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Dissertations / Theses on the topic 'Vertexer'

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Published: 14 March 2023

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1

Kohn, Eduardo. "Vertedor do tipo labirinto." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/3/3147/tde-11122006-142016/.

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A crista ou soleira de um vertedor, que é a parte superior e que está em contato com a água, tem em geral um desenvolvimento em planta linear, no sentido transversal ao do escoamento. Nos vertedores do tipo labirinto esse desenvolvimento em planta não é linear, é composto de um ou mais ciclos, os quais podem ter uma forma triangular ou trapezoidal. A vantagem do uso desse tipo de obra hidráulica é o aumento do comprimento total da soleira para uma mesma largura, o que se traduz em um aumento da capacidade de vazão da estrutura. A utilização de vertedores do tipo labirinto é particularmente van
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2

Lewis, Jason Robert. "Vertex-edge and edge-vertex parameters in graphs." Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1193079748/.

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3

Zaccara, Luciana. "Caratterizzazione biomeccanica di vertebre umane." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9305/.

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Le fratture vertebrali sono tra le principali cause dell’incremento della mortalità. Queste sono dovute principalmente a traumi, tumori o particolari patologie metaboliche che colpiscono l’osso. Il tratto maggiormente interessato è quello toraco-lombare in quanto deve sopportare la maggior parte dei carichi. Risulta quindi necessario comprendere come la colonna vertebrale risponde ai carichi così da studiare e sviluppare nuovi protocolli e trattamenti per disordini del tratto spinale. Informazioni quantitative possono essere ottenute mediante test in vitro. Questi hanno alcune limitazioni dovu
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4

Berra, Francesco. "Caratterizzazione Biomeccanica di vertebre umane." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/5296/.

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5

D'Amico, Giulia. "Caratterizzazione biomeccanica di vertebre umane." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8556/.

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Metastasi ossee, osteoporosi e traumi sono le cause più comuni di fratture vertebrali che possono portare a conseguenze severe. In particolare, le fratture determinate da patologie e dall’invecchiamento colpiscono soprattutto il tratto toraco-lombare che è quello che sopporta la maggior parte dei carichi. Inoltre, le attività quotidiane inducono dei complessi scenari di carico sulla colonna vertebrale. Pertanto la misura di carichi in vivo ha un grande interesse clinico e biomeccanico dal momento che può essere necessaria per studiare il mal di schiena, le fratture vertebrali, il progetto di i
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6

Niu, Liang. "The Vertex Primitive and Vertex Bi-primitive s-arc regular graphs." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1221597829.

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7

Bianco, Simone [Verfasser]. "Tracking and vertex reconstruction with the PANDA Micro-Vertex-Detector / Simone Bianco." Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://d-nb.info/104497155X/34.

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8

Roney, J. Michael (John Michael) 1958 OPAL Carleton University Dissertation Physics. "The OPAL vertex detector." Ottawa.:, 1989.

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9

Masum, Mohammad. "Vertex Weighted Spectral Clustering." Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/etd/3266.

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Spectral clustering is often used to partition a data set into a specified number of clusters. Both the unweighted and the vertex-weighted approaches use eigenvectors of the Laplacian matrix of a graph. Our focus is on using vertex-weighted methods to refine clustering of observations. An eigenvector corresponding with the second smallest eigenvalue of the Laplacian matrix of a graph is called a Fiedler vector. Coefficients of a Fiedler vector are used to partition vertices of a given graph into two clusters. A vertex of a graph is classified as unassociated if the Fiedler coefficient of the v
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10

Arauz, Ivan Juncioni de. "Vertedor de superfície e escoamento sob comportas." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/3/3147/tde-12092005-212331/.

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Os vertedores são estruturas hidráulicas construídas para controlar o nível d’água do reservatório, permitindo a passagem das vazões escoadas com a máxima eficiência possível sem provocar problemas à estrutura. Para atingir este objetivo, as condições de aproximação do escoamento à estrutura e a forma geométrica do perfil vertente são muito importantes. O controle da soleira por comportas provoca uma mudança significativa nas condições de escoamento sobre o perfil vertente. O posicionamento e a forma da comporta tem forte influência no comportamento do coeficiente de vazão e nas pressões sobre
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11

Weigel, Martin. "Vertex Models on Random Graphs." Doctoral thesis, Universitätsbibliothek Leipzig, 2004. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-37308.

