oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2018 ( 7 )

2017 ( 6 )

2016 ( 5 )

2015 ( 32 )

Custom range...

Search Results: 1 - 10 of 1398 matches for " Gislaine Ferro;Tsuji "
All listed articles are free for downloading (OA Articles)
Page 1 /1398
Display every page Item
Comparison of Tongue and Lip Trills with Phonation of the Sustained Vowel /ε/ Regarding the Periodicity of the Electroglottographic Waveform and the Amplitude of the Electroglottographic Signal  [PDF]
Gislaine Ferro Cordeiro, Arlindo Neto Montagnoli, Maysa Tibério Ubrig, Marcia Helena Moreira Menezes, Domingos Hiroshi Tsuji
Open Journal of Acoustics (OJA) , 2015, DOI: 10.4236/oja.2015.54018
Abstract: Aim: The aim is to compare the vocal fold vibration seen during lip and tongue trills with that seen during phonation of the sustained vowel /ε/, in terms of the periodicity of the EGG waveform and the amplitude of the EGG signal, in professional voice users. Study design: This was a quasi-experimental study. Methods: We used electroglottography (EGG) to compare the vocal fold vibration seen during tongue and lip trills with that seen during phonation of the sustained vowel /ε/, in terms of the EGG waveform periodicity and signal amplitude, in 10 classically trained, professional singers. The participants produced the sustained vowel /ε/ and performed tongue and lip trills at the same frequency and intensity. The periodicity of the waveform and the amplitude of the signal were visually analyzed by three blinded, experienced readers. To confirm the visual analysis results, we measured the jitter and shimmer of the signal and the frequency of variation in vocal fold vibration during the trill exercises. Results: The EGG waveform was classified as periodic for the sustained vowel phonation task and as quasi-periodic for the trill exercises, the vibration pattern repeating at approximately 24 Hz. Conclusion: The vibration of the vocal folds was modified according to the supraglottic movement in trills exercises.
High-speed kymography identifies the immediate effects of voiced vibration in healthy vocal folds
Pimenta, Regina Aparecida;Dájer, María Eugenia;Hachiya, Adriana;Cordeiro, Gislaine Ferro;Tsuji, Domingos Hiroshi;Montagnoli, Arlindo Neto;
International Archives of Otorhinolaryngology , 2013, DOI: 10.7162/S1809-97772013000100013
Abstract: introduction: the effects of voiced vibration technique can be assessed by laryngeal imaging. kymographic images derived from high-speed videoendoscopy allow actual visualization of vocal folds vibration. purpose: the aim of this study is to identify the immediate effects of the voiced vibration technique in healthy vocal folds using high-speed digital laryngeal imaging. methods: samples were obtained from 15 healthy subjects with no history of voice disorders (6 men and 9 women aged 21 to 43 years). high-speed videoendoscopy recordings were performed before and after the voiced vibration technique. kymographic images were obtained using high-speed videoendoscopy. the vocal folds were examined in their open and closed positions and the characteristics of the opening and closing phases were determined. a customize computational routine was used quantify these parameters. the closing, opening, and speed quotients were also calculated. results: in this study, women displayed statistically significant differences in opened phase (p= 0.05*), closed phase (p= 0.046*), and closing phase (p= 0.026*) phase characteristics. men displayed the highest difference rate in opening time characteristics (p= 0.06). the closing and opening quotients for the female group showed significant differences (p= 0.029* and p= 0.049*, respectively). the speed quotient exhibited statistically significant differences in the male group (p= 0.048*). conclusion: the kymographic images indicated that the immediate effect of the voiced vibration technique was smooth contact in healthy vocal fold vibration.
Características vocais do canto japonês nos gêneros enka e mudo enka
Nishimura, Cintia Megumi;Camargo, Zuleica;Cordeiro, Gislaine Ferro;Pinho, Sílvia Maria Rebelo;
Revista CEFAC , 2006, DOI: 10.1590/S1516-18462006000400010
