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Tesi sul tema "Orbit method"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 2 febbraio 2022

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1

Mohamed, Ben Hadj Rhouma. "On the continuation of periodic orbits /." free to MU campus, to others for purchase, 1999. http://wwwlib.umi.com/cr/mo/fullcit?p9953845.

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2

Litsgård, Malte. "The Orbit Method and Geometric Quantisation." Thesis, Uppsala universitet, Analys och sannolikhetsteori, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-351508.

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3

Stevens, Robert E. "Design of optimal cyclers using solar sails." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02Dec%5FStevens.pdf.

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Thesis (Aeronautical and Astronautical Engineer)--Naval Postgraduate School, December 2002.<br>Thesis advisor(s): I. Michael Ross, Dennis Byrnes. Includes bibliographical references (p. 119-120). Also available online.

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4

Koblick, Darin C. "Parallel high-precision orbit propagation using the modified Picard-Chebyshev method." California State University, Long Beach, 2013.

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5

Elvidge, Michael Edward Carleton University Dissertation Engineering Mechanical and Aerospace. "A stochastic method for calculating spacecraft vulnerability to low earth orbit debris." Ottawa, 1994.

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6

Hart, Andrew Markland Stanley. "Application of the homotopy continuation method to low-eccentricity preliminary orbit determination." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/42500.

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7

Sheng, Liu Dong. "A New Method for Refinning Orbit of CPS Satellite Using Phase Measurement." International Foundation for Telemetering, 1990. http://hdl.handle.net/10150/613778.

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International Telemetering Conference Proceedings / October 29-November 02, 1990 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>This paper developed a new method of refinning GPS satellite orbit using phase measurement without knowing the GPS codes. Because this approach have no connection with any particular physical model, avoiding introducing any dynamic error, this method make it possible to get high precision GPS satellite orbit. A simulation computation has been conducted and gave an encouraging result.

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8

Scott, Karen Patricia 1964. "Radiometric calibration of on-orbit satellite sensors using an improved cross-calibration method." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/282831.

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As the field of remote sensing continues to grow with the launches of many new and complex satellite sensors in the next year, the ability to provide absolute calibration of these sensors becomes paramount for the many environmental studies proposed. In particular, temporal studies that monitor global changes in atmospheric constituents, ocean and terrestrial temperatures, and vegetation require that changes in the sensor itself, over the period of the study, be understood so that the data may be corrected. Numerous studies have established that satellite sensors change in orbit with respect t

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9

Van, Beusekom Craig Joseph. "A new guidance method for a DeltaV and re-entry constrained orbit transfer problem." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/46571.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2005.<br>Includes bibliographical references (p. 153-154).<br>This thesis proposes a spacecraft guidance system designed for a unique class of orbit transfer problems. It considers a vehicle that undertakes a maneuver with the objective of precisely flying through a point in space at a particular time. The spacecraft must automatically determine a transfer orbit that will take it from a circular, low-earth parking orbit to a velocity-unconstrained rendezvous with a Keplerian trajectory. A constraint ex

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10

Bengtsson, Bernander Karl. "A Method for Detecting Resident Space Objects and Orbit Determination Based on Star Trackers and Image Analysis." Thesis, Uppsala universitet, Avdelningen för visuell information och interaktion, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-236873.

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Satellites commonly use onboard digital cameras, called star trackers. A star tracker determines the satellite's attitude, i.e. its orientation in space, by comparing star positions with databases of star patterns. In this thesis, I investigate the possibility of extending the functionality of star trackers to also detect the presence of resident space objects (RSO) orbiting the earth. RSO consist of both active satellites and orbital debris, such as inactive satellites, spent rocket stages and particles of different sizes. I implement and compare nine detection algorithms based on image analy

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11

Korogodski, Leonid I. "Representation of quantum algebras arising from non-compact quantum groups : quantum orbit method and super-tensor products." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/39076.

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12

Dallow, Andrew Thomas. "Investigating the Enigmatic Orbit of the Suspected 2.5 MJ Planet in the Nu Octantis Binary System." Thesis, University of Canterbury. Physics and Astronomy, 2012. http://hdl.handle.net/10092/10364.

