A method for implicit variable selection in mixture-of-experts frameworks is proposed. We introduce a prior structure where information is taken from a set of independent covariates. Robust class membership predictors are identified using a normal gamma prior. The resulting model setup is used in a finite mixture of Bernoulli distributions to find homogenous clusters of women in Mozambique based on their information sources on HIV. Fully Bayesian inference is carried out via the implementation of a Gibbs sampler.

Submitted by Rosina Valeria Lanzellotti Mattiussi Teixeira (rosina.teixeira@unisantos.br) on 2018-04-25T12:31:48Z No. of bitstreams: 1 Luciana Godinho Novaes.pdf: 1845686 bytes, checksum: dca706391577049c533f90f3a164b28a (MD5) / Made available in DSpace on 2018-04-25T12:31:48Z (GMT). No. of bitstreams: 1 Luciana Godinho Novaes.pdf: 1845686 bytes, checksum: dca706391577049c533f90f3a164b28a (MD5) Previous issue date: 2018-03-07 / Práticas pedagógicas são práticas educativas que se organizam para concretizar determinadas intenções pedagógicas. O objetivo deste trabalho é compreender as principais práticas pedagógicas que caracterizavam as escolas normais paulistas no período de 1950 a 1970. É uma pesquisa de abordagem qualitativa, com elementos da pesquisa narrativa, que foi construída através de revisão da bibliografia, entrevistas e análise documental. Houve coleta de informações na Biblioteca da Faculdade de Educação da Universidade de São Paulo, no Arquivo e Biblioteca da antiga Escola Normal de Campinas e no acervo pessoal das entrevistadas. A pesquisa inicialmente investigou os aspectos históricos da escola normal brasileira e paulista e as implicações das políticas públicas na formação de professores. Os referenciais teóricos sobre os aspectos históricos foram de Villela, Saviani e Almeida. Abordou conceitos, aspectos e dilemas na formação de professores polivalentes. Sobre as questões de formação de professores, os referenciais foram de Pimenta, Franco, Marcelo Garcia, Nóvoa e Libâneo. A pesquisa articulou um diálogo entre os dados coletados e as memórias formativas das entrevistadas. O referencial sobre o uso de entrevistas-narrativas como dados de pesquisa foi de Schütze e Bom Meihy. A escolha das entrevistadas, como sendo ex-alunas de cursos normais e atualmente professoras pesquisadoras em educação, resgatou não apenas informações, mas memórias permeadas pela reflexão, a qual é parte cotidiana do exercício das atividades de investigação que o pesquisador em educação desenvolve. Verificou-se, através de triangulação metodológica com referência de Gomes e Minayo, que práticas pedagógicas realizadas nas escolas normais entre os anos de 1950 e 1970 refletiam a política nacional-desenvolvimentista daquele momento, com intenso controle social do Estado brasileiro, através da feminização da carreira docente. O ideário educacional era escolanovista, porém com fortes influências da pedagogia tradicional. A atuação da professora de Prática de Ensino foi considerada peça-chave para a formação docente dos alunos e alunas do curso normal, que em suas narrativas reconheceram a relevância desta disciplina. Este estudo promoveu a compreensão da organização das práticas pedagógicas nas escolas normais paulistas e as influências recebidas da Pedagogia e das políticas públicas para a formação de professores polivalentes. Espera-se que os resultados obtidos nesta pesquisa possam contribuir com elementos históricos e reflexões que deem origem a novos estudos sobre a formação de professores no contexto brasileiro. / Pedagogical practices are educational practices that are organized to concretize certain pedagogical intentions. The objective of this work is to understand the main pedagogical practices that characterized the normal schools of São Paulo from the 1950s to the 1970s. It is a qualitative research with elements of narrative research that was constructed through bibliography review, interviews and documentary analysis. Information was collected in the Library of the School of Education of the University of São Paulo, in the Archive and Library of the former Normal School of Campinas and in the personal collection of the interviewees. The research initially investigated the historical aspects of the normal Brazilian and São Paulo school and the implications of public policies in teacher training. The theoretical references on the historical aspects were of Villela, Saviani and Almeida. It addressed concepts, aspects and dilemmas in the formation of multipurpose teachers. Regarding teacher training issues, the references were from Pimenta, Franco, Marcelo Garcia, Nóvoa and Libâneo. The research articulated a dialogue between the data collected and the formative memories of the interviewees. The reference on the use of narrative-interviews as research data was by Schütze and Bom Meihy. The choice of the interviewees, as former students of normal courses and currently teaching research teachers, has not only retrieved information, but memories permeated by reflection, which is a daily part of the research activities carried out by the researcher in education. It was verified through methodological triangulation with Gomes and Minayo reference that pedagogical practices carried out in normal schools between 1950 and 1970 reflected the national-developmental policy of that moment, with intense social control of the Brazilian State, through the feminization of teaching career. The educational ideology was from progressive education, but with strong influences of the traditional pedagogy. The performance of the Teaching Practice teacher was considered a key element for the teacher training of students of the normal course, who in their narratives recognized the relevance of this discipline. This study promoted the understanding of the organization of pedagogical practices in normal schools in São Paulo and the influences received from Pedagogy and public policies for the training of multipurpose teachers. It is hoped that the results obtained in this research can contribute with historical elements and reflections that give origin to new studies on teacher education in the Brazilian context. Keywords:

Made available in DSpace on 2016-04-27T16:33:18Z (GMT). No. of bitstreams: 1 SANDRA HERSZKOWICZ FRANKFURT.pdf: 1762948 bytes, checksum: 203a0e286ed4b6f94a4e098c4854667c (MD5) Previous issue date: 2007-02-26 / Conselho Nacional de Desenvolvimento Científico e Tecnológico / This work aims to investigate the practices of the Normal School celebrations in the city of Pirassununga, in the period between 30 's and 50 's decades of the last century. The intent is to analyze the practices of the school celebrations as one of the instruments of the educational career and of the republican social memory. For so much, take as sources, Cardim's Manual (1916), a anthem book found in the library of the school in Pirassununga, the legislation on the school celebrations, the magazines: Educação (1927-1930), Escola Nova (1930-1931), Educação (1931-1932), Revista de Educação (1933-1944) and Educação (1945-1961), besides the references on the subject in the newspaper O Movimento . To these sources, interviews with former- teachers of the Normal School of Pirassununga are added , who studied during the period that comprehends the research and a notebook produced in the Teaching Practice discipline for one of the former-teacher interviewee. To accomplish the proposed analysis, the celebrations of the Normal School of Pirassununga, carrying itself in counts the learning of the educational exercise, they were classified in celebrations of the school success and celebration to learn to do with . It verified that at Normal School celebrations of Pirassununga, besides composing the educational professional culture, they constitute the social memory of the city / Neste trabalho, objetiva-se investigar as práticas das festas da Escola Normal de Pirassununga, entre as décadas de 1930 e 1950. O intento é analisar as práticas das festas escolares como um dos instrumentos da profissão docente e da memória social republicana. Para tanto, toma-se como fontes o manual de Cardim (1916), um hinário encontrado na biblioteca da Escola, a legislação sobre as festas escolares, as revistas: Educação (1927-1930), Escola Nova (1930-1931), Educação (1931-1932), Revista de Educação (1933-1944) e revista Educação (1945-1961), além das referências sobre o assunto no Jornal O Movimento . A essas fontes, somam-se entrevistas com ex-normalistas da Escola Normal de Pirassununga que estudaram durante o período que compreende a pesquisa e um caderno produzido na disciplina Prática de Ensino por uma das ex-normalistas entrevistada. Para realizar a análise proposta, as festas da Escola Normal de Pirassununga, levando-se em conta o aprendizado do exercício docente, foram classificadas em festas do sucesso escolar e festas para aprender a fazer com . Constatou-se que as festas na Escola Normal de Pirassununga, além de comporem a cultura profissional docente, constituem a memória social da cidade

Ce mémoire présente une analyse de la réponse tribologique d’un contact cylindre/plan soumis à des sollicitations de fretting sous chargement complexe, à savoir une sollicitation normale de force sinusoïdale et une sollicitation tangentielle de déplacement sinusoïdal, toutes deux possiblement sujettes à des fluctuations d'amplitude, de fréquence et de déphasage entre sollicitations. On s'intéresse plus particulièrement à l’usure des guides de grappe en 304L par les crayons en 316L nitrurés, induite par les vibrations de l’écoulement du fluide primaire dans les réacteurs nucléaires.L’étude expérimentale menée dans un environnement non représentatif mais très simple, à savoir un milieu sec et à l'ambiante, montre une usure non négligeable des deux contre-corps ce qui révèle les propriétés fragiles du tube nitruré dans cet environnement. Une très forte dépendance des faciès d’usure avec l’amplitude de glissement est notée. Seule la cinétique d’usure du tube nitruré est influencée par l'évolution de la charge normale. Aussi, une description analytique de l’énergie de frottement est développée, en prenant compte de l’ensemble des paramètres de chargement.En solution aqueuse lithium-bore, choix de milieu un peu plus représentatif mais en restant néanmoins à l'ambiante, seul le plan en acier 304L s’use, le cylindre en acier 316L nitruré n’étant pas sujet à de l'usure détectable. Un couplage avec des phénomènes corrosifs est proposé. En fretting simple, le confinement du contact augmente localement la valeur du pH et l’analyse de l’influence de la fréquence de fretting suggère que seule la couche passive est usée entre chaque glissement. Sous chargement complexe, la fluctuation de la charge normale permet une meilleure accessibilité de la solution dans l’interface frottée, augmentant