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Dissertations / Theses on the topic 'Mathematical model of motion of liquids'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Медведева, Л. В., та И. А. Панкратов. "Моделирование течений мелкой воды средствами пакета Open-FOAM". Thesis, Сумский государственный университет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/65558.

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В работе рассмотрена математическая модель движения жидкости, полученная путём применения усреднённых по вертикали характеристик (так называемых уравнений мелкой воды). Настоящая работа посвящена численному исследованию нестационарных уравнений мелкой воды.

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2

Kelekele, Liloo Didier Joel. "Mathematical model of performance measurement of defined contribution pension funds." University of the Western Cape, 2015. http://hdl.handle.net/11394/4367.

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>Magister Scientiae - MSc<br>The industry of pension funds has become one of the drivers of today’s economic activity by its important volume of contribution in the financial market and by creating wealth. The increasing importance that pension funds have acquired in today’s economy and financial market, raises special attention from investors, financial actors and pundits in the sector. Regarding this economic weight of pension funds, a thorough analysis of the performance of different pension funds plans in order to optimise benefits need to be undertaken. The research explores criteria and

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3

Kang, Joonyun. "Time domain mathematical model for six-degree-of-freedom motion in a wave." Thesis, University of Strathclyde, 2009. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21999.

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In this thesis a novel controller for providing greater flexibility of operation of wind turbines known as the Power Adjusting Controller (PAC) is presented. The controller takes the form of an augmentation to a wind turbine’s full envelope controller, allowing it to be applied to any horizontal axis, pitch regulated, variable speed wind turbine. Conventional wind turbine control seeks to maximise the power output of a wind turbine whilst minimising the loads on the turbine, controlling on the error in generator speed via demands to the blade pitch actuator and generator torque actuator. The P

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4

Despain, Lynnae. "A Mathematical Model of Amoeboid Cell Motion as a Continuous-Time Markov Process." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5671.

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Understanding cell motion facilitates the understanding of many biological processes such as wound healing and cancer growth. Constructing mathematical models that replicate amoeboid cell motion can help us understand and make predictions about real-world cell movement. We review a force-based model of cell motion that considers a cell as a nucleus and several adhesion sites connected to the nucleus by springs. In this model, the cell moves as the adhesion sites attach to and detach from a substrate. This model is then reformulated as a random process that tracks the attachment characteristic

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5

Londani, Mukhethwa. "Numerical Methods for Mathematical Models on Warrant Pricing." University of the Western Cape, 2010. http://hdl.handle.net/11394/8210.

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>Magister Scientiae - MSc<br>Warrant pricing has become very crucial in the present market scenario. See, for example, M. Hanke and K. Potzelberger, Consistent pricing of warrants and traded options, Review Financial Economics 11(1) (2002) 63-77 where the authors indicate that warrants issuance affects the stock price process of the issuing company. This change in the stock price process leads to subsequent changes in the prices of options written on the issuing company's stocks. Another notable work is W.G. Zhang, W.L. Xiao and C.X. He, Equity warrant pricing model under Fractional Brownian m

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6

Sood, Gaurav. "Simulation and control of a hip actuated robotic model for the study of human standing posture." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99794.

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Human stance in quiet mode, relies on feedback from eyes, skin, muscles and the inner ear and the control produced is a combination of strategies which enable a person to stay standing. This thesis presents the simulation and control of a hip actuated robotic model of human standing posture.<br>The first part of the thesis is devoted to recalling basic elements of the human balance system and to describe the balance strategies it uses to maintain an upright stance. Of the strategies presented, we consider the hip strategy which motivated the formulation of a hip actuated robot. An investigatio

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7

Swartzel, Jeffrey M. "Rolling of an Elliptic-Shaped Particle in Two Dimensions: A Mathematical Model." Akron, OH : University of Akron, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1240522472.

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Thesis (M.S.)--University of Akron, Dept. of Mathematics, 2009.<br>"May, 2009." Title from electronic thesis title page (viewed 7/28/2009) Advisor, Dmitry Golovaty; Faculty Readers, Gerald Young, Patrick Wilber; Department Chair, Joseph Wilder; Dean of the College, Chand Midha; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.

