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광주지역 일부 주유소 분진중의 중금속 원소함량에 관한 연구
이한별,윤정한 한국자원공학회 2010 한국자원공학회지 Vol.47 No.1
Sixty street dust samples were collected from 25 gas stations located around the 1st beltway of Gwangju city. They were classified into two groups; -80 mesh∼+200 mesh and -200 mesh samples. The sample of 0.1 g was decomposed by mixed acid of HNO3, HClO4, HF, and heavy metals such as Cu, Fe, Mn, Pb and Zn were analyzed by ICP-AES. Concentrations of heavy metals such as Cu, Pb and Zn in the dusts around lubricator were enriched in several times compared to those of roadside dusts between entrance and exit of gas stations. Fe and Mn were probably derived from earth crust (rocks) not from anthropogenic, however, distribution characteristics of heavy metals such as Pb and Zn were strongly constrained in pollutant factors such as traffic and industry. 광주광역시 제1순환도로변에 위치한 25개 주유소에서 약 60개의 강하분진을 채취하여 -80 mesh∼+200 mesh 시료와 -200 mesh 시료로 구분하였다. 0.1 g의 시료를 HNO3, HClO4, HF의 혼합산으로 분해하여 Cu, Fe, Mn, Pb 및 Zn 등의 중금속원소를 ICP-AES로 분석하였다. 주유기 주변 분진중 Cu, Pb 및 Zn 등의 중금속원소 함량은 주유소 입구와 출구 사이의 도로분진 보다 수 배 이상 더 부화되었고, Fe와 Mn은 인위적인 오염보다 지각(암석)으로부터 기인된 것으로 보이며 Pb와 Zn 등의 중금속 원소의 분포 특성은 인위적인 오염을 일으키는 요인에 의하여 강하게 지배 받았다.
이한별,조교영 장전수학회 2020 Advanced Studies in Contemporary Mathematics Vol.30 No.4
A multivariate control chart that observes various charac- teristics at the same time was proposed by Hotelling. However, Hotelling's control chart has the disadvantage of slowing the speed of detecting anomalies when very small changes in the process occur, so rules for mul- tivariate control charts have been proposed. In this paper, to increase the sensitivity of the Shewhart chart, which has the same shortcomings, the proposed rule, Western Electronic Company's rule, is applied to the multivariate chart to obtain the run-length distribution. The run-length distribution is calculated by recognizing that an abnormality occurs in the process when the mean vector of the process changes in the pro- duction process. The run-length distribution of the multivariate control chart obtained using the proposed runs rule and the embedded nite Markov chain conrmed that the mean of run-lengths decreased sharply when very small changes occurred in the process. This means the speed of detecting small changes in the process is fast. Therefore, this method is expected to be eective when observing very small changes due to multivariate quality control problems.
한국의 교육훈련 정책차용 메커니즘 연구 : 일학습병행 정책 사례를 중심으로
이한별 한국비교교육학회 2023 比較敎育硏究 Vol.33 No.6
본 연구의 목적은 외부의 도제식 교육훈련 정책이 한국에 차용되는 메커니즘을 분석하고, 이 메커니즘 속에서 외부의 정책이 한국형으로 변형되는 이유를 규명하는 것이다. 이러한 목적을 달성하기 위해 본 연구에서는 문헌분석과 반구조화 인터뷰를 통해 자료를 확보하여 질적사례연구를 수행하였다. 인터뷰는 표본의 대표성과 균형성을 고려하여 산·학·관·연 일학습병행 관계자 총 34명을 선정하여 실시하였다. 본 연구에서는 구조와 행위자의 영향력을 모두 고려하여 사회 변화 메커니즘을 설명하는 형태발생론의 관점에서, 기존 교육훈련 정책차용 분석틀을 보완한 새로운 분석틀을 설계하였다. 이 분석틀을 기반으로 한국의 도제식 교육훈련 정책차용 메커니즘을 구조적 조건화, 행위자 상호작용, 구조적 내재화 3단계로 구분하여 분석했다. 그리고 구조와 행위자에 의해 외부 정책 원형이 어떻게 한국형으로 변형되었는지 논의하였다. 이를 바탕으로, ‘한국형’ 변형의 의미를 고찰하고 한국형 교육훈련 정책차용이 나아갈 방향을 제언하였다. 본 연구의 의의는 한국의 도제식 교육훈련 정책차용 메커니즘과 외부 정책 변형의 이유를 규명함으로써, 한국의 구조와 행위자 특성에 맞는 한국형 일학습병행으로의 발전을 위한 피드백을 제공하고 있다는 것이다. 나아가 본 연구는 새로운 교육훈련 정책차용 메커니즘 분석틀을 제안함으로써 향후 정책차용 사례연구를 위한 기반을 마련하였다. The purpose of this study is to analyze the mechanism by which external apprenticeship policies are borrowed in Korea, and to identify the reasons why external policies are transformed into Korean style within this mechanism. To achieve this goal, this study conducted a qualitative case study by securing data through literature analysis and semi-structured interviews. The interviews were conducted by selecting a total of 34 people involved in industry, academia, government, and research institute concurrently in consideration of the representativeness and balance of the sample. In this study, from the perspective of morphogenetic theory that explains the mechanism of social change by considering both the influence of the structure and agency, a new analysis framework was designed to supplement the existing education training policy borrowing analysis framework. Based on this analysis framework, Korea's apprenticeship policy borrowing mechanism was analyzed by dividing it into three stages: structural conditioning, actor interaction, and structural internalization. And how the external policy prototype was transformed into the Korean style by the structure and actors was discussed. Based on this, the meaning of the ‘Korean style’ transformation was reexamined and the direction for the Korean education training policy borrowing was suggested. The implications of this research is that first, by clarifying the mechanism of the Korean apprenticeship policy borrowing, it provides feedback to policy makers and researchers on ways to develop a truly Korean style apprenticeship policy by taking the Korean structure and agency into account. This research also suggests a new framework to analyze the education training policy borrowing mechanism by considering both the structure and the agency on equal terms.
Evaluation of Cellulolytic Enzyme Production by Indigenous Fungi in Korea
이한별,이영민,허영목,이재정,김재진 한국환경생물학회 2017 환경생물 : 환경생물학회지 Vol.35 No.4
The aim of this study was to select various fungal strains indigenous to Korea that have the potential to produce cellulases, including filter paper activity (FPase), endo-β-1,4-glucanase (EG), and β-glucosidase (BGL). Among the 25 species of Ascomycetes and the 32 species of Basidiomycetes tested in this study, the Bjerkandera adusta KUC10565, Heterobasidion orientale KUC10556, Hyphoderma praetermissum KUC10609, and Trichoderma harzianum KUC1716 all exhibited remarkably high FPase activity. In addition, the T. harzianum KUC1716 showed high levels of EG and BGL activity. This strain has been selected for further study because of their enzymatic potential.