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Dissertations / Theses on the topic 'Ring'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Sutton, Phil J. "Saturn's turbulent F ring." Thesis, Loughborough University, 2015. https://dspace.lboro.ac.uk/2134/18475.

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As our abilities to utilise high performance computing to theoretically probe many astrophysical systems increases, a genuine need to relate to real systems becomes ever more important. Here, Saturn s rings can be used as a nearby laboratory to investigate in real time many astrophysical processes. One such system is the narrow F ring and its interaction with its inner shepherd moon Prometheus. Through numerical modelling and direct observations of the in-situ spacecraft Cassini we find new and exciting dynamics. These might help explain some of the asymmetries witnessed in the distribution of

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2

Vosswinkel, Michael. "Ring expansion and ring opening of heteroaromatic nitrenes." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=968868576.

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3

Gattrell, William Thomas. "Aziridines : stereocontrol of ring-making and ring-breaking." Thesis, University of Leicester, 1997. http://hdl.handle.net/2381/30090.

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(S)-3-Amino-2-(1-hydroxy-2,2-dimethylprop-1-yl)-quinazolin-4(3H)-one (Q*NH2) was prepared from (L)-tert-leucine and its 3-acetoxyamino derivative (Q*NHOAc) used to aziridinate a range of alkenes. In the presence of titanium (IV) tert-butoxide, Q*NHOAc was found to convert styrene, indene, butadiene and tert-butyl acrylate with complete diastereoselectivity into the corresponding N-Q* substituted aziridines in good yield; aziridination of methyl acrylate and -methylstyrene was also highly diastereoselective. In the absence of titanium (IV) tert-butoxide, aziridination proceeded with poor diaste

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4

Coe, Samuel. "Phyllostictine A ring assembly via ring closing metathesis." Thesis, University of Warwick, 2014. http://wrap.warwick.ac.uk/67101/.

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This thesis describes work focused on the chemical synthesis and herbicidal activity of the natural product phyllostictine A, a molecule of unique structure and unknown mode of action. Chapter 1 serves to introduce the natural product and describe the known activity of the natural product. Furthermore, it discusses literature methods for the construction of a-methylene-b-lactams, a key component of phyllostictine A. Chapter 2 describes work towards the construction of the macrocyclic rings found in phyllostictine A. As a result a-methylene-b-lactams have been shown, for the first time, to part

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5

EPLEE, ROBERT EUGENE JR. "SPOKES IN SATURN'S B RING: DYNAMICAL AND PHYSICAL PROPERTIES DEDUCED FROM VOYAGER SATURN RING IMAGES." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184056.

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The two Voyager spacecraft discovered small-scale, radially-extended features in the central region of Saturn's B Ring. These "spokes" are "clouds" of submicron-size ice grains which are electrostatically levitated above the ring plane and which appear to travel about Saturn in Keplerian orbits (Smith et al., 1981, Science 212, 163-191). This research project is a study of the dynamical and physical properties of spokes as deduced from Voyager Saturn ring images. An analysis of the orbital motion of two dynamically-anomalous spokes, in particular, has set limits on the charge-to-mass ratios of

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6

Hadziselimovic, Adin. "Ring Simulator." Thesis, Linköping University, Department of Electrical Engineering, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1098.

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<p>This report is about a Thesis for Degree of Bachelor of Science at Linköping University. It describes design of equipment which makes it possible to measure signal and noise quality during data transmission via Asymmetric Digital Subscriber Line, ADSL. The measuring instrument is HP 4934A Transmission Impairment Measuring Set. The equipment was supposed to be used for testing of ADSL systems within Solectron Sweden AB. In fact, the equipment stands for virtual Plain Old Telephone Service, POTS. That is why it simulates all three states that may come up. The states are following:"on hook", r

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7

Маlenchyk, Т. V., and А. V. Bulashenko. "Ring Counters." Thesis, Sumy State University, 2018. http://essuir.sumdu.edu.ua/handle/123456789/67632.

