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Dissertations / Theses on the topic 'Lure systems'

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Published: 4 June 2021

Last updated: 14 March 2023

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1

Martins, André Christóvão Pio. "Estimativa do conjunto atrator e da área de atração para o problema de Lure estendido utilizando LMI." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-03022016-161753/.

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A análise de estabilidade de sistemas não-lineares surge em vários campos da engenharia. Geralmente, esta análise consiste na determinação de conjuntos atratores estáveis e suas respectivas áreas de atração. Os métodos baseados no método de Lyapunov fornecem estimativas destes conjuntos. Entretanto, estes métodos envolvem uma busca não sistemática por funções auxiliares chamadas funções de Lyapunov. Este trabalho apresenta um procedimento sistemático, baseado no método de Lyapunov, para estimar conjuntos atratores e as respectivas áreas de atração para uma classe de sistemas não-lineares, aqui

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2

Cocetti, Matteo. "Nonlinear and Hybrid Feedbacks with Continuous-Time Linear Systems." Thesis, Toulouse, INSA, 2019. http://www.theses.fr/2019ISAT0014/document.

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Dans cette thèse, nous étudions la rétroaction de systèmes linéaires invariants dans le temps reliés entre eux par trois blocs non linéaires spécifiques : un opérateur de lecture/arrêt, un mécanisme de réinitialisation de commutation et une zone morte adaptative. Cette configuration ressemble au problème de Lure étudié dans le cadre de stabilité absolue, mais les types de non-linéarités considérés ici ne satisfont pas (en général) une condition sectorielle. Ces blocs non linéaires donnent lieu à toute une série de phénomènes intéressants, tels que des ensembles compacts d’équilibres, des ensem

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3

Cocetti, Matteo. "Nonlinear and Hybrid Feedbacks with Continuous-Time Linear Systems." Doctoral thesis, Università degli studi di Trento, 2019. https://hdl.handle.net/11572/368312.

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In this thesis we study linear time-invariant systems feedback interconnected with three specific nonlinear blocks; a play/stop operator, a switching-reset mechanism, and an adaptive dead-zone. This setup resembles the Lure problem studied in the absolute stability framework, but the types of nonlinearities considered here do not satisfy (in general) a sector condition. These nonlinear blocks give rise to a whole range of interesting phenomena, such as compact sets of equilibria, hybrid omega-limit sets, and state constraints. Throughout the thesis, we use the hybrid systems formalism to descr

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4

Gesemann, Sebastian [Verfasser], Gert [Akademischer Betreuer] Lube, Gert [Gutachter] Lube, and Marcus [Gutachter] Baum. "Optimizations of Optical Flow Measurement Systems / Sebastian Gesemann ; Gutachter: Gert Lube, Marcus Baum ; Betreuer: Gert Lube." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://d-nb.info/1169912346/34.

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5

Suto, Alan Pereira 1989. "Análise de estabilidade e desempenho H2 de sistemas do tipo Lur'e com comutação." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265797.

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Orientador: Grace Silva Deaecto<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-27T16:26:54Z (GMT). No. of bitstreams: 1 Suto_AlanPereira_M.pdf: 1433599 bytes, checksum: 847a72c2f990c5ca185477889617c8ff (MD5) Previous issue date: 2015<br>Resumo: Esta dissertação trata do controle H2 de sistemas com comutação do tipo Lur¿e baseado no critério generalizado de Popov. Mais especificamente, uma nova regra de comutação dependente do estado e da entrada externa é proposta de tal forma a assegurar estabilidade ass

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6

Fischmann, Micael. "Sincronização de sistemas lur'e com controle saturante." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/171368.

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Este trabalho apresenta estratégias de controle para a sincronização de dois sistemas não-lineares do tipo Lur'e sob controle saturante. O objetivo no uso de controlador e para que os estados de um sistema escravo sigam a referência dos estados do sistema mestre. Resultados teóricos para a síntese de controladores são propostos considerando diferentes hipóteses sobre a não-linearidade do sistema Lur'e. Primeiramente esta e tratada como uma função genérica que satisfaz globalmente uma condição de setor, enquanto que posteriormente assume-se que a função não-linear e uma função linear por partes

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7

Louis, Julien. "Discrétisation des systèmes de Lur'e : stabilisation et consistance." Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0080/document.