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ν Octantis is a spectroscopic binary with a semi-major axis and period of 2.55 AU and 2.9 years, respectively. Ramm et al. (2009) discovered a 52 ms^(-1) radial-velocity (RV) perturbation with a period of 417 days in this system. All evidence, both photometric and spectroscopic, suggests the perturbation is the result of a 2.5 MJ planet orbiting the primary star. However, when assuming a “normal” prograde coplanar orbit, celestial mechanics predicts this orbit is unstable, contradicting the observed stability. Simulations by Eberle and Cuntz (2010) showed a retrograde orbit for the planet to

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13

Campos, Tiago de. "Spin-orbit coupling effects and g-factors in zinc-blende InSb and wurtzite InAs nanowires using realistic multiband k · p method." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-30012018-163011/.

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Spin-dependent phenomena in semiconductor nanowires have recently gained a lot of attention, in special because these nanostructures can be a viable setup to study exotic states of matter like the Majorana fermions. One of the key ingredients to accommodate the Majorana zero modes is the spin-orbit coupling in the nanowires, which has been usually treated with two-band Hamiltonians. The spin-orbit coupling in semiconductors arise from two distinct sources being the bulk inversion asymmetry, when the unit cell does not present inversion symmetry, e.g. when the crystal unit cell is composed by t

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14

Zhou, Ying Fu. "A Study For Orbit Representation And Simplified Orbit Determination Methods." Queensland University of Technology, 2003. http://eprints.qut.edu.au/15895/.

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This research effort is concerned with the methods of simplified orbit determination and orbit representation and their applications for Low Earth Orbit (LEO) satellite missions, particularly addressing the operational needs of the FedSat mission. FedSat is the first Australian-built satellite in over thirty years. The microsatellite is approximately 50cm cubed with a mass of 58 kg. The satellite was successfully placed into a low-earth near-polar orbit at an altitude of 780km by the Japanese National Space Development Agency (NASDA) H-IIA launch vehicle on 14, December 2002. Since then, it h

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15

Taylor, Andrew D. "A meteor orbit radar." Thesis, University of Canterbury. Physics, 1991. http://hdl.handle.net/10092/8111.

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A Meteor Orbit Radar, AMOR, has been built near Christchurch, New Zealand. It uses a narrow beam pulsed radar to detect meteors down to a + 12.5 radio-meteor magnitude limit. AMOR measures the relative timelags between the onset of meteor echoes at each of three spaced receiver stations to calculate the meteoroid velocity with an accuracy of ±2.5 km.s-¹ . A 'Luggable' MAC AT is used to run the radar, identify meteor echoes and record raw observation records. A total of 1.3 X 10⁵ meteor velocities have been determined using the new timelag method. For 1.6 X 10⁴ of these observations velocity m

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16

Sohier, Henri. "Modélisation, analyse et optimisation d’un largage de fusée spatiale depuis un porteur de type avion." Thesis, Toulouse, ISAE, 2014. http://www.theses.fr/2014ESAE0044/document.

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Un système de lancement aéroporté est constitué d'un porteur de type avion larguant un lanceur à une certaine altitude. De tels systèmes sont l'objet d'un intérêt croissant, notamment pour la mise à poste de petits satellites. Les travaux présentés dans cette thèse s'intègrent dans le programme Perseus du CNES qui a déjà donné lieu à la construction d'un modèle réduit appelé EOLE. Il s'agit d'étudier la phase de largage, particulièrement sensible.Les contraintes de similitude pouvant permettre l'étude du largage taille réelle avec EOLE sont d'abord identifiées. Les possibilités d'extrapolation

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17

Forward, Michael. "The complex Lorenz equations and orbit following methods." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47438.

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18

Griffith, Daniel Todd. "New methods for estimation, modeling and validation of dynamical systems using automatic differentiation." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1408.

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The main objective of this work is to demonstrate some new computational methods for estimation, optimization and modeling of dynamical systems that use automatic differentiation. Particular focus will be upon dynamical systems arising in Aerospace Engineering. Automatic differentiation is a recursive computational algorithm, which enables computation of analytically rigorous partial derivatives of any user-specified function. All associated computations occur, in the background without user intervention, as the name implies. The computational methods of this dissertation are enabled by a new

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19

Farhat, Ayman. "Calculs théoriques avec le couplage spin orbitales pour les molécules diatomiques YS, YN, ZrS, et ZrN." Thesis, Lyon 1, 2012. http://www.theses.fr/2012LYO10078/document.

