• Journal of Digital Convergence
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• v.19 no.9
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• pp.463-468
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• 2021

Although the IoT is showing explosive growth due to the development of technology and the spread of IoT devices and activation of services, serious security risks and financial damage are occurring due to the activities of various botnets. Therefore, it is important to accurately and quickly detect the activities of these botnets. As security in the IoT environment has characteristics that require operation with minimum processing performance and memory, in this paper, the minimum characteristics for detection are selected, and KNN (K-Nearest Neighbor), Naïve Bayes, Decision Tree, Random A comparative study was conducted on the performance of machine learning algorithms such as Forest to detect botnet activity. Experimental results using the Bot-IoT dataset showed that KNN can detect DDoS, DoS, and Reconnaissance attacks most effectively and efficiently among the applied machine learning algorithms.

• The Journal of the Korea institute of electronic communication sciences
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• v.16 no.5
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• pp.947-956
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• 2021

As an interest in metaverse increases, there are many studies to apply virtual reality to indirect experiences. Virtual reality is increasingly being used not only for entertainment such as games but also for educational content. A key technology of indirect experience is modeling an object to provide a realistic experience to the user. Natural environments such as tidal flats change with time, and many living things also live there. In this paper, we propose a method for creating experiential content that accurately models the ecological environment of tidal flats. The proposed method explains how to naturally model the temporal change of tidal flats. We also explain how to model a crab, a creature that inhabits the tidal flat, in the forms of an NPC using the behavior tree. Implementation results show that the proposed method uses simple algorithms but expresses the shapes of tidal flats well.

• The Korean Journal of Food And Nutrition
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• v.34 no.2
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• pp.156-164
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• 2021

This study aimed to investigate the relationship between eating speed and nutritional status among Korean high-school students using Nutrition Quotient for Korean Adolescents (NQ-A). In this study, a questionnaire survey was conducted in 453 high-school students (227 boys and 226 girls) from September 2019 to October 2019 in Chungbuk area. Based on the self-reported speed of eating data, subjects were classified into a fast group (n=180), a medium group (n=184), and a slow group (n=89). NQ-A scores for each group were measured in each speed group. In the environment section, girls showed a significant difference in usage time of electronic devices, such as TVs and smartphones: the fast group spent significantly more time than the medium group (p=0.035). In the practice section, among boys, the slow group had significantly higher scores for washing hands before eating than the medium and the fast groups (p=0.022). This study suggested that eating speed of high school students is associated with health-related environment factor and practice factor of NQ-A, such as time spent on smart devices or washing hands before eating. The study results can provide baseline data for nutrition education on health management of high school students.

• Journal of Industrial Convergence
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• v.19 no.5
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• pp.61-67
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• 2021

This study is a one group pretest-posttest design study to confirm the effect of geriatric nursing practice on elderly care attitude and dementia communication behavior of student nurses. The study was conducted from September to December, 2018. Data were collected through self-report questionnaires of 59 student nurses. The data were analyzed by frequencies and paired t-test using SPSS 21.0 program. As a result, elderly care attitude and dementia communication behavior were significantly increased after the geriatric nursing practice compaired to before the geriatric nursing practice. The results of this study can be used as basic data for the composition of the practice curriculum for student nurses to improve their competence as nurses in the future.

• Industry Promotion Research
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• v.6 no.2
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• pp.47-53
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• 2021

This study is a study on the change of life and leisure satisfaction caused by the reduction of working hours of office workers, summarizing the results of the analysis as follows: First, the change in the working hours of office workers was found to be men (42.4 percent), but women (54.7 percent) had a high increase in personal satisfaction, monthly income of 2 to 3 million won 96.1 percent, and personal satisfaction increased in small and medium-sized cities and towns. Second, leisure satisfaction due to shorter working hours was somewhat high in monthly income of 3 million won to 4 million won (43.6%) and more than 6 million won (39.1%), but there was no change in leisure satisfaction by gender, age, academic background, number of family members, marital status, worker status and region. The revitalization of leisure is a very important task in personal life, but it is meaningful in that it provided implications for socializing leisure as leisure satisfaction is positively spreading in life changes.

