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Dissertations / Theses on the topic 'Correlations'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Toy, Randy Scott. "CORRELATIONS." VCU Scholars Compass, 2006. http://scholarscompass.vcu.edu/etd_retro/7.

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I explore visual and process-based systems to solidify the allusive nature of conceptual ideas. Impermanence, time and interdependence are reoccurring themes that stem from an interest in Eastern philosophy. Oscillating from representation to abstract minimalism, printmaking to sculpture, each element in a work is tailored to the concept. The minimalist appearance suggests simplicity, however elaborate planning and systematic execution are at the heart of my practice. Systems create great constraint, yet provide great freedom.

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2

Hystad, Grethe. "Periodic Ising Correlations." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/196130.

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We consider the finite two-dimensional Ising model on a lattice with periodic boundaryconditions. Kaufman determined the spectrum of the transfer matrix on the finite,periodic lattice, and her derivation was a simplification of Onsager's famous result onsolving the two-dimensional Ising model. We derive and rework Kaufman's resultsby applying representation theory, which give us a more direct approach to computethe spectrum of the transfer matrix. We determine formulas for the spin correlationfunction that depend on the matrix elements of the induced rotation associated withthe spin operator.

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3

Martinsson, Engshagen Jan. "Nothing is normal in nance! : On Tail Correlations and Robust Higher Order Moments in Normal Portfolio Frameworks." Thesis, KTH, Matematik (Inst.), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-102699.

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Abstract This thesis project is divided in two parts. The first part examines the possibility that correlation matrix estimates based on an outlier sample would contain information about extreme events. According to my findings, such methods do not perform better than simple shrinkage methods where robust shrinkage targets are used. The method tested is especially outperformed when it comes to the extreme events, where a shrinkage of the correlation matrix towards the identity matrix seems to give the best result. The second part is about valuation of skewness in marginal distributions and the

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4

Perarnau, Llobet Martí. "Thermodynamics and quantum correlations." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/404732.

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Thermodynamics traditionally deals with macroscopic systems at thermal equilibrium. However, since the very beginning of the theory, its range of applicability has only increased, nowadays being applied to virtually every field of science, and to systems of extremely different size. This thesis is devoted to the study of thermodynamics in the quantum regime. It contains original results on topics that include: Work extraction from quantum systems, fluctuations of work, the energetic value of correlations and entanglement, and the thermodynamics of closed quantum many body systems. First,

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5

Matte, Robert. "Correlations and multifractal measures." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56945.

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This thesis explores the relationships between multifractal measures, multiplicative cascades and correlations. A review of fractal geometry, multifractal formalism and multiplicative cascades is offered. The importance of the Legendre transformation in multifractal formalism is highlighted, especially for multifractal spectrums which are not convex or twice differentiable. By reconsidering the scaling assumption $N sb{p}( alpha$) d$ alpha$ = $ sigma( alpha) rho sp{-f( alpha)} d alpha$, we show that subsets of a measure may offer a different multifractal spectrum. A gradation of self-similarit

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6

Parker, Jane Ker. "Crystal structure reactivity correlations." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316782.

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7

Lothian, Paul James Gillougley. "On correlations of sequences." Thesis, Royal Holloway, University of London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286326.

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8

Ekert, Artur Konrad. "Correlations in quantum optics." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293479.

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9

Saunders, Christopher Glenn. "Magnetostructural Correlations in Tetrahalocuprates." Thesis, University of Canterbury. Chemistry, 2012. http://hdl.handle.net/10092/8651.

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This thesis describes the preparation and characterisation of a number of tetrahalocuprate complexes. The compounds were made by reacting the chosen organic cation with the desired copper(II) salt. Three series of tetrahalocuprates were studied; (1) 5-amino-2-substituted pyridines, (2) mixed halide tetrahalocuprates using different dimethylpyridine isomers and (3) imidazolium ions. The structure of thirty three compounds were determined using single crystal X-ray crystallography. The compounds studied gave a wide range of different structures. The 5-amino-2-substituted pyridines showed four di

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10

Hughes, John Rhys. "Octupole correlations in '2'2'5Th." Thesis, University of York, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235660.

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11

Jones, Nicholas Steven. "Correlations : quantum and classical." Thesis, University of Bristol, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424643.

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12

Menga, Marina. "Entanglement detection measuring classical correlations." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13510/.

