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Dissertations / Theses on the topic 'Simulations'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

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1

Dave, Jagrut Durdant. "Parallel Discrete Event Simulation Techniques for Scientific Simulations." Thesis, Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6942.

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Exponential growth in computer technology, both in terms of individual CPUs and parallel technologies over the past decades has triggered rapid progress in large scale simulations. However, despite these achievements it has become clear that many conventional state-of-the-art techniques are ill-equipped to tackle problems that inherently involve multiple scales in configuration space. Our difficulty is that conventional ("time driven" or "time stepped") techniques update all parts of simulation space (fields, particles) synchronously, i.e. at time intervals assumed to be the same throughout th
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2

Svensson, Henrik. "Simulations." Doctoral thesis, Linköpings universitet, Institutionen för datavetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-98050.

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This thesis is concerned with explanations of embodied cognition as internal simulation. The hypothesis is that several cognitive processes can be explained in terms of predictive chains of simulated perceptions and actions. In other words, perceptions and actions are reactivated internally by the nervous system to be used in cognitive phenomena such as mental imagery. This thesis contributes by advancing the theoretical foundations of simulations and the empirical grounds on which they are based, including a review of the empiricial evidence for the existence of simulated perceptions and acti
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Pawlik, Amadeusz, and Henry Andersson. "Visualising Interval-Based Simulations." Thesis, Högskolan i Halmstad, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-28592.

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Acumen is a language and tool for modeling and simulating cyber-physical systems. It allows the user to conduct simulations using a technique called rigorous simulation that produces results with explicit error bounds, expressed as intervals. This feature can be useful when designing and testing systems where the reliability of results or taking uncertainty into account is important. Unfortunately, analyzing these simulation results can be difficult, as Acumen supports only two ways of presenting them: raw data tables and 2D-plots. These views of the data make certain kinds of analysis cumbers
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4

Huang, Ya-Lin. "Ad hoc distributed simulation: a method for embedded online simulations." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49060.

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The continual growth of computing power in small devices has motivated the development of novel approaches to optimizing operational systems efficiently and effectively. These optimization problems are often so complex that solving them analytically may be difficult, if not prohibited. One method for solving such problems is to use online simulation. However, challenges in using online simulation include the issues of responsiveness (e.g., because of communication delays), scalability, and failure resistance. To tackle these issues, this study proposes embedding online simulations into a netwo
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5

Andersson, Håkan. "Parallel Simulation : Parallel computing for high performance LTE radio network simulations." Thesis, Mittuniversitetet, Institutionen för informationsteknologi och medier, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-12390.

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Radio access technologies for cellular mobile networks are continuously being evolved to meet the future demands for higher data rates, and lower end‐to‐end delays. In the research and development of LTE, radio network simulations play an essential role. The evolution of parallel processing hardware makes it desirable to exploit the potential gains of parallelizing LTE radio network simulations using multithreading techniques in contrast to distributing experiments over processors as independent simulation job processes. There is a hypothesis that parallel speedup gain diminishes when running
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6

Singh, Harpreet. "Computer simulations of realistic microstructures implications for simulation-based materials design/." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/22564.

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Thesis (Ph. D.)--Materials Science and Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Dr. Arun Gokhale; Committee Member: Dr. Hamid Garmestani; Committee Member: Dr. Karl Jacob; Committee Member: Dr. Meilin Liu; Committee Member: Dr. Steve Johnson.
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7

Strauss, Martin. "Dynamic market simulations." Zürich : ETH, Eidgenössische Technische Hochschule Zürich, Dept. für Informatik, 2001. http://e-collection.ethbib.ethz.ch/show?type=dipl&nr=45.

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8

Martin, Bruno. "Simulations d'automates cellulaires." Habilitation à diriger des recherches, Université de Nice Sophia-Antipolis, 2005. http://tel.archives-ouvertes.fr/tel-00212057.

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Ce mémoire est composé de deux grandes parties. Dans la première, nous simulons le fonctionnement d'automates cellulaires par différents modèles de calcul parallèle comme les PRAM, les XPRAM et les machines spatiales. Nous obtenons ainsi différentes preuves de l'universalité de ces modèles. Nous tirons quelques conséquences de ces résultats du point de vue de la calculabilité et de la complexité. Dans la seconde partie, nous considérons les automates cellulaires définis sur des graphes de Cayley finis. Nous rappelons la simulation de Róka qui permet de mimer le fonctionnement d'un tore hexagon
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9

Rautio, R. P. (Riku-Petteri). "Cosmological Zoom simulations." Bachelor's thesis, University of Oulu, 2016. http://urn.fi/URN:NBN:fi:oulu-201610272951.

