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Rozprawy doktorskie na temat „Stability of Ankle”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Leardini, Alberto. "Geometry and mechanics of the human ankle complex, and ankle prosthesis design." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343530.

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Hahn, Hayley M. "The effect of sex differences and hormone fluctuation on ankle stability and function /." Connect to full text in OhioLINK ETD Center, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=toledo1241454458.

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Thesis (M.S.)--University of Toledo, 2009.<br>Typescript. "Submitted as partial fulfillment of the requirements for The Masters of Science degree in Exercise Science." "A thesis entitled"--at head of title. Bibliography: leaves 51-54.

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Miniello, Susan E. "Does ankle cryotherapy affect dynamic stability of healthy subjects?" [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0001078.

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Martin, Raquel Elise. "Effects of Ankle Support on Time To Stabilization of Subjects with Stable Ankles." VCU Scholars Compass, 2007. http://scholarscompass.vcu.edu/etd/1070.

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The purpose of this study was to determine if prophylactic ankle tape and/or ankle braces improve dynamic stability in TTS measure. All subjects were healthy and had no prior history of ankle injuries. Data collection consisted of each subject performing a single leg jump-landing with ankle tape, ankle brace, combination of the two, and control (no tape or brace) conditions. Dynamic stability was assessed with time to stabilization force plate measure. Significant plane by ankle tape interaction (p=0.045) was found. No significant plane by ankle tape by ankle brace interaction (p=0.637),

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5

Nortunen, S. (Simo). "Stability assessment of isolated lateral malleolar supination-external rotation-type ankle fractures." Doctoral thesis, Oulun yliopisto, 2018. http://urn.fi/urn:isbn:9789526217932.

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Abstract Isolated lateral malleolar supination-external rotation (SER) -type ankle fractures without incongruity on the standard radiographs can be either stable or unstable depending on the status of the deep deltoid ligament. Neither clinical signs of injury on the medial aspect of the ankle nor the displacement of fibular fracture on mortise radiographs seem to predict stability. Therefore, stress testing has been adopted in clinical use. No “gold standard” method exists but the manual external rotation (ER) stress test is the most extensively studied. The ER stress test has some disadvanta

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6

Hahn, Hayley. "The Effect of Sex Differences and Hormone Fluctuation on Ankle Stability and Function." University of Toledo / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1241454458.

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Gladish, Jonathan Randolph. "Recovery of Balance and Lower Extremity Joint Contributions in Total Ankle Arthroplasty Patients." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78029.

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Ankle arthritis is a debilitating condition that causes severe pain and decreased function in the affected limb on the order of end-stage hip arthrosis, end-stage kidney disease, and congestive heart failure. Total ankle replacement is a viable surgical option for treating end-stage ankle arthritis, but few have studied its effects on balance over time. Therefore, the purpose of this study was to test the accuracy of a single-marker method of tracking center of mass, evaluate center of pressure measurements in total ankle replacement patients, and analyze lower extremity joint contributions ov

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8

Pitz, Mary Katlyn. "Compression-aided stability of orthopaedic devices." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39487.

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Repair and remodeling of bone during healing and fusion require a combination of bone resorption and formation to successfully restore the bone to its previous strength. The healing process is highly responsive to the mechanical conditions of the construct, where excessive loading can cause high strains that delay healing, but moderate loading can be beneficial. Maintaining compression at the site of fracture can benefit healing by maintaining bone congruency and increasing the stability of the bone-implant construct to prevent excessive shifting. For these reasons, compressive mechanisms a

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9

Raycraft, Elizabeth I. "Dynamic postural stability during gait initiation in individuals with chronic ankle instability the influence of walking velocity /." Click here to access thesis, 2009. http://www.georgiasouthern.edu/etd/archive/spring2009/elizabeth_i_raycraft/raycraft_elizabeth_i_200901_ms.pdf.

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Thesis (Ed.D.)--Georgia Southern University, 2009.<br>"A thesis submitted to the Graduate Faculty of Georgia Southern University in partial fulfillment of the requirements for the degree Master of Science." Directed by Thomas Buckley. ETD. Includes bibliographical references (p. 22-25) and appendices.

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Tolson, Jennifer. "Influence of direction on stepping parameters and postural stability in individuals with chronic the influence of walking velocity /." Click here to access thesis, 2009. http://www.georgiasouthern.edu/etd/archive/spring2009/jennifer_m_tolson/tolson_jennifer_m_200901_ms.pdf.

