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Wood, Claudia Lamm. ""With Unalterable Tenderness": The Courtship and Marriage of St George Tucker and Frances Randolph Tucker." W&M ScholarWorks, 1988. https://scholarworks.wm.edu/etd/1539625471.
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Mayaud, Fontvieille Laure. "La laryngectomie reconstructive de Kambic-Tucker." Saint-Etienne, 1991. http://www.theses.fr/1991STET6211.
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Burke, Janine, and mikewood@deakin edu au. "A Portrait of Albert Tucker, 1914-1960." Deakin University. School of Contemporary Arts, 2001. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20050915.161937.
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González, González Arisbeth. "Desigualdades restringidas y el Teorema de Kuhn y Tucker." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2021. http://hdl.handle.net/20.500.11799/110409.
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Las técnicas de optimización se enfocan en determinar el conjunto de restricciones a seguir para maximizar o minimizar algunos tipos de funciones. Dicha respuesta, en general, es un indicador de tipo "costo", "producción", "ganancia" por mencionar algunos ejemplos. Dicha respuesta se denomina objetivo, y la función asociada se llama función objetivo. Un conjunto de restricciones es un determinado conjunto de valores que toman los factores que intervienen en el problema y que podemos controlar a fin de regular el rendimiento de la función objetivo.
En general, la dificultad en los problemas de optimización radica en que estamos limitados en nuestro poder de decisión.
Los teoremas de Lagrange, Kuhn y Tucker, además de técnicas de programación convexa y otras facilitan las técnicas de optimizar una función sujeta a restricciones.
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Ghorbal, Karim. "Josiah Tucker : biographie intellectuelle d'un économiste du dix-huitième siècle." Paris 8, 2013. http://www.theses.fr/2013PA084062.
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Josiah Tucker a toujours suscité la curiosité, et fut aussi célèbre de son vivant qu’incompris après sa mort. Né en 1713 au Pays de Galles, pasteur de l’église Saint Stephen de Bristol de 1749 à 1793, doyen de Gloucester à partir de 1758, il fut un dignitaire de l’Église d’Angleterre respecté, qui publia plus de soixante-dix articles, tracts et ouvrages sur les sujets les plus polémiques de son temps. Une ambition intellectuelle l’a guidé toute sa vie : celle de créer une science économique au service de la morale chrétienne. Néanmoins, tant sa personne que ses idées n’ont jamais été vraiment comprises. Il est vrai que son discours a de quoi surprendre : Tucker croyait en l’égalité absolue entre les femmes et les hommes, les riches et les pauvres, les Anglais et les étrangers ; mais il haïssait la démocratie et les « droits de l’homme ». Il fustigeait le despotisme français et le dogmatisme catholique, et considérait que le système politique anglais issu de la Glorieuse Révolution était le meilleur au monde ; mais il se réjouissait ouvertement des défaites militaires de son pays, et souhaitait la disparition de l’Empire britannique. C’était un chrétien fervent ; mais à ses yeux, la plus grande menace à laquelle était confronté le christianisme en Angleterre était la diffusion de l’« enthousiasme religieux » des non conformistes. Voilà qui peut expliquer les difficultés des commentateurs à lui attribuer une place claire. Cette thèse tente de saisir la signification de l’œuvre de Tucker, en s’attachant à mettre au jour sa genèse et ses différents usages. Pour ce faire, les contextualisations sociales, institutionnelles, culturelles, et économiques me furent aussi utiles que les contextualisations intertextuelles traditionnellesJosiah Tucker has always aroused curiosity, and was as famous in his lifetime as misunderstood after his death. Born in 1713 in Wales, pastor of St. Stephen’s Church in Bristol from 1749 to 1793, Dean of Gloucester from 1758 to his death, he was a distinguished dignitary of the Church of England, who published more than seventy articles, pamphlets and books concerning the most controversial issues of his time. One intellectual ambition guided him throughout his life: to create an economic science serving Christian principles. However, few people really understood his ideas. It is true that what he said was surprising: Tucker believed in absolute equality between women and men, rich and poor, Englishmen and foreigners; but he hated democracy and “human rights”. He castigated the French despotism and the Catholic dogma, and considered that the English political system since the Glorious Revolution was the best in the world, but he openly rejoiced at military defeats of his country, and wished the entire and complete demise of the British Empire. He was a devout Christian, but for him, the greatest threat to Christianity in England was the dissemination of “religious enthusiasm”. This may explain the difficulties of commentators to assign him a clear place in the history of ideas. This thesis tries to understand the work of Tucker, by uncovering its genesis and its various uses through ages, focusing on different contexts, whatever they may be (social, cultural, institutional, etc. )
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Arnroth, Lukas. "Speeding up PARAFAC : Approximation of tensor rank using the Tucker core." Thesis, Uppsala universitet, Statistiska institutionen, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-353287.
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In this paper, the approach of utilizing the core tensor from the Tucker decomposition, in place of theuncompressed tensor, for nding a valid tensor rank for the PARAFAC decomposition is considered.Validity of the proposed method is investigated in terms of error and time consumption. As thesolutions of the PARAFAC decomposition are unique, stability of the solutions through split-halfanalysis is investigated. Simulated and real data are considered. Although, no general validity ofthe method could be observed, the results for some datasets look promising with 10% compressionin all modes. It is also shown that increased compression does not necessarily imply less timeconsumption.
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Battermann, Astrid. "Preconditioning of Karush--Kuhn--Tucker Systems arising in Optimal Control Problems." Thesis, Virginia Tech, 1996. http://hdl.handle.net/10919/9579.
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This work is concerned with the construction of preconditioners for indefinite linear systems. The systems under investigation arise in the numerical solution of quadratic programming problems, for example in the form of Karush--Kuhn--Tucker (KKT) optimality conditions or in interior--point methods. Therefore, the system matrix is referred to as a KKT matrix. It is not the purpose of this thesis to investigate systems arising from general quadratic programming problems, but to study systems arising in linear quadratic control problems governed by partial differential equations.
The KKT matrix is symmetric, nonsingular, and indefinite. For the solution of the linear systems generalizations of the conjugate gradient method, MINRES and SYMMLQ, are used. The performance of these iterative solution methods depends on the eigenvalue distribution of the matrix and of the cost of the multiplication of the system matrix with a vector. To increase the performance of these methods, one tries to transform the system to favorably change its eigenvalue distribution. This is called preconditioning and the nonsingular transformation matrices are called preconditioners. Since the overall performance of the iterative methods also depends on the cost of matrix--vector multiplications, the preconditioner has to be constructed so that it can be applied efficiently.
The preconditioners designed in this thesis are positive definite and they maintain the symmetry of the system. For the construction of the preconditioners we strongly exploit the structure of the underlying system. The preconditioners are composed of preconditioners for the submatrices in the KKT system. Therefore, known efficient preconditioners can be readily adapted to this context. The derivation of the preconditioners is motivated by the properties of the KKT matrices arising in optimal control problems. An analysis of the preconditioners is given and various cases which are important for interior point methods are treated separately. The preconditioners are tested on a typical problem, a Neumann boundary control for an elliptic equation. In many important situations the preconditioners substantially reduce the number of iterations needed by the solvers. In some cases, it can even be shown that the number of iterations for the preconditioned system is independent of the refinement of the discretization of the partial differential equation.Master of Science
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Lee, Amanda (Amanda Joan). "Survival tucker : aboriginal dietary intake and a successful community-based nutrition intervention project." Thesis, The University of Sydney, 1992. http://hdl.handle.net/2123/9463.
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Grupenhoff, Richard L. "Whatever the occasion demands : the stage and screen career of Lorenzo Tucker, the Colored Valentino /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487267024995456.
