• 분석과학
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• 제12권6호
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• pp.465-471
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• 1999

클로로메틸화폴리스틸렌에 디에틸렌트리아민을 선형과 집게형으로 지지시킨 수지를 합성하고 이 수지에 전이금속이 흡착되는 속도를 limited-bath법으로 측정하였다. 이 결과에서 확산계수, 활성화 엔트로피와 활성화 자유에너지를 구하였다. 속도론적 데이터에서 전이금속이 수지에 흡착되는 반응 과정의 속도결정단계는 확산과정임을 알 수 있었다.

• Bulletin of the Korean Chemical Society
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• 제14권1호
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• pp.47-52
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• 1993

The vibrational relaxation rate constants of NO(v = 1-7) by $O_2\;and\;N_2$ have been calculated in the temperature range of 300-1000 K using the solution of the time-dependent Schrodinger equation. The calculated relaxation rate constants by $O_2$ increase monotonically with the vibrational energy level v, which is compatible with the experimental data, while those by $N_2$ are nearly independent of v in the range of $3.40 {\pm}1.60{\times}10_{-16} cm^3$/molecule-sec at 300 K. Those for NO(v) + $N_2$ are about 2-3 orders of magnitude smaller than those for NO(v) + $O_2$, because the latter is an exothermic processes while the former an endothermic. Relaxation processes can be interpreted by single-quantum V-V transition. The contributions of V-T/R transition and double-quantum V-V transition to the relaxation are negligible over the entire temperature range.

• Child Health Nursing Research
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• 제27권3호
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• pp.286-296
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• 2021

Purpose: This study was conducted to explore first-time fathers' experiences during their transition to parenthood in South Korea. Methods: Data were collected from September 2019 to February 2020 through in-depth interviews that were conducted individually with 12 participants. First-time fathers with children under 2 months of age were recruited. Verbatim transcripts were analyzed using Colaizzi's phenomenological method. Results: Four theme clusters were identified: Preparing to become a father, challenges of becoming a father, motivation to foster familial bonds, and acknowledgement of fatherhood. Conclusion: These findings suggest that Korean first-time fathers prepared to practice parenthood through prenatal education, taegyo, and feeling bonds with their new baby. They recognized their identity as fathers and experienced self-growth. These results would be beneficial for health professionals in developing perinatal care programs, and the results provide basic data for studies on fathers and families during the transition to parenthood.

• 한국자기공명학회논문지
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• 제23권2호
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• pp.40-45
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• 2019

The phase transition temperatures and thermodynamic properties of $(NH_4)_2MnCl_4{\cdot}2H_2O$ grown by the slow evaporation method were studied using differential scanning calorimetry and thermogravimetric analysis. A structural phase transition occurred at temperature $T_{C1}$ (=264 K), whereas the changes at $T_{C2}$ (=460 K) and $T_{C3}$ (=475 K) seemed to be chemical changes caused by thermal decomposition. In addition, the chemical shift and the spin-lattice relaxation time $T_{1{\rho}}$ were investigated using $^1H$ magic-angle spinning nuclear magnetic resonance (MAS NMR), in order to understand the role of $NH_4{^+}$ and $H_2O$. The rise in $T_{1{\rho}}$ with temperature was related to variations in the symmetry of the surrounding $H_2O$ and $NH_4{^+}$.

• 한국보육지원학회지
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• 제15권6호
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• pp.21-40
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• 2019

Objective: The purpose of this study is to find the tendencies and differences of mother's child-rearing anxiety before and after their children enter into elementary school, to analyze the factors influencing child-rearing anxiety at each time, and thereby to seek a support plan at the time of transition. Methods: The subjects of this study were 181 mothers who participated in two surveys which were conducted before and after their child entered into elementary school. Results: Firstly, mother's child-rearing anxiety before and after their children's entrance into elementary school was at a middle level, but increased significantly when they experienced their children's transition to elementary school. Secondly, mother's child-rearing anxiety, before their children's entrance into elementary school, was influenced by private education, the collection of educational information, cognitive ability, whether or not to develop a work status change plan, and birth order sequentially. Thirdly, child-rearing anxiety after their children's entrance into elementary school was significantly influenced by child-rearing anxiety before their children's entrance into elementary school and the mother's employment. Conclusion/Implications: This study is meaningful in the point that it suggested the necessity for the cooperation between multiple systems, such as systematic and stepwise parenting education, the importance of offering information to educational institutions and local governments, and for work- family support policy to prioritize children in order to support children's successful transition into elementary school.

• 컴퓨터교육학회논문지
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• 제19권6호
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• pp.55-68
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• 2016

2015 개정 정보과 교육과정에서는 문제해결과 프로그래밍 단원을 나선형으로 조직하면서 학교급 별로 블록형과 텍스트형 프로그래밍 언어의 사용을 제안하였다. 본 연구는 프로그래밍 학습에서 알고리즘 작성이 프로그래밍 학습에 도움을 주는지, 블록형 프로그래밍 학습이 텍스트형 프로그래밍 후행학습에 긍정적 전이효과가 있는지를 확인하기 위한 목적으로 진행되었다. 목적 달성을 위해 초등학생 15명을 대상으로 블록형과 텍스트형 프로그래밍 학습을 진행하였다. 연구 결과, 한정된 방법으로 알고리즘을 작성하는 것은 학습자들의 사고 표현을 가로막을 수 있지만 블록형 프로그래밍 학습은 텍스트형 프로그래밍 학습에 긍정적 전이가 있음을 확인하였다. 본 연구는 초등학교부터 계열성 있는 프로그래밍 교육을 위한 방안을 제시하였다는 것에 의의가 있다.

