• Journal of the Computational Structural Engineering Institute of Korea
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• v.34 no.1
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• pp.25-33
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• 2021

With the development of machine learning techniques, various types of data such as vibration, temperature, and flow rate can be used to detect and diagnose abnormalities in machine conditions. In particular, in the field of the state monitoring of rotating machines, the fault diagnosis of machines using vibration data has long been carried out, and the methods are also very diverse. In this study, an experiment was conducted to collect vibration data from normal and abnormal compressors by installing accelerometers directly on rotary compressors used in household air conditioners. Data segmentation was performed to solve the data shortage problem, and the main features for the fault classification model were extracted through the chi-square test after statistical and physical features were extracted from the vibration data in the time domain. The support vector machine (SVM) model was developed to classify the normal or abnormal conditions of compressors and improve the classification accuracy through the hyperparameter optimization of the SVM.

• The Journal of the Convergence on Culture Technology
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• v.7 no.3
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• pp.255-260
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• 2021

This study tried to investigate the effects of the adaptation of middle-aged and elderly adult learners to college life on happiness. For this purpose, a questionnaire survey and analysis were conducted on 321 middle-aged and older adults studying at two-year and four-year colleges in Daegu and Gyeongbuk Province, and the results are as follows. First, college life adaptation according to the general characteristics of middle-aged and elderly learners are higher for those in their 50s and 2nd grade in good health condition. Happiness was the highest women, 60s and those in the form of households where only couples live. Second, there is a static correlation between the adaptation of middle-aged and elderly adult learners to college life and happiness, and the correlation between satisfaction with internal growth and satisfaction with meaning was the highest. Third, it was found that middle-aged and elderly adults' adaptation to college life influenced happiness, and the adaptation to adult student relationships, which is the lower part of the adaptation to college life, had the greatest impact on happiness. The above research results suggest that the various positive experiences experienced in university life can affect happiness by easing student relationships, psychological stability, and physical tension, and improving one's own satisfaction with internal growth.

• The Journal of the Convergence on Culture Technology
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• v.8 no.1
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• pp.59-66
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• 2022

This study was conducted to find out whether excellent and non-excellent players could be distinguished by the achievement goal orientation(task-orientation, ego-orientation) test and the self-management(physical, interpersonal, training, mental management) test targeting youth soccer players. The subject of this study were 299 players(144 middle school students, 155 high school students) including 131 representative players by age and 168 general players who registered with the Korea Football Association. The questionnaires for data collection include the Task & Ego Orientation in Sport Questionnaire(TEOSQ) developed by Duda and Nicholls(1989) and the athlete self-management questionnaire(ASMQ) developed by Heo Jeong-hoon(2003) was used. For data analysis, frequency analysis, factor analysis, reliability analysis, and discriminant analysis were performed using SPSS 23 version. As a result of analyzing the data, task orientation and ego orientation, which are sub-factors of achievement goal orientation, were both confirmed as tests that did not discriminate between excellent and non-excellent players. On the other hand, the self-management test was confirmed as a test that can discriminate between excellent and non-excellent players in body management, training management, and mental management excluding interpersonal management among the sub-factors of self-managemnet. In particular, among self-management, mental management was identified as the most important factor in discriminating between excellent and non-excellent athletes.

• Journal of Industrial Convergence
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• v.20 no.3
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• pp.73-79
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• 2022

The purpose of this study was to examine the relationship between parental participation motivation, satisfaction, and intention to reuse children with developmental disabilities using psychomotor centers. To this end, a questionnaire survey was conducted on the parents of children participating in psycho-exercise programs at a private developmental disability center located in the metropolitan area. The collected data was 188 copies, and the causal relationship was verified through descriptive statistics, factor analysis and reliability analysis, correlation analysis and regression analysis. As a result of the analysis, the following conclusions were obtained. First, in the relationship between parental participation motivation and satisfaction with regard to psychological exercise participation of children with developmental disabilities, only pleasure and social factors were significant in use satisfaction, and only social, health and physical fitness factors in performance satisfaction showed a significant influence. Second, in the relationship between participation motivation and intention to reuse, there were significant influences on pleasure, skill development and sense of achievement, and social factors. Third, in the relationship between satisfaction and intention to reuse, intention to reuse was significantly explained in factors of satisfaction with use and satisfaction with performance. In order to increase the reuse rate of psychomotor centers in the future, it is judged that additional analysis is necessary in addition to the measurement variables of this study.

• Science of Emotion and Sensibility
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• v.24 no.4
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• pp.69-78
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• 2021

The development of smart healthcare wearables for health is accelerating. Among them, many wearable products using EMS electrical stimulation, which is one of the active research fields, have been released. However, the EMS wearable, which has been studied or released, is released in a comprehensive full-body suit that does not focus on muscle segmentation or a belt that covers the entire abdomen. Therefore, this study intends to use two breathing methods by applying an EMS pattern that subdivides specific muscles and attach a stretch sensor that can measure breathing to the abdominal pressure belt. The measurement method was conducted by inhaling and exhaling, and the subjects were 10 men in their 20s with healthy bodies. As a result of this study, the sensor's sensitivity was 5 and 3 mm, and the basic sensor in both thoracic and abdominal breathings and the EMS abdominal pressure belt showed improved respiration activation after applying electrical stimulation before and after application. It is concluded that, because of the two patterns produced based on the physical function, the difference in respiration activation effect and sensitivity between sensors could be confirmed with three sensors rather than not applying electrical stimulation suitable for the respiration method. Based on the results of this study, a follow-up study aims to develop breathing smart clothing that can be monitored in real time in clothing-type wearable products that incorporate EMS patterns and stretch sensors.

