• 제목/요약/키워드: DO

검색결과 63,307건 처리시간 0.066초

국선도 수련 노인의 양생 체험 (Lived Experience of Yangsaeng Exercise through Kouk-Sun-Do among Korean Elderly)

  • 박경숙
    • 성인간호학회지
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    • 제21권1호
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    • pp.62-76
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    • 2009
  • Purpose: The purpose of this study was to provide understanding of the meaning of 'Yangsaeng' through lived experience of the elderly who practiced Kouk-Sun-Do. Methods: A hermeneutic phenomenological methodology developed by Max van Manen was adopted. The data were collected from the interviews and observations on the actual experience of 9 people who were over 65 years old and practiced Kouk-Sun-Do from August to December 2006. Results: The essential themes were discovered as 'body in comfort', 'spouting vigor', 'improving selfconfidence', 'developing one's mind', 'setting oneself in order', 'being aware of the value of Kouk-Sun-Do', 'recognizing importance of value of getting along' Conclusion: Therefore, practicing "Kouk-Sun-Do" is a suitable exercise for the elderly, as an effective nursing interventions for improving the quality of life of older people.

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Phellinus linteus WI-001 균사체의 성장에 미치는 용존산소농도의 영향 및 자동 조절방법 개발 (Effect and Development of Automatic Control of Dissolved Oxygen on Growth of Phellinus linteus WI-001)

  • 김종래;권호균;전계택;이계관
    • 한국미생물·생명공학회지
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    • 제28권5호
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    • pp.285-290
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    • 2000
  • The effects of dissolved oxy-gen(DO) concentration and DO control modes on cell growth in a 4L computer-controlled bioreactor system were investigated using Phellinus linteus WI-001, a producer of protein-polysaccharides having potent anticancer activi-ties. When DO was controlled at about 20%, maximum cell concentration and specific growth rate of the strain were observed to increase 36% and 64%, respectively, as compared to the experiment performed without DO control. By adopting cascade automatic control of DO ar 20% in a mixed automatic control mode using computer-con-trolled program, 19.5g/L of maximum cell concentration was obtained. These results showed that the mixed auto-matic control mode was the effective method for enhancing cell growth of the shear sensitive Phellinus linteus.

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강원도 수산물 분야 e-Marketplace 활성화 방안에 관한 연구 (A Study on the Development of the e-Marketplace on Fisheries Sector in Gangwon Do)

  • 엄광열
    • 통상정보연구
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    • 제7권3호
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    • pp.53-75
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    • 2005
  • Owing to the Digital revolution, Internet Commerce and Electronic Commerce is having a profound influence on the global Market and internal commerce, revolutionizing the way of doing business. e-Marketplace have adopted in order to the reshape of the Fisheries Sector's competitiveness, and it is now being utilized as a major global marketing instrument to develop new customers, save Market transaction costs ad facilitate new work processes. The purpose of this study is to provide a program for activation in e-Marketplace of the Fisheries Sector in Gangwon Do. However, at present, the environment of e-Marketplace Infrastructure in Gangwon Do is very poor. Therefore, this study points out the problems of e-Marketplace of the Fisheries Sector in Gangwon Do and provides many considerations for a program for activation of e-Marketplace.

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서비스 거부공격이 TCP 상태 전이에 미치는 영향 (The Effect of DoS(Denial of Service) Attack on TCP State Transition)

  • 신범석;이재현;권경희
    • 한국정보처리학회:학술대회논문집
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    • 한국정보처리학회 2005년도 춘계학술발표대회
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    • pp.1327-1330
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    • 2005
  • 서비스 거부공격(Denial of Sevice)이란 서버의 자원을 고갈시켜 더이상 정상적인 서비스를 할 수 없도록 하는 공격이다. DoS 공격 중에서 SYN Flooding DoS Attack을 받은 웹 서버는 외부로부터 들어온 공격 패킷에 의해 back log를 소모하게 된다. 그 결과 정상적인 연결 요청에 대해 서비스를 제공하지 못하게 된다. Dos 공격에 관한 다양한 연구가 진행되고 있지만, 본 논문에서는 서비스 거부공격이 TCP 상태 전이에 미치는 영향에 관한 연구를 하였다. 웹 서버의 Tcp 상태정보를 얻기 위해 GetTcpinfo 프로세스를 실행한 후 정상적인 접속을 시도해 보고 정상적인 접속이 진행되고 있는 상태에서 DoS 공격을 시도한다. GetTcpinfo 프로세스에 의해 파일로 저장된 TCP 상태전이 값을 분석하여 DoS 공격이 TCP 상태 전이에 미치는 영향에 대해 알아본다.

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The Physical Environments and Cochlodinium polykrikoides Bloom in the Sea near Naro-Do

  • Lee, Dong-Kyu;Kang, Yoon-Hyang
    • Ocean and Polar Research
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    • 제25권3호
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    • pp.303-314
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    • 2003
  • The initiation of Cochlodinium polykrikoides blooming in the South Sea of Korea occurs in the sea near Naro-Do in late August. In this paper, the relationships of this annual occurrence with the environmental conditions are presented. In early summer, the winds in the sea near Naro-Do are southwesterly and the upwelling occurs in the near-shore area. The favorable winds to the upwelling are relaxed in August and the downwelling favorable northeasterly winds set in around late August. The change of wind direction causes the onshore transport of warm-and-fresh off-shore water into the sea near Naro-Do and a front between near-shore water and off·shore water is formed. Along the front, downwelling occurs and the environmental conditions for the diatom become unfavorable. When the typhoon and storm bring well-mixed East China Sea water into the sea near Naro-Do in September, the conditions for the dinoflagellates become unfavorable and blooming of C. polykrikoides disappears.