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Cette thèse est consacrée à l'étude ab initio des structures électroniques des molécules diatomiques polaires YN, YS, ZrN, et ZrS. Cette étude est motivé par le manque d’informations dans la littérature sur la structure électronique de ces molécules, alors qu’elles ont clairement été identifiées dans le spectre de certaines étoiles. Des calculs théoriques sont ainsi nécessaire puisqu’ils peuvent fournir d'importantes informations quant aux propriétés des états électroniques fondamentaux et excités qui ne sont pas accessibles expérimentalement. Dans ce travail les calculs ab initio ont été effe

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20

García, Taberner Laura. "Proximity maneuvering of libration point orbit formations using adapted finite element methods." Doctoral thesis, Universitat Politècnica de Catalunya, 2010. http://hdl.handle.net/10803/78047.

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This doctoral dissertation is structured in four chapters as follows. The first chapter contains a summary of formation flying projects that have been taken into consideration since few years ago. We specially focus on the missions that have been planned to be located in a libration point regime. For completeness, this chapter also contains a general state of the art about the main reconfiguration techniques for satellite formations. The main new contributions of the thesis are contained in chapters 2, 3 and 4. Chapter 2 introduces the general methodology that will be considered in all the

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21

Chung, Lauren Rose. "Orbit determination methods for deep space drag-free controlled laser interferometry missions." College Park, Md.: University of Maryland, 2006. http://hdl.handle.net/1903/3572.

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Thesis (M.S.) -- University of Maryland, College Park, 2006.<br>Thesis research directed by: Dept. of Aerospace Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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22

Mohan, Swati. "Reconfiguration methods for on-orbit servicing, assembly, and operations with application to space telescopes." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/39706.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2007.<br>Includes bibliographical references (p. 115-118).<br>Reconfiguration is an important characteristic in furthering on-orbit servicing, assembly, and operations. Previous work has focused on large assemblers manipulating small payloads, where the dynamics of the assembler is not significantly changed. This work seeks to identify the impact of reconfiguration on maneuver performance. Reconfiguration is considered in two categories: implementation and application. Implementation of reconfiguration

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23

Crofts, Jonathan J. "Efficient method for detection of periodic orbits in chaotic maps and flows." Thesis, University of Leicester, 2007. http://hdl.handle.net/2381/30535.

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An algorithm for detecting unstable periodic orbits in chaotic systems [Phys. Rev. E, 60 (1999), pp. 6172-6175] which combines the set of stabilising transformations proposed by Schmelcher and Diakonos [Phys. Rev. Lett., 78 (1997), pp. 4733-4736] with a modified semi-implicit Euler iterative scheme and seeding with periodic orbits of neighbouring periods, has been shown to be highly efficient when applied to low-dimensional system. The difficulty in applying the algorithm to higher dimensional systems is mainly due to the fact that the number of stabilising transformations grows extremely fast

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24

Angstmann, Christopher N. Physics Faculty of Science UNSW. "Deterministic and associated stochastic methods for dynamical systems." Publisher:University of New South Wales. Physics, 2009. http://handle.unsw.edu.au/1959.4/44401.

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An introduction to periodic orbit techniques for deterministic dynamical systems is presented. The Farey map is considered as examples of intermittency in one-dimensional maps. The effect of intermittency on the Markov partition is considered. The Gauss map is shown to be related to the farey map by a simple transformation of trajectories. A method of calculating periodic orbits in the thermostated Lorentz gas is derived. This method relies on minimising the action from the Hamiltonian description of the Lorentz gas, as well as the construction of a generating partition of the phase space. Th

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25

Li, Yanlin. "A STUDY ON METEOR ECHOES USING THE ARECIBO AND JICAMARCA HIGH POWER LARGE APERTURE RADARS." Miami University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=miami1547218801600341.

