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Dissertations / Theses on the topic 'Clearances'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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1

Gonsalves, Diane Helen. "Chaos concepts in mechanical systems with clearances." Thesis, University of Aberdeen, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387216.

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This thesis considers the use of chaos concepts in investigating the dynamics of two discontinuously nonlinear mechanical systems having two degrees of freedom. The nonlinearity considered is in the form of a discontinuous stiffness effect, and can cause the systems to exhibit chaotic motion. The first system is a rotor system with a bearing clearance effect. The second is a nonlinear vibration absorber, comprising a conventional linear absorber and a linear snubber stiffness, which the auxiliary mass intermittently contacts. Numerical integration is used in solving the equations of motion for

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2

Padmanabhan, Chandramouli. "Analysis of periodically excited systems with clearances /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu148785987994039.

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3

Johnson, David M. "Simulation of clearances between trains and the infrastructure." Thesis, Imperial College London, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.445170.

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Trains need to be bigger and faster, which places strains on the interface between them and the infrastructure. This thesis examines the nature of one of these interfaces, namely clearance or gauging. There is little published work on the management of clearances beyond regulatory documents. This thesis considered many aspects of the engineering of clearance to develop a mathematic simulation of the gap between moving trains and the infrastructure. It proposes the concept of replacing gauge clearance with a comparison between measured infrastructure and dynamic simulations of trains. The thesi

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4

Gourievidis, Laurence. "The image of the Highland Clearances, c. 1880-1990." Thesis, University of St Andrews, 1994. http://hdl.handle.net/10023/2898.

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The Highland Clearances have featured in many historical analyses over the past thirty years and have particularly attracted the attention of socio-economic historians interested in the study of agricultural changes, their causes and multi-faceted impact on the Highland region and society. Yet it seems that the increasingly refined knowledge that the period now enjoys has hardly percolated down to the popular interpretation given of the events. The present study concerns itself with the popular representations of the Highland Clearances which, to a large extent, are consensual and are revealin

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5

Deck, Joseph Francis. "The dynamics of spatial elastic mechanisms with clearances and support structures." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/12618.

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6

Davies, Christopher Michael. "Study on the dynamic response of a printed circuit board focusing on constraint clearances." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1213368683.

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7

Glauner, Andreas. "Cimetidin-modifizierte Kreatinin-Clearances als Basis einer pharmakokinetisch gesteuerten individualisierten Dosierung des Zytostatikums Carboplatin." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=970312954.

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8

Traynor, Jamie. "Assessment of small solute clearances in chronic kidney disease before and after starting dialysis." Thesis, University of Aberdeen, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.430974.

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The primary aim of this thesis was to evaluate and improve upon the methods of estimating and measuring small solute clearances in chronic kidney disease. The first part of this thesis addresses the difficult issue of when dialysis should be started in end stage renal disease. Survival of patients after starting dialysis was assessed retrospectively and no benefit was observed in starting dialysis at a higher level of renal function when patient survival was expressed without the effect of lead-time bias. The relationship between residual renal function, reported uraemic symptoms and the deci

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9

Yildirim, Murat. "Design And Construction Of An Experimental Apparatus For The Interferometric Measurement Of Micrometer Level Clearances." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610704/index.pdf.

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In this study a fiber optic interferometer (FOI) was designed and constructed to measure micron level clearances occurring in piston cylinder arrangements. A Cartesian model of the piston cylinder assembly is manufactured and lateral motion and vertical displacement are generated via a step motor, and micrometers, respectively. Clearance measurements are conducted in air and also in a lubricant. The range of vertical displacements is kept between 0-50 &amp<br>#956<br>m, and the lateral motion is 13.5 mm. The effect of the step motor and lateral motion carriage on distance measurement is determ

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10

Matheny, Paul D. "Resource consequences of altering the delinquent debt threshold used in background investigations for security clearances." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA277208.

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11

Biswas, Arunava. "Optimal allocation of tolerances and clearances in complex assemblies to minimize the cost of manufacturing /." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487947908403013.

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12

Rinaldi, Decio de Moura. "Caracterização mecânica de um robô manipulador paralelo de 3 graus de liberdade." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3151/tde-27082018-140018/.

