Relevant bibliographies by topics / Anisotroping / Dissertations / Theses
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Dissertations / Theses on the topic 'Anisotroping'

Author: Grafiati
Published: 6 July 2022
Last updated: 31 July 2025

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1

Touil, Hatem. "Modélisation spectrale de la turbulence inhomogène anistrope." Ecully, Ecole centrale de Lyon, 2002. http://www.theses.fr/2002ECDL0020.

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Ce travail de thèse porte sur le développement d'un modèle pour la turbulence anisotrope et inhomogène au moyen d'une approche statistique spectrale. La variable de base de ce nouveau modèle est le spectre du tenseur de Reynolds, quantité qui dépend des variables d'espace et du temps, mais aussi du module du vecteur d'onde. Ce travail s'appuie sur les fondements théoriques posés par A. Laporta (1995) pour le développement autour de l'homogénéité des équations des corrélations en deux points et sur les travaux de S. Parpais (1996) pour la modélisation des termes les plus complexes mis à jour da
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2

Vallefuoco, Donato. "Numerical study of unconfined and confined anisotropic turbulence." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEC053/document.

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Pour les écoulements turbulents d’intérêt pratique, la turbulence interagit avec le confinement et les forces externes, ce qui cause inhomogénéité et anisotropie statistiques. Isoler leur contribution à des statistiques ciblées est indispensable pour comprendre les différents phénomènes physiques. Le but de cette thèse a donc été d’acquérir une meilleure connaissance de l’anisotropie en fonction de la direction et de l’échelle dans un ensemble de contextes idéalisés et réalistes. On a utilisé une caractérisation statistique dans l’espace spectral ainsi que dans l’espace de séparation. La carac
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3

Xia, Chao [Verfasser], and Guofang [Akademischer Betreuer] Wang. "On a class of anisotropic problems = Über eine Klasse von anisotropen Problemen." Freiburg : Universität, 2012. http://d-nb.info/1123470936/34.

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4

Ferraro, Filippo Jacopo. "Magnetic anisotropies and exchange bias in ultrathin cobalt layers for the tunnel anisotropic magnetoresistance." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAY086/document.

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Dans le cadre de l’étude des phénomènes magnétiques et de la spintronique qui sont présents aux échelles nanoscopiques nous avons étudié différents aspects des structures asymétriques de Pt/Co/AlOx. L’un des objectifs de cette thèse est le contrôle de l’oxydation et des propriétés magnétiques de ces multicouches. Nous avons combiné les mesures de structures (réflexion de Rayon-X), transports (Effet Hall anormal), et magnétiques (VSM-SQUID) afin de déterminer les rôles des effets magnétiques et d’interfaces. Un objectif était d’analyser le rôle de quelques monocouches (MCs) de CoO (qui peut se
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5

Hucht, Alfred. "Temperaturabhängigkeit magnetischer Anisotropien in ultradünnen Filmen - Temperature dependence of magnetic anisotropies in ultra-thin films." Gerhard-Mercator-Universitaet Duisburg, 2001. http://www.ub.uni-duisburg.de/ETD-db/theses/available/duett-09132001-105033/.

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Anisotropies essentially affect magnetism in thin ferromagnetic films of few atomic layers. On the one hand they can stabilize long range order in these systems, on the other hand they strongly influence the orientation of magnetization. The intrinsic causes of anisotropies in these systems are the spin-orbit coupling of the electrons and the long-range magnetic dipole interaction. While the dipole interaction always favors an orientation of magnetization in the plane of the film, spin-orbit coupling can favor different orientations of magnetization on the surface and in the inner layers of th
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6

Carlioz, Thomas. "Nucléation et propagation de fissures en conditions anisotropes." Thesis, Paris Est, 2017. http://www.theses.fr/2017PESC1247/document.

