• Title/Summary/Keyword: 2000년

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Vegetation Recovery of Burned Area after Forest Fire from Mt. Sirubong (시루봉의 산불 이후 식생회복)

  • Huh Man Kyu;Choi Joo Soo;Jeong Yong Kee;Huh Hong Wook;Moon Sung Gi
    • Journal of Life Science
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    • v.15 no.1 s.68
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    • pp.27-32
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    • 2005
  • The recovery of vegetation in the burned area after forest fire was investigated in Mt. Sirubng, Jinju city, from 1994 to 2000. The floristic composition of a burned area was 37 kinds in 2000. The life from spectra of six sites showed H-D1-R5-e type. This type is similar to the life form which has been usually showed in most of burned areas. Total diversity index of six burned sites showed 2.135 (1996), 3.784 (1998), and 2.948 (2000). whereas, total diversity index of six unburned sites was 2.642 (1996), 2.516 (1998), and 2.723 (2000). Evenness index of six sites showed 1.816 (1996), 2.641 (1998), and 1.925 (2000). The dominant index of burned and unburned areas were 0.012 and 0.250 (1996), 0.031 and 0.261 (1998, and 0.110 and 0.275 (2000), respectively. The degree of succession in the unburned area gradually increased and the burned area was recovered to be similar to the unburned area after three years.

Isolation and Identification of Influenza Viruses from Busan, during 2000-2001 (2000-2001년 부산지역 호흡기 바이러스 발생 양상 비교)

  • 조경순;정명주
    • Korean Journal of Microbiology
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    • v.39 no.2
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    • pp.89-94
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    • 2003
  • Respiratory viruses were isolated from patients with acute respiratory infections in Busan during 2000-2001 and characterized for their antigenic properties. In 2000, 39 out of 43 isolated viruses were identified as influenza viruses and the others were adenoviruses. Among the isolated influenza viruses,23 were type A influenza viruses and 16 were type B influenza viruses. As a result of antigenic characterization, the influenza viruses were determined to A/Sydney/05/97(H3N2)-like, A/Beijing/262/95(H1N1)-like, and B/Harbin07/94-like viruses and serotypes of the isolated adenoviruses were type 1, 2, and 5. In 2001, 56 viruses were isolated and all of the viruses were identified as influenza viruses. They were A/panama/253/99(H3N2)-like and A/Newcaledonia/2007/99(H1Nl)-like viruses when determined by their antigenic properties. The sex distribution of the patients is as follows, 14 males (32.56%),23 females (67.44%) in 2000, and 23 males (41.07%), 33 females (58.93%) in 2001. Occurrence rate was found to be higher in female patients in both years. Age distribution of patients, in 2000, 48.84% of infection occurred in 0 to 1 year old while in 2002, 33.93% occurred among 11-20 year olds. In 2000, occurrence rate was found to be high in January and again in April and various types of viruses were isolated. These results may be useful for vaccine development and establishment of reliable epidemic data.

서기 2000년 연도 표기 대책위 구성

  • Korean Associaton of Information & Telecommunication
    • 정보화사회
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    • s.112
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    • pp.40-42
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    • 1997
  • 우리협회는 3월 11일 긴박한 문제로 떠올라 있는 컴퓨터 프로그램상의 2000년 표기 수정문제에 대처하기 위하여 업계와 공동으로 대책위원회를 구성했다. 대책위 구성은 2000년 표기 수정의 문제가 심각하고 시간적으로 앞으로 3년이 남지 않았다는 촉박함이 있는데다 민간업계의 대응방안 마련이 미흡함에 따라 이루어진 것이다. 2000년 표기 수정과 관련, 이미 한국전산원과 소프트웨어산업협회에서도 추진 계획을 갖고 있으나 이들 기관은 공공부문에 대한 솔루션 개발 방향등을 설정하는 것이며, 협회는 실질적인 솔루션 제공과 이에 대한 용역대가 기준을 마련하고, 사용자.공급자에게 공히 인식을 확산시키기 위해 업계가 선도적 역할을 할 계획이다.

