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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
51

On The Nature Of The Flow In A Separated Annular Diffuser

Dunn, Jason 01 January 2009 (has links)
The combustor-diffuser system remains one of the most studied sections of the turbomachine. Most of these investigations are due to the fact that quite a bit of flow diffusion is required in this section as the high speed flow exits the compressor and must be slowed down to enter the combustor. Like any diffusion process there is the chance for the development of an unfavorable adverse pressure gradient that can lead to flow separation; a cause of drastic losses within a turbine. There are two diffusion processes in the combustor-diffuser system: The flow first exits the compressor into a pre-diffuser, or compressor discharge diffuser. This diffuser is responsible for a majority of the pressure recovery. The flow then exits the pre-diffuser by a sudden expansion into the dump diffuser. The dump diffuser comprises the majority of the losses, but is necessary to reduce the fluid velocity within acceptable limits for combustion. The topic of active flow control is gaining interest in the industry because such a technique may be able to alleviate some of the requirements of the dump diffuser. If a wider angle pre-diffuser with separation control were used the fluid velocity would be slowed more within that region without significant losses. Experiments were performed on two annular diffusers to characterize the flow separation to create a foundation for future active flow control techniques. Both diffusers had the same fully developed inlet flow condition, however, the expansion of the two diffusers differed such that one diffuser replicated a typical compressor discharge diffuser found in a real machine while the other would create a naturally separated flow along the outer wall. Both diffusers were tested at two Reynolds numbers, 5x104 and 1x105, with and without a vertical wall downstream of the exit to replicate the dump diffuser that re-directs the flow from the pre-diffuser outlet to the combustor. Static pressure measurements were obtained along the OD and ID wall of the diffusers to determine the recovered pressure throughout the diffuser. In addition to these measurements, tufts were used to visualize the flow. A turbulent CFD model was also created to compare against experimental results. In the end, the results were validated against empirical data as well as the CFD model. It was shown that the location of the vertical wall was directly related to the amount of separation as well as the separation characteristics. These findings support previous work and help guide future work for active flow control in a separated annular diffuser both computationally and experimentally.
52

Konflikten i Antiochia : - en jämförande analys mellan ”Nya perspektivet på Paulus” och ”Paulus inom judendomen”

Mattsson, Henrik January 2017 (has links)
I denna uppsats har jag studerat Konflikten i Antiochia, utifrån två aktuella perspektiv på Paulus - ”Nya Perspektivet på Paulus” och ”Paulus inom judendomen”. Syftet har varit att definiera och klarlägga den huvudsakliga innebörden i de två respektive perspektiven samt att utifrån den förståelsen göra en jämförande analys med hjälp av den valda perikopen. Jag har också sökt analysera vilka konsekvenser perspektiven kan få för vår förståelse av Paulus. För att avgränsa uppgiften har jag utgått från ett urval av forskare inom respektive perspektiv. Dessa är för NPP: E. P. Sanders, James D. G. Dunn och N.T. Wright. För PIJ har jag främst utgått från material av Mark Nanos och Magnus Zetterholm. För att kunna göra perspektiven rättvisa presenterar jag också en kort beskrivning av det ”Traditionella Perspektivet på Paulus” eftersom det är det perspektiv som i lite varierande form har varit det dominerande genom historien. Jag har också gjort några förhoppningsvis förtydligande utvikningar kring hur det gick till när judendom och kristendom skiljdes åt samt ett kort avsnitt kring begreppet bordsgemenskap. Slutsatsen i uppsatsen är att perspektiven förvisso skiljer sig åt på flera punkter men att de till övervägande del ligger nära varandra. Detta är särskilt tydligt vad gäller de vetenskapliga drivkrafterna och metoderna som respektive perspektiv använder sig av.
53

不同訊息的目標設定對內在動機的影響

林文蘭, LIN, WEN-LAN Unknown Date (has links)
認知評價理論(cognitive evaluation theory )認為個人行為的自我控制感以及能 力感會影響內在動機。本研究的目的即是在探討相同目標下個體對目標的知覺<能力 知覺與控制知覺>如何影響內在動機。 本研究採用實驗法,研究樣本是政治大學學生99名,隨機分派受試到三個實驗組( 這三組受試的目標相同,但提供他們不同的目標訊息:無其他訊息、能力訊息與控制 訊息)和一個控制組(這組受試無目標設定),實驗作業為七巧板拼圖,每一位受試 皆做作業15分鐘,然後測量其內在動機,內在動機的指標有二個:態度測量(受試 對作業的興趣及喜好程度)和行為測量(實驗結束後的休息期間,受試繼續做作業的 時間)。 實驗結果採用Dunna 的事前考驗分析,分析時又將每一個實驗組分別區分為已達到目 標和未達到目標兩組,然後進行一些檢驗,結果顯示:(1)目標組受試的內在動機 較控制組低(2)在控制訊息下,不論達到目標與否,受試的內在動機均較控制組受 試低;(3)在控制訊息下,已達到目標組的內在動機較未達到組低。最後,以認知 評價理論加以討論之。
54