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Esta dissertação aborda a caracterização mecânica de um robô manipulador paralelo de 3 graus de liberdade. A topologia do manipulador corresponde a um mecanismo de estrutura cinemática paralela, cujo efetuador é capaz de realizar 3 deslocamentos lineares no espaço tridimensional. A tecnologia associada ao controle de robôs de estrutura cinemática serial encontra-se bastante madura. No entanto, o mesmo não se dá nos robôs paralelos. Para que se avance no domínio do controle de trajetória destes robôs é necessária a sua caracterização mecânica, a qual fornecerá os subsídios para identificação pa

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13

Keller, Birgit [Verfasser], Udo [Gutachter] Buscher, Rainer [Gutachter] Lasch, and Udo [Akademischer Betreuer] Buscher. "The single row layout problem with clearances / Birgit Keller ; Gutachter: Udo Buscher, Rainer Lasch ; Betreuer: Udo Buscher." Dresden : Technische Universität Dresden, 2019. http://d-nb.info/1226901247/34.

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14

Kiss, Steven Brent. "The Effectiveness of Pilot Response to Generate Concatenated Downlink Messages after Evaluation of Hybrid Graphic-Text Clearances." Wright State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=wright1369499745.

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15

Fenyo, Krisztina. "Contempt, sympathy and romance : lowland perceptions of the Highlands and the clearances during the famine years, 1845-1855." Thesis, University of Glasgow, 1996. http://theses.gla.ac.uk/842/.

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This thesis examines Lowland public opinion towards the Highlanders in mid-nineteenth century Scotland. It explores attitudes present in the contemporary newspaper press, and shows that public opinion was divided by three basic perceptions: 'contempt', 'sympathy' and 'romance'. An analysis of the main newspaper files demonstrates that during the Famine years up to the Crimean War, the most prevalent perception was that of contempt, regarding the Gaels as an 'inferior' and often 'useless' race. The study also describes the battle which sympathetic journalists fought against this majority percep

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16

Fenyô, Krisztina. "'Contempt, sympathy and romance' lowland perceptions of the Highlands and the clearances during the Famine years, 1845-1855 /." Connect to e-thesis, 1996. http://theses.gla.ac.uk/842/.

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Thesis (Ph.D.) - University of Glasgow, 1996.<br>Ph.D. thesis submitted to the Faculty of Arts, Department of History, University of Glasgow, 1996. Includes bibliographical references. Print version also available.

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17

Samaniego, Rebekah. "When Race Matters: The Influence of Race on Case Clearances in Capital vs. Non-Capital Homicides in Texas." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1062846/.

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Texas leads the nation in the number of executions carried out since capital punishment was reinstated in 1976. Race was a key factor in the 1972 moratorium, and though the Supreme Court allowed for its return under new statutes, race continues to plague the capital punishment legal system. In this study, I examine the influence of race on case clearances in capital and non-capital homicides in Texas, using the extra-legal and non-discretionary theories from existing clearance literature. I find that race influences the probability of cases being cleared in non-capital cases but has no statist

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18

Hill, Henry J. "Impact of altering the delinquent debt threshold used for background investigation expansion of the denial rate of security clearances." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/28269.

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The purpose of this thesis was to conduct an analysis of cases of requests for Top Secret security clearances from applicants whose backgrounds showed some derogatory financial information, to determine the impact of the delinquent debt threshold used to expand personnel security investigations on final clearance decisions. To conduct the analysis, a sample of completed cases meeting the Defense Investigative Service's (DIS) delinquent debt criteria for investigation expansion ($500 or more outstanding for 120 days) was selected. The total amount of delinquent debt for each case was recorded a

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19

Oruganti, Pradeep Sharma. "Step Responses of a Torsional System with Multiple Clearances: Study of Vibro-Impact Phenomenon using Experimental and Computational Methods." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1483033067455173.

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20

Deniz, Ibrahim. "Insulation Coordination In The Turkish E.h.v. Transmission System." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12612878/index.pdf.

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This thesis reviews the line insulation coordination practices of Turkish Electricity Transmission Company with special focus on E.H.V. transmission line towers&rsquo<br>top geometry and ground clearances. In respect of this, the national regulation, &ldquo<br>Elektrik Kuvvetli Akim Tesisleri Y&ouml<br>netmeligi&rdquo<br>, is critically evaluated.The national regulation lags behind the modern world practice and the provisions of the regulation lead to uneconomical designs. The possible benefits of the modern practices are shown by application examples.

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21

Zhang, Lei. "Electrical tracking over solid insulating materials for aerospace applications." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/electrical-tracking-over-solid-insulating-materials-for-aerospace-applications(94086fc5-0ca2-4d12-aa6d-97452d3169d1).html.

