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이동원,이상용 대한기계학회 1990 대한기계학회논문집 Vol.14 No.4
본 연구에서는 Fig.1과 같은 2상 자연순환 회로의 1차원 해석을 수행하고, 액 상의 과냉정도와 각 상 영역에서의 밸브 마찰저항이 순환유속에 미치는 영향을 살펴보 므로써 정적 불안정의 조건을 알아보는데 있다. 본 모델에서는 유한 길이를 갖는 증 발기와 응축기를 고려하였으며, 정적 불안정의 가능성을 해석적으로 보여주기 위해 간 단한 모델(point-heat-source/sink)도 함께 다루었다.
UNDERSTANDING SERVICE QUALITY: A MULTIDIMENSIONAL SCALING APPROACH
이동원,김연성 한국품질경영학회 2004 품질경영학회지 Vol.32 No.3
This paper purports to uncover the underlying attributes used by customers to gauge service quality. Data was collected by administering questionnaires to 50 respondents and then analyzed by using Multidimensional Scaling methodology. The findings indicate that there are two primary dimensions to service quality. This analysis helped determine us two alternatives to naming the dimensions: Experience properties of service and Price value of the service, or Responsiveness of service provider employees and Reliability of service providers.
초등사회과 교사전문성 담론의 수용과 좋은 수업안 쓰기의 조건
이동원 한국사회교과교육학회 2007 사회과교육연구 Vol.14 No.3
Acceptance for Discourse of Teacher Professionalism of Elementary Social Studies Instruction and Constructing of Reasonable Instruction Plan 》이 논문은 교사전문성 담론에서 교육과정과 수업 설계자로서 교사의 반성적 실천과 수업비평에 주목하고 이러한 논의를 초등사회과 현장에 보다 일반화시키기 위한 조건으로 좋은 수업안 쓰기의 중요성을 강조하고 있다. 수업에 있어 반성적 실천과 수업비평의 핵심은 수업에 담은 교사의 실천적 지식을 드러내는 것임과 아울러 드러낸 실천적 지식이 초등사회과교육 담론의 장에서 간주관성을 확보하는 것이다. 이러한 간주관성 확보는 수업실천 후의 수업비평은 물론 수업 계획 단계인 수업안 쓰기 과정에서 보다 사려 깊은 실천적 지식 드러내기를 통해 신뢰도가 높아질 수 있다. 본 논문은 초등사회과 수업안의 일반적인 형식과 내용에 대한 비판적 분석에 터해 수업자의 실천적 지식을 드러낼 좋은 초등사회과 수업안 쓰기의 조건과 사례를 제안 한다.
李東沅 한국교정학회 2001 矯正硏究 Vol.- No.13
In this paper, the interactive effects of major factors on juvenile delinquency were examined using multiple regression analysis. Major factors on juvenile delinquency are attachment to the parents, supervision of the parents, school achievement, strain caused by school achievement(achievement strain), strain caused by college(or job) entrance (entrance strain), the degree of contact with delinquent peers(delinquent contact) and the degree of bond with delinquent peers(delinquent bond). Interaction terms were created by multiplying each of the major factors. Juvenile delinquency was measured by three methods; the times of minor delinquency, the times of serious delinquency, and the seriousness measure of the committed delinquent behavior by seriousness scale. Three sets of regressions were then performed. First, minor delinquency measure was regressed on the seven variables of major factors, with and without the twelve interaction terms. Second, serious delinquency measure was regressed on the seven variables of major factors, with and without the twelve interaction terms. Third, seriousness measure was regressed on the seven variables of major factors, with and without the twelve interaction terms. The result from the regressions with the interaction terms shows that the twelve interaction terms significantly increase the amount of explained variance in both serious delinquency and seriousness degree but not in minor delinquency. The amount of explained variance in the serious delinquency is increased from 26.8% to 31.5%, or 17.6%. Explained variance in seriousness of delinquency is increased from 31.2% to 34.0%, or 9.0%. But increasement in minor delinquency is not significant, from 43.9% to 44.3%, only 0.9%. The five terms of twelve interaction terms have a significant effect on the serious delinquency or the seriousness of delinquency; 'attachment × entrance strain', 'attachment × delinquent contact', 'supervision × delinquent contact', 'school achievement × delinquent contact', and 'school achievement × delinquent bond'. Overall, the paper indicates that the addition of the interaction terms substantially improves the prediction of serious delinquency.
소구경 배관내 아이스슬러리의 유동형상 및 압력강하 특성에 관한 실험적 연구(1)
이동원,윤찬일,윤응상 대한설비공학회 2002 설비공학 논문집 Vol.14 No.5
To clarify the hydraulic characteristics of ice slurry which made from 6.5% ethylene glycol-water solution flowing through circular pipes of small diameter, experimental studies were performed. The flow pattern was observed and the pressure drop was measured in acrylic pipes with inner diameter of 24 mm. The results of flow visualization revealed that ice particles flowed along the top of pipes in the ranges of small ice fraction and low flow rate, while Ice particles diffused into the whole region of pipes flowed like a homogeneous flow for high flow rate and high ice fraction. An increase in frictional pressure drop was measured as the ice fraction increased in all pipes and unstable flow was observed for up-ward vertical pipe.