• Journal of the Korean Society of Safety
• /
• v.19 no.3 s.67
• /
• pp.57-64
• /
• 2004

This is the study for the removal of a toxic heavy metal ions and the recycling of expanded polystyrene wastes. Thus expanded polystyrene wastes collected from the packing materials of TV or chemicals and dissolved by $80wt.\%$ solvent(N, N-Dimethylacrylamide), electrospun in DC 20kV by power supply. Generally, the electrospinning is a process of manufacture to the fibers of nanosize from polymer solution. Manufactured nanofiber mats by electrospinning were sulfonated by cone.-sulphuric acid with $Ag_2S_O_4$ catalysts for the exchange capacity of heavy metal ions and the properties of structure with sulfonated time investigated by FESEM(Feild Emission Scaning Electron Microscope). The ion exchange capacity of light metal$(Na^+)$, Cd(II) and Ni(II), and by a nanofiber mats were 1.94[mmo1/g-dry-mat), 1.72(mmol/g-dry-mat), 1.24(mmol/g-dry-mat), respectively., and water uptake content showed a similar trend with IEC. and The selectivity coefficients $K^M_H$ of Cd(II), Ni((II) ions showed 0.324, 0.228. respectively.

• ETRI Journal
• /
• v.35 no.4
• /
• pp.655-665
• /
• 2013

Hybrid digital multimedia broadcasting (DMB) is a next-generation mobile TV system that combines broadcasting and wireless communication networks and can provide various high-quality multimedia services. However, if a system adheres to the current standard of transmitting the DMB content in the form of MPEG2-TS through wireless networks, it results in a burden on the network due to low transmission efficiency. The reasons for the low transmission efficiency are as follows. First, due to its constant bitrate characteristic, DMB MPEG2-TS includes a considerable amount of needless information, such as NULL packets and stuffing bytes. Second, due to the inflexibility of the Real-time Transport Protocol (RTP) standard, one cannot fully utilize the maximum transmission unit of the network when converting MPEG2-TS to RTP stream for transmission. This paper proposes a new transmission scheme that resolves these problems. Experiment results show that the proposed scheme improves data bitrate transmission efficiency by 8% to 36%, compared to the standard scheme, in the streaming of various real-DMB contents.

• Journal of the Korea Safety Management & Science
• /
• v.16 no.2
• /
• pp.101-109
• /
• 2014

This study is about safety education experience and practice of parents who are raising preschool children and the study results are as the following. For safety education experience state, parents had experience of safety education and mostly received it through communities, TV, Internet, etc. The most common educational content was the traffic safety education. For safety education practice degree according to number of children, safety education practice was mostly done well with 1~2 children. For safety education practice degree according to family type, safety education practice degree within the family was done most in nuclear families while healthy life habit safety education practice degree was done most in nuclear families and reconstituted families. Also, for traffic safety education practice degree, it was done well in nuclear families. For respiratory disease safety education practice degree, nuclear families and reconstituted families were the highest and for first aid safety education practice degree, single-parent families were the highest. For safety knowledge level of parents, safety knowledge of family was the highest, followed by safety knowledge of respiratory disease, and traffic. For safety education practice degree and safety knowledge according to safety education experience of parents, there was a significant difference in practice degree according to safety education experience of parents and there was also difference in practice knowledge according to experience. There was also education effect in healthy life habit safety knowledge and traffic safety knowledge.

• Journal of Broadcast Engineering
• /
• v.6 no.3
• /
• pp.215-224
• /
• 2001

In recent days, research activities on multimedia services mainly focus on the multiplexing system with timing synchromization for media components, such as video, audio and text. The MPEG-4 standard emphasizes object-based coding which includes analysis and understanding of the Image content. Since in MPEG-4 we can define objects and encode them independently, we can manipulate and display each object for different applications. This feature of MPEG-4 is also vero useful for multimedia services, such as video streaming cia different network channels, digital versatile disc, internet TV, video E-mail, and so on. In this Paper, we implement a multimedia streaming system which is compliant with the MPEG-4 system and the MP4 file format.

• International Journal of Computer Science & Network Security
• /
• v.21 no.12
• /
• pp.189-192
• /
• 2021

The article theoretically substantiated, developed and practically implemented a structural and functional model of the formation of ICT competence, taking into account interdisciplinary integration, defines the pedagogical conditions that contribute to the formation of ICT competence: interdisciplinary integration as a basis for building an interdisciplinary course, the content of which is aimed at the formation of ICT competence; the use of IEE, including information, didactic, technological components as a basis for the formation of ICT competence; integration of formal, non-formal and informal education for the implementation the integrity of the acquired knowledge, skills, experience as the basis for the formation of the ICT competence of teachers; creation and use of a set of tasks (educational (UZ), educational and methodological (UMP), educational and professional (UPZ)) as special tools for the formation of ICT competence.

