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Rozprawy doktorskie na temat „Spectrum analysis”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Dahl, Jason F. "Time Aliasing Methods of Spectrum Estimation." Diss., CLICK HERE for online access, 2003. http://contentdm.lib.byu.edu/ETD/image/etd157.pdf.

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鄧愛紅 and Aihong Deng. "Some studies towards improving positron lifetime spectroscopy for semiconductors." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31214083.

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Bing, Zhou. "Crosshole resistivity and acoustic velocity imaging : S.5-D helmholtz equation modeling and inversion /." Title page, contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09phb613.pdf.

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Chan, Chun-yu. "Mass spectrometric analysis of selected glycoproteins." Thesis, Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B3147942X.

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Tadros-Attalla, Helen. "Power spectrum analysis of redshift surveys." Thesis, University of Oxford, 1996. https://ora.ox.ac.uk/objects/uuid:5a5786db-748e-4c78-bab8-c89a4eda2f07.

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This thesis describes a study of the clustering properties of galaxies and clusters of galaxies as measured by the power spectrum (P(k)) and the counts in cells statistic. The samples used are the optical Stromlo-APM galaxy survey, the APM cluster survey and the IRAS 1.2Jy, QDOT and PSCz surveys. Throughout, N-body simulations, for a variety of cosmological models, are used to test methods and to supplement analytic error estimates. For the Stromlo-APM sample the amplitude of the power spectrum is dependent on galaxy morphology. Early-type galaxies show a higher clustering amplitude than late-

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6

Mendes, Luís Miguel Vinhas. "Measurements and analysis of spectrum activity." Master's thesis, Universidade de Aveiro, 2011. http://hdl.handle.net/10773/7725.

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Mestrado em Engenharia Electrónica e Telecomunicações<br>The dissertation deals with measuring and analyzing spectrum occupancy of a GSM900 band, DCS1800 band and all UMTS bandwidth. A modelization for analog power and binary quantized power is given. In the case of analog power, histograms of the power distribution during one working day are presented. In the case of quantized power the two time statistics, the time period of opportunities distribution and the time between opportunities distribution are presented, described and modeled. The measurement setup is standing in line of sight with

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7

Clayton, Michael J. "Analysis of the ultraviolet emissions of nitric oxide from mid-latitude rocket observations." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA237340.

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Thesis (M.S. in Physics)--Naval Postgraduate School, June 1990.<br>Thesis Advisor(s): Cleary, David D. "June 1990." Description based on signature page. as viewed on October 19, 2009. DTIC Identifiers: Dayglow, emission spectra, ultraviolet spectra, theses. Author(s) subject terms: Ultraviolet spectra, dayglow, nitric oxide. Includes bibliographical references (p. 57-58). Also available in print.

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8

Strachan, Clare, and n/a. "Spectroscopic investigation and quantitation of polymorphism and crystallinity of pharmaceutical compounds." University of Otago. School of Pharmacy, 2005. http://adt.otago.ac.nz./public/adt-NZDU20070427.141108.

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Spectroscopy is increasingly used to investigate and monitor the solid state forms of pharmaceutical materials and products. Spectroscopy�s speed, nondestructive sampling, compatibility with fibre optics and safety also make it attractive for in-line monitoring. In this thesis, the spectroscopic techniques Fourier transform Raman spectroscopy, terahertz pulsed spectroscopy and second harmonic generation were used to characterise and quantify polymorphism and crystallinity of pharmaceutical compounds. Where possible, the multivariate analysis technique partial least squares was used for quant

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9

Youatt, Andrew Pierce. "Analyzing Edgard Varese's Ionisation Using Digital Spectral Analysis." Thesis, The University of Arizona, 2012. http://hdl.handle.net/10150/232473.

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Although Robert Cogan's New Images of Musical Sound won the Society of Music Theory's Outstanding Publication Award in 1987, his musical application of spectral analysis has seen little use over the past 25 years. Spectral images are most effective at illustrating the timbre of sound, and harmony, not timbre, is the key structural component of most Western music. There are, however, some compositions in which timbre plays a critical role. Chief among these is Edgard Varèse's Ionisation, an epic percussion ensemble piece built around 40 instruments and 13 musicians. Previous analyses by Jean-Ch

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10

Daigle, J. A. Bernard. "Development of an ion trap mass spectrometer for elemental analysis." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/30688.