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L'entanglement è un fenomeno di natura puramente quantistica ed è considerato la principale risorsa dei protocolli quantistici di manipolazione e trasmissione di informazione. Lo studio e la caratterizzazione dell'entanglement rivestono dunque un ruolo cruciale nello sviluppo della teoria dell'informazione quantistica e nella comprensione delle strutture fondamentali della meccanica quantistica non relativistica. Uno dei principali problemi legati alla teoria dell'entanglement è quello di trovare dei criteri ottimali per la rilevazione, la caratterizzazione e la quantificazione dell'entangl

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13

Tröster, Tilman. "Weak gravitational lensing cross-correlations." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/62592.

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The matter content of the Universe is dominated by dark matter. Beyond its abundance and its lack of non-gravitational interactions with standard model matter, little is known about the nature of dark matter. This thesis attempts to illuminate different aspects of dark matter by using gravitational lensing in conjunction with other cosmological probes. Gravitational lensing describes the deflection of light by gravitational potentials and is a direct and unbiased probe of the matter distribution in the Universe. We investigate the weakly interacting massive particle (WIMP) model of dark matte

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14

Korkusinski, Marek. "Correlations in semiconductor quantum dots." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/29128.

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In this Thesis, I present a theoretical study of correlation effects in strongly interacting electronic and electron-hole systems confined in semiconductor quantum dots. I focus on three systems: N electrons in a two-dimensional parabolic confinement in the absence and in the presence of a magnetic field, an electron-hole pair confined in a vertically coupled double-quantum-dot molecule, and a charged exciton in a quantum-ring confinement in a magnetic field. To analyse these systems I use the exact diagonalisation technique in the effective-mass approximation. This approach consists of three

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15

Sloggett, Clare Physics Faculty of Science UNSW. "Electron correlations in mesoscopic systems." Awarded by:University of New South Wales. School of Physics, 2007. http://handle.unsw.edu.au/1959.4/31875.

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This thesis deals with electron correlation effects within low-dimensional, mesoscopic systems. We study phenomena within two different types of system in which correlations play an important role. The first involves the spectra and spin structure of small symmetric quantum dots, or &quoteartificial atoms&quote. The second is the &quote0.7 structure&quote, a well-known but mysterious anomalous conductance plateau which occurs in the conductance profile of a quantum point contact. Artificial atoms are manufactured mesoscopic devices: quantum dots which resemble real atoms in that their symmetr

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16

Syratt, Richard William. "Angular correlations of speckle patterns." Thesis, Imperial College London, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261820.

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17

Girolami, Davide. "Quantum correlations in information theory." Thesis, University of Nottingham, 2013. http://eprints.nottingham.ac.uk/13397/.

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The project concerned the study of quantum correlations (QC) in compound systems, i.e. statistical correlations more general than entanglement which are predicted by quantum mechanics but not described in any classical scenario. I aimed to understand the technical and operational properties of the measures of QC, their interplay with entanglement quantifiers and the experimental accessibility. In the first part of my research path, after having acquired the conceptual and technical rudiments of the project, I provided solutions for some computational issues: I developed analytical and numerica

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18

Tipton, Denver Leonard John. "Electron correlations in quantum dots." Thesis, King's College London (University of London), 2001. https://kclpure.kcl.ac.uk/portal/en/theses/electron-correlations-in-quantum-dots(b6e1a547-fbb8-41f7-9d2b-f235b68b85be).html.

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19

Norrköping, Symfoniorkestern. "Quantum correlations in various systems." Thesis, Queen's University Belfast, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411371.

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20

Stratton, B. "Aspects of structure-reactivity correlations." Thesis, University of East Anglia, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382852.

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21

Thirukkonda, Sreeram (Sreeram Radhakrishnan) 1975. "Correlations in firm default behavior." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/55245.

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Thesis (S.M.)--Massachusetts Institute of Technology, System Design and Management Program, 2009.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 67-68).<br>Modeling credit risk using Structural and Reduced Form models has been a popular and apropos topic of research. This work makes an attempt to better understand correlations in firm default. A review of contemporary research reveals several models with varying degrees of assumptions around firm default and how they relate to macroeconomic variables. More recent literature also makes use of a doubly stocha

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22

Marianetti, Chris 1975. "Electronic correlations in LixÌ³ CoO₂." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/30120.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2004.<br>In title on t.p., double-underscored "x" appears as subscript.<br>Includes bibliographical references (p. 120-123).<br>The purpose of this thesis is further the understanding of the electronic properties of LixCoO2 using density functional theory (DFT) and the dynamical mean-field theory (DMFT). Three main problems are addressed. First, the influence of hybridization among the eg and oxygen orbitals is studied using DFT and a modified Hubbard model which is solved within DMFT. It has lo

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23

Ainsley, Anne Elizabeth. "Interplot correlations in variety trials." Thesis, University of Edinburgh, 1985. http://hdl.handle.net/1842/13828.