• Journal of Korea Society of Industrial Information Systems
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• v.26 no.4
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• pp.1-9
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• 2021

This study was to investigate the types of emergencies transported by the Southwestern Coast Guard, the need for telemedicine guidance, and the perception and attitude of smart glasses as a communication method targeting 31 coast guards. A relatively high frequency and training requirement were confirmed for bleeding, abrasion, and abdominal pain. The demand for telemedicine guidance on medication and triage was higher, and the perceived usefulness and attitude scores for the use of smart glasses were 3.76±0.61 and 3.64±0.45, respectively. A moderate correlation between perceived usefulness and attitude toward smart glasses was confirmed (r=.630, p<.01). With the development of technology, it is time to actively introduce new devices such as smart glasses.

• Journal of Naturopathy
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• v.11 no.1
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• pp.62-67
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• 2022

Background: 'Here and now' in the 21st century, what should we be thinking about in this situation where infectious diseases like COVID-19 are penetrating deeply into our lives? At this point, this study aims to present the concept of 'Healing Humanities.' Purposes: If the Humanities as a liberal arts education have emphasized the value of 'communication and convergence,' putting it up as the slogan until now, the Humanities now should seek practical ways to realize their potentials. Methods: The research method was discussed centering on the literature. Results: This discussion centers around the medieval jewelry therapy by Hildegard von Bingen. That is, this study discusses how Hildegard presented gem therapy treatment as a pioneer in the jewelry therapy. Conclusions: It is meaningful that human health and diseases, which are focused on medical technology today, can now serve as a way of humanities practice, and that Hildegart's jewelry treatment can be triggered by a breakthrough. In that sense, this study aims to reveal the legitimacy of Hildegard's treatment to be secured as the Healing Humanities.

• The Journal of the Korea Contents Association
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• v.22 no.10
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• pp.788-803
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• 2022

This study was conducted to find out the characteristics of H University's students admitted through affirmative action program. The differences between the affirmative action program enrollment students and all students were compared by descriptive statistics and correlation analysis methods. In addition, in-depth interviews were conducted for students who entered the affirmative action program. A qualitative research method was used to analyze the contents of in-depth interviews. The results of the study are as follows. First, the higher the entrance score, the higher the university score for students in the affirmative action program. Second, the college satisfaction of students entering the affirmative action program is higher than that of students enrolled. Third, according to the results of the in-depth interview, the affirmative action program students were both active and not. In conclusion, it is necessary to establish a system in which students can actively prepare for their careers in universities. Accordingly, the expansion of the affirmative action program is likely to contribute to the development of universities.

• Journal of Industrial Convergence
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• v.20 no.9
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• pp.81-89
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• 2022

This study investigates the relationships among academic stress, learning satisfaction, and learning flow of the health science college students who take online classes in college. The subjects were 129 students and the data were collected from November 15th, 2020 to December 22th, 2020 using a self-report structured questionnaire. The data analyzed using descriptive statistics, t-test, ANOVA, Pearson's correlation analysis, and multiple regression. As a result of this study, academic stress showed a negative correlation between learning satisfaction (r=.-78, p<.001) and learning flow (r=.-70, p<.001). And learning satisfaction showed a positive correlation between learning flow (r=.71, p<.001). In the results of multiple regression analysis, factors influencing the learning flow of students were amount of assignments in online classes, number of online practice courses completed in the last semester, academic stress, and learning satisfaction. All of these variables together explained 59.0%. Therefore, in order to increase learning flow in online classes, strategies to reduce academic stress and development of various educational programs are required.

• Journal of Industrial Convergence
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• v.21 no.3
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• pp.83-97
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• 2023

The purpose of this study was to identify perception of mental health recovery of mentally disordered offenders hospitalized at the national forensic psychiatric hospital. The participants were 91 mentally disordered offenders hospitalized at the national forensic psychiatric hospital in C province. The participants were provided with a written questionnaire about mental health recovery so that they could freely describe it, and collected data were analyzed by two researchers according to Krippendorff's content analysis method. As a result, meaning of mental health recovery were derived from 4 categories and 17 themes, and four categories were 'liberate from psychiatric symptoms', 'stable daily and social life is possible', 'living a hopeful and meaningful life' and 'life without crime after discharge'. mental health recovery facilitators and barriers were derived from 4 categories and 14 themes, 'treatment factors', 'personal factors', 'interpersonal factors' and 'environmental factors'. The results of this study can be used as basic data for education and intervention development for mental health recovery of mentally disordered offenders at the national forensic psychiatric hospital.