; place, physical evidence & service excellence." Master's thesis, 2019. http://hdl.handle.net/10362/68130.
Повний текст джерелаMartins, Fábio José Teixeira. "Soluções irrigantes no tratamento endodôntico não cirúrgico." Master's thesis, 2019. http://hdl.handle.net/10284/8648.
Повний текст джерелаIntroduction: The scientific literature currently suggests the use of various types of irrigating solutions. Using these solutions promotes the disinfection and reduction of bacteria that is the key to a successful Endodontic Treatment. Not only do they have this effect but they play other important roles such as ability to dissolve organic tissues and smear layer removal. The aim: To deepen knowledge about endodontic irrigants, to describe which irrigators are most used in Endodontics, to present advantages, disadvantages and to know which irrigant meets the most requirements for the most successful Non-Surgical Endodontic Treatment. Methodology: Scientific articles found from April 1 to June 30, 2019, which are in the 2004-2019 time range of the electronic search engines: Pubmed; B-on; by combining search terms. The total number of articles collected was 107 and of these 49 were used and 2 books were also used.
Oliveira, Jéssica Alexandre Rodrigues de. "Terapia fotodinâmica em endodontia." Master's thesis, 2016. http://hdl.handle.net/10284/5780.
Повний текст джерелаPhotodynamic Therapy (PDT) has been researched in Oral Medicin in order to provide effectiveness to patient. This is a technique with very few side effects, that can reduce time repair and promove very accurated root desinfection during endodontic treatment. The purpouse of this literature review is to clarify the use of photodynamic therapy in Endodontics and its appliances, trying to understand and analise its role and use in canal desinfection in Endodontics.