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Dissertations / Theses on the topic 'Harmonic sources'

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1

Yeung, Mark Kai Ho. "Development of extreme ultraviolet harmonic sources from intense laser interactions." Thesis, Queen's University Belfast, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580130.

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Laser based sources of high order harmonic radiation have been the subject of great interest over the last three decades due to the promise they hold of providing widespread laboratory access to coherent extreme ultraviolet and X- ray light. The short wavelength nature of this harmonic radiation, combined with its ability to support pulses with durations on the scale of attoseconds, permits the study of microscopic processes on unprecedented timescales. This thesis reports on a body of experimental and theoretical work aimed at further developing these unique sources. High intensity laser inte
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2

Schoun, Stephen Bradley. "Attosecond High-Harmonic Spectroscopy of Atoms and Molecules Using Mid-Infrared Sources." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1436853089.

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3

Serfontein, Duan. "The assessment of waveform distortion in power systems : validation of methods based on single-point measurements / Duan Serfontein." Thesis, North-West University, 2011. http://hdl.handle.net/10394/8486.

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The portion of energy converted by non-linear loads in the modern power system is increasing due to the energy-efficiency and sophistication possible with power electronics. Higher voltage and energy ratings are continuously forthcoming. These devices draw non-linear currents resulting in voltage waveform distortion at the Point of Common Coupling due to non-zero supply impedances between voltage source and the PCC. With the increase in waveform distortion comes the demand for better Quality of Supply management. The verification and quantification of the origin of waveform distortion in a pow
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4

Lai, Chien-Jen Ph D. Massachusetts Institute of Technology. "Tabletop coherent extreme ultraviolet and soft X-ray sources based on high harmonic generation." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/91106.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2014.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 105-115).<br>High harmonic generation (HHG) is a fascinating strong-field physics phenomenon that occurs when a laser pulse with a moderate intensity interacts with atoms and partially ionizes the atoms. A series of harmonics are generated at similar efficiencies and extend to a few tenth, even thousandth, order harmonics at the extreme ultraviolet (EUV) and soft X-ray range. Such an unprec
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5

Gonzalez, Angarita Aura Inés. "Single shot lensless imaging with coherence and wavefront characterization of harmonic and FEL sources." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112055/document.

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L’imagerie sans lentille a élargi le champ d’applications de l’imagerie aux sources cohérentes de courte longueur d’onde dans le domaine XUV, pour lequel les systèmes optiques pour l’imagerie ne sont pas facilement disponibles. En outre, les sources pulsées ultra brèves XUV et X basées sur la génération d’harmoniques laser d’ordre élevé (HHG) et les lasers à électrons libres (FEL) offrent une très bonne résolution temporelle (femto 10-15s - atto 10-18s). Ce sont donc les outils indispensables pour suivre les dynamiques ultrarapides à l’échelle nanométrique. Il est donc nécessaire de disposer d
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6

Tortora, Alessandra. "Study and applications of the coherence properties of supercontinuum and high-order harmonic sources." Paris 6, 2006. http://www.theses.fr/2006PA066587.

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7

Palle, Sreeshailam. "Voltage Harmonic Control of Weak Utility Grid Through Distributed Energy Systems." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1344998933.

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8

Fernandes, Ricardo Augusto Souza. "Localização e identificação de consumidores com alta contribuição para a distorção harmônica de tensão em sistemas de distribuição." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/18/18153/tde-08092011-160635/.

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Esta tese consiste em apresentar um método para localização e identificação de consumidores com alta contribuição para a distorção harmônica de tensão medida em subestações de sistemas de distribuição de energia elétrica. Cabe comentar que a etapa de localização visa obter uma lista das possíveis posições onde possa estar alocado o consumidor que possua cargas não lineares com grande consumo de potências harmônicas. Partindo-se desta lista, realiza-se a etapa de identificação, em que são estimadas as amplitudes de cada harmônica na posição selecionada. Por fim, um algoritmo para ajuste/sintoni
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9

Cantono, Giada. "Relativistic Plasmonics for Ultra-Short Radiation Sources." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS353/document.

