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Littérature scientifique sur le sujet « Blanket theory »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 15 février 2022

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Articles de revues sur le sujet "Blanket theory"

Jolodosky, Alejandra, Manuele Aufiero et Massimiliano Fratoni. « Exact perturbation theory for fusion blanket design ». Annals of Nuclear Energy 131 (septembre 2019) : 353–66. http://dx.doi.org/10.1016/j.anucene.2019.03.039.

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Chen, Ye-Hong, Frank T. C. Tsai, Jack A. Cadigan, Navid H. Jafari et Tzenge-Huey Shih. « Relief Well Evaluation : Three-Dimensional Modeling and Blanket Theory ». Journal of Geotechnical and Geoenvironmental Engineering 147, n^o 8 (août 2021) : 04021054. http://dx.doi.org/10.1061/(asce)gt.1943-5606.0002547.

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Xu, Rui, Yong Hui Hu, Tao Zhang et Fan Zhang. « Research on Effect of Blanket Jamming on GNSS Signal ». Advanced Materials Research 846-847 (novembre 2013) : 956–61. http://dx.doi.org/10.4028/www.scientific.net/amr.846-847.956.

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this article uses Power Spectrum Density Theory and The Monte Carlo Simulation Method to analyze the effect of blanket jamming on the bit error rate of satellite navigation signal, and emulate, analyze and compare suppress interference interference effect on PSK-R signal and BOC signal. All the analyses are based on the research on blanket jamming and PSK-R signal and BOC signal.

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Daigger, Glen T., John S. Siczka, Thomas F. Smith, David A. Frank et J. A. McCorquodale. « Characterizing shallow secondary clarifier performance where conventional flux theory over-estimates allowable solids loading rate ». Water Science and Technology 74, n^o 2 (20 avril 2016) : 324–32. http://dx.doi.org/10.2166/wst.2016.177.

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The performance characteristics of relatively shallow (3.3 and 3.7 m sidewater depth in 30.5 m diameter) activated sludge secondary clarifiers were extensively evaluated during a 2-year testing program at the City of Akron Water Reclamation Facility (WRF), Ohio, USA. Testing included hydraulic and solids loading stress tests, and measurement of sludge characteristics (zone settling velocity (ZSV), dispersed and flocculated total suspended solids), and the results were used to calibrate computational fluid dynamic (CFD) models of the various clarifiers tested. The results demonstrated that good performance could be sustained at surface overflow rates in excess of 3 m/h, as long as the clarifier influent mixed liquor suspended solids (MLSS) concentration was controlled to below critical values. The limiting solids loading rate (SLR) was significantly lower than the value predicted by conventional solids flux analysis based on the measured ZSV/MLSS relationship. CFD analysis suggested that this resulted because mixed liquor entering the clarifier was being directed into the settled sludge blanket, diluting it and also creating a ‘thin’ concentration sludge blanket that overlays the thicker concentration sludge blanket typically expected. These results indicate the need to determine the allowable SLR for shallow clarifiers using approaches other than traditional solids flux analysis. A combination of actual testing and CFD analyses are demonstrated here to be effective in doing so.

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Shang, Yilun. « Sandwich Theorem of Cover Times ». ISRN Probability and Statistics 2013 (1 août 2013) : 1–3. http://dx.doi.org/10.1155/2013/839846.

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Escamilla-Rivera, Celia, et Júlio C. Fabris. « The Possibility of a Non-Lagrangian Theory of Gravity ». Universe 7, n^o 7 (6 juillet 2021) : 230. http://dx.doi.org/10.3390/universe7070230.

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General Relativity resembles a very elegant crystal glass: If we touch its principles, that is, its Lagrangian, there is a risk of breaking everything. Or, if we will, it is like a short blanket: Curing some problems creates new problems. This paper is devoted to bring to light the reasons why we pursue the possibility of a non-Lagrangian theory of gravity under the hypothesis of an extension of the original general relativity with an ansatz inspired in the fundamental principles of classical and quantum physics.

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Pezza, Ing Lucio. « A new approach for studying the operation of a secondary sedimentation tank ». Water Practice and Technology 11, n^o 1 (1 mars 2016) : 187–97. http://dx.doi.org/10.2166/wpt.2016.025.

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A new theory regarding the behavior of activated sludge in a sedimentation tank has been developed, based on the principles of momentum preservation in suspended sludge, the ratio between drag and gravity, and the potential energy of the sludge blanket. Field tests enabled the determination of new criteria for the functioning of secondary sedimentation tanks complying with this new theory.

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Weis, M. « The Earth's Blanket : Traditional Teachings for Sustainable Living ». Interdisciplinary Studies in Literature and Environment 13, n^o 1 (1 janvier 2006) : 284–85. http://dx.doi.org/10.1093/isle/13.1.284.

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Mayhew, Kent W. « New Thermodynamics : Global Warming and Man’s Activities ». European Journal of Engineering Research and Science 4, n^o 7 (24 juillet 2019) : 58–62. http://dx.doi.org/10.24018/ejers.2019.4.7.1432.

