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Dissertations / Theses on the topic 'Air pistol'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Hamzah, Noor Hazfalinda. "Development of an objective method for the comparison of fired projectiles using an air pistol as a template." Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28488.

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The ability to objectify ballistic evidence is a challenge faced by firearms examiners around the world. A number of researchers are trying to improve bullet-identification systems to address the deficiencies in this regard and which were detailed within the National Academy of Sciences report (2009). Bullet to bullet comparisons have largely relied on the supposition that the rifling marks within the barrel of a weapon have class characteristics that identify a weapon type and individual characteristics that identify a specific weapon. Such characteristics are impressed onto projectiles when

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2

Willcock, M. "The effect of piston design on hydrocarbon emissions in a spark ignited engine." Thesis, Sheffield Hallam University, 1993. http://shura.shu.ac.uk/20539/.

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This thesis describes an investigation into the effect of piston design on hydrocarbon emissions from an spark ignited engine. The experimental investigation tested a series of three piston configurations against a standard design based on production dimensions. These tests examined the effect of top and 2nd land crevice volumes and absorption and desorption from lubricant on the cylinder liner as sources of hydrocarbon emissions. The operational conditions were steady state for all engine parameters. The work was performed on a modern four cylinder 16 valve engine with multi point fuel inject

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3

Wang, Yuan S. M. Massachusetts Institute of Technology. "Air flow effects in the piston ring pack and their implications on oil transport." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/76826.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2012.<br>This thesis was scanned as part of an electronic thesis pilot project.<br>Cataloged from PDF version of thesis. This thesis was scanned as part of an electronic thesis pilot project.<br>Includes bibliographical references (p. 85).<br>3 different flow regimes of piston blowby air and their influences on oil transport are studied. It is found that air mainly interacts with oil close to the ring gaps and directly below the ring-liner contacts. Geometric features at the gaps to smoothen airflow an

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Hedrich, Philipp, Maik Johe, and Peter F. Pelz. "Design and Realization of an Adjustable Fluid Powered Piston for an Active Air Spring." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-199924.

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In this paper, we present a new compact hydraulic linear actuator. The concept is developed to change the rolling piston diameter of an active air spring during usage. By doing so, the air spring can actively apply pressure and tension forces. The actuator is designed for small movements at high forces. It is insensitive to side forces, which are introduced by the bellows rolling on the rolling piston of the air spring. A diaphragm sealing is used to minimize friction. Hence a precise adjustment of small displacements at high dynamics is possible and the system is completely leakage-free. We d

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Fonseca, Aline Alves. "Pistas prosódicas e o processamento de sentenças ambíguas do tipo "SN1-V-SN2-Atributo" do Português Brasileiro." Universidade Federal de Minas Gerais, 2008. http://hdl.handle.net/1843/AIRR-7DGNEQ.

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This dissertation arose from questions about the ambiguity in syntactic constructions like NP1-V-NP2-attribute as in The boy hugged the friend sweating (O rapaz abraçou o amigo suado), which can happen in Brazilian Portuguese. When this ambiguity occurs it refers to the syntactically ambiguous attachment of attribute, which can be locally attached to NP2 or non-locally to NP1. Two principles lead the parser in the sentence processing: Late Closure and Minimal Attachment. The Late Closure principle is applied to the above-mentioned construction in which the local attachment is considered defaul

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Nadeem, Tariq. "Computer simulation of the steady-state thermodynamic processes and piston ring wear for a multi-stage intercooled reciprocating air compressor." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/43257.

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The objectives of this research are the prediction of the thermodynamic behavior of a multi-stage intercooled reciprocating compressor and its progressive loss of performance due to leakage. A theoretical model is developed to simulate the thermodynamics of the compressor system and the lubricating condition and wear of the piston ring pack for a multi-stage intercooled reciprocating compressor. A first law of thermodynamics approach is used to determine the thermodynamic properties of the gas inside the cylinders, the intercoolers and the inlet and discharge manifold. The compressor valves ar

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Moreira, Rafael da Silveira [UNESP]. "Comparação da viabilidade técnica-econômica em condicionamento de ar: compressor a pistão versus compressor rotativo de velocidade variável." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/99341.

