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Dissertations / Theses on the topic 'QTc parameters'

Author: Grafiati

Published: 2 June 2025

Last updated: 19 July 2025

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1

Longa-Peña, Penélope Alejandra. "Orbital parameters estimation for compact binary stars." Thesis, University of Warwick, 2015. http://wrap.warwick.ac.uk/75554/.

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Most stars in the Galaxy are found in multiple systems of two or more stars orbiting together. Two stars orbiting around their centre of mass are called binary stars. In close binary stars, the evolution of one star affects its companion and evolutionary expansion of one star allows for mass exchange between the components. In most cases, the material from the less massive star forms an accretion disc around the heavier companion that has evolved into a compact stellar remnant, the final state of stellar evolution. We call these systems compact binary stars (CBs). The study of CBs is key to th

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2

Islam, Salma. "Exploring the parameters of peculiar velocity fields." Thesis, University of Glasgow, 2019. http://theses.gla.ac.uk/41045/.

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The main focus of this work is to make use of a novel tool in the cosmologist's toolbox when it comes to constraining the parameters of the peculiar velocity fields of the nearby Universe called ROBUST, whose unique properties and lack of reliance on secondary distance indicators sets it apart from other available constraining techniques, rendering it potentially very useful for future upcoming surveys such as the LSST and the SKA. While ROBUST proves itself more than adequate in constraining parameters in a mock controlled environment with the IRAS PSCz survey, it begins to struggle when appl

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3

Marzola, Luca. "On leptogenesis, flavour effects and the low energy neutrino parameters." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/346819/.

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Contemporary physics is testing the boundaries of one of its existent paradigms, the Standard Model of Particle Physics. In recent years many attempts have been made in order to overcome the difficulties arising within this well known framework. Along with the effort made on the experimental side, for example the search for the Higgs boson at the Large Hadron Collider, there is a present requirement for testable theoretical scenarios describing physics beyond the current paradigms. To this purpose we consider the type I Seesaw extension of the Standard Model, in which the neutrino mass puzzle

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4

Chung, A. L. "Material parameter extraction in terahertz time domain spectroscopy." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/352056/.

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In terahertz time domain spectroscopy (THz-TDS) material parameter extraction is necessary for determining the complex refractive index of materials in the THz region. The process of material parameter extraction requires the fitting of a theoretical model for the propagation the THz pulse through the material to experimentally acquired THz time domain data, where by the complex refractive index of the theoretical model is varied until it fits the experimental data. It requires close agreement between a model of the THz electric field propagation and experimental THz data for accurate extracti

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5

Day, Stephen Paul. "Approaches to ab-initio GIPAW-DFT calculations of NMR parameters in disordered materials." Thesis, University of Warwick, 2015. http://wrap.warwick.ac.uk/78781/.

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The use of ab initio Density Functional Theory (DFT) to calculate key Nuclear Magnetic Resonance (NMR) parameters has been shown to be very successful in a variety of cases. These calculations allow one to extract meaningful data from NMR measurements by providing a foundation for spectral peak assignment. However, first principle calculations for disordered systems, typically based on a single realisation of the disorder, are inadequate if the NMR parameters depend sensitively on the location of the disordered species. In this thesis, a number of different approaches for characterising disord

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6

Pilar, T. "Measurement of the neutral D meson mixing parameters in D0 -> KSπ+π− decays". Thesis, University of Warwick, 2014. http://wrap.warwick.ac.uk/66723/.

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A model-independent measurement of the charm mixing parameters xD and yD in the D0 -> KSπ+π− decay mode is presented. The method uses ratios of yields in symmetric bins of the Dalitz plot and is binned in decay time. This is an alternative approach that does not require the knowledge of the phase-space model of the decay. It also preserves good sensitivity to xD and to the relative sign between xD and yD. Charm mixing parameters are an important step to measuring CP violation in charm mixing. The measured values of the mixing parameters are xD = (1.89±0.43±0.21±0.51)% and yD = (−2.59±1.36±1.13

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7

Dagtekin, Ebru. "Measurement Of Nonuniform Magnetized Argon Plasma Discharge Parameters." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607934/index.pdf.

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Effects of a magnetic field on the double-probe technique are studied experimentally by means of symmetric floating computer controlled fast double probes in low and intermediate pressure plasmas. In addition, the effects of the magnetic field on the electron temperature, electron density, and electric field have been investigated. As it is expected, when there is no magnetic field, properties of the discharge plasma are best described by Langmuir theory. Whereas, when there&rsquo<br>s a magnetic field of sufficient strength Schottky&rsquo<br>s theory of ambipolar diffusion applies.

