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Dissertations / Theses on the topic 'Passing control'

Author: Grafiati

Published: 5 June 2025

Last updated: 16 July 2025

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1

Pereira, Rubem Kicis Torrents. "Token passing medium access control protocol performance under asymmetric service." Thesis, Manchester Metropolitan University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362694.

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2

Clifford, Christopher J. "An Investigation of Physics and Control of Flow Passing a NACA 0015 in Fully-Reversed Condition." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1440156651.

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3

Suherman, Surjani. "Transient analysis and vibration suppression of a cracked rotating shaft with ideal and nonideal motor passing through a critical speed." Diss., This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-06062008-151648/.

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4

De, Bacco Caterina. "Decentralized network control, optimization and random walks on networks." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112164/document.

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Dans les dernières années, plusieurs problèmes ont été étudiés à l'interface entre la physique statistique et l'informatique. La raison étant que, souvent, ces problèmes peuvent être réinterprétés dans le langage de la physique des systèmes désordonnés, où un grand nombre de variables interagit à travers champs locales qui dépendent de l'état du quartier environnant. Parmi les nombreuses applications de l'optimisation combinatoire le routage optimal sur les réseaux de communication est l'objet de la première partie de la thèse. Nous allons exploiter la méthode de la cavité pour formuler des al

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Godwin, Cherese. "A study of the relationship between incarceration, birth rate, and racial disparities among African Americans since the passing of the violent crime control and law enforcement act of 1994." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 2015. http://digitalcommons.auctr.edu/dissertations/3124.

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This study examined the relationship of incarceration, birth rate, and racial disparities based on the results of the survey respondents and supporting documentation from scholarly authors. The linkages between incarceration, birth rate, and racial disparities among African Americans have only recently been studied; much more work remains to improve our understanding of these relationships. The target population for the research was composed of adults ages 18 and up. Ninety-one respondents were selected utilizing nonprobability convenience sampling from among the participants of the selected 1

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6

Laverty, Stephen William. "Detection of Nonstationary Noise and Improved Voice Activity Detection in an Automotive Hands-free Environment." Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-051105-110646/.

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7

Sverzuti, Victor. "Sistema de posicionamento manual servo-assistido por freio." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/3/3152/tde-30122014-110151/.

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Máquinas manuais são utilizadas em diversos processos, como na usinagem mecânica. Apesar da existência de máquinas automatizadas, com boa precisão e conformidade, as máquinas manuais de usinagem possuem baixo custo inicial e alta flexibilidade de produção, sendo empregadas para produção de lotes pequenos ou peças únicas, como protótipos ou peças empregadas em pesquisas científicas. O operador humano possui mais flexibilidade que qualquer sistema automatizado por ter a capacidade de tomar decisões. O posicionamento da ferramenta de usinagem através de uma mesa linear com parafuso e porca, acion

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8

D\'Assunção, Douglas. "Circuito piezelétrico chaveado para controle de vibrações e coleta de energia em uma seção típica aeroelástica." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/18/18148/tde-18092013-144556/.

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Os materiais inteligentes têm sido utilizados em problemas de controle de vibrações e conversão de energia mecânica em energia elétrica. Apesar das diferentes opções existentes, os piezelétricos têm recebido grande atenção devido a facilidade de instalação, além de possibilidade de uso como sensores ou atuadores. Em termos de sistemas de controle utilizando materiais piezelétricos, dois grandes grupos podem ser encontrados: os controladores passivos e os ativos. Os controladores ativos utilizam o efeito piezelétrico inverso e apresentam bom desempenho na redução de vibrações. Entretanto, apres

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9

Tran, Nicolas. "Influence de la condition limite acoustique amont sur les instabilités de combustion de grande amplitude : conception d’un système robuste de contrôle d’impédance." Thesis, Châtenay-Malabry, Ecole centrale de Paris, 2009. http://www.theses.fr/2009ECAP0013/document.

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Les contraintes économiques, environnementales et sociétales de ces vingt dernières années notamment dans les domaines de l’énergie et des transports ont débouché sur le développement de nouvelles technologies faisant intervenir la combustion pauvre et prémélangée. Ce mode de combustion à partir d'un mélange homogène conduit à des températures de flamme plus faibles qui permettent de réduire les émissions d'oxydes d'azote tout en limitant la production d'oxydes de carbone. Pour autant, la combustion pauvre prémélangée présente le désavantage d’être sensible à toute forme de couplage notamment

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10

PORRU, MARCELLA. "Quality regulation and energy saving through control and monitoring techniques for industrial multicomponent distillation columns." Doctoral thesis, Università degli Studi di Cagliari, 2015. http://hdl.handle.net/11584/266573.