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Made available in DSpace on 2014-06-11T19:30:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-07-07Bitstream added on 2014-06-13T20:39:48Z : No. of bitstreams: 1 moreira_rs_me_guara.pdf: 1015481 bytes, checksum: 6083704ea441f414182fe9b27a70777b (MD5)<br>Eletrobras<br>Neste estudo são apresentados os resultados de um trabalho realizado em uma bancada de testes, onde se constatou a diferença de potência elétrica de acionamento e do coeficiente de performance no funcionamento de dois diferentes tipos de compressores: um hermético a pistão e outro rotativo do tipo scroll, operando com i

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Moreira, Rafael da Silveira. "Comparação da viabilidade técnica-econômica em condicionamento de ar: compressor a pistão versus compressor rotativo de velocidade variável /." Guaratinguetá : [s.n.], 2009. http://hdl.handle.net/11449/99341.

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Resumo: Neste estudo são apresentados os resultados de um trabalho realizado em uma bancada de testes, onde se constatou a diferença de potência elétrica de acionamento e do coeficiente de performance no funcionamento de dois diferentes tipos de compressores: um hermético a pistão e outro rotativo do tipo scroll, operando com inversor de frequência. No estudo variou-se a vazão do fluido refrigerante, e consequentemente o efeito frigorífico, por dois procedimentos distintos: restrição da passagem do refrigerante através de uma válvula de estrangulamento, mantendo-se a rotação do compressor a pi

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Ndame, Ngangue Max Keller. "Etude théorique, conception, réalisation et essai préliminaire d'un moteur à air chaud à pistons liquides." Thesis, Pau, 2019. http://www.theses.fr/2019PAUU3004/document.

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Un moteur Ericsson est un moteur alternatif à apport de chaleur externe fonctionnant selon un cyclethermodynamique de Joule. Ce type de moteur est particulièrement intéressant pour la valorisationde certaines "sources chaudes" (l'énergie solaire, la biomasse, les effluents gazeux chauds...).Dans cette thèse, une configuration innovante de moteur est proposée. Celle-ci permet d'une part,de s’affranchir du problème d’étanchéité autour des pistons des moteurs Ericsson, par l'usage despistons liquides en lieu et place des pistons mécaniques et d'autre part, de simplifier le système dedistribution

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Dib, Ghady. "Thermodynamic simulation of compressed air energy storage systems." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI092.

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Le développement des énergies renouvelables pose la question du stockage de l’énergie électrique. L’utilisation du stockage par air comprimé semble une solution prometteuse dans le domaine du stockage d'énergie : elle se caractérise par une grande fiabilité, un faible impact environnemental et une remarquable densité énergétique stockée (kWh/m3). Jusqu’à présent, l'air comprimé a été utilisé dans de nombreux domaines comme vecteur d’énergie pour stocker différentes formes d'énergies (transport routier, poste pneumatique, plongée sous-marine). Néanmoins, actuellement de nombreux chercheurs se c

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Hooper, Peter. "An experimental and analytical investigation into the heavy fuel operation of a stepped piston engine for unmanned air vehicle application." Thesis, Staffordshire University, 2012. http://eprints.staffs.ac.uk/225/.

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Luciani, Emanuele. "Studio microstrutturale e tribologico di componenti per motori idraulici a pistoni radiali a colonna di fluido." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/4299/.

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Lo studio condotto ha lo scopo di aumentare la vita in esercizio di motori idraulici a pistoni radiali a colonna di fluido, studiandone e migliorandone il comportamento tribologico. Questa tipologia di motori è adatta per generare alte coppie a basse velocità e si impiega in sistemi di movimentazione lenta per carichi pesanti. Il contatto in condizioni di strisciamento fra cilindri telescopici ed albero eccentrico rotante, può portare all’usura dei componenti coinvolti e quindi al trafilamento dell’olio che circola nel motore, causando cali di efficienza. Lo studio ha previsto un’indagine de

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Marè, Renata Maria. "Estudo de eficiência da ventilação em sistema de climatização com distribuição de ar pelo piso." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/3/3146/tde-18082010-170422/.

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A aplicação de sistemas de climatização com distribuição de ar pelo piso tem aumentado em países desenvolvidos, o que também tem ocorrido no Brasil. Em paralelo, tem crescido o interesse pela qualidade do ar interior e os seus efeitos no bem estar, saúde e produtividade dos ocupantes de uma edificação. Diversos estudos têm apontado para as vantagens deste sistema em relação à remoção de contaminantes do ambiente interior. Este sistema tem figurado nos programas de certificação ambiental de edificações como uma alternativa vantajosa para a melhoria da qualidade do ar interior e o conforto térmi

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Bou, leba bassil Marianne. "Étude des mécanismes aérodynamiques à l'origine du bruit de contact pneumatique/chaussée." Thesis, Ecole centrale de Nantes, 2020. http://www.theses.fr/2020ECDN0019.

