• Journal of Digital Convergence
• /
• v.19 no.2
• /
• pp.323-337
• /
• 2021

This study will attempt to analyze media art and discuss its main characteristics by using the concept based on Relational Aesthetics 'Affective Turn' as a basis of the theory. In addition, this study has some theoretical and practical implications, both in terms of the research and analysis of artworks and the structure development of art theories and aesthetics. To conduct the research, I have gone through a literature review on previous studies related to media art and Relational Aesthetics. Then, I have conducted a case study on the media art of TeamLab. This study shows that from the perspective of Relational Aesthetics, media art shows unique characteristics such as borderless and shareability. Moreover, it can allow the audience to actually 'feel' the relationship and integration between various objects. I hopethat this research could be used as a solid basis for future research and helpstrengthen the interaction between modern art and the public.

• Journal of Digital Convergence
• /
• v.19 no.2
• /
• pp.509-514
• /
• 2021

The pandemic of COVID-19 is driving the demand for non-face-to-face diagnosis, observation, and treatment in the healthcare environment, which has led to increased interest in helathcare robots. The authors intend to predict the direction in which the quarantine healthcare robots should be utilized in the post-corona era through analysis of national agency reports, on-offline press reports, and domestic and foreign robot company press releases. The COVID-19 pandemic has raised interest in medical robots. And there is a need to apply healthcare robots that can perform tasks such as disinfection, logistics transfer, screening tests, monitoring of patients, remote medical treatment support for isolated patients, and video calls with family members. Therefore, it is considered that future correct development and application of healthcare robots and empirical research to verify them should be continued based on sufficient consideration for various problems associated with the practical application of robots.

• Journal of the Korean Society of Manufacturing Process Engineers
• /
• v.19 no.12
• /
• pp.62-69
• /
• 2020

The demand for industrial robots is proliferating with production automation. Industrial robots are used in various fields, such as logistics, welding, and assembly. Generally, six degrees of freedom are required to move freely in space. However, the palletizing robot used for material management and logistics systems typically has four degrees of freedom. In designing such robots, their main parts, such as motors and reducers, need to be adequately selected while satisfying payload requirements and speed. Hence, this study proposes a practical method for selecting the major parts based on dynamic analysis using ADAMS. First, the acceleration torques for the robot motion were found from the analysis, and then the friction torques were evaluated. This study introduces a constant-speed torque constant instead of friction coefficient. The RMS torque and maximum power of each motor were found considering the above torques. After that, this study recommends the major specifications of all motors and reducers. The proposed method was applied to a palletizing robot to verify the suitability of the pre-selected main parts. The verification result shows that the proposed method can be successfully applied to the early design stage of industrial robots.

• Journal of The Korean Society of Agricultural Engineers
• /
• v.63 no.4
• /
• pp.97-104
• /
• 2021

Despite the practical limitations of calculating the amount of inflow and supply related to the operation of agricultural reservoirs, the role of agricultural reservoirs is gradually being emphasized. In particular, as interest in disaster safety has increased, the demand for preliminary measures to prepare for disasters has been rising, for instance, pre-discharging agricultural reservoirs for flood control. The aim of this study is to analyze the plans for the flood season reservoir operation considering pre-discharge period and water level limit. Accordingly, we optimized the simulation of daily storage using the ratio correction factor (RCFs) and analyzed the amount of inflow and supply using K-HAS. In addition we developed the drought determination coefficient (k) as a indicator of water availability and applied it for supplementing the risk level criteria in the Drought Crisis Response Manual. The results showed that it would be difficult to set the water level limit during the flood period in the situation of little water supply for flood control in agricultural reservoirs. Therefore, it is necessary to operate the reservoir management regulations after measures such as securing additional storage water are established in the future.

• Journal of Industrial Convergence
• /
• v.19 no.4
• /
• pp.127-134
• /
• 2021

The purpose of this study is to examine the mediating effect of depression and social relationships on the effects of physical satisfaction on life satisfaction of multicultural adolescents. For this purpose, data from the 7th year of the 2017 Multicultural Panel (MPAPS) surveyed among young people were used. The sample was subjected to frequency analysis, descriptive statistics, and correlation analysis to identify the characteristics of 1,146 students in the first year of high school at the time of the survey. In addition, the mediating effect of depression and friendship was analyzed, and as a result, it was found that depression and friendship were partially mediated in the effect of physical satisfaction on life satisfaction of multicultural adolescents. Based on the research results, it is significant in that it provides basic data on programs and practical implications that can be used in the social welfare field to reduce depression and promote amicable friendships for multicultural adolescents to improve life satisfaction.

