Dissertations / Theses on the topic 'Non'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Non.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
Amblard, Pierre-Olivier. "Statistiques d'ordre supérieur pour les signaux non gaussiens, non linéaires, non stationnaires." Grenoble INPG, 1994. http://www.theses.fr/1994INPG0002.
Full textFontenot, Anthony. "Non-Design and the Non-Planned City." Thesis, Princeton University, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3597482.
Full textThis study seeks to understand the larger cultural context that gave rise to what is referred to as "non-design," a term designated to denote a particular aesthetic that is characterized by a suspicion of, and/or rejection of, "conscious" design, while embracing various phenomenon that emerge without "intention" or "deliberate human design." The study traces the phenomenon of "non-design" in British and American design culture of the postwar period. The author argues that following Friedrich von Hayek's theories of the "undesigned" nature of social institutions and his concept of a "spontaneous order" of the 1940s, non-design first emerged in design discourse and practice in the early 1950s in England, particularly in the work of certain members of the Independent Group, and by the mid-1960s it gained currency in the United States in the architectural and urban theories of Charles Moore, Robert Venturi and Denise Scott Brown, and particularly in Reyner Banham's writing on American urbanism. While rarely made explicit, this dissertation argues that the concept of non-design played an important role in design and urban debates of the postwar period.
Schittenkopf, Christian, Georg Dorffner, and Engelbert J. Dockner. "Non-linear versus non-gaussian volatility models." SFB Adaptive Information Systems and Modelling in Economics and Management Science, WU Vienna University of Economics and Business, 1999. http://epub.wu.ac.at/724/1/document.pdf.
Full textSeries: Report Series SFB "Adaptive Information Systems and Modelling in Economics and Management Science"
Villa, Maria Cristina. "L'Italia non vede, non sente, non parla? il cinema italiano della deportazione razziale /." Diss., Restricted to subscribing institutions, 2006. http://proquest.umi.com/pqdweb?did=1362521431&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.
Full textVita. Filmografia generale sul cinema della deportazione razziale-- fiction (leaves 470-481). Filmografia del cinema italiano della deportazione razziale (leaves 482-490). Includes bibliographical references (leaves 491-510).
McDermott, Elizabeth Clare. "Non-social teaching for non-social learners: a non-social and non-interactive verb-learning paradigm for children with ASD." Thesis, Boston University, 2014. https://hdl.handle.net/2144/21216.
Full textChildren with ASD suffer from language deficits that are in part due to impaired social abilities. In the current study, we test a non-social and noninteractive method for teaching word meanings. If successful, this technique will expand the ways we teach early vocabulary that would shape intervention and improve the quality of life and the future prospects of children with ASD. First, the participants (ages 26.09 - 47.37) listen to a series of transitive or intransitive sentences while watching an unrelated silent animation. These sentence types carry different meanings; transitive verbs describe causative actions, and intransitive verbs describe synchronous actions. Then they are asked to map the verb to meaning by finding the relevant action out of two candidate scenes. We analyze the children’s direction of gaze. The results revealed that children with ASD in this sample who heard transitive sentences in maximally non-social and non-interactive contexts did not show a significant preference for the causative scene in either test condition. Additional data will reveal whether children with ASD can learn from non-social presentation of novel words if given multiple exposures to the test scenes. This work will provide insight into the mechanisms underlying word learning in children with ASD and, if successful, provide the foundation for research into a new kind of non-social intervention that capitalizes on these children’s strengths.
2031-01-01
Welnetz, Katie. "Non-response and non-respondents in survey research." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0004/NQ41600.pdf.
Full textMoran, Fidelma. "Non-invasive ventilation in non cystic fibrosis bronchiectasis." Thesis, University of Ulster, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.445062.
Full textDelbourgo, Daniel. "Non-Archimedean L-series at non-ordinary primes." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627094.
Full textAdigwe, Obi Peter. "Non-medical prescribing in chronic non-malignant pain." Thesis, University of Leeds, 2012. http://etheses.whiterose.ac.uk/12675/.
Full textLabat, David. "Non-linéarité et non stationnarité en hydrologie karstique." Toulouse, INPT, 2000. http://www.theses.fr/2000INPT043H.
