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Tesis sobre el tema "Aerodynamic and acoustic data"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 1 de febrero de 2022

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1

White, Peta. "Acoustic and aerodynamic measurements of children's voices." Thesis, University of Surrey, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388787.

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2

Xiu, Noé. "Perturbation de la production de la parole chez le patient atteint d'une paralysie laryngée : données acoustiques et aérodynamiques." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAC039/document.

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Notre thèse vise à étudier les conséquences d’une ablation totale ou partielle de la glande thyroïde suite à un dysfonctionnement thyroïdien, suivie ou non d’un traitement radiothérapique, et ce dans le domaine de la phonétique clinique. Ce type d’intervention perturbe généralement le système de production de la parole et conduit parfois à une dégradation de la qualité vocale de façon permanente (moins de 5% des cas) ou passagère. Le travail se veut une contribution aux recherches menées en linguistique et phonétique cliniques, plus particulièrement dans le cadre de l’analyse de faits compensa

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3

Gonçalves, Da Silva Pinto Wagner José. "Modelling airframe noise : from aerodynamic topology to acoustic efficiency." Thesis, Poitiers, 2019. http://www.theses.fr/2019POIT2289.

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L’influence de la forme de cylindres longs sur leur rayonnement acoustique en écoulement est étudiée. Des simulations bidimensionnelles (2D) sont réalisées à bas nombre de Reynolds (Re=20-200), à l’aide du code de calcul direct (DNS) incompressible incompact3D au moyen d’une méthode de frontière immergée (IBM). Une formule dérivée de l’équation de Curle pour un cylindre compact permet la quantification de l’émission acoustique en 2D. En soufflerie anéchoïque, la signature acoustique d’une trentaine de géométries est mesurée, Re=4,000-53,000 ; l’anémométrie par fil chaud est utilisée pour la de

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4

Goupil, Marc Y. "Dynamic Pressure Sensing for the Flight Test Data System." DigitalCommons@CalPoly, 2019. https://digitalcommons.calpoly.edu/theses/2115.

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This thesis describes the design, assembly, and test of the FTDS-K, a new device in the Boundary Layer Data System (BLDS) family of flight data acquisition systems. The FTDS-K provides high-frequency, high-gain data acquisition capability for up to two pressure sensors and an additional three low-frequency pressure sensors. Development of the FTDS-K was separated into a core module, specialized analog subsystem, and practical testing of the FTDS-K in a flow measurement mission. The core module combines an nRF52840-based microcontroller module, switching regulator, microSD card, real-time clock

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5

Andreou, Christodoulos. "Acoustic and aerodynamic properties of aerofoil leading-edge high-lift geometries." Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611404.

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6

Kutluay, Umit. "Aerodynamic Parameter Estimation Using Flight Test Data." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613786/index.pdf.

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This doctoral study aims to develop a methodology for use in determining aerodynamic models and parameters from actual flight test data for different types of autonomous flight vehicles. The stepwise regression method and equation error method are utilized for the aerodynamic model identification and parameter estimation. A closed loop aerodynamic parameter estimation approach is also applied in this study which can be used to fine tune the model parameters. Genetic algorithm is used as the optimization kernel for this purpose. In the optimization scheme, an input error cost function is used

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7

Bilgic, Kemal Onder. "Aerial Acoustic Data Communication." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614651/index.pdf.

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Spectrum has been a scarce commodity in RF communication. Acoustic data communication is an alternative to RF communication where data is transmitted through sound waves. In this thesis, several different aspects of acoustic data communication are investigated. A physical test setup is built where the data communication spectrum extends up to 40 kHz. Impulse response of the acoustic channel is considered in a laboratory environment. Acoustic spectrum beyond the hearing limit between 25 kHz to 35 kHz is found as a suitable band for the developed setup. Distance and multipath components are impo

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8

Kim, Y. S. "An acoustic, aerodynamic and perceptual investigation of word-initial denasalization in Korean." Thesis, University College London (University of London), 2011. http://discovery.ucl.ac.uk/1324541/.

