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A mechanical model of an axial piston machineLöfstrand Grip, Rasmus January 2009 (has links)
<p>A mechanical model of an axial piston-type machine with a so-called wobble plate and Z-shaft mechanism is presented. The overall aim is to design and construct an oil-free piston expander demonstrator as a first step to realizing an advanced and compact small-scale steam engine system. The benefits of a small steam engine are negligible NOx emissions (due to continuous, low-temperature combustion), no gearbox needed, fuel flexibility (e.g., can run on biofuel and solar), high part-load efficiency, and low noise. Piston expanders, compared with turbines or clearance-sealed rotary displacement machines, have higher mechanical losses but lower leakage losses, much better part-load efficiency, and for many applications a more favourable (i.e., lower) speed. A piston expander is thus feasible for directly propelling small systems in the vehicular power range. An axial piston machine with minimized contact pressures and sliding velocities, and with properly selected construction materials for steam/water lubrication, should enable completely oil-free operation. An oil-free piston machine also has potential for other applications, for example, as a refrigerant (e.g., CO<sub>2</sub>) expander in a low-temperature Rankine cycle or as a refrigerant compressor.</p><p> </p><p>An analytical rigid-body kinematics and inverse dynamics model of the machine is presented. The kinematical analysis generates the resulting motion of the integral parts of the machine, fully parameterized. Inverse dynamics is applied when the system motion is completely known, and the method yields required external and internal forces and torques. The analytical model made use of the “Sophia” plug-in developed by Lesser for the simple derivation of rotational matrices relating different coordinate systems and for vector differentiation. Numerical solutions were computed in MATLAB. The results indicate a large load bearing in the conical contact surface between the mechanism’s wobble plate and engine block. The lateral force between piston and cylinder is small compared with that of a comparable machine with a conventional crank mechanism.</p><p> </p><p>This study aims to predict contact loads and sliding velocities in the component interfaces. Such data are needed for bearing and component dimensioning and for selecting materials and coatings. Predicted contact loads together with contact geometries can also be used as input for tribological rig testing. Results from the model have been used to dimension the integral parts, bearings and materials of a physical demonstrator of the super-critical steam expander application as well as in component design and concept studies.</p>
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Metanoias de Sofia: um estudo sobre as imagens arquetípicas da Eterna Sabedoria na obra de C.G. JungCorrêa, Ivan 13 September 2016 (has links)
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Previous issue date: 2016-09-13 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Pontifícia Universidade Católica de São Paulo / This dissertation takes the objective of presenting a critical systematization of symbolic amplifications made by C. G. Jung regarding archetypal images of the Judeo-Christian mythic field related to the Ageless Wisdom. Thus, it seeks to establish possible linkages of meaning among scattered remarks made by Jung concerning the images of the Jewish Sapientia Dei, the Christian Sanctus Spiritus and the Gnostic Sophia Achamoth. From different writings of Jung, it highlights and systematizes the moments in which the author alluded the images of the Eternal Wisdom while symbolically reflected about themselves or different themes and mythological sections, in order to foment clarification about the modes of action of each of the listed archetypal images / Esta dissertação tem como objetivo a apresentação de uma sistematização crítica das amplificações simbólicas feitas por C. G. Jung acerca de imagens arquetípicas do campo mítico judaico-cristão relacionadas à Eterna Sabedoria. Dessa maneira, procura estabelecer possíveis nexos de sentidos nas considerações dispersas feitas por Jung a respeito das imagens da judaica Sapientia Dei, do cristão Sanctus Spiritus e da gnóstica Sophia Achamoth. A partir dos diferentes escritos de Jung, evidencia-se e sistematiza-se os momentos nos quais o autor fez alusão às imagens da Eterna Sabedoria enquanto refletia simbolicamente a respeito delas mesmas ou de diferentes temas e recortes mitológicos, de modo a fomentar esclarecimento acerca do modo de atuação de cada uma das imagens arquetípicas elencadas