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De récents résultats sur l’étude des systèmes de Lur’e (commutés) à temps discret mettent en avant une fonction de Lyapunov de type Lur’e avancée, dont les lignes de niveau peuvent être non convexes et non connexes. Celles-ci soulèvent de larges questions pour les systèmes de Lur’e à temps discret obtenus par la discrétisation d’un système continu. Les contributions de cette thèse sont d’apporter des éléments de réponse à ces questions. Tout d’abord, le verrou des lignes de niveau non-connexes est levé en construisant à partir de celles-ci une suite décroissante d’ensembles connexes et bornés

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8

Briddon, Raymond James. "'Chinese whispers' - from Leviticus to Luke : (Paul and Luke within the system of purity and impurity in the Herodian Temple period)." Thesis, University of Sheffield, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434487.

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9

Bill, Adam. "Nonnegative feedback systems in population ecology." Thesis, University of Bath, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.698987.

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We develop and adapt absolute stability results for nonnegative Lur'e systems, that is, systems made up of linear part and a nonlinear feedback in which the state remains nonnegative for all time. This is done in both continuous and discrete time with an aim of applying these results to population modeling. Further to this, we consider forced nonnegative Lur'e systems, that is, Lur'e systems with an additional disturbance, and provide results on input-to-state stability (ISS), again in both continuous and discrete time. We provide necessary and sufficient conditions for a forced Lur'e system t

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10

Fang, Ming-Jian. "Notational systems and practices for the lute, vihuela and guitar from the Renaissance to the present day." Virtual Press, 1988. http://liblink.bsu.edu/uhtbin/catkey/558361.

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Discussion in this dissertation is directed toward the lute, vihuela and guitar's notational systems and practices: chapters two, three, four, and five are concerned with the stylistic changes in the notations. The history of the tablatures is presented in a paralled fashion with that of the four-course and five-course guitars. An attempt is made to eliminate the guitarist's lack of knowledge about most practices and about subtle differences in performance. This is accomplished by presenting the development of these notations from the Renaissance to the present day.This study is concerned with

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11

Selosse, Philippe. "Le régime juridique du produit de luxe." Thesis, Lille 2, 2017. http://www.theses.fr/2017LIL20002/document.

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Le produit de luxe n’est pas un bien comme les autres. Ses qualités matérielles et immatérielles lui confèrent une valeur particulière qui oblige son producteur à le vendre dans un environnement commercial adapté. La règle de droit peut-elle considérer cette particularité économique ? Paradoxalement, la France est leader mondiale du marché des produits de luxe, mais nul n’est en mesure d’affirmer avec précision ce qu’est le luxe. Intégrer une notion aussi insaisissable au sein d’un raisonnement juridique semble difficile. Pourtant, les atteintes subies par les titulaires des droits du produit

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12

Holmstedt, Matthias, and Tatiana Golubnic. "The greatest Illusion of mankind : A critical review of the financialsystem." Thesis, Mälardalen University, School of Sustainable Development of Society and Technology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-6591.

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<p><em><p>“Money is controlled by a market; I trust the government has control. I do not think you are right, of course the government has the control and they would not do like this, it cannot be true that my savings is not real, I work hard for them! But just stop it I just do not want to make these kinds of questions to myself; I just need a house, go traveling and have some fun, I do not want to go around and worrying”.(Anonym comment)</p><p>This comment by a person with university degree in business and middle manager at one of the larger Swedish companies, when discussing the thesis you

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13

Lopez, Oscar 1980. "Experimental study of lube oil characteristics in the PCV system and effects on engine oil consumption." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/17952.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2004.<br>Includes bibliographical references (p. 97-99).<br>Engine oil consumption is an important source of hydrocarbon and particulate emissions in modem automobile engines. Great efforts have been made by automotive manufacturers to minimize the impact of oil consumption on engine emissions. Research engineers in the last decade have been trying to study the sources and driving mechanism of oil consumption. In contrast to oil consumption mechanisms in the piston-ring-liner system of the engine, the Positi

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14

Madani, Hadi. "Application of reservoir simulation and flow routing models to the operation of multi-reservoir system in terms of flood controlling and hydropower’s regulation." Thesis, KTH, Mark- och vattenteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171853.