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Change Analysis of Forest Fire Occurrence Frequencies of Spring Season between 1990s and 2000s (1990년대와 2000년대의 봄철 산불발생빈도 변화분석)

  • Yoon, Suk-Hee;Won, Myoung-Soo;Koo, Kyo-Sang;Lee, Myung-Bo
    • Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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    • 2010.06a
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    • pp.170-172
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    • 2010
  • 우리나라에서 집중적으로 발생하는 봄철(2월~4월) 산불을 효율적이고 체계적으로 관리하기 위하여 19년간(1991년~2009년) 발생한 봄철(2월~4월) 산불을 1990년대와 2000년대로 나누어 연대 순기별 산불발생빈도 공간패턴을 분석한 후 산불발생빈도 변화를 비교 분석하였다. 이를 위하여 ArcGIS Ver.9.2를 이용하여 $1km{\times}1km$ 공간 해상도로 IDW(Inverse Distance Weighting, 보간법)분석을 실시하였다. 분석 결과 1990년대 대비 2000년대의 산불발생빈도 변화는 대전을 포함한 충청 내륙과 전남 지역에서 큰 증가폭을 보였다. 또한 1990년대와 2000년대에는 4월 상순에 가장 높은 산불빈도를 나타냈으며, 1990년대 대비 2000년대의 지역별 산불발생빈도 변화가 한반도의 서쪽인 충청지역을 중심으로 호남지역과 인천에서 크게 증가된 것으로 분석되었다.

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고려개발(주)E-construction 사례와 향후 추진현황소개

  • 정철원
    • Construction Engineering and Management
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    • v.2 no.1 s.5
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    • pp.8-11
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    • 2001
  • 요즘 매스컴에서 건설회사 도산 및 부실 등에 대한 보도가 많아지고 있다. 98년 말부터 우려해 오던 건설산업 구조조정이 한창 진행 중에 있으며, 2000년 7월말 현재 100대 건설사중 37개사가 법정관리, 화의, 워크아웃 상태이며, 이후 대형건설업체의 계속되는 부도 등 부실화로 인한 퇴출이 더욱 가속되고 있는 상황이다. 이렇게 건설 회사들이 부실화가 된 원인을 살펴보면, 공사 발주물량은 97년 대비 70{\%}대에 머물고 있는 반면 건설업체 수는 오히려 $60{\%} 정도 증가해 업체별 평균 수주액이 급감하였고, 이에 따라 업체들의 과당 출혈 경쟁으로 수익성이 악화되고 말았다. 그러나 이러한 건설업의 어려운 환경에서도 고려개발(주)는 2000년 당기순이익 176억원 등 ‘89년 이후 12년 동안 순익을 내고 있으며, IMF가 한창이던 98년부터 2000년까지 약 1조2천억원의 수주고를 달성하였다. 또한 2000년 부채비율 $146{\%}$, 자기자본비율 $41{\%}$, 자기자본순이익율 $14{\%}$로 선진건설업체 수준의 재무비율을 확보하여 경영평가 1위를 차지하고 있다. 이러한 원인을 고려개발(주)는 건설산업의 구조조정에서 살아남을 수 있는 해결책은 정보화라고 판단하여 지난 ’95년부터 꾸준히 사내 정보화 정착에 전력하고 있다.

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첨단과학기술현장-컴퓨터 대란('2000년 문제')은 피할 수 있을까?

  • Hyeon, Won-Bok
    • The Science & Technology
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    • v.31 no.5 s.348
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    • pp.76-81
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    • 1998
  • 20세기의 대표적인 얼굴인 컴퓨터가 날짜의 착각때문에 세계의 모든 질서를 발칵 뒤집어 놓을지 모른다는 2000년 1월1일을 바로 1년 반쯤 앞둔 요즘 이른바 '2000년문자(Y2K로 줄임)'에 대비한 준비가 어느 정도 진척되고 있는가? 우리나라를 포함하여 세계의 Y2K대비현황을 알아 본다.

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Palatability and Physicochemical Properties in 2001 Yield Increased by 10% than Normal Level in 2000 (쌀 수량이 평년수준인 2000년 대비 10% 증가한 2001년의 식미 및 이화학특성 비교)