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Mass spectrometry is a widely used technique for the performance of elemental analysis: not only does it provides excellent limits of detection for a large number of elements, but it is also able to provide information about the isotopic distribution of the analyte. The radio-frequency quadrupole ion trap is a relatively new design of mass spectrometer, which offers the ability to confine charged particles for extended periods of time in a well defined volume by applying a radio-frequency oscillating voltage to an arrangement of three electrodes. A mass analysis of the trapped ions can be obta

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11

Bell, Angela. "Analysis of the barley grain protease spectrum." Thesis, Heriot-Watt University, 2012. http://hdl.handle.net/10399/2585.

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Malting is the controlled germination of barley grains, under specific conditions and up to the point of grain modification, and is the keystone of the brewing and distilling industries. Protease enzyme activity is an important constituent of this process as not only does this catalyse the degradation of the grains protein stores, but it also has involvement in other aspects of the germination process such as the activation of β – amylase. However, despite their importance, little is known of the identities and specific roles of the protease classes in the malting and germination process. With

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12

Krishnannair, Syamala. "Multiscale process monitoring with singular spectrum analysis." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5246.

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Thesis (MScEng (Process Engineering))--University of Stellenbosch, 2010.<br>Thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Engineering (Extractive Metallurgy) In the Department of Process Engineering at the University of Stellenbosch<br>ENGLISH ABSTRACT: Multivariate statistical process control (MSPC) approaches are now widely used for performance monitoring, fault detection and diagnosis in chemical processes. Conventional MSPC approaches are based on latent variable projection methods such as principal component analysis and partial lea

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13

Matsuoka, Danilo Hiroshi. "Forecasting brazilian inflation with singular spectrum analysis." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/147410.

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O objetivo deste artigo é avaliar previsões da inflação brasileira a partir do método não-paramétrico de Análise Espectral Singular (SSA). O exercício de previsão utiliza o esquema de janelas rolantes. Diferentes estratégias de combinação de previsões e procedimentos de seleção de variáveis para métodos multivariados foram contempladas. Para robustez, cinco horizontes de previsão foram utilizados. A avaliação das previsões considera diversos procedimentos e medidas estatísticas para oferecer conclusões confiáveis, incluindo razões de erro quadrático médio de previsão, teste de igualdade condic

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14

Sharkasi, Youssif F. "Cooperative spectrum sensing : performance analysis and algorithms." Thesis, University of Leeds, 2014. http://etheses.whiterose.ac.uk/8369/.

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The employment of cognitive (intelligent) radios presents an opportunity to efficiently use the scarce spectrum with the condition that it causes a minimal disturbance to the primary user. So the cognitive or secondary users use spectrum sensing to detect the presence of primary user. In this thesis, different aspects related to spectrum sensing and cognitive radio performance are theoretically studied for the discussion and in most cases, closedform expressions are derived. Simulations results are also provided to verify the derivations. Firstly, robust spectrum sensing techniques are propose

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15

Deng, Cheng. "Time Series Decomposition Using Singular Spectrum Analysis." Digital Commons @ East Tennessee State University, 2014. https://dc.etsu.edu/etd/2352.

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Singular Spectrum Analysis (SSA) is a method for decomposing and forecasting time series that recently has had major developments but it is not yet routinely included in introductory time series courses. An international conference on the topic was held in Beijing in 2012. The basic SSA method decomposes a time series into trend, seasonal component and noise. However there are other more advanced extensions and applications of the method such as change-point detection or the treatment of multivariate time series. The purpose of this work is to understand the basic SSA method through its applic

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16

Mulye, Apoorva. "Power Spectrum Density Estimation Methods for Michelson Interferometer Wavemeters." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35500.

