• 한국심리학회지 : 문화 및 사회문제
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• 제9권2호
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• pp.19-39
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• 2003

본 연구는 청소년들의 인터넷 이용현황과 인식도 그리고 중독성향을 조사하고, 인터넷 중독에 영향을 주는 변인들과의 관계를 탐색하는데 목적이 있다. 본 연구의 대상은 대구지역 중학교와 인문·실업계 고등학교 남녀 학생 500명이며, 자료분석의 대상은 445명이다. 본 연구에서 사용된 설문지는 "인터넷 이용에 관한 조사지"와 "인터넷 중독 평정척도"로써, 본 연구자에 의해 개발되거나 재구성된 것이다. 인터넷 이용 조사지는 전체 16개 문항의 선다형 검사이며, 인터넷 중독척도는 20개 문항으로 된 5점 평정척도이다. 자료처리를 위해 chisqure 분석법과 ANOVA가 적용되었다. 연구의 결과 인터넷 이용현황과 인식도 대부분은 남녀간과 교급간에 각각 의미있는 차이가 있으며, 대체로 남학생이 여학생보다 인터넷의 부정적 환경에 더 많이 노출되어 있고, 실업고와 중학생의 부정적 반응이 많았다. 그러나, 음란물과 폭력물의 접촉 빈도는 인문고 학생들이 상대적으로 높은 반응을 나타내었다. 그리고 인터넷 중독성향은 남학생이 여학생보다 더 높으며, 교급간에는 의미있는 차이가 없었다. 그리고 중독성향은 인터넷 일일 이용시간이 많을수록, 기록형 게임을 많이 할수록, 그리고 음란물 및 폭력물 접촉빈도가 높을수록 의미있게 더 높았다. 연구결과는 선행연구에 기초하여 논의되었다.

• 보건교육건강증진학회지
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• 제24권4호
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• pp.181-200
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• 2007

Objectives: A content analysis was conducted to examine whether the current school textbooks providing smoking information are effective or not. Methods: The authors reviewed 111 qualified textbooks using elementary through high schools during 2006-2007 academic year in Korea. Educational components were coded with an analysis tool developed through the present research. Result: Tobacco education components were narrowly focused on long-term physiological consequences of tobacco use, addictiveness, and harmful ingredients and they were repetitively shown in the textbooks. Negative health consequences such as lung cancer were emphasized 10 times among 12 smoking-related textbooks. Educational messages or contents are mainly based on medical knowledge (72%) rather than psycho-social components. The US school-based smoking prevention programs, however, employ psycho-social approach with cognitive and life-skill components and they contain only 7-17% of smoking-related medical knowledge. In order to increase psycho-social smoking prevention components in Korean textbooks, the present study identified social subjects of textbooks (and relating core sessions) for elementary, middle, and high school. It also provided guidelines for school instructors to use. Conclusion: Adolescent smoking behavior is not caused by the deficit of health information, but mostly by social influences including media and peer pressure. School textbooks proving smoking information need to increase psycho-social context. One of the most effective ways as a psycho-social smoking prevention program is to use social subjects (or curriculum) of textbooks such as social studies, ethics, social cultures, social environment, and home management.

• 상하수도학회지
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• 제31권1호
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• pp.39-50
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• 2017

In the coagulation/sedimentation (C/S) process of the water treatment process, the inflow of massive algal bloom causes many problems including fouling of filter media. This study was conducted to find out the way to remove the algae's harmful effects by addition of pre-treatment prior to C/S process. Many Jar-tests were conducted such as (1) ACF (Algae Coagulation Flotation) process using natural algae coagulant (Water $Health^{(R)}$), (2) ACF + C/S process and (3) C/S process with a variety of conditions using cultured algae. The average values of turbidity were (1) 0.42 NTU for ACF process, (2) 0.13 NTU for ACF + C/S process and (3) 0.25 NTU for C/S process. It was shown that the treatment efficiency of ACF process could get low turbidity results, and ACF + C/S process could achieve more efficient results than those of C/S process. Any negative effects of ACF process to the efficiency of C/S process were not observed in ACF + C/S process. In order to reduce the unfavorable effects of algae, it was found out that the introduction of ACF process in the forms of (1) ACF or (2) ACF + C/S could be one of the effective and alternative solutions.

• 정보교육학회논문지
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• 제14권4호
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• pp.571-588
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• 2010

방송통신융합 기술의 발전으로 등장한 IPTV는 고화질, 고선명성, 편안한 시청, 교육 외 유해 정보 차단 등 여러 가지 장점을 제공하는 교육매체이다. 동시에 IPTV는 학습자의 주도적 학습이 뒷받침되어야 교육 효과를 향상시킬 수 있는 교육매체이다. IPTV 활용 교육에 대한 연구는 아직 도입 단계로 수업을 실행하는 교수자나 콘텐츠 개발자의 관점에 머물러 있고, IPTV를 활용하여 학습하는 학습자에게 요구되는 학습 전략을 반영한 학습 시나리오를 개발하거나 구현 방안을 제시한 연구는 미흡한 실정이다. 이에 본 연구에서는 IPTV 학습의 주체가 될 학습자를 대상으로 IPTV 학습행태 및 의향에 대해 조사하고 결과를 수렴한 후, 자기조절학습전략을 중심으로 IPTV를 활용한 학습 시나리오를 도출하고 이를 구현할 수 있는 방안을 모색하였다.

