The Definition of Minimal Extrathyroid Extension in Thyroid Pathology by Analyzing Sizable Intra- and Extrathyroid Blood Vessels

전혜민,홍순원,임범진,장항석 대한병리학회 2012 Journal of Pathology and Translational Medicine Vol.46 No.6

Background: To define the exact boundary of the intrathyroid and extrathyroid aspects of a gland when determining the extent of cancer invasion, we plan to clarify the definition of sizable vascular structures, which is one of the helpful histologic clues in determining a minimal extrathyroid extension. We hypothesized that arterial wall thicknesses in extrathyroid soft tissue would be significantly different from the arteries in the thyroid parenchyma. Methods: Twenty cases of papillary carcinoma were selected. The numbers and wall thicknesses of the arteries and arterioles in intrathyroid and extrathyroid tissue were evaluated. The absence of nerve tissue in the thyroid gland was confirmed using the S-100 protein immunohistochemical stain. Results: The comparison of the mean thicknesses of the total arteries between the extrathyroid and intrathyroid tissues in the retrospective study (26.88 μm vs. 15.07 μm, respectively) and the prospective study (35.24 μm vs. 16.52 μm, respectively) revealed significant differences (p=0.000). The greatest thickness of the intrathyroid arteries was 67.93 μm. Conclusions: According to our results, the study showed that the extrathyroidal arteries were significantly thicker than the intrathyroidal arteries. We suggest that the sizable blood vessels of extrathyroidal arteries should be greater than 67.93 μm in thickness.

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

본 연구는 일본인 한국어 학습자의 한국어 피동문에 나타나는 어순 교체에 대한 습득을 살펴보는 데 목적이 있다. 한국어 피동문 어순 실현은 구조적 기준(어순 전형성)과 의미역 기준(논항 배분 전형성)에 따라 유표성이 다르게 나타나며, 어떠한 기준을 우선적 단서로 삼아 문장을 처리하는지에 따라 습득의 어려움을 예상할 수 있다. 본 연구에서는 한국어 모어화자 30명과 일본인 학습자 60명을 대상으로 하여 피동문 실시간(online) 처리를 관찰하기 위해 자기 조절 읽기 과제(self-paced reading)를 실시하였다. 그 결과, 한국어 모어화자는 의미적 단서보다 구조적 단서에 민감성을 보여 ‘피동작주-동작주’ 순서로 나타난 문장을 ‘동작주-피동작주’보다 빠르게 처리하였다. 그러나 이와 달리 일본인 학습자는 숙달도와 상관없이 두 유형의 문장의 읽기 속도에 차이가 나타나지 않아 구조적 단서와 의미적 단서에 모두 민감성을 보이지 않았다. 이러한 연구 결과는 일본인 한국어 학습자가 L1과 L2의 형태적 유사성에도 불구하고 피동문 실시간 문장 처리에 있어 여전히 어려움을 겪는다는 것을 의미한다. This study investigated whether L1 Japanese learners of Korean can acquire the word order alternations of the Korean passive. In self-paced reading, Korean native speakers (n = 30) showed greater sensitivity to structural cues than semantic ones, while Japanese L2 Korean speakers (n = 60) showed no difference in reading time, regardless of proficiency, as well as showing no sensitivity to structural or semantic cues. These results indicate that Japanese L2 Korean speakers have difficulty with the on-line processing of sentences despite the morphological congruency between L1 and L2.

산업공학의 서비스 과학에의 기여를 위한 서비스 정의

전혜민,곽우람,장수영 한국경영과학회 2007 한국경영과학회 학술대회논문집 Vol.2007 No.11

As the service industry continues to grow in importance, a new research field called service science has formed so as to conduct more comprehensive and scientific analysis of service. However, much further research is required until we can develop the common terminology and methodology for service design and improvement. A foundational step toward this is giving a lucid definition to service which reflects the intrinsic qualities of it. Many of the service definitions mentioned in existing studies had the limitation that they considered service as the residual from physical products, or tried to conceptualize service based on some characteristics. In this paper we compare and analyze existing studies, discuss about the essential nature of services, and suggest a more comprehensive investigation into service.

An Analysis of English Nursing Textbooks: On the Use of All Right in Medical Encounters

전혜민 신영어영문학회 2023 신영어영문학 Vol.85 No.-

The current study focuses on institutional talk in the medical encounters between nurses and patients. Based on an analysis of the institutional talk in English nursing textbooks, three functions of all right emerge as a discourse marker. In addition, the data reveal the different frequency of use of all right between medical professionals and patients. The findings reflect the asymmetry between medical professionals and patients, confirming the findings of previous research. The intonational end of all right is found to be related to the location in the conversation as well as the patient’s attitude toward medical treatment. The results emphasize the need for further research to elucidate the multifunctionality of discourse markers in various institutional settings.

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.

중국인 한국어 학습자의 관형격조사 ``의`` 습득 연구

전혜민,박선희 한국문법교육학회 2016 한국문법교육학회 학술발표논문집 Vol.2016 No.2

건성안 환자의 광학적 특성에 대한 객관적인 분석

전혜민,이동준,Hye Min Jeon,Dong Jun Lee 대한안과학회 2014 대한안과학회지 Vol.55 No.11

Purpose: To evaluate the efficacy of Optical Quality Analysis System (OQAS<SUP>Ⓡ) instrument for the assessment of dry eye syndrome. Methods: Dynamic recording of double-pass (DP) retinal images was performed in 1 eye dry eye patients (20 eyes) and in healthy controls (20 eyes) for 20 seconds after eye blinking. Results: The mean objective scatter Index (OSI) value was 4.53 in dry eyes, 0.67 in healthy eyes and the standard deviation of OSI was 1.20 in dry eyes and 1.18 in healthy eyes. The patients with dry eyes showed significantly higher mean OSI and standard deviation values. Ocular scatter increased over time and significant changes occurred 13.5 seconds after blinking. The difference in OSI value between 0 second and 20 seconds was significantly greater in dry eye patients (4.15) than in controls (0.32). Conclusions: Ocular scatter increased over time after blinking. The dry eye patients had larger and more variable ocular scatter index than the controls. OQAS<SUP>Ⓡ may be useful to detect and follow-up tear film-related patient complaints in dry eye syndrome. J Korean Ophthalmol Soc 2014;55(11):1600-1605

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.

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.