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Tucker, Ronald A. Jr. "The effects of prescribed fire on riparian groundwater." Thesis, Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/tucker/TuckerR0507.pdf.
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Mattia, Joan Plubell. "Walking the Rift : Alfred Robert Tucker in East Africa, idealism and imperialism, 1890 – 1911." Thesis, University of Birmingham, 2007. http://etheses.bham.ac.uk//id/eprint/119/.
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With stereotypes of imperial complicity and idealistic fantasy firmly in place, tentative assumptions as to the motives of early missionaries often prove less than satisfactory. The need for new master narratives which move beyond the old paradigms of Western expansion and African victimization are being called for by scholars of both North and South; narratives which allow room for strong archival evidence of an egalitarian joint endeavor and African cultural vitality without avoiding the investment in imperialism practiced by colonial personnel. Based on extensive archival research this study advocates an alternative proposal; missionaries caught in the grinding of contradictory opposites. Alfred Robert Tucker, as a professional artist, captured this tug-of-war on canvas but similar dichotomies are found in his approach, as a bishop and Church Missionary Society Director, to marriage contracts, slavery, mission and church organizational structure, alliance with the colonial government and African partnership. Tucker, neither a consistent imperialist nor a complete egalitarian idealist, operated in both spheres without creating a third. This thesis is a piece of revisionist historiography of the Victorian encounter with Africa – a specific micro-narrative questioning the old consensus and calling for a wider discussion and a shift in perspective.
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Griffiths, Tudor Francis Lloyd. "Bishop A.R. Tucker of Uganda and the implementation of an evangelical tradition of mission." Thesis, University of Leeds, 1998. http://etheses.whiterose.ac.uk/2331/.
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The thesis deals with A. R. Tucker and the implementation of an evangelical tradition of mission, as represented by the Church Missionary Society, in Uganda where he was Bishop 1890-1911. Any evangelical tradition claims to be Biblical, and so three probes are made into the New Testament perspective on mission. The Acts of the Apostles was a foundation text for nineteenth-century missionaries, and is considered along with a complementary discussion of mission in John’s Gospel and Paul’s letter to the Philippians. This discussion uncovers tensions relating to the relationship between older and younger churches, to finance, to the development of local leadership and responsibility, to the relationship with political authorities and wider issues of contextualisation that are echoed in both Venn and Tucker. Although Venn as Hon. Secretary of C.M.S. was largely responsible for shaping the Society’s tradition of mission in the mid nineteenth century, its implementation was often frustrated by unwilling missionaries. Whereas Venn was an administrator based in London, Tucker’s locus of activity was in East Africa before 1897 and specifically Uganda thereafter. Tucker’s theological position and spirituality bore a marked resemblance to that of Venn. He worked when the prevailing socio-political context was a Protectorate mentality, which militated against a radical implementation of the principles and concerns developed in Venn’s time. At the start of the twentieth century Uganda was held in high repute in missionary circles, but the thesis questions whether this can be wholly justified. Inasmuch as the reputation may be defended, Tucker’s was a limited responsibility for the success. In the areas of the development of indigenous ordained ministry, encouragement of evangelism and church-planting, defence of Africans whom he felt were being exploited, insistence on local financial resourcing of the church, ecumenical vision, and the desire to integrate the missionary presence within the African church, Tucker’s work was clearly in the evangelical tradition developed by Venn. But in each of those areas we identity tensions and ambivalence also. This returns us to the New Testament theme that Christian mission, although fundamentally the Missio Dei, is in fact entrusted to fallible people by the grace of God.
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Mayerhofer, Hubert [Verfasser], and Paul [Akademischer Betreuer] Tucker. "Structural studies of the Arabidopsis thaliana ethylene signal transduction pathway / Hubert Mayerhofer ; Betreuer: Paul Tucker." Heidelberg : Universitätsbibliothek Heidelberg, 2011. http://d-nb.info/1179783050/34.
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Rollins, Adam W. "Analysis of red spruce (Picea rubens) regeneration in Pocahontas, Randolph, and Tucker counties, West Virginia." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3941.
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Thesis (M.S.)--West Virginia University, 2005.Title from document title page. Document formatted into pages; contains vi, 83 p. : ill. (some col.), maps (some col.). Includes abstract. Includes bibliographical references (p. 79-83).
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Araújo, Lúcio Borges de. "Seleção e análise dos modelos PARAFAC e Tucker e gráfico triplot com aplicação em interação tripla." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/11/11134/tde-05082009-075957/.
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O presente trabalho tem os seguintes objetivos: propor uma sistemática para o estudo e a interpretação da estabilidade e adaptabilidade fenotípica, através de duas técnicas de análise multiway (PARAFAC e Tucker3); propor a construção de um gráfico, denominado de Triplot, que possibilita avaliar as relç]oesoes entre os 3 modos (genótipos, locais e anos); implementar uma rotina computacional para a análise de dados, segundo os modelos multiway; implementar uma rotina computacional para a construção do Triplot. Os dados a serem uti- lizados são relativos a experimentos com 13 genótipos de feijão que foram conduzidos em 9 ex- perimentos distintos constituídos pelos anos agrícolas de 2000/2001, 2001/2002 e 2005/2006, pelos municípios de Dourados e Aquidauana, sendo que os experimentos foram instalados na época das águas (Dourados)e também na época da seca (Dourados e Aquidauana). Cada local é constituído de município e uma época de instalação. Os resultados indicaram que o gráfico triplot e joint plot, facilitam o entendimento da interação tripla e traz ao pesquisador informações mais reais sobre a interação tripla, do que a modelagem AMMI de duas entradas; o gráfico triplot, ajuda a identificar genótipos, locais e anos estáveis, dentro de um grande grupo de genótipos, locais e anos; de uma maneira geral recomenda-se, utilizar o triplot e o joint plot juntos, para obter melhores interpretações dos resultados; dentre os genótipos estudados, o genótipo 6 é o que menos contribui para a interação e o os genótipos 12, 9 e 5 são os que mais contribuem para a interação.The present work has the following objectives: to propose a systematics for the study and the interpretation of the phenotypic stability and adaptability, through several multiway models (PARAFAC and Tucker3); to propose a graphic, called of Triplot, that it makes possible to evaluate the relations between the 3 ways (genotypes, locations and years); to implement a computational routine for the data analysis, according multiway models; to implement a computational routine for the construction of Triplot. The used data are relative the experiments with 13 genotypes of beans that had been lead in 9 experimental distinct ones constituted by agricultural years of 2000/2001, 2001/2002 and 2005/2006, by Dourados and Aquidauana cities, where the experiments had been installed at the time of waters (Dourados) and also at the time of dries (Dourados and Aquidauana). Each location is constituted of city and time of installation. The results indicated that the graphic triplot and joint plot, facilitate the agreement of triple interaction and bring to the researcher more real information about triple interaction, of what AMMI model of two way; the graphic triplot, helps to identify stabels genotypes, locations and years, inside of a great group of genotypes, location and years; in a general recommend to use triplot and joint plot together, to get better interpretations of the results; the genotype 6 is what less contributes for the triple interaction and genotypes 12, 9 and 5 are the that more contribute for the interaction.
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Jones, Jennifer A. "Aboriginal women's autobiographical narratives and the politics of collaboration /." Title page, contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09PH/09phj7761.pdf.
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Amaro, Gutierrez Jordan. "Modelagem da composição do syngas obtido de gaseificadores de leito fluidizado utilizando os multiplicadores de Kuhn-Tucker /." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/153583.