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24

Cheong, Pak Leng. "Genotype-Phenotype Correlations in Porphyria." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/13647.

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The porphyrias are a group of disorder resulting from defects in the haem biosynthesis pathway. The majority of defects are genetic in origin. The clinical penetrance of porphyria is variable and cannot be explained by environmental factors alone. It is therefore likely that genetic modifiers are present to influence the phenotypic outcome of the disease. In the first part of this study, variants in ABCB6, a member of the ATP-Binding Cassette transporter, were detected in a high proportion (62.5%) of severely affected porphyria patients. In vitro functional studies revealed that these ABCB6 va

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25

Ibnouhsein, Mohamed Issam. "Quantum correlations and causal structures." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112426/document.

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Les travaux récents en fondements de la théorie quantique (des champs) et en information quantique relativiste tentent de mieux comprendre les effets des contraintes de causalité imposées aux opérations physiques sur la structure des corrélations quantiques. Le premier chapitre de cette thèse est consacré à l'étude des implications conceptuelles de la non-localité quantique, notion qui englobe celle d'intrication dans un sens précis. Nous détaillons comment les récentes approches informationnelles tentent de saisir la structure des corrélations non-locales, ainsi que les questions que ces dern

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26

Rabenseifner, Adrian. "Oblivious transfer from non-local correlations." Zurich : ETH, Swiss Federal Institute of Technology Zurich, Department of Computer Science, Group of Quantum Information, 2009. http://e-collection.ethbib.ethz.ch/show?type=dipl&nr=446.

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27

Guerini, de Souza Leonardo. "Simulating quantum measurements and quantum correlations." Doctoral thesis, Universitat Politècnica de Catalunya, 2018. http://hdl.handle.net/10803/482108.

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This PhD thesis is focused on the quantum measurement simulability problem, that is, deciding whether a given measurement can be simulated when only a restricted subset of measurements is accessible. We provide an operational framework for this problem based on classical manipulations over the set of simulators. Particular cases of interest are further investigated, in which the simulators are taken to be projective measurements, measurements of a fixed number of outcomes, and arbitrary sets of fixed cardinality. In each of these situations we derive either necessary or sufficient conditions f

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28

Kidun, Oleg. "Investigation of electronic correlations in nanostructures." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=972491562.

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29

Hogan, Patrick. "Correlations in geometrically frustrated spin systems." Thesis, University of Oxford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491535.

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In this thesis we study the quantum and statistical mechanics of geometrically frustrated antiferromagnets. In particular, we develop a novel, general approach for studying the disordered phases of systems comprised of vertex-sharing fully frustrated spin clusters, in which every pair of spins is coupled equally by antiferromagnetic Heisenberg interactions. The novel feature of our approach is the use of conjugate Hubbard-Stratonovich fields associated with each fully frustrated cluster of spins, rather than with the spin sites themselves, to decouple all the individual spin-spin exchange inte

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30

Guimarães, Dias Ricardo Assis. "Anomalous correlations in low dimensional metals." Thesis, University of Cambridge, 1996. https://www.repository.cam.ac.uk/handle/1810/251598.

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Dimensionality is a determinant factor in the behaviour of interacting electron systems. The cuprates and the organic superconductors are examples of systems of reduced dimensionality with anomalous normal state correlations. This thesis presents a study of one and two-particle correlations, namely, the single particle spectral function and the pair propagator, for electron systems with low dimensionality. The single particle spectral function is probed by angle resolved photoemission experiments. Theories of photoemission are presented. One dimensional metals belong to the Luttinger liquid un

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31

Burke, Georgina. "Genotype - phenotype correlations in congenital myasthenia." Thesis, University of Oxford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.437178.

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32

Nunnenkamp, Andreas. "Strong correlations in ultracold atomic gases." Thesis, University of Oxford, 2008. http://ora.ox.ac.uk/objects/uuid:6e09e9d3-f5cd-4580-a667-6599203162e2.

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In this thesis we investigate strongly-correlated states of ultracold bosonic atoms in rotating ring lattices and arrays of double-well potentials. In the first part of the thesis, we study the tunneling dynamics of ultracold bosons in double-well potentials. In the non-interacting limit single-particle transitions dominate, while in the interaction-dominated regime correlated tunneling of all particles prevails. At intermediate times of the many-particle flopping process correlated states occur, but the timescales of these processes increase dramatically with the number of particles. Using an

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33

Collins, Jeremy Charles. "Grammaticalization and Greenberg's word order correlations." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B50534130.