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8

Merrifield, Alistair James. "An Investigation Of Mathematical Models For Animal Group Movement, Using Classical And Statistical Approaches." Thesis, The University of Sydney, 2006. http://hdl.handle.net/2123/1132.

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Collective actions of large animal groups result in elaborate behaviour, whose nature can be breathtaking in their complexity. Social organisation is the key to the origin of this behaviour and the mechanisms by which this organisation occurs are of particular interest. In this thesis, these mechanisms of social interactions and their consequences for group-level behaviour are explored. Social interactions amongst individuals are based on simple rules of attraction, alignment and orientation amongst neighbouring individuals. As part of this study, we will be interested in data that takes the

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9

Merrifield, Alistair James. "An Investigation Of Mathematical Models For Animal Group Movement, Using Classical And Statistical Approaches." University of Sydney, 2006. http://hdl.handle.net/2123/1132.

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Doctor of Philosophy<br>Collective actions of large animal groups result in elaborate behaviour, whose nature can be breathtaking in their complexity. Social organisation is the key to the origin of this behaviour and the mechanisms by which this organisation occurs are of particular interest. In this thesis, these mechanisms of social interactions and their consequences for group-level behaviour are explored. Social interactions amongst individuals are based on simple rules of attraction, alignment and orientation amongst neighbouring individuals. As part of this study, we will be intereste

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10

Vilches, Karina. "Study of mathematical models of phenotype evolution and motion of cell populations." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066117/document.

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Cette thèse porte sur deux équations aux dérivées partielles qui modélisent les phénomènes biologiques de l'évolution génétique et mouvement dans l'espace d'une population de cellules. Le premier problème (Partie I, Chapitre 1), il est sur l'évolution phénotypique d'une population de cellules, nous avons réussi à démontrer que la limite asymptotique des solutions de l'équation différentielle partielle proposée est une masse de Dirac. Pour modéliser ce phénomène, nous avons étudié une équation de transport sur le mouvement génétique, y compris des éléments classiques de l'écologie mathématique

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11

Kozhushko, A. P., and K. Riezva. "Comparison a running smoothness of a wheeled tractor with a semitrailer tank or unit while driving on asphalt-concrete surface." Thesis, Scientific Route, Estonia, 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/46135.

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12

Walljee, Raabia. "The Levy-LIBOR model with default risk." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96957.

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Thesis (MSc)--Stellenbosch University, 2015<br>ENGLISH ABSTRACT : In recent years, the use of Lévy processes as a modelling tool has come to be viewed more favourably than the use of the classical Brownian motion setup. The reason for this is that these processes provide more flexibility and also capture more of the ’real world’ dynamics of the model. Hence the use of Lévy processes for financial modelling is a motivating factor behind this research presentation. As a starting point a framework for the LIBOR market model with dynamics driven by a Lévy process instead of the classical Brownian

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13

Gilani, Muhaned. "Development Of A Dynamic Flight Model Of A Jet Trainer Aircraft." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/2/12608298/index.pdf.

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A dynamic flight model of a jet trainer aircraft is developed in MATLAB-SIMULINK. Using a six degree of freedom mathematical model, non-linear simulation is used to observe the longitudinal and lateral-directional motions of the aircraft following a pilot input. The mathematical model is in state-space form and uses aircraft stability and control derivatives calculated from the aircraft geometric and aerodynamic characteristics. The simulation takes the changes in speed and altitude into consideration due to pilot input and demonstrates the non-linearity of the aircraft motion. The results fro

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14

Jiang, Min. "Computation of Reynolds stresses in axisymmetric vortices and jets using a second order closure model." Thesis, Virginia Tech, 1994. http://hdl.handle.net/10919/42135.