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Cosmological “zoom-in” simulations are a modern class of numerical simulations with many interesting uses. In zooms an area of interest, such as a galaxy, is resolved to a high degree, while it’s surroundings are left at a coarser resolution to relieve the computational burden. Here I review some recent studies using zoom simulations and discuss the benefits and potential of zoom simulations compared to regular numerical simulations as well as semianalytic models. I will focus on the advantages of the increased resolution in zooms, such as the ability to resolve giant molecular clouds and to b
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10

Yaiche, Francis. "Les simulations globales." Paris 3, 1993. http://www.theses.fr/1994PA030012.

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On parle beaucoup aujourd'hui de simulations globales en didactique des langues. Cette these present six canevas d'invention "generaliste" et quatre utilisables en langue de specialite (canevas elabores au belc depuis 1973). La simulation globale est une faire "debarquer" sur un lieu-theme (une ile, un immeuble, un village, un cirque, un hotel, une entreprise, etc. ) l'imaginaire d'un groupe d'eleves qui prendront une identite fictive, lieu-theme sur lequel l'enseignant federera toutes les activites d'expression ecrite et orale. Cette facon de faire entrer dans la classe le reel est aussi une
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11

Gutiérrez, Daniel. "Green Fuel Simulations." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-79244.

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Many industries have entered a new global phase which takes the environment in mind. The gas turbine industry is no exception, where the utilization of green fuels is the future to spare the environment from carbon dioxide and NOx emissions. Hydrogen has been identified as a fuel which can fulfil the global requirements set by governments worldwide. Combustion instabilities are not inevitable during gas turbine operations, especially when using a highly reactive and diffusive fuel as hydrogen. These thermoacoustics instabilities can damage mechanical components and have economic consequences i
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Tarmyshov, Konstantin B. "Molecular dynamics simulations." Phd thesis, [S.l.] : [s.n.], 2007. https://tuprints.ulb.tu-darmstadt.de/787/1/000_pdfsam_PhD_thesis_-_All_-_LinuxPS2PDF.ps.pdf.

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Molecular simulations can provide a detailed picture of a desired chemical, physical, or biological process. It has been developed over last 50 years and is being used now to solve a large variety of problems in many different fields. In particular, quantum calculations are very helpful to study small systems at a high resolution where electronic structure of compounds is accounted for. Molecular dynamics simulations, in turn, are employed to study development of a certain molecular ensemble via its development in time and space. Chapter 1 gives a short overview of techniques used today in mol
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Fong, Heung Wah. "Editing explosion simulations /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?COMP%202004%20FONG.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2004.<br>Includes bibliographical references (leaves 69-71). Also available in electronic version. Access restricted to campus users.
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14

Jain, Sunny. "Hypersonic nonequilibrium flow simulations over a blunt body using bgk simulations." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-2406.

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15

Lyu, Yeonhwan. "Simulations and Second / Foreign Language Learning: Improving communication skills through simulations." See Full Text at OhioLINK ETD Center (Requires Adobe Acrobat Reader for viewing), 2006. http://www.ohiolink.edu/etd/view.cgi?toledo1147363791.

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16

Buchta, Christian, and Sara Dolnicar. "Learning by simulation. Computer simulations for strategic marketing decision support in tourism." SFB Adaptive Information Systems and Modelling in Economics and Management Science, WU Vienna University of Economics and Business, 2003. http://epub.wu.ac.at/1718/1/document.pdf.

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This paper describes the use of corporate decision and strategy simulations as a decision-support instrument under varying market conditions in the tourism industry. It goes on to illustrate this use of simulations with an experiment which investigates how successful different market segmentation approaches are in destination management. The experiment assumes a competitive environment and various cycle-length conditions with regard to budget and strategic planning. Computer simulations prove to be a useful management tool, allowing customized experiments which provide insight into the functio
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17

Leveugle, Benoît. "Simulation DNS de l’interaction flamme-paroi dans les moteurs à allumage commandé." Thesis, Rouen, INSA, 2012. http://www.theses.fr/2012ISAM0021/document.

