• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.11 no.1
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• pp.27-41
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• 2000

Objects：This study was designed for studying of current Korean adolescents computer game playing habits and exploring associations with parental rearing patterns and individual psychopathology. Methods：One hundred twenty four adolescents(age 13-15) who reside in urban area completed self-report questionnaires containing Questionnaires designed by authors, Symptom Checklist-90-Revision of Korean Version(SCL-90-R) and Parental Bonding Instrument(PBI). Results：1) Computer game playing appears to be one of the social and leisure phenomena in these days. Although Adolescents spend a lot of times on computer game, Many of them perceive not problematic. 2) Compared with females, Male play computer games more regularly, more longer, spent more times in gamebang. 3) There was positive relationship between anxiety subscale in SCL-90-R and detrimental effects of computer game. 4) There was positive relationship between game frequency and maternal overprotection. 5) The main reasons for playing are 'for an avoidance of stressful life events', academic burden was the most troublesome issues in korean adolescents. 6) Many adolescents use gamebang as a social place, but they thought that gamebang is not good places to have a good time. Conclusion：This papers shows that computer game playing is a popular social leisure activity in Korean adolescents. And, Most of korean adolescents reported that they are suffered from pressure of academic achievements. They use computer game mainly by means of relieving academic pressures. In a heavy game users who have many conflicts with parents, teacher and who has frequent truancy and social withdrawal show significant anxiety. Maternal overprotection was observed in heavy game users. Authors recommended that clinicians should be careful in examining heavy computer game behaviors. Both underlying affective states and environmental influences, including family situations should be vicariously examined.

• Journal of Sericultural and Entomological Science
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• v.51 no.1
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• pp.1-8
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• 2013

This study was conducted for investigation of habitat and development of indoor-rearing conditions of peacock butterfly, Inachis io (Linnaeus). Three different region, Mt. Kwangduk-san, Mt. Hae-san and Mt. Taebaek-san in Kangwon-do, was selected for investigation of domestic distribution and ecological environment of peacock butterfly. In result, there are many butterflies in the only two region, Mt. Kwangduk-san and Mt. Hae-san. On 16th April, 4 overwintered butterflies were observed in Mt. Hae-san. At the end of June and early in July, 51 individual next generation's butterflies were observed in Mt. Kwangduk-san and Mt. Hae-san. For development of indoor-rearing conditions, collected each 15 male and female peacock butterflies was reared in a room condition. Female butterflies laid eggs in the egg cluster on the underside of host-plant's leaves, Urtica angustifolia Fisch., in the ovipositioning room. We took 11 egg cluster with average $404.6{\pm}23.6$ eggs. Hatchablity of eggs was 92.3%, and the eggs hatched within $5.1{\pm}0.9$ days from the day of oviposition under high temperature, long day condition($25^{\circ}C$, 14L:10D). The larval period was $18.3{\pm}1.0$ days under high temperature, long day condition($25^{\circ}C$, 14L:10D), showing 81.0% pupal ratio. The head width of each developmental larval stage were $0.37{\pm}0.01mm$(1st instar), $0.66{\pm}0.02mm$(2nd instar), $1.07{\pm}0.05mm$(3rd instar), $1.81{\pm}0.07$(4th instar), $2.76{\pm}0.08$(5th instar). The pupal period was $8.4{\pm}0.6$ days, and the emergence rate was 87.5%.

• Journal of Aquaculture
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• v.9 no.3
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• pp.223-232
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• 1996

Growth and survival rate in shortnecked clam, Ruditapes philippinarum were studied from different seedling production areas, Hadong, Ulsan and Kochang to Kwangyang Bay, Korea, and three stocking densities (1,000, 1,500 and 3,000 individuals/$m^2$) of clam from Ulsan seedling production area were examined. During the experimental period, water temperature and specific gravity were ranged from 4.5 to $26.0^{\circ}C$ and from 1.0216 to 1.0248, respectively. Shell length was grown from $2.30{\pm}0.05\;to\;3,29{\pm}0.02$ cm in Hadong, $1.32{\pm}0.02\;to\;3.15{\pm}2.02$ cm in Ulsan, $1.24{\pm}0.03\;to\;3.18{\pm}0.02$ cm in Kochang. Kochang's seed was displayed fast growth rate than others. In different rearing densities, the lower density group was showed a rapid growth rate. Shell length from the 1,000 individuals per $m^2$ group grew longer than that from the 2,000 individuals group. Total weight from the 1,000 individuals group was higher than that from the 1,5()0 individual and the 2,000 individual groups. Survival rate by seedling production areas, Hadong, Ulsan and Kochang showed $69.4\%,\;63.8\%\;and\;41.7\%$, respectively. Survival rate by rearing density, 1,000, 1,500 and 2,000 individual groups showed $70.8\%,\;67.8\%\;and\;59.0\%$, respectively.