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This Thesis deals with the problem of the quality control and monitoring and the related energy consuming aspects in industrial multicomponent distillation columns. These have important relevance especially in case of units subjected to important changes in operating conditions which manifests in fluctuation of the product concentration. Due to the low reliability of the seldom available and delayed analytic composition measurements, they cannot be employed for an efficient online monitoring of the separation. Instead, this Thesis proposes the use of composition observers with passive

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11

Vales, Luiz Fernando. "Análise numérica da influência de parâmetros estruturais no desempenho vibroacústico de placas flexíveis." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/18/18149/tde-22042018-155437/.

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Vibrações estruturais constituem uma das principais fontes de ruído e de desconforto em diversas aplicações, tais como nos produtos das indústrias automotiva, aeroespacial e naval, que, em grande parte, são compostos por estruturas flexíveis semelhantes a placas. Ao mesmo tempo, a demanda crescente por aumento de eficiência energética e por redução de emissão de gases nocivos ao meio ambiente tem levado os fabricantes de todos os segmentos para a utilização de materiais cada vez mais leves. Um desafio importante relacionado ao uso dessas soluções diz respeito ao seu comportamento vibroacústico

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12

Cervelin, José Eduardo. "Redução de vibrações mecânicas em processos de torneamento usando material piezelétrico." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18156/tde-16062014-135146/.

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Vibrações mecânicas oferecem grande limitação para a produtividade, qualidade ou mesmo viabilidade das operações de usinagem, especialmente quando se trata das autoexcitadas (chatter). Neste trabalho, foram desenvolvidas estratégias que tem como objetivo diminuir a intensidade de vibrações em processos de torneamento por meio do acoplamento de material piezelétrico ao suporte de ferramenta em conjunto com uso de shunts resistivo, indutivo e resistivo-indutivo em série ou em paralelo, criando assim estruturas eletromecânicas passivamente amortecidas. Para tanto, foram construídos modelos eletro

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13

Arellano, Diego Patricio Calero. "Avaliação numérica e experimental de soluções passiva e ativa para redução de chatter em processos de torneamento usando material piezelétrico." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18149/tde-30112017-143459/.

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O chatter é o principal problema de instabilidade nos processos de usinagem, e é causado pelas ondulações deixadas na superfície durante cortes sucessivos, ou chamado processo de regeneração, e é caracterizado pelo ruído e qualidade superficial ruim nas superfícies usinadas. Portanto, a comunidade científica tem se preocupado em desenvolver ações, tanto para a predição do fenômeno, como para desenvolver estratégias para sua redução. Neste trabalho avalia-se numérica e experimentalmente, a utilização de pastilhas piezelétricas acopladas no suporte da ferramenta, e aplicando estratégias de contr

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14

Iliuk, Itamar. "Análise de um sistema de captura de energia piezoelétrico não linear e não ideal utilizando-se uma estrutura aporticada." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3139/tde-26082016-144933/.

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A crescente utilização de novas tecnologias, as quais necessitam de uma fonte de energia menor e mais eficiente, como os microssensores para monitoramento de sistemas e estruturas nas chamadas cidades inteligentes, torna a captura da energia do ambiente uma opção viável para alimentação de tais dispositivos. Como a energia cinética é uma fonte de energia facilmente encontrada no ambiente, os sistemas que a capturam e convertem em eletricidade têm sido amplamente estudados, especialmente os que utilizam transdutores piezoelétricos. Considerando estruturas aporticadas, como prédios, pontes etc.,

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15

Adolfsson, Jesper. "Passive control of mechanical systems." Doctoral thesis, KTH, Mechanics, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3136.

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16

Mitchell, Morgan Adrienne. "Passive Noise Control in Incubators." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/51603.

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Incubators in the Neonatal Intensive Care Unit (NICU) are known to produce high Sound Pressure Levels (SPL) that can have detrimental effects on infants. Currently measured SPL in NICU's using traditional incubators are above the recommended 45 dB[A] threshold value [1]. Due to operating equipment and environmental noise, the sound level that is perceived by the developing newborn can cause both short and long term hearing loss as well as psychological damage [1].This thesis presents a study on how passive noise control devices can be used to reduce SPL levels in incubator NICU environments.

