촉매 및 반응공학 Poster 발표 : Ru - Carbonyls 로 부터 제조된 Ru 담지 촉매에서의 벤젠수소화반응

이동조,이태진 ( Dong Jo Lee,Tae Jin Lee ) 한국화학공학회 1993 추계학술발표회 Vol.- No.-

한국 열린교육의 효율적 실천 방안

이동조 한국교육학회 부산지회 1996 釜山敎育學硏究 Vol.9 No.2

Even though ten years has passed since open education had been introduced in korea, our open education is still in infant stage, and inappropriate open education which imitating the surface or the partial feature of open education is unfolding. Open education can not be effectively implemented only when invidualization of teaching and personalization of study are introduced to our teaching-learning phases. The purpose of this study was to search for the direction of open education in Korea. Specifically, this study reviewed the characteristics and background of open education, examined problems which our open education practices are facing, and suggested guidelines for our future open education practices. The conclusion derived from this study are as follows. Firstly, as for the goals for Open education, we should bring about changes in the teacher's conception of open education so that high order cognitive goals have the highest priority and affective goals have the second priority. In this way the failure of open education in other courties, which was blamed for the loweredness of children's basic skills does not have to be repeated in Korea. Secondly, in teaching-learning situations, learners instead of teachers should be in the center of the classroom processes so that learners themselves could assume the responsibility for their learning. To do this, multisequences of contents and varied instructional methods as well as flexible groupings should be adopted in the classrooms. Thirdly, as for the administrative aspects, teachers should be provided with many on-the-job training courses to acquire update teaching skills including text analysis and evaluation procedures needed to implement open education. Teachers should also be provided with abundant instructional materials as well as equipments and facilities in order to adopt flexible instructional sequences, individualized instructions, and varied groupings.

이동평균선의 교차매매전략을 이용한 재고관리 : H사의 사례연구

오승희,조은현,이동형 국제차세대융합기술학회 2021 차세대융합기술학회논문지 Vol.5 No.2

최근 제조업체는 급변하는 경영상황에 능동적으로 대응하고 제품군의 지속적인 경쟁력 확보를 위해 적정 한 생산계획을 수립하여 운영하고 있다. 특히 공급계획을 수립하고 운영 관리하는 측면에서 재고관리는 기업의 생 산관리 수준을 알 수 있는 핵심요소이다. 따라서 제조업체의 수요변화를 고려한 탄력적 재고관리는 고객이 요구하 는 납기를 준수하고 적정한 재고보유를 통하여 재고비용의 감소, 나아가 기업의 수익증대를 가져오게 한다. 그러 나 대다수의 국내 중소제조업체는 다품종 소량생산 형태로 고객의 주문이 비정기적이고 변동폭이 심한 경우가 많 아 수요예측에 어려움을 겪고 있다. 이에 본 논문에서는 이동평균법으로 도출한 장단기 이동평균선의 교차매매전 략을 이용하여 차량 보수용부품의 수요추세를 파악하고 적정 재고수준을 알기 쉽게 도출하는 H사의 사례연구를 결과를 제시하고자 한다. 여기에서 제안된 방법은 성수기와 비수기의 수요변동이 큰 기업들의 재고관리비용 절감 에 크게 기여할 것으로 기대한다. Recently, manufacturers have established and operated appropriate production plans to actively respond to rapidly changing business conditions and to secure continuous competitiveness of product lines. In particular, in terms of establishing and operating a supply plan, inventory management is a key factor in understanding a company's level of production management. Therefore, flexible inventory management in consideration of changes in manufacturers' demands can lead to a reduction in inventory costs and an increase in corporate profits through proper inventory retention and compliance with delivery times required by customers. However, most small and medium-sized manufacturing companies in Korea are having difficulty in forecasting demand as customers' orders are irregular and fluctuate in the form of small-scale production of a variety of products. Therefore, in this study, we propose an inventory management technique of Company H that grasps the demand trend of vehicle maintenance parts and easily derives the appropriate inventory level by using the cross-selling strategy of moving average lines derived by the moving average method.

