• Title/Summary/Keyword: Science and Media

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Development of the Water-borne Separation Media Polymer for a Moving Historic Sites (자기분산형 수용성 에폭시를 이용한 유구 이전용 박리제의 개발)

  • Han, Won-Sik;Hong, Tae-Kee;Lim, Sung-Jin;Wi, Koang-Chul
    • Journal of Conservation Science
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    • v.25 no.2
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    • pp.171-178
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    • 2009
  • When we considered the superior ability of the semi-water soluble urethane 1st transcription and final epoxy products, the stability for moving historic sites depend on physical properties and the peel off state of separation media. In this paper, we synthesised three type of water-borne epoxy solution without using a surfactant, and investigated the peel off state, physical properties, and the state between urethane surface and epoxy surface after exfoliation. The life time of water-borne separation media is over the 60 days. When it is used the 30% solution of water-borne separation media, it made good separation of urethane pre-products surface and epoxy final product surface and no color change. The separation tension pressure is about 15~50 kg/$cm^2$ and there is no surface whitewash phenomenon. We suggest that this water-borne epoxy will be best material as separation media of low viscosity type.

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Selection of Rearing Media, Proper Temperature and Period for Storage of Sterile Lucilia sericata (Diptera: Calliphoridae) Eggs and Larvae (무균 구리금파리 유충 생산용 배지의 선발과 알 및 유충의 저장을 위한 온도 및 기간)

  • Jang, Sin-Ae;Yun, Ji-Eun;Park, Chung-Gyoo
    • Korean journal of applied entomology
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    • v.48 no.2
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    • pp.269-274
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    • 2009
  • Rearing media were selected for the production of sterile larvae of greenbottle blowfly, Phaenicia (=Lucilia) sericata (Meigen) which is widely used in maggot therapy. Eight media available in the market were used in this study. Egg hatchability was not different among the media. Survivorship of the larvae was higher in blood agar (BA), sabouraud dextrose agar, and brucella blood agar than the others. A higher content (20${\sim}$40%) of sheep blood in BA and chocolate agar increased the survivorship of larvae. The eggs and the early 3rd larvae could be stored for 12 days at $8^{\circ}C$ and for 15 days at $6^{\circ}C$ without decrease in hatchability and larval survivorship, respectively.

Learning with Information in Digital Age: School Library Media Programs as Learning Commons (디지털 시대의 학습과 정보 - 학습 코먼스로서 학교도서관 -)

  • Chung, Jin Soo
    • Journal of the Korean Society for Library and Information Science
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    • v.50 no.1
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    • pp.353-375
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    • 2016
  • Although people seriously worry that "digital paradox" is a "quiet crisis" to our society as a whole and threatens our future generation, we need to reconsider how we utilize digital media for effective learning as we understand its characteristics and compare the differences among all formats of media that used for learning. The purpose of this study is to suggest and analyze school library media programs as Learning Commons by applying the relevant theories on information, learning, learning with media, and meaningful learning. The study assumes the importance of the school library media programs that manage rich Information in various formats in an educational system. The study provides theoretical grounds and insights to practitioners and researchers in the relevant field as they face the challenges in putting an emphasis of today's school library media programs for student learning in digital age.

The Effect of Consumption Expression Behavior through Social Media on Sustainable Consumption: Mediating Effects of Social Connectedness (소셜미디어를 통한 소비 표현 행동이 지속가능소비에 미치는 영향: 사회적 연결감의 매개효과)

  • Yu Hyeon Park;Hyesun Hwang
    • Human Ecology Research
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    • v.61 no.2
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    • pp.247-261
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    • 2023
  • The purpose of this study was to examine the effect of consumer consumption behavior on sustainable consumption through social media and to verify the mediating effects of social connectedness on sustainable consumption. A survey comprising 222 men and women in their 20s and 30s was conducted in which their consumption expression behavior, sustainable consumption and social connectedness were measured. The results were analyzed using SPSS Process Macro Model 4 and it was found that consumers who shared a considerable amount of personal information on their lifestyle on social media as a means of self-expression exhibited a higher level of sustainable consumption. It also became apparent that the degree of consumption expression behavior had a positive effect on social connectedness and that social connectedness had a positive impact on sustainable consumption by mediating the degree of consumption-focused self-expression on social media. Based on these results, it was confirmed that social media can serve as a mechanism to lead consumers' consumption behavior beyond providing a basis for forming a human network. Implications for the impact of social media on consumption behavior were presented, and proposals for exploring the environment in which sustainable consumption can be activated were suggested, together with ways in which new media can be utilized. The findings from this study indicate that sharing consumption behavior and having a broad range of connections on social media can create an environment in which sustainable consumption is promoted.

