Relevant bibliographies by topics / Anisotropic energy / Dissertations / Theses
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Dissertations / Theses on the topic 'Anisotropic energy'

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Published: 18 May 2024

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1

Strümpfer, Johan. "Computing free energy hypersurfaces for anisotropic intermolecular associations." Master's thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/6290.

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Includes abstract.<br>Includes bibliographical references.<br>Adaptive reaction coordinate force biaisng methods have been previously used for calculating the free energy of conformation and chemical reactions amongst others. Here a generalized method is described that is able to produce free energies in multiple dimension, descriptively named the free energies from adaptive reaction coordinate forces (FEARCF) method. To illustrate it a multidemensional intermolecular orientational free energy surface is calculated, and it is demonstrated how to invesrigate complex systems such as protein conf
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2

Steiner, Pinckney Alston IV. "Anisotropic low-energy electron-enhanced etching of semiconductors in DC plasma." Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/27060.

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3

Cai, Renye. "Original strain energy density functions for modeling of anisotropic soft biological tissue." Thesis, Bourgogne Franche-Comté, 2017. http://www.theses.fr/2017UBFCA003/document.

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Cette thèse a porté sur la construction de densités d'énergie de déformation permettant de décrire le comportement non linéaire de matériaux anisotropes tels que les tissus biologiques souples (ligaments, tendons, parois artérielles etc.) ou les caoutchoucs renforcés par des fibres. Les densités que nous avons proposées ont été élaborées en se basant sur la théorie mathématique des polynômes invariants et notamment sur le théorème de Noether et l'opérateur de Reynolds. Notre travail a concerné deux types de matériaux anisotropes, le premier avec une seule famille de fibre et le second avec qua
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4

Fogli, Simone. "Forecasts on the dark energy anisotropic stress for the esa euclid survey." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/5614/.

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The cosmological constant Λ seems to be a not satisfactory explanation of the late-time accelerated expansion of the Universe, for which a number of experimental evidences exist; therefore, it has become necessary in the last years to consider alternative models of dark energy, meant as cause of the accelerated expansion. In the study of dark energy models, it is important to understand which quantities can be determined starting from observational data, without assuming any hypothesis on the cosmological model; such quantities have been determined in Amendola, Kunz et al., 2012. In the same p
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5

Xu, Hao. "Theoretical and numerical modeling of anisotropic damage in rock for energy geomechanics." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53035.

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At present, most of the energy power consumed in the world is produced by fossil fuel combustion, which has raised increasing interest in renewable energy technologies, non-conventional oil and gas reservoirs, and nuclear power. Innovative nuclear fuels and reactors depend on the economical and environmental impacts of waste management. Disposals in mined geological formations are viewed as potential consolidated storage facilities before final disposition. Different stress paths during construction result in different kinds of failure mechanisms, which alter rock strength and induce anisotrop
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6

Hamad, Wadwood Y. "Energy-balance equations for in-roll stresses for anisotropic materials in wound rolls." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60599.

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This Thesis concerns itself with the thorough investigation of the effects of core material parameters on the structural behaviour of wound rolls in core-roll winding systems. The underlying theme in this work is the derivation, based on the theory of elasticity, of an analytic expression for the core material's elasticity modulus as a function of only material parameters and geometry.<br>The approach undertaken herein is purely theoretical and encompasses the rigorous analysis of principally two models; linear isotropic and anisotropic. As for the former, both planar and axisymmetric geometri
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7

Pröchtel, Patrick. "Anisotrope Schädigungsmodellierung von Beton mit adaptiver bruchenergetischer Regularisierung Anisotropic damage modeling of concrete regularized by means of the adaptive fracture energy approach /." [S.l. : s.n.], 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1224751435667-29771.

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8

Gamieldien, Mogamat Riedaa. "Parameterization of the Gay-Berne coarse-grained potential from atomistically detailed anisotropic free energy volumes." Doctoral thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/10567.

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Includes bibliographical references.<br>Simulating a system of 300,000+ atoms, such as an explicitly solvated protein using all atom molecular dynamics on the microsecond time-scale, would require an enormous amount of computing power and specialized software, even with which would still require months of computing time. However, if the atomic degrees of freedom of the system can be reduced (or averaged) in some physically intuitive manner, while still retaining a connection with the underlying atomistic detail, microsecond simulations could be achieved within weeks or days. Coarse-graining, a
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9

Stevenson, Kip Patrick. "Anisotropic potential energy surfaces for atmospheric gas : unsaturated hydrocarbon molecule interactions from differential scattering experiments /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/11613.

