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Generational Differences in News Literacy
Heesoo Jang(장희수),Sugmin Youn(윤석민) 서울대학교 언론정보연구소 2019 언론정보연구 Vol.56 No.3
이 연구는 젊은 세대와 기성 세대의 뉴스 리터러시 차이를 분석할 수 있는 토대로서 ‘뉴스 리터러시’ 개념을 제안하고 이에 관한 실증적 검증을 시도했다. 젊은 세대인 20대와 기성 세대인 50대를 포함한 862명의 성인을 대상으로 온라인 설문조사를 실시한 결과, 젊은 세대는 기존에 뉴스에 무관심하고 무지한 이용자로서 우려된 바와 달리 오히려 뉴스를 이용할 때 더 다양한 경로로 뉴스를 이용하고 더 다양한 잣대로 뉴스를 평가했다. 이는 젊은 세대가 기성 세대에 비해 뉴스 리터러시가 낮은 뉴스 이용자가 아니라 기성세대와 다른 역량으로 구성된 뉴스 리터러시를 가진 뉴스 이용자임을 보여주는 결과다. 이 연구의 결과는 뉴스 리터러시 구성요소를 뉴스 리터러시 모형이라는 하나의 틀로 제시하고, 이 이론틀을 통해 젊은 세대와 기성 세대의 뉴스 리터러시를 실질적으로 비교했다는 점에서 의의가 있다. This study proposed a news literacy model based on previous research and empirically examined how the younger generation and the older generation differ in the three dimensions of news literacy: the knowledge structure, the personal locus, and the competencies and skills. Through an online survey of 862 adults, it has been confirmed that the younger generation is a group of demanding news users who appreciate not only the journalism norm but also the pleasant user environment and optimized screen composition when evaluating the news. In other words, the younger generation used the news in more diverse ways and evaluated the news in a wider range of criteria when using the news. The results of this study directly contradict the prejudice that the younger generation is a group of ignorant and indifferent news users. The results of this study are significant in that the multi-faceted generational differences in news literacy were identified through a news literacy model.
Sangdong Bae,HeeSoo Jang,Jongsang Chung 한국응용곤충학회 2013 한국응용곤충학회 학술대회논문집 Vol.2013 No.10
The BIG11003 strain was isolated as protein-degrading actinomycetes from cucumber farm. The effect of plant natural resources (Azadirachta indica L and Sophora angustifolia) of juveniles and the hatching of eggs of Meloidogyne sp. were examined the laboratory. The nematicides (fosthiazate), actinomycetes protease and S. angustifolia extract resulted in 45.6, 46.6 and 51.23% mortality of J2 of M. incognita. The nematicides (fosthiazate), A. indica L and S. angustifolia extract resulted in 2.06, 3.96 and 6.22% hatch of egg of M. incognita. Antinematode activity test had done after the formulation of liquid (Nemastar) with mixture of additives and inerts into selected highly active natural material and actinomycetes protease. In pot and field experiments, the nemastar had good control efficacy against plant root-knot nematodes. Anti-nematode activity of strain BIG11003 from phylogentic analysis based on 16S rDNA sequences, it is suggested the Streptomyces koyangensis.
Ji-Ae Lim,Ho-Jang Kwon,Mina Ha,Ho Kim,Se Young Oh,Jeong Seon Kim,Sang-Ah Lee,Jung-Duck Park,Young-Seoub Hong,Seok-Joon Sohn,Heesoo Pyo,Kyung Su Park,Kwang-Geun Lee,Yong Dae Kim,Sangil Jun,Myung Sil Hw 환경독성보건학회 2015 환경독성보건학회지 Vol.30 No.-
Objectives: This survey was designed to conduct the first nationwide dietary exposure assessment on hazardous substances including the intakes of functional food and herbal medicine. In this paper, we introduced the survey design and the results of the dietary exposure status and internal exposure levels of lead (Pb), cadmium (Cd), and mercury (Hg). Methods: We selected 4867 subjects of all ages throughout Korea. We conducted a food survey, dietary survey, biomonitoring, and health survey. Results: Pb and Cd were the highest (median value) in the seaweed (94.2 μg/kg for Pb; 594 μg/kg for Cd), and Hg was the highest in the fish (46.4 μg/kg). The dietary exposure level (median value) of Pb was 0.14 μg/kg body weight (bw)/d, 0.18 μg/kg bw/d for Cd, and 0.07 μg/kg bw/d for Hg. Those with a blood Pb level of less than 5.00 μg/dL (US Centers for Disease Control and Prevention, reference value for those 1 to 5 years of age) were 99.0% of all the subjects. Those with a blood Cd level with less than 0.30 μg/L (German Federal Environmental Agency, reference value for non-smoking children) were 24.5%. For those with a blood Hg level with less than 5.00 μg/L (human biomonitoring I, references value for children and adults, German Federal Environmental Agency) was 81.0 % of all the subjects. Conclusions: The main dietary exposure of heavy metals occurs through food consumed in a large quantity and high frequency. The blood Hg level and dietary exposure level of Hg were both higher than those in the European Union.
