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Dissertations / Theses on the topic 'Singularity'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Ito, Yukari, and Osamu Iyama. "Singularity Seminar 2008." 名古屋大学多元数理科学研究科, 2009. http://hdl.handle.net/2237/12246.

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2

Bramberger, Sebastian. "Cosmological Singularity Resolution." Doctoral thesis, Humboldt-Universität zu Berlin, 2020. http://dx.doi.org/10.18452/21024.

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Das Standardmodell der Kosmologie stellte sich in den letzten Jahrzehnten, trotz immer genauerer experimenteller Tests, als sehr robust heraus. Darüber hinaus schaffen ekpyrotische und inﬂationäre Theorien eine Grundlage um viele konzeptuelle Probleme des frühen Universums zu lösen. Dennoch bleiben viele Fragen unbeantwortet. So ist es in inflationären Theorien schwierig präzise Vorhersagen zu treffen so lange die ewige Inﬂation nicht besser verstanden wird. Auf der anderen Seite haben ekpyrotische Theorien Schwierigkeiten den Übergang zwischen kontrahierenden und expandierenden Phasen - den s

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3

Ling, Eric. "The Big Bang Singularity." Thesis, University of California, Santa Barbara, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1600215.

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<p> The big bang theory is a model of the universe which makes the striking prediction that the universe began a finite amount of time in the past at the so called "Big Bang singularity." We explore the physical and mathematical justification of this surprising result. After laying down the framework of the universe as a spacetime manifold, we combine physical observations with global symmetrical assumptions to deduce the FRW cosmological models which predict a big bang singularity. Next we prove a couple theorems due to Stephen Hawking which show that the big bang singularity exists even if o

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4

Pomponio, Alessio. "Singularity perturbed elliptic problems." Doctoral thesis, SISSA, 2004. http://hdl.handle.net/20.500.11767/4172.

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5

Areskog, Oskar. "Mapping the Singularity : A Diagrammatic Analysis of Kurzweil’s Singularity Argument and Some Objections." Thesis, Uppsala universitet, Filosofiska institutionen, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-446660.

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Constructing and understanding arguments is often difficult but key to both philosophyand other parts of the everyday life. Some methods to ease this task has been developed.One of the methods developed within informal reasoning is argument diagramming, amethod to structure and visualize arguments. This essay takes a complicated argumentabout the fate of the universe, put forward by futurist Ray Kurzweil in his book TheSingularity is Near, as well as some critique published against said argument, as a casestudy for the application of argument diagramming on unstructured arguments fromoutside t

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6

Morsink, Sharon Marijke. "The generic black hole singularity." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq21606.pdf.

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7

Zlatanov, Dimiter Stefanov. "Generalized singularity analysis of mechanisms." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0008/NQ35387.pdf.

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8

Kirk, Neil Patrick. "Computational aspects of singularity theory." Thesis, University of Liverpool, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359187.

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In this thesis we develop computational methods suitable for performing the symbolic calculations common to local singularity theory. For classification theory we employ the unipotent determinacy techniques of Bruce, du Plessis, Wall and complete transversal theorems of Bruce, du Plessis. The latter results are, as yet, unpublished and we spend some time reviewing these results, extending them to filtrations of the module m,,,.E (n, p) other than the standard filtration by degree. Weighted filtrations and filtrations induced by the action of a nilpotent Lie algebra are considered. A computer p

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9

Kalck, Martin [Verfasser]. "Relative singularity categories / Martin Kalck." Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://d-nb.info/1045276723/34.

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10

Salarinoghabi, Mostafa. "Flat and Round Singularity theory." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/55/55135/tde-09122016-101116/.

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We propose in this thesis a way to study deformations of plane curves that take into consideration the geometry of the curves as well as their singularities. We deal in details with local phenomena that occur generically in two-parameter families of curves. We obtain information on the inflections and vertices appearing on the deformed curves. We also obtain the configurations of the evolutes of the curves and of their deformations, and apply our results to orthogonal projections of space curves. Finally, we consider the profile (outline, apparent contour) of a smooth surface in the Euclidian

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11

Lladser, Manuel Eugenio. "Asymptotic enumeration via singularity analysis." Connect to this title online, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1060976912.