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Cette thèse traite des mécanismes de pompage d'air à l'origine du bruit de roulement dans le cas d'un pneumatique lisse roulant sur une cavité cylindrique intégrée à la chaussée. Un modèle CFD est utilisé pour calculer la variation de la pression d'air dynamique au fond de la cavité dont le volume varie durant le contact avec le pneu. Une méthode de piston a été validée pour modéliser cette variation de volume par un déplacement vertical du fond de la cavité, équivalent à la variation de son volume causée par la pénétration de la bande de roulement durant le contact. La variation de volume uti

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Koc, Gencer. "Utilization Of Neural Networks For Simulation Of Vehicle Induced Flow In Tunnel Systems." Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614975/index.pdf.

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Air velocities induced by underground vehicles in complex metro systems are obtained using artificial neural networks. Complex tunnel shaft-systems with any number of tunnels and shafts and with most of the practically possible geometries encountered in underground structures can be simulated with the proposed method. A single neural network, of type feed-forward back propagation, with a single hidden layer is trained for modelling a single tunnel segment. Train and tunnel parameters that have influence on the vehicle induced flow characteristics are used together to obtain non-dimensional inp

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16

Khan, Muhammad. "RANS and LES of multi-hole sprays for the mixture formation in piston engines." Phd thesis, Ecole Centrale de Lyon, 2014. http://tel.archives-ouvertes.fr/tel-01002111.

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Cette thèse porte sur la simulation des jets de gouttes générés par des pulvérisateurs essence haute pression, pulvérisateurs qui sont un point clef des systèmes de combustion automobile de la présente et future génération devant diminuer les émissions de CO2 et de polluants. Dans un premier temps les jets de gouttes (" sprays ") sont simulés par simulation moyennée. Les résultats de simulation d'un jet donnant des résultats en moyenne satisfaisant, l'interaction de jets en injecteurs multi-trous est alors simulée. Les résultats sont cohérents par rapport aux mesures d'entraînement d'air. La s

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Auris, Casma Omar Tadeo. "Diseño de un sistema de climatización para un domo de 50m2 de uso familiar en la ciudad de Pisco." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2017. http://tesis.pucp.edu.pe/repositorio/handle/123456789/9560.

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En la presente tesis se diseña un sistema de climatización que proporcione condiciones de confort en época de verano e invierno para un domo geodésico de uso familiar. Este domo será diseñado solo para ser instalado en la ciudad de Pisco, ya que para la determinación de la radiación incidente se consideró la latitud y longitud del lugar mencionado. Por un lado, para la carga térmica de refrigeración, se considera al domo como un conjunto de placas de 1 m x 0.85 m dispuestas en 8 niveles para así estimar la irradiación total incidente sobre cada placa y consecuentemente sobre el domo. A

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Matsuyama, Rafael Tsuji. "Avaliação de risco em operações de pouso de aeronaves em pistas paralelas utilizando procedimentos e técnicas CSPA." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-26082011-142622/.

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Historicamente, os sistemas de tráfego aéreo incorporaram níveis de automação nas atividades de controle do espaço aéreo com o intuito de atender à crescente demanda por serviços aéreos e de melhorar os níveis de segurança nos procedimentos de voo. Com o crescimento expressivo previsto para os próximos anos, devido ao aumento nos números de voos e de usuários, as opções tradicionais de expansão da malha aérea e / ou construção de novos aeroportos se tornaram onerosas economicamente, tornando necessária a adoção de alternativas, tais como as técnicas / procedimentos para pousos em pistas parale

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Leite, Brenda Chaves Coelho. "Sistema de ar condicionado com insuflamento pelo piso em ambientes de escritórios: avaliação do conforto térmico e condições de operação." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/3/3132/tde-10032004-182635/.

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Desde a introdução do conceito de escritório aberto, o tipo de ocupação e a distribuição das cargas internas têm sofrido grandes mudanças, requerendo maior flexibilidade nos edifícios. Além disto, avaliações de desempenho de edifícios de escritórios da atualidade têm apresentado resultados que são fortes indicadores da necessidade de mudanças de conceitos de projeto, operação e uso de sistemas de condicionamento de ar, devido ao elevado nível de insatisfação dos usuários quanto ao conforto e à qualidade do ar. Para tentar solucionar estes problemas, outro conceito em distribuição de ar, já em

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Neu, Thibault. "Etude expérimentale et modélisation de la compression quasi isotherme d’air pour le stockage d’énergie en mer." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2017. http://www.theses.fr/2017IMTA0021/document.

