퍼지 Simulation 방법에 의한 주암호의 수질모델링

이용운(Yong Woon Lee),황윤애(Yun Ae Hwang),이성우(Sung Woo Lee),정선용(Seon Yong Chung),최정욱(Jung Wook Choi) 大韓環境工學會 2000 대한환경공학회지 Vol.22 No.3

퍼지 의사결정법에 의한 주암호 수질관리 전략 평가

이용운(Yong Woon Lee),황윤애(Yun Ae Hwang),이성우(Sung Woo Lee),이병희(Byong Hi Lee),최정욱(Jung Wook Choi) 大韓環境工學會 2000 대한환경공학회지 Vol.22 No.4

朝鮮 後期 華嚴七處九會圖와 蓮華藏世界圖의 圖像 硏究

이용운(Lee Yong-yun) 한국미술사학회 2002 美術史學硏究 Vol.- No.233·234

This paper is studies on the resource and the icons of 〈The Painting of the Seven Locations and Nine Assemblies of Avatamska (華嚴七處九會圖) and 〈The Lotus world Paintings of Dharmadhata (蓮華藏世界圖)〉. There are a only few articles introducing the structure of the former, yet on the latter the icon and the character are not concretely analyzed. So. the resource and the structure of both paintings are revealed here as a basic research. Both Buddhist paintings are based on 80 Avatamska sutra (80華嚴經). 〈The Painting of the Seven Locations and Nine Assemblies of Avatamska〉 abstracts Avatamska sutra to the painting of the seven locations and nine assemblies in a picture. A few remaining paintings drawn in the latter 18th century and early 19th century remained include the paintings of Songgwangsa Temple (宋廣寺, 1770). Seonamsa Temple (仙巖寺. 1780). Ssangyesa Temple (雙磎寺, 1790) and Tongdosa Temple (通渡寺. 1810). 〈The Lotus world Paintings of Dharmadhata〉 represents the paradise of Virocana described in the work of the Flower Bank World (華藏世界品), one of the 39 works (品) of 80 Avatamska sutra. The world of a lotus flower had been painted as a part of the assemblies in 〈The Painting of the Seven Locations and Nine Assemblies of Avatamska〉, and in the latter half of the 19th century it was painted as an independent subject in a picture: 〈Pirowhajangjido (毘盧華藏之圖)〉(Seoul Historical Museum, 19th century), 〈The Lotus world Paintings of Dharmadhata〉(Yongmunsa Temple, 1896) and 〈Hwajangchalhaedo (華藏刹海圖)〉 (Tongdosa Temple, 1899). Producing the Buddhist paintings related to Avatamska sutra from the latter period of Joseon was due to the prevalence of Avatamska ideas. Avatamska sutra was a final subject for learned monks of education institute by Avatamska philosopher and they published the books on the ideas. Based on this background, the 〈The Painting of the Seven Locations and Nine Assemblies of Avatamska〉 and 〈The Lotus world Paintings of Dharmadhata〉 were produced to explain the content" of the Avatamska sutra more dearly and easily. The preaching with Rocana as a head of a Buddhist lecture meeting is the most important icon in 〈The Painting of the Seven Locations and Nine Assemblies of Avatamska〉. Rocana in vitarka mudra raising his hands over the shoulders puts crown and ornaments as a form of Bodhisattva. 〈Nosanabulhoedo (盧舍那佛會圖)〉(1022) of Feilai-feng, Hangchou in China is the earliest example of Rocana in Bodhisattva style. In Korea, in the latter half of the 14th century, it appeared in 〈Frontispiece of Hwaeomgyeongso (華嚴經疏變相圖), 〈Frontispiece of Brahmajala Sutra (梵網經變相圖)〉, and in 〈Frontispiece of Dharani Sutra (圓覺經變相圖). The icon of 〈Frontispiece of Hwaeomgyeongso〉 at Yeongtongsa Temple (靈通寺, 1372) is directly connected to the icon of 〈The Painting of the Seven Locations and Nine Assemblies of Avatamska〉. Rocana in the center is attended by Manjusri (文殊) and Samanthabhadra (普賢) on both sides and guarded by 39 Guardians (神衆) that appeared at the 1st Assembly at the Place of Truth (菩提道場會). In Joseon, 〈Frontispiece of Hwaeomgyeongso) is produced continuously at temples; Gwijinsa Temple (歸眞寺, 1556), Songgwangsa Temple (松廣寺, 1635) and Yeonggaksa Temple (靈覺寺, 1686). As a representative example. with the one from Songgwangsa Temple, there was an special effort to contain the whole contents of Avatamska sutra. The painting is described the Bodhisattva concretely from The Wonderful Adornments of the Leader of the Worlds (世主妙嚴品) and the Appearance of the Buddha (如來出現品) in the 1st Assembly and added Manjusri and Samanthabhadra, the 10 Buddhist Disciples and Sudhana from the 9th Jetavana Assembly (逝多林會). The Eight Scenes from the Life of Buddha (八相圖)' is also an important icon of 〈The Painting of the Seven Locations and Nine Assemblies of Avatamska〉, The preaching assembly centered Rocana from 'the Buddhist Sermon in the Deer Park (鹿苑傳法相)' , which is one of 'The Eight Scenes' , appears in the painting. The scene is recorded as 'the Buddhist Sermon Avatamsk