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Korean nasals /m/ and /n/ are generally considered by Korean phoneticians to be hardly different from the corresponding English sounds, but those in word-initial position are often perceived as plosives by native speakers of English. This had been noted by only a few previous observers, and investigated on a very limited scale. In this study, various experimental methods were employed in systematic analyses of the production and acoustic form of word-initial /m/ and /n/ from fluent connected speech collected from a relatively large number of informants, and corresponding perception tests were

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9

Albisser, Marie. "Identification of aerodynamic coefficients from free flight data." Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0083/document.

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L'utilisation des coefficients aérodynamiques pour caractériser le comportement d'un objet en vol libre demeure un sujet de recherche parmi les plus complexes et les plus étudiés dans le domaine de la balistique extérieure. La présente étude analyse l'identification des coefficients aérodynamiques à partir de données obtenues lors d'essais en vol libre. Elle vise à modéliser, définir ainsi que maîtriser les techniques d'identification de paramètres les plus adaptées au problème qu'est la détermination des coefficients aérodynamiques. Le travail de thèse a été dédié au développement d'une procé

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10

Nelson, Wendy Jill. "Acoustic, physiologic, and aerodynamic effects of the clinical stimulation technique "tongue protrusion/i/" /." abstract and full text PDF (UNR users only), 1998. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1389835.

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11

Li, Bo. "Aerodynamic and acoustic analysis of the tip-leakage flow past a single ailfoil." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEC042/document.

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L'écoulement de jeu est un phénomène très important dans les turbomachines. Il provient du mouvement relatif entre la pale et la paroi d'extrémité, et la différence de pression à travers la pale. L'écoulement de jeu est extrêmement complexe pour sa nature tridimensionnelle et instable, et son existence conduit à de nombreux effets défavorables, par exemple, les pertes de performance aérodynamique et les émissions de bruit. C'est pourquoi l'écoulement de jeu a motivé de nombreuses recherches expérimentales et numériques. Afin d'améliorer la compréhension du écoulement de jeu et le bruit de larg

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12

Dinsenmeyer, Alice. "Probabilistic approach for the separation of the acoustic and aerodynamic wall pressure fluctuations." Thesis, Lyon, 2020. http://theses.insa-lyon.fr/publication/2020LYSEI087/these.pdf.

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Avec l'apparition des MEMS et la diminution globale du coût des capteurs, les acquisitions multivoies se généralisent, notamment dans le domaine de l'identification de sources acoustiques. La qualité de la localisation et de la quantification des sources peut être dégradée par la présence de bruit de mesure ambiant ou induit par le système d'acquisition. En particulier, dans le cas de mesures en présence d'un écoulement, la couche limite turbulente qui se développe sur le système de mesure peut induire des fluctuations de pression de niveau bien supérieur à celles des sources acoustiques. Il d

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13

Crane, Scott P. "Structural acoustic design optimization of cylinders using FEM/BEM." Thesis, Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/17699.

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14

Yu, Chao. "An acoustic intensity-based method and its aeroacoustic applications." Diss., Connect to online resource - MSU authorized users, 2008.

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15

Gerakis, J. G. (Jeffrey George). "Aerodynamic measurements on some special wing features of nocturnal owls and their acoustic significance." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63333.

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16

Tan, Haidee Lynn Chua. "An Acoustic and Aerodynamic Study of Diatonic Scale Singing in a Professional Female Soprano." Bowling Green State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1230147213.

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17

Larsson, Cahlin Sofia. "Real-Time Estimation of Aerodynamic Parameters." Thesis, Linköpings universitet, Reglerteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-127467.

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Extensive testing is performed when a new aircraft is developed. Flight testing is costly and time consuming but there are aspects of the process that can be made more efficient. A program that estimates aerodynamic parameters during flight could be used as a tool when deciding to continue or abort a flight from a safety or data collecting perspective. The algorithm of such a program must function in real time, which for this application would mean a maximum delay of a couple of seconds, and it must handle telemetric data, which might have missing samples in the data stream. Here, a conceptual

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18

Woods, Amy. "Effect of Continuous Positive Airway Pressure (CPAP) on Aerodynamic and Acoustic Aspects of Velopharyngeal Function." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1523190308305561.

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19

Deshpande, Akshay A. "Acoustic Data Based Grapheme to Phoneme Conversion." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1376926021.

