열충격 시험을 통한 MLCCs SAC305 무연 솔더 접합부의 IMCs 성장과 접합특성 저하에 관한 연구

정상원,강민수,전유재,김도석,신영의,Jung, Sang-Won,Kang, Min-Soo,Jeon, Yu-Jae,Kim, Do-Seok,Shin, Young-Eui 한국전기전자재료학회 2016 전기전자재료학회논문지 Vol.29 No.3

The bonding characteristics of MLCCs (multi layer ceramic capacitor, C1608) lead-free solder (SAC305) joints were evaluated through thermal shock test ($-40^{\circ}C{\sim}125^{\circ}C$, total 1,800 cycle). After the test, IMCs( intermetallic compounds) growth and cracks were verified, also shear strengths were measured for degradation of solder joints. In addition, The thermal stress distributions at solder joints were analyzed to compare the solder joints changes before and after according to thermal shock test by FEA (finite elements analysis). We considered the effects of IMCs growth at solder joints. As results, the bonding characteristics degradation was occurred according to initial crack, crack propagations and thermal stress concentration at solder-IMCs interface, when the IMCs grown to solder inside.

초등학교 교사들의 라이프스타일과 스포츠활동 유형 및 스포츠관심도의 유기적 관계 연구

정상원(Sang Won Jung) 한국사회체육학회 2007 한국사회체육학회지 Vol.0 No.31

This study was designed to establish actual relationship about life style and sport activity pattern and sport concerning level of elementary school teacher. In this study, questionnaire was used to investigate empirically various sport patterns and sport concerning level and life style of elementary school teacher. The 366 subjects were selected from elementary school in gyeongnam province, who were classified into demographic variable(sex, education career, physical education major, district) and asked to this questionnaire. The subjects were asked to various items belong to each variable. This questionnaire consisted of three-alternative choice pattern of nominal scale, ordinal scale, interval scale on the basis of A.I.O items and demographic variables. The 5% level of significance was used as the critical level for acception of the hypothesis in this study. On the basis of the results analyzed in this study, the conclusion could be drawn as follows. 1. The life style of teacher showed very low level about brand and nihility and showed very high level about self-control and affirm. 2. According to sex, the life style of women teacher showed very high level about fashion, health, confidence and the man teacher showed very high level about achievement, sport. 3. The most doing sport of element school teacher appeared to ball game sport and showed significant difference according to sex, education career, district. 4. The wanting sport of future appeared to lacket sport and swimming, the special point of this study was golf choice of teachers. The teacher selected more golf than other sport(dance, bowling, cycle...). 5. For early education of children, teachers selected swimming to first, dance to secondary. 6. The most teacher exercised 2-3times per week, showed significant difference according to sex, education career, physical education major. In the education career, the exercise frequency of the 6-10years teacher was very low and the high education career teacher was very high. 7. In the sport related monthly used fee, the most teacher appeared to the low of 50,000won. 8. The unexercise reason of appeared to order of time lack, lack of space and ficility, interest lack, fitness lack, money lack.

태권도인의 저변확대를 위한 뉴 마케팅 전략 탐색과 발전 방안모색

정상원(Sang Won Jung) 한국사회체육학회 2010 한국사회체육학회지 Vol.0 No.40

This study was designed to research the new Marketing Strategy and Development Plan for Popularization of Takendo People and to research efficiential management method according to presenting current problem point through literature review. On the basis of the results analyzed in this study, the conclusion could be drawn as follows. 1. The many problems was caused to rapid growth of past 20years in taekwondo environments. 2. This problems appeared to the many of taekwondo drill hall, just children consumer, old facility, simple program, entertainment lose, just win trait, many leader product. 3. The social change processing of taekwondo appeared to classic background, nationalism sport, glovalization, popularization. 4. The new marketing strategy appeared to the open of taekwondo drill hall management program competition for efficiential program provide and the important of advertisement and public relation strategy and taekwondo culture marketing and seesighting marketing and consumer relation marketing for taekwondo drill hall management activation. 5. The internal power and effort(new marketing) appeared to necessary factor for control of uncontrol eternal factor(educational system, childbirth rate down) in modern taekwondo environments.

