• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.38 no.6
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• pp.689-696
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• 2020

It is known through prior research that the crust of the Korean Peninsula moves southeast at an annual average of 3 cm/year. The 2011 Great East Japan Earthquake caused a great change in the crust of the Korean Peninsula. Since then, the frequency of earthquakes has increased on the Korean Peninsula. Therefore, by using NGII and IGS GNSS observation data of the recent 15 years, to analyze the trends of changes in the deformation of the Korean Peninsula before and after the outbreak of the Great East Japan Earthquake. Data processing utilized Bernese Software V5.2, a widely used scientific and technical software around the world. As a result, the global movement of the Korean peninsula differed by about 4mm and the direction of movement by about 10° compared to before the Great East Japan Earthquake. As for the internal distortion of the Korean Peninsula, the East-West expansion of the Korean peninsula's crust was observed during the Great East Japan Earthquake, but it is believed that it has not fully returned to the level before the Great East Japan Earthquake.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.3
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• pp.405-411
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• 2020

Recently, studies on underwater communication, related to the development of underwater resources, disaster monitoring and defense, have been actively carried out. In the design of wireless communication systems, path loss is the most important information to derive a link budget that is required to guarantee communication reliability by calculating received power level for the given communication link. The underwater acoustic channel have different characteristics according to geographical location and relevant environmental factors such as water temperature, depth, wave height, algae, and turbidity. Subsequently, many research institutes aiming to develop underwater acoustic communication systems are researching actively on the underwater acoustic channels in various sea areas. In Korea, however, studies on the path loss of the acoustic channel are still insufficient. Therefore, in this study, the path loss of the acoustic channel are studied based on measurement data of the at-sea experiment conducted at Geohae-do, southern sea of Korea.

• Journal of Digital Convergence
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• v.19 no.3
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• pp.37-45
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• 2021

Since the Syrian Civil War in 2011, the number of refugees has been on the rise in Korea as well as worldwide. In addition to recognition of legal status for refugees, employment and education support, and qualification recognition are emerging as social issues. In this context, this study aims to compare the cases of Netherlands and Norway in terms of evaluation and recognition of refugees' qualifications. The findings of the study show that although there were concerns about the lack of official documents to verify the qualifications of refugees, the two countries have developed a special process for the evaluation and recognition for refugees respectively according to the Lisbon Recognition Convention. In addition, both countries have developed a recognition of prior learning system which has made the qualification recognition process flexible from a point of refugees. These experiences could be used as benchmarks for the Korean government which has a responsibility to develop its own qualification recognition system for refugees in the near future.

• The Journal of the Korea Contents Association
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• v.21 no.4
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• pp.123-136
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• 2021

While same-sex marriage is officially legal in 28 countries, widespread discrimination continues against people in the LGBTQ community in Confucian Asian countries. This study examines how media exposure affects attitudes towards gay men using the cultivation theory in China, where LGBTQ issues are still censored in media. Moreover, this study looks into the immediate effect of watching gay content on attitudes towards a friend's coming out. Based on the survey of 236 young adults aged 18-22, the study results showed that heavy viewers of gay content and female had a more favorable attitude towards gay men. Furthermore, while the participants favored non-gay content, those who viewed gay content were more supportive of a friend's coming out than those who watched non-gay content. The findings indicated the cultivation effect on attitude towards same-sex relationships in a Confucian Asian country that can be used to foster a more inclusive society.

• Journal of Industrial Convergence
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• v.20 no.7
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• pp.37-50
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• 2022

This study intends to analyze the learning effect of asynchronous online classes used in education fields around the world after the COVID-19 pandemic. To this end, we compared and analyzed the lecture evaluation and final exam questions of the HTML5 web programming course, which was conducted offline in 2019 and asynchronously online in 2020 due to COVID-19. As a result of the analysis, no significant difference was drawn between the two teaching methods in the lecture evaluation score and final exam score. However, contrary to concerns about the application of online classes to the entire curriculum, the lecture evaluation and final exam scores of the video-based online classes were high, suggesting the possibility that online classes could be more effective than offline classes if well organized and managed in the future.

