• The Journal of the Convergence on Culture Technology
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• v.8 no.3
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• pp.589-594
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• 2022

In an acceleration of 'untact' society during the COVID-19 pandemic, video conferencing platforms have been provided to connect the isolated and to overcome the limit of having interpersonal relationships. While these services brought a great deal of benefits, they also increased the number of people who suffer from additional fatigue from video conferencing. This study, thus, aimed to identify the factors of using video conferencing services and further to examine the relationship between the factors and the users' overall fatigue. Through focus-group interviews and survey, four main factors of fatigue (restriction from untact communication, difficulty of use, background set-ups, discomfort from excessive attention) were identified. This study also found the positive relationships of restriction from untact communication and background set-ups on the users' overall fatigue. The results does not only provide implication on defining new fatigue factors from young generations but also help practitioners and service providers to improve the deficits of services that the real users currently experience.

• Bulletin of the Society of Naval Architects of Korea
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• v.31 no.3
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• pp.77-80
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• 1994

본 고에서는 해양구조물의 피로수명 해석의 불확실성의 요인들을 살펴보고, 간단한 모델을 사용 하여 각 요인들이 피로수명 해석에 미치는 영향을 살펴보고자 한다. 피로수명해석에는 일반적으 로 SN곡선을 이용하는 방법과 파괴역학을 이용하는 방법이 사용되고 있지만 여기서는 SN곡선을 이용하는 방법에 관해서만 논하기로 한다.

• Journal of Digital Contents Society
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• v.19 no.3
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• pp.489-496
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• 2018

This article is to examine the influence of occupational stress, socio-psychological factors and quality of sleep on fatigue symptoms from firefighters in fire service. The correlation coefficients were obtained by a tool of Pearson analysis, and covariance structure analysis was performed on the factors affecting the level of fatigue symptoms. This result suggests that the level of firefighters' fatigue symptoms in fire service. has a causal effect with occupational stress, socio-psychological factors and quality of sleep. Therefore, it is necessary to improve the work environment and to increase organizational support to deal with firefighters' fatigue in fire service.

• Journal of the HCI Society of Korea
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• v.13 no.2
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• pp.21-29
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• 2018

Continuous use of SNS with having SNS fatigue influences users mentally as well as physically. Although it is reported that they eventually leave SNS due to experience of fatigue, the determinants of SNS fatigue have not been discovered yet. Thus this study aims to find the psychological factors causing SNS fatigue. This study (1) found out the factors causing SNS fatigue, and (2) explored the relationships between the factors and intentions to discontinue/continue to use SNS. Findings of the study suggested that there are seven types of determinants: Sense of relative deprivation, Relationship concern, Management burden, Information overload, Privacy concern, Reputation concern(after posting), Reputation concern(before posting). It is also found that sense of relative deprivation negatively predicted the intention to keep using SNS while management burden, reputation concern(before posting) predicted positively. Furthermore, the sense of relative deprivation and information overload positively predicted the intention to discontinue using SNS while reputation concern(before posting) predicted negatively. This research examined how the determinants of SNS fatigue affect the intentions to keep/stop using SNS from the two different points of view. The determinants of SNS fatigue experienced by SNS viewers influenced them to have intentions to stop using it, whereas those felt by SNS writers affected them to keep using it.

• Proceedings of KOSOMES biannual meeting
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• 2004.11a
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• pp.49-56
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• 2004

It has been estimated that up to $80\%$ of all marine accidents have human elements as a cause. t of these, human elements of crew fatigue is main causes of marine accident. Crew fatigue involves sleep, schedule. workload. off-time. alcohol health and stress. With a ship handling simulator, the effect of alcohol on ship operational performance is studied for each 0.05 and $0.08g\%$ blood alcohol concentrations. A main effect for alcohol was found indicating that ship operational performance was significantly impaired by this alcohol relative to performance in the non-alcohol condition. The results of this research can be applied to minimize marine accidents as basic data.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.06a
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• pp.401-403
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• 2013

세계적으로 선박 교통량 증가와 함께 선박 사고 원인의 90% 이상을 차지하는 인적요인에 대한 심층적인 연구의 필요성이 대두되고 있다. 해상교통관제 업무는 고도의 주의와 예측능력을 요구하며 이를 저해하는 인적요인 분석 및 관리 필요성이 절실한 분야이다. 특히 관제업무는 교대근무 등의 불규칙한 근무형태로 인해 발생되는 피로와 업무 집중력 저하, 스트레스가 많은 업무이다. 무엇보다 관제 업무는 해상안전에 핵심적인 역할을 하는데, 관제사의 피로와 스트레스로 인한 업무 차질은 자칫 안전사고로까지 이어질 수 있는 위험이 존재한다. 이렇듯 인적요인이 중요한 영역임에도 불구하고 관제사들의 체계적인 스트레스 관리에 대한 방안은 미비한 실정이다. 본 연구에서는 직무스트레스 유발요인, 유발결과 및 설문조사를 통하여 관제사들의 직무스트레스 현 실태를 파악하고자 한다. 그리고 연구결과를 바탕으로 관제사의 피로, 스트레스를 관리하기 위한 방안과 더 나아가 효율적인 인적요인 안전관리 방안을 모색하고자 한다.

