Dissertations / Theses: 'RAMTEL'

1

Teh, Wen Chean. "Ramsey Algebras and Ramsey Spaces." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1357244115.

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Ramel, Jean-Yves Vincent Nicole. "Interprétation automatique de dessins." Villeurbanne : Doc'INSA, 2000. http://docinsa.insa-lyon.fr/these/pont.php?id=ramel.

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3

Ishii, Minoru 1945. "Small Ramsey numbers." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63235.

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4

Simmons, Jill. "CO-irredundant Ramsey numbers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0005/MQ36621.pdf.

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5

McNamara, James N. "Two new Ramsey numbers /." Online version of thesis, 1992. http://hdl.handle.net/1850/11146.

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6

Xu, Zibo. "A stochastic Ramsey theorem." Thesis, London School of Economics and Political Science (University of London), 2010. http://etheses.lse.ac.uk/2211/.

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A stochastic extension of Ramsey's theorem is established. Any Markov chain generates a filtration relative to which one may define a notion of stopping time. A stochastic colouring is any k-valued colour function defined on all pairs consisting of a bounded stopping time and a finite partial history of the chain truncated before this stopping time. For any bounded stopping time and any infinite history of the Markov chain, let denote the finite partial history up to time . It is first proved for k = 2 that for every 0 there is an increasing sequence 1 2 of bounded stopping times having the property that, with probability greater than 1, the history is such that the values assigned to all pairs , with j, are the same. Just as with the classical Ramsey theorem, an analogous finitary stochastic Ramsey theorem is obtained. Furthermore, with appropriate finiteness assumptions, the time one must wait for the last stopping time (in the finitary case) is uniformly bounded, independently of the probability transitions. The results are generalised to any finite number k of colours. A stochastic extension is derived for hypergraphs, but with rather weaker conclusions. The stochastic Ramsey theorem can be applied to the expected utility of a Markov chain to conclude that on some infinite increasing sequence of bounded stopping times the expected utility remains the same to within (also in probability).

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Jin, Xia. "Ramsey numbers involving a triangle : theory & algorithms /." Online version of thesis, 1993. http://hdl.handle.net/1850/12147.

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8

Liu, Sha [Verfasser]. "Study of molecular matter wave interferometers in Ramsey and Ramsey-Bordé configuration / Sha Liu." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover, 2010. http://d-nb.info/1004264488/34.

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9

Müller-Römer, Frank. "Pyramidenbau mit Rampen und Seilwinden." Diss., lmu, 2008. http://nbn-resolving.de/urn:nbn:de:bvb:19-80647.

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10

Tressler, Eric. "Integral and Euclidean Ramsey theory." Diss., [La Jolla] : University of California, San Diego, 2010. http://wwwlib.umi.com/cr/ucsd/fullcit?p3404684.

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Thesis (Ph. D.)--University of California, San Diego, 2010.
Title from first page of PDF file (viewed June 15, 2010). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (leaves 42-44).

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11

Law, Ka-ho. "Some topics in Ramsey theory." Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B31998276.

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12

Denley, Tristan Mark Joseph. "Cycles, trees and Ramsey numbers." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283960.

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13

Goodman, J. S. "Thermal analysis of ramjet engines." Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.445768.

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14

Conlon, D. "Upper bounds for Ramsey numbers." Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597892.

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The Ramsey number r(G) of a graph G is the smallest number n such that, in any two-colouring of the edges of the complete graph on n vertices, there is guaranteed to exist a monochromatic copy of G. In this thesis, we study the size of r(G) for a number of different types of graph G, proving several new upper bounds. Our main result is an improvement upon the upper bound for the most classical case of Ramsey’s theorem, finding the Ramsey number of the complete graph K_k. We also look at the closely related question of how many K_ks a two-colouring of a large K_n must contain, obtaining several interesting new results. After a brief discussion of bipartite Ramsey numbers we move on to our other main results, dealing with Ramsey numbers of sparse graphs. We prove, in particular, that a bipartite graph G with n vertices and maximum degree Δ has Ramsey number at most 2^c^Δn. Because of a construction of Graham, Rödl and Ruciński, we know that this result is, up to the constant c, best possible. We show, moreover, how to extend the method to hypergraphs in order to obtain a new proof of the sparse hypergraph Ramsey theorem: if H is a hypergraph with n vertices and maximum degree Δ the Ramsey number of H is at most c(Δ)n for some constant c(Δ) depending only on Δ. Note that these results were obtained simultaneously and independently by Jacob Fox and Benny Sudakov.