• Asian-Australasian Journal of Animal Sciences
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• v.26 no.1
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• pp.43-49
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• 2013

The aim of this study was to compare both the performance of litters derived from two sire genetic origins (SGO), Vienna Blue (VB) and Burgundy Fawn (BF), along successive seasons of birth (SB; winter, spring, summer and autumn), and doe reproductive performance in an organic production system. A total of fifty-eight does consisting of a mixture of crosses of several medium-large size breeds at different parity order (P, 1 = nulliparous; 2 = primiparous; ${\geq}3$ = multiparous) and twelve males (6 VB and 6 BF) were housed indoors at environmental conditions that followed seasonality. An extensive reproductive rhythm was used and kits were weaned at $46{\pm}6$ d of age. Doe reproductive performance and the data of 105 litters (55 from VB and 50 from BF SGO) were recorded throughout the SB. No statistically significant differences related to SGO effect were observed. As regards parity order, multiparous does showed higher live weights (LW) (p<0.05), total born (p<0.01), total born alive (p<0.05) per delivery, and litter weight of born alive (p<0.05), but lower milk output at 21st d than primiparous does (p<0.05). The extensive reproductive rhythm mainly increased litter performance at birth in multiparous does but was not sufficient to permit a complete recovery of body reserves lost during lactation. Autumn SB negatively affected doe LW variation between deliveries. The number of pups born and born alive per delivery (p<0.05) and litter size at 21 d of age and at weaning (p<0.01) were lower during hot SB. Due to the lower litter size of pups born in summer and autumn, their individual weight at 21st d of age and daily individual growth rate 0 to 21 d were higher than those of pups born in winter (p<0.001). Litter performance at 21st d of age and individual pup pre-weaning growth rate were poorer for those born in spring than in other seasons due to the harmful effects of increased environmental temperatures. SB affected most of the performance traits of does and young rabbits reared under the organic farming system. The rabbits seemed better suited to organic rearing conditions during winter than in other seasons. The worst results overall were obtained in the spring SB, whereas the hot SB negatively affected both doe energy balance and prolificacy. In conclusion, the pups of the 2 SGO showed good pre-weaning performance and seemed suited to the organic rabbit production system.

• Journal of Labour Economics
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• v.24 no.2
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• pp.63-94
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• 2001

Based on the human capital theory, the wage differentials among laborers are generated from the discrepancy of human capital stock which depends on individual laborer's decision. Hence, the wage differentials among laborers or between male and female are not the results of discrimination, but the results of individual choice. But, if the individual choice for human capital stock would be affected by the male-female discrimination, the explanation for male-female wage differentials base on the human capital stock has a bias. Actually, women have experienced in the discrimination on labor market participation due to gravity, parturition, infant rearing. Also, it is a fact that women have been discriminated against men in labor market owing to social, traditional, and cultural discriminations. If woman or her parent will less invest on human capital than man owing to the existence of discrimination in labor market, the 'expected human capital stock' instead of human capital stock will explain male-female wage differentials better. Therefore, in this study, we set up three models; first model includes working hours, industry, occupation, etc which are in general used as explanatory variables for wage decision, second model includes the variables which reflect the traditional human capital stock together with the first model's explanatory variables, third model employes the 'expected human capital stock' instead of traditional human capital stock. From the empirical test, the estimates of discrimination in three models are .93, .60, and, .48 respectively. This result implies that the male-female wage differentials in Korea can be explained by the discrepancy of 'expected human capital stock'. Since the discrepancy in expected human capital stock depend on the disparity in life-cycle labor force participation, male-female wage differentials can largely be attributed to male-female disparity in expected lifetime labor force participation.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.32 no.4
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• pp.466-469
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• 1999

Cladocera are important food organism for seed production of finfishes. freshwater cladocera such as Daphnia and Moina are well known food organisms for the larval rearing of freshwater fishes and are easy for mass culture. However, mass culture technique for marine cladocera are not yet developed, The only mass produced food organisms available these days for the larval production of marine finfishes are rotifer and Artemia. An estuarine cladoceran, Diaphanosoma celebensis, has a high possibility of being used as a food organism for the larval rearing of marine finfishes because this species is much easier to mass culture than marine ones. Therefore many studies are needed for this species. In this study, the effects of the volumes of culture container, 40, 1,500 and 15,000 ml, on the stable production of this species were tested and results are as follow: The maximum densities of this species in each of the culture volumes were reached after 14 days in 40 ml, 12 days in 1,500 ml, and 21 days in 15,000 ml with values of 3.4 $\pm$ 0.4, 14.2 $\pm$ 2.1 and 2.5 $\pm$ 1.6 per ml, respectively. The relative population growth index (RPGI) was stable in the culture volume of 1,500 ml. Moreover, possible harvesting number(individual/ml/day) was much higher in the 1,500 ml container than the other culture volumes. Therefore, optimum culture volume among the tested volumes for mass production of this species was 1,500 ml.

