• Journal of the Korea Institute of Construction Safety
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• v.6 no.1
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• pp.27-32
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• 2024

In this study, based on accident cases of manned and unmanned tower cranes, the types and causes of accidents were analyzed and tower crane accident prevention measures were proposed accordingly. As a result, 'lack of communication' was commonly analyzed as the biggest cause of accidents. Therefore, in this study, we investigated domestic and international systems and laws regarding signalmen responsible for communication between tower crane operators and workers and proposed the following three improvement methods. First, the signalman system must be legally and institutionally reestablished. Second, national agencies and private organizations with expertise should create standardized training manuals and distribute them to signalman educators, and create checklists to manage educators. Third, in the case of a site using a tower crane, the employer must mandatorily deploy a signalman with professional qualifications. Lastly, the results of this study are expected to highlight the differences in accident types and causes of manned and unmanned tower cranes and the need for legal and institutional improvement in the signal system.

• Proceedings of the Korean Society of Computer Information Conference
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• 2019.01a
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• pp.135-136
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• 2019

센서 데이터의 발전에 따라 자율주행 자동차 산업도 급격히 성장하고 있다. 미국 우버(UBER)는 2015년부터 자율주행 자동차 산업에 뛰어들었고, 국내에서도 '판교 자율주행 셔틀'이 시범운행 되었다. 따라서 자율주행 자동차는 앞으로 우리 삶에 보다 많은 영향을 끼칠 것이 분명하나, 아직 자율주행 자동차가 완벽하게 개발되지 않은 만큼 우리가 예상하지 못한 교통사고 등 새로운 문제가 나타날 위험이 있다. 따라서 본 논문은 자율주행 자동차에 대해 살펴보고 사고 사례를 분석하여 앞으로 나타날 수 있는 사고 유형을 예측하는 것에 목적이 있다.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 1997.05a
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• pp.139-144
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• 1997

지난 30년간의 LPG(Liquified Petroleum Gas)자동차의 사용으로 현재 전국에는 500여 곳의 LPG자동차 충전소가 운영되고 있다. LPG자동차의 운행대수에 비하면 충전소의 수가 절대적으로 부족하고, 또한 LPG자동차의 보급확대를 위해서는 충전소 확충이 필수적이다. 그러나 최근의 아현동 도시가스 밸브기지 폭발사고나 대구 지하철 공사장 도시가스 폭발사고와 같은 대형 가스 폭발사고의 여파로 충전소 설치 부지의 확보에 큰 어려움을 겪고 있다. 특히, 대도시 지역 내에서의 충전소 설치는 인근 지역주민의 강력한 반대로 거의 불가능한 실정이다. (중략)

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 1999.06a
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• pp.195-200
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• 1999

지난해 LPG충전소 두 곳에서 큰 폭발사고가 발생하여 LPG 충전소의 위험에 대하여 일반의 관심이 크게 고조되었고, 사고 이후 LPG 충전소의 안전관리에 대한 기준은 계속 강화되고 있다. 특히 부천에서의 사고는 아직도 원인이 규명되지 않은 채 책임과 보상문제를 위한 재판이 계속되고 있다. 발생가능성이 매우 희박하다던 BLEVE(Boiling Liquid Evaporating Vapor Explosion)폭발을 경험한 많은 사람들도 LPG 충전소의 안전관리를 위한 많은 규제와 기준을 제한하고 있다. (중략)

• The Journal of the Convergence on Culture Technology
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• v.8 no.5
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• pp.729-734
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• 2022

Various studies using accident cases are being conducted to identify the causes of accidents in the construction industry, but studies on the differences between public and private construction are insignificant. In this study, web scraping and text mining technologies were applied to analyze the causes of accidents by order type. Through statistical analysis and word cloud analysis of more than 10,000 structured and unstructured data collected, it was confirmed that there was a difference in the types and causes of accidents in public and private construction. In addition, it can contribute to the establishment of safety management measures in the future by identifying the correlation between major accident causes.

