The purpose of this research was to verify the importance and performance of sustainable crisis management in Korean fitness centers using Importance-Performance Analysis (IPA). For this study, 304 fitness center executives and managers in Seoul and Gyeonggi region were selected from 21 March to 17 May 2020. Frequency analysis was performed using SPSS 24.0, and exploratory factor analysis was conducted to verify the validity and reliability. Priority analysis and IPA analysis were performed to compare the mean values, and the following results were obtained. In the first quadrant, there were six attributes besides keeping social distancing between employees and customers. In the second quadrant, there were four attributes in addition to regular disinfection of the gymnasium. In the third quadrant, there were six attributes besides maintain clean furniture. Third, there were six attributes other than maintaining clean furniture in the third quadrant. Lastly, in the fourth quadrant, there were three attributes in addition to the restriction of face-to-face meetings. The conclusion was as follows. First, equip supplies for the prevention of COVID-19, keep social distance, and check government support policies. Second, analyze economic support policies, and research their application methods. Third, prepare various non-face-to-face communication methods and Untact (noncontact) marketing strategies. Fourth, make a checklist for factors with relatively little importance.

The COVID-19 pandemic has changed the fitness-related field. More people started working out at home, and the use of fitness mobile apps that can measure the amount of exercise through a scientific method has increased compared to before the COVID-19 pandemic. This phenomenon is likely to continue even after the COVID-19 pandemic, and therefore this study aimed to investigate the importance of and satisfaction with a fitness app’s functions according to consumers while using the fitness mobile app. Through this study, we intended to provide data for creating an environment where users can use fitness mobile apps consistently. A total of 420 questionnaires were distributed through Google Survey for about 3 months, from 13 September to 20 November 2020, and a total of 399 complete questionnaires were analyzed in this study. Regarding the data processing methods, frequency analysis, exploratory factor analysis, reliability analysis, descriptive statistical analysis, and IPA were used. The results are as follows. First, the first quadrant of the IPA matrix indicated the high importance of and satisfaction with the fitness mobile app, and included five attributes: cost-effectiveness, easy-to-understand information, ease of use and application, privacy protection, and compatibility with other devices. Second, the second quadrant of the matrix indicated relatively low satisfaction in association to high importance and included five attributes: accurate exercise information provision, design efficiency, daily exercise amount setting, convenient icons and interface, and provision of images and videos in appropriate proportions. Third, the third quadrant of the matrix, indicating low importance and low satisfaction, included five attributes: not sharing personal information, overall design composition and color, customer service, reliable security level, and providing information on goal achievement after exercising. Fourth, in the quadrant of the matrix, indicating low importance and high satisfaction, five attributes were included: exercise notification function, continuous service provision, step count and heart rate information, individual exercise recommendation, and individual body type analysis information.

No abstract

With rapid rise of virtualization technology from diverse types of cloud computing service, security problems such as data safety and reliability are the issues at stake. Since damage in virtualization layer of cloud service can cause damage on all host (user) tasks, Hypervisor that provides an environment for multiple virtual operating systems can be a target of attackers. This paper propose a security structure for protecting Hypervisor from hacking and malware infection.주저자：숭실대학교 컴퓨터학과 통신연구실,

This research analyzes the impact of quality of service as perceived by Hapkido students on their exercise continuation and recommendation intentions. It also identifies measures to reduce the rate of student dropout, strengthen competitiveness, and create more efficient marketing strategies for consumer patterns that are rapidly diversifying Hapkido. A questionnaire survey method was conducted with 300 middle and high school students, aged 14–19 years, with between three months and two years of Hapkido training in Incheon and Bucheon during March and April 2019. Frequency, factor, reliability, correlation, and standard multiple regression analyses were conducted on the surveyed data. The study concludes that, first, considering the impact of service quality on exercise continuation intention, service quality positively affects reliability, personification, and perceptual openness; in terms of possibility, it positively affects typicality, personification, and perceptual openness; and in terms of reinforcement, it positively affects reliability and perceptual openness. Second, regarding the impact of service quality on recommendation intention, it positively affects reliability, personification, and perceptual openness. Third, exercise continuation intention positively affects recommendation intention. This study suggests that various efforts should be made to increase the reliability, tangibility, confidence, and empathy of the service quality to increase the exercise continuation and recommendation intentions of the trainees of Hapkido gymnasiums.