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En partant d'une problématique industrielle correspondant à la naissance de fissures lors de l'excavation d'un tunnel dans un matériau argileux, nous proposons de nous intéresser à un sujet plus large qui est celui de la nucléation d'une fissure de dimension macroscopique. Ainsi, des résultats généraux et théoriques sont établis tout au long de ce mémoire. Ces derniers sont toutefois utilisés pour proposer une interprétation aux faciès de fissuration observés lors de l'excavation de galeries de stockage à grandeur profondeur. Dans un premier temps, un modèle géométrique idéalisé pour des fissu
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7

Briones, Edgar. "Anisotropie de magnéto-résistance de diodes tunnel ferromagnétiques zener-esaki p-GaMnAs/n-GaAs : spectroscopie des anisotropies de bandes de GaMnAs." Paris 11, 2010. http://www.theses.fr/2010PA112074.

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GaMnAs est un semi-conducteur ferromagnétique dilué où l’interaction d’échange est induite par des porteurs délocalisés. Ces derniers sont souvent décrits par des états de Bloch dans la bande de valence, malgré une controverse sur l’influence d’une mini-bande d’impuretés Mn. Une connaissance plus précise de la structure de bandes reste nécessaire pour déterminer à la fois la position du niveau de Fermi et la nature exacte des anisotropies magnétiques, encore mal connues. Nous avons étudié l’anisotropie de magnétorésistance en régime tunnel (TAMR) de diodes Zener-Esaki p++-GaMnAs/n+-GaAs, relié
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8

Vallereau, Robin. "Fabrication additive d'aimants liés anisotropes par dépôt de fil fondu." Electronic Thesis or Diss., Université Grenoble Alpes, 2024. http://www.theses.fr/2024GRALI012.

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Les aimants permanents anisotropes à base de terres rares possèdent d’excellentes propriétés magnétiques et sont de ce fait utilisés dans de nombreux dispositifs électromécaniques tels que les moteurs, actionneurs, générateurs, et même aux petites dimensions dans les microsystèmes électromécaniques. On les retrouve sous forme frittée ou liée. Bien que les aimants liés soient moins aimantés que les frittés puisque dilués dans une matrice polymère, ils ont l’avantage de pouvoir être fabriqués en très grande série par moulage par injection et peuvent être de forme complexe. Cependant la productio
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9

Gebbie, Tim. "Temperature anisotropies: covariant CMB anisotropies and nonlinear corrections." Doctoral thesis, Faculty of Science, 1999. http://hdl.handle.net/11427/30218.

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The questions I ask myself are generally all along the lines of "so where did all this structure come from?". I hoped that work in the CMB and its cosmological implications would give me insight into this. It is an adventure that is still young. I began my PhD with an investigation of some formal aspects of Ehlers-Ellis Relativistic Kinetic Theory in mind { the implications of the truncation conditions found in the exact theory. I ended up trying to calculate CMB anisotropies as an application of this beautiful and somewhat purist formalism. The Ehler-Ellis (1+3) Lagrangian approach to General
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10

Penkrot, Brian. "Anisotropic streaming." Diss., University of Iowa, 2014. https://ir.uiowa.edu/etd/4715.

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My work Anisotropic Streaming is written for the University of Iowa Symphonic Orchestra. It is approximately 16 minutes in length. The inspiration of the piece was the cosmic background radiation remaining from the Big Bang. In 1964, it was discovered that space was filled with a faint amount of radiation; a relic from the time when slight temperature variance allowed for the coalescence of particles. These particle collections soon had varying masses and therefore varying gravitational pulls, which in turn created the stars and galaxies. Since the universe expanded while the temperature varia
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11

Azevedo, Carlos Alberto Cabral de. "Formulação alternativa para análise de domínios não-homogêneos e inclusões anisotrópicas via MEC." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-18102007-110753/.

