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Souza, Danilo Paula de. "Education quality and non-converge." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/12/12138/tde-30092015-105003/.
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This dissertation assesses the role of education quality in the convergence process of GDP per capita through teacher\'s quality impact in human capital formation. The simple two-period OLG model suggests initial level of teacher\'s human capital is important to explain non-convergence, even when education quality return is decreasing. This non-convergence arises because an initially low level of teachers\' human capital translates into a low level of human capital transferred to students, which means a low level of teachers\' human capital in the next period, and so on. This work, therefore, provides an alternative explanation of why countries income does not converge, even when differences in other inputs are not accounted forEsta dissertação analisa o papel da qualidade da educação no processo de convergência do PIB per capita através do impacto da qualidade de professores na formação de capital humano. O modelo de gerações sobrepostas proposto sugere que o nível inicial de capital humano dos professores é importante para explicar o fenômeno da não-convergência, mesmo quando o retorno marginal da qualidade da educação é decrescente. Esta não-convergência surge porque um baixo nível inicial de capital humano dos professores se traduz em um baixo nível de capital humano transferido aos alunos, o que significa um baixo nível de capital humano dos professores no próximo período, e assim por diante. Este trabalho, portanto, fornece uma explicação alternativa do porquê não se observa convergência de renda entre países, mesmo quando as diferenças de outros fatores de produção não são levadas em conta.
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MENEZES, Bianca Helena Ximenes de Melo e. "Converge model: teaching innovation alongside software development." Universidade Federal de Pernambuco, 2015. https://repositorio.ufpe.br/handle/123456789/14927.
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The software development industry has gone through great changes in the last decade. The shift from computer to mobile devices, alongside the popularization of internet of things and wearables have expanded markets and changed the industry. All these factors combined offer many opportunities in innovative new market niches. However, technology-sector projects and startups often fail for a number of reasons that are rarely technical, related instead to market and customer discovery. One of the possible causes is that higher education in software development in the field of Computer Science overlooks business and market aspects, consequently underpreparing students to deal with real-life challenges in software projects. In order to address this situation, a management model meant to guide the development of innovative software products is proposed. This model, named Converge, considers every software project is based on three pillars – technical ability, market and user. To accommodate those three aspects, state of the art methods connected to each pillar were studied extensively and combined. Those methods are Agile development (represented by Scrum and Extreme Programming practices), Lean Startup and Design Thinking. Converge Model’s efficacy in guiding software projects was assessed by implanting the model inside a University mobile experimentation lab that consisted exclusively of undergraduate students. After implantation, there was an assessment of the model’s impact on final products, development process and students’ education, during 10 months. Two case studies were done and are described in this work, explaining the process and listing qualitative results. Finally, to evaluate whether students who took part in the lab changed their perception of software development and developed skills besides technical abilities, a subjective questionnaire was applied and its results examined, depicting Converge Model’s influence on students’ formation and possible educational applications.
A indústria de desenvolvimento de software passou por grandes mudanças na última década. O aumento de fluxo de pessoas para os dispositivos móveis, junto à popularização da internet das coisas e dos dispositivos vestíveis expandiram mercados e mudou a indústria. Todos esses fatores combinados oferecem oportunidades em nichos inovadores de mercado. No entanto, os projetos e startups do setor de tecnologia muitas vezes falham por uma série de razões que raramente são técnicas, relacionadas na realidade ao conhecimento de mercado e do usuário. Uma das possíveis causas para o insucesso é que o ensino superior em desenvolvimento de software na área de Ciência da Computação relega a segundo plano aspectos de mercado, consequentemente fornecendo aos alunos formação insuficiente para lidar com desafios reais dos projetos de software. A fim de abordar esta situação, um modelo de gestão que objetiva guiar o desenvolvimento de produtos inovadores de software é proposto. Este modelo, denominado Converge, considera que todo projeto de software é baseado em três pilares - capacidade técnica, mercado e usuário. Para acomodar esses três aspectos, o estado da arte dos métodos ligados a cada um dos pilares foi investigado extensivamente, permitindo a combinação dos métodos. Esses métodos são o desenvolvimento Ágil (representado por práticas de Scrum e Extreme Programming), Lean Startup e Design Thinking. A eficácia do modelo Converge para orientar projetos de software foi avaliada através da implantação do modelo dentro de um laboratório de experimentação mobile na Universidade, composta exclusivamente por alunos de graduação. Após a implantação do modelo, houve uma avaliação do seu impacto em produtos finais, no processo de desenvolvimento e na formação dos alunos, durante 10 meses. Dois estudos de caso foram feitos e são descritos nesta dissertação, explicando o processo e listando resultados qualitativos. Finalmente, para avaliar se os estudantes que participaram do laboratório mudaram sua percepção acerca de desenvolvimento de software e desenvolveram habilidades além da capacidade técnica, um questionário subjetivo foi aplicado e os resultados analisados, descrevendo a influência do modelo Converge no desenvolvimento dos alunos e possíveis aplicações educacionais.
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Fuentes, Martinez Ana. "Teachers’ tactics when programming and mathematics converge." Licentiate thesis, Högskolan Väst, Avd för medier och design, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-16379.
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Teachers’ everyday practices are embedded in school contexts in which their teaching autonomy is constrained by rules, moral obligations, physical settings,and official directives. When a curricular revision mandated that programming was to be a part of mathematics in upper secondary education, teachers’ conditions changed. How teachers adapted to the new curriculum and how they navigated the tensions and contradictions that they encountered is in this thesis analyzed in terms of teachers’ tactics and policy strategies. The overall goal of the investigation is to contribute to a critical understanding of how mathematics teachers integrate programming in their professional practice and how this integration aligns and diverges from the intentions behind the reform. The empirical material is drawn from nine individual interviews with mathematics teachers that were already proficient in programming. The teachers’ unit plans and other lesson materials featuring programming activities served as a trigger point to delve into further reflections upon their own professional practices. To complete the scene, the policy documents were also examined. These included the mathematics curriculum, as well as related official documents and a collection of institutionally sanctioned programming exercises and demonstrations. Two tactical approaches were made apparent when mathematics teachers began to integrate computer programming in their subject: Dual teaching and Interspersed programming. The teacher’s use of dual teaching practices or interspersed programming are tactics shaped by and in response to the conditions of the new curriculum and their own preferences and views on student learning. These two tactics disclose different ontological commitments in relation to the strategies dictated by the curriculum and reflect a cardinal distinction between planning mathematics activities with elements of programming and planning programming activities with elements of mathematics. Of relevance for teachers and curriculum designers is the understanding of (a) how the notion of programming and mathematics as separate subjects oversimplifies teachers’ actual integration practices, and (b) how the curricular choices made by policy can shape the teaching tactics adopted by educators.
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Dobbins, Michael. "Comparing higher education policies in central and eastern Europe : to converge or not to converge? = Vergleichende Hochschulpolitik in Mittel- und Osteuropa /." Konstanz, 2008. http://opac.nebis.ch/cgi-bin/showAbstract.pl?sys=000256363.
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Marmé, Michael. "Suzhou : where the goods of all the provinces converge /." Stanford (Calif.) : Stanford University press, 2005. http://catalogue.bnf.fr/ark:/12148/cb399269146.
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Krause, Benjamin A. 1985. "Everything that Rises Must Converge: For Piano and Orchestra." Thesis, University of Oregon, 2010. http://hdl.handle.net/1794/10734.
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1 score (ix, 83 p.) A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number.Everything That Rises Must Converge is a work for piano and orchestra in one movement. It is structured in three main sections preceded by an introduction, which resembles a traditional three-movement concerto reduced to one movement. Since all of the sections explore a common musical thread, it has a feeling of "stream-ofconsciousness" and free association that suggest genres such as the rhapsody and symphonic tone poem. The thematic motto that begins the piece returns only at points of important formal delineations and is not presented by the piano itself until the work's final moments. The composition also utilizes a foreshadowing technique wherein secondary material in one section is revealed as primary in later sections. The piece is titled after a short story by Flannery O'Connor and reflects its evocative imagery through the frequent use of ascending gestures as well as its final convergence of thematic ideas and musical forces.
Committee in Charge: Dr. Robert Kyr, Chair; Dr. David Crumb; Dr. Jack Boss
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Burdett, Thomas C. "Axon Death Pathways Converge on Axed to Promote Axon Disassembly." eScholarship@UMMS, 2017. https://escholarship.umassmed.edu/gsbs_diss/898.
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Axons use a conserved program to actively drive their own destruction after injury. Axon degeneration is present in many neurological disorders and an axon death program could be a major pharmaceutical target to preserve neuronal function. This intrinsic signaling cascade activates pro-degenerative dSarm/Sarm1, rapidly depletes axonal stores of NAD+, and terminates in cytoskeletal breakdown. Conversely, loss of dSarm/Sarm1, maintenance of NAD+ levels or its biosynthetic enzyme Nmnat, result in long-term morphological perseveration of severed axons. Exactly how dSarm/Sarm1 and loss of NAD+ execute axon death remains poorly defined.
