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최영인(Young-In Choi),공현철(Hyeon C. Gong),서견수(Kyoun-Su Seo),조미옥(Miok Joh),이준호(JoonHo Lee),오범석(Bum-Seok Oh) 한국항공우주학회 2004 韓國航空宇宙學會誌 Vol.32 No.2
현재 직접모사 몬테카를로 방법은 희박기체역학에서 널리 활용되고 있다. 고도가 100킬로미터 이상의 지역에서 공기의 밀도는 매우 낮다. 따라서 일반적인 연속체방정식으로 희박지역의 유동을 계산하고 나타내는 것은 거의 불가능에 가깝다. 그래서, 희박기체유동의 시뮬레이션을 위해 분자역학에 기반을 둔 직접모사 몬테카를로 방법이 개발되었다. 직접 모사 몬테카를로 방법의 가장 큰 장점 중의 하나는 비교적 쉬운 알고리즘으로 다양한 물리적 과정을 시뮬레이션 할 수 있다는 것이다. 반면, 단점은 FDM과 비교했을 때, 비교적 계산시간이 오래 걸린다는 것이다. 하지만, 오늘날 이러한 단점은 병렬처리를 이용하여 많이 개선되고 있다. 본 연구에서는 직접모사 몬테카를로 방법의 최대 단점인 계산시간을 줄이기 위하여 비점성 유동을 계산하는 일반적인 직접모사 몬테카를로 방법의 알고리즘을 수정하여 제시하였다. 수정된 알고리즘으로 비점성 유동 계산에 직접 적용하여 얻은 결과를 FDM으로 얻은 결과와 뉴톤 방법으로 구한 결과를 비교하여 결과적 차이가 거의 없음을 증명하여 수정된 직접모사 몬테카를로 방법의 알고리즘의 타당성을 입증하였다. In these days the use of Direct Simulation Monte Carlo(DSMC) method in rarefied gas dynamics is a widely accepted approach . At the altitude of l00 ㎞ or higher, the air density becomes very low. So it is impossible to describe rarefied regimes by continuum equations. Thus, a DSMC method based on the molecule dynamics is developed for the simulation of rarefied gas flow. The advantage of DSMC methods is the possibility to simulate various physical processes. On the other hand, the disadvantage is that DSMC methods require large amount of computing time compared with finite-difference methods. This disadvantage can be to some extent compensated in parallel computations. In this research, a modified DSMC method for inviscid flows for saving computation time showed that there is no difference between the result of FDM and that of the modified DSMC method, and proved the validity of the modified DSMC algorithm.
최영아 김천과학대학 2008 김천과학대학 논문집 Vol.34 No.-
This study was done to identify the relationship between health status and life satisfaction of the elderly in community. The subjects in this study were 420 elderly who resided in community in K city and M city. Data collection was done from August 20 to September 14, 2007. The instrument used were health status scale developed by Young-Hee Choi et al.(1990) and life satisfaction scale developed by Wood et al.(1969). The data were analyzed by descriptive stastics, t-test, ANOVA, pearson's correlation coefficient with SPSS Win 10.0 program. The results were as follows : 1. The mean score of physical health status was 78.80, psychological health status was 66.45 and life satisfaction was 22.72. 2. According to age, level of education, economic status, spouse's presence, family pattern and current illness, the score of physical health status and psychological health status of elderly in community showed significant differences. 3. According to age, level of education, economic status, spouse's presence, family pattern and current illness, the score of life satisfaction of elderly in community showed significant differences. 4. There was a significant positive correlation between health status and life satisfaction.
청중 고려를 위한 발표 수업 모형 설계 및 적용에 대한 연구 ―대학 강좌 사례를 중심으로
최영인 ( Choi Youngin ) 국어교육학회 2019 國語敎育學硏究 Vol.54 No.2
본 연구에서는 대학교에서 개설되는 화법 수업 및 교양 수업에 적용할 수 있는 ‘청중 고려를 위한 발표 수업 모형’을 제안하였다. 이 수업 모형은 교수체제 설계의 일반 모형인 ADDIE의 단계에 따라 구안되었고, 충남 소재의 1개 대학 강좌에 적용한 결과를 반영하여 수정하였다. 논문의 구성은 ADDIE 모형의 단계에 따라 분석-설계-개발-실행-평가의 흐름으로 진행된다. 이 수업 모형은 학습자의 모든 말하기에서 필요한 청중 고려 능력의 신장을 목표로 한다. 설득 화법 구성 및 청중 고려의 원리와 방법을 이해하고, 실제 말하기를 통해 학습한 원리와 방법을 적용하며, 수업 전반에서 화자와 청자의 상호교섭성을 경험하며, 평가를 통해 화자와 청자 모두에게 배움의 기회를 제공할 것을 기본적인 원리로 삼는다. The aim of this study was to develop an “instructional model for audience consideration education” that can be applied in “liberal arts speech” classes at universities. The purpose of this instructional model is to strengthen the learners’ skills with regard to audience consideration and persuasive expression. The model is organized to instill an understanding of the principles and methods used to practice audience consideration, as well as how to apply the concepts learned to practical persuasive speech exercises. Furthermore, this instructional model was designed so that learners can rotate between active speaker and listener roles, as well as serve as evaluators. The “instructional speech model for audience consideration education” in this study was developed on the basis of ADDIE, a general model for instructional systems design. This study reported on the specific model design process and the results of the model’s application in a university setting.
최영이 부산외국어대학교 외국어연구소 2022 외국어연구 Vol.35 No.-
This study suggests that interaction of the features in English consonant clusters results in assimilation and dissimilation through the same underlying mechanism. Unlike general belief that assimilation and dissimilation are regarded as the opposite phenomena, they share the same perceptual constraints. In terms of the interaction between adjacent consonants, both persue the same goal, that is, the harmony in making speech sounds. Therefore, this study suggests that there must exist English-specific feature preservation rank depending on the information of perceptual cues in each feature. To validate this assumption, I establish perceptual constraints associated with the feature preservation of each consonant and analyze two phenomena in Optimality Theory.
최영은,하재명 대한건축학회 2003 대한건축학회논문집 Vol.19 No.5
The purpose of this study is to examine the access characteristics of people visiting at the urban street and district. In this study, the access characteristics were classified into three factors, a access method, a visiting aim and a visitor's character. The case study areas were selected the nine streets and districts which crowded with stores dealing with similar goods in Daegu CBD. The results of the case study has been summarized as follows; Firstly, in the individual districts dealing with a specific goods, the access characteristics appeared differently. Secondary, the visitors' visiting aim in the case study areas affected the selection of a access method. Thirdly, the street behavior according to a operational situation appeared differently. And in the interview with visitors, the subjects answered that the urgent problems in the case areas are the traffic confusion and the shortage parking space.