• Earthquakes and Structures
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• 제15권2호
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• pp.133-144
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• 2018

To study the effectiveness of sliding isolation in a CRLSS (concrete rectangular liquid-storage structure) and develop a reasonable limiting-device method, dynamic responses of non-isolation, sliding isolation with spring limiting-devices and sliding isolation with steel bar limiting-devices are comparatively studied by shaking table test. The seismic response reduction advantage of sliding isolation for concrete liquid-storage structures is discussed, and the effect of the limiting-device type on system dynamic responses is analyzed. The results show that the dynamic responses of sliding isolation CRLSS with steel bar-limiting devices are significantly smaller than that of sliding isolation CRLSS with spring-limiting devices. The structure acceleration and liquid sloshing wave height are greatly influenced by spring-limiting devices. The acceleration of the structure in this case is close to or greater than that of a non-isolated structure. Liquid sloshing shows stronger nonlinear characteristics. On the other hand, sliding isolation with steel bar-limiting devices has a good control effect on the structural dynamic response and the liquid sloshing height simultaneously. Thus, a limiting device is an important factor affecting the seismic response reduction effect of sliding isolation. To take full advantage of sliding isolation in a concrete liquid-storage structure, a reasonable design of the limiting device is particularly important.

• 한국재난정보학회 논문집
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• 제19권1호
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• pp.69-75
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• 2023

연구목적: 지속되는 기후변화에 의한 풍수해 등의 발생 빈도와 강도가 증가하고 있어 극한 기상현상이 지역 특성 및 상황에 따라 재난으로 이어지는 위험성이 높아지고 있어 기상 관련 긴급정보를 사용자 및 사용자 환경에 맞추어 신속하게 제공할 필요가 있다. 연구방법: 기상 재난에 의한 피해 위험 지역 거주 주민과 재난 현장에서 재난에 대응하는 방재 관계기관 등 특정 사용자의 요구에 특화된 맞춤형 기상긴급정보를 전달하기 위한 기상긴급정보전달시스템의 1단계 시스템이 개발되고 인공지능을 활용한 긴급성 식별 방안이 연구되었다. 시범연구로 극한 기상에 의한 재난 뉴스기사를 분석하고 심각성을 식별하여 관련된 기상 특보와 연계하는 방안을 제안하고자 하였다. 연구결과: 1단계 기상긴급정보 전달시스템이 개발되었고 보다 광범위한 자료 분석을 통해 유용한 정보를 추가할 수 있는 방안이 제시되었다. 결론: 기상긴급정보의 직접적이며 신속한 제공을 통해 극한기상에 의한 재난 피해를 줄 일 수 있을 것으로 기대된다.

• 항공우주시스템공학회지
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• 제14권5호
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• pp.83-90
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• 2020

재난·재해는 우리 사회의 인명과 재산에 막대한 피해를 주고 있으며, 국가적으로 해결해야 할 사회문제로서 인식되고 있다. 사물인터넷, 인공지능, 드론(무인기), 빅 데이터와 같은 4차 산업혁명 기술들은 과학·기술적 사회문제해결 도구로서 재난·안전산업 분야에도 흡수되면서 사회 전반에 영향을 미치고 있다. 국내 무인기 관련 29개 기관/기업은 재난치안 현장에서 운용 가능한 멀티콥터형 소형무인기 통합시스템 구축('17~'20)을 완료할 예정이다. 본 논문은 국가 재난대응 체계의 전략 자산으로서 재난치안용 무인기의 중장기적인 발전 방향을 고찰하고자 한다. 먼저, 재난안전 산업 및 정책 동향을 분석하고, 소형무인기 개발현황 및 향후계획, 부족기술 확보, 경쟁력 강화 방안 고찰을 통해 개발전략, 특화임무, 플랫폼, 통신, 관제, 운용 측면에서 재난치안용 무인기의 단계별 연구개발 방향을 제안한다.

• 한국재난정보학회 논문집
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• 제12권1호
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• pp.69-73
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• 2016

선점법에 대한 연구가 유한요소법처럼 범용화 되어 있지 않아 적용성과 유효성에 대한 연구가 필요하다. 본 연구에서는 범용적으로 사용된 유한요소법과 비교하여 비선형 진동문제에 대한 선점법의 적용성과 유효성을 확인한다. 또한, 선점법을 미분방정식 조건에 따라 내부법, 경계법, 혼합법으로 나누어 비선형 응답 곡선을 유한요소법 결과와 비교하여 동적 특성 문제의 선점법 적용성과 유효성을 확인한다.

• 드라이브 ㆍ 컨트롤
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• 제17권4호
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• pp.38-45
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• 2020

The purpose of this study was to analyze the design sensitivity of an independent driving system for disaster response. The research procedure was as follows. First, an analysis model based on the circuit diagram of the driving system was developed. Second, to ensure the reliability of the analytical model, the load-free test results and analysis results were compared. Even if different loads acted on four independent motors, the system was confirmed to be implemented according to the design intent. Finally, the design variables of the analysis model were analyzed to obtain design variables with a significant impact on system performance and stability. The analysis program used simulation X.

