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Dissertations / Theses on the topic 'Signal loss'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Palekar, Trishul Ajit. "Signal optimization at isolated intersections using pre-signals." Texas A&M University, 2006. http://hdl.handle.net/1969.1/4279.

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This research proposes a new signal operation strategy aimed at efficient utilization of green time by cutting down on the start up and response loss times. The idea is to have a "pre-signal" on each main approach a few hundred feet upstream of the intersection in addition to the main intersection signal, which is coordinated with the pre-signal. The offset between the main and pre-signal ensures that the majority of start up losses does not occur at the main signal. The benefits of the system under various traffic conditions were evaluated based on analysis of the queue discharge process and

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2

Kurtoglu, Levent. "Analysis of loss for inductive strips in finline." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA239947.

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Thesis (M.S. in System Engineering)--Naval Postgraduate School, September 1990.<br>Thesis Advisor(s): Knorr, Jeffrey B. Second Reader: Janaswamy, R. "September 1990." Description based on title screen as viewed on March 18, 2010. DTIC Identifier(s): Finlines, Inductive Strips, Ohmic Losses. Author(s) subject terms: Finline, Inductive Strip, Finline Discontinuity, Ohmic Losses. Includes bibliographical references (p. 61). Also available in print.

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Dumenil, Arnaud. "Polarization dependent loss in next-generation optical networks : challenges and solutions." Electronic Thesis or Diss., Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAS006.

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La demande de débit en augmentation constante requiert des canaux de communication fiables et robustes. Les réseaux optiques terrestres ainsi que les liens sous-marins représentent le cœur de l'infrastructure des télécommunications au niveau mondial, et transportent des centaines de canaux fréquentiels modulés à haut débit. Ces liens se composent non seulement de kilomètres de fibre mais aussi de composants optiques comme les amplificateurs à fibre dopée à l'erbium (EDFA) pour relever régulièrement la puissance des signaux atténués, ou encore des commutateurs sélectifs en longueur d'onde (WSS)

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Pokorný, Rostislav. "Návrh programovatelného útlumového členu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413091.

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This Master´s thesis focuses on design and implementation of programmable attenuator. The main aim of this thesis is to create an electronical device that provide continuous setting of attenuation value in the range between 0–150 dB. Setting a value from the range can be performed using buttons and set values are shown on display. For this thesis an attenuator with working frequency between 0–6 GHz was chosen and four–layer printed circuit board was designed. As a result the device is fitted with an 8bit microcontroller ATmega328P–PU using five 6bit digital attenuators connected in series with

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Pidaparthi, Sahitya. "AN ASSESSMENT OF THE ACCURACY OF MAGENTIC RESONANCE PHASE VELOCITY MAPPING IN TURBULENT FLOW THROUGH ORIFICES." Cleveland State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=csu1297396841.

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Stephens, Richard Brian Leonard. "A study and modelling of the propagation effects of vegetation on radio waves at centimetre-wavelength frequencies." Thesis, University of South Wales, 1998. https://pure.southwales.ac.uk/en/studentthesis/a-study-and-modelling-of-the-propagation-effects-of-vegetation-on-radio-waves-at-centimetrewavelength-frequencies(48d8248f-a287-45e4-96e5-fe8d8e56efae).html.

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With the increase in and more diverse applications of microwave radio communications, the probability of a signal propagating through a medium of vegetation is increased. As a direct result of this demand for microwave communication systems, knowledge is required of the effects of vegetation media on the propagating microwave signal. This enables radio system planners to predict the signal loss more accurately, necessitating a detailed study of the propagation effects of vegetation. A vegetation depth attenuation model has been developed based on the International Telecommunications Union-Radi

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7

Curran, Brian [Verfasser], and Herbert [Akademischer Betreuer] Reichl. "Loss Modeling in Non-Ideal Transmission Lines for Optimal Signal Integrity / Brian Curran. Betreuer: Herbert Reichl." Berlin : Universitätsbibliothek der Technischen Universität Berlin, 2012. http://d-nb.info/1024771911/34.

