• 제목/요약/키워드: REARING

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누에의 인공사육개발에 관한 연구 (Study on the Improvement of Artificial Diets for the Silkworm Rearing)

  • 김윤식
    • 한국잠사곤충학회지
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    • 제14권2호
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    • pp.67-72
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    • 1972
  • 사료 조성에 건물량의 반량가량 상엽분말을 혼합하여 조제한 인공사료육에서 좋은 성적은 얻지못했다고 할지라도 인공사료육은 가능하며 앞으로의 연구에 기대한다. 특히 무균사육은 잠사과학 연구 발전에 공헌할 수 있을 줄 생각된다. (1) 발육속도가 부진한것은 사육온도와 사료의 물리적성질과도 관계가 있다고 생각되며 사료의 수분율은 높고 누에의 사육온도는 섭식을 촉진할수 있는 생리에 크게 해롭지 않는 적온 내지 3$0^{\circ}C$의 고온이 좋다고 생각된다. (2) 무균사육잠의 발육은 자연폭로의 인공사육잠보다 완만하며 이것은 방부제에 의한 장해라고 생각된다.

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Infant-rearing experiences of parents during the COVID-19 pandemic in South Korea: a mixed-methods approach

  • In-Hye Song;Kyung-Ah Kang
    • Child Health Nursing Research
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    • 제30권1호
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    • pp.31-44
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    • 2024
  • Purpose: This study aimed to identify the infant-rearing experiences of parents during the coronavirus disease 2019 (COVID-19) pandemic and provide foundational data for the development of infant-rearing support programs during pandemic situations. Methods: Convergent mixed methods were used to better understand the research outcomes by converging both quantitative and qualitative data. A total of 149 parents with infant-rearing experiences during the pandemic responded to a self-report survey, and 10 parents participated in the interviews. Data were analyzed using Colaizzi's method, descriptive statistics, t-test, one-way analysis of variance, the Scheffé test, Pearson correlation coefficients, and hierarchical regression. Results: Analysis of qualitative data yielded the following three categories: five theme clusters, ten themes, and thirty-nine subthemes. The factors influencing infant-rearing behavior were nuclear family (β=.34, p<.001) and rearing stress (β=-.39, p<.001). The explanatory power of the regression equation was 26.6%. Conclusion: Infectious disease disasters, such as the COVID-19 pandemic, can quickly alter infant-rearing conditions, causing heightened parental anxiety. This may affect infant-rearing behaviors and hinder healthy infant development. Future research should develop a comprehensive tool to measure holistic health-related parenting behaviors across the different stages of child development. Additionally, pediatric nurse practitioners can play an active role in educating parents, supporting parenting, and promoting healthy infant development in their communities, making pediatric nurse practitioners a highly relevant and necessary healthcare profession during infectious disease disasters. Thus, there is a need to improve institutions and build infrastructure at the national level to support them.

Scanning Electron Microscopic Studies on Leaf Surface Trichomes in Mulberry and Its Influence on Rearing Performance of Silkworm Bombyx mori L.

  • Kesavacharyulu, K.;Kumar, Vineet;Sarkar, A.
    • International Journal of Industrial Entomology and Biomaterials
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    • 제8권1호
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    • pp.33-41
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    • 2004
  • The type of trichomes, their density and pattern of distribution on leaves of 16 genotypes of mulberry, belonging to both diploid and polyploid categories, were studied by scanning electron microscope. The present investigation was undertaken to find out the relationship of physical attributes, especially the density and trichome types with higher acceptability and better rearing performance by the silkworm Bombyx-mori L. Two types of trichomes glandular and non-glandular types were observed on both the leaf surfaces of all the mulberry genotypes studied. In general, greater densities of trichomes were observed on the abaxial surface than the adaxial surface of leaves in most of the genotypes. Distribution of glandular trichomes were more in abaxial surface and non-glandular trichomes were more in adaxial surface. Overall, distribution of glandular and non-glandular trichomes per unit area of leaf did not follow any regular pattern. When leaves of those genotypes were fed to silkworms, trichome density was found to be significantly negatively correlated with the survival of larvae i.e., effective rate of rearing, but trichome density did not influence the economic characters of rearing. As the distribution of glandular trichomes (GT) and non-glandular trichomes (NGT) did not follow any definite pattern, no relation could be established between the GT and NGT densities with silkworm rearing performance. However, the ratio of GT and NGT in a particular genotype influenced the rearing parameters, higher the ratios better the rearing performance. High GT and NGT ratio (>1.00) was found positively significant when correlated with economic parameters viz., larval weight, single cocoon weight and single shell weight. The study is useful in screening different mulberry genotypes for their better acceptability to silk-worm and higher rearing performance at the early stage of selection without actually conducting the rearing.