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La plasmonique étudie le couplage entre le rayonnement électromagnétique et les oscillations collectives des électrons dans un matériel. Les plasmons de surface (SPs), notamment, ont la capacité de concentrer le champ électromagnétique sur des distances micrométriques, ce qui les rend intéressants pour le développement des dispositifs photoniques les plus novateurs. 'Etendre l'excitation de SPs au régime de champs élevés, où les électrons oscillent à des vitesses relativistes, ouvre des perspectives stimulantes pour la manipulation de la lumière laser ultra-intense et le développement de sourc
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10

Tadesse, Getnet [Verfasser], Jens [Gutachter] Limpert, Christian [Gutachter] Eggeling, and William S. [Gutachter] Brocklesby. "Nanoscale coherent diffractive imaging using high-harmonic XUV sources / Getnet Tadesse ; Gutachter: Jens Limpert, Christian Eggeling, William S. Brocklesby." Jena : Friedrich-Schiller-Universität Jena, 2019. http://d-nb.info/1207320242/34.

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11

Hage, Arvid. "Development of harmonic generation sources and characterisation of UV and XUV radiation at high power and free-electron lasers." Thesis, Queen's University Belfast, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.680085.

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The main topic of this thesis was to develop XUV sources for direct seeding and UV sources for high-gain harmonic generation (HGHG) at the second undulator beamline of the Free-Electron Laser in Hamburg (FLASH2). The thesis is divided into three topics: (i) UV- and (ii) XUV-seed sources and (iii) the seeding and diagnostic setups of FLASH2. In the UV section the opportunity to seed FLASH2 with HGHG is investigated. The seed radiation is generated with a purpose-built optical parametric chirped pulse amplifier (OPCPA) operating in a 10 Hz burst mode with an intra burst repetition rate of 100 kH
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12

Fernandes, Ricardo Augusto Souza. "Identificação de fontes de correntes harmônicas por redes neurais artificiais." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/18/18153/tde-27052009-143220/.

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Este trabalho consiste em apresentar um método alternativo para a identificação de fontes de correntes harmônicas comumente encontradas em sistemas elétricos residenciais. Desta identificação, soluções viáveis poderão ser aplicadas com o intuito de mitigar os níveis de emissão das correntes harmônicas geradas, principalmente, por cargas com características não lineares. Para a identificação empregou-se redes neurais artificiais (RNAs), sendo esta técnica inteligente, apresentada como uma alternativa aos métodos convencionais. Os resultados reportados neste contexto procuram validar a proposta
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13

Plogmaker, Stefan. "Techniques and Application of Electron Spectroscopy Based on Novel X-ray Sources." Doctoral thesis, Uppsala universitet, Yt- och gränsskiktsvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-168799.

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The curiosity of researchers to find novel characteristics and properties of matter constantly pushes for the development of instrumentation based on X-radiation. I present in this thesis techniques for electron spectroscopy based on developments of X-ray sources both in time structure and energy. One part describes a laser driven High-Harmonic Generation source and the application of an off-plane grating monochromator with additional beamlines and spectrometers. In initial experiments, the source is capable of producing harmonics between the 13th and 23rd of the fundamental laser 800 nm wavel
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14

Musoni, Nkusi Emmanuel. "Analysis of the effect of renewable generation on the power quality of the grid, modelling and analysis of harmonic and voltage distortion." Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2805.

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Thesis (Master of Engineering in Electrical Engineering)--Cape Peninsula University of Technology, 2018.<br>As the electric energy demand grows, there is a significant increase in the penetration of renewable generation (RG) in the existing electrical grid network. Interconnecting of renewable generation technologies to an existing distribution system has proven to provide various benefits such as meeting the growing load demand and its contribution to energy system decarbonisation, long-term energy security and expansion of energy access to new energy consumers in the developing urban and rur
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15

Guesmi, Khmaies. "Etude d’un laser à fibre microstructurée en forme de huit et développement de sources à 1.6 μm". Thesis, Angers, 2015. http://www.theses.fr/2015ANGE0030/document.

