토픽 모델링 기반 비대면 강의평 분석 및 딥러닝 분류 모델 개발

한지영,허고은,Han, Ji Yeong,Heo, Go Eun 한국문헌정보학회 2021 한국문헌정보학회지 Vol.55 No.4

2020년 신종 코로나바이러스 감염증(코로나19)으로 인한 전 세계적인 팬데믹으로 교육 현장에도 큰 변화가 있었다. 대학에서는 보조 교육 수단으로 생각했던 원격수업을 전면 도입하였고 비대면 수업이 일상화되어 교수자와 학생들은 새로운 교육환경에 적응하기 위해 큰 노력을 기울이고 있다. 이러한 변화 속에서 비대면 강의의 질적 향상을 위하여 강의 만족도 영향요인에 관한 연구가 필요하다. 본 연구는 코로나 전과 후로 변화된 대학 강의 만족도 영향요인을 파악하기 위해 빅데이터를 활용한 새로운 방법론을 제시하고자 한다. 토픽 모델링을 활용하여 코로나 전과 후의 강의평을 분석하고 이를 통해 강의 만족도 영향요인을 파악하여 대학교육이 나아가야 할 방향성을 제언하였다. 또한, 딥러닝 언어 모델인 KoBERT를 기반으로 0.84의 F1-score를 보이는 토픽 분류 모델을 구축함으로써 강의의 만족, 불만족 요인을 다각도로 파악할 수 있으며 이를 통해 강의 만족도의 지속적인 질적 향상에 기여할 수 있다. Due to the global pandemic caused by COVID-19 in 2020, there have been major changes in the education sites. Universities have fully introduced remote learning, which was considered as an auxiliary education, and non-face-to-face classes have become commonplace, and professors and students are making great efforts to adapt to the new educational environment. In order to improve the quality of non-face-to-face lectures amid these changes, it is necessary to study the factors affecting lecture satisfaction. Therefore, This paper presents a new methodology using big data to identify the factors affecting university lecture satisfaction changed before and after COVID-19. We use Topic Modeling method to analyze lecture reviews before and after COVID-19, and identify factors affecting lecture satisfaction. Through this, we suggest the direction for university education to move forward. In addition, we can identify the factors of satisfaction and dissatisfaction of lectures from multiangle by establishing a topic classification model with an F1-score of 0.84 based on KoBERT, a deep learning language model, and further contribute to continuous qualitative improvement of lecture satisfaction.

스트렙토조토신 유발 당뇨병성 신증에서 Retinoid의 항 염증 효과

한상엽 ( Han Sang Yeob ),지이화 ( Ji I Hwa ),소경아 ( So Gyeong A ),한금현 ( Han Geum Hyeon ),강영선 ( Kang Yeong Seon ),차태룡 ( Cha Tae Lyong ),김형규 ( Kim Hyeong Gyu ),한지영 ( Han Ji Yeong ) 대한신장학회 2004 Kidney Research and Clinical Practice Vol.23 No.3