localement les effets tribocorrosifs. Une loi d’usure multiplicative prenant en compte les différents effets de fluctuation des sollicitations est introduite et sa stabilité est vérifiée.Un modèle de calculs par éléments finis permet de simuler les profils d’usure en fretting simple et aussi en présence de force normale variable. En fretting simple, les résultats de simulation d'essais où seul le plan 304L s'use sont satisfaisants. En revanche, la non-superposition des profils expérimentaux et numériques lorsque la force normale fluctue confirme la présence de phénomènes physiques dans l'interface non encore représentés dans l'outil numérique. / This PhD thesis presents an analysis of the fretting wear of a cylinder/plane contact subject to complex loading conditions, namely a normal sinusoidal force solicitation and a tangential sinusoidal displacement, both possibly subject to fluctuations in amplitude, frequency and phase shift between signals. The purpose of this work is to study the wear of 304L cluster guides by nitrided 316L rods due to flow-induced vibrations of primary fluid in nuclear reactors.Firstly, the experimental study conducted in a dry and ambient temperature - a non-representative but very simple environment - shows significant wear of both counter-bodies, which reveals the fragile properties of the nitrided tube in this environment. A very strong dependence of the fretting scar morphology with the sliding amplitude is noted. Only the wear kinetics of the nitrided tube is influenced by the evolution of the normal load. Also, an analytical description of friction energy is developed, taking into account all loading parameters.In a second hand, in aqueous lithium-boron solution, a slightly more representative choice of medium but still remaining in the ambient, only the 304L steel plane wears out, the 316L nitrided steel cylinder is not subject to detectable wear. A coupling with corrosive phenomena is proposed. In simple fretting, contact confinement locally increases the pH value. Moreover, the analysis of the influence of the fretting frequency suggests that only the passive layer is worn between each slip. Under complex loading, the fluctuation of the normal load allows a better accessibility of the solution in the rubbed interface, increasing locally the tribocorrosive effects. A multiplicative wear law taking into account the various effects of normal force fluctuation is introduced and its stability is checked.Finally a finite element calculation model is used to simulate wear profiles in simple fretting and also in the presence of variable normal force. Only cases where the plan wears out (lithium-boron environment) have been simulated. In simple fretting, test simulation results are satisfactory. On the other hand, the non-superposition of the experimental and numerical profiles when the normal force fluctuates, confirms the presence of physical phenomena in the interface which are not yet represented in the numerical tool.

Background: In Oman, 33.3% of women attended late for publicly funded antenatal care in 2015 and 24% did not attend for the recommended 4-6 visits during their pregnancy. This low attendance suggests a need to explore attendance for antenatal care for low-risk pregnant women in Oman. Methodology: An exploratory qualitative design informed by constructivist grounded theory methodology was used in this research. Methods: In-depth semi-structured interviews were conducted with an initial purposive sample of nine pregnant women. The initial analysis enabled theoretical sampling of thirteen non-participant observations during women's appointments, interviews with ten care providers, and six women who booked late after 12 weeks of gestation. A constructivist grounded theory analytical framework of initial, focused and theoretical coding was followed to analyse all the data collected. Findings: The core category consists of five interrelated sub-categories: perceived benefits and value of antenatal care; timing of the first antenatal visit; woman-carer interactions during antenatal care; experiences with antenatal care delivery; and supplementary use of private healthcare. The integral categories explain the social processes and issues surrounding antenatal care. The emergent core category, Navigating antenatal care, reflects the views of the women and their care providers. The women were unhappy with the organisation and physical environment of care but attended their appointments to ensure optimal pregnancy outcome and to alleviate their fears of developing complications. Thus, they used both private and public healthcare and sourced online information in response to their feelings of obligation to protect their fetus. Conclusion: The women appeared disempowered and to lack control over the care they received. Thus, they accepted conditions such as long waiting times in an uncomfortable environment and the disrespect they encountered during their visits. There was a discrepancy between what the women expected and needed from their antenatal care and the actual care and information they received, which did not satisfy their needs. This could be due to a lack of woman-centred care and limited involvement in the plan of care. Thus, women sought further reassurance by accessing private clinics, using online information, and networking with others, which also resulted in a late booking for public antenatal care.