• The Journal of the Korea Contents Association
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• v.22 no.10
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• pp.383-391
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• 2022

This study was aimed at investigating relationship between global health nursing competency and multicultural acceptance of nursing students. The subjects were 145 nursing students from a university, and data were collected from June 8 to 19, 2020. The data were analyzed using descriptive statistics, t-test, ANOVA, Pearson's correlation coefficient, and regression. The subjects' global health nursing competency was 2.81±1.11 points (four-point scale) and multicultural acceptance was 3.84±0.68 points (six-point scale). Global health nursing competency differed according to gender and degree of preparation as a global nurse, and multicultural acceptance differed according to gender, multicultural education experience, and degree of preparation as a global nurse. Global health nursing competency had a positive correlation with multicultural acceptance (r=.18, p=.027), and it was showed that multicultural acceptance affected global health nursing competency (B=.29, p=.027). To be prepared as a global nurse, it is necessary to enhance the global citizen insight about multicultural experiences.

• The Journal of the Korea Contents Association
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• v.21 no.11
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• pp.87-99
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• 2021

As face-to-face social exchanges are limited by the pandemic, the influence of the metaverse, a virtual space crosses virtual and reality, is gradually expanding. Various metaverse platforms are currently taking advanced AI technology to provide users with a more diverse experience. However, as a result, if AI-human communion in the metaverse space is as active as the relationship between humans, this may lead to side effects that threaten humanity. This study emphasized the value of empathy as a way to minimize the side effects, and suggested that the concept and role of empathy need to be expanded. Accordingly, we conducted an empirical study to examine the difference between social relationship in the metaverse and in real life at the current level, and based on the results, we predicted the future social relationship in the environment where AI was applied to the metaverse. Combining the study, we proposed "Digital Human Empathy" for human dignity in the digital age.

• Journal of Broadcast Engineering
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• v.27 no.5
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• pp.629-637
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• 2022

This study is an experiment on the use of RDW(Redirected Walking) technology, which helps users to hardly feel the difference of user movement in the limited physical space and the extended virtual space when the user moves while wearing the HMD in the real world. The RDW function installed in 3D space realization software such as Unity3D is used to induce the user's redirection by slightly distorting the virtual space according to the user's point of view. However, if the RDW distortion rate is used excessively, dissonance is highly likely to occur. In particular, it is easy to make errors that cause cybersickness of users. It is important to obtain the RDW data value in the virtual environment so that the user does not feel fatigue and cybersickness even after wearing the HMD for a long time. In this experiment, it was tested whether the user's RDW was safely implemented, and item and obstacle arrangement data were obtained through this experiment. The RDW data obtained as a result of the experiment were used for item placement and obstacle placement in the virtual space.

• Journal of the Korea Society of Computer and Information
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• v.26 no.5
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• pp.111-117
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• 2021

The object of this study is through an empirical analysis, how cultural capital at the individual level and social welfare expenditure at the national level affect the life satisfaction of the elderly. In this study method, a Hierarchical Linear Model(HLM) analysis was performed on 3,297 elderly people aged 65 and older and 9 OECD countries. As a result of analysis, first, it was confirmed that life satisfaction and social class had a significant effect. Therefore, in to increase the satisfaction of the life of the elderly, policy and practical intervention measures that can narrow the gap between social classes should be prepared. Second, the old-age pension and survivor's pension had no significant effect on life satisfaction. However, as a result of the interaction, social class has a positive effect on life satisfaction, and it was confirmed that the lower the income inequality, the more positive the life satisfaction was. In conclusion, this implies that both individuals and countries should make efforts to variously increase the life satisfaction of the elderly.

• Journal of Korea Society of Industrial Information Systems
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• v.28 no.1
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• pp.35-48
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• 2023

In this study, we introduced the development status and the government policy of the Chinese automobile industry under the rapidly changing global economic environment. We conducted a consumer trend survey on automobile purchases by consumers in China. Despite the Chinese government's strong national emission control policy and stricter standards for manufacturing and selling internal combustion engine vehicles, 59.6% of respondents saying they would choose an internal combustion engine vehicle when purchasing a vehicle in the future for various reasons. It was confirmed that there is a significant gap between government policies and consumer perceptions. In addition, we have discovered the recent declining trend of automobile sales in China, and used the monthly sales volume from January 2010 to December 2020 as training set, and the sales volume from January 2021 to November 2022 as a test set. We proposed and evaluated a time-series model for predicting future automobile demand in China. Then, we showed the monthly sales forecast for 2023 when each model was applied.