We sought to uncover novel regulators of axon death and maintenance by performing a deficiency screen and a forward genetic mutagenesis screen in axotomized Drosophila wing sensory neurons. We identified a BTB domain protein enriched in neurons, we named Axundead (Axed), which is specifically required for axon death. Severed axons harboring loss of function mutations in axed, similar to dSarm mutants, remain preserved for 50 days post axotomy. Spontaneous neurodegeneration induced by activated dSarm or dNmnat depletion are both suppressed in axed mutants, but not in dSarm mutant alleles. Additionally, severed axed mutant axons also expressing activated dSarm or lacking Nmnat are preserved. These results indicate that dSarm acts upstream of dNmnat loss, and both events precede essential Axed function and axon destruction. Thus, the axon death pathway converges on Axed function.
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Burdett, Thomas C. "Axon Death Pathways Converge on Axed to Promote Axon Disassembly." eScholarship@UMMS, 2003. http://escholarship.umassmed.edu/gsbs_diss/898.
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Axons use a conserved program to actively drive their own destruction after injury. Axon degeneration is present in many neurological disorders and an axon death program could be a major pharmaceutical target to preserve neuronal function. This intrinsic signaling cascade activates pro-degenerative dSarm/Sarm1, rapidly depletes axonal stores of NAD+, and terminates in cytoskeletal breakdown. Conversely, loss of dSarm/Sarm1, maintenance of NAD+ levels or its biosynthetic enzyme Nmnat, result in long-term morphological perseveration of severed axons. Exactly how dSarm/Sarm1 and loss of NAD+ execute axon death remains poorly defined.
We sought to uncover novel regulators of axon death and maintenance by performing a deficiency screen and a forward genetic mutagenesis screen in axotomized Drosophila wing sensory neurons. We identified a BTB domain protein enriched in neurons, we named Axundead (Axed), which is specifically required for axon death. Severed axons harboring loss of function mutations in axed, similar to dSarm mutants, remain preserved for 50 days post axotomy. Spontaneous neurodegeneration induced by activated dSarm or dNmnat depletion are both suppressed in axed mutants, but not in dSarm mutant alleles. Additionally, severed axed mutant axons also expressing activated dSarm or lacking Nmnat are preserved. These results indicate that dSarm acts upstream of dNmnat loss, and both events precede essential Axed function and axon destruction. Thus, the axon death pathway converges on Axed function.
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Greer, Jane. "When literacies converge: the personal and political dimensions of reading narrative /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487856906260435.
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Mottley, Kieron. "Experimental evidence that group foragers can converge on predicted producer-scrounger equilibria." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ39069.pdf.
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Pettinger, Terry Lynn O'Brien. "Where Intellect and Intuition Converge: Epistemological Errancies in the Poetry of Jorie Graham." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/31158.
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Over the past two decades, American poet Jorie Graham has composed six books of poems. Graham struggles to understand how we make sense of the world through thinking grounded in the logical operations of reason and through thinking that operates as more of a detached wandering that enables direct experiential participation in the present moment-modes of thought occasionally differentiated as "intellect" and "intuition." Throughout her work, Graham repeatedly experiments with ways to "frustrate" the intellect in order for intuition to wander over an idea while at the same time she relies on the intellect to rescue the mind from directionless wandering. In her early poetry Graham explores ways of defining and describing what it feels like to think. Later, she enacts thinking within the lines of her poems, sometimes allegorizing the operation of the intellect and intuition and sometimes provoking readers into an experience of one particular way of thinking through the act of reading.
This study examines Graham's various successes and failures as she struggles to discover "blossoming" moments of balance between the controlling intellect and the wandering intuition. Beginning with the origins of this line of thinking in Graham's early work, this study traces the poet's path of development through each book of poems in order to demonstrate the back and forth momentum shifts of intellect giving way to intuition and intuition being organized by rational thought. Through her epistemological errancies, her wanderings within and without ways of knowing, Graham discovers "blossoming" moments of wholeness where both modes of thought meet "in solution, unsolved."Master of Arts
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Qian, Yue. "Mate Selection in America:Do Spouses’ Incomes Converge When the Wife Has More Education?" The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1460461118.
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Smigiel, Jacob. "ONCOSTATIN M & TRANSFORMING GROWTH FACTOR SIGNALING CONVERGE TO REGULATE CANCER CELL PLASTICITY." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case152891618991579.
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Yasuda(Yoshiki), Sayaka. "Ras and calcium signaling pathways converge at Raf1 via the Shoc2 scaffold protein." Kyoto University, 2011. http://hdl.handle.net/2433/142105.
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Ivanova, Tsvetomira Georgieva 1978. "The DNA damage and the DNA synthesis checkpoints converge at the MBF transcription factor." Doctoral thesis, Universitat Pompeu Fabra, 2012. http://hdl.handle.net/10803/116932.
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DNA damage is an ongoing threat to both the ability of the cell to faithfully transmit genetic information to its offspring as well as to its own survival. In order to maintain genomic integrity, eukaryotes have developed a highly conserved mechanism to detect, signal and repair damage in DNA, known as the DNA damage response (DDR). In fission yeast the two DDR pathways converge at the regulation of single transcriptional factor complex (MBF) resulting in opposite directions. We have shown that when the DNA-synthesis checkpoint is activated, Max1 is phosphorylated by Cds1 resulting in the abrogation of its binding to MBF. As a consequence, MBF-dependent transcription is maintained active until cells are able to overcome the replication challenge. In contrast, upon DNA damage, Chk1 the effector kinase of DNA damage checkpoint is activated and blocks the cell cycle progression, inducing DNA repair and repressing the MBF dependent transcription. We have revealed that Cdc10 is the target of the DNA-damage checkpoint and when cells are treated with MMS or are exposed to IR, Chk1 phosphorylates Cdc10 inducing the exit of MBF from chromatin. The consequence is that under these conditions, MBF-dependent transcription is repressed. Thus, Max1 and Cdc10 couple normal cell cycle regulation and the DNA-synthesis and DNA-damage checkpoints into MBF.
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Batlle, Ana. "Regulation of BCL6:p38 MAPK signalling and CTCF transcriptional regulation converge at exon 1." Thesis, Imperial College London, 2010. http://hdl.handle.net/10044/1/6093.
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BCL6 is a zinc finger transcriptional repressor, which is highly expressed in germinal centre B-cells, and is essential for germinal centre formation and T-dependent antibody responses. Deregulated BCL6 expression is associated with certain non- Hodgkin’s lymphomas. High expression is observed in breast cancer. Tight lineage and temporal regulation of BCL6 is, therefore, required for normal immunity and abnormal regulation occurs in cancer. Regulatory mechanisms have been analysed in two settings. Firstly, BCL6 is strongly induced by the tyrosine kinase inhibitor, Imatinib, in chronic myeloid leukaemia lymphoid blast crisis cell lines, and this effect was used in order to study the effects of phospho-protein signalling on BCL6 expression and a major finding is that p38 MAPK induced BCL6. Also, p38 is, at least in part, responsible for BCL6 expression in basal conditions in the germinal centre representative Burkitt’s lymphoma cell lines and that qualitatively different CD40 stimuli can either induce or repress BCL6 expression. Luciferase assays showed that p38 acts at a 300bp sequence immediately 5’ of exon 1, and probably also at more distal sequences. Overall it appears that the balance between positive and negative regulatory controls BCL6 expression with inhibitory signalling pathways being predominant in most circumstances. Focusing on BCL6 exon 1, a binding site for the multifunctional regulator CTCF was identified. CTCF interacts in vitro and in vivo with this sequence. Reduced expression of CTCF in germinal centre cells caused a moderate reduction of BCL6 expression. Finally, although no clear differences were observed in the methylation status of the CTCF binding site on exon 1, a significant enrichment of active histone modifications at this site was observed in BCL6 expressing cells, suggesting that CTCF may have a role in the epigenetic regulation of BCL6.
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Zhang, Yuyan Ernest. "Examining media convergence does it also converge good journalism, economic synergies, and competitive advantages /." Diss., Columbia, Mo. : University of Missouri-Columbia, 2008. http://hdl.handle.net/10355/5603.
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Thesis (Ph. D.)--University of Missouri-Columbia, 2008.The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on June 18, 2009) Vita. Includes bibliographical references.
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Iwersen, Maria Helena Negrao. "Shape and face of good and evil in Flannery O'Connor's Everything that rises must converge." reponame:Repositório Institucional da UFPR, 2010. http://hdl.handle.net/1884/23876.
