• Safety and Health at Work
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• 제13권4호
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• pp.394-400
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• 2022

Background: Impacts of exposure are generally monitored and recorded after injuries or illness occur. Yet, absence of conventional after-the-effect impacts (i.e., lagging indicators), tend to focus on physical health and injuries, and fail to inform if workers are not exposed to safety and health hazards. In contrast to lagging indicators, leading indicators are proactive, preventive, and predictive indexes that offer insights how effective safety and health. The present study is to validate an extended Voluntary Protection Programs (VPP) that consists of six leading indicators. Methods: Questionnaires were distributed to 13 organizations (response rate = 93.1%, 1,439 responses) in Taiwan. Cronbach α, multiple linear regression and canonical correlation were used to test the reliability of the extended Voluntary Protection Programs (VPP) which consists of six leading indicators (safe climate, transformational leadership, organizational justice, organizational support, hazard prevention and control, and training). Criteria-related validation strategy was applied to examine relationships of six leading indicators with six criteria (perceived health, burnout, depression, job satisfaction, job performance, and life satisfaction). Results: The results showed that the Cronbach's α of six leading indicators ranged from 0.87 to 0.92. The canonical correlation analysis indicated a positive correlation between the six leading indicators and criteria (1st canonical function: correlation = 0.647, square correlation = 0.419, p < 0.001). Conclusions: The present study validates the extended VPP framework that focuses on promoting safety and physical and mental health. Results further provides applications of the extended VPP framework to promote workers' safety and health.

• 국제초고층학회논문집
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• 제10권4호
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• pp.345-364
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• 2021

Developments in the understanding of fire behaviour for large open-plan spaces typical of tall buildings have been greatly outpaced by the rate at which these buildings are being constructed and their characteristics changed. Numerous high-profile fire-induced failures have highlighted the inadequacy of existing tools and standards for fire engineering when applied to highly-optimised modern tall buildings. With the continued increase in height and complexity of tall buildings, the risk to the occupants from fire-induced structural collapse increases, thus understanding the performance of complex structural systems under fire exposure is imperative. Therefore, an accurate representation of the design fire for open-plan compartments is required for the purposes of design. This will allow for knowledge-driven, quantifiable factors of safety to be used in the design of highly optimised modern tall buildings. In this paper, we review the state-of-the-art experimental research on large open-plan compartment fires from the past three decades. We have assimilated results collected from 37 large-scale compartment fire experiments of the open-plan type conducted from 1993 to 2019, covering a range of compartment and fuel characteristics. Spatial and temporal distributions of the heat fluxes imposed on compartment ceilings are estimated from the data. The complexity of the compartment fire dynamics is highlighted by the large differences in the data collected, which currently complicates the development of engineering tools based on physical models. Despite the large variability, this analysis shows that the orders of magnitude of the thermal exposure are defined by the ratio of flame spread and burnout front velocities (V_S / V_BO), which enables the grouping of open-plan compartment fires into three distinct modes of fire spread. Each mode is found to exhibit a characteristic order of magnitude and temporal distribution of thermal exposure. The results show that the magnitude of the thermal exposure for each mode are not consistent with existing performance-based design models, nevertheless, our analysis offers a new pathway for defining thermal exposure from realistic fire scenarios in large open-plan compartments.

• 한국응급구조학회지
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• 제13권1호
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• pp.35-48
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• 2009

Purpose: Firefighters were subjected to be exposed to 24-hour shiftwork and high level of job stress, but there is little study of fire fighters about between Job Stress and Psychological stress in Korea. This study was performed to evaluate job stress of fire fighters grouped by different job types and analyze the health effect of job stress by using a PWI-SF(Psycho-social Well-being Index, Short Form). Methods : This study was to measure the degree of job stress and socio-psychological stress of firefighters working at 119 safety center and analyze the relationship between job stress and mental health, through self-administered questionnaire survey on 918 fire fighters working at fire department located in Korea, during October in 2008. Question items of the questionnaire consist of general characteristics, job stress, and socio-psychological stress. Job Stress Measurement Scale for Koreans was used to measure job stress, while PWI-SF used for socio-psychological stress. Collected data was analyzed through frequency analysis, ${\chi}^2$ test, one-way ANOVA, correlation analysis, multi-regression analysis using a statistic program, SPSS/10.0 Ver for Windows, and statistical significance level was 0.05. Result : Accordingly, this paper is written for the purpose of scrutinizing the reason of 119 rescuers' job stress and Socio-Psychological stress. This thesis tries to analyze a problem and provide contents through many variables concerned and theoretical investigation with the actual research of questionnaire. The results of the study are summarized as follows : Fire fighters feel relatively high stressful in their performance. Job stress, organizational commitment and burnout did not have been influence upon by individual cases such as economic condition, regular exercise etc. Finally, as a result of step by step regression analysis, the variable that can explain Socio-Psychological stress the best was negative emotion scale(NE). Conclusions : It is necessary to conduct repeated studies in the future, since the study implied that there was a contrary relationship between job stress and socio-psychological stress. In order to reduce job stress and maintain better mental health, it is more important than anything else to help firefighters have willingness and efforts to sustain a healthy life, so the development of various programs and education to raise their awareness should be implemented.

