• Journal of the Korean Institute of Gas
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• v.27 no.4
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• pp.110-115
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• 2023

According to the Off-Gas Generation and Use Status Report (2015), Off-gas from the steel industry is estimated to be 80 million tons per year in Korea. If this is purified, large amounts of hydrogen can be produced, so active research and development related to hydrogen purification facilities is underway. In this study, a quantitative risk assessment (QRA) was conducted by analyzing the components of a off-gas based hydrogen purification facility and investigating risk factors. The risk analysis results were determined to be at an acceptable level and will be used as basic data to improve the safety of facilities considering the risks of hydrogen.

• Journal of Advanced Navigation Technology
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• v.28 no.3
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• pp.323-330
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• 2024

The purpose of this study is to analyze the effect of self-esteem on the safety culture and safety behavior of airline pilots and to confirm whether job satisfaction has a mediating effect in these relationships. It was examined whether self-esteem directly affects safety culture and safety behavior, and indirectly through job satisfaction. As a result of the study, self-esteem did not have a direct significant effect on safety culture, but indirectly had a positive effect through job satisfaction. In addition, self-esteem had a direct significant positive effect on safety behavior, and job satisfaction partially mediated this relationship. This suggests that pilots with higher self-esteem practice safety behavior more actively, and job satisfaction can promote such behavior. These results show the importance of organizational support such as programs and support for enhancing pilots' self-esteem, fair compensation for improving job satisfaction, improving working environment, and providing career development opportunities in airlines, and are intended to be used as basic data for this.

• Journal of the Korea Convergence Society
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• v.10 no.3
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• pp.363-371
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• 2019

The purpose of this study is to investigate elementary school students' safety knowledge, safety attitude and safety practice behavior to analyze the relations between them, and to find the factors influencing their safety practice behavior. The study method was conducted by using SPSS/SIN 21.0 program of 468 questionnaire surveyed from March. 1 to March. 15, 2018 in S city. As a result, elementary school students' safety knowledge scored 23.21; attitude 3.58 points; safety practice behavior 2.92 points. Safety knowledge has positive correlation with safety attitude and safety practice behavior. Safety attitude, knowledge to be the factors influencing their safety practice behavior. These influential factors explained their safety practice behavior 23.3%. It is necessary for the educational institutions to develop and utilize the practice-oriented fusion education continuously to improve safety attitude and safety knowledge.

• Journal of Convergence for Information Technology
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• v.12 no.1
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• pp.76-82
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• 2022

Recently, natural and social disasters in Korea are increasing, and new disasters such as COVID 19 and sinkholes, and large-scale disasters that combine natural and social disasters are occurring frequently. In order to reduce damage caused by disasters and effectively respond to disasters, the importance of disaster safety education is emerging because it is necessary to understand the awareness of disaster situations and the functional response process. Ministry of Public Interior and Security is providing disaster safety education for emergency managers through 54 specialized disaster safety education institutions. There is also a lack of experience facilities. This has a problem in that it makes it difficult for disaster safety personnel to effectively respond to disasters due to lack of experience in actual disaster sites. Also, unlike other education fields, the connection between disaster safety education contents and new technologies such as AI is still lacking. In this study, focusing on natural disaster, the current status and problems of domestic disaster safety education institutions and their contents are investigated and analyzed, and based on this, this study suggested improvement plans for domestic disaster safety education contents such as establishment of a unified disaster safety standard curriculum, production and distribution of disaster safety education experience contents using virtual reality technology and infotainment technology, and development of mobile AI tutoring service.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2005.04a
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• pp.283-290
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• 2005

제철용 고로구조물의 안전성 위협 요인으로는, 고로자중이나 철광석 낙하 둥과 같은 기계하중 외에도 구조물 내부 온도가 최대 $1700^{\circ}C$에 이르는 고온 환경을 들 수 있다. 이러한 고온의 작업 환경은 고로 구성부재들의 크립손상, 열피로 문제 등을 야기시키기 때문에 이들 고열에 의한 영향평가는 고로의 안전성 평가에 있어 필수요소로 거론되고 있다. 일반적으로 고로의 단면을 구성하고 있는 내화재, 냉각판, 철피 등의 냉각시스템을 거치면서 내부의 고온 환경은 고로 외피에 이르는 동안 온도강하가 이루어진다. 급격한 온도강하는 나타나지 않지만 장기간 고로 가동에 있어 상시하중으로 작용하는 이 열원에 의해 고로 각 구부위에는 열응력이 발생하고 이 열응력과 나머지 기계적 하중의 조합에 의해 크립이나 열피로 등과 같이 고로 구조물 안전성 위해요인들이 발생한다고 분석되어 진다. 따라서 본 연구에서는, 고로 안전성 평가를 위한 첫 번째 단계로서 범용유한요소해석 프로그램인 ANSYS를 이용한 열응력 해석을 수행하여 잠재적인 안전성 위해요인으로 알려진 열응력 발생 특성을 분석하고, 고로 건전설계 및 보수 유지 관리지침으로 활용할 수 있는 기반기술을 개발한다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.15 no.4
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• pp.33-41
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• 2015

