• Title/Summary/Keyword: Crux

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Effect of Soil Temperature on the Emergence - Speed of Rice and Barnyardgrasses under Dry Direct - Seeding Condition (토양온도(土壞溫度)가 벼와 피의 출아속도(出芽速度)에 미치는 영향(影響))

  • Kwon, Y.W.;Kim, D.S.;Park, S.W.
    • Korean Journal of Weed Science
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    • v.16 no.2
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    • pp.81-87
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    • 1996
  • Seeds of rice, cv. Ilpoom, and barnyardgrasses(Echinochloa crus-galli, vars. oryzicola, crux-galli, and praticola) were sown for a characterization of their responses to temperature during emergence under a dry direct-seeded condition. A laboratory-made aluminum block apparatus for emergence-temperature control conferred a linear continuous temperature gradient from 10 to $30^{\circ}C$ to the seeds from cooling to heating ends of the apparatus. The lowest temperature for emergence was $12.3^{\circ}C$ for rice cv. Ilpoom, and $11.0^{\circ}C$ for the three varieties of Echinochloa spp.. Percent emergence of rice increased sharply with an increase in temperature by ca. $20^{\circ}C$, then leveled-off, while those of barnyardgrasses increased almost linearly with temperatures up to $30^{\circ}C$. In rice the time required for emergence after seeding was shortened exponentially with increased temperature while those for barnyardgrasses were shortened almost linearly from 11 to $30^{\circ}C$. The temperature-response characteristic of rice in emergence-speed was almost the same among those for the 1st emergence, emergence by 25, 50, 75%, or average emergence time. At $13^{\circ}C$, $346.7^{\circ}C$ days of accummulated temperature(26.67 days) were required for the 1st emergence in rice while 131.7, 136.0, and $138.7^{\circ}C$ days(10.13, 10.46, and 10.67 days) were required for the 1st emergence in E. spp., vars. crus-galli, praticola, and oryzicola, respectively. Greater cold tolerance and increasingly faster emergence of barnyardgrasses than rice below $20^{\circ}C$ seem to render the barnyardgrasses as much more competitive than rice at lower temperatures.

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Performance Analysis on Collaborative Activities of Multidisciplinary Research in Government Research Institutes (국가 출연연구소의 협업적 융합연구 성과 분석)

  • Cho, Yong-rae;Woo, Chung-won;Choi, Jong-hwa
    • Journal of Korea Technology Innovation Society
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    • v.20 no.4
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    • pp.1089-1121
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    • 2017
  • 'Technological convergence' is the recent innovation trend which facilitates to solve social crux as well as to generate new industries. Korean government research institutes (GRIs) have taken a pivotal role for economic growth which capitalized on technology-oriented strategies. Recently, the policy interests on the transition of their role and mission towards multidisciplinary research organization is increasingly shed lights. This study regards the collaborative activities as one of the key success factors in the multidisciplinary research. In this sense, this study sets research purposes as follows: First, we intend to define a concept and to confine a scope of multidisciplinary research from the view point of R&D purposes and problem-solving process. Second, we categorize the collaboration and the relevant performances which reflect the characteristics of the multidisciplinary research. Third, we analyze the characteristics of collaborative activities and the effects of strength on the research performances. To this end, this study conducted a survey of 104 research project directors, which have experienced at least one of two types of multidisciplinary research projects through National R&D project or NST (National Research Council of Science & Technology) convergence research project. Then, we conducted regression analysis by utilizing the survey results in order to verify the relation between the collaborative activities and the performances. As results of analyses, first, the diversification of collaboration partners was a salient factor in the process of knowledge creation. Second, collective works among the researchers in similar area and domain enhanced mission-oriented technology development projects such as patent creation or technology transfer. Third, we verified that the diversity of created knowledge and the degree of relation continuity between researchers increased in the condition of guaranteeing individual researcher's independence and autonomy as well as sharing various technological capabilities. These results provide the future policy directions related to the methods to measure the collaboration and performance analysis for multidisciplinary research.

