• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.7
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• pp.879-884
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• 2020

In the conventional video file system, videos are stored in a high performance server which has mass storage hard disks or disk arrays. For 3D internet broadcasting, real time operations are required to transmit video files to many clients. This paper describes the design of the 3D internet broadcasting system which can provide realtime streaming service to many users in the 5G environment. In reality, unicast is used to transmit multimedia contents over the internet rather than IP multicast since IP multicast has its own drawbacks in deployment, security, maintenance and so on. In addition, multimedia broadcasting service system like VoD has difficulties in applying to 3D internet broadcasting system since it requires a large amount of system and network resources. In this work, we develop a 3D internet broadcasting system which can construct effective data delivery by minimizing performance-degrading factors.

• Journal of Convergence for Information Technology
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• v.11 no.2
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• pp.47-56
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• 2021

The purpose of this research was to develop an augmented reality-based surgical nursing practice education application. The research proceeded in ADDIE order of analysis, design, development, implementation, and evaluation stages. In the analysis phase, we analyzed the surgical nursing learning needs of the expert group and nursing student group. As a result of the analysis, the demand for surgical instruments was generally high. We selected 51 surgical instruments of the 7 categories most frequently used in the operating room based on the needs, and produced them as AR Book. The augmented reality application was created based on the Unity 3D engine, and the application was built with Android OS so that the target person could use it. Expert assessment of application for augmented reality-based surgical nursing practice education application showed 73.4±4.3 out of 80. This study is significant in the part that first developed a new method of learning tools for surgical instruments. We determined that an augmented reality-based application has reality, portability, accessibility and simplicity.

• Trans-
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• v.10
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• pp.31-50
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• 2021

Media audiences are defined in a complex relationship with a comprehensive media environment, and are structured and reconstructed according to changes in the media environment. Today, with the changes in the media environment represented by convergence and transmedia, discussions on audiences are actively developing, and debates between positive and negative views on the cultural and political characteristics continue. This paper aims to systematically examine the complexity and ambivalence of new audiences beyond the binomial confrontational debate, and to understand the conditions and mechanisms under which the progressive possibility can be actualized. First, it looks at the changes in today's media environment and contents, and examines the changing patterns of audiences in connection with them based on related research. In addition, it examines the debate on the cultural and political characteristics of new audiences, and explores ways to construct /reconstruct alternative audiences based on Jacques Ranciere's discussion. In conclusion, the characteristics and contents of the utopian and dystopian moments of the transmedia audience were examined, and the necessary works for realizing the former were identified.

• Journal of Convergence for Information Technology
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• v.11 no.7
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• pp.136-144
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• 2021

This study was conducted to verify the effectiveness of the university's extracurricular program of convergence majors on lifelong education for the disabled on the performance of restaurant employment skills for high school students with intellectual and developmental disabilities. The research method consisted of a case study procedure for three intellectual and developmental disability high school students, specifically using a single subject research technique. The study found that high school students with intellectual and developmental disabilities effectively acquired and maintained restaurant employment skills through extracurricular program on convergence majors of lifelong education for the disabled. In conclusion, the university's extracurricular program on convergence major of lifelong education for the disabled was analyzed to be effective in adapting to adult life and self-reliance, including restaurant employment skills of students with intellectual and developmental disabilities.

• Journal of the Korea Society of Computer and Information
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• v.26 no.3
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• pp.1-7
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• 2021

In this paper, optimized media data retrieval and transmission based on the Hybrid CDN/P2P architecture and selective storage through user's prediction of requestability enable seamless data transfer to users and reduction of unnecessary traffic. We also propose a new media management method to minimize the possibility of transmission delay and packet loss so that media can be utilized in real time. To this end, we construct each media into logical segments, continuously compute weights for each segment, and determine whether to store segment data based on the calculated weights. We also designate scattered computing nodes on the network as local groups by distance and ensure that storage space is efficiently shared and utilized within those groups. Experiments conducted to verify the efficiency of the proposed technique have shown that the proposed method yields a relatively good performance evaluation compared to the existing methods, which can enable both initial latency reduction and seamless transmission.