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For the construction of ring counters, all types of shift registers can be used. The most simple is a ring counter on D flip-flops. In the circuit, four flip-flops are closed in the ring by feedback from the output of the last flip-flop to the input of the first flip-flop. Counting pulses are fed to the clock inputs of all triggers. On this basis, all ring counters are synchronous. By the pulse of the initial setting, the first trigger is set to, the rest to.

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8

Thießen, Friedrich, and Sebastian Liebold. "Der Ring." Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-133479.

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9

Prothero, John. "Ring Width and Ring Diameter as Functions of Ring Number in Suppressed Maples and Oaks." Tree-Ring Society, 1997. http://hdl.handle.net/10150/262379.

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Phipps showed that the cross-sectional area of successive tree rings in suppressed red maples and chestnut oaks, sampled at three-foot intervals above the base, is approximately constant. I show that this invariance in cross-sectional area is consistent with ring width varying as the inverse square root of ring number and with mean ring diameter and trunk diameter each scaling as the square root of ring number. These results may be useful in formulating growth rules for tree trunks of selected species, under constant environmental conditions, in terms of a single independent variable. For exam

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10

Riat, D. P. S. "The ring opening polymerization of ring strained cyclic ethers." Thesis, Aston University, 1992. http://publications.aston.ac.uk/9785/.

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The kinetics and mechanisms of the ring-opening polymerization of oxetane were studied using cationic and coordinated anionic catalysts. The cationic initiators used were BF30Et2!/ethanol, BF30Et2!/ethanediol and BF30Et2/propantriol. Kinetic determinations with the BF30Et2/diol system indicated that a 1: 1 BF3:0H ratio gave the maximum rate of polymerization and this ratio was employed to detenmne the overall rates of polymerization. An overall second-order dependence was obtained when the system involved ethanediol or propantriol as co-catalyst and a 3/2-order dependence with ethanol, in each

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11

Sutradhar, Nitai Chandra. "The study of ring-spinning with particular reference to rotating rings." Thesis, University of Leeds, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329210.

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12

Steele, Brett. "Romancing the Ring : romance tropes in The Lord of the Rings." Diss., University of Pretoria, 2015. http://hdl.handle.net/2263/53471.

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This dissertation is an exploration of the Romance tropes that exist in J.R.R. Tolkien s The Lord of the Rings. It concentrates on the numerous Romance tropes and details evident in Tolkien s characters and setting while focusing on how these tropes function within the greater Romance genre. Examples from various other Romances are used to augment the argument, but particular mention is made of the Romances or pieces of literature that Tolkien translated and worked on in his lifetime, including: Sir Gawain and the Green Knight, Sir Orfeo, The Pearl, The Legend of Sigurd and Gudrún, The F

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13

Brennan, C. M. "Ring closure reactions." Thesis, University of East Anglia, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384611.

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14

McDonnell, P. D. "Ring closure reactions." Thesis, University of East Anglia, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378891.

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15

Reich, Eitan. "Deniable Ring Signatures." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/41671.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.<br>Includes bibliographical references (p. 55-57).<br>Ring Signatures were developed by Rivest, Shamir and Tauman, in a paper titled How to Leak a Secret, as a cryptographically secure way to authenticate messages with respect to ad-hoc groups while still maintaining the signer's anonymity. While their initial scheme assumed the existence of random oracles, in 2005 a scheme was developed that does not use random oracles and meets the strongest security definitions known in the l

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16

Angeltveit, Vigleik. "Noncommutative ring spectra." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/34549.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 2006.<br>Includes bibliographical references (p. 87-91).<br>Let A be an Ax ring spectrum. We give an explicit construction of topological Hochschild homology and cohomology of A using the Stasheff associahedra and another family of polyhedra called cyclohedra. Using this construction we can then study how THH(A) varies over the moduli space of AO structures on A, a problem which seems largely intractable using strictly associative replacements of A. We study how topological Hochschild cohomology of any 2-periodic Mor

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17

Gallant, Pascal. "Synthesis of oxepane nucleosides by ring expansion and ring closing routes." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=103473.