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Thesis (Ph. D.)--Ohio State University, 2003.<br>Title from first page of PDF file. Document formatted into pages; contains x, 227 p.; also includes graphics Includes bibliographical references (p. 224-227). Available online via OhioLINK's ETD Center

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12

Muffett, M. A. "Two topics in invariant singularity theory." Thesis, University of Liverpool, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370862.

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13

Davis, Declan Denis Daniel. "Affine differential geometry and singularity theory." Thesis, University of Liverpool, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.479061.

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14

Bottman, Nathaniel Sandsmark. "Pseudoholomorphic quilts with figure eight singularity." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/101823.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mathematics, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 107-109).<br>In this thesis, I prove several results toward constructing a machine that turns Lagrangian correspondences into A[infinity],-functors between Fukaya categories. The core of this construction is pseudoholomorphic quilts with figure eight singularity. In the first part, I propose a blueprint for constructing an algebraic object that binds together the Fukaya categories of many different symplectic manifolds. I

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15

Khan, Md Abdul Hakim. "Singularity analysis by summing power series." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368391.

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16

Iguchi, Hideo. "Gravitational Radiation from a Naked Singularity." 京都大学 (Kyoto University), 2000. http://hdl.handle.net/2433/86382.

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17

Edmonds, Bartlett Douglas Jr. "Approaching the Singularity in Gowdy Universes." VCU Scholars Compass, 2006. http://scholarscompass.vcu.edu/etd/1083.

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It has been shown that the cosmic censorship conjecture holds for polarized Gowdy spacetimes. In the more general, unpolarized case, however, the question remains open. It is known that cylindrically symmetric dust can collapse to form a naked singularity. Since Gowdy universes comprise gravitational waves that are locally cylindrically symmetric, perhaps these waves can collapse onto a symmetry axis and create a naked singularity. It is known that in the case of cylindrical symmetry, event horizons will not form under gravitational collapse, so the formation of a singularity on the symmetry a

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18

Yan, Duokui. "Four-body Problem with Collision Singularity." Diss., CLICK HERE for online access, 2009. http://contentdm.lib.byu.edu/ETD/image/etd3111.pdf.

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19

Wei, Chengeng. "Cusp singularity in nonlinear dynamical systems /." Philadelphia, Pa. : Drexel University, 2004. http://dspace.library.drexel.edu/handle/1860/287.

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20

Foster, Scott. "Singularity structure of scalar field cosmologies /." Title page, contents and abstract only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phf757.pdf.

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21

Bigonnet, Bruno. "Holonomie et graphe de certains feuilletages avec singularites." Toulouse 3, 1986. http://www.theses.fr/1986TOU30165.

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On considere des feuilletages avec singularites au sens de sussmann et stefan, tels qu'ils s'introduisent en theorie du controle et en geometrie symplectique: la dimension des feuilles croit au voisinage des feuilles singulieres. On sait que, dans le cas regulier, les graphes des relations d'equivalence regulieres locales definies par les plaques se recollent en un groupoide differentiable, qui est le groupoide d'holonomie d'ehresmann, ou le "graphe" de winkelnkemper-connes, et qui determine le revetement d'holonomie de chaque feuille. On etend ici cette notion a certains feuilletages singulie

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22

Ashley, Michael John Siew Leung, and ashley@gravity psu edu. "Singularity theorems and the abstract boundary construction." The Australian National University. Faculty of Science, 2002. http://thesis.anu.edu.au./public/adt-ANU20050209.165310.

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The abstract boundary construction of Scott and Szekeres has proven a practical classification scheme for boundary points of pseudo-Riemannian manifolds. It has also proved its utility in problems associated with the re-embedding of exact solutions containing directional singularities in space-time. Moreover it provides a model for singularities in space-time - essential singularities. However the literature has been devoid of abstract boundary results which have results of direct physical applicability.¶ This thesis presents several theorems on the existence of essential singularities in spa

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23

Astefanesei, Dumitru. "Singularity resolution and holography in string theory." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85119.