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8

LINARES, LUIS CARLOS BLANCO. "STUDY OF SIGNAL DISTORTION IN ANALOGICAL OPTICAL SYSTEMS: FOR COMBINED EFFECTS OF POLARIZATION MODE DISPERSION AND POLARIZATION DEPENDENT LOSS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1999. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=7426@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>Neste trabalho é apresentado um estudo do formalismo matemático para a teoria da polarização da luz, da dispersão dos modos de polarização e das perdas dependentes da polarização e de seus efeitos combinados. Medidas experimentais para caracterização dos parâmetros dos dispositivos que compõe a montagem experimental são apresentados, sendo aqui abordadas as técnicas de medida utilizadas. Um novo modelamento teórico para os efeitos combinados da dispersão dos modos de polarização e das perdas dependentes da polarização em

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Chhabra, Manish. "Source Characterization using an Experimental Method and Prediction of Insertion of the Exhaust System." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin154399673454236.

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10

Dybäck, Matilda, and Johanna Wallgren. "Pupil dilation as an indicator for auditory signal detection : Towards an objective hearing test based on eye tracking." Thesis, KTH, Skolan för teknik och hälsa (STH), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-192703.

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An early detection of hearing loss in children is important for the child's speech and language development. For children between 3-6 months, a reliable method to measure hearing and determine hearing thresholds is missing. A hearing test based on the pupillary response to auditory signal detection as measured by eye tracking is based on an automatic physiological response. This hearing test could be used instead of the objective hearing tests used today. The presence of pupillary response has been shown in response to speech, but it is unstudied in response to sinus tones. The objective of th

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11

Bayram, Ahmet. "A Study of Indoor Ultra-wideband Propagation Measurement and Characterization." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/32748.

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Ultra-wideband (UWB) communication is emerging as a new wireless technology, which promises high data rates with low interference and low power consumption. The development of such UWB systems requires a sufficiently large amount of data to characterize the propagation behavior of UWB signals in indoor environments and develop accurate channel models. This thesis focuses primarily on a frequency-domain approach for propagation measurements and characterization of indoor UWB channels. This approach is based on measurements of the amplitude using a scalar network analyzer and retrieval of the ph

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Rakk, Adrian. "Automatically measuring the resistive loss of a transformer : A project in cooperation with Alstom Power Sweden." Thesis, Blekinge Tekniska Högskola, Institutionen för tillämpad signalbehandling, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-10791.

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In order to develop more economical and ecologically friendly transformers it is necessary to know the losses throughout the product development process. There are several losses related to transformers, but in this particular case the focus will be on the resistive loss of the transformer. In order to measure this loss first the resonant frequency of the transformer is determined. Since at resonance the secondary side of the transformer is considered to be purely resistive. The aim of this paper is to design and build a closed loop measurement system that is able to perform this task.

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Muzi, Lanfranco. "Advances in Autonomous-Underwater-Vehicle Based Passive Bottom-Loss Estimation by Processing of Marine Ambient Noise." PDXScholar, 2015. https://pdxscholar.library.pdx.edu/open_access_etds/2612.

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Accurate modeling of acoustic propagation in the ocean waveguide is important to SONAR-performance prediction, and requires, particularly in shallow water environments, characterizing the bottom reflection loss with a precision that databank-based modeling cannot achieve. Recent advances in the technology of autonomous underwater vehicles (AUV) make it possible to envision a survey system for seabed characterization composed of a short array mounted on a small AUV. The bottom power reflection coefficient (and the related reflection loss) can be estimated passively by beamforming the naturally

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Baldassaro, Paige Marie. "RF and GIS: Field Strength Prediction for Frequencies between 900 MHz and 28 GHz." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/34724.

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This thesis presents a model to predict signal strength for frequencies between 902 MHz and 28 GHz. The model approximates diffraction using the knife-edge concept and equations proposed by Lee (1985). LOS pathways are calculated using the Bresenham algorithm and the corresponding elevations are obtained from a 30m DEM base map. The base map was generated by the procedure outlined in Rose (2001) and includes building elevations. The effect of Fresnel zones on prediction accuracy is considered. The effect of interpolating elevations along the Bresenham line is also considered. An Inverse

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Thorslund, Birgitta. "Effects of hearing loss on traffic safety and mobility." Doctoral thesis, Linköpings universitet, Institutionen för beteendevetenskap och lärande, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-111933.