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Modified nucleosides form an important class of antiviral and anticancer agents, and nucleic acids bearing modified nucleosides hold great promise as therapeutic agents. Oxepane nucleosides and nucleic acids are members of this important class of compounds. Oxepane nucleosides have a seven-membered carbohydrate ring instead of the canonical five-membered pentafuranose ring. This thesis describes work in the development of new synthetic approaches and routes in the synthesis of oxepane nucleosides. In chapter 2, the synthesis of oxepane nucleosides based on the ring expansion approach is descri

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18

Hill, Jessica. "Medium ring nitrogen heterocycles by migratory ring expansion of metallated ureas." Thesis, University of Bristol, 2019. http://hdl.handle.net/1983/d76ea2f2-2d4a-40d9-9d50-04fde02d65c1.

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Medium ring (8-12 members) and benzannulated medium heterocycles represent a class of synthetically challenging targets. Although natural products containing medium ring N- and O- heterocycles offer beneficial biological properties, there is a stark absence of medium rings in active pharmaceutical ingredients, potentially highlighting the difficulties associated with their synthesis. Typical methods of synthesis include transition metal-catalysed processes, such as ring closing metathesis and ring expansion techniques, which require pre-organisation of the precursors to ensure a thermodynamic

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19

Johansson, Pontus. "New piston ring solution for Stirling engines." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-75236.

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20

Lacroix, Jean-François. "Design and synthesis of A-ring/seco B-ring vitamin D analogues." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=106520.

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A new series of vitamin D analogs were synthesized with a saturated seco B-ring and several potential aromatic A-ring mimics. These new A-ring/seco B-ring analogs examine the possibility of forming positive electrostatic interactions in the seco B-ring portion of the vitamin D nuclear receptor, the effect of increasing interactions between the ligand and Tryptophan 286 as well as the ability of aromatic rings at miming the natural A-ring. A central core based on the natural C,D-ring was developed, which allows divergent analogs synthesis for fast screening of side chain and A-ring mimics.<br>U

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21

Immormino, Nicholas A. "Clean Rings & Clean Group Rings." Bowling Green State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1374247918.

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22

Liwag, Andra. "The Seven Day Ring." NSUWorks, 2013. http://nsuworks.nova.edu/writing_etd/8.

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23

O’Flaherty, Craig. "Blue ring of fire." Thesis, Rhodes University, 2018. http://hdl.handle.net/10962/63615.

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My poems are reflections of shape, colour and emotions expressed through imagery. Their unsentimental landscape-realism echo my own feelings as well as broader human dimensions of contradiction and uncertainty, without trying to resolve them. In the same way that photography is the art of 'painting with light', my poems seek a language that evokes light and darkness. They aspire to what Keats said when writing about ‘negative capability’: “Poetical character has no self, it is anything and nothing, it has no character and enjoys light and shade”. My poems explore what I have learned about form

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24

Graham, Richard Douglas. "Ring laser gain media." Thesis, University of Canterbury. Physics, 2006. http://hdl.handle.net/10092/1377.

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This thesis details the design and construction of an experiment to measure the radial distribution of laser gain in a cylindrical Helium-Neon laser gain tube. This distribution is important as it can effect the transverse mode structure of a running ring laser. Earlier theoretical models of the distribution were not supported by high quality experimental data and fail to take into account some physical processes. A resolution of 8 parts per million in gain and 50 μm in radial position has been achieved. Gain distributions have been measured and are shown to be well modeled by a 0th order Bess

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25

Craig, Ian R. "Ring polymer molecular dynamics." Thesis, University of Oxford, 2006. http://ora.ox.ac.uk/objects/uuid:f3c37800-6fc7-4d8b-b135-94d94a7cf4e1.