Abstract: purpose: to compare from a perceptual perspective the vocal characteristics of enka and mudo enka japanese singing genre. methods: ten recordings, from commercially available cds, of five professional japanese singers who sing the enka genre and five of the mudo enka genre were selected. we elaborated a voice evaluation protocol with vocal characteristics found in both genres of japanese music. the evaluation was carried out by three speech pathologists, licensed by the speech pathology federal board, who determined the most outstanding vocal characteristics of each genre, from a literature-based stratification. results: in the enka genre, the kobushi, the vibrato and crescendos and decrescendos were present in 100% of the vocal samples. we found 80% of metal, 90% of nasality and registration alternation and 70% of soprosity. in the mudo enka genre, the crescendos and decrescendos were present in 100% of the vocal samples. we found 70% of soprosity, 90% of vibrato, 50% of registration alternation, 40% of metal and 20% of nasality and kobushi. conclusion: when comparing the two genres, enka and mudo enka, we verified the strong presence of kobushi in the enka genre, along with a larger predominance of vibrato, metal, nasality, alternation of registrations and crescendos and decrescendos. the soprosity was found in equal rates in both genres. the identification of vocal characteristics is useful for the speech pathologist as well as singing professors when helping their clients (singers) during the learning of the japanese singing or in its improvement.
High-speed kymography identifies the immediate effects of voiced vibration in healthy vocal folds
Pimenta, Regina Aparecida,Dájer, María Eugenia,Hachiya, Adriana,Cordeiro, Gislaine Ferro
International Archives of Otorhinolaryngology , 2013,
Abstract: Introduction: The effects of voiced vibration technique can be assessed by laryngeal imaging. Kymographic images derived from high-speed videoendoscopy allow actual visualization of vocal folds vibration. Purpose: The aim of this study is to identify the immediate effects of the voiced vibration technique in healthy vocal folds using high-speed digital laryngeal imaging. Methods: Samples were obtained from 15 healthy subjects with no history of voice disorders (6 men and 9 women aged 21 to 43 years). High-speed videoendoscopy recordings were performed before and after the voiced vibration technique. Kymographic images were obtained using high-speed videoendoscopy. The vocal folds were examined in their open and closed positions and the characteristics of the opening and closing phases were determined. A customize computational routine was used quantify these parameters. The closing, opening, and speed quotients were also calculated. Results: In this study, women displayed statistically significant differences in opened phase (P= 0.05*), closed phase (P= 0.046*), and closing phase (P= 0.026*) phase characteristics. Men displayed the highest difference rate in opening time characteristics (P= 0.06). The closing and opening quotients for the female group showed significant differences (P= 0.029* and P= 0.049*, respectively). The speed quotient exhibited statistically significant differences in the male group (P= 0.048*). Conclusion: The kymographic images indicated that the immediate effect of the voiced vibration technique was smooth contact in healthy vocal fold vibration.
Exploring the Priced Factors in ICAPM in Japan  [PDF]
Chikashi TSUJI
Modern Economy (ME) , 2011, DOI: 10.4236/me.2011.24078
Abstract: This paper investigates the priced factors in the Intertemporal Capital Asset Pricing Model (ICAPM) in the Tokyo Stock Exchange (TSE) in Japan. Focusing on the time-varying covariance risks derived by the multivariate Generalized Autoregressive Conditional Heteroskedasticity (GARCH) model, we find new priced state variables in Japan. That is, our empirical tests reveal that in the TSE, the time-varying covariance between market return and illiquidity measure and that between market return and the log change of the seasonally adjusted industrial production are statistically significantly priced state variables in the ICAPM.
Stock Return Conjunction in Markets with Deteriorated Sentiment: Evidence from the Japanese Electric Appliances Industry  [PDF]
Chikashi Tsuji
Modern Economy (ME) , 2012, DOI: 10.4236/me.2012.34060
Abstract: This paper aims to clarify the characteristics of stock return dynamics when investor sentiment is deteriorated in equity markets. Further, prior to our empirical analysis, we newly develop the measures of return conjunction and the exponentially weighted correlation coefficient. Namely, our contributions are as follows. First, this paper clarifies the fact that when market sentiment is deteriorated, stock returns present conjunctional behavior. Second, for our empirical analysis, we newly develop two kinds of conjunction measures of stock returns. Third, we also develop the exponentially weighted correlation coefficient measure referring to the exponentially weighted volatility suggested by J.P. Morgan. This correlation measure is a useful tool because it captures forward-looking correlation without difficulty caused by model estimation.
Value Premium and Portfolio Return Regime: Evidence from European Equities  [PDF]
Chikashi Tsuji
Modern Economy (ME) , 2018, DOI: 10.4236/me.2018.93028
