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Jiyoung Mun,Yu Jin Kim,Kyung Jin Lee,Eun Mi Jung,Sun-Wha Kim,Seung-Goo Lee,Ohsuk Kwon,Doo-Byoung Oh 한국당과학회 2009 한국당과학회 학술대회 Vol.2009 No.1
The (1,6)-fucosylation of core N-glycan (core fucose) has been known to play crucial roles in various pathophysiological events such as oncogenesis and metastasis. Therefore, a fluorescent probe recognizing core fucose will be a powerful tool for elucidating its functional role and further diagnosing cancer. The fleA gene, which has been known to code Aspergillus oryzae lectin (AOL), was cloned from A. oryzae RIB40. We fused it with the either citrine or cerulean gene (improved variants of yellow or cyan fluorescent protein) to generate two expression vectors. The resulting fusion gene products (FleA-citrin & FleA–cerulean) were successfully expressed in Escherichia coli and purified homogeneously using two step affinity purification method. The fluorescent FleA fusion proteins were shown to detect core fuose in glycoproteins on the surface of cancer cells. The reduction of core fucose amount induced by the transfection of (1,6)-fucosyltransferase gene, Fut8, siRNA was also successfully detected by the FleA fusion proteins. These results show that our FleA-fluorescent fusion proteins would be employedas a valuable fluorescent probe for detecting core fucose.
대학생 학업 중단 예방을 위한 기계학습 기반 모형 탐색
문지영(Jiyoung Mun),조명근(Meounggun Jo) 한국교육평가학회 2023 교육평가연구 Vol.36 No.2
본 논문에서는 학생들의 학업 중단 예방을 위해 학생의 특징과 중도 탈락 여부의 예측 성능 지수가 좋은 모델을 탐색하였다. 2018년~2022년 동안 충남지역 A 대학교 학적 데이터 30,118건을 6가지 분류 모형에 적용한 결과, 정확률은 XGBoost 알고리즘이 96.9%, 재현율은 서포트벡트머신이 94.4% 성능을 나타냈다. 전반적으로 성능 지표가 좋은 XGboost가 최종모형으로 선택되었으며 중도 탈락 영향 요소 중요도는 학적 변동 총 횟수, 이수 학기 수, 휴학 횟수, 총 평점 평균, 학년, 학사경고 횟수 순으로 높게 나타났다. 마지막으로 기계학습 모형 결과를 기반으로 일관적인 중도 탈락 예측 과정을 통해 학교 이탈 확률이 높은 학생들의 대응관리 장·단기 전략을 제시하였다. In this paper, we explored models with good performance indexes for predicting student characteristics and dropout status to prevent students from dropping out. As a result of applying 6 classification models to 30,118 academic data of University A from 2018 to 2022, the accuracy rate of XGboost algorithm was 96.9% and the recall rate was 94.4%. XGboost was selected as the final model and the importance of the dropout influencing factors was high in the following order: total number of grade changes, number of semesters completed, number of leaves of absence, grade point average, grade level, and number of academic warnings. Finally, we proposed long-term and short-term management strategies for students with a high probability of dropping out of school through a consistent dropout prediction process.
의미 단위화, chunking와 소리 내어읽기, reading aloud에 의한 학습이 아랍어 어휘 및 문법 능력에 미치는 영향
문지영 ( Jiyoung Mun ) 한국외국어대학교 중동연구소 2015 중동연구 Vol.34 No.2
The purpose of this study is to examine the effects of chunking and reading aloud as Arabic teaching method which can improve Arabic grammatical and lexical ability of AFL learners. An experiment has been conducted on two groups of Hankuk University of Foreign Studies students for 4 weeks, 20 hours in total. The lesson for each group was composed of two parts. In the first part of the lesson, both groups learned Arabic grammar with different treatments. Comparative group learned Arabic grammar only with the grammatical explanation and experimental group learned chunked sentences of meaningful units or syntax structure units while reading those aloud. In the second part of the lesson, comparative group solved problems related to the contents taught in the first session. However, experimental group learned Arabic verbs with Arabic collocation dictionary. In common with the first session, students in the experimental group read the example sentences aloud again. The result of the study is as follows. First, based on the pre- and post-test scores, students of experimental group showed considerable improvement while those in comparative group showed no meaningful difference. Second, experimental group students, who read chunked sentences aloud during the experiment, showed more interest in studying Arabic language in general and active attitude in learning Arabic vocabulary. Also, it is observed that the way experimental group was taught helps students to better understand sentences while reading and to learn both pronunciation and intonation while listening and speaking. Lastly, learning with collocation improves Arabic reading skills of students since it enables students to grasp the real meaning of the vocabulary in given context.
