• The Journal of the Korea institute of electronic communication sciences
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• v.16 no.2
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• pp.233-240
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• 2021

For the production of neodymium-doped zinc sulfide thin films in various amounts, zinc sulfide and neodymium were simultaneously deposited using an RF magnetron sputtering equipment to form a thin films, and rapid thermal annealing was performed at 400℃ for 30 minutes as a post-treatment process. The structure, shape, and optical properties of ZnS thin films having various neodymium doping contents (0.35at.%, 1.31at.%, 1.82at.% and 1.90at.%) were studied. The X-ray diffraction pattern was grown to a (111) cubic structure in all thin films. The surface and structural morphology of the thin films due to the neodymium doping content was explained through SEM and AFM images. Only elements of Zn, S, and Nd that do not contain other impurities were identified through EDAX. The transmittance and band gap of the prepared thin films were confirmed using the UV-vis spectrum.

• Journal of Digital Convergence
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• v.17 no.11
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• pp.523-530
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• 2019

This study examines how global fandom for Korean dramas is formed and maintained by examining the reason and purpose of voluntarily making the subtitles of Korean drama through in-depth email interviews with foreign subtitle producers(fan subber) working on a video site called Viki.com. The research focused on Viki's fan community, which has grown into the most influential Korean Wave platform. Collective intelligence expresses in the fan community produces more than professional results and they are acting as consumers, cultural producers, and second creators of K-content. In order to continue the spread of K-content, it needs to pay more attention to the long-term strategy of global fandom combined with the fan community activities of the new media platform and network effects.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.22 no.5
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• pp.1115-1122
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• 2012

VoIP service is steadily growing due to the spread of smartphones, enhanced network, and various VoIP applications. But, VoIP has many security vulnerabilities because it is based on IP network. This paper analyzes the important weight of VoIP security checklists for incident prevention and response using AHP. The results of AHP analysis showed that network security, incident response, and access control were the most important in technical, administrative, physical standpoint. This study proposes factor analysis of VoIP security checklist at first time. By doing this, it will be used helpfully when VoIP service providers establish their own security policies and inspect their VoIP environment according to their security policies.

• The Journal of the Korea Contents Association
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• v.21 no.1
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• pp.626-638
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• 2021

This study is about a life history. Through investigating the life of retired teachers in preschool, elementary, and middle schools, authors wanted to explore the meaning of retirement and the process of adaptation to find out their personal and social needs in post-retirement life. Studies have shown that their experiences at childhood have greatly influenced the performance of one's profession, such as contributing to setting limits on behaviors of their students. In the period of interdependence, they have contributed to serving society and the nation beyond as a professional, and in the second half of his teaching career, they have learned that their painful experience was a resource and have realized that changing mind can make the world changed. Since teachers' behavior affects on many subjects unlike other jobs, rewards or satisfaction from the job was bigger than any other jobs. However, after retirement, they felt a sense of emptiness in life without any sense of belonging or accomplishment, while feeling happiness and infinite freedom in other hand. Thy still go forward for life challenging to new study.

• The Journal of the Convergence on Culture Technology
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• v.8 no.1
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• pp.299-306
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• 2022

Today, the paradigm of lifelong education has changed, emphasizing the role of universities as a lifelong educational institution. Re-opening a new horizon as a lifelong education institution that is not only centered on leisure education in the hierarchy where lifelong education can be afforded as before, or simply in line with changes in the social environment and the lengthened life cycle of the aging era. Let's propose a structured figure. Universities now have to create a virtuous circle structure that coexists not only with the role of the university itself, but with constant interaction with the local community. Adult learners, in particular, play a strong role in the development of their communities, so they are educated at the university to grow further and create structures that can return talent to the communities that go out into society. I should go. In the future, the university will actively open its doors to adult learners, position the university at the center of lifelong education, and in order to contribute to the development of the community, it will have to interact and cooperate with the community.