목적: 당뇨병성 신증의 원인 기전으로 염증반응이 관계한다고 알려진 이후 염증반응을 억제하고자 하는 시도가 있어왔다. 항염증 작용이 있는 retinoid는 면역성 신질환과 당뇨병에서 세포 외 기질 단백의 축적을 줄인다고 보고되었다. 그러나 retinoid가 당뇨병성 신증의 진행에 어떠한 역할을 하는지에 대해서는 연구가 미미한 상태이다. 이에 retinoid가 당뇨병성 신증의 진행과정에 관여하는 염증 작용을 차단할 수 있는지 규명하고자 하였다. 방법: Streptozotocin (STZ)을 쥐에 주사하여 당뇨를 유발시켜 염증 반응을 활성화한 뒤 retinoid를 투여하여 monocyte chemoattractant peptide-1 (MCP-1) 발현을 측정하여 항염증 효과를 평가하였다. 결과: 당뇨가 유발된 쥐들에서 군간 혈당 차이는 없었다. 당뇨 발생 초기 (2일)에 차이가 없던 24시간 요 단백양이 4주 후에는 증가되었고, 당뇨군 내에서는 retinoid를 투여한 군에서 투여하지 않은 군에 비해 단백뇨 양이 감소되는 경향을 보였다. 소변에서 발현된 MCP-1 단백양은 비당뇨군에 비해 당뇨군에서 초기부터 증가하는 경향을 보이다 4주 후에는 의미있게 증가하였다. 당뇨군에서 증가한 소변내 MCP-1 단백 발현이 retinoid를 투여한 경우 약 제를 투여하지 않은 군에 비해 감소하는 경향을 보였다. 신장 피질에서 추출한 RNA에서 MCP-1의 발현을 측정한 결과 비당뇨군에 비해 당뇨군에서 의미있게 증가되었으나 retinoid 투여효과는 관찰되지 않았다. MCP-1에 대한 면역 조직 화학 염색 결과 2일째부터 MCP-1 발현은 당뇨군에서 대조군에 비해 증가되어, 4주 후에는 의미 있게 차이가 났으며, retinoid를 투여한 경우 MCP-1의 발현은 뚜렷이 감소되었다. 결론: STZ 유발 당뇨쥐에서 MCP-1 단백 발현이 증가되는 것을 인하였고, 증가된 MCP-1 발현이 retinoid를 투여하는 경우 감소하는 것을 확인하였다. 이를 통해 당뇨병성 신증의 진행과정 중 retinoid가 염증반응을 차단할 수 있을 것으로 예상하였다. Background : An inflammatory mechanism has been suggested to contribute to the progression of diabetic nephropathy. Although retinoid, a known anti-inflammatory agent. has been reported to be beneficial in some experimental renal diseases, it has not been shown whether it prevents disease progression in diabetic nephrogathy. Therefore, we investigated whether all-trans retinoic acid inhibits inflammatory changes and improves renal function during the early stages of diabetic nephropathy in streptozotocin-induced diabetic rats. Methods : We evaluated anti-inflammatory effect of retinoid on streptozotocin-induced diabetic nephropathy. Anti-inflammatory effect was determined by the expression of monocyte chemoattractant peptide-1 (MCP-1). Results : Urinary protein excretion was significantly higher in diabetic rats at four weeks after the induction of diabetes mellitus compared with controls, and proteinuria in the group with retinoic acid treatment was decreased (1.25±0.69 vs. 0.78k0.72 mg/mg Cr, p=0.056). Urinary excretion of MCP-1 was rapidly increased at two days after induction of diabetes mellitus in diabetic rats, and further increased until four weeks of age compared with control rats. Retinoic acid treatment suppressed to 30% reduction of the urinary level of MCP-1 compared with vehicle treated diabetic rats (l19.3 ± 74.2 vs. 78.1±62.7 pg/mg Cr, p=0.078). Immunohistochemistry revealed a significant increase in staining for MCP -1 protein in the diabetic kidney, and retinoic acid treatment significantly suppressed intrarenal MCP-1 protein synthesis. Conclusion : Retinoic acid suppressed proteinuria and inflammatory changes in diabetic rats. These results suggest that retinoic acid may have an anti inflammatory effect in diabetic nephropathy. (Korean J Nephrol 2004;23(3):377-384)

일반연제 발표 : 당뇨병성 신증 진행 방지를 위한 Retinoid 투여 효과에 관한 연구

한상엽 ( Han Sang Yeob ),지이화 ( Ji I Hwa ),소경아 ( So Gyeong A ),한금현 ( Han Geum Hyeon ),강영선 ( Kang Yeong Seon ),조상경 ( Jo Sang Gyeong ),차대룡 ( Cha Dae Lyong ),조원용 ( Jo Won Yong ),김형규 ( Kim Hyeong Gyu ),한지영 ( 대한신장학회 2003 춘계학술대회 초록집 Vol.22 No.1

호스피스 교육이 간호사의 죽음과 임종에 대한 두려움과 대응에 미치는 영향

정복례,한지영,김경덕,Jeong, Bok-Rye,Han, Ji-Yeong,Kim, Gyeong-Deok 한국호스피스협회 2005 호스피스 학술지 Vol.5 No.1

Purpose: The purpose of this study was to identify the effects of education of hospice for nurses on concern and coping about death and dying. Methods: The subjects of this study were 33 Korean nurses who participated in the education of hospice which consisted of lectures and practices for 5 months. Data were collected using questionnaire of concern and coping about Death and Dying. Data were analyzed with the mean, SDs and Wilcoxen test. Results: The mean score of concern about death and dying was 7.03. The highest items of concern about death and dying were 'thoughts of physical pain and being, 'thoughts of suffocating and choking, 'fear of darkness', The lowest items of concern about death and dying were. 'thoughts of burglars invading my possessions', 'rejection by God', thoughts of no one attending funeral', 'thoughts of no one paying respect or tribute', The mean score of coping about death and dying was 11.37. The highest items of coping about death and dying were 'call family member(s) into room and ask them ti sit close by, reminisce on happy events of the past, tell myself that there is nothing to be afraid of, look at family picture albums'. The lowest items of coping about death and dying were 'stay up stay up late till ready to fall asleep', 'look at family heirlooms', 'phone a prayer line', 'ask for a snack or something to drink'. In concern and coping about death and dying, significant differences were not found between pre and post test. But there was a tendency to decrease concern and increase coping about death and dying after education of hospice. Conclusion: According to these results, it is needed for nurses not only to do research for concern and coping about death and dying but also to develop an education program.