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Word order universals constitute a well-known problem in language typology, first outlined in Greenberg (1963). It has been firmly established in databases of over 1500 languages that languages with verb-object ordering are very likely to have prepositions and noun-genitive ordering, while languages with object-verb ordering are very likely to have postpositions and genitive-noun ordering (Dryer and Haspelmath 2011). This thesis attempts to give a historical explanation for these facts in terms of the origin of syntactic categories: adpositions have historically developed from nouns and verbs

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34

Lyamzin, Dmitry. "Correlations in populations of sensory neurons." Diss., Ludwig-Maximilians-Universität München, 2014. http://nbn-resolving.de/urn:nbn:de:bvb:19-176398.

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35

Lang, Guillaume. "Correlations in low-dimensional quantum gases." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAY076/document.

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Les gaz d'atomes utlra-froids sont adaptés pour simuler des phénomènes observés en physique de la matière condensée, de part le haut degré d'ajustabilité de l'ensemble des paramètres avec une précision exceptionnelle.En particulier, la réalisation de pièges hautement anisotropes permet de confiner ces gaz en basse dimension, où le rôle des fluctuations quantiques est accru.Je m'attache en particulier au modèle de gaz de Bose unidimensionel dont les atomes interagissent localement, connu sous le nom de modèle de Lieb et Liniger. Les outils théoriques que j'emploie sont l'Ansatz de Bethe, la thé

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36

FIELDS, PATRICK-PIERRE. "Correlations radio-serologiques des polyarthrites rhumatoides." Aix-Marseille 2, 1988. http://www.theses.fr/1988AIX20491.

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37

Schneider, William. "Strong Correlations in Ultracold Fermi Gases." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1316447449.

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38

Brézin, Antoine P. "Glaucome chronique : genetique et correlations cliniques." Paris 7, 2001. http://www.theses.fr/2001PA077064.

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Le glaucome primitif a angle ouvert (gpao), deuxieme cause de handicap visuel irreversible dans les pays riches, entraine une neuropathie optique progressive. La maladie est asymptomatique avant ses stades avances. Le principal facteur de risque de gpao est l'elevation de la pression intraoculaire (pio). Lorsque le glaucome est depiste a temps, des traitements hypotonisants oculaires peuvent prevenir la progression des deficits fonctionnels visuels. Situe en 1q21-31 au locus glc1a, tigr / myoc (trabecular meshwork-inducible glucocorticoid response / myociline) a ete le premier gene identifie a

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39

Zhang, Zhihong. "Feature selection from higher order correlations." Thesis, University of York, 2012. http://etheses.whiterose.ac.uk/3340/.

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This thesis addresses the problems in feature selection, particularly focusing on selecting features from higher order correlations. To this end, we present two supervised feature selection approaches named \emph{Graph based Information-theoretic Feature Selection} and \emph{Hypergraph based Information-theoretic Feature Selection} respectively, which are capable of considering third or even higher order dependencies between the relevant features and capturing the optimal size of relevant feature subset. Furthermore, we develop two unsupervised feature selection methods which can evaluate feat

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40

Bennet, Adam Joseph. "Optical Experiments on Shared Quantum Correlations." Thesis, Griffith University, 2015. http://hdl.handle.net/10072/365930.

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Shared quantum correlations find application in a wide range of modern quantum information protocols. This thesis presents several optical experiments towards the improved certification of shared quantum correlations, using photonic qubits. The first experiment demonstrates the Einstein–Podolsky–Rosen (EPR) steering effect with no detection loophole. Polarisation–entangled photon pairs generated in a Sagnac interferometer were used to test new loss–tolerant EPR steering inequalities. To test the robustness of the loss–tolerant EPR steering nequalities, a transmission loss of −4.3dB was introd

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41

Wolstenhulme, Richard. "Three-point phase correlations in cosmology." Thesis, University of Cambridge, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.762062.

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42

Chrzanowski, Helen Mary. "Extracting quantum correlations from gaussian states." Phd thesis, Canberra, ACT : The Australian National University, 2014. http://hdl.handle.net/1885/14511.

