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Dissertations / Theses on the topic 'Optical topology'

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1

Queraltó, Isach Gerard. "Supersymmetry and topology in coupled optical waveguides." Doctoral thesis, Universitat Autònoma de Barcelona, 2020. http://hdl.handle.net/10803/670742.

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La integració de tots els components bàsics per a la generació, manipulació i detecció de llum en xips òptics està impulsant avenços científics i tecnològics, per exemple, en el desenvolupament de tecnologies de la informació o de dispositius de detecció per a les tecnologies quàntiques. Degut a la seva flexibilitat, escalabilitat i la possibilitat d’observar directament l’evolució de la funció d’ona utilitzant senzilles tècniques de tractament d’imatges, les estructures fotòniques integrades són una plataforma ideal per a la simulació quàntica, és a dir, per emular fenòmens quàntics que apare
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O'Holleran, Kevin. "Fractality and topology of optical singularities." Thesis, University of Glasgow, 2008. http://theses.gla.ac.uk/470/.

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Optical singularities are points in complex scalar and vector fields where a property of the field becomes undefined (singular). In complex scalar fields these are phase singularities and in vector fields they are polarisation singularities. In the former the phase of the field is singular and in the latter it is the polarisation ellipse axes. In three dimensions these singularities are lines and natural light fields are threaded by these lines. The interference between three, four and five waves is investigated and inequalities are given which establish the topology of the singularity lines i
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Elibol, Armagan. "Efficient topology estimation for large scale optical mapping." Doctoral thesis, Universitat de Girona, 2011. http://hdl.handle.net/10803/41944.

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Large scale image mosaicing methods are in great demand among scientists who study different aspects of the seabed, and have been fostered by impressive advances in the capabilities of underwater robots in gathering optical data from the seafloor. Cost and weight constraints mean that lowcost Remotely operated vehicles (ROVs) usually have a very limited number of sensors. When a low-cost robot carries out a seafloor survey using a down-looking camera, it usually follows a predetermined trajectory that provides several non time-consecutive overlapping image pairs. Finding these pairs (a process k
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Fard, Pedram J. "Dynamic reconfiguration of network topology in optical networks." College Park, Md. : University of Maryland, 2007. http://hdl.handle.net/1903/7412.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2007.<br>Thesis research directed by: Electrical 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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Smith, Craig Scott. "Implementing pipelined circuit switching on the PICA aligned offset cube topology." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/13362.

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Shim, Yohan. "Topology control and pointing in free space optical networks." College Park, Md.: University of Maryland, 2007. http://hdl.handle.net/1903/7773.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2007.<br>Thesis research directed by: Dept. of Civil and Environmental 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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Youssef, Mina Nabil. "Optimal topology design for virtual networks." Thesis, Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/560.

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Wikaisuksakul, Siripen. "Virtual topology design for distributed optical packet-switched metro networks." Thesis, University of Essex, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426021.

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Kashyap, Abhishek. "Profile based topology control and routing in wireless optical networks." College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/1440.

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Thesis (M.S.) -- University of Maryland, College Park, 2004.<br>Thesis research directed by: Dept. of Electrical and Computer 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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Haque, Anwar. "Regular graph-based logical topology design in multi-hop optical networks." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62220.pdf.

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Yao, Norman Ying. "Topology, Localization, and Quantum Information in Atomic, Molecular and Optical Systems." Thesis, Harvard University, 2014. http://dissertations.umi.com/gsas.harvard:11686.

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The scientific interface between atomic, molecular and optical (AMO) physics, condensed matter, and quantum information science has recently led to the development of new insights and tools that bridge the gap between macroscopic quantum behavior and detailed microscopic intuition. While the dialogue between these fields has sharpened our understanding of quantum theory, it has also raised a bevy of new questions regarding the out-of-equilibrium dynamics and control of many-body systems. This thesis is motivated by experimental advances that make it possible to produce and probe isolated, stro
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Weng, Libo. "Polymer Stabilized Liquid Crystals: Topology-Mediated Electro-Optical Behavior And Applications." Kent State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=kent1460763169.

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Kakkar, Aditya. "Theoretical Investigation of a new OFDM Access-Network Topology (OTONES)." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-128712.

