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Dissertations / Theses on the topic 'Analytical modelling'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Stamatopoulos, Ioannis D. "Analytical techniques for modelling the laminated waveguide." Thesis, University of Surrey, 2003. http://epubs.surrey.ac.uk/844108/.

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This thesis is focused on a study on the dispersion formulation of the recently appeared ''laminated waveguide". In this framework a new method for the analysis of a wide variety of microwave components like posts, circular junctions or corners in rectangular waveguides is developed. This method can be used to model the posts in the laminated waveguide geometry and this was the main motivation of the present work. The method gives the impedance or admittance matrix of the microwave component by applying discrimination between the localised and accessible modes on the indirect mode matching (IM

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2

Robin, Victor Paul Michel. "Analytical and numerical modelling of artificially structured soils." Thesis, University of Exeter, 2014. http://hdl.handle.net/10871/16565.

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The effects of lime treatment on the mechanical properties of soils are usually not accounted for in the design of geotechnical structures. As a result the potential of lime treatment has not been fully exploited. In this thesis, a comprehensive experimental program has been carried out to identity the key features of the mechanical behaviour of structured materials. The chemical modifications arising from lime treatment were quantified using thermal analysis methods. From these results a non-linear chemo-mechanical coupling was established between the concentration of cementitious compounds a

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3

Weaver, Andrew John. "Numerical and analytical modelling of oceanic/atmospheric processes." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/27560.

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Two problems in oceanic/atmospheric modelling are examined in this thesis. In the first problem the release of fresh water from a midlatitude estuary to the continental shelf is modelled numerically as a Rossby adjustment problem using a primitive equation model. As the initial salinity front is relaxed, a first baroclinic mode Kelvin wave propagates into the estuary, while along the continental shelf, the disturbance travels in the direction of coastally trapped waves but with a relatively slow propagation speed. When a submarine canyon extends offshore from the estuary, the joint effect of b

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4

Bullock, Richard Simon. "Modelling analytical and physical variation in animal feeds." Thesis, University of Exeter, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324065.

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5

Vitucci, Gennaro. "Analytical and numerical modelling of thin functional layers." Thesis, Aberystwyth University, 2018. http://hdl.handle.net/2160/21af2cbb-6c9e-4b1a-8521-0113628e854e.

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The thesis deals with the study of thin layers and their function within larger structures. Different thin intephases appearing in mechanics and biomechanics are considered. The work aims at setting a manageable mathematical framework in mechanical modelling. Analytical methods are provided in order to achieve closed-form solutions and effective numerical procedures. Cartilage, which reveals crucial in transmitting loads without friction along the skeleton, is thoroughly investigated. Governing equations derived within mixture theory are used for a biphasic description of the tissue. Inhomogen

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6

Birchenko, Vasily Mihailovich. "Analytical modelling of wells with inflow control devices." Thesis, Heriot-Watt University, 2010. http://hdl.handle.net/10399/2349.

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Inflow Control Devices (ICD) have been successfully used in hundreds of wells around the world during the last decade and are now considered to be a mature well completion technology. This work is dedicated to the methodology of making following three decisions with respect to ICD application: 1. Selection between ICD and Interval Control Valves (ICV), the other advanced completion technology. 2. Identification of whether particular well is likely to benefit from ICD. 3. Quantification of the anticipated positive effect. Design of an advanced completion for a particular field application often

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7

Kostovasilis, Dimitrios. "Analytical modelling of the vibration of railway track." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/413811/.

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The high frequency dynamic behaviour of railway track, in both vertical and lateral directions, strongly affects the generation of rolling noise as well as other phenomena such as rail corrugation. One aspect that has received little attention is the coupling between the vertical and lateral directions. This thesis sets out to build an analytical model of a railway track with three principal targets: to improve the modelling for lateral vibration compared with existing models, to identify the most important sources of coupling between the vertical and lateral directions and to quantify the imp

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8

Klyukin, Yury Igorevich. "Modelling and analytical studies of magmatic-hydrothermal processes." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/84442.

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Hydrothermal processes play a major role in transporting mass and energy in Earth’s crust. These processes rely on hydrothermal fluid, which is dissolving, transporting and precipitating minerals and distribute heat. The composition of the hydrothermal fluid is specific for various geological settings, but in most cases it can be approximated by H₂O-NaCl-CO₂ fluid composition. The flow of hydrothermal fluid is controlled by differences in temperature, pressure and/or density of the fluid and hydraulic conductivity of the rock. In my work, I was focused on modeling of the hydrothermal fluid pro

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9

Robin, Victor. "Analytical and numerical modelling of artificially structured soils." Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0264/document.

