• 제목/요약/키워드: Life cyle

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Life Cycle of Coryne pusilla Gaertner, 1774 (Hydroida: Corynidae) in Chakyak Island, Korea

  • Park, Jung-Hee
    • Animal Systematics, Evolution and Diversity
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    • 제10권2호
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    • pp.199-205
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    • 1994
  • 실험실내에서 곤봉히드라의 생활사를 조사하였다. 히드라는 생활사 중에 플라눌라 유생 단계와 해파리 단계가 있으나 곤봉히드라의 생활사에는 해파리 단계가 없고 플라눌라 유생 단계만 나타났다. 수정란으로부터 부화한 플라눌라 유생은 약 21시간동안 부착하는데 적합한 저질(substratum)을 찾아 배양기 바닥을 기어다니다가 고착한 다음, 폴립을 형성하였다.

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가족생활주기별 주거소비 및 주거이동 지향성에 관한 연구 (Housing consumption and the propensity of residential mobility over family life cycle)

  • 김순미
    • 가정과삶의질연구
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    • 제14권4호
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    • pp.233-248
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    • 1996
  • The purpose of this study were 1) to identify housing consumption over family life cyle and 2) to analyze the propensity of residential mobility and its contributing factors over family life cycle. For these purposes the 1993 KHPS data was used. The sample in this study consisted of 2,796 couple households. Satistics employed for the analysis were frequencies means and logistic regression analysis. As the number of children and the children's age increased the housing consumption increased. There were many factors such as husband's education satisfaction of health and family relations monthly income wealth debt owning a car home ownership duration of residence and the satisfaction with housing contributing to housing consumption and propensity to move. Those with home ownership higher wealth higher satisfaction with health higher expenditure, longer duration of residence and higher satisfaction with housing tend to move more frequently. However those with low educational attai ment less satisfaction with family relation less income and having no debts were likely to move.

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