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8

Yan, Bo. "Active vibration isolation with a distributed parameter isolator." Thesis, University of Southampton, 2007. https://eprints.soton.ac.uk/51281/.

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Conventional vibration isolators are usually assumed to be massless for the purpose of modelling. This simplification tends to overestimate the isolator performance because of neglecting the internal resonances (IRs) due to the distributed mass effects in the isolator, which is especially important for lightly damped metallic isolators. Previous research on the problem of IRs is not particularly comprehensive, because it does not clarify the characteristics of the distributed parameter isolator. Furthermore, with the development of active vibration isolation, there is a need to investigate the

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9

Berger, Iris. "Assoziation des QTc-Intervalls und anderer EKG-Parameter mit Polymorphismen im Ankyrin-B-Gen in der MONICA-Augsburg-Population verglichen mit Polymorphismen im Ankyrin-B-Gen in einem Hochrisikokollektiv." kostenfrei, 2008. http://www.opus-bayern.de/uni-regensburg/volltexte/2008/1048/.

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10

Haster, Carl-Johan Olof. "Compact, diverse and efficient : globular cluster binaries and gravitational wave parameter estimation challenges." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6839/.

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Following the first detection of gravitational waves from a binary coalescence, the study of the formation and evolution of these gravitational-wave sources and the recovery and analysis of any detected event will be crucial for the newly realised field of observational gravitational wave astrophysics. This thesis covers a wide range of these topics including simulating the dense environments where compact binaries are likely to form, focusing on binaries containing an intermediate mass black hole (IMBH). It is shown that such binaries do form, are able to merge within a ∼ 100 Myr simulation,

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11

Donaldson, Claire Louise. "Spine characteristics in sheep : metrology, relationship to meat yield and their genetic parameters." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/20381.

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The overall accuracy, efficiency and profitability of livestock improvement strategies can be greatly increased by incorporating quantitative genetics into livestock selection and breeding. Since the introduction of quantitative genetics, a range of traits describing the animal e.g. in terms of health, growth, fecundity, production, have been extensively evaluated in terms of genetics and are now commonly manipulated through breeding to achieve specific selection goals. An industry led enquiry as to the possibility of including spine traits in genetic selection to increase back length in sheep

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12

Holzhausen, Rudolf. "A clinical patient vital signs parameter measurement, processing and predictive algorithm using ECG." Thesis, Brunel University, 2011. http://bura.brunel.ac.uk/handle/2438/6466.

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In the modern clinical and healthcare setting, the electronic collection and analysis of patient related vital signs and parameters are a fundamental part of the relevant treatment plan and positive patient response. Modern analytical techniques combined with readily available computer software today allow for the near real time analysis of digitally acquired measurements. In the clinical context, this can directly relate to patient survival rates and treatment success. The processing of clinical parameters, especially the Electrocardiogram (ECG) in the critical care setting has changed little

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13

Altay, Mirkan. "Comparison And Evaluation Of Various Mesfet Models." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12605987/index.pdf.

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There exist various models for Microwave MESFET equivalent circuit representations. These models use different mathematical models to describe the same MESFET and give similar results. However, there are some differences in the results when compared to the experimental measurements. In this thesis, various theoretical models are applied to the same MESFET and comparison made with measured data. It is shown that some models worked better on some parameters of the MESFET, while the others were more effective on other parameters. Altogether eight models were examined and data optimized to fit the

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14

Smith, Rory James Edwin. "Gravitational-wave astronomy with coalescing compact binaries : detection and parameter estimation with advanced detectors." Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/3841/.

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The current generation of interferometric gravitational-wave detectors, LIGO and Virgo, are undergoing upgrade to their so-called advanced phase. These instruments, together with new instruments in Japan and India, KAGRA and LIGO India, will form a network of advanced gravitational-wave detectors with which detections are expected to become routine. Amongst the prime sources for gravitational- wave astronomy are coalescing compact binaries consisting of neutron stars and/or black holes. Filtering detector data to detect these sources relies on precise templates of the expected gravitational-wa

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15

Karaca, Koray. "A Physical Model For Dimensional Reduction And Its Effects On The Observable Parameters Of The Universe." Phd thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606125/index.pdf.

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In this thesis, assuming that higher spatial dimensions existed only during the inflationary prematter phases of the universe, we construct a (1+D)-dimensional (D&gt<br>3), nonsingular, homogeneous and isotropic Friedmann model for dimensional reduction. In this model, dimensional reduction occurs in the form of a phase transition that follows from a purely thermodynamical consideration that the universe heats up during the inflationary prematter phases. When the temperature reaches its Planck value Tpl,D, which is taken as the maximum attainable physical temperature, the phase of the univers

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16

Reid, David T. "Large-scale simulations of intrinsic parameter fluctuations in nano-scale MOSFETs." Thesis, University of Glasgow, 2010. http://theses.gla.ac.uk/1960/.