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Diese Arbeit befaßt sich mit der Koppelung von Vertex-Modellen an die planaren $\phi^4$-Zufallsgraphen des Zugangs zur Quantengravitation über dynamische Polygonifizierungen. Das betrachtete System hat eine doppelte Bedeutung, einerseits als die Koppelung einer konformen Feldtheorie mit zentraler Ladung $C=1$ an zweidimensionale Euklidische Quantengravitation, andererseits als Anwendung von geometrischer, "annealed" Unordnung auf ein prototypisches Modell der statistischen Mechanik. Da das Modell mit Hilfe einer großangelegten Reihe von Monte Carlo Simulationen untersucht wird, müssen entsprec
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12

Niesink, Patrick. "The Vertex-Switching Reconstruction Problem." Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28629.

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Switching on a vertex of a graph involves swapping the sets of neighbours and non-neighbours of the vertex. The resultant graph is called a switch card of the original graph. The switch deck of a graph is the collection of all of its switch cards. The vertex-switch reconstruction problem then asks which graphs (termed non-VSR graphs) cannot be uniquely determined from their switch decks. A review of the published knowledge about this problem is followed by an improved bound on the number of edges in a non-VSR graph, and a bound on the size of the automorphism group of a non-VSR graph. Finally,
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13

Myhill, Richard Graham. "Automorphisms and twisted vertex operators." Thesis, Durham University, 1987. http://etheses.dur.ac.uk/6674/.

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This work is an examination of various aspects of twisted vertex operator representations of Kac-Moody algebras. It starts with an introduction to Kac-Moody algebras and string theories, including a discussion of the propagation of strings on orbifolds. String interactions in a subclass of such models naturally involve twisted vertex operators. The centrally extended loop algebra realization of Kac-Moody algebras is used to explain why the inequivalent gradations of basic representations of Kac-Moody algebras g(^r) associated with g are in one-to-one correspondence with the conjugacy classes o
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14

Skliros, Dimitri P. "Vertex operators for cosmic strings." Thesis, University of Sussex, 2011. http://sro.sussex.ac.uk/id/eprint/48134/.

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Superstring theory posits that as complicated as nature may seem to the naive observer, the variety of observed phenomena may be explained by postulating that at the fundamental scale, matter is composed of lines of energy, namely strings. These oscillating lines would be elementary and would hence have no substructure. They are expected to be incredibly tiny, their line-like structure would become noticeable at scales close to the string scale (which may lie anywhere from the TeV scale all the way up to the Planck scale) and would appear to be point-like to the macroscopic observer. Internal
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15

Yu, Wen. "Vertex unique labelled subgraph mining." Thesis, University of Liverpool, 2015. http://livrepository.liverpool.ac.uk/2026959/.

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This thesis proposes the novel concept of Vertex Unique Labelled Subgraph (VULS) mining with respect to the field of graph-based knowledge discovery (or graph mining). The objective of the research is to investigate the benefits that the concept of VULS can offer in the context of vertex classification. A VULS is a subgraph with a particular structure and edge labelling that has a unique vertex labelling associated with it within a given (set of) host graph(s). VULS can describe highly discriminative and significant local geometries each with a particular associated vertex label pattern. This
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16

Bacak, Gökşen Ufuktepe Ünal. "Vertex Coloring of A Graph/." [s.l.] : [s.n.], 2004. http://library.iyte.edu.tr/tezler/master/matematik/T000416.pdf.

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17

Pittau, Lorenzo. "Quantum groups and vertex models." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/4118/.

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Nella tesi vengono presentate alcune relazioni fra gruppi quantici e modelli reticolari. In particolare si associa un modello vertex a una rappresentazione di un'algebra inviluppante quantizzata affine e si mostra che, specializzando il parametro quantistico ad una radice dell'unità, si manifestano speciali simmetrie.
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18

Dross, François. "Vertex partition of sparse graphs." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTS011/document.

