신경망을 이용한 언어장애인용 문장발생장치의 동사예측

이은실,민흥기,흥승홍,Lee Eunsil,Min Hongki,Hong Seunghong 한국융합신호처리학회 2000 융합신호처리학회 논문지 (JISPS) Vol.1 No.1

In this paper, we proposed a method which predict the verb by using the neural network in order to enhance communication rate in augmentative communication system for Korean language disorders. Each word is represented by an information vector according to syntax and semantics, and is positioned at the state space by being partitioned into various regions different from a dictionary-like lexicon. Conceptual similarity is realized through position in state space. When a symbol was pressed, we could find the word for the symbol at the position in the state space. In order to prevent verb prediction's redundancy according to input units, we predicted the verb after separating class using the neural network. In the result we can enhance $20\% communication rate in the restricted space

토크 리플 저감을 위한 매트릭스 컨버터 구동 유도 전동기의 향상된 예측 제어 기법

이은실(Eunsil Lee),최우진(Woo Jin Choi),이교범(Kyo-Beum Lee) 제어로봇시스템학회 2015 제어·로봇·시스템학회 논문지 Vol.18 No.1

This paper presents an improved predictive control of an induction machine fed by a matrix converter using N-switching vectors as the control action during a complete sampling period of the controller. The conventional model predictive control scheme based matrix converter uses a single switching vector over the same period which introduces high torque ripple. The proposed switching scheme for a matrix converter based model predictive control of an induction machine drive selects the appropriate switching vectors for control of electromagnetic torque with small variations of the stator flux. The proposed method can reduce the ripple of the electrical variables by selecting the switching state as well as the method used in the space vector modulation techniques. Simulation results are presented to verify the effectiveness of the improved predictive control strategy for induction machine fed by a matrix converter.

수열탄화 통합공정 발생 폐수의 안정적인 처리 및 재이용 자원화 기술

이은실(Eunsil Lee),김은주(Eunju Kim) 대한환경공학회 2022 대한환경공학회 학술발표논문집 Vol.2022 No.11

입력 전원 외란 상황에서의 신경회로망 기반 전류 보상기를 이용한 매트릭스 컨버터의 출력 전류 개선

李恩實(Eunsil Lee),朴基佑(Kiwoo Park),李敎範(Kyo-Beum Lee) 전력전자학회 2010 전력전자학회 논문지 Vol.15 No.3

스파스 매트릭스 컨버터의 간단한 개방 사고 검출 기법

이은실(Eunsil Lee),이교범(Kyo-Beum Lee),정규범(Gyu-Bum Joung) 전력전자학회 2013 전력전자학회 논문지 Vol.18 No.3

연구논문 : 전기방사를 이용한 리그닌 나노섬유의 제조

이은실 ( Eunsil Lee ),이승신 ( Seung Sin Lee ) 한국의류학회 2014 한국의류학회지 Vol.38 No.3

Lignin is an abundant natural polymer in the biosphere and second only to cellulose; however, it is underutilized and considered a waste. In this study, lignin was fabricated into nanofibers via electros pinning. The critical parameters that affected the electros pin ability and morphology of the resulting fibers were examined with the aim to utilize lignin as a resource for a new textile material. Poly(vinyl alcohol) (PVA) was added as a carrier polymer to facilitate the fiber formation of lignin, and the electros pun fibers were depositedon polyester (PET) nonwoven substrate. Eleven lignin/PVA hybrid solutions with a different lignin to PVA mass ratio were prepared and then electros pun to find an optimum concentration. Lignin nano-fibers were electros pun under a variety of conditions such as various feed rates, needle gauges, electric voltage, and tip-to-collector distances in order to find an optimum spinning condition. We found that the optimum concentration for electros pinning was a 5wt% PVA precursor solution upon the addition of lignin with the mass ratio of PVA: lignin=1:5.6. The viscosity of the lignin/PVA hybrid solution was determined as an important parameter that affected the electros pinning process; in addition, the interrelation between the viscosity of hybrid solution and the electros pin ability was examined. The solution viscosity increased with lignin loading, but exhibited a shear thinning behavior beyond a certain concentration that resulted in needle clogging. Asteep increase in viscosity was also noted when the electros pun system started to form fibers. Consequently, the viscosity range to produce bead-free lignin nanofibers was revealed. The energy dispersive X-ray analysis confirmed that lignin remained after being transformed into nanofibers. The results indicate the possibility of developing a new fiber material that utilizes biomass with resulting fibers that can be applied to various applications such as filtration to wound dressing.

