• Nuclear Engineering and Technology
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• 제54권4호
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• pp.1261-1270
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• 2022

This study was conducted to investigate the possibility of using gaze entropy to evaluate an operator's situation awareness in an emergency accident situation of a nuclear power plant. Gaze entropy can be an effective measure for evaluating an operator's situation awareness at a nuclear power plant because it can express gaze movement as a single comprehensive number. In order to determine the relationship between situation awareness and gaze entropy for an emergency accident situation of a nuclear power plant, an experiment was conducted to measure situation awareness and gaze entropy using simulators created for emergency accident situations LOCA, SGTR, SLB, and LOV. The experiment was to judge the accident situation of nuclear power plants presented in the simulator. The results showed that situation awareness and Shannon, dwell time, and Markov entropy had a significant negative correlation, while visual attention entropy (VAE) did not show any significant correlation with situation awareness. The results determined that Shannon entropy, dwell time entropy, and Markov entropy could be used as measures to evaluate situation awareness.

• 대한안전경영과학회지
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• 제24권3호
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• pp.1-14
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• 2022

This study is a plan on the way to strengthen the survival ability by increasing the use time of air respirator by applying emergency breathing method in the situation where firefighter has to wait for RIT (Rapid Intervention Teams) because it is impossible to escape by himself or emergency escape during isolation during field activities. The research procedure first drew problems by conducting a survey on fire fighters under the Seoul Fire and Disaster Headquarters, and conducted an experiment to compare normal breathing and emergency breathing with 20 members of the Seoul 119 Special Rescue Team, and suggested emergency breathing method and training process modeling that can be applied to each field situation based on the data obtained. The experiment was conducted over 9 weeks, and it was divided into three categories: field activity situation, movement (emergency escape assumption) situation, and place (assume waiting for RIT). In the field activity situation experiment, it was confirmed that the application of skip breathing method was appropriate and the use time of air respirator increased about 1.6 ~ 1.9 times. In the moving situation or the in-situ situation, wheel breathing method was appropriate and the use time of air respirator increased about 1.6 ~ 2.4 times. However, when conducting intense activities in the field activity situation, it is recommended to use it limitedly because it is difficult to apply the emergency breathing method. If emergency breathing is not clearly learned in the body, it is difficult to use in the field, so I think systematic and continuous training is necessary. This study suggests that the application of emergency breathing method is effective enough to strengthen the survival ability of firefighters in the field.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권4호
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• pp.1049-1065
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• 2023

Recently, with the development of IoT, AI, and mobile terminals, medical information platforms are expanding. The medical information platform can determine a patient's emergency situation, and medical staff can easily access patient information through a mobile terminal. However, in the existing platform, emergency situation decision is delayed, and faster and stronger authentication is required in emergency situations. Therefore, we propose an edge computing-based medical information platform for automatic authentication using patient situations. We design an edge computing-based medical information platform architecture capable of rapid transmission of biometric data of IoT and quick emergency situation decision, and implement the platform data flow in emergency situations. Relying on this platform, we propose the automatic authentication using patient situations. The automatic authentication protects patient information through patient-centered authentication by using the patient's situation as an authentication factor, and enables quick authentication by automatically proceeding with mobile terminal authentication after user authentication in emergencies without user intervention. We compared the proposed platform with existing platforms to show that it can make quick and stable emergency decisions. In addition, comparing the automatic authentication with existing authentication showed that it is fast and protects medical information centered on patient situations in emergency situations.

• 한국정보전자통신기술학회논문지
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• 제3권4호
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• pp.28-34
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• 2010

본 논문은 인체의 생체 신호를 이용하여 응급상황을 예측할 수 있는 의료정보 시스템을 제안한다. 기존의 응급상황 관리를 위한 연구들은 대부분 바디 센서 네트워크를 중심으로 연구되고 있다. 이들 연구의 문제점은 응급상황이 발생한 후에 단순히 응급상황만을 전달하기 때문에 실제 상황이 발생하여 응급조치까지는 시간이 걸리는 응급조치 지연문제를 가지고 있다. 이러한 문제는 환자들에게 심하면 치료 불능상태에서 사망에까지 이르게 할 수 있다. 이러한 문제를 해결 하기위해서는 응급상황이 발생하기 전까지의 사전 응급징후를 파악하여서 신속히 응급조치를 할 수 있도록 응급상황에 대한 예측이 필요하다. 이를 위해서 본 논문은 센서 네트워크 기술, 인터넷 정보검색 기술, 데이터 마이닝 기술 및 의료정보와 개인정보 보호를 위한 보안 기술을 융합하여 응급상황을 예측할 수 있는 의료정보 시스템을 제안하고자 한다.

• 한국수소및신에너지학회논문집
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• 제34권6호
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• pp.722-727
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• 2023

There are various types of hydrogen production methods, but among them, the alkaline water electrolysis method produces hydrogen by electrolyzing water, and unlike other methods, it can produce green hydrogen that does not emit pollutants and greenhouse gases. There are many different potential risk factors inherent in the water electrolysis process. So it is necessary to predict an emergency situation in advance and to safely manage and take countermeasures according to the emergency situation. Korea Gas Safety Corporation (KGS) CODE AH271 stipulates legal matters to secure safety, but it is not detalied. Thus it is necessary to take measures to safely control and manage it according to the situation in which an emergency stop is required. In this study, based on KGS CODE and HAZOP for alkaline water electrolysis facilities, factors that can cause emergency situations were derived and countermeasures were prepared.