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Le Théorème des Quatre Couleurs, conjecturé en 1852 et prouvé en 1976, est à l'origine de l'étude des partitions des sommets de graphes peu denses. Il affirme que toute carte plane peut être coloriée avec au plus quatre couleurs différentes, de telle manière que deux régions qui partagent une frontière aient des couleurs différentes. Énoncé en terme de théorie des graphes, cela veut dire que tout graphe planaire, c'est à dire tout graphe qui peut être représenté dans le plan sans que deux arêtes ne se croisent, peut voir son ensemble de sommets partitionné en quatre ensembles tels que chacun d
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19

KOSSAI, DEBORD CHANTAL. "Diagnostic radiologique de l'hydatidose vertebrale." Clermont-Ferrand 1, 1988. http://www.theses.fr/1988CLF11044.

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20

LAMBERON, NOEL. "L'osteo-arthropathie nerveuse vertebrale : a propos d'une observation." Besançon, 1992. http://www.theses.fr/1992BESA3042.

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21

PAOLI, ALAIN. "Osteotomies vertebrales posterieures dans le traitement des cyphoses rigides severes : a propos de 15 cas." Aix-Marseille 2, 1988. http://www.theses.fr/1988AIX20511.

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22

Bonidan, Olivier. "Morphometrie vertebrale : etude de la reproductibilite ; definition des valeurs normales." Amiens, 1990. http://www.theses.fr/1990AMIEM110.

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23

Piel, Matthieu. "ETUDE CINEMATIQUE ET FONCTIONNELLE DU CENTROSOME DESCELLULES DE VERTEBRE." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2001. http://tel.archives-ouvertes.fr/tel-00012067.

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Cette thèse tente d'aborder, avec quelques détours, deux questions centrales concernant le<br />centrosome des vertébrés : son rôle dans la motilité cellulaire et son rôle dans le cycle de<br />division cellulaire.<br />Après une introduction en trois parties (un tour d'horizon dans une optique historique, un<br />exposé détaillé des connaissances actuelles, puis une réflexion plus générale sur des bases<br />phylogénétiques), deux travaux sont présentés : une étude des rôles respectifs des deux<br />centrioles du centrosome des cellules de vertébrés, puis une étude du comportement<br />partic
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24

Linde, Klaus-Juergen. "Global Vertex Algebras on Riemann Surfaces." Diss., lmu, 2004. http://nbn-resolving.de/urn:nbn:de:bvb:19-30690.

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25

Qin, Yusheng. "On subgraphs of vertex-transitive graphs." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0020/NQ37743.pdf.

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26

Ke, Youqi. "Theory of non-equilibrium vertex correction." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=96987.

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For realistic nanostructures, there are inevitably some degree ofdisorder such as impurity atoms, imperfect lattices, surfaceroughness, etc.. For situations where disorder locate randomly inthe nanostructure, any calculated quantum transport results shouldbe averaged over disorder distributions. A brute force approach isto generate many disorder configurations, calculate each of them,and then average the results. For atomistic first principlesmodeling, such a brute force averaging is computationallyprohibitive - if not impossible, to perform. It is therefore veryimportant and useful to develop
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27

Hollowood, Timothy James. "Twisted strings, vertex operators and algebras." Thesis, Durham University, 1988. http://etheses.dur.ac.uk/6424/.

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This work is principally concerned with the operator approach to the orbifold compactification of the bosonic string. Of particular importance to operator formalism is the con formal structure and the operator product expansion. These are introduced and discussed in detail. The Frenkel-Kac-Segal mechanism is then examined and is shown to be a consequence of the duality of dimension one operators of an analytic bosonic string compactified on a certain torus. Possible generalizations to higher dimension operators are discussed, this includes the cross-bracket algebra which plays a central role i
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28

Van, Ekeren Jethro (Jethro William). "Modular invariance for vertex operator superalgebras." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/73375.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 133-134).<br>We generalize Zhu's theorem on modular invariance of characters of vertex operator algebras (VOAs) to the setting of vertex operator superalgebras (VOSAs) with rational, rather than integer, conformal weights. To recover SL₂ (Z)-invariance, it turns out to be necessary to consider characters of twisted modules. Initially we assume our VOSA to be rational, then we replace rationality with a different (weaker) conditi
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29

