• Nuclear Engineering and Technology
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• v.54 no.2
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• pp.479-485
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• 2022

At the Korea Institute of Radiological and Medical Sciences, physical human phantoms were developed to evaluate various radiation protection quantities, based on the mesh-type reference computational phantoms of the International Commission on Radiological Protection. The physical human phantoms were fabricated such that a radiophotoluminescent glass dosimeter (RPLGD) with a Tin filter, namely GD-352M, could be inserted into them. A Tin filter is used to eliminate the overestimated signals in low-energy photons below 100 keV. The measurement uncertainty of the RPLGD reader system based on GD-352M should be analyzed for obtaining reliable protection quantities before using it for practical applications. Generally, the measurement uncertainty of RPLGD systems without Tin filters is analyzed for quality assurance of radiotherapy units using a high-energy photon beam. However, in this study, the measurement uncertainty of GD-352M was analyzed for evaluating the protection quantities. The measurement uncertainty factors in the RPLGD include the reference irradiation, regression curve, reproducibility, uniformity, energy dependence, and angular dependence, as described by the International Organization for Standardization (ISO). These factors were calculated using the Guide to the Expression of Uncertainty in Measurement method, applying ISO/ASTM standards 51261(2013), 51707(2015), and SS-ISO 22127(2019). The measurement uncertainties of the RPLGD reader system with a coverage factor of k = 2 were calculated to be 9.26% from 0.005 to 1 Gy and 8.16% from 1 to 10 Gy. A blind test was conducted to validate the RPLGD reader system, which demonstrated that the readout doses included blind doses of 0.1, 1, 2, and 5 Gy. Overall, the E_n values were considered satisfactory.

• Journal of Digital Convergence
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• v.20 no.5
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• pp.11-21
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• 2022

The purpose of this study is to analyze the moderating effect of social support on the effect of the use of social services by the elderly with disabilities on life satisfaction.To this end, the 15th data of the Korean Welfare Panel 2020 were used to verify the characteristics, correlation, and multiple regression analysis of variables related to life satisfaction. The SPSS WIN 25.0 program was used. The survey subjects extracted 684 elderly people with disabilities aged 65 or older, and the use of welfare services was divided into income Service, health Service, home welfare Service, and social participation Service, and the analysis results are as follows. First, it was found that the experience of using welfare services for the elderly with disabilities had a positive (+) effect on life satisfaction. Second, social support showed a moderating effect on the effect of using welfare services for the elderly with disabilities on life satisfaction. Through these results, the necessity of practical intervention measures and development of various programs in social welfare policies that can improve the quality of welfare services for the elderly with disabilities and increase life satisfaction through various social support was suggested.

• Journal of Digital Convergence
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• v.19 no.5
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• pp.383-395
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• 2021

The purpose of this study is based on Pine and Gilmore's (1998) Experiential Economic Theory (4E's). This study mediates the perceived value of the experience factors (entertainment, aesthetic, deviant and educational experience) of Untact fashion and beauty performances. The impact on customer satisfaction was analyzed a total of 230 questionnaires were collected for visitors to the 15th Untact 'Asia Model Festival', which were successfully held in Seoul in 2020. The statistical analysis method used the SPSS 21.0 statistical program. As a result of the study, it was found that the experience factors had a significant effect on perceived value and customer satisfaction. In addition, perceived value was found to have a significant effect on customer satisfaction, and perceived value as a parameter was found to partially mediate the effect of experience factors on customer satisfaction. By studying the empirical analysis in this way, practical implications were presented and basic data that could be used for reference to related research were provided. However, future research should contribute to academic development through research on variables not covered in this research, and research on various untact performances should be continued.