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Les travaux de recherche, rapportés dans ce manuscrit, portent sur l’étude d’un laser à fibre en forme de huit et le développement de sources à 1.6 µm. En premier temps, nous avons étudié la dynamique impulsionnelle d’un laser à fibre micro-structurée en forme de huit. L’objectif est de montrer l’impact des propriétés de la fibre micro-structurée sur le comportement impulsionnel du laser. Nous avons également étudié le phénomène d’hystérésis dans cette cavité. Nos résultats numériques ont permis de démontrer l’universalité de ce phénomène dans les cavités lasers. Autrement, il est indépendant
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16

Du, Liangfen. "Characterisation of air-borne sound sources using surface coupling techniques." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI028/document.

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La thèse se base sur la recherche des possibilités de caractérisation du son aérien de sources sonores arbitraires. A cette fin, une approche particulière est étudiée à l’endroit où la caractérisation de la source est faite via une surface d’interface qui enveloppe totalement ou partiellement la source physique. Deux descripteurs qui dépendent de la fréquence sont definis au travers d’une telle surface: la pression sonore bloquée et l’impédance de la source. Le précédent représente la pression sonore créée par le système d’exploitation source qui agit sur la surface enveloppante quand elle est
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17

Pinaud, Olivier. "Caractérisation, modélisation et identification de sources de champ magnétique dans un véhicule électrique." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENT070/document.

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Le véhicule électrique rassemble beaucoup d'équipements électrotechniques. Tous sont potentiellement source de champ magnétique dans l'habitacle : zone confinée où se trouvent les passagers. Il est illusoire de réaliser un modèle numérique complet tant le nombre de paramètres est important. Il est également impossible de placer des capteurs de champ partout à l'intérieur de l'habitacle. Après une étude approfondie des caractéristiques du champ magnétique mesuré dans l'habitacle, nous proposons d'allier modèle a priori et mesure de champ dans une approche Bayésienne du problème inverse. Basée s
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18

Cornet, Marion. "Développement de sources térahertz intenses et applications en optique non-linéaire." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0194/document.

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Ces travaux de thèse portent sur l’étude de différents phénomènes non-linéaires ayantlieu dans le domaine térahertz (THz) au sein de cristaux de structure zinc-blende.En premier lieu, nous avons mis en place au laboratoire deux sources de rayonnementTHz intense, aux caractéristiques temporelles et spectrales bien distinctes. La premièrerepose sur le redressement optique d’une impulsion laser de durée femtoseconde dansun cristal de niobate de lithium, et la seconde est, quant à elle, basée sur la créationd’un plasma par focalisation d’un champ optique compos´e de l’impulsion fondamentalede pomp
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19

Sutherland, Julia Robin Miller. "Phase-Matching Optimization of Laser High-Order Harmonics Generated in a Gas Cell." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd880.pdf.

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20

Mahieu, Benoît. "Cohérence, accordabilité, propriétés spectrales et spatiales de sources de lumière extrême-ultraviolette femtoseconde." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00967018.

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Les lasers à électrons libres (LELs) à simple passage représentent actuellement la possibilité la plus prometteuse pour fournir des impulsions lumineuses de haute énergie (µJ à mJ) à des échelles de durée femtoseconde (1 fs = 10⁻¹⁵s) et des longueurs d'ondes ultra-courtes (résolution nanométrique i.e., jusqu'aux domaines de l'extrême-ultraviolet et des rayons X). Les LELs émettant dans l'extrême-ultraviolet sont une technologie encore jeune, si bien que de nombreuses questions restent ouvertes. Celles posées au sein de ce manuscrit concernent la configuration dite injectée, dans laquelle le pro
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21

Chaitanya, Kumar Suddapalli. "High-power, fiber-laser-pumped optical parametric oscillators from the visible to mid-infrared." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/83528.

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High-power, continuous-wave (cw), mid-infrared (mid-IR) laser sources are of interest for variety of applications such as trace gas detection and remote sensing, which require broad spectral coverage to address the most prominent absorption features of a wide range of molecular species particularly in the mid-IR fingerprint region. On the other hand, surgical applications require high energy sources with unique pulse structure at specific wavelength in the mid-IR ranging from 6-6.5 m. Optical parametric oscillators (OPOs) offer potential sources for all the above applications. The outp
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22

Rihan, Abdallah. "Sources laser non linéaires accordables dans l'infrarouge et l'ultraviolet pour la métrologie des rayonnements optiques." Phd thesis, Conservatoire national des arts et metiers - CNAM, 2011. http://tel.archives-ouvertes.fr/tel-00705888.