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Este trabalho tem como objetivo desenvolver um modelo de equilíbrio químico modificado para determinar a composição do syngas (gás de síntese), obtida a partir da gaseificação da biomassa em gaseificadores de leito fluidizado. Para este estudo, foi aplicado um processo de otimização para determinar os fatores de correção (que modificam as constantes de equilíbrio químico), a eficiência de conversão de carbono e a entalpia da reação. Os agentes de gaseificação considerados foram ar, vapor, ar-vapor e ar-vapor-oxigênio. No método de otimização foram utilizados os multiplicadores de Kuhn–Tucker para obter pequenos erros RMS. Foram selecionadas 76 composições experimentais de syngas. Entre estas composições, 60 foram utilizadas para obter correlações para o fator de correção, a eficiência de conversão do carbono e a entalpia da reação. Em seguida, um modelo de equilíbrio químico modificado foi elaborado selecionando estas correlações. O modelo de equilíbrio químico modificado foi validado mostrando uma boa precisão para a determinação da composição do syngas, obtendo-se erros RMS entre 0,94 e 4,84.
This work aims to develop a modified chemical equilibrium model to accurately determine the syngas (synthesis gas) composition, as obtained from fluidized bed gasifiers. In order to do so, an optimization process was applied to determine the correction factors (which modify the chemical equilibrium constants), the carbon conversion efficiency and the enthalpy of the reaction. The gasification agents considered were air, steam, air–steam, and air–steam–oxygen. The optimization method were used the Kuhn–Tucker multipliers in order to obtain small RMS errors. A total of 76 experimental compositions of syngas were selected. Among these data, 60 were used to obtain correlations for the correction factor, the carbon conversion efficiency and the enthalpy of the reaction. Then, a modified chemical equilibrium model was developed by selecting these correlations. The modified chemical equilibrium model was validated showing very good accuracy for the determination of the syngas composition, the RMS error were found to be in the between 0.94 and 4.84.
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Lemerle, Pierre. "Optimisation des structures selon des critères imposés par la discrétion acoustique des navires." Ecully, Ecole centrale de Lyon, 1994. http://bibli.ec-lyon.fr/exl-doc/TH_T1576_plemerle.pdf.
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Dans cette étude, nous avons développé des stratégies d'optimisation adaptées au problème de la discrétion acoustique des navires. Nous rappelons dans un premier temps les critères imposés par la discrétion acoustique et les principes d'atténuation qui permettent de garantir leur application dans la pratique. Ces criteres s'expriment en termes de flexibilité et transmissibilité dynamiques et concernent une large gamme fréquentielle. Nous montrons comment améliorer le comportement dynamique des structures, relativement aux critères précités : nous avons conçu deux méthodes qui permettent de dimensionner des absorbeurs dynamiques, à partir des données expérimentales. Nous développons ensuite une méthode d'optimisation de structures. L'objectif est alors de minimiser la masse de la structure avec des contraintes en flexibilités ponctuelles et transmissibilités. L'originalité de la méthode repose sur deux points : l'approche modale, en utilisant la notion de paramètres effectifs et la construction d'un algorithme fondé sur la condition d'optimalité de Kiihn-Tucker. Enfin, nous montrons comment entendre cette démarche à l'optimisation de structures composites (monocouches et sandwich), en prenant en compte l'amortissement par ajout de matériaux viscoélastiques dans une formulation en modes complexes. Tout au long de cette étude, de nombreux résultats numériques sont présentés pour illustrer les diverses stratégies d'optimisationIn this study, some strategies of optimization have been conceived, for the problem of ship silencing. For this problem, criteria can be expressed and we present principles of attenuation which can ensure their satisfaction in practice. These criteria can be written in terms of dynamical flexibilities and transmissibilities over a wide range of frequency. We show how to improve the dynamical behaviour of structures with respect to the criteria : two methods are presented for the design of dynamic absorbers. Both can deal with experimental data. Then, we present one method of structural optimization. The objective is to minimize the mass of the structure with constraints on point flexibilities and transmissibilities. This method is based on two points : first, the modal approach with modal effective parameters and second the algorithm is built upon Kuhn-Tucker optimality condition. At last, we show how this approach can be extended to the optimization of composite structures, by taking into account damping with a complex mode shapes formulation. Numerical results are presented
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Immler, Fabian [Verfasser], Tobias [Akademischer Betreuer] Nipkow, Tobias [Gutachter] Nipkow, and Warwick [Gutachter] Tucker. "A Verified ODE Solver and Smale's 14th Problem / Fabian Immler ; Gutachter: Tobias Nipkow, Warwick Tucker ; Betreuer: Tobias Nipkow." München : Universitätsbibliothek der TU München, 2018. http://d-nb.info/1163013404/34.
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Burdette, Sarah Beth. "Effects of excessive nitrogen deposition on foliar nutrient dynamics, nutrient concentrations, and nutrient ratios in a Central Appalachian hardwood forest." Huntington, WV : [Marshall University Libraries], 2002. http://www.marshall.edu/etd/descript.asp?ref=78.
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Thesis (M.S.)--Marshall University, 2002.Title from document title page. Document formatted into pages; contains x, 52 p. with maps and illustrations. Includes bibliographical references (p. 48-52).
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Lutton, Alison Mary. "Authorship and the production of literary value, 1982-2012 : Bret Easton Ellis, Paul Auster, J.T. LeRoy, and Tucker Max." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:3aa64675-73a2-42a8-be24-cb75f034e9de.
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Definitions of celebrity authorship and material textuality at the turn of the twenty-first century have predominantly emphasised the implicitly negative aspects of contemporary developments in the literary marketplace. Particularly prominent are arguments that the practice of authorship has become subject to homogenisation by the matrix of celebrity in which successful writers are now expected to function; and, further, that the changing nature of texts themselves and the ways in which they are marketed is eroding the implicitly superior position traditionally held by literature in the cultural marketplace. This thesis views such readings as pessimistic, and offers an alternative, seeking to formulate a new critical approach to literary value in the contemporary sphere which would appreciate notions of celebrity, populism, and digital mediation as integral and productive aspects of how literary value is formed today. Through in-depth focus on the cases of a number of unconventional contemporary American authors whose work demonstrates differing, innovative approaches to the process of authorship, this thesis exposes the ways in which contemporary, atypically ‘literary’ instances of writing can and do work within and develop beyond traditional conceptualisations of authorship and literary value. Bret Easton Ellis and Jay McInerney, largely critically considered prototypical ‘celebrity’ authors, are in the first chapter reconsidered as writers whose understanding of their position within the literary marketplace affords them a self-conscious, critical perspective on the notion of celebrity in their work and public personae. The productively self-conscious author-figure is reconsidered in the second chapter, which reads the individual and joint works of author Paul Auster and visual artist Sophie Calle as foregrounding the process of creative collaboration as uniquely illuminating and transformative within the contemporary literary sphere. The notion of dual authorship is revisited and reconceptualised in the third chapter, which considers JT LeRoy and the practice of hoax authorship, outlining how this process forces the reformulation of literary value, particularly in a contemporary setting in which authors are accountable for their work in newer, more visible ways. The final chapter expands these previously-introduced themes to consider bloggers-turned-authors, particularly Tucker Max and Julie Powell, and the impact of the merging of old and new textualities on both the orientation of the figure of the writer and the way in which value is attached to his texts by readers. Ultimately, the unconventional nature of these examples is shown to belie the universality of the representations of value they enact, contributing to a full and salient account of how literary value is determined at the beginning of the twenty-first century.
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Aycho, Flores Milton Angelino, and Flores Milton Angelino Aycho. "Optimización en espacios de Banach y aplicaciones." Doctoral thesis, Universidad Nacional Mayor de San Marcos, 2015. http://cybertesis.unmsm.edu.pe/handle/cybertesis/4481.