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A previously published new kinetic theory not only improves the fit with accepted empirical findings, it also means that intermolecular collisions are inelastic. Combined with a previously published new understanding of lost work and the realization that the whole atmosphere acts as a thermal blanket completely changes our understanding, as to how man’s activities relate to global warming.

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Batool, Abeera, Daniel R. VandenBerge et Thomas L. Brandon. « Practical Application of Blanket Theory and the Finite-Element Method to Levee Underseepage Analysis ». Journal of Geotechnical and Geoenvironmental Engineering 141, n^o 4 (avril 2015) : 04015001. http://dx.doi.org/10.1061/(asce)gt.1943-5606.0001269.

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Thèses sur le sujet "Blanket theory"

Batool, Abeera. « Advanced Undersepage Analyses for Levees ». Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/52507.

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The events of Hurricane Katrina in 2005 prompted the US Army Corps of Engineers (USACE) to commission studies to identify the failure mechanisms of levees and I-walls. This involves updating of the current USACE Engineering Manual (EM) 1110-2-1913, "Design and Construction of Levees," which uses Blanket Theory for seepage analysis. Blanket Theory entails analytical methods for calculating seepage pressures and flows beneath levees. The revision of the manual will address the design seepage criteria for levees, with a focus on incorporating new seepage analysis procedures besides Blanket Theory. Finite element analysis is one such method that has more recently become the method of choice for general seepage analyses in geotechnical engineering. The focus of this research is mainly on underseepage analyses of levees in the lower Mississippi valley using numerical modeling, with a goal of helping engineers in making the transition from current Corps methods to finite element analysis. General guidelines are provided to conduct seepage analysis using finite element analysis for pre-defined Blanket Theory cases as well as for the design of seepage berms. In addition, the 3D finite element modeling is conducted for a full-scale field load test involving complex geometry and stratigraphy, which is useful in better understanding the response of levees and I-walls.
Ph. D.

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Gillan, Lindsey. « Encountering theory : readings in contemporary American fiction ». Thesis, University of Sussex, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285082.

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This thesis gathers four American fiction writers from the group labelled as blank fiction writers during the 1980s - Lynne Tillman, Kathy Acker, Joel Rose and Catherine Texier - to suggest that their work does more than represent the flat, stunned prose attributed to blank fiction. Rather, their simple, streetwise yet often lyrical language is politically engaged, debating profound questions about the nature of identity, both of the indi vidual and of the text. The writing, while superficially transparent, is illusory, reflecting the belief that meaning is contextual: this has wide-reaching implications for textuality since the borders of meaning and of the text are contested. While the differences in form and style of these writers are evident, their focus upon the links between language, memory and identity within particular historico-cultural contexts show that they all have interests in the politics of language. The characterisation and narratives of their texts are infused with a degree of self-reflexivity that demonstrates a recognition of their own instability and their contingency upon contexts beyond as well as within the textual borders. By focusing upon the limitations of language to discuss or express identity and memory in concrete terms, these writers ask philosophical and political questions that arguably stand apart from the amoral prose of other writers of blank fiction such as Brett Easton Ellis and Dennis Cooper. Their texts address issues of identity regarding gender, sexuality, race, class, ethnicity and poverty while emphasizing that they cannot be divorced from purely philosophical questions about the nature of being and its relationship to language. Yet these writers move beyond postmodern debates about textuali ty to explore the limits of fiction within the wider cultural contexts of writing at the end of the twentieth century.

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Miklody, Daniel [Verfasser], Benjamin [Akademischer Betreuer] Blankertz, Benjamin [Gutachter] Blankertz, Gabriel [Gutachter] Curio et Guido [Gutachter] Nolte. « The neurophysiology of EEG and the physics of the head : theory and Application for Spontaneous EEG / Daniel Miklody ; Gutachter : Benjamin Blankertz, Gabriel Curio, Guido Nolte ; Betreuer : Benjamin Blankertz ». Berlin : Technische Universität Berlin, 2020. http://d-nb.info/1216945128/34.

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« Kentron : Journal zur Lehrerbildung [14 (2002) mit dem Titel : Praxisstudien – Blanke Theorie?] ». Universität Potsdam, 2002. http://opus.kobv.de/ubp/volltexte/2007/1181/.