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In Michelson interferometry, many algorithms are used to detect the number of active laser sources at any given time. Conventional FFT-based non-parametric methods are widely used for this purpose. However, non-parametric methods are not the only possible option to distinguish the peaks in a spectrum, as these methods are not the most suitable methods for short data records and for closely spaced wavelengths. This thesis aims to provide solutions to these problems. It puts forward the use of parametric methods such as autoregressive methods and harmonic methods, and proposes two new algorithms

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17

Dorcey, Charles T. "FFT-based spectrum analysis using a Digital Signal Processor." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA401369.

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Thesis (M.S. in Electrical Engineering) Naval Postgraduate School, December 2001.<br>"December 2001." Thesis Advisor(s): Loomis, Herschel H. Includes bibliographical references (p. 55). Also available online.

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18

Rozario, Hoimonti Immaculata. "Spectroscopic study of acetylene and hydrogen cyanide." Thesis, Lethbridge, Alta. : University of Lethbridge, Dept. of Physics and Astronomy, c2012, 2012. http://hdl.handle.net/10133/3415.

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High-resolution molecular spectroscopy has been used to study acetylene line parameters and emission spectra of hydrogen cyanide. All acetylene spectra were recorded in our laboratory at the University of Lethbridge using a 3-channel tuneable diode laser spectrometer. N2-broadened line widths and N2-pressure induced line shifts have been measured for transitions in the v1+v3 band of acetylene at seven temperatures in the range 213–333K to obtain the temperature dependences of broadening and shift coefficients. The Voigt and hard-collision line profile models were used to retrieve the line para

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19

Walsh, Penelope Jane, and n/a. "Modelling and spectroscopy of polypyridyl and porphyrin complexes for electroluminescence and solar cell applications." University of Otago. Department of Chemistry, 2007. http://adt.otago.ac.nz./public/adt-NZDU20070927.151236.

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This thesis reports the spectroscopic and computational studies of two classes of compounds, which have applications in new optoelectronic materials technology. Substituted ligands of dipyrido-[3,2a:2�,3�c]phenazine (dppz), and their Cu(I), Re(I) and Ru(II) complexes have utility in organic electroluminescent devices. A series of Zn(II) tetraphenylporphyrins with conjugated functional groups at the β-position have been used with success in liquid heterojunction dye-sensitized solar cells. The vibrational spectra and optoelectronic properties of the two classes were investigated using Raman, re

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20

Reiss, Boris. "Development of a two-tone frequency modulation tunable diode laser absorption spectrometer (TTFM-TDLAS) for measuring methane fluxes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0016/MQ56199.pdf.

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21

Medina, Gerardo Juan. "Ligand isotope vibrational spectroscopic and DFT studies of Pt(II) and Cu(I) complexes." Thesis, Rhodes University, 2005. http://hdl.handle.net/10962/d1004982.

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Ligand-isotope labelling studies were performed on Zeise’s salt derivatives with pyridine N-oxide and quinoline N-oxide, their perdeuterated and O-18 isotopomers, C₂D₄ and ¹³CO, and the results of the vibrational analyses are reported. The isotopomers are modelled utilizing DFT calculations at the B3LYP level with the 6-31 G** basis set, and a pseudopotential level for the Pt atom. The calculated and observed structure and vibrational spectra correlate well. The crystal structures of [Pt(C₂2H₄)(pyO)Cl₂] and [Pt(CO)(quinO)Br₂] are reported. The frequency for the νPt-O vibration, ambiguously ass

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22

Ovenden, Simon P. B. "Preparation of a natural product extract library for investigation against disease states specific to defence health a mini long range research project /." Fishermans Bend Victoria : Defence Science and Technology Organisation, 2009. http://hdl.handle.net/1947/9861.

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23

Luo, Yong. "A spread spectrum ranging system, analysis and simulation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq30512.pdf.

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24

Colice, Christopher Max. "Transformations in optics for radio-frequency spectrum analysis." Connect to online resource, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3256393.

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25

Wilson, Catherine. "Further analysis of the electronic spectrum of FeH." Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365782.

