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Octopole reaction cell이 장착된 ICP-MS에 의한 분유 중 셀레늄의 정량
조성일,김미주,김용하,민영근,김영상 한국분석과학회 2006 분석과학 Vol.19 No.3
Octopole reaction cell inductively coupled plasma mass spectrometer (ORC-ICP-MS)를 이용하여 우 유 분말시료 중 극미량의 셀레늄(Se)을 정량하였다. 반응가스로 H2를 사용함으로써 극미량 측정에서 발 생되는 다원자 이온 종들과 공존 원소에 의해 발생되는 분자들의 방해를 현저하게 제거하였다. Normal mode에 비해서 H2 cell gas mode는 정확성과 정밀성을 크게 향상시켰으며, 우유 표준시료의 보증 값에 비해 정량한 결과는 평균 102.7%로 약간 높게 나타났고, 5회 정량한 값에 대한 상대표준편차는 7.6%이었다.
趙誠一 建國大學校 1972 敎授論壇 Vol.1 No.1
최신 미국을 비롯하여 선진각국의 많은 학자들이 기업을 효과적으로 유지발전 시키기 위해서는 그 기업에 속해있는 종업원들의 욕구를 충족시키는 것이 가장 중요한 과제라고 하는 점에 의견을 같이하고 있다. 어느 기업을 막론하고 종업원들의 욕구를 최대로 충족시켜 그들에게 주어진 과업을 원만히 달성케 한다는 것은 가장 중요한 기본 목적이라 할 수 있겠다. 심리학이라든가 사회학 또는 인간관계에 대한 지식을 소개함에 있어서도 대부분의 학자들은 기업의 유지발전을 위해서는 종업원들의 인간적 욕구를 충족시켜 주는 것이 중요하다고 깊이 인식하게 되었다.
趙誠一 건국대학교 교육대학원 1988 敎育論叢 Vol.10 No.-
The classical theory of organization by Taylor who wasn't concerned about leadership had been under the control of scientific administration. But the guidance was thought to be very important to the human relation in modern society. The recent theories in educational administration suggest that school administrators should do the behaviors under their leader in order to harmonize the duty performance with the human relationship for the aim of school organization achieved effectively. The purpose of this study, which is based on the research of the behavioral styles of leadership, is to survey the concepts and types of Leadership, to research its theoretical background and to clarify the style of guidance which are demanded to the school administrators. Though the theories of leadership which are various in its definition, the common points are the school administrator's technics and influences to constituent the self-regulation among their teachers so that school administrators can achieve the aim of the organization in a school and may help the harmonious moods for their teachers. The theories of leadership are classified by three parts-1. Traits theory 2. Situation theory 3. Behavior-scientific theory 4. Contingency theory. The traits of character in socio-phychological theory by Stogdill, Gibb and Ghiselli are to study the temperament of the school administrators on the basis of their traits and to classify their desirable types for the performance of educational administration. Situational theory by Alan, Flly, House and Hemphill is the main point that the situation is more important than the traits of the school administrators. The behavior-scientific theory is to get the starting point to study the defects of the socio-psychological theory, to survey the acts of school administrators in advance of their traits and situation to research which type endows them to enhance the member's spirits and to influence the creativity of the organization. The behavior scientific theoriy is mainly studied by Banard, Lewin, Lippitt, White, Tannenbaum and the researchers of Ohio University and Michigan University. The representative studies on the theory are four-classified types of leadership by Halpin , the types by Likert and the administrative network by Blake and Mouton. The contingency theory by Fiedler, Reddin, Hersey and Blanchard is the approach which is composed of the three dimensions to be studied on the situation added to dualistic methods. The administrative patterns may be varied by the correlations of three factors the school administrator, his members and the situation of a school. That is to say that the patterns must be designed by three factors. In conclusion, I suggest four points for the administrative patterns. 1.A school administrator must make a good plan for a school and lead the members of a school. 2.He must lead his members by the way of democracy for the adjustment of harmony among his members and their tasks. 3.He must evaluate and examine himself about the administrative behaviors objectively. 4.He must be recognized as the most important person for the organization and the traits of a school.
Formation of uniform and compact hole-blocking layer for applications to perovskite solar cells
조성일,신동원,남혜정,성혜경,심준형,양기정,한윤수 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.0
Lead halide perovskites have been proven to be excellent materials for photovoltaic applications with certified power conversion efficiency (PCE) exceeding 20%. Efficient lead halide perovskite solar cells have used hole-blocking layers to get a higher collection efficiency of photogenerated electrons and to achieve high open-circuit voltages. Thus, uniform and compact hole blocking layers are necessary for high efficient perovskite-based thin film solar cells. In this study, we will report on formation of uniform ZnO and TiO2 layer as the hole-blocking layer prepared from various processing conditions.