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Thesis (Ed.D.)--Georgia Southern University, 2009.<br>"A thesis submitted to the Graduate Faculty of Georgia Southern University in partial fulfillment of the requirements for the degree Master of Science." Directed by Thomas Buckley. ETD. Includes bibliographical references (p. 27-30) and appendices.

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11

Hirono, Tetsuya. "Relationship between ankle plantar flexor force steadiness and postural stability on stable and unstable platforms." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263583.

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12

Hartwich, Kathleen, Alejandro Lorente Gomez, Jaroslaw Pyrc, Radosław Gut, Stefan Rammelt, and René Grass. "Biomechanical Analysis of Stability of Posterior Antiglide Plating in Osteoporotic Pronation Abduction Ankle Fracture Model With Posterior Tibial Fragment." Sage, 2017. https://tud.qucosa.de/id/qucosa%3A35489.

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Background: We performed a biomechanical comparison of 2 methods for operative stabilization of pronation-abduction stage III ankle fractures; group 1: Anterior-posterior lag screws fixing the posterior tibial fragment and lateral fibula plating (LSLFP) versus group 2: locked plate fixation of the posterior tibial fragment and posterior antiglide plate fixation of the fibula (LPFP). Methods: Seven pairs of fresh-frozen osteoligamentous lower leg specimens (2 male, and 5 female donors) were used for the biomechanical testing. Bone mineral density (BMD) of each specimen was assessed by means of

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13

Timms, Stephen Allan. "The 3D kinematics of the single leg flat and decline squat." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/53119/1/Stephen_Timms_Thesis.pdf.

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Background: Pre-participation screening is commonly used to measure and assess potential intrinsic injury risk. The single leg squat is one such clinical screening measure used to assess lumbopelvic stability and associated intrinsic injury risk. With the addition of a decline board, the single leg decline squat (SLDS) has been shown to reduce ankle dorsiflexion restrictions and allowed greater sagittal plane movement of the hip and knee. On this basis, the SLDS has been employed in the Cricket Australia physiotherapy screening protocols as a measure of lumbopelvic control in the place of the

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14

Popelář, Vojtěch. "Vliv kompenzace kabelových sítí na stabilitu blízkých zdrojů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220691.

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This thesis deals with the infulence of compensation cabel network on the stability of nearby power source. This issue is topical with the increase in the ratio of cable networks 110 kV in large cities. The work examines the theoretical concept of stability and factors that affect it. Mainly discusses the stability angle rotor of a synchronous machina. The practical part is performed in MODES software, that performs dynamic simulation of the behavior of the model. In this case, it will be behavior of synchronous machine during short-circuit in network at different values of compensation of thi

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15

Soares, Alex Sandra Oliveira de Cerqueira. "Estabilidade articular: abordagem biomecânica." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/39/39132/tde-18082015-081608/.

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A instabilidade articular é responsável pelo desenvolvimento de lesões degenerativas incapacitantes que comprometem o desempenho funcional. Compreender os processos desenvolvidos para estabilização dinâmica articular é um desafio para pesquisadores das mais diversas áreas. O presente estudo propõe o uso da abordagem Biomecânica para reconhecer os mecanismos relacionadas ao processo de estabilização dinâmica articular, por meio de três diferentes condições experimentais. No experimento 1 foi analisada a Força de Reação do Solo (FRS) e a cinemática 3-D no andar, correr e saltar de portadores (n=

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16

Gromotovič, Ivan. "Modelování a simulace elektromechanických přechodných jevů v elektrizační soustavě." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413126.

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This work deals with the issue of evaluating transient stability in the simulation program PSCAD. Factors affecting transient stability were analyzed on a single-machine SMIB model. The results of this analysis confirmed the theoretical assumption that for more accurate results of the analysis of transient stability, it is necessary to consider the mentioned factors. A short circuit was simulated on the IEEE9 test model and subsequently the load angles of the generators were monitored using various methods. The method of reference of the largest generator in the system proved to be a more suit

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17

KIM, BONGSU. "LONG-TERM STABILITY OF PLASMA OXIDIZED POLYDIMETHYLSILOXANE SURFACES." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1100893247.