A Study on the Selection of the Main Factors of Radiation Risk Index Model for assessing risk in Nondestructive Test workplace

Da Yeong Gwon(권다영),Ji young Han(한지영),Yu-Jung Bae(배유정),Byeong-soo Kim(김병수),Yongmin Kim(김용민) 한국방사선학회 2018 한국방사선학회 논문지 Vol.12 No.4

Risk of radiation worker and radiation workplace are being mainly assessed by exposure dose. But, the radiation used in radiation workplace and the work environment are different. Because the nondestructive work environment varies depending on the work subject, the existence and nonexistence of shielding board, and so on. So, we need to consider the various factors in effective radiation protection aspect. We conducted a survey of radiation workers with over two years` experience in NDT workplace and heared the thoughts of experts. As a result, radiation source, exposure dose, current status of workplace management, workers with personel dosimetry problem and status of periodic regulatory inspection were chosen as main factors of radiation risk index model. Also, we primarily set weighting factors in order of importance based on questionnaires. Finally, we determined weighting factor for details of main factors through the professional advice. Therefore, we will be able to develop the radiation risk index model for assessing the risk of nondestructive test workplace based on main factors that are selected through this study. 방사선작업종사자 및 방사선작업장의 위험성은 주로 피폭선량 값으로 평가되고 있다. 하지만, 방사선작업장은 사용하는 방사선 및 작업환경이 상이하다. 특히, 방사선투과검사작업장은 작업대상물, 차폐체 사용 가능 유무 등에 따라 작업환경이 다양하다. 따라서 효율적인 방사선 방호를 위해서는 여러 가지 인자들을 검토하는 것이 필요하다. 이에 전문가 및 조장 방사선작업종사자들 대상으로 설문조사를 수행하였으며, 그 결과, 방사선원, 방사선피폭선량, 작업장관리현황, 판독특이자, 정기검사현황이 주요인자로 선정되었다. 또한, 설문조사 중요도를 바탕으로 1차 가중치(안)을 설정한 후 2차적으로 전문가 자문을 통해 인자 내 세부 항목별 가중치를 선정하였다. 따라서 본 연구를 통해 선정된 주요인자를 바탕으로 하여 방사선투과검사작 업장 위해도 지수 모델 개발이 가능할 것으로 판단된다.

일반연제 발표 : Streptozotocin으로 유발한 당뇨병성 백서에서 신조직내 MMP2/TIMP2의 발현에 대한 연구

강영선 ( Kang Yeong Seon ),지이화 ( Ji I Hwa ),한금현 ( Han Geum Hyeon ),성수아 ( Seong Su A ),한상엽 ( Han Sang Yeob ),조상경 ( Jo Sang Gyeong ),차대룡 ( Cha Dae Lyong ),조원용 ( Jo Won Yong ),김형규 ( Kim Hyeong Gyu ),한지영 ( H 대한신장학회 2003 춘계학술대회 초록집 Vol.22 No.1

방사선투과검사작업장 위험성 평가를 위한 방사선 위해도 지수 모델 주요인자 선정에 관한 연구

권다영 ( Da Yeong Gwon ),한지영 ( Ji Young Han ),배유정 ( Yu-jung Bae ),김병수 ( Byeong-soo Kim ),김용민 ( Yongmin Kim ) 한국방사선학회 2018 한국방사선학회 논문지 Vol.12 No.4