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26

Miller, Grant Robert MacKinnon. "In the shadows of giants : a tomographic method for analysing the orbits of transiting exoplanets." Thesis, University of St Andrews, 2013. http://hdl.handle.net/10023/3735.

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The radial velocity anomaly which affects spectroscopic observations of stars undergoing transit by a companion body is known as the Rossiter-McLaughlin effect. This effect can be used to measure the obliquities of the orbits of transiting planets. In this thesis I present a tomographic method for analysing the effect, which manifests itself in stellar spectral line-profiles. I implement this method on seven systems known to host transiting planets, and some systems with early-type host stars, for which the transit events have not yet been shown to be the result of planetary companions. Despit

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27

Alinder, Simon. "Space Situational Awareness with the Swedish Allsky Meteor Network." Thesis, Uppsala universitet, Observationell astrofysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-390397.

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This thesis investigates the use of the Swedish Allsky Meteor Network (SAMN) for observing, identifying, and determining the orbits of satellites. The overall goal of this project is to determine the feasibility of using such a network for Space Situational Awareness (SSA) purposes, which requires identification and monitoring of objects in orbit. This thesis is a collaboration with the Swedish Defense Research Agency (FOI) to support their efforts in SSA. Within the frame of this project, the author developed software that can take data of observations of an object collected from the all-sky

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28

Robertson, Erika Marie. "Experimental methods to examine the role of vibrational excitation in the singlet-triplet spin-orbit coupling in acetylene." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/57774.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2010.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 46-49).<br>Despite being a seemingly simple molecule, acetylene has a complicated electronic structure that has been studied extensively both experimentally and theoretically. Acetylene has been observed to have a complex spin-orbit coupling mechanism where the first excited singlet state S couples to the triplet state T3 which is then coupled to the dense manifold of vibrational states in the T, 2 electronic states. A description o

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29

Soja, Rachel Halina. "Dynamics of the Solar System Meteoroid Population." Thesis, University of Canterbury. Department of Physics and Astronomy, 2010. http://hdl.handle.net/10092/4305.

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The purpose of this study is to develop an understanding of the observability of small-scale dynamical Solar System features in meteor orbit radar data, particularly with reference to mean motion resonance effects. Particular focus is placed on the presence of `resonant swarms' in meteoroid streams: the resonant swarm at the 7:2 Jovian mean-motion resonance is used as an example, as it best satisfies radar observability criterion. Furthermore, evidence for this structure exists in visual meteor data. The radar dataset used for this study is that of the Canadian Meteor Orbit Radar (CMOR) as thi

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30

Heinze, Martin. "Spectrum and quantum symmetries of the AdS5 × S5 superstring." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2015. http://dx.doi.org/10.18452/17257.

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Die AdS/CFT-Dualität zwischen N=4 SYM und dem AdS_5 × S^5 Superstring zeigt Quanten-Integrabilität im planaren Limes und erlaubte die Konstruktion mächtiger Methoden, welche das Spektrale Problem zu lösen scheinen. Unser Verständnis der direkten Quantisierung des AdS_5 × S^5 Superstrings ist jedoch weiterhin unbefriedigend und besonders das Spektrum kurzer Stringzustände war bisher nur in führender Ordnung in starker ''t Hooft-Kopplung bekannt. In dieser Arbeit untersuchen wir verschiedene Methoden der perturbativen Quantisierung kurzer Strings über die führende Ordnung hinaus, wodurch wir

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31

Dias, Mariama Rebello de Sousa. "Transport phenomena in quasi-one-dimensional heterostructures." Universidade Federal de São Carlos, 2014. https://repositorio.ufscar.br/handle/ufscar/4973.

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Made available in DSpace on 2016-06-02T20:15:31Z (GMT). No. of bitstreams: 1 5844.pdf: 11430873 bytes, checksum: b80a5790a9ebf6ae63ff48e52968ae60 (MD5) Previous issue date: 2014-02-21<br>Universidade Federal de Sao Carlos<br>O crescimento e caracterização de sistemas de heteroestruturas semicondutoras quasi-unidimensionais têm atraído grande interesse devido à sua potencial de aplicação tecnológica, como foto-detectores, dispositivos opto-eletrônicos assim como seu para o processamento de informação quântica e aplicações em fotônica. O objetivo desta tese é o estudo das propriedades de trans

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32

Rebaza-Vasquez, Jorge. "Computation and continuation of equilibrium-to-periodic and periodic-to-periodic connections." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/28991.