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18

Niederberger, Ana Liesel Guggiari. "Stability of nonextraction Class II malocclusion treatment with elastics." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/25/25144/tde-31082018-183637/.

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The objective of this study was to evaluate the long-term stability after successful nonextraction Class II malocclusion treatment with elastics. A sample of 43 patients with Class II malocclusion was divided into two groups. The elastic group (EG) consisted of 20 patients who were treated with fixed appliances associated with Class II elastics. The headgear group (HG), consisted of 23 patients treated with fixed appliances and extraoral headgear. Pre-, post-treatment, and long-term post-treatment lateral radiographs and dental casts were evaluated. T-tests were used to compare the treatment c

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19

Ko, Joon Soo. "Analysis of the dynamic stability derivatives for high angle of attack aircraft." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/52300.

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Modern, high performance aircraft are required to be able to fly and be controlled over a wide variety of flight conditions. In order to predict the aircraft behavior and control requirements over the entire flight regime it is necessary to have a proper aerodynamic model. Flight conditions at high angles of attack lead to separated flows making the aerodynamic model more difficult to obtain. In this research wind tunnel experiments are performed on an F-5 air-craft model at high angles of attack, with small oscillations about the body oriented roll axis. In addition the free stream environmen

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20

Ravi, R. "High Angle of Attack Forebody Flow Physics and Design Emphasizing Directional Stability." Diss., This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-01252008-163458/.

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Olds, Shana D. "Modeling and LQR Control of a Two-Dimensional Airfoil." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36668.

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In this paper we develop a mathematical model of a two-dimensional aeroelastic airfoil. This model is used to design a flutter suppression controller. Flutter is a vibration in a wing caused by airstream energy being absorbed by the lifting surface. Flutter increases with increasing speed. For simplicity, we consider a flat plate in a two-dimensional flow. The model is developed in the frequency domain and then transformed into the time domain. The uncontrolled model is numerically simulated using MATLAB. Linear Quadratic Regulator (LQR) theory is used to design a state feedback controller. Th

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22

Nowak, Sara Alice 1982. "Investigating the angle or response and maximum stability of a cohesive granular pile." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/32757.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2004.<br>Includes bibliographical references (p. 45-46).<br>In this thesis, I investigate the static and dynamic properties of a granular heap made cohesive by an interstitial fluid. I present the results of experimental work measuring the maximum angle of stability and the angle of repose of such a pile in a rotating drum geometry. I discuss existing models for the stability of a cohesive granular pile and present a new model that predicts the maximum angle of stability from the pile's geometry and from the cohesive force

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23

Azimoh, Leonard Chukwuma. "Investigation into voltage and angle stability of a hybrid HVAC-HVDC power network." Master's thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/17588.

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This study investigates the power stability problems of HVDC and VSC-HVDC interactions on their hybrid networks with HV AC link, with the intention of bringing out their weaknesses and strengths. The knowledge of this will assist network planners to be informed on ways of improving the efficiency and quality of power systems network. The simulations for this study was done using DIgSILENT Powerfactory software version 14.0.515. This study encapsulates the three major stability problems affecting power systems network, namely, the voltage stability, transient stability and small signal stabilit

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Silva, Vinicius Laranjeira Barbosa da. "Long-term stability of surgical-orthodontic open bite treatment: Le Fort I versus 4-piece segmental Le Fort I osteotomy." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/25/25144/tde-19072018-110627/.

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Introduction: This vertical malocclusion has the potential of causing functional and esthetic impairment, impacting patients´ quality of life negatively. The long-term stability of anterior open bite surgical-orthodontic treatment is an important and controversial issue. A variety of factors such as surgery type, surgery fixation, and the anteroposterior discrepancy is related to and can influence long-term overbite stability. The controversy of stability arises in the inherent difficulty of collecting a homogeneous sample, with considerable sample size and adequate long-term followup, leading

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Chmatil, Ľuboš. "Stabilita charakteristiky odstředivého čerpadla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-228953.

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This thesis includes the theoretical part explaining problematic of centrifugal pumps, Y(Q) characteristics of these centrifugal pumps and stability of these characteristics, ways and conditions for stabilisation and adaptations heading to stabilisation.

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Kosovari, Fatmir. "Appropriate standing-leaning backward angle for healthier posture while working in front of the computer." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-15061.