• Korean Journal of Human Ecology
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• v.7 no.1
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• pp.39-51
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• 1998

This study was carried out with the purpose of capturing current state of Korean family life culture related to childrearing. The Questionnaire developed for this study in order to delineate the values and perceptions related to general childrearing practices in present Korean families consisted of 73 items concerning prenatal care and child birth, child caring and rearing, and role division and value education. Subjects were mothers of young and primary school children currenly residing in Seoul area and Choongchung province of South Korea. Four hundred and four questionnaires were analyzed, and the summary of results were as follows. First, both the respect for children's individual needs concerning food, clothing, and health-related behaviors and the pursuit of convenience in everyday life on the part of mothers appeared to be important and valued by Korean mothers. Second, the basic values and traditional meanings of family events such as prenatal care, children's birthday, especiall the first one, and family rituals and gatherings still appeared to be exsiting and influential, but there seemed to have been some changes both in their formal aspects and detail contents. Third, meaningful differences in childrearing attitudes were found according to mother's place of growth, educational level, and her employment status. Finally, traditional distinction between sexes and sex-role division in childrearing seemed to have weakened to some extent, which was particularly among mothers with higher educational level or residing in big cities.

• Journal of Korean Academy of Nursing
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• v.42 no.1
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• pp.36-47
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• 2012

Purpose: This study was to explore adaptation experience to family among women who immigrated for marriage. Specific aims were to identify problems immigrant women face as family members and how they interact with other family members. Methods: Grounded theory methodology was utilized. Data were collected from iterative fieldwork with individual in-depth interviews from 6 immigrant women as key informants, and 2 of their husbands and 2 of their mothers-in-law as general informants. Results: Through constant comparative analysis, a core category emerged as "tearing down the wall in communicating". Causal conditions were feeling frustrated in one's expectations, differences in language and life style, differences in recognition, and perceptions of discrimination and prejudice. Strategies were learning the Korean language, learning Korean culture, managing stress, mediating differences between family members, and introspecting. Intervening factors were support systems, burdens of child-rearing, and the condition of one's health. Consequences were rooting oneself in one's family and accepting one's life as it is. Conclusion: Results of the study indicate that there is a need for nurses to understand differences in communication with family members among immigrant women and to provide information and emotional support to improve the adaptation of these women to their Korean families.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.11
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• pp.5066-5075
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• 2012

The purpose of this study was to offer a foundation of developing the more qualitative and individual nursing-intervention strategy for allowing married female immigrants and their children of multi-cultural families to possibly grow and develop as a Korean without discrimination and prejudice in Korean society. Period of data collection in this study was from April 2010 to May 2011. Subjects of this study are totally 13 married female immigrants of multi-cultural families who have preschool children of dwelling in T city. Data analysis is qualitative research that applied Spradley(1990)'s culture-descriptive method. The results were as follows : The common elements, which are shown in married female immigrants, children, and family members of multi-cultural families, were indicated to "social prejudice", "exclusive family atmosphere", "economic difficulty", "coexistent different culture".

• Human Ecology Research
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• v.54 no.1
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• pp.57-67
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• 2016

This study analyzes child and family department curricula at domestic universities and research topics in articles found in related representative domestic journals. Curricula were collected from the web pages of 26 out of 90 departments of 77 universities. Research topics were collected from the Family Environment Research, Journal of Child Studies, and Journal of Korean Association of Family Relations published from 2000 to February 2015. From those journals, the number of articles related to child studies were 1,843 and family studies 1,239. Among those articles, 6,593 keywords related to child studies and 4,748 keywords related with family studies were collected and analyzed. The results of this study were: first, we found four types of curricula provided by Child and Family Departments such as Child Studies, Child and Family Studies, Home Economics Education, and Family Welfare. Second, the identified research topics in child studies were child development, education & childcare, parent education, counseling & therapy, cross cultural study, instrument development, and policy. Family research topics were also categorized by individual family members, child rearing & education, family dynamics & problems, families & culture, work & family, family formation, dissolution & diversity, family practice, family theories & methods, and midlife & later years. We suggest several future careers in child and family studies based on these findings.