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33

Mück, Leonie Anna [Verfasser]. "Highly accurate quantum chemistry : spin-orbit splittings via multireference coupled-cluster methods and applications in heavy-atom main-group chemistry / Leonie Anna Mück." Mainz : Universitätsbibliothek Mainz, 2013. http://d-nb.info/1033731374/34.

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34

McBeth, Rafe A. "Active Radiation Detectors for Use in Space Beyond Low Earth Orbit| Spatial and Energy Resolution Requirements and Methods for Heavy Ion Charge Classification." Thesis, Colorado State University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10604769.

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<p> Space radiation exposure to astronauts will need to be carefully monitored on future missions beyond low earth orbit. NASA has proposed an updated radiation risk framework that takes into account a significant amount of radiobiological and heavy ion track structure information. These models require active radiation detection systems to measure the energy and ion charge Z. </p><p> However, current radiation detection systems cannot meet these demands. The aim of this study was to investigate several topics that will help next generation detection systems meet the NASA objectives. Specific

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35

Fleischer, Stefan [Verfasser], and Andreas [Gutachter] Knauf. "Improbability Results on Collision and Non-Collision Orbits in Multibody Systems via the Poincaré Surface Method / Stefan Fleischer ; Gutachter: Andreas Knauf." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2018. http://d-nb.info/1154308715/34.

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36

Michaud, Yonnel. "Etude phénoménologique de la réaction d'échange de charge (pi)-p -> (pi)[n à haute énergie]." Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10097.

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La presente these est consacree a l'etude de la reaction d'echange de charge pion negatif proton donne pion nul neutron. Cette reaction fait partie des processus quasi-elastiques, caracterises par de petits moments transferes, et donc non interpretables par la chromodynamique quantique. Le modele de glauber, utilise avec succes dans le cadre de la diffusion elastique, est exploite ici pour l'etude de la reaction d'echange de charge. Une interaction effective entre quarks, incluant un terme central et un terme spinorbite, est employee afin de rendre compte de l'echange du meson rho. Les resulta

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37

Szasz, Csilla. "Radio meteors above the Arctic Circle : radiants, orbits and estimated magnitudes." Doctoral thesis, Umeå universitet, Fysik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1603.

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This thesis presents results based on data collected with the 930 MHz EISCAT UHF radar system and three SKiYMet specular meteor radars. It describes in detail a method for meteoroid orbit calculation. The EISCAT UHF system comprises three identical 32 m parabolic antennae: one high-power transmitter/receiver and two remote receivers. Precise meteoroid deceleration and radar cross section are determined from 410 meteor head echoes simultaneously observed with all three receivers between 2002 and 2005, during four 24h runs at the summer/winter solstice and the vernal/autumnal equinox. The observ

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38

Pedone, M. (Matteo). "Algebraic methods for constructing blur-invariant operators and their applications." Doctoral thesis, Oulun yliopisto, 2015. http://urn.fi/urn:isbn:9789526208770.

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Abstract Image acquisition devices are always subject to physical limitations that often manifest as distortions in the appearance of the captured image. The most common types of distortions can be divided into two categories: geometric and radiometric distortions. Examples of the latter ones are: changes in brightness, contrast, or illumination, sensor noise and blur. Since image blur can have many different causes, it is usually not convenient and also computationally expensive to develop ad hoc algorithms to correct each specific type of blur. Instead, it is often possible to extract a blur

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Lippolis, Domenico. "How well can one resolve the state space of a chaotic map?" Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/33841.

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All physical systems are affected by some noise that limits the resolution that can be attained in partitioning their state space. For chaotic, locally hyperbolic flows, this resolution depends on the interplay of the local stretching/contraction and the smearing due to noise. My goal is to determine the `finest attainable' partition for a given hyperbolic dynamical system and a given weak additive white noise. That is achieved by computing the local eigenfunctions of the Fokker-Planck evolution operator in linearized neighborhoods of the periodic orbits of the corresponding deterministic syst

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40

Mate, Sujay. "Développement d'un simulateur du ciel pour les instruments à grand champ de vue X-gamma en orbite terrestre basse : application à l'évaluation des performances du spectro-imageur SVOM-ECLAIRs." Thesis, Toulouse 3, 2021. http://www.theses.fr/2021TOU30031.