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This thesis presents the ring polymer molecular dynamics (RPMD) approximation to the Kubo-transformed time correlation function and shows how it may be used as the basis of an approximate quantum-mechanical method for determining the dynamical properties of condensed-phase molecular systems. The performance of the RPMD method is initially investigated by calculating the position (q<sup>ˆ</sup>), and position-cubed (q<sup>ˆ3</sup>), autocorrelation functions of a series of onedimensional potential wells of varying anharmonicity. It is then applied to the evaluation of the incoherent dynamic str

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26

Stones, P. A. "New ring forming reactions." Thesis, University of Southampton, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373984.

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27

Bourne, I. A. "Medium-ring bicyclic amines." Thesis, University of Bristol, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375000.

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28

Xu, Guoda, John M. Bartha, Stuart McNamee, Larry Rheaume, and Allen Khosrowabadi. "OPTICAL SLIP-RING CONNECTOR." International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/607336.

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International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>Current ground-based tracking systems at the DoD test and training ranges require transmission of a variety of signals from rotating platform to fixed control and process center. Implementation of commercial off the shelf (COTS) solution for transmitting high-speed, multiple-channel data signals over a rotational platform prompt the development of an advanced electro-optic hybrid rotating-to-fixed information transmission technology. Based on current demand,

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29

Leal, João Filipe Tapadinhas Puga. "Optimization of ring oscillators." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/11361.

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Dissertação para obtenção do Grau de Mestre em Engenharia Electrotécnica e de Computadores<br>Voltage Controlled Oscillators (VCOs) are from all the building blocks of a PLL, those whose implementation is more critical, since the quality of the signal depends on its performance. The VCOs can be implemented based on LC oscillators or ring oscillators. The ring oscillators, despite of being worst when it comes to manners of phase noise, they are rather used due to lower power consumption, wider tuning range and occupying less area. Despite the fact that VCOs are widely used in last years, thei

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30

Thießen, Friedrich, and Sebastian Liebold. "Der Ring: Jahresausgabe 2013." RCDA Chemnitz e.V, 2013. https://monarch.qucosa.de/id/qucosa%3A20001.

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31

McWhorter, Suzanne D. "Ring Rust." Cleveland State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=csu1430421935.

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32

Andersson, Pelle. "Spektrum av en ring." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297898.

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Denna text fungerar som en egen genomgång av spektra av matematiska ringar, inspirerad av uppgifter från Introduction to Commutative Algebra av Atiyah, MacDonald och The Geometry of Schemes av Harris, Eisenburg. Spektrumet är en struktur ur varje ring där en rings primideal ses som punkter i ett topologiskt rum. Spektrumet har alltså en geometrisk tolkning och topologin kallas Zariskitopologi. I texten presenteras en rad satser utifrån grundläggande ringlära och Zariskitopologin. Det tas upp resultat såsom att öppna mängder i spektrumet nästan alltid är mycket stora i jämförelse med det mesta,

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33

Juglal, Shaanraj. "Prime near-ring modules and their links with the generalised group near-ring." Thesis, Nelson Mandela Metropolitan University, 2007. http://hdl.handle.net/10948/714.

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In view of the facts that the definition of a ring led to the definition of a near- ring, the definition of a ring module led to the definition of a near-ring module, prime rings resulted in investigations with respect to primeness in near-rings, one is naturally inclined to attempt to define the notion of a group near-ring seeing that the group ring had already been defined and investigated into by, interalia, Groenewald in [7] . However, in trying to define the group near-ring along the same lines as the group ring was defined, it was found that the resulting multiplication was, in general,

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34

Chen, Thet-Ngian. "A new fault-tolerant configuration for the Cambridge Ring : the Hierarchical Ring-Star." Thesis, Loughborough University, 1985. https://dspace.lboro.ac.uk/2134/33049.

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The primary objective of this research is to look at ways of resolving the reliability problems of the Cambridge Ring local area network system. The result is a novel design to enhance the Cambridge Ring with fault tolerance by introducing redundant communication paths with dynamic reconfiguration. The proposed Ring-Star system combines the advantages of ring and star networks to create a network which is topologically resilient while retaining the efficient communication advantage of rings.