• 한국작물학회지
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• 제40권4호
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• pp.487-493
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• 1995

본 실험은 콩나물 재배과정 중에 일어나는 부패문제를 해결하기 위하여 사용이 허가된 산성 식품 첨가제들을 대상으로 그 이용 가능성을 찾아보고자 수행되었다. 다소 노화된 은하콩을 재료로 콩나물 배축의 부패에 관여하는 균(부패균)을 순수 분리하여 그 특성을 조사하였고, propionic acid 등 8가지 약제처리가 부패균의 증식 억제효과를 인왕배지상에서 검토하였다. 또한 1% 이하의 약액처리가 콩나물 발아와 유묘생장에 미치는 영향을 조사하여 약해유발의 가능성도 검토하였으며 그 결과들을 요약하면 다음과 같다. 1. 부패균으로 확인된 3종류의 균계를 대상으로 Gram stain등 8가지 미생물학적 검정을 통하여 분석한 결과 상호 약간의 특성 차이는 있었으나 Pseudomonas속의 균계로 판단되었으며, 분리된 곰팡이류 중에는 부패균이 없었다. 2. 5% 이상의 농도에서는 공시약제 중 sodium hypochlorite의 부패균 증식억제 효과가 가장 컸으나 발아를 극심하게 저해하여 실용성이 없다고 판단되었다. 3. Propionic acid, acetic acid, calcium propionate, sodium propionate등의 약제 효과가 큰 것으로 나타났는데 propionic acid와 acetic acid의 효과가 상대적으로 더 뚜렷하였다. 4. Propionic acid, acetic acd, calcium propionate, sodium propionate 등의 선발된 4가지 약제는 1.0% 및 그 이하의 농도에서도 다소의 부패균 증식억제 효과가 나타나 부패경감제로서의 충분한 이용 가능성을 보였다. 5. 1%이하의 용액에 콩종자를 침지처리 하였을 때 무처리에 비해 선발된 4가지 약제처리에서 모두 발아율, 초기생육 및 비정상발아 개체율에서 차이를 나타내지 않아 약해는 문제시 되지 않을 것으로 판단되었다.

• 한국연초학회지
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• 제32권1호
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• pp.19-27
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• 2010

The aim of this study is to compare the sensitivity of both two NCI-H292 and A549 cell types to acute inflammatory responses induced by cigarette smoke. For this, we treated two kinds of smoke fractions derived from 2R4F reference cigarettes: total particulate matter(TPM) collected onto a Cambridge filter pad and gas/vapor phase(GVP) prepared by bubbling through in buffer solution. When we measured cellular cytotoxicity by neutral red uptake assay after treatment for 24 hours, TPM and GVP induced cytotoxic effect in a dose-dependent manner in the range of 10-$100{\mu}g$/mL and 60-$300 {\mu}g$/mL., respectively, in both cell types without any cellular difference. Additionally, when we examined acute inflammatory responses by analyzing cytokines secreted into culture media including tumor necrosis factor-$\alpha$ (TNF-$\alpha$), interleukin-8(IL-8), and transforming growth factor-$\alpha$(TGF-$\alpha$) as well as matrix metalloproteinase-1(MMP-1), the treatment with smoke fractions increased those marker proteins in a dose-dependent manner in NCI-H292. Meanwhile, in A549 cells only MMP-1 was observed to be increased in a dose-dependent fashion. Collectively, our data indicate that NCI-H292 cell type is more sensitive to cigarette smoke-induced inflammatory response than A549 cells. This suggests that NCI-H292 could be useful as an in vitro evaluation tool to assess harmful effects of cigarette smoke.

• 컴퓨터교육학회논문지
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• 제14권6호
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• pp.1-10
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• 2011

급속한 정보사회의 발달에 따른 사용자 윤리의식의 문제점을 논하는 기존의 많은 정책과 연구보고서에서는 그에 따른 해결책을 논의하고 있지만 이는 사후방법론의 한계를 벗어나지 못하고 있는 실정이다. 이에 본 논문에서는 역기능의 문제점을 사후 해결책이 아닌 예방차원에서의 해결책을 모색하고자 역기능분류의 표준안 모델을 제시하고자 한다. 본 연구자가 제시하는 역기능 분류의 표준 모델은 사회적 현상이라는 관점에서 현재까지 역기능의 피해사례를 조사 및 분석하여 1 2차 전문가 설문을 통해 미디어 중독, 유해콘텐츠, 사이버폭력, 권리침해, 사이버테러, 판단장해 등의 6영역으로 분류하였다. 제시된 표준안 모델은 현재의 정보화 사회에 발생할 수 있는 역기능뿐만 아니라 미래 사회에 발생할 수 있는 역기능의 문제점까지 포괄적으로 수용할 수 있도록 영역을 확장하였으며 이를 통해 역기능의 피해를 미연에 방지 혹은 예방할 수 있는 사회적 또는 교육적 방안을 제시할 수 있으리라 기대한다.

