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Properties of iron oxide nanoparticles by a hydrophobic surface modification
이서주,김덕기,류호준 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
광결정은 외부의 자극에 의해 입자들의 band gap을 조절하여 색을 나타낸다. 이런 광결정 물질들 중 산화철은 분산 안전성이 우수하고, 다양한 어플리케이션에 응용이 가능하여 많이 사용되는 물질이다. 그러나 비수계 비극성 용매에서는 정전기적 힘이 유도되지 않기 때문에 다른 특성을 보인다. 이번 연구에서는, 우리는 산화철 입자에 -F원자에 의해 낮은 표면에너지를 가져서 우수한 소수성을 가지는 플루오르 실란계 물질을 이용하여 산화철을 표면처리하였다. 이렇게 표면처리된 산화철 입자는 비극성 용매에서 플루오르 물질들의 소수성 체인에 따라 다양한 특성을 보인다. 다양한 물질로 표면처리된 산화철 입자를 이용하여, 전자잉크 형태로 만들어서 다양한 분석을 진행하여 광결정 소자로서 응용가능함을 확인하였다.
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군집화 기법을 이용해 성별에 따른 영국 학생의 심화교육과정 성취도와 성공률 상관관계 분석
이서주(Seo Joo Lee),권영만(Young man Kwon) 한국IT마케팅학회 2015 한국IT마케팅학회 학술대회 Vol.2015 No.1
In this paper, we performed a cluster analysis comparing the success rate of gender for each cluster by the British student achievement using data recorded curriculum achievement and success for deepened on the basis of gender and age. Was used as the K-Means Clustering for hierarchical analysis, the sex into groups was successful performance by facilitating the analysis. Accordingly it was requires evaluating the suitability of an algorithm known to the performance tests and about based on the verification of the results of this study chair to use an optimized algorithm for a particular situation. In this paper, in particular conversion, the same data for the purpose of analysis of the data using cluster analysis to easily form the analysis is to collect experimental data. Through this look easy, even after the British fitness gender analysis of achievement data to see higher education as a judgment chances
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군집화 기법을 이용해 성별에 따른 영국 학생의 심화교육과정 성취도와 성공률 상관관계 분석
이서주(Seo Joo Lee),권영만(Young man Kwon) 한국IT마케팅학회 2015 한국IT마케팅학회 논문집 Vol.1 No.1
In this paper, we performed a cluster analysis comparing the success rate of gender for each cluster by the British student achievement using data recorded curriculum achievement and success for deepened on the basis of gender and age. Was used as the K-Means Clustering for hierarchical analysis, the sex into groups was successful performance by facilitating the analysis. Accordingly it was requires evaluating the suitability of an algorithm known to the performance tests and about based on the verification of the results of this study chair to use an optimized algorithm for a particular situation. In this paper, in particular conversion, the same data for the purpose of analysis of the data using cluster analysis to easily form the analysis is to collect experimental data. Through this look easy, even after the British fitness gender analysis of achievement data to see higher education as a judgment chances
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김지선,노자민,류진영,오정연,이서주,정미영,조재실,주한별 이화여자대학교 간호과학대학 2011 이화간호학회지 Vol.- No.45
The purpose of this study was to investigate the aspect and degree of female university students' menstruation discomfort and to study how the menstruation discomfort affects their quality of life The subjects consisted of 315 female university students in Seoul City by convenience sampling from July 22 to August 3, 2010. The data was collected by structured questionnaire that included general characteristics, Menstrual Distress Questionnaire and Smith Kline Beecham 'Quality of Life' Scale. To analyze the data, used the following methods: frequency, mean, standard deviation, t-test, ANOVA, Pearson's correlation coefficients with the SPSS program 15.0. The Results as follows: The participants indicated water accumulation, the ache, negative emotion, conduct change and attention intensive obstacle order to show the women's menstrual discomforts and the quality of life was high competent feeling, body and mental stability, vitality and stability order. The correlation of the women's menstrual discomforts and the quality of life was r=-.605 and p=.000, the women's menstrual discomforts and the quality of life show considerably negative correlation. In the event that the women's menstrual discomforts was high comes to be low appeared the quality of life. As a result, this study showed that the women's menstrual discomforts and the quality of life have negative correlation, and discovered various factors which effect to the menstrual discomforts and the quality of life for the women's college students. Thus in the future, do a research for the middle school girls, the maiden and married women, and the repetition research of the women's college student is necessary. The nursing arbitration program development for relaxation of the women's menstrual discomforts is necessary as well.
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