Dissertations / Theses on the topic 'Forced proximity'
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Rodriguez, Richard Yi. "Characterization of sway forces induced by close proximity ship towing." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02Mar%5FRodriguez.pdf.
Full textTamefuji, Rieko. "The impact of child care proximity on labor force participation of parents." CONNECT TO ELECTRONIC THESIS, 2008. http://hdl.handle.net/1961/6990.
Full textHartmann, Michael [Verfasser], and Gert-Ludwig [Akademischer Betreuer] Ingold. "Casimir effect in the plane-sphere geometry: Beyond the proximity force approximation / Michael Hartmann ; Betreuer: Gert-Ludwig Ingold." Augsburg : Universität Augsburg, 2018. http://d-nb.info/1179089952/34.
Full textTruscott, Anthony D. "Low temperature scanning tunneling spectroscopy of proximity effect junctions formed on the layered superconductors NbSe₂ and Bi₂Sr₂Ca₁Cu₂O₈ /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC IP addresses, 1999. http://wwwlib.umi.com/cr/ucsd/fullcit?p9930908.
Full textLe, Sueur Hélène. "Développement d’un AFM-STM pour la spectroscopie électronique haute résolution de nanocircuits : application à l’effet de proximité supraconducteur." Paris 6, 2007. http://www.theses.fr/2007PA066236.
Full textPetit, Antoine. "Robust visual detection and tracking of complex objects : applications to space autonomous rendez-vous and proximity operations." Phd thesis, Université Rennes 1, 2013. http://tel.archives-ouvertes.fr/tel-00931604.
Full textDemir, Serhat. "Diffusion of Police Technology across Time and Space and the Impact of Technology Use on Police Effectiveness and Its Contribution to Decision-Making." Kent State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=kent1238602124.
Full textGenet, Cyriaque. "La force de Casimir entre deux miroirs métalliques à température non nulle." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2002. http://tel.archives-ouvertes.fr/tel-00001749.
Full textRazafindramanana, Octavio. "Low-dimensional data analysis and clustering by means of Delaunay triangulation." Thesis, Tours, 2014. http://www.theses.fr/2014TOUR4033/document.
Full textThis thesis aims at proposing and discussing several solutions to the problem of low-dimensional point cloudanalysis and clustering. These solutions are based on the analysis of the Delaunay triangulation.Two types of approaches are presented and discussed. The first one follows a classical three steps approach:1) the construction of a proximity graph that embeds topological information, 2) the construction of statisticalinformation out of this graph and 3) the removal of pointless elements regarding this information. The impactof different simplicial complex-based measures, i.e. not only based on a graph, is discussed. Evaluation is madeas regards point cloud clustering quality along with handwritten character recognition rates. The second type ofapproaches consists of one-step approaches that derive clustering along with the construction of the triangulation
Cunha, João Miguel Neto. "O uso das ferramentas de comunicação digital na promoção de uma política de proximidade nas Forças de Segurança Portuguesas - Estudo comparativo entre PSP e GNR." Master's thesis, Instituto Superior de Ciências Sociais e Políticas, 2020. http://hdl.handle.net/10400.5/21501.
Full textA evolução da tecnologia lançou novos desafios à comunicação entre as pessoas, o que obrigou as organizações a responderem de igual forma. Os novos canais e espaços onde a comunicação se desenrola, como é o caso dos social media e de outras plataformas digitais, permitem às organizações, através das relações públicas, encetar novas interacções com os seus públicos. As relações entre ambos passam a ser interactivas e participativas e não unidireccionais, como acontece com as mensagens veiculadas nos media tradicionais. As Forças de Segurança, para atingirem os seus objectivos, necessitam de ter uma presença junto da comunidade para a qual recorrem ao policiamento de proximidade. Este, enquanto base de actuação das Forças de Segurança portuguesas, deve adaptar-se à evolução da forma de comunicar, usufruindo das plataformas digitais, que permitem um contacto permanente e eficaz com os seguidores. Partindo deste princípio, pretende-se compreender como podem as ferramentas de comunicação digital contribuir para a promoção de uma política de proximidade nas Forças de Segurança Portuguesas, nomeadamente da PSP e da GNR. Para isso, contou-se com a análise teórica sobre as relações públicas online integradas na estratégia de comunicação das organizações e as mais-valias dos social media para o policiamento de proximidade. Adicionalmente, realizaram-se entrevistas aos responsáveis pelos departamentos de comunicação de cada uma das instituições e foi ainda analisado o conteúdo das suas páginas de Instagram e Facebook, para identificar diferenças e semelhanças entre ambas na linha editorial de conteúdos, assim como as reacções dos seguidores. Desta análise, foi possível concluir sobre o contributo positivo da utilização destas ferramentas na proximidade com os cidadãos, nomeadamente no aumento do número de contactos proactivos com as Forças de Segurança. Estas ferramentas contribuem ainda para aumentar a exposição a conteúdos de prevenção e sensibilização, bem como para diminuir as limitações no contacto dos cidadãos.