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Les sursauts gamma (Gamma-Ray Bursts ou GRBs) sont les explosions les plus lumineuses de l'univers. On les observe sous la forme de bouffées de rayons X/ƴ (d'une durée de quelques millisecondes à quelques dizaines de secondes) suivies d'une émission rémanente (généralement à de plus grandes longueurs d'onde). Ils résultent soit de la fusion de deux objets compacts (une paire d'étoiles à neutrons ou une étoile à neutrons et un trou noir), soit de l'effondrement du noyau d'une étoile massive (>15 masse solaire). Les GRBs sont d'excellents candidats pour étudier la physique aux énergies et den

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Prado, Mário César Monteiro do. "Demonstrações assistidas por computador para equações diferenciais ordinárias." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/55/55135/tde-03072015-104300/.

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Neste trabalho, apresentamos um método computacional rigoroso para a demonstração de existência de órbitas periódicas de alguns sistemas de equações diferenciais ordinárias com campo autônomo do tipo polinomial. Mostraremos que o problema de encontrar órbitas periódicas para esses sistemas de equações é equivalente a buscar por raízes de certas funções definidas no espaço de Banach das sequências com decaimento algébrico. O método pode ser dividido em duas etapas. Na primeira, buscamos numericamente por soluções periódicas aproximadas. Na segunda, mostraremos a existência de uma órbita periódi

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42

Moussi, El hadi. "Analyse de structures vibrantes dotées de non-linéarités localisées à jeu à l'aide des modes non-linéaires." Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4792/document.

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Le travail de cette thèse a été réalisé dans le cadre d'une collaboration entre EDF R&D et le LMA de Marseille (CNRS). Le but était de développer des outils théoriques et numériques pour le calcul de modes non-linéaires de structures industrielles possédant des non-linéarités localisées à jeu. La méthode de calcul utilisée est une combinaison de la méthode d'équilibrage harmonique (EH) et de la méthode asymptotique numérique (MAN), appelée EHMAN. Elle est réputée pour sa robustesse sur les problèmes réguliers. L'enjeu de ce travail de thèse est de l'appliquer sur des problèmes non-régulier

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Antunes, Rodrigo Badotti. "Avaliação do volume orbitário nos avanços frontofaciais." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/5/5132/tde-27022015-095543/.

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Craniofaciossinostose sindrômica (CS) é uma desordem congênita associada às mutações dos genes FGFR1, FGFR2 e FGFR3. Ocasiona uma fusão prematura das suturas craniofaciais, levando à deficiência no crescimento do crânio e terço médio da face. A severidade dos sintomas relacionados à hipertensão intracraniana, aparelho respiratório (síndrome da hipopneia-apneia do sono) e ocular (órbitas rasas, proptose ocular, exorbitismo e falta de proteção do globo ocular), são parâmetros para indicar o procedimento cirúrgico. A tomografia-3D é uma opção atual e pouco utilizada para avaliar os volumes orbita

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Castro, Gian Machado de. "Soluções exatas de equações de Einstein para buracos negros e anéis de matéria." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278547.

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Orientadores: Patricio A. Letelier Sotomayor e Marcelo Moraes Guzzo<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-08-13T19:55:09Z (GMT). No. of bitstreams: 1 Castro_GianMachadode_D.pdf: 3217878 bytes, checksum: 48c026fc06d4c9e5db03014506ffc609 (MD5) Previous issue date: 2009<br>Resumo: Nesta tese, estudamos o problema de um anel delgado de matéria de densidade constante com um buraco negro de Kerr em seu centro. Nosso objetivo foi resolver as equações de Einstein no vácuo com simetria axial para esse sistema gr

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Stellin, Filippo. "Anderson localization in interacting quantum systems." Thesis, Université de Paris (2019-....), 2020. http://www.theses.fr/2020UNIP7004.

