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Dissertations / Theses on the topic 'Non-Local Field'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Bridle, Ismail Hamzaan. "Non-polynomial scalar field potentials in the local potential approximation." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/410270/.

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We present the renormalisation group analysis of O(N) invariant scalar field theory in the local potential approximation. Linearising around the Gaussian fixed point, we find the same eigenoperators solutions exist for both the Wilsonian and the Legendre effective actions, given by solutions to Kummer’s equations. We find the usual polynomial eigenoperators and the Hilbert space they define are a natural subset of these solutions given by a specific set of quantised eigenvalues. Allowing for continuous eigenvalues, we find non-polynomial eigenoperator solutions, the so called Halpern-Huang dir

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2

Riquier, Raphaël. "Magnetic field in laser plasmas : non-local electron transport and reconnection." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLX004/document.

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Dans le cadre de la fusion par confinement inertiel, une capsule contenant le combustible de deutérium-tritium est implosée soit par irradiation laser (attaque directe, interaction laser – cible de numéro atomique faible), soit par un rayonnement de corps noir émis par une cavité convertissant le rayonnement laser (attaque indirecte, interaction laser – cible de numéro atomique élevé).Dans les deux cas, une modélisation correcte du transport électronique est cruciale pour avoir des simulations hydro-radiatives prédictives. Cependant, il a été montré très tôt que les hypothèses d'un mécanisme d

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3

Frailey, Conor Nelson. "Representations of the General Linear Groupoid Over a Non-Archimedean Local Field." Thesis, Yale University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3580686.

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4

Florin, Esther [Verfasser]. "Causality measures between neural signals from invasively and non-invasively obtained local field potentials in humans / Esther Florin." Wuppertal : Universitätsbibliothek Wuppertal, 2010. http://d-nb.info/1006178449/34.

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5

Kawamura, Koei. "Infinite-variate extensions of Krawtchouk polynomials and zonal spherical functions over a local field." Kyoto University, 2018. http://hdl.handle.net/2433/232216.

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6

Cao, Xiaodong [Verfasser], and Philipp [Akademischer Betreuer] Hansmann. "Extensions of dynamical mean-field theory to non-local correlations and multi-band systems / Xiaodong Cao ; Betreuer: Philipp Hansmann." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2019. http://d-nb.info/1217253378/34.

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7

Chinner, Trinity. "Elliptic Tori in p-adic Orthogonal Groups." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/42759.

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In this thesis, we classify up to conjugacy the maximal elliptic toral subgroups of all special orthogonal groups SO(V), where (q,V) is a 4-dimensional quadratic space over a non-archimedean local field of odd residual characteristic. Our parameterization blends the abstract theory of Morris with a generalization of the practical work performed by Kim and Yu for Sp(4). Moreover, we compute an explicit Witt basis for each such torus, thereby enabling its concrete realization as a set of matrices embedded into the group. This work can be used explicitly to construct supercuspidal representa

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8

Wang, Chao. "Exploiting non-redundant local patterns and probabilistic models for analyzing structured and semi-structured data." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1199284713.

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9

Supe, Kristin Edwards. "Role of Rat Neuronal Oscillations in Acquisition and Disruption of Working Memory with Acute Ethanol." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1404732893.

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10

Mehmeti, Vlere. "Patching on Berkovich Spaces and the Local-Global Principle." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMC240.

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Le recollement sur les corps, introduit par Harbater et Hartmann, et étendu par ces auteurs et Krashen, a récemment trouvé de nombreuses applications. Nous présentons ici une extension de cette technique au cadre de la géométrie analytique de Berkovich et des applications au principe local-global.Nous montrons que cette adaptation du recollement peut s'appliquer aux courbes analytiques de Berkovich, et par conséquent obtenons des principes locaux-globaux sur les corps de fonctions de courbes définies sur des corps ultramétriques complets. Grâce à la connexion entre les points d'une courbe anal

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11

Vogel, Michael Werner. "Theoretical and numerical investigation of plasmon nanofocusing in metallic tapered rods and grooves." Thesis, Queensland University of Technology, 2009. https://eprints.qut.edu.au/29241/1/Michael_Vogel_Citation.pdf.

