• Title/Summary/Keyword: 대서

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연구실 탐방 - 건국대학교 액정연구센터

  • Korean Federation of Science and Technology Societies
    • The Science & Technology
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    • v.30 no.7 s.338
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    • pp.90-91
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    • 1997
  • 우리나라 대학에서 유일하게 액정연구를 하는 건국대 액정연구센터는 소장인 김용배교수가 일본 동경대서 박사학위를 받고 돌아온 79년부터 꾸준히 연구활동을 펴오고 있다. 17명의 연구원으로 구성된 이 연구센터는 지금까지 30명의 석ㆍ박사를 배출했으며 액정 구성재료서부터 제조장비까지 개발하는 작업을 계속하고 있다.

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"국립공원에 대한 인식" 바로 잡아야

  • Kim, Yong-Geun
    • 공원문화
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    • s.50
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    • pp.20-21
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    • 1991
  • 이 글은 본회 학계회원이며 미국 Texas A&M대서 관광위약학 박사(국립공원자원관리)학위를 취득한후 동신대 환경조경학과에 재직중인 김용근교수가 세계일보사서 심층특집으로 연재해온 "르포 국립공원"에 대한 관계학자로서의 소감과 우리나라 국립공원이 당면한 주요한 문제의 정곡을 찌른 것이 요약됐기에 세계일보사의 노고에 감사하면서 필자의 협조로 전재한다.

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Authigenic Neodymium Isotope Record of Past Ocean Circulation (과거 해수 순환을 지시하는 해수기원 네오디뮴 동위원소 비 기록)

  • Huh, Youngsook;Jang, Kwangchul
    • The Journal of the Petrological Society of Korea
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    • v.23 no.3
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    • pp.249-259
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    • 2014
  • Proxies for paleo-circulation are drawing much interest with the recognition that ocean circulation plays an important part in the redistribution of heat and climate change on orbital and millennial timescales. In this review, we will introduce how neodymium isotope ratios of the authigenic fraction of marine sediments can be used as a proxy for ocean circulation along with analytical methods and two case studies. The first case study shows how the North Atlantic Deep Water (NADW) has varied over the glacial-interglacial and stadial-interstadial periods. The second case study shows how the freshwater budget and water circulation within the Arctic Ocean can be reconstructed for the last glacial period.

Experiences of Nurses Working in a Single-Room-Structured Intensive Care Unit (전 병상 1인실 구조인 중환자실에 근무하는 간호사의 경험)

  • Youn, Jung Hee;Shin, Young Mi;Shin, Su Jin;Hong, Eun Min
    • Journal of Korean Critical Care Nursing
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    • v.14 no.3
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    • pp.1-13
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    • 2021
  • Purpose : This study aims to provide basic data for effective nursing interventions and improvement of nurses' work by exploring their work experiences in single-room-structured intensive care units (ICU) through focus group interviews. Methods : Data were collected through two focus group discussions conducted from March to November 2020 with 13 ICU nurses. Interviews were audio-recorded and analyzed thematically by investigators. Results : Through content analysis, 15 sub-categories and 6 categories were formed. Two themes, "positive experiences patients care in an independent space" and "difficulties in nursing work according to space separation of patients" emerged. There are positive aspects of single-room-structured ICUs, but it was found that practicing nurses had difficulties and required specialized nursing competencies. Therefore, efforts to reduce the burden of nurses in single-room-structured ICUs are necessary. Conclusion : The limitation of this study is that it was conducted in a single hospital because single-room-structured intensive care units are uncommon in Korea. However, this study is of great significance as a basis for establishing guidelines on the efforts required from nurses, hospitals, and governments single-room-structured ICUs in the future.

High Occurrence Conditions of Hollow Heart and Internal Brown Spot in Potatoes (Solanum tuberosum L.) (내부갈색반점(內部褐色斑點)과 내부공동(內部空洞) 저항성(抵抗性) 감자 계통 선발을 위한 다발성(多發生) 조건 구명(究明))

  • Lim, Hak-Tae;Khu, Dong-Man;Chun, Ik-Jo;Yang, Sung-Ji
    • Horticultural Science & Technology
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    • v.19 no.4
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    • pp.455-458
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    • 2001
  • To screen potato clones with high resistance to hollow heart (HH) and internal brown spot (IBS), field conditions were set up to induce high frequencies of physiological disorders in 'Atlantic' potato through various treatments of mulching, periodic shadings, and plant growth regulators such as trinexapac-ethyl (Tr-E) and dicloprop-triethanol mine (DTA). IBS occurrence was as high as 67.5% in the field plot mulched with transparent film and shaded for 10 days beginning at 80 days after planting. The highest level of HH was 22.9% in the plot mulched with transparent film and shaded for 10 days beginning at 60 days after planting. Very high level of IBS (66.3%) also occurred in the plot treated with 1500 mg/L of Tr-E 40 days after planting, while HH occurred by 21.3% in the plot treated with 1000 mg/L of DTA 70 days after planting. In the plots which were treated with 1,500 mg/L of Tr-E after 40 days of planting and 1000 mg/L of DTA after 70 days of planting, 'Superior' (moderately highly resistant) and 'Atlantic' (very susceptible) could be clearly distinguished to be resistant and susceptible. High occurrence condition set up in this study could be applied for the potato breeding program to screen potato clones with high resistance to HH and IBS.