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L'objet de cette thèse porte sur la conception et la réalisation de deux sources laser non linéaires accordables dans les domaines IR et UV, pour le raccordement de la sensibilité spectrale des détecteurs au moyen du radiomètre cryogénique du laboratoire commun de métrologie (LCM). La source IR est un oscillateur paramétrique optique (OPO) résonant sur les ondes pompe et signal (PRSRO), utilisant un cristal de niobate de lithium à inversion de domaines de polarisation dopé par 5% d'oxyde de magnésium (ppMgCLN). Pompé par un laser Ti:Al2O3 en anneau mono-fréquence et accordable, délivrant 500 m
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Bruder, Brittany Lynn. "Assessment of hydrokinetic renewable energy devices and tidal energy potential at Rose Dhu Island, GA." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41198.

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Current hydro-turbines aim to capture the immense energy available in tidal movements, however commonly applied technologies rely on principles more applicable in hydroelectric dams. Tidal stream currents, such as in Coastal Georgia, are not strong enough to make such turbines both efficient and economically viable. This research proposes a novel low-energy vortex shedding vertical axis turbine (VOSTURB) to combat the inefficiencies and challenges of hydro-turbines in low velocity free tidal streams. Some of the energy in tidal streams is extracted naturally from vortex shedding; as wate
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Ormrod, James Ernest. "Harmonic state space modelling of voltage source converters." Thesis, University of Canterbury. Electrical and Computer Engineering, 2013. http://hdl.handle.net/10092/8081.

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The thesis describes the development of a model of the three-phase Voltage Source Converter (VSC) in the Harmonic State Space (HSS) domain, a Linear Time Periodic (LTP) extension to the Linear Time Invariant (LTI) state space. The HSS model of the VSC directly captures harmonic coupling effects using harmonic domain modelling concepts, generalised to dynami- cally varying signals. Constructing the model using a reduced-order three-phase harmonic signal representation achieves conceptual simplification, reduced computational load, and direct inte- gration with a synchronous frame vector control
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25

Mills, Benjamin. "Focussing and diffraction using a high harmonic source." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/340844/.

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High Harmonic Generation is a highly nonlinear process that can be used to generate a high flux, low divergence, coherent beam in the extreme ultraviolet (XUV) wavelength range. It is proposed that this radiation source could be implemented for microscopy using coherent diffractive imaging, with potential measurements including the shape characterisation of single proteins and other biological samples. This thesis documents the development of the diffraction beam line at the University of Southampton, and presents experimental results that show progress towards this goal. A spherical multilaye
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Jovan, Knežević. "Novi metod za analizu harmonijskog izobličenja signala kod ocene kvaliteta električne energije." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=100921&source=NDLTD&language=en.

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Naučna rasprava izložena u ovoj tezi bavi se analizomkvaliteta električne energije. Visok nivo električneenergije podrazumeva da su napon napajanja i strujapotrošača idealne sinusoide sa tačno određenomamplitudom i učestanošću. Bilo kakva odstupanja odidealnog nazivaju se izobličenja i najčešće sekarakterišu sa harmonicima.Poslednjih godina dolazi do naglog razvojapoluprovodničkih komponenata. Takve komponente suuticale na ubrzan razvoj snažnih uređaja energetskeelektronike. Ti uređaji su nelinearnog karaktera, štodovodi do pojave harmonika u signalima napona i strujaelektroenergetskog sistema
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27

Gursoy, Ekrem Niebur Dagmar. "Independent component analysis for harmonic source identification in electric power systems /." Philadelphia, Pa. : Drexel University, 2007. http://hdl.handle.net/1860/1781.

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28

Ujile, Awajiokiche. "Harmonic estimation and source identification in power distribution systems using observers." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/harmonic-estimation-and-source-identification-in-power-distribution-systems-using-observers(d66cfe60-e1a5-44d8-9555-be7ec0fb8090).html.