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Dams are amongst the most important components of water resource systems. In many places the water regulated by and stored in dams is essential to meet the development objectives of water supply, flood control, agriculture (i.e. irrigation and livestock), industry, energy generation and other sectors. Previous studies (Gourbesvive, 2008) indicate that in the next 30 years water use will increase by 50% in the world. By 2025 about 4 billion people will live under conditions of severe water stress. Continuous deterioration in water quality in most developing countries is additional challenge. Th

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15

Yamoah, Emmanuel. "A model system using insects to vector Fusarium tumidum for biological control of gorse (Ulex europaeus)." Phd thesis, Lincoln University. Bio-Protection and Ecology Division, 2007. http://theses.lincoln.ac.nz/public/adt-NZLIU20080131.114607/.

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The overall objective of this study was to test the hypothesis that insects can vector F. tumidum conidia to infect gorse plants with the aim of developing an alternative approach to mycoherbicide delivery to control weeds. Four potential insect species (Apion ulicis, Cydia ulicetana, Epiphyas postvittana and Sericothrips staphylinus) were assessed for their ability to vector F. tumidum conidia. To achieve this, the external microflora (bacteria and fungi) and the size and location of fungal spores on the cuticle of these insect species were determined. In addition, the ability of the insects

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16

Silva, Linderberg Isac da. "Reconfiguração de sistemas elétricos de distribuição por meio de aproximação heurística com a equação de movimento do vaga-lume." reponame:Repositório Institucional da UFABC, 2014.

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17

Sun, Yun-Hsiang. "Stability of controlled mechanical system with parametric uncertainties in a realistic friction model." ASME, 2015. http://hdl.handle.net/1993/31633.

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Friction compensation is challenging but imperative for control engineers. For high-performance engineering systems, a friction-model-based controller is typically required to accommodate the nonlinearities arisen from the friction model employed. It is well known that the parameters of the friction model used in the friction compensation are nearly impossible to be accurately identified. Therefore, the objective of this research is to study the effect of these parametric uncertainties on the stability of a set-point position control system. With the above goal in mind, a variety of aspects

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18

Luce, Robert [Verfasser], Jörg [Akademischer Betreuer] Liesen, Reinhard [Akademischer Betreuer] Nabben, and Daniel [Akademischer Betreuer] Kressner. "From linear algebraic systems to elimination graphs and harmonic functions / Robert Luce. Gutachter: Jörg Liesen ; Reinhard Nabben ; Daniel Kressner. Betreuer: Jörg Liesen." Berlin : Technische Universität Berlin, 2014. http://d-nb.info/1067387692/34.

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19

Le, Bihan Bastien. "Étude de la dynamique autour et entre les points de Lagrange de modèles Terre-Lune-Soleil cohérents." Thesis, Toulouse, ISAE, 2017. http://www.theses.fr/2017ESAE0046/document.

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Au cours des dernières décennies, l’étude de la dynamique autour des points de Lagrange des systèmes Terre-Lune (EMLi) et Terre-Soleil (SELi) a ouvert de nouvelles possibilités pour les orbites et les transferts spatiaux. Souvent modélisés comme des Problèmes à Trois Corps (CR3BP) distincts, ces deux systèmes ont également été combinés pour produire des trajectoiresà faible coût dans le système Terre-Lune-Soleil étendu. Cette approximation (PACR3BP) a permis de mettre en évidence un réseau à faible énergie de trajectoires (LEN) qui relie la Terre, la Lune, EML1,2 et SEL1,2. Cependant, pour cha

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20

Wondimu, Nahom Abebe. "SIMULATED AND EXPERIMENTAL SLIDING MODE CONTROL OF A HYDRAULIC POSITIONING SYSTEM." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1145419922.