Abstract: This paper examines the profitability of four European higher return stock portfolios and their linkages between the value premium factor return, high-minus-low (HML), developed by Fama and French. Our fundamental analyses and quantitative examinations using Markov switching models derive the following findings. First, in the four higher return stock portfolios in Europe, the smallest and the highest momentum portfolio shows the highest return. Second, the second smallest and the highest book-to-market (BM) portfolio, the second smallest and the highest operating profitability portfolio, and the second smallest and the second lowest investment portfolio for Europe also demonstrate higher excess returns than the overall stock market in Europe. Furthermore, we also clarify that for all the four European stock portfolios, there clearly exist two regimes: one is positively associated with the value premium factor return, HML, and the other is negatively associated with HML. We further reveal that recently, for all the four portfolios, the high value premium factor loading regimes shift to the other regimes that are uncorrelated with HML. This indicates that, in the recent periods, hedging and risk-diversification effects can be recognized in investing value stocks and the four higher return stock portfolios in Europe.
How Are Structural Breaks Related to Stock Return Volatility Persistence? Evidence from China and Japan  [PDF]
Chikashi Tsuji
Modern Economy (ME) , 2018, DOI: 10.4236/me.2018.910102
Abstract: This study empirically examines the effects of structural breaks on equity return volatility persistence by using Chinese and Japanese equity index return data. Applying standard GARCH models and two kinds of structural break dummy variables, we derive the following findings. First, we reveal that for both Chinese and Japanese equity index returns, the values of GARCH parameters of standard GARCH models decline when the first structural break dummies are incorporated. Second, our analyses further clarify that for both Chinese and Japanese equity index returns, the values of GARCH parameters of standard GARCH models again decline when different kinds of structural break dummies are incorporated.
Discrimina??o entre vozes adaptadas, levemente soprosas e tensas: diferen?as entre os dois primeiros harm?nicos
Cordeiro, Gislaine Ferro;Cunha, Maria Gabriela Bernardo da;Menezes, Márcia Helena Moreira;Ubrig-Zancanella, Maysa Tibério;Nemr, Kátia;
Revista da Sociedade Brasileira de Fonoaudiologia , 2010, DOI: 10.1590/S1516-80342010000200015
Abstract: purpose: to verify the efficacy of the values of the difference between the first two harmonics to distinguish adapted voices from slightly breathy (b) or tense (s), during the emission of the long vowel /é/. methods: thirty women with normal and altered voices were evaluated. each subject's vowel "é" was recorded in order to extract the intensity of the first two harmonics, using the fft graph. the range of the second harmonic was subtracted from the range of the first, and data were treated statistically. results: the variation between the values of h1-h2 between subjects rated 0 breathiness and tension and subjects rated 1, also in both parameters, was very high, therefore the values were not statistically significant. however, when the degrees of breathiness and tension get to 2, the variation values become more compatible with descriptions in literature. conclusion: the measure studied is not efficient to distinguish adapted voices from those slightly breathy and tense, during the emission of the long vowel /é/.
Identification of the Bacterial Gene in Patients Who Repeatedly Develop Streptococcal Pharyngitis  [PDF]
Yuichiro Tsuji, Ichihashi Izumi
International Journal of Clinical Medicine (IJCM) , 2012, DOI: 10.4236/ijcm.2012.37121
Abstract:

Background: We aimed at determining whether the pathogenic bacteria at the onset of disease are genetically different and whether this affects future choice of the therapeutic methods against group A β-hemolytic streptococcal acute pharyngitis/tonsillitis. Methods: A pharynx swab was collected from pediatric patients who visited our hospital. The swab was cultured, and hemolytic streptococcus was detected 230 times. We isolated pathogenic bacteria of patients infected more than once and examined the bacteria using pulse-field gel electrophoresis. Results: Based on gene search results, we found that if the period of developing relapse was within 1 month from the first infection, all patients had the same gene. However, all patients in whom reinfection occurred after 6 months or later had different pertinent genes. Conclusions: The number of relapse/reinfection is significant for this disease, and considerably caution is essential for its treatment. No changes to antibacterial drug administration may be necessary for the second administration unless more than 6 months have passed since the first infection.

Page 1 /1398
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.