• International Journal of Computer Science & Network Security
• /
• v.22 no.2
• /
• pp.57-62
• /
• 2022

The attractiveness of e-sports games¹ and the way it is spread has changed in recent years. Instead of conventional approaches, such as advertising campaigns or televised events, spectators are increasingly drawn to online platforms, which offer more opportunities for communication. Besides live streaming services like Twitch. tv, where spectators can watch matches in real-time or via recorded videos, social media platforms like Facebook and Twitter are now adding e-sports related content to their networks [1]. Especially the combination of live streams on Twitch, Twitter, and Facebook opens many possibilities regarding how information is shared. This might be an efficient way of spreading attractiveness among female audiences. This paper focuses on the attractiveness of e-sports events in general for females. It has been hypothesized that there are certain factors that influence this attractiveness. Studying past research papers and online resources, three factors were identified: The players' behavior and charisma, the impact of social media as well as videogames themselves. It is found that females are attracted to e-sport games because they allow them to engage more in the game compared to other videogames. This is because there are no time constraints that require players to accomplish certain tasks within a specific time frame. As such, female gamers can choose how much effort they want to put into the game depending on their personal preferences.

• Journal of Korea Multimedia Society
• /
• v.25 no.1
• /
• pp.92-102
• /
• 2022

This study suggests a variety of ways to prevent narcotic crimes, recurrence of such crimes, rehabilitation, and improve the public awareness of using the narcotics by adopting cultural contents, highlighting how dangerous, harmful and they are easily accessible, as well as the reality in Korea nowadays, where it cannot any longer be seen as a drug-free state. Precedent research, the actual case studies, and interviews followed by the "Musical Mission" explain that anyone can easily become a criminal or family to the criminals, and the adolescent is the age group that experience the most rapid increase in initiating such illicit drugs by using cultural content to help prevent and improve awareness among the public to expose the deadly effect of the substances. More efforts are required to remove the frame of criminals off the active drug users, as they are those who only need to be cared and are the same members of our society after all by demonstrating new ways to change such perspectives. I wish that it will become a social mandatory for those who produce the social contents to urge more support for the drug users through TV advertisements, dramas, movies, documentaries, and musicals etc.

• Journal of Korea Society of Digital Industry and Information Management
• /
• v.19 no.3
• /
• pp.1-11
• /
• 2023

Unlike in the past, when the demand for web content was increasing and the use behavior of watching short videos was changed, unlike the past when only TV dramas and differentiation were mentioned, web dramas are more firmly established through various attempts. A typical form change is commerce of web dramas. Recently, more and more cases have been produced in the form of product sales by securing real-time functioned, which are disadvantages of commerce, through web dramas. In this trend, web dramas are also increasing interest in product sales. This can be said to be a form developed from the concept of a company's PPL, and the number of companies that use web dramas that predict continuous growth as strategic product promotion and marketing means is continuously increasing. Therefore, this study provides basic data on consumer behavior to collect product information and purchase products using web dramas to companies that are using or considering web dramas, and through this, companies design and establish marketing strategies using web dramas.

• Educational Technology International
• /
• v.17 no.2
• /
• pp.273-305
• /
• 2016

The EBS teaching coaching program, '선생님이 달라졌어요' broadcasted about 30 dramatic teaching improvement cases. The TV program has gained great attention and been used widely as a good example for making some meaningful improvements in teaching. However, there has not been an attempt to research and gather the series beyond the individual coaching examples for the viewers (mainly teachers) to obtain more comprehensive educational insights of the results. This study, therefore, reviews the program and conveys how the overall coaching actually took place, examines changes in classrooms, and discusses the implications the results with theoretical foundations. The researcher selected 12 teachers' coaching cases among 30 ones. Then the reviewers reviewed the program with the 6 categories. According to the results, the coaching took place 6-8 months for each individual teacher. The common difficulty teachers shared was a big gap between teachers' effort for teaching versus 'students problematic behaviors' in class. The overall direction for the coaching solution was 'to improve the relationship with students' first rather than to mainly focus on teaching the content. Students changed and actively participated in the learning process when teachers improved their relationships with the students. The researcher discussed how building good relationships with students greatly affects the improvement in teaching with the 'Needs Hierarchy' and 'Brain Science' theories.

• Journal of the Korean Society of Food Culture
• /
• v.38 no.6
• /
• pp.373-380
• /
• 2023

In this study, 294 housewives in Siheung, Gyeonggi-do, were surveyed to evaluate the differences in the recognition and use of nutrition labeling according to age and to present data for nutrition education. The younger the age, the more aware the consumer was of the information on the nutrition label. Housewives who were younger than 60 years were more likely to check the nutrition labels. The lower the age, the higher the reliance on the nutritional labeling content of the food, and the higher the recognition level of nutritional labeling. It was found that the lower the age, the easier it was for the consumer to understand the nutritional labeling. Among housewives in their 30s and younger, 89.5 percent said they believed checking nutrition labels would help their health. In the younger age group knowledge and information on nutrition labeling was acquired from the internet, and in the older age group, knowledge was acquired from television, radio, and newspapers. Research conducted on housewives in other regions in the future could provide more detailed information suitable for the population of each region. This would serve as data for nutrition education on the recognition and use of nutrition labeling for a healthy diet.