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String theory is to date the best candidate for the "theory of everything" which would describe all four fundamental interactions, including gravity, on the same footing. The general description of black holes and other spacetimes with horizons remains a key aspect of quantum gravity that must be addressed by a consistent theory, such as string theory. Also, the resolution of singularities is a fundamental problem in a quantum theory of gravity. At the same time, the recent revolution in observational cosmology creates a pressing need to accommodate fundamental issues such as cosmic acc

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24

Pace, Reuben. "Singularity through plurality : a portfolio of compositions." Thesis, Bangor University, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.556081.

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This portfolio of compositions which consists of six acoustic works for different ensembles I has the following research question as it's primary target: 'How do 1 integrate the influences and techniques from different styles and idioms 1 have worked in into one seamless mechanism which creates a singular, individual, personal musical identity without this identity taking the form of a random montage? ' This target is achieved through the employment of different compositional techniques. Some of these techniques, such as the numeric serial processes explained in detail in the foreward to the p

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25

Cottrell-Boyce, Aidan. "Judaizing and singularity in England, 1618-1667." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/287471.

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In the seventeenth century, in England, a remarkable number of small, religious movements began adopting demonstratively Jewish ritual practices. They were labelled by their contemporaries as Judaizers. Typically, this phenomenon has been explained with reference to other tropes of Puritan practical divinity. It has been claimed that Judaizing was a form of Biblicism or a form of millenarianism. In this thesis, I contend that Judaizing was an expression of another aspect of the Puritan experience: the need to be recognized as a 'singular,' positively-distinctive, separated minority.

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26

Hou, Zuoliang 1977. "Local complex singularity exponents for isolated singularities." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/28312.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 2004.<br>Includes bibliographical references (p. 59-61).<br>In this thesis, I studied the stability of local complex'singularity exponents (lcse) for holomorphic functions whose zero sets have only isolated singularities. For a given holomorphic function f defined on a neighborhood of the origin in C[to the power of]n, the lcse c[sub]0(f) is defined as the supremum of all positive real number [lambda] for which 1/[magnitude of]f[to the power of][2 lambda] is integrable on some neighborhood of the origin. It has been

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27

Katsuragi, Camille. "Condition of Singularity Viewer, Temporality and Otherness." Thesis, University of the Arts London, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.650321.

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28

Lari-Lavassani, Ali. "Multiparameter bifurcation with symmetry via singularity theory /." The Ohio State University, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487683049377079.

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29

Yang, Yawei. "Kinematics, singularity and design of parallel robots." Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1597619111&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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30

Ngampungpis, Kittikorn. "Stress Singularity near Interface Edge under Creep." 京都大学 (Kyoto University), 2009. http://hdl.handle.net/2433/124514.

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31

Matsumoto, Takeshi. "Coherent structures, multifractality and singularity in turbulence." 京都大学 (Kyoto University), 2003. http://hdl.handle.net/2433/149048.

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32

Carricato, Marco <1973&gt. "Singularity-Free Fully-Isotropic Translational Parallel Manipulators." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2002. http://amsdottorato.unibo.it/4017/1/Carricato_Marco_tesi.pdf.

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Parallel mechanisms show desirable characteristics such as a large payload to robot weight ratio, considerable stiffness, low inertia and high dynamic performances. In particular, parallel manipulators with fewer than six degrees of freedom have recently attracted researchers’ attention, as their employ may prove valuable in those applications in which a higher mobility is uncalled-for. The attention of this dissertation is focused on translational parallel manipulators (TPMs), that is on parallel manipulators whose output link (platform) is provided with a pure translational motion with res

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33

Carricato, Marco <1973&gt. "Singularity-Free Fully-Isotropic Translational Parallel Manipulators." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2002. http://amsdottorato.unibo.it/4017/.

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Parallel mechanisms show desirable characteristics such as a large payload to robot weight ratio, considerable stiffness, low inertia and high dynamic performances. In particular, parallel manipulators with fewer than six degrees of freedom have recently attracted researchers’ attention, as their employ may prove valuable in those applications in which a higher mobility is uncalled-for. The attention of this dissertation is focused on translational parallel manipulators (TPMs), that is on parallel manipulators whose output link (platform) is provided with a pure translational motion with res

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34

Costa, Guillaume. "Intermittency, Singularity & Reversibility on Log-lattices." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP040.

