• 제목/요약/키워드: Analysis research

검색결과 98,407건 처리시간 0.091초

A 90-day Repeated Dose Toxicity Study of Scrophularia Root in Rats

  • Ryeom, Tai-Kyung;Park, Hee-Ra;Hu, Soo-Jung;Kim, Kwang-Jin;Kim, Soo-Jin;Cho, Joon-Il;Kim, Mee-Hye;Han, Beom-Seok;Jang, Dong-Deuk;Kwon, Ki-Sung;Lee, Hyo-Min
    • 한국독성학회:학술대회논문집
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    • 한국독성학회 2005년도 춘계 국제심포지엄 및 학술대회
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    • pp.207-207
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    • 2005
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패널요원 수행능력 평가에 사용된 분산분석, 상관분석, 주성분분석 결과의 비교 (Evaluation of Panel Performance by Analysis of Variance, Correlation Analysis and Principal Component Analysis)

  • 김상숙;홍성희;민봉기;신명곤
    • 한국식품과학회지
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    • 제26권1호
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    • pp.57-61
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    • 1994
  • Performance of panelists trained for cooked rice quality was evaluated using analysis of variance, correlation analysis, and principal component analysis. Each method offered different information. Results showed that panleists with high F ratios (p=0.05) did not always have high correlation coefficient (p=0.05) with mean values pooled from whole panel. The results of analysis of variance for the panelists whose performance were extremely good or extremely poor were consistent with those of correlation analysis. Outliers designated by principal component analysis were different from the panelists whose performance was defined as extremely good or extremely poor by analysis of variance and correlation analysis. The results of principal component analysis descriminated the panelists with different scoring range more than different scoring trends depending on the treatments. Our study suggested combination of analysis of variance and correlation analysis provided valid basis for screening panelists.

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언어 네트워크 분석을 이용한 과학의 본성에 관한 국내연구 동향 (Research Trends of Studies Related to the Nature of Science in Korea Using Semantic Network Analysis)

  • 이상균
    • 대한지구과학교육학회지
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    • 제9권1호
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    • pp.65-87
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    • 2016
  • The purpose of this study is to examine Korean journals related to science education in order to analyze research trends into Nature of science in Korea. The subject of the study is the level of Korean Citation Index (KCI-listed, KCI listing candidates), that can be searched by the key phrase, "Nature of science" in Korean language through the RISS service. In this study, the Descriptive Statistical Analysis Method is utilized to discover the number of research articles, classifying them by year and by journal. Also, the Sementic Network Analysis was conducted to Word Cloud Analysis the frequency of key words, Centrality Analysis, co-occurrence and Cluster Dendrogram Analysis throughout a variety of research articles. The results show that 91 research papers were published in 25 journals from 1991 to 2015. Specifically, the 2 major journals published more than 50% of the total papers. In relation to research fields., In addition, key phrases, such as 'Analysis', 'recognition', 'lessons', 'science textbook', 'History of Science' and 'influence' are the most frequently used among the research studies. Finally, there are small language networks that appear concurrently as below: [Nature of science - high school student - recognize], [Explicit - lesson - effect], [elementary school - science textbook - analysis]. Research topic have been gradually diversified. However, many studies still put their focus on analysis and research aspects, and there have been little research on the Teaching and learning methods.

S.Freud 꿈분석에 관한 연구동향 -국내학술지 중심- (Research Trends on S.Freud Dream Analysis -Focused on Domestic Academic Journals-)

  • 권혜진;신동열
    • 산업진흥연구
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    • 제8권4호
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    • pp.251-256
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    • 2023
  • 본 연구의 목적은 프로이드의 정신분석 이론을 바탕으로 꿈분석에 관련한 연구가 얼마나 이루어졌는가를 알아 보기 위함이고 꿈의 연구의 필요성과 꿈 연구에 대한 후속 연구를 제언하기 위함이다. 연구방법은 프로이드의 꿈분석에 관한 연구 2019년부터 현재 2023년까지 국내학술지를 중심으로 분석하였다. 그 중에서도 학술연구정보서비스(RISS)와 한국학술지인용색인(KCI)에서 키워드 분류절차를 거쳐 수집하여 정리하였다. 분류범주는 정신분석, 국내학술지, 꿈분석, 꿈해석, 꿈분석 연구동향, 꿈 연구동향 등으로 검색하였고 그 중에서도 특히, 정신분석, 꿈분석, 국내학술지, 연구동향을 중심으로 살펴보았다. 결론은 다음과 같이 도출되었다. 첫째, 국내학술지 내 꿈분석에 관한 연구동향 연구들은 많은 비중을 차지하고 있지는 않았다. 둘째, 꿈분석 키워드 중심 연구동향도 그 비율이 현저하게 낮았다. 셋째, 꿈분석의 활용과 빈도도 적었다. 넷째, 꿈분석을 토대로 한 한국형 검사도구들의 연구가 필요할 것으로 요구된다.

Determination of Methylmercury in Biological Samples Using Dithizone Extraction Method Followed by Purge & Trap GC-MS

  • Lee, Jung-Sub;Ryu, Yoon-Jung;Park, Jae-Sung;Jeon, Sung-Hwan;Kim, Sam-Cwan;Kim, Young-Hee
    • Bulletin of the Korean Chemical Society
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    • 제28권12호
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    • pp.2293-2298
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    • 2007
  • In this study, a dithizone extraction technique involving purge & trap GC-MS was developed for the determination of methylmercury in biological samples, especially blood and fish. After alkaline digestion, methylmercury in biological samples was extracted into dithizone and back-extracted into aqueous sulfide solution. The extracted methylmercury was converted to the volatile ethyl derivative, purged and trapped onto a solid-phase collection medium, and then introduced into the GC-MS system. The determined MDLs of the established method were 0.9 ng·g?1 for biological samples and its accuracy and precision were found to be 93% and 3.8%, respectively. The method was validated by analysis of CRMs such as SRM 966, BCR 463 and IAEA 407 and all analytical results were within certified ranges with average RSDs of less than 6%. The analytical results of field-sampled fish also showed that the method can be successfully used as an alternative for commonly used distillation method followed by GC-CVAFS detection.

한의학 연구동향 분석을 위한 페이퍼 맵 분석 시스템의 설계 및 구현 (Design and Implementation of Paper Map for Traditional Korean Medicine)

  • 예상준;장현철;김철;김진현;김상균;송미영
    • 대한한의학회지
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    • 제31권5호
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    • pp.103-111
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    • 2010
  • Objectives: Because of the characteristics of traditional Korean medicine, there are few overseas patents and SCI papers. Researchers are struggling to analyze the research trend using existing patent analysis system and paper analysis system. We aim to build up a web-based paper map analysis system for Traditional Korean Medicine to improve the situation. Methods: We studied the following three sub topics. First, we surveyed the research trend analysis method for traditional Korean medicine. Second, we designed a paper map analysis model and made the algorithm for it. Finally, the development of the paper map analysis system was conducted. Results: We developed a web-based paper map analysis system which has the three main functions being analysis chart, topology map and contour map. For the rich internet application, we used the flex development tool and java integrated development environment. Conclusion: We will provide our paper map analysis system in the OASIS through the minor changes to provide easy use. We hope that this system will be a useful tool to analyze the research trends for traditional Korean medicine.