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Recent studies on growth of telecomm sector depict an ever rising demand for high bandwidth applications such as on-line gaming, high definition television and many more. This demand is coupled with increase in internet connected utilities per house hold - each requiring a portion of bandwidth. The fast development of broadband telecommunication services calls for an upgrade of access infrastructure. This challenge could be met by technologies such as Fiber-To-The-Home/Building (FTTH/B) point-to-multipoint (P2MP) optical access networking. Further, FTTH is also widely regarded as a future proo
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Baylon, Fuentes Antonio. "Ring topology of an optical phase delayed nonlinear dynamics for neuromorphic photonic computing." Thesis, Besançon, 2016. http://www.theses.fr/2016BESA2047/document.

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Aujourd'hui, la plupart des ordinateurs sont encore basés sur des concepts développés il y a plus de 60 ans par Alan Turing et John von Neumann. Cependant, ces ordinateurs numériques ont déjà commencé à atteindre certaines limites physiques via la technologie de la microélectronique au silicium (dissipation, vitesse, limites d'intégration, consommation d'énergie). Des approches alternatives, plus puissantes, plus efficaces et moins consommatrices d'énergie, constituent depuis plusieurs années un enjeu scientifique majeur. Beaucoup de ces approches s'inspirent naturellement du cerveau humain, d
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Agrawal, Gaurav Medhi Deepankar. "Lightpath topology configuration for wavelength-routed IP/MPLS networks in a multi-layered environment integrated models, algorithms, and analysis /." Diss., UMK access, 2007.

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Thesis (Ph. D.)--School of Computing and Engineering. University of Missouri--Kansas City, 2007.<br>"A dissertation in computer networking and telecommunication networking." Advisor: Deep Medhi. Typescript. Vita. Title from "catalog record" of the print edition Description based on contents viewed Jan. 24, 2008. Includes bibliographical references (leaves 130-138). Online version of the print edition.
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Chapman, David. "Dark signalling and code division multiple access in an optical fibre LAN with a bus topology." Thesis, Open University, 2002. http://oro.open.ac.uk/22800/.

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This thesis describes an optical fibre network that uses a bus topology and Code Division Multiple Access (CDMA). Various potential configurations are analysed and compared and it is shown that a serious limitation of optical CDMA schemes using incoherent correlators is the effect of optical beating due to the presence of multiple incoherent optical signals at the receiver photodiode. The network proposed and analysed in this thesis avoids beating between multiple optical fields because it only uses a single, shared, optical source. It does this through the SLIM (Single Light-source with In-li
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Guan, Kyle Chi. "Cost-effective optical network architecture : a joint optimization of topology, switching, routing and wavelength assignment." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/38678.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.<br>Includes bibliographical references (p. 279-285).<br>To provide end users with economic access to high bandwidth, the architecture of the next generation metropolitan area networks (MANs) needs to be judiciously designed from the cost perspective. In addition to a low initial capital investment, the ultimate goal is to design networks that exhibit excellent scalability - a decreasing cost-per-node-per-unit-traffic as user number and transaction size increase. As an effort to a
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Abbas, Rafed Sabbar. "Wavelengths switching and allocation algorithms in multicast technology using m-arity tree networks topology." Thesis, Brunel University, 2014. http://bura.brunel.ac.uk/handle/2438/10346.

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In this thesis, the m-arity tree networks have been investigated to derive equations for their nodes, links and required wavelengths. The relationship among all parameters such as leaves nodes, destinations, paths and wavelengths has been found. Three situations have been explored, firstly when just one server and the leaves nodes are destinations, secondly when just one server and all other nodes are destinations, thirdly when all nodes are sources and destinations in the same time. The investigation has included binary, ternary, quaternary and finalized by general equations for all m-arity t
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Tejkal, Vladimír. "Návrh optické přístupové sítě FTTx." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218198.

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The main goal of this diploma thesis was to implement the proposal of optical access networks in the selected location. Introduce is focused on the physical layer of network. This includes optical fibers, optical cables, connectors, optical splitters, and more. According to the place of termination of optical fiber will be studied best FTTx connections. According to network topology distinguished point to point and point to multipoint network. Networks points to point are also known as an active optical network and for each user are restricted to a separate fiber. Point to multipoint networks
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Nascimento, Luiz Henrique Bonani do 1977. "Proposta de arquitetura inovadora para redes de pacotes opticos baseadas em chaveamento fotonico." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260716.

