후두 스트로보스코프 검사의 신호 동기화를 위한 진동 검출기의 유용성

이진춘,이병주,왕수건,노정훈,권순복,조철우,Lee, Jin-Choon,Lee, Byung-Joo,Wang, Soo-Geun,Roh, Jung-Hoon,Kwon, Sun-Bok,Jo, Cheol-Woo 대한후두음성언어의학회 2007 대한후두음성언어의학회지 Vol.18 No.1

Objective and Background: Laryngeal stroboscope is an useful equipment in evaluation of vocal cord vibration and in early detection of mucosal lesion including invasive cancer of the vocal cord. Recently Lee et al. (2006) developed portable stroboscope using voice as synchronization signal. It has been frequently impaired ability to synchronize the flashes even in normal female. Authors tried to investigate various methods including vibration pick-up, microphone, laryngeal microphone, and contact microphone for development of simple and accurate method like electroglottograph signal. The purpose of this study was to estimate wheher the vibration pick-up is available and is consistent with the signal of EGG. Subjects and Methods: Authors compared the signals between EGG and noncontact method such as voice, contact methods including vibration pick-up, laryngeal microphone, and contact microphone in normal twenty adults (male 10 and female 10). The number of peak in one cycle was compared with the number of the peak in EGG, and the percent of phase difference in the peak was compared with EGG Also, authors tried to investigate which site of vibration pick-up was most effective for synchronization of stobo flashes. Three site including anterior neck below the cricoid cartilage, thyroid ala, and suprahyoid region were analysed. Results: Among various methods for synchronization of strobo flashes, vibration pick-up was most effective method in peak detection. And anterior neck below cricoid cartilage was the most available site of the vibration pick-up. Conclusion: Authors suggest that vibration pick-up is most available and effective method for synchronization of strobo flashes.

성대진동검사의 최신 지견

이진춘,배인호,Lee, Jin-Choon,Bae, Inho 대한후두음성언어의학회 2021 대한후두음성언어의학회지 Vol.32 No.1

Human vocal cords vibrate as quickly as 100-250 times per second, so it is impossible to observe them with normal endoscopic diagnostic equipment. High-speed videolaryngoscopy (HSV) allows the visualization of non-periodic vibratory motion of vocal fold beyond the limitation of videostroboscopy. New developed post-processing methods that converts HSV to two-dimensional videokymography (2D VKG) using U-medical image-processing software can provide quantitative information on vocal fold mucosa vibration. Multifunctional laryngeal examination system is composed of 3 kinds of examinations such as HSV, 2D scanning digital kymography (2D DKG) and line scanning digital kymography (DKG). Evaluation of entire vocal cord vibratory pattern in each cord is possible using 2D DKG and a faster and more reliable quantitative information can be obtained. As this system is used in clinical and research, it is expected to bring much advances to the diagnosis of voice disorders. In this review, I will introduce the principles and advantages on examination of the vocal fold vibration, which is in the spotlight recently, and proceed with the literature review.

부분최소자승법경로모형을 이용한, 교육서비스품질, 학교브랜드이미지, 성과가 학교충성도에 미치는 영향력

이송근(Song-Keun Lee),박기주(Ki-Joo Park),이진춘(Jin-Choon Lee) 한국산업경영학회 2011 경영연구 Vol.26 No.1