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20

Mautner, Helene. "A Cross-System Instrumental Voice Profile of the Aging Voice: With Considerations of Jaw Posture Effects." Thesis, University of Canterbury. Communication Disorders, 2011. http://hdl.handle.net/10092/5183.

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Purpose: An open mouth approach is used in voice therapy for enhancing speech and voice production and relaxing the laryngeal musculature. The acoustic and physiological consequences of an open jaw posture, however, have not been clearly understood due to a paucity of cross-system studies taking the age effect into consideration. The major aims of this study are twofold (1) to examine if the geriatric voice may be improved using an “open jaw” posture and (2) if an aging effect on the voice of normal healthy adults can be detected through acoustic and physiological measures Method: The main

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21

Hammond, Tim. "Nonignorable missing data in acoustic fish stock assessment." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=69664.

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This thesis deals with in situ estimates of fish target strength distribution which are important in acoustic stock assessment. The data were gathered on Newfoundland's Grand Banks in 1992 using a dual-beam sonar system. In situ measures of target strength distribution are biased unless a correction is made for nonignorable missing data because high target strength fish can be detected more readily than low target strength ones.<br>Two methods of correcting for the bias are described and implemented. Both methods use measured off-axis angle and rely on the accuracy of these angle measurements

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22

Hammond, Tim R. "Classification of fish schools from acoustic survey data /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/5351.

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23

Wang, Shuai. "Embedding data in an audio signal, using acoustic OFDM." Thesis, Linköpings universitet, Kommunikationssystem, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-71427.

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The OFDM technology has been extensively used in many radio communicationtechnologies. For example, OFDM is the core technology applied in WiFi, WiMAXand LTE. Its main advantages include high bandwidth utilization, strong noise im-munity and the capability to resist frequency selective fading. However, OFDMtechnology is not only applied in the ﬁeld of radio communication, but has alsobeen developed greatly in acoustic communication, namely the so called acousticOFDM. Thanks to the acoustic OFDM technology, the information can be em-bedded in audio and then transmitted so that the receiver can

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24

Salz, Beth. "Aerodynamic Measurements: Normative Data for Children Ages 6:0-10:11 Years." Miami University Honors Theses / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=muhonors1110918928.

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25

Rockwell, Patricia Ann. "The voice of deceit: Comparing acoustic and perceptual data." Diss., The University of Arizona, 1994. http://hdl.handle.net/10150/186929.

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This study examined the nature of deceptive vocal behavior in interactive situations. It compared those vocal features of deception that can be measured by acoustic equipment with those vocal features of deception that can be measured perceptually by human coders. As deception researchers traditionally measure vocal behavior with either acoustic or perceptual methods, it is uncertain what correspondence, if any, exists between these two methods. This study attempted to determine this correspondence. Deceptive interactions from an earlier study (Buller, Burgoon, Buslig & Roiger, 1993; Burgoon,

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26

Reid, Ceri St J. "Integration of acoustic and visual data for subsea robotics." Thesis, Heriot-Watt University, 1992. http://hdl.handle.net/10399/783.

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27

Collins, Michael J. "Generating gestural scores from acoustic data using temporal decomposition /." The Ohio State University, 1998. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487951595499921.

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28

Moisel, Christoph, and Thomas Carolus. "A facility for testing the aerodynamic and acoustic performance of bidirectional air turbines for ocean wave energy conversion." Elsevier, 2016. https://publish.fid-move.qucosa.de/id/qucosa%3A36338.

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Bidirectional air turbines are used in oscillating water column (OWC) power plants for harnessing ocean wave energy. This paper describes the bidirectional aerodynamic and aero-acoustic facility at the University of Siegen for model air turbines performance testing. At least nine test facilities are known worldwide, but their layout, the performance testing procedure and the presentation of performance data are not standardized to this day. The layout of the facility at the University of Siegen follows ideas in ISO 5801 for fan performance testing. The pressurized air supply is bidirectional b

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29

Takahama, Morio, Noboru Sakamoto, and Yuhei Yamato. "Attitude Stabilization of an Aircraft via Nonlinear Optimal Control Based on Aerodynamic Data." Institute of Electrical and Electronics Engineers, 2009. http://hdl.handle.net/2237/14420.

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30

Le, Good G. M. "Aerodynamic characteristics of passenger cars : comparison between wind tunnel and track derived data." Thesis, Cranfield University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260296.