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Le traitement des sols à la chaux est une méthode couramment utilisée pour améliorer les propriétés mécaniques de sols aux performances insuffisantes. Cependant, ces améliorations mécaniques ne sont pas prises en compte dans les calculs de dimensionnement. Cette thèse propose une méthodologie pour pallier à ce problème. Un programme expérimental approfondi est réalisé afin de décrire avec précision le comportement mécanique d’un sol traité et les processus associés à la structuration introduite par le traitement. La composition chimique, et notamment la quantité de composés cimentaires hydraté

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10

Thosar, A. "PEM fuel cells: analytical modelling and experimental validation." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2019. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/5188.

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11

Sternberger, Ronny. "Analytical modelling and controller design of a multilevel STATCOM." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=25797.

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12

Inniss, Clifton F. "Analytical and experimental modelling of timber-concrete composite beams." Thesis, University of Surrey, 1994. http://epubs.surrey.ac.uk/842780/.

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This thesis investigates the behaviour of timber-concrete composite beams with mechanical shear connectors. The analysis of these structures is complex due to the discontinuity caused by slip at the interface between the timber and concrete and can only be achieved by the use of sophisticated analytical techniques. A literature review has been carried out highlighting the fact that only a limited amount of theoretical and experimental work exists on timber- concrete composite beams. The fundamental objectives of this study were to develop suitable analytical and experimental models so as to be

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13

Milovanovic, Ana. "Semi-analytical modelling of time-variable blazar jet spectra." Thesis, University of Leeds, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496136.

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14

Selsil, Alana. "Analytical and numerical modelling of a compact catalytic reformer." Thesis, University of Liverpool, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415761.

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15

Corney, Ransome Kyle Tyrone. "Numerical, analytical & experimental modelling of channelised gravity currents." Thesis, University of Leeds, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426853.

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16

Aghababaie, Arian Aziz. "Experimental characterisaion analytical modelling of rocket nozzle side-loads." Thesis, University of Bristol, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.682561.

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During sea-level transients, such as engine start-up or shut-down, ramping chamber pressure causes the nozzle exit pressure to fall below ambient conditions, resulting in flow over-expansion. Internal shockwaves form that incite unsteady boundary layer separation producing an asymmetric internal pressure field that manifests as dynamic off-axis loads. These side-loads reduce the safe-life of the vehicle and have also be known to cause sudden catastrophic failure. As a result, rocket nozzle area ratio is purposely limited to ensure that flow separation does not occur elsewhere in the mission pr

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17

Ramli, Nabilah Binti. "Analytical modelling of sound transmission in a lined duct." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/361186/.

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The focus of this thesis is on the prediction of sound attenuation through a lined duct, based on a mathematical model. Ducts with a single section as well as multi-segmented sections are discussed. The duct of interest has a rectangular cross-section as normally used for ventilation purposes. The mean flow in a ventilation duct is very low and can be neglected. In this thesis, two-dimensional analytical models are developed for sound transmission in a series of different duct configurations. Two models of the lining behaviour are considered, either locally-reacting or bulk-reacting. The model

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18

Hosseini, Ehsan. "The analytical modelling of collective capability of human networks." Thesis, Brunel University, 2016. http://bura.brunel.ac.uk/handle/2438/12445.

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This thesis is an attempt to propose an analytical model for estimating and predicting capability in human networks (i.e. work teams). Capability in this context is the ability to utilise the collective inherent and acquired resources of individuals to complete a given task. The motivation of proposing a method for measuring collective capability of teams is to assist project managers and team builders to allocate and assign “The most capable teams” to a project to maximise the likelihood of success. The review of literature in engineering, human sciences and economics has led to a definition

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19

Kendall, James D. (James Douglas) 1959 Carleton University Dissertation Engineering Electrical. "Two-dimensional analytical modelling of the short-channel mosfet." Ottawa.:, 1987.

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20

Msadala, V. P. "Sediment yield prediction based on analytical methods and mathematical modelling." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2863.