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Sophia Jobim: trajetória e individualidade. Uma experiência singular do feminismo brasileiro / Sophia Jobim: trajectory and individuality. A unique experience of Brazilian feminismAna Carolina de Azevedo Guedes 29 April 2015 (has links)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Conselho Nacional de Desenvolvimento Científico e Tecnológico / Nesta dissertação abordaremos a indumentarista, professora e feminista Sophia Jobim Magno de Carvalho (1904 1968). Sophia Jobim nascida Maria Sofia Pinheiro Machado Jobim, em Avaré em 19 de Setembro de 1904. Fundou em 1947, a primeira sede do Clube Soroptimista no Brasil, em sua casa com Bertha Lutz, ocupando o cargo de presidente durante quatro anos. Em 1949, ocupa o cargo de regente da disciplina de Indumentária e Arte Decorativa na Escola Nacional de Belas-Artes (ENBA). Através desse cargo, Sophia viajava para colecionar peças de diferentes países e apresentá-los nas suas aulas, além de fundar o primeiro museu de indumentária da América Latina, em sua casa, em Santa Teresa RJ, em 1960. Após sua morte por embolia pulmonar, em 1968, seu acervo é totalmente doado ao Museu Histórico Nacional, instituição na qual se graduou no Curso de Museologia, em 1963. Com este trabalho pretendemos trazer à tona uma parcela do material doado por Sophia e evidenciando suas ações como feminista, trazendo para o trabalho a discussão em torno do individuo utilizando como teóricos Georg Simmel e Gilberto Velho. A formação da ENBA, e a cooptação dos intelectuais no Estado Novo são temas a serem mobilizados durante o trabalho, além da sociabilidade como forma de análise do período e do campo por onde Sophia caminhou. Através deste trabalho buscamos proporcionar uma breve visão sobre Sophia Jobim e contribuir aos estudos sobre o feminismo e a individualidade. / This dissertation will focus in the indumentarist, teacher and feminist Sophia JobimMagno de Carvalho (1904 1968). Sophia Jobim was born Maria Sophia Pinheiro Machado, in Avaré, on September, 19, 1904. Founded in 1947, the first headquarters of the Soroptmist Club in Brazil, in your home, with Bertha Lutz, and occupying the position of president for four years. In 1949, she holds the position of conductor of the discipline of History of clothing and decorative art in the Nacional School of Fine Arts. Through this post, Sophia traveled to collect pieces from different countries and present them in their classes, and founded the first museum of Latin America costume at home, in Santa Teresa RJ, on 1960. After her death from pulmonary embolism in 1968, its colletion is entirely donated to the Nacional Historical Museum, the institution where she graduated from the course in museology in 1963. With this work we intended to bring out a portion of the material donated by Sophia showing their actions as feminist, bringing the discussion to work around the individual using theoretical as Georg Simmel and Gilberto Velho. Training and cooptation donates intellectuals in the ENBA, and New State are to be mobilized during work, as well as a form of sociability as a form of analysis of the period and country where Sophia walked. Through this work we provide a brief overview of Sophia Jobim and contribute to studies on feminism and individuality.
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"Behold me and this great Babylon I have built" : the life and work of Sophia Sawyer, 19th century missionary and teacher among the Cherokees /Castelow, Teri L. MacDonald, Victoria-María, January 2005 (has links)
Thesis (Ph. D.)--Florida State University, 2005. / UMI #: 3217055 -- T.P. verso. Advisor: Victoria-Maria MacDonald, Florida State University, College of Education, Dept. of Educational Leadership and Policy Studies. Includes bibliographical references.
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"Behold me and this great Babylon I have built" the life and work of Sophia Sawyer, 19th century missionary and teacher among the Cherokees /Castelow, Teri L. MacDonald, Victoria-María, January 2005 (has links)
Thesis (Ph. D.)--Florida State University, 2005. / Advisor: Victoria-Maria MacDonald, Florida State University, College of Education, Dept. of Educational Leadership and Policy Studies. Title and description from dissertation home page (viewed <date>). Document formatted into pages; contains vi, 143 pages. Includes bibliographical references.