• 한국엔터테인먼트산업학회논문지
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• 제14권3호
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• pp.117-132
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• 2020

본 연구의 목적은 한국과 독일의 평생교육정책을 역사적 변천과정을 중심으로 검토하여 이를 토대로 한국의 평생교육정책에 바람직한 발전방안을 모색하는데 있다. 이를 위해 한국과 독일의 평생교육에 대한 연구논문과 독일 연방 교육연구부(BMBF), 독일 성인교육연구소(DIE), 독일 성인교육협회(DVV), 유럽 성인교육협회(EAEA), 유네스코 평생학습연구소(UIL)와 국가평생교육진흥원에서 발간한 실무자료 등을 활용하여 한국과 독일의 평생교육정책을 비교·분석하였다. 연구결과, 독일의 평생교육정책은 지역의 특성에 맞는 프로그램을 운영하는 가운데, 사회적·직업적 전문성 향상을 촉진하고 있으며, 한국의 평생교육정책은 정치적 민감성 때문에 시민교육이 지자체 단위의 평생교육 차원에서 미비한 수준임을 확인할 수 있었다. 또한, 독일의 경우 평생교육 참여가 용이한 환경에 대한 구축을 통하여 평생교육 참여율에 대한 확대를 추진하고 있으며, 이에 반해 한국의 평생교육 참여율은 경제협력개발기구(OECD)선진국에 비해 낮은 상태인 것으로 확인되었다. 마지막으로, 독일의 평생교육정책은 교육에 있어서 독립이라는 이념적 원칙에 따라 사회의 요구에 자연스러운 변화를 추구하고 있으며, 그에 반해 한국의 평생교육정책은 중앙정부에 의해 통제되는 경향이 강한 것을 확인할 수 있었다. 본 연구결과 독일의 평생교육정책은 한국의 평생교육정책에 다음과 같은 시사점을 제공한다. 첫째, 학습자의 교육 수요가 다양해짐에 따라 공급자 중심에서 학습자 중심 교육체계에 대한 확대이다. 둘째, 직업분야의 평생교육에 대한 활성화이다. 셋째, 양질의 평생학습 지원을 위한 평생교육 예산 확대이다. 넷째, 지속가능한 평생학습사회 실현을 위한 종합적이고 장기적인 시스템 구축이 이루어져야 한다.

• 한국보육지원학회지
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• 제17권4호
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• pp.49-71
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• 2021

Objective: This study aims to explore the experiences of women who take a career break while working in daycare center as a teacher assistant. Methods: Seven assistant teachers and two child care teachers who took more than two years of career break were selected and given in-depth interviews over 17 weeks from August to December in 2020. Results: The results of this study are as follows. First, the women experienced the need for a career transition as an assistant teacher because it was time to for a change. Second, while working as a teacher assistant, they had various experiences and meanings in the process of career transition while playing the role as a teacher in daycare centers. Third, they also had some difficulties in conflict and some needs to build their professional expertise as a teacher. Conclusion/Implications: The study is expected to give insights to understand the difficulties of teachers who had experienced the need for a career transition as teacher assistant and to provide important data to develop teacher professional development.

• Bulletin of the Korean Chemical Society
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• 제13권2호
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• pp.135-139
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• 1992

The mono(aryl)cyanoplatinum(II) complex $[Pt(CN)(C_6H_3{CH_2NMe_2}_2-26)]$, reacts with the dihalogens to yield the mono(aryl)cyanoplatinum complexes $[PtX_2(CN)(C_6H_3{CH_2NMe_2}_2-26)]$, (X = Cl, Br, I). The structural configuration of the two halogen atoms for a square planar platinum complex was studied by 1H-NMR spectroscopy and led to a mixture of trans and cis orientation. The trans orientation was found to be more stable in energy (1.33 kcal/mol) than the cis orientation by means of Extended H ckel calculations. On the base of a combination of the analysis of $^1H-NMR$, $^{13}C-NMR spectra and computational calculations it is assumed that the intermediate consists of an initial attack in the linear transition state, leading to the $S_{N}2$ type mechanism.

• 의학교육논단
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• 제21권3호
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• pp.137-142
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• 2019

Producing graduates with sufficient practical competency is the main mission of every educational institution. Following the accreditation of the Korean Institute of Medical Education and Evaluation, medical schools have been stepping up efforts to establish curriculum that reflects the practical value of medical education and the importance of adapting to the practice of graduates in order to increase the accountability of medical education in Korea each year. To this end, all medical schools have recently made efforts to develop diverse policies to strengthen the social accountability of medical education along with the transition to a competency-based curriculum. In line with this trend, the institutional accountability of medical education as well as the personal accountability of students, the main subjects of learning, should be highlighted, and educational activities to foster accountability need to be specified. Personal accountability in medical students involves recognizing their social accountability as future doctors and understanding and practicing student accountability. To achieve this, medical schools should provide programs that support and teach practical application of skills, and students need to define and attempt specific activities to strengthen their accountability.