데이터 기반 모바일 앱 분류 및 사용자 평가에 영향을 미치는 앱 속성 분석

김가연(Gayeon Kim),박기정(Kijung Park) 대한산업공학회 2020 대한산업공학회지 Vol.46 No.2

학문 목적 한국어 교수자의 온라인 강의 경험에 관한 내러티브 탐구

김가연 ( Gayeon Kim ),장소영 ( Soyoung Jang ) 사단법인 아시아문화학술원 2021 인문사회 21 Vol.12 No.1

본 연구는 내러티브 탐구 형식으로 학문 목적 한국어 교수자가 온라인 강의 현장에서 어떠한 경험을 하는지 살펴보는 데 목적이 있다. 이를 위하여 2020년 9월 8일-10월 15일까지 학문 목적 한국어 교수자 3인을 1-3회 심층 면담하여 자료를 수집하여 전사하였고 전사된 자료는 분석적 메모와 코딩, 주제별 범주화를 거쳐 분석하였다. 그 결과 학문 목적 한국어 교수자는 혼란 속에서 수업을 준비하여 운영하였으나 학습자 관리의 어려움을 겪었다. 또한 실시간 온라인으로 한국어 말하기와 쓰기 활동을 할 때 교수자의 의도대로 진행하기 어려움을 알 수 있었다. 본 연구는 통계적 수치만으로 파악하기 어려운 학문 목적 한국어 교수자의 실제 교육 경험과 역할을 제시한 점에서 의의가 있다. 이는 향후 온라인 강의에 입문하려는 학문 목적 한국어 교수자들이 참고할 수 있는 기초 자료가 될 수 있을 것이다. The purpose of this study is to investigate the experience of Korean instructors for academic purposes on online lectures, which is conducted by a Narratvie Inquiry. In order to do this, I conducted in-depth interviews with 3 Korean instructors from Sept. 8th of 2020 to Oct. 15th of 2020. During that time, I interviewed them one to three times and I collected data and transcribed it. After that, I analyzed the transcribed data into these following procedures: analytic memo, coding and categorization of topics. I found Korean instructors prepared their classes in confusion and they had difficulty in managing learners. They also have trouble in their online classes of Korean speaking and writing activities in real time as they intended. This study is significant, in that it signifies the actual experience of these Korean instructors for academic purposes which is hard to understand with use of only statistics. Furthermore, this research can be used as an academic reference to these instructors who want to start online lectures in the future.

활성제 이온의 농도 변화에 따른 La₂MoO<SUB>6</SUB>:RE<SUP>3+</SUP> (RE = Eu, Sm) 형광체의 발광 특성

김가연(Gayeon Kim),신종언(Johngeon Shin),조신호(Shinho Cho) 한국표면공학회 2017 한국표면공학회지 Vol.50 No.4

Eu<SUP>3+</SUP>- or Sm<SUP>3+</SUP>-doped La₂MoO6 phosphors were synthesized with different concentrations of activator ions via a solid-state reaction. The X-ray diffraction patterns exhibited that crystalline structures of all the phosphors were tetragonal systems with the dominant peak occurring at (103) plane, irrespective of the concentration and the type of activator ions. The crystallites showed the pebble-like crystalline shapes and the average crystallite size increased with a tendency to agglomerate as the concentration of Eu<SUP>3+</SUP> ions increased. The excitation spectra of Eu<SUP>3+</SUP>-doped La₂MoO6 phosphors contained an intense charge transfer band centered at 331 nm in the range of 250-370 nm and three weak peaks at 381, 394, and 415 nm, respectively, due to the <SUP>7</SUP>F0→<SUP>5</SUP>L7, SUP>7</SUP>F0→<SUP>5</SUP>L6, and <SUP>7</SUP>F0→<SUP>5</SUP>D₃ transitions of Eu<SUP>3+</SUP> ions. The emission spectra under excitation at 331 nm exhibited a strong red band centered at 620 nm and two weak bands at 593 and 704 nm. As the concentration of Eu<SUP>3+</SUP> increased from 1 to 20 mol%, the intensities of all the emission bands gradually increased. For the Sm<SUP>3+</SUP>-doped La₂MoO6 phosphors, the emission spectra consisted of an intense emission band at 607 nm arising from the ⁴G5/2→<SUP>6</SUP>H7/2 transition and three relatively small bands at 565, 648, and 707 nm originating from the ⁴G5/2→<SUP>6</SUP>H5/2, ⁴G5/2→<SUP>6</SUP>H9/2, and ⁴G5/2→<SUP>6</SUP>H11/2 transitions of Sm3<SUP>+</SUP>, respectively. The intensities of all the emission bands approached maxima when concentration of Sm<SUP>3+</SUP> ions was 5 mol%. These results indicate that the optimum concentrations for highly-luminescent red and orange emission are 20 mol% of Eu<SUP>3+</SUP> and 5 mol% of Sm<SUP>3+</SUP> ions, respectively.