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The concept of More Electric Aircraft, where is to utilize the electrical power to drive more or all aircraft subsystem instead of conventional combination of pneumatic, hydraulic, mechanical and electrical power, can be recalled to World War II. It has been proven to have more advantages for decades in terms of energy efficiency, environmental issues, logistics and operational maintenance. It can also enhance aircraft weight, volume and battle damage reconfigurability.Thanks to the new electronics technologies and the emergence of new materials, It becomes feasible for high power density elec

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22

Wade, Jonathan Leigh. "Test versus predictions for rotordynamic coefficients and leakage rates of hole-pattern gas seals at two clearances in choked and unchoked conditions." Thesis, Texas A&M University, 2004. http://hdl.handle.net/1969.1/424.

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This thesis documents the results of high pressure testing of hole-pattern annular gas seals conducted at the Texas A&M University's Turbomachinery Laboratory. The testing conditions were aimed at determining the test seals sensitivity to pressure ratio, inlet fluid preswirl, rotor speed, and rotor to seal clearance. The rotordynamic coefficients showed only small changes resulting from the different pressure ratios tested. Only the damping terms at the lower frequencies showed some influence. One other notable result from the testing of different pressure ratios is that the seals were tested

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23

Ebest, Mario [Verfasser]. "Die Vertreibung der subalternen Hochländer im Rahmen der Highland Clearances : Eine Untersuchung der integrativen Verarbeitung des traumatischen Bruchlinienkonfliktes in vier schottischen Romanen / Mario Ebest." Baden-Baden : Nomos Verlagsgesellschaft mbH & Co. KG, 2016. http://d-nb.info/1106337697/34.

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24

Ehmaida, Mutyaa M. "Friction and lubrication behaviour of hip resurfacing metal-on-metal and ZTA ceramic on CFR peek implants with various diameters and clearances : friction and lubrication behaviour of hip resurfacing Co-Cr-Mo and zirconia toughened alumina ceramic heads against carbon fibre reinforced poly-ether-ether-ketone cups with various diameters and clearances have been investigated using serum-based lubricants." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5665.

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Total hip joint prostheses made of CoCrMo heads versus ultra high molecular weight polyethylene (UHMWPE) cups have a limited lifetime, mainly due to the wear of the UHMWPE cups as a result of high friction between the articulating surfaces leading to osteolysis and implant loosening with revision surgery becoming inevitable in more active patients. Tribology plays an important role in developing the design, minimizing wear and reducing friction of hip joint prostheses in order to improve their long-term performance, with good lubricating properties. Metal-on-metal hip resurfacing prostheses ha

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25

Said, Assma Musbah. "Friction and lubrication behaviour of metal-on-metal and ZTA ceramic-on-CFR PEEK hip prostheses : friction and lubrication behaviour of metal-on-metal hip resurfacing and ZTA ceramic heads versus CFR PEEK cups with various diameters and clearances using serum-based lubricants with various viscosities." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/6339.

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The natural hip joint in healthy people has a very low friction with very little (or no) wear. It works as a dynamically loaded bearing and is subjected to about 1-2 million cycles of loading per year. The applied load is the body weight which is tripled when walking and even higher during other activities such as running and jumping. Unfortunately these joints are not always healthy due to various causes such as fractures or disease leading to severe pain which necessitates joint replacement. Currently, the orthopaedic industries are working towards developing an ideal artificial hip joint wi

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26

Leite, Luciane Andréia Ribeiro. "A trajetória dos alunos ingressantes na turma Alfa." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/117819.

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A presente dissertação tem como objetivo analisar as permanências e os afastamentos de alunos do Colégio de Aplicação da UFRGS, da turma Alfa - 1/2001, ao longo de sua trajetória escolar entre o Ensino Fundamental e Ensino Médio. Observou-se que um número significativo de alunos dessa turma se transferiu da escola sendo que os motivos que provocaram essas transferências foram reprovação, falta de adaptação à escola e os turnos dobrados. Em consonância com as teorizações dos Estudos Culturais, de inspiração pós-estruturalista, entendo que as permanências ou os afastamentos de alunos não se trat

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27

Islam, Nazrul. "Clearance, reinfection and re-clearance of hepatitis C." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/61077.

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Purpose: Despite the availability of effective treatments for Hepatitis C virus (HCV) infection, public health experts face challenges to intervening effectively, in part due to gaps in understanding the natural history of HCV. To address these knowledge gaps, the current dissertation uses a large population-based cohort in British Columbia (BC), Canada, to examine spontaneous clearance, reinfection, and spontaneous clearance of reinfection (i.e., re-clearance) of HCV. Methods: This study draws data from the BC Hepatitis Testers Cohort that includes all individuals tested for HCV in BC (1990-

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28

Yu, Wai-kwong, and 余偉光. "Squatter clearance." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B42574961.

