펄스 아크 스파크 제트 플라즈마 구동기에 의해 발생된 고속 제트의 효율적 운전 성능 특성에 관한 연구

김영순(Young Sun Kim),신지철(Jichul Shin) 한국항공우주학회 2017 韓國航空宇宙學會誌 Vol.45 No.11

아크 플라즈마에 의해 구동되는 스파크 제트의 다양한 에너지 공급 방법에 따른 효율적 운전 성능 특성에 대한 실험적 연구를 수행하였다. 펄스 당 37 mJ의 주입 에너지에 의한 급속한 기체의 가열에 의해 약 330 m/s의 고속 제트가 발생함을 확인하였다. 제트의 최대 속도와 침투 거리는 각각 주입된 전력량과 펄스 당 주입된 에너지에 비례하였다. 낮은 에너지에서는 오리피스 직경이 작을수록 더 높은 속도의 제트가 발생하였다. 공급 에너지가 같다면 전류를 높인 펄스가 펄스 폭을 높인 펄스보다 높은 속도의 제트를 발생시켰다. 펄스 폭이 약 10 μs이고 펄스 당 에너지가 약 10 mJ인 경우가 효율적인 운전에 보다 더 적합한 것으로 확인되었다. The performance of a spark jet driven by pulsed-arc plasma was investigated experimentally for various energy input. A high-speed jet (about 330 m/s) was obtained by rapid gas heating produced by 37 mJ of deposited energy per pulse. The peak velocity and penetration distance of the jet were proportional to the deposited power and the deposited energy per pulse, respectively. A smaller orifice diameter produces a higher velocity jet at lower energy levels. For the same deposited energy, higher-current pulses produce a higher jet velocity than higher-pulse-width pulses. A total deposited energy of about 10 mJ per pulse with a pulse duration of about 10 μs was found to be the optimum for energy- efficient operation.

일부 치위생과 학생들의 임상실습 장소에 따른 만족도 조사 연구

김영순 ( Young Soon Kim ),김연선 ( Yeon Sun Kim ) 대한예방치과·구강보건학회 2010 大韓口腔保健學會誌 Vol.34 No.4

Objectives. In addition to the theoretical training provided by dental colleges, clinical training is also important. The purpose of this study was to analyze data regarding the efficiency of clinical dental training by comparing and analyzing levels of satisfaction of dental hygiene student trainees with their clinical training. Methods. From Sep 1, 2009 to Sep 30, 2009, questionnaires were distributed to students in 2 colleges in the Seoul, 1 college in Kyungi-do, 1 college in Chungcheongbuk-do, 1 college in Chungcheongnam-do, and 2 colleges in Kangwon-do. Data from 331 completed and returned questionnaires were statistically analyzed using SPSS (ver. 12.0). Results. Students in dental college hospitals were the most satisfied, followed by those in general hospitals, private dental clinics, dental hospitals and public health centers. Students in dental college hospitals were the most satisfaction with the educational curriculum, environment and time schedule. However, students had only a low level of satisfaction regarding their personal relationships with faculty. Students in general hospitals gave relatively positive reviews regarding educational curriculum and environmen. Again, students had only a low level of satistfaction with personal relationships with faculty members and instructional methods. In contrast, students training at public health centers gave relatively positive reviews for personal relationships with faculty and instructional methods. However, they gave low ratings for variety of practical experience and educational equipment. Students training at private dental clinics and dental hospitals gave medium reviews overall. Students at smaller dental hospitals were more adaptable and gave good reviews regarding personal relationships than did students at private dental clinics. Conclusions. Clinical training programs should be improved by developing training programs in which students have better relationships with staff in charge of student education. Limitations of this study include difficulties in generalization of study outcomes due to a limitation of the number of subjects and the number of geographic areas surveyed.

치아인접면 삭제 및 연마에 따른 법랑질 표면의 변화에 관한 주사전자현미경적 연구

김영순(Young-Sun Kim),김광원(Kwang-Won Kim) 대한치과교정학회 1992 대한치과교정학회지 Vol.22 No.1

This study was done to evaluate the changes of enamel surface by interproximal stripping and recovery of it by polishing. The number of 34 1st premolars which had extracted for orthodontic treatment were selected as samples. Interproximal stripping was performed by hand with metal strip and strip placer (Dentaurum Co., Germany) and low speed handpiece with diamond disk (Superdiaflex, Germany). Polishing was performed by hand with plastic strip (3M Col) and low speed handpiece with whip-mix, DCPA (Dicalcium Phosphate, Anhydrous, CaHPO₄) powder and Sof-lex (3M Co. U.S.A.) polishing kit. Each groups were examined under the scanning electron microscope (JEOL Co., JSM-840A, Japan) and the following results were obtained: 1. The stripped group performed by metal strip and diamond disk altogether showed deep furrow on the enamel surface as wide as about 10µm. 2. There could be seen more irregular scratched line in the group stripped by metal strip than that by diamond disk. 3. The polished group performed by plastic strip and DCPA powder showed slight smoothening of the edge of stripped furrow on the enamel surface without relation to the stripping method. 4. The polished group performed by Sof-lex progressive polishing kit could not avoid the formation of the furrows on the enamel surface according to the particle size without relation to the stripping method. 5. The polished group performed by the superfine polishing wheel, the final stage of Sof-lex polishing method showed shallow scratched line as wide as within about 2µm on the enamel surface without relation to the stripping method. 6. The interproximal stripped enamel surface could not recover its original surface texture by any kind of polishing methods.