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Effective focusing of electromagnetic (EM) energy to nanoscale regions is one of the major challenges in nano-photonics and plasmonics. The strong localization of the optical energy into regions much smaller than allowed by the diffraction limit, also called nanofocusing, offers promising applications in nano-sensor technology, nanofabrication, near-field optics or spectroscopy. One of the most promising solutions to the problem of efficient nanofocusing is related to surface plasmon propagation in metallic structures. Metallic tapered rods, commonly used as probes in near field microscopy and

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12

Vogel, Michael Werner. "Theoretical and numerical investigation of plasmon nanofocusing in metallic tapered rods and grooves." Queensland University of Technology, 2009. http://eprints.qut.edu.au/29241/.

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Effective focusing of electromagnetic (EM) energy to nanoscale regions is one of the major challenges in nano-photonics and plasmonics. The strong localization of the optical energy into regions much smaller than allowed by the diffraction limit, also called nanofocusing, offers promising applications in nano-sensor technology, nanofabrication, near-field optics or spectroscopy. One of the most promising solutions to the problem of efficient nanofocusing is related to surface plasmon propagation in metallic structures. Metallic tapered rods, commonly used as probes in near field microscopy and

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13

Jayasooriya, Jayasooriya Hevavitharanage Aruna Ruwan. "Vulnerability and damage analysis of reinforced concrete framed buildings subjected to near field blast events." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/67925/1/Ruwan_Jayasooriya_Thesis.pdf.

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Terrorists usually target high occupancy iconic and public buildings using vehicle borne incendiary devices in order to claim a maximum number of lives and cause extensive damage to public property. While initial casualties are due to direct shock by the explosion, collapse of structural elements may extensively increase the total figure. Most of these buildings have been or are built without consideration of their vulnerability to such events. Therefore, the vulnerability and residual capacity assessment of buildings to deliberately exploded bombs is important to provide mitigation strategies

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14

Tucker, Adam Philip. "Local moment phases in quantum impurity problems." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:538d2d83-963e-4a51-81cd-4235e9761da4.

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This thesis considers quantum impurity models that exhibit a quantum phase transition (QPT) between a Fermi liquid strong coupling (SC) phase, and a doubly-degenerate non-Fermi liquid local moment (LM) phase. We focus on what can be said from exact analytic arguments about the LM phase of these models, where the system is characterized by an SU(2) spin degree of freedom in the entire system. Conventional perturbation theory about the non-interacting limit does not hold in the non-Fermi liquid LM phase. We circumvent this problem by reformulating the perturbation theory using a so-called `two s

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15

Ridgers, Christopher Paul. "Magnetic fields and non-local transport in laser plasmas." Thesis, Imperial College London, 2008. http://hdl.handle.net/10044/1/1377.

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The first Vlasov-Fokker-Planck simulations of nanosecond laser-plasma interactions – including the effects of self-consistent magnetic fields and hydrodynamic plasma expansion – will be presented. The coupling between non-locality and magnetic field advection is elucidated. For the largest (initially uniform) magnetic fields externally imposed in recent long-pulse laser gas-jet plasma experiments (12T) a significant degree of cavitation of the B-field will be shown to occur (> 40%) in under 500ps. This is due to the Nernst effect and leads to the re-emergence of non-locality even if the initia

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16

List, Nanna Holmgaard. "Theoretical Description of Electronic Transitions in Large Molecular Systems in the Optical and X-Ray Regions." Doctoral thesis, Department of Physics, Chemistry and Biology, University of Southern Denmark, Denmark, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-201156.

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The size and conformational complexity of proteins and other large systems represent major challenges for today's methods of quantum chemistry.This thesis is centered around the development of new computational tools to gain molecular-level insight into electronic transitions in such systems. To meet this challenge, we focus on the polarizable embedding (PE) model, which takes advantage of the fact that many electronic transitions are localized to a smaller part of the entire system.This motivates a partitioning of the large system into two regions that are treated at different levels of theor

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17

Paula, Netto Tibério de. "Correções de origem quântica para a ação do vácuo e suas aplicações." Universidade Federal de Juiz de Fora (UFJF), 2017. https://repositorio.ufjf.br/jspui/handle/ufjf/6787.

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18

Gu, Sijia. "Contribution to broadband local characterization of materials by near-field microwave microscopy." Thesis, Lille 1, 2016. http://www.theses.fr/2016LIL10175/document.