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With advances in technology and the increasing use of power electronic components in the design of household and industrial equipment, harmonic distortion has become one of the major power quality problems in power systems. Identifying the harmonic sources and quantifying the contributions of these harmonic sources provides utility companies with the information they require to effectively mitigate harmonics in the system. This thesis proposes the use of observers for harmonic estimation and harmonic source identification. An iterative observer algorithm is designed for performing harmonic est
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Parsons, Aaron D. "Coherent diffraction imaging using a high harmonic source at 40 eV." Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/370609/.

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This thesis presents the current status of coherent diffractive imaging and ptychography using the high harmonic at the University of Southampton. The full system used to generate the 40 eV radiation and collect the far-field speckle patterns is outlined and critical criteria discussed. The algorithms used to re-phase the data are outlined and some simple 1-dimensional examples are given. The question of how to appropriately state the resolution of a coherent diffraction system is addressed and the concluding results are applied to the work in the experimental chapters, of which this thesis co
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Praeger, Matthew. "Development and spatio-spectral mapping of a capillary high harmonic source." Thesis, University of Southampton, 2008. https://eprints.soton.ac.uk/66192/.

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This work describes the development and operation of a capillary based High Harmonic Generation (HHG) system. Using this system a coherent beam of soft x-rays is generated, studied and applied. A series of experiments was then undertaken in order to deepen our knowledge of the HHG process and to optimise the performance of the source. Notable contributions made to the field are: A novel laser mode quality measuring device. (Laser mode quality strongly affects the efficiency of the capillary launch). A study of the spectral output of the system as a function of gas pressure, laser power, and la
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Feehan, James. "Development and characterization of a fibre laser driven high-harmonic source." Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/400668/.

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Table-top high-harmonic sources of extreme ultraviolet (XUV) light are very attractive for applications in coherent diffractive imaging, spectroscopy, and lithography. When compared with synchrotrons and free electron lasers they have greatly reduced size and cost, so beam time would be more readily available to users. Increasing the repetition rate of table-top XUV sources is of interest as it enables faster data acquisition, but this cannot be achieved easily using traditional solid state sources, which require cryogenic cooling for average powers beyond ~5 W. The demonstrated ability of fib
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Chi, Taiyun. "Silicon-based terahertz signal generation with multi-phase sub-harmonic injection locking technique." Thesis, Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/55058.

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This thesis presents a multi-phase injection locking (IL) technique and its application in the locking range extension in multi-phase injection locking oscillators (ILOs) for Terahertz (THz) signal generation. The proposed technique can significantly increase the frequency locking range of a multi-phase injection locking oscillator compared to the conventional single-phase injection locking scheme. Based on the multi-phase IL technique and sub-harmonic ILOs, an “active frequency multiplier chain” architecture and a multi-ring system layout topology are also proposed to achieve scalable THz sig
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Teeters, Bradley W. "Variable frequency control of voltage source inverters using harmonic distortion minimization scheme." Ohio : Ohio University, 1999. http://www.ohiolink.edu/etd/view.cgi?ohiou1175285333.

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Kumar, Rajiv. "Programmed harmonic reduction in single phase and three phase voltage-source inverters." Ohio : Ohio University, 1996. http://www.ohiolink.edu/etd/view.cgi?ohiou1178302407.

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Baksh, Peter. "Ptychographic imaging of real biological samples using a high harmonic and synchrotron source." Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/404697/.

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Visualisation of nano structure is essential for rapidly evolving fields such as lithography, and to gain a greater understanding of mechanisms behind biological processes. This thesis focuses on using coherent diffraction imaging methods to resolve fine biological structures using a high harmonic generation source and a synchrotron source. The majority of work is focused on developing imaging using the ptychography technique using extreme ultraviolet radiation (EUV) at the University of Southampton. The state of the high harmonic generation imaging beam line is first improved. Flux, stability
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Krige, Ernst. "Harmonic interaction between weak AC systems and VSC-based HVDC schemes." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71704.