• Journal of Mushroom
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• v.19 no.4
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• pp.272-278
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• 2021

Bacillus velezensis HKB-1 was isolated from the composted spent mushroom substrate of Lentinula edodes (LeCSMS) and inhibited mycelial growth of phytopathogenic fungal species, Phythhopthora capsici, Collectotrichum coccodes and Fusarium oxysporium by more than 70%. B. velezensis HKB-1 showed bacterial growth rate 10 to 100 times higher than that of other commercial bacterial media in water extract of LeCSMS supplemented with 1% molasses. The LeCSMS medium was effective in promoting the growth of pepper and controlling Phytophthora blight disease of pepper.

• The Journal of the Korea institute of electronic communication sciences
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• v.17 no.5
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• pp.815-824
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• 2022

The growing integration of intermittent renewable sources like offshore wind energy increases the need for transferring electric energy over long distances, which may include sea crossings. One of the solutions available for bulk electric power transmission across large distances encompassing wide and deep sea is using HVDC submarine power cables. However, there are no standards or research related to the calculation of the continuous allowable current with various ocean conditions of a DC power cable that does not have an alternating magnetic field. In this study, assuming the typical two types of subsea cable models and two areas of the south coast and the west coast marine conditions, a continuous allowable current simulation of DC cables was performed. As a simulation result, the DC cable continuous allowable current find out the gradient reduction characteristics based on subsea base depth.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.28 no.3
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• pp.217-221
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• 2022

Container system automatically controlled in its atmosphere of high CO₂/low O₂ was devised to contain and store pork belly meat at chilled temperature. The meat in the container system was compared in the quality preservation at 0℃ for 21 days to that in air-filled container and vacuum package. The container atmosphere could be controlled to be of 47~60% CO₂ and 7~10% O₂ through time-controlled intermittent CO₂ injection. The controlled atmosphere in the developed system was effective in suppressing pH change and aerobic bacterial growth contributing to sensory quality preservation. Compared to control of air-filled container, vacuum packaging showed lower microbial growth and slower pH change on the meat but with high drip loss. The devised container system to keep high CO₂ and mildly low O₂ concentrations is effective in the meat quality preservation on overall, and may be extended to a variety of meat products with possible modification tuned for product requirements.

• Korean Journal of Forensic Psychology
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• v.12 no.3
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• pp.323-341
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• 2021

This study examined public perceptions of the reasons underlying sentence reduction for defendants convicted of sex crimes against persons with intellectual disability. An online survey was conducted among 522 adults in South Korea. Respondent endorsement of 20 reasons underlying sentence reduction, which were embedded within the respective rulings, and the perceived appropriateness of statutory sentence for the crimes committed were assessed. The results showed that most respondents endorsed the sentence; moreover, those who disagreed underscored the need for more severe punishment. Almost all the respondents perceived the following reasons and explanations unfavorably: impulsiveness caused by sexual arousal or alcohol consumption; an accidental occurrence; and personal characteristics such as defendant age, health condition, socioeconomic status, developmental history, and family background. However, there was a relative agreement in that the damage caused by the incident was relatively minor, or the defendant's reflection and attitude to recover the damage were used as reasons for the reduction. Differences in respondent perceptions of the reasons underlying sentence reduction as a function of gender and educational background were relatively small. However, younger respondents held harsher attitudes toward sentence reduction. The present findings underscore the need to be mindful of victims' statements and the characteristics of persons with intellectual disability while sentencing.

• Economic Analysis
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• v.27 no.1
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• pp.37-66
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• 2021

This paper examines the potential impacts of COVID-19 on poverty in ASEAN countries. The first estimate, adopted from Summer et al. (2020) and Nonvide (2020), configures three scenarios of contractions in per capita household income or consumption; the impact of each scenario on poverty is calculated using poverty lines at different thresholds. In the second estimate, poverty impacts in 2020 and 2021 were projected using regression models controlling for unobserved country effects, unbalanced data, and endogeneity. COVID-19 has been shown to have negative impacts on poverty reduction in the ASEAN Member States. To reduce poverty, concerted efforts are needed to implement policies for reducing income inequality and promoting economic growth. Such efforts will not only speed up the countries' return to pre-pandemic poverty levels but also contribute to further accelerating poverty reduction.