• 한국언론정보학보
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• 제76권
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• pp.92-123
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• 2016

이 연구의 목적은 외국인 범죄 뉴스 접촉이 수용자의 다문화수용성에 어떠한 방식으로 영향을 미치는지 체계적으로 규명하는 데 있다. 특히 미디어와 커뮤니케이션의 유형에 따라 외국인 범죄 뉴스 접촉의 효과가 어떻게 다르게 나타나는지 살폈다. 또한 범죄에 대한 위험지각을 매개변인으로 설정하여 외국인 범죄 뉴스가 어떠한 과정을 통해 수용자의 다문화수용성에 영향을 미치는지 밝혔다. 분석 결과 자신의 주변에서 외국인 범죄가 발생할 수 있다는 지각에는 다양한 정보원천과 커뮤니케이션 채널이 영향을 미치지만, 사회적으로 외국인 범죄가 만연해 있다는 지각에는 텔레비전의 영향력이 두드러지는 것으로 나타났다(연구문제 1). 대화형 매체를 통한 외국인 범죄 뉴스 접촉은 다문화수용성에 유의한 영향을 미치지 않는 반면 담론형 매체를 통한 접촉과 대면 대화를 통한 접촉은 수용자의 다문화수용성에 부정적인 영향을 미치는 것으로 나타났다(연구문제 2). 담론형 매체를 통한 범죄 뉴스 접촉이 다문화수용성에 영향을 미치는데 있어 사회 수준의 위험지각은 완전매개(full mediation) 역할을 하는 것으로 나타났다(연구문제 3). 이러한 결과를 바탕으로 이론적 함의와 실천적 함의를 논의하였다.

• 한국환경보건학회지
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• 제44권6호
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• pp.548-555
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• 2018

Objectives: We conducted ecological risk assessment for cadmium, a heavy metal and carcinogen, to identify safety standards by environmental media and to determine its impact on ecosystems by estimating and evaluating exposure levels. Methods: Species sensitivity distributions (SSDs) were generated using ECOTOX DB. A hazardous concentration of 5% (HC5) protective of most species (95%) in the environment was estimated. Using this estimate, predicted no effect concentrations (PNECs) were calculated for aquatic organisms. Based on the calculated PNECs for aquatic organisms, PNEC values for soil and sediment were calculated using the partition coefficient. Predicted exposure concentrations (PECs) were also calculated from environmental monitoring data with hazard quotients (HQs) calculated using PNECs for environmental media. Results: Chronic toxicity data were categorized into four groups and 11 species. In species sensitivity distribution (SSD) analysis, HC5 was $0.340{\mu}g/L$. Based on this value, the PNEC value for aquatic organisms was calculated as $0.113{\mu}g/L$. PNEC values for soil and sediments using a partition coefficient were calculated as 15.02 mg/kg and 90.61 mg/kg, respectively. In an analysis of environmental monitoring data, PEC values were calculated as $0.017{\mu}g/L$ for water, 1.01 mg/kg for soil, and 0.521 mg/kg for sediment. Conclusions: HQs were 0.150, 0.067 and 0.006 for water, soil and sediment, respectively. HQs of secondary toxicity were 0.365 for birds and 0.024 for mammals. In principle, it is judged that an HQ above 1 indicates a high level of risk concern while an HQ less than 1 indicates an extremely low level of risk concern. Therefore, with HQs of cadmium in the environment being <1, its risk levels can be considered low for each media.

• 한국지하수토양환경학회지:지하수토양환경
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• 제18권1호
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• pp.16-25
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• 2013

The Korean groundwater law regulates 20 groundwater contamination parameters, including 14 specific harmful substances. Expanding the number of groundwater quality standards are needed to cope with recent groundwater quality deterioration due to the use of various chemicals. Chemical ranking and scoring system (CRS) is a scientific tool to sort priority chemicals by considering exposure and toxicity potentials. In this study, we developed a CRS for scoring and ranking of possible groundwater pollutants and screened priority substances to be later considered in the Korean standard expansion. Chemical Ranking Of groundWater pollutaNts (CROWN) incorporates important parameters consisting of exposure potential, human and water ecotoxicity, interests, and certainty. Furthermore, CROWN additionally evaluated existence of other media standards to consider impacts by contamination of other media. The 197 substances that were common to 9 countries were selected first. CROWN evaluated and ranked each chemical, and finally suggested priority substances. Suggested priority substances were classified into two groups according to the groundwater use purposes: drinking and non-drinking. The priority substances were further classified into $1^{st}$ and $2^{nd}$ group priorities. The $1^{st}$ group consists of 75 substances, including the all the Korean groundwater standard parameters. CROWN will be used in selecting groundwater pollutants for possible inclusion in the Korean standard expansion.