Full textZhou, Jianying. "Non-repudiation." Thesis, Royal Holloway, University of London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286077.
Full textGUALTIERI, MARTINA MARIA MACARENA. "Non Recognition." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2019. http://hdl.handle.net/10281/241155.
Full textNon-recognition in international law presents several questions that need to be resolved both in the light of its nature, its content and its effects. International practice offers several examples of non-recognition. The present work tries to give order to this variety of cases trying to understand how a case by case analysis is the best approach to reaffirm the importance of non-recognition. The fact that it presents a different content according to the situation which is the object of non-recognition does not determine its irrelevance. In fact, it turns out to be an indispensable tool to guarantee the preservation of the international order.
Fosséprez, Marc Fosseprez Marc. "Topologie et comportement des circuits non linéaires non réciproques /." [S.l.] : [s.n.], 1988. http://library.epfl.ch/theses/?nr=730.
Full textBen, Mahjoub Otman. "Non-local dynamics and intermittency in non-homogeneous flows." Doctoral thesis, Universitat Politècnica de Catalunya, 2000. http://hdl.handle.net/10803/6572.
Full textLa tesi analitza les dinàmiques no locals i la intermitència en fluids no homogenis i no isotròpics tant en experiments de laboratori com en dades geogràfiques. Després de l'estudi sobre els models que descriuen la intermitència en fluids homogenis i isotròpics, presentem un model per fluids no homogenis i no isotropics. El model es basa en l'anàlisi de la jerarquia de transmissió d'energia. S'utilitza la tècnica de la Extended Self Similarity amb l'objectiu d'estudiar l'escala de lleis de les funcions estructurals de velocitat. Els resultats experimentals de tres tipus de fluids que s'han comparat amb el model per fluids no homogenis i no isotròpics són els següents: turbulència generada per un cilindre en un canal de vent i turbulència generada per una reixa i per un jet en un canal d'aigua. S'analitza la turbulència geogràfica del Delta de l'Ebre i del Knebel Vig i els resultats són comparats amb els del model anteriorment esmentat. La contribució principal és el descobriment d'un paràmetre aparentment relacionat amb la jerarquia de transmissió d'energia en el rang inercial que juga un paper clau en la comprensió de les dinàmiques dels fluids no homogenis.
.
The thesis analyze the non-local dynamics and intermittency in non-homogeneous and non-isotropic flows both in the laboratory experiments and geophysical data. After a review on models describing intermittency in homogeneous and isotropic flows, a different model for non-homogeneous and non-isotropic flows is introduced. A model is based on the analysis of the energy transfer hierarchy. The technique of Extended Self Similarity is used to study the scaling laws of the velocity structure functions. Experimental results of three type of flows cylinder wake turbulence in wind tunnel, grid and jet turbulence in water channel are presented and compared with the model. The geophysical turbulence in the Ebro Delta and Knebel Vig are analyzed and the results are compared with the model. The important contribution is the discovery of a new apparently parameter related to the energy transfer hierarchy in the inertial range which plays a key role in the understanding of the dynamics of the non-homogeneous flows.
Castellví, Fernández Quim. "Non-focal non-thermal electrical methods for cancer treatment." Doctoral thesis, Universitat Pompeu Fabra, 2017. http://hdl.handle.net/10803/586217.