개인변인에 따른 교사들의 다차원적 인식론적 신념과 교수-학습관 간의 관계

김경연(Kim Kyung-Yun),이용운(Lee Yong-Wun) 고려대학교 교육문제연구소 2006 敎育問題硏究 Vol.0 No.26

  본 연구는 우리나라 중ㆍ고등학교 교사들의 인식론적 신념을 다면적 차원에서 접근하여, 인식론적 신념의 차원이 성, 담당교과, 교직경력 등과 같은 교사의 개인 변인에 따라 차이가 있는 지를 검증해 보고, 나아가 인식론적 신념과 교수-학습관 간에 관계를 밝히고자 하는 데에 그 목적이 있다. 이 목적을 위해 서울 일부지역 중ㆍ고등학교 교사 163명(남 55명, 여 108명)을 대상으로 “타고난/고정된 능력”, “학습노력/과정”, “권위/전문가 지식”, “확실한 지식”의 4개 차원에 대한 31문항의 인식론적 신념검사와 “전통적 교수-학습관”과 “구성주의 교수-학습관”을 묻는 44문항의 교수-학습관 검사를 실시하여, 다음과 같은 결과를 얻었다..<BR>  첫째, 성과 담당교과에 따른 인식론적 신념의 차이는 없었지만, 경력에 따른 차이가 확인되었다. 10년 이하 교사와 11년-20년 교사 간에는 “학습노력/과정”에, 20년 이하 교사들과 21년 이상 된 교사 간에는 “확실한 지식”에 유의미한 차이가 있는 것으로 나타났다.<BR>  둘째, 인식론적 신념과 교수-학습관 간의 유의미한 상관을 발견할 수 있었다. 전통적 교수-학습관은 4 차원 모두와 상관이 있는 것으로, 구성주의적 교수-학습관은 “학습노력/과정”과 강한 정적 상관이, “권위/전문가 지식”과 강한 부적 상관이 있는 것으로 나타났다.<BR>  셋째, 인식론적 신념의 4차원은“전통적 교수-학습관에 대해 33.5%의 설명력이, “학습노력/과정”과 “권위/전문가 지식”은 구성주의 교수-학습관에 16.7%의 설명력이 있는 것으로 나타났다.<BR>  이 연구결과는 앞으로 교사들에게 필요한 교수-학습 모형을 개발하고, 교수의 질을 향상시키고자 하는 교수 연수프로그램의 계획하고 설계하는 데 시사하는 바가 크다고 본다.   The purpose of this study is to examine Korean secondary level teachers" epistemological beliefs using a multidimensional paradigm; to test the differences in the beliefs depending on gender, subject area, and teaching career; to investigate the relationships between the teachers" epistemological beliefs and the beliefs about teaching and learning. In order to achieve this purpose, this study administered a translated version of "Epistemological Belief Questionnaire" and a teaching and learning belief questionnaire to the secondary level teachers (N=163).<BR>  The results can be summarized as the follows. First, no statistically significant differences were found depending on subject area but on teaching career. The teachers of less than 10 years teaching career were more likely to believe in "Learning Effort/Process" and less likely to believe in "Certainty Knowledge" than those of more than 11 years. Second, traditional teaching and learning belief had correlations with "Certainty Knowledge", "Innate/Fixed Ability", "Authority/Expert Knowledge" and "Learning Effort/Process". In addition, constructivist teaching and learning belief had positive correlations with "Learning Effort/Process," and negative correlations with "Authority/Expert Knowledge". Finally, the four epistemological beliefs dimensions could predict traditional teaching and learning belief while the two dimensions could predict constructivist teaching and learning belief. Together with these results and assumptions, several theoretical and educational implications and suggestions for the future research were discussed in this study.