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Thesis (MScEng (Civil Engineering)--University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: A study of the state of reservoir sedimentation in South Africa based on reservoir sediment deposit data, has shown that a considerable number of reservoirs have serious sedimentation problems. The analysis of the reservoir sediment deposit data showed that almost 25% of the total number of reservoirs have lost between 10 to 30% of their original storage capacity. The average storage loss due to sedimentation in South African reservoirs is approximately 0.3% per year while the average annual storag

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21

Vosloo, Surika. "Analytical modelling and optimization of a thermal convective microfluidic gyroscope." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4135.

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Thesis (MScEng (Mechanical and Mechatronic Engineering))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: This thesis deals with the mathematical optimization of the detecting chamber of a thermal convective microfluidic gyroscope and the comparison of several different optimization strategies. An analytical model is developed for the gyroscope and some design considerations are discussed. Sequential approximate optimization strategies are explained and compared to each other by implementing test problems fromthe literature. The optimization problem is formulated from the analytical

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22

Ziebart, Marek. "High precision analytical solar radiation pressure modelling for GNSS spacecraft." Thesis, University of East London, 2001. http://roar.uel.ac.uk/3563/.

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In global navigation satellite systems (GNSS) a fundamental operational component is the calculation of the orbits of the system spacecraft. This requires understanding and modelling the forces that act on the spacecraft. Solar radiation pressure (SRP) is the force caused by the impact of solar photons on the spacecraft surface. For GNSS spacecraft this is a significant force. If SRP is not included in the force model, then the calculated position of the spacecraft can be in error by between one and two hundred metres after one 12-hour orbit. SRP can be modelled using either analytical or empi

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23

Minton, Jeremy John. "Mathematical modelling of asymmetrical metal rolling processes." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/270348.

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This thesis explores opportunities in the mathematical modelling of metal rolling processes, specifically asymmetrical sheet rolling. With the application of control systems in mind, desired mathematical models must make adequate predictions with short computational times. This renders generic numerical approaches inappropriate. Previous analytical models of symmetrical sheet rolling have relied on ad hoc assumptions about the form of the solution. The work within this thesis begins by generalising symmetric asymptotic rolling models: models that make systematic assumptions about the rolling c

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24

Doan, Luong T. "Analytical and numerical modelling of transient convective transfers on SAGD performance." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ60286.pdf.

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25

Vafai, Fereydoon. "Analytical modelling and laboratory studies of particle transport in filter media." Online version, 1996. http://bibpurl.oclc.org/web/23534.

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26

Parry, M. R. "Finite element and analytical modelling of roughness induced fatigue crack closure." Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342763.

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27

Crofts, Jonathan Daniel. "Analytical modelling of multi-spacecraft reconnection layer measurements at the magnetopause." Thesis, University of Sussex, 2011. http://sro.sussex.ac.uk/id/eprint/6338/.

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An approach to determine and analyse the structure of Petschek-type magnetic reconnection is developed. This is achieved by extending an analytical model based on the Rankine-Hugoniot wave equation for shock jump conditions and is described in terms of its past applications and limitations. The model is applied to data from the CLUSTER multi-spacecraft mission using a boundary condition method optimised by two interlinked genetic algorithms. Case studies for a range of locations within the magnetopause region and local conditions are described and subjected to fluid and particle analyses to co

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28

Reyes, Olivia Maria Lei. "Experimental study and analytical modelling of compressive fracture in brittle materials." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/13869.

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29

Al-Aasam, Hameed. "Modern engineering design : analytical and numerical modelling of semi-rigid connections." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/modern-engineering-design-analytical-and-numerical-modelling-of-semirigid-connections(cdf16391-fc23-4a1a-aa15-443e0ae5adf3).html.

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The concept of semi-rigid connection and steel-concrete composite action has been extensively researched in the past. However, they are not widely used in practice due to the lack of detailed information, not only about the advantages of the semi-rigid design philosophy, but also about the potential risks if its effect is not accounted for. The above considerations were the motivations in taking up this research. Firstly, a numerical study to investigate the effect of connection stiffness on the natural frequency of semi-rigid frame was carried out using ABAQUS software. The results of this nu

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30

Lee, Nang Lap. "Analytical, centrifuge and numerical modelling of underwater vacuum consolidation of soft clay /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202007%20LEEN.

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31

Murcia, A. J. (Armando J. ). "Analytical modelling of the performance of a snow deposit under plate loading." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=64057.

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32

Venet, Aurele. "Semi-analytical modelling of the star formation history in a dusty universe." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271685.

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33

Wu, Lijian. "Analytical modelling of electromagnetic performance and parasitic effects of permanent magnet machines." Thesis, University of Sheffield, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647997.