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En este trabajo se estudia el problema de optimización mín xES f(x) donde S es un subconjunto convexo en un espacio normado X f : X (flecha funcional) R. Asimismo, se presenta una extensión del teorema de Kuhn-Tucker que resuelve el problema de minimización sobre el conjunto S = {x E S/g(x) E -C donde C ∧ h(x) = 0Z}es un cono de orden y h, g dos funcionales Fréchet diferenciables.Tesis
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Tasouri, Evangelia [Verfasser], and Kerry Lee [Akademischer Betreuer] Tucker. "Analysis of the role of primary cilium in the dopaminergic neurogenesis in mouse embryonic midbrain / Evangelia Tasouri ; Betreuer: Kerry Lee Tucker." Heidelberg : Universitätsbibliothek Heidelberg, 2016. http://d-nb.info/1180608224/34.
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Conway, Jordan A. "Living in a Gangsta’s Paradise: Dr. C. DeLores Tucker’s Crusade Against Gansta Rap Music in the 1990s." VCU Scholars Compass, 2015. http://scholarscompass.vcu.edu/etd/3812.
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This project examines Dr. C. DeLores Tucker’s efforts to abolish the production and distribution of gangsta rap to the American youth. Though her efforts were courageous and daring, they were not sufficient. The thesis will trace Tucker’s crusade beginning in 1992 through the end of the 1990s. It brings together several themes in post-World War II American history, such as the issues of race, gender, popular culture, economics, and the role of government. The first chapter thematically explores Tucker’s crusade, detailing her methodology and highlighting pivotal events throughout the movement. The second chapter discusses how opposition from rap artists, and the music industry, media coverage of Tucker and her followers, and resistance from members of Congress contributed to the failure of her endeavor.
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Hudnall, Patrick F. "Characterization and recommendations for the remediation of acid mine drainage impacted streams." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=3135.
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Thesis (M.S.)--West Virginia University, 2003.Title from document title page. Document formatted into pages; contains xii, 170 p. : ill. (some col.), maps (part col.). Includes abstract. Includes bibliographical references (p. 112-116).
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Willson, David A. "Soil nitrogen dynamics and herbaceous layer diversity in nitrogen saturated watersheds of Fernow Experimental Forest, West Virginia." Huntington, WV : [Marshall University Libraries], 2004. http://www.marshall.edu/etd/descript.asp?ref=457.
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Thesis (M.S.)--Marshall University, 2004.Title from document title page. Includes abstract. Document formatted into pages; contains vii, 120 p. including illustrations. Includes bibliographical references (p. 110-114).
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Aycho, Flores Milton Angelino. "Optimización en espacios de Banach y aplicaciones." Doctoral thesis, Universidad Nacional Mayor de San Marcos, 2015. https://hdl.handle.net/20.500.12672/4481.
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En este trabajo se estudia el problema de optimización mín xES f(x) donde S es un subconjunto convexo en un espacio normado X f : X (flecha funcional) R. Asimismo, se presenta una extensión del teorema de Kuhn-Tucker que resuelve el problema de minimización sobre el conjunto S = {x E S/g(x) E -C donde C ∧ h(x) = 0Z}es un cono de orden y h, g dos funcionales Fréchet diferenciables.Tesis
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Rudnicki, Catharine W. M. "In Her Words: The Historically Edited Diary of Elizabeth Tucker Coalter Bryan, in the Context of the History of Southern Antebellum Women." Connect to resource online, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1210874611.
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Westerfield, Jane R. "An investigation of the life styles and performance of three singer-comediennes of American vaudeville : Eva Tanguay, Nora Bayes and Sophie Tucker." Virtual Press, 1987. http://liblink.bsu.edu/uhtbin/catkey/515977.
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In the early days of the twentieth century when vaudeville was the most popular theatrical entertainment in America, there were a number of female singers who became its star performers. In the process of conducting preliminary research for a dissertation topic on female singers of this era, it quickly became evident that while much has been written about opera singers of that era, only limited material was available on female vaudeville singers. Furthermore, the small amount of information which was available was so randomly scattered among various sources that it was difficult to perceive a composite picture of these performers.The purpose of this investigation into the musical styles and repertoire of three great female singer-comediennes of early vaudeville--Eva Tanguay, Nora Bayes and Sophie Tucker--is to determine what the reasons were for their tremendous popularity. Because vaudeville was the prime source of entertainment before the days of mass media, the American public was quick to make stars of many of its performers. This study seeks to ascertain what it was about thesewomen's particular musical styles, repertoire and personalities which made them so interesting and caused the public to make them vaudeville stars. Though there are certainly other female singers of this period which are also of interest:, these three were chosen because they were unique.This study is presented as a series of articles with separate chapters devoted to Eva Tanguay, Nora Bayes and Sophie Tucker as individuals. These chapters include biographical material, especially from books about vaudeville performers, and also explore critical reviews and other reports on their work from such sources as "Variety," "Theatre Magazine," and various newspaper accounts. Analysis of these sources on each individual within the chapters is included as well. The final chapter contains a summary of the research and a discussion of what conclusions were reached about the musical styles and repertoire of Eva Tanguay, Nora Bayes and Sophie Tucker as a result of this investigation.In addition to discovering the reasons for these performers' popularity and appeal, it is hoped that a viable by-product of this research has been to arouse renewed public interest in these three fascinating ladies of early vaudeville.
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Luu, Thi Hieu. "Amélioration du modèle de sections efficaces dans le code de cœur COCAGNE de la chaîne de calculs d'EDF." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066120/document.
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Afin d'exploiter au mieux son parc nucléaire, la R&D d'EDF est en train de développer une nouvelle chaîne de calcul pour simuler le cœur des réacteurs nucléaires avec des outils à l'état de l'art. Ces calculs nécessitent une grande quantité de données physiques, en particulier les sections efficaces. Dans la simulation d'un cœur complet, le nombre de valeurs des sections efficaces est de l'ordre de plusieurs milliards. Ces sections efficaces peuvent être représentées comme des fonctions multivariées dépendant de plusieurs paramètres physiques. La détermination des sections efficaces étant un calcul complexe et long, nous pouvons donc les précalculer en certaines valeurs des paramètres (caluls hors ligne) puis les évaluer en tous points par une interpolation (calculs en ligne). Ce processus demande un modèle de reconstruction des sections efficaces entre les deux étapes. Pour réaliser une simulation plus fidèle du cœur dans la nouvelle chaîne d'EDF, les sections efficaces nécessitent d'être mieux représentées en prenant en compte de nouveaux paramètres. Par ailleurs, la nouvelle chaîne se doit d'être en mesure de calculer le réacteur dans des situations plus larges qu'actuellement. Le modèle d'interpolation multilinéaire pour reconstruire les sections efficaces est celui actuellement utilisé pour répondre à ces objectifs. Néanmoins, avec ce modèle, le nombre de points de discrétisation augmente exponentiellement en fonction du nombre de paramètres ou de manière considérable quand on ajoute des points sur un des axes. Par conséquence, le nombre et le temps des calculs hors ligne ainsi que la taille du stockage des données deviennent problématique. L'objectif de cette thèse est donc de trouver un nouveau modèle pour répondre aux demandes suivantes : (i)-(hors ligne) réduire le nombre de précalculs, (ii)-(hors ligne) réduire le stockage de données pour la reconstruction et (iii)-(en ligne) tout en conservant (ou améliorant) la précision obtenue par l'interpolation multilinéaire. D'un point de vue mathématique, ce problème consiste à approcher des fonctions multivariées à partir de leurs valeurs précalculées. Nous nous sommes basés sur le format de Tucker - une approximation de tenseurs de faible rang afin de proposer un nouveau modèle appelé la décomposition de Tucker . Avec ce modèle, une fonction multivariée est approchée par une combinaison linéaire de produits tensoriels de fonctions d'une variable. Ces fonctions d'une variable sont construites grâce à une technique dite de décomposition en valeurs singulières d'ordre supérieur (une « matricization » combinée à une extension de la décomposition de Karhunen-Loève). L'algorithme dit glouton est utilisé pour constituer les points liés à la résolution des coefficients dans la combinaison de la décomposition de Tucker. Les résultats obtenus montrent que notre modèle satisfait les critères exigés sur la réduction de