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Orientadores: Edson Moschim, Felipe Rudge Barbosa<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-07T06:09:06Z (GMT). No. of bitstreams: 1 Nascimento_LuizHenriqueBonanido_D.pdf: 2297657 bytes, checksum: b04918af9ef98f4cae4bd6c3d6d4c0ca (MD5) Previous issue date: 2006<br>Resumo: Hoje em dia, como uma multiplicidade muito grande de tecnologias converge para as redes fotônicas, a demanda por vazão cresce. Os protocolos para acesso múltiplo e simultâneo às portas de entrada da rede, bem como a aborda
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Flores-Montoya, Enrique. "Etude expérimentale de la stabilisation des flammes dans des brûleurs poreux : application des diagnostics optiques dans des géométries imprimées en 3D." Electronic Thesis or Diss., Université de Toulouse (2023-....), 2024. http://www.theses.fr/2024TLSEP087.

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La transition vers une économie neutre en carbone est confrontée à deux défis majeurs : le stockage de l'excès d'énergie provenant des énergies renouvelables et la décarbonation des processus de combustion dans les secteurs difficiles à électrifier. La stratégie Power to Gas (P2G) propose de résoudre ces problèmes en substituant partiellement l'hydrogène dans le réseau actuel de gaz naturel. Cependant, cela nécessite le développement de brûleurs flexibles capables de s'adapter à des niveaux variables d'hydrogène dans le réseau. Cela est compliqué à cause des différences entre les propriétés de
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Cardoso, Karyna Silveira. "Um estudo da aplica??o de backhaul h?brido de RoF e r?dio em RSSF." Pontif?cia Universidade Cat?lica de Campinas, 2015. http://tede.bibliotecadigital.puc-campinas.edu.br:8080/jspui/handle/tede/555.

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Made available in DSpace on 2016-04-04T18:31:43Z (GMT). No. of bitstreams: 1 KARYNA SILVEIRA CARDOSO.pdf: 2314345 bytes, checksum: 65e604b78ddbbbc8d0efd8e49a70ac86 (MD5) Previous issue date: 2015-06-16<br>This study proposes a strategy to access sensor nodes of a wireless sensor network clumped together in clusters that come together in cells through a hybrid radio topology and / or fiber. In this topology, communication between wireless sensor networks and the repeater is via radio, while the backhaul communication between the base and repeaters will be hybrid and can use radio or fiber.
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Lindner, Brian Siegfried. "Exploiting process topology for optimal process monitoring." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/95987.

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Thesis (MEng) -- Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: Modern mineral processing plants are characterised by a large number of measured variables, interacting through numerous processing units, control loops and often recycle streams. Consequentially, faults in these plants propagate throughout the system, causing significant degradation in performance. Fault diagnosis therefore forms an essential part of performance monitoring in such processes. The use of feature extraction methods for fault diagnosis has been proven in literature to be useful in application to chemical or min
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Swirydowicz, Katarzyna. "Strategies For Recycling Krylov Subspace Methods and Bilinear Form Estimation." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/78695.

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The main theme of this work is effectiveness and efficiency of Krylov subspace methods and Krylov subspace recycling. While solving long, slowly changing sequences of large linear systems, such as the ones that arise in engineering, there are many issues we need to consider if we want to make the process reliable (converging to a correct solution) and as fast as possible. This thesis is built on three main components. At first, we target bilinear and quadratic form estimation. Bilinear form $c^TA^{-1}b$ is often associated with long sequences of linear systems, especially in optimization probl
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Hagen, David Robert. "Parameter and topology uncertainty for optimal experimental design." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/90148.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Biological Engineering, 2014.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 157-169).<br>A major effort of systems biology is the building of accurate and detailed models of biological systems. Because biological models are large, complex, and highly nonlinear, building accurate models requires large quantities of data and algorithms appropriate to translate this data into a model of the underlying system. This thesis describes the development and application of several algorithms for
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Prudík, Jiří. "Model metropolitní optické sítě." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217666.

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The purpose of this master’s thesis is foremost to provide a simple guide how to build elements of optical metropolitan area network. The basic model consists to sequence of construction, network topology, passive and active parts. The collection contains examples of alternative technology such as Wireless LAN with different frequency. The optical network construction based on optical cable, fibres, splices, trays, adapters, connectors and active parts for example a lot of media convertor models. After that there are demonstrating type of wavelength division multiplexer used in metropolitan ar
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Villalba, Tany Villalba. "Distribuição de divisores de potência em redes ópticas passivas utilizando algoritmos genéticos." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/18/18155/tde-19032010-144608/.

