• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.6
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• pp.171-179
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• 2017

The purpose of this study was to examine the effect of the actor and partner effects of the parental sex-role attitude on the parent-child relationship by using the Actor-Partner Interdependence Model (APIM). Specifically, this study focused on the examination of the actor and partner effects of the parental sex-role attitude in married couples with immigrant women who have children under 5 years old. For the analyses, a total of 5,531 couples who participated in the National Survey on Multi-cultural Families were included and the major findings are as follows. First, the couple's sex-role attitude had a statistically significant actor effect on the parent-child relationship. Parents who were more conscious of gender equality displayed a better parent-child relationship and this effect was greater in the case of the father's attitude than the mother's. Second, the father's sex-role attitude had a statistically significant partner effect on the mother-child relationship, whereas the mother's attitude did not. Third, the couple's actor effects were greater than their partner effects and this means that the personal sex-role attitude has a greater impact on the parent-child relationship than the partners' attitude. The implication and limitations derived from these empirical-scientific database results and related studies in educational program of gender equality attitude for multi-cultural families.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.4 no.1
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• pp.31-71
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• 1968

To clarify the breeding behavior of the hybrids between tropical and temperate area rice varieties, investigations were made on heading days and grain sterility. In this study, crosses were made in half way diallel involving 7 varieties: 2 photoperied sensitive Indicas, 2 less sensitive intermediate Indicas, 1 Ponlai Japonica and 2 high temperature sensitive Japonicas. The parents and $F_1$s were grown under 10 hours and 14 hours daylength controlled conditions at both IRRI(International Rice Research Institute, N$14^{\circ}$17') and Suwon(N$37^{\circ}$16'). F2s with their parents were grown at IRRI in the short day season, and at Suwon under natural conditions. Fa lines with their parents were grown at Suwon under natural conditions. Observations were made for heading days and sterility. The results are summarized as follow; 1. Heading days : 1. For the $F_1$s, earliness showed dominance or overdominance to lateness under the 10 hours condition, and dominance or partial dominance under the 14 hours conditions, at both IRRI and Suwon. 2. For the $F_2$s grown at IRRI during the shortday season earliness appeared to be dominant over lateness and segregation was not distinct and continuous. In the early season culture of $F_2$s at Suwon earliness showed partial dominance or was intermediate. In the proper season culture of $F_2$s lateness showed partial dominance or was intermediate. 3. In the combinations between late parental varieties which do not head at Suwon, transgressive segregants bearing effective panicles were obtained. 4. The crosses of parental varieties having long basic vegetative growth duration showed bigger variance in heading days, and significant correlation was found between of parental varieties and the mean coefficient of variance for parental arrays. 5. The means of heading days of F2 populations were significantly correlated with those of $F_1$ or mid-parents. The means of F 8 lines were also highly correlated with the means of $F_2$s, but, the means of $F_3$ lines grown at Suwon and of their parental $F_2$ individual, grown at IRRI were not correlated. 6. A faint heritability was calculated from the regression of $F_3$ lines grown at Suwon on the $F_2$ individuals grown at IRRI for most combinations, especially in the combinations involving shortday sensitive varieties. This implies low efficiency for the selection of heading days of $F_2$ individuals at IRRI to be grown in lines at Suwon. 7. No significant reciprocal effects were measured for $F_1$ and $F_2$ mean heading days. 8. Partitioning the observed photoperiod sensitivity. into two components, parental array mean md the deviation from this array mean, the parental photoperiod sensitivity contributing to the hybrids was measured in terms of general and specific combining ability for photoperiod sensitivity. 9. The photoperiod sensitivity of $F_1$s was higher than that of the parents, and it decreased as the generation progressed in most combinations of tested varieties. 10. The response of heading days to difference of temperature was weaker for $F_1$ hybrids than for the parents. The differences of temperature responses between the longday and shortday treatments were specific for the variety. 2. Sterility : 1. The $F_1$ sterility was specific for the combinations and not correlated to the parental sterility. The sterility of $F_1$s grown under the 10 hours condition was higher than of those grown under 14 hours. These results were the same at both locations, IRRI and Suwon. 2. The high sterile combinations in $F_1$ showed high sterility in $F_2$. The combinations between a high photoperiod sensitive variety and a high temperature sensitive variety showed high sterility and wider variance. 3. The mean sterility of $F_2$s was lower than of $F_1$s and the mean of $F_3$ lines was lower than of $F_2$s. Sterility decreased as the generation progressed, and the differences of $F_3$ sterility of different combinations were not significant. 4. A faint correlation between grain sterility and pollen sterility was observed in $F_2$ populations. 5. No significant reciprocal effects were measured in $F_1$ and $F_2$ sterility. 6. Following Griffing's method, specific combining ability effects were higher than general combining ability effects, especially in the combinations between highly photoperiod sensitive varieties and highly temperature sensitive varieties. 7. No distinct correlations were found between $F_2$ individual sterility grown at IRRI and $F_3$ line sterility grown at Suwon. 8. No distinct correlations were observed between heading days and sterility of $F_2$ individuals.