  • Lee, Jeom-Sig;Lee, Jeong-Heui;Yoon, Mi-Ra;Kwak, Jieun;Mo, Young Jun;Chun, Areum;Kim, Chung-Kon
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.58 no.3
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    • pp.292-300
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    • 2013
  • In this study, we examine the palatability and physicochemical properties of rice in the year, when there was 10% increase in yield compared to normal year due to daily temperature range and sunshine hours. The results of the analysis of rice yield over the last 20 years (1993-2012) showed 10% difference between the yield in 2000, which was normal, and that in 2001. With regard to the crop weather condition during the ripening period in 2001 compared to 2000, the daily range and sunshine hours were higher, but the mean temperature was similar. The rice yield in 2001 was 9.8% higher than that in 2000 due to the increased number of spikelets per panicles and ratio of ripened grain. In terms of chemical traits, protein, Mg, and K contents decreased in 2001 compared to 2000, but amylose content increased. Trough and final viscosity assessed with a Rapid Visco Analyser were significantly higher in 2001 than 2000. The quality of cooked rice was measured through the Toyo Mido Meter Glossiness Value (TGV) instead of a palatability score because a sensory test produces relative comparison values rather than absolute values. The correlation coefficients between the sensory evaluation parameters and the TGV in several rice materials harvested in two years showed a highly significant positive correlation ($r=0.81^{**}-0.89^{**}$, n=27-47). TGV was also significantly higher in 2001 than in 2000. The results suggested that the palatability of cooked rice was good in 2001 with about 10% increase in rice yield compared to normal year in 2000 due to daily temperature range and sunshine hours.

Long-term Variations of Trophic State and Phosphorus Loading in Lake Andong, Korea (안동호의 장기간의 영양상태와 인부하량)

  • Kwon, Sang-Yong;Kim, Bom-Chul;Heo, Woo-Myung
    • Korean Journal of Ecology and Environment
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    • v.35 no.4 s.100
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    • pp.249-256
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    • 2002
  • The variation of trophic state was measured in a reservoir (Lake Andong, Korea) from 1993 to 2000. Phosphorus loading from the watershed was estimated by measuring total phosphorus concentration in the main inflowing stream (the Nakdong River). Phosphorus discharge from the pen-type fish farms was estimated from the amount of fish feed and the rate of phosphorus excretion per feed weight. The transparency in summer was about 2.0 m in 1993 and 1994, but it decreased to about 1.2 m in 1997 and 1998, and recovered to about 2.3 m in 1999 and 2000. TP increased from $11-30\;mgP/m^3$ in 1993 to $18-42\;mgP/m^3$ in 1998, but recovered to $8-13\;mgP/m^3$ in 2000, whereas TN decreased slightly from 1.81-2.96 mgN/L in 1993 to 1.17-1.80 mgN/L in 2000. TN/TP ratios decreased from 82-281 in 1993 to 21-143 in 1998, but again increased to 101-209 in 2000 due to the decrease of TP. The average chlorophyll-a concentration in growing season was in the range of $4.8-16.2\;mg/m^3$ from 1993 to 1997, but it decreased to $3.7-5.2\;mg/m^3$ after 1998. Trophic State Index had shown a gradual increase until 1996, and since then it has declined. The major cause of the trophic state recovery is thought to be the removal of fish farms in April 1998.

Caries preventive effects of a school-based weekly mouthrinsing program with sodium fluoride solution for five years (5년간 불소용액양치사업을 실시한 초등학생의 치아우식증 예방효과)

  • Lee, Jung-Hwa;Kim, Jin-Bom
    • Journal of dental hygiene science
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    • v.6 no.2
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    • pp.113-117
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    • 2006
  • The purpose of this study was to evaluate caries preventive effects of a school-based weekly mouthrinsing program with a 0.2% sodium fluoride solution for five years at elementary school in Yangsan city, which were conducted for 330 children of elementary school from 2000 to 2005. The surveyed data was analyzed with SPSS statistical package. The obtained results were as follows; 1. DMF rate was 58.4% before the mouthrinsing program in 2000 and 48.3% after the program in 2005. DMF rate in 2005 decreased by 10.1% compared to DMF rate in 2000. 2. DT index was 2.46 before the mouthrinsing program and 1.70 after the program. DT index in 2004 decreased by 0.76 compared to DT index in 2000. 3. FT index was 0.55 before the mouthrinsing program and 0.37 after the program. Filled teeth due to decay after the program decreased by 0.18 compared to filled teeth before the program. 4. DMFT score was 2.61 before the mouthrinsing program and 1.64 after the program. DMFT score in 2004 decreased by 0.97 compared to DMFT score in 2000. 5. PHP index was 12.12 before the mouthrinsing program and 5.95 after the program. PHP index in 2005 decreased by 6.17 compared to PHP index in 2000.

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