디자이너와 머천다이저의 갈등과 역할 주도 의식에 관한 연구

김영순 ( Young Soon Kim ),황선정 ( Sun Jung Hwang ),김일 ( Il Kim ) 한국패션디자인학회 2013 한국패션디자인학회지 Vol.13 No.4

국내 브랜드의 입지는 더욱 약화 되어가고 있고, 패션 기업의 전문가를 통한 체계적인 기획 시스템 보급은 시급한 상황이다. 패션 브랜드의 대표적인 전문가로는 디자이너와 머천다이저가 있다. 그들은 업무진행 과정에서 빈번한 갈등 경험하는데 그로 인하여 브랜드의 경쟁력이 약화 되고 있다. 본 연구의 목적은 패션 상품 기획에서 디자이너와 머천다이저의 갈등에 관한 연구를 하여 관리자 입장에서 업무에서 일어나는 갈등을 효율적으로 조절함으로써 업무 능력을 향상 시켜 브랜드 경쟁력을 강화 시키고자 한다. 본 연구는 대기업 및 중소기업에 근무하는 어패럴 패션 디자이너와 어패럴 패션 머천다이저를 350명을 대상으로 예비 설문을 통해 설문 문항을 수정 및 보완하여 본 조사를 실시하였다. 본 연구 분석은 PASW Statistics 18.0 통계 프로그램을 이용하였으며 빈도분석, 주성분분석, T-test, 상관관계분석이 사용되었다. 본 연구의 결과를 보면 다음과 같다. 첫째. 디자이너와 머천다이저의 역할 주도 의식을 분석한 결과, 디자인 개발 업무를 제외한 업무에서 머천다이저의 역할 주도 의식이 디자이너에 비해 높게 나타났다. 둘째, 디자이너와 머천다이저의 갈등을 분석한 결과 각각의 업무 주도권이 높은 단계에서 업무 갈등이 높다는 것을 알 수 있다. 셋째, 디자이너의 경우에는 머천다이저의 역할 주도 의식이 높을수록 역할 갈등이 높은 반면, 머천다이저의 경우에는 디자이너의 역할 주도 의식이 높은 디자인 개발 단계에서의 역할 주도 의식이 높을수록 역할 갈등이 높다는 것을 알 수 있다. 본 연구는 관리자의 입장에서 디자이너와 머천다이저의 갈등 현상을 파악하고 업무상에서 일어나는 갈등을 조절함으로써 양자 모두 자발적이고 협조적으로 업무를 수행하게 함으로써 브랜드 경쟁력을 키우는데 유용한 자료로 활용될 수 있다는 데에 의의가 있다. National fashion brands have grown weaker than before. That is why there is an urgent need to propagate a formulated planning system for the fashion industry based on experts working for domestic fashion companies. Experts specializing in fashion brands are represented by designer and merchandiser. They often face conflicts in the process of their work. That is why their job satisfaction and performance decline enough to weaken the competitive edge of a brand. The purpose of this study is to investigate potential conflicts that designer and merchandiser may face in the process of fashion merchandising and help management to efficiently control any conflicts occurring in work from the viewpoint of management, so that their working ability may improve and lead to building up a competitive advantage for fashion brands. This study conducted a survey on 350 subjects working in large, and medium and small-sized fashion companies. For data analysis, this study used PASW Statistics 18.0 as a statistical program and analyzed all data using frequency analysis, principal component analysis, t-test, and correlation analysis respectively. As a result, this study came to the following findings. First, this study analyzed awareness about role initiative of merchandise and designer. It was found that merchandisers had a higher level of awareness than designers about role initiatives in all work except design development. Second, we analyzed conflicts between designers and merchandisers. As a result, the high job conflicts appeared in the stage where each role has high power. Third, the more merchandisers intended to take a leading role, the higher designers had role conflicts. But, the more designers intended to take a leading role in the design development stage, the higher merchandisers had role conflicts. This study seeks to identify phenomenal aspects of conflicts faced by both designers and merchandisers in the work process and help managers to control any conflicts, so that it may assist both of these two parties in voluntarily and cooperatively performing their works. Hence, it is expected that the findings of this study will be useful to enhance the brand competitiveness of fashion companies.