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Cardenas, Juarez Marco Aurelio. "Spectrum sensing and throughput analysis for cognitive radio." Thesis, University of Leeds, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.582744.

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Cognitive radio (CR) technology offers an innovative solution to improve spectrum efficiency, thus satisfying the greater demand to be placed on the electromagnetic spectrum by future wireless networks and communications. In this sense, the ulti- mate purpose of the spectrum sensing feature in cognitive radio is to determine the absence or presence of licensed users' signals in a frequency band of interest. More- over, due to the wide variety of scenarios in which cognitive radios may operate and the random nature of wireless channels, spectrum sensing algorithms are expected to perform well a

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27

Barkhuizen, Marlize. "Analysis of process data with singular spectrum methods." Thesis, Stellenbosch : University of Stellenbosch, 2003. http://hdl.handle.net/10019.1/16252.

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Thesis (MScIng)--University of Stellenbosch, 2003.<br>ENGLISH ABSTRACT: The analysis of process data obtained from chemical and metallurgical engineering systems is a crucial aspect of the operating of any process, as information extracted from the data is used for control purposes, decision making and forecasting. Singular spectrum analysis (SSA) is a relatively new technique that can be used to decompose time series into their constituent components, after which a variety of further analyses can be applied to the data. The objectives of this study were to investigate the abilities of SS

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28

Loureiro, Arthur Eduardo da Mota. "Galaxy Power Spectrum Analysis: A Monte-Carlo Approach." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-06072015-060434/.

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Many galaxy surveys are planned to release their data over the next few years. Each different survey has its own geometrical limitations, which reflects upon the data as a selection function the spatial distribution of certain types of galaxies. Given a galaxy map (real or mock), the main goal of this work is to obtain information about how the selection function affects some of the cosmological parameters which can be probed from large-scale structure. A Monte-Carlo Markov Chain method is proposed in order to probe the effects of considering the selection functions parameters as nuisance par

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29

Rahmani, Donya. "Bayesian singular spectrum analysis with state dependent models." Thesis, Bournemouth University, 2017. http://eprints.bournemouth.ac.uk/29543/.

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The analysis of time series using Singular Spectrum Analysis has become an important area of statistics with application in a variety of fields such as economics, geophysics, engineering, medicine and many others. In fact, in this method there is no need to make any statistical assumptions such as the stationarity of the series or normality of the residuals. Therefore, SSA is recognised as an extremely practical tool which can be used to solve problems without considering any parametric model. At its core SSA depends on an eigenvector decomposition of the covariance matrix of a time series whi

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Silva, Agampodige Emmanuel Diyanth Sirimal. "Theoretical advancements and applications in singular spectrum analysis." Thesis, Bournemouth University, 2016. http://eprints.bournemouth.ac.uk/25043/.

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Singular Spectrum Analysis (SSA) is a nonparametric time series analysis and forecasting technique which has witnessed an augment in applications in the recent past. The increased application of SSA is closely associated with its superior filtering and signal extraction capabilities which also differentiates it from the classical time series methods. In brief, the SSA process consists of decomposing a time series for signal extraction and then reconstructing a less noisy series which is used for forecasting. The aim of this research is to develop theoretical advancements in SSA, supported by e

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31

Hawwari, Majd I. "Photon Beam Spectrum Characterization Using Scatter Radiation Analysis." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1265986558.

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32

Isbiliroglu, Levent. "Strategy for Selecting Input Ground Motion for Structural Seismic Demand Analysis." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAU009/document.

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Les signaux accélérométriques enregistrés lors de l’occurrence d’un événement sismique est très large présentent une forte variabilité, par conséquent ils ne sont pas utilisé dans les analyse dynamiques de tenue sismique des structures. En effet, l’utilisation des accélérogrammes réels, pour les analyses dynamiques non linéaires, s’avère couteuse en termes de temps de calcul. La pratique courante prévoit la minimisation (voir suppression) de telle variabilité, mais les conséquences d’une telle opération sur la réponse des structures ne sont pas clairement indiquées. L’étude ci-présente a pour

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33

Snoswell, Mark Andrew. "Novel approaches to large scale protein purification and analysis /." Title page, contents and summary only, 1990. http://web4.library.adelaide.edu.au/theses/09PH/09phs673.pdf.