간이잠실(簡易蠶室)의 난방(暖房) 부하특성(負荷特性) 및 보온(保溫)커튼 설치효과(設置効果)에 관(關)한 연구(硏究)(I) -간이잠실(簡易蠶室)의 난방(暖房) 부하계수(負荷係數) 및 최대(最大) 난방부하(暖房負荷)- (Study on Heating Load Characteristics and Thermal Curtain Effects for Simple Silkworm Rearing Houses(I) -Heating Load Coefficient and Maximum Heating Load-)

  • 최광재;이동현;박경규
    • Journal of Biosystems Engineering
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    • 제15권4호
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    • pp.346-354
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    • 1990
  • In order to provide basic references for the design of heating on simple silkworm rearing house, the actual change of heating load coefficient by progress of adult silkworm rearing day from the reared in silkworm rearing house, the heating load coefficient by types of silkworm rearing houses and the heating requirement and the maximum heating load by types of silkworm rearing houses were determined. The results obtained from the study were as follows : 1. The average heating load coefficients of NS, OS and CC type simple silkworm rearing houses were $24.1KJ/m^2-hr-^{\circ}C$, $19.8KJ/m^2-hr-^{\circ}C$, and $10.8KJ/m^2-hr-^{\circ}C$, respectively. 2. The change of heating load coefficient by progress of silkworm rearing day after reared into simple silkworm rearing house could be expressed as Fig. 4. 3. Heating degree-hour for adult silkworm rearing in Suweon district was calculated as $951.6^{\circ}C-hr$ for spring season and $610.5^{\circ}C-hr$ for autumn season. 4. Yearly heating requirement of the NS type was estimated twice more than that of the CC type. Thus, some kinds of reinforced thermal adiabatic facilities is desirable for NS type. 5. The time for maximum heating load was turned out at the 4th instar during the spring season and after the mounting during the autumn season. 6. This study was performed in Suweon district. However, the estimated and analyzed data could be adapted to the major silkworm rearing district if their meteorology data were adjusted.

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취업모와 미취업모의 양육태도, 양육부담감 및 학령전기 자녀의 기질과 건강관련 변인 비교 (Childrearing Attitude and Burden of Employed and Unemployed Mothers and Temperament and Health Related Variables of Their Preschool Children)

  • 방경숙
    • Child Health Nursing Research
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    • 제10권2호
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    • pp.217-224
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    • 2004
  • Purpose: This comparative descriptive study was conducted to determine the effects of maternal employment on the maternal child-rearing attitude, child-rearing burden, and temperament and health related variables of their preschool children. Method: Samples were recruited in child care centers in Seoul, Daejeon, and Suwon. 209 mothers with children age of three to six participated. Result: Employed mothers showed more positive child-rearing attitude, but there was no significant difference in child-rearing burden, Also, maternal attitude and child-rearing burden were influenced by satisfaction on the employment state. Children's temperament subscales were not different in two groups. Breast feeding and compliance on vaccination were done better by unemployed mothers. However, home safety, experience of accident and hospitalization of children were not affected by maternal employment. Conclusion: Maternal employment has positive influence in some aspects. This study provides basic data for parent counseling and anticipatory guidance for employed mothers.

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첫자녀에 대한 어머니의 양육행동 및 관련변인 (Mother's Child Rearing Practices: Variables Related To The First-Born Child)

  • 임희수;박성연
    • 아동학회지
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    • 제15권2호
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    • pp.153-168
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    • 1994
  • The purpose of this study was to examine mother's child rearing practices by mothers of their first-born child as a function of child's sex, temperament, and social class and of mother's marital satisfaction. The subjects were 158 mothers of 3-year-old first-born children in Seoul. Block (1984)'s CRPR, Buss and Plomin (1975)'s EAS, and Roach et al.'s MSS (1981) were used to measure maternal child rearing practices, children's temperament, and mother's marital satisfaction, respectively. The statistical methods for data analysis included t-test, ANOVA, Duncan's multiple range test, multiple regression. The major findings showed there were no sex of child differences in child rearing practices. Social class differences were found in "encouragement of independence", "enjoyment of child" and "openness to experience" in maternal child rearing practices. There were differences in maternal child rearing practices by child's temperament and mother's marital satisfaction. In a multiple regression analysis, it was found that the most significant predictor of maternal child rearing practices was mother's marital satisfaction.

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부모의 양육태도가 가족응집성과 청소년의 자존감에 미치는 영향 (Influence of Parents' Child Rearing Attitudes on Family Cohesion and Self-esteem in Adolescents)

  • 고명숙
    • Child Health Nursing Research
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    • 제16권3호
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    • pp.195-202
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    • 2010
  • Purpose: The purpose of this study was to examine the influence of parents rearing attitude on family cohesion and adolescents' self-esteem. Methods: The participants were 1,299 high school students from Seoul city and Kyunggi Province in Korea. Data were collected using self-report questionnaire and analyzed using descriptive statistics, Pearson correlation coefficients, stepwise regression with SPSS 14.0 win program. Results: The major results are as follows. First, parents rearing attitude was significantly influence to the family cohesion. Second, parents rearing attitude and family cohesion were significantly affect to the adolescent self- esteem. Third, compare the influence size between the parents rearing attitude and family cohesion to the adolescent self- esteem, the family cohesion was higher than the parents rearing attitude. Conclusion: The finding may provide useful insight to researchers who want to develop social support program for adolescents.

