Relevant bibliographies by topics / Barriers to Simulation / Dissertations / Theses
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Dissertations / Theses on the topic 'Barriers to Simulation'

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Published: 4 June 2021
Last updated: 1 February 2022

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1

Brown, Martyn Rowan. "Numerical simulation of multiquantum barriers in 630nm laser diodes." Thesis, Swansea University, 2004. https://cronfa.swan.ac.uk/Record/cronfa42417.

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Red-emitting quantum well (QW) 630nm laser diodes have many potential applications in industry and medicine. The main profiteers would be in areas such as the development of critical memory, barcode readers and in the treatment of cancer. The limitation of the low inherent band offsets of the materials used to create such devices, gives rise to a high percentage of electron leakage via thermal activation in the QW active region. However, implementation of Multiquantum Barrier (MQB) into the p-type cladding region of the device enhances the effective conduction band discontinuity, thus increasi
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2

Mo, Lai-Sheung Melissa. "Computer simulation of a motorcycle and dummy rider in impact." Thesis, Brunel University, 1996. http://bura.brunel.ac.uk/handle/2438/7126.

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This thesis is concerned with the simulation model of an OPAT dummy rider on a Norton motorcycle in different configured impacts with a rigid barrier. The mathematical equations used in describing the mass-spring-damper-based impacts have been given. The software used in designing the mathematical model have also been outlined. The simulation model was then calibrated against full scale crash tests by means of film analysis and the processed digitised measurements. This led to the investigations into numerical processing of differentiation and integration. A parametric study was also conducted
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3

Rohdin, Patrik. "Energy efficiency and ventilation in Swedish industries barriers, simulation and control strategy." Doctoral thesis, Linköpings universitet, Energisystem, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-15531.

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The energy issue is presently in focus worldwide. This is not only due to increasing environmental concern regarding energy related emissions, but also due to the trend of increasing energy prices. Energy usage in the industrial sector in Sweden today represents about one third of the national energy use. A substantial part of that is related to support processes such as heating, ventilation and cooling systems. These systems are important as they are related both to energy cost and indoor climate management as well as to the health of the occupants. The purpose of this thesis is to reach a mo
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4

Heuzey, Marie-Claude. "Barriers to progress in the simulation of viscoelastic flows of molten plastics." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=35547.

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Polymer melts exhibit some degree of viscoelasticity in most industrial forming operations, and elasticity is particularly important in flows involving an abrupt contraction or expansion in the flow direction. However, the incorporation of a viscoelastic constitutive equation into computer models for polymer processing poses many problems, and for this reason inelastic models have been used almost exclusively to represent rheological behavior for flow simulation in the plastics industry.<br>In order to explore the limits of viscoelastic flow simulations, we used two nonlinear viscoelastic mode
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5

Heuzey, Marie-Claude. "Barriers to progress in the simulation of viscoelastic flows of molten plastics." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ55341.pdf.

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6

Hand, Jon William. "Removing barriers to the use of simulation in the building design professions." Thesis, University of Strathclyde, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366771.

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7

Doerr, Stefan 1987. "Applications of machine learning in molecular simulations : Transcending barriers." Doctoral thesis, Universitat Pompeu Fabra, 2016. http://hdl.handle.net/10803/459000.

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Molecular dynamics has established itself over the last years as a strong tool for structure-based molecular investigation in biology. Stefan Doerr's thesis concerns the application of machine learning methods to molecular dynamics data. The goal is twofold. To improve the sampling capabilities of molecular dynamics to allow for slower and more interesting biological processes to be studied and to improve the reproducibility, accessibility and power of molecular dynamics through the development of the required software tools. A great improvement in sampling speed is achieved in this thesis thr
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8

Kubrak, Volker. "Transport of two-dimensional electrons through magnetic barriers." Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364636.

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9

Salahuddin, Mohammad. "Simulation and modeling of the structure and surface profile of sputtered refractory films for VLSI barriers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0018/MQ27024.pdf.

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10

Salahuddin, Mohammad Carleton University Dissertation Engineering Electronics. "Simulation and modeling of the structure and surface profile of sputtered refractory films for VLSI barriers." Ottawa, 1997.

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11

Nyazika, Tatenda. "Conceptualization of fire barriers : fundamentals and experimental approach." Thesis, Lille 1, 2019. http://www.theses.fr/2019LIL1R044/document.

