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Dissertations / Theses on the topic 'Fourier spectrum'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Whittle, Gruffudd Hannah Rebecca. "Relaxation spectrum recovery using Fourier transforms." Thesis, Aberystwyth University, 2012. http://hdl.handle.net/2160/f2b30f89-dc62-4038-83c9-1857eca8a2b5.

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In this thesis we consider the problem of recovering the relaxation spectrum from the storage and loss moduli. We invert an integral equation using Fourier transforms. Recovering the relaxation spectrum is an inverse, ill-posed problem and hence regularisation methods must be used to try and obtain the relaxation spectrum. We are particularily interested in establishing properties of the relaxation spectrum. We note from the literature that there are results of compact support for the relaxation spectrum; we review to what extent and in what sense, these results are valid. We consider the meth

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2

Tsakiroglou, Evangelia. "Wavelet-based parametric spectrum estimation." Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342234.

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3

Tavakkolnia, Iman. "Advanced optical fibre communication via nonlinear Fourier transform." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/29606.

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Optical fibre communication using the Nonlinear Fourier transform (NFT) is one of the potential solutions to tackle the so-called capacity crunch problem in long-haul optical fibre networks. The NFT transforms the nonlinear propagation of temporal signal, governed by the nonlinear Schr ̈odinger equation (NLSE), into simple linear evolutions of continuous and discrete spectra in the so-called nonlinear spectral domain. These spectra and the corresponding nonlinear spectral domain, defined by the NFT, are the generalized counterparts of the linear spectrum and frequency domain defined by the ord

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4

Zhang, Xuhong Ph D. Massachusetts Institute of Technology. "Intelligible models for learning categorical data via generalized fourier spectrum." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/121725.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 167-170).<br>Machine learning techniques have found ubiquitous applications in recent years and sophisticated models such as neural networks and ensemble methods have achieved impressive predictive performances. However, these models are hard to interpret and usually used as a blackbox. In applications where an explanation is required in addition to a prediction, linear models (e.g. Linear R

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5

Blackwell-Whitehead, Richard John. "High resolution fourier transform spectrometry of the spectrum of neural manganese." Thesis, Imperial College London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.408279.

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6

Stark, Anthony. "Phase Spectrum Based Speech Processing and Spectral Energy Estimation for Robust Speech Recognition." Thesis, Griffith University, 2011. http://hdl.handle.net/10072/366490.

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Speech is the dominant mode of communication between humans; simple to learn, easy to use and integral for modern life. Given the importance of speech, development of a human-machine speech interface has been greatly anticipated. This challenging task is encapsulated in the digital speech processing research field. In this dissertation, two specific areas of research are considered: 1) the use of short-time Fourier spectral phase in digital speech processing and 2) use of the minimum mean square error spectral energy estimator for environment-robust automatic speech recognition. In speech proc

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7

Zaks, Michael. "Fractal Fourier spectra in dynamical systems." Thesis, [S.l.] : [s.n.], 2001. http://pub.ub.uni-potsdam.de/2002/0019/zaks.ps.

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8

Hong, Quanhua Claire. "SAR processing direct spectrum formation and image reconstruction /." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0004/MQ42575.pdf.

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9

陳銚鴻 and Siu-hung Chan. "Spectrum analysis using time domain fourier filter outputs to improve FFT estimates." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1988. http://hub.hku.hk/bib/B31208502.

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10

Chan, Siu-hung. "Spectrum analysis using time domain fourier filter outputs to improve FFT estimates /." [Hong Kong : University of Hong Kong], 1988. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12430882.

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11

Tian, Jialin. "Reconstruction of irregularly sampled interferograms in imaging Fourier transform spectrometry." Diss., Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-06072004-131354/unrestricted/tian%5Fjialin%5F200405%5Fphd.pdf.

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12

Li, Gang. "Fourier Transform Spectroscopy of Selected Transient Species." Thesis, University of Waterloo, 2003. http://hdl.handle.net/10012/1230.