• Korean small business review
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• v.42 no.2
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• pp.1-22
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• 2020

This paper examines the effect of the adoption of international financial reporting standards(IFRS) on the financial reporting of SMEs. As IFRS is principle-based, management's discretion is needed to reflect the economic substance of transactions, and a sound internal accounting infrastructure is needed to support the judgment process. In the case of SMEs, the internal accounting infrastructure is not well established, which makes it difficult to apply principle-based accounting. The survey analysis of 132 small and medium-sized business accounting managers listed in the domestic stock market showed that the reliability of financial statements has increased due to the introduction of IFRS. In particular, SMEs perceived their financial statements as being more reliable after the adoption of IFRS than midsize companies. However, it was found that the costs and risks from the preparation of financial statements have increased significantly, and conflicts between auditors and supervisory authorities related to the application of the principles have increased. In particular, midsize companies felt the increase in conflict with auditors and supervisory authorities bigger than small companies. As for the practical difficulties in applying IFRS, both small and medium-sized companies have difficulty in interpreting the standards and lacked guidelines. In order to resolve these difficulties, it is necessary to enhance the function of Q&A by the Korea Accounting standard board(KASB) or Financial Supervisory Service(FSS). In conclusion, the reliability of the financial statements of SMEs has improved with the introduction of IFRS. However, we believe that policy and institutional support is needed in order to have better financial reporting for SMEs.

• The Journal of the Korea Contents Association
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• v.21 no.11
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• pp.553-564
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• 2021

This study was conducted to understand the effects of participation perception, self-efficacy, self-esteem, and empowerment on self-support intention of self-support work project participants. For this study, a survey was conducted on participants in the self-support work project within the G-gu area. As a result of the study, it was found that the participation perception, self-efficacy, and empowerment of participants in the self-support project had a positive (+) effect on the self-support will. Also, in the process where participants' perceptions of participation, self-efficacy, and self-esteem affect the will to self-support, it was found that empowerment partially mediated participation perception and self-efficacy and fully mediated self-esteem. Based on these results, the following are practical suggestions for improving self-support project participants' will to self-support as follows. First, systematic training courses are needed in the application and selection of recipients, establishment of self-support plans, and gateway training courses so that participants in self-support projects can correctly recognize self-support projects. Second, it is necessary to systematize the case management system provided by the self-help center and re-establish the role in order to strengthen the participants' hope for self-reliance. Third, it is necessary to identify the strengths of the participants in the self-support project, create results for self-support, and operate a program that strengthens the latent motivation to solve their own problems and change their behavior. Fourth, the empowerment of participants and professional ability of practitioners should be strengthened so that participants can solve the alienation and social exclusion experienced in the process of participating in the project.

• Journal of Digital Convergence
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• v.20 no.2
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• pp.525-541
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• 2022

This study aimed to develop simulation practice program with PBL (S-PBL) for nursing students and evaluate the effect of the program on their problem solving ability, clinical performance competency, learning satisfaction and confidence. The participants were nursing students who applied for simulation practice courses at an university in J province. The study was a mixed-method design using a nonequivalent one group pretest-posttest design (n=91) and focus group interview (n=12). Quantitative data were analyzed using SPSS 23.0 program and qualitative data thematic analysis. Quantitative data showed S-PBL was effective in improving clinical performance competency, learning satisfaction and confidence of the participants, but not in improving problem solving ability. As a result of the qualitative study, four themes and eight sub-themes were derived, and the themes were "Learn integrated nursing care based on priority", "Experience team cooperation through communication," "Learn vividly critical care" and "Improved nursing competency". The S-PBL could be effective in practical education for nursing students. In further study, it is necessary to develop various simulation practice programs based on PBL through a mixed-method design and apply them to nursing curriculum.

• Journal of the Korea Convergence Society
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• v.13 no.2
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• pp.263-272
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• 2022

This study was to examine the effect of job insecurity on their psychological contract violation and job satisfaction among airline crew members. Also, this study intended to give meaningful hint in reducing job insecurity crew members feel, and, by examining ways to relieve psychological contract violation, give theoretical and practical suggestions on human resource management of airlines. The findings from empirical analysis are as follows. First, H 1-1 that job insecurity of airline cabin crew members will have positive effect on their transactional psychological contract violation was adopted. Second, H 1-2 that job insecurity of airline cabin crew members will have positive effect on their relational psychological contract violation was adopted. Third, H 2-1 that transactional psychological contract violation of airline cabin crew members will have negative effect on their job satisfaction was adopted. In contrast, H 2-2 that relational psychological contract violation of airline cabin crew members will have negative effect on their job satisfaction was rejected. Finally, H 3 that job insecurity of airline cabin crew members will have negative effect on their job satisfaction was adopted.