The evolution of technology has launched new challenges to communication between people, which has forced organizations to respond in the same way. The new channels and spaces where communication takes place, such as social media and other digital platforms, allow organisations, through public relations, to initiate new interactions with their audiences. The relations between them become interactive and participative and not unidirectional, as happens with the messages conveyed in traditional media. In order to achieve their objectives, the Security Forces need to have a presence in the community for which they resort to proximity policing. This, as a base of action of the Portuguese Security Forces, must adapt to the evolution of the way of communicating, taking advantage of digital platforms, which allow a permanent and effective contact with the followers. Based on this principle, it is entended to understand how digital communication tools can contribute to the promotion of a proximity policy in the Portuguese Security Forces, namely PSP and GNR. To this end, we relied on the theoretical analysis of online public relations integrated into the communication strategy of organisations and the added value of social media for proximity policing. In addition, interviews were conducted with those responsible for the communication departments of each of the institutions and the content of their Instagram and Facebook pages was also analysed to identify differences and similarities between them in the editorial content line, as well as the reactions of the followers. From this analysis, it was possible to conclude on the positive contribution of the use of these tools in proximity with the citizens, namely in the increase of the number of proactive contacts with the Security Forces. These tools also contribute to increasing exposure to prevention and awareness-raising content, as well as to reducing the limitations on citizen contact.
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Amine, Ramdani Ahmed, and Sebastian Rudnik. "Design and Construction of High Current Winding for a Transverse Flux Linear Generator Intended for Wave Power Generation." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-240366.
Full textEfterfrågan på el från förnybara källor är hög och inget tyder på att det kommer ändras den närmsta tiden. En källa till förnybar el som än idag står relativt orörd är den där man använder energin från havsvå- gor. Det är denna förnybara källa Anders Hagnestål haft i åtanke när han nu bygger en unikt effektiv generator med syftet att i ett senare skede utvinna el med hjälp av flytande punktabsorberande vågkraft- system. Generatorn är av den linjära typen och omvandlar det punk- tabsorberande systemet rörelse till el. För att testa denna generator- modell så påbörjades bygget av två fullskaliga prototyper 2017. Denna uppsats behandlar specifikt arbetet med generatorlindningen till pro- totyperna och innefattar processen från design till själva byggnatio- nen. Lindingen består av flertalet mindre och isolerade lindningsleda- re med uppgift att bland annat minska skinneffekt och virvelströms- förluster. När man använder denna metod så uppkommer dock ett nytt problem vilket härstammar från att lindningsledarna är samman- kopplade i vardera ända och bildar på så sätt n slutna strömkretsar. Konsekvensen kan vara stora förluster från cirkulerande strömmar på grund av det magnetiska ströflöde som finns runt järnkärnan som lindningen omsluter. Utgångspunkten för att minimera dessa cirkule- rande strömmar är att transponera alla lindningsledare på ett sätt så att den resulterande elektromotoriska spänningen för varje strömkrets blir så liten som möjligt. Med hjälp av förenklade modeller samt FEM simuleringar så bestämdes ett lämpligt sätt att transponera lindningstrådarna utifrån oli- ka kriterier. Lösningen blev att lindningstrådarna endast transponera- des en gång med en så kallad 180 grader transponering. Detta ger en tillräckligt god minimering av de cirkulerande ström- marna, men den stora fördelen med denna lösning är att det är möjligt att linda maskinen med de små resurser projektet hade tillgång till, dock var detta till en stor nackdel då väldigt mycket tid gick till att hitta egna tillvägagångsätt för att utföra byggandet av lindningen på ibland okonventionella sätt.
Siry, Pierre. "Développement d'un dispositif d'acoustique picoseconde en microscopie optique de champ proche pour l'étude des propriétés élastiques de nano-objets." Paris 6, 2002. http://www.theses.fr/2002PA066339.
Full textLe, Sueur Hélène. "Un AFM-STM cryogénique pour la physique mésoscopique." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2007. http://tel.archives-ouvertes.fr/tel-00261434.
Full textAu cours de cette thèse, nous avons développé un microscope permettant d'effectuer la spectroscopie tunnel résolue spatialement (10 nm) de nanocircuits individuels, avec une résolution en énergie inégalée (10 µeV). Cet appareil combine les fonctions de Microscopie par Force Atomique (mode AFM) et de spectroscopie Tunnel locale (mode STM), et fonctionne à 30 mK. Dans le mode AFM, la topographie de l'échantillon est imagée grâce à un diapason en quartz piézoélectrique, ce qui permet de repérer les circuits. La spectroscopie tunnel peut ensuite être faite sur les zones conductrices.