Full textLa majoria del mètodes físics d'ablació tumoral es basen en produir dany tèrmic de manera focalitzada. Tot i ser considerats una alternativa habitual a la resecció quirúrgica, el principi tèrmic de funcionament, comporta un risc per la preservació d'estructures vitals adjacents a la zona de tractament, tals com grans vasos o nervis. A més, el fet de ser focals, fa impracticable la seva aplicació en cas de múltiples nòduls o tumors de difícil accés. Aquesta tesi explora tractaments elèctrics no basats en temperatura, capaços de ser aplicats de manera no focal. S'han investigat dos tractaments: El primer, proposat per altres fa pocs anys, està basat en aplicar permanentment camps elèctrics alterns de baixa magnitud a través d'elèctrodes superficials. Aquí, aquest tractament s'ha estudiat in vivo tant per avaluar la seva eficàcia com per discernir si aquesta resideix en la temperatura. El segon tractament es basa en el fenomen d'electroporació i persegueix el tractament de nòduls hepàtics. En els tractaments basats en electroporació, s’apliquen breus camps elèctrics de gran magnitud per tal de permeabilitzar la membrana cel·lular. Això permet la penetració d’agents quimioterapèutics o produeix directament la mort cel·lular. En lloc d'utilitzar, com és habitual, agulles per tal d'aplicar el tractament, aquí s'explora tractar tot el fetge de forma no localitzada, fent servir grans elèctrodes plans i paral·lels. Utilitzant solucions d'alta conductivitat elèctrica, es pretén magnificar selectivament el camp elèctric sobre els tumors, sent així capaços de destruir tots els tumors i alhora preservar el teixit sà. El tractament proposat per els tumors hepàtics, requereix d'un equip generador actualment no disponible. El presentat treball inclou el disseny d'una nova topologia de generadors capaç de complir amb els requisits.
Torres, Ledesma César Enrique. "Non linear ellipter equations with non-local regional operators." Tesis, Universidad de Chile, 2013. http://www.repositorio.uchile.cl/handle/2250/115927.
Full textEsta tesis consiste de cinco partes. En la primera parte se considera el problema de Dirichlet lineal y no lineal con una difusi\'on no local regional definido implicitamente por \!\!donde $0< \alpha < 1$, $\rho \in C(\overline)$ y $\lambda dist(x,\partial \Omega) \leq \rho (x) \leq dist(x, \partial \Omega)$ con $\lambda \in (0,1]$, $x\in \Omega$. Haciendo uso del teorema de Lax-Milgran y el Teorema del paso de la monta\~na se demuestra la existencia de soluciones d\'ebiles. En la segunda parte, se considera la ecuaci\'on de Schr\"odinger no lineal con difusi\'on no local regional {\small \begin{eqnarray}\label{Aeq04-} \epsilon^{2\alpha} (-\Delta)_{\rho}^{\alpha}u + u = f(u) \quad \mbox{in}\quad \mathbb{R}^{n},\quad u \in H^{\alpha}(\mathbb{R}^{n}), \end{eqnarray}} \!\!donde $0< \alpha <1$, $\epsilon>0$, $n\geq 2$ y $f:\mathbb{R} \to \mathbb{R}$ es super-lineal y tiene un crecimiento sub-critico. El operador $(-\Delta)_{\rho}^{\alpha}$ es el laplaciano no local regional, con rango de alcance determinado por una funci\'on positiva $\rho \in C(\mathbb{R}^{n}, \mathbb{R}^{+})$ y definido por {\small \begin{eqnarray}\label{Aeq05-} \int_{\mathbb{R}^{n}} \!\!\!\!(-\Delta)_{\rho}^{\alpha} uvdx = \int_{\mathbb{R}^{n}}\!\!\int_{B(0,\rho (x))} \!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\frac{[u(x+z) - u(x)][v(x+z) - v(x)]}{|z|^{n+2\alpha}}dzdx. \end{eqnarray}} \!\!Se prueba la existencia de soluci\'on d\'ebil para (\ref{Aeq04-}) aplicando el Teorema del paso de la monta\~na al funcional $I_{\rho}$ definido en $H_{\rho}^{\alpha}(\mathbb{R}^{n})$, combinado con un argumento de comparaci\'on creado por Rabinowitz. El objetivo principal de la tercera parte es estudiar el comportamiento de concentraci\'on de la soluci\'on d\'ebil de la ecuaci\'on (\ref{Aeq04-}) con $f(s) = s^{p}$, cuando $\epsilon \to 0$. En la cuarta parte se estudia el resultado de simetr\'ia para las soluciones ground state de (\ref{Aeq04-}). Para tal prop\'osito, se combina los rearreglos de funciones con los m\'etodos variacionales. Finalmente, se considera un sistema Hamiltoniano fraccionario {\small \begin{eqnarray}\label{Aeq08-} _{t}D_{\infty}^{\alpha}(_{-\infty}D_{t}^{\alpha}u(t)) + L(t)u(t) = & \nabla W(t,u(t)) \end{eqnarray}} \!\!donde $\alpha \in (1/2,1)$, $t\in \mathbb{R}$, $u\in \mathbb{R}^{n}$, $L\in C(\mathbb{R}, \mathbb{R}^{n\times n})$ es una matriz sim\'etrica positiva definida para todo $t\in \mathbb{R}$, $W\in C^{1}(\mathbb{R} \times \mathbb{R}^{n}, \mathbb{R})$ y $\nabla W (t,u)$ es el gradiente de $W$ en $u$. Se demuestra que (\ref{Aeq08-}) posee al menos una soluci\'on no trivial via el Teorema del paso de la monta\~na.
