『연세 시사한국어』 교재의 구성 원리와 실제

조현선 ( Hyun Sun Cho ) 연세대학교 언어연구교육원 한국어학당 2015 외국어로서의 한국어교육 Vol.43 No.-

Textbooks play a crucial role in language education. Understanding a certain society requires not only mastering language skills, but also familiarizing oneself with the current affairs and cultural background of the country in which the language is spoken. The purpose of this study is to present the principles and practice of developing ``Current Issues and Affairs`` Textbook for advanced Korean language learners. Until recently efforts to introduce textbooks that are rich in current issues and cultural insights have been severely limited. The textbook will hopefully improve Korean language learners` knowledge of and literacy in Korean language, society and culture. The textbook categorizes current issues and affairs frequently appeared in news and TV into 10 themes: politics, economy, society, culture, international relations, science, education, daily-life, security and environment. Each theme consists of 3 sub-themes. 15 lessons focus on improving listening skills, and other 15 lessons are designed to improve reading skills. Listening-focused lessons are complemented by theme-related reading materials with speaking and writing tasks; all focused lessons are complemented by other skill-set improving tasks. Diverse materials such as speech, television news, interview, debate, discussion, column editorial column are allocated throughout the textbook. The textbook is designed to enhance advanced Korean language learners integrated communicative abilities and overall background knowledge of Korean society and culture.

충남지역 중학생의 채소 섭취실태와 식습관에 관한 연구

조현선(Hyun Sun Cho),김명희(Myung Hee Kim),최미경(Mi Kyeong Choi) 대한지역사회영양학회 2010 대한지역사회영양학회지 Vol.15 No.4

The purpose of this study was to provide basic data for nutritional education for juveniles` desirable vegetable intake by analyzing their vegetable intake, dietary habit and nutrient intakes according to gender of middle school students in Chungnam. The average age of the subjects was 15.0, height was 162.5 cm, weight was 53.5 kg and their average BMI was 20.1kg/m2. The frequency of eating supper in girls was lower than that in boys. Many respondents answered that a meal-time was 10~20 minutes. Without gender difference, more than 90% respondents thought that vegetables were good for health. As for the preference of vegetable, subjects responded, “I am in the middle”, “I like them”, “I dislike them”, “I like them very much”, and “I dislike them very much” in order, without gender difference. The frequent eaten leaf vegetable was Chinese cabbage, the frequent eaten fruit vegetable was cucumber, and the frequent eaten root vegetable was radish. The favorite leaf vegetable was lettuce, the favorite fruit vegetable was corn, and the favorite root vegetable was sweet potato. The preference degrees of taro and ginger were very low. The reasons why they liked a vegetable were that it was delicious and they ate it at home often. In addition, the reason why they disliked vegetables was that they are untasty in flavor or texture and it showed that many students had a prejudice that vegetables were untasty. The intakes of plant protein, dietary fiber, ash and INQs of dietary fiber, calcium, vitamin C, folate, vitamin E in the group with high preference of vegetables were significantly higher than those of low preference group. The study results indicate that intake frequency and preference of root vegetables in juveniles are low and the major reasons of these results are taste and eating experience of vegetables. In addition, the intake amounts of dietary fiber and folate are poor in the subjects with low preference of vegetables. Therefore, families and schools should make efforts that juveniles can recognize the importance of vegetable intake and select various vegetables properly through the development of cooking methods and systematic nutrition education. (Korean J Community Nutrition 15(4): 525~535, 2010)

한국어 학습자의 상담 만족도에 관한 연구

조현선 ( Hyun Sun Cho ) 연세대학교 언어연구교육원 한국어학당 2012 외국어로서의 한국어교육 Vol.37 No.-

A Study on counseling satisfaction level of learners of Korean language. Teaching Korean as a Foreign Language, 37, 385~410. The number of Korean language learners is consistently increasing. Many of them are confronted with issues that are difficult to solve by themselves in an environment that they had not experienced before. One of the ways they attempt to solve their problems is to seek counseling. This study surveys and analyzes the level of satisfaction with the counseling services, identifies their difficulties, and thus aims to improve teaching Korean to be more effective and learner-centered. This study surveyed 145 learners of Korean who had received counseling. The survey results were collected and analyzed. This study analyzed students` satisfaction of counselors, physical environment of the counseling room, and counseling services. Results showed that among these three factors, students expressed the highest level of satisfaction regarding counselors. According to the findings of this research, the primary cause of differentiation between reported satisfaction levels was the respondent`s nationality. On the other hand, results indicated no meaningful correlation between other variables(gender, age, grade, and counseling method) and the students` level of satisfaction. The research also showed that satisfaction regarding counselors, satisfaction regarding the physical environment of the counseling room, and counseling satisfaction level were positively correlated to a great extent.

