Exploring Oral Corrective Feedback on Korean EFL University Students’ Writing: A Case Study of Two Native English-Speaking Instructors

전혜민 신영어영문학회 2025 신영어영문학 Vol.90 No.-

This study explored the oral corrective feedback provided by two foreign instructors on Korean EFL university students’ writing, with a focus on the most frequently used types of feedback. The study involved observing and recording two instructors’ basic English writing classes, transcribing segments where oral corrective feedback was provided, and analyzing the feedback using Lyster and Ranta’s (1997) categorization. Through personal interviews with the instructors, the study examined their pedagogical beliefs, writing experiences, and attitudes toward feedback. The results indicated that both instructors primarily used explicit correction, followed by metalinguistic feedback. Differences emerged in their feedback intensity, with one instructor emphasizing form and accuracy, while the other prioritized content and flow. The study calls for further research on oral corrective feedback in intermediate and advanced writing contexts to enhance self-evaluation tools for writing instructors.

특발 망막앞막에서 막제거술 과정 중 발생하는 중심와 견인

전혜민,채수혜,방찬우,이민수,윤희성 대한안과학회 2018 대한안과학회지 Vol.59 No.8

Purpose: To determine influences of intraoperative foveal traction during membrane peeling in idiopathic epiretinal membrane (ERM) surgery. Methods: This retrospective observational study included 46 eyes of 46 patients with idiopathic ERM who underwent pars plana vitrectomy with ERM and internal limiting membrane peeling from February 2015 to September 2015. The presence of intraoperative foveal traction during membrane peeling was reviewed using video records. The main outcome measures were best-corrected visual acuity (BCVA), central foveal thickness (CFT), foveal contour, and photoreceptor inner segment/outer segment junction disruption using optical coherence tomography at baseline and at 1, 3, 6, and 12 months after surgery. Results: Group 1 (ERM with intraoperative foveal traction) included 22 eyes, and group 2 (ERM without intraoperative foveal traction) included 24 eyes. Preoperatively, convex pattern ERM was observed more often in group 1. Group 1 had a significantly thicker CFT and a lower BCVA compared to group 2 at baseline and during the first 6 months, but the final postoperative BCVA and CFT were not significantly different between the groups at 12 months. Among 22 eyes, 12 eyes (54.5%) were restored to flat or concave ERM patterns at an average of 5.4 months after surgery in group 1, and 18 out of 24 eyes (75%) recovered at 2.4 months (p < 0.01) in group 2. Conclusions: Preoperative thick CFT and convex pattern ERM indicated a high possibility of intraoperative foveal traction in idiopathic ERM surgery. There were no differences in long-term BCVA and restoration of foveal configuration according to foveal traction during membrane peeling. 목적: 특발 망막앞막 환자에서 막제거술을 시행하는 과정에서 발생한 중심와 견인이 수술 결과에 미치는 영향에 대해 분석해 보고자 하였다. 대상과 방법: 2015년 2월부터 9월까지 본원에서 특발 망막앞막으로 진단받고 유리체절제술 및 막제거술을 시행받은 환자 46명 46안을 대상으로 후향적으로 분석하였다. 수술영상을 판독하여 막제거술 과정에서 중심와에 견인이 발생하였는지를 확인하였고, 술 전, 술 후 1개월, 3개월, 6개월, 12개월에 최대교정시력 및 빛간섭단층촬영상에서 중심망막두께, 중심오목형태, 시세포 내절/외절 상태의 변화를 조사하였다. 결과: 술 중 중심와 견인이 발생한 22안은 견인이 발생하지 않은 24안에 비해 술 전 볼록형 형태가 많았고 중심망막두께가 두꺼웠으며 술 전 시력이 낮았다. 술 후 6개월까지 견인이 발생했던 군에서 시력이 낮고 중심망막두께가 두꺼웠으나 12개월에는 두 군의 차이가 없었다. 술 후 황반의 형태가 편평형 또는 오목형으로 회복되는 기간은 견인이 발생한 군에서 5.4개월, 견인이 발생하지 않은 군에서 2.4개월이었다(p<0.01). 결론: 특발 망막앞막 환자에서 수술 전 중심망막두께가 두껍고 볼록형 형태일수록 막제거술 과정 중 중심와 견인이 발생할 가능성이 높으며, 막제거술 과정 중 중심와 견인의 발생 유무에 따른 장기적 시력 및 해부학적 결과는 차이가 없었다.