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Dans le cadre du projet INTERMARC (INTERaction dans les Moteurs à Allumage Commandé), la tâche du CORIA a consisté à produire une base de données à l'échelle RANS (provenant de données DNS) afin de tester, valider et modifier le modèle d'interaction développée par IFPen. Ce modèle vise l'ajout d'une composante d'interaction, phénomène non pris en compte par les lois de paroi actuelles.Ce projet repose sur l'interaction forte entre les différents protagonistes présents. Le CORIA et le CETHIL ont travaillé ensemble à la réalisation d'une base de données pour tester les modèles initiaux proposés
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18

Celik, Nurcin. "INTEGRATED DECISION MAKING FOR PLANNING AND CONTROL OF DISTRIBUTED MANUFACTURING ENTERPRISES USING DYNAMIC-DATA-DRIVEN ADAPTIVE MULTI-SCALE SIMULATIONS (DDDAMS)." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/195427.

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Discrete-event simulation has become one of the most widely used analysis tools for large-scale, complex and dynamic systems such as supply chains as it can take randomness into account and address very detailed models. However, there are major challenges that are faced in simulating such systems, especially when they are used to support short-term decisions (e.g., operational decisions or maintenance and scheduling decisions considered in this research). First, a detailed simulation requires significant amounts of computation time. Second, given the enormous amount of dynamically-changing
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19

Stucki, Pascal. "Obstacles in pedestrian simulations." Zürich : ETH, Eidgenössische Technische Hochschule Zürich, Department of Computer Science, 2003. http://e-collection.ethbib.ethz.ch/show?type=dipl&nr=129.

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20

Barakat, Firas Risnes. "Simulations of imitative learning." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10108.

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<p>This Master thesis presents simulations within the field of imitative learning. The thesis starts with a review of the work done in my depth study, looking at imitative learning in general. Further, forward and inverse models are studied, and a case study of a Wolpert et al article is done. An architecture using the recurrent neural network with parametric bias (RNNPB) and a PID-controller by Tani et al is presented, and later simulated using MATLAB and the breve simulation environment. It is tested if the RNNPB is suitable for imitative learning. The first experiment was quite successful,
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21

Feldmeier, Achim, Wolf-Rainer Hamann, D. Rätzel, and Lidia M. Oskinova. "Hydrodynamic simulations of clumps." Universität Potsdam, 2007. http://opus.kobv.de/ubp/volltexte/2008/1797/.

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Clumps in hot star winds can originate from shock compression due to the line driven instability. One-dimensional hydrodynamic simulations reveal a radial wind structure consisting of highly compressed shells separated by voids, and colliding with fast clouds. Two-dimensional simulations are still largely missing, despite first attempts. Clumpiness dramatically affects the radiative transfer and thus all wind diagnostics in the UV, optical, and in X-rays. The microturbulence approximation applied hitherto is currently superseded by a more sophisticated radiative transfer in stochastic media. B
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22

Sigurjonsson, Kjartan Örn. "Dual gradient drilling simulations." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for petroleumsteknologi og anvendt geofysikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18362.

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The system studied in this thesis is called the Low Rise Return system and uses a partly filled marine drilling riser with a variable mud level which is used control the bottom holes pressure.Initially main components of the Low Riser Return System are listed and explained. Then the performance characteristics of the system are explored. Level movements in riser during level increase and decrease at constant mud pump rates are explained along with the effect of mud pump rate on maximum level increase and decrease rates.A simple simulator is then presented that calculates the bottom hole pressu
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23

Banon, Navarro Alejandro. "Gyrokinetic large Eddy simulations." Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209592.

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Le transport anormal de l’energie observé en régime turbulent joue un rôle majeur dans les propriétés de stabilite des plasmas de fusion par confinement magnétique, dans des machines comme ITER. En effet, la turbulence plasma est intimement corrélée au temps de confinement de l’energie, un point clé des recherches en fusion thermonucléaire.<p>Du point de vue théorique, la turbulence plasma est décrite par les équations gyrocinétiques, un ensemble d équations aux dérivées partielles non linéaires couplées. Par suite des très différentes échelles spatiales mises en jeu dans des conditions expéri
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24

Sliozberg, Yelena R. Abrams Cameron F. "Molecular simulations of chaperonins /." Philadelphia, Pa. : Drexel University, 2007. http://hdl.handle.net/1860/1871.

