부재의 점진적 소성화를 고려한 비닐하우스의 비선형 해석

조예림 ( Yerim Jo ),서병훈 ( Byunghun Seo ),이상익 ( Sangik Lee ),이종혁 ( Jonghyuk Lee ),김동수 ( Dongsu Kim ),서예진 ( Yejin Seo ),김동우 ( Dongwoo Kim ),아함드파지이드 ( Ahmed Fawzy Eid ),최원 ( Won Choi ) 한국농공학회 2023 한국농공학회 학술대회초록집 Vol.2023 No.0

지구 온난화에 따른 기후 변화로 인해, 매년 자연재해로 인한 농업 시설 구조물의 피해가 발생하고 있다. 이 중 높은 비율을 차지하는 비닐하우스의 피해를 줄이기 위해 내재해형 규격이 배포되었으나, 비닐하우스의 실제적인 거동을 충분히 고려하지 못하여 적절한 안정성과 경제성을 확보하지는 못하였다. 기존 비닐하우스에 대한 구조해석은 탄성 해석 방법을 채택하여 허용 응력 또는 허용 변위가 발생하기 이전까지 구조물의 선형적인 변형을 가정하였다. 그러나 이와 같은 해석은 구조물의 비탄성 성질을 고려하지 않아 실제 구조물의 극한 거동을 반영하고 있다고 보기 어렵다. 반면에, 구조물의 극한 거동을 반영한 연구에서는 부재의 초기 항복 지점부터 소성 힌지가 발생했다고 해석하였으나, 실제로는 초기 항복 지점에서부터 소성 힌지 발생 지점까지 점진적으로 소성화가 진행된다고 보는 것이 타당하다. 본 연구에서는 점진적인 소성화를 고려한 새로운 구조해석 모델을 개발하여 구조물의 극한 해석을 수행하였다. 이때 구조물에 하중을 분할하여 가하였으며, 부재가 항복 상태에 도달한 시점부터 부재의 탄성계수를 점차 감소시키는 방법을 통해 점진적 소성화를 구현하였다. 기존 연구에서 해석 모델로 사용한 플렌지 단면을 가진 프레임 구조물에 대해 구조해석을 수행하여, 하중과 변위 관계를 분석하였으며 선형 해석과 비선형 해석의 차이점 및 탄성계수를 감소시키는 방법 간 차이점을 평가하였다. 비닐하우스 구조물에 대하여 구조해석을 수행하여, 기존 선형 해석 결과 및 하중 재하 실험 결과와 비교하였으며 비선형 해석과의 차이점을 분석하였다.

Development of Korean Music Rehabilitation Program for Persons with Hearing Loss

Yerim Shin,Jeong-Sug Kyong,Sungmin Jo,Jinsook Kim 한국청각언어재활학회 2022 Audiology and Speech Research Vol.18 No.2

Purpose: The ability of music perception should be improved for the hearing impaired by music training. The music training should be systematically conducted from each musical element to overall music listening based on analytic and synthetic approaches. This study aimed to develop the music rehabilitation program (MRP) to improve the music perception of the hearing-impaired. Methods: Fifteen cochlear implant (CI) users (34.5 ± 11.6 years) participated. The MRP consisted the musical elements such as pitch, melody, rhythm and timbre, and musical emotional training considering Korean culture. The MRP was conducted twice per week through self-directed home training for 2 months. The assessment of music perception (AMP) was tested before and after performing the MRP. Results: The results of AMP subtests were significantly different between pre- and post-MRP with 61.1% and 83.8% for the pitch perception test, 72.8% and 87.8% for the timbre perception test with Korean musical instruments, 48.0% and 59.3% with Western musical instruments, and 55.9% and 71.1% in the harmony perception test. However, there was no significant differences in the melody, rhythm and emotional reaction tests. According to the MRP effectiveness questionnaire, 80% of participants have changed their interests after training for listening to music. Conclusion: Although there were differences among elements of music training, the overall music perception ability was improved after conducting MRP (p < 0.001). In conclusion, providing a systematic music training program such as MRP could expand the range of music experience and improve the ability for music listening and for CI users.