données ainsi que sur la précision. Avec ce modèle, nous pouvons aussi éliminer a posteriori et à priori les coefficients dans la décomposition de Tucker. Cela nous permet de réduire encore le stockage de données dans les étapes hors ligne sans réduire significativement la précisionIn order to optimize the operation of its nuclear power plants, the EDF's R&D department iscurrently developing a new calculation chain to simulate the nuclear reactors core with state of the art tools. These calculations require a large amount of physical data, especially the cross-sections. In the full core simulation, the number of cross-section values is of the order of several billions. These cross-sections can be represented as multivariate functions depending on several physical parameters. The determination of cross-sections is a long and complex calculation, we can therefore pre-compute them in some values of parameters (online calculations), then evaluate them at all desired points by an interpolation (online calculations). This process requires a model of cross-section reconstruction between the two steps. In order to perform a more faithful core simulation in the new EDF's chain, the cross-sections need to be better represented by taking into account new parameters. Moreover, the new chain must be able to calculate the reactor in more extensive situations than the current one. The multilinear interpolation is currently used to reconstruct cross-sections and to meet these goals. However, with this model, the number of points in its discretization increases exponentially as a function of the number of parameters, or significantly when adding points to one of the axes. Consequently, the number and time of online calculations as well as the storage size for this data become problematic. The goal of this thesis is therefore to find a new model in order to respond to the following requirements: (i)-(online) reduce the number of pre-calculations, (ii)-(online) reduce stored data size for the reconstruction and (iii)-(online) maintain (or improve) the accuracy obtained by multilinear interpolation. From a mathematical point of view, this problem involves approaching multivariate functions from their pre-calculated values. We based our research on the Tucker format - a low-rank tensor approximation in order to propose a new model called the Tucker decomposition . With this model, a multivariate function is approximated by a linear combination of tensor products of one-variate functions. These one-variate functions are constructed by a technique called higher-order singular values decomposition (a « matricization » combined with an extension of the Karhunen-Loeve decomposition). The so-called greedy algorithm is used to constitute the points related to the resolution of the coefficients in the combination of the Tucker decomposition. The results obtained show that our model satisfies the criteria required for the reduction of the data as well as the accuracy. With this model, we can eliminate a posteriori and a priori the coefficients in the Tucker decomposition in order to further reduce the data storage in online steps but without reducing significantly the accuracy
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小山, 悟史, Satoshi KOYAMA, 秀幸 畔上, and Hideyuki AZEGAMI. "形状最適化問題の解法における多制約の取り扱い." 日本機械学会, 2003. http://hdl.handle.net/2237/12171.
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Raiter, Keren. "Bush tucker and dieback : the threat of dieback caused by Phytophthora cinnamomi to plants of significance to Noongar people of Western Australia's south coast." Thesis, Raiter, Keren (2005) Bush tucker and dieback : the threat of dieback caused by Phytophthora cinnamomi to plants of significance to Noongar people of Western Australia's south coast. Honours thesis, Murdoch University, 2005. https://researchrepository.murdoch.edu.au/id/eprint/32600/.
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Oliveira, Fabiana Rodrigues de. "Estudo de alguns métodos clássicos de otimização restrita não linear." Universidade Federal de Uberlândia, 2012. https://repositorio.ufu.br/handle/123456789/16795.
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Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorIn this work some classical methods for constrained nonlinear optimization are studied. The mathematical formulations for the optimization problem with equality and inequality constrained, convergence properties and algorithms are presented. Furthermore, optimality conditions of rst order (Karush-Kuhn-Tucker conditions) and of second order. These conditions are essential for the demonstration of many results. Among the methods studied, some techniques transform the original problem into an unconstrained problem (Penalty Methods, Augmented Lagrange Multipliers Method). In others methods, the original problem is modeled as one or as a sequence of quadratic subproblems subject to linear constraints (Quadratic Programming Method, Sequential Quadratic Programming Method). In order to illustrate and compare the performance of the methods studied, two nonlinear optimization problems are considered: a bi-dimensional problem and a problem of mass minimization of a coil spring. The obtained results are analyzed and confronted with each other.
Neste trabalho são estudados alguns métodos clássicos de otimização restrita não linear. São abordadas a formulação matemática para o problema de otimização com restrições de igualdade e desigualdade, propriedades de convergência e algoritmos. Além disso, são relatadas as condições de otimalidade de primeira ordem (condições de Karush-Kuhn-Tucker) e de segunda ordem. Estas condições são essenciais para a demonstração de muitos resultados. Dentre os métodos estudados, algumas técnicas transformam o problema original em um problema irrestrito (Métodos de Penalidade, Método dos Multiplicadores de Lagrange Aumentado). Em outros métodos, o problema original é modelado como um ou uma seqüência de subproblemas quadráticos sujeito _a restrições lineares (Método de Programação Quadrática, Método de Programação Quadrática Seqüencial). A fim de ilustrar e comparar o desempenho dos métodos estudados são considerados dois problemas de otimização não linear: um problema bidimensional e o problema de minimização da massa de uma mola helicoidal. Os resultados obtidos são examinados e confrontados entre si.
Mestre em Matemática
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Augustin, Bertho. "Comparison of Different Approaches to Estimating Budgets for Kuhn-Tucker Demand Systems: Applications for Individuals' Time-Use Analysis and Households' Vehicle Ownership and Utilization Analysis." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5174.
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This thesis compares different approaches to estimating budgets for Kuhn-Tucker (KT) demand systems, more specifically for the multiple discrete-continuous extreme value (MDCEV) model. The approaches tested include: (1) The log-linear regression approach (2) The stochastic frontier regression approach, and (3) arbitrarily assumed budgets that are not necessarily modeled as a function of decision maker characteristics and choice-environment characteristics.
The log-linear regression approach has been used in the literature to model the observed total expenditure as way of estimating budgets for the MDCEV models. This approach allows the total expenditure to depend on the characteristics of the choice-maker and the choice environment. However, this approach does not offer an easy way to allow the total expenditure to change due to changes in choice alternative-specific attributes, but only allows a reallocation of the observed total expenditure among the different choice alternatives. To address this issue, we propose the stochastic frontier regression approach. The approach is useful when the underlying budgets driving a choice situation are unobserved, but only the expenditures on the choice alternatives of interest are observed. The approach is based on the notion that consumers operate under latent budgets that can be conceived (and modeled using stochastic frontier regression) as the maximum possible expenditure they are willing to incur.
To compare the efficacy of the above-mentioned approaches, we performed two empirical assessments: (1) The analysis of out-of-home activity participation and time-use (with a budget on the total time available for out-of-home activities) for a sample of non-working adults in Florida, and (2) The analysis of household vehicle type/vintage holdings and usage (with a budget on the total annual mileage) for a sample of households in Florida. A comparison of the MDCEV model predictions (based on budgets from the above mentioned approaches) demonstrates that the log-linear regression approach and the stochastic frontier approach performed better than arbitrarily assumed budgets approaches. This is because both approaches consider heterogeneity in budgets due to socio-demographics and other explanatory factors rather than arbitrarily imposing uniform budgets on all consumers. Between the log-linear regression and the stochastic frontier regression approaches, the log-linear regression approach resulted in better predictions (vis-à-vis the observed distributions of the discrete-continuous choices) from the MDCEV model. However, policy simulations suggest that the stochastic frontier approach allows the total expenditures to either increase or decrease as a result of changes in alternative-specific attributes. While the log-linear regression approach allows the total expenditures to change as a result of changes in relevant socio-demographic and choice-environment characteristics, it does not allow the total expenditures to change as a result of changes in alternative-specific attributes.