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Thesis (MScEng)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: The implementation of the Caprivi Link Interconnector (CLI) High Voltage Direct Current (HVDC) scheme in 2010 connecting the weak Namibian and Zambian Alternating Current (AC) transmission networks via overhead line is based on Voltage Source Converter (VSC) technology. This world-first combination of attributes presents a unique opportunity to study harmonic interaction between weak AC systems and VSC-based HVDC schemes. Relatively few publications exist that focus on AC and DC harmonic interaction and very few refer to VSC
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Yoerger, Edward J. Jr. "Vertical Acoustic Propagation in the Non-Homogeneous Layered Atmosphere for a Time-Harmonic, Compact Source." ScholarWorks@UNO, 2019. https://scholarworks.uno.edu/td/2709.

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In this work we study vertical, acoustic propagation in a non-homogeneous media for a spatially-compact, time-harmonic source. An analytical, 2-layer model is developed representing the acoustic pressure disturbance propagating in the atmosphere. The validity of the model spans the distance from the Earth's surface to 30,000 meters. This includes the troposphere (adiabatic), ozone layer (isothermal), and part of the stratosphere (isothermal). The results of the model derivation in the adiabatic region yield pressure solutions as Bessel functions of the First (J) and Second (Y) Kind of order $-
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Djampa, Tapi William. "Optical properties of nano-objects : from metallic and dielectric nanoparticles to self-assembled molecular systems." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASP016.

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Les propriétés optiques de trois types de nano-objets ont été explorées à l’échelle de l’objet unique, en combinant mesures optiques et topographiques. Leurs trois processus de génération de la lumière ont été étudiés : luminescence plasmonique, génération de seconde harmonique (SHG), fluorescence. En 1er point, nous avons entrepris l’étude la luminescence de nanosphères d’or monocristallines afin d’essayer de comprendre la dynamique de relaxation du plasmon excité. Plus précisément, nous nous sommes intéressés à la corrélation entre l’intensité de luminescence et la section efficace d’absorpt
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Hazami, Zahra. "Development of a solid state amplifier for the 3rd harmonic cavity for ALBA synchrotron light source." Doctoral thesis, Universitat Politècnica de Catalunya, 2020. http://hdl.handle.net/10803/668825.

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In Synchrotron Light Source facilities with high energy and low emittance electron beams different techniques for improving the quality of the synchrotron light for the users are applied. With this aim ALBA, the Spanish 3rd generation Synchrotron Light Source, is developing a 3rd Harmonic radiofrequency (RF) system as a system additional to the main RF system of the storage ring. This system will consist of four normal conducting active cavities at 1.5 GHz that will provide the required 1.1 MV accelerating voltage to the electron beam and will be fed by four 20 kW power transmitters. This pow
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John, Malte [Verfasser]. "Frequency-domain modeling of harmonic interactions in pulse-width modulated voltage-source inverter drives / Malte John." Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2019. http://d-nb.info/1183907060/34.

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Lange, Martin T. "INFLUENCE OF VOLTAGE SOURCE PULSE WIDTH MODULATED SWITCHING AND INDUCTION MOTOR CIRCUIT ON HARMONIC CURRENT CONTENT." Wright State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=wright1230942161.

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Elrayyah, Ali Y. "Modeling and Control of Microgrid-Connected Photo-Voltaic Sources (MCPV)." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1384345552.

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Cetin, Alper. "Design And Implementation Of A Voltage Source Converter Based Statcom For Reactive Power Compensation And Harmonic Filtering." Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608307/index.pdf.

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In this thesis, design and implementation of a distribution-type, voltage source converter (VSC) based static synchronous compensator (D-STATCOM) having the simplest converter and coupling transformer topologies have been carried out. The VSC STATCOM is composed of a +/- 750 kVAr full-bridge VSC employing selective harmonic elimination technique, a low-pass input filter, and a &amp<br>#8710<br>/Y connected coupling transformer for connection to medium voltage bus. The power stage of VSC based STATCOM is composed of water-cooled high voltage IGBT modules switched at 850 Hz for the elimination o
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Uesugi, Y., T. Imai, K. Kawada, and S. Takamura. "3RD HARMONIC OPERATION OF SIT INVERTER RF SOURCE FOR ICRF HEATING IN THE DIVERTOR PLASMA SIMULATOR NAGDIS-Ⅱ." IEEE, 2001. http://hdl.handle.net/2237/7170.