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Health problems associated with computer usage have become more common in recent decades. There are many people who sit or stand still for a long time in the wrong posture while working in front of the computers. There is a lot of research showing that too sedentary sitting and standing causes health problems. Therefore there are many attempts to solve the problems by designing different ergonomic workstations. Except for workstations for sitting or standing, there are also attempts to design workstations for standing-leaning-backward posture. Since there standing-leaning-backward posture duri

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Štěpánek, Roman. "Studium substrukturních změn ultrajemnozrnných Mg-slitin při cyklickém zatěžování a teplotní expozici." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-263403.

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This thesis deals with complex analysis of fine-grained magnesium alloy AZ91 prepared by ECAP process. Mechanical properties of investigated alloy in different states at various external conditions are compared. The structure of this material is inherently unstable therefore changes on microstructural and sub-microstructural level occur during thermal exposure and/or mechanical loading. These changes are analysed and quantified for investigated alloy in selected states in this thesis.

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Shukla, Srivats. "Hierarchical Decentralized Control for Enhanced Stability of Large-Scale Power Systems." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/84224.

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Due to the ever-increasing penetration of distributed generation units connected to the power distribution system, electric power systems, worldwide, are undergoing a paradigm shift with regards to system monitoring, operation and control. We envision that with the emergence of `active' distribution systems consisting of `prosumers' and localized energy markets, decentralized control methods in power systems are gaining a growing attention among power researchers. Traditionally, two main types of control schemes have been implemented in power systems: (a) wide-area monitoring based centralized

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29

Huang, Xixi. "Influence des particules fines sur la stabilité d'un milieu granulaire." Phd thesis, Ecole Centrale de Lyon, 2013. http://tel.archives-ouvertes.fr/tel-00963654.

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L'objectif de ce travail est de comprendre l'influence des particules très fines sur le phénomène de ré-agglomération lors du broyage. Des billes de verre de taille 0 à 20 µm avec un pourcentage massique variant entre 0 à 1% sont ajoutées dans un tas granulaire de billes de verre de 200 à 300 µm dans un tambour tournant cylindrique de diamètre et longueur 10 cm. La présence des particules fines montre un effet ambivalent sur la stabilité du tas granulaire. Nous avons établi un diagramme de stabilité du milieu granulaire en fonction de la concentration de particules fines et cherché à quantifie

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Overjordet, Amund Strømnes. "Synthetic Inertia from Wind Farms - Impacts on Rotor Angle Stability in Existing Synchronous Generators." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-26765.

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As the share of wind power in the power system rises, synchronous generators in traditional power plants are taken out of the grid and replaced by a large number of wind turbines. Most modern wind turbines utilize a power electronic interface between the generator and grid to allow variable speed operation of the turbine. By introducing the power electronic interface the wind turbine do not contribute to the rotational mass of the system or the frequency control. When the share of wind power becomes significant, the primary frequency response are influenced and the activation of primary reserv

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31

Caldas, Waleska Trovisco. "Relationship between malocclusion severity and treatment stability in Class II nonextraction treatment." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/25/25144/tde-19072018-144344/.

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Introduction: When planning Class II malocclusion treatment it is importat to consider the magnitude of the anteroposterior discrepancy, the treatment time, the amount of patient compliance needed and also the long-term stability of the results obtained. The aim of this study was to evaluate the Class II malocclusion nonextraction treatment stability, according to the initial anteroposterior discrepancy severity. Methods: Two groups of patients were selected according to the initial malocclusion severity. The Half-cusp Class II Group comprised 30 patients (16 boys, 14 girls) with an initial me

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32

Lanka, Gopi Krishna. "Stability of the Mandible–Strut Plate Complex in Isolated Angle Fractures: A Finite Element Study." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535382405124984.

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Oyedokun, David Temitope. "Power flow and rotor angle stability studies of HVAC-HVDC power system interconnections using DigSILENT." Master's thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/12367.

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Includes bibliographical references (leaves 143-147).<br>The backbone of all industrialised nations is the success of the power sector, which involves an efficient, reliable and secure means of power generation, transmission and distribution. Industrial growth and urbanisation have together endlessly stimulated electrical engineers to ensure that the electrical power needs of the society are met.

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Ehlers, Hendrik Petrus. "Lag screw effect on the biomechanical torsion stability in the I.S.I monocortical mandible angle system." Diss., University of Pretoria, 2010. http://hdl.handle.net/2263/30368.