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Este trabalho trata da análise de problemas planos de chapa compostos por materiais anisotrópicos, definidas em uma região ou no domínio por completo, utilizando-se o método dos elementos de contorno. As soluções fundamentais para problemas anisotrópicos, embora existentes, mostram-se difíceis de serem utilizadas devido à complexidade de sua formulação matemática ou da necessidade de se encontrar partes da solução numericamente. Nesse sentido, a formulação alternativa mostrada nesse trabalho permite o estudo de meios anisotrópicos utilizando-se as soluções fundamentais para meios isotrópicos n
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12

Holínková, Petra. "Technika anisotropie a časově rozlišené anisotropie ve výzkumu koloidních systémů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2014. http://www.nusl.cz/ntk/nusl-217034.

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In this diploma thesis were investigated in terms of microviscosity liquid and condensed systems composed of hyaluronan (Hya) and cationic surfactant cetyltrimethylammonium bromide (CTAB). The excitation and emission spectra, lifetime, steady-state fluorescence anisotropy and time-resolved fluorescence anisotropy of the samples were measured. First, was studied the formation of hydrophobic domains in the system Hya-CTAB at concentration of CTAB lower than its critical micelle concentration in an aqueous solution and 0.15M NaCl. It was found that in an aqueous solution small hydrophobic domains
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13

Tarkhanov, Nikolai. "Anisotropic edge problems." Universität Potsdam, 2002. http://opus.kobv.de/ubp/volltexte/2008/2628/.

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We investigate elliptic pseudodifferential operators which degenerate in an anisotropic way on a submanifold of arbitrary codimension. To find Fredholm problems for such operators we adjoint to them boundary and coboundary conditions on the submanifold.The algebra obtained this way is a far reaching generalisation of Boutet de Monvel's algebra of boundary value problems with transmission property. We construct left and right regularisers and prove theorems on hypoellipticity and local solvability.
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14

Corvera, Poiré Eugenia. "Anisotropic viscous fingering." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=29002.

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We have qualitatively explained the experiments of McCloud and Maher (McCloud and Maher (95)) for the viscous fingering problem in which an anisotropy in the surface tension parameter was imposed by engraving a grid in one of the plates of the Hele-Shaw cell. We saw the need to approach the problem in an analytical form. Therefore we decided to extend solvability theory to incorporate the effect of anisotropy. We have introduced the anisotropy through a moving boundary condition by considering an effective anisotropic surface tension with an anisotropy entering as the simplest cosine term havi
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15

Ganguly, Chandrima. "Anisotropic cyclic cosmologies." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/278655.

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Standard models of cosmology use inflation as a mechanism to resolve the isotropy and homogeneity problem of the universe as well as the flatness problem. However, due to various well known problems with the inflationary paradigm, there has been an ongoing search for alternatives. Perhaps the most famous among these are the cyclic universe scenarios which incorporate bounces. As these scenarios have a contracting phase in the evolution of the universe, anisotropies and inhomogeneities would be expected to blow up on approach to the bounce. Thus, it is reasonable to ask whether the problems of
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16

Lam, Wai Sze Tiffany. "Anisotropic Ray Trace." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/556957.

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Optical components made of anisotropic materials, such as crystal polarizers and crystal waveplates, are widely used in many complex optical system, such as display systems, microlithography, biomedical imaging and many other optical systems, and induce more complex aberrations than optical components made of isotropic materials. The goal of this dissertation is to accurately simulate the performance of optical systems with anisotropic materials using polarization ray trace. This work extends the polarization ray tracing calculus to incorporate ray tracing through anisotropic materials, includ
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17

Chen, Xiaoming. "Two-dimensional constrained anisotropic inversion of magnetotelluric data." Phd thesis, Universität Potsdam, 2012. http://opus.kobv.de/ubp/volltexte/2012/6316/.

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Tectonic and geological processes on Earth often result in structural anisotropy of the subsurface, which can be imaged by various geophysical methods. In order to achieve appropriate and realistic Earth models for interpretation, inversion algorithms have to allow for an anisotropic subsurface. Within the framework of this thesis, I analyzed a magnetotelluric (MT) data set taken from the Cape Fold Belt in South Africa. This data set exhibited strong indications for crustal anisotropy, e.g. MT phases out of the expected quadrant, which are beyond of fitting and interpreting with standard isotr
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18

Daffé, Niéli. "Anisotropies and Magnetic Couplings of Texturable Ferrofluids." Electronic Thesis or Diss., Paris 6, 2016. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2016PA066640.pdf.