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Resumo: Everything That Rises Must Converge de Flannery O'Connor foi publicado em 1965, ano posterior â sua morte. Embora-esta dissertação discuta como o título - extraído de uma afirmação de Teillard de Chardin - aplica-se -às nove histórias da coleção, seu principal objetivo é mostrar, através de exemplos tirados do texto, como o bem e o mal se manifestam em cada história. Esta análise textual baseia-se num sistema gradativo das virtudes e dos vícios (os sete pecados capitais) desenvolvido pelo teólogo e erudito medieval Grosseteste. A Parte I apresenta uma biografia, amplamente baseada nas cartas de Miss O'Connor publicadas recentemente, e uma perspectiva global da polêmica excessivamente acirrada à sua obra duradoura. As feições principais de sua arte são discutidas aqui: seu enfoque - como escritora católica - do sul protestante, o uso do grotesco, seu pendor para a violência, seu conceito de mal e de graça, sua falta de sentimento, e sua aparente falta de compaixão e de senso de beleza. A Parte II considera o conceito de mal de Miss O'Connor (tanto quanto de Teillard) e sua magua com uma sociedade tecnológica complacente que despreza os valores espirituais. No âmago da dissertação, a Parte III oferece múltiplos exemplos das formas do bem e do mal, como também do imagismo, na sinopse de cada história, e a Parte IV examina os motivos - o mal, o grotesco e a graça redentora. A Parte V discute a visão de Miss O1 Connor e o modo com que ela empregou o choque e o riso para contrapor ao torpor espiritual e para conscientizar o leitor de que o demoníaco pode levar ao sagrado. Escritora admiravelmente talentosa, com humor selvagem, ela odiava o mal, escarnecia dos intelectuais bombásticos, acreditava nas possibilidades da salvação sempiterna - e conservou até o fim um maravilhoso sentido e respeito pelo mistério.
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Lam, Hester. "Why does the U.S. Continue to Use GAAP and Will it Ever Converge to IFRS?" Scholarship @ Claremont, 2015. http://scholarship.claremont.edu/cmc_theses/1066.
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The United States has a long history of doing things differently than other countries. Its accounting standards are no different; to date, it continues to use its own Generally Accepted Accounting Principles and have yet to converge to the International Financial Reporting Standards ("IFRS") as set by the International Accounting Standards Board. In 2008, the U.S. Securities and Exchange Commission ("SEC") Chairman Christopher Cox published a press release in which the SEC published for public comment a roadmap towards convergence by 2014. However, in subsequent years, Memorandum of Understandings published by the IASB and the United States' Financial Accounting Standards Boards ("FASB") pushed back the date of implementation at each publication. As a result, the convergence efforts have been stalling greatly.
It is very unlikely that the U.S. will ever completely converge to IFRS as the financial costs and obstacles to convergence are not insignificant. Not only will the costs of implication be great, but also the costs of training and education of auditors and accountants. It is not feasible for the U.S. to converge with IFRS in the near future, as the benefits most countries obtain through convergence such as increased quality of financial statements will not be realized. As such, this paper seeks to prove why IFRS convergence will not be realized in the United States.
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Alexander, Diane Elizabeth. "Technical Communication, Medical Writing and I.T. Converge: An Internship at Cincinnati Children's Hospital Medical Center." Miami University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=miami1292436407.
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Luedtke, Dalyn. "Reality Television and the Rhetoric of Play: What Happens When Old and New Media Converge." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/223341.
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Little attention has been paid to the rhetorical practices and implications of reality television within the field of rhetoric and composition. In fact, it is easy to argue that television as a whole has been largely ignored, leaving the research to scholars in media, communication, and cultural studies. However, the convergence of media has raised questions about the nature of the viewing practices of contemporary television audiences--specifically regarding how to reconcile the complex texts audiences produce in response to television with the passive model of consumption that has defined it. Game scholars, as well as scholars of computers and composition, have theorized the powerful rhetorical potential of play with regard to video games, but they have yet to consider the way play has been invoked in other more traditional media. Therefore, this dissertation seeks to connect old media and new by considering how television, specifically reality TV, engages audiences across platforms, how audiences extend their own experience with reality programs, and what this might mean to rhetoric and composition scholars about contemporary literacy practices. In this dissertation, I argue that reality television has successfully used rhetorics of play and new media technologies to engage audiences within, across, and between programs and their digital environments. Using Survivor as a case study, I analyze the strategies that producers use to invite audiences into the program, specifically focusing on the generic characteristics that instigate play, the program's online presence, and the ways in which viewers respond by producing their own texts such as fantasy Survivor games, blogs, discussion forums, and video mash-ups. By doing so, I demonstrate how reality TV and new media technology have renegotiated the relationship among producers, audiences, and texts. Significantly, viewers become active participants with, as well as producers of, texts. Additionally, I use this research to study how play encourages self-motivated writing, community building, and the possible uses for "serious play" within the composition classroom.
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Albright, Andrew S. "Where corridors converge : linking multi-modal transportation networks to land use and urban design in Indianapolis." Virtual Press, 2003. http://liblink.bsu.edu/uhtbin/catkey/1260492.
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This study reveals the potential for urban design where multi-modal transportation corridors intersect. An overarching challenge to urban design and planning relates to the impact mobility has on the social, environmental, and economic health of America's cities, including Indianapolis. In response to this challenge, this study explores transit-oriented development, a strategy based on the principle that transportation and land use are closely related and should therefore be planned in coordination, as a viable alternative to current practices that force transportation to follow rather than inspire and enhance development.Two primary phases constitute the study. The first introduces the principles of transit-oriented development. This phase also highlights some of the urban design opportunities that stem from this alternative strategy and examines and evaluates how effectively transit-oriented development principles work in various American cities.The second phase explores how these principles may be applied to the city of Indianapolis and demonstrates how one site within the city can serve as a model for coordinating various modes of transportation with adjacent land use. This phase consists of selecting a demonstration site within the city, researching the existing and historical make-up of the site, and developing a master plan for the site. The master plan is based on two primary goals-to create a safe and efficient transportation node and to create a unique and vibrant urban "place" that functions as both an origin and a destination.Department of Landscape Architecture
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Fabricio, Loayza-Puch. "Hypoxia and RAS-signaling pathways converge on, and cooperatively downregulate, the RECK tumor-suppressor protein through microRNAs." Kyoto University, 2010. http://hdl.handle.net/2433/120594.
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Canullo, Cecilia. "Validazione di una metodologia per la simulazione della cavitazione in iniettori per applicazioni automobilistiche." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.
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Al giorno d’oggi, il primo obiettivo dell’industria automotive è quello di ridurre il consumo di carburante e migliorare la qualità del processo di combustione, al fine di soddisfare i limiti di emissioni imposti, senza penalizzare le performance dei motori. In questo scenario, il comportamento dinamico dello spray gioca un ruolo cruciale, ed è risaputo che esso dipenda anche dal processo di cavitazione all’interno di ogni singolo foro iniettore. L’appropriata predizione dello sviluppo di tale fenomeno è fondamentale per comprendere e controllare le caratteristiche delle spray nei canali iniettori e consentire una più accurata progettazione degli iniettori. In questo meccanismo, le simulazioni CFD ricoprono un ruolo di grande importanza, a causa delle dimensioni ridotte caratteristiche dei fori iniettori. Questi infatti non risultano spesso adatti ad un’analisi sperimentale dettagliata e precisa, e nel caso lo fossero, la valutazione è limitata a pochi casi, essendo le attività sperimentali complesse ed onerose. L’analisi computazionale presenta quindi vantaggi come una sostanziale riduzione del tempo e dei costi impiegati, non richiedendo infatti la costruzione e l’utilizzo di impianti appositi o prototipi.
Lo scopo principale di questo progetto consiste nella validazione di un codice CFD capace di modellare la cavitazione, al fine di applicarlo successivamente ad un iniettore reale. Tale modello è stato validato tramite confronto con dati sperimentali su un flusso cavitante attraverso un ugello ideale. Tra tutti i software commerciali disponibili, è stato scelto CONVERGE poiché innovativo nella generazione automatica della griglia e dettagliato nell’analisi chimica, permettendo di gestire geometrie di motori molto complesse. È stato quindi ritenuto appropriato valutare la validità di tale codice nella modellazione della cavitazione, poiché potrebbe dimostrarsi rilevante nello studio futuro dei motori a combustione interna.
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Júnior, Lourival da Cruz Galvão. "O futuro hoje: a formação em radiojornalismo na era da convergência das mídias." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/27/27154/tde-18052015-163058/.