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10

Li, Bin. "The variational approach to brittle fracture in materials with anisotropic surface energy and in thin sheets." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/393861.

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Fracture mechanics of brittle materials has focused on bulk materials with isotropic surface energy. In this situation different physical principles for crack path selection are very similar or even equivalent. The situation is radically different when considering crack propagation in brittle materials with anisotropic surface energy. Such materials are important in applications involving single crystals, extruded polymers, or geological and organic materials. When this anisotropy is strong, the phenomenology of crack propagation becomes very rich, with forbidden crack propagation directions o
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11

Ross, Ron S. "Planning minimum-energy paths in an off-road environment with anisotropic traversal costs and motion constraints." Thesis, Monterey, California. Naval Postgraduate School, 1989. http://hdl.handle.net/10945/26696.

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12

Fiz, González Raquel [Verfasser]. "Vapor Phase Growth of Anisotropic Metal Oxide Heterostructures: Growth Models, and Energy & Sensor Applications / Raquel Fiz González." München : Verlag Dr. Hut, 2014. http://d-nb.info/1050331591/34.

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13

Watanabe, T., H. Yokoyama, Y. Tanaka, and J. Inoue. "Predominant magnetic states in the Hubbard model on anisotropic triangular lattices." American Physical Society, 2008. http://hdl.handle.net/2237/11256.

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14

Knoke, Till [Verfasser], Heiko von der [Akademischer Betreuer] Mosel, and Alfred [Akademischer Betreuer] Wagner. "On the approximation of anisotropic energy functionals by Riemannian energies via homogenization / Till Knoke ; Heiko von der Mosel, Alfred Wagner." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1130326756/34.

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15

Lindberg, Maria. "Computer simulations of electronic energy transfer and a molecular dynamics study of a decapeptide." Doctoral thesis, Umeå universitet, Kemiska institutionen, 1991. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-118929.

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Electronic energy transfer has been investigated in pure donor systems by means of computer simulations. Calculated properties were the probability that the initially excited donor is excited at a time t after the excitation, Gs(t), the mean square displacement of the excitation and different fluorescence observables. For three dimensional systems the results obtained by Monte Carlo simulations were compared to the so-called GAF-theory {Gouchanour,C. R., Andersen, H. C. and Fayer, M. D., J. Chem. Phys. 81, 4380 (1984)}, and the agreement was found to be good. Anisotropic systems, i.e. mono-, b
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16

Chen, Kuan-Luen. "Evaluation of weight functions, stress intensity factors, and energy release rates for two-dimensional anisotropic structures by the alternating finite element method, the virtual crack extension tech." Diss., Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/21226.

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17

Melo, Marcelo Ferreira de. "Funcionais paramÃtricos elÃpticos em variedades riemannianas." Universidade Federal do CearÃ, 2009. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=4102.

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CoordenaÃÃo de AperfeiÃoamento de NÃvel Superior<br>Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>Neste trabalho, consideramos funcionais paramÃtricos elÃpticos como generalizaÃÃes naturais para o clÃssico funcional Ãrea. Calculamos a primeira variaÃÃo de tais funcionais e, a partir da equaÃÃo de Euler-Lagrange, definimos a curvatura mÃdia anisotrÃpica de uma hipersuperfÃcie imersa em uma variedade Riemanniana como generalizaÃÃo natural da curvatura mÃdia usual. Em seguida, estabelecemos a fÃrmula da segunda variaÃÃo e classificamos as hipersuperfÃcies rotacionalmente simÃtr
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18

Retinskaya, Ekaterina. "Reverse engineering of heavy-ion collisions : unraveling initial conditions from anisotropic flow data." Phd thesis, Université Paris Sud - Paris XI, 2014. http://tel.archives-ouvertes.fr/tel-01068777.

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Ultra-Relativistic heavy-ion physics is a promising field of high energy physics connecting two fields: nuclear physics and elementary particle physics. Experimental achievements of the last years have provided an opportunity to study the properties of a new state of matter created in heavy-ion collisions called quark-gluon plasma. The initial state of two colliding nuclei is affected by fluctuations coming from wave- functions of nucleons. These fluctuations lead to the momentum anisotropy of the hadronic matter which is observed by the detectors. The system created in the collision behaves l
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19

Simas, Emanuelle Reis. "Fotoquímica de polímeros conjugados contendo centros de transferência de carga e migração de energia." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/75/75131/tde-24032011-093724/.