어순 교체에 따른 한국어 피동문 실시간 처리 연구 - 일본인 학습자를 대상으로 -

전혜민,고기영 국제한국언어문화학회 2022 한국언어문화학 Vol.19 No.3

Expatriate Teacher Identity of Five Professors at a Christian Graduate School in the Philippines

전혜민,최호성 21세기영어영문학회 2022 영어영문학21 Vol.35 No.2

This study explored the identity of five expatriate professors at a Christian graduate school in the Philippines and the factors that influenced their teacher identity formation. The participants’ narratives of personal, professional, and cross-cultural experiences were analyzed based on Poole’s (2020) international school teacher identity framework. Data were collected over a period of nine months through semi-structured interviews and repeated follow-up Zoom meetings and email correspondence. The findings demonstrated that the participants enjoyed being educators, a profession in which they identified themselves as facilitators who guided the academic journeys of students, contributors who created positive learning atmospheres and developed leaders, ethical role models, missionaries, and learners of different cultures and areas of study. Their childhood experiences in Christian schools, significant figures, intercultural experiences, and Christian faith were factors that affected how they shaped their teacher identities.

Effects of Interventions to Increase Dorsiflexion on Muscle Strength and Dynamic Balance

전혜민,김도은,박지원 대한물리치료학회 2025 대한물리치료학회지 Vol.37 No.1

Purpose: This study examined the effects of interventions that increase ankle dorsiflexion on muscle contraction and dynamic balance. Methods: Forty-five healthy adults (16 males, 29 females) were assigned randomly to three groups who performed foam roller massage (FM), static stretching (SS), or post-isometric relaxation (PIR). Before the intervention, the angle of ankle dorsiflexion in the lying position, weight-bearing lunge test (WBLT), and isometric muscle contraction force at neutral ankle position were measured using a push-pull dynamometer. The Star Excursion Balance test (SEBT) was performed as a Starmat to evaluate the dynamic balance. The above examinations were re-measured after the intervention. Repeated one-way ANOVA was used for statistical analysis, and the statistical significance was set at α=0.05. Results: The general characteristics of the subjects (age, leg length) were similar in the three groups except for height. The results revealed significant differences in all measuring examinations among the FM, SS, and PIR groups (p<0.05). The post-hoc test showed that PIR was the most effective at a range of motion and WBLT. Stretching was the most effective method in the SEBT and strength. Conclusion: Interventions that increase ankle dorsiflexion may positively affect dynamic balance, muscle contraction, and range of motion.

정적 특징 기반 랜섬웨어 탐지를 위한 특징 중요도 알고리즘 비교 및 특징 선정 연구

전혜민,최두섭,임을규 한국정보처리학회 2025 정보처리학회 논문지(KTSDE) Vol.14 No.8

본 논문에서는 랜섬웨어 PE 파일 헤더 정보, 섹션 크기, 가상 메모리 크기 등 54개의 정적 특징을 추출하여 Gain Ratio, Information Gain,Gini Importance, Mutual Information 네 가지 알고리즘으로 중요도를 평가하고, 각 알고리즘 상위 K값에 해당하는 특징 집합을 구성해 Random Forest, Decision Tree, Support Vector Machine, Multi-Layer Perceptron 네 가지 분류 모델을 학습⋅검증하였다. 실험 결과, RF 모델이 Gain Ratio 기반 K=0.01에서 41개 특징으로 99.33%의 최고 정확도를 달성했으며, DT(98.67%), SVM(96.67%), MLP(98.75%) 등 모든 모델이 96% 이상의성능을 보였다. 이를 통해 특징 수 조정으로 학습 자원을 적게 사용하면서 높은 탐지 정확도를 확인하였다. In this paper, we extract 54 static features from ransomware PE files—including header metadata, section sizes, and virtual memorysizes—and evaluate their importance using four algorithms: Gain Ratio, Information Gain, Gini Importance, and Mutual Information. Foreach algorithm, we select the top-K features to form a reduced feature set, which is then used to train and validate four classificationmodels: Random Forest, Decision Tree, Support Vector Machine, and Multi-Layer Perceptron. Experimental results show that the RandomForest model, using 41 features selected by a Gain Ratio threshold of K = 0.01, achieves the highest accuracy of 99.33%. The DecisionTree, SVM, and MLP models also demonstrate strong performance with accuracies of 98.67%, 96.67%, and 98.75%, respectively. Thesefindings confirm that careful feature selection can substantially reduce computational costs while maintaining high detection accuracy