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35

Guo, Boying. "New Ring Expansion and Ring Opening Reactions of Vinyl Oxetanes and Vinyl Oxiranes." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/315543.

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Three new synthetic methods employing vinyl oxetanes as substrates are presented. In Chapter 2, a new catalytic vinyl oxetane ring expansion is described. Origins, design, reaction, and optimizations are discussed. A novel asymmetric synthesis of 3,6-dihydro-2H-pyrans using chiral counterion catalysis is presented as part of these studies. In Chapter 3, the Z-selective ring opening of vinyl oxetanes using dialkyl dithiophosphate nucleophiles is described from initial discovery, through optimizations to the application towards the synthesis of thiopyrans. These insights were then utilized to de

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36

Borges, Adroaldo Lazouriano Moreira. "Uma proposta de protocolo token ring sem fio." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/45/45134/tde-24032014-121359/.

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O protocolo Token Ring sem o (WTRP) é um protocolo distribuído de controle de acesso ao meio que provê qualidade de serviço em termos de uso de largura de banda e latência limitada. WTRP consiste de nós (estações) que formam topologicamente um anel. Contudo, quando o número de nós em um anel aumenta a latência aumenta e o tempo de reuso de token por parte de um nó em anel também aumenta. Neste trabalho, apresentamos uma versão extendida de WTRP com foco em reduzir a latência, tempo de reuso de token e permitir encaminhamento de dados entre anéis sem aumentar signicativamente o consumo de energ

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37

Esmaili, Mahyar. "Development and implementation of an apparatus for polymeric piston-ring performance tests in controlled environment." Ohio : Ohio University, 1993. http://www.ohiolink.edu/etd/view.cgi?ohiou1175286117.

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38

Phipps, Richard L. "Some Geometric Constraints on Ring-Width Trend." Tree-Ring Society, 2005. http://hdl.handle.net/10150/262639.

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Simulations of tree rings from trees of undisturbed forest sites are used to describe natural, long-term width trends. Ring-width trends of canopy-sized white oak are simulated from regressions of BAI (ring area) data of real trees. Examples are given of a tree from a typical re-growth forest in Illinois and of a more slowly growing tree from an old-growth forest in Kentucky. The long-term width trend was simulated as being toward constant ring width regardless of growth rate of the tree. Conditions by which either increasing or decreasing ring-width trends could be simulated from the same lin

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39

Dincoflaz, Yasemin. "The Synthesis Of 6- And 7- Membered Heterocyclic Ring Systems Fused To Pyridine Ring." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615579/index.pdf.

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The synthesis of the nitrogen containing heterocyclic compounds is one of the leading research areas throughout the organic chemistry due to their significant activities in biological systems. Among the various biologically active molecules, pyridine-fused ring systems are of prime importance on the grounds of their proven clinical roles. The coupling reactions with 6-membered heterocyclic compounds and diazepines gave rise to new pharmalogical compounds in recent years. Therefore, our object was the synthesis of pyridine-fused 6- and 7-membered heterocycles. Starting from bromopyridine, two d

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40

White, John William. "An Evans-Tishchenko/ring closing metathesis approach towards the medium ring lactone, octalactin A." Thesis, University of Edinburgh, 2006. http://hdl.handle.net/1842/11557.

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Medium-ring lactones have become important targets for synthesis as they have been isolated in an increasing number of biologically active natural products. The studies towards two 8-membered ring lactone natural products, octalactins A 1 and B 2, will be described. The first section of this thesis examines the application of key methodology (anti aldol reaction, Homer Wadsworth Emmons olefination, intermolecular Evans- Tishchenko coupling and Ring Closing Metathesis) towards the octalactins via the synthesis of a model lactone 3 (Chapter 2). The second section (Chapter 3) discusses the extens

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41

Akurati, Parthasri, and Karan Kumar. "Development of a 3D Ring Dynamics Model For a Heavy-Duty Piston Ring-Pack." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-21638.