• 전기학회논문지
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• 제67권12호
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• pp.1595-1601
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• 2018

The biggest obstacle to the commercialization of small and medium size microgrid (MG) is the reliability and economics of MG operation and maintenance. In this paper, we propose an autonomous operation method that is implemented as an application program installed in the MG operating system in emergency situations. The proposed algorithm consists of four steps of distinction, recognition, determination and control of emergency situations that can occur in MG. A fuzzy-based situation decision algorithm has been proposed to eliminate the barriers of autonomous operation in actual emergency situation such as occurrence of bad data and communication delay. In addition, countermeasures have been suggested for cases where multiple emergency situations have occurred in combination. The proposed algorithm was tested in a 500kW actual microgrid site of a university. Through the test, the validity of the proposed method and its applicability to practical MG operation are verified.

• 한국응급구조학회지
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• 제9권2호
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• pp.89-100
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• 2005

Due to the improvement in life, we, human beings, are living in the more convenient world. However, as society gets complex, it comes to be faced a dangerous situation that needs to request a help due to an unexpected accident. The promptly emergency relief and emergency treatment from this accident, can be said to be extremely important in increasing a rate of resuscitation. This study analyzed on a case study and problems about the Emergency Medical System out of hospital in our country. The contents in the results of a study can be summarized as follows. 1. given the occurrence of medical disputes in a situation of emergency treatment, the regulation in the legal protection 'Will need to be reinforced. 2. in relation to the mobilization of ambulance, the preferentially passage right in ambulance needs to be guaranteed. In general, the preferentially passage right in ambulance is secured, but it will need to be supplemented by improving the education in civic consciousness and the social system. 3. in case of emergency duties in the emergency medical technician, the countermeasure will need to be strengthened in terms of abusive language and violence from a citizen. 4. in terms of emergency duties in the emergency medical technician, aiming to keep safety from a sudden situation, the possession of the protective equipments will need to be completely provided. 5. the limitation of activity will need to be eased by expanding the range of duties in the emergency medical technician within the ambulance, and the opening of duties will need not to be allowed to the similarly job category. 6. it needs to be reinforced the safety of the emergency medical technician from infectious diseases. Aiming at these emergency medical technicians whose service spirit is thoroughgoing, the nation and the local government will need to form all the conditions in which emergency medical technicians can be active passionately.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2005년도 학술발표회(1)
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• pp.478-479
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• 2005

• 한국인터넷방송통신학회논문지
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• 제9권5호
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• pp.101-107
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• 2009

본 논문은 감시카메라 영상으로부터 응급상황을 탐지하는 방법과 응급상황의 정밀 탐색 및 서비스를 위한 이동로봇 추적 시스템 개발에 대하여 기술한다. 건물 곳곳에 설치된 카메라로부터 얻어지는 일련의 영상들을 분석하여 처리함으로써 사람의 행동을 인식할 수 있으며, 이 중 응급상황이 탐지된 경우 준비된 이동로봇을 이용해 응급상황 발생지점의 정밀 탐색이 가능하다. 감시 카메라 영상을 통하여 사람의 행동들을 인식하기 위해서는 인간의 모습이라고 가정되는 영역들을 추적하고 관리해야 한다. 한 영상에서 가우시안 혼합 모델(MOG)을 이용하여 배경과 분리된 관심 영역들을 추출하고, 각 영역들을 외관 모델을 이용하여 지속적으로 추적한다. 그리고 각 영역의 실루엣 정보를 이용한 움직임 누적 영상(MHI)을 생성하여 행동을 모델링하고 신경망을 이용하여 응급 상황을 최종 인식한다. 또한 응급상황에 처한 사람과 이동로봇의 위치정보를 계산해 이동로봇이 사람에게 접근하는 기술을 구현한다.

• International Journal of Contents
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• 제16권1호
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• pp.75-86
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• 2020

As the elderly population is becoming an aging society, the elderly are experiencing many problems. Social security costs for the elderly are increasing and the un-linked social phenomenon is emerging. Thus, the social infrastructure and welfare system established in the past economic growth period are in danger of not functioning properly. People socially isolated or with chronic diseases among the elderly are exposed to various accidents. Thus, an active healthcare management service is imperative. Additionally, in the event of a dangerous situation, the system must have ways to notify guardians (family or medical personnel) regarding appropriate action. Thus, in this paper, we propose the smartphone-based healthcare and emergency response service platform. The proposed service platform aggregates movement of relevant data in real-time using a smartphone. Based on aggregated data, it will always recognize the user's movements and current state using the human motion recognition mechanism. Thus, the proposed service platform provides real-time status monitoring, activity reports, a health calendar, location-based hospital information, emergency situation detection, and cloud messaging server-based efficient notification to several subscribers such as family, guardians, and medical personnel. Through this service, users or guardians can augment the level of care for the elderly through the reports. Also, if an emergency situation is detected, the system immediately informs guardians so as to minimize the risk through immediate response.