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Casa de silêncio, Mar de solidão: o espaço literário nos contos de Orlanda Amarílis e de Sophia de M. B. AndresenGrecco, Fabiana Miraz Freitas [UNESP] 16 December 2014 (has links) (PDF)
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000822833.pdf: 2453782 bytes, checksum: ba7c64617b53f02ca5782537f30cbceb (MD5) / A presente pesquisa teve por objetivo comparar os espaços dos contos da escritora caboverdiana Orlanda Amarílis e da poeta e escritora portuguesa Sophia de Mello Breyner Andresen. A partir das leituras de seus manuscritos e das versões dos seus contos dispersos em antologias e revistas literárias, propusemos a elaboração de um texto que pretendesse estabelecer um espaço comum entre essas obras, que têm em sua estrutura a preocupação obstinada com o espaço literário. Os desdobramentos das análises, pautadas nas noções de heterotopias e nos mecanismos de funcionamento do espaço na narrativa fantástica, resultaram na presença de um espaço comum entre a casa e o mar, habitados pelo silêncio e pela solidão / This study aimed to compare the spaces of the short stories of Cape Verdean writer Orlanda Amarilis and Portuguese writer and poet Sophia de Mello Breyner Andresen. From the readings of theirs manuscripts and versions of his tales scattered in anthologies and literary magazines we proposed the drafting of a text wishing to establish a common ground between these works, which has in the literary space its stubborn preoccupation. The outcomes of the analysis, guided the notions of heterotopias and workings of space in fantastic narrative resulted in the presence of a common space between the house and the sea, inhabited by silence and solitude
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Sophia Jobim: trajetória e individualidade. Uma experiência singular do feminismo brasileiro / Sophia Jobim: trajectory and individuality. A unique experience of Brazilian feminismAna Carolina de Azevedo Guedes 29 April 2015 (has links)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Conselho Nacional de Desenvolvimento Científico e Tecnológico / Nesta dissertação abordaremos a indumentarista, professora e feminista Sophia Jobim Magno de Carvalho (1904 1968). Sophia Jobim nascida Maria Sofia Pinheiro Machado Jobim, em Avaré em 19 de Setembro de 1904. Fundou em 1947, a primeira sede do Clube Soroptimista no Brasil, em sua casa com Bertha Lutz, ocupando o cargo de presidente durante quatro anos. Em 1949, ocupa o cargo de regente da disciplina de Indumentária e Arte Decorativa na Escola Nacional de Belas-Artes (ENBA). Através desse cargo, Sophia viajava para colecionar peças de diferentes países e apresentá-los nas suas aulas, além de fundar o primeiro museu de indumentária da América Latina, em sua casa, em Santa Teresa RJ, em 1960. Após sua morte por embolia pulmonar, em 1968, seu acervo é totalmente doado ao Museu Histórico Nacional, instituição na qual se graduou no Curso de Museologia, em 1963. Com este trabalho pretendemos trazer à tona uma parcela do material doado por Sophia e evidenciando suas ações como feminista, trazendo para o trabalho a discussão em torno do individuo utilizando como teóricos Georg Simmel e Gilberto Velho. A formação da ENBA, e a cooptação dos intelectuais no Estado Novo são temas a serem mobilizados durante o trabalho, além da sociabilidade como forma de análise do período e do campo por onde Sophia caminhou. Através deste trabalho buscamos proporcionar uma breve visão sobre Sophia Jobim e contribuir aos estudos sobre o feminismo e a individualidade. / This dissertation will focus in the indumentarist, teacher and feminist Sophia JobimMagno de Carvalho (1904 1968). Sophia Jobim was born Maria Sophia Pinheiro Machado, in Avaré, on September, 19, 1904. Founded in 1947, the first headquarters of the Soroptmist Club in Brazil, in your home, with Bertha Lutz, and occupying the position of president for four years. In 1949, she holds the position of conductor of the discipline of History of clothing and decorative art in the Nacional School of Fine Arts. Through this post, Sophia traveled to collect pieces from different countries and present them in their classes, and founded the first museum of Latin America costume at home, in Santa Teresa RJ, on 1960. After her death from pulmonary embolism in 1968, its colletion is entirely donated to the Nacional Historical Museum, the institution where she graduated from the course in museology in 1963. With this work we intended to bring out a portion of the material donated by Sophia showing their actions as feminist, bringing the discussion to work around the individual using theoretical as Georg Simmel and Gilberto Velho. Training and cooptation donates intellectuals in the ENBA, and New State are to be mobilized during work, as well as a form of sociability as a form of analysis of the period and country where Sophia walked. Through this work we provide a brief overview of Sophia Jobim and contribute to studies on feminism and individuality.