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15

Law, Ka-ho, and 羅家豪. "Some topics in Ramsey theory." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B31998276.

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16

Luehrsen, Russell P. "Solid fuel ramjet infrared signature." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/26778.

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17

Cruse, Pierre. "Can Ramsey help the realist?" Thesis, King's College London (University of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286322.

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18

Bode, Jens-Peter. "Ramsey-Zahlen für verschiedene Gastgebergraphen." Göttingen Cuvillier, 2007. http://d-nb.info/999187279/04.

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19

Bannani, Faiz (Faiz Khalil) Carleton University Dissertation Mathematics. "Bounds on classical Ramsey numbers." Ottawa, 1988.

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20

Horehleďová, Eliška. "Jean-Pierre Rampal a Československo." Master's thesis, Akademie múzických umění v Praze.Hudební a taneční fakulta. Knihovna, 2012. http://www.nusl.cz/ntk/nusl-155926.

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This master's thesis captures Jaen-Pierre Rampal not only as a highly recognized flutist. It also provides an overview of his musical and pedagogical refinement of opinions and experience gained during his life. The major part of this work focuses on the relationship of Jean-Pierra Rampal to Czechoslovakia and to personalities linked to him. In the first two parts which are necessary for the overall understanding of his personality, I describe in detail the music activity of Jean-Pierre Rampal, his biography, educational activities, flute brands he preferred and his relationship to baroque music. In conclusion, I mentioned a few memories of Jean-Pierre Rampal his friends and colleagues and also outlined the activities of the Association Jean-Pierre Rampal and his discography.

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21

Guo, Jing. "Freeform Rammed Earth Shell Construction." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1491312964445038.

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22

Armulik, Villem-Adolf. "Ramsey Numbers and Two-colorings ofComplete Graphs." Thesis, Linnéuniversitetet, Institutionen för matematik (MA), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-44610.

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Ramsey theory has to do with order within disorder. This thesis studies two Ramsey numbers, R(3; 3) and R(3; 4), to see if they can provide insight into finding larger Ramsey numbers. The numbers are studied with the help of computer programs. In the second part of the thesis we try to create a coloring of K45 which lacks monochromatic K5 and where each vertex has an equal degree for both color of edges. The results from studying R(3; 3) and R(3; 4) fail to give any further insight into larger Ramsey numbers. Every coloring of K45 we produce contains a monochromatic K5.

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23

Ozugur, Ozgur. "Ramsey Pricing In Turkey Postal Services." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/2/669697/index.pdf.

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This study aims to provide an empirical investigation of Postal Services pricing in Turkey by way of computing Ramsey prices and examining the sensitivity of Ramsey prices to changes in demand and cost parameters. In this study, the Ramsey pricing problem is stated as maximizing a welfare function subject to the Post Office attaining a certain degree of profitability. The conditions necessary for the Post Office to be able to price efficiently have implications for Ramsey pricing. We estimate demand functions and cost structure of letters and express mail using data from Turkish Postal Services. The robustness of the Ramsey rule is assessed under alternative estimates of demand and similarly, in the absence of reliable data, under alternative intervals of marginal cost. Ramsey prices for two letter categories and welfare gains of moving from the existing pricing structure to Ramsey are determined and examined. Sensitivity analysis indicates that the existing policy is not Ramsey optimal and that this is a fairly robust result.

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24

Halbeisen, Lorenz J. "Ramsey properties of reals and partitions /." [S.l.] : [s.n.], 1994. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10828.

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25

Jaquin, Paul A. "Analysis of historic rammed earth construction." Thesis, Durham University, 2008. http://etheses.dur.ac.uk/2169/.