• Food Science and Industry
• /
• v.53 no.3
• /
• pp.307-315
• /
• 2020

The food R&D operating system needs to be changed according to the changes in the food industry as well as the domestic and overseas environments. In this aspect, a future-oriented food R&D operating strategy linked with the governmental policy are proposed to foster the promising food industry. The strategic R&D approaches are summarized on the basis of global mega-trends and food industry trend analysis, and current R&D status and issues are also reviewed to set the R&D operating direction for future food industry. To advance the R&D operating system of the food industry, some practical suggestions are given as follows: strengthening the research planning system for efficient R&D program operation, enhancing the role assignment and collaboration among the R&D organizations, reinforcing the support system tailored to industrial sites and securing the future technology bases as well as resolving present issues, and linking R&D programs with policies and improving the food R&D management system.

• Journal of the Korea Institute of Information Security & Cryptology
• /
• v.14 no.6
• /
• pp.69-78
• /
• 2004

During the last decade, security models have been defined for two- and three-parity key exchange protocols. Currently there is a growing research interest in security models for group key management schemes. While various security models and provably secure protocols have been proposed for distributed group key exchange schemes, no results are hewn for centralized group key distribution schemes in spite of their theoretical and practical importance. We describe security requirements and a formal security model for centralized group key distribution scheme: we define the model on the channel controlled by adversaries with the ability of strong user corruption. In the security model, we propose a conversion module which can transform centralized tree-based group key distribution schemes in the literature to provably secure centralized tree-based group key distribution schemes.

• Journal of the Korea Society of Computer and Information
• /
• v.26 no.2
• /
• pp.177-182
• /
• 2021

This study was carried out for the purpose of selecting and structuring educational content for personal information protection education in supplementary education for childcare workers. Prior research and literature data were collected and analyzed to select educational content, and a preliminary survey was conducted for 125 applicants for education. Based on the surveyed data, the educational content was structured through focus group interview. In the focus group interview analysis, the person in charge of personal information of the institution and those who have completed education participated. Group interviews and individual interviews through e-mail, etc. were conducted, and the final contents were selected after reviewing the appropriateness of the derived opinions by two educational experts. It was found that the direction of the search for personal information protection education contents should be added to the contents of practical work in each stage of information management and practice such as document writing.

• Journal of Korean Dental Hygiene Science
• /
• v.4 no.1
• /
• pp.19-27
• /
• 2021

Background: The present study aimed to gather basic data for the development of an educational tuberculosis prevention program for prospective dental hygienists by understanding the level of knowledge, attitudes, and preventive behaviors related to tuberculosis for students in the Department of Dental Hygiene, who need preventive access to tuberculosis infection. Methods: The present study used a self-reported questionnaire on knowledge, attitudes, and preventive behaviors regarding tuberculosis, which was administered to dental hygiene students attending D University located in D city. Results: The average knowledge regarding tuberculosis was 16.17 ± 6.14, out of 30 points. Attitude regarding tuberculosis averaged 48.59 points (± 4.46), out of 60 points, and the degree of preventive behavior was 46.29 points (± 5.0), out of 60 points. Third year students ranked highest for knowledge regarding, attitude toward, and infection prevention behaviors of tuberculosis, compared to those in their first or second year (F = 7.20, p = 0.000). Those who had experienced tuberculosis themselves or with their relatives had higher attitudes toward tuberculosis than those who did not (F = 2.32, p = 0.02). Additionally, the higher the knowledge (β = 0.209, p = 0.004) and attitude (β = 0.425, p = 0.000) about tuberculosis, the higher the level of tuberculosis infection prevention behavior. Conclusion: Based on the results of the present study, it appears to be necessary to provide practical education to ensure that all students in dental hygiene are equipped with knowledge about tuberculosis, and that as a dental hygienist in carrying out dental hygiene management with a changed attitude, the act of preventing tuberculosis infection can be appropriately performed.

• Journal of Industrial Convergence
• /
• v.19 no.3
• /
• pp.51-60
• /
• 2021

This study aims to do in-depth exploration of the meaning of learning village activists' work, focusing on job crafting. A qualitative case study was conducted through participant observation and in-depth interview from March 23, 2020 to March 05, 2021. As a result of the analysis, a task crafting showed 'task performance using one's own strengths and resources', 'executing additional tasks other than the specified tasks', and 'changes in work methods for efficient task performance'. In a cognitive crafting, 'recognition of the importance of work and sense of vocation', 'recognition of happiness and pleasure in work', and 'recognition of roles to expand work expertise' appeared. In a relation crafting, 'building a community of practical learning with colleagues', 'a mediator of the growth and change of village residents', and 'coexistence of conflict and cooperation with business associates' were shown. In conclusion, learning village activists were actively changing their work through the job crafting and this can be used as basic data to improve the satisfaction with their work. A follow-up study was proposed for activists in learning villages in other regions.