• Journal of the Korean Society of Marine Environment & Safety
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• v.21 no.1
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• pp.47-56
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• 2015

Under the conditions of invested actual changes of heeling angles during MV Sewol's sinking, this study proposes passengers' evacuation scenarios, which are based on the assumption of normal orders of evacuation being given to the passengers, and evaluates using a marine-specialized human evacuation simulation tool. As results, when the heeling angle is set as 0 degree or 30 degree, it is found out that almost every passengers can success to evacuate to the musterstations, even though the evacuation times are different depending on the scenarios and the walking speeds. Meanwhile, when the heeling angle is varied as the Sewol incident, 3.1 %(Scenario Sc-Va which set chutes on port side as evacuation routes), 11.1 %(Sc-Vb, every open decks of port side as evacuation routes) and 20.0 %(Sc-Vc, every open decks of port and AFT sides as evacuation routes) among 476 passengers can successfully reach to the musterstations from their cabins with the condition of average walking speed as 2.04 m/s on flat. And only 0.8 %(Sc-Va), 3.8 %(Sc-Vb) and 10.7 %(Sc-Vc) can success to evacuate with the condition of average walking speed as 1.48 m/s on flat.

• Journal of the Society of Disaster Information
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• v.11 no.1
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• pp.63-72
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• 2015

This study aims to examine the state of accidents and related issues related to Theme Groups experiential learning experiences of students and suggest ways to improve security measures to prevent future incidents. Case studies of the sunken Sewol ferry and the collapse of the gymnasium at Mauna resort in Gyeongju are conducted by analyzing the existing literature and the data collected from the media sources and related agencies. With a basis on the findings of the analyses, it is suggested that legal foundation and disaster and risk management systems (systematic revision of the laws, raised safety awareness among citizens, production and education of security managers, formation of disaster management organizations, establishment of headquarters in case of emergency and installation of first aid facilities, improved national response system, enforcement of disaster drills, introduction of assessment system, etc.) must be established to contribute to creating a safer society.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2016.11a
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• pp.159-162
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• 2016

본 논문에서는 on-line 안전교육의 현황에 대해서 알아본다. 2014년 4월 16일 세월호 침몰사고를 계기로 '안전' 에 대한 인식이 강화되면서 안전교육에 대한 민간자격과정이 우후죽순처럼 번지고 있다. 또한 재난시 대응할 수 있는 매뉴얼과 행동요령에 대한 국민들의 관심이 높아지고 있다. 특수재난은 유형의 다양화, 규모의 대형화로 여타 재난에 비해 사회적 파장이 비교할 수 없을 만큼 크므로 재난관리기관(주관 책임)간 협업대응이 반드시 필요한 데 반해, 특수재난분야 종사자를 위한 교육프로그램은 부족한 실정이다. 따라서, 특수재난은 on-line 안전교육인 e-러닝 콘텐츠의 개발과 여러 가지 안전교육 프로그램으로 특수재난 분야 종사자가 언제든지 온라인상에서 학습, 활용할 수 있도록 보급할 수 있도록 노력하고 있다.

• Journal of Internet Computing and Services
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• v.16 no.3
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• pp.105-116
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• 2015

The Sewol ferry catastrophe that took place on April 16 2014 was unprecedented in terms of its sociopolitical implications, which had reverberated throughout the Korean nation. Mindful of such distinct characteristics of the Sewol ferry catastrophe, this thesis looks into the salience of the agendas portrayed in Twitter and Portal News coverage on the disaster and the correlation between the attribute-specific agendas of the foregoing mediums by making use of the agenda rank order correlation method. Extraction and analysis of big data revealed that first, while the hypothesis that there were little difference in terms of salience among the main agendas between Twitter and Portal News was dismissed, the rank order correlation proved to be high as regards the main agendas on Twitter and Portal News. This signifies that Twitter agendas exert influence over those on Portal News. Next, and regarding the five main agendas on the incident, there existed differences in salience between the attribute-specific agendas of the two mediums, with low figures for corresponding rank order correlations. Such results signify that Twitter and Portal News have little influence over each other as regards their agenda rank order correlation.

• Proceedings of the Korea Water Resources Association Conference
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• 2015.05a
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• pp.374-374
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• 2015

최근 이상기후로 인한 홍수, 산사태 등 자연재난 및 각종 사건사고 등 사회적 재난에 따른 인명 피해가 매년 증가하고 있는 추세이다. 특히, 재난에 대한 노출도가 높고 재난이 빈번하게 발생하는 일본, 미국과 달리 높지 않은 우리나라의 경우 실제 재난상황에 직면할 경우 상대적으로 낮은 생존율을 보이고 있으며 이러한 대표적인 사례가 바로 올해 발생한 세월호 침몰사고에 따른 인명 피해를 들 수 있다. 이에 사후약방문식으로 많은 전문가들이 체계적인 대응 매뉴얼 부재, 정부의 일사분란한 대응의 부족을 언급하고 있는 실정이나 정작 재난에 직면한 일반 국민들이 평상시에도 이해하기도 힘든 매뉴얼의 대응수칙을 재난상황에 따를 수 있을 것이라고 생각하는 것은 "재난에서 재난을 배울 수 없는" 우리나라의 현주소 그 자체를 보여주는 것이라 할 수 있다. 이와 같은 문제점을 해결하기 위해서는 재난 발생시 신속한 대응이 가능한 수준의 직관적 재난대처 요령을 국민들에게 알려주는 것이 무엇보다 요구된다 할 수 있다.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.15 no.2
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• pp.102-110
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• 2016