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In a recent in vitro biomechanical stability study by F.J. Jacobs, a unique, patented inclined screw insertion (I.S.I.) mandibular angle, intra-oral trauma-plate was evaluated for torsion and compression stability and compared to conventional plating of simulated angle fractures in polyurethane mandibular replicas. This in vitro comparative pilot study is an extension of the above-mentioned study. Similar I.S.I. mini-plates with 45º inclined screw holes in quadrant 3 (Fig 1), were used but in the one sample 13mm-long lag screws were used to transect the fracture lines where in the other group

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35

Spath, Antonia. "Stability of fertility preferences and intentions : A new angle on studying fertility behavior in Germany." Thesis, Stockholms universitet, Sociologiska institutionen, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-162189.

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Prevailing low fertility rates in several European states, such as Germany, have been studied widely in recent years. Findings include discrepancies between fertility preference and actual family size as well as between fertility intentions and fertility behavior; an ‘unmet need’ for children found on the individual and the societal level. Fertility preference is specified as the individual ideal number of children, and fertility intentions as the long- or short-term plans to have a child. Apart from investigating the rates of realization, these measures have been understudied. The objective o

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Edrah, Mohamed Faraj. "Impacts of high penetration of DFIG wind turbines on rotor angle stability of power systems." Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28490.

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This thesis investigates the effects of increased penetration levels of DFIG based wind turbines on rotor angle stability of power systems and how these impacts could be mitigated. The main outcome of this research is the comprehensive assessment of the stability improvements that can be achieved through a novel cost-effective control approach using existing DFIG equipments. A control strategy for both the rotor-side converter (RSC) and grid-side converter (GSC) of the DFIG is proposed to mitigate DFIGs impacts on the system stability. DFIG-GSC is utilised as a static synchronous compensator (

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37

Molina, Diogenes. "Intelligent control and system aggregation techniques for improving rotor-angle stability of large-scale power systems." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50291.

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A variety of factors such as increasing electrical energy demand, slow expansion of transmission infrastructures, and electric energy market deregulation, are forcing utilities and system operators to operate power systems closer to their design limits. Operating under stressed regimes can have a detrimental effect on the rotor-angle stability of the system. This stability reduction is often reflected by the emergence or worsening of poorly damped low-frequency electromechanical oscillations. Without appropriate measures these can lead to costly blackouts. To guarantee system security, operato

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38

Schliffke, Philipp [Verfasser], and Anke [Akademischer Betreuer] Gerber. "Essays on the Evolution, Stability, and Heterogeneity of Social Preferences / Philipp Schliffke. Betreuer: Anke Gerber." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2012. http://d-nb.info/1030365318/34.

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Schliffke, Philipp Verfasser], and Anke [Akademischer Betreuer] [Gerber. "Essays on the Evolution, Stability, and Heterogeneity of Social Preferences / Philipp Schliffke. Betreuer: Anke Gerber." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2012. http://nbn-resolving.de/urn:nbn:de:gbv:18-59009.

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Pavlow, Sarah Stanley. "Effect of early treatment on stability of occlusion in patients with a class ii malocclusion." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0010440.

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Thesis (M.S.)--University of Florida, 2005.<br>Typescript. Title from title page of source document. Document formatted into pages; contains 30 pages. Includes Vita. Includes bibliographical references.

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41

Fonçatti, Camilla Fiedler. "Long-term stability of Class II division 1 treatment with the MARA combined with fixed appliances." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/25/25144/tde-19072018-105455/.

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Introduction: Successful treatment of class II Division 1 malocclusion is also implied to the long-term stability of treatment changes and many are the factors that can influence that. Objective: This research aimed to evaluate the long-term stability of the cephalometric changes obtained during Class II malocclusion correction with the MARA (Mandibular Anterior Repositioning Appliance) associated with fixed appliances. Methods: The treatment group comprised 12 patients who were evaluated at three stages: pretreatment (T1), posttreatment (T2) and long-term posttreatment (T3). The mean initial

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Engström, Staffan. "Wind Farms Influence on Stability in an area with High Concentration of Hydropower Plants." Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-158447.