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The aim of this PhD thesis was to investigate traffic safety and mobility for individuals with hearing loss (HL). Three studies were conducted: 1. a questionnaire survey aimed to evaluate differences in choice of transportation that might be related to HL, 2. a driving simulator study that looked into compensatory strategies and evaluated the efficiency of a tactile signal to alert the driver, and 3. a field study to evaluate these effects in real traffic and to evaluate a navigation system with a supportive tactile signal. The effects of HL discovered in this thesis add to the knowledge and u

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Costa, Julio C. "Analysis and optimization of empirical path loss models and shadowing effects for the Tampa Bay area in the 2.6 GHz band." [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002547.

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Dyverfeldt, Petter. "Estimation of Turbulence using Magnetic Resonance Imaging." Thesis, Linköping University, Department of Biomedical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-7448.

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<p>In the human body, turbulent flow is associated with many complications. Turbulence typically occurs downstream from stenoses and heart valve prostheses and at branch points of arteries. A proper way to study turbulence may enhance the understanding of the effects of stenoses and improve the functional assessment of damaged heart valves and heart valve prostheses.</p><p>The methods of today for studying turbulence in the human body lack in either precision or speed. This thesis exploits a magnetic resonance imaging (MRI) phenomenon referred to as signal loss in order to develop a method for

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18

Wu, Qing. "Characterization of Impulse Noise and Hazard Analysis of Impulse Noise Induced Hearing Loss using AHAAH Modeling." OpenSIUC, 2014. https://opensiuc.lib.siu.edu/theses/1467.

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Millions of people across the world are suffering from noise induced hearing loss (NIHL), especially under working conditions of either continuous Gaussian or non-Gaussian noise that might affect human's hearing function. Impulse noise is a typical non-Gaussian noise exposure in military and industry, and generates severe hearing loss problem. This study mainly focuses on characterization of impulse noise using digital signal analysis method and prediction of the auditory hazard of impulse noise induced hearing loss by the Auditory Hazard Assessment Algorithm for Humans (AHAAH) modeling. A dig

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Al, Issa Huthaifa A. "Position-adaptive Direction Finding for Multi-platform RF Emitter Localization using Extremum Seeking Control." University of Dayton / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1343755148.

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20

Mbairi, Felix D. "Some Aspects of Advanced Technologies and Signal Integrity Issues in High Frequency PCBs, with Emphasis on Planar Transmission Lines and RF/Microwave Filters." Doctoral thesis, KTH, Mikroelektronik och tillämpad fysik, MAP, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4324.

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The main focus of this thesis is placed on high frequency PCB signal Integrity Is-sues and RF/Microwave filters using EBG structures. From the signal Integrity aspect, two topics were mainly discussed. On one hand, the effect of increasing frequency on classical design rules for crosstalk reduction in PCBs was investigated experimentally and by full-wave simulations. An emphasis was placed on the 3×W spacing rule and the use of guard traces. Single-ended and differential transmission lines were considered. S-parameter measurements and simu-lations were carried out at high-frequency (up to 20 G

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DiSalvo, Maribeth. "Effects of Cardiovascular Health on Hearing Levels Among Musicians." Miami University / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=miami1051043965.

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22

Kritzinger, Mieke. "Cortical Auditory Evoked Potential (CAEP) and the chirp Auditory Steady State Response (ASSR) in predicting behavioural hearing thresholds in adults with sensorineural hearing loss." Diss., University of Pretoria, 2019. http://hdl.handle.net/2263/73231.

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Abstract Purpose: To compare the frequency specific Cortical Auditory Evoked Potential (CAEP) and the chirp-evoked 40 Hz Auditory Steady State Response (ASSR) with equivalent residual noise levels for behavioural threshold prediction in adults with normal hearing and with SNHL. Method: The study tested 23 adults with normal hearing and 20 adults with SNHL. The participants were aged between 18–65 years. A repeated measures within- participant descriptive design was used to collect the quantitative data. The participants underwent behavioural pure tone, CAEP and ASSR testing on the sam

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Xu, Liang. "Computerised analysis of fetal heart rate." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:9ad2cf2f-45aa-48df-b33f-da27087bd5da.

