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Dissertations / Theses on the topic 'Harmonic'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Thunberg, Erik. "On the Benefit of Harmonic Measurements in Power Systems." Doctoral thesis, Stockholm, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3219.

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2

Anand, Christopher Kumar. "Harmonic maps." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59558.

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After a brief introduction, we consider three main results in the existence theory of harmonic maps between manifolds. The first is the heat-equation proof of Eells and Sampson, which says that minimal harmonic maps of compact manifolds into compact manifolds with nonpositive curvature always exist. The next two results show they exist among maps of compact Riemann surfaces into compact manifolds, N, with $ pi sb2$(N) = 0. One proof uses the induced $ pi sb1$-action of Schoen and Yau; the other a perturbation of the action due to Sacks and Uhlenbeck. As required, we also develop some of the re

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3

Pašović, Mirza. "Tissue harmonic reduction : application to ultrasound contrast harmonic imaging." Thesis, Lyon 1, 2010. http://www.theses.fr/2010LYO10060.

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Les agents de contraste sont de petites bulles qui répondent non linéairement lorsqu’ils sont exposés à ultrasons. La réponse non-linéaire donne la possibilité d’images échographiques harmoniques qui a beaucoup d’avantages sur l’imagerie fondamentale. Toutefois, afin d’accroître l’échographie de contraste d’imagerie harmonique de performance nous devons d’abord comprendre la propagation non linéaire d’ultrasons. La non-linéarité du milieu déforme l’onde qui se propage, tels que les harmoniques commencent à se développer. La théorie qui a été prévue est la mise en œuvre, qui a permis une nouvel

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4

Wilmhurst, Alan Stephen. "Complex harmonic mappings and the valence of harmonic polynomials." Thesis, University of York, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259748.

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5

Lai, Tsz-ming Terence. "Harmonic simulation of traction system /." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21929543.

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6

Hungerbühler, Norbert. "p-harmonic flow /." [S.l.] : [s.n.], 1994. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10740.

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7

Thomack, Andrew. "Random Harmonic Polynomials." Thesis, Florida Atlantic University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10681500.

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<p> The study of random polynomials and in particular the number and behavior of zeros of random polynomials have been well studied, where the first signicant progress was made by Kac, finding an integral formula for the expected number of zeros of real zeros of polynomials with real coefficients. This formula as well as adaptations of the formula to complex polynomials and random fields show an interesting dependency of the number and distribution of zeros on the particular method of randomization. Three prevalent models of signicant study are the Kostlan model, the Weyl model, and the naive

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8

Freedman, Dylan. "Correlational Harmonic Metrics: Bridging Computational and Human Notions of Musical Harmony." Thesis, Harvard University, 2015. http://nrs.harvard.edu/urn-3:HUL.InstRepos:14398545.

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The goal of this paper is to show that traditional music information retrieval tasks with well-chosen parameters perform similarly using computationally extracted chord annotations versus ground-truth annotations. Using a collection of Billboard songs from the last 60 years with provided ground-truth chord labels, I use established automatic chord identification algorithms to produce a corresponding extracted chord label dataset. I devise methods to compare chord progressions between two songs on the basis of their optimal localized alignment scores, adapting traditional sequence alignment tec

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9

Raimundo, Nuno de Mendonça Freire Nogueira. "A harmonia musical da arquitectura de seiscentos. Análise e intervenção no Convento de Santa Marta." Master's thesis, Universidade de Lisboa. Faculdade de Arquitetura, 2014. http://hdl.handle.net/10400.5/7182.

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10

Orillaza, Jordan Rel Cajudo. "Harmonic State Space Model of Three Phase Thyristor Controlled Reactor." Thesis, University of Canterbury. Electrical and Computer Engineering, 2012. http://hdl.handle.net/10092/6634.

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Harmonic domain models have been developed for Thyristor Controller Reactors (TCR) and other power electronic devices. Recently, these models have been extended to describe not just the steady-state harmonic interactions but harmonic transients as well. However, these dynamic models consistently do not incorporate models for controls. On the other hand, for the TCR as a FACTS Controller, dynamic models are available in which only the fundamental frequency component of the Controller is included; excluding harmonic interactions presumes that these do not affect the dynamics of the Controller.