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31

Freedman, Joseph Saul. "Using helicopter noise to prevent brownout crashes: an acoustic altimeter." Thesis, Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34833.

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This thesis explores one possible method of preventing helicopter crashes caused by brownout using the noise generated by the helicopter rotor as an altimeter. The hypothesis under consideration is that the helicopter's height, velocity, and obstacle locations with respect to the helicopter, can be determined by comparing incident and reflected rotor noise signals, provided adequate bandwidth and signal to noise ratio. Heights can be determined by measuring the cepstrum of the reflected helicopter noise. The velocity can be determined by measuring small amounts of Doppler distortion using the

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32

Neilsen, Tracianne Beesley. "Normal mode extraction and environmental inversion from underwater acoustic data /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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33

Shahnaz, Navid, M. Patrick Feeney, and Kim S. Schairer. "Wideband Acoustic Immittance Normative Data: Ethnicity, Gender, Aging, and Instrumentation." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etsu-works/1800.

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34

Kokossalakis, George 1976. "Acoustic data communication system for in-pipe wireless sensor networks." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/34379.

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Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2006.<br>Includes bibliographical references.<br>Sustainability of aging infrastructure is one of the greatest current civil engineering challenges, especially in the case of pipelines, where no direct access is available. Being simultaneously massive and distributed, their normal operation is critical for the health and prosperity of the community. In current practice, the condition of pipelines is assessed by non-destructive inspection techniques. Nonetheless, frequent pipeline failures warr

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35

Flietstra, Bryan C. "A data mining approach for acoustic diagnosis of cardiopulmonary disease." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45400.

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Thesis (S.M.)--Massachusetts Institute of Technology, Sloan School of Management, Operations Research Center, 2008.<br>Includes bibliographical references (p. 107-111).<br>Variations in training and individual doctor's listening skills make diagnosing a patient via stethoscope based auscultation problematic. Doctors have now turned to more advanced devices such as x-rays and computed tomography (CT) scans to make diagnoses. However, recent advances in lung sound analysis techniques allow for the auscultation to be performed with an array of microphones, which send the lung sounds to a computer

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36

Jaffer, Sukaina. "Wideband acoustic immittance : instrument, ethnicity, and gender specific normative data." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/57445.

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This study investigated whether wideband acoustic immittance (WAI) values differed significantly in a normal hearing young adult population based on gender, ethnicity, and instrument. Normative data collected from this study can be utilized to create a repository of norms for clinical use as suggested by consensus among researchers in the Eriksholm Workshop. Eighty normal hearing young adults (age 18-34) were recruited from the University of British Columbia to undergo WAI testing with two hand-held devices (Otostat Mimosa Acoustics and Titan Interacoustics) and two non-portable devices (Reflw

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37

Franceschini, Lucas. "Modeling Strategies for Aerodynamic Flow Reconstruction from partial measurements." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLX092.

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Dans un premier temps, nous nous intéresserons à la récupération du champ moyen à partir d'informations partielles ou éparses, allant des sondes de vitesse ponctuelles à la pression ou frottement de paroi. Pour le réaliser, on considère les équations de Reynolds-Averaged Navier-Stokes (RANS), complétées par un modèle, ici le Spalart-Allmaras. Ce type de modélisation a été conçu pour quelques configurations d'écoulement de référence et peut manquer de généralité, ce qui conduit à des prédictions erronées, surtout lorsqu'il y a recirculation. Nous proposons la modification de ce modèle avec un p

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38

Thompson, Peter Mark. "Computation of CAD-based design velocities for aerodynamic design optimisation with adjoint CFD data." Thesis, Queen's University Belfast, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.675476.

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This thesis describes the investigation and development of a novel CAD-based aerodynamic optimisation system, with the aim of allowing gradient-based optimisation of feature-based, parametric models within commercial CAD packages in timescales acceptable for industrial design processes. The process developed is based on linking parametric design velocities (geometric sensitivities computed from the CAD model representing the displacement of a point on the model boundary due to a perturbation of a CAD model parameter) with adjoint surface mesh sensitivities (which represent the derivative of a

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39

Marr, William J. "Acoustic based tactical control of underwater vehicles." Diss., Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Jun%5FMarr%5FPhD.pdf.