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Le feu est à la cause des pertes en vies humaines et des dégâts matériels considérables. En cas d’incendie dans un système fermé tel que les bâtiments, navires, ou avions, un feu doit être compartimenté et sa propagation restreinte afin de sauver des vies et des biens en laissant le temps aux personnes d’évacuer. Afin d’y arriver, une barrière de feu ayant une très faible inflammabilité qui limiterait la propagation du feu doit être conçu et assemblé. L’objective de ce travail de thèse est de fournir les bases fondamentales pour la conception de barrières feu efficace quand ils subissent une c
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12

Nye, Carla, Suzanne H. Campbell, Susan H. Hebert, Candice Short, and Marie Thomas. "Simulation in Advanced Practice Nursing Programs: A North American Study." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etsu-works/7354.

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Simulation is an effective pedagogy and is used extensively in prelicensure nursing education. Advanced practice nursing (APN) programs also use simulation as a component of their curriculum even though APN accreditation and certification organizations do not allow students to substitute simulation hours for the minimum 500 clinical hours. There is a lack of rigorous research studies supporting the benefits or describing the outcomes of using simulation in APN programs. This article presents the results of a descriptive survey on the use of simulation in APN programs in the United States and C
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13

Nehring, Wendy M., Teressa Wexler, Faye Hughes, and Audry Greenwell. "Faculty Development for the Use of High-Fidelity Patient Simulation: A Systematic Review." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/ijhse/vol1/iss1/4.

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This is a systematic review of the research data between 1995 and June 2013 concerning faculty development in the use of high-fidelity patient simulation for health professionals and students with a search of the following databases: CINAHL, Nursing and Allied Health Collection: Comprehensive, OVID Medline, ScienceDirect, PubMed, Scopus, and ProQuest Dissertation/Theses Database. The primary search terms were high-fidelity patient simulation and faculty development. Reference lists from relevant articles were also reviewed. Twenty-five studies were included for this review. The majority of the
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Ray, Sherry Rene. "Issues Related to Implementing High-Fidelity Simulation in a Nursing Program." ScholarWorks, 2017. https://scholarworks.waldenu.edu/dissertations/4753.

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Due to the shortage of clinical sites, nursing educators, deans, and directors are compelled to implement alternative clinical solutions such as high-fidelity simulation (HFS). The problem is that nursing educators are often not prepared to implement HFS as a teaching strategy. Faculty readiness is imperative for a successful simulation program and student outcomes. Therefore, the purpose of this study was to investigate the perceptions and practices of faculty, deans, and directors on the implementation of HFS across the nursing curriculum. Kolb's experiential learning theory provided the the
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15

Alsaadani, Sara. "A mixed-methods exploration of non-technical barriers in collaboration for building performance simulation use in architectural decision-making." Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/48197/.

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It is widely proposed that building performance simulation (BPS) software holds massive potential for architects; enabling them to empirically assess the impacts of design decisions based on energy-efficiency and performance. However, migration of BPS into the architectural world has been superseded with barriers. The majority of barriers identified in the literature are of a technical nature; related to limitations in software and difficulties experienced by architects when they attempt to use BPS tools. Instead, many architects rely on the services of specialists in BPS (BPS specialists), an
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16

Sumon, Sarwan Kumar. "Innovative and effective transport solutions for masonry arch bridges, safety barriers and road humps through testing and numerical simulation." Thesis, University of Ulster, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.446253.

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17

Farrand, Steven Wesley. "Rockfall Modelling Parameters and the Control Barrier at Stockton Mine, New Zealand." Thesis, University of Canterbury. Geological Sciences, 2007. http://hdl.handle.net/10092/3520.

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Solid Energy New Zealand plans to mine a 6 to 10m thick coal seam below the Mt. Augustus and Mt. Fredrick ridgeline at Stockton Mine near Westport, NZ. The coal is covered by up to 30m of overburden, which requires removal to access 4 million tones of high quality coal. However, the Coal Mining Lease boundary (CML) is located just below the basal coal measures and the neighbouring land is owned by the Department of Conservation (DoC). In addition, the neighbouring DoC estate is Powelliphanta Augustus snail habitat. It is necessary to remove the overburden without releasing any material above n
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18

Chen, Zongyuan. "Adsorption of radionuclides on engineered and geological barriers of high-level nuclear waste repositories : sorption experiments, spectroscopy study, geochemical modelling and molecular dynamics simulation." Nantes, 2014. http://www.theses.fr/2014NANT2081.