Acceptance of Social Media as a Marketing Tool : A Quantitative Study

  • Hooda, Apeksha;Ankur, Ankur
    • Asian Journal of Business Environment
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    • v.8 no.3
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    • pp.5-12
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    • 2018
  • Purpose - The purpose of current paper is to identify features of advertisements at social media that generate the ad-click and to further identify if these advertisements lead to purchase. If no purchase is made, then reasons for not making purchase are identified. Users' purchase experience after users clicked at advertisements are also studied. Research design, data, and methodology - Research design followed is exploratory research, where various factors leading to ad-clicks and generating purchase at social media platform were explored. Raw data was gathered by means of survey among a sample of 185 respondents in India using online structured questionnaire. GLM model and multinomial regression were used to analyze the data. Results - Several factors including endorsement by friends, advertisement aesthetics, product reviews, and aggressive pricing played major role in generating ad-clicks. Major impediment to purchase on were product misrepresentation in advertisement, false discounts, and site security. Female users clicked more on social media advertisements and made more purchases compared to their male counterpart. Conclusions - Social media advertisements have significant positive effect on buying behavior of online customers. Transactions culminating from social media ad-click generated significant positive experience for social media users. Thus, social media can be effective marketing tool.

Automatic Generation of Video Metadata for the Super-personalized Recommendation of Media

  • Yong, Sung Jung;Park, Hyo Gyeong;You, Yeon Hwi;Moon, Il-Young
    • Journal of information and communication convergence engineering
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    • v.20 no.4
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    • pp.288-294
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    • 2022
  • The media content market has been growing, as various types of content are being mass-produced owing to the recent proliferation of the Internet and digital media. In addition, platforms that provide personalized services for content consumption are emerging and competing with each other to recommend personalized content. Existing platforms use a method in which a user directly inputs video metadata. Consequently, significant amounts of time and cost are consumed in processing large amounts of data. In this study, keyframes and audio spectra based on the YCbCr color model of a movie trailer were extracted for the automatic generation of metadata. The extracted audio spectra and image keyframes were used as learning data for genre recognition in deep learning. Deep learning was implemented to determine genres among the video metadata, and suggestions for utilization were proposed. A system that can automatically generate metadata established through the results of this study will be helpful for studying recommendation systems for media super-personalization.

A Study of Sewage Treatment with a Self-Cleaning Filtration Unit (자기세정 여과 반응장치를 이용한 하수처리에 관한 연구)

  • Mo, Sung-Young;Lee, Pul-Eip;Kim, Bum-Su;Lee, Tae-Jin
    • Journal of Korean Society of Environmental Engineers
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    • v.38 no.6
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    • pp.309-316
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    • 2016
  • In this study, sewage was fed with up flow direction into a reactor equipped with a screw to circulate media that had lower specific gravity than water. It was observed that the media in the reactor could be circulated by a screw with reverse flow of the sewage feeding from the top to the bottom direction. Under these conditions, concentrations of inflow and outflow pollutants were measured at the filtration unit. Experimental results revealed stable circulation of the media with a screw in the reactor. Circulation of the media in the reactor showed more efficiency in removing the pollutants (particulate matters and organics) than no circulation. The maximum removal efficiencies of suspended solid (SS), chemical oxygen demand (CODmn), and total phosphorus (T-P) were 96%, 72% and 65%, respectively. Improvements for SS, CODmn and T-P removals with circulation of media were 52.38%, 43.14% and 118.12% respectively, compared to those without circulation.

Addressing User Engagement in Social Media Platforms with Cultural Differences Based on Hofstede's Dimensions

  • Yoon Han;Hoang D. Nguyen;Tae Hun Kim
    • Asia pacific journal of information systems
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    • v.34 no.1
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    • pp.191-208
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    • 2024
  • This paper proposes the presence and importance of cultural differences to address user engagement in worldwide social media platforms. Based on Hofstede's cultural dimensions, this paper addresses their new meanings in the context of user engagement in social media. Our propositions address two research questions: (1) how do cultural dimensions, displayed on social media platforms, differ across national cultures?; (2) what different preferences the social media platforms have in terms of which cultural dimensions promote or suppress user engagement? User engagement in social media platforms is explained by the cultural differences in terms of the four cultural dimensions: individualism vs. collectivism, uncertainty avoidance, power distance, and masculinity vs. femininity. Implications are also discussed for research and practice.

A Study on Quality Improvement in Internet Media Portal Company Applying 6 Sigma Methodology (6시그마를 적용한 인터넷 미디어 포털 기업의 품질개선에 관한 연구)

  • Sung, Ki-Wook;Kim, Bong-Sun
    • Journal of the Korea Safety Management & Science
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    • v.10 no.4
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    • pp.219-227
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    • 2008
  • Since six sigma program was first introduced in late 1990's, it has been evolved in Korea. The number of six sigma adopting company are getting increased and diversify manufacturing, service, government. In these days, the rapid innovation of internet technology change the media industry's game rule. This paper is concerned with a six sigma applications to internet media portal service company. The main focus of this study is to introduce an empirical study on the implementation of DMAIC procedures for internet media portal service company.