• Journal of the Korea Safety Management & Science
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• v.19 no.2
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• pp.1-13
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• 2017

In this study, using the synetics technique for strategies by making unfamiliarity into familiarity in the case of 911 terrorism. This study has meaningful messages for citizens and firefighters' illness caused by disaster sites in the field of disaster management in Korea. There are 7 stages to explain cause of a variety of cancers happening to citizens and firefighters in this study. The 7 stages are composed of real situation, direct analogies, personal analogies, symbolic analogies, new direct analogies, and review. This synetics will contribute to providing better ideas for citizens and firefighters' physical and mental health conditions.

• Research in Community and Public Health Nursing
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• v.32 no.3
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• pp.396-403
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• 2021

Purpose: The purpose of this study was to investigate the mediating effect of perceived appraisal support between neuroticism and occupational stress in firefighters. Methods: The subjects of this study were 156 firefighters who worked at three fire stations in G province in Korea. The collected data were analyzed by t-test, ANOVA, and multiple regression analysis using Baron and Kenny's method for mediation. Results: There were significant relationships between neuroticism and perceived appraisal support (r=.30, p<.001), neuroticism and occupational stress (r=.42, p<.001), and perceived appraisal support and occupational stress (r=.36, p<.001). Perceived appraisal support showed partial mediating effects in the relationship between neuroticism and occupational stress. Conclusion: The impact of neuroticism in firefighters was mediated by perceived appraisal support for occupational stress. This suggests that strategies for enhancing perceived appraisal support in fire fighters should be considered when developing neuroticism management interventions for decreasing their occupational stress.

• The Korean Journal of Emergency Medical Services
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• v.25 no.1
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• pp.37-48
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• 2021

Purpose: The purpose of this study was to identify the degree of resilience, traumatic events, secondary traumatic stress, and calling reported by firefighters and to identify the factors affecting the resilience of firefighters. Methods: Data were collected using structured questionnaires and 200 fire officials working in D city were enrolled as the subjects. Data were analyzed using SPSS 24.0, and the analyses included descriptive statistics, independent t-test, ANOVA, Scheffé test, Pearson correlation coefficient, and multiple linear regression. Results: The difference in resilience according to general characteristics showed significant differences in health status (F=4.33, p=.014) and job satisfaction (F=6.13, p=.003). The factors affecting resilience were identified as calling (β=.25, p<.001), and the explanatory power for resilience was 19.2%. Conclusion: It is necessary to increase calling in order to increase resilience. Therefore, we suggest that professional education and programs that consider personal characteristics are needed to strengthen the calling.

• Journal of Institute of Control, Robotics and Systems
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• v.13 no.2
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• pp.128-132
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• 2007

Thermal Imaging systems are reported to be crucial for fire fighting and beginning to be used by fire fighters. The performance of thermal imaging system is determined by both the radiation of infrared from the target and the attenuation of infrared signal in the optical path by the absorption, scattering, diffraction and reflection. In the scene of fire, water drops with various sizes such as vaporized water, wafer mist from sprinkler, and wafer to suppress the fire reside with various gas generated by burning. To measure the transmission of infrared radiation in the scene of fire, fire simulating system and thermal imagers with cooled detector which detects $3{\sim}5{\mu}m$ infrared and uncooled detector fabricated by the MEMS technology which detects $8{\sim}12{\mu}m$ infrared. are made. With thermal imagers and Ire simulating system, the change of thermal image with respect to the change of visibility controlled with the burned fas was measured. It was found that the transmission of infrared was not reduced by the burned gas, which could be explained by the long wavelength of infrared ray compared with visible ray. However, the transmission of infrared ray was largely reduced by the combination of burned gas and water mist supplied by sprinkler. This is contrary to the results of calculated transmission through the pure water mist and shows that the transmission of infrared ray is mostly affected by the compounds of water mist and burned gas. In this case, it was found that the uncooled detector which detects $8{\sim}12{\mu}m$ infrared ray is better than cooled detector which detects $3{\sim}5{\mu}m$ infrared ray for fire fighting.