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L'objectif de cette thèse est de contribuer au développement de modèles de sorption des cations (Eu3+Cs+ et Ni2+) par les matériaux argileux pertinents et importants dans le contexte du stockage des déchets radioactifs de forte activité (barrières ouvragée et géologique). La modélisation géochimique se base sur le résultat d'expériences de type batch et d'études spectroscopiques effectuées en fonction des facteurs significatifs pouvant affecter le sorption (pH, impact de la complexation en solution) dans des conditions proches de celles attendues in-situ (système intact, atmosphère contrôlée).
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19

Al, Sanad Shaikha Abdulattef. "The promotion of sustainable construction practices in Kuwait." Thesis, University of Manchester, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603228.

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The construction industry has a significant impact on the environment. It is responsible for a large proportion of global CO2 emissions, as well as the use of both natural resources and energy reserves. Green building practices are becoming increasingly recognised as a way of mitigating CO2 emissions and energy consumption, with economic, environmental, social and financial benefits accruing. The aim of the research reported here is to investigate the opportunities to promote sustainable construction practices in Kuwait. This entails identifying the current status of green construction practic
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20

Fraser, Harris Andrew Peter. "Development of a new non-linear elastic hydro-mechanical model for the simulation of compacted MX-80 bentonite : application to laboratory and in situ sealing experiments for geo-repository engineered barriers." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/20419.

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The management of radioactive wastes is a significant environmental issue facing the international nuclear community today. The current international consensus is for disposal of higher activity waste from a variety of sources in deep geological disposal facilities (GDFs). Hydraulic seals, often planned to consist of compacted bentonite-sand blocks, are an important part of the closure phase of a GDF. As such, an understanding of the hydro-mechanical (HM) behaviour of these seals, and the ability to model and predict their behaviour is fundamental to support many planned safety cases and licen
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21

Porter, Roy M. "Simulation of double barrier resonant tunneling diodes." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA313497.

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22

Zhu, Ping. "Predictive modelling and simulations of internal transport barriers in tokamaks /." Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3008483.

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23

Leikkonen, R. (Rainer). "Crash test simulation and optimization of road side barrier." Master's thesis, University of Oulu, 2019. http://jultika.oulu.fi/Record/nbnfioulu-201902281254.

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Abstract. The performance requirements for roadside barriers are partly contradictory. The barrier should be stiff enough to contain the car during crash. At the same time the barrier should be flexible enough that the accelerations experienced by the passengers are not dangerously high. To achieve balance between the stiffness and flexibility might require several iterations of the barrier geometry. Performing a full-scale crash test for each iteration is not desirable. Also, to reduce the man hours required for the development of a new barrier the process of iterating different barrier geome
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24

BREED, ANIKET AJITKUMAR. "SIMULATION STUDY OF PARASITIC BARRIER FORMATION IN Si/SiGe HETEROSTRUCTURES." University of Cincinnati / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1029256143.

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25

SAMPATHKUMARAN, RAMANUJAN. "DESIGN AND SIMULATION OF SiGe HBT FOR POWER APPLICATIONS AT 10GHz." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085582751.

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26

Erni, David. "Rendite und Risiko von Barrier Reverse Convertibles." St. Gallen, 2007. http://www.biblio.unisg.ch/org/biblio/edoc.nsf/wwwDisplayIdentifier/04602694001/$FILE/04602694001.pdf.

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27

Constans, Charlotte. "Modulation of brain activity with low intensity focused ultrasound." Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC006/document.

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Devant l'impact des maladies neurodégénératives sur la société, les thérapies par ultrasons focalisés apparaissent comme des techniques prometteuses combinant non invasivité, précision spatiale millimétrique et capacité d'atteindre les structures profondes du cerveau. Cependant, des travaux sont encore nécessaires pour renforcer les effets de la neuromodulation, comprendre les mécanismes sous-jacents et contrôler la sûreté de la technique avant d'entreprendre des essais cliniques. Dans cette thèse, la propagation des ultrasons dans le cerveau de rongeurs et de singes a été étudiée numériquemen
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Gresch, Nathalie. "Das Verhalten von Bonuszertifikaten in der Nähe der Barriere." St. Gallen, 2008. http://www.biblio.unisg.ch/org/biblio/edoc.nsf/wwwDisplayIdentifier/04603106001/$FILE/04603106001.pdf.