한 초임교수의 쿠레레 탐구

정상원(Sang-Won Jung),윤홍주(Hong-Ju Yun) 한국내러티브교육학회 2020 내러티브와 교육연구 Vol.8 No.3

교육 현상을 바라보는 하나의 렌즈로서 교사의 삶은 많은 관심을 받아왔다. 그리고, 이러한 흐름 속에서 다양한 교사들의 삶이 탐구되어왔다. 이러한 관점에서 이 연구는 초임교수의 삶과 그것에 기반한 주관성을 쿠레레 방법을 통해 탐구해보고자 한다. 연구의 결과, 한 초임교수의 주관성은 열등감과 극복으로 구성되어 있었으며, 이러한 주제는 그의 삶의 전반에 걸친 교육적 경험을 통해 형성되어왔다. 이러한 주제들은 열등감 배우기와 외면하기, 열등감 대면하고 극복하기, 경계에서 서서 나의 가치를 증명하기, 열등감을 삶의 원천으로 삼기로 종합해 볼 수 있었다. 극복노력, 이러한 연구의 결과는 학교의 개선과 교육과정 연구의 개선에 의미 있는 시사점을 제공해 줄 수 있을 것이다. The life of a teacher has received a lot of attention as one of the lenses seen as an educational phenomenon. Under this attention, various forms of teachers lives have been studied. This study seeks to explore the life of a professor based on the subjective Currere method. Through examining the educational experiences of the professor s life, the subjectivity of the professor was established and consisted of the professor s inferiority complex and overcoming. These subjectivity could be summarized as learning and disregarding inferiority, confronting and overcoming inferiority, proving self-affirmation on the edge, and living with inferiority as a source of life. The results of this study may have implications for the improvement of schools and the curriculum research society.

시간-주파수 영역 해석법을 이용한 레이더 영상 품질 개선에 대한 연구

정상원(Sang-Won Jung),김경태(Kyung-Tae Kim) 한국전자파학회 2010 한국전자파학회논문지 Vol.21 No.1

본 논문에서는 흐려진 ISAR(Inverse Synthetic Aperture Radar) 영상의 회전 오차를 보상하기 위해 시간-주파수 영역 해석법을 이용한 회전 이동 보상(rotational motion compensation) 알고리즘을 제시한다. 실제의 비행 환경에서는 표적의 회전이나 가속 등의 움직임으로 인하여 도플러 주파수 천이가 시간에 따라 변하게 되고, 이에 따라 회전 오차(motion error)가 발생한다. 본 알고리즘으로 도플러 주파수 영역 방향으로 흐려진 ISAR 영상을 개선한다. 시뮬레이션 결과, 기동하는 표적에 회전 오차가 있을 경우에 시간-주파수 영역 해석법은 흐려진 레이더 영상의 품질을 개선하는데 효율적임을 알 수 있다. In this paper, an efficient algorithm is developed to perform target rotational motion compensation to achieve the clear inverse synthetic aperture radar(ISAR) image. The algorithm is based on a time-frequency technique. This algorithm provides an efficient method to resolve the blurring image caused by the time-varying behavior of the target scattering centers and leads to a well-focused ISAR image. Results demonstrate that the time-frequency techniques can improve the blurring ISAR image when an aircraft is in complex motion, such as maneuvering, rotation and acceleration.

남명 조식의 사상과 지, 덕, 체의 교육적 연계성 탐색

정상원(Jung, Sang-Won) 한국사회체육학회 2017 한국사회체육학회지 Vol.0 No.68

This study is designed to research the educational connection research of knowledge, virtue, physical and thought of Nammyeong(南冥) Jo Sik(曺植). On the basis of the results analyzed in this study, the conclusion could be drawn as follows. Firstly, Nammyeong taught practical life method through physical action. When the nation was in crisis, he taught war method and war skill to pupils and taught actual life pattern. Secondly, Nammyeong thought Gyeong[敬] and Yui[義] important with practical thought of people and thought practical doing more important than theoretical background screen for overcoming modern society crisis. Thirdly, Toegye(退溪) Yi Hwang(李滉) showed theoretical pattern for actual life application of Gyeong[敬]and Yui[義], whereas Nammyeong showed practical pattern for actual life application of Gyeong[敬] and Yui[義]. Fourthly, When Nammyeong taught pupils, he understand the gift of learners according to each one’s ability and aimed learner centered education. Fifthly, The relationship of self realization and existence theoretical problem related to physical activity is to develop the perfect people through cultivation of knowledge, virtue and body with Gyeong[敬]and Yui[義] of Nammyeong. Sixthly, the emphasis of sportsmanship in connection with Gyeong[敬]and Yui[義] is the foundation method for ethical problem solution of sport. The cultual variable to practice, drill and learning of Gyeong[敬]and Yui[義] are sport and physical education activity.