• Journal of Nutrition and Health
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• 제31권4호
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• pp.739-746
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• 1998

This study was designed to investigated the antitumor effect and change chemosensitivity of chitosan in 2 kinds of humen lung cancer cell lines(NCI-H522, NCI-H596). To evaluate the antitumor effect and synergistic effectof chomosensitivity, MTT assay was used in vitro. then anticancer drugs used were 챤-platin , ectoposide, and adrimycin. The results of this study were as follows; Chitosan shwoed in antitumor effect on both NCI-H522 and NCI-H596. The lung cancer viability percent for NCI-H522 and NCL-H596 showed at the lowest levels of 5.31 and 5.33% when the concentration of chitosan was 25mg/$m\ell$ media and the exposure time of chitosan was 72 hours. ID50 value of chitosan on both NCI-H522 and NCI-H596 showed at the lowest levels of 14.07, 11.68 mg/$m\ell$ media when the exposure time of chitosan was 72 hours. the synergistic effect of chomosensitivity was better in NCI-H596 than in NCI0H522 . When the synergistic effect of chomosensitivity was shown according to the kind of the anticancer drugs, in case of NCI-H522 , in the concentration of 100$\mu\textrm{g}$/$m\ell$, ectoposide showed the highest synergistic effect of chomosensitivity and then was adrimycin In case of NCI-H596, in the concentration of 100$\mu\textrm{g}$/$m\ell$,, the order of the synergistic effect of chomosensitivity was ectoposide>adrimycin>cis-platin and in the concentration of 10$\mu\textrm{g}$/$m\ell$, ectoposide>cis-platin >adrimycin. It is concluded that chitosan is an active antitumor agent and is increased chomosensitivity though there is difference according to the kind and the concentration of anticancer drugs. But to be sued to lung cancer theraphy, further studies on toxicity, the mechanism of action, animal experiment are wanted.

• Journal of Life Science
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• 제12권2호
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• pp.47-52
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• 2002

Saccharomyces cerevisiae KNU5377 (KNU5377) and S. cerevisiae ATCC24858 (ATCC24858) were exposed to $H_2SO_4$ as a stress, which was added at various concentrations to a YPD media. The growth of KNU5377 was reduced to approximately 60% in the YPD media containing 40 nm sulfuric acid when compared to the non-stressed condition. When their growth was monitored during an overnight culture, two strains, KNU5377 and ATCC24858, could not grow when exposed to over 50 mM of sulfuric acid. After a short exposure to this acid for 1 h, KNU5377 exhibited stronger resistance against $H_2SO_4$ than ATCC24858. The neutral trehalase activity of KNU5377 unchanged despite under various concentrations of $H_2SO_4$. In contrast, It at of ATCC24858 was much low at higher $H_2SO_4$concentrations. Trehalose, a non-reducing disaccharide, was maximally accumulated after a short exposure to 60 nm $H_2SO_4$ for KNU5377, but it was reduced under more severe stressful conditions. These results suggest that KNU5377 should modulate the trehalose concentrations under the severe stress condition of high sulfuric acid concentrations. The most highly induced protein in the KNU5377 exposed to sulfuric acid was found to be an approximately 23 kDa protein, which was revealed to be the 605 large subunit ribosomal protein, Ll3 by FASTA search results.

• 스마트미디어저널
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• 제7권3호
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• pp.64-71
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• 2018

무인항공기의 활용분야가 국방, 산업, 엔터테인먼트 그리고 개인의 취미영역까지 여러 분야로 급속히 확대되고 있다. 다수의 무인항공기 운영으로 인해, 목적지 이외의 지역으로 비행경로 오류가 발생하고, 적대적 국가의 무인항공기 탈취로 인한 안보 위협과 불법 영상촬영에 따른 개인정보 노출로 인한 2차 피해까지 보안의 여러 문제점이 증가되고 있다. 본 논문은 이러한 보안 이슈에 대해, GPS 스푸핑, 촬영한 영상정보 다운로드 해킹, 전파 재밍을 통한 신호 감쇄로 오작동, 영상 촬영 자료로 인한 개인정보 노출 등 보안 취약점을 발견하였다. 이를 해결하기 위해, GPS 스푸핑 공격 방지, VPN(Virture Private Network)을 활용한 영상촬영 정보 구간의 암호화를 설정하여 비정형 데이터의 안정성을 확보하였다. 또한, 무인항공기 촬영 개인정보 노출에 따른 2차 피해를 최소화하고 안전성을 확보하기 위한 방안으로 개인정보 암호화와 마스킹 기법을 적용하여, 데이터의 무결성을 확보 하였다. 점차 증가되는 무인항공기의 응용분야에서 안전한 사용과 산업 활성화에도 기여 할 것으로 기대한다.

