• The Journal of the Convergence on Culture Technology
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• v.5 no.4
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• pp.379-385
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• 2019

The purpose of this study is to investigate the damage status of wood sleepers on concrete track of urban transit at different locations and to analyze the causes of damages. In addition, the turnout maintenance history during the service period of about 24 years was analyzed in conjunction with the train passing tonnage and that was to compare the current repair history. The most frequent damage components were rail, tie plate, spike and wooden sleeper. And, the damage caused by the defect of the rail fastening system such as spike and tie plate according to the deformation of the wooden sleeper was analyzed as the main type of damage. As a result, the damage of track components of turnout system was on the increase because they are directly affected by the train passing tonnage. The supplementary points of the check sheet for current turnout maintenance were derived and the improvement proposal was suggested based on the research results.

• Journal of the Korea Convergence Society
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• v.12 no.9
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• pp.261-271
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• 2021

Recent accidents in school environment involving violence, and bullying indicate that school safety is exposed to a serious threat to community well-being. Such incidents come as big problem because various policies and programs have widely long been implemented in order to protect the school environment. Thus, it is critical for the local community and goverment to develop measures for prevention. However, some of the incidents are misrepresented because school environment still remains as one of the safest settings. The current study discusses successful case studies of education, policies and projects regarding school violence and safety that are enforced in many other nations. One of the most practical and concrete means of pursuing an improved level of school safety is for the local community to be actively involved in the process. And one of the key factors for the success of international programs was that it was very much an integrative approach involving a joint effort with the local communities, accompanying a strong tie between the school and its surrounding context.

• The Journal of the Korea Contents Association
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• v.13 no.1
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• pp.498-511
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• 2013

It is time to extensively reshuffle domestic film industry, which has grown rapidly in recent years. Above all, a most urgent task for domestic film industry is to train specialized staff by working out a foundation for on-site human resource education. For this, it is necessary to review the existing apprenticeship system-a major educational system for domestic film industry for a long time-and then work out a reasonable substitute which can overcome its limitations and succeed its advantages. In other words, it is necessary to switch a current perpendicular rank system, a basis of apprenticeship system, to a horizontal specialized staff system and then establish an industrial information network with which the current status of on-site human resources can be understood and which can comprehensively manage their career, promotion and wages. In this regard, this study suggested the introduction of workplace learning and mentoring as a new system for on-site human resource education for film industry, in order to work out an educational system that could maintain abundant on-site experience and the sense of emotional tie with fellow workers-the advantages of apprenticeship system-and realize a more systematic and specialized workplace learning.

• Journal of Korean society of Dental Hygiene
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• v.24 no.2
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• pp.121-130
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• 2024

Objectives: This study aimed to develop a virtual reality (VR)-based oral strength training program and apply it to older adults to assess improvements in oral function. Methods: The oral strength training was conducted 12 times over 6 weeks, from late August to early October 2023, at the participants' institution. Each session lasted approximately 60 minutes. Forty-one participants aged 65 and older were randomly assigned to either the intervention or control group. Results: Following the VR-based oral muscle strength training, the O'Leary index decreased by 0.42 (p<0.01), and the Löe & Silness index decreased by 1.11 (p<0.01). Additionally, there was a 1.24 reduction in tongue tie (p<0.01) and a 0.55 increase in salivation (p<0.05). Post hoc comparisons revealed significant differences between the two groups in gingival bacterial film (p<0.001), gingivitis (p<0.001), and tongue plaque (p<0.01). Conclusions: The study found that VR-based oral muscle strength training can improve oral health among older adults. Therefore, the VR-based oral muscle strength training program developed in this study could be beneficial in health promotion programs for the elderly.