• Proceedings of KOSOMES biannual meeting
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• 2006.05a
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• pp.1-6
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• 2006

해상에서 선박을 운항하는 항해사의 피로도 (Fatigue) 는 안전항해와 매우 밀접한 관계를 가지고 있으며 당직근무 중에 피로가 누적되어 업무수행능력이 저하되면 선박의 충돌 및 좌초 둥과 같은 매우 위험하고 중대한 해양사고를 유발할 가능성이 높아지게 된다. 따라서 본 연구에서는 항해사의 근무환경, 피로유발요인 및 피로증세 등에 대하여 조사하였고, 항해경험자를 대상으로 정신적 육체적인 작업부하도에 대한 피로도 평가관련 설문조사를 실시하고 그 결과를 분석하였다. 그리고 이와 같은 피로도 조사 및 설문조사 분석결과를 바탕으로 항해사의 피로도 평가항목을 선정하고 이를 토대로 항해사의 업무수행능력을 평가하기 위한 피로도 평가모델을 제시하였다.

• Journal of the Korean Society of Marine Environment & Safety
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• v.22 no.2
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• pp.160-166
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• 2016

Crew fatigue has been recognized as a major cause of maritime accidents. Systematic study on crew fatigue has a direct impact on the human factor, but the various measures being taken to prevent human error account for most of the causes of marine accidents situation are still insufficient. In this study, 128 people who have a variety of career and job types boarded the T/S Hanbada were analyzed the changes of fatigue during the 87-days a Maritime Silk Road Sailing Expedition. Crew fatigue was measured by period of time onboard classified as mental, physiological and physical changes through survey responses and individual interviews of nurses. Also, it was identified the fatigue factor through quantitative statistical analysis. As a result of repeated measures analysis of variance for the changes of fatigue in position and gender criteria in accordance with boarded period, the position-specific analysis was that Professor Rating group has appeared to feel more mental and physical fatigue than the student population. Also, the results of fatigability about the sex-specific analysis have been found that women feel more physical fatigue than men.

• Journal of the Korean Society of Marine Environment & Safety
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• v.16 no.2
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• pp.201-207
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• 2010

Recently, about 600 cases of marine accidents occur annually in Korea. According to many studies and analyses on occurrence of marine accidents, 70~80% of marine accidents were caused by human factors. Among the human factors, navigation officers' fatigue is very important factor. Although navigation officers' fatigue serves as an important role in marine accidents, there is no method to exactly examine the degree of officers' fatigue. Accordingly, this study analyzed human factors according to types of marine accidents and extracted important five factors affecting navigation officers' fatigue through the questionnaire survey by means of literatures and 5-point scale. In addition, evaluation factors of marine accident risks caused by fatigue factors were divided and structured by using ISM. Lastly, it found out the importance of each fatigue factor drawn by AHP and decided marine accidents that were most highly caused by navigation officers' fatigue in order. At the result, weights were high as sleep time 0.385, stress 0.302, health condition 0.139, rest time 0.099, alcohol and drug 0.074 in fatigue factors, and death and injury 0.328, collision 0.308, grounding 0.195, sinking 0.094, fire accident 0.075 in evaluation factors of marine accident risks. Therefore, the control plan to lower marine accident risks should be prepared on the basis of high weight factors.

• Journal of Convergence for Information Technology
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• v.8 no.2
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• pp.67-75
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• 2018

We sought to develop a multi-dimensional tool for measuring and understanding nurse fatigue. The participants were 301 nurses working in four hospitals in Seoul, South Korea. Basic items were developed after a preliminary literature review, and content validity was verified by a group of experts. The first 52 items from which the fatigue measurement tool was to be developed were tested for construct validity and were reduced via factor analysis to 31 items. Following a confirmatory factor analysis, the items were further reduced to 23 items in three categories: physical, mental, and emotional. A confirmatory factor analysis found the items to be adequate. The fatigue scale was found to have high construct validity and reliability. This scale is expected to serve as a preliminary data-gathering tool to assess the level of nurse fatigue and to develop interventions to alleviate it.