TV광고를 활용한 아랍어 수업이 아랍어 듣기 능력과 정의적 영역에 미치는 영향
문지영(Mun JiYoung) 한국중동학회 2016 韓國 中東 學會 論叢 Vol.37 No.1
The purpose of this study is to examine how using TV Arabic advertisement activities influence the listening competence, the learners' interests, and confidence in learning Arabic language. The main goal of learning Arabic language is to build up the ability to appropriately communicate with native Arabic speakers in a real-life situations. The results of this study are as follows. First, the instruction through TV Arabic advertisements is not a helpful way to improve students' listening competence. Second, the instruction through TV Arabic advertisements can increase students' interests and confidence in learning Arabic language. In conclusion, I hope to develop various media and methods of teaching for elementary level of University Arabic language learners and learning Arabic language by using advertisements to facilitate Arabic education more effectively.
어휘 의미 강화 전략에 관한 아랍어 학습자들의 인식 및 학습 지도 방안 개발
문지영(Mun JiYoung) 한국아랍어아랍문학회 2016 아랍어와 아랍문학 Vol.20 No.1
The purpose of this study is to investigate Arabic learners’ use and perception of vocabulary meaning consolidation strategies and develop instructional techniques. For this study, the survey was conducted with twenty five students who are all freshmen second semester. Twenty six vocabulary meaning consolidation strategies for helping Arabic learners to remember Arabic vocabulary were listed on the questionnaire. And the survey data were analyzed using Pearson correlation coefficient. The main results obtained from this study are as follows. The students used ten vocabulary meaning consolidation strategies for remembering Arabic words: how to learn Arabic vocabulary through the interaction with native speakers, how to connect Arabic words with their synonyms and antonyms, other related words or idioms, how to use word classification, how to analyze the word structure, how to read aloud Arabic words, or write Arabic words repeatedly, and how to take a note for remembering the Arabic words, how to connect Arabic words with words students already knew.
Mun Ye Sol,Park Hee Kyung,Kim Jihee,Yeom Jiyoung,김건하,Chun Min Young,Lee Hye Ah,윤수진,Park Kyung Won,Kim Eun-Joo,Yoon Bora,장재원,홍진용,최성혜,정지향 대한치매학회 2022 Dementia and Neurocognitive Disorders Vol.21 No.1
Background and Purpose: In this study we aimed to find the association between neuropsychological performance and body mass index (BMI) in patients with mild cognitive impairment (MCI). In addition, we investigated the effects of the apolipoprotein E (APOE) genotype in the relationship between the BMI and cognition in MCI. Methods: We enrolled a cohort of 3,038 subjects with MCI aged 65–90 from the Clinical Research Center for Dementia of South Korea and a dementia cohort of the Ewha Womans University Mokdong Hospital. MCI patients were classified into three subgroups according to the Asian standard of BMI. We compared cognitive performances between groups by one-way analysis of variance. To investigate the effects of the APOE genotype, we used multivariate linear regression models after adjusting for possible confounders. Results: Even though normal BMI groups were younger, had more females, and had less comorbidities, the higher BMI groups had better cognitive functions. Among subjects with APOE ε4 carriers, there was a positive relationship between the BMI and the memory task alone. Conclusions: Our findings suggested that higher BMI in patients with MCI were associated with better cognitive performance. The effects of the APOE ε4 genotype in the associations between BMI and cognition were distinguishing. Therefore, according to physical status, APOE ε4 genotype-specific strategies in the assessments and treatments may be necessary in elderly patients with MCI.