• Title/Summary/Keyword: Life distribution

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Attitudes on Home Education & Soundness of Home Life (가정교육에 대한 태도와 가정건전도)

  • 이영호
    • Journal of Families and Better Life
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    • v.14 no.3
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    • pp.77-90
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    • 1996
  • The purpose of this study was to examine the relationship between the attitudes of parents on home education and soundness of home life. The samples were composed of 629 home educators selected by family life cycle and local distribution. Consequently the findings of this study were that self-confident attitudes on home education have a significant effect on soundness of home life. Also soundness of home life depend on fathers participation in home education.

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An Effective Way to the International Distribution of Korean Medical and Life Science Journals (국내 학술지의 국제적 유통 활성화에 관한 연구 - 의학과 생명과학 분야를 중심으로 -)

  • Kim Sang-Jun
    • Journal of the Korean Society for Library and Information Science
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    • v.40 no.2
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    • pp.457-480
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    • 2006
  • It is essential to conduct an analysis of superior journals, facilitate the international distribution of domestic journals, and determine an effective way to promote a journal's international distribution. This study seeks to determine an effective approach to the international distribution of Korean medical and life science journals and investigates the bibliographies, home pages, and databases about four international distribution factors with regard to 90 journals arranged into three categories. For the effective way of distributing domestic journals internationally, we should develope Korean journals with international standards, record the journals' articles in international and domestic databases, raise the rate of international subscription and holding journals. and publish electronic journals linking their electronic files with many databases.

Prediction of the Suitable Habitats of Marine Invasive Species, Ciona robusta based on RCP Scenarios (RCP 시나리오에 따른 해양교란생물 유령멍게(Ciona robusta)의 서식지 분포 예측)

  • Park, Ju-Un;Hong, Jinsol;Kim, Dong Gun;Yoon, Tae Joong;Shin, Sook
    • Korean Journal of Environmental Biology
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    • v.36 no.4
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    • pp.687-693
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    • 2018
  • The active development of the global marine trade industries has been known to increase the inflows of marine invasive species and harmful organisms into the ecosystem, and the marine ecological disturbances. One of these invasive species, Ciona robusta, has now spread to the Korea Strait, the East Sea, and Jeju Island in connection with the climate change but not the Yellow Sea in Korea. Currently, the spread and distribution of C. robusta is increasingly damaging aquaculture and related facilities. Therefore, this study aims to identify the spread of C. robusta and potential habitats and to secure a data for the prevention of effective management measures due to climate change as well as damage the reduction in future through the prediction of spread. We used environmental variables in BioOracle. Also, the potential habitat and distribution of C. robusta was predicted using MaxEnt, a species distribution model. Two different RCP scenarios(4.5 and 8.5) were specified to predict the future distributions of C. robusta. The results showed that the biggest environmental factor affecting the distribution of C. robusta was the salinity as well as the highest distribution and potential habitats existent in the East Sea and around Jeju Island.

Repair Cost Analysis for Chloride Ingress on RC Wall Considering Log and Normal Distribution of Service Life (로그 및 정규분포 수명함수를 고려한 콘크리트 벽체의 염해 보수비용 산정)

  • Yoon, Yong-Sik;Kwon, Seung-Jun
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.23 no.2
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    • pp.10-19
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    • 2019
  • Management plan with repairing is essential for RC structures exposed to chloride attack since durability problems occur with extended service life. Conventionally deterministic method is adopted for evaluation of service life and repair cost, however more reasonable repair cost can be obtained through continuous repair cost from probabilistic maintenance technique. Unlike the previous researches considering only normal distribution of life time, PLTFs (Probabilistic Life Time Function) which can be capable of handling log and normal distributions are attempted for initial and repair service life, and repair cost is evaluated for OPC and GGBFS concrete. PLTF with log distributions in initial service life is more effective to save repair cost since it is more dominant after average than normal distribution. Repair cost in GGBFS concrete decreases to 30% of OPC concrete due to longer initial service life and lower repairing event. The proposed PLTF from the work can handle not only normal distributions but also log distributions for initial and repair service life, so that it can provide more reasonable repair cost evaluation.