• 한국고분자학회:학술대회논문집
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• 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
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• pp.334-334
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• 2006

Helical polymers like polyisocyanates with single screw sense are essential to exhibit sophisticated functions like molecular recognition, self-replication, chirality memory and catalytic activity. One approach that has not been explored is the effect on handedness of the polyisocyanates through end-capping with a chiral residue. Induction of chirality in poly(n-hexyl isocyanate) was studied by end-capping with chiral (R and S) 2-bromo-3-methylbutyryl chloride(R-BMBC and S-BMBC). We have shown that a control over living anionic polymerization of HIC by using a suitable initiator affords an opportunity to introduce chiral end-groups with 100% yield and in high purity. This has resulted in helicity induction through extended lengths several orders of magnitude.

• 한국초등과학교육학회지:초등과학교육
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• 제32권3호
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• pp.315-326
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• 2013

In this study, we investigated elementary school teachers' and students' perceptions of the reading materials in science textbooks. Participants were 181 teachers from 23 elementary schools who were teaching science and 643 third- to sixth-grade students from 12 elementary schools. A questionnaire for teachers consisted of 18 items and a questionnaire for students consisted of 11 items about their perceptions of the reading materials in science textbooks. Nine to twelve items, according to grades, examining the actual uses of each reading material in science textbooks were also included to both questionnaires. The results indicated that teachers have positive perceptions about reading materials and frequently use them in case of needs for supplement and/or enrichment of science learning. Novice teachers were found to have less positive perceptions about reading materials than expert teachers. Over 70 percent of students responded that they read all reading materials. Fifth- and sixth-grade students were tended to have less positive perceptions about reading materials than third-grade students. Finally, students tended to have more positive perceptions about reading materials than their teachers.

• Journal of Electrochemical Science and Technology
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• 제11권4호
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• pp.323-329
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• 2020

The cathodic hydrogen evolution ability of different pure metals and their long term galvanic corrosion behavior with pure Mg were investigated. The hydrogen evolution ability of pure Ti, Al, Sn and Zr is weak, while that of Fe, W, Cr, and Co is very strong. Initial polarization test could not completely reveal the cathodic behavior of the tested metals during long term corrosion. The cathodic hydrogen evolution ability may vary significantly in the long term galvanic tests for different metals, especially for Al whose cathodic current density reduced to 1/50 of the initial value. The anodic polarization shows that Al and Sn as alloying elements are supposed to provide relatively good passive effect for Mg alloy, while Ag can provide a slight passive effect and Zn has little passive effect.

• 한국초등수학교육학회지
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• 제13권1호
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• pp.31-49
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• 2009

본 연구에서는 교육과정 속에서 수학교구의 구체적인 활용방안과 그 과정에 대해 연구하여 현행 교육과정에서의 수학교구 활용 수업에 도움을 주는데 목적을 두고, 수학교구를 수학수업에 활용한 후, 학습 능력 수준에 따른 학생들의 반응과 수학교구와 관련된 문제해결 과정에서 학습 능력 수준에 따른 교구 활용 의존도를 분석하였다. 그 결과, 수업이 진행되는 동안 모든 학습 능력 수준에서 높은 흥미도가 관찰되었고, 학습 능력 수준별로 교구를 활용하는 모습이 조금씩 다르게 나타났다. 또한, 학습 능력 수준이 낮을수록 높은 교구 활용 의존도를 나타내었으나, 교구에 대한 전적인 의존은 하 수준의 학생들에게 나타나는 무조건적인 현상이 아님이 관찰되었다.

• 한국컴퓨터정보학회논문지
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• 제16권12호
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• pp.157-165
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• 2011

정보 과목에서 컴퓨터 과학의 원리와 이해를 증진시킬 수 있는 내용과 문제해결 방법과 절차에 대한 내용, 정보 윤리에 대한 내용이 강화되었으나 2007 개정 교육과정의 컴퓨터 과학의 원리와 이해, 문제 해결 방법과 절차에 대한 내용들은 7차 교육과정의 활용, 소양 위주 내용에 비해 쉽지 않은 내용이며 학습자에게 어려운 과목으로 인식됨에 따라, 학습자가 쉽게 접근가능하고 적극적인 참여를 유도할 수 있으며 학습자의 흥미를 유발하여 학업성취도를 높일 수 있는 교육 자료가 요구된다. 본 연구에서는 중학교 정보 표현에 관한 내용을 컴퓨터를 사용하지 않는 놀이활동 교육 자료로 개발하고 중학교 2학년들을 대상으로 4차시 수업을 진행한 후 학업성취도에 미치는 영향을 검증하였다. 그 결과, 놀이 활동 교육 자료를 활용한 수업이 강의식 수업에 비해 학업 성취도 면에서 유의미한 차이를 보였다. 이는 놀이 활동 교육 자료를 활용한 수업이 학업 성취도에 긍정적인 영향을 준 것으로 볼 수 있다.

