• Korean Journal of Ecology and Environment
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• v.34 no.4 s.96
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• pp.310-318
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• 2001

In the large regulated Nakdong River, the Predation effect of juvenile fish on the zooplankton community was evaluated by gut and stomach analyses of fish in 1999. Juvenile fish of five species showed high density from May to early June when river discharge was low and water body became stagnant. During this period, large rotifers, Asplanchna spp. and Brachionus spp. declined and the decrease of cladoceran (Moina micrura and Bosminopsis deitersi) density was also obeserved. At this time, small rotifers including Polyarthra spp. reached maximum density. Gut analysis of fish demonstrated that small-sized juvenile fish (< 15 mm in total length)preferred large rotifers as well as cladocerans, while large sized fish (> 15 mm)selected only cladocerans. On the other hand, juvenile Micropterus salmoides of which size was larger than other juvenile fish consumed not only zooplankton but also other small juvenile fish. Based on these results, the decline of large rotifers and cladocerans during early summer in the river seems to be result of predation by juvenile fish. However, the period when juvenile fish maintained their high density was as short as one month and the decreased density of cladocera rapidly recovered as soon as juvenile fish became scarce. Such a short period of juvenile fish devel-opment in the river can be attributed to the consumption of juvenile fish by the young-of-the-year cohorts as well as adults of M. salmoides. The high trophic state of the river might permit the rapid recovery of the cladoceran community. The predation impact of juvenile fish in the Nakdong River seems to be affected by the existence of piscivore as well as high trophic status.

• Clinical and Experimental Pediatrics
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• v.48 no.4
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• pp.453-456
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• 2005

Single or scattered sequential hamartomatous juvenile polyps are common in the large intestine, especially the rectosigmoid area, where they are usually nonfamilial. Juvenile polyps arising in the small inestine are very rare. Juvenile polyps are usually found in children aged between 1 and 10 years, the majority of cases are between 2 and 4 years of age. Bleeding is the most common symptom, but some children may suffer from autoamputation or prolapse through the anus, and rare cases are presented as intussusception. Approximately six cases of juvenile polyps in the small bowel have been reported. Jejunal intussusception arising from juvenile polyp is uncommon in comparison with the ileocolic form. It has an atypical subacute presentation. It must be better understood for its diagnosis can be made too late. Surgical exploration is the treatment of choice because of the recurrence of various clinical symptoms. We report a case of single juvenile polyp of jejunum found in a 10-year-old girl who presented with signs of intussusception.

• The Journal of Pediatrics of Korean Medicine
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• v.23 no.1
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• pp.73-83
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• 2009

Objectives This study is to report a case that has an important meaning as a result of treating Juvenile Rheumatoid Arthritis. We investigated a patient who had to maintain his life with western medicines such as DMARDs, NSAIDs and steroids for a long time. The patient has recovered from all symptoms and his ESR, CRP has been back to normal range with oriental medicine treatment. Methods The patient had fever, especially repeated fever during the afternoon, pain and swelling of joints, generalized skin eruption, anorexia, delayed growth, weight loss, fatigue. So we treated him with herbal medicine and reduced his western medicine. The aim of treatment was recovery from Juvenile Rheumatoid Arthritis after discontinuance of all western medicine. Results The symptoms of systemic type Juvenile Rheumatoid Arthritis was vanished and the patient maintains his condition with oriental medicine treatment after stopped all DMARDs such as MTX(methotrexate) and NSAIDs. His ESR and CRP levels were back to the normal range. After this treatment the patient's height and weight has been increased which showed a significant meaning in growth to the child. Conclusions This study showed that oriental medicine can elevate the Juvenile Rheumatoid Arthritis patient's quality of life with continuous health care and treatment for major problem. For more accurate studies, further studies would be needed with more cases.

• Journal of the Korean Home Economics Association
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• v.48 no.7
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• pp.33-48
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• 2010

The purpose of this study was to explore the effects of family structure(parentral marital status and socioeconomic status), parental communication, academic problems, and peer relationship on juvenile delinquency. The participants were 1009 middle school and high school students in Seoul city and Gyeonggi Province. The major results were as follows: 1) Parental marital status(divorced/seperated) had both direct and indirect positive effects and lower class in socioeconomic status had an indirect positive effect on academic problems and peer relationship on juvenile delinquency rates. 2) Open maternal communication had a direct negative effect on juvenile delinquency rates. However, open paternal communication had both direct and indirect negative effects. 3) Academic problems had both direct and indirect positive effects on juvenile delinquency rates. 4) Peer relationship had a direct positive effect on juvenile delinquency rates. 5) The level of effects that each variable had differed by delinquency types. Based on these results, implications for preventing juvenile delinquency were discussed.

• Journal of the Korean Society of Clothing and Textiles
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• v.16 no.1 s.41
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• pp.85-96
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• 1992