Heluani, Reimundo. "Super symmetric vertex algebras and supercurves." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/34546.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 2006.<br>Includes bibliographical references (p. 149-151).<br>We define and study the structure of SUSY Lie conformal and vertex algebras. This leads to effective rules for computations with superfields. Given a strongly conformal SUSY vertex algebra V and a supercurve X, we construct a vector bundle [ ... ] on X, the fiber of which, is isomorphic to V. Moreover, the state-field correspondence of V canonically gives rise to (local) sections of these vector bundles. We also define chiral algebras on any supercurve X,
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30

Moitra, Ankur. "Vertex sparsification and universal rounding algorithms." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/66019.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 125-129).<br>Suppose we are given a gigantic communication network, but are only interested in a small number of nodes (clients). There are many routing problems we could be asked to solve for our clients. Is there a much smaller network - that we could write down on a sheet of paper and put in our pocket - that approximately preserves all the relevant communication properties of the original netw
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31

Lucke, Klaus. "On representations of vertex operator algebras." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627367.

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32

Olbermann, Heiner. "Quantum field theory via vertex algebras." Thesis, Cardiff University, 2010. http://orca.cf.ac.uk/54994/.

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We investigate an alternative formulation of quantum field theory that elevates the Wilson- Zimmermann operator product expansion (OPE) to an axiom of the theory. We observe that the information contained in the OPE coefficients may be straightforwardly repackaged into "vertex operators". This way of formulating quantum field theory has quite obvious similarities to the theory of vertex algebras. As examples of this framework, we discuss the free massless boson in D dimensions and the massless Thirring model. We set up perturbation theory for vertex algebras. We discuss a general theory of per
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33

Gaskill, Patrick. "Modular Forms and Vertex Operator Algebras." VCU Scholars Compass, 2013. http://scholarscompass.vcu.edu/etd/3177.

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In this thesis we present the connection between vertex operator algebras and modular forms which lies at the heart of Borcherds’ proof of the Monstrous Moonshine conjecture. In order to do so we introduce modular forms, vertex algebras, vertex operator algebras and their partition functions. Each notion is illustrated with examples.
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34

Fadhal, Emad Alden Sir Alkhatim Abraham. "Strong simplicity of groups and vertex - transitive graphs." Thesis, University of the Western Cape, 2010. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_6774_1362393687.

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<p>In the course of exploring various symmetries of vertex-transitive graphs, we introduce the concept of quasi-normal subgroups in groups. This is done since the symmetries of vertex-transitive graphs are intimately linked to those, fait accompli, of groups. With this, we ask if the concept of strongly simple groups has a place for consideration. We have shown that for n &gt<br>5, An, the alternating group on n odd elements, is not strongly simple.</p>
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35

RAMAMONJISOA-RAJOELISOLO, MIRANA. "Tuberculose vertebrale de l'arc posterieur : a propos d'une observation privilegiee." Aix-Marseille 2, 1990. http://www.theses.fr/1990AIX20195.

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36

Weijers, Elisabeth Maria Johannes Theresia. "Nietzsche als verteller hoe het lichaam wordt wat het is /." Kampen : Amsterdam : Agora ; Universiteit van Amsterdam [Host], 2000. http://dare.uva.nl/document/83443.

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37

Clark, David. "Algebraic Analysis of Vertex-Distinguishing Edge-Colorings." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/1053.

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Vertex-distinguishing edge-colorings (vdec colorings) are a restriction of proper edge-colorings. These special colorings require that the sets of edge colors incident to every vertex be distinct. This is a relatively new field of study. We present a survey of known results concerning vdec colorings. We also define a new matrix which may be used to study vdec colorings, and examine its properties. We find several bounds on the eigenvalues of this matrix, as well as results concerning its determinant, and other properties. We finish by examining related topics and open problems.
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38

Saito, Yoshihisa. "Quantum toroidal algebras and their vertex representations." 京都大学 (Kyoto University), 1997. http://hdl.handle.net/2433/202423.