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O objetivo deste trabalho é a otimização da distribuição dos divisores de potência utilizados em redes ópticas passivas, baseados na técnica de algoritmos genéticos, onde cada divisor possui uma única entrada e diversas saídas. O cenário prático de distribuição compreende uma determinada cidade, onde as ruas são as possíveis vias e as casas ou prédios são os possíveis terminais. Partindo de um ponto inicial (OLT - Optical Line Terminator), em geral a central de distribuição, chega-se aos usuários finais (ONUs - Optical Network Units) passando pelos divisores. Observa-se que temos pelo menos um
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Boutros, Fouad. "Nouvelles approches d'optimisation multi-objectifs pour les Microgrids DC Autonomes." Electronic Thesis or Diss., Nantes Université, 2025. http://www.theses.fr/2025NANU4002.

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Dans un monde confronté à l’urgence du changement climatique, les microgrids offrent une solution prometteuse pour concevoir des systèmes énergétiques durables. En particulier, les microgrids en courant continu (DC) isolés, fonctionnant indépendamment des réseaux électriques traditionnels, présentent des défis et des opportunités uniques. Le microgrid étudié dans ce travail est un microgrid DC isolé, composé de panneaux solaires, de batteries, d’un générateur diesel ainsi que de charges électriques résidentielles. Ce travail s’inscrit dans un effort global visant à réduire les émissions de gaz
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Birger, Christopher. "Optimal Coherent Reconstruction of Unstructured Mesh Sequences with Evolving Topology." Thesis, Linköpings universitet, Medie- och Informationsteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-112095.

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This thesis work will investigate and implement a method for reconstructing an unstructured mesh sequence with evolving topology. The goal of the method is to increase frame-to-frame coherency of the triangulation. The motivation of the method is that many of current state-of-the-art mesh compression and decimation algorithms for mesh sequences are based on static connectivity.
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Chopinaud, Aurélien. "Atomes et vortex optiques : conversion de moments orbitaux de lumière en utilisant la transition à deux photons 5S-5D du rubidium." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS155/document.

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Le moment orbital angulaire (OAM) de la lumière est une grandeur quantifiée associée à la phase d’un vortex optique et est actuellement une des variables explorées pour les technologies quantiques.Dans ce contexte, cette thèse étudie expérimentalement la conversion de vortex optiques par une vapeur de rubidium, via la transition Raman stimulée à deux photons 5S₁/₂ − 5D₅/₂. Quand les atomes sont soumis à deux lasers respectivement à 780 nm et 776 nm, ils génèrent des rayonnements cohérents, infrarouge à 5,23 μm et bleu à 420 nm. On examine le rayonnement bleu lorsque l’un des lasers ou les deux
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Valero, Carlos. "On the geometry and topology of hyperbolic variational symbols." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302354.

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Otomori, Masaki. "Topology optimization for the micro- and macrostructure designs in electromagnetic wave problems." 京都大学 (Kyoto University), 2013. http://hdl.handle.net/2433/174877.

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Pennington, Nicholas. "Network Properties of Optically Linked Planetary Satellite Systems." OpenSIUC, 2020. https://opensiuc.lib.siu.edu/theses/2702.

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With plans for advancing into the rest of the solar system in the coming decades, an understanding of how interlinked satellite systems behave as a network will be essential. The relatively recent development of optics as a method of space communication means that inter-satellite networks are more feasible than ever. That said, there are currently no analyses which take into account a planet-wide, largely uncoordinated, optically linked satellite network. To provide a look at the properties of such a network, movement and connections of Earth's currently active satellites were simulated based
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Patel, Jiten. "Optimal design of mesostructured materials under uncertainty." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31829.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2010.<br>Committee Chair: Choi, Seung-Kyum; Committee Member: Muhanna, Rafi; Committee Member: Rosen, David. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Potgieter, Johannes Hendrik Jacob. "Optimal topology and critical evaluation of slip synchronous permanent magnet wind generator." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86430.