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With the increasing restrictions in emission legislations, the automotive industry aims to improve the efficiency of the lubricating system and to decrease fuel consumption. In the power cylinder unit (PCU), the piston rings are the major contributor to these consumptions. Hence, focus on the dynamic behaviour of the rings to reduce lube oil consumption (LOC) becomes a key factor in thriving towards sustainability. Several studies have been conducted on the piston ring-pack specifically using a 2D ring dynamics approach. This study focuses on developing a 3D ring dynamics model, in the softwar

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42

Engel, David B. "Syntheses and comparative studies of 5-membered ring and 6-membered ring sulfane frameworks /." Online version of thesis, 1992. http://hdl.handle.net/1850/11985.

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43

Chin, Melanie Soo, and m. chin@cqu edu au. "Towards a Reinterpretation of the Radical Theory of Associative Rings Using Base Radical and Base Semisimple Class Constructions." Central Queensland University. Computer Science, 2004. http://library-resources.cqu.edu.au./thesis/adt-QCQU/public/adt-QCQU20050411.102928.

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This research aims to refresh and reinterpret the radical theory of associative rings using the base radical and base semisimple class constructions. It also endeavours to generalise some results about ideals of rings in terms of accessible subrings. A characterisation of accessible subrings is included. By applying the base radical and base semisimple class constructions to many of the known results in established radical theory a number of gaps are uncovered and closed, with the goal of making the theory more accessible to advanced undergraduate and graduate students and mathematicians in

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44

Vaughan, Stephen N. (Stephen Nick). "Some Properties of Noetherian Rings." Thesis, North Texas State University, 1986. https://digital.library.unt.edu/ark:/67531/metadc501109/.

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This paper is an investigation of several basic properties of noetherian rings. Chapter I gives a brief introduction, statements of definitions, and statements of theorems without proof. Some of the main results in the study of noetherian rings are proved in Chapter II. These results include proofs of the equivalence of the maximal condition, the ascending chain condition, and that every ideal is finitely generated. Some other results are that if a ring R is noetherian, then R[x] is noetherian, and that if every prime ideal of a ring R is finitely generated, then R is noetherian.

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Farina, John Dominic. "Stability properties in ring theory." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3237384.

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Thesis (Ph. D.)--University of California, San Diego, 2006.<br>Title from first page of PDF file (viewed December 8, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 86-90).

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Bjermo, Jonas. "The ring of entire functions." Thesis, Uppsala University, Department of Mathematics, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-121405.

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47

Alnæs, Merethe. "Integritetsevaluering av Ring Joint flensforbindelse." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for produksjons- og kvalitetsteknikk, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-22694.

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Med stadig høyere krav til redusert utslipp i olje- og gassindustrien er flensforbindelser en viktig komponent å sette fokus på. Flensforbindelser er blant annet brukt i subsea omgivelser til å skjøte sammen rørsystemer og komponenter. Ettersom forbindelsene eksisterer i et stort antall, og transporterer hydrokarboner under høye trykk og temperaturer er det viktig at integriteten er i behold. Standarden ASTM A182/A182M setter krav til at stålflenser skal være smidd så nært som praktisk mulig til angitt størrelse og form. Kravet elimi

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48

Mastine, Michael. "Atmospheric optical ring network protocols." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=68044.

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The protocols used for an Atmospheric Optical Ring Network (AORN) are investigated. Performance under bad-weather conditions are of particular interest. Under these bad-weather conditions, the Gilbert-Elliott model is the fading channel model used in the simulation of the network. Appropriate channel parameters are obtained and then protocol modifications are tested. Performance plots are obtained showing the effects on performance of lowering the token timeout value and the addition of additional parity bits in the datalink layer of the network. Furthermore, the performance is plotted as func

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49

Bradley, Lisa L. "Studies in medium ring synthesis." Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.276522.

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Singh, Rajinder. "Free radical ring expansion reactions." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293427.

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