Music Perception Abilities of the Hearing Amplification System Users

Jo Sungmin,Yun Jiyeong,Kyong Jeong-Sug,Shin Yerim,Kim Jinsook 대한청각학회 2023 Journal of Audiology & Otology Vol.27 No.2

Background and Objectives: Recently, the improvement of music perception abilities for emotional stability and high quality of life has become important for the hearing loss group. This study aimed to examine and compare the music perception abilities of the normal hearing (NH) and hearing amplification system (HAS) groups to find the needs and methods of music rehabilitation.Subjects and Methods: The data were collected from 15 NH adults (33.1±11.4 years) and 15 HAS adults (38.7±13.4 years), of whom eight wore cochlear implant [CI] systems and seven wore CI and hearing aid systems depending on pitch, melody, rhythm, timbre, emotional reaction, and harmony perception tests. A mismatch negativity test was also conducted, and attitudes toward and satisfaction with listening to music were measured.Results: The correction percentages for the NH and HAS groups were 94.0%±6.1% and 75.3%±23.2% in the pitch test; 94.0%±7.1% and 30.3%±25.9% in the melody test; 99.3%±1.8% and 94.0%± 7.6% in the rhythm test; 78.9%±41.8% and 64.4%±48.9% in the timbre test; 96.7%±10.4% and 81.7%±16.3% in the emotional reaction test; and 85.7%±14.1% and 58.4%±13.9% in the harmony test, respectively, showing statistical significance (<i>p</i><0.05). For the mismatch negativity test, the area of the waveform was smaller in the HAS groups than in the NH groups, with 70 dB of stimulation showing no statistical significance. The response rates for satisfaction with listening to music were 80% and 93.3% for the NH and HAS groups, showing no statistical significance.Conclusions: Although the HAS group showed lower music perception ability than the NH group overall, they showed a strong desire for music listening. Also, the HAS group revealed a higher degree of satisfaction even when listening to unfamiliar music played with unusual instruments. It is suggested that systematic and constant musical rehabilitation based on musical elements and different listening experiences will improve music perception qualities and abilities for HAS users.

Development of Assessment of Music Perception for the Hearing-impaired

Yerim Shin,Jiyeong Yun,Jeong-Sug Kyong,Sungmin Jo,Jinsook Kim 한국청각언어재활학회 2021 Audiology and Speech Research Vol.17 No.4

Purpose: Enhancement of musical perception has a positive impact on the emotional stability, quality of life, and aural rehabilitation in individuals with hearing loss. In Korea, however, there are a few test batteries available for properly assessing their abilities to perceive music. The purpose of this study was to develop a evaluation material for the music perception ability, Assessment of Music Perception (AMP) considering the Korean culture and emotion. Methods:A total of 15 normal hearing adults (33.1 ± 11.4 years) were recruited. They performed the AMP which includes eight sub-tests: pitch, melody, rhythm, timbre, and harmony perception test, emotional reaction test, Music listening Atti-tudes and Satisfaction Questionnaire (MASQ), and Mismatch negativity (MMN). Results:The average percentage of correct answer was 94.0% ± 6.1% in pitch perception test, 94.0% ± 7.1% in melody perception test, 99.3% ± 1.8% in rhythm perception test, 78.9% ± 41.8% in timbre perception test, 96.7% ± 10.4% in emotional reaction test, 85.7% ± 14.1% in harmony perception test. The area of the negative waveform for MMN was 275.27 ± 225.65 μV·ms with the intensity of 70 dBnHL. Conclusion: Considering high scores of a instrument, a developed AMP could be applied for evaluating the music perception ability. However, a little bit of correction for each factor of materials is recommended for comprehensive AMP material. In the future, the music perception ability of the hearing impaired should be evaluated utilizing AMP.

A Study of Music Training for Cochlear Implant Users: Mismatch Negativity and Music Listening Attitude and Satisfaction Questionnaire

Yerim Shin,Chaeyeon Yu,Sungmin Jo,Jeong-Sug Kyong,Jinsook Kim 한국청각언어재활학회 2022 Audiology and Speech Research Vol.18 No.3

Purpose: The music rehabilitation program (MRP) promotes auditory, language, cognitive, and motor development of the brain. The significance of MRP was studied through mismatch negativity (MMN) and Music Listening Attitude and Satisfaction Questionnaire for hearing loss (MASQ_H). Methods: Fifteen adult cochlear implant (CI) users (34.5 years; standard deviation, ± 11.6) participated. MMN was tested before and after MRP training at the stimulus intensity level of 70 and 100 dB hearing loss (HL). In addition, MASQ_H was utilized. Results: For the pre- and post-tests of MMN, the average amplitudes of the waveforms were -2.48 ± 1.95 μV and -6.11 ± 4.21 μV and the areas were 208.16 ± 211.59 μV·ms and 527.87 ± 360.42 μV·ms with the significant difference when the stimulus level was presented at 70 dB HL. For MASQ_H, 90.9% of the participants responded that they felt satisfied with listening to music using CI or hearing aid. When asked about the musical factors that were improved in the music listening, the ‘pitch perception’ and ‘timbre perception’ were responded showing increased satisfaction rates. Conclusion: This study confirmed that MRP improved language processing by facilitating auditory processing, cognitive ability, and neural plasticity of the central auditory system through the increased amplitude and area of MMN after MRP application. Furthermore, providing a systematic music training such as MRP could change the music listening attitudes and satisfaction of the CI users’. The active implementation of music rehabilitation is strongly suggested.

