• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.10a
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• pp.37-39
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• 2013

현재 우리나라는 보유 또는 지배선박이 약 1,000척, 3천만G/T로 노르웨이에 이어 세계 6위의 해운강국으로 성장하였다. 그리고 수많은 사관과 부원들이 다양한 선박에 승선하고 있으며 해운산업이 성장할수록 더 많은 선원들이 선박에 근무할 것으로 예상된다. 그러나 IMO와 ILO 등에서는 선원들의 선박근무환경 및 휴식 등에 관해서 최소한만을 규정하고 있고, 이로 인하여 선원들이 높은 노동 강도에 시달리게 되고 피로와 스트레스가 누적되어 해양사고의 한 원인이 되고 있는 실정이다. 이 연구에서는 각 선박의 고유 특성과 운항환경 등으로 고려한 선박의 근무강도를 평가할 수 있는 요소와 지수를 개발하기 위하여 선박에 장기간 승선한 경험이 있는 응답자로 하여금 각 평가요소에 대하여 주관적으로 인지하는 선박의 근무강도를 평가하도록 하였다. 이 평가요소와 지수를 기반으로 선원들을 각 선원의 특성과 여건에 맞는 선박에 배정함으로서 선원들의 피로와 스트레스를 경감시켜 해양사고의 예방에 기여할 수 있을 것으로 예상된다.

• Korean Journal of Adult Nursing
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• v.14 no.1
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• pp.125-134
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• 2002

Purpose: The objectives for this study were to identify the factors that correlate with appraisal of illness and to explore what variables are predictive of cancer patients primary caregivers' cognitive appraisal for stress. Method: The subjects were selected by convenient sampling and 130 caregivers who completed a questionnaire. Measures used in this study included the Family Inventory of Resources for Management, Social Support Index, Family Crisis Oriented Personal Evaluation Scales and Family Coping Coherence Index. Pearson correlation was used to identify the relationship among factors and multiple regression was used to determine the individual and cumulative effect of potential predictors on the caregivers' appraisal. Results: Patient's level of activity, severity of the disease, quality of relation between patient and caregiver, caregiver's subjective health status, economic status, family resources and coping were significantly correlated. Among the variables, coping, family resources, economic status and quality of relation between caregiver and patient predicted 49.2 percent of the variance in appraisal of caregivers' stress condition. Conclusion: These findings suggest that coping mechanisms and family resources are important for positive appraisal. Nurses should provide adequate nursing care for the primary caregiver about professional care information and supportive counseling.

• Journal of Korea Entertainment Industry Association
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• v.15 no.1
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• pp.229-236
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• 2021

The purpose of this study is to investigate how the combined intervention of occupation-based intervention and computerized cognitive rehabilitation treatment affects the psychosocial function, cognitive function, and depression of stroke patients. 23 stroke patients were divided into experimental group(n=11) and a control group(n=12), and the experimental group and the control group received CoTras for 4 weeks and 30 minutes each, and additionally the experimental group received task-based intervention for 30 minutes before the start of CoTras. It was conducted 20 times for a total of 4 weeks. Self-efficacy scale, stress scale, depression scale, neurobehavioral cognitive status examination were used. As a result of the study, the experimental group showed significant improvement in improvement of self-efficacy, stress, and depression than the control group, and the experimental group showed a small effect difference in magnitude of effect from the control group in cognitive function. Based on this study, it is possible to utilize the simultaneous task-based intervention with CoTras to improve psychosocial function, depression and cognitive function in stroke patients.