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Inhalt: Gerda Haßler: Zur Modularisierung der Lehramtsstudiengänge an der Universität Potsdam Roswitha Lohwaßer: Weiterführung und Entwicklung einer integrativen Lehrerbildung Viola Grellmann: Praxisstudien im Lehramt. Zahlen und Fakten Nicole Schulz: Wie war’s in der Schule? – Wie immer! Zum Tag der Fachdidaktiken 2002 Angelika Kleinschmidt, Dieter Höterhoff, Bernd Meier: Professionsorientierung versus "Fachmann" oder "Pädagoge". Ein Modellversuch Janina Pieranska, Wladislaw Pieranski, Ulf Holzendorf: Andere Länder, andere Wege? Zur Lehrerbildung in Polen Andreas Sydow: Meine ersten zwei Semester – Das Lehramtsstudium Informatik und Mathematik Sandra Müller-Borowski: Gute Seiten, schlechte Seiten. Erinnerungen an die Studienzeit Wolfgang Roksch: Pestalozzianer, Schul- und Sozialreformer – Wilhelm von Türk und die Lehrerbildung Nicole Schulz: Damit Talente Sieger werden – Die "Eliteschule des Sports Potsdam"

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Chieh, Chun, et 黃俊傑. « Apply blance scorecard theory to integrate strategy and build the management model for steel corporation-By D company for example ». Thesis, 2011. http://ndltd.ncl.edu.tw/handle/67998481017275875455.

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碩士
國立中央大學
工業管理研究所碩士在職專班
99
There are many research studies in both academic and practical fields, the Balance Scorecard theory, which developed by Harvard University Kaplan Professor and Nolan Norton Institute CEO Nolan Norton In 1992,not only has financial perspective, but also involve customer perspective、internal business process perspective and learning and growth perspective. The Balance Scorecard theory link perspectively to drive the future performance and also cover the weakness that only used financial perspective measure performance. This research case is base on a famous rolling mill department of steel group in Taiwan, using the Balance Scorecard theory to build the management model. Reducing the conflicts between the new and old company culture by interviewing people and collecting data to find a clear strategy direction. eventuality, every staff can improve their performance in job and reach the new company goal.

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Livres sur le sujet "Blanket theory"

Plantinga, Carl. Immersion and Emotion. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190867133.003.0007.

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This chapter discusses both immersion and emotion in the context of an ethics of engagement. I defend both against criticisms leveled by estrangement theory, which tends to be suspicious against the effects of each. The purpose is not merely defense, however, but to make positive claims about how immersion and emotion function in the viewing of screen stories, and beyond that to suggest how an ethics of engagement might approach them. The chapter suggests that immersion in itself is not necessarily harmful, and the immersive experience is sometimes coextensive with the sort of critical spectator experience favored by estrangement theorists. With regard to emotion, I argue that the blanket dismissal of emotion by estrangement theorists is wholly counterproductive. Instead, the ethical critic ought to understand what emotions are and how they function in order to distinguish their ethical effects.

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Singer, Abraham A. Business Ethics and Efficiency. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190698348.003.0012.

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This and the next chapter articulate a theory of business ethics that fits with how the book has approached corporate governance and corporate law. It takes the “market failures approach” (MFA) to business ethics as a starting point, a view that takes efficiency to be the primary moral principle for business. The MFA holds that businesses have an ethical duty not to exploit “market failures,” the inefficiencies and misallocations systematically and predictably effected by markets. This view is strong because it provides a robust account of business’s ethical duties within the framework of contemporary economic theory; business ethics is neither a wet blanket draped over the C-suite nor a self-serving rationalization of business’s self-interested activities. Instead, business ethics is shown to fit within a larger scheme of social cooperation, taking seriously businesses’ place within that scheme, particularly within a competitive market characterized by deontic weakening.

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Maguire, Laurie. The Rhetoric of the Page. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198862109.001.0001.

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This book explores blank space in early modern printed books; it addresses physical blank space (from missing words to vacant pages) as well as the concept of the blank. It is a book about typographical marks, readerly response, and editorial treatment. It is a story of the journey from incunabula to Google books, told through the signifiers of blank space: empty brackets, dashes, the et cetera, the asterisk. It is about the semiotics of print and about the social anthropology of reading. The book explores blank space as an extension of Elizabethan rhetoric with readers learning to interpret the mise-en-page as part of a text’s persuasive tactics. It looks at blanks as creators of both anxiety and of opportunity, showing how readers respond to what is not there and how writers come to anticipate that response. Each chapter focuses on one typographical form of what is not there on the page: physical gaps (Chapter 1), the &c (Chapter 2) and the asterisk (Chapter 3). The Epilogue uncovers the rich metaphoric life of these textual phenomena and the ways in which Elizabethan printers experimented with typographical features as they considered how to turn plays into print.

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McCrea, Ronan. The Consequences of Disaggregation and the Impossibility of a Third Way. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198794394.003.0006.

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Disaggregating religion shows there are both elements of religion that are not problematic in political terms and some elements of non-religious beliefs that are. However, religion does not exist in disaggregated fashion in the world and predominant forms of religion in the West combine these problematic features in ways other forms of belief do not. Therefore, in the contemporary West a blanket ban on state endorsement of a particular religion is the only sustainable course. Dealing with the problems posed by predominant forms of religion requires a category of ‘religion’ which may also cover religions that are not politically problematic. This overinclusiveness is necessary to permit believers to take political actions that may be inconsistent with their faith while retaining a valued religious identity.

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Holloway, Sally. Materializing Maternal Emotions. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198802648.003.0010.

