• The Bulletin of The Korean Astronomical Society
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• v.37 no.2
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• pp.220.2-220.2
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• 2012

대기 중 수증기의 불규칙한 분포와 운동은 대기의 굴절율을 시간에 따라 불규칙하게 변화시킨다. 전파 관측 중 대기의 굴절율이 짧은 시간 동안에 크게 변하면 천체가 안테나 주빔의 중앙에서 벗어나는 것처럼 관측되고, 이는 마치 안테나 지향 오차가 커지는 것과 같은 효과를 준다. 이러한 현상을 대기 난굴절(Anomalous Refraction)이라고 한다. KVN 안테나 성능 시험 관측 중 심할 경우 수십초의 시간 규모에서 수십 각초 이상 안테나 지향 오차가 커지는 현상이 관측되어 각 사이트의 대기 난굴절 특성에 대하여 모니터링을 시행하였다. 22GHz와 43GHz에서 KVN 사이트의 대기 난굴절 특성을 파악하기 위하여 2010년 4월부터 2011년 4월까지 각 계절마다 세 사이트에서 시험 관측을 진행하였다. 관측 결과로부터 계절별, 낮과 밤등을 기준삼아 KVN 사이트의 대기 난굴절의 특성을 소개한다.

• 대한예방의학회:학술대회논문집
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• 2000.10a
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• pp.92-92
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• 2000

• 대한예방의학회:학술대회논문집
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• 2000.10a
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• pp.11-11
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• 2000

• 대한예방의학회:학술대회논문집
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• 1997.10b
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• pp.202-204
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• 1997

• Journal of Korean Academy of Nursing Administration
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• v.6 no.2
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• pp.245-257
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• 2000

The purpose of this study was to validate caregiver outcomes included Nursing Outcomes Classification(NOC) developed by Johnson and Maas at the University of Iowa. A sample of 73 nurse experts working in university affiliated hospitals participated in this study. They were asked to rate indicators that examplified the outcomes on a scale of 1(indicator is not at all characteristic) to 5(indicator is very characteristic). A questionnaire with an adaptation of Fehring's methodology was used to establish the content validity of outcomes. The results were as follow: 1. Eight outcome label were considered to be 'supporting' and three outcome label were considered to be 'nonsupporting'. 2. 'Caregiver-Patient Relationship' attained an OCV score of 0.64 and the highest OCV score among caregiver outcomes.. 3. 'Caregiver Emotional Health' attained an OCV score of 0.54 and the lowest OCV score among caregiver outcomes. Replication study will be needed and outcomes sensitive to Korean culture need to be developed.

• Journal of Korean society of Dental Hygiene
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• v.10 no.4
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• pp.757-764
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• 2010

Objectives : The fluoride coating for caries prevention and strengthen enamel use NaF(sodium fluoride, Junsei Chemical Co., Ltd, Japan) 2% gel, SnF2(stannous fluoride, SIGMA-ALDRICH Gmbh, USA)8% gel and APF(acidulated phosphate fluoride, Sultan health care, USA) 1.23% gel. Methods : After put the enamel piece in these fluoride compound gel, we observed density level. And after measuring the vickers hardness, Got the following conclusions. Results : 1. After settling in the APF 1.23% during 6 days, we observed high density level of enamel surface using 250 magnification scanning microscope. The vacuum of surface packed (in) like sardines. 2. After settling in the APF 1.23% during 6 days, we observed reducing the space between the cluster of enamel surface using 50,000 magnification scanning microscope. 3. The vickers hardness change was very much on the all kinds of fluoride compound gel[2% NaF(sodium fluoride)gel, 8% SnF2(stannous fluoride) gel, 1.23% APF(acidulated phosphate fluoride)gel]. It's all because of reducing the space between the cluster of enamel surface(p<0.001). Conclusions : The vickers hardness change was very much on the all kinds of fluoride compound. It's all because of reducing the space between the cluster of enamel surface.