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Lírica Líquida: a água na poesia de Cecília Meireles e de Sophia AndresenFonseca, Isadora Santos 30 March 2016 (has links)
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Previous issue date: 2016-03-30 / CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The dissertation “Lírica Líquida: a água na poesia de Cecília Meireles e de Sophia Andresen” (Liquid Lyric: the water in a Cecilia Meireles and Sophia Andresen’s poetry) is the research's final result which main objective was to analyze some poems of the books Mar absoluto e outros poemas, by Cecília Meireles, and Poesia, by Sophia Andresen, for establishing the subjectivity expression composed by the water symbols. As a comparative study, the objective execution was done through specifics objectives which were: list some moments in a XX century, that are able to situate the chosen books; establish a discussion around the creational poetic process used by Cecília Meireles and Sophia Andresen; explain subjectivity and otherness, justifying their presence in the chosen poems; and, finally, establish a comparison or by similarity or by dissimilarity between the poems whose themes and images appear linked to the water element. As a literary analysis, this research was developed through bibliographic methodology, by theoretical and critics texts systematization, as well as selection of poems contained in the chosen books. In this way, this introduction text’s brings some general elements about poetry, the new humanism's theory, by Emmanuel Lévinas, the material imagination theory, by Gaston Bachelard and the thematic criticism theory, considered by Daniel Bergez. The first chapter is composed by contextual elements about the twentieth century that surrounded these author’s poetic production; then, it is listed the literary criticism about Cecília Meireles and Sophia Andresen. The second chapter, by its turn, is constituted by the analysis of the chosen poems in the mentioned books. The third chapter, so, establishes the comparison for similarity or dissimilarity of themes that each one of writers had treated. This dissertation is concluded making a synthesis of the presented discussion in each chapter and proposing that the relation between Cecília Meireles’ and Sophia Andresen’s poetry provides elements for a comparative study based in the influence that cecilian’s poetry has over the andresenian’s poetry and that the subjectivity expression related to the water image, like a mirror, evokes some questions about ethic and static esthetic. / A dissertação “Lírica Líquida: a água na poesia de Cecília Meireles e de Sophia Andresen” é o resultado final da pesquisa que teve por objetivo geral analisar alguns poemas dos livros Mar absoluto e outros poemas, de Cecília Meireles, e Poesia, de Sophia Andresen, para estabelecer a expressão da subjetividade nas imagens construídas em torno do símbolo da água. Como um estudo comparado, o cumprimento desse objetivo ocorreu por meio dos objetivos específicos de elencar alguns momentos do século XX capazes de situar as obras escolhidas; estabelecer discussão acerca do processo de criação poética de Cecília Meireles e Sophia Andresen; conceituar subjetividade e alteridade para justificar as suas presenças nos poemas selecionados; e, por fim, estabelecer uma comparação ou por semelhança ou por diferença nos poemas em que os temas e as imagens aparecem relacionados ao elemento da água. Por se tratar de análise de obras literárias, tal estudo foi desenvolvido sob a metodologia de caráter bibliográfico, por meio de sistematização de textos teóricos e de fortuna crítica, além da seleção de poemas pertencentes aos livros escolhidos. Dessa forma, a introdução deste texto traz alguns elementos gerais sobre poesia, a teoria do novo humanismo, de Emmanuel Lévinas, da imaginação material, de Gaston Bachelard e da crítica temática, discutida por Daniel Bergez. O capítulo primeiro é composto por elementos contextuais do século XX que circundou a produção poética das autoras; após isto, é elencada a fortuna crítica de Cecília Meireles e de Sophia Andresen. O capítulo segundo, por sua vez, constitui-se da análise propriamente dita dos poemas selecionados dos mencionados livros. O terceiro capítulo, então, estabelece a comparação por semelhança ou diferença do tratamento dos temas que cada autora faz. Conclui-se esta dissertação fazendo a síntese das discussões apresentadas em cada capítulo e propondo que a relação entre a poesia de Cecília Meireles e de Sophia Andresen favorece que seja feito um estudo de comparação baseado na influência da poesia ceciliana sobre a poesia andreseniana e que a expressão da subjetividade relacionada à imagem da água, análoga ao espelho, suscita alguns questionamentos sobre a relação entre ética e estética.
