정적연소기에서 분위기 압력에 따른 Diesel-DME 혼합연료의 분무 특성에 관한 연구

양지웅 ( Ji Woong Yang ),이세준 ( Se Jun Lee ),임옥택 ( Ock Taeck Lim ) 한국분무공학회 2012 한국분무공학회지 Vol.17 No.4

The aim of this study was to compare the spray characteristics of a typical fuel (100% diesel, DME) and diesel-DME blended fuel in a constant volume combustion chamber (CVCC). The typical fuel (100% diesel, DME) and diesel-DME blended fuel spray characteristics were investigated at various ambient pressures (pressurized nitrogen) and fuel injection pressures using a common rail fuel injection system when the fuel mixture ratio was varied. The fuel injection quantity and spray characteristics were measured including spray shape, penetration length, and spray angle. Common types of injectors were used.

부모와의 애착 유형과 학업 자아 개념 간의 관계

양지웅 ( Ji Woong Yang ) 인하대학교 교육연구소 2015 교육문화연구 Vol.21 No.2

The purpose of this study was to explore the relationship between the two psychological constructs, patterns of relating to both parents and academic self-concept, and academic achievement. This study was designed to examine the differences between academically high-achieving college students and academically at-risk college students in patterns of relating and academic self-concept. One hundred sixty one college students participated in this study. Of the 161 participants, 90 were recruited from an academic support program and 71 were recruited from an honors college. Results showed that there are significant correlations between patterns of relating and academic self-concept. Specifically, fearful and distant patterns of relating to mother are negatively correlated with academic self-concept. A dependent pattern of relating to father was negatively correlated with academic self-concept. Also, the results of this study indicated that there are differences between academically high-achieving college students and academically at-risk college students in patterns of relating and academic self-concept. The implications of this study, insights of Korean context, limitations, and suggestions for future research are discussed.

R프로그래밍을 활용한 고속도로 검지기와 램프 거리에 따른 속도변화에 관한 연구

양지웅(Yang, Ji Woong),김진태(Kim, Jin Tae) 대한토목학회 2018 대한토목학회 학술대회 Vol.2018 No.10

운전자 이동행동 및 시선에 따른 교통사고 위험도 예측

양지웅(Ji-Woong Yang),정현진(Hyeon-Jin Jung),이한진(Han-Jin Lee),김태욱(Tae-Wook Kim),홍정희(Ellen J. Hong) 한국컴퓨터정보학회 2024 한국컴퓨터정보학회논문지 Vol.29 No.8

In this paper, we propose a new approach by analyzing driver behavior and gaze changes within the vehicle in real-time to assess and predict the risk of traffic accidents. Utilizing data analysis and machine learning algorithms, this research precisely measures drivers abnormal behaviors and gaze movement patterns in real-time, and aggregates these into an overall Risk Score to evaluate the potential for traffic accidents. This research underscores the significance of internal factors, previously unexplored, providing a novel perspective in the field of traffic safety research. Such an innovative approach suggests the feasibility of developing real-time predictive models for traffic accident prevention and safety enhancement, expected to offer critical foundational data for future traffic accident prevention strategies and policy formulation.

Diesel-DME 혼합연료의 분무 및 엔진 연소특성에 관한 연구

양지웅 ( Ji Woong Yang ),정채훈 ( Jae Hoon Jung ),임옥택 ( Ock Taeck Lim ) 한국분무공학회 2013 한국분무공학회지 Vol.18 No.2

This purpose of this study was compared the spray, combustion and emissions (NOx, CO, HC, smoke) characteristics of a typical fuel (100% Diesel, DME) and Diesel-DME blended fuel in a Constant Volume Chamber (CVC) and a single-cyl-inder DI diesel engine. Spray characteristics were investigated under various ambient and fuel injection pressures when the Diesel-DME blended ration is varied. The parameters of spray sturdy were spray shape, penetration length, and spray angle. Common types of injectors having seven holes and made by Bosch were used. As of use, the typical fuel(100%Diesel, DME) and the blended fuel by mixture ratio 955, 90:10 (Diesel: DME) were used. The injection pressure was fixed by 70.1MPa, when the ambient pressure was varied 0.1, 2.6 and 5.1 MPa. The combustion experiments was conducted with single cylinder engine equipped with common rail injection system injection pressure is 70MPa. The amount of injected fuels is adjusted to obtain the fixed input calorie value as 972.2J/cycle in order to compare with the fuel conditions.

인간이해 : 비전통적 진로를 선택한 남성의 경험에 대한 내러티브 탐구

양지웅 ( Ji Woong Yang ) 서강대학교 학생생활상담연구소 2015 인간이해 Vol.36 No.1

The purpose of this study was to explore the experiences of men who made non-traditional career choices. This study was conducted using a narrative analysis with three male workers from three occupations: nursing, kindergarten teacher, nutrition teacher. Based on analyses, four categories of non-traditional career choices were derived. Research texts were then constructed based on those categories. The four categories derived from the research were the experiences of the non-traditional career entry, the experiences of college days when men were in the minority, the experiences of men in non-traditional occupations, and attitude and plans on one`s career outlook. Implications of the findings, suggestions for college career counseling, limitations, and directions for future research were discussed.

