• Title/Summary/Keyword: 1980s

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On the Srivastava's Theorem for the search design.

  • Um, Jung-Koog
    • Journal of the Korean Statistical Society
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    • v.9 no.2
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    • pp.126-134
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    • 1980
  • In this paper, Srivastava's Theorem for the search design is considered, with additional assumptions, to the $3^n$ parallel flats fractions. It is also expressed in terms of ACPM.

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The Flora of Higher Fungi in Mt. Mudeung Area(II) (무등산일대(無等山一帶)의 고등균류상(高等菌類相)(II))

  • Cho, Duck- Hyun;Lee, Ji-Yul
    • The Korean Journal of Mycology
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    • v.9 no.2
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    • pp.73-76
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    • 1981
  • One hundred specimens of higher fungi were collected at Mt. Mudeung area from April to October, 1980. These higher fungi were identified and classified into 2 classes, 2 subclasses, 7 orders, 14 families, 21 genera and 33 species. Among them, Baeospora proved to be new genus in Korea. And Baeospora myosura (Fr.) Sing., Marasmius purpureostriatus Hongo, Psathyrella gracilis (Fr.) Quel., lnocybe sphaeospora Kobayasi and Trametes coccinea Fr. were found to be new in Korea.

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The Flora of Higher Fungi in Mt. Mudeung Area(I) (무등산(無等山) 일대(一帶)의 고등(高等) 균류상(菌類相)(I))

  • Cho, Duck-Hyun;Lee, Ji-Yul
    • The Korean Journal of Mycology
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    • v.8 no.2
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    • pp.95-98
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    • 1980
  • More than 100 specimens of higher fungi were collected at Mt. Mudeung area during the period of 1979 to May, 1980. These higher fungi were identified and included 2 clas­ses, 6 orders, 18 families, 32 genera and 45 species. Among them, Hygrophorus imazekii Hongo, Xeromphalina cauticinalis (Fr.) $K{\ddot{u}}hner$ et Marie, Paneolus campanulatus (L. ex Fr.) $Qu{\acute{e}}l$. and Cortinarius melliolens P.D. Orton were new to be Korea.

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Assessment of Coal Dust Exposure in Korean Mine in 1980's (1980년대 초 한국 석탄 탄광의 자료를 이용한 로그-정규분포의 적용)

  • Lee, Kiyoung;Sherwood, R.J.
    • Journal of Korean Society of Occupational and Environmental Hygiene
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    • v.22 no.4
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    • pp.345-352
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    • 2012
  • 1980년대 초 Sherwood교수가 한국에 와 있으면 당시 탄광의 호흡성먼지의 농도를 측정한 자료를 활용하여 로그-정규분포에 대한 분석을 한 자료이다. 탄광의 건조상태에서 농도는 물을 뿌리면서 하는 작업에 비해 매우 높은 수준을 보인다. 건조한 탄광에서 기하평균농도는 $26.1mg/m^{3}$이었고 물을 뿌린 탄광에서는 $4.1mg/m^{3}$이었다. 이는 매우 높은 수준이었음을 알 수 있다. 각 탄갱에서의 농도는 로그정규분포를 하였고 석탄을 접하는 탄갱에서의 농도는 $1.65mg/m^{3}$에서 $35mg/m^{3}$까지 다양하였다. 호흡성분진의 농도는 석탄을 접하는 탄갱에서 암석을 접하는 탄갱보다 높았는데 이는 분진의 원인이 석탄 때문이었다.

초고속선의 선형 및 조파저항

  • 이영길
    • Bulletin of the Society of Naval Architects of Korea
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    • v.32 no.1
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    • pp.17-20
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    • 1995
  • 고전적인 고속선형에서 탈피한 새로운 형태의 고속선형에 대한 효시는 1960년경의 수중관통형 수중익선의 개발이라 할 수 있다. 그 후, 1980년대까지는 일반적인 중,저 속의 화물선 및 LNG 운반선에 대한 유체역학적 특성의 향상을 위한 선형 개발 경쟁이 국내외적으로 활발하게 진행 되어져 왔다. 그러므로, 이러한 기간중인 약 20여년간은, 선박의 선형 개발면에서는 기존의 선 박형태를 탈피하지 못한 채 유체역학적 성능을 향상시키려는 소극적인 진전이 있었을 뿐, 발전이 매우 더딘 편이었다. 1980년대 후반에 들어서 국내외적인 물동량의 증가와 해상고속운송의 필 요성이 대두되면서 고속선의 개발에 대한 열기가 시작되었다. 그간의 고속선개발은 주로 미국을 중심으로 군사적인 목적면에서 진행되어 왔고, 일본은 거의 일반상선의 선형개발에 중점을 두어 왔으나, 1980년대 후반부터는 일본도 아시아지역에서의 물동량변화와 고속화의 필요성에 따라 고속선 개발에 뛰어들게 되었다[1, 2, 3]. 특히 최근의 50knots를 넘는 대형의 화물운송용 초고 속선 개발은 주목할 만한 연구가 되고 있다'4'. 국내에서도 1990년대에 들어서면서 소형이지만 이러한 초고속선의 선형개발을 시작하게 되었으며, 실용화된 예도 몇몇을 가지고 있다. 본고에 서는 이제까지 연구된 몇가지 초고속선형들에 대한 예와 장단점, 또한 조파저항 성능면에 대해 기술하여 보고자 한다.