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Sivaraman, Vijayaraghavan. "A Theoretical and Methodological Framework to Analyze Long Distance Pleasure Travel." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/6026.
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The United States (US) witnessed remarkable growth in annual long distance travel over the past few decades. Over half of the long distance travel in the US is made for pleasure, including visiting friends and relatives (VFR) and leisure activities. This trend could continue with increased use of information and communication technologies for socialization, and enhanced mobility being achieved using fuel-efficient (electric/hybrid) and technology enhanced vehicles. Despite these developments, and recent interest to implement alternate mass transit options to serve this market, not much exists on the measurement, analysis and modeling of long distance pleasure travel in the U.S.
Statewide and national models are used to estimate long distance travel, but these are predominantly trip-based models, making it difficult to understand long distance trips as collection of household-level travel behavior. This form of travel behavior has been studied a lot in tourism, but in a piecemeal manner, such as to (from) a specific destination. Further, most of these studies are confined to analyzing leisure market, with VFR market gaining recognition only recently. In essence, annual household long distance pleasure travel behavior needs to be studied in a comprehensive manner rather than as isolated trips. This is because, most of these household travel decisions are undertaken considering their annual time and monetary budget, and their perceived cost to travel to one (or more) destination for given pleasure purpose on one (or more) occasion using a given mode of travel. Thus, the main objective of this dissertation is to develop a comprehensive behavioral model framework to analyze the above-discussed annual household long distance pleasure travel choices.
To start the above effort, it is first required to collect detailed annual household travel data, last collected over two decades ago (e.g.: ATS, 1995). No such recent effort has been pursued due to the significant labor and economic resource required to undertake it. There exist recent surveys (NHTS, 2001), but collected over a shorter (four week) period, and require significant processing even to arrive at aggregate annual travel estimates. Second, besides surveys, there is a need for additional data to estimate households’ annual pleasure travel budget, and their cost to travel and stay at each of their potential destination choices, which are not readily available.
Thus, as the first goal, this dissertation analyzes long distance travel reported across historical surveys (NPTS; ATS; NHTS), to understand the differences in their definition, enumeration of purpose and collection methods. The intent here is twofold, first to conceive a method to estimate annual travel from surveys with shorter collection period. Further, the second intent is to gather travel patterns from these historical datasets such that it informs the second goal of this dissertation, i.e. development of a behavioral framework to analyze annual household pleasure travel. To this effect, this research also analyzes pleasure expenditures using Consumer Expenditure Survey (CEX, BLS) data. Interestingly, the analysis reveals CEX pleasure travel expenditure pattern to be similar to the travel pattern reported for the same market segments in travel survey (ATS).
Importantly, the above analysis informs the development of behavioral models, pursued as two distinct tasks to achieve the second goal. As the first task, a novel econometric model and forecasting procedure is developed to analyze a household’s annual long distance leisure travel decisions. Specifically, a households’ time spent across one (or more) destination and travel mode to such destination for leisure is modeled subject to time and money budget constraints. In this methodological framework, the destination choice is modeled as a continuous variable (time at destination) using Multiple-Discrete Continuous Extreme Value model (MDCEV). While, travel mode choice to these destination(s) are modeled as a discrete choice, through a nested Multinomial Logit Model (MNL), with price variation introduced across the above choice of destination(s) and travel modes (air/ground). This required estimating annual monetary budgets, travel cost and per night lodging cost for each sample household, with each of them having 210 potential destinations and 2 travel mode choices respectively.
The second task, involved the development of a broader national model system to analyze households’ annual pleasure travel decisions such as: choice (duration) at destination(s), travel purpose (VFR or leisure), mode (airplane or auto) choice and trip frequencies to these destination(s) using the same dataset. It was modeled in two stages, with the first stage estimating households’ annual pleasure time budget using a stochastic frontier model. This budget was then used as constraint to analyze households’ annual choice of destination and purpose using a nested MDCEV-MNL model in the second stage. A log sum variable from a nested joint multinomial logit model of trip frequency and mode choice for each purpose (VFR or leisure) is also introduced as input at this stage. This model was then validated using a prediction procedure, and further applied to test a policy scenario (increase in travel cost). The above national pleasure travel demand model could be further enhanced by including monetary constraints and price variation as in the first task. Overall, the model system proposed in this dissertation forms the foundation for a national comprehensive long distance travel model. This could be achieved through inclusion of other prominent travel purpose such as business and commuting to the national travel demand model presented in this research.
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Costa, Carlos Ednaldo Ueno. "O Método de Newton e a Função Penalidade Quadrática aplicados ao problema de fluxo de potência ótimo." Universidade de São Paulo, 1998. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-27112017-145520/.
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Neste trabalho é apresentada uma abordagem do Método de Newton associado à função penalidade quadrática e ao método dos conjuntos ativos na solução do problema de Fluxo de Potência Ótimo (FPO). A formulação geral do problema de FPO é apresentada, assim como a técnica utilizada na resolução do sistema de equações. A fatoração da matriz Lagrangeana é feita por elementos ao invés das estruturas em blocos. A característica de esparsidade da matriz Lagrangeana é levada em consideração. Resultados dos testes realizados em 4 sistemas (3, 14, 30 e 118 barras) são apresentados.This work presents an approach on Newton\'s Method associated with the quadratic penalty function and the active set methods in the solution of Optimal Power Flow Problem (OPF). The general formulation of the OPF problem is presented, as will as the technique used in the equation systems resolution. The Lagrangean matrix factorization is carried out by elements instead of structures in blocks. The characteristic of sparsity of the Lagrangean matrix is taken in to account. Numerical results of tests realized in systems of 3, 14, 30 and 118 buses are presented to show the efficiency of the method.
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Banza, Pierre Alain. "To 'men of reason and religion' : John Wesley as an apologist for 'Methodism' : with special reference to his debates with Josiah Tucker, Thomas Church, and 'John Smith'." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/to-men-of-reason-and-religion-john-wesley-as-an-apologist-for-methodism-with-special-reference-to-his-debates-with-josiah-tucker-thomas-church-and-john-smith(a6c6d7fc-d40b-48ef-bc73-d324783b3eda).html.
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Apologetic has been an ongoing activity in the Church since the apostolic times. The eighteenth century witnessed one of the most famous apologists in Christian history: John Wesley. Wesley, a subscribed minister in the Church of England, defended himself against criticism from his fellow churchmen when they charged him with differing from the ‘common interpretation’ of the Thirty-Nine Articles. This thesis examines critiques of John Wesley and Methodism, and how Wesley dealt with them. It concentrates on the debates between John Wesley and three of his major opponents; namely, Josiah Tucker, Thomas Church, and ‘John Smith’.The defensive position in which Wesley found himself in following criticism from fellow clergymen shaped his methodology throughout his ministry when defending Christianity in general and ‘Methodism’ in particular; consequently, placing apologetic at the centre of his writings. When defending ‘Methodism’ against those who attacked it as an enthusiastic aberration, this thesis demonstrates that Wesley customarily appealed to the formularies of the Church of England: The Articles, the Homilies and the Common Book of Prayer. To those who attacked his doctrine of salvation by faith alone, Wesley responded by appealing to the formularies, and demonstrated that his interpretation of the formularies was in accordance with the Church Fathers, and with the compilers of the formularies. By excluding good works as conditions of justification and rejecting the charge of ‘enthusiasm to the highest degree’, Wesley showed that his doctrines, including salvation by faith alone were grounded in Scripture and took reason into account in their elaboration. Despite some hesitations in defining his doctrine of perfection, Wesley showed that he did not teach sinless perfection. When defending his connections with the Moravians, Wesley demonstrated that he rejected some Moravian tenets that did not meet his consent. Wesley contended that ‘Methodism’ contributed to Church renewal and robust Christian faith in individuals. When dealing with the ‘perceptible inspiration’ or the ‘witness of the Spirit’. Wesley based his arguments on Scripture and his interpretation of the formularies. Wesley insisted that the Holy Spirit inwardly convinces the recipient that their sins are forgiven and that they are a child of God. According to Wesley, the Holy Ghost witnesses to the believer directly. When facing those who believed that miracles had ceased with the apostles, and who argued that God gave the apostles an ‘implicit faith’ which allowed them to work miracles with the aim of establishing the church at that precise time, and God had withdrawn the gift after the fulfillment of the mission, Wesley rejected any possibility of an ‘implicit faith’ and insisted that God still worked miracles in the eighteenth century. All the correspondence between Wesley and his first three major opponents in the early life of ‘Methodism’ is critically examined in this thesis. Wesley’s hesitations when building up his doctrines are also highlighted. This thesis instructs us that when facing adversity Wesley in the defence of ‘Methodism’, frequently adapted his methodology to meet new circumstances.