방사선작업종사자 및 방사선작업장의 위험성은 주로 피폭선량 값으로 평가되고 있다. 하지만, 방사선작업장은 사용하는 방사선 및 작업환경이 상이하다. 특히, 방사선투과검사작업장은 작업대상물, 차폐체 사용 가능 유무 등에 따라 작업환경이 다양하다. 따라서 효율적인 방사선 방호를 위해서는 여러 가지 인자들을 검토하는 것이 필요하다. 이에 전문가 및 조장 방사선작업종사자들 대상으로 설문조사를 수행하였으며, 그 결과, 방사선원, 방사선피폭선량, 작업장관리현황, 판독특이자, 정기검사현황이 주요인자로 선정되었다. 또한, 설문조사 중요도를 바탕으로 1차 가중치(안)을 설정한 후 2차적으로 전문가 자문을 통해 인자 내 세부 항목별 가중치를 선정하였다. 따라서 본 연구를 통해 선정된 주요인자를 바탕으로 하여 방사선투과검사작업장 위해도 지수 모델 개발이 가능할 것으로 판단된다. Risk of radiation worker and radiation workplace are being mainly assessed by exposure dose. But, the radiation used in radiation workplace and the work environment are different. Because the nondestructive work environment varies depending on the work subject, the existence and nonexistence of shielding board, and so on. So, we need to consider the various factors in effective radiation protection aspect. We conducted a survey of radiation workers with over two years` experience in NDT workplace and heared the thoughts of experts. As a result, radiation source, exposure dose, current status of workplace management, workers with personel dosimetry problem and status of periodic regulatory inspection were chosen as main factors of radiation risk index model. Also, we primarily set weighting factors in order of importance based on questionnaires. Finally, we determined weighting factor for details of main factors through the professional advice. Therefore, we will be able to develop the radiation risk index model for assessing the risk of nondestructive test workplace based on main factors that are selected through this study.

BERTopic을 활용한 불면증 소셜 데이터 토픽 모델링 및 불면증 경향 문헌 딥러닝 자동분류 모델 구축

고영수,이수빈,차민정,김성덕,이주희,한지영,송민,Ko, Young Soo,Lee, Soobin,Cha, Minjung,Kim, Seongdeok,Lee, Juhee,Han, Ji Yeong,Song, Min 한국정보관리학회 2022 정보관리학회지 Vol.39 No.2

Insomnia is a chronic disease in modern society, with the number of new patients increasing by more than 20% in the last 5 years. Insomnia is a serious disease that requires diagnosis and treatment because the individual and social problems that occur when there is a lack of sleep are serious and the triggers of insomnia are complex. This study collected 5,699 data from 'insomnia', a community on 'Reddit', a social media that freely expresses opinions. Based on the International Classification of Sleep Disorders ICSD-3 standard and the guidelines with the help of experts, the insomnia corpus was constructed by tagging them as insomnia tendency documents and non-insomnia tendency documents. Five deep learning language models (BERT, RoBERTa, ALBERT, ELECTRA, XLNet) were trained using the constructed insomnia corpus as training data. As a result of performance evaluation, RoBERTa showed the highest performance with an accuracy of 81.33%. In order to in-depth analysis of insomnia social data, topic modeling was performed using the newly emerged BERTopic method by supplementing the weaknesses of LDA, which is widely used in the past. As a result of the analysis, 8 subject groups ('Negative emotions', 'Advice and help and gratitude', 'Insomnia-related diseases', 'Sleeping pills', 'Exercise and eating habits', 'Physical characteristics', 'Activity characteristics', 'Environmental characteristics') could be confirmed. Users expressed negative emotions and sought help and advice from the Reddit insomnia community. In addition, they mentioned diseases related to insomnia, shared discourse on the use of sleeping pills, and expressed interest in exercise and eating habits. As insomnia-related characteristics, we found physical characteristics such as breathing, pregnancy, and heart, active characteristics such as zombies, hypnic jerk, and groggy, and environmental characteristics such as sunlight, blankets, temperature, and naps.

과립막세포종 5예

정해련 ( Jeong Hae Lyeon ),고승권 ( Go Seung Gwon ),한지영 ( Han Ji Yeong ),송은섭 ( Song Eun Seob ),박지현 ( Park Ji Hyeon ),이건영 ( Lee Geon Yeong ),황성욱 ( Hwang Seong Ug ),임문환 ( Im Mun Hwan ),이병익 ( Lee Byeong Ig ),이 대한산부인과학회 2004 Obstetrics & Gynecology Science Vol.47 No.1

Sex cord stromal tumors (GCT) of the ovary compose just 5% of ovarian tumors. Most of them are granulosa cell tumors (GCT). There are two types of tumors, juvenile (JGCT) and adult type (AGCT), which have different clinical and histopathological features.

포스터 발표 : IgA신증에서 신세뇨관의 조직학적 변화와 N-acetyl-β-D-glucosaminidase의 관계에 대한 분석

김경아 ( Kim Gyeong A ),임희정 ( Im Hui Jeong ),김덕영 ( Kim Deog Yeong ),서주현 ( Seo Ju Hyeon ),송준호 ( Song Jun Ho ),이승우 ( Lee Seung U ),한지영 ( Han Ji Yeong ),김문재 ( Kim Mun Jae ) 대한신장학회 2003 춘계학술대회 초록집 Vol.22 No.1