Oscar James Dunn: A Case Study in Race & Politics in Reconstruction Louisiana

Mitchell, Brian 17 December 2011 (has links)
The study of African American Reconstruction leadership has presented a variety of unique challenges for modern historians who struggle to piece together the lives of men, who prior to the Civil War, had little political identity. The scant amounts of primary source data in regard to these leaders’ lives before the war, the destruction of many documents in regard to their leadership following the Reconstruction Era, and the treatment of these figures by historians prior to the Revisionist movement have left this body of extremely important political figures largely unexplored. This dissertation will examine the life of one of Louisiana’s foremost leaders, Lt. Governor Oscar James Dunn, the United States’ first African American executive officeholder. Using previously overlooked papers, Masonic records, Senate journals, newspaper articles and government documents, the dissertation explores Dunn’s role in Louisiana politics and chronicles the factionalization of the Republican Party in Reconstruction New Orleans. Born a slave and released from bondage at an early age, Oscar J. Dunn was able to transcend the stigma which was often attached to those who had been held in slavery. A native of New Orleans, born to Anglo-African parents, he was also able to transcend the language barrier that often excluded Anglo-Africans from social acceptability in Afro-Creole society. Although illiterate, Dunn’s parents made critical strides in securing his social mobility by providing him with both a formal education and a trade apprenticeship. Those skills propelled Dunn forward within his Anglo-African community wherein he became a key figure in the community’s two most important institutions, the York Rite Masonic Lodge and the African Methodist Episcopal church. This dissertation argues that Dunn’s political ascent was linked to the political enfranchisement of antebellum Anglo-Africans in Louisiana, Dunn’s involvement in Anglo-African institutions (particularly the York Rite Masonic Lodge and the African Methodist Episcopal church) and Dunn’s ability to find middle ground in the racially charged arguments that engulfed Reconstruction New Orleans’s political arena. Keywords: Oscar Dunn, Reconstruction, New Orleans, Republican, Louisiana, African American, Politics
55

Är Guds rike här nu igen? : En jämförelse mellan Jesus undervisning och hans judiska tradition angående Guds rike som närvarande. / Is the kingdom of God present once more? : A comparison between the teaching of Jesus and his jewish tradition regarding the kingdom of God as present.

Berméus, Viktor January 2023 (has links)
This essay is about how five different exegetical researchers view the historical Jesus teaching about the kingdom of God as present and the possibility for it to be in continuity with his jewish tradition and contemporary context. Jesus announces that the kingdom of God is present and that this present reality is revealed through the miraculous deeds of Jesus. The idea of the kingdom of God as present is in some ways to be found in different texts and certain sects within Second Temple Judaism. Through their work on the historical Jesus the five exegetes shows that, even though the language and the symbol of the kingdom of God is similar, Jesus is in some ways doing something radically new and different in his use of the term “the kingdom of God.” By comparing certain logions with certain texts from Second Temple Judaism, this study shows that there is some continuity, but also that Jesus is presenting a new type of kingdom, a new type of presence and another kind of movement when presenting the kingdom of God as present.
56

The resurrection revived : a critical examination

Janse van Rensburg, Hanre 12 July 2010 (has links)
Why has the resurrection once again become the centre point of a new storm brewing in both popular and academic culture? Because of the combination of a realisation of death, and of human beings’ need to interpret its (death’s) mysteries; a question innate to the human experience. In a fear-filled world where war, terrorism, and economic collapse bring the question of death (and the afterlife) to the fore, people are asking – perhaps more than ever – what happens after we die. This popular fascination with the end, with death, and with what (if anything) lies beyond it, has also influenced the theme and the direction of academic work in the theological field. For this reason an informed analysis of the resurrection debate has become necessary – a process of analysing the different strata of understanding as it relates to current resurrection research. Any consideration given to gender or power, birth or burial, money or food is made in an effort to situate the debates being studied. Could a reason for these still varied conclusions on the subject be that those writing on it are not equipped for the task of analysing and interpreting history and historical method? In order to be able to begin answering this question, one of this study's main objectives is to learn and apply the approach of historians – outside of the community of Biblical scholars – to the question of whether Jesus of Nazareth rose from the dead; thus providing interaction with philosophers of history related to hermeneutical and methodological considerations. The method proposed here is a combination of historiography and an ethics of understanding, with the use of Correspondence theory (in which history is described as knowable, and some hypotheses as truer than others in a correspondence sense). This study wants to address both the different questions and analyses of the debate by asking: What if we see things differently? What if we were to ask a different set of questions? In order for this to be possible, we need to develop an ethics of interpretation – instead of asking the expected questions, this study aims to ask: What interests and frameworks inform the questions we ask and the way in which we interpret our sources? How does scholarship echo (and even participate in) contemporary public discourses about Christian identity? These questions will be attended to through three intersecting practices – critical reflexivity, complemented by the use of the two related practices of textual re-reading and public debate. However, these are not methodical steps in a linear progression, they are mutually interacting practices that draw on each other; raising new possibilities for the way in which we historically reconstruct the Jesus movement, allowing us to enter into the public debate about Jesus and eschatology in a way that takes the ethical possibilities and consequences of our reconstructions of Christian origins and identity seriously. For, though fragmentary and broken human words may be, they nevertheless possess a capacity to function as the medium through which God is able to disclose himself. Copyright / Dissertation (MTh)--University of Pretoria, 2010. / New Testament Studies / unrestricted
57