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Le stockage d’énergie par air comprimé est une des technologies nécessaires à l’emploi massif des énergies renouvelables intermittentes, d’origine solaire ou éolienne. La compression d’air par piston liquide permet d’augmenter l’efficacité du stockage d’énergie en favorisant un échange thermique intense dans la chambre de compression. La description et l’évaluation de cet échange convectif pour des chambres de compression à faible rapport alésage/course ne sont cependant que peu étudiées dans la littérature scientifique. A l’aide d’une étude expérimentale menée sur deux bancs d’essais, l’échan

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Borges, Gabriel Adão. "Comparação do desempenho energético entre sistema de condicionamento de ar com distribuição pelo piso e pelo teto, utilizando o modelo computacional EnergyPlus." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3153/tde-13072018-111127/.

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Em pauta já há algum tempo, os impactos ambientais, possivelmente gerados pela ação humana, são cada vez mais discutidos e estudados. A busca por um desenvolvimento sustentável e formas mais eficientes do consumo de energia é abordada frequentemente. No Brasil, os edifícios comerciais e públicos apresentam alta demanda de energia elétrica e os sistemas de condicionamento de ar são responsáveis por uma parcela relevante do consumo no país. Para mitigar esse consumo, o sistema de ar condicionado distribuído pelo piso tem sido proposto como uma solução, pois este é intrinsecamente mais eficiente

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Reyes, Ruelas Edward Jonnatan, and Ruelas Edward Jonnatan Reyes. "Diseño del sistema de aire acondicionado para la sala de abastecimiento del sexto piso del Ministerio de Economía y Finanzas." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2016. http://cybertesis.unmsm.edu.pe/handle/cybertesis/6259.

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Publicación a texto completo no autorizada por el autor<br>Diseña un sistema de aire acondicionado. Para ello obtiene la carga térmica de la sala de abastecimiento del sexto piso del Ministerio de Economía y Finanzas, para poder brindar un buen confort térmico a los trabajadores y personas que harán del uso de las instalaciones de las oficinas. En este sentido el proyecto desarrolla paso a paso los cálculos, procedimientos y elaboración de todo los parámetro cuantitativos de la ganancia de calor y así suministrar los equipos de aire acondicionado adecuados para esta climatización.<br>Trabajo d

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Abe, Viviane Caroline. "Determinação de parâmetros de operação de sistema de distribuição de ar frio pelo piso em ambientes de escritórios." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/3/3146/tde-09012008-105839/.

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ABE, V.C. Determinação de parâmetros de operação de sistema de distribuição de ar frio pelo piso em ambientes de escritórios. 2007. 132 p. Dissertação (Mestrado) - Departamento de Engenharia de Construção Civil da Escola Politécnica da Universidade de São Paulo, São Paulo, 2007. Atualmente, um dos principais requisitos para que um ambiente de escritório atenda plenamente às necessidades de uso e ocupação é a flexibilidade, mas com conforto. O sistema de distribuição de ar frio pelo piso (Underfloor Air Distribution System - UFAD) está sendo utilizado nos edifícios de escritórios para garantir

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Inatomi, Thais Aya Hassan. "Análise da eficiência energética do sistema de condicionamento de ar com distribuição pelo piso em ambiente de escritório, na cidade de São Paulo, utilizando o modelo computacional Energyplus." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/3/3146/tde-07102008-110310/.

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Este trabalho tem por finalidade avaliar o desempenho energético do sistema de condicionamento de ar com distribuição pelo piso (Underfloor Air Distribution System UFAD) em ambientes de escritório, considerando diferentes possibilidades de arquitetura do sistema e seus modos de operação com ciclos economizadores. Por meio de simulação computacional, as avaliações foram realizadas para o clima da cidade de São Paulo ao longo de um ano metereológico típico, mantendo as condições de conforto térmico no ambiente. O programa de simulação selecionado como ferramenta foi o EnergyPlus 2.1.0.023, vist

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Reyes, Ruelas Edward Jonnatan. "Diseño del sistema de aire acondicionado para la sala de abastecimiento del sexto piso del Ministerio de Economía y Finanzas." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2016. https://hdl.handle.net/20.500.12672/6259.