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25

Banfield, Robert E. "Learning on complex simulations." [Tampa, Fla.] : University of South Florida, 2007. http://purl.fcla.edu/usf/dc/et/SFE0002112.

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26

Wong, Jeffrey. "Simulations of Surfactant Spreading." Scholarship @ Claremont, 2011. http://scholarship.claremont.edu/hmc_theses/1.

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Thin liquid films driven by surface tension gradients are studied in diverse applications, including the spreading of a droplet and fluid flow in the lung. The nonlinear partial differential equations that govern thin films are difficult to solve analytically, and must be approached through numerical simulations. We describe the development of a numerical solver designed to solve a variety of thin film problems in two dimensions. Validation of the solver includes grid refinement studies and comparison to previous results for thin film problems. In addition, we apply the solver to a model of su
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Erikson, Lars. "Automatic Well Control Simulations." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for petroleumsteknologi og anvendt geofysikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18381.

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Every year kick incidents occur, maybe best remembered by the Macondo blowout in April 2010 resulting in devastating oil spills throughout the Gulf of Mexico. Well control is one of the most important factors in any drilling operation, preventing disastrous blowouts where people and the environment will be affected. The development of new technologies has increased significantly, lowering the risks of blowouts, mostly because of the reliability of blowout preventers. Better hardware systems have been developed and better materials has increased the performance during critical parts of an opera
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Raicevic, Milan. "Simulations of cosmic reionization." Thesis, Durham University, 2010. http://etheses.dur.ac.uk/323/.

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In this thesis we investigate numerically how ionizing photons emitted by stars in galaxies cause the reionization of the Universe, the transition during which most of the gas in the Universe from a mostly neutral, to a highly ionised state it is in today. To this end, we discuss and improve two techniques for the transport of ionising radiation across cosmological volumes, analyse the sources of ionising photons at high redshifts predicted by a semi-analytical galaxy formation model (GALFORM), and combine these to make consistent model of how reionization proceeds. Our improvements to the hyb
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Archer, T. D. "Computer simulations of calcite." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.596141.

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In this dissertation I have created and applied a parametric model for bulk carbonate materials. The new empirical model for carbonates is stable for a wide range of carbonate structures and reproduces experimental results with reasonable accuracy. To study the surface of calcite the ab initio code SIESTA has been used. New implementation has been introduced into the SIESTA code to allow the calculation of effective charges using the modern theory of polarisation. Using these charges the calculation of the long range electrostatic effects, which are removed by the zero electric field boundary
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Sak, Halis. "Efficient Simulations in Finance." Department of Statistics and Mathematics, WU Vienna University of Economics and Business, 2008. http://epub.wu.ac.at/1068/1/document.pdf.

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Measuring the risk of a credit portfolio is a challenge for financial institutions because of the regulations brought by the Basel Committee. In recent years lots of models and state-of-the-art methods, which utilize Monte Carlo simulation, were proposed to solve this problem. In most of the models factors are used to account for the correlations between obligors. We concentrate on the the normal copula model, which assumes multivariate normality of the factors. Computation of value at risk (VaR) and expected shortfall (ES) for realistic credit portfolio models is subtle, since, (i) there is d
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31

Smith, Gregory K. "Simulations of chemical catalysis." Thesis, The University of New Mexico, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3612623.

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<p> This dissertation contains simulations of chemical catalysis in both biological and heterogeneous contexts. A mixture of classical, quantum, and hybrid techniques are applied to explore the energy profiles and compare possible chemical mechanisms both within the context of human and bacterial enzymes, as well as exploring surface reactions on a metal catalyst. A brief summary of each project follows. </p><p> Project 1 - Bacterial Enzyme SpvC </p><p> The newly discovered SpvC effector protein from <i>Salmonella typhimurium </i> interferes with the host immune response by dephosphory
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Hamilton, Angela. "Simulations for Financial Literacy." Master's thesis, University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5235.

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Financially literate consumers are empowered with the knowledge and skills necessary to make sound financial decisions that ensure their long-term economic well-being. Within the context of the range of cognitive, psychological, and social factors that influence consumer behavior, simulations enhance financial literacy by developing consumers' mental models for decision-making. Technical communicators leverage plain language and visual language techniques to communicate complex financial concepts in ways that consumers can relate to and understand. Simulations for financial education and de
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Raveendran, Karthik. "Control of liquid simulations." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53011.