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\"O futuro hoje: a formação em Radiojornalismo na era da convergência das mídias\" surge da emergência de um novo pensar sobre o processo de formação dos estudantes universitários que, no atual contexto, são preparados para atuar como jornalistas em emissoras de rádio que ultrapassaram a fronteira das ondas eletromagnéticas e se estabeleceram também na internet, onde disponibilizam conteúdos sonoros que convergem com outras expressividades midiáticas. Este trabalho, que é apoiado na interface Comunicação/Educação, assumiu o propósito de analisar a ocorrência, no processo de formação em Radiojornalismo, de ações que vinculem os conteúdos teórico/práticos ministrados à convergência das mídias. O distanciamento entre a formação e a realidade surgiu como hipótese, bem como a possível falta de atividades relacionando o Radiojornalismo e a Convergência das Mídias. A metodologia baseou-se em pesquisa bibliográfica, entrevistas e estudo de casos que verificou a formação em Radiojornalismo nos cursos de Jornalismo oferecidos pelas principais universidades do Brasil e de Portugal, sendo elas, respectivamente: o Departamento de Jornalismo e Editoração da Escola de Comunicações e Artes da Universidade de São Paulo (CJE - ECA/USP) e a Faculdade de Ciências Sociais e Humanas da Universidade Nova de Lisboa (FCSH/UNL). Após empreender as verificações propostas, este estudo constatou que a convergência das mídias não aparece integrada às ações teórico/práticas promovidas pelas disciplinas, no Brasil e em Portugal. Entretanto ficou evidente, nos processos de formação, a ocorrência das convergências tecnológicas e de conteúdos. Conclui-se que tal constatação permite aproximar, de forma parcial, os alunos da realidade na qual o Radiojornalismo mantém-se estabelecido. De outro lado, a falta de propostas que explorem a convergência das mídias nas disciplinas caracterizou-se como desfavorável à formação por não possibilitar, aos estudantes, conhecimento pleno desse fenômeno potencializado pela presença e integração dos meios de comunicação no ambiente digital\"The future today: the Radiojournalism education in the age medias\' convergence\" arises from the emergence of a new think about the training process of students university, in the current context, they are prepared to act as journalists in radio stations that have crossed the border of electromagnetic waves and settled also on the Internet, which offer audio content that converge with other media expressivity. This work, which is supported in Communication/Education interface, assumed the purpose of analyzing the occurrence, in the process of training in Radiojournalism, actions that link the theoretical/practical content ministered by medias\' converge. The distancing between the training and the reality came as a hypothesis and the possible lack of activities relating the Radiojournalism and the medias\' convergence. The methodology was based on a literature review, interviews and case studies, that verified training in Radiojournalism in journalism courses offered by leading universities in Brazil and Portugal, which were, respectively: the Departamento de Jornalismo e Editoração da Escola de Comunicações e Artes da Universidade de São Paulo (CJE - ECA/USP) and the Faculdade de Ciências Sociais e Humanas da Universidade Nova de Lisboa (FCSH/UNL). After undertake verification proposed, this study found that the media\'s convergence don\'t appear integrated with theoretical actions / promoted practices by the disciplines in Brazil and Portugal. Meantime it has become evident, in the training processes, the occurrence of technological convergence and content. It was concluded that such a finding allows enlarging in part the students the reality in which the Radio Journalism remains established. On the other hand, the lack of proposals exploiting the medias\' convergence of in the subjects characterized as unfavorable to the formation by don\'t provide to students, knowledge of this phenomenon enhanced by the presence and integration of media in the digital environment.
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Delay, Charlotte. "Fundamental aspects of alpha-synuclein, synphylin-1 and tau in neurodegenerative proteinopathies converge within lipid rafts : from yeast to mice models." Lille 2, 2010. http://www.theses.fr/2010LIL2S003.
Full textAbstract:
Les maladies neurodégénératives représentent un fardeau humain, social et économique, qui ne cesse de croître en raison du vieillissement de la population. Les études portant sur les protéinopathies, telles que la maladie d’Alzheimer ainsi que la maladie de Parkinson, se sont principalement orienté sur l’étude des effets délétères de l’agrégation de protéines comme l’ - Synucléine, la protéine Tau et le peptide A. Par contre, peu d’efforts ont été consacrés à la compréhension de la propagation systématique de ces pathologies d’une région du cerveau à une autre. Dans ce travail, nous nous sommes intéressés aux relations entre les protéines qui s’agrègent et les microdomaines de la membrane plasmique impliqués dans l’endo- et l’exo-cytose. Les radeaux lipidiques sont des microdomaines impliqués dans de nombreux systèmes de communication cellulaire tels que l’endocytose et l’exocytose. Nous avons identifié, à la fois dans des modèles de levures et dans des modèles eucaryotes plus complexes comme des cultures de neurones murins, que l’ -Synucléine, la Synphiline-1 ainsi que la protéine Tau sont des protéines qui se lient aux radeaux lipidiques. Il est possible que la propagation de la pathologie de ces maladies dépende de systèmes de communication cellulaire impliquant des radeaux lipidiques. Dans ce contexte nous avons étudié l’effet de la Synphiline-1 sur la capacité de l’ -Synucléine à se lier à ces domaines et nous avons identifié les séquences peptidiques impliquées dans la liaison de la protéine Tau aux radeaux lipidiques. En parallèle nous avons étudié l’effet de la Synphiline-1 sur la biologie de l’ -Synucléine, et avons observé que la Synphiline-1 augmentait la toxicité de l’ -Synucléine dans un modèle de levure de la maladie de Parkinson. Nous avons aussi démontré que la Synphiline-1 augmentait la formation d’inclusions d' -synucléine ainsi que sa phosphorylation. Nous en avons conclu que la Synphiline-1 aggravait les propriétés pathologiques de l’ -Synucléine. Finalement, en relation avec ces résultats, les interactions protéine-lipide ainsi que le trafic vésiculaire peuvent être analysés dans des modèles de levure. Nous avons, à l’aide de mutants, étudié à quels niveaux de l’endocytose, l’ -Synucléine acquière sa toxicité. De cette façon, nous avons démontré que la toxicité de l’ -Synucléine est atténuée lors du blocage des évènements précoces de l’endocytose et lors du blocage du recyclage vésiculaire. Ces résultats démontrent que l’ -Synucléine acquière sa toxicité au cours de l’endocytose précoce ainsi que lors du récyclage vésiculaire. En perspective, cette étude pourrait être étendue à la Synphiline-1 et à la protéine Tau xv pour étudier de quelle façon le trafic vésiculaire pourrait être impliqué dans la propagation des protéines agrégées dans les maladies neurodégénérativesDoor de steeds groeiende vergrijzing, vormen neurodegeneratieve aandoeningen een belangrijk sociaal en economisch probleem. De meeste studies georiënteerd op neurodegeneratieve proteinopathiën, zoals de ziekte van Alzheimer en de ziekte van Parkinson hebben zich vooral gericht op de nefaste effecten van aggregatieve eiwitten zoals -Synucleïne, zijn interactie partner Synphiline-1, Tau en A. Veel minder werk werd geleverd voor het begrijpen van de systematische en pathologische spreiding van deze aandoeningen van de ene regio naar de andere in het brein. In deze doctoraatsthesis hebben wij gezocht naar de relaties tussen aggregerende eiwitten en plasmamembraan gelokaliseerde micro-domeinen betrokken in endo- en exocytose. Lipid rafts, zijn gespecialiseerde membraan domeinen betrokken in verschillende cel-cel communicatie wegen met inbegrip van endo- en exocytose. Wij hebben, in gist en hogere eukaryote modelsystemen, waaronder primaire muis celculturen, aangetoond dat de eiwitten - Synucleïne, Synphiline-1 en Tau, lipid raft interagerende eiwitten zijn. Een mogelijke hypothese is dat de pathologische verspreiding van neurodegeneratieve proteinopathiën via lipid raft afhankelijke wegen verloopt. In deze context hebben we het effect van Synphiline-1 op de - Synucleïne – lipid raft interactie onderzocht en hebben we de eiwit sequenties van Tau betrokken in lipid raft interactie geïdentificeerd. Daarnaast, hebben we het effect van Synphiline-1 op biochemische eigenschappen van - Synucleïne bestudeerd. We hebben aangetoond dat Synphiline-1 de toxiciteit van -Synucleïne versterkt in een gistmodel voor Parkinson. We hebben ook aangetoond dat Synphiline-1 expressie zowel inclusievorming als fosforylatie van -Synucleïne verhoogt. Hieruit konden we concluderen dat Synphiline-1 de toxische eigenschappen van -Synucleïne versterkt. Gebruik makend van onze gistmodellen werden tot slot ook vesiculaire transportsystemen onderzocht en werd nagegaan op welk moment gedurende de endocytose -Synucleïne zijn toxiciteit verkrijgt. We hebben geobserveerd dat wanneer endocytose vroeg wordt verhinderd of wanneer vesiculaire recyclage wordt geblockeerd, de -Synucleïne toxiciteit vermindert. Dit betekent dat -Synucleïne zijn toxiciteit verwerft tijdens vroege endocytose en recyclage. In de toekomst kunnen dergelijke experimenten ook uitgevoerd worden met Synphiline-1 en Tau om zo het effect van vesiculair transport op het verspreiden van aggregerende eiwitten in neurodegeneratieve aandoeningen verder te bestuderen
Neurodegeneration is an increasing problem due to the eldering population. Studies on neurodegenerative proteinopathies, such as Alzheimer's disease and Parkinson's disease have mainly been focused in the deleterious effects due to the aggregating proteins -Synuclein, Aβ and Tau. However, much less effort has been put in understanding the systematic and pathological spreading of the diseases from one brain region to the other. In the present work, we aim to investigate relationships between aggregating proteins and microdomains of the plasma membrane involved in endo-/exo-cytosis. Lipid rafts are specialized membrane microdomains implicated in different cell-cell communication pathways such as endocytosis and exocytosis. In both yeast models and higher eukaryotic cells such as murine neuronal cell cultures, we identified -Synuclein, the -Synuclein interaction partner Synphilin-1 and Tau as lipid raft interacting proteins. It might be that the pathological spreading of the diseases goes through lipid raft dependent cell-cell communication pathways. In this context, we investigated the effect of Synphilin-1 on the - Synuclein-lipid raft interaction and identified the amino-acid sequences of tau implicated in the binding of tau to these microdomains. In parallel, we investigated the effect of Synphilin-1 on the -Synuclein biology and observed that Synphilin-1 increased -Synuclein toxicity in a yeast Parkinson’s disease model. We have also shown that Synphilin-1 expression increases both inclusion formation and phosphorylation of -Synuclein. We therefore concluded that Synphilin-1 increases the pathological properties of -Synuclein. Finally, in the scope of these data, protein-lipid interactions and vesicle trafficking may be analyzed in yeast models. Using yeast endocytosis mutants, we have investigated, at which point during endocytosis, -Synuclein acquired its toxicity. We have thereby identified that the toxicity due to -Synuclein expression in yeast was alleviated upon blockage of early endocytotic events as well as upon blockage of vesicle recycling. It means that -Synuclein acquires its toxicity upon endocytosis and recycling. In perspective, such work may be developed with Synphilin-1 and Tau proteins to further investigate how vesicle trafficking may be involved in the spreading of aggregating proteins in neurodegenerative disorders
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Armos, Saulo. "Mensuração do capital intelectual : estudo de caso na empresa Converge-Tecnologias de Gestão, empresa de prestação de serviços em consultoria e treinamento." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2003. http://hdl.handle.net/10183/5568.