• 동아시아경상학회지
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• 제8권4호
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• pp.19-28
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• 2020

Purpose - This study aims to lay the foundation for a desirable direction to solve future environmental problems through framework research on environmental cooperation according to distribution of urbanization between South and North Korea. The article also attempts to explore solution to two Koreas' environmental problems from the cooperative perspective between South and North Korea and draw future policy tasks. Research design, data, and methodology - For methodology, North Korea's legal system to cope with disasters is taken into consideration in terms of literature review. This study also analyzes a series of processes related to North Korea's disaster management through case study, and draws policy measures for North and South Korea's cooperation scope and methods. Result - The results support that North Korea is very vulnerable to environmental disasters due to food shortages, economic sanctions, and enormous natural disaster damages including flood damages occurring each year, because of the lack of disaster prevention infrastructure such as river maintenance. Conclusion - At the current time when North and South Koran exchange and cooperation increase, a disaster management cooperative system is needed for the areas where South and North Korea manage through division. It also suggests that there is a need to establish regulations and procedures for support items in advance for a quick response to disasters in North Korean region.

• 한국IT서비스학회지
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• 제12권3호
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• pp.151-163
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• 2013

It is no doubt that information technology is the key factor of national safety. Information technology is positively useful for national security such as crime prevention and detection, criminal investigation, disaster management, and national defense. However, it might be a threat to the security as we saw in the examples such as '3.4 DDoS attacks' and 'Nong-hyup Computer Network Failure.' Although the effect that information technology makes upon the national security is immense, the current legal system does not reflect these changes well. National security should be kept during 'prevention-response-recovery' process regardless it is in the online on offline. In addition, public administration for national security should be based on laws. However, the current legal system is lack of legislative basis on cyber and physical disaster, and the laws on the response to disaster might cause confusing. Therefore, this study examines the limitation of the current legal system on national security, and suggests directions for the development of the system based on the new establishment of the legal concept for 'national security'.

• 대한안전경영과학회지
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• 제17권4호
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• pp.23-33
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• 2015

Recently, the Ministry of Employment and Labor Management is a trend to strengthen all men death rate than the accident rate. Points reduction in the accident rate change orders related to credit rating score to +2 points in his plans as part of +1 point. In addition, according to the fancy linger RISK treatment in the event of a disaster site and fiction treatment to achieve accident-free during processing the scene interspersed with equity issues have been raised. In general disaster for the problem in the first two cases occurs when abnormal process according to the disaster site manager positions dismissal policy, each division headquarters itself, interspersed disasters performance compared to processing in accordance with the refrain, processing expenses in accordance with the composition of untreated industrial accident, costs and burdens partners FTC, there is a possibility that the issues raised, such as the Ministry of Employment and Labor. In response to domestic social practices focused on the construction site practices and prevention measures should be evaluated with respect to what.

• 한국비블리아학회지
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• 제28권3호
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• pp.67-93
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• 2017

본 연구는 언어 네트워크 분석을 통해 재난정보와 관련한 국내 연구동향 분석을 목적으로 한다. 이를 위하여 학술연구정보서비스(RISS)를 검색하여 2008년부터 2017년 사이에 발간된 재난정보와 관련한 국내 학위논문 및 학술지논문 312건을 수집하였다. 그리고 논문들의 서지사항을 토대로 통계분석을 실시하였다. 뿐만 아니라 연구논문들의 논문명을 대상으로 키워드를 추출하여 빈도분석 및 언어 네트워크 분석을 실시하였다. 분석 결과, 최근 재난분야에서 빅데이터와 관련한 연구가 급증하였으며, 재난정보 공유 및 활용의 중요성이 증대되고 있다. 또한 재난대응을 위하여 공간정보, 실시간정보, 지리정보 등 다양한 유형의 재난정보가 활용되고 있었다.

• 산업경영시스템학회지
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• 제46권3호
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• pp.32-40
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• 2023

Recently, there are some outdoor floor advertising lighting devices as one of the active marketing methods. However, for outdoor use, there are many restrictions due to the Outdoor Advertisement Act, according to requiring high-output heat generation, waterproofing, and AC power, etc. The purpose of this study is to develop a Duo Light product optimized for indoor use through publicity and information guidance in normal times and automatic evacuation route guidance display in case of disaster, in conjunction with disaster safety. To that end, patent search and patent association analyses were conducted, and a comparative analysis with commercial products was conducted as a case study. In addition, prototypes were designed and produced through the review of operation principles, where field environment surveys and self-tests were conducted. Also, technology roadmaps were presented by preparing plans for expandability and advancement of products. For the analysis of technology commercialization, the feasibility of technology commercialization was examined through the analysis of Jolly's Model and Lean Canvas Model. The results of this study will be able to contribute to minimize human damage through the effective response to disasters, which can increase the effect of indoor advertising by using the proposed indoor floor advertising lighting device in advertising and disaster situations.