• 대한본초학회지
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• 제36권5호
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• pp.1-14
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• 2021

Objectives : From January 2020, when the first confirmed case of COVID-19 in Korea, the use of health information using the Internet is expected to increase. It is expected that there will be a significant change in the general public's interest in Korean herbal medicines for health care. Therefore, in this study, we tried to confirm the change in the search trend of Korean herbal medicines after the COVID-19 epidemic. Methods : Using the "Naver DataLab (http://datalab.naver.com)" service of a Korean portal site Naver, search volume was investigated with 606 Korean herbal medicines as keywords. The search period was from January 2020, right after the onset of COVID-19, to June 2021. The search results were sorted by the peak search volume and the total search volume. Results : 'Cheonsangap (천산갑, 穿山甲, Manitis Squama)' was the most searched Korean herbal medicine in the peak search volume and total search volume with least bias. Conclusions : The problem of supply and demand of Korean herbal medicines of high public interest was identified. Broadcasting and media exposure were the factors that had a big impact on the search volume for Korean herbal medicines. As it was confirmed that the search volume for Korean herbal medicines increased rapidly due to media exposure, it is necessary to provide correct information about Korean herbal medicines, improve public awareness, and manage stable supply and demand based on continuous search trend monitoring.

• 문화기술의 융합
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• 제9권1호
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• pp.493-500
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• 2023

본 연구는 학령기 아동의 TV 시청이 창의성에 미치는 영향을 알아보고, 아동의 TV 시청이 창의성에 영향을 주는 관계에서 책 읽기 시간의 조절 효과를 살펴보고자 하였다. 연구 목적을 위해 한국아동패널의 10차년도 자료를 사용하여 만 9세 아동의 TV 시청 시간, 책 읽기 시간, 초등 도형 창의성 검사(K-FCTES)에서의 수행 간의 관계를 분석하였다. 연구 결과, 아동의 TV 시청 시간과 창의성 간에 부적 상관관계가 나타났으며, 아동의 책 읽기 시간과 창의성 간에는 정적 상관관계가 나타났다. 또한, 아동의 TV 시간은 아동의 창의성에 통계적으로 유의미하게 부정적인 영향을 미치고, 아동의 책 읽기 시간은 이 관계를 조절하였다. 본 연구는 출생과 함께 다양한 미디어에 노출되어 디지털 네이티브로 성장하고 있는 오늘날의 아동의 창의성 발달을 위해 고려해야 하는 미디어 노출의 부정적인 영향을 확인하였고 그 영향을 조절할 수 있는 요인으로 책 읽기의 중요성을 보여준다는 점에서 의의가 있다.

• Journal of Preventive Medicine and Public Health
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• 제56권6호
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• pp.523-532
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• 2023

Objectives: During the second coronavirus disease 2019 (COVID-19) surge, cases increased sharply due to low awareness and compliance with measures to limit disease spread. Health literacy (HL) is an important component of public health initiatives, and schools are potential sources of health education to increase HL via the presentation of COVID-19 educational modules. Methods: This cross-sectional study involved an online questionnaire administered to students from 5 high schools in Surabaya and Sidoarjo, Indonesia, 6-7 weeks after the start of government-issued directives restricting public gatherings. We collected data on each respondent's age, gender, parental education, and socioeconomic variables. HL was determined by the Health Literacy Measure for Adolescents. We additionally measured their attitudes and behaviors related to preventing the spread of COVID-19. The students were asked if they watched the COVID-19 module at school, their feelings about vaccination, and preferred online sources of COVID-19-related information. Results: Most of the 432 respondents had viewed COVID-19 modules at school. Module exposure was associated with significantly higher total and domain-specific HL and more positive attitudes toward government-issued COVID-19 restrictions on travel and public gatherings (p<0.05). However, behaviors to prevent COVID-19 spread and vaccine acceptance were not associated with module exposure. Most students chose social media as their source of COVID-19-related information. Conclusions: Schools can provide information to increase adolescents' HL and the public's support for health initiatives to prevent or limit the spread of COVID-19.

• 한국콘텐츠학회논문지
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• 제20권2호
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• pp.499-510
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• 2020

본 연구의 목적은 최근 심각한 사회문제로 대두되고 있는 인터넷 혐오표현의 원인과 대응방안을 모색하는 것이다. 혐오표현을 경험한 대학생들의 에세이 분석을 통해 인터넷 혐오표현에 대한 노출 실태를 분석했으며, 전문가 심층인터뷰를 통해 인터넷 혐오표현 확산의 원인을 진단하고 대응방안을 제시했다. 대학생들은 인터넷에서 여성, 노인, 성소수자, 지역 대상의 혐오표현을 경험했으며, 혐오표현을 확산시키는 주요 매체는 뉴스 댓글과 SNS, 온라인 게임이었다. 인터넷 혐오표현의 원인은 개인적 차원에서 인간 존엄성에 대한 인식 부족, 미디어 리터러시 능력의 부재 등으로, 사회적 차원에서 차별과 혐오에 대한 교육의 미흡, 혐오표현을 재생산하는 미디어 등으로 분석됐다. 이와 함께 법·제도적, 사회적, 교육적 차원에서 인터넷 혐오표현 문제를 개선하는 방안이 제시되었다.