합성섬유로 보강된 시멘트-점토-모래 혼합토의 휨성능 평가에 관한 연구

정두회(Du-Hwoe Jung),조백순(Baik-Soon Cho),이용운(Yong-Yun Lee) 한국지반신소재학회 2017 한국지반신소재학회 논문집 Vol.16 No.1

시멘트-점토-모래 혼합토의 휨성능 개선을 위하여 합성섬유를 이용해서 보강한 섬유보강토에 대한 휨성능 시험을 실시하였다. 시멘트, 모래, 그리고 섬유가 혼합토의 휨성능에 미치는 영향을 평가하기 위하여 시멘트량(15%, 20%, 25%), 모래함량(0%, 10%, 20%), 섬유의 종류(PP, PVA)와 길이(6mm, 12mm), 섬유혼입량(0.5%, 1.0%, 1.5%)을 조합하여 시험편을 제작하였다. 본 연구의 결과 시멘트 개량토를 섬유를 이용해서 보강하면 휨강도와 휨인성이 개선되는 효과를 확인할 수 있었다. 휨성능 시험 결과에 대한 다중선형회귀분석 결과 시멘트량과 모래함량은 휨강도에 영향을 미치는 주요 인자인 것으로 나타났고, 반면에 섬유혼입량은 균열발생 후의 거동에 영향을 미치는 주요 인자인 것으로 나타났다. The effects of synthetic fibers, cement content, and sand content on the flexural performance of cement-clay-sand mixtures has been evaluated through a flexural performance test with a third-point loading. Beam specimens for the flexural performance test were fabricated with a various amount of cement, sand, and synthetic fibers. Two types of fibers, PVA (Polyvinyl alcohol) and PP (Polypropylene) fibers, were employed in the test. The test results have exhibited that the factors considered in the test have significant effects on the flexural performance of the mixtures in several aspects. The flexural performance of the mixtures has been improved if the mixtures were reinforced with synthetic fibers. The flexural strength and the flexural toughness of the mixtures has been increased as the fiber content was increased. A multiple linear regression analysis has been performed to evaluate the effect of fiber content, cement dosage, and sand content on the flexural performance of the mixtures in terms of flexural strength and flexural toughness. Cement content and sand content were estimated as important factors to have an influence on the first-crack strength and the peak strength whereas the fiber content has the most significant influence on the post-crack behavior. The first-crack strength and the ultimate strength were increased as the cement content and the sand content were increased. As the fiber content was increased, the flexural toughness was increased.

철전극 전기분해공정을 이용한 하수의 고도처리 연구

김민규 ( Min Kyu Kim ),송영일 ( Young Il Song ),이성기 ( Seong Key Lee ),이용운 ( Yong Yun Lee ),최병순 ( Byung Soon Choi ),이윤희 ( Yun Hee Lee ) 한국수처리학회 2015 한국수처리학회지 Vol.23 No.6

This study was applied to advanced wastewater treatment process using the iron electrode in the electrolysis process, an electrode was provided a caterpillar type device in order to prevent contamination of the electrode. Research such as the removal rate was investigated in accordance with the current change and the electrode distance, the influent effective according to the seasonal variations. Results are as follows. Influent concentration was examined to be larger than the effect of the rainfall seasonal variations. Precipitation concentration is increased initially but gradually decreased. When the rain did not make indicate a higher concentration showed a regularly pattern. The higher the voltage has caused a high current, the electrode distance is 1.0 m occurred at a voltage higher than 0.7 m. Results BOD and T-N and given a change in the current corresponding to the electrode distance in the electrolytic process, effluent concentrations were lower when a higher current supply and near the electrode distance. BOD, COD, SS, T-N showed the highest removal rate in 20A, T-P investigation was high as in 10A. In this study, we determined that the most appropriate to use the plant 20A. The injection current 20A, regardless of the electrode distance BOD, COD, SS, TN, TP showed a high removal rate. In this study it was examined and found to comply with the organic matter decomposition and nitrogen and phosphorous removal process.