Nabti, Abderrazak. "Non linear, non-local evolution equations : theory and application." Thesis, La Rochelle, 2015. http://www.theses.fr/2015LAROS032.
Full textOur objective in this thesis is to study the existence of local solutions, existence global and blow up of solutions at a finite time to some nonlinear nonlocal Schrödinger equations. In the case when a solution blows-up at a finite time T < 1, we obtain an upper estimate of the life span of solutions. In the first chapter, we consider a nonlinear Schrödinger equation on RN. We first prove local existence of solution for any initial condition in L2 space. Then we prove nonexistence of a nontrivial global weak solution. Furthermore, we prove that the L2-norm of the local intime L2-solution blows up at a finite time. The second chapter is dedicated to study an initial value problem for the nonlocal intime nonlinear Schrödinger equation. Using the test function method, we derive a blow-up result. Then based on integral inequalities, we estimate the life span of blowing-up solutions. In the chapter 3, we prove nonexistence result of a space higher-order nonlinear Schrödinger equation. Then, we obtain an upper bound of the life span of solutions. Furthermore, the necessary conditions for the existence of local or global solutions are provided. Next, we extend our results to the 2 _ 2-system. Our method of proof rests on a judicious choice of the test function in the weak formulation of the equation. Finally, we consider a nonlinear nonlocal in time Schrödinger equation on the Heisenberg group. We prove nonexistence of non-trivial global weak solution of our problem. Furthermore, we give an upper bound of the life span of blowing up solutions
Deser, Andreas. "Lie algebroids, non-associative structures and non-geometric fluxes." Diss., Ludwig-Maximilians-Universität München, 2013. http://nbn-resolving.de/urn:nbn:de:bvb:19-160487.
Full textBillson, Duncan Robert. "Advanced non-contacting ultrasonic techniques for non-destructive testing." Thesis, University of Warwick, 1994. http://wrap.warwick.ac.uk/107577/.
Full textde, Cabo Portugal Sebastian. "Non Visuals : Material exploration of non-visual interaction design." Thesis, Umeå universitet, Designhögskolan vid Umeå universitet, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-182466.
Full textBenitez, Federico. "Non Perturbative Renormalization Group : from equilibrium to non-equilibrium." Paris 6, 2013. http://www.theses.fr/2013PA066009.
Full textMany of the most important open problems in statistical mechanics are related with systems out of thermal equilibrium. In this work we use field theory methods to study some of these systems. To do so, we first introduce a field theory representation for the systems of interest, as well as the specific formalism to be used throughout, the so-called non perturbative renormalization group (NPRG). This formalism has emerged in the last years as a very efficient way to deal with strongly correlated systems, and has been applied with success to problems both in and out of equilibrium. Before treating the actual systems of interest, we develop some new tools and methods within the NPRG context, and test them in a simple scalar field theory, belonging to the Ising universality class. We are able to obtain results for the momentum-dependent scaling function of the d=3 Ising model, without having to fix any free parameter. Also, in order to tackle in an efficient way the physics of out of equilibrium systems, we study in detail some formal aspects of their passage to a field theory representation, as well as the equivalences between different possible ways to perform this passage. After these preliminaries, we concentrate in out of equilibrium active-to-absorbing phase transitions in reaction-diffusion systems, and in particular in the subclass known as branching and annihilating random walks (BARW). Among other results, we use the NPRG to find an exact solution to any vertex in a simple system, known as pure annihilation. With this, we analyze some properties of BARW at low branching rates, by means of an expansion in the branching rate around pure annihilation. This perturbative expansion, which is performed around a nontrivial model, allows us to find some striking exact results for some of the most important universality classes in these systems
CARPENTIER, RIOU ANNE-MARIE. "Dix cas de polyarthrite rhumatoide non dr1 non dr4." Lyon 1, 1992. http://www.theses.fr/1992LYO1M233.