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Mass production of potato shoots by liquid culture (액체배지를 이용한 조직배양 감자줄기의 대량증식)

  • Kim, Jae-Whune;Choi, Eun-Gyung;Kim, Jeong-Kook
    • Journal of Plant Biotechnology
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    • v.36 no.1
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    • pp.1-6
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    • 2009
  • A study was conducted to investigate in vitro micro propagation of four potato cultivars of Daese, Jasim, Chubaek and Haryeng in MS medium and PM medium (a medium containing half concentration of $NH_4NO_3$ and $KNO_3$, two fold concentration of $CaCl_2$ as compared to MS medium). During $1{\sim}2$ weeks of culture, Daese and Jasim showed better shoot elongation on the solid MS medium than Chubaek and Haryeng whereas Chubaek and Haryeng did better shoot elongation on the solid PM medium. But no difference was observed after 4 weeks of culture. As compared to shoot elongation on the solid medium, it was delayed at early stage of culture in the liquid medium without shaking. Shoot formation ratio of potato (above 4 cm of shoot length) began to increase significantly after 1 week of culture and kept on increasing until 4 weeks. The four cultivars showed the different patterns of shoot growth in bioreactor. The PM medium with a quarter salt strength was effective for the regeneration of axillary buds as well as shoot elongation of Jasim and Chubaek. Daese showed vigorous regeneration of axillary buds in the PM medium with a half salt strength. On the other hand, Haryeng showed slower growth than the other three cultivars.

여류과학자 - 경희대 권순자 교수

  • Korean Federation of Science and Technology Societies
    • The Science & Technology
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    • v.30 no.11 s.342
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    • pp.84-85
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    • 1997
  • 英 브라운대서 '핵산분자간의 상호작용(분광학적인 방법으로 수소결합 및 수소성결합의 측정)'으로 박사학위를 받은 경희대 화학과 권순자 교수. '한 우물만을 파라'는 아버지의 교훈에 따라 생화학 외길을 걷고 있는 권교수는 "여자 연구원들은 선진국 과학자들의 창의력과 아이디어에 도전하기 위해서 해외 유학생활을 꼭 거치는 것이 좋다"고 권하고 있다.

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Bitrate Allocation Method among Sources of Higher Layer for Spatial Scalable Video Coding (공간계층형 영상부호화해서 상위계층 영상간 부호화율 배분방법)

  • 권순각;최재각;박수현;김태석
    • Proceedings of the Korea Multimedia Society Conference
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    • 2001.11a
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    • pp.6-11
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    • 2001
  • 본 논문에서는 서로 다른 공간해 상도를 갖는 두계층 영상부호화대서 하위계층에는 낮은 우선순위로 인하여 제한된 일정부호화율로 부호화하고, 반면에 각 영상의 상위계층에는 우선순위를 높게 하면서 서로간 균등한 화질을 제공하는 대역할당 방법을 제안한다. 이를 위해서 MPEG-2 공간계층적 부호화구조에서 부호화율-왜곡의 관계를 찾고, 실시간으로 상위계층 영상 사이에 균등한 화필을 제공하는 부호화율 제어방법을 제안한다.

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이달의 과학자 - 홍익대 전자전기공학부 김발호교수 '전력처리' 세계 최고기술

  • Korean Federation of Science and Technology Societies
    • The Science & Technology
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    • v.35 no.12 s.403
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    • pp.32-33
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    • 2002
  • 홍익대 전자전기공학부 김발호교수(40세)는 한전 전력연구실부터 전력경제분야에 몸담아 오면서 지금까지 '최적조류계산' 및 '최적조류계산의 분산처리' 연구에 몰두하고 있다. 김교수는 현재 홍익대서도 이 분야의 연구를 주도적으로 수행하고 있다. 분산처리기술은 한국과 스페인, 미국이 보유하고 있는 원천기술은 김교수가 가지고 있으며 세계 최고의 기술수준이다.

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연구여적 - 의사 아닌 학문의 길 보람의 삶

  • Maeng, Gwang-Ho
    • The Science & Technology
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    • v.32 no.7 s.362
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    • pp.76-77
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    • 1999
  • 의과대학 동기 65명중 예방의학자의 길을 택한 사람은 나 하나 뿐이었다. 밤낮 구별없이 대학서 지세운 대학 조교생활 4년, 국내서 박사학위를 받고 미국으로 유학, 하와이대서 '질병역학과 통계학 연계과정' 박사학위를 받을 때까지 연구현장에서 젊음을 불태운 삶의 여정에 지금 나는 만족한다. 젊어서 연구에 많은 시간을 보내고 나이가 들어서 교육에 시간을 보내는 학문의 길은 내가 선택한 가장 적합한 길이라고 확신한다.

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