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Les ferrofluides sont des suspensions colloïdales de nanoparticules magnétiques dispersées dans un liquide porteur. La possibilité de moduler les propriétés des ferrofluides in situ en appliquant un champ magnétique externe leur procure un fort potentiel d’étude, à la fois d’un point de vue fondamental ou pour des applications industrielles variées. En particulier, les nanospinels de ferrite ferrimagnétiques MFe2O4 (M = Fe2+, Co2+, Mn2+…) sont largement étudiés pour leurs propriétés électriques et magnétiques. Plus spécifiquement, une forte énergie d’anisotropie de ces matériaux à l’échelle na
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19

Van, der Kelen Christophe. "Vibro-acoustic modelling of anisotropic poroelastic materials : characterisation of the anisotropic properties." Doctoral thesis, KTH, MWL Strukturakustik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-137809.

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The present-day challenges in the transport industry, steered by the increasing environmental awareness, necessitate manufacturers to take measures to reduce emissions related to the movements of goods and humans. In particular, the measures aiming at a reduced mass or higher load capacity to increase fuel efficiency,  generally deteriorate the noise and vibration insulation properties of their products. In order to comply with the regulations and customer demands, modern vehicles increasingly move towards a multifunctional integrated design approach, if possible for all subcomponents involved
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20

Yamashita, Tatsuya. "Analysis of anisotropic material." Ohio : Ohio University, 1996. http://www.ohiolink.edu/etd/view.cgi?ohiou1177700236.

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21

Rabarison, Andrianarivo Fabien. "Anisotropic piecewise linear approximation." Thesis, University of Strathclyde, 2012. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=18961.

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The subject of this thesis includes the design of new partitioning methods for the approximation of a function f on a domain C Rd, d 2, by piecewise linear functions, and the derivation of errors estimations in Lp-norm and W1 p - seminorm. In the two-dimensional setting, we develop a construction of a sequence of anisotropic triangulations, where the approximation provided by the piecewise linear interpolant for a given f C2() with a positive definite Hessian, is asymptotically optimal in Lp-norm and in the same time optimal in W1 p - seminorm with respect to the number of degrees of freedom.
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22

Ludovico, Benfenati Andrea. "Anisotropic Three-Component Superconductors." Thesis, KTH, Fysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-233562.

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23

Apel, T., and S. Nicaise. "Elliptic problems in domains with edges: anisotropic regularity and anisotropic finite element meshes." Universitätsbibliothek Chemnitz, 1998. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-199800553.

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This paper is concerned with the anisotropic singular behaviour of the solution of elliptic boundary value problems near edges. The paper deals first with the description of the analytic properties of the solution in newly defined, anisotropically weighted Sobolev spaces. The finite element method with anisotropic, graded meshes and piecewise linear shape functions is then investigated for such problems; the schemes exhibit optimal convergence rates with decreasing mesh size. For the proof, new local interpolation error estimates in anisotropically weight
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24

Belijar, Guillaume. "Anisotropic composite elaboration and modeling : toward materials adapted to systems." Thesis, Toulouse 3, 2016. http://www.theses.fr/2016TOU30353/document.

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L'objectif de ces travaux de thèse a été de démontrer la possibilité, en se basant sur une approche prédictive, de contrôler avec précision la fonctionnalisation d'un matériau composite, d'isotrope à anisotrope, sous l'application d'un champ électrique. Ces derniers matériaux présentent en effet un fort potentiel pour des applications futures telles que des condensateurs intégrés ou bien encore des composites conducteurs thermiques. Une première approche théorique des différentes forces et mécanismes entrant en jeux lors de l'élaboration de composites anisotropes par chaînage a permis d'identi
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Zeissler, Alexander. "Untersuchungen zum spannungsabhängigen Materialverhalten von Asphalt." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-167970.