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Rammed earth is an ancient construction technique which has recently become popular for sustainable building. Soil is compacted in removable formwork to make a homogeneous wall. A lack of experimental evidence and a poor fundamental understanding means that current design guidelines are highly conservative and inappropriate for the analysis of historic rammed earth buildings. This thesis shows that rammed earth can be viewed in a geotechnical engineering framework and that doing so helps to explain many aspects of the material behaviour. Rammed earth walls were built and tested in the laboratory then modelled using techniques available to practising engineers. Unsaturated soil mechanics was considered useful in explaining much of the behaviour of rammed earth. This was investigated through a series of uniaxial compression tests and the results are explained using unsaturated soil mechanics. Visits to Spain and India were made to investigate rammed earth in the field. Historic construction techniques, modes of failure and repair strategies were studied. The unsaturated nature of rammed earth is used to explain modes of failure and to suggest the most appropriate repair strategies

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Grinshpun, Andrey Vadim. "Some problems in Graph Ramsey Theory." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/97767.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mathematics, 2015.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 149-156).
A graph G is r-Ramsey minimal with respect to a graph H if every r-coloring of the edges of G yields a monochromatic copy of H, but the same is not true for any proper subgraph of G. The study of the properties of graphs that are Ramsey minimal with respect to some H and similar problems is known as graph Ramsey theory; we study several problems in this area. Burr, Erdös, and Lovász introduced s(H), the minimum over all G that are 2- Ramsey minimal for H of [delta](G), the minimum degree of G. We find the values of s(H) for several classes of graphs H, most notably for all 3-connected bipartite graphs which proves many cases of a conjecture due to Szabó, Zumstein, and Zürcher. One natural question when studying graph Ramsey theory is what happens when, rather than considering all 2-colorings of a graph G, we restrict to a subset of the possible 2-colorings. Erdös and Hajnal conjectured that, for any fixed color pattern C, there is some [epsilon] > 0 so that every 2-coloring of the edges of a Kn, the complete graph on n vertices, which doesn't contain a copy of C contains a monochromatic clique on n[epsilon] vertices. Hajnal generalized this conjecture to more than 2 colors and asked in particular about the case when the number of colors is 3 and C is a rainbow triangle (a K3 where each edge is a different color); we prove Hajnal's conjecture for rainbow triangles. One may also wonder what would happen if we wish to cover all of the vertices with monochromatic copies of graphs. Let F = {F₁, F₂, . . .} be a sequence of graphs such that Fn is a graph on n vertices with maximum degree at most [delta]. If each Fn is bipartite, then the vertices of any 2-edge-colored complete graph can be partitioned into at most 2C[delta] vertex disjoint monochromatic copies of graphs from F, where C is an absolute constant. This result is best possible, up to the constant C.
by Andrey Vadim Grinshpun.
Ph. D.

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27

Wagner, Peter. "The Ramsey theory of multicoloured graphs." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614225.

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Bebeachibuli, Aida. "Espectroscopia Ramsey em um chafariz atômico." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-19012008-090258/.

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Apresentamos os aspectos mais relevantes para se realizar um chafariz a átomos frios de 133Cs, para operá-lo como um padrão primário de tempo e freqüência para realizar a definição do segundo. O objetivo principal desse trabalho foi a otimização do sistema experimental do chafariz de átomos em duas partes críticas: a região de interação e o sistema de detecção. Além disso, otimizamos as diversas fases da manipulação óptica que fazem parte do ciclo de operação de um chafariz com o intuito de aumentar a relação sinal ruído na região de detecção. Quando os átomos são lançados com uma velocidade de 3,39ms-1, atingem o ápice a 60cm acima da região de captura e passam 360ms na região de vôo livre. A temperatura dos átomos na região de detecção não ultrapassa 15,5K e a diferença de população observada através das Franjas de Ramsey, que são a assinatura característica de um padrão de freqüência atômico, tem a largura a meia altura de 1,4Hz. A largura de linha e a relação sinal ruído da franja implicam em uma estabilidade a curto prazo de 5,18×1012. Alguns causadores de deslocamentos de freqüência como a radiação de corpo negro, o efeito Doppler de segunda ordem, o efeito gravitacional e o efeito Zeeman de segunda ordem foram avaliados.
We present some relevant aspects for the realization of a 133Cs fountain, intended to operate as a primary frequency standard to realize the definition of the second. The main goal of this work is the optimization of the experimental setup of the atomic fountain in its most critical parts: the interaction region and the detection system. Furthermore, the several phases of the optical manipulation which concern the operation cycle of an atomic fountain were also optimized. These procedures allowed us to increase the signal to noise ratio in the detection signal. When the launching velocity is about 3.39 m/s, the atoms reach the apogee about 60 cm above the capture region and spend 360 ms in the free flight zone. The atomic ensemble temperature in the detection region is about 15.5K and the population difference between the two fundamental level is measured through the Ramsey fringe with a linewidth of 1.4 Hz. This linewidth, allied to the obtained S/N resulted in the measured short-term stability of 5.18×1012. Some frequency shift as the black body radiation shift, gravitational shift, second order Doppler shift and second order Zeeman shift were measured.