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Donaldson's single-point second-order model [13] is used to close the Reynolds stress transport equations in cylindrical coordinates. A reduced set of equations are then solved for the decay of axisymmetric vortices and jets. A self-similar solution to the axisymmetric vortices is obtained numerically. The characteristics of the mean flow variables as well as the Reynolds stresses in this solution are discussed. Comparisons of the current results with Donaldson[13J and Donaldson and Sullivan[16] are also presented. <p>The results show that the vortex core is free from turbulent shear stresses.

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15

Hickey, Joseph. "Simulating the electric field mediated motion of ions and molecules in diverse matrices." Scholar Commons, 2005. http://scholarcommons.usf.edu/etd/2924.

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Electroporation is a methodology for the introduction of drugs and genes into cells. This technique works by reducing the exclusionary nature of the cell membrane [125, 129, 186, 189]. Electroporation has successfully been used in electrochemotherapy and electrogenetherapy [57, 68, 86, 87, 110, 112, 131]. The two major components of electroporation are an induced transmembrane potential and the motion of the deliverable through a compromised cell membrane into the target cell [38, 55, 62, 114, 131]. These two components are both dependent on the electrophoretic motion of charged species in an

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16

Rosen, Mary Ellen Furner. "Mean Square Displacement for a Discrete Centroid Model of Cell Motion and a Mathematical Analysis of Focal Adhesion Lifetimes and Their Effect on Cell Motility." BYU ScholarsArchive, 2021. https://scholarsarchive.byu.edu/etd/8780.

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One of the characteristics that distinguishes living things from non-living things is motility. On the cellular level, the motility or non-motility of different types of cells can be life building, life-saving or life-threatening. A thorough study of cell motion is needed to help understand the underlying mechanisms that enhance or prohibit cell motion. We introduce a discrete centroid model of cell motion in the context of a generalized random walk. We find an approximation for the theoretical mean square displacement (MSD) that uses a subset of the state space to estimate the MSD for the ent

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17

Aloi, Daniel Nicholas. "Development and verification of a mathematical model to investigate the effects of earth-surface-based multipath reflections at a differential global positioning system ground reference site." Ohio : Ohio University, 1999. http://www.ohiolink.edu/etd/view.cgi?ohiou1175264170.

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18

Благая, Людмила Володимирівна, та Liudmyla V. Blahaia. "Модель функціонування системи «пілот–літак» при управлінні рухом на етапі посадки". Thesis, Національний авіаційний університет, 2021. https://er.nau.edu.ua/handle/NAU/52288.

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Розроблено стохастичну математичну модель діяльності ергатичної системи «пілот-літак» на етапі заходу на посадку як системи масового обслуговування, яка об’єднує модельні уявлення станів людини-оператора і технічної частини системи в єдину модель. Результати розробленого програмного забезпечення показали, що параметри, отримані за моделлю, відповідають параметрам польоту, отриманим з системи реєстрації параметрів літака на режимі заходу на посадку. Результати удосконалення математичної моделі «Узагальнена робоча характеристика людини-оператора» дали змогу досліджувати системні характеристики

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19

Igonin, Maksim. "Instabilités hydrodynamiques des liquides magnétiques miscibles et non miscibles dans une cellule de Hele-Shaw." Phd thesis, Université Paris-Diderot - Paris VII, 2004. http://tel.archives-ouvertes.fr/tel-00007716.

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Ce manuscrit décrit analytiquement et numériquement les instabilités d'un fluide magnétique dans une cellule de Hele-Shaw. On considère l'interface entre un fluide magnétique et un autre fluide non magnétique, miscible ou non, soumise à un champ magnétique homogène normal à la cellule ou à l'interface. Le champ démagnétisant est inhomogène à cette interface et génère un mouvement convectif des fluides. Dans la première partie, nous avons utilisé une analyse linéaire de stabilité entre deux liquides miscibles pour une distribution donnée de concentration à l'interface. Les résultats s'appliquen

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20

Kromer, Valérie. "Analyse des forces musculaires au cours de la marche : approche en corps rigide et simulation en mécanismes plans flexibles par éléments finis." Vandoeuvre-les-Nancy, INPL, 1993. http://www.theses.fr/1993INPL040N.