• Journal of Digital Convergence
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• v.19 no.1
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• pp.349-354
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• 2021

The purpose of the project is to study the factors affecting the new user experience and satisfaction as the concert market of K-POP is moved to the online stage by the Corona 19. The study conducted a survey and in-depth interviews with men and women in their 20s and 30s who participated in the K-POP online concert, consisting of proposed by Stephen P. Anderson. The study found that participants' propensity, concert composition, platform-supported technology, and quality factors affect user experience satisfaction. It was also noticed that while the grafting of new technology did not have a significant effect on the part of Pleasurable, the satisfaction level was significantly reduced if the quality was poor. Hopefully, this study becomes a reference to the future direction of online concert development.

• KIPS Transactions on Computer and Communication Systems
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• v.9 no.12
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• pp.333-338
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• 2020

This paper proposes an augmented reality-based electronic circuit education system as a way for electronic circuit education, which is the basis of ICT convergence technology field. It consists of a hardware module that can identify the actual circuit and a mobile educational content that can check the current flow, input, output, and measured value by applying augmented reality technology. An experiment was conducted on image recognition, which is the main performance, for the purpose of stable operation of the system, and as the experimental method the recognition rate was measured by changing the distance between the hardware module and the mobile device to a certain interval. As a result of the experiment, the recognition rate was 100 percent at a distance of 25[Cm] or higher, and it was confirmed that the recognition rate decreased by 12% at a distance below 25[Cm], which can be said to be the effect of an error that results in image loss taken due to close distance. In the future, we plan to apply the education system presented in this paper to classes, which increases the efficiency of classes and improve students' interest and understanding of the subject.

• The Journal of the Convergence on Culture Technology
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• v.7 no.3
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• pp.571-576
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• 2021

This study was carried out to overcome the problems of the existing fitness business and to build a fitness system that can meet the increased demand in the Corona situation. As a platform technology for non-face-to-face fitness edutainment service, it is a next-generation fitness exercise device that can use various body parts and synchronize network-type information. By synchronizing the exercise information of the fitness equipment, it was composed of learning contents through MR-based avatars. A quantified result was derived from examining the applicability of the customized evaluation system through momentum analysis with A.I analysis applying the LSTM-based algorithm according to the cumulative exercise effect of the user. It is a motion capture and 3D visualization fitness program for the application of systematic exercise techniques through academic experts, and it is judged that it will contribute to the improvement of the user's fitness knowledge and exercise ability.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.22 no.2
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• pp.15-20
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• 2022

Colours are primarily composed of three properties - hue, brightness, and saturation, However, each property of colour is not independently visually recognised. Previous studies on saturation and brightness found that brightness was sensed differently depending on the degree of purity of the saturation; however, most of the psychophysical experiments used subtractive mixing. Therefore, fundamental research on colour perception based on display is needed. In this study, we conducted a psychophysical experiment and to investigate the visual characteristics of saturation and brightness based on a display with a self-luminous system. After selecting a certain brightness in the additive-mixed display, the experiment was conducted by adjusting the saturation of the main colours. Thus, by analysing the experimental results, we determined whether the results were the same as ones from subtractive mixing and whether the data are meaningful for the characteristics of colour perception. We also suggested future research directions.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.32 no.4
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• pp.89-109
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• 2021

The purpose of this study is to provide background information for the improvement of e-Book service task in academic libraries through the task analysis of e-Book service librarians. The semi-structured interviews with 9 participants were analyzed using Activity Theory. The study results showed that participants have used various tools and interacted with diverse people to attain the goals of e-Book services. In addition, the division of labor and rules related to e-Book services were observable. However, there exist some problems in task performance, such as lack of budget, inconvenience of use due to unstandardized e-Book production, and disagreements of opinions. Furthermore, based on participants' responses, the ways of improvement of e-Book services in academic libraries were suggested in the aspects of content, system, and policy.