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This chapter analyses the material expression of emotion during the birth and renunciation of infants in England over the long eighteenth century. These transformative moments in the life cycle were shaped by the creation, purchase, and display of objects. The chapter focuses primarily on textiles with particular emotional or symbolic significance, exploring the changing emotional meanings of childbed linen, blankets, ribbons, cockades, and quilts. It argues that a mother’s touch provided a key means of imbuing these items with emotional value, as women carefully inked, pinned, and embroidered objects by hand. The motifs they selected worked to create a powerful material vocabulary of maternal feeling, utilizing symbols from the wider material culture of maternity, including hearts, crowns, acorns, and blossoming flowers. Through these rituals, women could wish love, health, happiness, and prosperity into their children’s future lives.

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Lopez, Jeremy. From Bad to Verse. Sous la direction de Jonathan Post. Oxford University Press, 2013. http://dx.doi.org/10.1093/oxfordhb/9780199607747.013.0007.

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Is it possible to hear blank pentameter verse during a theatrical performance? Can an audience perceive the difference between verse and prose, or hear when the playwright alters the iambic rhythm? Is blank verse a constitutive element of the performance event, something whose handling by the actors should be used to measure a production’s success? Is the poetry the actors speak more important than the visual and narrative experience they work to create? This chapter examines some answers that have been provided to these questions by modern criticism and performance. Part 19.1 discusses scholarly conceptions of blank verse as an historical phenomenon. Part 19.2 discusses the place Shakespeare’s poetry has held in post-Renaissance engagements with Shakespeare’s plays in performance. Part 19.3 focuses on Othello in order to draw some conclusions about the historical and ideological stakes of speaking, experiencing, and criticizing dramatic poetry in live performance.

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Hooper, Daniel, et Natasha Hashimoto, dir. Teacher Narratives From the Eikaiwa Classroom : Moving Beyond "McEnglish". Candlin & Mynard ePublishing, 2020. http://dx.doi.org/10.47908/13.

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This book includes 16 chapters written by current and former eikaiwa (English conversation school) teachers to illustrate a complexity within the eikaiwa profession that has been thus far largely ignored. Through teacher narratives, the authors explore the unique and often problematic world of eikaiwa to present a counter narrative to what the editors regard as blanket stereotyping of a multifaceted and evolving teaching context. Eikaiwa schools are found in virtually every city and town in Japan. They provide conversation and test-preparation classes for learners of all ages. Those attending eikaiwa may be looking to prepare for an overseas holiday or work placement, achieve a required TOEIC score for their company, or simply enjoy a new hobby and socialise with people from different cultures and backgrounds. Eikaiwa teachers often need to negotiate conflicting demands from students, parents, management, and society at large. Furthermore, opportunities for professional development are scarce and research on this context is virtually non existent. Despite the massive scale of the eikaiwa industry and the varied roles that teachers are required to fulfil within it, expatriate and ELT communities have also tended to stigmatise the work of eikaiwa teachers as being simplistic and uniform. As a result, many former eikaiwa teachers choose to “forget” their eikaiwa past and the way it shaped them as professionals. This volume provides an important opportunity for eikaiwa teachers to share their stories and for the editors to present a coherent and convincing case for the value that the experiences of working in English conversation schools has for our understanding of teaching and learning languages.

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Alves, Hélio J. S. Milton in Portuguese. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198754824.003.0014.

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This chapter surveys all printed Portuguese translations of Paradise Lost. The translational journey begins in the late eighteenth century, at a time when epic poetry was still the literary genre that, most of all, represented and identified a nation, and blank verse had become, once more, a major means of poetic imitation and expression in Portuguese. The translational journey from neoclassical standards to Portuguese and Brazilian Romanticism through its last instantiation in 2014 courses through the various attempts at translating Paradise Lost and the influence of such attempts on the development of later literature, especially long poems. This chapter examines questions raised by Portuguese translators and their collaborators about epic poetry, blank verse, and the closely linked issues of religion, literary politics, and art.

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Coward, John M. Posing the Indian. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252040269.003.0002.

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This chapter examines Indian portraits, one of the earliest and most common ways that Indian faces and bodies came to the pages of the illustrated press. Stereotyping was a routine part of this representational process. Indian portraits emphasized Indian physiognomy, especially facial features that marked the subjects as Indians—dark skin, dark hair, prominent noses, and high cheekbones. These illustrations also highlighted cultural signs such as feathers, necklaces and beads, blankets, and buckskin clothing. In some cases, photographs were altered to remove non-Indians or to shift the subject from the studio to the plains. In all these ways the illustrated press portraits staged Indians for public scrutiny with little ambiguity about their racial identity. This sort of representation reinforced racial differences, placing Indians in an inferior racial category and making distinctions between civilized whites and “savage” Indians that no nineteenth-century reader was likely to miss.

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Sørensen, Mikkel, et Pierre Desrosiers. Paleoeskimo Lithic Technology. Sous la direction de Max Friesen et Owen Mason. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199766956.013.16.