Development of Optimal Bus Dispatch Simulation for Greenhouse Gas Reduction

Sang Won Jung(정상원),Kyu-Cheol Cho(조규철) 한국컴퓨터정보학회 2022 韓國컴퓨터情報學會論文誌 Vol.27 No.1

학교체육과 지역사회체육 활성화를 위한 실태분석 및 연계 방안 모색

정상원(Sang Won Jung) 한국사회체육학회 2009 한국사회체육학회지 Vol.0 No.35

일반논문 : 질적 연구에서의 현상학적 글쓰기의 전략과 방법의 탐구

정상원 ( Sang Won Jung ),김영천 ( Young Chun Kim ) 인하대학교 교육연구소 2014 교육문화연구 Vol.20 No.3

국내에서 현상학적 연구의 의미와 가치에 대한 많은 논의들이 있어 왔음에도 불구하고 현상학적 글쓰기에 대한 논의가 현저히 부족한 것이 현실이다. 따라서 이 연구는 연구 현장에서 수집한 데이터를 연구 결과로 표현하는데 필요한 글쓰기 아이디어와 방법을 규명해 보고자 한다. 우리 모두가 알고 있듯이 질적 글쓰기는 질적 연구에서도 가장 힘든 과정 중의 하나로 여겨지고 있다. 이는 이를 위해 연구자들이 참고할 만한 특별한 단계나 전략이 부재하기 때문이다. 이러한 이유로 우리는 그러한 연구자들이 글쓰기를 시작할 때 적용할 수 있는 여덟 가지의 글쓰기 방법을 규명해 보았다. 이러한 여덟 가지 전략은 구체적으로 ``주제를 찾아라.``, ``주제를 연결하여라.``, ``일화를 제시하라.``, ``성찰을 드러내어라.``, ``구체적으로 기술하라.``, ``의미를 강조하라.``, ``생생함을 살려라.``, ``독자에게 말을 거는 어조를 유지하라.`` 로 축약될 수 있다. 이러한 글쓰기 방법은 자료의 분석에서 역시 유용하게 사용될 수 있는데 그것은 글쓰기가 분석을 통한 결과물과 주제의 발견과 밀접한 관련이 있기 때문이다. Even though there has been much discussion on the meaning and value of phenomenological research in qualtiative research in Korea, there has not been much effort and research on phenomenological writing in specific. Therefore, this research contributes to the in-depth theorization of this research orientation by indentifying the concrete ideas and techniques to transform the phenomenological data collected from the field into the research result. As we all recognize, the qualitative writing is considered as one of the most difficult processes in qualitative research since there are not specific step or strategeties for the researchers to follow. For this reason, we have developed eight techniques for the qualtiative researchers to apply for when they begin to write their field data. Learning these techniques are also meaningful for data analysis because writing is closely related to the anlaytic induction and theme development.

우리나라 학생들의 그림자 교육(shadow education)에서의 선행학습에 대한 질적 연구

정상원(Jung Sang Won),정정훈(Jung Jung Hoon) 학습자중심교과교육학회 2019 학습자중심교과교육연구 Vol.19 No.17

대다수의 한국 학생들은 사교육 영역에서 선행학습을 하고 있다. 이러한 선행학습은 학교에서의 학습을 질을 떨어뜨리는 요인으로 비판받고 있다. 이러한 비판은 심층적인 경험적 연구에 기초하지 않은 상황에서 제기되고 있다. 이에 이 연구는 질적연구방법을 통해 선행학습이라는 한국의 독특한 교육/학습 현상을 이해하고자 하였다. 연구 결과로서 이 연구는 사교육 기관에 따른 선행학습의 형태와 선행학습의 유형을 분석하였으며, 이러한 선행학습이 가지는 교육과정적 특징을 규명하였다. 나아가 선행학습이 학생들의 학습에 미치는 영향을 논의하였다. 이 연구는 사교육에서 이루어지는 선행학습의 실체를 보다 명료하게 밝힘으로써 한국 학생들의 학습과 그들의 학습문화를 이해하고 나아가 우리나라 교육 발전을 위한 시사점을 제공할 수 있을 것이다. Most Korean students participate in preview learning in shadow education space. Preview learning has been attributed to damaging the quality of students’ learning in school classes. Yet, such criticism is not grounded by in-depth understanding of the phenomenon and students’ experience in it. Thus, this study is to understand preview learning through qualitative research methods. As a result, this study sought to ascertain the forms of preview learning at different shadow education types and discusses the curricular characteristics of the forms of preview learning. Furthermore, this study discusses the effects of preview learning on individual students’ learning. Additionally, this study offers implications for educational development in South Korea and understanding students’ learning culture.