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Thesis (Ph. D. in Mechanical Engineering)--Naval Postgraduate School, June 2003.<br>Dissertation supervisor: Anthony J. Healey. Includes bibliographical references (p. 169-173). Also available online.

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40

BenGheit, Ali O. "Inversion of seismic reflection data from the Gialo Field, Sirte Basin." Thesis, Durham University, 1996. http://etheses.dur.ac.uk/5454/.

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This project is concerned with the development of software to invert seismic reflection data for acoustic impedance, with application to the YY-reservoir area in Gialo Field, Sirte Basin. The problem was that of inverting post-stack seismic reflection data from two seismic lines into impedance profiles. The main input to the inversion process is an initial guess, or initial earth model, of the impedance profile defined in terms of parameters. These parameters describe the impedance and the geometry of the number of layers that constitute the earth model. Additionally, an initial guess is neede

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41

Custance-Baker, Stephen. "A Bayesian method of tracking submarines with data from passive sonobuoys." Thesis, Open University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329106.

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42

Ruiz, Mario Calixto Lees Jonathan M. "Analysis of explosive activity of Tungurahua volcano using seismic-acoustic data." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2007. http://dc.lib.unc.edu/u?/etd,757.

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Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2007.<br>Title from electronic title page (viewed Dec. 18, 2007). "... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Geological Sciences." Discipline: Geology; Department/School: Geological Sciences.

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43

Snellen, Mirjam. "Sea bottom parameter estimation by inversion of underwater acoustic sonar data." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2002. http://dare.uva.nl/document/65426.

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44

Frogner, Gary Russell. "Monitoring of global acoustic transmissions : signal processing and preliminary data analysis." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/28379.

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45

Hooper, Simon John. "A multipath receiver for acoustic data communications through an underwater channel." Thesis, University of Birmingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.398684.

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46

Davies, P. "The analysis of vibration (and acoustic) data using time domain methods." Thesis, University of Southampton, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370336.

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47

Partan, James Willard. "Analysis of acoustic communication channel characterization data in the surf zone." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/86872.

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Thesis (S.M. in Electrical Engineering)--Joint Program in Oceanography and Oceanographic Engineering (Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; and the Woods Hole Oceanographic Institution), 2000.<br>Includes bibliographical references (leaves 64-65).<br>by James Willard Partan.<br>S.M.in Electrical Engineering

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48

Gendriz, Ignacio Sánchez. "A methodology for analyzing data from long-term passive acoustic monitoring." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/3/3152/tde-26062017-145831/.

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Despite the extensive Brazilian coast areas, little is known on underwater acoustic environments in Brazil. Acoustic environments (or soundscape) are composed by biological, geological and man-made sound sources. Soundscapes are strongly linked to ecosystems dynamics, and follow temporal patters that can vary at daily and seasonal scales. Thus, for soundscape characterization, it is necessary to undertake sound recordings for long periods, which demands innovative analyzing methods. Accordingly, the present research focuses in two principal objectives: (1) to develop methods for analyzing long

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49

Sibbald, David Bruce. "Development of data acquisition and analysis methods for chemical acoustic emission." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/28829.

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Acoustic Emission Analysis (AEA) is the study of the sonic (and ultrasonic) energy released by chemical systems in the form of transient waves, as the system attempts to (re)attain equilibrium. This area of chemistry, and chemical analysis, is ripe for fundamental studies since it has been little explored. The high potential of the technique as a non-invasive, non-destructive reaction monitoring scheme suggests that numerous applications will follow. In this work, an apparatus and software have been constructed to monitor acoustic emission (AE) and collect and process AE data. A broad-band pi

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50

Aydin, Gunes. "Aerodynamic Parameter Estimation Of A Missile In Closed Loop Control And Validation With Flight Data." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12615044/index.pdf.

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Aerodynamic parameter estimation from closed loop data has been developed as another research area since control and stability augmentation systems have been mandatory for aircrafts. This thesis focuses on aerodynamic parameter estimation of an air to ground missile from closed loop data using separate surface excitations. A design procedure is proposed for designing separate surface excitations. The effect of excitations signals to the system is also analyzed by examining autopilot disturbance rejection performance. Aerodynamic parameters are estimated using two different estimation technique

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