부모의 양육신념 및 역할만족도와 양육스트레스에 대한 연구: 3-7세 자녀를 둔 부모를 중심으로 (A Study on Parenting Beliefs, Parental Satisfaction, and Child Rearing Stress)

  • 송승민;송진숙
    • 한국생활과학회지
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    • 제16권5호
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    • pp.933-944
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    • 2007
  • The relationships of parenting beliefs, parental satisfaction, and child rearing stress were examined in a sample 400 parents who have 3-7 aged children. Parents completed three kinds of questionnaires such as parenting beliefs scale, parental satisfaction scale, and child rearing stress scale. Data analysis was by mean, percentile, t-test, oneway-ANOVA, pearson correlation, and multiple regression. The major findings of this study were as follow; First there was a significant difference between parenting beliefs and child rearing stress. Second, there was a significant difference between parental satisfaction and child rearing stress. Third, conflict of parental role in parental satisfaction and problem solving in parent beliefs was the most predicting variables in child rearing stress.

아버지의 양육 참여행동과 아동의 친사회적 도덕판단능력 (Father's Child-Rearing Behaviors and Children's Prosocial Moral Judgement)

  • 정현희;최경순
    • 아동학회지
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    • 제13권1호
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    • pp.38-51
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    • 1992
  • The purposes of this study are to investigate (1) the father's child-rearing behavior perceived by children in relation to children's sex, family type and mother's job, (2) children's prosocial moral judgement as related to children's sex, family type, and mother's job, and (3) the effect of father's child-rearing behavior on children's prosocial moral judgement. The subjects were 432 5th-6th grade elementary school children in Pusan, For the measurement of father's child-rearing behavior, this researcher developed a father's child-rearing behavior questionnaire based on Choi's (1991) questionnaire, For the children's prosocial moral judgement. the 4 prosocial moral dilemma by Eisenberg-Berg was used, The major findings were as follows, No significant results were found in relation to father's child-rearing behavior and child's sex, family type, and mother's work status, Children's prosocial behavior was not related to any of the above variables, Significant relationships were found between father's child-rearing behavior and children's prosocial moral judgement.

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공동육아시설을 위한 환경디자인의 개념과 기준 (A Concept and Standard of the Environment Design for the Joint Infant-rearing Facilities)

  • 문금희
    • 디자인학연구
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    • 제12권2호
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    • pp.31-40
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    • 1999
  • 급격한 산업화로 인한 핵가족화, 맞벌이 부부의 증가 등으로 우리나라에서는 인간의 성장에 있어 중요한 시기인 유아시기의 부모, 온 집안이나 마을 공동체가 함께 키우던 육아 전통의 바탕이 무너져 버렸다. 일하는 엄마들은 아이를 스스로 양육하지 못하는 것으로 스트레스를 받고 전업 주부들도 육아에 자신감이 없고 아버지들은 육아의 책임을 면제받는 대신 아이들과 가정으로부터 소외된다. 따라서 자녀 양육의 문제를 해결하기 위해 보편적이고 포괄적인 보육 제도를 만들어야 한다. 이러한 문제를 해결하고 바람직한 육아와 교육을 위해서 부모들의 자발적인 참여를 통한 보호와 생활, 교육, 나아가 학교 교육을 보완할 수 있는 공동육아가 대안적으로 마련되어 왔다. 공동육아는 기존 보육 제도와는 달리 조합원들이 출자금을 내어 주민 자치적으로 운영할 뿐 아니라 어린이들이 자연의 생명력을 직접 체험하게 하고자 한다. 따라서 기존의 보육 제도를 위한 환경. 시설의 기준과는 다른 공동 육아에 적합한 환경디자인에 대한 기준 마련이 필요하다. 본 연구에서는 유아 교육의 개념이 시대 변화에 따라 어떻게 변화하고 있는가를 파악하기 위해 이태리와 스웨덴에서 성공적으로 행해지고 있는 유아 교육의 개념 및 공동육아의 개념을 문헌 조사를 통해 정립하였다. 또한 물리적 환경조성을 위한 기본 원칙과 실제적인 환경디자인을 위한 공간 구성과 환경 조건을 문헌조사 하였다. 그리고 공동육아의 개념과 특성 및 물리적 환경 제안을 조사.정리한 후 공동육아 환경디자인의 개념과 기준 및 디자인 요소를 설정하였다. 마지막 결론으로 공동육아를 위한 환경디자인의 디자인지침을 제시하였다.

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