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17

Lacis, Ugis. "Nature-inspired passive flow control using various coatings and appendages." Licentiate thesis, KTH, Stabilitet, Transition, Kontroll, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-158319.

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There is a wide variety of tails, fins, scales, riblets and surface coatings, which are used by motile animals in nature. Since organisms currently living on earth have gone through millions of years of evolution, one can expect that their design is optimal for their tasks, including locomotion. However, the exterior of living animals has range of different functions, from camouflage to heat insulation; therefore it is a very challenging task to isolate mechanisms, which are beneficial to reduce the motion resistance of the body. There are two general categories of mechanisms existing in locom

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Heenan, Anthony Francis. "Passive control of back-step flow." Thesis, Imperial College London, 1997. http://hdl.handle.net/10044/1/8214.

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Maldonado-Mercado, Julio Cesar. "Passive and active control of structures." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36654.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1995.<br>Includes bibliographical references (leaves 94-98).<br>by Julio Cesar Maldonado-Mercado.<br>M.S.

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20

Zhao, Dan. "Tuned passive control of combustion instabilities." Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611839.

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21

Abbad, Ahmed. "Développement d'un traitement acoustique basses-fréquences à base de résonateurs d'Helmholtz intégrés à membrane électroactive." Thèse, Université de Sherbrooke, 2018. http://hdl.handle.net/11143/11906.

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L'utilisation des moyens de transport et des machines au quotidien a fortement contribué à l'amplification des phénomènes générant de la nuisance sonore. L'élimination des bruits en basses fréquences est actuellement la cible de différentes recherches. Plusieurs stratégies ont émergé comme l'utilisation des résonateurs de Helmholtz, de membranes vibrantes mais surtout des systèmes hybrides actif-passif. L'originalité de ce projet de doctorat consiste en la proposition d'une solution technologique d'un résonateur de Helmholtz adaptatif à volume variable, permettant ainsi de s'affranchir du car

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22

Macedo, Luiz Alberto. "Controle de Sistemas Passivos de Resfriamento de Emergência de Reatores Nucleares por Meio de Linhas de Desvio." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/85/85133/tde-29052003-092313/.

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Neste trabalho são apresentados resultados experimentais, de um circuito operando em circulação natural, que permitem analisar o comportamento de um sistema de resfriamento de emergência quando é aberta uma linha de desvio entre a fonte quente e a fonte fria. O trabalho tem ainda a importância de documentar os testes de caracterização hidráulica do circuito experimental, fornecendo inclusive os fatores de perda de pressão específicos para o circuito. Observou-se que, para uma mesma potência, quando é aberta a linha de desvio, a temperatura na saída da fonte quente aumenta substancialmente. Es

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Wang, Chuan-Han. "Actively-tuned passive control of combustion instabilities." Thesis, University of Cambridge, 2004. https://www.repository.cam.ac.uk/handle/1810/251917.

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MACHADO, FABIO JORGE DIAS. "ANALYSIS AND PASSIVE CONTROL OF RECTANGULAR PLATES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=11339@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>FUNDAÇÃO DE APOIO À PESQUISA DO ESTADO DO RIO DE JANEIRO<br>Neste trabalho é apresentado um método numérico de resolução para a equação diferencial de placas: o método de Galerkin Iterativo. O método é utilizado para obtenção das cargas críticas de flambagem e das freqüências naturais para placas retangulares com condições de contorno arbitrárias. São determinados ainda os modos de vibração de placas para div

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25

Bulathsinghala, Dinitha. "Afterbody vortex flows and passive flow control." Thesis, University of Bath, 2019. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.767593.

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Experiments have been carried out in a wind tunnel in order to study the aerodynamics ofafterbody vortex flows pertinent to cargo aircraft with upswept afterbodies. The overallaim of the study was to understand detailed vortex flow physics, to examine passive flowcontrol methods for drag reduction, and to examine the flowfield with the cargo rampdoor deployed. The simplified wind tunnel models were axisymmetric slanted base cylinderswhich have previously been utilised for afterbody vortex flow generation and weretested at ReD = 200; 000. Drag force, 2D Particle Image Velocimetry (PIV) and surf

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Maina, Edward Ikinya. "The development of passive flow control vortices." Thesis, University of Southampton, 2004. https://eprints.soton.ac.uk/47091/.