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Thesis (Ph. D.)--University of Adelaide, Dept. of Biochemistry, 1992.<br>Cover title: Novel approaches to protein purification and analysis: counter-current electrophoretic filtering: spectral enhancement. Spine title: Protein purification and analysis. Includes bibliographical references.

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34

Harvey, Pierre Dominique. "Applications of vibrational spectroscopy and NMR spin-lattice relaxation time measurements to organometallic and organic molecular crystals." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=73986.

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35

Bennia, Abdelhak. "Optimal filters for deconvolution of transient signals in the presence of noise." Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-09162005-115009/.

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Wentzel, Mauritz. "Identification and characterization of novel oncology related platinum complexes using chromatographic and mass spectrometric techniques." Thesis, Nelson Mandela Metropolitan University, 2008. http://hdl.handle.net/10948/715.

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In this thesis mass spectral and chromatographic techniques were developed and applied to identify and characterise numerous novel platinum(II) and (IV) compounds designed as anticancer agents. In a novel method for the synthesis of cis-oxalato(trans- -1,2- cyclohexanediamine)platinum(II) or oxaliplatin these techniques could be applied to differentiate between the molecular complex and the autoionised analogue (viz. Ptdach2 2+Ptox2 2-). In another novel synthetic method for the same compound the ligand exchange reactions at various temperatures could be investigated and kinetic curves obtaine

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Yilmaz, Nihal. "Spectral Characteristics Of Wind Waves In The Eastern Black Sea." Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/3/12608614/index.pdf.

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Wind waves are highly complex, random phenomena. One way to describe the irregular nature of the sea surface is the use of wave energy spectrum. Spectral information for wind waves in the Black Sea is extremely limited. Knowledge on spectral characteristics of wind waves would contribute to scientific, engineering and operational coastal and marine activities in the Black Sea. The aim of the present thesis is to investigate characteristics of wind wave spectra for the Eastern Black Sea. This would allow detailed understanding of the nature of the waves occurring in this enclosed basin. Long-te

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López, Benítez Miguel. "Spectrum usage models for the analysis, design and simulation of cognitive radio networks." Doctoral thesis, Universitat Politècnica de Catalunya, 2011. http://hdl.handle.net/10803/33282.

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The owned spectrum allocation policy, in use since the early days of modern radio communications, has been proven to effectively control interference among radio communication systems. However, the overwhelming proliferation of new operators, innovative services and wireless technologies during the last years has resulted, under this static regulatory regime, in the depletion of spectrum bands with commercially attractive radio propagation characteristics. An important number of spectrum measurements, however, have shown that spectrum is mostly underutilized, thus indicating that the virtual s

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Moalusi, Matlhodi Salamina. "Selected applications of sequential injection analysis." Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-08212007-155923.

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Van, Wyck Neal Edward. "MULTIPHOTON SPECTROSCOPY OF THIN FILMS AND SURFACES (NONLINEAR, WAVEGUIDES, INTERFACES)." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/291294.

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Veltkamp, David James. "Energy dependent ion scattering spectroscopy : a chemometric study of its analytical utility /." Thesis, Connect to this title online; UW restricted, 1986. http://hdl.handle.net/1773/8584.

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Mustonen, M. (Miia). "Analysis of recent spectrum sharing concepts in policy making." Doctoral thesis, Oulun yliopisto, 2017. http://urn.fi/urn:isbn:9789526216645.

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Abstract During the last couple of decades a lot of research efforts have been spent on developing different spectrum sharing concepts. As the traditional regulatory methods for spectrum allocation are proving inadequate in responding to a growing need for mobile spectrum in a timely manner and finding spectrum for exclusive use is getting increasingly difficult, the political atmosphere is also becoming more and more receptive to new innovative spectrum sharing concepts that increase the efficiency of spectrum use. These concepts also provide regulatory authorities an opportunity to fundament

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43

Liggins, Florence. "The spectrum and term analysis of singly-ionised manganese." Thesis, Imperial College London, 2017. http://hdl.handle.net/10044/1/59134.