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This thesis presents a comprehensive work on computerised analysis of fetal heart rate (FHR) features, including feature extraction, feature selection, analysis of influencing factors and setting up/validation of a computerised decision support system. Firstly, a novel feature – pattern readjustment – was extracted and tested. Clinical data were used to train a Support Vector Machine (SVM) to detect pattern readjustment. Then, the association of pattern readjustment and adverse labour outcome was investigated. The validation results with clinical experts show that the pattern readjustment can

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Folio, David. "Stratégies de commande référencées multi-capteurs et gestion de la perte du signal visuel pour la navigation d’un robot mobile." Toulouse 3, 2007. http://www.theses.fr/2007TOU30253.

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L'amélioration des capteurs a permis l'émergence de la commande référencée capteurs qui permet la réalisation de diverses tâches de navigation de façon précises. L'intention de cette thèse est de contribuer à définir des stratégies de commande référencées multicapteurs pour un robot mobile réalisant une tâche référencée vision dans un environnement encombré d'obstacles susceptibles d'occulter le motif visuel. Nous avons ainsi proposé des lois de commandes permettant d'éviter à la fois les occultations et les collisions. Toutefois,les résultats obtenus ont montré que chercher à éviter simultané

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Hasan, Md Al-Mahadi, and Mainul Islam. "Improving the System Performance of High Altitude Platforms Serving Suburban Areas." Thesis, Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5071.

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High Altitude Platforms (HAP) has been evolving to make a new history in wireless communications infrastructure. A number of applications and services have been proposed for HAP based communications which advance HAP over terrestrial and satellite infrastructure for future communications. Providing high speed multimedia mobile communications through HAPs to the users of Third Generation (3G) holds strong position using one of the proposed band, 2GHz. In this study we investigated how to improve the performance of 3G serving from HAP over a territory having suburban characteristics. Two propose

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Grobbelaar, Annerina. "Linear frequency transposition and word recognition abilities of children with moderate-to-severe sensorineural hearing loss." Diss., Pretoria : [s. n.], 2009. http://upetd.up.ac.za/thesis/available/etd-03112010-104801.

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Bsoul, Abed Al-Raoof. "PROCESSING AND CLASSIFICATION OF PHYSIOLOGICAL SIGNALS USING WAVELET TRANSFORM AND MACHINE LEARNING ALGORITHMS." VCU Scholars Compass, 2011. http://scholarscompass.vcu.edu/etd/258.

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Over the last century, physiological signals have been broadly analyzed and processed not only to assess the function of the human physiology, but also to better diagnose illnesses or injuries and provide treatment options for patients. In particular, Electrocardiogram (ECG), blood pressure (BP) and impedance are among the most important biomedical signals processed and analyzed. The majority of studies that utilize these signals attempt to diagnose important irregularities such as arrhythmia or blood loss by processing one of these signals. However, the relationship between them is not yet fu

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Zattoni, Michelle Queiroz. "Benefício do sistema de frequência modulada em crianças usuárias de aparelhos de amplificação sonora individual e implante coclear." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/5/5160/tde-21012013-174615/.

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A criança com deficiência auditiva sensorioneural apresenta uma maior dificuldade para compreender a fala em meio ao ruído em comparação à criança normo-ouvinte. Portanto é importante considerar o uso de recursos, como o sistema de frequência modulada (FM), que auxiliam os usuários de aparelho de amplificação sonora individual (AASI) e implante coclear (IC) no reconhecimento de fala no ruído. OBJETIVO: verificar o benefício do sistema de FM em crianças com deficiência auditiva sensorioneural usuárias de AASI e/ou IC. METODOLOGIA: Participaram do estudo 30 crianças com idades entre 6 e 13 anos

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Arieta, Aline de Moraes 1981. "HINT Brasil : estudo em portadores de perdas auditivas." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/309221.