Full textAbstract:
A presente pesquisa resultou na definição de um modelo de mensuração do Capital Intelectual, a partir do método proposto pelo Skandia Navigator (Edvinsson e Malone, 1998), da empresa sueca homônima do ramo de seguros e serviços financeiros, que de forma pioneira publicou seu Relatório de Capital Intelectual em 1995. Apresentado sob a forma de estudo de caso, o trabalho foi efetuado a partir dos dados da Converge - Tecnologias de Gestão, empresa de prestação de serviços de consultoria e treinamento. As informações utilizadas no modelo estudado foram estrategicamente selecionadas do Balanced Scorecard implementado na empresa, sendo consideradas como os elementos e fatores geradores de seu Capital Intelectual. No caso estudado, a equação de mensuração do Capital Intelectual foi adaptada com a introdução de pesos para os indicadores de desempenho, evidenciando a importância de cada um deles para a consecução das estratégias do negócio, segundo a prioridade definida pela alta direção, na busca de satisfazer as expectativas e necessidades de todas as partes interessadas.
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De, Villiers Hendrika B. "Converge : the adaptive reuse of the Sunnyside galleries as a point of cultural convergence for the purpose of fostering social cohesion within interior spaces." Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/45299.
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The dissertation sits within the theoretical context of social cohesion
theory; aspects of space that fosters social cohesion as well as the manipulation
of the public market typology are investigated as research
questions.
The Sunnyside area in Tshwane is the physical context within which the
design project is located and is observed as being in a state of social
divergence.
The design issue to be addressed is outlined in the following statement:
The adaptive reuse of the Sunnyside Galleries building by introducing
a public food market, restaurant and drinks bar to create opportunities
for casual encounters and cultural exchange for the purpose of
fostering social cohesion within space.Dissertation (MInt(Prof))--University of Pretoria, 2014.
Architecture
MInt(Prof)
Unrestricted
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Campofredano, Enzo. "Implementazione e validazione di un modello di accensione per motori a combustione interna." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13115/.
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Nell'ambito dei motori ad accensione comandata, la comprensione del processo di accensione e delle prime fasi di sviluppo del kernel è di primaria importanza per lo studio dell'intero processo di combustione, dal momento che questi determinano lo sviluppo successivo del fronte di fiamma. Dal punto di vista fisico, l'accensione coinvolge un vasto numero di fenomeni di natura molto complessa, come processi di ionizzazione e passaggio di corrente nei gas: molti di questi avvengono con tempi caratteristici che ne impediscono la simulazione tramite le attuali tecniche CFD. Si rende pertanto necessario sviluppare modelli semplificati che possano descrivere correttamente il fenomeno, a fronte di tempi di calcolo brevi. In quest'ottica, il presente lavoro di tesi punta a fornire una descrizione accurata degli aspetti fisici dell'accensione, cercando di metterne in evidenza gli aspetti principali e le criticità. A questa prima parte di carattere prettamente teorico, segue la presentazione del modello di accensione sviluppato presso il DIN dell'Università di Bologna dal Prof. Bianche e dall'Ing. Falfari e la relativa implementazione tramite il nuovo codice CONVERGE CFD: la validazione è infine condotta riproducendo un caso test ben noto il letteratura, che mostrerà un buon accordo tra valori numerici e sperimentali a conferma della validità del modello.
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Altobelli, Simone. "Modellistica di accensione per candele ad arco elettrico in motori a combustione interna alternativi." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
Find full textAbstract:
Nel panorama mondiale di contenimento delle emissioni inquinanti in atmosfera é divenuto sempre più importante limitare la parte derivante dai motori a combustione interna: l'utilizzo di motori GDI a carica stratificata e di ricircolo dei
gas di scarico (EGR) sono esempi di tecnologie pensate proprio in tale ottica.
Sia la presenza di un ambiente magro che di EGR nel cilindro, come anche l'aumento della pressione nel cilindro per l'incremento della pressione di sovralimentazione o del rapporto di compressione, hanno lo svantaggio di limitare
la velocità di combustione e rendere più sfavorevoli le condizioni di accensione della miscela; in questo scenario diviene di fondamentale importanza il miglioramento dei
sistemi di accensione, la creazione di modelli volti a simularli e la comprensione dei fenomeni che ne stanno alla base.
Il seguente lavoro di tesi si inserisce proprio in questo contesto, indagando le varie fasi di cui si compone il fenomeno dell'accensione e le relazioni che legano le variabili di interesse fisico, verificate sulla base di evidenze sperimentali.
Successivamente vengono analizzati i principali modelli d'accensione che sono stati proposti e implementati in codici computazionali fluidodinamici; l'analisi mette in luce le
differenze, i punti di forza e le semplificazioni introdotte in ognuno di essi, in modo da poterli valutare criticamente.
La suddetta analisi é anche utile per introdurre il modello frutto del lavoro del gruppo di ricerca dell'Università di Bologna; ci si concentra particolarmente su quest'ultimo poiché un obiettivo di questo lavoro di tesi é stato proprio l'implementazione e l'utilizzo del modello in un codice fluidodinamico tridimensionale quale CONVERGE CFD.
L'implementazione é stata poi validata attraverso simulazioni su una geometria reale di un motore a combustione interna ad elevate prestazioni, confrontando i risultati ottenuti con il nuovo modello rispetto ai dati sperimentali sulla combustione.
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Schweizer, Philipp. "Convergence or Divergence "The West and the Rest" in the Eye of Globalization : Can globalization cause Western and non-Western civilizations to converge economically and politically? /." St. Gallen, 2005. http://www.biblio.unisg.ch/org/biblio/edoc.nsf/wwwDisplayIdentifier/01654078001/$FILE/01654078001.pdf.
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Locken, Kristopher Michael. "Super hypersensitivity to hygromycin B (S-HHY) gene functions converge at the trans-golgi and late endosome interface have a role in tor1p location to the vacuole." Thesis, California State University, Long Beach, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1527392.
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The vacuole in Saccharomyces cerevisiae serves as a model for the mammalian lysosome. In a genome wide screen for mutants with severe growth hypersensitivity to hygromycin B, our lab identified 14 HHY genes. Each of the hhy mutants is defective in vacuolar trafficking and/or function and also sensitive to rapamycin and caffeine, suggesting a compromised target of rapamycin (TOR) kinase pathway. My research divides the hhy mutants into two groups based on quantitative growth analyses in the presence of hygromycin B. (1) a super affected group (s-hhy's) and (2) a dose-dependent group (d-hhy's). The s-HHY genes include CHC1, DRS2, SAC1, VPS1, VPS34, VPS45, VPS52, and VPS54. Evaluation of the known functions of s-HHY gene products reveals vesicular trafficking function at the trans-Golgi and late endosome interface to be a common factor. In yeast, the TORC1 complex localizes to the vacuole. Because a compromised TORC1 complex signaling is suggested in hhy mutant strains due to their caffeine or rapamycin sensitivity, I hypothesized that compromised TORC1 signaling in HHY's may be due to defects in the vacuolar localization of Tor1 kinase. To assess Tor1 kinase localization, we utilized a strain expressing endogenously tagged Tor1-GFP and assayed localization to the vacuolar membrane in each of the s-hhy mutants using confocal microscopy. In wild-type cells, Tor1-GFP co-localizes with the vacuolar membrane marker FM4-64 while s-hhy deletion strains fail to localize Tor1-GFP to the vacuolar membrane when treated with hygromycin B. Our results implicate that Tor1p is transported to the vacuole membrane via the late endosome (CPY pathway) and not the ALP (Vam3) pathway. Additionally, s-hhy mutants are unable to recover growth after a 4-hour treatment with hygromycin B, similar to EG0 mutants, which fail to exit from G0 after treatment with the TORC1 inhibiting drug rapamycin. Based on our data, we propose a model in which the s-HHY gene functions in vesicular trafficking at the trans-Golgi/late endosome interface are involved in recruitment and subsequent transport of Tor1p to the vacuolar membrane, and that interface is hypersensitive to hygromycin B. We also propose that Tor1 kinase localization at the vacuole is essential for its cell cycle regulatory function.