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En 2019, Campolina & Mailybaev ont développé un nouveau cadre, les grilles logarithmiques permettant de réaliser des simulations à haute résolution grâce à l'utilisation de modes exponentiellement espacés dans l'espace de Fourier. Une telle construction rappelle les shellmodels bien connus. En utilisant ce nouveau cadre, cette thèse aborde le sujet de l'intermittence, des singularités et de la réversibilité dans les écoulements turbulents. Nous nous intéressons tout d'abord à la capacité du système à reproduire des caractéristiques intermittentes, telles que des bursts de dissipation d'éne

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35

Chan, Vincent K. "Singularity analysis and redundant actuation of parallel manipulators." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/17766.

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36

Manoel, Miriam Garcia. "Hidden symmetries in bifurcation problems : the singularity theory." Thesis, University of Warwick, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327556.

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37

Perochena, González Paola, Gisela Matilde Coria, and Hernández José Fernando Calderero. "Singularity According to Personalized Education in Digital Era." Pontificia Universidad Católica del Perú, 2017. http://repositorio.pucp.edu.pe/index/handle/123456789/117823.

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Singularity, opening and autonomy are essential elements considered fundamental in «Personalized Education». The article delves into the consequences of the singularity of every day practice of teaching and learning in the current context characterized, among other features, by increasing digitization. In the light of the outcome, it follows that the unique and unreapetable being of the person must be considered in relation to the teaching and educational reality from planning, execution and assessment.Every training process has to adapt to each specific situation and the features andinterests

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38

Joshi, Gaurav Gaurang. "Ultra-Wideband Channel Modeling using Singularity Expansion Method." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/27210.

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Ultra-wideband (UWB) communications is expected to revolutionize high data-rate, short-distance wireless communications, providing data-rates in excess of 100 Mbps. However, the wireless channel distorts the transmitted signal by dispersing the signal energy over time. This degrades the output signal-to-noise ratio (SNR) of a correlation based matched-filter receiver, limiting the achievable data-rate and user capacity. Most wideband channel models do not account for all the identified dispersion mechanisms namely the frequency dispersion, the resonant dispersion and the multipath dispersion.

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39

Blischak, Andrew Travis. "Analysis of an Embedded Singularity Chipless RFID Tag." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/43715.

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The objective of this research is to explore the feasibility of a chipless RFID tag that stores a data signature in the form of complex frequency plane singularities. To this end an existing chipless RFID tag, the notched elliptical dipole tag, was analyzed first with simulations and then measurements. A pole signature was extracted from simulations, and individual poles were determined via experimentation to be attributable to specific controllable features of the tag. The poles were shown to be independent of both excitation and observation. A prototype tag was measured, and the pole signatu

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40

Wang, Xiaohui. "Singularity Theory of Strategy Functions Under Dimorphism Equivalence." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1426460461.

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41

Sun, Lu. "Geometric transformation and image singularity with wavelet analysis." HKBU Institutional Repository, 2006. http://repository.hkbu.edu.hk/etd_ra/656.

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42

García, Fontán Jorge. "Singularity and Stability Analysis of vision-based controllers." Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS015.

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L’objectif de cette thèse doctoral est d’explorer les cas d’échec de l’asservissement visuel, d’un point de vue mathématique rigoureux et à l’aide d’outils de calcul exact issus de la géométrie algébrique et du calcul formel. Les cas d’échec possibles proviennent de deux sources : les singularités des équations cinématiques, et l’existence de multiples points d’équilibre, ce qui affecte la stabilité asymptotique globale des lois de contrôle. Dans cette thèse, nous avons atteint deux objectifs principaux. Le premier est de calculer les conditions de singularité pour le modèle d’interaction lié

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43

Gomez-Breysse, Marie. "L'entrepreneur lifestyle : un processus entrepreneurial hypermoderne et singulier." Thesis, Montpellier 1, 2010. http://www.theses.fr/2010MON10009/document.