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29

Ramier, Julien Gauthier Catherine Chazeau Laurent. "Comportement mécanique d'élastomères chargés." Villeurbanne : Doc'INSA, 2005. http://docinsa.insa-lyon.fr/these/pont.php?id=ramier.

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30

Jönsson, Bodil. "Psykoterapeuten, ramen och rambrottet." Thesis, Ersta Sköndal högskola, S:t Lukas utbildningsinstitut, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:esh:diva-4634.

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Inledning: De psykoterapeutiska ramarna, samt brott mot dessa ramar, är av central betydelse för psykodynamiska terapeuter. Syftet: med denna studie var att undersöka psykoterapeuters rambegrepp, dess mening, samt deras upplevelser av egna rambrott. Frågeställningar: Frågeställningarna var vilken ramen och dess mening var, samt hur psykoterapeuterna upplevde sina egna rambrott. Metod: I studien användes kvalitativ metod och fem psykodynamiska terapeuter intervjuades. Data analyserades med tematisk analys. Resultat: Resultatet visade att deltagarnas rambegrepp skiljde sig åt. Skillnaderna härleddes dels från olika teoribildningar för psykoterapi, dels efter egna ställningstaganden. Vidare tillämpades något olika ramar för olika patienter. Även psykoterapeuternas upplevelser av egna i studien redovisade rambrott uppvisade olikheter så som oro, skam, känsla av misslyckande och tillfredsställelse. Diskussion: Ramar samt avsteg från dessa intog en komplex roll i terapeuternas arbete. Ramar utformades av terapeuterna själva på grundval av terapeutisk inriktning. Brott mot dem kunde ske planerat eller spontant, orsakade sammansatta känsloreaktioner och kunde ge ett bättre eller sämre utfall för patienten.
Introduction: The psychotherapeutic frames, and breaking these frames, is of central significance to psychodynamic therapists. The purpose of this study was to investigate the psychotherapist's concepts of frames, and experiences of personal frame breaks. Problem statement: The questions explored were which the frame and its meaning were, and how the psychotherapists experienced their own frame breaks. Methods: In the study, a qualitative method was used, and five psychodynamic therapists were interviewed. The material was analyzed by thematic analysis. Results: The results showed, that the concepts of frame were differing. The differences were derived partly from different theories of psychotherapy, partly from personal standpoints. Moreover, somewhat differing frames were used for different patients. The psychotherapists' experiences of their own frame breaks also showed differences, such as anxiety, shame, feelings of failure and satisfaction. Discussion: Frames and departures from them take a complex role in the therapists work. Frames are formed by the therapists themselves with their psychotherapeutic orientation as a cornerstone. Breaks to the frames can take place in a planned or unplanned way, cause compounded reactions of feelings and can bring better or worse result for the patient.

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31

Reuter, Dierk Martin. "Investigation of combustion instability in ramjet combustors." Diss., Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/12271.

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32

Del, Rio Francesco. "Distortion mechanism in supersonic combustion ramjet engines." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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Il mio lavoro di tesi è stato incentrato sulla progettazione e la realizzazione di un prototipo di isolator (componente necessaria per il funzionamento dei motori scramjet, utilizzati per velivoli aerospaziali ipersonici) in grado di generare tramite un opportuno dispositivo il meccanismo fluidodinamico che in letteratura viene definito "distortion mechanism". Tramite la tecnica fotografica denominata Schlieren, la quale sfrutta i gradienti di densità all’interno del fluido in esame, ho fotografato le onde di shock generate dal meccanismo suddetto, rendendo così possibile la comprensione del comportamento di queste onde e delle loro interazioni con il boundary layer, con le pareti, ma soprattutto dell’influenza che esse hanno sulle prestazioni di un eventuale propulsore. Da qui è partita una analisi sulle interazioni shock-shock e shock-boundary layer: quest’ultimo fenomeno è di grande interesse in quanto si è notato che non solo viene attivato un meccanismo di distorsione dell’onda stessa, ma che addirittura si manifesta la separazione dello strato limite, generando complessi fenomeni fluidodinamici e termodinamici i quali decrementano l’efficienza non solo dell’isolator bensì del motore stesso.È stato infine previsto come le onde di shock che si propagavano nell’isolator avrebbero potuto affliggere il mixing e la combustione nell’ultimo stage del prototipo, evidenziando le conseguenze che avrebbero generato sull’efficienza generale del ciclo termodinamico. Per concludere il mio lavoro di tesi ho sviluppato alcuni tools in ambiente Matlab utili per poter calcolare le proprietà termodinamiche di un fluido che entra in un inlet di uno scramjet. Per motivi di complessità del problema e per la non assoluta certezza dei fenomeni fluidodinamici e termodinamici che realmente accadono in questi motori (in 3-D), le equazioni utilizzate all’interno del codice sono utili per un’analisi di un fluido quasi monodimensionale.