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Mit dem Einzug numerischer Verfahren zur Dimensionierung von Verkehrskonstruktionen, im Speziellen für Asphaltbefestigung, werden charakteristische Materialkenngrößen benötigt. Des Weiteren wird mit der fortschreitenden Entwicklung von FEM-Programmen, die in Zusammenhang mit Strukturanalysen und Simulationsrechnungen ihren Einsatz finden, die Kenntnis detaillierter Materialkennwerte essentiell. Dass Asphalte mit ihrem charakteristischen Materialverhalten eine Temperatur- und Frequenzabhängigkeit aufweisen, ist anerkannter Stand von Wissenschaft und Technik. In Bezug auf weitere Einflussgrößen
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26

Lahav, Ofer. "Anisotropies in the local universe." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279690.

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27

Armand, Johnnier Pérez. "Anisotropias no fluxo de Raios Cósmicos de Ultra Altas Energias." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-03052018-154728/.

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O objetivo desta dissertação é a busca de anisotropias em grandes escalas angulares no fluxo de raios cósmicos acima de 4 × 10^{18} eV e o confronto dos resultados obtidos com as previsões dos principais modelos astrofísicos na região de ultra altas energias. Com esse propósito foram analisados os dados de chuveiros atmosféricos extensos registrados pelo Observatório Pierre Auger no período de 01 de janeiro de 2004 até 31 de agosto de 2016, compreendendo um total de 108 480 eventos detetados com ângulos zenitais entre 0 e 80 graus acima de 4 × 10^{18} eV. Efeitos sistemáticos locais como a in
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28

Hinrichs, Stephan [Verfasser]. "Synthesis and characterization of anisotropic iron oxides and their incorporation into a thermoresponsive matrix : Synthese und Charakterisierung von anisotropen Eisenoxiden und ihr Einbau in eine thermoresponsive Matrix / Stephan Hinrichs." Hamburg : Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky, 2020. http://d-nb.info/1225041988/34.

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29

Dinh, Quoc Dan. "Brazilian test on anisotropic rocks." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2011. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-76331.

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The present work describes investigations on the anisotropic strength behavior of rocks in the splitting tensile test (Brazilian test). Three transversely isotropic rocks (gneiss, slate and sandstone) were studied in the Lab. A total of more than 550 indirect tensile strength tests were conducted, with emphasis was placed on the investigation of the influence of the spatial position of anisotropic weakness plane to the direction of the load on the fracture strength and fracture or fracture mode. In parallel, analytical solutions were evaluated for stress distribution and developed 3D numerical
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Jentsch, L., and D. Natroshvili. "Thermoelastic Oscillations of Anisotropic Bodies." Universitätsbibliothek Chemnitz, 1998. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-199800871.

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The generalized radiation conditions at infinity of Sommerfeld-Kupradze type are established in the theory of thermoelasticity of anisotropic bodies. Applying the potential method and the theory of pseudodifferential equations on manifolds the uniqueness and existence theorems of solutions to the basic three-dimensional exterior boundary value problems are proved and representation formulas of solutions by potential type integrals are obtained.
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31

Schalij, Martin Jan. "Anisotropic conduction and ventricular tachycardia." Maastricht : Maastricht : Rijksuniversiteit Limburg ; University Library, Maastricht University [Host], 1988. http://arno.unimaas.nl/show.cgi?fid=5443.

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32

Wang, Yajun. "Path problems in anisotropic regions /." View abstract or full-text, 2008. http://library.ust.hk/cgi/db/thesis.pl?CSED%202008%20WANGY.

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33

Pagnutti, Douglas. "Anisotropic adaptation: metrics and meshes." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/415.