• Journal of the Korean Institute of Landscape Architecture
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• v.43 no.6
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• pp.127-137
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• 2015

Recent research has shown that university students experience severe stress and depleted directed attention due to study, social relationships, and economic dependency. Based on the stress reduction theory and the attention restoration theory, this study aims to investigate the effects of natural landscape on university students' stress and cognitive performance through a wide array of measurements including GSR(galvanic skin responsse), IBI(interbeat interval), ZIPERS(Zucherman Inventory of Personal Reactions), and mental arithmetic test. The restorative effects of natural landscape were compared with those of urban landscape. 128 university students participated in the study, and the data of 120 students was analyzed. The results showed that natural landscape was more restorative in relieving psychological stress and in enhancing cognitive performance than urban landscape, which evidenced the restorative effects of natural landscape. Therefore, it could be proposed that natural landscaping of the university campus contributes to students' stress reduction and cognitive enhancement. But such effects were not found in the two physiological measures(both GSR and IBI). Moreover, it was analyzed that urban landscape had a more beneficial effect than natural landscape for IBI, which might resulted from the participants' characteristics and the study landscape. Specifically, the young age span of the participants(average 23.8 years old) and the very natural setting of the university where they were enrolled might lead to the conflicting results in physiological measures. Also, the urban landscape used in the study had a sense of "scope", which is one of the Kaplan and Kaplan's restorative characteristics. Based on this opinion, it was suggested that future study should investigate the impact of the landscape type and contents as well as the participants' characteristics on the restorative effects of natural landscape.

• Journal of Convergence for Information Technology
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• v.10 no.3
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• pp.163-175
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• 2020

The study was undertaken to identify in relation stress perceived, perceived physical health status and Chewing difficulty with over 60 years elderly people. The subjects of the study were 10,806 subjects who answered to National Health and Nutrition survey for (2016, 2017). The response of 1,195 subjects were used for the final analysis. Analysis conducted using SPSS version 12.0 included Chi-square test to identify stress perceived, perceived physical health status and Chewing difficulty rate according to subject characteristics and multivariate logistic regression analysis to determined independent significance. Stress perceived was correlated with perceived physical health status(p=-0.252^**), and had a negatively correlation, Chewing difficulty(p=-.150^**). Therefore it is necessary to evaluate as a predictor of health risk for the health promotion of the elderly.

• Science of Emotion and Sensibility
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• v.21 no.1
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• pp.71-82
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• 2018

Stress involves changes in behavior, autonomic function and the secretion of hormones. Autonomic nervous system (ANS) contributes to physiological adaptive process in short durations. In particular, heart rate variability (HRV) analysis is commonly used as a quantitative marker depicting the ANS activity related to mental stress. The aim of this study is to investigate correlations between psychological responses to stress and HRV indices induced by the cognitive stressor. Thirty-three participants rated their mental and physical symptoms occurred during the past two weeks on Stress Response Inventory (SRI), which is composed of seven stress factors that may influence the status of mental stress levels. Then, they underwent the psychophysiological procedures, which are collected electrocardiogram (ECG) signals during a cognitive stress task. HRV indices, the standard deviation of R-R interval (SDNN), root mean square of successive R-R interval difference (RMSSD) and low frequency (LF)/high frequency (HF) ratio were extracted from ECG signals. Physiological responses were calculated stress responses by subtracting mean of the baseline from the mean of recovery. Stress factors such as tension, aggression, depression, fatigue, and frustration were positively correlated to HRV indices. In particular, aggression had significant positive correlations to SDNN, RMSSD and LF/HF ratio. Increased aggressive responses to stress correlated with the increases of all HRV indices. This means the increased autonomic coactivation. Additionally, tension, depression, fatigue, and frustration were positively associated with RMSSD reflecting increases in parasympathetic activation. The autonomic coactivation may represent an integrated response to specific cognitive reactions such as the orienting response.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.650-653
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• 2009

Decrease in crew performance is frequently cited as a major causal factor in maritime accidents. Although considerable researches on working hours undertaken by seafarers have been conducted through interviews and record analyses, experimental studies on the effects of factors, such as high workload, shift patterns, stress, sleep deprivation, and disturbance on the cognitive performance of mariners have been limited. Other safety-critical transport industries, such as aviation and rail, have developed fatigue management tools to help managements in the work patterns of their operators. Such tools for mariners would assist shipboard crews, marine pilots, and shore managers for planning and improving work schedules. The overall aim of this paper is to determine a fatigue factor that can be applied to human performance data as a part of a software program that calculates total cognitive performance. This program enables us to establish the levels of cognitive performance in a group of marine pilots in order to test a decision-making task based on radar information. This paper addresses one of the factors that may contribute to the determination of various fatigue factors: the effects of different work patterns on the cognitive performance of a marine pilot.