• Journal of Digital Convergence
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• v.20 no.2
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• pp.447-454
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• 2022

The purpose of this study was to strengthen the practicality of preliminary teachers in preparation for future education, to respond to structural changes in the teacher training system due to a decrease in the school-age population, and to seek a future-oriented direction for the curriculum of teacher training institutions. To this end, we analyzed the competency diagnosis items of the teacher training institutes in the 5th cycle from 2019 to 2020, and based on the proposal for the development plan for the teacher training system announced by the Ministry of Education in July 2021 and the contents of the 4 discussions, content was presented. The results were as follows. First, to nurture creative and convergence-type talents, teacher training institutions need to develop multi-curricular competency and reorganize the curriculum into a future-oriented curriculum. Second, in order to foster the competence of teachers and preliminary teachers in teacher training institutions, it is essential to strengthen the competence of teachers through the introduction of the metaverse, general teaching methods, and ICT-using teaching methods. Third, teachers' training institutions will introduce and strengthen the 'education practice teacher homeroom system' to strengthen school field-oriented practical competencies, 'dedicated mentor-mentee' centered on seniors and juniors, 'monitoring system' led by university professors, and 'probationary teacher system'

• Journal of Digital Convergence
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• v.20 no.2
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• pp.163-174
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• 2022

Despite the great interest in the metaverse from academia and industry, research so far has been focused on a specific area, and the background of the study is in the recognition that research is necessary from the perspective of the entire metaverse ecosystem. The purpose of this study was to derive the metaverse research framework and each component to study from the perspective of the metaverse ecosystem, and to study the development stage of the metaverse ecosystem. From an academic point of view, the ecosystem components were derived through the Metaverse IDC-Platform, a framework for applying Michael Porter's diamond model to the metaverse. From a practical point of view, the four components of the metaverse ecosystem interact with each other in terms of metaverse application and development. As the basis of this study, it can be used strategically because it is possible to identify areas for reinforcement in academia and industry and provide basic data for insight by closely examining the strengths and weaknesses of each component. The contribution of research is that it has created a foundation for research that has been limited to specific areas from an ecosystem perspective, unlike before.

• Journal of Intelligence and Information Systems
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• v.28 no.3
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• pp.209-235
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• 2022

Starting from 2010, blockchain technology, along with the development of artificial intelligence, has been in the spotlight as the latest technology to lead the 4th industrial revolution. Furthermore, previous research regarding blockchain's technological applications has been ongoing ever since. However, few studies have been examined the standards for classifying the blockchain economic ecosystem from a capital market perspective. Our study is classified into a collection of interviews of software developers, entrepreneurs, market participants and experts who use blockchain technology to utilize the blockchain economic ecosystem from a capital market perspective for investing in stocks, and case study methodologies of blockchain economic ecosystem according to application fields of blockchain technology. Additionally, as a way that can be used in connection with equity investment in the capital market, the blockchain economic ecosystem classification methodology was established to form an investment universe consisting of global blue-chip stocks. It also helped construct an intelligent portfolio through quantitative and qualitative analysis that are based on quant and artificial intelligence strategies and evaluate its performances. Lastly, it presented a successful investment strategy according to the growth of blockchain economic ecosystem. This study not only classifies and analyzes blockchain standardization as a blockchain economic ecosystem from a capital market, rather than a technical, point of view, but also constructs a portfolio that targets global blue-chip stocks while also developing strategies to achieve superior performances. This study provides insights that are fused with global equity investment from the perspectives of investment theory and the economy. Therefore, it has practical implications that can contribute to the development of capital markets.