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34

Barker, Peter Jay. "Analytical and simulation performance modelling of indoor infrared wireless data communications protocols." Thesis, Bournemouth University, 2003. http://eprints.bournemouth.ac.uk/302/.

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The Infrared (IR) optical medium provides an alternative to radio frequencies (RF) for low cost, low power and short-range indoor wireless data communications. Low-cost optoelectronic components with an unregulated IR spectrum provide the potential for very high-speed wireless communication with good security. However IR links have a limited range and are susceptible to high noise levels from ambient light sources. The Infrared Data Association (IrDA) has produced a set of communication protocol standards (IrDA I. x) for directed point-to-point IR wireless links using a HDLC (High-level Data L

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35

Greco, Angelo. "Numerical and analytical modelling of battery thermal management using passive cooling systems." Thesis, Lancaster University, 2016. http://eprints.lancs.ac.uk/78600/.

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This thesis presents the battery thermal management systems (BTMS) modelling of Li-ions batteries and investigates the design and modelling of different passive cooling management solutions from single battery to module level. A simplified one-dimensional transient computational model of a prismatic lithium-ion battery cell is developed using thermal circuit approach in conjunction with the thermal model of the heat pipe. The proposed model is compared to an analytical solution based on variable separation as well as three-dimensional (3D) computational fluid dynamics (CFD) simulations. The th

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36

Brossier, Pierre. "Combined analytical and empirical modelling of power losses in rolling element bearings." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI081.

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Le développement de l’industrie du transport conduit la conception de transmissions mécaniques de puissance toujours plus légères et efficientes. Les composants de ces transmissions doivent supporter des efforts transmis dans des environnements de plus en plus restreints. Du fait que les carters soient devenus de plus en plus compacts, les systèmes de refroidissement se sont aussi complexifiés. C’est dans ce contexte que les paliers à roulement, plus communément appelés roulements, doivent produire moins de chaleur, opérer dans des espaces plus proches des engrènements, tout en ayant des durée

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37

Gervilla, Palomar Víctor. "Metal film growth on weakly-interacting substrates : Stochastic simulations and analytical modelling." Licentiate thesis, Linköpings universitet, Nanodesign, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-154428.

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Thin films are nanoscale layers of material, with exotic properties useful in diverse areas, ranging from biomedicine to nanoelectronics and surface protection. Film properties are not only determined by their chemical composition, but also by their microstructure and roughness, features that depend crucially on the growth process due to the inherent out-of equilibrium nature of the film deposition techniques. This fact suggest that it is possible to control film growth, and in turn film properties, in a knowledge-based manner by tuning the deposition conditions. This requires a good understan

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38

Montazemi, M. "Capacity planning of computer systems and packet switched networks using analytical modelling." Thesis, University of Sussex, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374463.

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39

Graziani, Lorenzo. "Nano-engineered brick surfaces for biofouling prevention: experimental results and analytical modelling." Doctoral thesis, Università Politecnica delle Marche, 2015. http://hdl.handle.net/11566/242914.

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Le facciate degli edifici sono inevitabilmente soggette al deterioramento causato dalla colonizzazione di microorganismi quali batteri, alghe, cianobatteri, funghi, licheni, etc. Oltre ai tradizionali metodi manutentivi, si stanno sviluppando rivestimenti innovativi con caratteristiche sfavorevoli allo sviluppo di macchie biologiche. In questa direzione, si sta sviluppando l’applicazione di nanotecnologie, in particolare nano-rivestimenti fotocatalitici. Il materiale più diffuso in questo settore è il biossido di titanio (TiO2) grazie alla sua non-tossicità, stabilità foto-chimica e basso c

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40

Tvinghagen, Adam. "Arching Stability in Shallow Tunnels : A comparison between analytical and numerous solutions." Thesis, KTH, Jord- och bergmekanik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187031.

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41

Haldimann, Matthias. "Fracture strength of structural glass elements : analytical and numerical modelling, testing and design /." Lausanne : EPFL, 2006. http://library.epfl.ch/theses/?nr=3671.

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Thèse sciences, EPF Lausanne, no 3671 (2006), Faculté Environnement naturel, architectural et construit ENAC, Section de génie civil (Laboratoire de la construction métallique). Directeur: M.A. Hirt ; rapporteurs: M.H. Faber... et al.<br>Register. Literaturverz.

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42

Rosario, Maria C. P. "Applications of population and other analytical approaches to pharmacokinetic and pharmacokinetic/pharmacodynamic modelling." Thesis, University of Glasgow, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272881.