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Les microscopes champ proche micro-ondes sont des instruments émergents pour la caractérisation de matériaux. Dans ce travail, un microscope champ proche micro-ondes fait maison est d'abord décrit et analysé en termes de résolution et de largeur de bande de fréquences de fonctionnement. Ensuite, il est mis en œuvre pour la caractérisation d'une grande variété de matériaux tels que par exemple des métaux, des semi-conducteurs, des diélectriques, des liquides et des nanomatériaux 2D. Le système intégre un interférométre pour améliorer la sensibilité de la mesure pour des fréquences de fonctionne

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19

Almeida, Uirá Norberto Matos de. "Resolubilidade local de campos vetoriais reais." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/55/55135/tde-23042014-163412/.

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Nesta dissertação vamos estudar alguns importantes resultados acerca da resolubilidade local de operadores lineares de primeira ordem. Mais especificamente, seja o campo vetorial singular L em \'R POT. n\' e dado por: L = \'\\SIGMA SUP. m\' . INF. j=1\' a IND. j\' (x) \'SUP. \\PARTIAL\' INF. \\PARTIAL x INF. j\'. Esta trabalho dirige-se ao estudo da resolubilidade local de L, isto é, dada f \'PERTENCE A\' \' C POT. INFINITO\' (\'R POT. n\') e dado \'x IND. 0\' \'PERTENCE A\' \'R POT. n queremos encontrar u \'PERTENCE A\' D\'(\'R POT.n \') tal que Lu = f numa vizinhança de \'x INF. 0\'. Será

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20

Rosu, Roxana Gabriela. "Parametric approaches for modelling local structure tensor fields with applications to texture analysis." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0102/document.

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Cette thèse porte sur des canevas méthodologiques paramétriques pour la modélisation de champs de tenseurs de structure locaux (TSL) calculés sur des images texturées. Estimé en chaque pixel, le tenseur de structure permet la caractérisation de la géométrie d’une image texturée à travers des mesures d’orientation et d’anisotropie locales. Matrices symétriques semi-définies positives, les tenseurs de structure ne peuvent pas être manipulés avec les outils classiques de la géométrie euclidienne. Deux canevas statistiques riemanniens, reposant respectivement sur les espaces métriques a ne invaria

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21

Jondreville, David. "Quantification de groupes p-adiques et applications aux algèbres d'opérateurs." Thesis, Reims, 2017. http://www.theses.fr/2017REIMS010.

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Cette thèse est consacrée à l'étude des déformations des C*-algèbres munies d'une action de groupe, du point de vue de la quantification équivariante non-formelle, dans le cas non-archimédien. Nous construisons une théorie de déformation des C*-algèbres munies d'une action d'un espace vectoriel de dimension finie sur un corps local non-archimédien de caractéristique différente de 2 ainsi que pour des quotients du groupe affine d'un corps local dont le corps résiduel est de cardinal impair. Par ailleurs, nous construisons des familles de 2-cocycles unitaires afin de déformer des groupes quantiq

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22

Daly, Marwa El. "Challenges and potentials of channeling local philanthropy towards development and aocial justice and the role of waqf (Islamic and Arab-civic endowments) in building community foundations." Doctoral thesis, Humboldt-Universität zu Berlin, Philosophische Fakultät III, 2012. http://dx.doi.org/10.18452/16511.

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Diese Arbeit bietet eine solide theoretische Grundlage zu Philanthropie und religiös motivierten Spendenaktivitäten und deren Einfluss auf Wohltätigkeitstrends, Entwicklungszusammenarbeit und einer auf dem Gedanken der sozialen Gerechtigkeit beruhenden Philanthropie. Untersucht werden dafür die Strukturen religiös motivierte Spenden, für die in der islamischen Tradition die Begriffe „zakat“, „Waqf“ oder im Plural auch „awqaf-“ oder „Sadaqa“ verwendet werden, der christliche Begriff dafür lautet „tithes“ oder „ushour“. Aufbauend auf diesem theoretischen Rahmenwerk analysiert die qualitative

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23

Tunguz, Bojan. "Non-local Gauge Field Theory /." 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3250337.

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Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2006.<br>Source: Dissertation Abstracts International, Volume: 68-02, Section: B, page: 1042. Adviser: Yoshitsugu Oono. Includes bibliographical references (leaves 105-108) Available on microfilm from Pro Quest Information and Learning.

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24

Li, Gang [Verfasser]. "Non-local correlations within dynamical mean field theory / vorgelegt von Li, Gang." 2009. http://d-nb.info/993556701/34.

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25

Antony, Daniel Sanju. "Performance Analysis of Non Local Means Algorithm using Hardware Accelerators." Thesis, 2016. http://etd.iisc.ac.in/handle/2005/2932.