Full textGhoul, Tej-eddine. "Etude de solutions non globales d’équations d’évolution non linéaires." Paris 13, 2011. http://scbd-sto.univ-paris13.fr/intranet/edgalilee_th_2012_ghoul.pdf.
Full textIn this memory, we study the phenomenon of explosion in finite time for sign changing solution of the following equation : [. . . ] This result extends a similar result of Cazenave, Dickstein, and Weissler [. . . ]
BECHAH, ABDELHAK. "Systemes elliptiques non lineaires dans des ouverts non bornes." Toulouse 3, 2000. http://www.theses.fr/2000TOU30037.
Full textRhomari, Noureddine. "Filtrage non parametrique pour les processus non markoviens. Applications." Paris 6, 1994. http://www.theses.fr/1994PA066246.
Full textHenry, Marie-Louise. "Non-thyroid malignancies in familial non-medullary thyroid cancer." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1555088063551251.
Full textRUGGIERI, SOPHIE. "Traitement des cancers du poumon non anaplasiques, non resecables, non metastatiques : a propos de 505 cas." Angers, 1989. http://www.theses.fr/1989ANGE1084.
Full textChikhi, Mohamed. "Modélisation non paramétrique des processus stochastiques : analyse non paramétrique de la non linéarité de l'indice CAC40." Montpellier 1, 2001. http://www.theses.fr/2001MON10024.
Full textIn this work, we are interested in the nonparametric dynamic modelling of the stochastic processes. We try to exceed the traditional vision treating the observed fluctuations on the Parisian stock exchange market while seeking to identify the stock exchange CAC 40 series while holding account of the kernel method. In chapter 1, we specify the informational efficiency theory of the stock exchange markets by distinguishing the three usual categories of efficiency and study the anomalies in the stock exchange markets. In chapter 2, we test the weak from efficiency hypothesis by the various traditional tests of random walk and autocorrelation. Then, we apply two more powerful nonparametric tests : Mizrach and BDS tests. In a last time, we test if there is a type of long-term dependence by testing the fractional coefficient of integration and the long memory. .
Beaulieu, Frédéric. "Réduction non-linéaire du bruit et détection de non-stationnarité." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ53921.pdf.
Full textHarursampath, Dineshkumar. "Non-classical non-linear effects in thin-walled composite beams." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/12501.
Full textEl, Ouafdi Ahmed Fouad. "Méthodes primales-duales pour la programmation non linéaire non convexe." Mémoire, Université de Sherbrooke, 2003. http://savoirs.usherbrooke.ca/handle/11143/4589.
Full textHolmes, Dale Christopher. "Abstract realism : non-anthropocentric strategies for constructing non-relational artworks." Thesis, Sheffield Hallam University, 2013. http://shura.shu.ac.uk/19821/.
Full textIreka, Ikenna Ebubechukwu. "Computational analysis of non-isothermal flow of non-Newtonian fluids." Doctoral thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/15590.
Full textChang, Richard. "Etude des réseaux de caméras non synchronisées ou non calibrées." Paris 6, 2009. http://www.theses.fr/2009PA066024.
Full textMouzaoui, Lounès. "Régimes asymptotiques pour l'équation de Schrödinger non linéaire non locale." Thesis, Montpellier 2, 2013. http://www.theses.fr/2013MON20241/document.