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Intrinsic parameter fluctuations have become a serious obstacle to the continued scaling of MOSFET devices, particularly in the sub-100 nm regime. The increase in intrinsic parameter fluctuations means that simulations on a statistical scale are necessary to capture device parameter distributions. In this work, large-scale simulations of samples of 100,000s of devices are carried out in order to accurately characterise statistical variability of the threshold voltage in a real 35 nm MOSFET. Simulations were performed for the two dominant sources of statistical variability – random discrete dop

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17

Karacali, Huseyin. "Correlations Between The Spectroscopic Parameters And The Thermodynamic Quantities For Systems Exhibiting Phase Transitions." Phd thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/2/12606914/index.pdf.

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We correlate in the first part of this study the specific heat and thermal expansivity to the temperature-and pressure-dependent frequency shifts, respectively, in ammonia solid I, solid II, hexagonal ice and ice close to their melting points. This is carried out for some fixed pressures for the two translational and one librational modes in ammonia solid I. By obtaining linear plots of specific heat and thermal expansivity against temperature-and pressure-dependent frequency shifts, the values of slope were deduced and compared with experimental values. The correlation between the thermal e

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18

Henriques, Bruno M. "Hybrid galaxy evolution modelling : Monte Carlo Markov Chain parameter estimation in semi-analytic models of galaxy formation." Thesis, University of Sussex, 2010. http://sro.sussex.ac.uk/id/eprint/2334/.

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We introduce a statistical exploration of the parameter space of the Munich semi-analytic model built upon the Millennium dark matter simulation. This is achieved by applying a Monte Carlo Markov Chain (MCMC) method to constrain the 6 free parameters that define the stellar mass function at redshift zero. The model is tested against three different observational data sets, including the galaxy K-band luminosity function, B −V colours, and the black hole-bulge mass relation, to obtain mean values, confidence limits and likelihood contours for the best fit model. We discuss how the model paramet

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19

Deniz, Muhammed. "Measurement Of Sm Electro-weak Parameters In Reactor Antineutrino-electron Scattering In Texono Experiment." Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608386/index.pdf.

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In this thesis a search for electron type neutrino-electron scattering cross-section and Weinberg Angle measurements were performed at KS Nuclear Power Station with 200 kg CsI(Tl) scintillating crystal detector located at a distance of 28 m from the 2.9 GW reactor core giving total flux of 6:52X10^12 cm^-2s^-1 in average at the experimental site. New analysis techniques and background suppression methods were developed. In the region of 3-8 MeV a measurement of SM cross section of (1:235+-0.577) XR_SM and Weinberg Angle of 0:264 +-0.075 which is quite consistent with the SM value of 0.23120(15

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20

Dilan, Kavruk. "Calculation Of The Thermodynamic And Spectroscopic Quantities In Molecular Crystals Close To The Phase Transitons." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613037/index.pdf.

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We study in this thesis work the spectroscopic and thermodynamic quantities of some substances such as ammonium halides (NH4Cl, NH4I), ferroelectric crystals of tris-sarcosine calcium chloride (TSCC), tris-sarcosine calcium bromide (TSCB), organic compounds of carbon tetrachloride (CCl4) and s-triazine (C3N3H3) close to the phase transitions. Various physical and chemical properties of those materials have been measured near the critical points and have been reported in the literature. In this study, the spectroscopic parameters of the frequency shifts, intensity and bandwidths are calculated

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21

Akbar, Demiral Salih. "The Non-uniform Argon Dc Glow Discharge System Parameters Measured With Fast Three Couples Of Double Probe." Phd thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607109/index.pdf.

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The non-uniform dc glow discharge plasma system is studied by using isolated computer controlled three couples of double probe system (TCDP) in argon gas, simultaneously. TCDP system has been developed to use for magnetized, unmagnetized, and for low oscillating plasma systems by using low pass filter with optically isolated circuitry to minimize the measurement errors with higher resolution and accuracy. Difference in the shapes and diameters of the discharge tube from region to region leads to change in the positive column glow discharge properties. This is because the positive column inhomo

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22

Ertugrul, Suat Erdem. "The Effects Of Geometric Design Parameters On The Flow Behavior Of A Dual Pulse Solid Rocket Motor During Secondary Firing." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12615184/index.pdf.