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Metawe, Mohamed [Verfasser], and Detlef [Akademischer Betreuer] Junker. "The Middle East in Transatlantic Politics 2003 – 2009. Why European and American Policies Towards Middle East Issues Converge and Diverge Despite Agreement on Common Goals / Mohamed Metawe ; Betreuer: Detlef Junker." Heidelberg : Universitätsbibliothek Heidelberg, 2011. http://d-nb.info/1179229436/34.
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Back, Aurore. "Etude théorique et numérique des équations de Vlasov-Maxwell dans le formalisme covariant." Phd thesis, Université de Strasbourg, 2011. http://tel.archives-ouvertes.fr/tel-00637516.
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Un nouvel point de vue est proposé pour la simulation des plasmas utilisant le modèle cinétique qui couple les équations de Vlasov pour la distribution des particules et les équations de Maxwell pour la contribution des champs électromagnétique. On part du principe que les équations de la Physique sont des objets mathématiques qui mettent en relation des objets géométriques. Afin de conserver les propriètés géométriques des différents objets intervenant dans une équation, on utilise, pour l'étude théorique et numérique, la géométrie différentielle. Il s'avère que toutes les équations de la Physique peuvent s'écrire à l'aide des formes différentielles et que sous ce point de vue celles-ci sont indépendantes du choix des coordonnées. On propose alors une discrétisation des formes différentielles en utilisant les B-splines comme fonctions d'interpolation. Afin d'être cohérent avec la théorie, on proposera également une discrétisation des différentes opérations de la géométrie différentielle agissant sur les formes différentielles. On teste notre schéma tout d'abord sur les équations de Maxwell avec plusieurs conditions aux bords et puisque ce schéma numérique obtenu est indépendant du système de coordonnées, on le teste également lorsque l'on effectue un changement de coordonnées. Enfin, on applique la même méthode sur les équations de Vlasov-Poisson 1D et on propose plusieurs schémas numériques.
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山辺, 省太. "不可解な黒さと虚構の力学 : Flannery O’Connor の “The Artificial Nigger” と “Everything That Rises Must Converge” の差異と終りの意識." 名古屋大学国際言語文化研究科国際多元文化専攻, 2002. http://hdl.handle.net/2237/8372.
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Knight, Julian Francis. "Folio of original compositions : Three to one; Earth to Air: Nico's piece; Four Frames; The Poles converge; Scenes of Sainte Victoire; Muted landscape; Isle of the Dead; Uncertain calm; 5 miniatures for piano." Thesis, Royal Holloway, University of London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368928.
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Courrier, Nicolas. "Couplage optimisation à convergence partielle et stratégie multiparamétrique en calcul de structures." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLN026/document.
Full textAbstract:
Dans le cadre de calcul des assemblages de structures, les bureaux d'études sont à l'heure actuelle encore limités dans la possibilité de mener des travaux d'optimisation. En effet, la résolution numérique des assemblages nécessite la mise en œuvre de méthodes capables de prendre en compte différents types de non-linéarités (frottement, contact et jeux entre pièces). Le coût de calcul associé à ces méthodes est généralement trop important pour mener une optimisation globale nécessitant un trop grand nombre d'évaluations. Afin de pallier à ce problème, ce travail s'appuie sur une démarche d'optimisation à deux niveaux de modèles. Le premier niveau d'optimisation consiste à la création d'un métamodèle sur lequel est effectué une optimisation globale. Le second niveau d'optimisation consiste à mener à bien une optimisation locale sur le modèle mécanique réel. Cette optimisation locale s'appuie sur les résultats trouvés au premier niveau. Deux outils sont principalement utilisés au cours de cette thèse. Tout d'abord les simulations numériques sont réalisées à l'aide de la méthode LaTIn multiparamétrique qui assure la réduction des temps de calcul associés aux multiples résolutions du problème mécanique. L'autre outil plus largement développé au cours de ce travail s'appuie sur la construction de métamodèles multi-fidélité. En effet, la méthode LaTIn est une méthode de calcul itérative, il est alors possible d'avoir accès à un indicateur d'erreur servant de niveau de convergence pour les différents calculs numériques effectués. La construction de métamodèles multi-fidélité a pour particularité de pouvoir incorporé différentes sources d'informations qui sont dans ce travail dites "totalement convergé" lorsqu'un calcul est effectué à convergence et "partiellement convergé" lorsqu'un calcul est stoppé avant convergence. Différentes méthodes multi-fidélité sont testées dans ce travail sur plusieurs exemples mécaniques afin de déterminer les plus performantes. Deux cas industriels sont également traitésOptimisation strategies on assembly design are often time expensive on industrial case. The main difficulties are due to the non-linearties of the calculation (contact, friction and gap between pieces). The computation cost can be too expensive to lead a global optimization with a large number of evaluation of the mechanical problem.In order to achieve this kind of optimization problems, this work purposes to use a two-levels models optimization strategy. THe first level is defined thanks to the construction of a metamodel which is used to lead a global optimization. On the second level, a local optimization is used on the real mechanical model thanks to the results got from the first level.Two main tools are used in this work. The first one is the multiparametric LaTIn method which enables to reduce drastically the computational time for solving several similar mechanical assembly design problems. The other tool is the one which is the most developped in this work is the constrcution of multi-fidelty surrogate models. Indeed, the LaTIn method in an iterative method, so it is possible to define an error indicator which can be used as a level of convergence of the calculation. The construction of multi-fidelity metamodels has for particularity to incorpore several kind of information which are named as "totally converged" if the calculation has been converged and "partially converged" if the calculation has been stopped premarturly.Different multi-fidélity methods have been investigated in this work on several mechnaical examples in the aim to define the most performant. Industrial case test are trated in this thesis.In order to achieve this kind of optimization problems with an acceptable computational time, this work propose to use a two-levels model optimization strategy based on two main tools: (1) the multiparametric strategy based on the LaTIn method that enables to reduce significantly the computational time for solving many similar mechanical assembly problems and (2) a cokriging metamodel built using responses and gradients computed by the mechanical solver on few sets of design parameters. The metamodel provides very inexpensive approximate responses of the objective function and it enables to achieve a global optimisation and to obtain the global optimum. The cokriging metamodel was reviewed in detail using analytical test functions and some mechanical benchmarks. The quality of the approximation and the building cost were compared with classical kriging approach. Moreover, a complete study of the multiparametric strategy was proposed using many mechanical benchmarks included many kinds and numbers of design parameters. The performance in term of computational time of the whole optimisation process was illustrated
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Bieniosek, Matthew (Matthew F. ). "A square root analog to digital converter to optimally convert photonic signals for computed tomography." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62309.
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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (p. 81-82).
The arrival of photons at a given location is a Poisson process with an associated shot noise which rises with the square root of the number of photons received. An analog-to-digital converter (ADC) with a square root transfer function can quantize photonic signals with LSB size kept constant with respect to the photon shot noise. In imaging applications, this can greatly reduce the number of bits needed to characterize a signal compared to a linear ADC without detrimental effects to image quality. Such a device, based on the Analogic MuSIC chip, was designed and tested for the needs of a medical computed tomography (CT) device. The experimental setup increases the MuSIC sampling frequency from 3kHz to 7kHz, while reducing the amount of data necessary for reconstruction. A constant quantization noise to photon shot noise ratio acceptable for CT is maintained by sizing each LSB to be one half the rms noise level. Results show an INL of 2.5 LSB, which is reduced to 0.27 LSB after a correction scheme.
by Matthew Bieniosek.
M.Eng.
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Smith, Chelsea A. "Testing an Interference Competition Hypothesis to Explain the Decline of the Convergent Lady Beetle, Hippodamia convergens (Coleoptera: Coccinellidae), in Ohio." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1339527346.
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Novinsky, Ilana Waingort. "Edith Stein (1891 - 1942) em busca da verdade em tempos sombrios." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/8/8138/tde-29062012-123046/.