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We present a method for anisotropic mesh refinement to high-order numerical solutions. We accomplish this by assigning metrics to vertices that approximate the error in that region. To choose values for each metric, we first reconstruct an error equation from the leading order terms of the Taylor expansion. Then, we use a Fourier approximation to choose the metric associated with that vertex. After assigning a metric to each vertex, we refine the mesh anisotropically using three mesh operations. The three mesh operations we use are swapping to maximize quality, inserting at approximate circumc
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Kuntanawat, Panwong. "Cell response to anisotropic surfaces." Thesis, University of Glasgow, 2010. http://theses.gla.ac.uk/1885/.

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Cell-substrate interactions are of interest in modern biology. The system of surface bound hydrogels is commonly used as a cell culture surface in the field of cell biomechanics. However, the effect gel geometry (thickness, width and length) has on both the mechanics of the gel and the cells behaviour has usually been ignored. It was discovered that a cell differentially spreads and preferentially accumulates at a certain position with respect to the local variation in thickness along a wedge gel (thickness varied from ~50 to 400 µm). This happened although this range of thickness is supposed
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Thornley, Sarah. "Crystallisation from anisotropic polyethlene melts." Thesis, University of Reading, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494778.

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Research was directed towards further understanding the process of templating, whereby the crystallisation of the bulk material (branched polyethylene) Is altered from unoriented to oriented after melt shear by mapping it on to a pre-existing minority structure (linear polyethylene). Due to the rotational component in shear flow It Is considered a weaker flow, as compared to elongatlonal flow, for providing chain extension. Removal of the rotational component might lead to higher levels of anisotropy being detected in the melt, thus aiding in the understanding of templating. This was achieved
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Bondok, Abdelaziz Rizk. "Constitutive relations for anisotropic soils." Thesis, Cardiff University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329603.

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Simmonds, Paul Stuart John. "Theoretical studies of anisotropic fluids." Thesis, University of Southampton, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314781.

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Skea, T. "Anisotropic cosmology and curvature invariants." Thesis, University of Sussex, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381633.

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SENHORINI, KATHY CAMILA CARDOZO OSINSKI. "ANISOTROPIC DIELECTRIC CORRUGATED CYLINDRICAL GUIDE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=19725@1.

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PROGRAMA NACIONAL DE COOPERAÇÃO ACADÊMICA<br>Esta tese apresenta uma análise de uma estrutura de corneta cônica corrugada com dielétrico anisotrópico, com eixo óptico na direção axial da corneta. Esta configuração de corneta pode ser conseguida utilizando-se a estrutura de uma corneta corrugada com a adição de um cone dielétrico anisotrópico uniaxial. A anisotropia pode ser conseguida artificialmente dopando-se o material dielétrico isotrópico ou utilizando-se uma técnica de perfuração na direção axial do cone. Esta técnica de perfuração é sugerida e apresentada nesta Tese. Partindo-se da geom
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Benedict, Mark Douglas. "Advances in anisotropic particulate simulation." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612000.

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41

Hobbs, Neil Townsend. "Anisotropic etching for silicon micromachining." Thesis, Virginia Tech, 1994. http://hdl.handle.net/10919/40632.

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<p>Silicon micromachining is the collective name for several processes by which three dimensional structures may be constructed from or on silicon wafers. One of these processes is anisotropic etching, which utilizes etchants such as KOH and ethylene diamine pyrocatechol (EDP) to fabricate structures from the wafer bulk. This project is a study of the use of KOH to anisotropically etch (lOO)-oriented silicon wafers. The thesis provides a thorough review of the theory and principles of anisotropic etching as applied to (100) wafers, followed by a few examples which serve to illustrate the theor
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42

Al-Rkaby, Alaa H. J. "Anisotropic Characterisation of Reinforced Sand." Thesis, Curtin University, 2018. http://hdl.handle.net/20.500.11937/69352.