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Labor Market Participation among Young College-Educated Women (젊은세대 고학력여성의 노동시장참여)

  • 이미정
    • Korea journal of population studies
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    • v.25 no.2
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    • pp.139-161
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    • 2002
  • In 1987, the Equal Employment Opportunity Law was enacted, which indicated the institutional regulation against gender-discriminatory labor practices. Until the late 1980s, women were forced to quit upon marriage. It had influenced negatively on women status in the labor market. In this paper, 1 try to examine how the institutional change affects young educated women's work behaviors. The change of the education and family effect on work will be examined. For analysis, data from 2002 Women's Work Survey is employed. The results show the followings. Among women of young generation, negative effect of education has disappeared and turned out to be positive among the never married. But, marriage and the family responsibility still influence negatively on young women's participation into the labor market. In making a decision to work, husband's attitude is more important than wife's own. But, among the single, women's own attitude toward work plays an important role. In overall, women of young generation is also influenced by the family responsibility as much as the previous generation. The negative effect of marriage and the family responsibility on women's working is stronger among the college educated women.

Development of Water Quality Modeling in the United States

  • Ambrose, Robert B;Wool, Tim A;Barnwell, Thomas O.
    • Environmental Engineering Research
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    • v.14 no.4
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    • pp.200-210
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    • 2009
  • The modern era of water quality modeling in the United States began in the 1960s. Pushed by advances in computer technology as well as environmental sciences, water quality modeling evolved through five broad periods: (1) initial model development with mainframe computers (1960s - mid 1970s), (2) model refinement and generalization with minicomputers (mid 1970s - mid 1980s), (3) model standardization and support with microcomputers (mid 1980s - mid 1990s), (4) better model access and performance with faster desktop computers running Windows and local area networks linked to the Internet (mid 1990s - early 2000s), and (5) model integration and widespread use of the Internet (early 2000s - present). Improved computer technology continues to drive improvements in water quality models, including more detailed environmental analysis (spatially and temporally), better user interfaces and GIS software, more accessibility to environmental data from on-line repositories, and more robust modeling frameworks linking hydrodynamics, water quality, watershed and atmospheric models. Driven by regulatory needs and advancing technology, water quality modeling will continue to improve to better address more complicated water bodies and pollutant types, and more complicated management questions. This manuscript describes historical trends in water quality model development in the United States, reviews current efforts, and projects promising future directions.

A Study on the Regionality of Korean Catholic Church Architecture with the Perspective of The Critical Regionalism - Focused on Korean Modern Catholic Churches constructed between the 19th century and 1980's - (비평적 지역주의(The Critical Regionalism)로 본 한국 성당건축의 지역성 표현 - 개화기에서 1980년대까지의 성당건축을 중심으로 -)

  • Kweon, Tae-Ill
    • Journal of architectural history
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    • v.21 no.1
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    • pp.27-46
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    • 2012
  • The core idea of the critical regionalism could be summarized as a self-conscious synthesis between universal civilization and world culture. After World War II, it has been applied to architecture for overcoming the problem of Industrial Capitalism and uniformity of 20th century Modern Architecture. Naturally, religious architecture cannot also be an exception in this cultural trend, thus we can also apply the critical regionalism to the Korean Catholic Church Architecture with the basic premise that the Traditional Western and Modern Style Church Architecture should be regarded as universal civilization, and the Traditional Korean Architecture and endemicity as one of world culture. In the context, this article attempts to analyze the regionality of Korean Modern Catholic Church Architecture constructed between the 19th century and 1980's, and how it has been differently transformed with the view of the critical regionalism. Its analysis will be carried out within three types; transformation of the Traditional Korean Architecture and the influence of Japanese Modern Architecture, representation of the Traditional Korean Architecture, and abstraction of the Traditional Korean Architecture with each advantages and disadvantages.

The Reorganization and Institutional Characteristics of National Records Management System during the 1980s to the 1990s (1980~90년대 국가기록관리체제의 개편과 제도적 특징)

  • Lee, Seung-Il
    • Journal of Korean Society of Archives and Records Management
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    • v.8 no.2
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    • pp.5-38
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    • 2008
  • Under the changes of administrative systems and office automation, 'the national record management system' had been reformed until 'Record Management Act' was enacted in 1999. Between 1984 and 1992, the national record management system was reformed in process of overcoming national crises and carrying out office automation. As a result, the system was absorbed into 'Governmental Document Regulations', 'Official Document Management Regulations' and 'Governmental Document Regulations'. In addition, 'government document classification scheme' and 'Record schedule' were unified into 'Official Document Classification and Record schedule'.

The Development and Future Prospect of Pair Trawling in Korean Waters since 1980's (1980년대 이후의 쌍끌이 대형(大型) 기선저인망(機船底引網) 어구(漁具)·어법(漁法)의 발달(發達)과 전망(展望))

  • Lee, Byoung-Gee;Lim, Han-Sup
    • Journal of Fisheries and Marine Sciences Education
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    • v.5 no.2
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    • pp.90-97
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    • 1993
  • Pair trawling is one of the important fishing methods for Korean fisheries, and is working in the western sea of Korea - the Yellow Sea and the East China Sea. On the engine power of the trawlers, 72% of 190 pairs of trawlers were equipped with 450ps class engine, and 21% with 450~750ps and merely 7% with in 750ps class 1980. Thereafter the engine power has grown up, so that 450~750ps occupy 28% and 750ps or more 27% in 1992. Main objective fishes of pair trawling were traditionally flat fishes, so the fundamental shape of pair trawl net was a four - seam net, but by the gradual shortage of flat fishes, roundfishes has been noticed. So the six - seam net which performs high opening of net mouth has been used widely since 1985. In the six - seam net, the length of wing was not so short in the beginning but became short in the later instead of the net pendant elongated, and also the pendant was separated into three pieces according to the change of wing structure. Since the 1990's, the objective fishes has gradually been changed into pelagic fishes, the fishing technique is required to fit the behavior of fishes. So the midwater trawling or the multi -layer trawling became required.

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