• 한국재난정보학회 논문집
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• 제17권1호
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• pp.184-193
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• 2021

연구목적: 본 연구에서는 CCFL유도등의 동작원리가 일반 조명기기와 동일하여 일반 조명기기의 램프 안정기 성능인증 기준인 KS기준에서 광원의 특성에 영향을 줄 수 있는 시험항목을 도출하여 CCFL유도등의 특성을 분석하였다. 또한 CCFL광원의 전기적 특성과 온도 특성의 연관성을 분석하여 광원 수명에 미치는 영향을 고찰하였다. 연구방법: 실험에 사용된 시료는 대형, 중형, 소형 등 각 크기별 2개 제조사의 제품을 대상으로 수행하였으며, 시험 항목은 역률, 파고율, 전류 고조파함유율이다. 연구결과: 역률은 모든 시료가 0.4~0.6사이의 값을 나타내어 KS기준에서 정한 0.9이상 보다 작은 값을 보였다. 파고율은 대형의 경우 3.6~3.7 정도의 값을 나타냈으며, 중형은 4.4~4.7, 소형은 3.5~3.7사이의 값을 나타내었다. KS기준인 1.7이하보다는 2배 이상의 높은 값을 나타냈다. 전류 고조파함유율은 81%~110%의 값을 나타냈으며, KS기준이 20% 이하임을 감안할 때 모든 시료가 KS기준을 상당히 넘어서는 값을 가짐을 확인할 수 있었다. 결론: 파고율과 전류 고조파함유율은 광원의 온도상승과 기기의 소손 등에 영향을 미칠 가능성이 있는 성분이므로 이런 전기적 특성을 KS기준의 범위 안에서 유도등을 개발한다면 유도등의 품질개선과 유지관리에 큰 도움이 되리라 생각된다.

• 서비스연구
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• 제12권3호
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• pp.26-44
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• 2022

업무 중 경험하게 되는 직무스트레스는 성과 향상 등 조직에 긍정적인 영향을 미치는 반면, 적절히 관리되지 않으면 소화기 질환 등 다양한 신체 질병을 유발하고 우울증, 신경 질환 등 정신 질환을 일으키기도 한다. 특히 환자의 건강과 밀접히 관련된 일을 하는 의료기관 종사자는 타 직업군 근로자에 비해 직무스트레스의 정도가 높기 때문에 그 위험성이 더욱 크다. 직무스트레스가 오랫동안 지속되면 정서적 소진과 우울을 유발하게 되는데 이는 개인과 조직에 상당한 악영향을 미치기 때문에 반드시 올바른 관리를 통해 스트레스를 감소시켜야 한다. 이에 본 연구에서는 의료기관 종사자의 직무스트레스, 정서적 소진과 우울의 관계에서 정서적 소진의 매개효과를 알아보고자 자가 보고식 설문 조사법을 이용하여 서술적 조사 연구를 실시하였다. 총 298부의 유효 설문지를 통계분석 자료로 이용하였으며, 수집된 자료는 코딩 과정을 거쳐 IBM SPSS statistics version 25 및 AMOS 20.0 프로그램을 이용하여 분석하였다. 분석 결과, 의료기관 종사자의 직무스트레스가 정서적 소진과 우울에 일부 유의한 정(+)의 영향을 미치는 것으로 나타났으며 의료기관 종사자의 정서적 소진이 우울에 일부 유의한 정(+)의 영향을 미치는 것으로 나타났다. 본 연구를 통해 의료기관 종사자의 직무스트레스와 정서적 소진, 우울 간에 유의한 관련성이 있다는 사실을 알 수 있었으며, 직무스트레스와 우울의 관계에서 정서적 소진이 매개변수로서 작용한다는 것을 알 수 있었다. 의료기관 종사자의 직무스트레스는 근로자의 정신건강과 신체 건강을 위협하고 의료서비스의 질적 저하를 유발하는 등 조직적 측면의 악영향 등을 일으킨다는 점을 미루어 볼 때 의료기관 종사자의 직무스트레스를 해소하고 적절히 관리할 수 있도록 조직적 측면에서의 노력이 필요할 것이다.