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43

Meredith, Jeffrey A. "Numerical and analytical modelling of downhole seismic sources--the near and far field." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/13755.

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Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1991.<br>Includes bibliographical references (leaves 173-182).<br>by Jeffrey A. Meredith.<br>Sc.D.

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44

Mo, Pin-Qiang. "Centrifuge modelling and analytical solutions for the cone penetration test in layered soils." Thesis, University of Nottingham, 2014. http://eprints.nottingham.ac.uk/14319/.

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The interpretation of measurements from the cone penetration test is still predominately based on empirical correlations, which can be attributed to the lack of understanding of penetration mechanisms, that involve severe stress-strain and shear dilatancy close to the probe. Even so, it remains one of the most widely used in-situ tools for site characterisation, and several methods for displacement pile design have been developed using CPT data. This research investigates the response of penetrometers and the behaviour of layered soils during installation of probes using geotechnical centrifug

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45

Schwarzer, Norbert. "Modelling of the contact mechanics of thin films using analytical linear elastic approaches." Doctoral thesis, N. Schwarzer: Arbitrary load distribution on a layered half space, ASME Journal of Tribology, Vol. 122, No. 4, October 2000, 672-681, ISSN 0742-4787; N. Schwarzer, F. Richter, G. Hecht: ”Elastic Field in a Coated Half Space under Hertzian pressure distribution”, J. of Surface & Coatings Technology 114 (1999) 292-304, ISSN 0257-8972; N. Schwarzer, Th. Chudoba, D. Billep, F. Richter: ”Investigation of coating substrate compounds using inclined spherical indentation”, J. of Surface & Coatings Technology 116 – 119 (1999) 244-252, ISSN 0257-8972, 2003. https://monarch.qucosa.de/id/qucosa%3A18161.

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In this work the author presents simulation procedures (mathematical models) with the aim to help determining and analysing the mechanical properties of coating-substrate-systems and finding an optimal coating structure which should protect the compound from inelastic deformation under a given range of load conditions. Such procedures may be used as a tool to minimise the search field for experimental work. For this purpose one would need a mathematical model which allows one to calculate the complete elastic field with all its displacement and stress components within a multilayer film on a

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46

Schwarzer, Norbert. "Modelling of the contact mechanics of thin films using analytical linear elastic approaches." Doctoral thesis, [S.l. : s.n.], 2004. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB11244005.

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47

March, Nathan. "Analytical, numerical and macroscopic modelling approaches for diffusive transport processes in heterogenous media." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/208260/1/Nathan_March_Thesis.pdf.

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This project used mathematical modelling to better understand diffusion in composite materials. It resulted in new analytical, numerical and macroscopic modelling techniques that can be applied to a greater variety of problems, are more efficient than existing methods and yield more accurate and efficient simulations of complex diffusion processes.

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48

Flint, Thomas. "Novel approaches for the modelling of heat flow in advanced welding processes." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/novel-approaches-for-the-modelling-of-heat-flow-in-advanced-welding-processes(fd47e4ea-95b2-447a-a9ad-79bf2c809978).html.

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The transient temperature fields induced by welding processes largely determine the size of the fusion and heat-affected zones, the microstructures, residual stresses and distortion both in the vicinity of the weld and in the final component as a whole. An accurate prediction of these fields relies heavily on the representation of the welding heat source, both in space and in time. The double-ellipsoidal heat source model proposed by Goldak and co-workers has been widely used to simulate the heat transferred from an electric arc to a component and to compute the induced transient temperature f

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Schwarzer, Norbert, and Peggy Heuer-Schwarzer. "Qualitative failure analysis on laminate structures of windsurfing boards using analytical linear elastic modelling." Universitätsbibliothek Chemnitz, 2006. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200600107.

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Recently developed mathematical tools for the modelling of contact problems on thin film structures are adapted to allow the investigation of arbitrarily mixed purely isotropic and transversally isotropic laminate structures. The new tool is applied to model a variety of load problems resulting in the failure of windsurfing boards consisting of a relatively thin laminate shell and a soft polymer foam core. It is shown that local impact and distributed bending loads due to “bad landing” after high jumps or contact with parts of the sailing gear (the so called rig) especially the front part of t

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50

Mallett, Michael John Disney. "An analytical and computer modelling study of atomic motion in fluids constrained by barriers." Thesis, University of Kent, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358039.

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