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11

Abou, Qamar Nezar Yehya. "SUPPRESSION OF HARMONIC TORQUE AND HARMONIC CURRENT IN PERMANENT MAGNET SYNCHRONOUS MOTOR." OpenSIUC, 2018. https://opensiuc.lib.siu.edu/dissertations/1522.

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In this dissertation harmonic current, harmonic torque originated at the load and harmonic torque originated at the motor, where modeled and treated via closed loop control. The dissertation propose a remedy for cancelling harmonic current by placing the proposed adaptive feedforward controller (AFC) in parallel with the FOC current control. Similarly, harmonic torque load was cancelled by proposing an AFC in parallel with the speed control loop. Harmonic torque originated in the motor mainly due to harmonic flux where cancelled through the estimation of harmonic flux, which was achieved by a

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12

Wright, P. S. "The accurate analysis of smoothly fluctuating harmonics applied to the calibration of harmonic analysers." Thesis, University of Surrey, 2002. http://epubs.surrey.ac.uk/843265/.

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The aim of this research is to develop an accurate method for the analysis of signals composed of fluctuating harmonics. The results obtained of analysis are applied to the calibration of harmonic analysis instruments. A new method is presented suitable for the accurate analysis of smoothly fluctuating harmonic signals. The method is based on a model of signals with a known period, in which the harmonics are individually modulated by polynomial functions normalised over a sampled signal sequence time. Using this model, a decomposition method is developed such that the modulating polynomials ca

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13

Lidberg, Petter. "Barycentric and harmonic coordinates." Thesis, Uppsala universitet, Algebra och geometri, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-179487.

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14

Peidaee, Pantea, and pantea peidaee@rmit edu au. "Strongly Perturbed Harmonic Oscillator." RMIT University. SECE, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080804.094824.

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The limits of current micro-scale technology is approaching rapidly. As the technology is going toward nano-scale devices, physical phenomena involved are fundamentally different from micro-scale ones [1], [2]. Principles in classical physics are no longer powerful enough to explicate the phenomena involved in nano-scale devices. At this stage, quantum mechanic sheds some light on those topics which cannot be described by classical physics. The primary focus of this research work is the development of an analysis technique for understanding the behavior of strongly perturbed harmonic oscilla

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15

Voormolen, Marco Marien. "Three dimensional harmonic echocardiography." [S.l.] : Rotterdam : [The Author] ; Erasmus University [Host], 2007. http://hdl.handle.net/1765/10598.

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16

Miller, Allan J. V. "Power system harmonic monitoring." Thesis, University of Canterbury. Electrical and Electronic Engineering, 1992. http://hdl.handle.net/10092/6043.

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This thesis documents the design details, development, and field testing of an advanced power system harmonic monitor. It begins by reviewing present harmonic standards and harmonic monitoring equipment. It then goes on to describe the design and field use of the first generation harmonic monitor. From the field use a number of problems with this monitor are identified leading to the second generation harmonic monitor known as CHART II. The acronym CHART means Continuous Harmonic Analysis in Real-Time. The design of the monitor including the data acquisition and computer processing equipment,

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17

Liu, Yanzhen. "Active supply harmonic filtering." Thesis, University of Sussex, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266446.

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18

Hakkarainen, Susan Spira. "Submillimeter wave harmonic gyrotron." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14209.

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19

Li, Lingfei. "Functoriality of Harmonic Foliations." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1229363951.

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20

Aintablian, Hrair. "Harmonic currents generated by personal computers, their effects on the power system and methods of harmonic reduction." Ohio University / OhioLINK, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1173762870.

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21

Deib, Deib Ali. "Programmed harmonic reduction in inverters and controlled rectifiers." Ohio : Ohio University, 1993. http://www.ohiolink.edu/etd/view.cgi?ohiou1173759592.

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22

Huang, Qihong. "Harmonic Reduction IN a Single-Switch Three-Phase Boost Rectifier With Harmonic-Injected PWM." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36538.

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A constant switching frequency with the sixth-order harmonic injection PWM concept is established, and a sixth-order harmonic injection technique is developed for the harmonic reduction of a single-switch three-phase boost rectifier. The approach employs a constant duty cycle with sixth-order harmonic injection to suppress the dominant (fifth-order) harmonic in the input currents. Hence, to meet the THD<10% requirement, the rectifier voltage gain can be designed down to 1.45; to meet the IEC 1000-3-2 (A) standard, the output power can be pushed up to 10 kW for the application with a 3X220 V in

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23

Bartlett, Stephen D., Hubert de Guise, Barry C. Sanders, and Andreas Cap@esi ac at. "Quantum Computation with Harmonic Oscillators." ESI preprints, 2000. ftp://ftp.esi.ac.at/pub/Preprints/esi962.ps.