충남 지역 중학생의 체질량 지수에 따른 체형 인식과 식습관에 관한 연구

조현선 ( Hyun Sun Cho ),최미경 ( Mi Kyeong Choi ) 한국식품영양학회 2010 韓國食品營養學會誌 Vol.23 No.3

The purpose of this study was to provide basic informations for educating juveniles on desirable body image recognition by examining their body image recognition and comparing and finding problems according togender and body mass index (BMI) in middle school students. The average age of the subjects was 15, their average height was 162.5㎝, their average weight was 53.5㎏, and their average BMI was 20.1㎏/㎡. Male students wanted togain weight and female students wanted to lose weight. As for body shape, female students thought that they were fat more often than male students. Also the more overweight the students were, the higher their concerns and experiences toward weight control. Among weight control methods, exercise scored highest in all BMI groups. Over 80% of the respondents answered that their weight control effort were not systematic such as via professional counseling. As for the frequency of eating breakfast and dinner in female students, the more a student was overweight, the lower their frequency of eating breakfast and dinner. Many respondents answered that a typical meal time was ``10∼20 minutes``. The average eating habit score for all subjects was 38.0. The eating habit scores of male students were significantly higher than those of female students, and there were no significant differences among BMI groups. Eating habit score of ``I have more than two meals with rice everyday`` in female overweight group was significantly higher than those of other two groups. These results indicate that the female students` degree of preference for a slim body shape were higher than those of male students. In addition, weight control by students is not systematic through professional counseling; instead they attempt to control their weight by themselves such as a meal skip, which lead to potential danger that they may lose weight carelessly. Therefore, correct body image recognition is greatly needed, and families and schools should make ceaseless efforts to help students properly control their weight and have correct eating attitudes.

한국어 학습자의 상담 사례 분석

조현선 ( Hyun Sun Cho ) 연세대학교 언어연구교육원 한국어학당 2011 외국어로서의 한국어교육 Vol.36 No.-

Fifty years have passed since the opening of the first formal Korean Language institute. There is a steady increase in the number of foreigners wanting to learn Korean. In order to satisfy this increasing demand, all major universities offer Korean language programs. However, these institutes have not yet developed a solid program to aid the difficulties that their students face outside of their classrooms. This study is an analysis of counseling cases of Korean learners. This article specifically aims to address this problem by analyzing and categorizing different needs expressed by students during their consultation. According to the analysis of 2,318 counseling cases of all students who have visited the Counseling Center in Yonsei KLI, 36.8% of the students were of Japanese nationality, while 30.9% were of Chinese. And jobs and careers was the most frequent topic of all the counseling cases. According to analysis on the teachers giving assistance in counseling centers, they mostly voiced difficulty in their inability to give the students a practical solution to their problems.

보건정보 자료를 이용한 나무구조회귀모형의 시각화에 대한 고찰

조현선 ( Hyun Sun Cho ),이은경 ( Eun Kyung Lee ) 한국보건정보통계학회 2020 보건정보통계학회지 Vol.45 No.1

Objectives: Among machine learning techniques, a tree-based regression model is widely used as easy to interpret and easy to use results. Methods: In this study, we examine the characteristics of regression models using various tree structures implemented in R, and apply them to public health data for visual representation and analysis to enhance understanding of the models and data. Results: We also look at the random forest, gradient boosting model, and xgboost that incorporate the results of various tree-structured model estimates using bagging and boosting, and visualize these estimation processes to compare the results of the model estimates. It also compares the performance of various tree-structured models using various public health data. It visually examines that the performance of the tree-structured models may vary depending on the characteristics of the data. Conclusions: Through this study, we apply the tree-structured models to public health data to enhance understanding of the data and to help identify and visualize the mechanism of the data.