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29

Bednarz, Piotr. "Finite element simulation of stress evolution in thermal barrier coating systems." Jülich : Forschungszentrum, Zentralbibliothek, 2007. http://d-nb.info/987858971/34.

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30

Bednarz, Piotr. "Finite element simulation of stress evolution in thermal barrier coating systems." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=982532172.

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31

Basnet, Keshav. "Flow around porous barriers: fundamental flow physics and applications." Diss., University of Iowa, 2015. https://ir.uiowa.edu/etd/1824.

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Investigating flow and turbulence structure around a barrier mounted on the ground or placed in its vicinity is a fundamental problem in wind engineering because of many practical applications related to protection against adverse effects induced by major wind storms (e.g., hurricanes) and snow events (e.g., snow fences used to reduce adverse effects of snow drifting on the roads). In this work the focus is on the case when the obstacle/barrier is porous and the shape of the obstacle is close to a high-aspect-ratio rectangular cylinder situated in the vicinity of the ground. The study employs
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32

Assagaf, Muhammad Alimuddin Hamzah. "NUMERICAL SIMULATIONS OF TSUNAMI PRESSURE ACTING UPON COASTAL BARRIERS ON WET AND DRYLANDS." Kyoto University, 2001. http://hdl.handle.net/2433/150667.

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33

Muusha, Takura. "Monte Carlo studies of generalized barrier contracts." Thesis, Mälardalen University, Mälardalen University, Department of Mathematics and Physics, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-4317.

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<p>This paper examines the pricing of barrier options using Monte Carlo Simulations. MATLAB based software is developed to estimate the price of the option using Monte Carlo simulation. We consider a generalized barrier option of knock out type, but we let the domain take the shape of a rectangular box. We investigate the price of this kind of barrier options. We investigate how the box is placed and what effect it will have on the price of the option. We compare the number of trajectories that are needed in order to achieve the same accuracy between this box barrier option and an ordinary opt
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34

Rakotomalala, Noémie. "Simulation numérique de l’écaillage des barrières thermiques avec couplage thermo-mécanique." Thesis, Paris, ENMP, 2014. http://www.theses.fr/2014ENMP0020/document.

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L'objectif de ce travail de thèse est de mettre en place une simulation thermo-mécanique couplée d'une aube revêtue permettant de modéliser l'écaillage de la barrière-thermique qui survient dans les conditions de service de l'aube. La barrière thermique est un revêtement isolant déposé à la surface du substrat monocristallin base Nickel AM1 constitutif de l'aube préalablement recouverte d'une sous-couche. Le mode de dégradation dominant dans ces systèmes est la création de fissures qui résultent de l'accroissement des ondulations hors-plan d'une couche intermédiaire d'oxyde formée en service en
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35

Terki, Rachida. "Simulation du comportement des barrières thermiques déposées par projection thermique." Besançon, 2005. http://www.theses.fr/2005BESA2015.

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Le concept de barrière thermique (BT) est un objectif majeur dans le développement des parties chaudes des turbines à gaz. A l'heure actuelle, les systèmes les plus performants sont constitués de revêtements de zircone partiellement stabilisée à l'yttrine. Cependant l'altération des propriétés thermomécaniques du revêtement en service, incite à l'exploration de nouvelles pistes susceptibles de fournir une alternative à la zircone yttriée. C'est pourquoi, dans le cadre de cette thèse, nous avons envisagé d'étudier une série de matériaux céramiques, considérés comme candidats pour cette applicat
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36

Fjeldheim, Ek Dan, Anes Mulisic, and Filip Syta. "Entry barriers on the training simulator market for construction vehicles in Europe." Thesis, Linnéuniversitetet, Ekonomihögskolan, ELNU, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-11240.

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The research question, which we will answer in this paper, is following: What are the four entry barriers that are most difficult to overcome when entering the training simulator market for construction vehicles in Europe? To answer this research question we performed a study on nine companies in the training simulator market for construction vehicles and asked them to rank 25 entry barriers on a Likert scale in order of importance. The results of our research study show us the barriers of importance. The top four barriers are: R&amp;D expenses in entering a market, access to distribution cha
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Garcia, Anthony. "Évolution de la porosité des grains : une solution aux problèmes de formation planétaire ?" Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1142/document.