• Korean Journal of Childcare and Education
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• v.13 no.6
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• pp.21-41
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• 2017

Objective: The purpose of this study was to examine the direct and indirect effects of mothers' and children's emotional instability and maternal affectionate-rational parenting on children's attributional style. Methods: The participants of this study were 253 4th, 5th and 6th grade elementary school students and their mothers in Seoul and Incheon. Data were analyzed by path analysis using AMOS 21.0. Results: The results were as follows: First, children's attributional style for negative and positive events was significantly related to children's emotional instability and maternal affectionate-rational parenting. Also, mothers' and children's emotional instability was significantly associated with affectionate-rational parenting. Second, mothers' emotional instability had indirect effects on children's attributional style for negative and positive events through maternal affectionate-rational parenting. Finally, children's emotional instability had not only significant effects on children's attributional style for positive achievement events, but also indirect effects on children's attributional style for negative and positive events through maternal affectionate-rational parenting. Conclusion/Implications: The results of this study suggest that both environmental and individual factors, including mothers'and children's emotional instability and maternal affectionate-rational parenting, need to be considered to explain children's attributional style. Also, these findings have implications for developing intervention programs for children's attributional style and parental education.

• Asian Pacific Journal of Cancer Prevention
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• v.14 no.7
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• pp.4319-4323
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• 2013

Background: Hookah smoking has been referred to as a global tobacco epidemic by public health officials. This study aimed to investigate the characteristics, behaviour and perceptions related to hookah smoking among the youth smokers in Pune. Methods: Two hundred and eighty established hookah smokers participated in this study. Data was collected using a 29-item questionnaire, constructed using three main domains: Characteristics (socio-demographic and personal), behaviour and perceptions (about harmful effects in comparison to cigarette smoking). Results: The results indicated that the mean age of starting hookah smoking was 17.3 years; 75% of participants did not have parental acceptance; light-headedness, dizziness and headache were most common reported nicotine effects, post hookah smoking. Hookah smoking on a daily basis was reported by 24.6% participants. The mean time of hookah session was 1 hour and 19 minutes. 68.2% participants were reported to smoke hookah in hookah-cafes and 35.7% participants were found to share the hookah. Some 66.7% participants had no intention to quit. Most of them (71-80%) had misperception about the safety of hookah smoking over cigarette smoking and 54-82% participants were unaware of health effects. Conclusions: Educational intervention is urgently needed to create awareness among the youth about the harmful effects of hookah smoking.

• Journal of the Korean Society of Clothing and Textiles
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• v.38 no.6
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• pp.810-822
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• 2014

This study investigated the effects of sociocultural influence and body image on appearance enhancement behavior (facial management, clothing selection, and weight/figure management). For data collection, a questionnaire was administrated to 378 female college students in Seoul and Gyeonggi-do from May $23^{rd}$ to June $10^{th}$ 2013. A SPSS 18.0 statistics package was used to analyze data along with descriptive statistical analysis, frequency analysis, factor analysis, reliability analysis, and regression analysis and frequency analysis. The results were as follows. First, sociocultural influences were divided into three factors: media influence, peer influence, and parental influence. Overall sociocultural influences had positive effects on appearance enhancement behavior. Second, body image was divided into: appearances-management, body-satisfaction and body confidence. Sociocultural influences had a significant effect on overall body image. Third, body image positively affected overall appearance enhancement behavior.

• International Journal of Industrial Entomology and Biomaterials
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• v.10 no.2
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• pp.153-157
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• 2005

Recently two breeding programs were carried out for isolation of new parental inbred lines in Iran. This study was undertaken in order to estimate the combining ability effects and heterosis of these lines. For this purpose an $8\times8$ diallel cross analysis including eight inbred lines of silkworm with four lines from each program were studied for their five quantitative traits. The results indicated that reciprocal effects appeared insignificant for most of traits. Japanese lines of 111 and 113 were best combiners for shell weight, cocoon weight and shell percentage traits. With respect to pupation rate, Chinese line 110 was the best and according to general combining ability (GCA) and specific combining ability (SCA) variances, it is superior in specific combinations. Hybrid $109\times110$ showed better characters for both productive and viability traits. Hybrids with high heterosis had high SCA too.

