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1

Scott, Sarah Jane. "Comparing Speech Movements in Different Types of Noise." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/4226.

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This study examined the impact of several noise conditions on speech articulator movements during a sentence repetition task. Sixty participants in three age groups ranging from 20 to 70 repeated a sentence under five noise conditions. Lower lip movements during production of a target sentence were used to compute the spatiotemporal index (STI). It was hypothesized that STI would be lower (indicating greater stability) in the silent baseline condition. There were changes in speech production under several of the noise conditions. The duration for the 1-talker condition was significantly shorte
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2

Kvist, Eric, and Rhodin Sandro Lockvall. "A comparative study between MLP and CNN for noise reduction on images : The impact of different input dataset sizes and the impact of different types of noise on performance." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-259654.

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Images damaged by noise present a problem that can be addressed by performing noise-reduction using neural networks. This thesis analyses the performance of two different neural networks, a Mulilayer Perceptron (MLP) and a Convolutional Neural Network (CNN), when performing noise reduction on images. Specifically focusing on the impact of the size of dataset used to train the two different kinds of neural networks has on the performance, as well as how well these two networks perform when reducing different types of noise. This in an attempt to determine whether the use of the more modern type
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3

Weber, Nicole [Verfasser], Dagmar [Akademischer Betreuer] Haase, Tobia [Akademischer Betreuer] Lakes, and Ulrich [Akademischer Betreuer] Franck. "Using landscape metrics to assess traffic noise, air pollution and temperature conditions : traffic noise, airborne particles and surface temperatures of urban structure types in Leipzig / Nicole Weber. Gutachter: Dagmar Haase ; Tobia Lakes ; Ulrich Franck." Berlin : Mathematisch-Naturwissenschaftliche Fakultät, 2015. http://d-nb.info/1070906220/34.

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4

Varadarajan, Vaishnevi S. "Analysis and compensation of the Lombard effect under different types and levels of noise with application to in-set/out-of-set speaker recognition." 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:1442912.

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5

De, Vito Christie. "Comparison of personal attenuation ratings attained by agricultural and industrial workers for four hearing protection types using the 3M E-A-RFIT dual validation system." Thesis, University of Iowa, 2017. https://ir.uiowa.edu/etd/5457.

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Despite the enactment of hearing protection laws and recommended standards over the last four decades, the prevalence of hearing loss among workers has remained unchanged. Limiting the amount of time spend in high noise areas, as well as wearing hearing protection devices, can reduce the effects of noise on hearing loss. Though research has examined the consistency of use of hearing protection devices (HPD) among workers, the importance of fit, and a real-world comparison to the marketed attenuation needed further examination. The goal of this project is to evaluate the effectiveness of HPDs u
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6

Fonseca, Eduardo. "Training sound event classifiers using different types of supervision." Doctoral thesis, Universitat Pompeu Fabra, 2021. http://hdl.handle.net/10803/673067.

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The automatic recognition of sound events has gained attention in the past few years, motivated by emerging applications in fields such as healthcare, smart homes, or urban planning. When the work for this thesis started, research on sound event classification was mainly focused on supervised learning using small datasets, often carefully annotated with vocabularies limited to specific domains (e.g., urban or domestic). However, such small datasets do not support training classifiers able to recognize hundreds of sound events occurring in our everyday environment, such as kettle whistles
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7

Unver, Ozge. "A Modelling Study For The Health Risk Posed By Nuclear Power Plant In Bulgaria At Different Parts Of Turkey." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/729053/index.pdf.

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In this study, following a severe accident at Kozloduy nuclear plant in Bulgaria how Turkey would be affected was investigated. The severe accident refers to core meltdown accident with catastrophic failure of containment. The model used is HySPLIT model developed in America. The worst day was predicted considering deposition of radionuclides. For initial runs, accidental release of I-131 and Cs-137 radionuclides was modeled for each day of year 2000 to find the worst day, seen to result from release beginning on April 7th 2000. After modeling release of all radionuclides for the worst day, ra
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8

Danisman, Batuhan. "Analysis Of Conventional Low Voltage Power Line Communication Methods For Automatic Meter Reading And The Classification And Experimental Verification Of Noise Types For Low Voltage Power Line Communication Network." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610469/index.pdf.

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In this thesis, the conventional low voltage power line communication methods is investigated in the axis of automated meter reading applications and the classification and experimental verification of common noise types for low voltage power line communication network. The investigated system provides the real time transmission of electricity consumption data recorded by electricity meters, initially to a local computer via a low voltage line through a low speed PLC (Power Line Carrier) environment and subsequently to a corporate network through a high speed data transmission medium. The auto
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9

Gormez, Baran. "Investigation Of Non-methane Volatile Organic Carbon Emissions From Interior Materials Used In The Intercity Buses." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/4/12605512/index.pdf.

