• 자원환경지질
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• 제35권3호
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• pp.257-271
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• 2002

도시지역의 오염된 우수관퇴적물과 관련된 주요 관심사항 중의 하나는 산성비의 pH와 탄산염광물의 완충역할에 따른 중금속 원소의 단기적인 유동도이다. 탄산염광물의 완충역할은 적정법에 의해 평가되었다. 용출실험은 다양한 초기 질산농도를 갖는 용액으로 24 시간동안 실시하였다. 우수관퇴적물은 주로 방해석과 백운석에 의해 완충되는 것으로 나타났다. 탄산염광물을 많이 함유하고 있는 퇴적물 시료의 경우, pH가 산도 (acidity)의 증가에 따라 서서히 감소하였다. 탄산염광물을 덜 함유하고 있는 퇴적물 시료는 pH가 2 정도까지 급격하게 감소하다가 그 이후 천천히 감소하였다. 용출반응은 산용액이 더 첨가되어 탄산염광물의 완충역할을 완전하게 소모할 때까지 늦어졌다. pH가 감소됨에 따라 반응액의 아연, 구리, 납 및 망간 함량은 급격하게 증가하는 반면, 카드뮴, 코발트, 니켈, 크롬 및 철의 용해는 매우 느리며 제한적이었다. 중금속 원소의 용해도는 반응액의 pH값 뿐만아니라 퇴적물 입자와 수반된 금속원소의 존재형태에 의존한다. 약 산성환경에서, 아연, 카드뮴, 코발트, 니켈 및 구리의 용해작용이 점차적으로 중요해졌다. 용출실험으로부터, pH 5에서의 중금속 원소의 상대적인 유동도는 다음과 같다: 아연>카드뮴>코발트>니켈>구리>>납>크롬. 이는 약한 산성비가 오염된 우수관퇴적물로부터 아연, 카드뮴, 코발트, 니켈 및 구리를 용출시기는 반면에 납과 크롬은 용출시키지 못한다는 것을 지시한다. 방해석과 백운석 등의 탄산염광물의 완충역할은 심하게 오염된 우수관 퇴적물의 용출반응을 늦어지게 할 뿐 아니라 제한하는 데 중요한 역할을 하고 있다. 이와 간은 2차적인 환경오염은 퇴적물에 있는 금속원소가 산성비에 의해 얼마나 잘 용출되는 가에 의해 좌우된다. 물리화학적인 환경변화는 중금속에 의한 심각한 환경오염을 야기시킬 수 있다. 이런 연구결과는 오염된 퇴적물의 관리에 고려되어야 한다.

• 한국콘텐츠학회논문지
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• 제21권5호
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• pp.465-476
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• 2021

이 연구는 불법 성콘텐츠 접촉과 불법 성콘텐츠 유통의 그 원인요인들 및 통제요인들을 제시하고 그 요인들 간의 상호작용효과를 각각 살펴보고 비교하였다. 원인요인으로는 낮은 자기통제력, 불법 성콘텐츠 경험 친구, 그리고 가부장가정 요인을, 그리고 통제요인들로는 도덕태도, 공식처벌, 기회제약을 다뤘다. 그리고 세 원인요인들의 영향에 대한 세 통제요인들의 조절 혹은 완충효과를 살펴보았다. 서울시 대학생을 조사대상으로 하는 분석결과 대체로 불법 성콘텐츠 접촉과 불법 성콘텐츠 유통에서 그 원인요인들의 작용은 유사해 낮은 자기통제력, 불법 성콘텐츠 경험 친구, 그리고 가부장가정 모두가 크게 유의미했고 그 중에서도 불법 성콘텐츠 경험 친구와의 접촉의 영향력이 가장 컸다. 불법 성콘텐츠 접촉 및 유통에 대한 원인요인들과 통제요인들의 상호작용효과에 대한 결과를 보면 그 결과가 상이했다. 불법 성콘텐츠 접촉의 경우 원인요인들과 통제요인들과의 상호작용효과가 모두 유의미하지 않았다. 즉 불법 성콘텐츠 접촉에서는 원인요인 모두가 독립적으로만 유의미하게 작동했으며 그 작용을 어떠한 통제요인들도 통제하지 못했다. 그러나 불법 성콘텐츠 유통의 경우는 낮은 자기통제력과 도덕태도간의 상호작용효과, 불법 성콘텐츠 유통 친구와 도덕태도간의 상호작용효과가 유의미했고, 가부장가정과 공식처벌간의, 그리고 가부장가정과 기회제약간의 상호작용효과가 유의미했다. 그 결과의 함의를 논의한다.