• Journal of Korea Ship Safrty Technology Authority
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• s.24
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• pp.38-56
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• 2008

우리나라의 경우 해양사고에서 어선이 차지하는 비율은 매우 높아 최근 5개년 동안 전체 해양사고 중 어선사고 비율이 약 68%를 점유하고 있어 해양사고 비율이 가장 높은 어선사고로 부터 인명손실을 예방하기 위한 실용적이고 효과적인 대책이 시급한 실정이다. 본 연구는 어선사고 중 다른 사고에 비해 막대한 인명피해나 재산상의 손실을 초래하는 어선사고 유형인 전복.침몰.화재와 최근에 많이 발생하고 있는 낚시어선사고와 어업재해사고를 중점 대상으로 사례조사를 통하여 자율적인 어선 인명사고 예방체제 수립 및 어업종사자와 안전의식 고취를 제고하고자 한다.

• International Journal of Highway Engineering
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• v.11 no.4
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• pp.41-47
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• 2009

This study deals with the side-swipe accidents of 4-legged signalized intersections in Cheongju. The objectives are to analyze the characteristics of the accidents and to develop the related models. In pursuing the above, this study gives particular emphasis to finding the appropriate methodology to modelling. The main results are as follows. First, injuries were analyzed to be twice than property-only accidents in the side-swipe accidents. The accidents were evaluated to occur more in inside-intersection. Also, the accidents were analyzed to be almost the auto-related accidents and to be occurred by the unsafely-driving activity. Second, multiple linear regression models were evaluated to be more statistically significant than multiple non-linear. The most fitted models were analyzed to be the models with the number of accidents as the dependent variable. The factors of side-swipe accidents analyzed in this study were ADT, area of intersection, right-turn-only-lane, number of pedestrian crossings, limited speed of main road, maximum grade and number of signal phase.

• Journal of the Korean School Mathematics Society
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• v.12 no.3
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• pp.291-305
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• 2009

The purpose of this article is to formulate the base that mathematical thinking power can be improved through activating the metacognitive ability of students in the math problem solving process. The guidance material for activating the metacognitive ability was devised based on a body of literature and various studies. Two high school students used it in their math problem solving process. They reported that their own mathematical thinking power was improved in this process. And they showed that the necessary strategies and procedures for math problem solving can be monitored and controled by analyzing their own metacognition in the mathematical thinking process. This result suggests that students' metacognition does play an important role in the mathematical thinking process.

• Journal of The Korean Association For Science Education
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• v.33 no.1
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• pp.30-45
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• 2013

In this study, we developed a model for analyzing scientists' creative thinking processes, and analyzed Archimedes' thinking process in solving the golden crown problem. As results show, scientists' complex problem solving processes could be represented as a repeating circular model, and the fusion of processes of diverse thinking required for scientists' creativity could be analyzed from the case. Also in this study, we represented the role of experiments in scientists' creative discovery, and investigated the reasons for the difference between the viewpoints of textbooks and historic facts. We found the importance of abductive reasoning and advance knowledge in creative thinking. Archimedes solved the golden crown problem creatively by crossing the scientific thought of dynamics and the daily thought of baths. In this process, abductive reasoning and advance knowledge played an important role. Besides Archimedes' case, if we would reconstruct the creative discovery processes of diverse scientists' in textbooks, students could raise their creative thinking ability by experiencing these processes as educational steps.

• Proceedings of the Korean Nuclear Society Conference
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• 1998.05a
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• pp.844-849
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• 1998

사고관리 방안의 타당성에 대한 면밀한 정토를 위하여 제안된 방안에 대한 운전원의 수행 가능성을 평가하는 과정이 있다. 수행 가능성의 평가에서 기존의 적용 사례와 인적 오류 분석 기법들을 검토하여 기존의 인간 신뢰도 분석 기법을 활용하는데 발생하는 여러가지 문제를 점토하고 새로운 기법의 요건과 방향을 제시하였다. 또한, 산업안전관리 분야에서 사용되고 있는 IAD(industrial Accident Dynamics)를 기반으로 인적오류의 가능성을 분석하는 절차를 제안하였다