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Neste trabalho foram estudados os processos de migração e transferência de energia em derivados de polifluoreno, de estrutura totalmente conjugada e de conjugação confinada. A dinâmica de estado excitado dos derivados PF-BNI, PFOPPV e PFPPV foi estudada em solução diluída de diferentes solventes através de espectroscopia eletrônica de alta resolução temporal. O derivado PF-BNI, contendo N-(2-benzotiazol)-1,8-naftalimida (BNI) como terminador da cadeia de poli(9,9\'dioctilfluoreno), foi sintetizado pela rota de Yamamoto. O material apresenta alto rendimento quântico de fluorescência e suas prop
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20

Wu, Yang. "Azimuthal anisotropy in gold-gold collisions at 4.5 GeV center-of-mass energy per nucleon pair using fixed-target mode at the Relativistic Heavy-Ion Collider." Kent State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=kent1562355001935965.

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21

Lam, Yukyam 1982. "Dark energy and CMB anisotropy." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/32743.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2004.<br>Includes bibliographical references (p. 59-60).<br>According to the WMAP and earlier COBE observations, the Cosmic Microwave Background (CMB) anisotropy power on large angular scales appears to be significantly lower than predicted by the standard model of cosmology. We propose a scalar field model of the dark energy as a mechanism for suppressing low l multipoles through late-Universe evolution of metric fluctuations and the integrated Sachs-Wolfe (ISW) effect. We find that for a constant dark energy equation of
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22

Yang, Lixiang. "Modeling Waves in Linear and Nonlinear Solids by First-Order Hyperbolic Differential Equations." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1303846979.

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23

Kumar, Deepak. "Thin film growth by combinatorial epitaxy for electronic and energy applications." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMC255.

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Les oxydes de métaux de transition à structure pérovskite ABO3 présentent des degrés de liberté structurels et électroniques fortement enchevêtrés. On s'attend donc à découvrir des phases et des propriétés exotiques en agissant sur le réseau par le biais de divers stimuli externes. L'ingénierie des contraintes épitaxiales dans les couches minces d'oxydes est un moyen important d'adapter la distorsion du réseau cristallin par l'effet coopératif de Jahn Teller. En utilisant les couches minces actives PrVO3 de Jahn Teller comme système modèle, la corrélation structurelle avec le magnétisme est ét
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24

Pascon, Aline Maria 1987. "Anisotropia de larga escala em raios cósmicos de altíssima energia no Observatório Pierre Auger." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/277557.

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Orientador: Carola Dobrigkeit Chinellato<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-08-12T14:28:59Z (GMT). No. of bitstreams: 1 Pascon_AlineMaria_M.pdf: 7108044 bytes, checksum: c42a3aa2a12d613b0ce9e4e8da6014dc (MD5) Previous issue date: 2008<br>Resumo: Foi aplicado o método de reconstrução de uma anisotropia de raios cósmicos para certo número de direções simuladas, a partir de uma distribuição consistindo de modulação dipolar sobreposta a um fluxo isotrópico. Usou-se o método proposto por J. Aublin e
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25

MORADI, KAMRAN. "Acoustic Manipulation and Alignment of Particles for Applications in Separation, Micro-Templating, and Device Fabrication." FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/1753.

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This dissertation studies the manipulation of particles using acoustic stimulation for applications in microfluidics and templating of devices. The term particle is used here to denote any solid, liquid or gaseous material that has properties, which are distinct from the fluid in which it is suspended. Manipulation means to take over the movements of the particles and to position them in specified locations. Using devices, microfabricated out of silicon, the behavior of particles under the acoustic stimulation was studied with the main purpose of aligning the particles at either low-pressure z
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26

Saoudi, Rania. "Comportement des matériaux magnétiques nanocristallins FeCuNbSiB lors du vieillissement sous contraintes thermique et électrique." Electronic Thesis or Diss., Lyon 1, 2023. http://www.theses.fr/2023LYO10132.