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In this chapter the evolution of lithic technology during the Paleoeskimo period is explored. The diversity of lithic raw materials is considered, as well as how they have been extracted and transformed into tool blanks. This was done mainly through the production of flakes and microblades, followed by the making of a wide range of tools. The evolution from spalled burins to burin-like tools, as well as the evolution of chipped tools and microblade production, and the circulation of raw materials, are some of the main topics considered. Lithic technology helps to understand the differences that have existed and the relative homogeneity of Paleoeskimo cultures in consideration of the size of their territory.

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Chapitres de livres sur le sujet "Blanket theory"

Fleming, Rex J. « The Source of the Earth’s Thermal Blanket and Energy Balance ». Dans The Rise and Fall of the Carbon Dioxide Theory of Climate Change, 61–67. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16880-3_10.

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Rosas, Fernando E., Pedro A. M. Mediano, Martin Biehl, Shamil Chandaria et Daniel Polani. « Causal Blankets : Theory and Algorithmic Framework ». Dans Active Inference, 187–98. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-64919-7_19.

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Hillier, D. J. « Non-LTE Line Blanketed Atmospheres for Hot Stars ». Dans Fundamental Stellar Properties : The Interaction Between Observation and Theory, 209–16. Dordrecht : Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5602-8_29.

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Dunn, Kevin C. « MadLib #32 : The (Blank) African State : Rethinking the Sovereign State in International Relations Theory ». Dans Africa’s Challenge to International Relations Theory, 46–63. London : Palgrave Macmillan UK, 2001. http://dx.doi.org/10.1057/9780333977538_4.

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Urquhart, Cathy, et Walter Fernández. « Using Grounded Theory Method in Information Systems : The Researcher as Blank Slate and Other Myths ». Dans Enacting Research Methods in Information Systems : Volume 1, 129–56. Cham : Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29266-3_7.

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Chung, K., F. Barlat, J. C. Brem, D. J. Lege et O. Richmond. « Optimization of an Anisotropic Blank Shape Based on Ideal Sheet Forming Design Theory and FEM Analysis ». Dans Computational Mechanics ’95, 2462–67. Berlin, Heidelberg : Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-79654-8_409.

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Green, Madeleine. « Getting Unstuck with Internationalization at Home : Seizing the Post-pandemic Moment ». Dans The Promise of Higher Education, 99–105. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67245-4_16.

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AbstractAs I write this essay in late May 2020, the higher education press is blanketed by debate about the enduring changes brought on by COVID-19. Some maintain that the pandemic has already triggered disruptive changes, such as the quick move to online learning and variations in the academic calendar. They speculate that these shifts will endure after the crisis passes. Others predict a shift in the landscape of higher education. In countries with a private higher education sector that is highly dependent on tuition revenue, a substantial number may close, and the resulting landscape will be dominated by stronger, richer institutions. One estimate is that 20% of private institutions in the United States will close (Wescott 2020).

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Törner, Günter. « Are Researchers in Educational Theory Free of Beliefs : In Contrast to Students and Teachers?—Is There an Overseen Research Problem or Are There “Blank Spots” ? » Dans Views and Beliefs in Mathematics Education, 1–8. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01273-1_1.

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Brown, C. T. « 8a. Blanket theory revisited or More than a decade down under ». Dans Design of Breakwaters, 157–75. Thomas Telford Publishing, 1988. http://dx.doi.org/10.1680/dob.13513.0011.

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Ohajuru, Michael. « Before and After the Eighteenth Century : The John Blanke Project ». Dans Britain's Black Past, 7–26. Liverpool University Press, 2020. http://dx.doi.org/10.3828/liverpool/9781789621600.003.0002.

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This chapter, authored by Michael Ohajuru, describes the origins and mission of the John Blanke Project of which he is the creator. John Blanke was a black trumpeter for the Tudor Court, pictured twice in the Great Tournament Roll of Westminster, and the first person of African descent in Britain for whom there is an identifiable image and documentation. Because so little is known of Blanke’s life, the Project commissions artists to portray Blanke in a variety of artistic mediums including poetry, rap, music, visual arts and the stage, letting history inform their imaginations. The Project also invites historians to contribute written pieces to add dimension to an understanding of what Blanke’s life might have been like in this time and place. The chapter attributes the genesis of the project to presentations Ohajuru gave with Dr Miranda Kauffman entitled Image and Reality: Black Africans in Renaissance England (IRBARE) in which he discussed images of the black magus or black king in art and the inclusion of Blanke in commissioned paintings by Stephen B. Whately on the life and times of Henry VII.

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Actes de conférences sur le sujet "Blanket theory"

Bogetic, Sandra, Phillip Gorman, Manuele Aufiero, Massimiliano Fratoni, Ehud Greenspan et Jasmina Vujic. « Uncertainty Analysis of the TRU-Burning Thorium-Fueled RBWR Using Generalized Perturbation Theory ». Dans 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-68001.