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The procedures and results of experimental and/or theoretical studies of four transient molecules, GeO, WO, BeH, and MgH are reported in the thesis. Two of them, GeO and WO, are diatomic molecules composed of relatively heavy atoms, and the other two are diatomic molecules with hydrogen as one of their component atoms. The GeO species was generated using a high temperature furnace. The rovibrational spectrum of five isotopomers were detected in emission using a Bruker IFS 120 HR Fourier transform spectrometer. Combined-isotopomer Dunham-type molecular constants have been derived

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13

Fabre, David H. "Parameterized Spectral Bathymetric Roughness Using the Nonequispaced Fast Fourier Transform." ScholarWorks@UNO, 2015. http://scholarworks.uno.edu/td/2070.

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The ocean and acoustic modeling community has specifically asked for roughness from bathymetry. An effort has been undertaken to provide what can be thought of as the high frequency content of bathymetry. By contrast, the low frequency content of bathymetry is the set of contours. The two-dimensional amplitude spectrum calculated with the nonequispaced fast Fourier transform (Kunis, 2006) is exploited as the statistic to provide several parameters of roughness following the method of Fox (1996). When an area is uniformly rough, it is termed isotropically rough. When an area exhibits lineation

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14

Lee, Jim Pak-Yee Carleton University Dissertation Engineering Electrical. "Acoustooptic fourier transforming configuration for spectrum analysis and determination of direction-of-arrival." Ottawa, 1986.

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15

Miar, Yasin. "Improved Wideband Spectrum Sensing Methods for Cognitive Radio." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23333.

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Abstract Cognitive Radio (CR) improves the efficiency of spectrum utilization by allowing non- licensed users to utilize bands when not occupied by licensed users. In this thesis, we address several challenges currently limiting the wide use of cognitive radios. These challenges include identification of unoccupied bands, energy consumption and other technical challenges. Improved accuracy edge detection techniques are developed for CR to mitigate both noise and estimation error variance effects. Next, a reduced complexity Simplified DFT (SDFT) is proposed for use in CR. Then, a sub-Nyquist ra

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16

Wellard, Stanley James. "Tropospheric Spectrum Estimations Comparing Maximum Likelihood with Expectation Maximization Solutions and Fast Fourier Transforms." DigitalCommons@USU, 2007. https://digitalcommons.usu.edu/etd/264.

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The FIRST program (Far Infrared Spectroscopy in the Troposphere) was created as an Instrument Incubator Program (IIP) by NASA Langley to demonstrate improved technology readiness levels (TRLs) for two technologies needed in the design of new imaging Fourier transform spectrometers (IFTS). The IIP IFTS was developed at the Space Dynamics Laboratory and ﬂown to an altitude of 103,000 feet on an instrumented NASA balloon payload. The sensor collected approximately 15,000 interferograms during its 6-hour ﬂight. Fourier transforms (FFT) produced acceptable results except for noise equivalent temper

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17

Layfield, Steven C. "Detection of frequency-hopped signals embedded in non-stationary interference." Monterey, Calif. : Naval Postgraduate School, 2008. http://edocs.nps.edu/npspubs/scholarly/theses/2008/Dec/08Dec%5FLayfield.pdf.

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Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, December 2008.<br>Thesis Advisor(s): Robertson, R. Clark. "December 2008." Description based on title screen as viewed on January 29, 2009. Includes bibliographical references (p. 35). Also available in print.

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18

Rosenthal, Glenn, and Thomas Salley. "USING THE FFT FOR DSP SPECTRUM ANALYSIS: A TELEMETRY ENGINEERING APPROACH." International Foundation for Telemetering, 1990. http://hdl.handle.net/10150/613797.

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International Telemetering Conference Proceedings / October 29-November 02, 1990 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>The Fast Fourier Transform (FFT) converts digitally sampled time domain data into the frequency domain. This paper will provide an advanced introduction for the telemetry engineer to basic FFT theory and then present and explain the different user preprocessing options that are available when using the FFT. These options include: using windowing functions, “zero filling” for frequency data interpolation, and setting the frequency resolution of the FFT res

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19

Bolton, Maxwell James. "The earth's outgoing longwave radiation spectrum as viewed by a space-borne Fourier transform spectrometer." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434346.