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Dans cette thèse nous étudions au niveau théorique le comportement des particules quantiques (électrons, atomes, photons, etc.) se mouvant dans un milieu désordonné et sujets à la localisation d’Anderson. Pour des particules non interagissantes, le spectre de l’énergie peut posséder un ou plus points critiques, où les fonctions d’onde étendues deviennent localisées, en donnant lieu à une transition de phase métal-isolant connue comme Transition d’Anderson.Une question fondamentale est si et comment les transitions d’Anderson survivent dans des systèmesquantiques interagissants. Dans cet ouvrag

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Sendrowski, Janek. "Feigenbaum Scaling." Thesis, Linnéuniversitetet, Institutionen för matematik (MA), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-96635.

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In this thesis I hope to provide a clear and concise introduction to Feigenbaum scaling accessible to undergraduate students. This is accompanied by a description of how to obtain numerical results by various means. A more intricate approach drawing from renormalization theory as well as a short consideration of some of the topological properties will also be presented. I was furthermore trying to put great emphasis on diagrams throughout the text to make the contents more comprehensible and intuitive.

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Cardoso, dos Santos Josué. "Study of the dynamics around celestial bodies using analytical and semi-analytical techniques." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/155950.

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Submitted by Josué Cardoso dos Santos (josuesantosunesp@gmail.com) on 2018-09-10T18:36:37Z No. of bitstreams: 1 Tese_Final_Josue_Cardoso_Santos.pdf: 78449557 bytes, checksum: 4515b9cb7cc346753f7e9682b8e037de (MD5)<br>Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2018-09-10T18:47:05Z (GMT) No. of bitstreams: 1 santos_jc_dr_guara.pdf: 78449557 bytes, checksum: 4515b9cb7cc346753f7e9682b8e037de (MD5)<br>Made available in DSpace on 2018-09-10T18:47:05Z (GMT). No. of bitstreams: 1 santos_jc_dr_guara.pdf: 78449557 bytes, checksum: 4515b9cb7cc346753f7e96

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Neubeck, Wolfgang. "Etude des propriétés magnétiques et électroniques des oxydes de métaux de transition MnO, CoO, NiO et CuO par diffraction magnétique de rayons X." Université Joseph Fourier (Grenoble), 2000. http://www.theses.fr/2000GRE10216.

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Ce travail de these presente les resultats d'experiences de diffraction magnetique obtenus sur des oxydes de metaux de transition : mno, coo, nio et cuo. La diffraction magnetique de rayons x non-resonante est une sonde experimentale unique, qui permet la separation des contributions du spin et du moment orbital a la densite totale d'aimantation. Nos resultats experimentaux montrent des moments orbitaux non-nuls dans coo (l/s=0. 95), nio (l/s=0. 34) et cuo (l/s=0. 18). Uniquement dans le cas de mno le moment orbital est nul. En fait, les interactions spin-orbite peuvent retablir partiellement

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Hsu, Ting-Wei, and 許庭瑋. "GLONASS Orbit Determination and Positioning Method." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/32189896705589068627.

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碩士<br>國立臺灣大學<br>電機工程學研究所<br>101<br>In general, GNSS (Global Navigation Satellites System) is described as the satellites-based navigation system. Presently, the available systems include GPS (Global Positioning system) of United States and GLONASS (Global Navigation Satellites System) of Russia. With more available satellites, the accuracy of positioning could become more precise, and the combination of GPS and GLONASS could easily reach it. Although GPS and GLONASS are similar to each other, the both systems are not entirely compatible. Before combining these two systems, it is important

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Ho, Ka-Fai, and 何家輝. "CHAMP Satellite Short-arc Orbit Determination using Kinematic Method." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/25218458994323990843.

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碩士<br>國立成功大學<br>測量工程學系碩博士班<br>91<br>In recently years, there is a tendency to develop low-earth orbit（LEO）satellites, as the CAHMP lunched at 2000 and ROCSAT-3 will lunch at 2005, to process many earth sciences researches. The science projects of the LEO include earth gravity recovery, earth atmosphere temperature and pressure retrieval, weather prediction and space/time variability of the magnetic field of the earth. Determine the LEO position is one of the important and necessary task in order to carry out those researches above. This research process the ionosphere-free triple-differenced

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