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The objectives of this study are to determine the non-methane volatile organic carbon emissions from the parts used in the interiors of buses at different temperatures and to analyze the components of these emissions. The total non-methane volatile organic carbon (NMVOC) concentrations in various sections of a bus were measured in order to determine the indoor air pollution in the bus. Different samples of the materials used in the interior parts of the buses were provided by the manufacturing company and they were tested in the METU Air Pollution Laboratory in order to see what hydrocarbon co
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10

McKean, Vanessa. "The role of expectations and visions of the future in the development of target-based environmental policies : the case of the UK Air Quality Strategy." Thesis, University of Sussex, 2015. http://sro.sussex.ac.uk/id/eprint/58039/.

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Increasingly, policy-makers rely on forecasts to set targets for environmental and health protection. I examine the UK Air Quality Strategies (AQS) for particulate matter (1997-2007). Here policy-makers select and articulate visions for technological and policy developments in order to set targets and policies to achieve them. Despite growing evidence for adverse health effects of particulates, challenging targets in 1997 were followed by two revisions of Objectives without introducing measures for reducing pollution. In 2007 more challenging targets were resumed. This thesis is a study of the
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11

Onoglu, Irem. "Investigation Of Emission Factors Of Non-methane Hydrocarbons For Some Widely Used Passenger Cars In Turkey." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605497/index.pdf.

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The objectives of this study are to measure the non-methane volatile organic carbon (NMVOC&#039<br>s) emissions from passenger cars in Turkey having gasoline engines, to determine emission factors of these vehicles for BTEX compounds and comparison of emission factors obtained in this study with the emission factors of the other countries. This study was conducted in two parts: The first part was to determine the categories of passenger cars widely used in Turkey, and also to determine the average carbon monoxide (CO) and hydrocarbon (HC) emissions at idle condition for these car types based
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12

Varol, Murat. "Combustion And Co-combustion Of Olive Cake And Coal In A Fluidized Bed." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607182/index.pdf.

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In this study, combustion performances and emission characteristics of olive cake and olive cake+coal mixture are investigated in a bubbling fluidized bed of 102 mm inside diameter and 900 mm height. The average particle sizes of coal and olive cake used in the experiments were 1.57 mm and 1.52 mm, respectively. Flue gas concentrations of O2, CO, SO2, NOx, and total hydrocarbons (CmHn) were measured during combustion experiments. Operational parameters (excess air ratio, secondary air injection) were changed and variation of pollutant concentrations and combustion efficiency with these operati
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13

Munzur, Basak. "Chemical Composition Of Atmospheric Particles In The Aegean Region." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609373/index.pdf.

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Daily aerosol samples were collected at the &Ccedil<br>andarli which is located on Aegean coast of Turkey. A rural site was selected to monitor atmospheric pollution by long range transport. Sampling was performed in both summer and winter seasons, and in total 151 samples were obtained. Concentrations of elements in the samples were measured in order to identify sources and possible source locations of pollutants. Measured concentrations of trace elements at the &Ccedil<br>andarli station were compared with those measured at various sites around the world and, also in Turkey. As a result of
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14

Yikmaz, Riza Fikret. "Development Of Gis Based Trajectory Statistical Analysis Method To Identify Potential Sources Of Regional Air Pollution." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611969/index.pdf.

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DEVELOPMENT OF GIS BASED TRAJECTORY STATISTICAL ANALYSIS METHOD TO IDENTIFY POTENTIAL SOURCES OF REGIONAL AIR POLLUTION Yikmaz, Riza Fikret M.Sc., Department of Geodetic and Geographic Information Technologies Supervisor: Prof. Dr. G&uuml<br>rdal Tuncel Co-supervisor: Assoc. Prof. Dr. Zuhal Aky&uuml<br>rek May 2010, 186 pages Apportionment of source regions affecting a certain receptor in the regional scale is necessary information for air quality management and development of national policy for exchange of air pollutants with other countries. Source region apportionment can be studied
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15

Kim, Gi-Jeon. "Wave propagation in tyres and the resultant noise radiation." Thesis, University of Southampton, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245609.

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16

Ng, H. N. Elaine. "Effects of noise type on speech understanding." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B37990159.

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17

Ng, H. N. Elaine, and 吳凱寧. "Effects of noise type on speech understanding." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B37990159.