의복소비가치가 프리미엄급 린넨의류의 사용유용성과 용이성 및 신제품 수용의도에 미치는 영향

조현선(Hyeon-Seon Cho),김찬호(Chanho Kim) 한국의상디자인학회 2018 한국의상디자인학회지 Vol.20 No.2

발사체 분리파이로 신뢰성 분석

조현선(Hyeon-Seon Jo),조상연(Sang-Yeon Cho) 한국추진공학회 2021 한국추진공학회 학술대회논문집 Vol.2021 No.5

표정 분류 연구

손나영,조현선,이소현,송종우,Son, Nayeong,Cho, Hyunsun,Lee, Sohyun,Song, Jongwoo 한국통계학회 2018 응용통계연구 Vol.31 No.5

최근 등장하는 다양한 사물인터넷 기기 혹은 상황인식 기반의 인공지능에서는 사용자와 기기의 상호작용이 중요시 된다. 특히 인간을 대상으로 상황에 맞는 대응을 하기 위해서는 인간의 표정을 실시간으로 인식하여 빠르고 정확한 판단을 내리는 것이 필요하다. 따라서, 보다 빠르고 정확하게 표정을 인식하는 시스템을 구축하기 위해 얼굴 이미지 분석에 대한 많은 연구들이 선행되어 왔다. 본 연구에서는 웹사이트 Kaggle에서 제공한 48*48 8-bit grayscale 이미지 데이터셋을 사용하여 얼굴인식과 표정분류로 구분된 두 단계를 거치는 얼굴표정 자동 인식 시스템을 구축하였고, 이를 기존의 연구와 비교하여 자료 및 방법론의 특징을 고찰하였다. 분석 결과, Face landmark 정보에 주성분분석을 적용하여 단 30개의 주성분만으로도 빠르고 효율적인 예측모형을 얻을 수 있음이 밝혀졌다. LDA, Random forest, SVM, Bagging 중 SVM방법을 적용했을 때 가장 높은 정확도를 보이며, LDA방법을 적용하는 경우는 SVM 다음으로 높은 정확도를 보이며, 매우 빠르게 적합하고 예측하는 것이 가능하다. Effective interaction between user and device is considered an important ability of IoT devices. For some applications, it is necessary to recognize human facial expressions in real time and make accurate judgments in order to respond to situations correctly. Therefore, many researches on facial image analysis have been preceded in order to construct a more accurate and faster recognition system. In this study, we constructed an automatic recognition system for facial expressions through two steps - a facial recognition step and a classification step. We compared various models with different sets of data with pixel information, landmark coordinates, Euclidean distances among landmark points, and arctangent angles. We found a fast and efficient prediction model with only 30 principal components of face landmark information. We applied several prediction models, that included linear discriminant analysis (LDA), random forests, support vector machine (SVM), and bagging; consequently, an SVM model gives the best result. The LDA model gives the second best prediction accuracy but it can fit and predict data faster than SVM and other methods. Finally, we compared our method to Microsoft Azure Emotion API and Convolution Neural Network (CNN). Our method gives a very competitive result.

주요 4개 공학분야 연구자의 문헌인용 행태 연구

조현양,조현선,Cho, Hyun-Yang,Cho, Hyun-Sun 한국과학기술정보연구원 과학기술정보센터 2005 Journal of Information Science Theory and Practice Vol.36 No.2

이 연구는 공학분야 가운데 4개 주요 분야에서 발행되는 학회지에 수록된 논문에 대한 인용분석을 실시하여 연구자들이 연구활동 시 이용한 형태별 정보, 평균 인용 건수, 인용된 문헌의 언어, 나이, 그리고 인용된 정보의 반감기에 있어서 분야별로 어떠한 차이가 있는 가를 규명해 보았다. 분석 대상은 1999년, 2001년, 2003년 3년에 걸쳐 기계, 건축, 전기, 전자 등 4개 분야의 학술지 논문 2,333편에 포함된 2만 9,610개의 인용된 문헌이었다. 분석결과 5개 항목 모두에서 분야별로 차이가 있음을 발견하였으며, 이에 근거하여 관련 분야의 장서개발 시 우선순위 및 수집된 장서의 서가배열에 대한 의견을 제안하였다. This study is aimed at investigating if there were the differences on citing behavior of researchers among different fields of engineering, in terms of five items, such as types of resources cited, the average number of documents cited, the demand of current documents, languages used in cited documents, and the life decrease phenomena of information. 29,160 cited references in 2,333 articles from 4 major selected journals, published in the year of 1999, 2001, and 2003 were analyzed. The result of this study shows that there were the differences on citing behavior of researchers among different fields of engineering on all 5 items. And also, some suggestions were given the priority of library collection and shelf arrangement for the library.