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Mesure des corrélations gamma-hadrons et hadrons-hadrons dans les collisions pp à 7 TeV pour l'étude de la fragmentation des jets avec l'expérience ALICE du LHCMao, Yaxian 03 June 2011 (has links) (PDF)
L'expérience ALICE, qui utilise les collisions d'ions lourds ultra-relativistes produites par le LHC au CERN, est dédiée à l'étude d'un nouvel état de la matière nucléaire, qui pourrait se présenter sous la forme d'un plasma de quarks et de gluons (QGP). Parmi les sondes portant des informations sur les propriétés de ce milieu, celles relatives à la production des jets de grande impulsion transverse sont particulièrement intéressantes. L'analyse présentée dans cette thèse s'intéresse aux évènements photon-jet, qui comportent un photon de grande impulsion transverse avec un jet émis dans la direction opposée. Ce dernier est issu de la fragmentation d'un parton, une fois qu'il a traversé le QGP. La thèse comprend une étude des observables pertinentes pour la mesure des corrélations photon-hadron ainsi qu'une analyse des premières données du LHC en collisions proton-proton. Des résultats préliminaires sur l'impulsion transverse des partons incidents et la fonction de corrélation ont ainsi été obtenus.
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Étude de la production de photons isolés en collisions proton-proton avec le calorimètre EMCal de l'expérience ALICE au LHCIchou, R. 06 October 2010 (has links) (PDF)
Produits lors des collisions dures proton-proton initiales, les photons prompts sont un outil interessant pour etudier la ChromoDynamiqueQuantique perturbative (pQCD) en collisions proton-proton, comme celles ayant lieu aupres du Large Hadron Collider (LHC) du CERN. De plus, les photons de grande energie transverse fournissent des informations essentielles sur les fonctions de distribution partoniques (PDF) a l'interieur du proton. Pour les mesurer, il est necessaire de s'affranchir des nombreuses autres sources de photons qui existent en plus des photons prompts, particulierement du large bruit de fond provenant des photons de decroissance du pi0. EMCAL (ElectroMagnetic CALorimeter), le calorimetre de l'experience ALICE (A Large Ion Collider Experiment) au LHC couvre les rapidites centrales et permet d'ameliorer significativement les capacites d'ALICE a mesurer les photons de grande impulsion transverse. Nous presentons des etudes d'identification des photons, dans EMCAL, en explicitant les methodes developpees pour les separer des photons du pi0, a l'aide de coupures d'isolement.
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Achieve the course goals for English A by reading literaturePierrou, Sara January 2010 (has links)
<p>This essay is about how to achieve the course goals of English A, at upper secondary school, by using literature. The novel Go Ask Alice is targeted and a number of exercises are presented as different examples of how to achieve course goals.</p>
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Att bli subjekt i sin egen historia : En studie i Alice Lyttkens Flykten från vardagen och - kommer inte till middagenBerg, Annika January 2008 (has links)
<p>Alice Lyttkens (1897-1991) was a very popular author in Sweden during several decades in the middle of the twentieth century. She was most famous for her historical novels. During her first period as a novelist in the 1930s, however, she wrote contemporary fiction, reflecting the situation of contemporary Women. The traditional view of the two sexes as “complementary” permeated the interwar period. Complementary at this time was presupposed as an asymmetrical and hierarchical relation between the two sexes. The male was seen as superior to the female in being strong when she was weak etc. According to the Swedish researcher Kristina Fjelkestam’s dissertation Ungkarlsflickor, kamrathustrur och manhaftiga lesbianer this view was close at hand in representations of femininity. In this paper I discuss how the protagonists in Alice Lyttkens novels Flykten från vardagen (1933) and - kommer inte till middagen (1934) relate to this social norm, or ”doxa”. By making such an analysis I come to the conclusion that this ”doxa” is represented in both novels, but strongly challenged by the protagonists in their actions and life choices. The narrator also questions the predominated complementary view and demonstrates the protagonist’s thoughts and feelings throughout the novels. The author there by emphasizes a critical feminist attitude. The narrator is also critical of the superficial so-called modern characters, which apparently is under the influence of the ”doxa”.</p>
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Encryption Key Search using Java-based ALiCE GridVirkar, Ameya 01 1900 (has links)
Encryption Key Search is a compute-intensive operation that consists of a brute-force search of a particular key in a given key space. Sequential execution time for a 56-bit encryption key search is approximately 200,000 years and therefore it is ideal to execute such operation in a grid environment. ALiCE (Adaptive and scaLable internet-based Computing Engine) is a grid middleware that offers a portable software technology for developing and deploying grid applications and systems. This paper discusses the development of the Encryption Key Search application on ALiCE and also presents the performance evaluation of ALiCE using this application. / Singapore-MIT Alliance (SMA)
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Representations of the Black male, his family, culture, and community in three writers for African-American young adults Mildred D. Taylor, Alice Childress, and Rita Williams-Garcia /Marler, Myrna Dee. January 2001 (has links)
Thesis (Ph. D.)--University of Hawaii at Manoa, 2001. / Includes bibliographical references (leaves 298-319). Also available on microfiche.