유아교사의 놀이성과 창의적 인성이 놀이교수효능감에 미치는 영향

전혜민,김효진 한국유아교육학회 2022 유아교육연구 Vol.42 No.4

The purpose of this study is to investigate the effects of early childhood teacher’s playfulness and creative personality on their play teaching efficacy. The subjects of this study are 247 early childhood teachers in charge of classes at early childhood education institutions located in Jeollanam-do, Jeollabuk-do, and Gwangju Metropolitan City. The results are as follows. There was a positive correlation among play teaching efficacy, playfulness, and creative personality of early childhood teachers. The higher the playfulness and creative personality of early childhood teachers, the higher was the play teaching efficacy. The creative personality of early childhood teachers was an important variable that could be explained by the play teaching efficacy. It was found that most of the teachers' playfulness influenced the play teaching efficacy except for the sub-factor of impulsiveness. These results indicated that creative personality and playfulness have a positive effect on the play teaching efficacy. Consequently, this study shows that the playfulness and creative personality of early childhood teachers are related to and have a significant effect on the play teaching efficacy of early childhood teachers. These results suggest that the education for teachers needs to be re-examined in regard to the existing perspective on play teaching efficacy in the play-centered curriculum. Training should be provided to teachers who enjoy the play and have creative attitudes in order to become 'teachers who play together'. 본 연구의 목적은 유아교사의 놀이교수효능감에 영향을 미치는 변인으로 유아교사의 놀이성과 창의적 인성에 주목함으로써 유아교사의 놀이성과 창의적 인성을 재조명하고 놀이교수효능감을 증진하기 위한 방안을 마련함에 있어 기초자료를 제공하는 것이다. 이를 위해, 전라남·북도, 광주광역시의 유아교사 247명을 대상으로 설문조사를 실시하고, 놀이성, 창의적 인성, 놀이교수효능감 간의 관계 및 영향력을 살펴보았다. 그 결과, 첫째, 유아교사의 놀이교수효능감과놀이성 및 창의적 인성 간에 정적상관을 보였다. 둘째, 유아교사의 창의적 인성은 놀이교수효능감을 설명할 수 있는 주요 변인이었으며, 유아교사의 놀이성은 하위요인인 즉흥성을 제외하고 모두 놀이교수효능감에 유의한 영향을 미쳤다. 이상의 연구결과를 통해 유아교사의 놀이성과 창의적 인성은 유아교사의 놀이교수효능감과 높은 관련 있으며, 긍정적인 영향을 미친다는것을 의미한다. 따라서 본 연구는 기존 놀이교수효능감에 대한 관점을 놀이중심교육과정에서재조명하고, ‘함께 놀이하는 교사’가 되기 위해 놀이를 즐기며 창의적인 태도를 지닌 교사를 양성하기 위한 교사교육이 필요함을 시사한다.