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Publicación a texto completo no autorizada por el autor<br>Diseña un sistema de aire acondicionado. Para ello obtiene la carga térmica de la sala de abastecimiento del sexto piso del Ministerio de Economía y Finanzas, para poder brindar un buen confort térmico a los trabajadores y personas que harán del uso de las instalaciones de las oficinas. En este sentido el proyecto desarrolla paso a paso los cálculos, procedimientos y elaboración de todo los parámetro cuantitativos de la ganancia de calor y así suministrar los equipos de aire acondicionado adecuados para esta climatización.<br>Trabajo d

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Fernandes, Sónia. "O impacte da formação da Escola de Voluntariado Pista Mágica (2008-12): a sua repercussão nos formandos aos níveis individual, profissional e atividades de ajuda." Master's thesis, [s.n.], 2013. http://hdl.handle.net/10284/3831.

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Dissertação apresentada à Universidade Fernando Pessoa como parte dos requisitos para a obtenção do grau de Mestre em Ação Humanitária, Cooperação e Desenvolvimento<br>Este trabalho de investigação foi realizado no âmbito do Mestrado em Ação Humanitária, Cooperação e Desenvolvimento da UFP. Analisando as atividades de ajuda e o voluntariado nos dias de hoje constata-se que a formação (que fornece competências humanas, técnicas e operacionais) constitui um vetor essencial para a aquisição de comportamentos que permitam exercer ação humanitária de uma forma profissional e eficaz. Pretendeu-

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Cruz, Ojeda Luis Antonio Rolando. "Diseño de un sistema de inyección de aire para presurización de escaleras de emergencia de un edificio residencial de once pisos." Bachelor's thesis, Universidad Católica Santo Toribio de Mogrovejo, 2017. http://tesis.usat.edu.pe/handle/usat/1460.

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Como resultado de esta investigación se concluye que con el sistema de presurización de escaleras de evacuación se podrá brindar protección y seguridad a las familias que habiten en edificios residenciales y una forma de evacuación segura al momento de ocurrir incendios. La finalidad del sistema de presurización es salvar vidas. El diseño del sistema de presurización está desarrollado pensando en la eficiencia energética exigida en la actualidad, esto es, utilizar un motor eléctrico eficiente como fuente motriz del ventilador centrífugo y el de requerir la cantidad exacta de recursos técnicos

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Silva, Ana Flávia Silveira. "Avaliação da qualidade ambiental interior de um edifício climatizado artificialmente com ênfase na análise do conforto térmico." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-28122010-131829/.

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Ocupantes de ambientes internos climatizados artificialmente estão expostos contínua e prolongadamente a condições ambientais muitas vezes desfavoráveis à execução de suas atividades e à manutenção da saúde. O objetivo desta pesquisa foi avaliar alguns parâmetros de qualidade do ar interior e de conforto térmico de um edifício climatizado artificialmente e relacioná-los à utilização de sistema de condicionamento de ar com distribuição pelo piso em ambientes que não são caracterizados como escritórios abertos. Considerando que o edifício estudado apresenta usos distintos de seus pavimentos, opt

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Faugier, Loreline. "Modeling airflow related to train movement in subway stations : small-scale model and numerical simulations compared to on-site measurements." Electronic Thesis or Diss., La Rochelle, 2023. http://www.theses.fr/2023LAROS022.

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La qualité de l'air et l'efficacité de la ventilation dans les stations de métro souterraines sont des préoccupations en matière de santé et de sécurité. L'effet piston, causé par le passage des trains, contribue de manière significative aux mouvements d'air. La réalisation de mesures sur site étant coûteuse, l’utilisation de modèle permet d’étudier et de prédire la circulation de l'air dans ces environnements. Les différences entre les données mesurées et modélisées sont cependant rarement discutées. Cette thèse développe des modèles pour la circulation de l’air induite par les trains sur les

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Rodas, Gomez Franco Antonio Germain. "Diseño de un sistema de aire acondicionado de bajo costo de operación para las oficinas administrativas del cuarto piso del edificio de ingeniería USAT – Chiclayo." Bachelor's thesis, Universidad Católica Santo Toribio de Mogrovejo, 2018. http://hdl.handle.net/20.500.12423/1857.