엔진 밸브용 내열강 표면처리에 따른 피로 특성 연구

김가연(Gayeon Kim) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11

인터뷰 내러티브에 대한 자리매김 분석의 적용: 한국어 학습자 Grace의 유학 경험을 대상으로

김가연 ( Gayeon Kim ) 국제한국어교육학회 2018 한국어 교육 Vol.29 No.영문호

이 연구에서는 자리매김 분석(positioning analysis)을 적용하여 한국 유학 생활에 관한 한국어 학습자의 인터뷰 내러티브를 분석하였다. 한국어교육에서 교수·학습 경험에 대한 인터뷰 내러티브는 대표적인 질적 연구 자료로서 수집되고 활용되어 왔지만, 그 분석 방법 자체에 대한 논의는 부족한 실정이다. 이에 본고는 상호작용으로서 내러티브의 관점에서 내용, 형식, 맥락을 모두 고려할 수 있는 접근 방법으로서 자리매김 분석의 적용을 살펴보았다. 자리매김 분석의 세 단계에 따라 한국어 학습자의 경험 내러티브를 1) 이야기의 내용과 등장인물, 2) 인터뷰 맥락에서의 상호작용, 3) 사회문화적 지배 담론의 세 가지 층위에서 각각 분석하였고, 학습자가 한국 유학 생활에서 획득하는 다양한 사회적 위치와 관계들 속에서 스스로를 어떻게 인식하는지 살펴보았다. 이를 통해 본 연구는 학습자의 언어적·사회적 경험 및 인식에 총체적으로 접근할 수 있는 수단으로서 내러티브 분석을 위한 구체적인 방안에 대해 논의하고자 하였다. The present study analyzes a Korean-language learner’s narrative on study abroad experience in Korea by applying positioning analysis. Narratives have been collected and analyzed as a popular source of qualitative research data in the field of Korean language education, but its analytical framework has not yet fully discussed. In this context, positioning analysis is examined as an approach to narratives-in-interaction, which can encompass content, form, and context in the analysis. The narrative of a language-learner is analyzed on the three levels of positioning analysis according to: 1) the content and characters of story, 2) the interaction in the context of the interview, 3) the sociocultural master narratives, and how the learner positions herself and negotiates her sense of self through the experiences of studying abroad in Korea. The study presents an analytical approach to narratives as meaningful resources for the linguistic and sociocultural experience and cognition of Korean-language learners. (Korea University)

단편소설을 활용한 중학교 다문화 배경 학습자의 읽기 교육 방안

김가연 ( Gayeon Kim ) 사단법인 아시아문화학술원 2021 인문사회 21 Vol.12 No.2

본 연구의 목적은 중학교 다문화 배경 학습자를 위한 읽기 교육 방안을 모색하는 데 있다. 이를 위하여 2017년에 개정된 한국어 교육과정(KSL)을 참고하였고 내용 중심 교수법(CBI)을 바탕으로 김유정의 단편소설 「봄봄」을 활용하여 총 4차시의 한국어 읽기 교육 방안을 마련하였다. 그 결과 1차시에는 소설의 시대적 배경과 작가를 탐구하고 소설을 바탕으로 제작된 애니메이션을 시청한 후 어휘학습을 한다. 2차시에는 소설을 읽고 주제 및 인물, 사건, 배경을 파악한다. 3차시에는 역할극을 준비하고 4차시에는 역할극을 수행하고 평가한다. 본 연구는 교육부의 지침을 바탕으로 중학교에서 한국어와 한국문화 교육을 직접 실행할 수 있는 방안을 제시하였다는 점에서 의의가 있다. 이는 장기적인 다문화 교육 지원 계획을 수립하거나 중등 한국어 교육과정에 필요한 교재를 개발할 때 참고할 수 있는 자료가 될 수 있을 것이다. The purpose of this study is to investigate teaching reading, to middle school learners who come from multi-cultural backgrounds. In order to complete this investigation, and with reference to a revised KSL curriculum of 2017, I conducted this study using CBI. To be more specific, I suggested the use of 4 reading class periods for teaching reading with Kim Yu Jeong’s short story, ‘Spring Spring.’ In the first period, learners are given enough time to study and understand the background of the story and the writer. After that, they watch an animation based on the novel and they learn the relevant and necessary vocabulary. In the second period, they will read the short story and grasp its theme, characters, events and location. In the third period, they will prepare group role plays and in the last period, they will present their role plays. It will be further expected that all of the group members assess their role plays within this last period. This study is significant, in that it suggests the manner in which to practice both Korean and the learning of the Korean culture in the middle school Korean classes, and it based on the guide lines provided by the Ministry of Education. It can be used as a reference when planning supporting programs for multi-cultural education and developing teaching materials for Korean as a second language curriculum for middle school learners.