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Over the last decade, advances in fluid simulation and rendering have helped animators synthesize photorealistic shots for movies that would have been virtually impossible to create by manually animating the liquid. Despite the advent of these computational methods, fluid simulation in movie production still involves a large degree of trial and error. In this dissertation, we propose a set of techniques for creating animations of liquids that meet desired artistic criteria without the customary tuning of numerous physical parameters. The basis for our work is the mesh-based representation of
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Jennings, Vincent Louis. "Computational simulations of titanates." Thesis, University of Warwick, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.398737.

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Chappell, Helen Fiona. "Atomistic simulations of hydroxyapatite." Thesis, University of Cambridge, 2007. https://www.repository.cam.ac.uk/handle/1810/290022.

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The ain of this work was to provide a deeper understanding of the electronic and geometrical structures of HA when substituted by various ions considered important in the field of biomaterials. Calculations were carried out using Density Functional Theory, (DFT), on bulk and surface, substituted-HA structures. Particular attention is given to the substation of phosphate ions by silicate ions. Bulk structures are investigated with supercells and the Virtual Crystal Approximation, which simulates low concentrations (up to 2.8 wt%) of silicon in the unit cell. The amount of silicon that can be su
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Nagy, Lesleis. "Parallelisation of micromagnetic simulations." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/20433.

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The field of paleomagnetism attempts to understand in detail the the processes of the Earth by studying naturally occurring magnetic samples. These samples are quite unlike those fabricated in the laboratory. They have irregular shapes; they have been squeezed and stretched, heated and cooled and subjected to oxidation. However micromagnetic modelling allows us to simulate such samples and gain some understanding of how a paleomagnetic signal is acquired and how it is retained. Micromagnetics provides a theory for understanding how the domain structure of a magnetic sample alters subject to wh
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Öqvist, Mona. "Numerical simulations of wear." Licentiate thesis, Luleå tekniska universitet, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26185.

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The objective of this licentiate thesis was to study the effect of tool wear for sheet metal forming tools and how the wear process can be simulated in an efficient manner. Three Papers are appended to this licentiate thesis. Paper A covers the influence of tool geometry in deep drawing. In paper B is the way of calculating with finite element analysis described. The wear of a steel cylinder oscillating against a steel plate was studied experimentally. The worn shape of the cylinder was then compared with a numerical simulation of the shape. Paper C shows how numerical simulations can be used
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Penny, Matthew Thomas. "Simulations of gravitational microlensing." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/simulations-of-gravitational-microlensing(ddc24ee8-c2a6-432a-a168-7d56662a9247).html.

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Gravitational microlensing occurs when a massive lens (typically a star) deflects light from a more distant source, creating two unresolvable images that are magnified. The effect is transient due to the motions of the lens and source, and the changing magnification gives rise to a characteristic lightcurve. If the lensing object is a binary star or planetary system, more images are created and the lightcurve becomes more complicated. Detection of these lightcurve features allows the lens companion's presence to be inferred. Orbital motion of the binary lens can be detected in some microlensin
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Tara, Sylvia. "Computer simulations of acetylcholinesterase /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 1998. http://wwwlib.umi.com/cr/ucsd/fullcit?p9908501.

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Chen, Chi-Shao. "Equatorial entrainment zone simulations." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA237234.

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Thesis (M.S. in Physical Oceanography)--Naval Postgraduate School, June 1990.<br>Thesis Advisor(s): Garwood, Roland W. Second Reader: Chu, Pecheng. "June 1990." Description based on signature page as viewed on October 19, 2009. DTIC Identifier(s): Air water interactions, ocean models, ocean currents, entrainment, ocean circulation, heat flux, wind velocity, mathematical prediction, equatorial regions, theses. Author(s) subject terms: Air-sea interaction, equatorial circulation. Includes bibliographical references (p. 73-75). Also available in print.
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Prière, Céline Poinsot Thierry. "Simulations aux grandes échelles." Toulouse : INP Toulouse, 2005. http://ethesis.inp-toulouse.fr/archive/00000098.

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Ramakrishnan, Siddharth. "Proving Ground Durability Simulations." Thesis, KTH, Maskinkonstruktion (Avd.), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-259664.

