• Journal of Digital Convergence
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• v.10 no.4
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• pp.147-157
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• 2012

In this study, User intention also factors that Consulting application and Subjective norm, Task media fit factors also impact on User intention was examined. In this process, especially Subjective norm and Task media fit of SNS in each dimension to User intention about the impact of Consulting application was in each carried out to examine the mediating effect. The test result used in this study the Subjective norm, Task media fit and Consulting application in a significant positive(+) User intention also was effective. And verifying the results of the mediating effect of Consulting application, Subjective norm and Task media fit has proven to be effective in all parameters. The results of such individuals or companies with Consulting application of SNS. SNS Subjective norm and Task media fit are aware of the factors influencing the Strategy envisions an appropriate response, such as to provide Suggestions.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.31 no.3B
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• pp.183-198
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• 2006

We define the incomplete medium sharing system as a multi-channel shared medium communication system where constraints are imposed to the set of channels that may be allocated to some transmitter-receiver node pairs. To derive a centralized MAC scheme of a incomplete medium sharing system, we address the problem of optimal channel allocation The optimal channel allocation problem is then translated into a max-flow problem in a multi-commodity flow graph, and it is shown that the optimal solution can then be obtained by solving a linear programming problem. In addition, two suboptimal channel allocation schemes are proposed to bring down the computational complexity to a practical/feasible level; (1) one is a modified iSLIP channel allocation scheme, (2) the other is sequential channel allocation scheme. From the results of a extensive set of numerical experiments, it is found that the suboptimal schemes evaluate channel utilization close to that of the optimal schemes while requiring much less amount of computation than the optimal scheme. In particular, the sequential channel allocation scheme is shown to achieve higher channel utilization with less computational complexity than . the modified iSLIP channel allocation scheme.

• Korean journal of communication and information
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• v.21
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• pp.7-34
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• 2003

The present study was designed to study the media consonance of campaign news coverage by comparing the issue salience provided by each medium. To explore the issue of consonance, this study examined the relationship of campaign agenda at intermedia and intramedia level. The data analysis revealed that there was general consensus in setting the campaign agenda at the intramedia and the intermedia level. On the other hand, the research focus indicated there was media difference in reporting the campaign agenda over time. In the perspective of agenda-setting function, the exposure to news media with greater uniformity might result in greater agenda-setting effects, since the media makes the issues salient by giving more media attention. After all, the uniformity of issue salience among news media might influence "what issues to think about," resulting in limiting the range of democratic discussion.

• Journal of Convergence for Information Technology
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• v.9 no.11
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• pp.171-179
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• 2019

This study aims to examine whether a Parent's Neglecting Attitude affects an Adult Media Immersion and Adolescent' Dependence on mobile phonehas a mediating effect. To achieve this goal, the first year of middle school panel of 'the 6th Korean Children and Youth Panel Survey(KCYPS)' was utilized. To verify the mediating effect of Adolescent' Dependence on mobile phone in the relationship between Parent's Neglecting Attitude by Adolescents and the Adult Media Immersion, Baron & Kenny's mediating effect analysis method was conducted and the analytical findings are shown below. According to this study, first of all, more the Parent's Neglecting Attitude rise to rise the Adult Media Immersion. Second, the Adolescent's Dependence on mobile phone partly mediates the Adult Media Immersion. The practical implications of this results are below : First, we need to make a policy and legal effort to improve the relationship between parents and children. Second, there is a need to practice professional programs in schools, focusing on school social worker. Third, Revision of relevant laws limiting access to adult media is necessary.

• Journal of Korean Library and Information Science Society
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• v.54 no.1
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• pp.221-240
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• 2023

This study proposes a medium-specific reading instruction method for digital natives exposed to various reading media with the development of information and communication technology. For this purpose, an elementary school located in H-si, Gyeonggi-do was selected and the readability and literacy tests according to the media were conducted for 6th graders. In the experiment, the same article contents were divided into three groups, and the time required to read and read using different media was measured, and the literacy according to the media was confirmed through quizzes. As a result of the measurement, the average reading time of the web-page was 3 minutes 28 seconds, the quiz correct answer rate (average) 3.99 questions, the average reading time of the pdf file in the form of an e-book was 5 minutes 23 seconds, the correct answer rate (average) 4.35 questions, the average reading time of the printed text was 7 minutes 14 seconds, and the correct answer rate (average) 6.26 questions. The number of students who participated in the experiment is 144, and there is a limit to generalizing the reading method according to the media type only with the results of the researcher's experiment.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2020.11a
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• pp.210-211
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• 2020