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24

Zubi, Hazem. "Lowpass Broadband Harmonic Filter Design." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606587/index.pdf.

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In this thesis an analytical design method of the improved broadband passive harmonic filter (IBF) for three phase diode rectifier front-end type adjustable speed drives is presented. The method is based on frequency domain modeling of the rectifier and filter. The success of the method involves accurate representation of the load harmonics. With the harmonics well defined, the harmonic and fundamental frequency equivalent circuits are utilized to analytically calculate the voltages/currents. Thus, the size and the performance of the filter can be optimized. The analytical method is verified v

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25

Volkov, Evgeny. "Characterization of intrinsically harmonic forms." Diss., lmu, 2007. http://nbn-resolving.de/urn:nbn:de:bvb:19-66959.

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26

Beliaev, Dmitri. "Harmonic measure on random fractals." Doctoral thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-114.

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27

Horihata, Kazuhiro. "The evolution of harmonic maps /." Sendai : Univ, 1999. http://www.loc.gov/catdir/toc/fy0706/2006438743.html.

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28

Platz, Daniel. "Reconstructing force from harmonic motion." Doctoral thesis, KTH, Nanostrukturfysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-122583.

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High-quality factor oscillators are often used in measurements of verysmall force since they exhibit an enhanced sensitivity in the narrow frequencyband around resonance. Forces containing frequencies outside this frequencyband are often not detectable and the total force acting on the oscillatorremains unknown. In this thesis we present methods to eciently use theavailable bandwidth around resonance to reconstruct the force from partialspectral information.We apply the methods to dynamic atomic force microscopy (AFM) wherea tip at the end of a small micro-cantilever oscillates close to a samp

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29

Zhang, Fan. "Power system harmonic state estimation." Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/13019.

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30

Kobak, Piotr Z. "Quaternionic geometry and harmonic maps." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357422.

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31

Maudarbocus, Sara. "Multipole Algorithms in Harmonic Elasticity." Thesis, Imperial College London, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.523745.

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32

Talacek, Philip. "Valuation of harmonic current injections." Thesis, University of Canterbury. Electrical & Computer Engineering, 2002. http://hdl.handle.net/10092/4508.

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The number of power electronic and distorting loads, continue to grow at a rapid pace. Accompanying this growth in distortion sources is an increased sensitivity of certain types of loads to harmonic distortion, and poor power quality in general. The result is greater variance in the value loads place on a harmonic free supply, and therefore what they are prepared to pay to mitigate the potential consequences of harmonic distortion. Harmonic distortion imposes costs worth considering, if not, no action would be taken by networks to mitigate the effects of harmonic injections. This thesis de

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33

Skrobic, Stevan. "Harmonic Suppression in Nonlinear Systems." Thesis, KTH, Tillämpad fysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170394.

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34

Griffin, Michael John. "Applications of Harmonic Maass Forms." Thesis, Emory University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3708974.

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<p> In this thesis, we prove various results in the theory of modular forms and harmonic Maass forms, representation theory, elliptic curves and differential geometry. In particular, we give a broad framework of Rogers-Ramanujan identities and algebraic values; we prove that Ramanujan's mock theta functions satisfy his original conjectured definition; and we show that certain harmonic Maass forms which arise naturally from the arithmetic of elliptic curves encode central <i>L</i>-values and <i>L</i>-derivatives involved in the Birch and Swinnerton-Dyer conjecture. We also prove a conjecture of

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35

Lai, Tsz-ming Terence, and 黎子明. "Harmonic simulation of traction system." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B3122281X.

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36

盧貴榮 and Kwai-wing Eric Lo. "Harmonic maps in Kähler geometry." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31214368.

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37

Huang, Shiping. "Active mains supply harmonic filtering." Thesis, University of Sussex, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309440.

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38

Oldfield, Matthew. "Harmonic excitation of bolted joints." Thesis, University of Liverpool, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.400233.