With rapid rise of virtualization technology from diverse types of cloud computing service, security problems such as data safety and reliability are the issues at stake. Since damage in virtualization layer of cloud service can cause damage on all host (user) tasks, Hypervisor that provides an environment for multiple virtual operating systems can be a target of attackers. This paper propose a security structure for protecting Hypervisor from hacking and malware infection.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2019.11a
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• pp.71-72
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• 2019

최근 공공안전 분야에서는 국민의 위험상황을 분석하여 선제적으로 예측을 하여 국민의 안전을 보장하기 위한 요구사항이 대두대고 있다. 또한 스마트폰 및 스마트워치와 같은 고성능 모바일 단말 기기들의 대중화로 인해 해당 기기들에 부착된 다양한 센서 데이터들을 융복합하여 분석할 경우, 수집한 센서 데이터의 잠재적 가치를 안전보장 측면에서 사용할 수 있는 장점이 있다. 본 논문에서는 대인, 대물, 장소에 해당하는 로그 데이터들을 융복합 분석하여 보호대상자의 안전을 지원하는 다중로그 플랫폼 기반 이동경로 분석 기법을 제안한다. 다중로그 플랫폼에서 수집하는 보호대상자의 이동 경로 궤적을 활용하여 과거에 축적된 이동경로 패턴과 비교를 통해 현재 경로가 평소에 이용하던 경로와의 유사도를 추천하게 된다. 해당 이동 경로 분석 시스템은 위치기반 멀티모달 센서 데이터를 융복합 하여 보호대상자의 안전을 보장하는데 기여 할 것으로 예상된다.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2003.10a
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• pp.335-338
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• 2003

최근의 통계에 따르면 국내의 인터넷 인용율은 2000년도에 44.7%, 2001년도에 56.6%, 2002년도에는 55.2%로 아이슬랜드(60.8%), 스웨덴(57.3%)에 이어 세계에서 세번째로 높은 것으로 나타났다. 또한 인구 100명당 PC보급율 또한 미국(62.5대), 덴마크(57.68대)에 이어 한국(55.58대)이 세계3위를 기록해 명실상부한 정보화 선진국임이 입증되고 있다. 따라서 잘 발달된 infrastructure을 이용하는 기술개발은 초고속정보이용을 가능케하고 있다. 근래에 들어 인터넷을 기반으로 기본적인 활용인 문자, 음성 및 영상 전송 등의 데이터 전송뿐만 아니라, 근래에는 인터넷을 통한 remote control 및 monitoring system에 대한 연구가 활발히 진행되고 있다. 기존의 증류공정은 DCS(Dispersion Control System)로써 공정상태(온도, 압력, 유량, 레벨, 순도등)를 Control room까지 선로를 통하여 신호전달이 이루어지고 있다. 따라서, 제한된 지역에서만 I/O(Input/output)이 이루어지고 있다. 이로 인해 안전감시시스템의 효율성이 떨어지고 있는 게 사실이다. 본 연구에서는 PC기반의 프로그램을 바탕으로 인터넷을 이용한 remote control 및 monitoring system을 개발함으로써 close Network에서 Open Network으로 발전시켰다. 여기서 local plant의 안전시스템 알고리즘은 그대로 Server system에 도입하였으며 사용자의 실정에 맞게 손쉽게 설정을 할 수 있도록 확장성을 높였다. 이는 PC기반의 시스템을 구축함으로써 가능하게 된 것이다. 또한, 웹 상에서의 무차별적 접근으로부터 보호하기 위하여 감시 대상의 성질에 따라 프로그램상에서 차별적 접근형식을 택할 수 있으며, control room의 indicator들과 controller를 프로그램상에 그대로 이식시킴으로써 감시자에게 충분한 정보제공 및 원격제어가 가능하도록 하고있다.

• KIISE Transactions on Computing Practices
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• v.23 no.4
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• pp.232-237
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• 2017

The Maritime Cloud is a technology that enables the seamless exchange of information between several communication links in the maritime domain. Although research on The Maritime Cloud security is still at an early stage, furthering this knowledge is vital to securing the marine environment. In this paper, we propose a method for secure data transmission through The Maritime Cloud domain. The proposed technique, based on the "secret sharing" scheme, is delivered through specifically-dedicated geocasting software. Thus, only authorized vessels can restore the original information. The proposed method is safe from so-called "sniffing" and "man-in-the-middle" attacks.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.10 no.8
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• pp.1435-1442
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• 2006

The ideal method of safety evaluation is to verify results of execution against all possible operations within operating system, but it is impossible. However, the formal method can theoretically prove the safety on actual logic of operating system. Therefore we explain the contents of the art of the safety verification of security kernel, and make a comparative study of various standardized formal verification tools. And then we assigned PVS(Prototype Verification system) of SRI(Stanford Research Institute) to verify the safety of a modified BLP(Bell & LaPadula) model, the core access control model of multi-lavel based security kernel. Finally, we describe formal specification of the revised BLP model using the PVS, and evaluate the safety of the model by inspecting the specification of the PVS.