Full textThis thesis is devoted to the study of some asymptotic regimes of the semi-classical Schrödinger equation, in the presence of a nonlocal nonlinearity of Hartree-type . The purpose of the first part, consisting of the first and second chapter is the study of the asymptotic behavior of the previous model with a singular kernel around the origin for an initial data asymptotically of WKB-type, in a weakly nonlinear regime. In the first chapter we show that under some regularity conditions on the initial data, the solution still is of WKB-type at leading order, a result that we get in the functional framework of the Wiener algebra . We give an alternative proof to the previous result in the particular case of the Schrödinger-Poisson equation in the functional framework of rescaled Sobolev space, where the consideration of correctors is necessary to construct an approximate solution to describe the solution at leading order.The second part of this thesis, the subject of the third chapter is devoted to the study the propagation of wave packets for a coupled system of Hartree equations in a semi-classical regime , in the presence of sub-quadratic external potentials. We describe analytically and numerically the asymptotic behavior of the leading order of the wave functions solution of the system, for an initial data in the form of wave packets for different sizes of nonlinearity.The final part consists of the fourth chapter and appendix.In the fourth chapter we consider the Cauchy problem of the Hartree equation with a homogeneous kernel or of Fourier transform in a Lebesgue space, in the functional framework of the Wiener algebra. We show some results on the well-posedness of the problem for the considered kernels, in spaces involving the Wiener algebra.We conclude with an appendix in which we consider the Cauchy problem for the Schrödinger-Poisson equation in the presence of a time independent external potential in the weighted Sobolev spaces. We extend the results already obtained on the existence of global solutions in Sobolev spaces without weight when the external potential is reduced to zero, by showing the existence of global solutions in time in the weighted Sobolev spaces for all regularity
El, Ouafdi Ahmed Fouad. "Méthodes primales-duales pour la programmation non linéaire non convexe." Sherbrooke : Université de Sherbrooke, 2003.
Find full textPechenik, Leonid. "Pattern formation and non-linear dynamics of non-equilibrium systems /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC IP addresses, 2000. http://wwwlib.umi.com/cr/ucsd/fullcit?p9970653.
Full textAlshaalan, Rasha. "Non-invasive diagnostic methods for non-alcoholic fatty liver disease." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=119567.
Full textContexte : La stéatose hépatique non alcoolique (SHNA) est l'une des causes les plus répandues des maladies du foie à l'échelle mondiale. Il s'agit d'un spectre de maladies qui se caractérise par une stéatose hépatique macrovésiculaire allant de la stéatose hépatique simple (stéatose) à la stéatohépatite non alcoolique (NASH). La NASH peut éventuellement évoluer vers une cirrhose et des complications en phase terminale. La biopsie du foie a longtemps été considérée comme la norme de référence par excellence pour le diagnostic de la SHNA, mais elle est coûteuse et invasive. Des méthodes non invasives ont récemment été proposées. Objectifs et méthodes : La présente étude avait pour objectif d'évaluer la précision de certaines méthodes non invasives (notamment les ultrasons [US], la tomographie par ordinateur [TO], la scintigraphie au xénon 133, l'indice de stéatose hépatique (ISH), la technique Fibroscan, le score de fibrose de SHNA, l'indice de ratio entre l'aspartate aminotransférase et les plaquettes [APRI] et l'indice FIB-4) et de l'utilisation combinée de ces méthodes pour le diagnostic de la stéatose et pour le diagnostic d'une fibrose hépatique significative (> F2) et de la cirrhose (F4), par comparaison à la biopsie du foie. Nous avons réalisé une étude rétrospective sur 114 patients atteints de NASH (79 patients de sexe masculin, âge moyen de 49,6 ans ± 10,6). Tous ces patients présentaient une histologie hépatique adéquate.Résultats : La répartition des stades de fibrose était la suivante : F0 F1 = 50 %, F2 = 16,8%, F3 = 19,2 %, F4 = 14 %. La répartition des stades de stéatose était la suivante : stade 0-1 = 16 %, stade 2 = 53,3 %, stade 3 = 30,7 %. Les tests suivants ont été mis en corrélation avec la fibrose : l'indice APRI (r = 0,554), l'indice FIB-4 (r = 0,555), le score de fibrose de SHNA (r = 0,473), la technique Fibroscan (r = 0,586) et l'indice de stéatose hépatique (r = 0,245). L'indice FIB-4 et l'indice APRI ont offert la meilleure précision diagnostique en ce qui concerne la fibrose significative, comme l'indiquent la surface sous la courbe (SSC) de 0,801 et la SSC de 0,782 respectivement. L'indice FIB-4 a présenté la meilleure SSC, soit 0,886, pour ce qui est de la cirrhose. Aucun des tests suivants, c'est à dire les tests aux US, la TO, l'ISH, et la scintigraphie au xénon 133, n'était considéré comme étant corrélé significativement. Le meilleur algorithme de combinaison pour le dépistage de la cirrhose était le sexe et l'indice FIB-4 avec une surface sous la courbe de 0,8937. Conclusion: cette étude démontre que les méthodes non invasives de diagnostic de la fibrose hépatique sont précises en ce qui concerne les stades > F2 et F4. La Stéatose sévère ne peut être diagnostiqué de façon fiable par des méthodes non invasives Notamment, une combinaison de l'indice FIB-4 et du sexe améliore considérablement le rendement de la méthode unique en ce qui a trait à la cirrhose. Ces méthodes pourraient aider à réduire le nombre de biopsies du foie visant à stratifier les patients atteints de NASH qui devraient entreprendre un programme de dépistage du carcinome hépatocellulaire (CHC) et des varices œsophagiennes.