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Ce travail s'inscrit dans le projet européen calies, dont l'objectif est de rétablir la locomotion de patients paraplégiques par stimulation électrique directe de leurs muscles. La première partie porte sur l'analyse et l'évaluation des forces musculaires agissant au cours de la marche normale. Le modèle musculaire retenu est celui de Hill. Les moments aux articulations sont obtenus par une étude dynamique inverse, à partir d'une description cinématique du mouvement. Le problème de synergie musculaire est résolu selon deux méthodes d'optimisation statique, la première consistant à minimiser l'

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21

Martino, Drew J. "Evaluation of Electrochemical Storage Systems for Higher Efficiency and Energy Density." Digital WPI, 2017. https://digitalcommons.wpi.edu/etd-dissertations/470.

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Lack of energy storage is a key issue in the development of renewable energy sources. Most renewables, especially solar and wind, when used alone, cannot sustain a reliably constant power output over an extended period of time. These sources generally generate variable amounts of power intermittently, therefore, an efficient electrical energy storage (EES) method is required to better temporally balance power generation to power consumption. One of the more promising methods of electrical energy storage is the unitized regenerative fuel cell (UFRC.) UFRCs are fuel cells that can operate in a c

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22

Li, Yunming. "Machine vision algorithms for mining equipment automation." Thesis, Queensland University of Technology, 2000.

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23

"Segmentation based variational model for accurate optical flow estimation." 2009. http://library.cuhk.edu.hk/record=b5894018.

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Chen, Jianing.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2009.<br>Includes bibliographical references (leaves 47-54).<br>Abstract also in Chinese.<br>Chapter 1 --- Introduction --- p.1<br>Chapter 1.1 --- Background --- p.1<br>Chapter 1.2 --- Related Work --- p.3<br>Chapter 1.3 --- Thesis Organization --- p.5<br>Chapter 2 --- Review on Optical Flow Estimation --- p.6<br>Chapter 2.1 --- Variational Model --- p.6<br>Chapter 2.1.1 --- Basic Assumptions and Constraints --- p.6<br>Chapter 2.1.2 --- More General Energy Functional --- p.9<br>Chapter 2.2 --- Discontinuity Preserving

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24

Peterson, Delvin E. "Reduced order multi-legged mathematical model of cockroach locomotion on inclines." Thesis, 2011. http://hdl.handle.net/1957/27295.

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While the locomotion performance of legged robots over flat terrain or known obstacles has improved over the past few decades, they have yet to equal the performance of their animal counterparts over variable terrain. This work analyzes a multi-legged reduced order model of cockroach locomotion on variable slopes which will be used as an inspiration for a future sprawled posture legged robot. The cockroach is modeled as a point mass, and each leg of the cockroach is modeled as a massless, tangentially rigid, linearly elastic spring attached at the center of mass. All of the springs are actuate

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25

Mugisha, Stella. "Applied mathematical modelling with new parameters and applications to some real life problems." Thesis, 2018. http://hdl.handle.net/10500/24973.

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Some Epidemic models with fractional derivatives were proved to be well-defined, well-posed and more accurate [34, 51, 116], compared to models with the conventional derivative. An Ebola epidemic model with non-linear transmission is fully analyzed. The model is expressed with the conventional time derivative with a new parameter included, which happens to be fractional (that derivative is called the 􀀀derivative). We proved that the model is well-de ned and well-posed. Moreover, conditions for boundedness and dissipativity of the trajectories are established. Exploiting the generalized Routh

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26

Ferreira, Paulo Fernando Marques. "Evaluating investment opportunities under different model dynamics: Some managerial insights." Master's thesis, 2012. http://hdl.handle.net/10071/6397.

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The Net Present Value is the most well known measure of project valuation for managers. However it requires an investment decision made in the moment as well as the cash outflow of the investment. However, a manager has different levels of flexibility in the exercise of his functions that the classic Net Present Value valuation does not take in account. An investment can be delayed to a pre-committed date, can have the decision delayed by a certain or an endlessly period of time, and can be reverted. Despite not applicable to all parameters, the numerical analysis made in this thesis has a pre

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