• Journal of Korean Institute of Fire Investigation
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• v.10 no.1
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• pp.29-35
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• 2007

가스보일러의 확대 보급으로 2006년도 932만대가 주택, 상가 및 산업현장 등에 보급되어 생활의 편리성이 높아지고 있으나 가스보일러의 설치불량, 관리소홀 및 제품의 노후 등으로 사고가 끊이지 않고 발생하고 있다. 가스보일러가 연소 중에 발생하는 배기가스가 실내에 유출되어 최근 5년간 30건의 사고로 사상자가 92명이 발생하는 등 1건의 사고로 3명이상의 높은 인명 피해를 나타냈다. 본 연구에서는 가스보일러의 사고통계분석과 2건의 사고사례를 분석한 결과 가스보일러의 제품의 안전성 향상과 실내에 배기가스가 누출되었을 때 신속히 검지할 수 있는 경보시스템의 방안이 필요할 것으로 보인다.

• Journal of Educational Research in Mathematics
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• v.17 no.1
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• pp.67-90
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• 2007

The purpose of this study is to understand students' thinking process in the algebra problem solving, on the base of the works of Vinner(1997a, 1997b). Thus, two middle school students were evaluated in this case study to examine how they think to solve algebra word problems. The following question was considered to analyze the thinking process from the similarity-based perspective by focusing on the process of solving algebra word problems; What is the relationship between similarity and the characteristics of thinking process at the time of successful and unsuccessful problem solving? The following results were obtained by analyzing the success or failure in problem solving based on the characteristics of thinking process and similarity composition. Successful problem solving can be based on pseudo-analytical thought and analytical thought. The former is the rule applied in the process of applying closed formulas that is constructed structural similarity not related with the situations described in the text. The latter means that control and correction occurred in all stages of problem solution. The knowledge needed for solutions was applied with the formulation of open-end formulas that is constructed structural similarity in which memory and modification with the related principles or concepts. In conclusion, the student's perception on the principles involved in a solution is very important in solving algebraic word problems.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2011.11a
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• pp.63-65
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• 2011

부산신항은 지형적인 특성상 마산 방면에서 입출항하는 선박과 신항으로 입출항하는 선박이 서로 교차하는 경우가 빈번하고 대형 컨테이너선과 저속 예부선 등의 통항량이 많을 뿐만 아니라 년 중 안개일수도 많아 충돌사고 위험이 상존한다. 따라서 선박에 정보제공 정도만 하는 소극적 관제 보다는 선박의 이동에 개입하는 적극적인 관제가 사고 방지에 더욱 효과적이라 할 수 있다. 부산신항의 관제 자료 및 해양안전심판원의 재결사례 등을 통하여 충돌사고의 원인을 분석하는 과정에서 적극적 관제의 필요성을 확인할 수 있었다. 본고에서는 부산신항에서의 적극적 관제 사례와 문제점을 주로 법률적인 측면에서 살펴보고, 적극적 관제의 개선 방안을 도출하여 보았다.

• 정보보호뉴스
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• s.124
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• pp.12-18
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• 2008

지난 2008년 1월초 KISA 인터넷침해사고대응지원센터가 '2007년 침해사고 동향 및 2008년 전망'에 대한 분석보고서를 내놓았다. 침해사고에 대한 축적된 사고사례들을 토대로 분석된 침해사고 동향과 전망이라는 점에서 이번 보고서는 다가올 위협에 대비해야 하는 정보보호 관계자에게는 유용한 참고자료가 될 것이다. 2007년 한해 우리 IT 환경을 괴롭혔던 침해사고 유형은 무엇이었고, 향후 우리가 대비해야 할 문제들은 무엇인지 주요 요소들을 중심으로 살펴보고자 한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.06a
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• pp.385-387
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• 2013

기존의 해양사고 데이터에 기반한 해양안전관리체제에서 준해양사고 중심의 데이터 분석을 통하여 보다 선제적인 해양사고 예방시스템 구축에 대하여 고찰하는 한편, 인천VTS의 사례로 준해양사고 데이터 기반의 해양안전관리체제를 살펴보고, 그 중심에서 VTS의 기능을 확장할 수 있는 방안에 대하여 총체적으로 연구함

• Journal of Korea Ship Safrty Technology Authority
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• s.38
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• pp.57-68
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• 2015

본 연구에서는 2009년부터 5년간의 해양사고 유형별 원인분석을 통하여 사고의 주요 원인에 대해 분석하였고, 국내외 해양안정정보 사례에 대한 분석 및 국내 항해환경정보 제공 활용의 문제점과 국외 사례로부터의 시사점 도출을 통하여, 사고저감에 대한 대책으로 항해환경에 대한 정보의 통합 필요성, 이용자 정보중심의 정보제공의 필요성 등을 제안하였으며, 항해관련 안전정보들의 통합을 통한 이용자 중심의 배분을 위한 가칭 '통합 항해환경 정보제공시스템'을 제안하였다.

• Journal of the Korean Institute of Gas
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• v.14 no.6
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• pp.51-56
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• 2010

Records of accidents for buried pipeline across the river were gathered and causes were analysed. The results are intended to be utilized as basic data for determining a reasonable criteria for the depth of buried city gas pipeline crossing the river. Accident of river-crossing buried pipeline was mainly caused by flood. Sometimes corrosion was detected at the failed location of the pipe. In order to determine reasonable and efficient depth of burial of the pipeline, hydraulic evaluation of the river and structural analysis of the pipeline are necessary. Published data for the buried natural gas pipeline incidents were also investigated and summarized. Main causes of buried natural gas pipeline incidents were external interference and corrosion. However, the two main causes of incidents showed significant difference in the proportion of the entire incident, depending on burial environment.

• Journal of the Korean Institute of Gas
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• v.10 no.4 s.33
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• pp.47-51
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• 2006

Safety issues for LNG(Liquified Natural Gas) terminal or LNG tank involve various concerns such as production/transportation at cryogenic temperature of $-160^{\circ}C$, large volume of handling, flammability and explosion risk. Hence, in designing an LNG terminal rigid safety criteria and mandatory requirements are unavoidable. Since known cases of LNG related accident are very few, careful study and root cause analysis of them are very important and provide precious information to increase safety level of the LNG terminal. In this paper most key accident cases were gathered and analysed to understand fundamental safety issues of LNG terminal to prevent further accident.

• Journal of agricultural medicine and community health
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• v.43 no.3
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• pp.158-171
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• 2018

This TSIG analysis regarding national actions for marine oil spills could be indicated and suggested improvements in the response system could be made based on the present study.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.3
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• pp.488-496
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• 2020

This study was based on nitrate chemical accidents at home and abroad. Toxic gases due to adverse reactions are generated in the workplace, laboratory, hospital, container damage, and chemical misinjection. Through a case review of possible situations and safety, this study analyzed various cases of accidents, accident status, accident type, cause of the accident, location of the accidents, etc. from 2014 to 2018. The plans for improvement in education and nitrate accidents were reviewed. As a result, 36 nitrate chemical accidents were investigated, including 16 careless worker accidents, eight transportation accidents, and 12 facilities shortages. Nitrate chemical accidents are occurring continuously. Based on this, the range of toxic effects using CARIS was calculated at the worst-case scenario, and the effective response range was measured through the damage impact range. For this purpose, the impact range was predicted based on the strengthening of safety education, emergency action plan and correlation, and the quantified data was identified. In addition, the reliability of the scope of impact was reviewed based on the correlation formula that could facilitate the evacuation of residents, and it was applied to actual accident scenarios of the workplace to present the effects of the accident response and preventive measures.