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The RBWR-TR is a thorium-based reduced moderation BWR (RBWR) with a high transuranic (TRU) consumption rate. It is charged with LWR TRU and thorium, and it recycles all actinides an unlimited number of times while discharging only fission products and trace amounts of actinides through reprocessing losses. This design is a variant of the Hitachi RBWR-TB2, which arranges its fuel in a hexagonal lattice, axially segregates seed and blanket regions, and fits within an existing ABWR pressure vessel. The RBWR-TR eliminates the internal axial blanket, eliminates absorbers from the upper reflector, and uses thorium rather than depleted uranium as the fertile makeup fuel. This design has been previously shown to perform comparably to the RBWR-TB2 in terms of TRU consumption rate and burnup, while providing significantly larger margin against critical heat flux. This study examines the uncertainty in key neutronics parameters due to nuclear data uncertainty. As most of the fissions are induced by epithermal neutrons and since the reactor uses higher actinides as well as thorium and 233U, the cross sections have significantly more uncertainty than in typical LWRs. The sensitivity of the multiplication factor (keff) to the cross sections of many actinides is quantified using a modified version of Serpent 2.1.19 [1]. Serpent [2] is a Monte Carlo code which uses delta tracking to speed up the simulation of reactors; in this modified version, cross sections are artificially inflated to sample more collision, and collisions are rejected to preserve a “fair game.” The impact of these rejected collisions is then propagated to the multiplication factor using generalized perturbation theory [3]. Covariance matrices are retrieved for the ENDF/B-VII.1 library [4], and used to collapse the sensitivity vectors to an uncertainty on the multiplication factor. The simulation is repeated for several reactor configurations (for example, with a reduced flow rate, and with control rods inserted), and the difference in keff sensitivity is used to assess the uncertainty associated with the change (the uncertainty in the void feedback and the control rod worth). The uncertainty in the RBWR-TR is found to be dominated by the epithermal fission cross section for 233U in reference conditions, although when the spectrum hardens, the uncertainty in fast capture cross sections of 232Th becomes dominant.

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Cotoros, Ingrid, et Ab Hashemi. « Multilayer Insulation Venting During Payload Depressurization ». Dans ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80658.

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Multilayer Insulation (MLI) blankets consist of closely spaced aluminum coated shields that are spaced apart to reduce heat transfer between the payload and the environment, particularly in vacuum. In space application, satellite systems and sub-systems are wrapped in MLI blankets to thermally isolate them from the environment and achieve thermal control requirements. During spacecraft launch, the payload undergoes a rapid depressurization before reaching steady state condition. The MLI blankets are usually perforated and/or connected at the boundaries with Velcro strips to allow out-gassing. The blankets can lose their integrity and functionality if the depressurization process is too rapid: the out-gassing flow can tear the perforations, and the pressure differential built-up across the blanket can pull the Velcro strips apart. This paper describes the design and modeling of depressurization through X-slits cut into the blanket and Velcro strips taped along the sides. A methodology is developed, and a model for quantifying the pressure differential build-up is described and applied to a payload enclosure aboard a Delta II rocket.

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Sigel, Deborah, Brian P. Trease, Mark W. Thomson, David R. Webb, Paul Willis et P. Doug Lisman. « Application of Origami in the Starshade Spacecraft Blanket Design ». Dans ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-34315.

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A Starshade is a large deployable structure and sole payload of an external occulter. At 34m in diameter or more, starshades are designed to block most of the light from a nearby star so that a small orbiting space telescope can image and characterize the Earth-like exoplanets in orbit around it. The starshade resembles a sunflower with a circular central disk supporting petals that are arrayed around its periphery. The petal edges are precisely shaped to match an optical profile that prevents diffraction. The area circumscribed by the edges must be completely opaque, black, and non-reflective. The petals and ring structure are covered by specially designed deployable blankets that must remain completely opaque even if they become perforated by micrometeorites. The blankets must also not cause any significant on-orbit thermoelastic loads on the lightweight supporting ring and petal structures despite very large differential thermal strains that are developed between these Kapton blankets and the thermally stable composite ring and petal structures. There are two types of blankets: one for the deployable petals and one for the central support disc that is formed by a lightweight deployable ring truss structure. The starshade blankets cover such a large area that they must be unusually lightweight compared to conventional multi-layer insulated (MLI) spacecraft blankets. The blankets must also stow around the central hub of the spacecraft with the deployable ring and petal structures in a highly repeatable fashion. This makes them ideal candidates for origami folding schemes. Based on prior studies of large deployable rigid arrays, we began with variants on the origami flasher to fold the central ring blanket, which is a minimum of 20m in diameter. We looked at the simplest methods for integrating this large blanket with a mechanical ring truss while providing ample optical baffling and little to no thermally induced loads on the structure. Petal blankets were also developed using deployable softgoods with pseudo-mechanical and shingled designs with optically blocking folds for deployment. The design was developed iteratively utilizing a variety of prototypes to explore and demonstrate the interaction between the softgoods and rigid elements.