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The number of large-scale wind farms integrated to the power system in Sweden is increasing. Two generator concepts that are widely used are Doubly-Fed Induction Generators (DFIG) and Full Power Converters (FPC). The study is of a quantitative character and the aim of the Master thesis is to compare DFIG-models with FPC-models integrated in an area with high concentration of hydropower. Then it is possible to examine how the dynamics in the power system change depending on the selection of technology (DFIG or FPC) when connecting a wind farm. The power system is simulated during a summer night

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Bayar, Kerem. "Development of a Vehicle Stability Control Strategy for a Hybrid Electric Vehicle Equipped With Axle Motors." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1305990434.

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Iftakhar, Mohammad M. "Thevenin Equivalent Circuit Estimation and Application for Power System Monitoring and Protection." UKnowledge, 2008. http://uknowledge.uky.edu/gradschool_theses/583.

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The Estimation of Thevenin Equivalent Parameters is useful for System Monitoring and Protection. We studied a method for estimating the Thevenin equivalent circuits. We then studied two applications including voltage stability and fault location. A study of the concepts of Voltage Stability is done in the initial part of this thesis. A Six Bus Power System Model was simulated using MATLAB SIMULINK®. Subsequently, the Thevenin Parameters were calculated. The results were then used for two purposes, to calculate the Maximum Power that can be delivered and for Fault Location.

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Reynolds, Nicholas A. "Behavior and design of concentrically loaded duplex stainless steel single equal-leg angle struts." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49074.

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Stainless steel has garnered attention as an alternative structural material to conventional carbon steel due to its corrosion resistance properties and aesthetic appearance. Of interest are single angles, which are frequently used in trusses, transmission towers, and as bracing diaphragms. When subjected to compression, knowledge concerning the behavior, analysis, and design of stainless steel single angles is very limited. This thesis addresses the behavior of duplex stainless steel single equal-leg angles subject to concentric compressive loading. Two complementary approaches are used

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Salemi, Leonardo da Costa, and Leonardo da Costa Salemi. "Numerical Investigation of Hypersonic Conical Boundary-Layer Stability Including High-Enthalpy and Three-Dimensional Effects." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/621854.

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The spatial stability of hypersonic conical boundary layers is investigated utilizing different numerical techniques. First, the development and verification of a Linearized Compressible Navier-Stokes solver (LinCS) is presented, followed by an investigation of different effects that affect the stability of the flow in free-flight/ground tests, such as: high-enthalpy effects, wall-temperature ratio, and three-dimensionality (i.e. angle-of-attack). A temporally/spatially high-order of accuracy parallelized Linearized Compressible Navier-Stokes solver in disturbance formulation was developed, v

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Majumder, Ritwik. "Modeling, stability analysis and control of microgrid." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/37670/1/Ritwik_Majumder_Thesis.pdf.

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With the increase in the level of global warming, renewable energy based distributed generators (DGs) will increasingly play a dominant role in electricity production. Distributed generation based on solar energy (photovoltaic and solar thermal), wind, biomass, mini-hydro along with use of fuel cells and micro turbines will gain considerable momentum in the near future. A microgrid consists of clusters of load and distributed generators that operate as a single controllable system. The interconnection of the DG to the utility/grid through power electronic converters has raised concern about sa

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De, Oliveira Neto Pedro Jose. "An Investigation of Unsteady Aerodynamic Multi-axis State-Space Formulations as a Tool for Wing Rock Representation." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/29600.

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The objective of the present research is to investigate unsteady aerodynamic models with state equation representations that are valid up to the high angle of attack regime with the purpose of evaluating them as computationally affordable models that can be used in conjunction with the equations of motion to simulate wing rock. The unsteady aerodynamic models with state equation representations investigated are functional approaches to modeling aerodynamic phenomena, not directly derived from the physical principles of the problem. They are thought to have advantages with respect to the physic

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Hasan, Rabeea [Verfasser], and Jörg [Akademischer Betreuer] Lisson. "Untersuchung zur Stabilität nach Umstellungsosteotomie bei Patienten mit Angle-Klasse III / Rabeea Hasan ; Betreuer: Jörg Lisson." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2018. http://d-nb.info/1162892293/34.

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Hasan, Rabeea [Verfasser], and Jörg Alexander [Akademischer Betreuer] Lisson. "Untersuchung zur Stabilität nach Umstellungsosteotomie bei Patienten mit Angle-Klasse III / Rabeea Hasan ; Betreuer: Jörg Lisson." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:291-scidok-ds-272835.

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