• Journal of the Korea Convergence Society
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• v.13 no.3
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• pp.173-184
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• 2022

Focusing on the TikTok, this paper studies the factors that influence the use intention, flow and addiction of the elderly in short videos from three aspects of media attraction, perceived usefulness and user characteristics through quantitative research methods. In recent years, influenced by various factors, more and more seniors have begun to indulge in short form videos, which will do harm to their physical and mental health. Therefore, the researchers believe it is necessary to identify the behavioral intention of seniors and the path to addiction. According to the research results, the attractiveness of TikTok and the characteristics of seniors have a positive impact on the usefulness of media. In addition, the study confirms that media usefulness has an impact on use intention and use behavior, which may develop into immersion and addiction. This study not only supplements the classical TAM theory, but also provides a reference for helping seniors to use the Internet in a healthy way. The researchers look forward to expanding the research on the various Internet platforms used by seniors in different countries and regions.

• Journal of Korea Entertainment Industry Association
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• v.14 no.3
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• pp.343-352
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• 2020

The aim of this study was to investigate the relationship between level of participation in children's play, empathy ability and coping behavior in mothers of children with disabilities. The study included 94 mothers of children with disabilities and the study was conducted from May 2018 to August 2018 based on the questionnaire about the level of participation in children's play, empathy ability and coping behavior. According to the study, Mothers of children with disabilities actively participate in physical play with their children and have a higher emotional empathy compared to cognitive empathy, and have acted to actively solve the problems for their children. When children have been treated for more than 1 to 2 years, the level of participation in children's play and the coping behavior were the highest. The longer their children's treatment period, the higher the mothers' empathy. The correlation between level of participation in children's play and coping behavior were significant. And empathy and coping behavior had a strong positive linear relationship. These results suggest that there are differences in level of participation in children's play, empathy and coping behavior depending on mothers' of children with disabilities general characteristics and the higher level of mothers' of children with disabilities participation in children's play, the more empathetic they have. When individualized intervention is provided, we look forward to providing professional service that take into account the characteristics of mothers of children with disabilities.

• Journal of the Korean Orthopaedic Association
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• v.55 no.1
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• pp.29-37
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• 2020

Manual therapy has undergone parallel development throughout many parts of the world dating back to ancient times for at least 2,500 years. The earliest historical reference to the practice of manual therapy in Greece, dates back to 400 B.C. Over the centuries, manual medicines have fallen in and out of favor with the medical profession. To truly understand the principle, it is important to know that manual therapy was initially the mainstay of the three leading alternative health care systems, osteopathy, chiropractic, and most notably physical therapy. These were all founded in the latter part of the 19th century in response to the shortcomings in allopathic medicine. Although it has been around for a long time and has been used all over the world, there are a few reports on manual therapy treatment, and most papers provided a low level of evidence. Despite the controversies over manual therapy, its use appears to be increasing gradually. This article reviews the history of manual therapy from ancient times to the present including Korean history, discusses the current state of knowledge on manual therapy, and informs physicians who manage musculoskeletal pain.

• 한국노년학
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• v.40 no.1
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• pp.179-196
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• 2020

The purpose of this study was to identify the factors impacting fear of dementia, targeting the aged in the community. The study targeted 258 seniors aged 65 or older attending the senior college or using the senior citizen community center in areas of Jeollannam-do. Data were analyzed using descriptive statistics, t-test, ANOVA, Pearson correlation coefficient and a stepwise multiple linear regression. Fear of dementia of the aged showed significant positive correlations with dementia anxiety, and aged anxiety. dementia anxiety, aged anxiety, dementia experience, use of a hearing aid, religion, level of dementia interest were significant predictors influencing fear of dementia of aged in the community, and these variables accounted for 37.2% of the variance. Therefore, this study suggests that in order to p revent fear of dementia of aged people in the primary health care setting, it is necessary to have a nurse's assessment on the factors affecting dementia as well as a multi-faceted education strategy for proper recognition of dementia.

• The Journal of the Convergence on Culture Technology
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• v.7 no.4
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• pp.491-501
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• 2021

Purpose: This study is designed to provide care workers with basic data on the development of job training programs for enhancing professionalism of senior care services by identifying and analyzing job recognition and education requirements according to the type of work place. Methods: Data were collected from April to July 2019 from 177 care workers working at the Elderly Care Facilities, Elderly Housing Welfare Facilities and Rehabilitation Facilities in the B Metropolitan City. It was analyzed using the SPSS Win 21.0 Statistical Program. Results: The results of job recognition of care worker according to the type of work place shows as follows. As for health care welfare facilities for senior citizens and residential welfare facilities for the elderly was the highest level for physical change and mobile care protection belonging to basic care protection technologies. For the rehabilitation and welfare facility, human rights and prevention of abuse among senior citizens which is belonging to occupational ethics and attitudes of care workers showed the highest. Conclusion: It is required for differentiated job training to enhance capacity for care workers according to the type of work place, and it is needed to developed systematic and specific customized hands-on training to perform, not for simple knowledge.