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Kini, S., A. Fuentes Aznar et H. Ghoneim. « Composite Fabric Blankets for Plastic Gears ». Dans ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-86074.

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Two approaches for increasing the load capacity of plastic gears in general are proposed and investigated: modifying the conventional involute profile of the gear tooth surfaces by applying a parabolic-crowned profile, and introducing a composite fabric, which blankets the surface of the teeth. The investigation is carried out using the finite element method (IGD/ANSYS). A five-tooth model is applied for the gears, and nylon and carbon/nylon are adopted for the materials. The evolution of maximum contact and bending stresses is evaluated over two cycles of meshing for both the pure plastic (nylon) gears and the gears with the composite surface blanket (carbon/nylon) to investigate the process of transfer of load between consecutive pairs of teeth and detect possible edge contacts. The results indicate that selecting the proper parabolic-crowned profile helps to alleviate the contact stress, and more specifically, to reduce the peaks of contact stresses due to edge contacts at the tip of the teeth. The results also indicate that there are an optimum parabolic-crowned profile and an optimum thickness of the composite blanket, which render the lowest maximum level of contact stresses over the cycle of meshing and bending stresses at the fillet. However, this preliminary research work suggests that, for the case considered, the novel idea of composite blanket is inconclusive — though the blanket may protect the plastic core, it itself becomes vulnerable to failure. The idea is being explored more, and the results will be disseminated in a future work.

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Wang, Hongyan, et Xidong Zhang. « Effect of Nature Convection on Heat Transfer in the Liquid LiPb Blanket ». Dans 16th International Conference on Nuclear Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/icone16-48698.

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In some liquid blankets (or liquid blanket module) of fusion reactor, the liquid metal, i.e. LiPb flow, as only tritium breeder is characterized by lower outlet temperature and slower flow velocity that allows the utilization of relatively mature material technology [1–2]. The magnetohydrodynamic (MHD) flow and heat transfer become very complex resulting from the differential heating of walls of the channels, especially adjacent to the First Wall (FW), and internal heat sources inside of the liquid LiPb. The nature convection of the liquid LiPb, due to thermal diffusion, in the poloidal channel adjacent to the FW in the presence of the strong magnetic field of the blanket has been considered and studied. The temperature distribution is changed and there is a strong thermal coupling, modifying importantly the magnitude of the flow. The effect of the buoyancy on pressure driven duct flows has been investigated. The buoyant convection was found to be sufficiently strong to impose its flow pattern on the cross flow in the region of intense volumetric heating.

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Habibi Parsa, Mohammad, et Payam Pournia. « Blank Shape Design Based on Inverse Finite Element Method Using Ideal Forming Theory and a Modified Kinematics Formulation ». Dans ASME 7th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2004. http://dx.doi.org/10.1115/esda2004-58116.

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For stamping of sheet metals and converting them to specific product shapes without failure, the initial blanks should be correctly designed. Otherwise, final products will not be sound. So initial blank design is a critical step in stamping design procedure. In the present paper for calculating the total deformation gradient and its relation to each step’s deformation gradient tensor (F), a modified kinematics formulation will be introduced. This formulation has been used in connection with the ideal forming theory for predicting the initial blank shape of the specified products with defined blank thickness. In the ideal forming theory, each material element is prescribed to deform in a minimum plastic work path and ideal process is obtained when the deformations are most evenly distributed in the final products. The later has been assumed for developing a FEM code to predict the blank shape and size in one step, which has been applied for three different kinds of stampings, cylindrical, square and clover shape cups. The results show the capability of the new algorithm in designing the initial blank shape for stamping products.

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Nogueron, Jose A., Zhang Baorui et Zhou Zhiwei. « Optimal Design for Helium Cooled Solid Breeder Blanket of CFETR ». Dans 2020 International Conference on Nuclear Engineering collocated with the ASME 2020 Power Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/icone2020-16345.

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Abstract On the road to achieving fusion energy production at a commercial level, China has proposed the design of a nuclear fusion reactor based on the tokamak configuration. Aimed to produce self-sustained burning plasma and a closed tritium breeding cycle, this device is expected to provide a bridge between ITER and DEMO designs. The Breeding Blanket (BB) is one of the key technological challenges to be designed in order to guarantee sufficient tritium production, heat removal capabilities and radiation shielding protection. Two preliminary designs of the Helium-Cooled Solid Breeder (HCSB) blanket have been suggested to be subjected to further investigation. Despite the fact that both designs use the same materials, they present completely different geometrical arrangements. In the present analysis, these two concepts of the HCSB are examined, addressing the critical design issues that affect the performance of the system. A neutronic analysis is performed to calculate the Tritium Breeding Ratio (TBR), which is a crucial parameter to meet tritium production requirements. Based on this investigation, the cooling capacity of the reactor is analyzed with the help of a Computational Fluid Dynamic (CFD) software through a dynamic evaluation. Valuable conclusions can be extracted from the results of this work, which can be referenced for investigations regarding further studies of HCSB blankets.