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O presente estudo procura compreender Edith Stein (1891-1942), personagem emblemática do século XX, através de uma perspectiva histórica, psicanalítica e de um método hermenêutico. De origem judaica, nascida em Breslau, Prússia, dedicouse aos estudos filosóficos e ao magistério. Foi aluna de E. Husserl e realizou importantes investigações fenomenológicas, em várias áreas. Discriminada por ser mulher e judia, não pôde seguir uma carreira acadêmica, apesar de suas importantes contribuições teóricas. Converteu-se ao catolicismo tornando-se monja carmelita descalça. Foi presa pela polícia nazista e assassinada em Auschwitz, na câmera de gás, em 1942. Beatificada pelo Papa João Paulo II em 1998, tornou-se co-patrona da Europa. Neste trabalho busquei, através de seu idioma pessoal, as raízes que fecundaram o seu pensamento e a maneira como tentou responder às questões cruciais que a habitaram como mulher, filósofa, judia-católica, vivendo a tensão entre o judaísmo e o catolicismo. As principais fontes utilizadas foram sua autobiografia, cartas, obras e escritos diversos, assim como a literatura produzida sobre ela e sua época, além de material iconográfico.The focus of this research is to understand Edith Stein (1891-1942), an iconic XX century figure, using historical and psychoanalytical perspectives as well as an hermeneutical method. From Jewish origin, Stein was born in Breslau, Prussia, studied with E. Husserl and developed important phenomenological investigations, in education, womanhood, philosophy, theology and mystic. However could not be an academic because of discrimination against both women and Jews. Subsequently she converted to Catholicism and even became a Carmelite monk, neither of which was enough to escape persecution of the Nazis. She flew to Holland, but was arrested by the Gestapo, taken to Auschwitz concentration camp in 1942, where her life ended in a gas chamber. She was beatified by Pope John Paul II in 1998. This work examines the roots and influences of her theoretical contributions as well as the way she answered the fundamental human questions that she dealt with during her lifetime as a woman, a philosopher and a Christian-Jew. The main sources are Steins autobiography, letters, writings and other literature dealing with her life and times.
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O'Banion, Joy A. "The Convert as a Social Type: A Critical Assessment of the Snow-Machalek Conversion Typology as Applied to British Mormon Converts." Diss., CLICK HERE for online access, 1988. http://patriot.lib.byu.edu/u?/MTNZ,4313.
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You, Keping Electrical Engineering & Telecommunications Faculty of Engineering UNSW. "A new bidirectional AC-DC converter using matrix converter and Z-source converter topologies." Awarded by:University of New South Wales, 2007. http://handle.unsw.edu.au/1959.4/37450.
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This thesis proposes a new bidirectional three-phase AC-DC power converter using matrix converter and Z-source inverter topologies. Advantages of the AC-DC matrix converter are the inherently controllable power factor, the tight DC voltage regulation, the wide bandwidth with quick response to load variation, the single-stage buck-voltage AC-to-DC power conversion; advantages of the z-source inverter are the increased reliability by allowing the shoot-through between upper and lower power switches of one inverter leg, insensitivity to DC bus voltage due to the extra freedom of controlling DC-link voltage. The proposed Matrix-Z-source converter (MZC) marries up both advantages of AC-DC matrix converter and Z-source inverter. It can achieve voltage-boost DC-AC inversion capable of variable voltage variable frequency (VVVF) AC output; it can achieve voltage-buck AC-DC rectification capable of inherent control over AC current phase angle and DC output regulation with a (VVVF) AC source supply. Both foresaid performance in DC-AC inversion and AC-DC rectification can be implemented in a simple open-loop control manner. Three constraints of VSI, in the bidirectional AC-DC power conversion, are the peak AC voltages are always less than DC-link voltage, closed-loop control has to be employed when DC regulation and/or AC current phase angle control are required, and AC voltage is sensitive to the variation of the DC-link voltage in DC-AC inversion. The voltage-boost inversion and/or voltage-buck rectification of MZC overcomes the first constraint; thus MZC enables the AC machine voltage increased higher than DC-link voltage hence advantages of running AC machine at relatively high voltages are enabled. The direct DC voltage regulation and inherent AC-current-phase-angle control of MZC overcomes the second constraint in an open-loop manner; hence a simplified system design is obtained with sufficient room for the further improvement by closed-loop control schemes. The extra freedom in controlling DC-link voltage of MZC overcomes the third constraint hence a DC source voltage adaptable inverter is obtained. This thesis focuses on the study of the feasibility of the proposed MZC through theoretical analysis and experimental verification. At first, the proposed MZC is conceptually constructed by examining the quadrant operation of AC-DC matrix converter and Z-source inverter. After the examination of the operating principles of both AC-DC matrix converter and Z-source inverter, the configuration of MZC is then proposed. The MZC has two operating modes: DC-AC inversion and AC-DC rectification. Circuit analysis for both operating modes shows that the new topology does not impose critical conflict in circuit design or extra restriction in parameterization. On the contrary, one version of the proposed MZC can make full advantage of Z-source network components in both operating modes, i.e. a pair of Z-source inductor and capacitor can be used as low-pass filter in AC-DC rectification. The modulation strategy, average modeling of system, and features of critical variables for circuit design of the proposed MZC were examined for each operating mode. Simulations of the proposed MZC and its experimental verification have been presented. Analytical models of conduction and switching losses of the power-switch network in different operating mode have shown that the losses in the MZC compare favorably with conventional VSI for a range of power factor and modulation indices.
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Kazerani, Mehrdad. "Dyadic matrix converter theory : development, and application to voltage-source-converter type matrix converter." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=28794.
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For the past twenty years, the theoretical advance of the matrix converters has been impeded by the complexity arising from the time-varying trigonometric functions in their transformation matrix. In addition, the switching difficulties associated with the bidirectional switches have complicated the practical implementation of this class of converters.In this thesis, the dyadic matrix structure and the a-b-c to d-q-0 transformation have been melded together to develop the dyadic matrix converter theory which is a generalized theory for the three-phase to three-phase matrix converters.
The thesis addresses the zero-sequence interaction in the matrix converters and the role of the zero-sequence elements in the Displacement Power Factor (DPF) correction on the utility-side, based on the Static VAR Controller (SVC) principle. Also, it is proved that using all the control degrees of freedom available, the dual condition of Unity Displacement Power Factor (UDPF) on side-1 and Field Vector Control (FVC) on side-2 can be established.
In this thesis, a new matrix converter topology, based on the three-phase voltage-source converters, has been proposed in which the switching difficulties reported in the conventional nine-bidirectional-switch topology have been bypassed. The theoretical expectations have been verified by the simulation as well as experimental tests on a laboratory prototype of the new matrix converter topology composed of three units of voltage-source converters each rated at 1 kVA.
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HUANG, Cuiting. "Service composition in converged service environment." Phd thesis, Institut National des Télécommunications, 2012. http://tel.archives-ouvertes.fr/tel-00762644.
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The goal of this thesis is to provide enhanced mechanisms to deploy competitive services in a rapid and cost-effective manner. To achieve this goal, we first propose an automatic service composition model relying on an IMS/Web converged environment. This service composition model is intended to be one in which even non-professional users can easily reuse existing services to create new services. To further improve the automatic service composition feature, three strategies including passive update, active update and hybrid update are proposed and analyzed. We then propose a centralized service exposure framework for a variey of services, including Telecom / Web / Device / user-generated services. This framework aims at enhancing the user-centric and convergence features, and providing the unified access to diverse services.Subsequently, two P2P based service information sharing models are designed to complement the centralized service exposure model : i) A hierarchical P2P based model, which reuses Chord for guaranteeing the service discovery efficiency, meanwhile adopts the concept of abstract service publication and discovery for enabling the ambiguous services searching. ii) A triplex P2P overlay based model, which mainly targets the devices offered services. In this model, we use the gateways to delegate the devices residing in them for the global service exposure, and use a triplex overlay based architecture, which includes an underlying unstructured P2P layer, a Semantic Overlay Network (SON) based overlay and a service dependency overlay, for the service information sharing and discovery
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Limaye, Amit (Amit Govind). "Converged video delivery over heterogeneous networks." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/79526.
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Thesis (S.M.)--Massachusetts Institute of Technology, Engineering Systems Division, 2012.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 91-96).