대사증후군 요인과 갑상선 결절의 연관성에 관한 단면 연구

전혜민,지태정,김현진 한국방사선학회 2025 한국방사선학회 논문지 Vol.19 No.7

본 연구는 건강검진 수검자 216명을 대상으로 연령, 성별, 체질량지수(BMI), 고혈압, 당뇨, 고지혈증 등 대사증후군 요인이 갑상선 결절의 존재, 개수, 및 악성도(K-TIRADS)에 미치는 영향을 분석하였다. 갑상선 초음파로 결절 특성을 평가하고, 혈압·혈당·지질을 기준으로 대사증후군을 정의하였다. 분석결과, 연령 증가에 다라 결절 크기(F=5.698, p<0.001)와 개수(F=7.863, p<0.001)가 유의하게 증가하였으며, 여성과 고령이 결절 개수의 주요 예측인자로 확인되었다. BMI는 결절의 존재(χ²=8.803, p=0.012)와 다발성과 연관되었으나 악성도와의 직접적 관련은 없었다. 다변량 로지스틱 회귀분석에서 결절의 악성도는 연령(OR=1.049, p=0.001), 고혈압(OR=8.384, p=0.005), 고지혈증(OR=8.000, p<0.001)과 유의한 양의 연관성을 보였고, 고지혈증은 결절 양상의 독립적 결정요인이었다(OR=3.78, p<0.001). 이는 노화에 따른 갑상선 실질 변성, 순환·지질대사 이상으로 인한 혈관내피 기능 저하, 산화스트레스 및 세포증식 경로 활성화가 결절 병태생리에 관여함을 시사하며 연령, 성별, 고혈압, 고지혈증을 통합 고려한 위험도 평가와 대사 관리가 임상적 결절 예측 및 예방에 유용함이 확인되었다. This study analyzed the effects of metabolic syndrome–related factors—including age, sex, body mass index (BMI), hypertension, diabetes, and hyperlipidemia—on the presence, number, size, and malignancy of thyroid nodules among 216 health-screening participants. Thyroid nodule characteristics were evaluated using ultrasonography, and malignancy risk was classified according to the Korean Thyroid Imaging Reporting and Data System (K-TIRADS). Metabolic syndrome components were defined based on blood pressure, fasting glucose, and lipid profiles. Nodule size (F=5.698, p<0.001) and number (F=7.863, p<0.001) significantly increased with age, and both advanced age and female sex were major predictors of nodule multiplicity. BMI was associated with nodule presence (χ²=8.803, p=0.012) and multiplicity but not with higher K-TIRADS categories. In multivariate logistic regression, nodule malignancy risk demonstrated a positive association with age (OR=1.049, p=0.001), hypertension (OR=8.384, p=0.005), and hyperlipidemia (OR=8.000, p<0.001), while hyperlipidemia also independently influenced nodule type (OR=3.78, p<0.001). These findings suggest that thyroid parenchymal degeneration related to aging, along with circulatory and lipid metabolic abnormalities leading to endothelial dysfunction, oxidative stress, and activation of proliferative pathways, may contribute to thyroid nodule pathophysiology. Incorporating age, sex, hypertension, and hyperlipidemia into clinical risk assessment and metabolic management strategies may enhance prediction and prevention of thyroid nodule development.

반사실성 구문 ‘-었어야 했다’ 의미 인식 연구: 일본어·중국어 모어 한국어 학습자를 대상으로

전혜민,고기영 담화·인지언어학회 2026 담화와 인지 Vol.33 No.1

This study examines how L1 Japanese and Chinese learners of Korean interpret the counterfactual construction ‘-eoss-eoya haetda’, which expresses unfulfilled obligation and the speaker’s regret. This construction combines tense and modality to form a high-level semantic function, yet it is rarely addressed as an explicit instructional target in Korean language education. A True-Value Judgment Task was administered to three groups: 30 native Korean speakers, 43 L1 Japanese learners, and 46 L1 Chinese learners. The results showed that Japanese learners, whose L1 contains morphologically similar counterfactual forms, demonstrated high accuracy and consistent interpretation patterns, closely resembling native speakers. In contrast, Chinese learners, whose L1 lacks equivalent grammatical structures, showed lower accuracy and greater individual variation. These findings indicate that morphological congruency between learners’ L1 and Korean plays a significant role in acquiring tense–modality constructions expressing counterfactuality. The study highlights the pedagogical need to explicitly teach such constructions inKorean L2 instruction, particularly for learners whose L1s do not morphologically encode counterfactual meaning.

유아교사의 놀이성과 창의적 인성이 놀이교수효능감에 미치는 영향

전혜민,김효진 한국유아교육학회 2022 한국유아교육학회 학술대회자료집 Vol.2022 No.1