Kim, Jaeyoung,Kwon, Jung Hoon,Jang, Jinyoung,Lee, Hyojin,Kim, Seungki,Hahn, Young Ki,Kim, Sang Kyung,Lee, Kwan Hyi,Lee, Seok,Pyo, Heesoo,Song, Chang-Seon,Lee, Joonseok Elsevier 2018 Biosensors & Bioelectronics Vol.112 No.-
<P><B>Abstract</B></P> <P>Rapid and sensitive on-site detection of avian influenza virus (AIV) is the key for achieving near real-time surveillance of AIV and reducing the risk of dissemination. However, unlike the laboratory-prepared transparent buffer solutions containing a single type of influenza virus, distinction between real- and false- positive outputs and detection of low concentrations of AIV in stool specimens or cloacal swabs are difficult. Here, we developed a rapid and background-free lateral flow immunoassay (LFA) platform that utilizes near-infrared (NIR)-to-NIR upconversion nanoparticles (UCNPs) to yield a sensor that detects AIV nucleoproteins (NPs) from clinical samples within 20 min. Ca<SUP>2+</SUP> as a heterogeneous dopant ion in the shell enhanced the NIR-to-NIR upconversion photoluminescence (PL) emission without inducing significant changes in the morphology of the UCNPs. In a mixture of opaque stool samples and gold nanoparticles (GNPs), which are components of commercial AIV LFA, the background signal of the stool samples masked the absorption peak of GNPs. However, UCNPs dispersed in the stool samples still show strong emission centered at 800 nm when excited at 980 nm, which enables the NIR-to-NIR upconversion nanoparticle-based lateral flow immunoassay (NNLFA) platform to detect 10-times lower viral load than a commercial GNP-based AIV LFA. The detection limit of NNLFA for LPAI H5N2 and HPAI H5N6 viruses was 10<SUP>2</SUP> and 10<SUP>3.5</SUP> EID<SUB>50</SUB>/mL, respectively. Moreover, the viruses were successfully detected within dark brown-colored samples using the NNLFA but not the commercial AIV LFA. Therefore, the rapid and background-free NNLFA platform can be used for sensitive on-site detection of AIV.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Ca<SUP>2+</SUP> as a heterogeneous dopant ion enhanced the NIR-to-NIR upconversion photoluminescence. </LI> <LI> The UCNPs dispersed in opaque stool samples still show strong NIR emission when excited at 980 nm. </LI> <LI> NNLFA showed high sensitivity for AIV detection from oropharyngeal and cloacal clinical samples. </LI> </UL> </P>
Lim, Ji-Ae,Kwon, Ho-Jang,Ha, Mina,Kim, Ho,Oh, Se Young,Kim, Jeong Seon,Lee, Sang-Ah,Park, Jung-Duck,Hong, Young-Seoub,Sohn, Seok-Joon,Pyo, Heesoo,Park, Kyung Su,Lee, Kwang-Geun,Kim, Yong Dae,Jun, Sang The Korean Society of Environmental Toxicology 2015 환경독성보건학회지 Vol.30 No.-
Objectives: This survey was designed to conduct the first nationwide dietary exposure assessment on hazardous substances including the intakes of functional food and herbal medicine. In this paper, we introduced the survey design and the results of the dietary exposure status and internal exposure levels of lead (Pb), cadmium (Cd), and mercury (Hg). Methods: We selected 4867 subjects of all ages throughout Korea. We conducted a food survey, dietary survey, biomonitoring, and health survey. Results: Pb and Cd were the highest (median value) in the seaweed ($94.2{\mu}g/kg$ for Pb; $594{\mu}g/kg$ for Cd), and Hg was the highest in the fish ($46.4{\mu}g/kg$). The dietary exposure level (median value) of Pb was $0.14{\mu}g/kg$ body weight (bw)/d, $0.18{\mu}g/kg$ bw/d for Cd, and $0.07{\mu}g/kg$ bw/d for Hg. Those with a blood Pb level of less than $5.00{\mu}g/dL$ (US Centers for Disease Control and Prevention, reference value for those 1 to 5 years of age) were 99.0% of all the subjects. Those with a blood Cd level with less than $0.30{\mu}g/L$ (German Federal Environmental Agency, reference value for non-smoking children) were 24.5%. For those with a blood Hg level with less than $5.00{\mu}g/L$ (human biomonitoring I, references value for children and adults, German Federal Environmental Agency) was 81.0 % of all the subjects. Conclusions: The main dietary exposure of heavy metals occurs through food consumed in a large quantity and high frequency. The blood Hg level and dietary exposure level of Hg were both higher than those in the European Union.