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This thesis reports on the term analysis of singly-ionised manganese carried out in order to improve the accuracy and completeness of available Mn II atomic wavelengths and energy levels, for astrophysical applications. An extensive analysis of the Mn spectrum was carried out using high-resolution Fourier Transform (FT) spectra, supplemented with grating measurements, of Mn(Ne) and Mn(Ar) hollow cathode discharge sources, over the range 1820 – 121728 cm-1. The analysis of these spectra has resulted in accurate wavelength measurements for a total of 2360 Mn II lines of which 1219 are measured t

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44

Armour, W. "An analysis of the hadronic spectrum from lattice QCD." Thesis, Swansea University, 2004. https://cronfa.swan.ac.uk/Record/cronfa42952.

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In chapter one I begin by discussing the basic ideas of quantum field, theory (QFT). I provide a review of symmetries in physics and then move on to discuss the quark model. Chapter two is a review of lattice gauge theory with particular attention paid to lattice QCD. I begin by discussing lattice QCD and then discuss some of the associated problems. I move on to discuss gauge fields on the lattice along with free lattice fermions. I then use this to define the lattice QCD action. I conclude this chapter by discussing how to reproduce the correct continuum physics. Chapter three discusses the

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45

Xie, Qing Yan. "Performance Analysis of Opportunistc Spectrum Access on Cognitive Radio." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1273173530.

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Bie, Yifeng. "Functional principal component analysis based machine learning algorithms for spectral analysis." Thesis, 2021. http://hdl.handle.net/1828/13372.

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The ability to probe molecular electronic and vibrational structures gives rise to optical absorption spectroscopy, which is a credible tool used in molecular quantification and classification with high sensitivity, low limit of detection (LoD), and immunity to electromagnetic noises. Spectra are sensitive to slight analyte variations, so they are often used to identify a sample’s components. This thesis proposes several methods for quick classification and quantification of analysts based on their absorbance spectra. functional Principal Component Analysis (fPCA) is employed for feature

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Wu, Jin-Tzuoh, and 吳金座. "Spectrum Analysis on Time Domain." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/22559435038823006617.

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Ning, Chia-Ching, and 寧家慶. "Optimization of Harmonic Spectrum Analysis." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/00025188122400842980.

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碩士<br>國立中山大學<br>電機工程學系<br>87<br>Traditionally, the analysis technique of harmonic has been done by Fast Fourier Transform (FFT). It has advantage of fast computation but many limitations. Consequently, this paper proposes a method to improve FFT errors significantly. This method has been divided into three stages. Firstly, the paper uses a set of simple formula to obtain frequent and amplitude of signal. Secondly, find optimized parameters to make new spectrum match with signal characteristic. Finally, make using of the set of optimized parameters to adjust original spectrum, which

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Bing, Zhou. "Crosshole resistivity and acoustic velocity imaging : 2.5-D helmholtz equation modeling and inversion / by Zhou Bing." Thesis, 1998. http://hdl.handle.net/2440/19295.

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Bibliography: leaves 239-248.<br>viii, 248 leaves : ill. ; 30 cm.<br>Shows that the normalised Fourier/Hartley spectral data can be used for imaging when the seismic source wavelet is unknown.<br>Thesis (Ph.D.)--University of Adelaide, Dept. of Geology and Geophysics, 1998

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Cheng, Kai-Yin, and 鄭凱尹. "Investigating image velocimetry by spectrum analysis." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/83993366579606097537.

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碩士<br>國立臺灣大學<br>土木工程學研究所<br>103<br>In recent years, debris-flow hazards occur frequently in Taiwan and cause casualties and property loss in many residential areas. In order to minimize the effect of such hazard, it requires more understanding of debris-flow’s behavior. The research is aim to develop an innovative image velocimetry, using spectrum analysis in the flow field. We took both celerity and water velocity into account to analyze the signal reflected from the water surface. After the images were transformed to gray level, the gray value represents the information of fluid motion. We f

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