• Title/Summary/Keyword: chao

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The Application of Species Richness Estimators and Species Accumulation Curves to Traditional Ethnobotanical Knowledges in South Korea (남한지역 전통민속식물지식 자료를 활용한 종누적곡선 분석 및 종풍부도 추정 연구)

  • Park, Yuchul;Chang, Kae Sun;Kim, Hui
    • Korean Journal of Plant Resources
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    • v.30 no.5
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    • pp.481-488
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    • 2017

  • Under circumstances of rapid disappearing of traditional ethnobotanical knowledge, traditional ethnobotanical knowledge surveys are the major step in documenting useful species with a conservation priority. In the ethnobotanical research, the relevance to the survey intensity, ethnobotanical information and plant species richness is the most important research theme. We made up TEK database in south Korea using metadata which had been published by the Korea National Arboretum. We calculated species richness using species richness estimator like ACE, Chao1, Chao2, ICE, Jack 1, Jack 2, and Bootstrap. Species accumulation curves showed each province sampling efforts appeared to be wide range of variance so that Gangwon province need more sampling efforts, and Chungnam province approached a horizontal asymptote earlier. We found heterogeneous patterns in the rarefaction curves of TEK species between gender for each categories of use (medicinal, food and handicrafts). Comparing with regional floral diversities, it was predicted that more diverse species would be found in some provinces by carrying out additional survey.

  • https://doi.org/10.7732/kjpr.2017.30.5.481 인용 PDF KSCI

Aspects of Liang Qichao and Choi Namsun's Enlightenment Project (량치차오와 최남선의 계몽 기획 관련 양상)

  • Moon, dae-il
    • The Journal of the Convergence on Culture Technology
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    • v.7 no.2
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    • pp.261-267
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    • 2021

  • The enlightenment project raised in both Korea and China during the modern period worked as a part of the patriotic enlightenment movement against the imperial powers. Among them, "boy" appeared as the subject of enlightenment, and "sea" appeared as a medium. Specifically, through "Boy Discourse," Liang Qi Chao ultimately envisioned a nation for "subjects", and Choi Nam-seon also seeked to overcome the national crisis as "New Korea" and join the ranks of powerful nations. Liang Qiqiao proposes the concept of a "Boy Nation" and an "Old Nation" through boy discourse, and wishing for the development of the "Boy Nation" through "proficiency training". Choi Nam-seon also recognized that the future of the nation depends on "boys", influenced by Liang Qi-qiao's discourse on boys, and argues that Choseon should cultivate skills to become a "Boy Nation". In addition, Liang Qi-chao and Choi Nam-seon actively spread the "boy discourse" through the creation of poetry. Liang Qi Chao introduced the world's geography and history through poetries related to the sea, while at the same time inspiring a sense of challenge to recognize and pioneer the sea as a pathway that connects the world in a broad sense. Namseon Choi also created a poem that directly linked "the sea" and the "boy" to promote the "adventure at sea" and "the progressive spirit of the sea and the boy".

  • https://doi.org/10.17703/JCCT.2021.7.2.261 인용 PDF KSCI

ON NEGATIVE MOMENTS OF PROSITIVE RANDOM VARIABLES

  • Park, Han Shick
    • The Mathematical Education
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    • v.11 no.1
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    • pp.25-27
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    • 1972

  • 본논문은 n이 음이 아닌 정수로서 X＋A>O 일 때, f(x)=(X＋A)$^{-n}$ 모양의 확률변수 X의 기대치를 구하는 문제를 연구한 것이다. 이 문제는 이미 CHAO, STRAWDERMAN에 의해서 연구된바 있으나, 여기서는 더욱 간단하게 단순한 결과를 얻었으며 n=1일 때는 양 결과는 일치한다.

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