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Dans les disques protoplanétaires, les grains micrométriques croissent jusqu'à atteindre des tailles de planétésimaux avant de finalement former des planètes. Cependant,des études dynamiques ont montré qu'une fois que les grains atteignent une taille critique, ils dérivent rapidement vers l'étoile et y sont accrétés. Ce problème est connu comme la barrière de dérive radiale. De plus, des expériences en laboratoire ont montré que les grains peuvent fragmenter ou rebondir et ainsi arrêter la croissance avant les tailles kilométriques.Afin de passer outre ces barrières, plusieurs méthodes ont été
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Bovay, Viviane. "Valuation methods applied to lookback capped multi bonus barrier certificates." St. Gallen, 2009. http://www.biblio.unisg.ch/org/biblio/edoc.nsf/wwwDisplayIdentifier/03604923002/$FILE/03604923002.pdf.

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39

Chirayukool, Pokpong. "The valuation of exotic barrier options and American options using Monte Carlo simulation." Thesis, University of Warwick, 2011. http://wrap.warwick.ac.uk/45027/.

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Monte Carlo simulation is a widely used numerical method for valuing financial derivatives. It can be used to value high-dimensional options or complex path-dependent options. Part one of the thesis is concerned with the valuation of barrier options with complex time-varying barriers. In Part one, a novel simulation method, the contour bridge method, is proposed to value exotic time-varying barrier options. The new method is applied to value several exotic barrier options, including those with quadratic and trigonometric barriers. Part two of this thesis is concerned with the valuation of Amer
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Vanbésien, Olivier. "Simulation et caractérisation des diodes double barrière à effet tunnel résonnant." Lille 1, 1991. http://www.theses.fr/1991LIL10033.

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Ce travail est consacré à la simulation et à la caractérisation électrique de diodes double barrière à effet tunnel résonnant. Ces composants tirent parti des effets d'interférence des ondes associées aux électrons et nous analysons ces phénomènes en régime indépendant du temps et en régime dynamique. Dans ce but, nous présentons des logiciels de simulation permettant de calculer les probabilités de passage par effet tunnel ainsi que les flux de transfert de charges pour des transports cohérent et incohérent. A l'aide de ces formalismes, nous avons étudié les propriétés bidimensionnelles du co
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Corea, Francesco. "Hedging in a discontinuous market: the barrier option and the unlikely profit." Master's thesis, NSBE - UNL, 2013. http://hdl.handle.net/10362/11594.

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A Work Project, presented as part of the requirements for the Award of a Masters Degree in Finance from the NOVA – School of Business and Economics<br>In principle, the Black-Scholes equation assumes log-normal underlying prices, but market dynamics do not empirically fit these assumptions, and the related scale invariance and continuity properties fail at shorter time spans. The aim of this study is to analyze how the pricing-hedging model may be adjusted when prices are assumed to have discontinuous paths resulting in heavy tails distribution of returns. Numerically, the model seems to
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Jaafar, Mohammed Dhia. "The development of simulation and analytical models to evaluate tight zone/barrier properties from vertical interference testing." Thesis, Heriot-Watt University, 1989. http://hdl.handle.net/10399/954.

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43

De, Ponte Candice Natasha. "Pricing barrier options with numerical methods / Candice Natasha de Ponte." Thesis, North-West University, 2013. http://hdl.handle.net/10394/8672.

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Barrier options are becoming more popular, mainly due to the reduced cost to hold a barrier option when compared to holding a standard call/put options, but exotic options are difficult to price since the payoff functions depend on the whole path of the underlying process, rather than on its value at a specific time instant. It is a path dependent option, which implies that the payoff depends on the path followed by the price of the underlying asset, meaning that barrier options prices are especially sensitive to volatility. For basic exchange traded options, analytical prices, based on the Bl
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Ivchenko, Dmitrii. "Modeling and design of a physical vapor deposition process assisted by thermal plasma (PS-PVD)." Thesis, Limoges, 2018. http://www.theses.fr/2018LIMO0099/document.