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Att bli subjekt i sin egen historia : En studie i Alice Lyttkens Flykten från vardagen och - kommer inte till middagenBerg, Annika January 2008 (has links)
Alice Lyttkens (1897-1991) was a very popular author in Sweden during several decades in the middle of the twentieth century. She was most famous for her historical novels. During her first period as a novelist in the 1930s, however, she wrote contemporary fiction, reflecting the situation of contemporary Women. The traditional view of the two sexes as “complementary” permeated the interwar period. Complementary at this time was presupposed as an asymmetrical and hierarchical relation between the two sexes. The male was seen as superior to the female in being strong when she was weak etc. According to the Swedish researcher Kristina Fjelkestam’s dissertation Ungkarlsflickor, kamrathustrur och manhaftiga lesbianer this view was close at hand in representations of femininity. In this paper I discuss how the protagonists in Alice Lyttkens novels Flykten från vardagen (1933) and - kommer inte till middagen (1934) relate to this social norm, or ”doxa”. By making such an analysis I come to the conclusion that this ”doxa” is represented in both novels, but strongly challenged by the protagonists in their actions and life choices. The narrator also questions the predominated complementary view and demonstrates the protagonist’s thoughts and feelings throughout the novels. The author there by emphasizes a critical feminist attitude. The narrator is also critical of the superficial so-called modern characters, which apparently is under the influence of the ”doxa”.
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Production du J/ψ dans les collisions proton-proton à 2.76 et 7 TeV dans l'expérience ALICE auprès du LHCGeuna, Claudio 12 November 2012 (has links) (PDF)
Le plasma de quarks et de gluons (QGP) est un état de la matière nucléaire apparaissant à hautedensité d'énergie. En laboratoire, il est possible de reproduire de telles conditions grâce aux collisionsd'ions lourds aux énergies ultra-relativistes. ALICE (A Large Ion Collider Experiment) estl'expérience du LHC dédiée à la mise en évidence du QGP.Différentes signatures ont été proposées et étudiées expérimentalement comme manifestations duQGP. Parmi celles-ci, le méson J/ψ joue un rôle central. Il fait partie de la famille des quarkonia,états mésoniques (Q¯Q) formées d'un quark lourd c ou b et de son anti-quark, liés par un potentield'interaction forte. En 1986, Matsui et Satz proposèrent la suppression des charmonia (états liés cc)et notamment du J/ψ comme signature de la formation du plasma de quarks et de gluons.ALICE peut détecter le J/ψ à grande rapidité (2.5 < y < 4) via le canal de désintégration en deuxmuons. Cette thèse porte sur la mesure de la production du J/ψ, via le canal muonique, dans lescollisions pp à une énergie dans le centre de masse de 2.76 et 7 TeV. Elle a exploité les donnéesacquises en 2010 et 2011 auprès du collisionneur LHC.Tenter d'appréhender le mécanisme de production du J/ψ (et plus généralement du quarkonium)dans les collisions pp est un préalable nécessaire avant d'aborder le degré de complexité suivantque constitue le cas des collisions noyau-noyau. Il est également un test important pour la QuantumChromo Dynamics (QCD), la théorie de l'interaction forte, aux énergies très élevées du LHC.
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Alice Hamilton: The Making of a Feminist-Pragmatist RhetorMcCoy, Vicki J. 12 January 2006 (has links)
ABSTRACT Dr. Alice Hamilton (1869-1970), the leading American figure in industrial medicine during the early to mid-1900s, left behind a body of rhetoric that is important in the history of American feminist discourse and American public address. Her discourse is the exemplary of feminist-pragmatist rhetoric, a genre of cross-gender communication developed by New Women associated with Hull House and the University of Chicago between 1892 and 1918. Hamilton’s rhetoric illuminates a key event in the history of the American rhetorical tradition—the emergence of the modern woman from her late-Victorian beginnings through her Progressive self-transformation. This study is approached as a rhetorical biography. It tracks Hamilton’s evolution from “reticent scientist” to outspoken feminist-pragmatist by examining family, educational, peer and social influences on her development; and through critical analysis of her speeches, technical writing, books, and popular and specialty magazine articles over a 36-year period, from 1907 to 1943.
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It's pretty super! : A Mathematical Study of Superspace in Fourdimensional, Unextended SupersymmetryFriden, Eric January 2012 (has links)
Superspace is a fundamental tool in the study of supersymmetry, one that while often used is seldom defined with a proper amount of mathematical rigor. This paper examines superspace and presents three different constructions of it; the original by Abdus Salam and J. Strathdee as well as two modern methods by Alice Rogers and Buchbinder-Kuzenko.Though the structures arrived at are the same the two modern constructions differ in methods, elucidating different important aspects of super-space. Rogers focuses on the underlying structure through the study of supermanifolds, and Buchbinder-Kuzenko the direct correlation with the Poincare superalgebra, and the parametrisation in terms of exponents.
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