• Asian Pacific Journal of Cancer Prevention
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• 제17권1호
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• pp.139-145
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• 2016

Environmental tobacco smoke (ETS) is a major public health problem for all ages. Despite the high prevalence of smoking among the Saudi population, there is limited information about levels of urinary cotinine in Saudi children exposed to SHS. The aim of the study was to assess the exposure of schoolchildren to ETS, and measure their urinary cotinine levels. Multistage cluster sampling was carried out, where schoolchildren from 4 schools were randomly chosen from primary schools in Taif city. A questionnaire including questions on SHS exposure and smoking rules in the residence were sent to students parents/guardians. Urine samples were taken and analyzed for total cotinine using chemiluminescent immunoassay. Of the studied children, 38.4% had a smoking father, 61.8%, 41.2% and 49.3% of them were exposed to ETS indoors, outdoors and both indoors and outdoors respectively. The mean urinary cotinine was significantly higher among children exposed to ETS compared to unexposed children. Urinary cotinine levels in children with both indoor and outdoor exposure was significantly higher compared with its level in children with single exposure. A significant positive correlation was found between urinary cotinine concentrations and the number of cigarette packs smoked by parents, and the number of smokers in the residence. The mean urinary cotinine level was significantly higher in children who reported no smoking rules at the residence.. The study revealed a high exposure of Saudi children to ETS. An antismoking media awareness campaign on the harmful effects of ETS should be carried out, in addition to family counseling programs targeted to parents to protect their children from ETS.

• 대한지역사회영양학회지
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• 제15권5호
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• pp.679-686
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• 2010

The purpose of this study is to monitor genetically modified bean sprouts at traditional markets in Seoul and to investigate perception of traditional market merchants and high school students on genetically modified organisms (GMOs). We analyzed 30 bean sprouts that were selected at 11 traditional markets in Seoul using the method of polymerase chain reaction (PCR). Also, we compared perception of GMOs between merchants (n = 30) and students (n = 126). Knowledge test about GMOs was performed by students. The result of PCR, 16.7% of bean sprouts were confirmed as GM bean sprouts (n = 5). Students had significantly more exposure to information about GMOs than merchants (p < 0.05). Major information sources about GMOs were from mass media (television, newspaper and radio). About half of subjects were not aware that they eat GMOs and GMOs are sold to consumers. Only 17.3% of subjects had constant eating intent for GMOs after perceiving foods that he/she usually eats are GMOs. 51.3% of subjects had willingness to purchase GMOs if GMOs have same quality and lower cost than natural foods. 37.2% of subjects thought that GMOs would be harmful to humans. Students had more positive perception of GMOs' side effects than merchants (p < 0.01). There was no merchant who knew labeling of GMOs. 19.1% of students knew labeling of GMOs. Students' mean percentage of correct answers of six questions about GMOs was 45.2%. Therefore, providing adequate information about GMOs is needed for consumer's choice whether to purchase GMOs or not.

• 한국경영과학회지
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• 제37권1호
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• pp.61-71
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• 2012

Other-regarding preferences (such as trust, reciprocity and altruism) between companies, between consumers and retailers, and between employers and employees are integral elements in determining economic performance. Social trust which is a core element of social capital, especially, is known to reduce transaction costs, help solve collective action problems, and contribute to economic, social, and political development. Therefore, social trust has been given a great deal of attention across an array of academic disciplines for its role in promoting cooperation among individuals and groups, and for its positive influence on economic performance. Most studies describe Korea as a low-trust society than Japan or China. To identify the causes of social trust, this paper focuses on differences of social values (perception on competition and wealth accumulation) in 4 countries (Japan, China, Korea, and United States). Based on World Values Survey data, this paper analyzes effects of the social values on social trust. Social trust was measured by degree to which a respondent thinks that most people can be trusted. Perception on competition was measured by the degree to which a respondent thinks that competition is harmful, and perception on wealth accumulation was done by the degree to which a respondent thinks that wealth can grow so there is enough for everyone. The results showed that social trust was affected by perception on competition and wealth accumulation. A respondent showed higher level of social trust when he (or she) perceived positively competition and wealth accumulation. For enhancing social trust in a country, it is not easy to reduce income inequality and corruption which were reported as causes of social trust by previous studies. Compared to them, social values can be changed more easily by various concrete measures like education and mass-media. Differently from previous studies this paper stresses the concrete measures to enhance social trust in a country.