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29

Yu, Wai-kwong. "Squatter clearance." Click to view the E-thesis via HKUTO, 1999. http://sunzi.lib.hku.hk/hkuto/record/B42574961.

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30

Hamache, Violette. "Dynamic Ground Clearance." Thesis, Linköpings universitet, Mekanik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-93685.

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The purpose of this work is to develop a test method which will consider the variation of the ground clearance when driving, the so-called dynamic ground clearance. This has been done through the analysis of a specific application: the tractors in grain used in Brazil. Series of real life tests are run in order to obtain data on the tire compressions and the suspension travels. The tractor used is a 6x4 and is loaded with a trailer. When investigating critical cases, the minimum dynamic ground clearance is found to be as small as 123 mm at the axle 1, 78 mm at the exhaust outlet, 137 mm at the

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31

Afshinjavid, Saeed. "The effect of clearance upon friction and lubrication of large diameter hip resurfacing prosthesis using blood and combinations of bovine serum with aqueous solutions of CMC and hyaluronic acid as lubricants." Thesis, University of Bradford, 2010. http://hdl.handle.net/10454/4901.

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In real life, immediately after joint replacement, the artificial joint is actually bathed in blood (and clotted blood) instead of synovial fluid. Blood contains large molecules and cells of size ~ 5 to 20 μm suspended in plasma and considered to be a non-Newtonian (pseudoplastic) fluid with density of 1060 Kg/m³ and viscosity ~ 0.01 Pas at shear rates of 3000 s⁻¹ (as obtained in this work). The effect of these properties on friction and lubrication is not fully understood and, so far to our knowledge, hardly any studies have been carried out regarding friction of metal-on-metal bearings with

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32

Sirianni, Gina Louise. "Clearance concepts in the kidney." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ29329.pdf.

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33

Keeley, Robert. "The economics of landmine clearance." Thesis, Berlin dissertation.de, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?id=2865895&prov=M&dok_var=1&dok_ext=htm.

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34

Swallow, Robert Chandler. "Optimizing Minefield Planning and Clearance." Thesis, Monterey, California. Naval Postgraduate School, 1993. http://hdl.handle.net/10945/44810.

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With the collapse of the Soviet Union, the role of the United States Navy is changing from that of a blue water navy to one which must meet the challenges of coastal warfare. The mining of the amphibious carrier USS Tripoli (LPH-10) and the Aegis guided missile cruiser USS Princeton (CG-59), during the Persian Gulf War, shows the impact of mine warfare in these littoral regions. Congress, recognizing these trends, has funded a modern mine countermeasures (MCM) fleet of ships and helicopters to deploy with the proposed Naval Expeditionary Force, increased mine warfare research and development,

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35

Gasser, Russell. "Technology for humanitarian landmine clearance." Thesis, University of Warwick, 2000. http://wrap.warwick.ac.uk/3445/.

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This thesis examines the technology used for tools and equipment for humanitarian landmine clearance. The main focus is on the removal of mine and unxeploded ordnance contamination in the poor, heavily mined countries, particularly Afghanistan and Cambodia. Initially, the process of humanitarian demining in these countries was examined and described, and the relevant literature reviewed. Three studies were undertaken with a dual purpose of (a) providing relevant contributions to the science of mine clearance and (b) evaluating some of the methods commonly used in humanitarian demining research

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36

Collier, Clare Georgina. "Factors affecting lung clearance kinetics." Thesis, Open University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253714.

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37

Fournis, Camille. "Study of tip clearance flows." Thesis, KTH, Flygdynamik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-244423.

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The tip leakage vortex is responsible for the generation of stagnation pressure losses inside the compressor along with the outbreak of rotating stall and surge. The current paper analytically proved that a part of the losses is proportional to the vortex circulation squared. The evolution of this circulation has been investigated as part of a parametric study which tested several clearance heights. The work consists in adopting a simplified single blade configuration to study the physics of the flow by means of wind tunnel experiments and numerical calculations. Upon visualising the main feat

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38

Duchesne, Laurent Guillaume. "Advanced techniques for flutter clearance." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/49966.