• 아동학회지
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• 제31권2호
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• pp.229-242
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• 2010

This study sought to examine the effects of child-parent attachment and its concordance with children's peer status. The subjects were 110 5-6 year old kindergarteners (48 boys & 62 girls) and they were asked to respond to the Attachment Story Completion Task by Bretherton & Cassidy (1990) and the peer rating scale by Asher, Singleton, Tinsley & Hymel (1979). Our results indicate that the secure mother-child and father-child attachment groups had higher peer status than the insecure attachment groups. The insecure-avoidant groups had the lowest peer status. Young children who were securely attached to both parents and at least one parent had higher peer status than who were found to be insecurely attached to both parents. The implications for parent education for enhancing peer relations were also discussed.

• 한국치위생학회지
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• 제20권5호
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• pp.753-762
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• 2020

Objectives: This study was aimed at evaluating the effects of changes in the oral environment of the elderly in long-term care facilities after the intake of Weissella cibaria. Methods: The test group ingested the W. cibaria strain Chonnam Medical University (CMU), and the control group ingested the control food. Of all randomized trial subjects, 62 were analyzed (32 in the experimental group and 30 in the control group). In this 8-week demographic study, we evaluated self-perceived halitosis, changes in halitosis, sensory test results, tongue plaque index scores, saliva buffering capacity, and the salivary flow rate. Results: The W. cibaria CMU intake in the elderly in long-term care facilities during the experimental period did not demonstrate statistically significant changes in the salivary flow rate. However, self-perceived halitosis, organoleptic test results, tongue plaque index scores, and salivary buffering capacity demonstrated statistically significant differences between the experimental and control groups. These findings partially confirmed the beneficial effects of the W. cibaria CMU on the oral environment in the elderly. Conclusions: Research results on the role of probiotics in the oral cavity should be summarized, and utilization plans should be sought to obtain a clearer understanding of the clinical efficacy and related factors. The value of probiotic use may be high in improving the oral health of people by enabling treatment and prevention.

• 한국콘텐츠학회논문지
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• 제22권2호
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• pp.803-812
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• 2022

본 연구의 목적은 무아관이 중년기 성인이 겪는 생활사건 스트레스의 부정적인 영향을 감소시키는지 검증하는 것이다. 40대와 50대 성인남녀 207명을 대상으로 온라인 설문조사를 실시하였으며, 위계적 회귀분석 및 단순 기울기 분석을 실시하였다. 그 결과, 무아관은 생활사건 스트레스가 지각된 스트레스 및 주관적 안녕감에 미치는 부정적인 효과를 조절하는 것으로 밝혀졌다. 구체적으로 무아관은 생활사건 스트레스가 지각된 스트레스에 미치는 정적인 효과를 감소시키고, 주관적 안녕감에 미치는 부적인 효과를 감소시켰다. 본 연구의 결과는 동양적·불교적 자기관인 무아관이 중년기의 성인이 겪는 생활사건 스트레스에 대한 완충효과를 갖는다는 것을 의미한다. 본 연구는 상담 및 임상 장면에서 무아관을 중년기 성인의 스트레스에 대처하기 위한 중요한 요소로 고려해야 한다는 것을 시사한다. 그리고 본 연구는 불교적 개념인 무아에 관한 후속 실증연구를 촉진시킬 것으로 예상된다. 마지막으로 한계점 및 후속연구를 제언하였다.