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21

Forsberg, Lars L. "Site variability and settlement patterns an analysis of the hunter-gatherer settlement system in the Lule River valley, 1500 B.C.-B.C./A.D. /." Umeå : Dept. of Archaeology, University of Umeå, 1985. http://catalog.hathitrust.org/api/volumes/oclc/16279966.html.

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22

Sobczyk, Sobrinho Mario Roland. "Controle em cascata e a estrutura variável com adaptação de parâmetros e compensação de atrito de um servoposicionador pneumático." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/17563.

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Este trabalho discute o problema do controle preciso do seguimento de trajetórias de um servoposicionador pneumático. Um modelo matemático para o servoposicionador pneumático é apresentado, com atenção especial sendo dada à modelagem dos efeitos do atrito. Para a representação desses efeitos, é proposta uma modificação da estrutura matemática de um modelo de atrito amplamente utilizado no contexto dos algoritmos de controle em tempo real de servomecanismos (o modelo LuGre). A validade da aproximação proposta é justificada por meio de argumentos tanto analíticos como baseados em simulações. Com

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23

Majdoub, Fida. "Innovative measurement of ultra-low friction : analysis of dynamic free responses characterized by damped oscillatory motion." Phd thesis, Ecole Centrale de Lyon, 2013. http://tel.archives-ouvertes.fr/tel-01001752.

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Réduire l'énergie générée par le frottement et dissipée dans les systèmes mécaniques réels est un des challenges actuels en tribologie. Ce point représente une importance toute particulière dans le domaine des transports terrestres. En réponse à cette nécessité, les constructeurs automobiles se concentrent sur la réduction de la consommation d'énergie en sélectionnant des lubrifiants et des matériaux appropriés d'une part et les systèmes mécaniques performants d'autre part. Grâce à leurs propriétés physiques et tribologiques en termes de réduction de la friction et de l'usure, les couches minc

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Lizy-Destrez, Stéphanie. "Operational scenarios optimization for resupply of crew and cargo of an International gateway Station located near the Earth-Moon-Lagrangian point-2." Thesis, Toulouse, ISAE, 2015. http://www.theses.fr/2015ESAE0034/document.

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Ce projet se place dans le contexte des futures missions habitées d’exploration du système solaire (avec un horizon de 2025), en respect de la feuille de route proposée par l’ISECG (International Space Exploration Coordination Group) [1]. Une nouvelle avancée serait de maintenir, à un des points de Lagrange du système Terre-Lune, en avant-poste, une station spatiale qui faciliterait l’accès vers les destinations telles que la Lune, Mars et les astéroïdes et permettrait de tester certaines technologies, notamment avant de les employer pour des missions plus lointaines. Un des principaux défis s

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Lucas, D. Pulane. "Disruptive Transformations in Health Care: Technological Innovation and the Acute Care General Hospital." VCU Scholars Compass, 2013. http://scholarscompass.vcu.edu/etd/2996.

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Advances in medical technology have altered the need for certain types of surgery to be performed in traditional inpatient hospital settings. Less invasive surgical procedures allow a growing number of medical treatments to take place on an outpatient basis. Hospitals face growing competition from ambulatory surgery centers (ASCs). The competitive threats posed by ASCs are important, given that inpatient surgery has been the cornerstone of hospital services for over a century. Additional research is needed to understand how surgical volume shifts between and within acute care general hospitals

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26

Salsone, Silvia, Carlo Versace, Giuseppe Lombardo, Christian Zakian, and Roberto Bartolino. "Optical systems for diagnostics: Near-Infrared Imaging technique for detection of dental demineralisation." Thesis, 2012. http://hdl.handle.net/10955/1157.

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Dottorato di Ricerca in Science and Technique of Mesophases and Molecular Materials, Bernardino Telesio, Cycle XXIV a.a. 2011-2012<br>In dentistry, a correct detection of caries severity is still a challenging descision-making task that crucially a ects the choice for the best treatment plan. The challenge is to nd both the most objective parameters to detect caries at di erent stages (from an early reversibile stage to a severe one) and the most reliable method(s) that should be used to distinguish these stages. Currently, methods used in clinics are visual inspection, aided with lig

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27

Anderson, Janice. "Closed systems : Alexandra Luke, Hortense Gordon and the Canadian art history canon." Thesis, 1995. http://spectrum.library.concordia.ca/89/1/MM05143.pdf.