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Soil reinforcement is widely used in many geo-structures that induce complex anisotropic conditions, i.e. principal stresses with different directions α, different intermediate principal stress parameters b and/or cyclic rotation of the principal stress direction. The Results of this thesis improve the understanding of anisotropic three-dimensional stress states, σ1 ≠ σ2 ≠ σ3, on the characterization of reinforced sand so that solid designs and analyses of reinforced geostructures can be achieved.
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43

Cooke, Tristrom Peter. "Some problems in anisotropic elasticity /." Title page, contents and summary only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09phc773.pdf.

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44

Koabaz, Mahmoud. "Contribution à l’étude des ondes de LAMB dans une plaque anisotrope : théorie et expérience." Thesis, Bordeaux 1, 2010. http://www.theses.fr/2010BOR14071/document.

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Le rayonnement d'une source ultrasonore située sur l'une des interfaces d'une plaque anisotrope est étudié. Le calcul du tenseur de Green est effectué dans le cas général d'un problème 3D. Une décomposition en multiples réflexions /réfractions, constituant une série de rayons au sein de la plaque, est utilisée pour une comparaison théorie-expérience dans le cas d'un mono cristal de Cuivre. La vitesse de phase et la vitesse d'énergie sont mesurées en fonction de la fréquence ou de la direction d'observation, pour une plaque de carbone-époxy unidirectionnels, et comparées avec la théorie<br>The
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45

Hucht, Alfred. "Temperaturabhängigkeit magnetischer Anisotropien in ultradünnen Filmen." [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=958788898.

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46

Vaz, Carlos Antonio Fernandes. "Interface anisotropies in ultrathin magnetic films." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620969.

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47

Santos, Antonio Domingues dos. "Anisotropias induzidas em ligas ferromagnéticas amorfas." Universidade de São Paulo, 1991. http://www.teses.usp.br/teses/disponiveis/43/43133/tde-17072012-113147/.

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Apresentaremos uma série de estudos realizados sobre o tema anisotropias magnéticas induzidas (Kind) em 1igas amorfas. Foram usados vários tipos de tratamentos térmico, com o objetivo de obtermos uma visão amp1a do assunto. A análise teórica dos dados de Kind e de \"after-effect\" magnético (MAE) foi feita com um modelo baseado em sistemas de dois níveis (TLS). A partir da análise dos dados experimentais obtém-se um largo espectro de energias de ativação. Estas energias estão relacionadas aos tempos de re1axação, através da equação de Arrhenius: = 0 exp (E/kT), onde o pré-fator 0 é da ord
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Rosa, Diego Saldanha da. "Estudo de exchange bias via magnetorresistência anisotrópica." Universidade Federal de Santa Maria, 2013. http://repositorio.ufsm.br/handle/1/9237.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Anisotropic magnetoresistance (AMR) corresponds to the change of R in an ferromagnetic material with the angle between electric current and magnetization. Sensors using this effect are suited to detect both angular and linear displacements. In this work, structural, magnetic and electric characterization were performed in order to study the exchange interaction between antiferromagnetic IrMn and ferromagnetic NiFe, in a bilayer and a multilayer. Simulations of the AMR measurements were performed and showed good agreement with the e
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Daffé, Niéli. "Anisotropies and Magnetic Couplings of Texturable Ferrofluids." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066640/document.

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Les ferrofluides sont des suspensions colloïdales de nanoparticules magnétiques dispersées dans un liquide porteur. La possibilité de moduler les propriétés des ferrofluides in situ en appliquant un champ magnétique externe leur procure un fort potentiel d’étude, à la fois d’un point de vue fondamental ou pour des applications industrielles variées. En particulier, les nanospinels de ferrite ferrimagnétiques MFe2O4 (M = Fe2+, Co2+, Mn2+…) sont largement étudiés pour leurs propriétés électriques et magnétiques. Plus spécifiquement, une forte énergie d’anisotropie de ces matériaux à l’échelle na
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50

Krause, Jens. "On boundary conforming anisotropic delaunay meshes /." Zürich, 2001. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=14219.

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