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20

Losik, Len. "Adapting Fourier Analysis for Predicting Earth, Mars and Lunar Orbiting Satellite's Telemetry Behavior." International Foundation for Telemetering, 2011. http://hdl.handle.net/10150/595773.

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ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada<br>Prognostic technology uses a series of algorithms, combined forms a prognostic-based inference engine (PBIE) for the identification of deterministic behavior embedded in completely normal appearing telemetry from fully functional equipment. The algorithms used to define normal behavior in the PBIE from which deterministic behavior is identified can be adapted to quantify normal spacecraft telemetry behavior

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21

Losik, Len. "Adapting Fourier Analysis for Predicting Earth, Mars and Lunar Orbiting Satellite's Telemetry Behavior." International Foundation for Telemetering, 2010. http://hdl.handle.net/10150/604279.

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ITC/USA 2010 Conference Proceedings / The Forty-Sixth Annual International Telemetering Conference and Technical Exhibition / October 25-28, 2010 / Town and Country Resort & Convention Center, San Diego, California<br>Prognostic technology uses a series of algorithms, combined forms a prognostic-based inference engine (PBIE) for the identification of deterministic behavior embedded in completely normal appearing telemetry from fully functional equipment. The algorithms used to define normal behavior in the PBIE from which deterministic behavior is identified can be adapted to quantify normal s

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22

Hansen, Gary Bruce. "The infrared absorption spectrum of carbon dioxide ice /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/6808.

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23

Leung, Cleo D. M. "Overtone Characterization of Garner Headjoints Using Spectrographic Analysis and Fast Fourier Transforms." University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396523100.

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24

Sang, Shu-Chih. "The in-situ infrared microspectroscopy of bacterial colonies on agar plates." Virtual Press, 1996. http://liblink.bsu.edu/uhtbin/catkey/1014855.

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The purpose of this research was to develop a more convenient method to distinguish bacteria using Fourier transform infrared (FT-IR) spectroscopy. The specular reflectance infrared spectra of bacterial colonies were obtained in-situ, without removing them from the agar growth media. The spectra of a variety of bacterial species were obtained by the infrared microscope and then were analyzed by factor analysis. Using this statistical method in conjunction with in-situ sampling we evaluated how well Grampositive species were sorted from Gram-negative species. Also, how the type of agar used and

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25

Scaife, Bradley J. "DOPPLER SHIFTED SPREAD SPECTRUM CARRIER RECOVERY USING REAL-TIME DSP TECHNIQUES." International Foundation for Telemetering, 1998. http://hdl.handle.net/10150/607365.

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International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California<br>In any satellite communication, the Doppler shift associated with the satellite’s position and velocity must be calculated in order to determine the carrier frequency. If the satellite state vector is unknown then some estimate must be formed of the Doppler-shifted carrier frequency. One elementary technique is to examine the signal spectrum and base the estimate on the dominant spectral component. If, however, the carrier is spread (as in m

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26

North, Jan Arthur. "Fourier image synthesis and slope spectrum analysis of deepwater, wind-wave scenes viewed at Brewster's angle /." Online version of thesis, 1989. http://hdl.handle.net/1850/11520.

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27

Thibodeau, Brian Michael. "A Framework for Cooperative Wideband Spectrum Sensing Using the Robust Fast Fourier Aliasing-based Sparse Transform." Master's thesis, Temple University Libraries, 2016. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/389212.

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Electrical and Computer Engineering<br>M.S.E.E.<br>This research considers the problem of cooperatively identifying the active bands in a wideband spectrum using the sparse Fast Fourier Transform (sFFT). Existing research has focused primarily on Compressed Sensing (CS) and Multi-Coset (MC) sampling, but recent developments in the sFFT have shown that a sparsely occupied spectrum can be efficiently reconstructed using multiple co-prime analog-to-digital converters (ADC) that sample below the Nyquist rate. Specifically, this research utilizes the Robust Fast Fourier Aliasing-based Sparse Transf

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28

Tussing, Timothy Mark. "Analysis of Effects on Sound Using the Discrete Fourier Transform." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338371732.