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33

Solymosi, József. "Ramsey-type results on planar geometric objects /." Zürich, 2001. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=14092.

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34

Calistrate, Dan. "Combinatorial games of Ramsey and Conway types." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0013/NQ34661.pdf.

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35

Stipp, Eugene Heinz. "Bounds for Ramsey numbers in multipartite graphs." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51640.

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Thesis (MSc.)--University of Stellenbosch, 2000.
ENGLISH ABSTRACT: The notion of a classical graph theoretic Ramsey number is generalized by assuming that both the original graph whose edges are arbitrarily bicoloured and the monochromatic subgraphs to be forced are complete, balanced, multipartite graphs, instead of complete graphs as in the standard definition. Some small multipartite Ramsey numbers are found, while upper- and lower bounds are established for others. Analytic arguments as well as computer searches are used.
AFRIKAANSE OPSOMMING: Die klassieke grafiek-teoretiese definisie van ’n Ramsey getal word veralgemeen deur te aanvaar dat beide die oorspronklike grafiek, waarvan die lyne willekeurig met twee kleure gekleur word en die gesogte subgrafieke almal volledige, gebalanseerde, veelledige grafieke is, anders as in die standaard definisie. Klein veelledige Ramsey getalle word gevind, terwyl bo- en ondergrense vir ander daargestel word. Analitiese argumente en rekenaarsoektogte word gebruik.

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36

Riksem, Brita Ramsevik. "Syntaks og ortografi: Nye rammer for språknormering." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for nordistikk og litteraturvitenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-24687.

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I denne oppgåva undersøker eg kva konsekvensar det vil ha for språknormering om ho var basert på generativ grammatikk. Språknormering er ei grein under språkplanlegging, og handlar om å fastsetje konkrete reglar for eit språk. Verksemda dreiar seg i hovudsak om skriftspråket og står ofte i skjeringspunktet mellom vitskap og ideologi. Dette har vore tilfelle i det norske språksamfunnet, der det ofte knyter seg sterke kjensler til språkspørsmål. Forskingsobjektet i generativ grammatikk er ein internalisert og medfødd språkkompetanse. Med denne som grunnlag vil normeringa dermed dreie seg primært om språket sjølv, For å kome fram til den mest adekvate framstillinga av den internaliserte språkkompetansen ser eg på to forskjellige tilnærmingar til minimalismeprogrammet i generativ grammatikk. Desse to tilnærmingane skil seg frå kvarandre når det gjeld korleis dei forklarar syntaktisk strukturbygging og grensesnittet mellom syntaks og leksikon. Tilnærminga eg argumenterer for at er den mest adekvate framstillinga av språkkompetansen, er ei ny-konstruksjonistisk rammeanalyse. Rammeanalysen set opp eit prinsipielt skilje mellom grammatisk ramme og leksikalske innhaldsord. Formelle, grammatiske eigenskapar er knytte til sjølvstendige strukturar eller rammer for setningar, som leksikalske innhaldsord deretter kan setjast inn i. Skiljet mellom system (grammatikk) og innhald (ordstammar) vil ha konsekvensar for ein normeringssituasjon. Hovudargumentet i denne oppgåva er at fastsette språknormer bør spegle internaliserte språknormer. Det grammatiske systemet i dei internaliserte normene viser seg å vere temmeleg fast og robust, og er derfor skildra som essensen i språket. Systemet omfattar då både systemstruktur og systemuttrykk. Fastsette normer for systemet bør følgjeleg vere tronge og faste. Leksikalske innhaldsord har ein friare natur og opnar for språkleg kreativitet og fleksibilitet. Normeringa av desse bør derfor vere liberal. For å konkretisere konsekvensane for normering, har eg nytta vurderingar og døme frå innstillinga til ny nynorsk rettskriving frå 2011. Som ei forlenging av feltet diskuterer eg òg kort nokre konsekvensar teorien har for språkopplæring, ettersom dette er ein sentral arena kor språkbrukaren møter normene.