The Labeling Effect and the Politics of hostile Exclusion in Korean Society - Centered on 'Pro-North Korean leftist Forces'/'Pro-Japanese Dictatorship Forces' - (한국사회에서의 낙인효과와 적대적 배제 정치 - '종북좌파'/'친일독재 세력'을 중심으로 -)

  • Sunwoo, Hyun
    • Journal of Korean Philosophical Society
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    • v.145
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    • pp.271-296
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    • 2018
  • In this article, I intend to reveal critically both the intrinsic crux and main problems of the politics of hostile exclusion based on the effect of labeling which was designed precisely as an impure political technique and has been operated for too long in Korean society by the conservative ruling class that centered on various negative ideological labels like 'pro-North Korean leftist forces.' Firstly, what is called the 'conservative ruling class' in Korean society is in itself an antinationalistic and antidemocratic pro-Japanese dictatorship group. Secondly, the conservative ruling class as a pro-Japanese dictatorship group has utilized politically the labeling effect which regards antigovernment Korean members as pro-North Korean or rebellious persons. This group's hostile politics, based on the ideological labelling effect, deprives antigovernment persons and groups of the qualification of Korean citizenship, in order to hold and retain their supreme power in Korean society. Thirdly, the conservative ruling class has attempted to stigmatize the citizens who participate in a movement for democracy as a pro-North Korean leftist force, but such a politically impure manner is typically completely unjustified groundless labeling. Fourthly, the attempt to define the conservative ruling class as a pro-Japanese dictatorship force is normatively justified and resonably appraised insofar as such a definition has been proved to be worthy of confidence. Finally, the trial to consider Roh's regime and pro-Roh (pro-Moon) groups as a kind of Yeongnam hegemonism by several critical intellectuals and current politicians from Honam region is not only merely a groundless and unconvincing labelling, but also the failed outcome of the attempt to systemize logically their emotional antipathy and repulsion toward Roh and pro-Roh (pro-Moon) groups.

Study on Genealogical Character of Buddhist Dances of Hang Yeon Suk and Lee Mae Bang (한영숙류와 이매방류 승무의 계통적 성향 연구)

  • Jeong, Seong Suk
    • (The) Research of the performance art and culture
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    • no.23
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    • pp.185-212
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    • 2011
  • Buddhist dance (seungmu) is a crux and highlight of Korean traditional dance; its aesthetics and technique are extraordinary, and Korean dance's unique style is well expressed. The Buddhist dance, which has been descended, is divided into Han Yeong Suk style, which is designated as Important Intangible Asset Number 27, and Lee Mae Bang style. While the two dances are same one, area is difference and they have unique style because of genealogical difference. However, studies on Buddhist dance so far have focused on single style's dance, or comparison of regional aspects (Han Yeong Suk dance is from Gyeonggi and Lee Mae Bang dance is from Honam area). But, Lee Byeong Ok suggested traditional artist dance is differed by male dance genealogy and female dance (gibang) genealogy dance, and while folk dance has storng tie with region, but artist dance has weak regional tie. Therefore, the purpose of this thesis is to study genealogical character of Buddhist dance's dancing style, clarifying Han Yeong Suk dance is male dance genealogy and Lee Mae Bang dance is gibang dance genealogy. In other words, among three theses that compared Lee Mae Bang and Han Yeong Suk dances, one analyzing movement, one comparing dance of invocation and one comparing traditional ballad, are re-analyzed from genealogical perspective and characteristics are comparatively analzyed. The overall summary of the genealogical attitude of the Han Yeong Suk and Lee Mae Ban dances is; First, Han's dance has masculinity, upwardness, progressiveness, activeness, outgoing character, boldness and grace, which are character of male dance lineage, while Lee's dance shows feminity, downwardness, backwardness, aesthecity, inwardness, delicacy and coquette. Second, the most expressed parts of the attitude of two dances are genealogical character, and then are original and regional characters. Third, two dances have strong genealogical attitude, but also has anti-genealogical attitude since the gender of descendent was changed, in other words Lee Mae Bang was man, and Han Yeong Suk was woman. Fourth, even though the two Buddhist dances have different genealogy and region, they share similarities as traditional dance descended in the same time period, so there are many common features. In other words, the two dances are Korean nation's dance and from same time period, but they should not be mixed, either. Even though they have small differences, they must keep each genealogy and descend to the next generation.