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39

Mazur, Steven (Steven Andrew). "Turbine tip clearance loss mechanisms." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/82486.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2013.<br>This electronic version was submitted and approved by the author's academic department as part of an electronic thesis pilot project. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from department-submitted PDF version of thesis<br>Includes bibliographical references (p. 97-98).<br>Three-dimensional numerical simulations (RANS and URANS) were used to assess the impact of two specific design features, and of aspects of the actual turbine envir

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40

Carboni, Borrasé Rodolfo. "Clearance pricing optimization at Zara." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/52779.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; and, (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; in conjunction with the Leaders for Manufacturing Program at MIT, 2009.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (p. 110-111).<br>In almost thirty-four years after opening the doors to its first store, t

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41

McIlwaine, Patricia Margaret. "Airway clearance in cystic fibrosis." Thesis, Ulster University, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.625501.

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This thesis overviews and highlights a body of work performed at the BC Children's Hospital, Vancouver, Canada between 1986 and 2013, and involving travel to Belgium, Denmark and the United Kingdom. It is based on five articles published by McIlwaine on research and development in the use of various airway clearance techniques for the treatment of cystic fibrosis, namely: Autogenic Drainage; Positive Expiratory Pressure; Oscillating Positive Expiratory Pressure; and High Frequency Chest Wall Oscillation. The thesis comprises of seven chapters, including the introduction. Chapter 2 presents the

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42

Perry, Eugene Philip. "The assessment of liver disease by the clearance of tin colloid and other clearance studies." Thesis, University of Leicester, 1998. http://hdl.handle.net/2381/29555.

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43

Lemonnier, Philippe. "Etude de la clairance mucociliaire dans les bronchopathies chroniques." Lille 2, 1989. http://www.theses.fr/1989LIL2M266.

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44

Romberger, David D. "Optimization methods for mixed minefield clearance." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA319531.

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45

Buckney, David. "Clearance management in twin screw compressors." Thesis, City, University of London, 2017. http://openaccess.city.ac.uk/18235/.

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Although the performance of twin screw compressors is heavily dependent on the rotor clearances within them, chamber models, used as design aids, allow for the specification of their magnitude and distribution but do not account for how these may vary during operation, as a result of internal temperature changes caused by the compression process. A validated procedure has therefore been developed to enable a chamber model to predict compressor performance, while including the effects of rotor and casing distortion resulting from dependant thermal effects. This has been achieved by the use of s

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46

Young, Anna Mollie. "Tip-clearance effects in axial compressors." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610603.

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47

Gummesson, Simon, and Mikael Johnson. "Parallel Construction of Local Clearance Triangulations." Thesis, Blekinge Tekniska Högskola, Institutionen för datavetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-18895.

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The usage of navigation meshes for path planning in games and otherdomains is a common approach. One type of navigation mesh that recently has beendeveloped is the Local Clearance Triangulation (LCT). The overall aim of the LCT isto construct a triangulation in such a way that a property called theLocal Clearancecan be used to calculate a path in a more efficient and cheap way. At the time ofwriting the thesis there only exists one solution that creates an LCT, this solution isonly using the CPU. Since the process of creating an LCT involves the insertion ofmany points and edge flips which onl

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48

Storer, John Andrew. "Tip clearance flow in axial compressors." Thesis, University of Cambridge, 1991. https://www.repository.cam.ac.uk/handle/1810/251503.

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49

Oliveira, Ana Filipa Martins. "Microglial clearance function: dependence on phenotypes." Master's thesis, Faculdade de Ciências e Tecnologia, 2011. http://hdl.handle.net/10362/6715.

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Dissertação para obtenção do Grau de Mestre em Genética Molecular e Biomedicina<br>Microglia are active sensors of the brain and respond promptly to even minor disturbance in their microenvironment. A feature of this response is the accumulation of these cells at the site of lesion. Neonatal jaundice is a common condition of the newborn and may determine injury to neurons and glial cells, such as microglia, when levels of unconjugated bilirubin (UCB) are excessive. With the objective to evaluate whether microglia have a protective or deleterious role, we decided to assess, using the Boyden c

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50

Oliver, Pauline. "The restoration of scrub invaded chalk grassland : a comparison of scrub clearance techniques (manual clearance and livestock browsing)." Thesis, University of Bedfordshire, 2004. http://hdl.handle.net/10547/614894.

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The best way of dealing with the restoration of chalk grassland encroached by scrub is unclear and the subject of many debates. The traditional method is to clear the scrub primarily by manual methods of cutting the scrub and after clearance the land is left to regenerate naturally. More recently the development of using livestock to browse and gradually reduce the scrub is thought to be an alternative. However the effectiveness of either of these methods (Manual clearance or Livestock browsing) is questioned by many and some believe that once scrub has encroached, the soils beneath this will

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