COVID-19으로 인해 국민들에게 전달되는 재난정보의 양상이 서서히 변화하고 있다. 이는 정보통신의 발전 양상과도 매우 깊은 관계를 가지고 있다고 볼 수 있다. 이전까지의 정부 및 지자체에서 제공되는 재난정보에 대한 형태는 문자와 음성으로만 제공하므로써 고령자와 외국인과 같은 재난 약자에게 명확한 상황인지를 하기에 어려움이 있었다. 이를 해결하기 위한 전방위적인 노력을 하고 있으며, 보다 정확하고 보다 다양한 정보를 제공하고자 관련 연구를 수행하고 있다. 이는 급속도로 발전하는 정보통신 매체(UHD 및 5G, 오픈스크린 등)를 기반으로 국민들로 하여금 신속.정확한 재난상황인지를 가능케 할 수 있다. 이로 인한 재난경보 관련 최근 이슈는 '내 위치 맞춤형 정보'와 '다매체 정보'가 아닐까 싶다. 정보통신 매체가 발달함에 따라 제공되는 재난경보의 범위가 내 위치를 기준으로 좁아지며, 시각적으로 직관적인 콘텐츠를 제공할 수 있다. 이는 각 매체의 고유 정보를 통해 위치가 확인 가능하면서 해당 지역에 맞는 정보만 선택적으로 취함으로써 불필요한 정보를 제공하지 않게 된다. 본 연구를 통해 이러한 부분을 해결하기 위해 TTA에서 표준으로 제정된 CAP (Common Alerting Protocol)을 활용하였으며, 'Area' 항목에 지역코드(전국~읍면동)를 함께 포함함으로써 가능해졌다. 또한 CAP을 활용함에 따라 텍스트부터 음성, 이미지, 웹 콘텐츠까지 최신의 영상 매체에 적용 가능한 재난정보 콘텐츠를 제공 가능해졌으며, 특히 UHD 및 5G, 오픈스크린과 같은 통신 네트워크 기반 영상 매체에 적합한 멀티미디어 재난정보 콘텐츠를 제공할 수 있다. 제공된 콘텐츠에는 각종 관련 정보를 확인 가능하도록 링크를 제공하여 필요에 따라 보다 자세한 재난정보를 확인할 수 있다. 이를 기반으로 재난경보에 대한 다변화를 통해 나에게 꼭 필요한 정보가 제공될 수 있도록 발령 체계 개편이 필요하다.

• Korean Chemical Engineering Research
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• v.56 no.4
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• pp.479-495
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• 2018

This study was carried out to research the multimedia fate modeling, concentration distribution and impact assessment of polycyclic aromatic hydrocarbons (PAHs) emitted from automobiles, which are known as carcinogenic and mutation chemicals. The amount of emissions of PAHs was determined based on the census data of automobiles at a target S-city and emission factors of PAHs, where multimedia fugacity modeling was conducted by the restriction of PAHs transfer between air-soil at the impervious area. PAHs' Concentrations and their distributions at several environmental media were predicted by multimedia fugacity model (level III). The residual amounts and the distributions of PAHs through mass transfer of PAHs between environment media were used to assess the health risk of PAHs at unsteady state (level IV), where the sensitivity analyses of the model parameter of each variable were conducted based on Monte Carlo simulation. The experimental result at S-city showed that Fluoranthene among PAHs substances are the highest residual concentrations (60%, 53%, 32% and 34%) at all mediums (atmospheric, water, soil, sediment), respectively, where most of the PAHs were highly accumulated in the sediment media (more than 80%). A result of PAHs concentration changes in S-city over the past 34 years identified that PAHs emissions from all environmental media increased from 1983 to 2005 and decreased until 2016, where the emission of heavy-duty vehicle including truck revealed the largest contribution to the automotive emissions of PAHs at all environment media. The PAHs concentrations in soil and water for the last 34 years showed the less value than the legal standards of PAHs, but the PAHs in air exceeded the air quality standards from 1996 to 2016. The result of this study is expected to contribute the effective management and monitoring of toxic chemicals of PAHs at various environment media of Metropolitan city.