Orientadora: Iraíde Marques de Freitas Barreiro / Banca: Ana Clara Bortoleto Nery / Banca: Maria de Fátima Barbosa Abdala / Resumo: Este estudo comparado aborda o tema da formação de professores para a educação infantil e os anos iniciais do ensino fundamental e tem por objetivo discutir a proposição de dois cursos diferentes para a formação de um mesmo profissional, o professor, nos cursos de Pedagogia e Normal Superior, após a aprovação da Lei de Diretrizes e Bases da Educação Nacional nº 9.394/96. Grande parte das expectativas relacionadas ao sucesso da educação é atribuída ao desempenho do professor, e do mesmo modo lhe são tributadas as responsabilidades pelo fracasso educacional, sendo ele apontado como um profissional despreparado para lidar com questões da atualidade e limitado para promover avanços na educação. Esses são alguns dos argumentos utilizados para a implantação das novas políticas de formação docente. As propostas dos cursos Normal Superior e de Pedagogia na formação inicial de professores, longe de um consenso, apresentam divergências justificadas pelas diferentes concepções de formação do professor entre os formuladores de leis, estudiosos e demais profissionais da educação. O estudo dos cursos de formação docente contribui para a retomada de questões como a incoerência entre a atuação docente almejada expressa na legislação educacional, a formação a que têm acesso e os conhecimentos necessários para o trabalho docente. / Abstract: This comparative study tackles the issue of teacher education for children and the first years of elementary teaching and it aims to discuss the proposition of two different courses for the formation of the same professional, the teacher, in Pedagogical Courses and Normal Courses at superior level, after the law 9394/96. Great part of the expectations related to the success of education is granted to the teacher’s performance, as are the responsibilities for educational failure, and the teacher is seen as an unprepared professional to deal with current issues and too limited to promote progress in education. These are some of the arguments used to the implantation of new policies for teaching formation. The proposals of the Normal Courses at superior level and Pedagogical Courses in the beginning of teacher education, far from reaching a consensus, present unconformities justified by different conceptions of teacher formation among lawmakers, studious and other professionals in education. The study of the courses for teacher education contributes to a return to questions such as the incoherence between the expected teaching performance as expressed in the educational legislation, the formation to which the teacher has access to and the necessary knowledge for teaching. / Mestre

Este trabalho apresenta um estudo geral sobre o dimensionamento e verificação de pilares esbeltos de concreto armado solicitados por flexão composta oblíqua, levando-se em consideração as não-linearidades física (o material não segue a lei de Hooke) e geométrica (análise em 2ª ordem). É abordado também o dimensionamento de seções isoladas no Estado Limite Último de ruptura. É admitida seção transversal de forma poligonal qualquer, assim como disposição da armadura também arbitrária. O efeito de carregamento de longa duração (fluência) é levado em consideração. A relação tensão-deformação do concreto é geral, admitida como uma seqüência de polinômios de graus arbitrários. Vários algoritmos detalhados e rotinas computacionais são apresentados. / This work presents a general study on the design and veriflcation of slender reinforced concrete columns, subjected to axial force and biaxial bending, considering material and geometric non-linearities (material doesn\'t fit Hooke law and second order analysis). It is also treated the design of cross sections in the ultimate strength. It is considered a general poligonal cross section, with any reinforcement distribuition. The creep effect is also taken into account. The concrete stress-strain curve is anyone since it can be represented as a sequence of any degree polinomiuns. Detailed calculation and computational routines are given too.