한국어 학습자에 대한 다중언어주의적 접근 -국내 외국인 유학생의 외국어 학습 및 사용 경험을 중심으로-

김가연 ( Kim Gayeon ) 국제한국어교육학회 2021 한국어 교육 Vol.32 No.3

The purpose of this study is to explore the language learning experiences of international university students studying abroad in Korea, and to examine their perceptions and attitudes toward plurilingual competence. 100 international students at a Korean university were surveyed on their experiences learning and using foreign languages, and additional in-depth interviews were conducted to examine how learners’ language learning experiences, perceptions, and attitudes toward plurilingual competence could impact Korean language learning. According to the survey, all participants have learned more than two languages, with 36% of participants having learned three, 11% having learned four, and 4% having learned five or more languages. English was the dominant initial language learned, while Korean was most often learned as a second or third language. Various language learning experiences confirm that learners - as plurilingual speakers - shape their communication skills through the interaction between language knowledge and learning experiences that comprise their language repertoire. Learners’ perceptions of plurilingual competence were generally positive, but they lacked awareness of themselves as a plurilingual speaker. The study found the need for cross-linguistic and intercultural teaching and learning methods alongside education policies that enable learners to recognize the value of their linguistic and cultural assets. (Korea University)

딥러닝 기반 리뷰 유사도 검사를 통한 온라인 쇼핑몰의 가짜 리뷰 탐지 성능 분석

김가연(Gayeon Kim),정혜리(Hyeri Jung),민지수(Jisoo Min),김혁만(Hyeokman Kim),이경용(Kyungyong Lee) 한국정보과학회 2018 한국정보과학회 학술발표논문집 Vol.2018 No.12

한국어 교육학 분야의 질적 연구 동향 분석: 2015년-2021년 학술지 게재 논문을 대상으로

김가연 ( Kim Gayeon ),김영규 ( Kim Youngkyu ) 한국외국어대학교 외국어교육연구소 2022 외국어교육연구 Vol.36 No.4

The purpose of this study is a follow-up study to Sang-Mee Han (2016) and analyzes the trends of qualitative research published in five major journals in the field of Teaching Korean to Speakers of Other Languages (TKSOL). For this purpose, a total of 78 studies using a variety of qualitative research approaches were analyzed out of a total of 1,330 journal articles published between 2015 and 2021. The main findings are as follows: (1) Among the 7 qualitative research approaches, case studies and interpretive qualitative studies accounted for the majority; (2) The frequency with which each of the 6 data collection and analysis methods was used was in the following order: Interviews, introspective methods, document analysis, questionnaires with open-ended questions, observations, and qualitative interaction analysis; (3) When the qualitative studies in the field were analyzed by research topic, 60 studies, out of 78, related to ‘TKSOL teaching and learning’ were the most frequent, followed by 10 studies related to ‘TKSOL content’ and 8 studies related to ‘TKSOL in general’; (4) An additional analysis related to research ethics and research rigor/trustworthiness was performed, the result being that only 4 studies out of 78 were conducted with IRB approval, and 22 studies out of 78 described the process of securing the rigor/trustworthiness of qualitative studies. Based on the results from this study, it is suggested that research ethics and research rigor/trustworthiness should be considered and reported in subsequent qualitative studies in the field of TKSOL.

엔진 밸브용 내열강 표면처리에 따른 피로 특성 연구

김가연(Gayeon Kim) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11