소비 패턴 분석 및 시각적 동기부여를 통한 소비행동 관리 앱

지예림(Yerim Chi),조정인(Jungin Jo),강민정(Minjeong Kang) 한국디자인학회 2018 한국디자인학회 학술발표대회 논문집 Vol.2018 No.11

카카오톡에서의 텍스트 데이터 마이닝 기반의 사용자별 적합 광고 키워드 도출

전예림 ( Yerim Jeon ),소다영 ( Dayeong So ),이지민 ( Jimin Lee ),조은진 ( Eunjin Jo ),문지훈 ( Jihoon Moon ) 한국정보처리학회 2023 한국정보처리학회 학술대회논문집 Vol.30 No.1

결식 아동을 위한 선한 영향력 가게와 아동급식카드 가맹점 앱 개발

조원제(Wonjae Jo),이윤지(Yunji Lee),박의진(Euijin Park),박예림(Yerim Park),태형배(Hyungbae Tae),김상진(Sangjin Kim) 한국정보기술학회 2022 Proceedings of KIIT Conference Vol.2022 No.6

본 논문에서는 결식 아동들을 위해 선한영향력가게와 아동급식카드 가맹점 정보를 알려주는 모바일 어플리케이션을 제안한다. 아동의 위치를 기반으로 가까운 가게 정보를 보여주고, 음식 카테고리별로 가게 정보를 보여줌으로써 아이들에게 직관적인 정보를 제공한다. 소셜로그인 API, 네이버 길찾기 API, 카카오톡 공유 API를 활용하여 기존 서비스와는 달리 사용자 편의를 위한 기능을 제공한다. 또한 커뮤니티 기능을 추가하여 사용자간 소통을 활성화 시킨다. 이러한 기능들은 사용자로 하여금 편리함을 제공할 뿐만 아니라, 나아가 선한영향력 가게의 접근성을 증대하여 많은 아이들이 적극적인 지원을 받을 수 있도록 돕는다. This paper proposes a mobile application system provides the store informations with good influence stores and child meal card stores. It provides intuitive information to children by showing nearby store information based on the child’s location and showing store information by food category. It also provides convenient functions by using Social Login API, Naver Directions API, KakaoTalk Sharing API. Also, the community makes the users activated. This not only provides convenience to users, but also increases accessibility to good influence stores to help many children receive active support.

A Study for Composition and Comparison of the Music Perception Tests for Normal Hearing and Cochlear Implant Users

Eunsung Lee,Yerim Shin,Sungmin Jo,Jinsook Kim 한국청각언어재활학회 2021 Audiology and Speech Research Vol.17 No.3

Purpose: The aim of this study was to compose the test for music perception and analyze the characteristic of cochlear implant users’ music perception. Methods: The test was made up with the pitch, melody, and timbre factors, using three low and high frequencies, six music genres, and four types of musical instruments correspondingly. The tests were conducted to 10 normal-hearing (NH) young adults and 10 young cochlear-implant (CI) users. Results: All the music perception tests showed significant differences between NH and CI group [F(1, 4) = 0.018, p = 0.019]. In the pitch test, CI group showed significantly lower correction rate(51.3%) than NH group (82.7%) did with higher correction rates in low frequencies. In the melody test, CI group showed significantly lower correction rate (29.7%) than NH group (95.8%) did with the highest performance in folk songs (51.7%). In the timbre test, CI group showed significantly reduced performance (22.5%) than NH group (65.8%) did. For both CI and NH groups, the pitched percussion showed the highest scores (45% and 100%) while the woodwind showed the lowest scores (13.3% and 48.3%). Conclusion: Out of three tests, CI group showed better performance in pitch perception than melody and timber perception. CI group showed better performances in low pitch sounds, melodies of familiar genre, and sound of pitched percussion instruments’ timber showing complicated music perception ability. To enhance the music perception ability for CI users by aural rehabilitation, more specified and systematic music perception test material should be developed.

위험물질의 대기확산 안전성 개선방안 연구

김소영(Soyeong Kim),송예림(Yerim Song),조낙원(Nak-won Jo),유병태(Byung-Tae Yoo) 한국가스학회 2021 한국가스학회 학술대회논문집 Vol.2021 No.5