자발성 경수내 출혈 1례

이동조,윤영진,문덕홍,사은희,황선출,홍성욱 대한신경과학회 1995 대한신경과학회지 Vol.13 No.2

부록 : 제 4 회 ( 1987 학년도 ) 졸업생 - 졸업논문요약 / 구운몽에 나타난 「 몽 」 사상 - 구조론적 측면에서 -

이동조 새얼어문학회 1988 새얼語文論集 Vol.4 No.-

연료 온도 변화에 따른 평판 충돌 액적의 거동에 관한 연구

이동조(Dong Jo Lee),김호영(Ho Yong Kim),정진택(Jin Taek Chung) 한국연소학회 2003 KOSCOSYMPOSIUM논문집 Vol.- No.-

Ruthenium Carbonyl로 부터 제조된 Ru 담지촉매에서의 벤젠수소화반응

이태진,장원철,이동조 嶺南大學校 工業技術硏究所 1993 工業技術硏究所論文集 Vol.21 No.2

The ion exchange ?? and the carbonyl complex impregnation ?? method were employed to prepare supported Ru catalysts encaged in the pores of X zeolites (NaX, Na-cluster X, KX), and their catalytic behaviors for benzene hydrogenation were compared. The benzene hydrogenation was performed with a micro reactor operating at atmospheric pressure, temperature of 50-250℃, and hydrogen/benzene ratio of 5.33. The activity of carbonyl derived catalysts was significantly higher that of ion exchanged catalysts. Irrespective of preparation method, the activity decreased in the catalyst sequence of Ru/Na-cluster X>Ru/NaX>V/KX, while the tendency to exhibit deactivation decreased in the sequence of Ru/NaX>Ru/Na-cluster X> Ru/KX. The difference in activity and deactivation pattern was attributed to the surface acid and base property of zeolites. The catalytic behaviors of benzene hydrogenation over Pt/Nylon-66, pt/C [K₂PtCl₄], Ru/Nylon-66 and ?? were also investigated. Pt/Nylon-66 produced substantial amounts of the in termediate, cyclohexene. The activity of all the samples showed a temperature-dependent maximum, but the temperature of activity maximum of supported Ru catalysts lower than that of supported Pt catalysts.

액체 연료 액적들의 배열 및 크기차이가 증발 및 연소특성에 미치는 영향

이동조(Dong Jo Lee),김호영(Ho Young Kim),조종표(Chong Pyo Cho),윤석구(Suk Goo Yoon) 한국연소학회 2007 KOSCOSYMPOSIUM논문집 Vol.- No.-

The burning characteristics of interacting droplets with internal circulation in a convective flow are numerically investigated at various particle arrangement and size difference. In this simulation some conditions are fixed, surround gas temperature is 1250K, pressure is 10 atm and drolet's initial temperature is 300K. The transient combustion of arranged droplets, the fixed droplet distances of 4 radii to 20 radii horizontally, is studied. And the range of size of droplet is 75㎛ to 100㎛. The results obtained from the present numerical analysis reveal that the transient flame configuration and retardation of droplet internal motion with the horizontal spacing substantially influence lifetime of interacting droplets. At a Reynolds number 10, lifetime of the three droplets with decreasing horizontal droplet spacing increases monotonically. But when droplet spacing decreases further to 4radii, Lifetime of interacting droplets are increase. So Lifetime of interacting droplets exhibits a strong dependence on the horizontal droplet spacing and size difference. It can be investigated well with these conditions to that of single burning droplet.