The puropse of this study is to find out that whether the juvenile delinquency could be decreased by the revival of school uniform for the high school students. For this purpose, the difference and frequency of juvenile delinquency between uniformed students and none·uniformed students were surveyed. In addition, the relation among the students, social classes, receiving attitude for the sub-culture, with juvenile delinquency were also surveyed. For this study, 728 high school students were' studied with a questionaire. They were 328 ' uniformed students from 6 schools and 400 none-uniformed students from other 6 schools. The conclusions of this study are as follow: 1. The order of juvenile delinquency is resistance to their parents and teachers, cunning in examination, drinking, watching shameful video tapes, possession of dirty books and pictures, gambling, entering to thea rooms, billiard rooms, the prohibited cinema houses aild drinking houses, and smoking. The students' delinquency was chiefly misdeed against the public order and social position and most of them were without any victims. And there were no misdeed such as drug addiction, robbrry and bodily harm. 2. The difference of juvenile delinquency between uniformed and non·uniformed schools was not found. 3. More nisdeed were occurred when they were without uniform; especially in cases of entering to shameful video shops, drinking houses, tea rooms and billiard rooms. 4.The logical propriety that the juvenile delinquency would be decreased by putting on uniform to all students is scarce, because Ell misdeed were occurred when they were without uniform after school. Uniform were worn only when they go to school. 5. A negative effect between student's affection toward their parents and schools, and juvenile deliquency was found. Much they love their parents and schools, less misdeed occurred. 6. Positive effect between sub·culture and juvenile delinquency was found. The friendship with delinquent students gives a great influence to juvenile delinquency.

• Korean Journal of Child Studies
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• v.26 no.2
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• pp.107-120
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• 2005

Three types of socio-moral transgression events were used to test the moral emotions and attributions of 30 juvenile offenders on probation with a comparison group of 30 non-offenders. Data were analyzed by chi-square. Differences between juvenile offenders on probation and non-offenders were that juvenile offenders expected victimizers would feel happier and less guilty following such acts of victimization as physical harm, theft, and lying than the comparison group. Non-offenders were more likely than offenders to feel that victims would feel angry and upset. Juvenile offenders gave more variable and less adaptive emotional responses. Offenders provided victimization and emotional distance attributions, but the comparison group provided moral attributions or causal-dependent attributions such as fairness and justice.

• Journal of the Korean Home Economics Association
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• v.31 no.3
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• pp.143-155
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• 1993

In recent years, behavioral disorders of young people and juvenile delinquency tend to increase remarkably in number, and closed up highly as a social and educational problems in Korea. It goes without saying that parents generally play important roles in children's development of personality, and the home is mostly responsible for juvenile delinquency. Therefore, first this paper describes a relation between broken family and juvenile delinquents. Burt, Shideler, Neumayer, and Glueck maintain that broken family is a cause of delinquency, on the other hand, Healy and Sutherland assume a critical attitude toward their contentions. Second, Breckinridge, Merril, and Glueck maintain that poor family is as cause of delinquency, while Sullenger, Neumayer, and Dirksen make a considerable point which poverty has no direct connection with delinquency. Third, abnormal family relationships namely, discord family, abnormal parent-child relationship, and immoral family exert a bad influence upon formation of personality, esepecialy during the period of preschool childhood. These results give some empirical support to the theory that children's conduct disorders and juvenile delinquency are caused by defective family relationships. It is necessary that a community has a supporting structure of children's wholesome development and the prevention of juvenile delinquency.

• Journal of the Korean Wood Science and Technology
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• v.33 no.2 s.130
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• pp.17-23
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• 2005

Juvenile and transitional-juvenile wood samples from loblolly pine (Pinus taeda) were immersed in water to investigate longitudinal and tangential swelling properties. Increment cores from twenty-six loblolly pine trees were sampled at breast height (1.37 m). Earlywood rings 5 and 9 were separated from the core, extracted, oven-dried and immersed in water at room temperature. The variance in longitudinal swell was significant for ring 5 compared to ring 9 (p = 0.001). It was found that tangential swell might predict longitudinal swelling of juvenile wood at ring 9 but not at ring 5. Poor correlation in ring 5 suggests that swelling response in younger juvenile wood may differ. The swell response at ring 5 did not follow the shrinkage models discussed in the literature while ring 9 adhered to the expected curve.

• Journal of the Korean Home Economics Association
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• v.43 no.3 s.205
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• pp.45-57
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• 2005

The purposes of this phenomenological study were to investigate the sexual experiences of juvenile delinquents, and to understand how ecological systems affected their sexual activities. The participants were 13 adolescents on probation and 12 adolescents from juvenile correctional facilities or prisons. They explained their meanings of sex, their sexual behaviors, and their coping strategies for sexual problems. Participants conceptualized sex as physical intercourse, while excluding the emotional aspects of sex. They accepted adults' sexist attitudes toward male and female sexual behaviors, and followed adults' commercialization of sex. In contrast to their routinizing sexual behaviors, they had neither enough knowledge of sex nor effective strategies to solve sexual problems. The sexual activities of juvenile delinquents were influenced by their peer groups and sexual messages from media and internet, rather than by their tamely and school. The holistic view of the study highlights the importance of interactions between individuals and the ecological systems when interpreting the sexual experiences of juvenile delinquents.

• Korean Journal of Child Studies
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• v.13 no.1
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• pp.112-124
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• 1992

The purpose of this study was to identify the relation between juvenile deliquency and parent-adolescent communication, the family cohesion and adaptability as variables of psychological environment of the family. The subjects were 143 juvenile deliquents in jail, aged 16 to 19, and 347 9th, 10th, 11th, 12th grade students who resided in low income areas in Seoul and Taegu. The research data were collected by structured questionnaire. 143 juvenile delinquents and 87 students whose degree of deliquency was more than M+(0.5*S.D) were selected as the final data source. The statistical methods were frequency percentile, pearson's correlation, one-way ANOVA. Scheffe'test and multiple regression analysis. The major findings showed that (1) juvenile deliquency was significantly related to father-closed communication type. (2) juvenile deliquency was significantly related to low family cohesion and adaptability, (3) the family cohesion and adaptability was positively correlated with parent-adolescent communication. Father-adolescent communication had more important effect upon the family cohesion and adaptability than mother-adolescent communication.