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29

Wojcicki, Kamil Krzysztof. "Role of the Short-Time Phase Spectrum in Speech Processing." Thesis, Griffith University, 2011. http://hdl.handle.net/10072/366376.

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Majority of speech processing algorithms that employ the short-time Fourier transform process the short-time magnitude spectrum, while either discarding the short-time phase spectrum or leaving it unchanged. This is in-part due to a long-standing belief among speech researchers that the short-time phase spectrum, computed over small analysis window durations of 20–40 ms, contains little useful information and is thus (mostly) unimportant for speech processing (though it is accepted that the phase spectrum does contribute to some extent to naturalness and quality aspects of speech). The above b

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30

Roque, Sol Marco A. "A study of the sensitivity of topological dynamical systems and the Fourier spectrum of chaotic interval maps." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1810.

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31

Alsteris, Leigh, and n/a. "Short-Time Phase Spectrum in Human and Automatic Speech Recognition." Griffith University. School of Microelectronic Engineering, 2006. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20060727.090845.

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Incorporating information from the short-time phase spectrum into a feature set for automatic speech recognition (ASR) may possibly serve to improve recognition accuracy. Currently, however, it is common practice to discard this information in favour of features that are derived purely from the short-time magnitude spectrum. There are two reasons for this: 1) the results of some well-known human listening experiments have indicated that the short-time phase spectrum conveys a negligible amount of intelligibility at the small window durations of 20-40 ms used for ASR spectral analysis, and 2) u

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32

Alsteris, Leigh. "Short-Time Phase Spectrum in Human and Automatic Speech Recognition." Thesis, Griffith University, 2006. http://hdl.handle.net/10072/366602.

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Incorporating information from the short-time phase spectrum into a feature set for automatic speech recognition (ASR) may possibly serve to improve recognition accuracy. Currently, however, it is common practice to discard this information in favour of features that are derived purely from the short-time magnitude spectrum. There are two reasons for this: 1) the results of some well-known human listening experiments have indicated that the short-time phase spectrum conveys a negligible amount of intelligibility at the small window durations of 20-40 ms used for ASR spectral analysis, and 2) u

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33

Richard, Cyril. "Spectroscopie électronique et effet zeeman dans le radical NiH." Phd thesis, Université Claude Bernard - Lyon I, 2010. http://tel.archives-ouvertes.fr/tel-00595685.

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Cette thèse s'appuie sur la spectroscopie de NiH établie à la fin des années 1980 et au début des années 1990, principalement par le groupe du Pr. R. W. Field au MIT. Les mesures expérimentales ont amélioré de manière significative les travaux antérieurs, tant en spectroscopie en champ nul qu'en spectroscopie Zeeman. Le radical NiH est obtenu avec une source à décharge à température ambiante (310 K). Les radicaux formés dans la décharge sont excités par un laser continu à colorant et étudiés soit en spectroscopie d'excitation laser soit en fluorescence dispersée. Un circuit magnétique à aimant

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34

Locklin, Scott Christopher. "Fourier transform spectroscopy in the soft X-ray regime : an instrument for the study of the spectrum of helium /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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35

Hawat, Toufic-Michel. "Etude des constituants de la stratosphère par spectrométrie infrarouge : héliostat couplé a un interféromètre en vue de l'exploitation des spectres atmosphériques." Valenciennes, 1996. https://ged.uphf.fr/nuxeo/site/esupversions/47ff0273-a089-46dd-8879-dfc34730704a.

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Les recherches dans le domaine de la physico-chimie atmosphérique se sont fortement développées ces dernières années afin de contribuer à une meilleure compréhension des phénomènes chimiques, dynamiques et radiatifs qui déterminent l'état actuel et peuvent affecter l'évolution future de l'atmosphère terrestre. Parmi les méthodes permettant d'accéder à la mesure des constituants atmosphériques, la spectrométrie de Fourier infrarouge sous ballon stratosphérique en utilisant le soleil comme source permet de détecter et de déduire les concentrations d'un grand nombre d'espèces à l'état de trace. C

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36

Joel, Sandé. "Jodivi: An Application to Target Sound Sensitivity Features in People with Autism Spectrum Disorder." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36516.