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Arslan, Aykut. "Discrete Fractional Hermite-Hadamard Inequality." TopSCHOLAR®, 2017. http://digitalcommons.wku.edu/theses/1940.
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This thesis is comprised of three main parts: The Hermite-Hadamard inequality on discrete time scales, the fractional Hermite-Hadamard inequality, and Karush-Kuhn- Tucker conditions on higher dimensional discrete domains. In the first part of the thesis, Chapters 2 & 3, we define a convex function on a special time scale T where all the time points are not uniformly distributed on a time line. With the use of the substitution rules of integration we prove the Hermite-Hadamard inequality for convex functions defined on T. In the fourth chapter, we introduce fractional order Hermite-Hadamard inequality and characterize convexity in terms of this inequality. In the fifth chapter, we discuss convexity on n{dimensional discrete time scales T = T1 × T2 × ... × Tn where Ti ⊂ R , i = 1; 2,…,n are discrete time scales which are not necessarily periodic. We introduce the discrete analogues of the fundamental concepts of real convex optimization such as convexity of a function, subgradients, and the Karush-Kuhn-Tucker conditions.
We close this thesis by two remarks for the future direction of the research in this area.
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Nguyen, Viet-Dung. "Contribution aux décompositions rapides des matrices et tenseurs." Thesis, Orléans, 2016. http://www.theses.fr/2016ORLE2085/document.
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De nos jours, les grandes masses de données se retrouvent dans de nombreux domaines relatifs aux applications multimédia, sociologiques, biomédicales, radio astronomiques, etc. On parle alors du phénomène ‘Big Data’ qui nécessite le développement d’outils appropriés pour la manipulation et l’analyse appropriée de telles masses de données. Ce travail de thèse est dédié au développement de méthodes efficaces pour la décomposition rapide et adaptative de tenseurs ou matrices de grandes tailles et ce pour l’analyse de données multidimensionnelles. Nous proposons en premier une méthode d’estimation de sous espaces qui s’appuie sur la technique dite ‘divide and conquer’ permettant une estimation distribuée ou parallèle des sous-espaces désirés. Après avoir démontré l’efficacité numérique de cette solution, nous introduisons différentes variantes de celle-ci pour la poursuite adaptative ou bloc des sous espaces principaux ou mineurs ainsi que des vecteurs propres de la matrice de covariance des données. Une application à la suppression d’interférences radiofréquences en radioastronomie a été traitée. La seconde partie du travail a été consacrée aux décompositions rapides de type PARAFAC ou Tucker de tenseurs multidimensionnels. Nous commençons par généraliser l’approche ‘divide and conquer’ précédente au contexte tensoriel et ce en vue de la décomposition PARAFAC parallélisable des tenseurs. Ensuite nous adaptons une technique d’optimisation de type ‘all-at-once’ pour la décomposition robuste (à la méconnaissance des ordres) de tenseurs parcimonieux et non négatifs. Finalement, nous considérons le cas de flux de données continu et proposons deux algorithmes adaptatifs pour la décomposition rapide (à complexité linéaire) de tenseurs en dimension 3. Malgré leurs faibles complexités, ces algorithmes ont des performances similaires (voire parfois supérieures) à celles des méthodes existantes de la littérature. Au final, ce travail aboutit à un ensemble d’outils algorithmiques et algébriques efficaces pour la manipulation et l’analyse de données multidimensionnelles de grandes taillesLarge volumes of data are being generated at any given time, especially from transactional databases, multimedia content, social media, and applications of sensor networks. When the size of datasets is beyond the ability of typical database software tools to capture, store, manage, and analyze, we face the phenomenon of big data for which new and smarter data analytic tools are required. Big data provides opportunities for new form of data analytics, resulting in substantial productivity. In this thesis, we will explore fast matrix and tensor decompositions as computational tools to process and analyze multidimensional massive-data. We first aim to study fast subspace estimation, a specific technique used in matrix decomposition. Traditional subspace estimation yields high performance but suffers from processing large-scale data. We thus propose distributed/parallel subspace estimation following a divide-and-conquer approach in both batch and adaptive settings. Based on this technique, we further consider its important variants such as principal component analysis, minor and principal subspace tracking and principal eigenvector tracking. We demonstrate the potential of our proposed algorithms by solving the challenging radio frequency interference (RFI) mitigation problem in radio astronomy. In the second part, we concentrate on fast tensor decomposition, a natural extension of the matrix one. We generalize the results for the matrix case to make PARAFAC tensor decomposition parallelizable in batch setting. Then we adapt all-at-once optimization approach to consider sparse non-negative PARAFAC and Tucker decomposition with unknown tensor rank. Finally, we propose two PARAFAC decomposition algorithms for a classof third-order tensors that have one dimension growing linearly with time. The proposed algorithms have linear complexity, good convergence rate and good estimation accuracy. The results in a standard setting show that the performance of our proposed algorithms is comparable or even superior to the state-of-the-art algorithms. We also introduce an adaptive nonnegative PARAFAC problem and refine the solution of adaptive PARAFAC to tackle it. The main contributions of this thesis, as new tools to allow fast handling large-scale multidimensional data, thus bring a step forward real-time applications
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Yucel, Gizem. "A Reactionary Obstacle Avoidance Algorithm For Autonomous Vehicles." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614480/index.pdf.
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This thesis focuses on the development of guidance algorithms in order to avoid a
prescribed obstacle primarily using the Collision Cone Method (CCM). The
Collision Cone Method is a geometric approach to obstacle avoidance, which forms
an avoidance zone around the obstacles for the vehicle to pass the obstacle around
this zone. The method is reactive as it helps to avoid the pop-up obstacles as well as
the known obstacles and local as it passes the obstacles and continue to the
prescribed trajectory. The algorithm is first developed for a 2D (planar) avoidance
in 3D environment and then extended for 3D scenarios. The algorithm is formed for
the optimized CCM as well. The avoidance zone radius and velocity are optimized
using constraint optimization, Lagrange multipliers with Karush-Kuhn-Tucker
conditions and direct experimentation.
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Wei, Honghong. "Impact of mine land reforestation and revegetation on water quality in a mid-Appalachian watershed a stream monitoring study /." Morgantown, W. Va. : [West Virginia University Libraries], 2008. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5831.
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Thesis (M.S.)--West Virginia University, 2008.Title from document title page. Document formatted into pages; contains viii, 92 p. : ill., maps (some col.). Includes abstract. Includes bibliographical references (p. 56-62).