Mobile traffic has grown substantially over the last few years; a trend which is expected to continue. The chief reasons behind this phenomenon are the availability of better handsets, faster cellular networks and the variety of content available on the internet suitable for consumption on mobile devices. The nature of the traffic is also changing from pure web browsing with latency-tolerant traffic to video, which is becoming the major class of content consumed on mobile devices. This trend, combined with the trend of decreasing prices per GB of data, which constrains the amount of money an operator can spend upgrading its network and they see increasing value in alternative solutions to address this data deluge while managing costs and maintaining customer service. A variety of solutions have been tried by operators based on enhanced charging, traffic engineering and backhaul infrastructure upgrades. Wi-Fi offload is one such promising solution as it addresses the congestion problem where it is most severe because of data consumption by users using streaming video. Cellular spectrum is a scarce and expensive resource for operators, and by allowing them to offload traffic to Wi-Fi networks in unlicensed spectrum they can free cellular spectrum for more valuable applications. Wi-Fi offload has, however, suffered from the incapability to manage seamless handovers and the required interaction of the user to select a Wi-Fi network. This made the process of attaching to a Wi-Fi network very complicated. These limitations have been addressed in recent standards and make the case for Wi-Fi offload more viable and attractive than earlier. At the same time new video optimization techniques such as H.264/SVC which allow the use of multiple streams and channel will allow content providers or distributors to use multiple networks and to scale video seamlessly according to handset capabilities and network conditions. The thesis proposes a solution, based on a set of new Wi-Fi standards and the new H.264/AVC codecs, which leverages a combination of low cost Wi-Fi and high reliability cellular networks to reduce the cost of video transmission while maintaining a comparable QOE for nomadic users. The thesis also enumerates some of the basic procedures that can be supported using the proposed architecture. This new architecture opens new opportunities for existing players in the mobile content ecosystem and adds new players to the ecosystem. The thesis identifies the needs and opportunities for each of the new player and also develops a cost model for streaming video using this solution.
by Amit Limaye.
S.M.
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Sweeney, Brian P. "Converged stepped spillway models in OpenFOAM." Kansas State University, 2014. http://hdl.handle.net/2097/17611.
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Master of ScienceDepartment of Computing and Information Sciences
Mitchell L. Neilsen
The United States Department of Agriculture (USDA) is currently researching the effectiveness of various earth dam designs and their ability to prevent erosion. This report utilizes experimental results from the USDA experimental hydraulic engineering research unit to develop computational fluid dynamics models using OpenFOAM. Several variations of smooth and stepped dam models are created and analyzed with OpenFOAM on multiple cores using Message Passing Interface. In this report, seven dam designs are analyzed to extract flow velocities and pressures and animations. This data and OpenFOAM models are helpful for determining potential erosion conditions.
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Huang, Cuiting. "Service composition in converged service environment." Thesis, Evry, Institut national des télécommunications, 2012. http://www.theses.fr/2012TELE0009/document.
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L'objectif de cette thèse est de fournir des mécanismes améliorés pour déployer des services compétitifs par des manières rapides et rentables. Nous proposons un modèle de composition de service basé sur un environnement IMS/Web convergent. Ce modèle permet aux utilisateurs non professionnels de réutiliser les services existants pour créer de nouveaux services facilement. Pour améliorer la fonctionnalité de composition automatique, trois stratégies, y compris mise à jour passive, mise à jour active et mise à jour hybride sont proposées et analysées. Nous introduisons ensuite une plateforme centralisée d'exposition de service pour une variété de services, y compris services de Télécom / Web / appareil / services générés par les utilisateurs. Cette plateforme vise à renforcer les caractéristiques de centrée-sur-utilisateur et convergence, et fournir l'accès unifié à différents services. Par la suite, deux modèles basés sur le P2P sont conçus pour compléter le modèle centralisé: i) Un modèle hiérarchique basé sur Chord pour garantir l'efficacité de la découverte de services. Il adopte le concept de publication et découverte de service abstrait pour permettre à la recherche de service ambiguë. ii) Un modèle de superposition-triplex et P2P basé, qui cible principalement des services offerts par les appareils. Dans ce modèle, nous utilisons des passerelles pour déléguer des appareils résidant en eux pour l'exposition globale de services, et utilisons une architecture basée sur une superposition triplex, qui comprend une couche P2P non structurée, une couche de réseau sémantique (SON), et une couche de dépendance de service, pour la partage de l'information de service et la découverte de servicesThe goal of this thesis is to provide enhanced mechanisms to deploy competitive services in a rapid and cost-effective manner. To achieve this goal, we first propose an automatic service composition model relying on an IMS/Web converged environment. This service composition model is intended to be one in which even non-professional users can easily reuse existing services to create new services. To further improve the automatic service composition feature, three strategies including passive update, active update and hybrid update are proposed and analyzed. We then propose a centralized service exposure framework for a variey of services, including Telecom / Web / Device / user-generated services. This framework aims at enhancing the user-centric and convergence features, and providing the unified access to diverse services.Subsequently, two P2P based service information sharing models are designed to complement the centralized service exposure model : i) A hierarchical P2P based model, which reuses Chord for guaranteeing the service discovery efficiency, meanwhile adopts the concept of abstract service publication and discovery for enabling the ambiguous services searching. ii) A triplex P2P overlay based model, which mainly targets the devices offered services. In this model, we use the gateways to delegate the devices residing in them for the global service exposure, and use a triplex overlay based architecture, which includes an underlying unstructured P2P layer, a Semantic Overlay Network (SON) based overlay and a service dependency overlay, for the service information sharing and discovery
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Ciocanea, Cristiana. "Lexique-grammaire des constructions converses en a da/ a primi en roumain." Phd thesis, Université Paris-Est, 2011. http://pastel.archives-ouvertes.fr/pastel-00667769.
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Ce travail sur les constructions converses en a da/ a primi contribue à la construction du lexique-grammaire du roumain. Les tables DP1 et DP2 sont le résultat de l'analyse des phrases à V-n (noms prédicatifs associés à des verbes) ou Npa (noms prédicatifs autonomes) actualisés par le verbe support a da. Les particularités du roumain font que les propriétés syntaxiques décrites soient très intéressantes lorsque nous analysons d'une manière contrastive le français et le roumain. Les divergences entre la réalisation des verbes supports a da et donner, aussi bien que les divergences concernant leurs variantes et les déterminants des noms prédicatifs étudiés, constituent des difficultés dans les domaines de la traductologie et de l'enseignement du FLE
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DANIILIDIS, Aris. "Analyse convexe et quasi-convexe ; applications en optimisation." Habilitation à diriger des recherches, Université de Pau et des Pays de l'Adour, 2002. http://tel.archives-ouvertes.fr/tel-00001355.
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Ce document de synthèse s'articule autour de l'analyse convexe, de l'analyse quasi-convexe et des applications en optimisation. Dans le premier domaine on aborde les thèmes de la continuité, de la différentiabilité et des critères de coïncidence pour les fonctions convexes, puis la convexification des fonctions semi-continues inférieurement. Pour l'étude des fonctions quasi-convexes deux approches sont adoptées : une approche analytique, via un sous-différentiel généralisé, et une approche géométrique, basée sur les normales aux tranches. La dernière partie est consacrée à des applications à l'intégration d'opérateurs multivoques, aux inéquations variationnelles et à des problèmes d'optimisation multicritères en dimension finie et infinie. Parmi les nouveautés de ce travail, on trouve la notion de monotonie fortement cyclique, qui caractérise le sous-différentiel d'une fonction convexe dont la restriction à son domaine est continue, la quasi-monotonie cyclique, qui est une propriété intrinsèque du sous-différentiel d'une fonction quasi-convexe avec des applications importantes en économie mathématique, et la notion de quasi-monotonie propre, qui caractérise les opérateurs pour lesquels l'inéquation variationnelle associée a toujours des solutions sur toute sous-partie convexe et faiblement compacte de leur domaine. Notons encore une nouvelle caractérisation de la propriété de Radon-Nikodym, et une extension à la dimension infinie d'un résultat de Janin concernant l'intégration d'un opérateur maximal cycliquement sous-monotone, résultat qui généralise le théorème classique de Rockafellar pour les opérateurs maximaux cycliquement monotones.
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Gray, Michael D. "Convergent field elastography." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53464.
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A new approach to soft tissue elastography is presented. The work was motivated by the need to understand and mitigate the effects of anthropogenic sound on marine mammals. These efforts have been hampered by a lack of knowledge of in vivo tissue viscoelastic moduli. To address this problem, a measurement system concept was developed to non-invasively determine shear viscoelastic properties at tissue depths of over 12 cm – well beyond the capabilities of existing systems.
The central design feature of the measurement system is a focused, sectored, annular ultrasonic source that generates a ring-like pressure field. This in turn produces a ring-like radiation force distribution in soft tissue, the response of which is primarily observable as a shear wave field that converges to the center of the force pattern. A second confocal transducer nested inside the shear wave generation source is used to measure the component of the shear wave motion along the beam axis. Propagation speed is estimated from displacement phase changes resulting from drive frequency induced dilation of the forcing radius. Forcing beams are modulated in order to establish shear speed frequency dependence, allowing quantification of shear speed dispersion. This concept for convergent field elastography (CFE) is intended to significantly improve the overall ability to estimate soft tissue shear speeds in thick, complex tissues while keeping within FDA-mandated ultrasound exposure limits.
A prototype system was developed and tested in tissue mimicking materials for which properties were independently determined. Experiments were first carried out in a homogeneous material, and subsequently in a material containing elastic contrast inclusions. Transmission experiments with re-hydrated samples of bottlenose dolphin skull and mandibular bone samples were conducted to quantify ultrasonic beam attenuation and distortion effects, and their cumulative impact on CFE shear estimation performance. In addition to supporting marine mammal studies, the techniques developed in this thesis may enable or extend a wide range of human medical diagnostics.