A Seroepidemiological Survey of Toxocariasis among Eosinophilia Patients in Chungcheongnam-do

  • Seo, Min;Yoon, Sung-Chul
    • Parasites, Hosts and Diseases
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    • 제50권3호
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    • pp.249-251
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    • 2012
  • There have been several reports on the relationship between toxocariasis and eosinophilia, but all have been limited to the areas of Seoul or Gangwon-do. In the present study, we investigated the seroprevalence of toxocariasis among eosinophilia patients in Chungcheongnam-do, the central district of Korea. Among the 101 patients tested, 51 (50.5%) were identified as positive by Toxocara ELISA, and 46 (45.5%) were confidently diagnosed with toxocariasis because of absence of any other cause of eosinophilia. Whereas 22 of 42 seropositive patients (52.3%) had a recent history of consuming raw livers, especially the cow liver, only 1 of 25 seronegative patients (4%) had done so (P<0.01). From these results, we could confirm that toxocariasis is related to eosinophilia, and infer that ingestion of raw cow liver plays a vital role in the transmission of toxocariasis in Chungcheongnam-do.

장기폭기식 마을배수처리에서 간헐폭기 및 DO제어에 의한 질소제거 및 에너지 절약(지역환경 \circled3) (Energy Saving and Nitrogen Removal by DO Control and Intermittent Aeration Using Extended Aeration System)

  • 김형중;김선주;단헌이
    • 한국농공학회:학술대회논문집
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    • 한국농공학회 2000년도 학술발표회 발표논문집
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    • pp.599-604
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    • 2000
  • A laboratory scale extended aeration system was installed to study the effects of DO control and intermittent aeration on energy saving and nitrogen removal. The sensors of pH, DO, ORP, MLSS, and WT were installed in the aerator to monitor them and automatically control DO concentration as 2 mg/$\ell$. In the conditions showing nitrate knee on the ORP curves, nitrogen removal rates were kept over 91%. A 72.4 % of energy saving was achieved by intermittent aeration comparing with continuous aeration.

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WeDo 2.0을 활용한 로봇 프로그래밍 교육이 학습자의 로봇에 대한 흥미에 미치는 영향 (Effect of Robot Programming Education using WeDo 2.0 on Learner's Interest in Robots)

  • 박혜란;김성원;이영준
    • 한국컴퓨터교육학회 학술대회
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    • 한국컴퓨터교육학회 2018년도 동계학술대회
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    • pp.33-34
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    • 2018
  • 학업성취도를 결정짓는 중요한 변인 중 한 가지는 학습에 대해 학습자가 가지는 흥미이다. 따라서 보다 효과적인 로봇 프로그래밍 교육을 위해서는 학생이 로봇에 대해 가지는 흥미를 높여주는 것이 필요하다. 본 연구에서는 초등학생이 로봇에 대해 가지는 흥미를 향상시키기 위해 WeDo 2.0을 활용한 로봇 프로그래밍 교육을 실시한 후 효과를 검증하였다. 그 결과, WeDo 2.0을 활용한 로봇 프로그래밍 교육이 로봇 학습에 대한 흥미와 로봇 학습에 대한 자신감 향상에 효과가 있음을 알 수 있었다. 그러나 본 연구는 WeDo 2.0 활용 로봇 프로그래밍 교육을 실시한 집단만을 대상으로 하여 진행되었으므로 통제집단과의 비교를 통해 보다 정확한 변인을 조사하는 후속 연구가 진행될 필요가 있다.

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강원도 무역업체 e-Trade 활성화방안에 관한 연구 (A Study on a Program for Activation of e-Trade of the Traders in Kangwon Do)

  • 엄광열
    • 통상정보연구
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    • 제6권2호
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    • pp.147-168
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    • 2004
  • Owing to the digital revolution, Internet Commerce and Electronic Commerce is having a profound influence on the global trade and internal commerce, revolutionizing the way of doing business. e-Trade have adopted in order to the reshape of the International Trade enterprise's competitiveness, and it is now being utilized as a major export marketing instrument to develop new customers, save export transaction costs ad facilitate new work processes. The purpose of this study is to provide a program for activation in e-Trade of the International Trade enterprise in Kangwon Do. However, at present, the environment of e-trade Infrastructure in Kangwon Do is very poor. Therefore, this study points out the problems of e-trade of the International Trade enterprise in Kangwon Do and provides many considerations for a program for activation of e-Trade.

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실험계획법과 WAVE 시뮬레이션을 이용한 엔진 작동 변수의 영향도 평가 및 최적화에 대한 연구 (Application of WAVE Modeling in Combustion performance of SI Engines Using DoE Methodology)

  • 정동원;처거;서열러;임옥택
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2008년도 추계학술대회B
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    • pp.2922-2927
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    • 2008
  • The test of engine performance using the engine dynamometer needs technical researchers and facilities. A variety of CAE analysis programs and DoE(Design of Experiments) are used to analyze data efficiently instead of tests. The study got data from simulations of WAVE that used to model the SI engine to identify performance of engine. DoE makes it possible to know effectiveness of factors for power, BSFC, volume efficiency and find optimum condition in each factor through minimizing number of experiments. CA50 has effect on power and BSFC as volume efficiency is related with cylinder liner temperature and heat coefficients. The final result in DoE could be identified of consistency above 98% after substituting the data to WAVE.

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