본 연구는 중등교육이 점차 무한경쟁시대에 들어감에 따라 학교경쟁력을 확보하는 차원에서 교육품질과 학교브랜드 이미지가 학교성과에 미치는 영향을 분석하는데 관련된다. 즉, 교육서비스품질이 학교브랜드 이미지, 학교성과 그리고 학교충성도에 미치는 단계별 경로에 대해서 영향력의 차이를 분석하였다. 본 연구는 선행연구들(이진춘, 최황, 2008; 이진춘, 2009)을 통합하여 재분석을 실시한 것으로서, 선행연구들이 개인수준의 분석을 실시함으로 인해 학교 간 특성 차이를 식별할 수 없는 문제점을 해결하고자 하였다. 즉, 본 연구에서는 학교수준에서 분석을 실시하여 학교간 특성을 식별해 내도록 노력하였다. 또한 교육체계가 다른 포항시와 대구시를 비교함으로써 평준화와 비평준화지역의 차이를 도출하고자 하였다. 그 결과, 대구시 고등학교는 교육서비스품질이 학교충성도에 유의한 영향을 주고 있으나, 포항지역 고등학교는 학교성과가 더 큰 유의한 영향을 주는 것으로 나타났다. 이는 비평준화지역인 포항시에서 학생들의 학교성과가 더 중요하게 나타난 것이다. This study tried to survey empirically to identify the differences, between Pohang and Daegu region in the influences of education service quality, school brand image and its performance on the school loyalty, in the context that he school brand image is a dual scale of the education quality. In other words, this study analyzed the differences of influences in three paths, which are consisted above-mentioned three latent variables, including education service quality, school brand image and school performance. This study also reanalyzed the data collected and used in the previous researches, such as Lee and Choi(2008) and Lee(2009), in the level of organization of school, in order to attempt to solve the problem that the features of organization and region had not been considered. Also, this study attempted to identify the difference between the performance of Daegu region which adopted the high school standardization system and that of Pohang which did not adopt the system. Concludingly, education service quality had influenced to school loyalty significantly in Daegu region, but on the other hand, school performance had more influence than education quality, in which the performance of students were considered more importantly in the Pohang that did not adopt the high school standardization policy.

경로분석을 이용한 TQM실행요인, 생산관리 목표와 경영성과 간의 인과관계분석

이진춘(Jin Choon Lee),이상진(Sang Jin Lee),이홍우(Hong Woo Lee) 한국산업정보학회 2005 한국산업정보학회논문지 Vol.10 No.1

휴대통신 서비스품질이 고객만족에 미치는 영향의 매개과정에 관한 분석

이진춘(Lee, Jin-Choon),이석호(Lee, Seok-Ho) 한국의사결정학회 2012 의사결정학연구 Vol.20 No.1

본 연구는 한국이동통신시장에서 이동통신서비스품질이 용이성, 유용성, 전환장벽, 고객만족과 고객충성도에 미치는 매개 영향을 분석하는데 초점을 두었다. 본 연구는 이동통신서비스품질을 외생변인으로 하고, 용이성, 유용성, 전환장벽, 고객만족과 고객충성도를 내생변인으로 하고, 변인 간의 매개영향 관계를 파악하기 위해 구조방정식모형을 이용하였다. 이동통신서비스품질이 서비스관리에서 가장 중요한 요인이므로 그 필요성은 논의할 필요가 없을 것이다. 본 연구에서는 기술수용모형에서 유래한 용이성과 유용성을 도입하여 품질과 고객만족 관계를 연결하여 그 영향관계를 분석하였다. 이를 위해 9개의 가설을 설정하고, 설문을 작성하였으며, 693명의 응답을 대상으로 실증분석을 실시하였다. 검정결과는 다음과 같다. 첫째, 이동통신서비스품질은 전환장벽에 유의한 영향을 미치고 있으며, 통신기술 세대 간에도 유의한 차이가 있었다. 특히 2세대 단말기 이용자들은 강력한 전환장벽이 구축되어 있었으며, 3세대 이용자들 간에는 2세대에 비해 낮은 장벽 구축을 보였다. 둘째, 용이성은 유용성에 유의한 영향을 미치고 있으며, 반면에 유용성은 고객만족에 유의한 영향을 미치지 않고 있었다. 결국, 서비스품질의 용이성, 유용성, 전환장벽, 고객만족에 대한 영향력은 스마트폰이 2세대 및 3세대 폰에 비해 높은 유의성을 보였다. This study focused on analyzing the effects of service quality to ease of use, usefulness, switching barrier and of customer satisfaction and loyalty in the Korean telecommunication market. Also this study provided a momentum to investigate changes induced by introduction of a new product and service, i.e., smart phone. This study formulated a structural equational model, in which service quality was adapted as an exogenous variable and in which ease of use, usefulness, switching barrier were included as intermediate variables, having influences to the endogenous variable such as customer satisfaction and loyalty. First of all, since service quality of telecommunication terminals was looked upon as an essential factor in managing the service operation, it was unnecessary to consider its necessity in the model. In this study, ease of use and usefulness. In this study had adapted ease of use and usefulness of telecommunication terminals to link the service quality with customer satisfaction. As a result, the conclusions are as follows: First, the service quality of telecommunication had significant effects on the switching barrier and showed the prominent difference between the technology generations. The users of generation 2 terminals had shown the highest switching barriers compared with the generation 3 and smart phone users. Also switching barriers played a significant role to link the service quality with customer satisfaction. Secondly, ease of use had a significant effect on the usefulness of customers, by which customers’satisfaction was influenced at low significant level. After all, the effects of service quality on ease of use, usefulness, switching barrier and satisfaction of the users of smart phones had shown at the highest level compared with the users of G2 and G3 users.