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Thesis (PhD)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: In this study the recently proposed slip-synchronous permanent magnet generator (SS-PMG), is considered as an alternative to other wind generator topologies. The SS-PMG is connected directly to the grid without the need for a power electronic converter and it can also be connected directly to the turbine without a gearbox. Due to the SS-PMG requiring no gearbox or power electronic converter it is evident that this type of generator have a significant advantage regarding reduced maintenance and operation costs. The SS-PMG co
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Curwen, Vincent, and Alexander Saxin. "Analysis and optimal design of a titanium aircraft bracket using topology optimization." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-20004.

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Sustainable engineering within product development is becoming increasingly important with the ever-growing amounts of resources used to sustain the human way of life in modern times. An effective way of helping to deal with this problem is to reduce the resources used in products and components across the world. This thesis explores the effectiveness of the topology optimization method in achieving significant material reductions whilst maintaining structural strength and integrity when designing an aircraft component. The part is an engine handling mounting bracket which will be optimized to
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Hammarström, Emil. "Network optimisation and topology control of Free Space Optics." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-124546.

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In communication networks today, the amount of users and traffic is constantly increasing. This results in the need for upgrading the networks to handle the demand. Free space optics is a technique which is relatively cheap with high capacity compared to most systems today. On the other hand, FSO have some disadvantages with the effects on the system by, for instance, turbulence and weather. The aim of the project is to investigate the use of network optimization for designing an optimal network in terms of capacity and cost. Routing optimization is also covered in terms of singlepath and mult
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Nordkvist, Tobias. "Network optimisation and topology control of Free Space Optics." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-130003.

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In communication networks today, the amount of users and traffic is constantly increasing. This results in the need for upgrading the networks to handle the demand. Free space optics, FSO, is a technique which is relatively cheap with high capacity compared to most systems today. On the other hand, FSO have some disadvantages with the effects on the system by, for instance, turbulence and weather. The aim of the project is to investigate the use of network optimization for designing an optimal network in terms of capacity and cost. Routing optimization is also covered in terms of singlepath an
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Zhao, Wulue. "Shape and medial axis approximation from samples." Columbus, Ohio : Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1059593634.

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Thesis (Ph. D.)--Ohio State University, 2003.<br>Title from first page of PDF file. Document formatted into pages; contains xvi, 131 p.; also includes graphics (some col.). Includes abstract and vita. Advisor: Tamal K. Dey, Dept. of Computer and Information Science. Includes bibliographical references (p. 126-131).
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Garland, Anthony. "Optimal Design of Gradient Materials and Bi-Level Optimization of Topology Using Targets (BOTT)." Thesis, Clemson University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10616438.

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<p> The objective of this research is to understand the fundamental relationships necessary to develop a method to optimize both the topology and the internal gradient material distribution of a single object while meeting constraints and conflicting objectives. Functionally gradient material (FGM) objects possess continuous varying material properties throughout the object, and they allow an engineer to tailor individual regions of an object to have specific mechanical properties by locally modifying the internal material composition. A variety of techniques exists for topology optimization,
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Pingen, Georg. "Optimal design for fluidic systems: Topology and shape optimization with the lattice Boltzmann method." Connect to online resource, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3315771.

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Martins, Indayara Bertoldi. "Analise de trafego, capacidade e proteção em redes de pacotes opticos com chaveamento fotonico." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258937.

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Orientadores: Edson Moschim, Felipe Rudge Barbosa<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-09T16:46:35Z (GMT). No. of bitstreams: 1 Martins_IndayaraBertoldi_M.pdf: 1239150 bytes, checksum: 785fa753532d04d698ee47a542591430 (MD5) Previous issue date: 2007<br>Resumo: Neste trabalho investigamos o desempenho de redes ópticas avançadas, em particular redes de chaveamento de pacotes ópticos (Optical Packet Switching Network-OPSN), constituídos por arquiteturas com topologias em malha e nós
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Carlsson, Jesper. "Pontryagin approximations for optimal design." Licentiate thesis, Stockholm, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4089.

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Pavan, Claunir. "Dimensioning of multilayer optical networks." Doctoral thesis, Universidade de Aveiro, 2007. http://hdl.handle.net/10773/3722.