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The ability of a propulsion system is very crucial for the capability of a missile or a rocket system. Unlike liquid propellant rocket motors, the only control mechanism of the thrust value is the propellant geometry in solid propellant rocket motors. When the operation of solid propellant rocket motor has started, it cannot be stopped anymore. For this main reason the advance of dual pulse motor technology has started. The aim of this study is to investigate the geometrical effects of design parameters on the flow behavior of a dual pulse solid propellant rocket motor by using commercial Comp

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23

Rosé, Elmacin Roseline. "Génétique de la tolérance à la chaleur chez le porc : caractérisation de la variabilité génétique en milieu tropical humide." Thesis, Antilles, 2017. http://www.theses.fr/2017ANTI0170/document.

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L'objectif de la thèse est de caractériser la variabilité génétique de la tolérance à la chaleur chez le porc P.n r.roissance.Dans un premier temps, l'effet de deux envîrnnnements climatiques (tempéré, TEMP vs. tropical humide, TROP) sur les performances de production et les réponses thermorégulatrices des porcs en croissance a été évalué.Dans un deuxième temps, nous avons caractérisé le déterminisme génétique de l'adaptation à la chaleur chez le porc en croissance.Les 2 analyses ont permis de proposer des régions qui affectent significativement: les caractères de croissance, l'ingestion, l'ef

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24

Maric, Danilo. "Firmware development of a User Interface on medical devices of DIMA ITALIA Srl." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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This dissertation was written based on an internship experience at Dima Italia Srl, a leader in designing, production and marketing of medical ventilators. Once these ventilators were simple machines for breathing support, manually pumping the air in and out. Today, medical ventilators are computerized machines, electronically controlled by a small embedded system. They feature a plethora of available modes and an easy-to-use graphical interface. Exactly this is the topic of the thesis: developing a firmware with graphical interface for the next ventilator, produced and sold by Dima Italia. Th

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25

Popelka, Jan. "Vliv přenosových parametrů na spotřebu elektrické energie Zigbee zařízení." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-219897.

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This thesis deals with the energy research and design a simple wireless sensor networks. The data modules with ZigBee wireless communication technology. The main feature of wireless sensor networks is the minimal energy devices at low cost and maximum data reliability. Furthermore, the work describes firmware for communicating nodes with the ability to change parameters of data transmission and thus affect the energy consumption node. Calculations of energy consumption, compared with the measured results, the discharge characteristics of the battery packs and lifetime broadcasting node is cont

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26

HSIAO, WAN-YI, and 蕭琬頤. "Evaluation of Association Between The ATF3 Gene Variants And Electrocardiogram Parameters (Tpe interval And Tpe/QT ratio)." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/96588947241571823168.

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碩士<br>中國文化大學<br>生物科技研究所<br>104<br>Abstract OBJECTIVES：The mammalian ATF/CREB family of transcription factors represents a large group of basic region-leucine zipper (bZip) proteins. ATF3 is a stress-inducible gene with its mRNA level greatly increases upon the exposure of cells to stress signals. Recently, many insults and signals have been shown to up-regulate cardiac ATF3, including ischemia/reperfusion, doxorubicin, and neurohormonal signals in the heart. ATF3 deficiency has been shown to promote cardiac hypertrophy in an aortic banding pressure overload model. In addition, an ATF3 knock do

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27

Berger, Iris [Verfasser]. "Assoziation des QTc-Intervalls und anderer EKG-Parameter mit Polymorphismen im Ankyrin-B-Gen in der MONICA-Augsburg-Population verglichen mit Polymorphismen im Ankyrin-B-Gen in einem Hochrisikokollektiv / vorgelegt von Iris Berger." 2008. http://d-nb.info/990806138/34.

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28

Chao, Chun-Chieh, and 趙君傑. "Prognostic Value of QT Parameters in Patients with Acute Hemorrhagic Stroke: A Prospective Evaluation with Respect to Mortality and Post-hospitalization Bed Confinement." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/m9bf24.

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碩士<br>國立陽明大學<br>急重症醫學研究所<br>97<br>Background: This prospective study was performed to evaluate the prognostic prediction value of QT parameters and clinical characteristics exhibited by patients with acute hemorrhagic stroke at the time of presenting to the emergency department (ED). Methods: One hundred sixty-six patients admitted to the ED of the Taipei-Veterans General Hospital from January 2006 to October 2006 because of acute hemorrhagic stroke were enrolled. Glasgow Coma Scale (GCS) scores between 3 and 8 were taken to indicate severe neurological deficits. QT parameters (QT max, QT min,

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