• 대한치과교정학회지
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• 제6권1호
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• pp.47-54
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• 1976

This study was conducted to investigate the effects of multibanded orthodontic appliances on dental caries activity. The subjects consisted of 50 males and females with multibanded orthodontic appliance and the same number of caries free group. The following conclusions were obtained, 1. There was significant difference between the experimental group and control group in the tests of Snyder colorimetric test, acid :buffering capacity and oral glucose clearance test (at $5\%$ level of significance). 2. There was no significant difference between the experimental group and control group in the tests of unstimulated salivary flow fate, stimulated salivary flow rate and salivary viscosity test (at $5\%$ level of significance). 3. Dental caries activity was higher in experimental group than in control group.

• 아동학회지
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• 제28권2호
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• pp.205-216
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• 2007

Instruments used in this study of social support effects on the behavioral problems of children raised by their grandparents compared with children raised by their parents were the revised Social Support Appraisal (Dubow & Ulman 1989) and the revised Children Behavior Criteria (Achenbach, 1991). Results showed that, compared with children raised by their parents, children raised by their grandparents engaged in (1) more excessive, nervous and immature behavior; (2) were aware of less support of friends and family (3) When given a higher degree of support from friends they engaged more excessive and aggressive behavior and (4) They displayed counter-buffering effects, namely immature behavior when given higher family support.

• 지식경영연구
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• 제15권1호
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• pp.21-43
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• 2014

This paper investigate relationship between job burnout, social support and knowledge creation, sharing. also, social support are moderate on the relationship between job burnout and knowledge creation, sharing. We build up main effect and moderating effect hypothesis. To test hypothesis, survey method are performed. The results are as follows. first, emotional exhaustion and low personal accomplishment have negative effects on knowledge creation, but haven't effect on knowledge sharing. second, social support significant positively impact on knowledge creation and sharing. third, both of supervisor' support and coworker's support partially moderate the relationship between job burnout and knowledge creation, sharing. especially, emotional exhaustion reduce supervisor' support to knowledge creation, sharing and low personal accomplishment reduce co-worker' support to knowledge sharing, which means although job burnout preceded, if employees perceived high level of social support that have buffering effects on the relationships.

• 간호행정학회지
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• 제18권3호
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• pp.271-280
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• 2012

Purpose: The purpose of this study was to identify the effects of social support and emotional intelligence in the relationship between emotional labor and burnout among clinical nurses. Methods: The sample for this study consisted of 382 nurses from four hospitals located in Seoul or Gyunggi Province. Data were analyzed using frequency, percentage, mean, standard deviation, t-test, ANOVA, Scheff$\acute{e}$ test, Pearson Correlation, Hierarchical Multiple Regression, and Path Analysis. Results: It was found that: (a) emotional labor had a positive effect on burnout, while social support and emotional intelligence had negative effects on burnout; (b) social support and emotional intelligence moderated the relationship between emotional labor and burnout, and (c) social support mediated the relationship between emotional labor and burnout, whereas emotional intelligence did not. Conclusion: The results of the study indicate that high levels of support had a buffering effect and mitigated the negative effects of the emotional labor on burnout. Therefore, strategies to enhance social support for nurses are needed and further research needs to be done to refine this study.

• 한국사회복지학
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• 제45권
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• pp.315-340
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• 2001

The purpose of study is to examine the effects of family support on the life satisfaction of elderly with disabilities and provide a ground necessary to improve it. Research was conducted on 167 elderly with hearing, visual and physical disabilities aged over 60 who were living in Seoul and Pusan. Telephone survey, sign language and interview, in accordance with types of disability, were adopted to collect data effectively. That is telephone survey was used for elderly with visual impairment whereas face-to-face interview for physical impairment and sign language for hearing impairment by volunteers. Collected data were analyzed, using hierarchical regression analysis. This study utilized two different models, direct effect model and buffering effect of social support in order to examine the effects of familial support on the life satisfaction of elderly with disabilities. Research findings suggest that the level of life satisfaction appeared to be low in general among elderly with disabilities and emotional family support exerted a positive effect on life satisfaction. In addition, it is empirically supported that emotional family support buffered the negative effect of economic limitations on life satisfaction. In other words, the effects of economic limitations as stress factor decreased with the increase in the frequency of emotional support, however, the level of life satisfaction decreased at a mercy of the stress factor of economic limitations with the decrease in the frequency of emotional support. Finally, this paper attempted to provide some alternatives to effectively improve life satisfaction among elderly with disabilities based on empirical findings.