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성대용종 음성에 대한 음향지표와 청지각지표의 상관관계 연구
이현두,전이슬,홍기환,Lee, Hyun Doo,Jeon, Yi Seul,Hong, Ki Hwan 대한후두음성언어의학회 2015 대한후두음성언어의학회지 Vol.26 No.1
Objectives:This study aims to investigate the correlation between the measurements of Praat as an acoustic evaluation and those of GRBAS and CAPE-V as perceptual rating tool respectively. Through this, it also tries to find out parameters to which attention should be paid when an evaluator, who is untrained in auditory-perceptual voice evaluation, conducts voice evaluation with objective tool. Materials and Methods:Voice samples of this study were 33 vocal polyp patients(23 males and 10 females) who visited our Department of Otorhinolaryngology. They sustained vowel voices of 'e' were recorded and acoustically analyzed. Results:As the results of correlation analysis between GRBAS and Praat measurements, G scale and R scale showed statistically significant correlation with Jitt, Shim and NHR. And it is found that B scale represented significant correlation with Jitt, S scale with Shim. As the results of analysis on correlation with CAPE-V and Praat measurements, OS scale and R scale showed statistically significant correlation with Jitt, Shim and NHR. B scale represented significant correlation with Jitt, S scale with Shim. Conclusion:Although, both GRBAS and CAPE-V were highly reliable, in comparison between CAPE-V and Pratt, more parameters that showed statistically significant correlation are observed, which implies that VAS has more potential to make detailed evaluation than ORD.
이현두(Hyun-Doo Lee),전세봉(Se-Bong Jeon),김종규(Jong-Gyu Kim),우명호(Myung-Hoo Woo),류승표(Seung-Pyo Ryu),이세현(Se-Hyun Lee) 전력전자학회 2008 전력전자학술대회 논문집 Vol.- No.-
The main purpose of this study is to design and develop the information display device for power conditioning system of photovoltaic power generation system. The function of this device is to display the information, communicate with PCS controller and store the special information. The developed device is tested to verify the performance and experimental results show the excellent performance. An actual running test is being carried out to verify the reliability of the device including PCS by applying it to 10kW level photovoltaic power generation system established in Ulsan College.
이현두 ( Lee Hyun Doo ),윤성훈 ( Yun Seong Hun ) 한국경찰학회 2019 한국경찰학회보 Vol.21 No.4
이 연구는 경찰 PR 실무자들과 기자들이 형성하고 있는 언론관계성에 대한 경찰 PR 실무자들과 기자들의 인식 차이를 경험적으로 검증하기 위한 목적으로 수행되었다. 연구의 목적을 달성하기 위하여 경찰을 취재하고 있거나 취재한 경험이 있는 전국의 기자 102명과 PR 업무를 담당하고 있거나 PR업무 경험이 있는 전국의 경찰관 101명을 대상으로 자료를 수집 분석하였다. 분석결과, 경찰 PR 실무자들과 기자들은 언론관계성을 형성하는 차원 중 헌신성에서 가장 큰 차이를 보였고, 체면과 인정에서도 차이를 보였다. 신뢰성에서는 경찰 PR 실무자들과 기자들이 통계적으로 유의미한 차이를 보이지 않았지만 경찰 PR 실무자들뿐만 아니라 기자들도 긍정적이었다. 이러한 결과는 경찰 PR 실무자들에게 기자들은 공적인 부분을 더 우선시하는 집단으로 인식되고 있기 때문인 것으로 판단된다. 반면에 만족성과 상호통제에서는 경찰 PR 실무자들과 기자들 모두 부정적이었고 서로 간의 차이도 없는 것으로 나타났다. The purpose of this study is to empirically verify the difference of perceptions of police PR practitioners and reporters about the relationship between PR practitioners and reporters. In order to accomplish the purpose of the study, the data were collected and analyzed among 102 journalists nationwide who covered or had experience covering police, and 101 police officers nationwide who were in charge of PR affairs or had experience in PR affairs. As a result of the analysis, the PR practitioners and reporters showed the greatest difference in commitment among the dimensions of forming the relationship of media, and also showed differences in face and favor. In terms of reliability, there was no statistically significant difference between police PR practitioners and reporters, but reporters as well as police PR practitioners were positive. This is because reporters are perceived as a group that gives more priority to the public part to police PR practitioners. On the other hand, in the satisfaction and mutual control, both the PR practitioners and the reporters were negative and there was no difference between them.
적갑상선 전절제술 환자의 방사성 동위원소치료 전.후 음성의 변화에 대한 연구
홍기환,서은지,이현두,윤연섭,임석태,Hong, Ki Hwan,Seo, Eun Ji,Lee, Hyun Doo,Yoon, Yun Sub,Lim, Seok Tae 대한후두음성언어의학회 2013 대한후두음성언어의학회지 Vol.24 No.1
Background and Objectives:This study is to objectively compare and analyze the acoustic changes in the patients with total thyroidectomy before and after RI therapy. Subjects and Methods:For this study, a total of 50 patients with total thyroidectomy were participated as subjects. Voice samples were obtained at the time of post-operation (Post-OP), before high-dose radioactive iodine therapy (Pre-RIT), and after high-dose radioactive iodine therapy (Post-RIT). Acoustic analysis, the maximum phonation time and K-VHI (Korea-Voice handicap index) were used for subjective evaluation. Results:According to the comparison analysis of the three periods, mFo (Hz) was significantly reduced in all of the vowels /a/ and /i/ as the hormone was discontinued. This can be related to the reduction in vocal range. As thyroid hormone was discontinued, Shim (%) and APQ (%) values, which are the parameters related to the degree of aggressiveness, showed a significant increase in the middle vowel /a/. As thyroid hormone was discontinued, emotional index was significantly decreased in VHI (voice handicap index). Conclusion:These results can be assumed that thyroid hormone suspension is related to the increased changes in the vocal intensity, the increase in noise and the reduction in vocal range. Emotionally, these data can be assumed that the responsive factors of one's own voice disorders were significantly decreased in the patients with vocal handicap.