PET/CT 업무환경 내 방사성의약품 취급 시 Apron의 실효성 평가
허성용(Seongyong Heo),김윤환(Yunhwan Kim),김재현(Jaehyeon Kim),김희수(Heesoo Kim),류지영(Jiyeong Ryu),성민제(Minje Seong),장현지(Hyunji Jang),고성진(Seongjin Ko) 한국방사선학회 2015 한국방사선학회 학술대회 논문집 Vol.2015 No.추계
본 연구는 선량 측정 장비를 통한 실측과 몬테카를로 기법을 기반으로 한 모의실험을 통해 핵의학 분야의 PET/CT 업무환경 내 선원 취급 시 Apron의 실효성을 평가하고자 한다. 현재 의료기관에서 사용되는 공간선량계와 보조선량계를 이용한 실측을 통해 선원과의 거리별 Apron의 납 당량 (Non apron, 0.25, 0.5, 0.75, 1.2, 1.25 mm)에 따른 공간 선량률을 측정하였고, MCNPX 모의실험을 통해 동일한 기하학적 조건 내에서 선원과 인체 팬텀과의 거리별 Apron 납 두께 (Non apron, 0.25, 0.5, 0.75, 1.0, 1.25 mm)에 따라 팬텀 내 피부 및 생식선에 흡수된 선량 분포를 측정하여 상호간의 결과를 비교 분석하였다. 측정 장비를 통한 실측 결과, 납 당량이 증가할수록, 선원과 접촉하는 거리가 멀어질수록 공간 선량률이 지수함수 분포로 감소되는 경향을 나타냈다. 도한 모의실험 내 피부 및 생식선 선량 평가 결과, 생식선의 경우 피부보다 더 높은 선량을 나타냈으며, 거리별 납 두께에 따른 선량감소율은 실측에 비해 다소 낮은 결과를 나타냈다. Apron의 증가된 납 당량 사용과 동시에 적정 거리를 유지하여 업무를 수행한다면 종사자의 피폭 저감화에 도움을 줄 수 있을 것이라 판단되나, Apron 납 당량을 무한정으로 증가시키기에는 한계가 있다. 추후 연구를 통해 PET/CT 작업환경 내 핵의학 종사자의 피폭 저감화에 적절한 납 당량의 증가와 동시에 Apron 경량화에 대한 연구가 필요할 것으로 사료된다. This study is aimed at evaluating the effectiveness of an apron in handling the radiation source within the PET/CT work environment in the field of nuclear medicine through the actual measurement using does measuring equipment and a simulation based on Monte Carlo method. Space radiation dose rates according to the lead equivalent of an apron were actually measured with respect to the distance from the radiation source using a space radiation dosimeter and a supplementary dosimeter currently used in medical institutions, and through a MCNPX simulation, the dose distribution absorbed in the skin and genital glands of a human body phantom was measured by the distance between the radiation source and the phantom according to the thickness of lead in an apron. Subsequently, both sets of measurements were comparatively analyzed. In the actual measurement using the equipment, as the lead equivalent and the distance from the radiation source were both increasing, the space radiation dose was shown to decrease exponentially. Also, the evaluation of the dose in skin and genital glands in the simulation showed that the dose in the genital glands was higher than that in the skin, and the decreasing rate of the dose according to the thickness of lead by the distance was slightly lower than that in the actual measurement. If a higher equivalent of lead is used in an apron and at the same time an adequate distance is maintained while the radiation work is underway, it is considered that the exposure of radiation worker will be reduced. However, the lead equivalent cannot be increased without limit. Thus, it is considered that further study on the increase of the lead equivalent adequate for reducing the exposure of radiation workers in the PET/CT work environment as well as the weight lightening of the apron is necessary.