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El siguiente trabajo tiene por finalidad proponer el diseño de un sistema de aire acondicionado de bajo costo de operación para un local destinado a labores de oficina, en la ciudad de Chiclayo. Este local presenta, en la actualidad, climatización mediante la utilización de sistemas convencionales de aire acondicionado, generando un alto consumo eléctrico en épocas de verano cuando su utilización es más constante. El propósito de estudiar este problema es impulsar el desarrollo de sistemas alternativos de acondicionamiento de aire que tengan un costo de operación bajo para la climatización de

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Wang, Yue. "Numerical Studies of Flow and AssociatedLosses in the Exhaust Port of a Diesel Engine." Doctoral thesis, KTH, Mekanik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-134844.

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In the last decades, the focus of internal combustion engine development has moved towards more efficient and less pollutant engines. In a Diesel engine, approximately 30-40% of the energy provided by combustion is lost through the exhaust gases. The exhaust gases are hot and therefore rich of energy. Some of this energy can be recovered by recycling the exhaust gases into turbocharger. However, the energy losses in the exhaust port are highly undesired and the mechanisms driving the total pressure losses in the exhaust manifold not fully understood. Moreover, the efficiency of the turbine is

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Liang, Man. "Optimisation du réseau de routes en zone terminale." Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30003/document.

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La congestion dans les Terminal Manoeuvring Area (TMA) des aéroports en hub est le principal problème dans le transport aérien chinois. Face au trafic extrêmement dense dans les TMAs, nous pouvons envisager d'automatiser une grande partie des opérations de routine, comprenant la planification, le séquencement et la séparation. Nous proposons dans cette thèse un nouveau système automatisé de séquencement des avions et de fusion des flux vers des pistes parallèles, qui sont utilisées dans la plupart des aéroports chinois. Notre méthodologie intègre un réseau de route 3D nommé Multi-Level and Mul

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Rydén, Gustav, and Fredrik Anarp. "Beräkningsmodell för slagtider av pneumatiska manöverdon : En experimentell och teoretisk studie av beteendet för pneumatiska cylindrar samt manöverdon." Thesis, Linköpings universitet, Fluida och mekatroniska system, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-166356.

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Denna rapport redogör framtagningen av en beräkningsmodell för slagtider av pneumatiska cylindrar och manöverdon. Slagtiderna för ett manöverdon kan bestämmas genom experimentella tester. För att underlätta och minska tiden som krävs i samband med testerna skapas en beräkningsmodell som presenterar teoretiska värden för slagtiderna. Denna beräkningsmodell stämmer kvalitativt överens med de experimentella tester som också genomförs i detta arbete. Testerna genomförs först på en enkel pneumatisk cylinder vilket bidrar till kunskaper om slagkarakteristik och slagtider. Denna kunskap är till hjälp

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粘慧珍. "shooting sport in olympic games and asia games air pistol and sport pistol." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/75078224500167013301.

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碩士<br>國立體育學院<br>教練研究所<br>89<br>Abstract Developments of “Shooting Sport” have popularized through out the world. It was included in the first modern Olympic Games in 1896. The Asia Games also added shooting as one of the contests from 1954. Since 1960, Mainland China has put great emphasis on developments of shooting sport. At present, four of the seventeen Olympic Games shooting contests records (air pistol men and women, sport pistol women, and ten meter running target men) were set by the CHN delegation. However, due to the control of firearms and only a small number of part

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Feng, Wen-Yu, and 馮文瑜. "The Analysis of the Aiming Locus of Female Air Pistol Athletes." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/73073592502051365368.

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碩士<br>國立臺灣師範大學<br>體育學系<br>95<br>The stability of aiming is one of the most important elements of shooting sport. Purposes: The purposes of this study was to compare the differences between the superior and inferior 10m Air Pistol athletes’ aiming track parameter when they were performing shooting. And explore the correlation between the scores and aiming track parameter before shooting. Methods: Using RIKA Home Air Pistol trainer system to receive the aiming track signal of infrared rays, and to collect the athletes’ aiming track data by the software, RIKA Home trainer 2.05 edition. We used a

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Wang, Yung-Shun, та 王永順. "The effect of Neurofeedback Training on T3-α and Air Pistol Shooting Performance". Thesis, 2008. http://ndltd.ncl.edu.tw/handle/01518867627383683484.