청소년 자아정체감 지위의 성별 간 및 학년 간 비교

양지웅 ( Ji Woong Yang ) 인하대학교 교육연구소 2014 교육문화연구 Vol.20 No.2

The purpose of this study was to examine adolescences` gender and school year differences in ego-identity status. This research used the concepts of Crisis and Commitment in occupation part and value part, which were proposed by Marcia (1966). The study samples were composed of 624 students from 5 high schools and 2 universities in Seoul. The research instrument was ego-identity status questionnaire that used by Park Ah Chung (1985). The data were analyzed by independent samples T-test and one-way analysis of variance (ANOVA). According to the results of this study, there were significant differences between male and female in ego-identity status. Also, the results of this study indicated that there were significant differences by school year in ego-identity status. The implications of this study, limitations, and suggestions for future research were discussed.

초기 홀로세 대기 중 메탄 농도의 천 년 주기 변동성

양지웅(Ji-Woong Yang),안진호(Jinho Ahn),류영준(Yeongjun Ryu),Edward Brook 대한지질학회 2016 대한지질학회 학술대회 Vol.2016 No.10

도시부도로 교통사고 다발지점 원인진단 연구

양지웅(YANG, Ji Woong),김진태(KIM, Jin Tae) 대한교통학회 2018 대한교통학회 학술대회지 Vol.78 No.-

교통사고 문제를 극복하기 위해 권역별 특성을 반영한 교통안전 정책수립이 요구된다. 본 연구는 2014년, 2015년, 2016년 서울시 강북구, 동대문구, 중랑구 교통사고 다발지점 기반 구(區) 단위 교통안전 정책 개선방안을 제안한다. 상기 권역에서 수집된 (1) 교통사고 발생 유형, (2) 발생지점, (3) 사상자 수 규모를 기반으로 각 구 단위 교통사고 발생 원인을 분석하였으며, 이를 통하여 개별 구 단위 (1) 교통신호 운영, (2) 도로안전시설 확보, (3) 교통안전시설 마련, (4) 도로 기하구조 개선을 위한 정책수립 방향을 제안한다. 본 연구는 자치단체가 수립하는 교통안전 정책을 현장 교통사고 발생 원인과 연계함에 의의가 있다.

중학교 입시에 응시한 자녀를 둔 어머니의 진로지도 경험에 관한 현상학적 연구

양지희(Yang, Ji Hee),양지웅(Yang, Ji Woong) 계명대학교 사회과학연구소 2020 한국사회과학연구 Vol.39 No.3

본 연구는 중학교 입시에 응시한 초등학생 자녀를 둔 어머니의 진로지도 경험을 깊이 있게 탐색하는 데 그 목적이 있다. 이를 위해 중학교 입시를 치르는 자녀와 함께 고사장을 찾은 어머니들 중에 자발적으로 연구 참여의사를 밝힌 5명을 심층 면담하여 자녀의 진로지도 경험에 대한 내용을 수집하였다. 수집한 자료의 분석은 Giorgi의 현상학적 방법을 사용하였는데 이 과정에서 의미단위를 추출해 내어 구성요소를 도출하였고 어머니의 진로지도 경험에 대한 본질과 의미를 찾기 위해 변형된 의미단위들을 구조로 통합하였다. 연구결과 25개의 의미단위와 12개의 하위범주, 6개의 상위범주가 도출되었다. 6개의 상위범주는 ‘자녀의 선택을 지지해 주고 싶지만 자녀가 아직 어리다고 생각함’, ‘더 나은 진로를 위해서 진로지도가 필요함’, ‘아이가 진로와 관련된 경험을 통해 성장해 가기를 기대함’, ‘결국엔 진로를 위해서 공부를 잘해야 한다고 생각함’, ‘진로에 있어서 자녀가 어머니의 뜻을 따라주기를 원함’, ‘진로에 있어서 자녀를 통제할 수 있을 때 통제함’으로 나타났다. 논의에서는 본 연구의 결과의 시사점과 제한점 및 후속 연구를 위한 제언을 하였다. This study was This study aimed at examining in detail the career guidance experiences of mothers of children who took an entrance examination for middle school. To achieve this aim, in-depth interviews were conducted targeting 5 mothers who had voluntarily participated in the study among mothers waiting for their children who were going to take an entrance examination for middle school. The collected data were analyzed by using Giorgi’ phenomenological research method. As a result of analysis, a total of 25 meaning units, 12 corresponding subfactors, and 6 factors were finally derived. These 6 factors were ‘Mothers think that their children are not mature enough, though they want to support children’s decisions,’ ‘Children need career guidance for better career,’ ‘Mothers want their children to grow through experiences related to career,’ ‘Mothers think that better academic performance is, after all, needed for career,’ ‘Mothers want children to respect their decision on their career,’ and ‘Mothers control their children, if possible, with regard to their career.’ Based on the results of this study, the implications of career counseling and guidance and suggestions for follow-up study were discussed.