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Orientadores: Everardo Andrade da Costa, Christiane Marques do Couto<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas<br>Made available in DSpace on 2018-08-22T10:10:32Z (GMT). No. of bitstreams: 1 Arieta_AlinedeMoraes_D.pdf: 1729442 bytes, checksum: 2887ecc98db30769bd998782cb6716d0 (MD5) Previous issue date: 2013<br>Resumo: A investigação do reconhecimento da fala na presença de ruído competidor, em situações de escuta assemelhadas às do dia a dia, torna-se cada vez mais necessária. Atualmente, na rotina audiológica nacional, esta avaliação ainda é real

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Saeed, Asad, Habib Ur Rehman, and Muhammad Hassan Masood. "Performance Analysis and Comparison of Radio Propagation Models for Outdoor Environment in 4G LTE Network." Thesis, Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3241.

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The dissertation concerns about the path loss calculation of Radio Frequency (RF) propagation models for 4G Long Term Evolution (LTE) Network to prefer the best Radio Frequency propagation model. The radio propagation models are very significant while planning of any wireless communication system. A comparative analysis between radio propagation models e.g. SUI model, Okumura model, Cost 231 Hata Model, Cost 231-Walfisch Ikegami and Ericsson 9999 model that would be used for outdoor propagation in LTE. The comparison and performance analysis has been made by using different geological environm

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Obeidat, Huthaifa A. N. "Investigation of Indoor Propagation Algorithms for Localization Purposes: Simulation and Measurements of Indoor Propagation Algorithms for Localization Applications using Wall Correction Factors, Local Mean Power Estimation and Ray Tracing Validations." Thesis, University of Bradford, 2018. http://hdl.handle.net/10454/17385.

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The objective of this work is to enhance the awareness of the indoor propagation behaviour, by a set of investigations including simulations and measurements. These investigations include indoor propagation behaviour, local mean power estimation, proposing new indoor path loss model and introducing a case study on 60 GHz propagation in indoor environments using ray tracing and measurements. A summary of propagation mechanisms and manifestations in the indoor environment is presented. This comprises the indoor localization techniques using channel parameters in terms of angle of arrival (A

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Cruz, Aline Duarte da. "Esforço auditivo e fadiga em adolescentes com deficiência auditiva - uso do sistema FM." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/25/25143/tde-01102018-201135/.

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O esforço auditivo é definido como o esforço cognitivo e de atenção necessários para compreender a fala em ambiente ruidoso. Este estudo teve como objetivo analisar o esforço auditivo e fadiga em adolescentes com deficiência auditiva, usuários de aparelho de amplificação sonora individual (AASI), sem e com sistema de frequência modulada (FM), e comparar com adolescentes com audição normal, por meio do desenvolvimento de uma plataforma para execução da tarefa secundária em teste de dupla tarefa; analisar o impacto do ruído na aprendizagem pela perspectiva dos participantes; e investigar a opini

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Castro-Arvizu, Juan Manuel. "Robust indoor positioning in WLAN networks." Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/405889.

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Navigation and location technologies have been reaching in a major interest where Global Navigation Satellite System (GNSS) is mostly adopted. The limitation of this technology is that direct sky view is needed for reliable positioning. In indoor environments, however, it is difficult for GNSS technology to provide a reliable performance in positioning due to the signal attenuation and blocking caused by buildings and construction materials. For this reason, the growth in indoor applications has focused the research in new techniques for attempting mitigate the poor GNSS performance on this ty

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Fidêncio, Vanessa Luisa Destro. "Avaliação digital do efeito do ruído sobre a fala: relação sinal/ruído." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/25/25143/tde-03122013-170001/.

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O ruído é um fator que contribui negativamente para a habilidade de compreensão da fala, o que pode prejudicar o desenvolvimento da criança com deficiência auditiva. Nas salas de aula, a fala raramente é transmitida a criança sem que haja interferência do ruído de fundo. Ao mesmo tempo, a efetiva transmissão da informação auditiva é imprescindível para um melhor desempenho acadêmico. Na maioria dos ambientes de aprendizagem, o que mais interfere para que haja uma boa percepção da fala é a relação sinal/ruído (S/R). O Sistema de Frequência Modulada (FM) funciona como o meio mais efetivo para me

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Gitijah, Parham. "Utveckling av mätmetod och prestandaanalys av LoRa." Thesis, KTH, Hälsoinformatik och logistik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-252818.