• Stress
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• v.26 no.4
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• pp.259-267
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• 2018

Background: The purpose of this study was to identify the risk factors influencing cognitive function and life satisfaction in elderly living alone. Methods: It was cross-sectional descriptive study by using secondary data from the 2014 national survey of Korean elderly. The study sample consisted of 2,249 subjects who live alone, aged 65 years old and over. Data were analyzed frequency analysis, ${\chi}^2$-test, t-test, ANOVA and Logistic regression analysis. Results: The risk factors that significantly influenced cognitive function were old age, bereavement, lack of education, no regular exercise and low socio-cultural activity satisfaction. The risk factors that significantly influenced life satisfaction were no bereavement, lack of education, no work, negative evaluation of health status, diagnosis of depression and no regular exercise. Also experience of emotional and economical abuse, neglect of financial support and low cognitive function were identified risk factors of life satisfaction. Conclusions: The elderly living alone with risk factors of cognitive decline should be interested. To prevent or delay cognitive impairment, regular exercise and socio-cultural activities were recommended. It was suggested that the promotion of cognitive function, appropriate work and exercise, and social efforts to prevent abuse and neglect can contribute to improving life satisfaction of elderly living alone.

• Korean Journal of Psychosomatic Medicine
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• v.16 no.1
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• pp.38-46
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• 2008

Objectives : The purpose of this study is to investigate the minor stress in daily life related to undergoing hemodialysis and the relationship between minor stresses, coping skills, and subjective quality of life among the patients with end stage renal disease. Methods : Seventy seven patients on hemodialysis were enrolled in this study. Minor stress was assessed with daily stress inventory-Korean version(K-DSI), ways of coping checklist identified the use of the following coping strategies:problem-focused, seek social support, emotion-focused coping and wishful thinking. Socio-demographic data were obtained and World Health Organization-Quality of Life Scale(brief form) was also administered to subjects. Results : Participants mean age was $55.92{\pm}13.71$ years. The mean of the event, impact and impact/event (I/E) ratio scores of K-DSI were $29.06{\pm}21.57$, $88.69{\pm}75.88$ and $2.92{\pm}1.11$, respectively. These scores were much higher than normative data of K-DSI. Among the 5 categories of this inventory, the scores of cognitive stressors were highest. 5 categories of the inventory showed positive relationship with way of coping subscales, which showed coefficient of correlation between 0.259(p<.01) and 0.495(p<.001). However, no significant correlation was found between minor stress subscales and quality of life. Hemodialysis patients in our study used more emotional-focused coping methods, which was considered as passive way of cope than problem-orientated coping methods. Conclusion : The main findings of this study indicated that patients on hemodialysis showed higher level of perceived minor stress than normal population. The patients treated with hemodialysis tend to use passive way of coping primarily. For assessing the stress in patients on hemodialysis, clinician has to consider both level of perceived minor stress and the ways of coping the patients primarily use.

• Korean Journal of Psychosomatic Medicine
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• v.27 no.2
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• pp.191-201
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• 2019

Objectives : The purpose of this study was to investigate the effects of meaning centered and mindfulness-based stress management program with using marine resources on positive changes in mood, sleep, quality of life and cognitive function. Methods : Nine family caregivers of patients with severe disability experienced meaning centered and mindfulness-based stress management program for four-days in marine areas near Uljin-gun, Gyeongsangbuk-do in South Korea. Subjective questionnaires and objective assessments were conducted and statistically analyzed to examine changes in mood, sleep, quality of life, and cognitive function before, after, and after 6 weeks of participation. Results : After participating in the program, moods including depression improved significantly. This effect lasted until 6 weeks. Participants' sleep quality, quality of life and cognitive function improved significantly after 6 weeks of program participation. Conclusions : This new specialized stress management program using marine resources for family caregivers of patients with severe disability is expected to be used effectively in terms of improving their overall quality of life, mental health status and cognitive efficiency.