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Grunert, Sandro. "Sattelpunkte und Optimalitätsbedingungen bei restringierten Optimierungsproblemen." Universitätsbibliothek Chemnitz, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200900968.
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Sattelpunkte und Optimalitätsbedingungen bei restringierten Optimierungsproblemen
Ausarbeitung im Rahmen des Seminars "Optimierung", WS 2008/2009
Die Dualitätstheorie für restringierte Optimierungsaufgaben findet in der Spieltheorie und in der Ökonomik eine
interessante Anwendung. Mit Hilfe von Sattelpunkteigenschaften werden diverse Interpretationsmöglichkeiten der
Lagrange-Dualität vorgestellt. Anschließend gilt das Augenmerk den Optimalitätsbedingungen solcher Probleme.
Grundlage für die Ausarbeitung ist das Buch "Convex Optimization" von Stephen Boyd und Lieven Vandenberghe.
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Villanueva, Fabiola Roxana. "Contributions in interval optimization and interval optimal control /." São José do Rio Preto, 2020. http://hdl.handle.net/11449/192795.
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Orientador: Valeriano Antunes de OliveiraResumo: Neste trabalho, primeiramente, serão apresentados problemas de otimização nos quais a função objetivo é de múltiplas variáveis e de valor intervalar e as restrições de desigualdade são dadas por funcionais clássicos, isto é, de valor real. Serão dadas as condições de otimalidade usando a E−diferenciabilidade e, depois, a gH−diferenciabilidade total das funções com valor intervalar de várias variáveis. As condições necessárias de otimalidade usando a gH−diferenciabilidade total são do tipo KKT e as suficientes são do tipo de convexidade generalizada. Em seguida, serão estabelecidos problemas de controle ótimo nos quais a funçãao objetivo também é com valor intervalar de múltiplas variáveis e as restrições estão na forma de desigualdades e igualdades clássicas. Serão fornecidas as condições de otimalidade usando o conceito de Lipschitz para funções intervalares de várias variáveis e, logo, a gH−diferenciabilidade total das funções com valor intervalar de várias variáveis. As condições necessárias de otimalidade, usando a gH−diferenciabilidade total, estão na forma do célebre Princípio do Máximo de Pontryagin, mas desta vez na versão intervalar.
Abstract: In this work, firstly, it will be presented optimization problems in which the objective function is interval−valued of multiple variables and the inequality constraints are given by classical functionals, that is, real−valued ones. It will be given the optimality conditions using the E−differentiability and then the total gH−differentiability of interval−valued functions of several variables. The necessary optimality conditions using the total gH−differentiability are of KKT−type and the sufficient ones are of generalized convexity type. Next, it will be established optimal control problems in which the objective function is also interval−valued of multiple variables and the constraints are in the form of classical inequalities and equalities. It will be furnished the optimality conditions using the Lipschitz concept for interval−valued functions of several variables and then the total gH−differentiability of interval−valued functions of several variables. The necessary optimality conditions using the total gH−differentiability is in the form of the celebrated local Pontryagin Maximum Principle, but this time in the intervalar version.
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Pittenger, Peach. "Women in American popular entertainment creating a niche in the vaudevillian era, 1890s to 1930s /." Connect to this title online, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1121778515.
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Thesis (Ph. D.)--Ohio State University, 2005.Title from first page of PDF file. Document formatted into pages; contains x, 223 p.; also includes graphics. Includes bibliographical references (p. 207-223). Available online via OhioLINK's ETD Center
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Mullee, Sean. "The Effects of Hype on the Free-to-Play Pricing Strategy in the Online Video Game Industry." Miami University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=miami1588196222423073.
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Ekola, Tommy. "A Numerical Study of the Lorenz and Lorenz-Stenflo Systems." Doctoral thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-172.
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Enström, Nette Lo Agneta Irene. "En Annan berättelse om världen : Om grön anarki och existentiell befrielse." Thesis, Stockholms universitet, Institutionen för etnologi, religionshistoria och genusstudier, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-54922.
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Van, Nostrand Caleb. "A Discrete-Continuous Modeling Framework for Long-Distance, Leisure Travel Demand Analysis." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3389.
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This study contributes to the literature on national long-distance travel demand modeling by providing an analysis of households' annual destination choices and time allocation patterns for long-distance leisure travel purposes. An annual vacation destination choice and time allocation model is formulated to simultaneously predict the different destinations that a household visits and the time it spends on each of these visited destinations, in a year. The model takes the form of a Multiple Discrete-Continuous Extreme Value (MDCEV) structure (Bhat, 2005; Bhat, 2008). The model assumes that households allocate their annual vacation time to visit one or more destinations in a year to maximize the utility derived from their choices. The model framework accommodates variety-seeking in households' vacation destination choices in that households can potentially visit a variety of destinations rather than spending all of their annual vacation time for visiting a single destination. At the same time, the model accommodates corner solutions to recognize that households may not necessarily visit all available destinations. An annual vacation time budget is also considered to recognize that households may operate under time budget constraints. Further, the paper proposes a variant of the MDCEV model that avoids the prediction of unrealistically small amounts of time allocation to the chosen alternatives. To do so, the continuously non-linear utility functional form in the MDCEV framework is replaced with a combination of a linear and non-linear form.
The empirical data for this analysis comes from the 1995 American Travel Survey Data, with the U.S. divided into 210 alternative destinations. The empirical analysis provides important insights into the determinants of households' leisure destination choice and time allocation patterns.
An appealing feature of the proposed model is its applicability in a national, long-distance leisure travel demand model system. The annual destination choices and time allocations predicted by this model can be used for subsequent analysis of the number of trips made (in a year) to each destination and the travel choices for each trip. The outputs from such a national travel modeling framework can be used to obtain national-level Origin-Destination demand tables for long-distance leisure travel.
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Kang, Kingston. "ESTIMATING THE RESPIRATORY LUNG MOTION MODEL USING TENSOR DECOMPOSITION ON DISPLACEMENT VECTOR FIELD." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5254.
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Modern big data often emerge as tensors. Standard statistical methods are inadequate to deal with datasets of large volume, high dimensionality, and complex structure. Therefore, it is important to develop algorithms such as low-rank tensor decomposition for data compression, dimensionality reduction, and approximation.
With the advancement in technology, high-dimensional images are becoming ubiquitous in the medical field. In lung radiation therapy, the respiratory motion of the lung introduces variabilities during treatment as the tumor inside the lung is moving, which brings challenges to the precise delivery of radiation to the tumor. Several approaches to quantifying this uncertainty propose using a model to formulate the motion through a mathematical function over time. [Li et al., 2011] uses principal component analysis (PCA) to propose one such model using each image as a long vector. However, the images come in a multidimensional arrays, and vectorization breaks the spatial structure. Driven by the needs to develop low-rank tensor decomposition and provided the 4DCT and Displacement Vector Field (DVF), we introduce two tensor decompositions, Population Value Decomposition (PVD) and Population Tucker Decomposition (PTD), to estimate the respiratory lung motion with high levels of accuracy and data compression. The first algorithm is a generalization of PVD [Crainiceanu et al., 2011] to higher order tensor. The second algorithm generalizes the concept of PVD using Tucker decomposition. Both algorithms are tested on clinical and phantom DVFs. New metrics for measuring the model performance are developed in our research. Results of the two new algorithms are compared to the result of the PCA algorithm.
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Hošek, Jaromír. "Optimalizační modely pro energetické využití odpadu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232178.
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The main aim of this thesis is to create a sequence of mathematical optimization models with different levels of complexity for the efficient management and waste energy utilization. Stochastic programming approach was utilized to deal with random demand and uncertain heating values. Hence, more applicable model of the waste-to-energy plant has been developed. As the next step, the model is enhanced by heating plant extension. Computations are realized for real-world data and optimal solution is found by using GAMS implementation.