대향류 버너를 이용한 DME/LPG 혼합연료의 연소 및 NOx생성 특성에 관한 연구

이동조(Dong Jo Lee),이재성(Jae Sung Lee),김호영(Ho Yong Kim),전철균(Chul Kyeun Chun),임의순(Eui-Soon Yim) 한국연소학회 2009 KOSCOSYMPOSIUM논문집 Vol.- No.38

Combustion and NOx emission characteristics of LPG, DME and LPG/DME blended fuel were experimentally investigated on the counterflow non-premixed flame. In order to understand the combustion and NOx emission characteristics of LPG, DME and LPG/DME blended fuel in the counterflow diffusion flame, the photo of the shape and location of flame, the flame temperature, NOx concentration and OH radical were measured. And types of LPG and DME content ratio varied in the from butane100% to butane75%+propane25% and from 0 to 100mole%, respectively. These results indicated that the Combustion and NOx emission characteristics of DME were different with those of LPG. As the DME content ratio increased, the location of flame was shifted toward the air nozzle side and the flame thickness increased. Moreover as the DME content ratio increased, the maximum temperature of flame increased. However NOx concentration and profile of OH radical decreased with increase of DME content ratio.

재가노인의 자아존중감이 삶의 질에 미치는 영향: 그릿(GRIT)의 매개효과 검증

이동조(Lee, Dong-Jo),양영애(Yang, Yeong-Ae) 대한고령친화산업학회 2021 대한고령친화산업학회지 Vol.13 No.2

연구목적 : 재가노인의 자아존중감이 삶의 질에 미치는 영향을 파악하며, 이들 영향 관계에서 그릿의 매개효과를 검증하는 것이다. 연구방법 : 재가노인 서비스지원센터의 서비스를 이용하는 재가노인152명을 대상으로 실시하였다. 연구대상자의 자아존중감, 그릿(흥미일관성, 노력지속성), 삶의 질을 측정하기 위해 로젠버그(Rosenberg, 1965)가 개발한 자아존중감 척도(Self-Esteem Scale)를 전병제(1974)가 번안한 척도, 이수란(2014)의 척도, 세계보건기구가 개발한 WHOQOL-100을 기초로 Min 등이 수정한 한국판 WHOQOL-BREF를 사용하여 측정하였다. 연구결과 : 첫째, 재가노인의 자아존중감은 삶의 질에 정적 유의한 영향을 미치고 있었다. 둘째, 재가노인의 자아존중감은 그릿의 흥미일관성에 유의한 영향이 나타나지 않았으며, 노력지속성에는 정적으로 통계적 유의수준을 파악하였다. 셋째, 재가노인의 그릿의 흥미일관성은 삶의 질에 유의한 영향이 없었으며, 노력지속성은 삶의 질에 정적인 유의미한 영향을 확인하였다. 넷째, 자아존중감이 삶의 질에 미치는 영향 관계에서 그릿의 노력지속성은 정적인 부분매개효과를 나타냈다. 결론 : 재가노인의 자아존중감과 그릿의 노력지속성은 삶의 질을 향상시키는 중요한 변인으로서 사회복지 서비스의 체계적인 개입과 프로그램 개발이 필요하다. Objective : The purpose of this study is to understand the effect of self-esteem on the quality of life of the elderly at home, and to verify the mediating effect of grit in these influence relationships. Methods : This study was conducted for 152 home-based seniors who used the services of the Home Elderly Service Support Center. A scale adapted by Jeon Byeong-je (1974) from the Self-Esteem Scale developed by Rosenberg (1965) to measure the subjects self-esteem, grit (consistency in interest, persistence in effort), and quality of life. , and the Korean version of the WHOQOLBREF modified by Min et al. based on the scale of , Suran Lee (2014) and the WHOQOL-100 developed by the World Health Organization. Results : First, the self-esteem of the elderly at home had a positive and significant effect on the quality of life. Second, the self-esteem of the at-home elderly did not have a significant effect on the interest consistency of grit, and the statistical significance level was identified statically on the persistence of effort. Third, the interest consistency of grit did not have a significant effect on the quality of life of the elderly at home, and it was confirmed that the persistence of effort had a positive and significant effect on the quality of life. Fourth, in the relationship between self-esteem and quality of life, grit s persistence in effort showed a positive partial mediating effect. Conclusion : The self-esteem of the home elderly and the persistence of grit are important variables to improve the quality of life, and systematic intervention and program development of social welfare services are required.