• Journal of the Society of Disaster Information
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• v.8 no.1
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• pp.47-55
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• 2012

There are currently various domestic high-rise construction projects underway. Such projects may maximize the economic impact, and yield other benefits, however, there is also a possibility of fire, terrorism, and other disasters that one may not even imagine. This study of high-rise structures' damage reduction measures the fire-fighting ability of the fire fighters at the scene of an indoor emergency upon entry. In order to identify the practical limitations, the fire fighter entered from the 1st floor to reach the top 54th floor. 1.Time required to reach the top floor without the respirator 2.Time required as well as pressure consumption to reach the top floor with the respirator equipped was measured; based on the results, performable range of operations during a fire fighting activity were presented.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.8
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• pp.1581-1586
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• 2016

In this paper, we propose a central disaster monitoring system of the forest fire. This system provides the safe-zone and detection to reduce the suppression efforts. In existing system, it has a few providing the predicting of wildfire spread model and speed through topography, weather, fuel factor. This paper focus on the forest fire diffusion model and predictions of the path identified to ensure the safe zone. Also we have considering the forest fire of moving direction and speed for fire suppression and monitering. The proposed algorithm could provide the technique to analyze the attribute information that temperature, wind, smoke measured over time. This proposed central observing monitoring system could provide the moving direction of spred out forecast wildfire. This observing and monitering system analyze and simulation for the moving speed and direction forest fire, it could be able to predict and training the forest fire fighters in a given environment.

• Fire Science and Engineering
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• v.29 no.6
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• pp.109-118
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• 2015

Recently, three kinds of search robot prototypes were developed to assume the role of fire fighters for search and rescue missions in special disaster areas with high heat, smoke, toxic gases, or radioactivity. To accomplish search missions, these robots should be able to endure heat, overcome various obstacles, suppress fires, and see through dense smoke. This study investigated the heat resistance, practicality, and fire fighting capacity of these robots. The results show that the small and middle-sized robots were resistant to surrounding temperatures of $100{\sim}200^{\circ}C$, and the fire-fighter-riding robot could endure up to $500^{\circ}C$ for half an hour. The fire-fighter-riding robot showed excellent extinguishing performance on an A-10 class fire model, which was extinguished within 3 min. The robots also showed various capacities for overcoming obstacles and are expected to play an active role in various special disaster areas.

• Fire Science and Engineering
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• v.28 no.5
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• pp.30-36
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• 2014

The pressurized smoke control system in the vestibule is important for fire safety in buildings because it is concerned with egress time of people and the safety of fire fighters. The vestibule pressurization system can prevent smoke from entering the vestibule using differential pressure when fire doors are closed and using the egress velocity when fire doors are open. Air supplying units in the vestibule need to be arranged by taking account of the location of doors and the volume of the vestibule in order to assure the uniform air egress velocity through a fire door when it is open. In this study, computational fluid dynamics (CFD) simulations were conducted for the vestibule where multiple doors are installed and it was found that the reverse flow occurs when the damper position in vestibule is not appropriate.

• Korean Journal of Occupational Health Nursing
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• v.20 no.2
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• pp.153-162
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• 2011

Purpose: The purpose of this study is to investigate the impact of job stress, self-efficacy and empowerment of 119 Emergency medical technicians in Jeollanam-do. Methods: This study used the data collected from 346 respondents working for first aid in a fire station. To answer research questions, this study employed frequency analysis, reliability test, F (t)-test, ANOVA, Scheffe' post-hoc test, and multiple-regression analysis. Results: In terms of demographic characteristics, marital status and age had significant impact on job stress, but sex and education did not. In terms of job characteristics, first placement, rank, and tenure made significant difference on job stress, whereas certificate, department, and area did not. These results address that general characteristics, self-efficacy and job stress are critical variables on empowerment. Conclusion: From the research findings, it is concluded that fire fighters' job stress can be reduced if professional development programs are given to them, which is likely to provide better public services such as first aids and welfare, as well as to increase job satisfaction.

• Fire Science and Engineering
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• v.26 no.2
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• pp.17-31
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• 2012

Regarding the landslide that took place around 00:08 on July 27, 2011, in a village in the city of Chuncheon (Sanjidanggol, Majeoksan, Cheonjeon-ri, Sinbuk-eup, Chuncheon-city, Gangwon-province), this paper surveyed fire-fighting officers who were injected into the site to rescue the disaster, thereby determining the problems surrounding the initial fire-fighting response and improvement measures. As a result, specialist education of volunteer fire-fighters and utilization, improvement measures included the early response ability enhancement of and cooperation between relevant agencies, the strengthening of specialist education about landslide response, the strengthening of situation management and field command system, the installation and operation of speedy field emergency infirmary, the operation of an appropriate volunteer waiting facility, the operation of an appropriate control lines, appropriate control of media, a sufficient securing of individuals' rescue equipment and fuel for heavy equipment, the provision of sufficient portable radios and chargers, the securing of fire-fighting budget thereof.