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The main objective of this research work is to provide a tool to prevent the severe hearing sensitivity to patients with Autism Spectrum Disorder (ASD) experience. The key element in our work is to identify commonalities between sounds that bother an ASD patient, and implement a procedure using PC or smartphone as platform - based on those results, which will lead to the prevention of “bothersome” sounds for the ASD sufferer and later to desensitization. To do so, we implemented a first application that evaluates the auditory sound sensitivity of a person, and a second application that determi

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37

Carvalho, Luis Felipe das Chagas e. Silva de [UNESP]. "Análise de queilite actínica por espectroscopia micro FT-IR." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/104569.

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Made available in DSpace on 2014-06-11T19:33:24Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-06-20Bitstream added on 2014-06-13T20:24:54Z : No. of bitstreams: 1 carvalho_lfcs_dr_sjc.pdf: 1285800 bytes, checksum: e974f0ebe5242c6acaeec015aadb3843 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>A queilite actínica (QA) é uma lesão considerada potencialmente cancerizável, localizada principalmente em lábio inferior e causada pela exposição crônica à radiação UV. A Espectroscopia FT-IR forne

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38

Zhang, Xiaojun. "Analysis and pre-processing of signals observed in optical feedback self-mixing interferometry." School of Electrical, Computer and Telecommunications Engineering - Faculty of Informatics, 2008. http://ro.uow.edu.au/theses/102.

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Since the laser technlology has been applied for providing highly precise measurement, laser interferometry based systems have found increasing applications in the distance, displace measurement and related applications. Recently, a simple construction of laser interferometer with the use of so-called optical feedback self-mixing interferometry (OFSMI) effect has become a popular technique in optical measurement field. In comparison with conventional interferometer, OFSMI enables simple, compact size and cheap interferometer devices to be implemented.This thesis studies the spectrum characteri

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39

Harris, Christopher John. "The development of an ultra-violet Fourier transform spectrometer and its application to the study of the iron spectrum at high resolution." Thesis, Imperial College London, 1986. http://hdl.handle.net/10044/1/38028.

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40

Keppler, Karen A. "An all-vacuum high resolution fourier transform spectrometer with absorption pathlengths up to 352 M : acetylene spectrum at 1.4-1.7 (Mu) M /." The Ohio State University, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487862399447491.

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41

Carvalho, Luis Felipe das Chagas e. Silva de. "Análise de queilite actínica por espectroscopia micro FT-IR /." São José dos Campos : [s.n.], 2011. http://hdl.handle.net/11449/104569.

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Orientador: Janete Dias Almeida<br>Banca: Luiz Antonio Guimarães Cabral<br>Banca: Cristina Kurachi<br>Banca: Luciane Dias de Oliveira<br>Banca: Fábio Ramôa Pires<br>Resumo: A queilite actínica (QA) é uma lesão considerada potencialmente cancerizável, localizada principalmente em lábio inferior e causada pela exposição crônica à radiação UV. A Espectroscopia FT-IR fornece informações moleculares através de fenômenos ópticos observado pela vibração de suas moléculas. Tem sido empregada em estudos biológicos para a caracterização de alterações neoplásicas. No entanto, são escassos os estudos que

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42

Bača, Petr. "Aplikace pro dvoukanálovou analýzu elektroakustického systému v reálném čase." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-401992.

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Master’s thesis contains the theory for realization of the researched software. Besides other, it describes Fourier transform, frequency response function, coherence, impulse response and group delay. Real life application of the software is discussed. Software is invented in the MatLab environment. Further, thesis provides testing of the software and shows its commented outcomes.

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43

Rudžík, Matej. "Automatické vyhodnocení signálů s využitím Fourierovy transformace." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417782.

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This master’s thesis deals with signal evaluation using Fourier transform. In the theoretical section, different methods of signal analysis with an emphasis on a Fast Fourier Transform are described. Theoretical section also contains description of common machinery faults and their diagnosis using frequency spectrum analysis. In the practical section, an algorithm for signal evaluation with an emphasis on coherence condition was designed in the Matlab environment. This algorithm was later used to evaluate submitted signals.