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Dans le contexte de l'augmentation de l'efficacité énergétique, les systèmes électriques passent par une conception très compactée afin de réduire leurs volumes et poids, spécifiquement dans les systèmes intervenant dans les transports (automobile, ferroviaire et aérien). Cette compacité amène les matériaux magnétiques des nouveaux convertisseurs électriques à fonctionner dans environnements sévères (hautes températures et hautes fréquences). Cette thèse est consacrée pour étudier le comportement dans le temps (vieillissement) des matériaux nanocristallins FeCuNbSiB dédié à la conception des t
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27

Mohammad, Nopoush. "NON-EQUILIBRIUM HYDRODYNAMICS OF THE QUARK-GLUON PLASMA." Kent State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=kent1554403936171225.

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28

Lauback, Stephanie Diane. "Magnetic Actuation of Biological Systems." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1494262695434601.

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29

Münchmeyer, Moritz. "Large-scale anisotropies in the high energy cosmic ray sky." Paris 6, 2012. http://www.theses.fr/2012PA066651.

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30

Boghrat, Pedram. "Search for ultra high energy cosmic ray anisotropy with Auger." Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1750728181&sid=5&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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31

Graham, Lilian Joan. "Ultra high energy gamma ray point sources and cosmic ray anisotropy." Thesis, Durham University, 1994. http://etheses.dur.ac.uk/5594/.

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The experimental set-up at the Baksan Air Shower Array, used to detect air showers above ~0.2xl0(^14)eV, is described. An estimation of the angular resolution using the cosmic ray shadow of the Sun and the Moon gives a value of ~2.5˚ which is consistent with previous estimates from Monte-Carlo simulations. Using data from this array covering 1985-1992, a search is made for 7-ray emission from 18 candidate sources. Upper limits to the flux from these sources are stated in all cases. A periodicity search is made on data for which the excess for a single transit of a particular source is above 3(
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32

Marquezin, Cássia Alessandra. "Técnicas de fluorescência no monitoramento de membranas modelo." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/59/59135/tde-26032009-154339/.

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Apresentamos os resultados de estudos sobre a utilização de técnicas baseadas no fenômeno de fluorescência para a investigação de processos relacionados a membranas modelo. Nessa investigação, estão envolvidas medidas de propriedades espectrais de absorção e emissão de luz por cromóforos adequados, determinação xperimental de perfis de decaimento temporal da fluorescência e correlação temporal de emissão fluorescente, bem como a utilização apropriada de metodologias para análise e interpretação dos dados experimentais. Foram utilizados diversos compostos que apresentam absorção e emissão na re
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33

Hamilton, Nicholas Michael. "Anisotropy of the Reynolds Stress Tensor in the Wakes of Counter-Rotating Wind Turbine Arrays." PDXScholar, 2014. https://pdxscholar.library.pdx.edu/open_access_etds/1848.

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A wind turbine array was constructed in the wind tunnel at Portland State University in a standard Cartesian arrangement. Configurations of the turbine array were tested with rotor blades set to rotate in either a clockwise or counter-clockwise sense. Measurements of velocity were made with stereo particle-image velocimetry. Mean statistics of velocities and Reynolds stresses clearly show the effect of direction of rotation of rotor blades for both entrance and exit row turbines. Rotational sense of the turbine blades is visible in the mean spanwise velocity W and the Reynolds shear stress -[m
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34

Bird, David John. "Arrival directions of medium energy cosmic rays in the southern hemisphere /." Title page, contents and summary only, 1991. http://web4.library.adelaide.edu.au/theses/09PH/09pb6178.pdf.

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35

Dundovic, Andrej [Verfasser], and Günter [Akademischer Betreuer] Sigl. "On Anisotropies of Ultra-high Energy Cosmic Rays / Andrej Dundovic ; Betreuer: Günter Sigl." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2018. http://d-nb.info/1162275243/34.

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36

Menon, Nanda. "A study of electronic structure anisotropy by spatially resolved electron energy loss spectroscopy." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624123.

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37

French, Jarin C. "Molecular Dynamics Studies of Anisotropy in Grain Boundary Energy and Mobility in UO₂." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/89643.

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Nuclear energy is a proven large-scale, emission-free, around-the-clock energy source. As part of improving the nuclear energy efficiency and safety, a significant amount of effort is being expended to understand how the microstructural evolution of nuclear fuels affects the overall fuel performance. Grain growth is an important aspect of microstructural evolution in nuclear fuels because grain size can affect many fuel performance properties. In this work, the anisotropy of grain boundary energy and mobility, which are two important properties for grain growth, is examined for the light water
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38

De, Domenico Manlio. "Propagation of Ultra-High Energy Cosmic Rays and anisotropy studies with the Pierre Auger Observatory: the multiscale approach." Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/992.