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The Gaussian toolbox of the continuous variables provides for deterministic, high-efficiency operations with non-classical states. Its very Gaussian nature, however, restricts its reach for quantum information and communication applications. This thesis comprises three experimental works, which seek to examine the strengths of this toolbox and address some of its weaknesses. The measurement-based non-linearity of a conditional photon-counting measurement can be used to de-Gaussify' a Gaussian state of light. Here, we propose a continuous variable analog of just such a 'heralding' measurement,

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43

RICCARDI, ALBERTO. "UNCERTAINTY RELATIONS, QUANTUM CORRELATIONS AND APPLICATIONS." Doctoral thesis, Università degli studi di Pavia, 2020. http://hdl.handle.net/11571/1317091.

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44

Abedinpour, Harzand Saeed. "Correlations in low-dimensional electron liquids." Doctoral thesis, Scuola Normale Superiore, 2007. http://hdl.handle.net/11384/85852.

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45

AVRIL, GEORGES-ANTOINE. "Plaques d'endarteriectomie carotidienne : correlations anatomo-cliniques." Nice, 1989. http://www.theses.fr/1989NICE6022.

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46

Simon, Florian. "Band quantum geometry and electronic correlations." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP151.

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Deux des piliers actuels de la matière condensée sont d'une part la matière corrélée et d'autre part la matière topologique, avec la géométrie quantique comme sous-jaçent. La physique des matériaux corrélés, en tant que domaine de recherche, a pris forme vers le milieu du 20ème siècle avec la découverte des isolants de Mott et de l'effet Kondo. Le domaine des matiériaux topologiques a quant à lui ses origines dans les années 1980 avec l'effet Hall quantique entier, et a globalement pris forme dans les années 2000. La géométrie quantique, qui sous-tend la topologie, repose sur la théorie des ba

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47

Thomsen, Laura Kathrine Wehde, and n/a. "Using Quantum Feedback to Control Nonclassical Correlations in Light and Atoms." Griffith University. School of Science, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040406.124012.

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This thesis considers two types of applications of quantum feedback control; feedback creation of nonclassical states of light, and controlling nonclassical properties of an ensemble of atoms. An electro-optical feedback loop will create an in-loop field with nonclassical photon statistics similar to squeezed light, resulting in fluorescence line-narrowing of a two-level atom coupled to such light. We extend this theory to study a three-level atom coupled to broadband squashed light, and confirm the two-level atom line-narrowing using a more realistic non-Markovian description of the feedback

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48

Thomsen, Laura Kathrine Wehde. "Using Quantum Feedback to Control Nonclassical Correlations in Light and Atoms." Thesis, Griffith University, 2004. http://hdl.handle.net/10072/367297.

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This thesis considers two types of applications of quantum feedback control; feedback creation of nonclassical states of light, and controlling nonclassical properties of an ensemble of atoms. An electro-optical feedback loop will create an in-loop field with nonclassical photon statistics similar to squeezed light, resulting in fluorescence line-narrowing of a two-level atom coupled to such light. We extend this theory to study a three-level atom coupled to broadband squashed light, and confirm the two-level atom line-narrowing using a more realistic non-Markovian description of the feedback

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49

Thongchua, Chalita, and Wenjin Yang. "Correlations between Requirement Attributes and Process Attributes : Identifying and quantifying the correlations in a rapid software development process." Thesis, Blekinge Tekniska Högskola, Avdelningen för programvarusystem, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2206.

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It is reported that the market-driven product development is becoming common in the software industry. There are two challenges in the market-driven product development: time-to-market and meeting customers’ requirements. A rapid software development process is regarded as a good way to solve those two challenges. Streamline development process (SLDP) is aligned with a rapid software development process, which is an in-house development process of Ericsson AB. In this study, seven completed projects from the streamline development process were investigated. The correlations between requirement

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50

Nilsson, Johanna. "CORRELATIONS BETWEEN PHYSICOCHEMICAL PROPERTIES IN MATERIALS COMPRISING MICROFIBRILLATED CELLULOSE : CORRELATIONS BETWEEN PHYSICOCHEMICAL PROPERTIES IN MATERIALS COMPRISING MICROFIBRILLATED CELLULOSE." Thesis, Umeå universitet, Kemiska institutionen, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-185526.

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Microfibrillated cellulose (MFC) films have gained a lot of industrial interest lately dueto their good barrier properties and good mechanical strength. In this study it wasinvestigated whether rheological characteristics and conductivity of MFC dispersionscomprised of different MFC grades could be correlated to tensile properties of the MFCfilms produced from the corresponding MFC dispersion. A rheological characterizationmethod was developed for MFC dispersions with 3 wt% MFC and a secret additiveusing a dynamic rotational rheometer and a smooth “plate to plate” geometry. Themethod consisted

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