A abordagem de modos normais de baixa frequência na descrição das flutuações conformacionais dos estados nativos das proteínas globulares tem ajudado na caracterização das suas funções biológicas. Vários métodos teóricos e experimentais têm sido empregados para a determinação destas flutuações internas. Estes movimentos podem ser caracterizados pelo fator Debye-Waller (fator-B), correspondente à mobilidade local do resíduo em nível atômico. A análise de modos normais utilizando os modelos de rede elástica (ENM) demonstra ser uma técnica robusta. Fatores-B experimentais são reproduzidos teoricamente por meio desta técnica em tempos computacionais relativamente curtos, mostrando-se competitiva com as técnicas mais sofisticadas. O modelo de rede elástica é uma abordagem t ipo coarse-grain na qual a proteína no seu estado enovelado é representada por uma rede elástica tridimensional de carbonos conectados por molas. As molas representam as interações ligantes e não ligantes entre os carbonos . Neste trabalho, inicialmente, estudamos os modelos de rede elástica já conhecidos na literatura. Em seguida, realizamos um estudo comparativo entre eles. Neste estudo, comprovamos que os modelos pfGNM e pfANM apresentam melhor correlação com os fatores-B experimentais que os os modelos GNM e ANM tradicionais. Desenvolvemos também uma nova abordagem, a qual intitulamos número de contatos ponderados anisotrópica (AWCN). Mostramos que a abordagem AWCN apresenta um desempenho significativamente melhor que o modelo de rede elástica anisotrópica tradicional. Por fim, realizamos um estudo de caráter investigativo do comportamento do peso das interações entre resíduos. Este estudo re velou que, para os modelos WCN e AWCN, a correlação exibe o seu valor máximo para interações ponderadas $1/R^p$, entre resíduos $i$ e $j$j, para valores de $p$ em torno de 2. Nos modelos pfGNM e pfANM a correlação é maximizada para dois valores de $p$, o primeiro em torno de 2 e o segundo em torno de 4,75, indicando que a ponderação pelo recíproco do quadrado da distância, usualmente empregada na literatura, pode não ser adequada para obter a melhor correlação. / Low frequency normal mode approach to describe conformational fluctuations of globular proteins has helped to characterize their biological functions. Various theoretical and experimental methods have been employed to det ermine the magnitudes of those internal motions. Those motions can be characterized by the Debye-Waller factor (B-factor), co rresponding to the local mobility of the residue at the atomic level. Normal mode analysis using elastic network models (ENM) has demonstrated to be a robust technique. Experimental B-factors has been reproduced theoretically by means of this techniq ue in a short computational time and it has been shown to be competitive with more sophisticated techniques. The ENM is a coarse-grained approach in which the protein is represented by a three-dimensional elastic network of alpha-carbon atoms connect ed by springs. Springs represent bonded and non-bonded interactions between the alpha-carbon atoms. In this work, we study th e elastic network models known in the literature. Next, we perform a comparative study between them. We show that the pfGNM a nd pfANM models present better correlation with experimental B-factors than the traditional GNM and ANM models. We also devel op a new approach, which we entitled anisotropic weighted contact number (AWCN). We show that it presents results significantly better than the traditional anisotropic elastic network model. Finally, we perform a study of investigative character of the behavior for the weight of the interactions between residues. This study revealed that, for the WCN and AWCN models, the correlation exhibits its maximum value for weighted interactions $1/R^p$, between residues $i$ and $j$, for values of $p$ around 2. In the pfGNM and pfANM models the correlation is max imized for two values of $p$, the first one around 2 and the second one around 4.75. This indicates that the weighting by the reciprocal of the square of the distance, usually employed in the literature, may not be appropriate to obtain the best correlation.