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Tsuji, Y., S. Yoshihara, S. Tsuda, Y. Iriyama et Y. Nakano. « Effect of DLC Coating on Limiting Drawing Ratio of AZ31 Magnesium Alloy Sheet ». Dans ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-10947.

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Magnesium alloys have several advantages that make them attractive for use in structural applications such as a superlight weight, high specific strength, ease of recycling and electromagnetic shielding capability. On the other hand, several disadvantages are associated with manufacturing using magnesium alloys such as the fact that it is practically impossible to apply conventional metal-forming techniques at room temperature without producing defects. Much effort, therefore, has recently been applied to improving the formability of magnesium-based alloys in order that they may realize their full potential. In this study, the methodology of coating the surface of a magnesium alloy with a diamond-like carbon (DLC) coating to increase the surface lubrication performance and for achieve deep drawability is discussed. The DLC acts as a lubricant during the forming process, thus reducing the deformation of the workpieces. Friction tests and deep-drawing tests were carried out to estimate the effect of the DLC coating by the formability of the magnesium alloy. We have compared the properties of non-lubricated blanks with those lubricated a DLC coating and the lubricants and MoS2. The coefficient of friction of the DLC-coated blank was approximately 0.16. Those of the non-lubricated blank and the blanks coated with GM100 and MoS2 were 0.41, 0.26, and 0.17 respectively. Thus, the DLC coating provides a similar or superior level of lubrication when compared with a conventional lubricant. The deep-drawing test was performed to obtain the limiting drawing ratio (LDR). For the DLC-coated blank, deep-drawing was possible at drawing ratio (DR) 2.2. On the other hand, the non-lubricated blank fractured at DR2.0. In the case of GM100 and MoS2, deep-drawing was successful at DR2.2 and DR2.3, respectively. In both friction and deep-drawing tests, the performance of DLC-coated workpieces was compared with that of workpieces coated with the conventional lubricants. The deep-drawing tests were carried out at 200 °C, and the formability of each blank was measured. It was concluded that the use of DLC-coated blanks produces an improvement in the formability of magnesium alloys compared with the use of conventional lubrication techniques.

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Hirose, Takanori, Hiroyasu Tanigawa et Mikio Enoeda. « Manufacturing Technologies of Breeding Blanket Components Using Reduced Activation Ferritic/Martensitic Steel ». Dans ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-26123.

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Put abstract text here. This paper summarizes manufacturing technologies of the water-cooled-solid-breeder (WCSB) blanket module for a fusion reactor using reduced activation ferritic/martensitic steel (RAFM). Although RAFM is very similar to commercial 9 Cr heat resistant steel, RAFM in the blanket is to be used as thin wall structure. Moreover, it is necessary to employ some new manufacturing technologies for the components such as hot-isostatic-pressing (HIP) and fiber-laser-welding (FLW). Some full-scale mock-ups of the blanket have been developed using conventional and newly developed method. The mock-ups have been developed in industrial scale, and the mock-ups demonstrated integrity in the service condition of the blanket without non-nuclear environment. The mock-ups demonstrated their soundness under the service condition of the blanket.

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Liu, M., et C. Cross. « Subsea Pipeline UHB OOS Design : Structural Reliability Analysis ». Dans ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61186.

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Upheaval buckling (UHB) is a major design concern for a trenched and buried subsea pipeline operating at high temperature and pressure. A predictive assessment is necessary during the detailed engineering design and optimisation to evaluate and define any measure that may be utilised for UHB mitigation such as deep trenching, backfilling, blanket or spot rockdumping. A pre-emptive UHB structural reliability analysis (SRA) has to be performed prior to pipeline installation based on the typical trench imperfection out of straightness (OOS) statistics. The SRA results are updated once survey data is made available. A rockdump schedule can be established by incorporating appropriate safety or load factors to address uncertainties in the design parameters and as-built OOS survey measurement accuracy. This paper examines the basis for processing the OOS features from survey data and stochastic distributions assumed for SRA with a view to improving the SRA OOS analysis. A number of OOS issues are considered. To cut conservatism an alternative distribution and interpretation is proposed for the key SRA input parameters with regards to imperfections and survey resolution. The random imperfection height assumption used in the current SRA practice for UHB is thus challenged — the rationale and argument for an alternative approach are constructed through a review of stochastic process theory, additional integrity criteria, a parametric analysis and evaluation of multiple OOS survey data sets. To add to the strength of the argument, a range of engineering issues are discussed in the context of stochastic distributions of imperfections. A worked example and case study is presented leading to a rationally reduced load factor and rockdump volume requirement for OOS UHB mitigation and protection.

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Rapports d'organisations sur le sujet "Blanket theory"

Brandon, Thomas, Abeera Batool, Martha Jimenez, Noah Vroman et Maureen Corcoran. Comparison of levee underseepage analysis methods using blanket theory and finite element analysis. Geotechnical and Structures Laboratory (U.S.), août 2018. http://dx.doi.org/10.21079/11681/28472.

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