온라인 교양영어 과목의 녹음과제와 성찰리포트에 나타난 자기주도 학습 사례 연구

이은실(Eunsil Lee) 학습자중심교과교육학회 2020 학습자중심교과교육연구 Vol.20 No.12

사이버대학 온라인 강의는 녹화로 진행된다는 점에서 비동시적이며 일 방향적인 교사중심 수업이 되기 쉽기 때문에, 참여도가 높고 상호작용이 활발한 과제 학습을 고안하는 것이 중요하다. 과제학습을 수행하는데 있어서 사이버대학의 학생들은 자기주도 학습 역량을 갖추는 것이 필요하다. 이 연구는 온라인 교육에서 자기주도 학습을 활성화 할 수 있는 과제 개발이 중요하다는 것에 대한 이해에서부터 시작한다. 연구 목적은 자기주도 학습을 온라인 과제에 실제로 활용하는 방법을 토의하는 데 있다. 이를 위해 K 사이버대학의 교양영어 과목인 “팝송으로 배우는 영어”를 2015년부터 3년간 사례로 연구하였으며, 조사방법은 다음과 같다. 먼저, 이 과목에서 시행한 팝송 암기 녹음 과제와 녹음과정에 대해 성찰한 리포트를 연구 자료로 수집하여 분석하였다. 3년 동안 469개의 음성파일과 463개의 문서파일을 수집하였다. 그리고 이 기간 동안 설문조사를 실시하여 통계 분석하였다. 설문 결과를 통해 녹음과제는 학생들이 선호하고 학습 참여에 도움이 되는 활동이라는 것을 알 수 있었다. 결국 녹음 과제가 자기주도 학습에 도움이 되는 활동이라고 결론지을 수 있다. 성찰리포트 분석 결과, 곡 선택 이유는 감정적이며 인지적이고 전략적이었다. 노래 암기를 위해 다양한 전략을 적극적으로 사용하는 것도 알게 되었다. 이와 같은 결과를 통해 온라인 강의에서 자기주도 학습이 가능하도록 과제를 고안하고 잘 활용하면 학습효과가 높아진다는 것을 알게 되었다. Online lectures at Cyber Universities are usually conducted with one-way interaction and teacher-centered instruction. To make learning more engaging and interactive, adult learners at Cyber Universities are required to prepared to be self-directed learners. The study begins from understanding the importance of creating and designing assignment that can activate self-directed learning especially in online education. The purpose of the study is to discuss ways of putting self-directed learning to work at online classrooms. A general selective class, “Pop Song English,” at K Cyber University is the case of the study for three years from 2015 to 2017. Students turned in the voice file of a self-recorded pop song and the word file of self-reflected report. This assignment were collected for 3 years with the volunteerly responses of the survey questionaries. Collected data of 469 voice files and 463 word files were analyzed qualitatively, and the survey responses were analyzed statistically. The result of survey research shows that recording was a preferred and participatory activity. In addition, the many survey respondents think it is a self-directed assignment. The students who turned in the assignment appealed in their reflection report that they chose the song because it seemed easy to memorize, easy to sing, and easy to understand. Also they selected the songs because they were emotionally affected, or the songs brought them good memories from the past. To memorize the song they actively use various strategies. Online classroom should carefully create and design assignment that can activate self-directed learning to meet students’ need to improve their competence.

PERFORMANCE OF LEED-CERTIFIED HOME : Resident Satisfaction, Health Impact, and Energy Efficiency

Eunsil Lee(이은실) 한국주거학회 2021 한국주거학회 학술대회논문집 Vol.33 No.1

자기분화와 결혼만족도의 관계

이은실(Eunsil Lee),이이슬(Leeseul Lee) 학습자중심교과교육학회 2024 학습자중심교과교육연구 Vol.24 No.10

목적 본 연구에서는 자기분화와 결혼만족도의 관계를 정서인식명확성이 매개하는지 살펴보고, 부부의사소통만족도가 이러한 매개효과를 조절하는지를 검증하고자 하였다. 방법 이를 위해 전국에 거주하는 기혼남녀 249명을 대상으로 온라인 설문을 실시하여 자기분화, 정서인식명확성, 부부의사소통만족도, 결혼만족도에 대한 자료를 수집하고 SPSS Macro PROCESS 및 SPSS 23.0 프로그램을 사용하여 분석하였다. 매개효과 검증을 위해 PROCESS 4번 모형을 수행하고, 조절된 매개효과를 PROCESS 14번 모형을 통해 검증하였다. 결과 첫째, 자기분화와 결혼만족도의 관계에서 정서인식명확성의 매개효과가 유의하였다. 둘째, 정서인식명확성과 결혼만족도의 관계를 부부의사소통만족도가 조절하였다. 셋째, 자기분화와 결혼만족도의 관계에 대한 정서인식명확성의 매개효과가 부부의사소통만족도에 의해 조절되는 것으로 나타났다. 결론 이러한 결과는 상담 현장에서 낮은 자기분화로 인해 낮은 결혼만족도를 호소하는 내담자에게 정서인식명확성 혹은 부부의사소통만족도를 포함한 개입을 실시할 필요성을 시사한다. Objectives This study examines whether emotional recognition clarity mediates the relationship between self dif-ferentiation and marital satisfaction, and to verify whether couple communication satisfaction modulates this me-diating effect. Methods For this purpose, 249 adults were measured through self-report surveys for self differentiation, marital satisfaction, emotional recognition clarity, and couple communication satisfaction. Results First, in the relationship between self differentiation and marital satisfaction, the mediating effect of emotional recognition clarity was found to be significant. Second, the moderating effect of couple communication satisfaction was significant in the relationship between emotional recognition clarity and marital satisfaction. Third, it was found that couple communication satisfaction moderated the mediating effect of emotional recog-nition clarity on the relationship between self differentiation and marital satisfaction. Conclusions These results suggest the need for intervention on emotional recognition clarity and couple commu-nication satisfaction in counseling settings when clients complain of low marital satisfaction due to self differentiation.

전해제련 공정에서 전력저감을 위한 3세대 불용성촉매양극 개발 연구

이은실(Eunsil Lee),박정은(Jungeun Park),김지현(Jihyun Kim) 한국신재생에너지학회 2019 한국신재생에너지학회 학술대회논문집 Vol.2019 No.5