Ltaief, Ali. "Synthèse d'observateurs pour les systèmes non linéaires, non uniformément observables." Thesis, Normandie, 2017. http://www.theses.fr/2017NORMC211/document.
Full textThe results given in this thesis deal with the design of high gain observers for some classes on Multi Input Multi Output non uniformly observable nonlinear systems. In a first step, the class of considered systems is such that the dynamics of the state variables is the sum of two terms. The first term is affine in the state and is composed by the product of a matrix, whose entries are nonlinear functions of the state with a triangular structure, by the state vector. The second term describes the system nonlinearities which also assume a triangular structure. The gain of the proposed observer is issued from the resolution of a Lyapunov ordinary differential equation. The exponential convergence of the underlying observation error is established under a persistent excitation condition involving the system inputs and the state of the observer. In a second step, the observer design has been extended to a larger class of nonlinear systems where some state variables may intervene in a non triangular way. The notion of the characteristic indices associated to these state variables is then introduced and it allowed to define an extended triangular structure for which a high gain observer has been designed. Finally, it has been established that the proposed observers can be used as adaptive ones to jointly estimate the system state together with some unknown parameters and an adaptive form of these observers has been derived. The performance and main properties of the proposed observers have been illustrated in simulation by considering many examples throughout this thesis
Frazer, Gordon John. "Aspects of time-varying non Gaussian non-linear signal analysis." Thesis, Queensland University of Technology, 1996. https://eprints.qut.edu.au/105546/1/T%28BE%26E%29%201032%20Aspects%20of%20time-varying%20non-Gaussian%20non-linear%20signal%20analysis.pdf.
Full textGondek, David. "Non-redundant clustering /." View online version; access limited to Brown University users, 2005. http://wwwlib.umi.com/dissertations/fullcit/3174612.
Full textPop, Cristina-Maria. "Non-equilibrium relaxation." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-151719.
Full textRoss, Skyler W. "Non-Euclidean Geometry." Fogler Library, University of Maine, 2000. http://www.library.umaine.edu/theses/pdf/RossSW2000.pdf.
Full textDowrick, Nigel. "Non-peturbative QCD." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236231.
Full textJones, Claire. "Probabilistic non-determinism." Thesis, University of Edinburgh, 1990. http://hdl.handle.net/1842/413.
Full textStainton, Robert James Harold. "Non-sentential assertions." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/12501.
Full textEgan, Andrew M. (Andrew Michael) 1970. "Non-standard features." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/30114.
Full textIncludes bibliographical references (p. 107-109).
The dissertation is composed of three papers on properties and their relatives. "Second-Order Predication and the Metaphysics of Properties" argues that giving a happy account of second-order predication motivates us to identify properties with functions from
by Andrew M. Egan.
Ph.D.
Sequeiros, Víctor Agustín. "Non omnis moriar." Doctoral thesis, Universidad Nacional de Cuyo. Facultad de Filosofía y Letras, 2011. http://bdigital.uncu.edu.ar/9196.
Full textLin, Shang-Hsiang, and 林上襄. "non." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/83096482275931265937.
Full textLiao, Kae-hung, and 廖啟宏. "non." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/72636715899115304920.
Full text