Johnny `Joãozinho'; Reb: The Creation and Evolution of Confederate Identity in Brazil

Lownes, Steven P. 02 August 2018 (has links)
No description available.
58

Rooted in all its story, more is meant than meets the ear : a study of the relational and revelational nature of George MacDonald's mythopoeic art

Jeffrey Johnson, Kirstin Elizabeth January 2011 (has links)
Scholars and storytellers alike have deemed George MacDonald a great mythopoeic writer, an exemplar of the art. Examination of this accolade by those who first applied it to him proves it profoundly theological: for them a mythopoeic tale was a relational medium through which transformation might occur, transcending boundaries of time and space. The implications challenge much contemporary critical study of MacDonald, for they demand that his literary life and his theological life cannot be divorced if either is to be adequately assessed. Yet they prove consistent with the critical methodology MacDonald himself models and promotes. Utilizing MacDonald’s relational methodology evinces his intentional facilitating of Mythopoesis. It also reveals how oversights have impeded critical readings both of MacDonald’s writing and of his character. It evokes a redressing of MacDonald’s relationship with his Scottish cultural, theological, and familial environment – of how his writing is a response that rises out of these, rather than, as has so often been asserted, a mere reaction against them. Consequently it becomes evident that key relationships, both literary and personal, have been neglected in MacDonald scholarship – relationships that confirm MacDonald’s convictions and inform his writing, and the examination of which restores his identity as a literature scholar. Of particular relational import in this reassessment is A.J. Scott, a Scottish visionary intentionally chosen by MacDonald to mentor him in a holistic Weltanschauung. Little has been written on Scott, yet not only was he MacDonald’s prime influence in adulthood, but he forged the literary vocation that became MacDonald’s own. Previously unexamined personal and textual engagement with John Ruskin enables entirely new readings of standard MacDonald texts, as does the textual engagement with Matthew Arnold and F.D. Maurice. These close readings, informed by the established context, demonstrate MacDonald’s emergence, practice, and intent as a mythopoeic writer.
59

The Development of Education in Bowling Green, Kentucky

Vance, Lula Dickey 01 June 1936 (has links)
In recent years several articles have been written concerning education in Bowling Green, Kentucky, but the writer has been unable to discover an article that has treated the development of education from the time Bowling Green was established until now. It is the motive of this study to trace the development of education from the time Bowling Green was established until the present time. Information for this thesis has been obtained from various sources, but the greater part of it has been secured through personal interviews, unpublished manuscripts, scrapbooks and histories.
60

EXPLORING GRAPH NEURAL NETWORKS FOR CLUSTERING AND CLASSIFICATION

Fattah Muhammad Tahabi (14160375) 03 February 2023 (has links)
<p><strong>Graph Neural Networks</strong> (GNNs) have become excessively popular and prominent deep learning techniques to analyze structural graph data for their ability to solve complex real-world problems. Because graphs provide an efficient approach to contriving abstract hypothetical concepts, modern research overcomes the limitations of classical graph theory, requiring prior knowledge of the graph structure before employing traditional algorithms. GNNs, an impressive framework for representation learning of graphs, have already produced many state-of-the-art techniques to solve node classification, link prediction, and graph classification tasks. GNNs can learn meaningful representations of graphs incorporating topological structure, node attributes, and neighborhood aggregation to solve supervised, semi-supervised, and unsupervised graph-based problems. In this study, the usefulness of GNNs has been analyzed primarily from two aspects - <strong>clustering and classification</strong>. We focus on these two techniques, as they are the most popular strategies in data mining to discern collected data and employ predictive analysis.</p>

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