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Le procédé de dépôt physique en phase vapeur assisté par plasma thermique (PS-PVD) consiste à évaporer le matériau sous forme de poudre à l’aide d’un jet de plasma d’arc soufflé pour produire des dépôts de structures variées obtenus par condensation de la vapeur et/ou dépôt des nano-agrégats. Dans le procédé de PS-PVD classique, l’intégralité du traitement du matériau est réalisée dans une enceinte sous faible pression, ce qui limite les phénomènes d’évaporation ou nécessite d’utiliser des torches de puissance importante. Dans ce travail, une extension du procédé de PS-PVD conventionnel à un p
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Elam, Dana. "A direct numerical simulation of dielectric barrier discharge (DBD) plasma actuators for turbulent skin-friction control." Thesis, University of Warwick, 2012. http://wrap.warwick.ac.uk/49964/.

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Turbulent skin-friction control is the subject of much research and the use of transverse (spanwise) oscillating motions offers the means of obtaining a significant reduction in skin-friction. Dielectric barrier discharge (DBD) actuators can be used to generate spanwise oscillating waves but the difficulty in placing a sensor in the area of plasma gives rise to problems in recording near-wall velocities. A modified version of the Shyy et al. (2002) DBD model was integrated into a direct numerical simulation (DNS). This numerical model was used in a series of two-dimensional simulations, in ini
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Girard-Alcindor, Valerian. "Above barrier narrow resonances in fluorine-15." Thesis, Normandie, 2020. http://www.theses.fr/2020NORMC209.

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L’étude des noyaux non liés permet de tester notre compréhension du noyau atom- ique dans des conditions extrêmes. Dans cette thèse nous avons analysé deux expériences distinctes réalisées au GANIL au cours desquels nous avons étudié le fluor 15 situé deux neutrons au delà de la drip-line proton. Une des particularités intéressante de ce noyau est la présence d’états de parité négative particulièrement étroits et situés au dessus des barrières Coulombiennes et centrifuges. Nous nous sommes intéressés dans ce travail à ces états, nous avons confirmé l’existence du second état excité 1/2- et avo
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Ghayaza, Mariem. "Réactivité argiles-polluants métalliques : simulation des barrières argileuses des sites de stockage des déchets." Phd thesis, Université d'Orléans, 2012. http://tel.archives-ouvertes.fr/tel-00717388.

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Le stockage des déchets ménagers et assimilés est devenu un enjeu important pour l'environnement. Les smectites, ayant une faible perméabilité et une forte capacité à retenir les polluants, sont fréquemment utilisées comme barrière de sécurité passive au fond des alvéoles de stockage. Ce travail consiste à simuler au laboratoire l'infiltration de solutions de polluants métalliques dans des smectites, d'analyser les mécanismes d'interaction et prévoir leur comportement hydraulique et physico-chimique. Pour cela, nous utilisons des smectites naturelles de référence (SWy2 échangée avec différents
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48

Anderson, Tom Harper. "Optoelectronic simulation of nonhomogeneous solar cells." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/25892.

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This thesis investigates the possibility of enhancing the efficiency of thin film solar cells by including periodic material nonhomogeneities in combination with periodically corrugated back reflectors. Two different types of solar cell are investigated; p-i-n junctions solar cells made from alloys of hydrogenated amorphous silicon (a-Si:H) (containing either carbon or germanium), and Schottky barrier junction solar cells made from alloys of indium gallium nitride (InξGa1-ξN). Material nonhomogeneities are produced by varying the fractions of the constituent elements of the alloys. For example
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49

Hibbe, Florian, Lars Heinke, Christian Chmelik, et al. "The nature of surface barriers on nanoporous solids explored by microimaging of transient guest distributions and Monte Carlo simulations." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-185051.

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Jarvio, Andre, Thantida Wolf, and Martin Hardin. "Barriers of Virtual Reality Products : A study of launching a walking simulator into the US B2B market." Thesis, Linnéuniversitetet, Institutionen för marknadsföring (MF), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-76319.

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Virtual reality is a rapidly growing innovation that has many real-world applications inengineering, healthcare, education and much more. More startups are emerging, and someof these companies are developing virtual reality simulators that allows the user toimmerse themselves completely in the virtual world with the use hardware devices.Companies like Infinadeck and Omnifinity have developed one such hardware known asthe walking simulator. This paper studied virtual reality and the barriers that occur whenlaunching a virtual reality walking simulator in the US for the entertainment industry. T
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