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Virtual durability simulations have been explored in the automotive industry to complement physical testing in designing durable vehicles. Simulations are useful to check the validity of the design before even building the prototype of the vehicle. They are also useful in checking the effect of changes in vehicle design to the durability of the vehicle. Buses are designed and tested for durability before they are sold to customers. Bus manufacturers use special test tracks consisting of different kinds of maneuvers/obstacles to test the buses for durability. Proving ground durability test sche
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Beersing-Vasquez, Kiran. "Suturing in Surgical Simulations." Thesis, KTH, Numerisk analys, NA, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-260254.

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The goal of this project is to develop virtual surgical simulation software in order to simulate the suturing and knot tying processes associated with surgical thread. State equations are formulated using Lagrangian mechanics, which is useful for the conservation of energy. Solver methods are developed with theory based in Differential Algebraic Equations (DAEs) which concern governing Ordinary Differential Equations (ODEs) that are constraint with Algebraic Equations (AE). An implicit integration scheme and Newton's method is used to solve the system in each step. Furthermore, a collision res
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Predari, Maria. "Load balancing for parallel coupled simulations." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0369/document.

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Dans le contexte du calcul scientique, l'équilibrage de la charge est un problème crucial qui conditionne la performance des simulations numériques parallèles. L'objectif est de répartir la charge de travail entre un nombre de processeurs donné, afin de minimiser le temps global d'exécution. Une stratégie populaire pour résoudre ce problème consiste à modéliser la simulation à l'aide d'un graphe et à appliquer des algorithmes de partitionnement. En outre, les simulations numériques tendent à se complexifier, notamment en mixant plusieurs codes représentant des physiques différentes ou des éche
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Falcigno, Steven V. "The Simulation Engine, a platform for developing industrial process knowledge-based discrete event simulations." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0009/MQ33370.pdf.

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46

Balasubramanian, Sivaramakrishnan. "A Novel Approach for the Direct Simulation of Subgrid-Scale Physics in Fire Simulations." NCSU, 2010. http://www.lib.ncsu.edu/theses/available/etd-12212009-122246/.

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A Lagrangian framework for computing subgrid-scale combustion physics in Large Eddy Simulations (LES) of fire is formulated and validated. The framework is based on coupling LES formulation, based on the Fire Dynamic Simulator (FDS) with the One-Dimensional Turbulence (ODT) model. The ODT model involves reaction-diffusion and turbulent transport along one-dimensional domains. The one-dimensional domains are attached to the flame brush positions, computed in LES, and are allowed to propagate along its surface. The Lagrangian LES-ODT framework involves various implementations including a) moment
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47

Guesnet, Étienne. "Modélisation du comportement mécanique et thermique des silices nano-architecturées." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAI075/document.

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Les silices nanostructurées sont des matériaux ultra-poreux (plus de 80% de porosité) utilisés pour la confection de Panneaux Isolants sous Vides (PIV). Elles possèdent des propriétés thermiques exceptionnelles, mais de piètres propriétés mécaniques.L’enjeu de cette thèse est d’étudier ces matériaux aux échelles de la particule (quelques nm), de l’agrégat de particules (quelques dizaines de nm) et de l’agglomérat d’agrégats (quelques centaines de nm), afin de mieux comprendre les comportements mécanique et thermique à l’aide de simulations, et de proposer des pistes pour améliorer le compromis
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48

ABDEL-MOMEN, SHERIF SAMIR. "DYNAMIC RESOURCE BALANCING BETWEEN TWO COUPLED SIMULATIONS." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1060893659.

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49

Linke, Gunnar Torsten. "Eigenschaften fluider Vesikeln bei endlichen Temperaturen." Phd thesis, Universität Potsdam, 2005. http://opus.kobv.de/ubp/volltexte/2005/583/.

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In der vorliegenden Arbeit werden die Eigenschaften geschlossener fluider Membranen, sogenannter Vesikeln, bei endlichen Temperaturen untersucht. Dies beinhaltet Betrachtungen zur Form freier Vesikeln, eine Untersuchung des Adhäsionsverhaltens von Vesikeln an planaren Substraten sowie eine Untersuchung der Eigenschaften fluider Vesikeln in eingeschränkten Geometrien. Diese Untersuchungen fanden mit Hilfe von Monte-Carlo-Simulationen einer triangulierten Vesikeloberfläche statt. Die statistischen Eigenschaften der fluktuierenden fluiden Vesikeln wurden zum Teil mittels Freier-Energie-Profile an
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50

Jelinek, Bohumir. "Molecular dynamics simulations of metals." Diss., Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-11072008-130216.

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