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碩士<br>臺北巿立體育學院<br>運動科學研究所<br>96<br>Neurofeedback is a therapy technique in which the brain is trained to improve its regulation of all bodily functions and its ability to take care of itself. The quality of the brain’s self-regulation affects the cognitive performance of every human. If regulation within brain does not occur properly, it may result in the malfunction of emotions and normal cognitive ability. Neurofeedback training mainly focuses on enhancing self-regulation by using different training models to target specific needs. This article reviews studies of neurofeedback training from

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Tu, Yu-Long, and 杜雨龍. "The relationship between sensory motor rhythm and performance in expert air pistol shooters." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/36299543166043435403.

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碩士<br>國立臺灣師範大學<br>體育學系<br>103<br>The sensorimotor rhythm (SMR) is a special frequency band of 12-15 Hz mainly in sensorimotor area. The power of SMR is inversely related to the activation of this area. Higher SMR might represent an adaptive regulation of cognitive-motor processing, which is useful for the understanding of the preparatory processes in precision sports. Therefore, this study compared SMR power between the best and the worst shots in 18 expert shooters (aged 18.28 ± 2.32 yr) with 4.67 ± 2.25 years of shooting experience. Shooters were recruited to shoot for 40 trials while EEG wa

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Lin, Chien-tseng, and 林建增. "Relationships between Attention Focus, Heart Rate Variability and Performance during Air-Pistol Shooting." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/48024500532605647260.

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碩士<br>國立臺灣師範大學<br>體育學系在職進修碩士班<br>99<br>Purpose: This study aimed to examine the relationships between attention focus, heart rare variability and shooting performance. Methods: An elite male high-school air pistol shooter participated in the study. The participant was asked to shoot 80 times under a regular practicing situation and a simulation competition. Under each situation, the shooter fired 20 times by using an internal and external attentional strategy, respectively. Shooting scores and heart rate variability [low-frequency LF (0.04-0.15 Hz), high frequency HF (0.15-0.4 Hz), low/high fr

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Lin, Yuan-Chi, and 林源琦. "An Automatic Scoring System for Air Pistol Shooting Competition Based on Image Processing Techniques." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/71037248758690379870.

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碩士<br>中原大學<br>電子工程研究所<br>104<br>Traditionally, the shooting scores for air pistol competition are processed manually. These come with a lot of issues such as the lengthy processing time, great demand on manpower and even security concern. Currently, automatic score recording technology has been developed, but the resulting products must be imported and they are usually expensive. For the sake of gaining popularity of shooting sports, developing an automatic score recording system becomes a meaningful research work. This study investigates how to apply image processing techniques to automat

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Chang, Tzu-Chieh, and 張智傑. "Effects of Heart Rate Biofeedback Training on Performance and EEG Activity of Air Pistol Shooters." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/61893307585756819413.

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碩士<br>臺北市立教育大學<br>體育學系碩士班<br>96<br>The purpose of this study was to examine the effects of heart rate biofeedback training on performance and EEG activity of air pistol shooters. Participants were 16 males. Eight shooters were participating heart rate (HR) biofeedback training served as training group and eight shooters un-participating served as control group. Training group was subjected to biofeedback training for 30 minutes each time, 3 times a week for 10 weeks. Each shooters’ performance and heart rate data were collected before the training, 5 weeks、10 weeks during the training ,and 2 w

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郭孟熙. "Strategies for Achieving Shooting Gold Medal in 2008 Olympic Games - An Example of Women Air Pistol." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/q86njd.

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碩士<br>國立體育大學<br>教練研究所<br>95<br>Abstract Female Air Pistol is one of the main developing games in our national shooting team these two years, and is one of the priority games to take challenge for Beijing Olympic Games. Our strength is very close to world top level standards, and has many reserve players in the shooting team. I joined this group in an occasional chance in year 1994. In over a decade, I have been asking advice from many famous coaches like coach Ku ping- chi,Chao kuo-jui,Chang heng, Kan chun-feng, Tsai tien-hsiang, Chia ching-shih, Chien kuan-cheng, Cheng mao-sen, Tu tai-hsing,

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Tsai, Chia-Hui, and 蔡佳惠. "The relationships between affective states and sport performance: Affect-related performance zones in elite air pistol shooters." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/87898083291975334660.

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碩士<br>國立臺灣師範大學<br>體育學系<br>103<br>The relationships between affective states and sport performance: Affect-related performance zones in elite air pistol shooters. June, 2015 Tasi, Chia-hui Advisor: Chi, Li-kang Abstract Enhance athletic performance has been a topic of concern by the coaches, athletes and sports-related personnel. Researcher represented the individual-affect-related performance zones (IAPZs), expecting to understand the relationship between emotional states and performance qualities, and determining the probability of different performance levels in a particular emotional state.