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18

Bouchard, Marie-Hélène. "Croissance et dynamique de l'épinette noire (Picea mariana (Mill.) B.S.P.) dans deux types écologiques de la forêt boréale québécoise, région écologique 6e-Coteaux de la rivière Nestaocano /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 2003. http://theses.uqac.ca.

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19

Yurdakul, Yorulmaz Sema. "Investigation Of Emissions And Combustion Kinetics Of Waste Wood Samples With Thermal And Spectral Methods." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607570/index.pdf.

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The mechanisms and kinetics of combustion of waste wood as well as the phases during combustion processes are important to eliminate these wastes without any possible damage to environment. In the present study, combustion mechanisms, activation energy and pre-exponential constants, and phases of combustion were investigated for untreated natural pine and treated Medium Density Fiberboard (MDF), plywood and particleboard samples that involve some chemicals and additives. Waste wood samples were heated in air at 10, 20 and 30oC/min heating rates in a Thermo Gravimetric Analyzer (TGA) from room
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20

Ozkilic, Ismet Oke. "Simulating Co2 Sequestration In A Depleted Gas Reservoir." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606639/index.pdf.

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Carbon dioxide is one of the greenhouse gases which have strong impacts on the environment and its amount in the atmosphere is far beyond to be ignored. Carbon dioxide levels are projected to be reduced by sequestering it directly to the underground. High amounts of carbon dioxide can be safely stored in underground media for very long time periods. Storage in depleted gas reservoirs provides an option for sequestering carbon dioxide. In 2002, production of Kuzey Marmara gas reservoir has been stopped due to gas storage plans. Carbon dioxide sequestration in Kuzey Marmara field has been con
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21

Ambroziak, Matt J. "Effects of pavement type on traffic noise levels." Ohio : Ohio University, 1999. http://www.ohiolink.edu/etd/view.cgi?ohiou1176229443.

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22

Scansen, Donald W. "Excess noise in n-type hydrogenated amorphous silicon." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq23898.pdf.

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23

Etter, Walter. "Contributions to noise suppression in monophonic speech signals /." [S.l.] : [s.n.], 1993. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10210.

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24

Larsson, Sundqvist Max. "Typer av brus : Implikationer för den auditiva komponenten i ganzfeldstudier." Thesis, Stockholm University, Department of Psychology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-26260.

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<p>Ett vanligt förfarande i parapsykologiska s.k. ganzfeldexperiment är att</p><p>med hjälp av vitt brus, som spelas upp i hörlurar, försöka omsluta</p><p>försökspersoner i ett slags totalt och oföränderligt perceptuellt</p><p>tillstånd. I föreliggande studie undersöks konsekvenserna av att</p><p>använda vitt brus som bakgrundsljud. 30 försökspersoner har lyssnat</p><p>till åtta ljudslingor innehållandes fyra typer av brus vid två olika</p><p>ljudnivåer, för att sedan i ett enkätformulär uppskatta hur dessa ljud</p><p>påverkat dem. Resultatet visar på signifikanta effekter av så väl</p><p>brus
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25

Emtcheu, André. "Processus, types et rôles psycho-sociaux dans la littérature d'Afrique Noire." Paris 10, 1990. http://www.theses.fr/1990PA100072.

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26

Dieme, Robert. "Investigation of process fabrication for low-noise P-type diffused piezoresistors." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0022606.

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27

Goette, Josef. "Contributions to the noise-analysis of switched-capacitor circuits /." Zürich, 1993. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10214.

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28

Menolfi, Christian Ivo. "Low noise CMOS chopper instrumentation amplifiers for thermoelectric microsensors /." Zürich, 2000. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13583.

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29

Schlatter, Adrian. "Noise properties of high repetition rate mode-locked lasers /." Zürich : ETH, 2006. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16965.

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30

Knecht, Wolfgang. "On nonlinear filtering for noise reduction using a sensor array /." [S.l.] : [s.n.], 1995. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=11052.

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31

Högele, Michael, and Ilya Pavlyukevich. "Metastability of Morse-Smale dynamical systems perturbed by heavy-tailed Lévy type noise." Universität Potsdam, 2014. http://opus.kobv.de/ubp/volltexte/2014/7063/.