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The main goal of this thesis is the investigation of the arrival directions of ultra-high energy cosmic rays (UHECRs). The clustering of such events, collected by the Pierre Auger Observatory, is used to infer the nature of sources and their density, as well as other physical unknowns. Results are based on the comparison between real and simulated data. Hence, an ad hoc Monte Carlo code (HERMES) for the realistic simulation of UHECR propagation in the Universe and a novel method (MAF) to quantify the amount of clustering in a data set of few UHECR events have been developed. In the first chapt
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39

Keller, A. "Evolution of Ion-Induced Ripple Patterns - Anisotropy, nonlinearity, and scaling." Forschungszentrum Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-61101.

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This thesis addresses the evolution of nanoscale ripple patterns on solid surfaces during low-energy ion sputtering. Particular attention is paid to the long-time regime in which the surface evolution is dominated by nonlinear processes. This is explored in simulation and experiment. In numerical simulations, the influence of anisotropy on the evolution of the surface patterns in the anisotropic stochastic Kuramoto-Sivashinsky (KS) equation with and without damping is studied. For a strong nonlinear anisotropy, a 90 rotation of the initial ripple pattern is observed and explained by anisotrop
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Benoit, Jean-Pierre. "Étude expérimentale et théorique d'une turbulence homogène soumise à des effets couplés de rotation et de déformation plane." Ecully, Ecole centrale de Lyon, 1992. http://www.theses.fr/1992ECDL0026.

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L'étude théorique des caractéristiques anisotropes d'une turbulence homogène soumise à des gradients moyens plans est abordée dans l'espace spectral. Différents couplages du taux de rotation/déformation sont examinés de part et d'autre du cas central de cisaillement pur. La résolution du problème linéaire est réalisée sur l'équation du spectre de la fluctuation de vitesse. La solution numérique est détaillée dans le cas des écoulements elliptiques afin de faire le lien avec les études de stabilité de ces écoulements périodiques. L'approche non linéaire porte sur l'équation du tenseur spectral
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Short, Geoffrey. "Study of magnetic anisotropy by Magnetic Circular X-ray Dichroism." Thesis, University of York, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310961.

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Peixoto, Carlos Jose Todero. "Reconstrução de chuveiros atmosféricos extensos detectados pelo Observatório Pierre Auger utilizando métodos robustos." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/277465.

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Orientador: Carlos Ourivio Escobar<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-08-11T18:57:31Z (GMT). No. of bitstreams: 1 Peixoto_CarlosJoseTodero_D.pdf: 15351567 bytes, checksum: 33b4f282f53a5669d23f8170b3bbf392 (MD5) Previous issue date: 2008<br>Resumo: Desde os primeiros Raios Cósmicos de alta energia detectados por Pierre Auger na década de 30, toda a comunidade de Física de Radiação Cósmica procura técnicas matemáticas e métodos estatísticos mais adequados para analisar estes eventos. Estes processos de
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Salvador, Marcelo. "Distribuição de barreiras de energia de nanopartículas magnéticas em campo externo." reponame:Repositório Institucional da UFSC, 2014. https://repositorio.ufsc.br/xmlui/handle/123456789/128600.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Física, Florianópolis, 2014.<br>Made available in DSpace on 2015-02-05T20:09:47Z (GMT). No. of bitstreams: 1 327324.pdf: 3541315 bytes, checksum: 6521363a229cc4e9ee23484c98698dde (MD5) Previous issue date: 2014<br>Neste trabalho estudamos o comportamento da magnetização de um sistema de nanopartículas magnéticas não interagentes, monodomínio, com anisotropia uniaxial. Foram realizadas simulações de Monte Carlo através do algoritmo de Metropolis para analisar
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Vachhani, Shraddha J. "Stored energy maps in deformed metals using spherical nanoindentation." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/51813.

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Microstructure changes that occur during the deformation and heat treatments involved in wrought processing of metals are of central importance in achieving the desired properties or performance characteristics in the finished products. However, thorough understanding of the evolution of microstructure during thermo-mechanical processing of metallic materials is largely hampered by lack of methods for characterizing reliably their local (anisotropic) properties at the sub-micron length scales. Recently, remarkable advances in nanoindentation data analysis techniques have been made which now ma
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Ballardini, Mario <1986&gt. "Cosmological Constraints on Cosmic Inflation and Scalar-Tensor Dark Energy Models from CMB Anisotropies and Galaxy Clustering." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7764/1/Thesis.pdf.