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Surface flow visualisation and Particle Image Velocimetry (PIV) were used to investigate the flow-field of sub-boundary layer vane vortex generators (VVGs) and steady jet vortex generators (SJVGs) in a separated flow at 20m/s. The vortex generators were mounted on a 2D bump which was situated on the floor of a 350mm by 250mm wind tunnel and had a separation zone on its trailing edge. Surface flow visualisation was used to select VVG spacings and SJVG velocity ratios for effective separation control and investigate surface flow. Instantaneous and mean parameters downstream of the VVG and SJVG w

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Laghi, Marco. "Passive based control on a kuka arm." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8435/.

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L'interazione in maniera sicura e compliante è una caratteristica sempre più richiesta per i sistemi robotici. La modellazione di sistemi eseguita tramite l'uso di sistemi port-Hamiltoninani permette di comprendere cosa avviene a livello energetico durante l'interazione e aiuta nella progettazinoe di un controllore tale che il comportamento del sistema controllato sia passivo e sicuro durante essa. Ciò sfocia nel cosiddetto Controllore Intrinsicamente Passivo (IPC). Dal momento che questo un controllo impone la rigidezza desiderata al sistema controllato, è possibile, tra le altre cose, replic

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Pennisi, Giuseppe. "Contrôle passif de vibrations à l’aide d’absorbeurs non-linéaires. Étude théorique et investigations expérimentales." Thesis, Toulouse, ISAE, 2016. http://www.theses.fr/2016ESAE0028/document.

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Les méthodes de contrôle de vibrations passives basées sur des absorbeurslinéaires ont été largement étudiées et ils ont aujourd'hui une vaste gammed'applications. Cependant, les absorbeurs linéaires n’étant efficaces quelorsqu'ils sont accordés à la fréquence que l'on veut contrôler, ils présententdes limites considérables quand ils sont appliqués à des systèmes possédantdes incertitudes sur les paramètres modaux ou ayant une fréquence propredépendante de la force extérieure. Dans cette thèse la réduction des vibrations dans les systèmes mécaniques à l'aide d'un absorbeur Nonlinear Energy Sin

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Swanson, Davin Karl. "Dynamic simulation of an improved passive haptic display." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/17292.

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Allani, Anissa. "Conception et optimisation d'amortisseurs à masse accordée pour les structures du génie civil." Thesis, Paris Est, 2015. http://www.theses.fr/2015PESC1137/document.

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Le travail de thèse s’appuie sur un recueil exhaustif des travaux effectués dans le domaine du contrôle des vibrations auxquels sont soumis les ouvrages génie civil. Une contribution innovante et originale est apportée et permet de classifier, de généraliser et d’optimiser certains critères dans le but d’assurer une conception optimale de divers dispositifs d’atténuation des vibrations, et ce, selon leur application. L’un des objectifs de la thèse a donc consisté à traiter ces critères de manière originale. Après avoir résolu le problème dit « direct » s’appuyant sur la modélisation des systèm

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Hedirian, Benjamin. "O teste em extensão do membro inferior ativo e passivo e sua influência na função neuromuscular." Bachelor's thesis, [s.n.], 2017. http://hdl.handle.net/10284/5883.

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Projeto de Graduação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Licenciado em Fisioterapia<br>Introdução: a flexibilidade e a amplitude articular são muito importantes para a produção de força, podendo ser avaliadas de forma ativa ou passiva. O teste de elevação do membro inferior em extensão (TEMI) permite comparar a influência de elementos ativos e passivos nos padrões de movimento que poderão influenciar, não só a flexibilidade articular, como a produção de força. Objetivo: verificar as diferenças entre o TEMI ativo e passivo e de que forma

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Feuvrier, Audrey. "Contrôle bio-inspiré d’un sillage turbulent par stratégie passive ou auto-adaptative." Thesis, Orléans, 2015. http://www.theses.fr/2015ORLE2059/document.

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Les décollements autour d’un corps en mouvement sont à l’origine de détériorations des performances aérodynamiques, de fatigues structurelles ou de nuisances sonores. La compréhension de ces phénomènes reste encore aujourd’hui l’un des enjeux majeurs de la recherche en aérodynamique. Le développement de systèmes permettant de contrôler l’écoulement et d’altérer ou de réduire les décollements apparaît comme une solution prometteuse en vue d’améliorer les performances aérodynamiques. On distingue les systèmes de contrôles passifs, simples d’utilisation mais incapables de s’adapter aux modificati

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Namyst, Romain. "Contrôle optimal stochastique et application à la trajectographie passive." Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0316.