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A mechanical model of an axial piston machineLöfstrand Grip, Rasmus January 2009 (has links)
A mechanical model of an axial piston-type machine with a so-called wobble plate and Z-shaft mechanism is presented. The overall aim is to design and construct an oil-free piston expander demonstrator as a first step to realizing an advanced and compact small-scale steam engine system. The benefits of a small steam engine are negligible NOx emissions (due to continuous, low-temperature combustion), no gearbox needed, fuel flexibility (e.g., can run on biofuel and solar), high part-load efficiency, and low noise. Piston expanders, compared with turbines or clearance-sealed rotary displacement machines, have higher mechanical losses but lower leakage losses, much better part-load efficiency, and for many applications a more favourable (i.e., lower) speed. A piston expander is thus feasible for directly propelling small systems in the vehicular power range. An axial piston machine with minimized contact pressures and sliding velocities, and with properly selected construction materials for steam/water lubrication, should enable completely oil-free operation. An oil-free piston machine also has potential for other applications, for example, as a refrigerant (e.g., CO2) expander in a low-temperature Rankine cycle or as a refrigerant compressor. An analytical rigid-body kinematics and inverse dynamics model of the machine is presented. The kinematical analysis generates the resulting motion of the integral parts of the machine, fully parameterized. Inverse dynamics is applied when the system motion is completely known, and the method yields required external and internal forces and torques. The analytical model made use of the “Sophia” plug-in developed by Lesser for the simple derivation of rotational matrices relating different coordinate systems and for vector differentiation. Numerical solutions were computed in MATLAB. The results indicate a large load bearing in the conical contact surface between the mechanism’s wobble plate and engine block. The lateral force between piston and cylinder is small compared with that of a comparable machine with a conventional crank mechanism. This study aims to predict contact loads and sliding velocities in the component interfaces. Such data are needed for bearing and component dimensioning and for selecting materials and coatings. Predicted contact loads together with contact geometries can also be used as input for tribological rig testing. Results from the model have been used to dimension the integral parts, bearings and materials of a physical demonstrator of the super-critical steam expander application as well as in component design and concept studies.
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Cultural Heritage and Nationalism : A Case Study of the (re-)conversion of Hagia Sophia into a MosqueLales, Efstratios January 2023 (has links)
The aim of this study was to assess the cultural heritage implications of converting Hagia Sophia in Istanbul, Turkey from a museum into a mosque in July 2020. Through analysing cultural heritage management as a tool that could support the building of nationalism, this thesis explores the links between nationalism and cultural heritage. Discourse Analysis was used to answer the research question, facilitating research on the selected texts and the respective political discourses. To study the conversion of Hagia Sophia into a mosque, information was collected through the Internet, with an emphasis on interviews, articles, and tweets from Turkish government officials during the period from the reconversion of the monument to the present day. Discourse analysis shows that in our case, cultural heritage management was used within the context of emotional politics and the pursuit of political objectives of the ruling party with the side effect of disempowering subgroups of the Turkish society whose sense of history and place is not compatible with the prevailing discourse.
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