• 정보교육학회논문지
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• 제22권1호
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• pp.169-176
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• 2018

2015 개정 교육과정에 따른 초등학교 소프트웨어교육의 내용에서 큰 변화는 컴퓨터과학 언플러그드교육의 제시이다. 이 교육과정에서 담겨 있는 데이터에러 검출과 수정에 대한 교육자료와 교수법은 부족하여 우리나라 현장학교에 도입하기에 어려움이 있다. 본 연구에서는 이 주제와 관련된 선행 연구를 바탕으로 초등 고학년에 적합한 해밍코드를 활용한 교육자료를 개발하였다. 교육자료의 개발과정은 단계별 학습을 위해 도입부에 카드마술을 소개하고, 해밍코드의 원리를 바탕으로 '에러 검출 및 수정' 교육자료를 활동중심교육으로 구성하였다. 본 연구에서 제시한 교육자료의 현장적용에 대한 평가에서 학습자들은 컴퓨터과학에 대한 이해도를 향상시키는데 긍정적인 영향을 준 것으로 나타났다.

• 한국재료학회:학술대회논문집
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• 한국재료학회 1998년도 IUMRS-ICEM ABSTRACT BOOK
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• pp.60.4-60
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• 1998

• 공학교육연구
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• 제17권4호
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• pp.33-37
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• 2014

From 2010, an "excellent engineer" undergraduate and graduate program had been initiated in higher education of China to promote the development of industry and social economy. In this circumstance, the engineering education programs in Dalian Maritime University are reformed to satisfy the requirements of transportation industries. And the engineering practice, engineering activities, and engineering courses are emphasized. In this training program, industrial communities are deeply involved in the engineering education and training procedure; the students are educated and trained in university and enterprise according to the common standards and industrial standards; and the engineering competences and creative ability are emphasized and are to be enhanced in the training schedules and procedure. A joint-training mode has been established already between Dalian Maritime University and enterprises in transportation fields.

• 대한지구과학교육학회지
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• 제8권1호
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• pp.66-75
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• 2015

This study is to investigate an argumentation level for elementary school students after analysing an argumentation structure about a socio scientific issue(SSI), and inquire a change of the decision-making according to the refutation materials and empathic situation. This data was collected from the semi-structured interview with the 14 students, grade 6th. For this, the first stage is to present the reading materials about the SSI to the students, let them decision-making and make them argue pro and con about the SSI during the interview. After that, facing with the refutation materials against the existing contention and the empathic situation, the change of the decision-making of the students was conducted. After the research, the level of the argumentation of the students was low, and the students who didn't have the background knowledge about the theme made the decisions according to the values, emotions or intuitions of their own. And the decision-making of the students changed more when presented with the refutation materials and the empathic situation, they were difficult to make the decision because of new information and various stances. Besides, they lacked in the ability that recognize the situation related with their own life, just used the fragmentary knowledge associated with value of life respect. Through these result, it is necessary to produce the refutation materials and empathic materials about the SSI to the students for improving the level of argumentation.

• 대한영양사협회학술지
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• 제10권4호
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• pp.428-441
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• 2004

This study focused on developing and assessing the effectiveness of maternal and child nutrition education materials that can be used conveniently at health centers. Focus group interviews with pregnant women, research of websites for pregnant women, and questionnaire-based surveys on community residents' needs for maternal and child nutrition services were conducted as preliminary study. The focus group interviews were conducted ten times, with five or six women, and the needs assessment was carried out on 884 pregnant or lactating women. The contents of the education materials developed based on the preliminary study were made up of the pregnant women section and the lactating women section. The entire material was composed of lecture materials, guidelines for educators, and handout materials for mothers, in the form of CD and booklets. The lecture materials were made using MS Power Point and the guidelines were wrote specifically, including basic information, main points to the lectures, and lesson plans, so that even non-professionals can easily use them. The effectiveness of the education materials was assessed based on a pretest and posttest method. The reliability of the test instrument was measured by Cronbach alpha, which was 0.75. The results were that the participants' nutrition knowledge scores showed a significant increase(p<0.05) from 3.79$\pm$0.33 to 3.96$\pm$0.34, and their attitudes changed positively after the education (p<0.05).