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김진숙,Jeon Seungik,Kim Dokyun,Shin Yerim 대한청각학회 2021 Journal of Audiology & Otology Vol.25 No.1
The scope of teleaudiology has been noted with telehealth due to Coronavirus disease (COVID-19) recently. As the notion has been around us for more than 20 years ever since 1999, it is necessary to perceive the knowledge accurately and prepare for the successful implementation of it. Therefore, the literature review including screening and diagnostic audiometry, cochlear implants and hearing aids, and aural rehabilitation, telecommunications technology regarding several fields of teleaudiology, and considerations for practicing were identified. Although overall internet-based audiological services showed benefits in terms of outcome and accessibility, uncertainties of cost-effectiveness, the optimal level of support, and a need for further studies of many aspects for teleaudiology has arisen. In the view of technology, the store-and-forward (asynchronous/hybrid) and a real-time (synchronous) methods were introduced with one applied and nine registered patents recorded from 2004 to 2020 for the invention of teleaudiology in the United States. Also, 10 checklists were suggested for planning teleaudiology practice from prior experience in hosting the teleaudiology program. Conclusively, it is hoped that this review sheds light on recognizing and improving the existing teleaudiology services and helps overcome the challenges faced in the era of pandemic and untact world to come.
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Song Hyunwook,Jeon Seungik,Shin Yerim,한우재,Kim Saea,Kwak Chanbeom,Lee Eunsung,Kim Jinsook 대한청각학회 2022 Journal of Audiology & Otology Vol.26 No.2
Background and Objectives: Natural and synthetic speech signals effectively stimulate cortical auditory evoked potential (CAEP). This study aimed to select the speech materials for CAEP and identify CAEP waveforms according to gender of speaker (GS) and gender of listener (GL).Subjects and Methods: Two experiments including a comparison of natural and synthetic stimuli and CAEP measurement were performed of 21 young announcers and 40 young adults. Plosive /g/ and /b/ and aspirated plosive /k/ and /p/ were combined to /a/. Six bisyllables–/ga/-/ka/, /ga/-/ba/, /ga/-/pa/, /ka/-/ba/, /ka/-/pa/, and /ba/-/pa/–were formulated as tentative forwarding and backwarding orders. In the natural and synthetic stimulation mode (SM) according to GS, /ka/ and /pa/ were selected through the first experiment used for CAEP measurement.Results: The correction rate differences were largest (74%) at /ka/-/ pa/ and /pa/-/ka/; thus, they were selected as stimulation materals for CAEP measurement. The SM showed shorter latency with P2 and N1-P2 with natural stimulation and N2 with synthetic stimulation. The P2 amplitude was larger with natural stimulation. The SD showed significantly larger amplitude for P2 and N1-P2 with /pa/. The GS showed shorter latency for P2, N2, and N1-P2 and larger amplitude for N2 with female speakers. The GL showed shorter latency for N2 and N1-P2 and larger amplitude for N2 with female listeners.Conclusions: Although several variables showed significance for N2, P2, and N1-P2, P1 and N1 did not show any significance for any variables. N2 and P2 of CAEP seemed affected by endogenous factors.
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전석진(Seokjean Jeon),김정환(Jeonghwan Kim),송승익(Seungik Song) 한국교육학회 2022 敎育學硏究 Vol.60 No.6
본 연구는 기계학습을 통해 우리나라의 대학 분류를 새롭게 시도하는 것을 목적으로 한다. 대학을 분류하는 것은 복잡하고 다양한 대학을 명확하게 이해할 수 있도록 돕는 기본적인 인식틀을 제공한다. 특히 대학을 둘러싼 환경이 빠르게 변화함에 따라 대학의 기능 또한 확대되고 변화하고 있다. 따라서 새로운 분류체계를 통해 대학을 적절히 이해하고, 이를 토대로 학술적·정책적인 접근을 취하는 것이 중요하다. 본 연구에서는 새로운 대학 분류를 위하여 대학알리미에 공시된 자료 중 26개 변수를 활용하여 k-means 군집분석을 수행하였다. 그 결과, 우리나라 205개의 대학을 7개 유형으로 분류할 수 있음을 밝혔으며, 각 유형이 가지는 강점과 특징을 중심으로 유형을 설명하였다. 특히, 유형별로 가장 큰 영향을 미치는 변수와 평균 상위 변수에 대한 분석을 토대로 각 유형에 대한 새로운 명명을 시도하였다. 이 연구의 분석결과를 토대로 대학을 분류하는 기준으로써 기존에 주로 활용되어왔던 교육과 연구 관련 변수뿐만 아니라, 산학협력 변수와 국제화 변수 등이 중요하게 고려되어야 함을 밝혀냈다. 이는 대학의 기능이 다원화되고 있으며 이를 대학 분류가 적절히 반영해야함을 시사한다. 또한 본 연구는 대학분류 연구에서 새롭게 시도되는 기계학습을 통한 분류를 시도했다는 점에서 새로운 관점을 제시했으며 실증적이고 귀납적인 접근의 유용성을 보여주며, 후속 연구의 가능성을 제시하였다. The function of universities is expanding and changing, as the environment around them has been rapidly changing. Therefore, it is important to properly understand universities through a new classification system and to take an appropriate approach to academic research and policymaking based on it. The purpose of this study was to newly classify Korean universities using machine learning. We can use the classification of universities as a basic framework to understand complicated and varied universities more clearly. This study employed a k-means cluster algorithm using 26 variables. Results showed that 205 Korean universities can be classified into seven groups. Each group is described based on an analysis of the variables that had the greatest influence on each type and the mean top variables. This study found that the industry-academic cooperation related variables and internationalization variables are crucial criteria for classifying universities even though they were not considered important in previous research. Also, this study using machine learning, a new attempt at Korean university classification research, suggests that empirical and inductive approaches can be useful.
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The Pathophysiology of Tinnitus: Involvement of the Somatosensory, Brain, and Limbic Systems
Yuri Lee,Taehwa Kim,Kieun Lee,Seungik Jeon,Sungmin Jo,In-Ki Jin 한국청각언어재활학회 2020 Audiology and Speech Research Vol.16 No.1
This study reviewed the pathophysiology of tinnitus. Tinnitus is a symptom that a subject perceives sound regardless of external stimuli. Tinnitus sufferers have reported varying sound types, loudness, and duration of tinnitus. Also, the pathophysiology of tinnitus is also reported to be varied. We searched a web database and found 2,545 articles related to tinnitus. The selection criteria for articles to be reviewed was the year of publication, research category, participant characteristic, publication type, and area of study. Thirty-three studies on the pathophysiology of tinnitus were finally selected and reviewed. Tinnitus pathophysiology was reviewed in relation to the somatosensory, brain, and limbic systems. Fourteen sub-regions were identified to be associated with tinnitus. The data on each sub-region was also reviewed, including its primary role and the tinnitus trigger mechanism. The results of this study can be used as baseline data for studies attempting to understand the mechanism of tinnitus and develop intervention methods.
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