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39

Turner, Jason M. "Modelling disordered foams using the vertex ensemble." Thesis, Imperial College London, 1998. http://hdl.handle.net/10044/1/11940.

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40

Frühwirth, Rudolf, Korbinian Eckstein, and Sylvia Frühwirth-Schnatter. "Vertex finding by sparse model-based clustering." IOP Publishing, 2016. http://epub.wu.ac.at/6173/1/jop.pdf.

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The application of sparse model-based clustering to the problem of primary vertex finding is discussed. The observed z-positions of the charged primary tracks in a bunch crossing are modeled by a Gaussian mixture. The mixture parameters are estimated via Markov Chain Monte Carlo (MCMC). Sparsity is achieved by an appropriate prior on the mixture weights. The results are shown and compared to clustering by the expectation-maximization (EM) algorithm.
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41

Rudgyard, Michael A. "Cell vertex methods for compressible gas flows." Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279991.

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42

Pinzon, Daniel F. "VERTEX ALGEBRAS AND STRONGLY HOMOTOPY LIE ALGEBRAS." UKnowledge, 2006. http://uknowledge.uky.edu/gradschool_diss/382.

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Vertex algebras and strongly homotopy Lie algebras (SHLA) are extensively used in qunatum field theory and string theory. Recently, it was shown that a Courant algebroid can be naturally lifted to a SHLA. The 0-product in the de Rham chiral algebra has an identical formula to the Courant bracket of vector fields and 1-forms. We show that in general, a vertex algebra has an SHLA structure and that the de Rham chiral algebra has a non-zero l4 homotopy.
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43

Li, Yin-chiu, and 李燕超. "Min-max theorems on feedback vertex sets." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B42577111.

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44

Awwad, Ahmad M. "Efficient structural outlooks for Vertex Product Networks." Thesis, University of Glasgow, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.400742.

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45

Cosh, Benjamin Colin. "Vertex splitting and connectivity augmentation in hypergraphs." Thesis, Goldsmiths College (University of London), 2000. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272126.

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We consider problems of splitting and connectivity augmentation in hypergraphs. In a hypergraph G = (V +s, E), to split two edges su, sv, is to replace them with a single edge uv. We are interested in doing this in such a way as to preserve a defined level of connectivity in V . The splitting technique is often used as a way of adding new edges into a graph or hypergraph, so as to augment the connectivity to some prescribed level. We begin by providing a short history of work done in this area. Then several preliminary results are given in a general form so that they may be used to tackle seve
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46

SPERANZA, YGOR HECHT. "OBJECT FRACTURE ANIMATION BASED ON VERTEX CLUSTERS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=21082@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>Neste trabalho, estendemos o método de simulaão de objetos deformáveis de Muller et al. (2005) para simular fraturas. Em Muller et al., os vértices da superfície do objeto são tratados como partículas, sujeitas a forças externas ao objeto e a uma forçainterna de restituição, que tenta restaurar a forma do objeto através de uma técnica de casamento de forma. Esse método permite-nos simular efeitos como alongamento e flexão de forma estável e, por ser geometricamente motivado, é ideal para situações que não exijam realismo físico, como a área
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47

Kettle, Nathan. "Vertex disjoint subgraphs and non-repetitive sequences." Thesis, University of Cambridge, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.707981.

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48

Wang, Weiqiang. "Representations of vertex operator algebras and superalgebras." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36999.

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49

Melotti, Paul. "Modèles intégrables de spins, vertex et boucles." Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS258.

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Cette thèse porte sur divers problèmes de mécanique statistique, liée à l'étude des modèles intégrables. Dans ces modèles, l'existence de symétries particulières, exprimées par exemple par les équations de Yang-Baxter ou transformations "triangle-étoile'', permettent de donner des formules exactes pour les observables d'intérêt. Dans un premier temps, nous étudions la transformation triangle-étoile du modèle d'Ising, reformulée par Kashaev en une équation d'évolution polynomiale. Nous montrons que cette évolution fait apparaître des objets combinatoires : les modèles de boucles C2(1). Nous mon
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50

Hlavacek, Amy Lee. "9-vertex irreducible graphs on the torus /." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487944660932981.

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