• Journal of Korean Academy of Nursing Administration
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• v.8 no.4
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• pp.605-614
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• 2002

Purpose : The purposes of this study is twofold: (a) to investigate the effect of job stress and organizational climate on the organizational effectiveness of hospital nurses, and (2) to examine the moderating effect of organizational climate on job stress. Method : Three organizational effectiveness variables(e .g., job satisfaction, organizational committment and group productivity) as outcomes variables were examined. The sample consisted of 602 nurses from 5 general hospitals affiliated university. Data were collected with self-administrated questionnaires and analyzed using hierarchical regression. Results : It was found that: (a) seven job stress variables(e. g., workload, role conflict, schedule, lack of knowledge, conflict with superior, conflict with other personnel and conflict with patients) have negative effect on job satisfaction and organizational committment; (b) organizational climate have positive main effects on job satisfaction and organizational committment; (c) the negative effects of job stress variables on job satisfaction and organizational committment are not moderated by organizational climate. Conclusion : Organizational climate mediates the effects of job stress on group productivity, but the size of the mediating effects was small. Various outcome variables need to be discussed further research.

• Korean Journal of Community Nutrition
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• v.6 no.3
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• pp.340-353
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• 2001

The aim of this study was to investigate health-related and eating-related behaviors as part of self-recognized health status. The survey was conducted among 304 elderly people in Chunchon city in 1999. Fifty two percent(52%) of the respondents recognized they were healthy, 32% felt so-so and 16% thought themselves unhealthy. When they felt healthy, they engaged in more social work and regular exercise, had better appetites, lower conflict scores with their children, lower depression, higher satisfaction in life, better physical condition(eye, ear, tooth, mentality and walking), and higher ability of ADL(activities of daily living) and IAD(instrumental activities of daily living). Also, the self-recognized group consumed each food groups (meats, green, yellow and white vegetables, fruits, milks, seaweeds, beans) more often and showed a higher preference of food. The results of this study indicate that self-recognized health status affects every pattern of life among the elderly. As a result, comprehensive education(such as nutrition, health, physical and psychological education) should be offered to the elderly.

• Korean Journal of Child Studies
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• v.33 no.4
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• pp.107-127
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• 2012

This study investigates the factors influencing service outcomes of group homes and residential care centers, as well as the factors causing any differences between the two service outcomes. 119 and 137 5-6th graders were selected from group homes and residential care centers respectively, using the cluster sampling method. Multiple regression and Blinder-Oaxaca decomposition were used in this study. The results revealed that 'stigma', 'school adjustment', and 'social support' were significant factors influencing service outcomes among children in group homes, while 'stigma', 'primary caregivers' attitude', and 'peer relations' were identified as significant factors among children in residential care centers. The study also found that the mean service outcome score for group homes was higher than that of residential care centers. The 74 percent of this difference in the mean scores was due to the difference in children' characteristics of the two out-of-home care service types. The remaining 26 percent of this difference was due to unobserved characteristics. Finally, the implications of this study in child welfare practices were also discussed.

• Journal of Korean Public Health Nursing
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• v.26 no.3
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• pp.547-560
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• 2012

Purpose: The purpose of this study was to investigate factors influencing internet addiction proneness and condition of internet use in higher grade students at an elementary school. Method: The subjects consisted of 234 sixth grade students at an elementary school in Gyeonggido. SPSS/Win18.0 was used for analysis of data. Results: Among the subjects, 51.3% had used the internet for more than three years, 89.3% used the internet in their home, and 38.5% used the internet for games. In internet addition proneness, 3.1% were potential risk users and 1.3% were high risk users. Internet addiction proneness differed significantly according to gender, period of internet use, internet access location, and purpose of internet use. Internet addiction proneness showed negative correlation with protective factors and positive correlation with risk factors. The factors affecting the internet addiction proneness were degree of internet use, peer protective factor(support from peer), personal protective factor(self-control), internet access location, and family risk factor(negative communication). These factors accounted for 32.9% of internet addiction proneness. Conclusion: Strategies are needed for improvement of the relationship with the peer group and family communication and to encourage self-control for prevention of internet addiction in elementary school students in community mental health service.