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Doutoramento em Engenharia Electrónica<br>Este trabalho apresenta um estudo sobre o dimensionamento de redes ópticas, com vistas a obter um modelo de dimensionamento para redes de transporte sobreviventes. No estudo utilizou-se uma abordagem estatística em detrimento à determinística. Inicialmente, apresentam-se as principais tecnologias e diferentes arquitecturas utilizadas nas redes ópticas de transporte. Bem como os principais esquemas de sobrevivência e modos de transporte. São identificadas variáveis necessárias e apresenta-se um modelo dimensionamento para redes de transporte,
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45

Saleh, Salah H. A. "The integration of topology and entropy-based reliability into the optimal design of water distribution systems." Thesis, University of Strathclyde, 2013. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25553.

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Establishing a new water distribution system (WDS) essentially involves proper planning of system components to minimize cost, sizing of such components to operate under normal operating conditions and assessing system performance under abnormal operating conditions to minimize effects of components failure. This thesis investigates combinng these optimization aspects while specifically focusing on optimal planning of system components amongst all possible topologies, optimal design over all possible combinations of components sizes, and improving system performance over all possible levels of
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Jakobsson, Elvis. "Topology-guided analysis and visualization of charge density fields." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-157771.

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Direct volume rendering techniques for scalar fields make use of transfer functions to map optical properties to the field; the field can subsequently be visualized through the drawing of isosurfaces in the volume spanned by the field. The utility of this approach is limited in the case of nested or clustered structures with the same isovalue and further does not easily allow for quantitative measurements of the visualized data. This report explores the use of topological structures (contour trees and Morse-Smale complexes) as an augmentation of traditional direct volume rendering and describe
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Guillot, Martin. "Bloch Eigenvector structure tomography in polaritonic lattices for multiband topology." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP164.

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Les exciton-polaritons sont des quasi-particules composites constituées de photons en cavité fortement couplés à des excitons en puits quantiques. Grâce à leur composante photonique, les polaritons peuvent être confinés dans des cavités de l'ordre du micromètre assemblées en réseaux périodiques, tandis que leur composante excitonique est responsable de leurs grandes non-linéarités de Kerr et de leur susceptibilité aux champs magnétiques. Cette thèse porte sur l'étude des propriétés topologiques des réseaux de polaritons, qui sont encodées dans la structure globale des vecteurs propres de Bloch
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Junior, Jonas Rubini. "Desenvolvimento de célula Pockels na topologia reflexiva aplicada a TP óptico de alta tensão." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-29062016-080928/.

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O trabalho aborda o estudo e o desenvolvimento de um interferômetro sensor de alta tensão, baseado em célula Pockels (modulador eletro-óptico) na topologia reflexiva (\"double pass\") e que é parte integrante de um Transformador de Potencial Óptico (TPO), que utiliza sistema interferométrico de luz branca (WLI-White Light Interferometry), que está sendo desenvolvido pelo grupo do Laboratório de Sensores Ópticos (LSO) do PEA-EPUSP, e é capaz de medir diretamente tensões presentes em sistema elétrico de potência (SEP) classe 69kVRMS. Para desenvolver o tema proposto foi feita uma revisão da lite
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Frentrup, Peter. "Optimal Trading with Multiplicative Transient Price Impact for Non-Stochastic or Stochastic Liquidity." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/20600.

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Diese Arbeit untersucht eine Reihe multiplikativer Preiseinflussmodelle für das Handeln in einer riskanten Anlage. Unser risikoneutraler Investor versucht seine zu erwartenden Handelserlöse zu maximieren. Zunächst modellieren wir den vorübergehende Preiseinfluss als deterministisches Funktional der Handelsstrategie. Wir stellen den Zusammenhang mit Limit-Orderbüchern her und besprechen die optimale Strategie zum Auf- bzw. Abbau einer Anlageposition bei a priori unbeschränkem Anlagehorizont. Anschließend lösen wir das Optimierungsproblem mit festem Anlagehorizon in zwei Schritten. Mittels Varia
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Ziaie, Somayeh. "Techno-economic analysis of optical access networks." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11842.

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Mestrado em Engenharia de Computadores e Telemática<br>Esta dissertação tem como objectivo analisar os principais problemas que os fornecedores de serviços têm que considerar ao implementar e ao migrar as redes de acesso ópticas existentes e futuras. Iremos considerar a migração da rede GPON, como rede de acesso actual, para as Redes Óticas de Acesso de Próxima Geração (NG-OANs), como a WDM-PON e a OFDM-PON. O trabalho foca-se nos Custos de Capital (CapEx) por utilizador, e em três factores que condicionam este custo: densidade populacional, topologia da rede e custo dos componentes. Uma visã
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