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We consider a general class of finite dimensional deterministic dynamical systems with finitely many local attractors each of which supports a unique ergodic probability measure, which includes in particular the class of Morse–Smale systems in any finite dimension. The dynamical system is perturbed by a multiplicative non-Gaussian heavytailed Lévy type noise of small intensity ε > 0. Specifically we consider perturbations leading to a Itô, Stratonovich and canonical (Marcus) stochastic differential equation. The respective asymptotic first exit time and location problem from each of the domai
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32

Leyko, Matthieu. "Mise en œuvre et analyse de calculs aéroacoustiques de type SGE pour la prévision du bruit de chambres de combustion aéronautiques." Thesis, Toulouse, INPT, 2010. http://www.theses.fr/2010INPT0082/document.

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Une part importante du bruit généré par les moteurs d'avion est liée à la combustion. Afin de réduire cette source de bruit, une compréhension fine des phénomènes associés est nécessaire. Deux mécanismes générateurs de bruit, et ayant pour origine la combustion, ont été identifié dans les moteurs d'avions dans les années 1970: un premier mécanisme dit direct, qui est lié directement à un dégagement de chaleur instationnaire, et l'autre dit indirect qui est lié aux interactions entre les étages de turbine et les fluctuations de température en sortie de chambre, également produites par la combus
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33

Jaramillo, Ana Maria. "The link between HVAC type and student achievement." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/50565.

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Researchers and practitioners have found that the type of mechanical system utilized to thermally condition a space impacts the noise level for occupants. Indeed, in schools, air conditioning systems are by far the largest contributors to room noise (Bradley, 2002; Nelson et al., 2005; Siebein et al., 2000). Studies have also demonstrated the impact of noise on youth\'s cognitive performance. The problem is worsened in non-native speakers and children with hearing loss (which can be temporary due to colds and allergies or permanent). No studies yet have bridged those two widely-supported findi
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34

Patterson, Steven Gregory. "Quantum intensity noise correlation in a Type-II phase matched optical parametric oscillator." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36977.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.<br>Includes bibliographical references (p. 104-105).<br>by Steven Gregory Patterson.<br>M.S.
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35

Shanmugha, Sundaram G. A. "Imaging and Spectral Studies of Solar type I Noise Storms at Metric Wavelengths." Thesis, Indian Institute of Science, 2004. https://etd.iisc.ac.in/handle/2005/3909.

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Type I noise storms constitute a sizeable fraction of the active-Sun component of solar radiation at meter wavelengths. The storms occur over a prolonged duration as intense, narrow-band spikes, superposed on a low-intensity broadband continuum, in the 30-400 MHz frequency range. Either component of the noise storm radiation has a very high degree of ordinary-mode circular polarization (~ 100 %), and is widely believed to be generated by the plasma emission mechanism. Existence of large sunspot groups or active region complexes, with a high degree of complexity and strength in the associat
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Shanmugha, Sundaram G. A. "Imaging and Spectral Studies of Solar type I Noise Storms at Metric Wavelengths." Thesis, Indian Institute of Science, 2004. http://etd.iisc.ernet.in/handle/2005/46.

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Type I noise storms constitute a sizeable fraction of the active-Sun component of solar radiation at meter wavelengths. The storms occur over a prolonged duration as intense, narrow-band spikes, superposed on a low-intensity broadband continuum, in the 30-400 MHz frequency range. Either component of the noise storm radiation has a very high degree of ordinary-mode circular polarization (~ 100 %), and is widely believed to be generated by the plasma emission mechanism. Existence of large sunspot groups or active region complexes, with a high degree of complexity and strength in the associated
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37

Keiderling, Felix. "Direct noise computation of high Reynolds number subsonic jet flow using LES /." Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17955.

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38

Kabat, Brenda Barrett. "A comparison of two methods for measuring the attenuation provided by insert-type hearing protection devices." PDXScholar, 1990. https://pdxscholar.library.pdx.edu/open_access_etds/4067.

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The need for hearing protection in industry has evolved from the growing awareness of the detrimental effects of noise on hearing and recent legislation enacted to protect the hearing of noise-exposed employees through the use of hearing conservation programs. In lieu of expensive or impractical engineering and administrative controls, personal hearing protection devices (HPDs) are considered to be the most practical and effective means of protecting employees from the damaging effects of noise in industry today.
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39

Kutluer, Kutlu. "Electrical, Optical, And Noise Characterizations Of Mwir Type-ii Inas/gasb Superlattice Single Pixel Detectors." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614737/index.pdf.

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Detection of mid-wavelength infrared radiation is crucial for many industrial, military and biomedical applications. Photon detectors in the market can operate at only low temperature which increases weight, power consumption and total cost. Type-II InAs/GaSb superlattice infrared detectors are expected to have a major role in the infrared detector market with providing high quality detection characteristics at higher temperatures. Therefore, in the past decade, there has been an increasing interest in infrared detectors based on type-II InAs/GaSb superlattice technology due to their long rang
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40

Mehta, Viral. "Torque ripple attenuation for an axial piston swash plate type hydrostatic pump noise considerations /." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4380.