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Dembroski, Terry Joseph. "Piston heat transfer in an air-cooled engine." 2002. http://catalog.hathitrust.org/api/volumes/oclc/50852962.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 2002.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 87-89).

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Hu, Cheng-Kang, and 胡政綱. "Investigation and improvement of piston type compressed air engines." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/19410500761411505045.

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碩士<br>國立清華大學<br>動力機械工程學系<br>100<br>In the past few decades, energy conservation and carbon reduction have become a very important issue around the world. In order to replace conventional internal combustion (IC) engines with green energy engines, several kinds of green energy sources have been studied for their feasibilities to power motor vehicles. High pressure compressed air is considered as one of the green energy sources for its advantage of low carbon emission. This study focuses on the investigation of piston-type air-powered engines with experiments and theoretical calculation. The res

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PANDEY, SHAILESH MANI. "Wear Behaviour of Piston Ring Coatings." Thesis, 2013. http://dspace.dtu.ac.in:8080/jspui/handle/repository/14252.

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The functions of a piston ring are to seal off the combustion pressure, to distribute and control the oil, to transfer heat and to stabilize the piston. Most piston rings and metallic sealing rings for modern application require some form of coating, where running conditions are severe to minimise abrasion and corrosion. The piston ring coating improves the life of engine as well as fuel efficiency. In this study, three type of piston coating processes were investigated: Plasma Arc Spray, Hard Chrome Plating & Gas Nitriding. Plates with similar composition as the piston ring material wer

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Ball, Kevin. "Body Sway and Aim Point Fluctuation in Rifle and Pistol Shooters." Thesis, 1999. https://vuir.vu.edu.au/217/.

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This study examined the effects of quantisation of force plate data used to measure body sway and the relationship between this body sway, aim point fluctuation and performance in shooting. Quantisation error in and resolution of selected body sway parameters were calculated from force plate data sampled using 12-bit and 16-bit analog to digital conversion (ADC). It was concluded that 12-bit ADC does not offer adequate precision when assessing the body sway of shooters and that 16-bit ADC is required. The relationship between body sway, aim point fluctuation and performance was examined on bot

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Ball, Kevin. "Body Sway and Aim Point Fluctuation in Rifle and Pistol Shooters." 1999. http://eprints.vu.edu.au/217/1/217contents.pdf.

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This study examined the effects of quantisation of force plate data used to measure body sway and the relationship between this body sway, aim point fluctuation and performance in shooting. Quantisation error in and resolution of selected body sway parameters were calculated from force plate data sampled using 12-bit and 16-bit analog to digital conversion (ADC). It was concluded that 12-bit ADC does not offer adequate precision when assessing the body sway of shooters and that 16-bit ADC is required. The relationship between body sway, aim point fluctuation and performance was examined on bot

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Lu, Chia-hua, and 呂嘉華. "Development and Multiple Design of Piston Air Motor for Tracking Position Control." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/41189348386635005285.

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碩士<br>國立中央大學<br>機械工程學系<br>101<br>In general, air motors have been applied for automation in industry. There are many kinds of air motors used in automation equipment, such as vane air motors, radial piston air motors, and so on. The advantage of the piston air motor is that it is able to provide larger torque at low speed than vane-type motors. This character is suitable for position control application on a ball screw table. Because there are few researches related to this subject so that the main contribution is to develop the mathematical model of radial piston air motor according to the pn

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You, Jhih Jie, and 游智傑. "Intake / Exhaust System Development and Vehicle Applications of Piston Type Compressed Air Engines." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/01321935808229984140.

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Chou, Fang Hsing, and 周芳興. "The Feasibility Study of Idle Start in Single-cylinder Piston-type Air Hybrid Engines." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/95144304492918543579.

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碩士<br>國立清華大學<br>動力機械工程學系<br>103<br>The study aims to investigate feasibility of a single cylinder piston-type compressed air engine assisting to an internal combustion engine for idle start. The engine will be started as compressed air engine mode at beginning and it will later switch to internal combustion mode once the engine speed reaches to higher rpm. In this study, a theoretical analysis using thermodynamics and compressed air model has been carried out with MATLAB to understand the engine performance as well as fluid characteristics. A commercial available 100 c.c. single cylinder four-

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