고령화에 따른 구강건강이 삶의 질에 미치는 영향 -한국거주 노인과 미국거주 노인을 대상으로-

김영순 ( Young Soon Kim ),신경희 ( Kyoung Hee Shin ),정순희 ( Soon Hee Chung ),김연선 ( Yeon Sun Kim ),이배원 ( Bae Won Lee ),김윤신 ( Yoon Shin Kim ) 대한보건협회 2014 대한보건연구 Vol.40 No.1

연구목적 : 본 연구의 목적은 미국거주 노인과 한국 거주 노인의 삶의 질과 관련요인을 비교하고 삶의 질에 영향을 주는 요인을 규명하여, 우리나라 특성에 맞는 삶의 질을 향상시키는 중재프로그램 개발에 기초 자료로 제공하기 위함이다. 연구방법 : 미국에서 거주한 20년 이상의 한인 65세 이상 60명과, 한국거주 65세 이상 198명을 대상으로 하였다. 자발적 참여 동의한 분들을 대상으로 개별 면접조사 방법으로 조사 분석하였다. 연구결과 : 노인의 구강건강이 삶의 질에 미치는 영향은 경제수준에서 한국보다 미국에 거주하는 노인들이 더 높게 나타났으나 통계적 차이는 없었으나, 의료보장(t=-2.788, p<0.01), 치과처치도(t=-3.545, p<0.01), 예방교육(t=-4.807, p<0.01)은 한국거주 노인들이 더 높았다. 한국은 R2 0.512으로 회귀모형이 51.2%의 설명력을 보였으며, 미국의 경우 R2 0.523으로 52.3%의 설명력을 가지고 있었다. 결론 : 고령화에 접어든 노인의 삶의 질을 향상시키기 위한 프로그램 개발이 고려되어야 할 것으로 사료된다. Objectives: This study is aimed to provide basic data for the development of a decent intervention program which can enhance the quality of life customized to the circumstances of Korea after comparing quality-of-life factors between the aged in the U.S. and Korea and analyzing the matters which have an effect of their quality Methods: A personal interview has been performed against the following volunteer respondents; 60 Korean elderly people (aged 65 or older) who have been living in the U.S. for over two (2) decades, 198 senior citizens (65 or older) in Korea. Results: In terms of the effect of oral health on the quality of life, those living the U.S. were higher than Korean elderly people without statistical difference. In terms of medical security (t=-2.788, p<0.01), dental treatment (t=-3.545, p<0.01) and preventive education (t=-4.807, p<0.01), the elderly living Korea were higher. In terms of the R2 of regression, Korea was 0.512 (51.2%) while the U.S. was 0.523 (52.3%). Conclusion: It appears that it is necessary to develop a program which can improve seniors` quality of life.

풍압 분포를 적용한 등가정적풍하중 산출

김영순(Kim, Young-sun),임준택(Lim, Jun-Tack) 대한건축학회 2022 대한건축학회 학술발표대회 논문집 Vol.42 No.2

Engineering Sciences Data Unit 을 이용한 지표면조도 산정

김영순(Kim, Young-sun),주홍찬(Joo, Hong-Chan),공윤배(Kong, Yun-Bae),김종대(Kim, Jong-Dae) 대한건축학회 2021 대한건축학회 학술발표대회 논문집 Vol.41 No.1

The wind load is calculated by the design velocity pressure at the reference height H. Determination of the design velocity pressure is the first step of the design wind load. The factors that determine the design wind load are the basic wind speed, wind speed altitude distribution coefficient, topography coefficient, and the importance factor of the building. The basic wind speed is clearly presented in the KDS 41 10 15 : 2019. However, the determination of surface roughness is highly uncertain due to subjective judgment. For the objective Estimation of the terrain exposure category, which is a great influence on the design wind load, we propose a ESDU Data Item No.01008 which is quantitative calculation technique based on the boundary layer developed by ESDU(Engineering Sciences Data Unit). The terrain exposure category of the Metropolitan area was estimated by ESDU 01008 and compared with the KDS 41 10 15 : 2019

Wordsworth의 시에 나타난 자연 세계

김영순 ( Young Sun Kim ) 21세기영어영문학회 1998 영어영문학21 Vol.13 No.-

韓國産綠豆(Phaseolus aureus)의 成分에 關한 硏究

金榮順(Young-Soon Kim),韓龍鳳(Young-Bong Han),兪永鎭(Young-Jin Yoo),曺哉銑(Jae-Sun Jo) 한국식품과학회 1981 한국식품과학회지 Vol.13 No.2

몇가지 수확 전후 처리가 ‘신고’ ‘추황’ 배의 과피 흑변과 과실 품질에 미치는 영향

김영순(Young-Sun Kim),조정안(Jeong An Jo),김월수(Wol Soo Kim) 한국원예학회 2012 한국원예학회 학술발표요지 Vol.2012 No.5