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The marginalization of women's art within the Canadian art history canon articulates the dichotomy which exists between the practice of making art in a Canadian context and the selective recording of that practice within written history. Canadian painters Alexandra Luke and Hortense Gordon made significant contributions to the development and acceptance of abstract art in Canada, not simply through their own art practice, but also as teachers, lecturers and exhibition organizers, especially in Ontario. In spite of this contribution and the local, national and international reputations that bot

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28

Chao-HsienYeh and 葉照賢. "RC Residential Design with Open Piping System- A Case of Shih’s House in Luye, Taitung." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/z8upn8.

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碩士<br>國立成功大學<br>建築學系碩士在職專班<br>104<br>This thesis is divided into five chapters. The first chapter, the introduction, the content describes this research motive, the topic, the scope and the research technique. The second chapter, case studies and the correlation design research, according to residential space and related equipment maintenance requirements for the issue of research, and design prototype research correlation data and the case studies carry on the review and the assessment, whereby the proposed device context of the establishment method of Environment Module. The third chapter,

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29

Yu, Chih-Wei, and 尤誌緯. "High-speed-high-precision Micro Motion Control Design and Tuning for CNC Servo Systems with the LuGre Friction Model." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/28721122191563483144.

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碩士<br>國立交通大學<br>電控工程研究所<br>102<br>In the pecking machining process for 3C industry electronics board, the major concerns are the servo motor control design, the friction compensation of the machine, and suppression of the external disturbance. Because the micro-motion command of a pecking process is in a high frequency and high-speed repetitive motion, the effect of friction to motion error thus becomes relatively more dominant. This Thesis applies the Kalman filter to suppress the noise of the current feedback in CNC servo motors. Moreover, the disturbance observer (DOB) was applied to the CN

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30

Walker, Justine. "Spinning in my mother's garden : a search for subjectivity : an exegesis presented in partial fulfillment of the requirements for the degree of Master of Fine Arts at Massey University, Wellington, New Zealand." 2009. http://hdl.handle.net/10179/1436.

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Appendix C contains video files which were unable to be uploaded onto the institutional repository, but are available with the hard copy of the thesis.<br>Is female subjectivity possible within a patriarchal system? The following discussion investigates feminist thought though equality, difference and androgyny, mapping the achievements, setbacks, advantages and disadvantages of each through the theories of Luce Irigaray, Jacques Derrida, Julia Kristeva and others. Discussing Irigaray’s thoughts on disrupting the symbolic with mimesis and hysteria, how intersubjectivity might be possible throu

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Delaune, J. "Navigation visuelle pour l'atterrissage planétaire de précision indépendante du relief." Phd thesis, 2013. http://tel.archives-ouvertes.fr/tel-01021431.

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Cette thèse présente Lion, un système de navigation utilisant des informations visuelles et inertielles pour l'atterrissage planétaire de précision. Lion est conçu pour voler au-dessus de n'importe quel type de terrain, plat ou accidenté, et ne fait pas d'hypothèse sur sa topographie. Faire un atterrir un véhicule d'exploration planétaire autonome à moins de 100 mètres d'un objectif cartographié est un défi pour la navigation. Les approches basées vision tentent d'apparrier des détails 2D détectés dans une image avec des amers 3D cartographiés pour atteindre la précision requise. Lion utilise

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YOUNGHU and 胡洋. "The research set up of the market environment of products and Internet sales system, Using Fishing Lures as an example." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/99866460576792342576.

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碩士<br>輔仁大學<br>管理學院經營管理碩士學程<br>97<br>Follow and administrative agricultural commission statistics show, this recreation activity of fishing, already about 1 million people have been often engaged in Taiwan, have already become one of the recreation activities that Taiwanese has mainly carried on; In American-European various countries, fishing bait used, for a long time in order to by the traditional animal bait, change into, imitate animal false bait of bait, call that, simulation various characteristics of bait, reach to let the big fish be attacked, and then angle to the purpose of the fish.

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