• Title/Summary/Keyword: Young Mee Chung

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Ecological Characteristics of Lithospermum erythrorhizon Population in Habitats (지치(Lithospermum erythrorhizon) 개체군 자생지의 생태학적 특성)

  • Ahn, Young-Hee;Jin, Ying-Hua;Choe, Chang-Yong;Lee, Kyung-Mee;Lee, Sang-Hyun
    • Korean Journal of Pharmacognosy
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    • v.40 no.4
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    • pp.289-297
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    • 2009
  • This study was carried out to investigate the ecological characteristic of native Lithospermum erythrorhizon population in Korea. The survey quadrates were located in the middle of native L. erythrorhizon habitats. As the result of the research, the ecological patterns of native habitats were found to be divided into inclined plane type, ridge type, mountain-roadside type, and rock bed type. The research revealed 90 taxa in total, in which 37 families, 63 genera, 23 varieties, 6 forma, 1 sub-species and 60 species were checked in the flora of native L. erythrorhizon habitats.

Exploring a Researcher's Personal Research History through Self-Citation Network and Citation Identity (자기 인용 네트워크와 인용 정체성을 이용한 연구자의 연구 이력 분석에 관한 연구)

  • Lee, Jae-Yun
    • Journal of the Korean Society for information Management
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    • v.29 no.1
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    • pp.157-174
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    • 2012
  • This paper compares two recent methods for exploring a scientist's research history: citation identity and self-citation network. The former is proposed by White(2000), while the latter is suggested by Hellsten et al.(2007). An experimental citation analysis was carried out on the research output of Young Mee Chung, a renouned Korean information scientist. The result shows that the two methods divided the research period into two sub-periods in the same way. They also identified the major research themes very similarly. In the analysis of each method's performance in depth, the two methods revealed different functions to understand a researcher's history. Citation identity was useful to identify authors who have affected Chung's research in terms of research topics. whereas, self-citation network was successful to identify the core papers and leading papers of the research sub-periods. This study indicates the combination of two methods can provide rich information on a scientist's research history.

Demographic Characteristics of Zipeprol-associated Deaths in Korea

  • Chung, Hee-Sun;Choi, Hwa-Kyung;Kim, Eun-Mi;Park, Mee-Jung;Chung, Kyu-Hyuck;Yoo, Young-Chan
    • Archives of Pharmacal Research
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    • v.21 no.3
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    • pp.286-290
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    • 1998
  • The abuse of zipeprol, an antitussive agent, was found to be most prevalent among young people in Korea. Because abusers take large doses of this drug for its hallucinogenic effects, fatalities from zipeprol overdose abuse have been on the rise since 1991. Since 1991, a total of 69 zipeprol-related deaths have occurred throughout the nation. A demographic study shows that in ninety six percent of cases involving zipeprol alone, the victims were in their teens and twenties. The mate/female ratio in zipeprol related death was 3.5:1. Most of these zipeprol-associated deaths occurred in the larger cities of Seoul and Inchon. The blood concentration of zipeprol ranged from 0.8 to $38.3{\mu}g/mL $in single drug involved deaths, while zipeprol varied from to 35.3 $0.1{\mu}g/mL $in zipeprol and dextromethorphan victims.

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Newspaper Thesaurus Construction in Theory and Practice (신문 시소러스 개발의 이론과 실제)

  • Chung Young-Mee
    • Journal of the Korean Society for Library and Information Science
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    • v.25
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    • pp.51-82
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    • 1993
  • Effective indexing systems are required to enhance the performance of full-text retrieval systems. The result of the analysis of index terms selected by human indexers without a newspaper thesaurus indicates that controlled indexing language is necessary for effective and consistent indexing of newspaper articles. In this paper, basic principles are established for keyword selection from Korean newspapers and significant problems identified in the process of developing a newspaper thesaurus are discussed in depth.

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