성대 마비의 치료

이진춘(Jin-Choon Lee),성의숙(Eui-Suk Sung) 대한신경모니터링학회 2022 Journal of Neuromonitoring & Neurophysiology Vol.2 No.2

Vocal fold paralysis can occur for various reasons, and vocal fold paralysis treatment is important to improve the quality of life and secure airway according to voice. There are several methods of unilateral and bilateral vocal fold paralysis; voice therapy, injection laryngoplasty, laryngeal framework surgery, reinnervation procedures, tracheostomy, arytenoidectomy, cordotomy, cordectomy, and laterofixation of vocal cord. This review paper aims to discuss the treatment principles of unilateral and bilateral vocal fold paralysis.

퍼지추론을 이용한 퍼지스케쥴링 알고리즘 설계

이진춘(Lee, Jin-choon),이홍우(Lee, Hong-woo) 한국경영교육학회 1999 경영교육연구 Vol.18 No.-

교육품질이 학교브랜드 이미지와 학교성과에 미치는 영향 : 포항시 인문계고교를 중심으로

이진춘(Jin-Choon Lee) 한국의사결정학회 2009 의사결정학연구 Vol.17 No.1

본 연구는 교육품질이 학교 브랜드이미지와 학업성취도와 만족도 같은 성과에 어떠한 영향을 미치는가를 실증적으로 분석한 연구이다. 본 연구는 교육품질을 교육서비스품질과 교육환경품질의 2개 요인으로 나누었다. 그리고 학교브랜드 이미지를 도출하여 교육품질과의 관련성을 분석하였고, 같은 맥락에서 학교만족도와 학업성취도와 같은 변수와의 관련성도 분석하였다. 또한 본 연구에서는 앞에서 설명한 요인들인 잠재변인들 간의 관계를 검정하기 위해 구조방정식모형을 채택하였다. 이 방법은 잠재변인들 간의 관계를 분석하는데 대단히 타당하고 합리적이다. 실증조사를 위해, 포항지역 17개 인문계고등학교 413명의 학생을 설문조사하여 응답을 받고, AMOS17을 이용하여 처리하였다. 결론적으로, 교육서비스품질은 학교브랜드 이미지를 고양하는데 상위권 명문고교에서는 더 중요하였고, 반면에 교육환경품질이 하위권 학교에는 더 중요한 것으로 나타났다. 이러한 결과로부터 포항지역의 학교들은 학교브랜드 이미지를 높이는 방안을 수립할 수 있을 것이다. This study tried to survey empirically how education quality influenced to school brand image and its performance, such as, academic achievement and satisfaction. In this study, the quality of education is divided into two sub-factors, in view of the dimension of software and hardware, such as quality of education service and quality of education environment. Then indicators of school brand image had been extracted to test the relationship with the education quality. Also this study extracted the factors of the school satisfaction and the academic performance in the same context. Also, in this study, in order to test the relationship among latent variables such as the factors suggested above. structural equation modelling is adapted. It is very rational and valid to analyze the relationship among latent variables in order to maintain the analysis level of constructed concepts. For empirical survey, 413 responds of 17 schools in Pohang region, were collected and then analyzed by using AMOS, which had a good reputation of usefulness and convenience. Concludingly, the quality of education service was more important and effective factor to the school brand image in the upper group, so called distinguished schools. In the other hands, the quality of education environment was more important than that of education service in the lower group, so called undistinguished schools. From these results, a plan for the high school in Pohang region to establish the school brand image could be formulated.

관능평가를 위한 효율적인 퍼지추론 규칙의 설계

이진춘(Jin-choon Lee) 한국산업정보학회 2001 한국산업정보학회논문지 Vol.6 No.1

중소기업의 품질경영에서 학습촉진요인과 TQM실행 요인의 영향관계 : ISO인증 중소기업을 중심으로

이진춘 ( Jin Choon Lee ),이상진 ( Sang Jin Lee ) 한국중소기업학회 2007 中小企業硏究 Vol.29 No.4