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L’objectif de cette thèse est d’étudier des problèmes de contrôle optimal dans un cadre partiellement observé en temps discret. On s’intéresse plus particulièrement au problème de commande optimal stochastique pour l’estimation de la position d’une cible sous-marine à partir de mesures bruitées venant d’un capteur que possède un observateur sous-marin. On se propose d’utiliser le formalisme des Processus de Décision Markoviens (PDMs) qui constituent une famille de processus contrôlés particulièrement bien adaptés pour la modélisation de problèmes d’optimisation stochastique séquentiel. D’un po

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Black, Benjamin Andrew. "Controlling a Passive Haptic Master During Bilateral Teleoperation." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19716.

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Haptic devices allow a human to interact physically with a remote or virtual environment by providing tactile feedback to the user. In general haptic devices can be classified in two groups according to the energetic nature of their actuators. Devices using electric motors, pneumatic or hydraulic cylinders or other similar actuators that can add energy to the system are considered "active." Devices using brakes, clutches or other passive actuators are considered "passive" haptic devices. The research presented here focuses on the use of passive haptic devices used during teleoperation, the rem

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Godoy, Willians Roberto Alves de. "Projeto, análise e otimização de um absorvedor dinâmico de vibrações não linear." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/18/18149/tde-06112017-140840/.

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Absorvedores de vibração são comumente usados em aplicações com intuito de reduzir indesejadas amplitudes de vibração de estruturas e maquinas vibrantes. O conceito de um absorvedor de vibração linear consiste na ideia de projetar um subsistema com frequência de ressonância coincidente com uma dada frequência de interesse, tal que a amplitude de vibração do sistema primário e significativamente reduzida quando comparada a situação original, sem o absorvedor de vibração. Porem, uma deficiência dos absorvedores de vibração lineares típicos e sua estreita faixa de frequência de operação. Para sup

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Veecock, Candace. "Agentivité, modalités de contrôle et subjectivité." Thesis, Bordeaux 3, 2012. http://www.theses.fr/2012BOR30080/document.

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En français, la construction se faire + infinitif montre une agentivité non prototypique (questionnement sur l’interprétation du rôle participatif qu’il convient d’attribuer au sujet animé : « Paul s’est fait donner un livre par Marie » suppose un contrôle de Marie sur le don et un contrôle partiel de Paul sur le déclenchement du don). Dans certaines tournures, ce contrôle sera diminué voire annulé (« Paul s’est fait voler sa voiture »). On étudiera aussi des périphrases verbales (se laisser+infinitif, se voir+infinitif, faire+infinitif) et des opérateurs causatifs en anglais (get, have). Get

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Gao, Dalong. "Control limitation analysis for dissipative passive haptic interfaces." Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-11112005-114601/.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2006.<br>Arkin, Ronald, Committee Member ; DeWeerth, Steve, Committee Member ; Vito, Raymond, Committee Member ; Ebert-Uphoff, Imme, Committee Member ; Book, Wayne, Committee Chair. Includes bibliographical references.

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Davis, Hurley Thomas Jr. "An investigation of passive actuation for trajectory control." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/17843.

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39

Bishay-Girges, Nagui William. "Seismic protection of structures using passive control system." Thesis, University of Canterbury. Civil Engineering, 2004. http://hdl.handle.net/10092/7509.

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There is a relationship between inelastic deformation and energy dissipation in structures that are subjected to earthquake ground motions. Thus, if seismic energy dissipation can be achieved by means of a separate non-load bearing supplementary damping system, the load bearing structure can remain elastic with continuing serviceability following the design level earthquake. This research was carried out to investigate the advantages of using added damping in structures. The control system consists of passive friction dampers called ring spring dampers installed in the ground floor of the str

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Raphael, Jonathan S. T. "Passive control of bipedal robots via tail morphology." Thesis, Boston University, 2012. https://hdl.handle.net/2144/21243.

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Thesis (M.Sc.Eng.) PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you.<br>Legged robots offer significant advantages over their wheeled and treaded counterparts, enabling access to huge sectors of otherwise non-navigable terrain. To develop these walkers many engineers have looked to nature for insp

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Playter, Robert R. (Robert Randall). "Passive dynamics in the control of gymnastic maneuvers." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/11678.