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This thesis investigates the most recent cosmological bservations in order to constrain cosmic inflation and what is probably the simplest model of modified gravity. We provide a detailed calculation for the scalar spectral index and for the tensor-to-scalar ratio, in slow-roll approximation, for a selection of single field inflationary models and we compare them with Planck 2015 data, taking into account reheating uncertainties. We studied selected theoretically motivated parametrizations of the primordial power spectrum with departure from the near scale invariance, providing a better
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Zhang, Hongbin. "Relativistic Density Functional Treatment of Magnetic Anisotropy." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-25132.

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Spin-orbit coupling (SOC) reduces the spatial symmetry of ferromagnetic solids. That is, the physical properties of ferromagnetic materials are anisotropic, depending on the magnetization direction. In this thesis, by means of numerical calculations with full-relativistic density functional theory, we studied two kinds of physical properties: surface magnetic anisotropy energy (MAE) and anisotropic thermoelectric power due to Lifshitz transitions. After a short introduction to the full-relativistic density functional theory in Chapter 2, the MAE of ferromagnetic thin films is studied in Chapte
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47

Tristram, Matthieu. "De Archeops à Planck : analyse des anisotropies du fond diffus cosmologique." Phd thesis, Université Joseph Fourier (Grenoble), 2005. http://tel.archives-ouvertes.fr/tel-00011003.

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L'analyse des anisotropies du fond diffus cosmologique (CMB) en température et en polarisation permet de contraindre une grande partie des paramètres cosmologiques décrivant le modèle du Big-Bang et l'Univers primordial. Cette thèse s'articule autour des mesures de l'expérience embarquée en ballon Archeops et de la future mission satellite Planck dont Archeops est le prototype. <br />Après une description générale du modèle standard en cosmologie et de la physique du CMB, cette thèse aborde plus particulièrement le mécanisme de "reheating" qui, à la fin de l'inflation, permet le réchauffement
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48

Ohlson, Alice Elisabeth. "Investigating Parton Energy Loss in the Quark-Gluon Plasma with Jet-hadron Correlations and Jet Azimuthal Anisotrophy at STAR." Thesis, Yale University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3578426.

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<p>In high-energy collisions of gold nuclei at the Relativistic Heavy Ion Collider (RHIC) and of lead nuclei at the Large Hadron Collider (LHC), a new state of matter known as the Quark-Gluon Plasma (QGP) is formed. This strongly-coupled, deconfined state of quarks and gluons represents the high energy-density limit of quantum chromodynamics. The QGP can be probed by high-momentum quarks and gluons (collectively known as partons) that are produced in hard scatterings early in the collision. The partons traverse the QGP and fragment into collimated "jets" of hadrons. Studies of parton energy lo
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El, Amraoui Rachid. "Etude de modèles de turbulence pour application aux écoulements à masse volumique variable avec et sans combustion." Rouen, 1993. http://www.theses.fr/1993ROUES029.

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Dans ce mémoire, nous avons testé les performances et évalué la capacité des modèles classiques de turbulence pour prédire les écoulements turbulents à masse volumique constante et variable soit par mélange de gaz de masses molaires différentes soit par dégagement de chaleur (combustion). Ainsi, les modèles k-epsilon et ASM formulés en moyenne de Favre (moyenne pondérée par la masse) sont mis en oeuvre et implantés dans un code de combustion turbulente. 3 types d'écoulement ont été choisis pour la validation de ces 2 modèles. Les résultats du calcul de l'écoulement d'air isotherme derrière la
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50

Sophys, Gabriel. "Formation of a Quark-Gluon-Plasma : understanding the energy and system size dependence." Thesis, Nantes, 2018. http://www.theses.fr/2018NANT4057/document.

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La ChromoDynamique Quantique (CDQ) décrit les interactions entre les partons. Ces partons sont confinés dans les hadrons, cependant la CDQ prédit un nouvel état de la matière où les partons sont dé-confinés des hadrons : Le Plasma de Quarks et de Gluons (PQG). L'étude du PQG est un axe de recherche challengeant puisque l'on observe expérimentalement les hadrons et non les partons. Dans cette thèse, j'étudie les anisotropies des angles azimutaux de la production de particule qui est directement liée à l'anisotropie du fluide. Cette anisotropie, due à une anisotropie spatiale initiale, donne des
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