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Thesis (Ph.D.)--University of Missouri-Columbia, 2006.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (February 28, 2007). Vita. Includes bibliographical references.
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Langfeldt, Felix [Verfasser], and Otto von [Akademischer Betreuer] Estorff. "Membrane-type acoustic metamaterials for aircraft noise shields / Felix Langfeldt ; Betreuer: Otto von Estorff." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2018. http://d-nb.info/1171899947/34.

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42

Mazur, Marek. "Etude expérimentale du bruit de combustion dans un foyer de type aéronautique." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLC034/document.

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Le bruit de combustion est devenu un contributeur de plus en plus important dans le bruit total de moteur d'avion. Ce bruit global a deux composantes: Le bruit direct et le bruit indirect. Le premier est issu des fluctuations de dégagement de chaleur dans la flamme elle-même. Le deuxième a pour origine les inhomogénéités de température dans les gaz brûlés. L'objectif de ce travail est la conception d'un banc de combustion sous pression avec une flamme pauvre, prémélangée swirlée dont les paramètres d'injection permettront d'obtenir des grandes quantités de bruit indirect.Il est nécessaire de c
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43

Vallières, Christine. "L'obstruction visuelle latérale de bandes boisées de différents types en forêt dominée par l'épinette noire." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ57895.pdf.

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44

劉淑 and Suk-han Lau. "The effect of type and level of noise on long-term average speech spectrum (LTASS)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31251031.

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Lau, Suk-han. "The effect of type and level of noise on long-term average speech spectrum (LTASS) /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17896253.

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46

Baudin, Sophie. "Détection et extraction des bruits de type grenaille des boîtes de vitesses par approche cyclostationnaire angle/temps." Thesis, Lyon, INSA, 2014. http://www.theses.fr/2014ISAL0118.

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Les couples d'engrenages présents dans les boîtes de vitesses automobiles sont une source de bruit importante à prendre en compte et à maîtriser. L'acyclisme du moteur observable en entrée de boîte a notamment pour conséquence de provoquer des impacts entre les dents des engrenages non chargés, à l'origine du bruit de grenaille. Ce travail de thèse s'intéresse aux cas de grenaille dits périodiques, dont l'apparition et la sévérité dépendent, entre autres, des conditions de fonctionnement régime/charge. Pour détecter la présence et quantifier la sévérité de ce bruit, il est nécessaire de constr
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47

Ahn, Hoon M. "The Heart Rate Responses of Dairy Cows to Two Types of Disturbances--Transportation and Aircraft Noises." DigitalCommons@USU, 1992. https://digitalcommons.usu.edu/etd/4073.

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Three experiments were conducted using implanted heart rate (HR) transmitters. In the first experiment three lactating Holstein cows' HR signals were monitored telemetrically for three successive days under the normal herd management. Overall mean and standard error for these cows was 76.1 ± 0.46 bpm. In the second experiment the same three cows' HR signals were monitored with a portable computer and receiver. The cows were transported 400 kilometers one way over various road surface conditions. The HR signals were monitored consecutively at the beginning of the trip and at hourly intervals du
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48

Roten, Daniel. "Site effects in the Rhône valley analysed by ambient noise, weak motion records and numerical simulations /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17471.

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49

Hamaguchi, Kiyomi. "Role of PGE-type receptor 4 in auditory function and noise-induced hearing loss in mice." Kyoto University, 2012. http://hdl.handle.net/2433/157457.

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50

Barbillon, Pierre. "Méthodes d'interpolation à noyaux pour l'approximation de fonctions type boîte noire coûteuses." Phd thesis, Université Paris Sud - Paris XI, 2010. http://tel.archives-ouvertes.fr/tel-00559502.

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Cette thèse se place dans le cadre des expériences simulées auxquelles on a recours lorsque des expériences physiques ne sont pas réalisables. Une expérience simulée consiste à évaluer une fonction déterministe type boîte-noire coûteuse qui décrit un modèle physique. Les entrées de ce modèle, entachées d'incertitude, forment un vecteur aléatoire. Cela implique que les sorties que nous souhaitons étudier sont aléatoires. Une technique standard pour rendre possibles de nombreux traitements statistiques, est de remplacer la fonction type boîte-noire par un métamodèle d'évaluation quasi-instantané
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