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Mohammadi, Saber. "Semi-passive vibration control using shunted piezoelectric materials." Lyon, INSA, 2008. http://theses.insa-lyon.fr/publication/2008ISAL0043/these.pdf.

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The work of this thesis concerns to study of a particular technique related to the treatment of generated voltage by the piezoelectric elements. This nonlinear technique increases the effect of electromechanical conversion of piezoelectric materials considerably. This technique called Synchronized Switching Damping (SSD) has been developed in laboratory of electrical engineering and ferroelectricity of INSA-Lyon. The advantage of these techniques is that can be self-powered by using the converted electrical energy by piezoelectric elements. The presented work propose a new approach of control

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Goldstein, Andre L. "Control of Sound Transmission with Active-Passive Tiles." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/27913.

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Nowadays, numerous applications of active sound transmission control require lightweight partitions with high transmission loss over a broad frequency range and simple control strategies. In this work an active-passive sound transmission control approach is investigated that potentially addresses these requirements. The approach involves the use of lightweight stiff panels, or tiles, attached to a radiating base structure through active-passive soft mounts and covering the structure surface. The resulting double-partition configuration was shown to have good high frequency passive isolation, b

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Huang, Caijin. "Optical nano-antennas : passive properties and active control." Thesis, Dijon, 2010. http://www.theses.fr/2010DIJOS011/document.

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Les nano-antennes optiques sont de nouveaux éléments, généralement métalliques, permettant d’améliorer les interactions électromagnétiques entre le rayonnement lumineux et un objet sub-longueur d’onde. Ces dispositifs innovants, fonctionnant dans une gamme de longueur d’onde correspondant au spectre visible et proche infrarouge, répondent à certaines contraintes inhérentes à l’optique lorsque les échelles d’interactions relèvent du nanomètre. En particulier, les propriétés des antennes optiques métalliques sont régies par l’apparition de résonances plasmons qui permettent, d’une part de confin

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Mohammadi, Saber Guyomar Daniel. "Semi-passive vibration control using shunted piezoelectric materials." Villeurbanne : Doc'INSA, 2009. http://docinsa.insa-lyon.fr/these/pont.php?id=mohammadi.

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Thèse doctorat : Génie Electrique.Energie et Système : Villeurbanne, INSA : 2008.<br>Thèse rédigée en anglais. Résumé étendu en français. Titre provenant de l'écran-titre. Bibliogr. p. [142]-151.

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Gomes, Mario Waldorff. "An examination of control algorithms for a dissipative passive haptic interface." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/16808.

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Mimeau, Chloé. "Conception and implementation of a hybrid vortex penalization method for solid-fluid-porous media : application to the passive control of incompressible flows." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GRENM018/document.

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Dans cette thèse nous mettons en oeuvre une méthode vortex hybride pénalisée (HVP) afin desimuler des écoulements incompressibles autour de corps non profilés dans des milieux complexessolides-fluides-poreux. Avec cette approche particulaire hybride, le phénomène de convection estmodélisé à l’aide d’une méthode vortex afin de bénéficier du caractère peu diffusif et naturel desméthodes particulaires. Un remaillage des particules est alors réalisé systématiquement sur unegrille cartésienne sous-jacente afin d’éviter les phénomènes de distorsion. D’autre part, les effetsdiffusifs et d’étirement a

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Stillfried, Florian von. "Computational studies of passive vortex generators for flow control." Stockholm : Skolan för teknikvetenskap, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11737.

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Parsons, Erin M. "Control system design for a continuous passive motion machine." Connect to resource, 2010. http://hdl.handle.net/1811/45477.

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von, Stillfried Florian. "Computational studies of passive vortex generators for flow control." Licentiate thesis, KTH, Mechanics, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11737.

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<p>Many flow cases in fluid dynamics face undesirable flow separation due torising static pressure on wall boundaries. This occurs e.g. due to geometry as ina highly curved turbine inlet duct or e.g. on flow control surfaces such as wingtrailing edge flaps within a certain angle of attack range. Here, flow controldevices are often used in order to enhance the flow and delay or even totallyeliminate flow separation. Flow control can e.g. be achieved by using passiveor active vortex generators (VG) that enable momentum mixing in such flows.This thesis focusses on passive VGs, represented by VG v

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