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Bolted joints provide one of the most common means of joining two structural components together. The joints themselves use friction to transmit force, torque and motion across a common interface from one component to another. In many cases a pretensioned bolt, running through a common hole at the joint interface, provides the clamping force. The friction force at a joint interface is highly nonlinear. This makes the analysis of dynamic systelTIS with joints unrealistic with conventional linear techniques. It has also been shown that the contact pressure at a joint interface is not necessarily

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39

Matthews, S. R. "Harmonic control on power systems." Thesis, Queen's University Belfast, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295421.

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40

Pityana, Sisa Lesley. "Second harmonic generation in waveguides." Thesis, University of Sussex, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239511.

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41

Pinski, Sebastian. "Phonons in disordered harmonic lattices." Thesis, University of Warwick, 2013. http://wrap.warwick.ac.uk/57512/.

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This work explores the nature of the normal modes of vibration for harmonic lattices with the inclusion of disorder in one-dimension (1D) and three-dimensions (3D). The model systems can be visualised as a `ball' and `spring' model in simple cubic configuration, and the disorder is applied to the magnitudes of the masses, or the force constants of the interatomic `springs' in the system. With the analogous nature between the electronic tight binding Hamiltonian for potential disordered electronic systems and the isotropic Born model for phonons in mass disordered lattices we analyse in detail

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42

Van, der Merwe Marius. "Harmonic mixer analysis and design." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52872.

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Thesis (MScEng) -- Stellenbosch University, 2002.<br>Some digitised pages may appear illegible due to the condition of the original hard copy.<br>ENGLISH ABSTRACT: Harmonic mixers are capable of extended frequency operation by mixing with a harmonic of the LO (local oscillator) signal, eliminating the need for a high frequency, high power LO. Their output spectra also have certain characteristics that make them ideal for a variety of applications. The operation of the harmonic mixer is investigated, and the mixer is analyzed using an extension of the classic mixer theory. The synthesis of

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43

Black, Malcolm J. "Harmonic maps into homogeneous spaces." Thesis, University of Warwick, 1990. http://wrap.warwick.ac.uk/107838/.

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This thesis investigates harmonic maps into homogeneous spaces, principally flag manifolds. First we show that an f-holomorphic map of a Hermitian cosymplectic manifold is harmonic provided that the f-structure on the co-domain satisfies (d∇F)1,1 = 0, where ∇ is the Levi-Civita connection. We then characterize those invariant f-structures and metrics on homogeneous spaces which satisfy this condition. On a homogeneous space whose tangent bundle splits as a direct sum of mutually distinct isotropy spaces (e.g. a flag manifold), we see that an f-structure which is horizontal (i.e. [F+, F] ⊂ h) s

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44

Harris, Ellen T. "Harmonic Organization of Handel's Operas." Bärenreiter Verlag, 1987. https://slub.qucosa.de/id/qucosa%3A37217.

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45

Russell, Michael L. "The Phenomenology of Harmonic Progression." Thesis, University of North Texas, 2020. https://digital.library.unt.edu/ark:/67531/metadc1703408/.

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This dissertation explores a method of music analysis that is designed to reflect the phenomenology of the listening experience, specifically in regards to harmony. It is primarily inspired by the theoretical approaches of the music theorist Moritz Hauptmann and by the writings of philosopher Edmund Husserl.

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46

Alhwaitiy, Hebah Sulaiman. "POTENTIAL THEORY AND HARMONIC FUNCTIONS." Kent State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=kent1448671803.

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47

Nemček, Sebastian. "Harmonic Patterns in Forex Trading." Master's thesis, Vysoká škola ekonomická v Praze, 2013. http://www.nusl.cz/ntk/nusl-197640.

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This diploma thesis is committed to examination of validity of Harmonic Patterns in Forex trading. Scott Carney described existing and introduced new Harmonic Patterns in 1999 in his book Harmonic Trader. These patterns use the Fibonacci principle to analyze price action and to provide both bullish and bearish trading signals. The goal of this thesis is to find out whether harmonic trading strategy on selected pairs is profitable in FX market, which patterns are the most profitable and what is the success rate for the signals they provide.

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48

Banchs, Rafael Enrique. "Time harmonic field electric logging /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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49

Lo, Kwai-wing Eric. "Harmonic maps in Kähler geometry /." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18716684.

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50

Pacheco, Rui. "Harmonic maps and loop groups." Thesis, University of Bath, 2004. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404621.

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