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La notion "lifestyle" représente un nouveau stade de l'évolution de l'entrepreneur. Cette approche a été mise en évidence par des travaux anglophones et plus particulièrement présentée par Johannisson (2004) sans être jusqu'à ce jour étudiée. C'est pourquoi par ce travail de thèse nous avons tenté de comprendre le processus entrepreneurial de l'entrepreneur "lifestyle". Pour ce faire, nous avons conduit une étude exploratoire sur 8 cas permettant de mettre en évidence un phénomène émergent. Le cours de notre recherche nous a donc permis de définir le "lifestyle" par opposition au "classique" e

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44

Pillant, Yves. "Une politique de la vulnérabilité est-elle "pensable" ?" Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0009.

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Aujourd’hui notre société met à l’écart les personnes désignées « vulnérables ». Cette mise à l’écart traduit dans les faits un rejet plus global de tout ce qui renvoie à la vulnérabilité. Considérant que celle-ci est une dimension impensée de notre culture, une grande partie de cette thèse consistera à montrer ce qu’il en est de la vulnérabilité et par quels chemins il est possible de la penser. L’exclusion de cette vulnérabilité, qui nous est pourtant constitutive, n’est que le revers de l’identité que chacun veut préciser du haut de sa conscience assurée d’elle-même. Avec Emmanuel Levinas,

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45

KLUGHERTZ, MARTINE. "Feuilletages holomorphes a singularite isolee ayant une infinite de courbes integrales." Toulouse 3, 1988. http://www.theses.fr/1988TOU30094.

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Ce travail est consacre a l'etude des feuilletages singuliers, a singularite isolee, definis sur un voisinage de l'origine dans le plan complexe par un germe de 1-forme holomorphe et qui possedent une infinite de courbes integrales. Ils sont dit m-simples. Dans la premiere partie l'auteur etudie les germes de feuilletages m-simples qui sont sans singularites au bout d'un eclatement. Il obtient la classification topologique et exhibe dans chaque classe de conjugaison un representant defini par une integrale premiere meromorphe. Lorsque le feuilletage eclate possede une seule feuille tangente au

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46

Vidal, Henríquez Estefanía Carolina. "Phase singularity dynamics in out of equilibrium anisotropic systems." Tesis, Universidad de Chile, 2015. http://repositorio.uchile.cl/handle/2250/132990.

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Magíster en Ciencias, Mención Física<br>Esta tesis está enfocada en el estudio de singularidades de fase en el contexto de auto organización en sistemas fuera del equilibrio. Nuestra investigación estuvo focalizada en comprender el surgimiento de vórtices en una válvula de cristal líquido nemático (LCLV por sus siglas en inglés) con anclaje homeotrópico iluminada con un haz gaussiano. Este sistema físico permite la creación de vórtices ópticos que son auto-inducidos y que tienen auto-alineamiento, así como la inducción de vórtices positivos en el cristal líquido. En el primer capítulo se der

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47

McCooey, Conor Gerard, and cmccooey@ieee org. "Characterising Evoked Potential Signals using Wavelet Transform Singularity Detection." RMIT University. Electrical and Computer Engineering, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080829.101311.

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This research set out to develop a novel technique to decompose Electroencephalograph (EEG) signal into sets of constituent peaks in order to better describe the underlying nature of these signals. It began with the question; can a localised, single stimulation of sensory nervous tissue in the body be detected in the brain? Flash Visual Evoked Potential (VEP) tests were carried out on 3 participants by presenting a flash and recording the response in the occipital region of the cortex. By focussing on analysis techniques that retain a perspective across different domains ï¿½ temporal (time)

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48

Struble, Maria Boikova. "The singularity of witness : Memory, poetry and the refugee." Thesis, Lancaster University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.533083.

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49

McFadden, Paul Leslie. "A signature of higher dimensions at the cosmic singularity." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614279.

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50

Curtis, Mark Peter. "Aspects of low Reynolds number microswimming using singularity methods." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:13dcb39b-f5b7-4d46-92d4-21a9afbecd08.

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Three different models, relating to the study of microswimmers immersed in a low Reynolds number ﬂuid, are presented. The underlying, mathematical concepts employed in each are developed using singularity methods of Stokes ﬂow. The ﬁrst topic concerns the motility of an artiﬁcial, three-sphere microswimmer with prescribed, non-reciprocal, internal forces. The swimmer progresses through a low Reynolds number, nonlinear, viscoelastic medium. The model developed illustrates that the presence of the viscoelastic rheology, when compared to a Newtonian environment, increases both the net displacemen

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