After Sewol ferry disaster occurred in April 2014, Korean government began investing to deploy LTE-based public safety network until the year of 2017. In order to reduce the operating and capital costs, resource sharing scheme among public safety network and commercial LTE networks is considered as one of the viable approaches. This thesis proposes a method of allocating bandwidth of public safety network based on various priorities required for disaster scenarios and stages in a resource sharing environment. In order to obtain the highest efficiency, we formulate the bandwidth allocation problem as a Fractional Knapsack Problem. Greedy algorithm was applied to solve the problem. For performance evaluation, we created several disaster scenarios and set suitable parameters for each scenario based on a disaster manual. The proposed method is compared with two typical methods, which are Class-based bandwidth allocation and Uniform bandwidth allocation. The results showed that the better performance in terms of the sum of the values and the amount of lost bytes.

• Journal of the Society of Disaster Information
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• v.10 no.2
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• pp.192-198
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• 2014

In the current times, large-scale disasters, such as the recent sinking of Se-Wol ferry, are occurring continuously and unexpectedly. In order to minimize damage in the disaster scene, quick delivery and sharing of information between crisis management agencies is one of crucial factors that determine the scale of the damage. However, ineffective communication persists between the agencies in disaster scenes where disaster management action has to be carried out urgently. For that, this research focused on the actual condition of the inter-agency communication method and wireless operations, and also suggested the building plan of effective and efficient networking through understanding of each agency's present state and duties.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.9 no.1
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• pp.49-57
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• 2016

Recently, marine accidents such as the sinking accident Mongol freighter ship and the sinking accident of Sewol ferry in Jindo continuously happen. In order to decrease the number of these marine accidents, Korean ships are obliged to follow the AIS(Automatic Identification System) system. The AIS protocol includes all information for sailing ships. However, the standard AIS protocol does not provide any security function, In addition, it is possible to hijack the standard AIS protocol in case of using a satellite communication device called FUNcuve Dongle Pro+. Therefore, this paper analyzes weak points of the security in the standard AIS protocol. Furthermore, this paper ensures reliability by marking the MAC Address of sender and receiver for secure communication and suggests the protocol that can securely send data, using the VPN Tunnelling method. Therefore, the suggested AIS protocol provides the secure communication to the AIS protocol and protect the messages in the AIS protocol, which can serve safe voyages by decreasing the marine accidents.

• Korean Journal of Culture and Social Issue
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• v.22 no.3
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• pp.363-385
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• 2016

As the role of volunteers in disaster settings has been growing overtime, the present study was aimed to understand voluntary disaster workers with their burnout pattern and examine group differences in their secondary traumatic stress and world assumptions. Total of 70 voluntary workers who served for recovery from Sewol ferry disaster participated in this study. Using cluster analysis, we identified three distinct cluster groups on the basis of three burnout subscale scores(emotional exhaustion, personal accomplishment, depersonalization): Group 1 was characterized by the highest score on personal accomplishment and low levels of emotional exhaustion and depersonalization. Group 2 scored the highest on emotional exhaustion and depersonalization, and relatively high on personal accomplishment. Group 3 was characterized by the lowest scores on three subscales. Results from χ² tests showed that groups differed significantly on types and the period of support activities. Analysis of variance was conducted to identify further group differences. The results indicated that Group 2 scored the highest on secondary traumatic stress, while Group 1 scored the highest on worthiness of the self. Finally, the clinical implications and limitations of these results as well as suggestions for further research were discussed.

• Korean Journal of Culture and Social Issue
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• v.21 no.4
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• pp.671-696
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• 2015

The purpose of this study is to explore the effect of individual difference variables on emotional change after indirect trauma among elderly. After Sewolho Accident in South Korea, we invested emotion of the elderly and collected the same variables from the same sample two months after the accident. In study, we examined how social support, depression, future time perspective, and active aging affect emotion of elderly and which emotions are affected by these four variables. As a result, when compared to the counterpart, those with lower perceived social support, future time perspective, and active aging and higher depression level experienced lower levels of positive emotion and higher level of negative emotion after indirect disaster experience. Overall, we could certify that social support, future time perspective, and active aging functioned as protective factors, whereas depression functioned as a risk factor. Implications and limitations for our findings were discussed.