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Internet of Things(IoT) tillämpningar har ökat under de senaste åren och därför behövs nya kommunikationstekniker som uppfyller kriterierna låg strömförbrukning, lång räckvidd samt låg kostnad, som behövs för att distribuera tekniken i samhället. LoRa (Long Range) är en framstående trådlös kommunikationsteknik som utvecklades av LoRa Alliance för att uppfylla dessa kriterier. Syftet med arbetet är att utveckla en mätmetod för prestandaanalys av radiosystemet LoRa. Mätmetoden används sedan för att analysera hur olika parametrar som datahastighet, avstånd och olika miljöer påverkar LoRa-nätverk

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Lessoway, Kamea. "Perception of quality of life for adults with hearing impairment in Aotearoa / New Zealand." Thesis, University of Canterbury. Department of Communication Disorders, 2014. http://hdl.handle.net/10092/9599.

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AIMS: This study investigated the perception of generic and disease-specific Health-Related Quality of Life (HRQoL) for adults living with hearing impairment (HI) in Aotearoa/New Zealand (NZ). This study aimed to answer three questions: (1) What is the perception of HRQoL amongst adults with hearing impairment in NZ? (2) How do these perceptions compare to adults with HI living in other countries for which we have data? (3) What are the demographic and audiometric variables related to device ownership? METHOD: HRQoL, demographic, and audiometric information was collected from 126 adults in NZ

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Jaimes, Isaac. "Contribution à la modélisation d’un turbocompresseur automobile et sa caractérisation acoustique." Thesis, Paris, ENSAM, 2017. http://www.theses.fr/2017ENAM0045/document.

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Dans cette thèse, des méthodes de caractérisation acoustique passive et active de systèmes acoustiques à deux ports sont présentées, basées sur une décomposition d’ondes planes en entrée et sortie. Cette décomposition est réalisée par la méthode du beamforming. Ces méthodes mises en place et validées sur des géométries simples, sont ensuite employées pour caractériser l’étage compresseur d’un turbocompresseur de suralimentation automobile. La caractérisation acoustique active se fait par la mesure de la puissance et de l’intensité acoustique dans les conduits du compresseur, ceci pour des poin

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Pizarro, Luzia Maria Pozzobom Ventura. "Maturação cortical e habilidades auditivas em usuários experientes de Vibrant Soundbridge: estudo eletrofisiológico e comportamental." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/5/5143/tde-27092018-084134/.

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Introdução: A atresia congênita de orelha constitui uma deformidade presente ao nascimento, de prevalência unilateral, decorrente da alteração no desenvolvimento das estruturas das orelhas externa e média. Geralmente, provoca perda auditiva condutiva, e pode ser acompanhada por componente sensorioneural. Dentre as formas de tratamento disponíveis, encontra-se o implante de orelha média Vibrant Soundbridge (VSB), que tem se mostrado eficaz no tratamento deste tipo de alteração. A literatura mostra melhora nos limiares tonais e nos resultados dos testes de percepção auditiva da fala, realizados

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Pai, Ruby J. "Nonadaptive lossy encoding of sparse signals." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/41623.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2006.<br>Includes bibliographical references (p. 67-68).<br>At high rate, a sparse signal is optimally encoded through an adaptive strategy that finds and encodes the signal's representation in the sparsity-inducing basis. This thesis examines how much the distortion rate (D(R)) performance of a nonadaptive encoder, one that is not allowed to explicitly specify the sparsity pattern, can approach that of an adaptive encoder. Two methods are studied: first, optimizing the number of nona

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Kim, Hyunsu. "Transmission loss of silencers with flow from a flow-impedance tube using burst signals." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1320338533.

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Afifi, Mohammed Ahmed Melegy Mohammed. "TCP FTAT (Fast Transmit Adaptive Transmission): A New End-To- End Congestion Control Algorithm." Cleveland State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=csu1414689425.

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Luo, Meiling. "Indoor radio propagation modeling for system performance prediction." Phd thesis, INSA de Lyon, 2013. http://tel.archives-ouvertes.fr/tel-00961244.