• Korean journal of communication and information
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• v.46
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• pp.511-555
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• 2009

Media-related regulations can be classified into two categories; regulations of individual media contents and regulations regarding the entry to and withdrawal from a certain field. In this dissertation, ownership regulations are regarded as legal and political measures so as to prevent the monopoly and oligopoly of public opinion, and to secure its diversity. Every country has its own regulation model according to its particular media environment. Korea too is obliged to actively respond to its environmental changes, at the same time vitalizing the media industry and protecting consumers' rights and interests. Strong political intentions to protect the public interest is necessary when it comes to media regulation policies, especially in the circumstances that public interest is an industrial priority. As the convergence of broadcasting and telecommunications is leading to a major shift in the media industry, the regulation of cross-media ownership is an issue involving potential conflicts among media-owners, non-governmental organizations and the authorities concerned, depending on their various viewpoints regarding the media industry. In this paper, an attempt was made to search necessity of redefining 'public interest', which is the logic behind the restriction of cross-media ownership, and to reconceptualize issues on the centralization and diversity of media. First, an examination of the actual conditions of newspaper companies was carried out in order to reinvestigate domestic cross-media ownership issues, which is represented by the cross-ownership issue of newspapers and broadcasting stations. Next, the dilemma of policies stimulated by the fusion of media was discussed based on cross-media ownership restrictions, and the need for efficient conflict control was suggested. Finally, proposals on the independency and public confidence of media-related policy-making authorities, the rationalization of regulation models, an itemized discussion on cross-media ownership regulation issues, the elaboration of measures for a balanced development among media were made. It could be found that a number of foreign countries were still facing challenges to prevent monopoly and oligopoly of the public opinion and the industry. A solution to settle disagreements about the dilemma of the media industry, including the cross-media ownership regulation issues, must be arranged on the grounds of 'mutual respect of public interest and industrial interest', In Korea, an ease on the ownership regulations adapting to the change in the media industry may be considered, however the softening of the cross-media ownership regulations must be approached with the utmost care. Paradoxically Relieving cross-media ownership regulations may be considered the foundation of a richer field of journalism, where there is no need for concern over the monopoly and oligopoly of public opinion.

• Journal of the Korean Society for information Management
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• v.33 no.1
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• pp.33-52
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• 2016

This study was to find the display considerations of RDA resource type - content type, media type, and carrier type. The Literature review, the case study, and the survey were used as the research method. 5 display strategies were suggested in this study. First, content and carrier types were better displayed than all 3 types of RDA resources. Second, two kinds of algorithm should be considered for RDA resource icon display. One was the combination of the terms of carrier types plus content types icon. The other was the combination of carrier types icon and content types icon in which the terms reflecting types must be included. Third, the subfield of 33x must be used for the paired display of content type and carrier type of multi-types resources. Fourth, in brief display, resource type icon was better positioned on the left and upper side and in detailed display, resource types were better located in description area. Fifth, 'format' was used as display indication phrase. This study would contribute to the design for the resource display by suggesting the practical display considerations of RDA resource type.

• Journal of the Mineralogical Society of Korea
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• v.32 no.4
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• pp.249-258
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• 2019

Acid spill accidents are frequently occurring in Korea with increasing production, use, storage, and transport of acids, accompanying industrialization and economic growth. The acids introduced to the subsurface environments would eventually be neutralized by reactions with geomedia. However, the spatial and temporal extent to which the spilled acids would affect will be dependent on the characteristics of the geomedia exposed to the acids. In this work, sulfuric acid, the most used acid in Korea, was reacted with a set of model geomedia representative of the geology of Korea. The buffering capacity of the model geomedia was determined through batch-type experiments using pH changes as an indicator. X-ray diffraction was used to identify the mineral phases contributing to the acid neutralization. The results showed that sandstone had the largest acid neutralization capacity among the tested geomedia, while kaolinite had the smallest. The findings of this study would contribute to quantitatively assessing the impact of spilled acids on geomedia and hence to predicting the vulnerability of geomedia to the spilled acid.