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Image De-noising forms an integral part of image processing. It is used as a standalone algorithm for improving the quality of the image obtained through camera as well as a starting stage for image processing applications like face recognition, super resolution etc. Non Local Means (NL-Means) and Bilateral Filter are two computationally complex de-noising algorithms which could provide good de-noising results. Due to its computational complexity, the real time applications associated with these letters are limited. In this thesis, we propose the use of hardware accelerators such as GPU (Grap

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26

Antony, Daniel Sanju. "Performance Analysis of Non Local Means Algorithm using Hardware Accelerators." Thesis, 2016. http://etd.iisc.ernet.in/handle/2005/2932.

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Image De-noising forms an integral part of image processing. It is used as a standalone algorithm for improving the quality of the image obtained through camera as well as a starting stage for image processing applications like face recognition, super resolution etc. Non Local Means (NL-Means) and Bilateral Filter are two computationally complex de-noising algorithms which could provide good de-noising results. Due to its computational complexity, the real time applications associated with these letters are limited. In this thesis, we propose the use of hardware accelerators such as GPU (Grap

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27

Deepu, S. P. "Non-Local Continuum Models for Damage in Solids and Delamination of Composites." Thesis, 2017. http://etd.iisc.ac.in/handle/2005/4206.

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The focus of the thesis is on developing new damage models for brittle materials and using these to study delamination of composite structures. Chapter 1 gives an introductory literature review in order to motivate the work undertaken in the chapters to follow. Chapter 2 deals with a new micropolar damage model for delamination in composites. By combining phase field theory and peridynamics, Chapter 3 develops a new formalism to study damage in brittle materials under dynamic loading. Chapter 4 exploits and extends this idea for modelling delamination of composites. An extended chapter-wise su

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28

Liu, Lulu. "Nonlinear Preconditioning and its Application in Multicomponent Problems." Diss., 2015. http://hdl.handle.net/10754/583375.

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The Multiplicative Schwarz Preconditioned Inexact Newton (MSPIN) algorithm is presented as a complement to Additive Schwarz Preconditioned Inexact Newton (ASPIN). At an algebraic level, ASPIN and MSPIN are variants of the same strategy to improve the convergence of systems with unbalanced nonlinearities; however, they have natural complementarity in practice. MSPIN is naturally based on partitioning of degrees of freedom in a nonlinear PDE system by field type rather than by subdomain, where a modest factor of concurrency can be sacrificed for physically motivated convergence robustness. ASPIN

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29

Yokono, Jerry Jun, and Tomaso Poggio. "Evaluation of sets of oriented and non-oriented receptive fields as local descriptors." 2004. http://hdl.handle.net/1721.1/30454.

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Local descriptors are increasingly used for the task of object recognition because of their perceived robustness with respect to occlusions and to global geometrical deformations. We propose a performance criterion for a local descriptor based on the tradeoff between selectivity and invariance. In this paper, we evaluate several local descriptors with respect to selectivity and invariance. The descriptors that we evaluated are Gaussian derivatives up to the third order, gray image patches, and Laplacian-based descriptors with either three scales or one scale filters. We compare selectivity an

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30

Mercer, Christine Joy. "'Being there' when one's spouse is hospitalised in a non-local tertiary centre : a thesis presented in fulfilment of the requirements for the degree of Doctor of Philosophy in Nursing at Massey University, Palmerston North, New Zealand." 2006. http://hdl.handle.net/10179/1458.

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Illness that requires hospitalisation is a potential cause of anxiety for the entire family. Furthermore, increases in technology and specialisation of hospital services have resulted in increasing numbers of patients being transferred to centralised tertiary hospitals. There is limited international and national literature that explores the phenomenon of having one's spouse hospitalised in non-local tertiary centres. Therefore, this study was conducted with the aim of exploring the experiences of those whose spouses were hospitalised in non-local tertiary settings. Understanding of the experi

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31

Veselý, Vítek. "Fyzika nebodových objektů v silných gravitačních polích." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-405471.

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We study several different models of extended bodies in gravitational fields. Firstly, we revisit the glider model of a dumbbell-like oscillating body. We develop an independent scheme to integrate the equations of motion. We study the radial fall of a Newtonian spring, calculate the position shifts of the spring and find the critical value of the spring constant which cannot overcome the tidal forces. We argue that the relativistic glider model is unphysical due to its behaviour in the critical regions. Secondly, we show that Dixon's theory of extended bodies predicts a geodesic motion of the

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