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37

Walters, Mark Jon. "Ramsey theory, discrepancy theory and related areas." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621647.

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38

Lipparini, Luca. "Studio e ottimizzazione di un ramjet avanzato." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016.

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L'oggetto della seguente tesi riguarda lo studio e l'ottimizzazione di un ramjet avanzato, in particolare è stata studiata la parte dedicata all'alimentazione di tipo pulsante per la spinta a punto zero tramite simulazioni fluidodinamiche.

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39

Benevides, Fabricio Siqueira. "Teoria de Ramsey para circuitos e caminhos." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/45/45134/tde-11062007-012359/.

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Os principais objetos de estudo neste trabalho são os números de Ramsey para circuitos e o lema da regularidade de Szemerédi. Dados grafos $L_1, \\ldots, L_k$, o número de Ramsey $R(L_1,\\ldots,L_k)$ é o menor inteiro $N$ tal que, para qualquer coloração com $k$ cores das arestas do grafo completo com $N$ vértices, existe uma cor $i$ para a qual a classe de cor correspondente contém $L_i$ como um subgrafo. Estaremos especialmente interessados no caso em que os grafos $L_i$ são circuitos. Obtemos um resultado original solucionando o caso em que $k=3$ e $L_i$ são circuitos pares de mesmo tamanho.
The main objects of interest in this work are the Ramsey numbers for cycles and the Szemerédi regularity lemma. For graphs $L_1, \\ldots, L_k$, the Ramsey number $R(L_1, \\ldots,L_k)$ is the minimum integer $N$ such that for any edge-coloring of the complete graph with~$N$ vertices by $k$ colors there exists a color $i$ for which the corresponding color class contains~$L_i$ as a subgraph. We are specially interested in the case where the graphs $L_i$ are cycles. We obtained an original result solving the case where $k=3$ and $L_i$ are even cycles of the same length.

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Costa, Eduardo Lamas da. "Preços de Ramsey e universalização em telecomunicações." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/12/12138/tde-22092004-190402/.

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Serviços de telecomunicações são importantes não apenas pela sua característica de setor de infra-estrutura mas também pelo seus potenciais efeitos de spill over. A universalização dos serviços de telecomunicações tem sido uma parte importante da intervenção regulatória. As justificativas podem ser econômicas: externalidades de rede, ou não econômicas: cidadania e coesão social. Das várias possibilidades alternativas de políticas, apresenta-se a implementação dos preços de Ramsey, através de markup, como um meio de minimizar as perdas de eficiência econômica na consecução ao deste objetivo, a partir de diferentes cenários de estruturas de mercado e valores de parâmetros.
Telecommunications services are relevant, not only due to its infra-structure service characteristic, but also for their spill over potential effects. Telecommunication suniversal service has been a relevant piece of the regulatory process. Economic reasons might be network externalities; whilst non-economic, citizenship and social cohesion. Among the alternative policy possibilities, it is suggested the implementa-tion of Ramsey pricing, through markup, as a mean to minimize the loss of economic efficiency in reaching this purpose, from different market structures scenarios and parameters values.

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PEAN, CEDRIC. "Theorie de ramsey et ideaux sur p()." Caen, 1998. http://www.theses.fr/1998CAEN2019.

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La theorie de ramsey est une branche de la combinatoire qui s'interesse aux problemes du type suivant : etant donne une structure particuliere que l'on partitionne en un nombre fini de classes, on cherche les sous-structures qui restent intactes dans au moins l'une des classes de la partition. Le resultat principal de cette theorie est le celebre theoreme de ramsey qui etablit que pour tout coloriage des paires d'entiers en un nombre fini de couleurs, il existe un ensemble infini d'entiers a tel que toutes les paires d'elements de a ont la meme couleur. Nous nous interessons a la generalisation suivante du theoreme de ramsey. Soient un cardinal regulier et un cardinal. On designe par p#() l'ensemble des parties de de cardinalite strictement inferieure a. Etant donne h p#(), on note h#2 l'ensemble des couples (a,b) d'elements de h tels que a b. Un ensemble h p#() est dit non borne ou cofinale si pour tout x , p#(), il existe un y , h tel que x y. La question est alors de savoir si pour tout coloriage de p#()#2 en un nombre fini de couleurs, il existe un ensemble non borne h tel que tous les elements de h#2 ont la meme couleur. Une approche encore plus generale consiste a considerer un ideal quelconque j sur p#() et a etudier la propriete de partition qui affirme que pour chaque a , j#+ et chaque coloriage de a#2 en un nombre fini de couleurs, il existe une partie b , j#+ p(a) telle que tous les elements de b#2 ont la meme couleur. Dans cette these, nous etudions les proprietes combinatoires des ideaux sur p#() liees a la propriete de partition.