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Željko, Beljić. "Metoda merenja harmonika u realnoj distributivnoj mreži primenom A/D konvertora dvobitne rezolucije." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2016. https://www.cris.uns.ac.rs/record.jsf?recordId=102312&source=NDLTD&language=en.

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U disertaciji je prikazano teorijsko i praktično istraživanje koje seodnosi na utvrđivanje potrebnih i dovoljnih uslova za merenjeharmonika u realnoj elektrodistributivnoj mreži. Cilj istraživanjadoktorske disertacije je formulisanje merne metode i na metodibaziranom hardveru - po mogućnosti minimalne rezolucijeprimenjenih A/D konvertora - praktično dvobitnih za merenjeharmonika u realnoj elektrodistributivnoj mreži. Jednostavanhardver omogućuje jednostavna paralelna merenja, kao i mali brojizvora sistematske greške merenja, što je vrlo primenljivo umerenjima u realnoj distributivnoj mreži.Sim
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Lisius, Peter H. "Core Sources on Harmony as Represented in Ohio Institutions: A Survey of Representative Sources Found in OhioLINK Libraries Associated with NASM-Accredited Music Programs." Kent State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=kent1301330356.

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Potter, Harrison D. P. "On Conformal Mappings and Vector Fields." Marietta College Honors Theses / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=marhonors1210888378.

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Milan, Milovanović. "Metoda merenja moždanih ERP potencijala zasnovana na merenju harmonika epohe." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2015. https://www.cris.uns.ac.rs/record.jsf?recordId=94388&source=NDLTD&language=en.

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<p>U radu je predložena metoda merenja moždanih ERP potencijala zasnovana na merenju harmonika epohe. Predložena metoda je zasnovana na pristupu takozvanog stohastičkog digitalnog merenja na intervalu (SDMI), a hardver sa kojim se ova metoda može implementirati je zasnovan na brzim A/D konvertorima i FPGA strukturi. Metoda je ispitana brojnim simulacijama i eksperimentima i pokazano je da SDMI manjeg broja epoha, sa zadovoljavajućom tačnošću, meri latenciju ERP-a, što je korisno kod vremenski kraćih merenja, kada tačno merenje amplitude ERP komponente nije od značaja.</p>
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Vesna, Ivkov. "Harmonika u narodnoj i školskoj praksi: fenomenologija i pedagoški aspekti." Phd thesis, Univerzitet u Novom Sadu, Doktorske disertacije iz interdisciplinarne odnosno multidisciplinarne oblasti na Univerzitetu u Novom Sadu, 2016. https://www.cris.uns.ac.rs/record.jsf?recordId=101571&source=NDLTD&language=en.

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Ova istraživanja posvećena načinima učenja harmonike svoju opravdanost nalaze u naučnoj sferi, praktičnoj potrebi i ličnom interesovanju istraživača. Naučna opravdanost proističe ne samo iz činjenice da harmonika nije bila dovoljno zastupljena u etnomuzikolo&scaron;kim i pedago&scaron;kim istraživanjima, nego je u ovom slučaju bitan aspekt posmatranja harmonike kao fenomena i načina učenja sviranja ovog instrumenta.Cilj ovog istraživanja je utvrditi pedago&scaron;ko-muzičke karakteristike dva osnovna najče&scaron;će zastuplja modela praktično primenjivih u učenju sviranja harmonike: slobodni-n
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Berglund, Per-Olof. "Investigation of acoustic source characterisation and installation effects for small axial fans." Licentiate thesis, KTH, Vehicle Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1539.

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<p>Fans are often used in equipment such as home appliances andelectronic equipment where the margin of profit is small butcustomers demands on a low noise level are high. Therefore,methods for predicting the noise emitted by an applicationincluding one or several fans are desirable in order toimprove, accelerate and reduce the cost of low-noise design.The Noise Shaping Technology (NST) has been developed withinthe EC-project NABUCCO in order to fulfil the aboverequirements on a prediction method. According to NST, thenoise source (not necessary a fan) is described by one orseveral noise descr
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