Sistemas alostéricos são característicos de proteínas com um ou mais estados de equilíbrio. Nesse sentido, uma enzima passa por modificações de sua atividade quando um substrato cooperativo se liga a um estado ou outro (1). Estes estados são reconhecidos por possuírem uma conformação mais estável e coexistirem num ensemble. Este trabalho sustenta que tais proteínas oscilem naturalmente entre esses estados. Experimentos de difração de raios-X e RMN, que proporcionam parâmetros de deslocamento anisotrópicos e tempos de relaxação de spin nuclear, já demonstram a coexistência de ambos estados em solução e descrevem o movimento como uma mudança de equilíbrio populacional dos confórmeros (2). Também é possível desenvolver métodos numéricos, como o cálculo de modos normais e a simulação de dinâmica molecular, para associar a geometria proteica a um movimento sobre determinado potencial de campos de força. O sistema adotado para o desenvolvimento desses estudos é a enzima alostérica Glucosamina-6-fosfato Desaminase. Características que defendem seu uso são sua reversibilidade catalítica, rápido equilíbrio cinético e muito baixa afinidade do estado T por ligantes. Sua estrutura também já foi resolvida por experimentos de cristalografia, identificando ambos estados alostéricos. E a caracterização das mudanças estruturais entre os estados T e R está bem estabelecida, identificando diferentes subunidades a distintos graus de rotação e prevendo uma oscilação de baixa frequência entre eles (3). Resultados obtidos neste projeto constituem: (a) uma dinâmica de 100ns partindo do estado T de toda a proteína (hexamérica) solvatada explicitamente, formando um ensemble NVT de 92000 átomos através do programa NAMD, usando o campo de forças CHARMM; (b) análise de componentes principais aproveitando esta dinâmica e usando algoritmos do programa Gromacs; (c) e análise de modos normais, em que os cálculos de minimização de energia foram feitos pelo programa Gromacs sob o campo de forças ENCADV, no vácuo. Análises desses resultados envolvem cálculos de RMSDs e flutuações, trajetórias calculadas para os autovetores oriundos de NMA ou de PCA, fatores de Debye-Waller e a confirmação visual (e gráficos de distância entre resíduos) de aproximação a um estado ou outro. Como a prévia caracterização da movimentação alostérica, identificava duas regiões para cada monômero como representativas de corpos rígidos, também é desenvolvida uma análise por tensores de inércia. Espera-se que, ao longo do tempo, essas subunidades se comportem como corpos quase rígidos e os movimentos destas regiões rígidas correspondam a uma maior representatividade da transição alostérica. Assim, a caracterização dos tensores seria capaz de filtrar movimentos de mais alta frequência que constituem ruído em relação a movimentos funcionais da proteína. - Algoritmos para cálculos matriciais dos tensores foram escritos em Fortran e em TCl. / Allosteric systems are characteristic of proteins with one or more equilibrium states. Such an enzyme experiences a modification of its activity when a cooperative substrate binds to a state or another, thus, establishing a change in population equilibrium (1). These states are recognized by having a more stable conformation, and they coexist in an ensemble. X-ray diffraction and NMR experiments already demonstrated this dynamic equilibrium, and simulation methods, as molecular dynamics and normal mode analysis, generally provide a more complete proof (2).The allosteric enzyme Glucosamine-6-Phosphate Deaminase appeared to be a good model to better understand the equilibrium dynamics as essential to the protein function, given its reversibility of the catalysis and rapid-equilibrium kinetic mechanism. It also has the structure elucidated for both its conformers (3). A computational approach would now give better perspective on how the conformational changes occur. A set of results of this latter kind were obtained: (a) a 100ns dynamic starting at the hexameric T conformer, explicitly solvated, building a NVT ensemble using NAMD program and CHARMM force field; (b) a principal components analysis making use of the calculated dynamic and of the Gromacs algorithms; (c) and normal mode analysis of the T conformer structure (pdb code 1fsf) minimized with Gromacs program using ENCADV vacuum force field. Not only the conventional analyses for these results (fluctuations and projections) were taken, but also an inertia tensor analysis was developed. As the allosteric conformational change, for this protein, was described by the displacement of only two rigid body subunits³, its description by inertia tensors should act as a filter for the high frequency and functionally uninteresting motions, which normally constitute only noise.

Some tinnitus patients have normal hearing on the conventional audiogram. It has been suggested that the presence of a limited area of damaged outer hair cells (OHCs) with intact inner hair cells, which is not detected on the audiogram, results in unbalanced neural activity between Type I and Type II fibers leading to tinnitus. Distortion product otoacoustic emissions (DPOAEs) provided ambiguous data of OHC function in normal-hearing tinnitus patients when compared to non-tinnitus controls. It is known that hearing loss in the extended high frequency (EHF) region may decrease DPOAEs evoked at lower frequencies. Results of EHF audiometry in tinnitus patients are limited. The aim of the study was to evaluate DPOAEs and EHF thresholds in normal-hearing patients reporting unilateral tinnitus in left ear. Thus, each subject acted as their own control. Data were obtained for 25 subjects with bilateral hearing thresholds 3dB. Median audiometric data showed that thresholds in the left ears were significantly higher than those in the right ears at all four EHFs. Mean DPOAE levels of the left ears were lower than those of the right ears in the frequency range above 1 kHz. Additionally, a paired-comparison test of DPOAE levels of each patient’s right and left ear revealed significant differences at 6, and 8 kHz. The results indicate that: 1. OHC impairment in the most basal region reduces contribution to more apically generated DPOAEs; 2. OHC impairment in a limited area, which may be revealed by DPOAEs but not by conventional audiometry, can contribute to tinnitus generation; and 3. patients with unilateral tinnitus and normal hearing on the conventional audiogram are likely to demonstrate hearing loss in the EHF region.