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Sykes, Harrison G. "COLD FLOW PERFORMANCE OF A RAMJET ENGINE." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1334.

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The design process and construction of the initial modular ramjet attachment to the Cal Poly supersonic wind tunnel is presented. The design of a modular inlet, combustor, and nozzle are studied in depth with the intentions of testing in the modular ramjet. The eﬀorts undertaken to characterize the Cal Poly supersonic wind tunnel and the individual component testing of this attachment are also discussed. The data gathered will be used as a base model for future expansion of the ramjet facility and eventual hot ﬁre testing of the initial components. Modularity of the inlet, combustion chamber, and nozzle will allow for easier modiﬁcation of the initial design and the designs ability to incorporate clear walls will allow for ﬂow and combustion visualization once the performance of the hot ﬂow ramjet is determined. The testing of the blank ramjet duct resulted in an error of less than 10% from predicted results. The duct was also tested with the modular inlet installed and resulted in between a 13-30% error based on the predicted results. Hot ﬂow characteristics of the ramjet were not achieved, and the ﬁnal cold ﬂow test with the nozzle installed was a failure due to improper conﬁguration of the nozzle. The errors associated with this testing can largely be placed on the poor performance of the Cal Poly supersonic wind tunnel and the alterations made to the testing in an attempt to accommodate these ﬂaws. The ﬁnal tests were halted for safety concerns and could continue after a thorough safety review.

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Dickson, James Odziemiec. "An Introduction to Ramsey Theory on Graphs." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/32873.

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Lavrov, Mikhail. "Results in Ramsey Theory and Probabilistic Combinatorics." Research Showcase @ CMU, 2017. http://repository.cmu.edu/dissertations/957.

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This thesis addresses several questions in Ramsey theory and in probabilistic combinatorics. We begin by considering several questions related to the Hales–Jewett Theorem, a central result in the study of Ramsey theory. We use bounds due to Shelah [46] to attack a geometric Ramsey problem due to Graham and Rothschild [28], improving on the the previous bound known as Graham’s number (which at one point held the Guinness world record for the largest number used in a mathematical proof). Extending ideas developed in studying that question, we obtain a bound of less than1011 on the Hales–Jewett number HJ(4; 2). Next, we consider problems in random graphs, and especially the use of random structures in solving extremal problems. We begin by a classical random graph result, analyzing an invariant called the game chromatic number for the random 3-regular graph Gn,3. Then, we extend the increasing paths problem posed by Graham and Kleitman [27] to the random setting. Finally, we consider a purely graphtheoretic problem, that of distance-uniform graphs, introduced by Alon et al. in [2]. Here, we prove a marked difference between the behavior of random graphs which are distance-uniform, and worst-case behavior of distance-uniform graphs, constructing a family of distance-uniform graphs which are separated by an exponential gap from the random example.

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Stinehour, Joshua. "R(W₅, K₅)=27 /." Online version of thesis, 2004. https://ritdml.rit.edu/dspace/handle/1850/2759.

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Sanhueza, Matamala Nicolás Ignacio. "Estructura y números de Ramsey para ciclos versus ruedas de tamaño impar." Tesis, Universidad de Chile, 2014. http://www.repositorio.uchile.cl/handle/2250/117105.