Avec ce microscope, nous avons mesuré la DoS locale dans une structure hybride Supraconducteur-métal Normal-Supraconducteur (S-N-S). Dans un tel circuit, les propriétés électroniques de N et de S sont modifiées par l'effet de proximité supraconducteur. Notamment, pour des fils N courts, nous avons pu observer -comme prédit- la présence d'un gap dans sa DoS, indépendant de la position dans la structure : le “minigap”. De plus, en modulant la phase supraconductrice entre les deux S, nous avons mesuré la modification de ce gap, et sa disparition lorsque la différence de phase vaut π.
Nos résultats expérimentaux pour la DoS, ainsi que ses dépendances en phase, en position, et en longueur de N sont en accord quantitatif avec les prédictions de la théorie quasiclassique de la supraconductivité. Certaines de ces prédictions sont observées pour la première fois.
Fonseca, Diogo Miguel Pereia da. "Force/Proximity Hybrid Sensors and Phase Change Actuators." Master's thesis, 2021. http://hdl.handle.net/10316/96046.
Full textA perceção eficaz do ambiente envolvente, assim como a criação de mecan ismos compatíveis são dois objetivos importantes para permitir uma in teração homem-robô (Human-Robot Interaction – HRI) segura e intu itiva. Este trabalho encontra-se dividido em duas partes. Na primeira parte apresentamos um sensor híbrido de força e proximidade, mecanica mente flexível, baseado nos fenómenos de piezoresistividade e capacitân cia. Constituído por materiais e componentes de baixo custo, amplamente disponíveis no mercado, o sensor proposto pode ser fabricado e implemen tado de forma econômica a grande escala, melhorando a perceção senso rial de qualquer instalação robótica. Um sistema de aquisição de dados (Data Acquisition System – DAQ) também foi apresentado, permitindo uma interface conveniente com sensor, por meio de uma conexão série USB (Universal Serial Bus). Resultados demonstraram uma resposta rápida e moderadamente precisa a forças entre 0,5 N e 15 N. A deteção de presença humana foi alcançada a distâncias de até 100 mm, embora com uma resolução espacial relativamente reduzida (~ 50 mm). Na segunda parte deste trabalho apresentamos um atuador flexível baseado no processo de mudança de fase (Phase Change Artificial Muscle – PCAM). Com base em músculos artificiais pneumáticos tradicionais McKibben (Pneumatic Artificial Muscles – PAMs), o atuador proposto explora a ex pansão volumétrica da água em transição de fase líquido-vapor alimen tada por uma fonte de alimentação DC (Direct Current) de baixa tensão. Forças de atuação de 27,5 N foram repetidamente alcançadas com atu adores cuja massa é de apenas 23 g. Alta precisão no controlo de pressão foi alcançada, com o sistema a apresentar-se capaz de seguir comandos de pressão com erros de + - 1 kPa. Vários fenômenos importantes foram explorados e discutidos, incluindo limites para taxas de pressurização, segurança de fluidos e limitações de controlo, estabelecendo uma base sólida para futuro desenvolvimento e implementação.
Insightful perception of the surrounding environment, as well as compliant mechanisms are two important goals to enable safe and intuitive Human-Robot Interaction (HRI). This work is divided into two parts. In Part 1, a mechanically flexible, piezoresistive and self-capacitive hybrid force and proximity sensor is presented. Made of low cost and highly available components, the proposed sensor can be economically made and deployed in large numbers, improving the sensory awareness of any robotic system. A Data Acquisition System (DAQ) was also presented, allowing users to conveniently interface the sensor through a regular Universal Serial Bus (USB) connection. Results show a fast and moderately precise response to forces ranging between 0.5 N and 15 N. Human presence detection was achieved at distances up to 100 mm, but with fairly low spatial resolution (~50 mm). In Part 2 of this work, a compliant Phase Change Artificial Muscle (PCAM) is presented. Based on traditional pneumatic McKibben Pneumatic Artificial Muscles (PAMs), the proposed actuator explores the volumetric expansion of water undergoing liquid-gas phase transition, powered by a low voltage DC power source. Actuation forces of 27.5 N were routinely achieved with actuators weighing just 23 g. High-pressure control precision was achieved, with the system following set pressure commands within +- 1 kPa. Several important phenomena were explored and discussed including limits to pressurization rates, fluid safety and control limitations, laying the foundation for future development and deployment.
Jayasekara, Nandaka. "Development of analytical solutions for quasistationary electromagnetic fields for conducting spheroids in the proximity of current-carrying turns." 2013. http://hdl.handle.net/1993/14402.
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