• Child Health Nursing Research
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• v.17 no.4
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• pp.230-237
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• 2011

Purpose: To identify the perception and practices of kangaroo care in nurses and doctors working in neonatal intensive care units (NICU) in Korea. Methods: One hundred forty-nine nurses and nineteen doctors working in the NICU from six university hospitals completed a survey questionnaire. Results: Most agreed that Kangaroo care promoted attachment and parental confidence as well as physical health of the infant. However, nurses and doctors showed a negative perception in providing kangaroo care for premature infants under 1,000 grams or within several hours after birth. Major barriers for kangaroo care were worrying about extubation and safety problems of premature infants. Married or senior nurses showed a more positive perception than others. Also nurses who worked in hospitals where kangaroo care was provided had a lower barrier perception than other nurses. Conclusion: Nurses and doctors working in NICU worried about adverse effects of kangaroo care even though they perceived positive effects. Standard education programs and manuals should be developed before dissemination of kangaroo care in Korea.

• Korean Journal of Childcare and Education
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• v.14 no.5
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• pp.101-115
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• 2018

Objective: The goals of this research were (1)to examine the relationship among parental conflict, mothers' depression and preschoolers' sleep problems, and (2) to examine the mediating effects of mothers' depression between marital conflict and preschoolers' sleep problems. Methods: The participants were 1,639 mothers with preschoolers taken from the 5th year Korean Children Panel. Date were analyzed using descriptive statistics, partial correlation analysis, and multiple regression analysis. Results: The results were as follows: First, preschoolers' sleep problems were positively related to marital conflicts. Second, preschoolers' sleep problems were positively related to mothers' depression. Third, marital conflict was positively related to mothers' depression. Lastly, mothers' depression fully mediated the relationship between marital conflict and preschoolers' sleep problems. That is, marital conflict had an effect on preschoolers' sleep problem, only through mothers' depression. Conclusion/Implications: Based on the results, intervention programs should be developed to prevent preschoolers' sleep problems such as marital relationship improvement programs and mothers' depression improvement programs.

• International Journal of Human Ecology
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• v.11 no.2
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• pp.25-37
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• 2010

This study examined the relationships between parenting styles, academic achievement, and behavioral adjustment of adolescents in Korea. Using a sample of 181 parents and their children (13-15 years old), parents completed the Parental Authority Questionnaire and adolescents filled out the Youth Behavior Checklist (CBCL) and provided their school grades. Factor analysis was conducted on the PAQ to confirm the psychometric properties. Hierarchical regression analysis was computed to determine the relationship between maternal and paternal parenting styles, academic performance, and children's internalizing and externalizing behaviors. Regression analysis revealed that mother's authoritative parenting style was positively related with adolescents' grades in English. However, father's permissive was negatively related with adolescents' grades in English, Mathematics, and Science. Mother's permissive parenting styles showed negative effects of internalizing and externalizing behavior problems whereas father's permissive parenting styles showed positive effects of internalizing and externalizing behavior problems.

• Journal of agricultural medicine and community health
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• v.34 no.2
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• pp.175-187
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• 2009

Objectives: This study was conducted to investigate whether joint effects between family allergy history and environmental tobacco smoke(ETS) by parents were associated with pediatric asthma and wheezing. Methods: The study objects of this study were 2301 element school students and their parents in an urban-rural areas of Gyeonggi-do. Pediatric asthma and wheezing were identified by measures of International Study of Asthma and Allergies in Childhood (ISAAC) questionnaires. We investigated history of parental allergy, ETS, and other socioeconomic status of both parent. Data were analyzed using logistic regression methods. Results: After adjusting other variables, children with maternal asthma history were more likely to be reported life time wheezing (OR: 3.79 95%CI:2.43-5.90), recent wheezing (OR:4.09 95%CI:2.28-7.38), and diagnostic asthma (OR:2.61 95%CI: 1.44-4.75). Paternal asthma history increasing risk of life time wheezing (OR 2.01 95%CI:1.19-3.38) and recent wheezing (OR:2.38 95%CI:1.24-4.56). Joint effect between parental allergy history and ETS significantly effected on child's life time wheezing and recent wheezing. The risks of life time wheezing (OR:2.47 95%CI:1.64-3.717) and recent wheezing (OR: 2.51 95%CI:1.34-4.69) were significantly higher than others without both factors. The risk of recent wheezing of children with maternal recent smoking and parental allergy history (OR:4.83 95%CI:1.89-12.33) was higher than their counterpart. Conclusions: The result of this study implies that children with family allergy history and passive smoking are more likely to be get asthma and wheezing than children with family allergy history and non-passive smoking. This study provide the object information to increase the efficiency of non-smoking campaign and education for decreasing pediatric asthma risk.