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Ingeniero Civil Matemático
Se estudia la estructura de grafos completos de tamaño apropiado, con una coloreación de sus aristas en dos colores, de manera tal que no presentan como subgrafos monocromáticos a ciertos tipos de grafos específicos. En este caso se considera el caso de un ciclo impar C_n con n vértices y una rueda W_n := K_1 + C_n con n+1 vértices; en el caso en que n es impar. Se muestra que para n impar y todo grafo completo de tamaño apropiado, con una coloreación de sus aristas en azul y rojo que no contenga como subgrafo monocromático rojo a C_n ni como subgrafo monocromático azul a W_n; eliminando a lo más dos vértices se obtiene una partición de sus vértices en tres conjuntos que inducen grafos completos de color rojo, y aristas formando un grafo tripartito completo. Dicho resultado se puede ver como una generalización de resultados presentados por Nikiforov y Schelp; y como una suerte de recíproca a cotas conocidas para números de Ramsey asimétricos. Como resultado secundario de la demostración se obtienen dos cotas para el número de Ramsey de r(C_{2k+1}, W_{2k+2}): una es más fina para valores pequeños de k y la otra es mejor en el caso asintótico. Los valores exactos de dichos números de Ramsey son, en este instante, un problema abierto. Las cotas expresadas son una aproximación a los valores que han sido conjeturados y permiten ver que, al menos a un nivel asintótico, dichos resultados son ciertos.

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Balland, François-Joël. "La vie et l'oeuvre de Dominique Vincent Ramel, ministre des Finances du Directoire." Paris 4, 2002. http://www.theses.fr/2002PA040139.

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Dominique Vincent Ramel est né en 1760 près de Carcassonne, et décédé en 1829 à Bruxelles. Elu à la Constituante, à la Convention, puis aux Cinq Cents, il fut ministre des Finances du 14 février 1796 au 20 juillet 1799 sous le Directoire. Malgré cette longévité ministérielle importante, Ramel est un personnage très peu connu de l'Histoire de France. Cette thèse vise à faire connaître Ramel, non dans un souci de réhabilitation, l'Histoire n'est pas un tribunal, mais pour remettre à la place qu'il mérite un des hommes les plus importants de la Révolution par le rôle primordial qu'il joua dans la gestion des Finances. Nous avons étudié l'action politique de Ramel avant d'être nommé ministre ; ensuite l'organisation centrale des Finances publiques ; ensuite les principaux domaines d'action du ministre Ramel, en détaillant les principales réformes qu'il accomplit ou seulement entreprit ; ensuite la grande affaire du ministère Ramel, la vente des biens nationaux en Belgique ; ensuite Ramel après le ministre, pour analyser des ouvrages de Finances rédigés par Ramel, étudier le passage de Ramel à la préfecture du Calvados, en 1815, et décrire l'exil de Ramel en Belgique ; enfin la famille de Ramel
Dominique Vincent Ramel is born in 1760 near by Carcassonne, and he died in 1829 in Bruxelles. Elected in the Constituante, in the Convention, and in the Cinq Cents, he was minister of Finances from 2-14-1796 to 7-20-1799 during the Directoire. In spite of this important ministerial longevity, Ramel is a very little-known personage of History of France. This thesis aims to do known Ramel, not to rehabilitate him, History in not a tribunal, but to put again in the place that he merits one of the most important men of the Revolution : he played a primordial part in the administration of Finance. We studied Ramel's political action before to be appointed minister ; then the central organisation of Finance ; then the principal fields of action of the minister Ramel, detailing the principal reforms he achieved or only began ; then the great matter of Ramel's ministry, the sale of the national goods in Belgium ; then Ramel after to be minister, to analyse books of Finance written by Ramel, to study Ramel's action in Calvados prefecture, in 1815, and to describe Ramel's exile in Belgium ; lastly Ramel's family

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Mißbach, Tobias [Verfasser], Stefan [Akademischer Betreuer] Rammelt, and Thomas [Akademischer Betreuer] Mittlmeier. "Klinische und funktionelle Ergebnisse nach Chopart-Luxationsfrakturen : Eine retrospektive Untersuchung / Tobias Mißbach. Betreuer: Stefan Rammelt. Gutachter: Stefan Rammelt ; Thomas Mittlmeier." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://d-nb.info/1079468102/34.

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Djang, Claire. "Two-Coloring Cycles In Complete Graphs." Oberlin College Honors Theses / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=oberlin1370618319.

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Liebenau, Anita [Verfasser]. "Orientation Games and Minimal Ramsey Graphs / Anita Liebenau." Berlin : Freie Universität Berlin, 2014. http://d-nb.info/1058360922/34.

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Dissertations / Theses on the topic 'RAMTEL'

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