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This thesis aims at proposing all the possible enhancements for the Multi-Resolution Frequency-Domain ParFlow (MR-FDPF) model. As a deterministic radio propagation model, the MR-FDPF model possesses the property of a high level of accuracy, but it also suffers from some common limitations of deterministic models. For instance, realistic radio channels are not deterministic but a kind of random processes due to, e.g. moving people or moving objects, thus they can not be completely described by a purely deterministic model. In this thesis, a semi-deterministic model is proposed based on the dete

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Lu, Yilong. "The finite element solution of inhomogeneous anisotropic and lossy dielectric waveguides." Thesis, University College London (University of London), 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268886.

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Deghdegh, Khireddine. "Étude des paramètres du signal E. M. G. Associé à des exercices dynamiques : caractérisation de la fatigue lors de tests sur cycloergomètre." Lyon 1, 1998. http://www.theses.fr/1998LYO10107.

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Cette étude a pour objectif d'analyser les variations cinématiques et électromyographiques survenant lors de la répétition de sprints sur cycloergomètre. L'expérimentation porte sur l'analyse des prélèvements EMG de quatre muscles de la jambe (biceps femoris, gastrocnemius medialis, vastus lateralis, rectus femoris) combinés à l'électrogoniométrie du genou au cours d'un protocole de fatigue basé sur une série de quinze sprints. L'étude effectuée par le biais de diverses méthodes de traitement du signal a porté sur trois axes : la caractérisation de la fatigue musculaire, la corrélation des gra

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Goldschneider, Jill R. "Lossy compression of scientific data via wavelets and vector quantization /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/5881.

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EL, HARAOUI MOHAMED. "Etude du signal emg : confrontation avec les parametres cardio respiratoires lors d'une epreuve d'effort." Amiens, 1997. http://www.theses.fr/1997AMIE0117.

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Le but de cette etude est d'automatiser la recuperation et le traitement des signaux cardio-respiratoires et electromyographiques (emg) chez les enfants prepuberes durant une epreuve d'effort. Il s'agit en particulier de determiner les seuils ventilatoires et de rechercher les relations entre le signal emg et la reponse ventilatoire afin d'approcher la determination des seuils ventilatoires par des methodes moins invasives. Pour cela deux algorithmes ont ete developpes (pentes, em : erreur minimum) et deux autres ont ete adaptes (dmax : distance maximale, df : derivee filtree). Sept enfants sa

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Ibata, Ombetta Stella. "Signalisation et régulation des fonctions cellulaires induites lors de Candida albicans avec le macrophage." Lille 2, 2003. http://www.theses.fr/2003LIL2MT15.

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Rocha, Clayton Henrique. "Inteligibilidade de fala em trabalhadores expostos a ruído com protetores auditivos." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/5/5170/tde-09082017-123419/.

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Introdução: O ruído é um dos principais agentes de poluição ambiental, que em intensidades elevadas, poderá causar a perda auditiva induzida por níveis de pressão sonora elevadas (PAINPSE). A PAINPSE é o segundo tipo de perda auditiva neurossensorial mais frequente, e considerada uma das principais doenças ocupacionais. Para evitar os prejuízos da exposição ao ruído ocupacional, legislações determinam o monitoramento e o desenvolvimento de ações para reduzir os efeitos da exposição, sendo o uso de dispositivos de proteção auditiva (DPA) a mais empregada. Contudo é comum que o trabalhador relat

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Lohard, Steven. "Propagation d'un signal pro-apoptotique paracrine via la voie cGAS/STING lors des chimitothérapies antimitotiques." Thesis, Nantes, 2019. http://www.theses.fr/2019NANT1004/document.

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Une action fascinante mais non caractérisée de la chimiothérapie antimitotique consiste à induire une apoptose mitochondriale collective, bien que n’impactant que la sous-population cellulaire proliférante. Nous montrons ici que les réponses apoptotiques aiguës au paclitaxel de cultures organotypiques de tumeurs mammaires humaines et de xénogreffes dérivées de patientes s’associent à des signatures d’expression génique marquant une exposition au TNFα et aux IFN de type I. Ces cytokines sont sécrétées par les cellules cancéreuses présentant des micronoyaux induits par le traitement antimitotiqu

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Muto, Shunsuke, and Yusuke Sasano. "Energy-drift correction of electron energy-loss spectra from prolonged data accumulation of low SNR signals." Oxford University Press, 2008. http://hdl.handle.net/2237/20779.

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