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44

Champion, Patrick D. "An analysis of Fourier transform infrared spectroscopy data to predict herpes simplex virus 1 infection." Atlanta, Ga. : Georgia State University, 2008. http://digitalarchive.gsu.edu/math_theses/62/.

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Thesis (M.S.)--Georgia State University, 2008.<br>Title from title page (Digital Archive@GSU, viewed July 29, 2010) Yu-Sheng Hsu, committee chair; Gary Hastings, Jun Han, committee members. Includes bibliographical references (p. 41).

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45

Losik, Len. "Using Telemetry Science, An Adaptation of Prognostic Algorithms for Predicting Normal Space Vehicle Telemetry Behavior from Space for Earth and Lunar Satellites and Interplanetary Spacecraft." International Foundation for Telemetering, 2009. http://hdl.handle.net/10150/606150.

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ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, Nevada<br>Prognostic technology uses a series of algorithms, combined forms a prognostic-based inference engine (PBIE) for the identification of deterministic behavior embedded in completely normal appearing telemetry from fully functional equipment. The algorithms used to define normal behavior in the PBIE from which deterministic behavior is identified can be adapted to quantify normal spacecraft tele

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46

Vaucher, Alessandra Tolfo Ledur. "Avaliação dos métodos de espectroscopia Raman, de espectroscopia de absorção de infravermelho e testes de nanodureza para o estudo de cones de guta-percha." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/143624.

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O objetivo deste estudo foi avaliar os métodos de espectroscopia Raman e espectroscopia de absorção de infravermelho (FTIR) na identificação da degradação do trans-1,4-poliisopreno de cones de guta-percha sem uso, e o comportamento do material após diferentes períodos decorridos de sua fabricação por testes de indentação de nanodureza (IHT). Para a análise, foram selecionadas 27 amostras de cones de guta-percha sem uso, de 5 marcas comerciais vendidas no mercado brasileiro, cedidas por Cirurgiões-dentistas. As amostras foram avaliadas através de espectroscopia Raman, com base no sinal da ligaç

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47

Cheng, Hui. "Data integration and visualization for systems biology data." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/77250.

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Systems biology aims to understand cellular behavior in terms of the spatiotemporal interactions among cellular components, such as genes, proteins and metabolites. Comprehensive visualization tools for exploring multivariate data are needed to gain insight into the physiological processes reflected in these molecular profiles. Data fusion methods are required to integratively study high-throughput transcriptomics, metabolomics and proteomics data combined before systems biology can live up to its potential. In this work I explored mathematical and statistical methods and visualization tools t

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48

Davies, Christopher W. "Quantification of Optical Parameters Using Frequency Domain Functional Near-Infrared Spectroscopy (FD-fNIRS)." Wright State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=wright1559369168541587.

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Ruivo, Eurico Luiz Prospero. "Análise espectral dos autômatos celulares elementares." Universidade Presbiteriana Mackenzie, 2012. http://tede.mackenzie.br/jspui/handle/tede/1422.

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Made available in DSpace on 2016-03-15T19:37:42Z (GMT). No. of bitstreams: 1 Eurico Luiz Prospero Ruivo.pdf: 15234351 bytes, checksum: 5a581041d50f5cbd30ccc684b8112487 (MD5) Previous issue date: 2012-12-11<br>Universidade Presbiteriana Mackenzie<br>The Fourier spectra of cellular automata rules give a characterisation of the limit configurations generated by them at the end of their time evolution. In the present work, the Fourier spectra of each rule of the elementary cellular automata rule space are computed, under periodic and non-periodic boundary conditions, and the space is then partit

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Mihálik, Ondrej. "Signály s omezeným spektrem, jejich vlastnosti a možnosti jejich extrapolace." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-400958.

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The work is concerned with the band-limited signal extrapolation using truncated series of prolate spheroidal wave function. Our aim is to investigate the extent to which it is possible to extrapolate signal from its samples taken in a finite interval. It is often believed that this extrapolation method depends on computing definite integrals. We show an alternative approach by using the least squares method and we compare it with the methods of numerical integration. We also consider their performance in the presence of noise and the possibility of using these algorithms for real-time data pr

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