• Proceedings of the Korea Information Processing Society Conference
• /
• 2017.04a
• /
• pp.661-664
• /
• 2017

Recently, during disasters occurrence, dealing with emergencies has been handled well by the early transmission of disaster relating notifications on social media networks (e.g., Twitter or Facebook). Intuitively, with their characteristics (e.g., real-time, mobility) and big communities whose users could be regarded as volunteers, social networks are proved to be a crucial role for disasters response. However, the amount of data transmitted during disasters is an obstacle for filtering informative messages; because the messages are diversity, large and very noise. This large volume of data could be seen as Social Big Data (SBD). In this paper, we proposed a big data platform for collecting and analyzing disasters' data from SBD. Firstly, we designed a collecting module; which could rapidly extract disasters' information from the Twitter; by big data frameworks supporting streaming data on distributed system; such as Kafka and Spark. Secondly, we developed an analyzing module which learned from SBD to distinguish the useful information from the irrelevant one. Finally, we also designed a real-time visualization on the web interface for displaying the results of analysis phase. To show the viability of our platform, we conducted experiments of the collecting and analyzing phases in 10 days for both real-time and historical tweets, which were about disasters happened in South Korea. The results prove that our big data platform could be applied to disaster information based systems, by providing a huge relevant data; which can be used for inferring affected regions and victims in disaster situations, from 21.000 collected tweets.

• Economic and Environmental Geology
• /
• v.46 no.3
• /
• pp.247-256
• /
• 2013

In order to improve the quality assurance of the disaster mitigation projects, the economic effect of these projects in the hazardous areas was analysed. Eight project sites were selected for analyses based on the disaster data during the previous 10 years, and the investment effect was evaluated using a benefit cost ratio (B/C). The benefit was estimated using the historical disaster data and presumed to continue for 30 years, while the cost was assumed with the total project cost. Analysis results indicate the B/C ratio is larger than 1 in the difference range, depending on factors such as impact areas and discount rates. According to the analysis results, the average B/C of the eight projects is 4.1 with assuming the discount rate of 4% and the impact diameter of 5 km, which implies that a disaster management project in hazardous areas will give the positive investment effects.

• Journal of the Society of Disaster Information
• /
• v.16 no.1
• /
• pp.155-162
• /
• 2020

Purpose: The purpose of study was to identify problems in disaster recovery resource management and operation through on-site investigation and utilize them as improvement proposal for disaster recovery resources management by local governments. Method: Areas with high natural and social disasters recorded in historical and yearly records of natural and social disasters, related books, and annual reports for 20 years were selected. The DRSS data of the selected local governments were analyzed and the reserve warehouse were selected for field survey. Result: It is analyzed that the current situation in the city hall and district offices is somewhat insufficient due to heavy work by the working-level officials of local governments on the storage of disaster recovery resources. The actual amount of stockpiles and DRSS data are somewhat different or missing because the input method and criteria are not clear at present when inputting the current data. Conclusion: To improve the management of the disaster recovery resource reserve, it is deemed that education of DRSS and training of best practices for the operation of disaster management resources are urgently needed, and that a systematic management of stockpiles using disaster prevention experts will be required.

• Journal of the Society of Disaster Information
• /
• v.6 no.2
• /
• pp.67-85
• /
• 2010

The purpose of this consideration is to present fundamental data for understanding and development the historical approach of Korea Protection by re-examining Royal guarding system through the history in Early Chosun Dynasty. This paper initiated from this critical mind seeking to understand the changing phase of Korea Guarding system, and fundamentally to find the future-oriented ways for the Guarding system. The main materials of history in Early Chosun Dynasty were re-examined, investigated and analyzed and the main references are a code of laws and official as well as private documents such as Kukjo-Oreyeui. Guards system for Royal prince has been found in Byung-jeon of Kyungguk-daejon. he Guards organization has dual system, one was Gumgun which was a private military man and the other was Wuibyung which was a Central military man. On the contrary, central military man were normally protected the royale palaces, but when the King come and go they accompanied and protected the King in safety zone. But just in case they did a job as a member of capital protection military affairs. A question of finance was the reason why there had been dual protection system due to financial matter. If it increased number of man it would pay much money, therefore central military man who has no relevance to national finance were supplied as members of military affairs for the protection of king.

• Journal of the Society of Disaster Information
• /
• v.13 no.2
• /
• pp.276-285
• /
• 2017

Studies on the North East Asian Black Death have been actively conducted, but the contents of the Yanbian region have been rarely mentioned. The purpose of this study was to investigate the preventive measures and effects of the pneumonic plague in the Tumen River basin (mainly the present Yanbian region) based on the study of Yanbian region based on the research of researchers related to the North East Asia Black Death. In particular, we will use historical sources to provide a review of mortality levels and international cooperation in the region, as well as an overview the causes of the pandemic prevention efforts.

• Journal of the Korea Society of Computer and Information
• /
• v.24 no.8
• /
• pp.131-136
• /
• 2019

A wireless sensor network (WSN) consists of several sensor nodes and usually one base station. In this paper, we propose a method to monitor topics using a wireless sensor network. Fire threatens people, animals, and plants, and it takes a lot of recovery time when a fire occurs. For this reason, it is necessary to use a fire monitoring system that is easy to configure and fast to avoid fire. In this paper, we propose a fast and easily reliable fire detection system using WSN. The wireless node of the WSN measures the temperature and brightness around the node. The measured information is transferred to the workstation and to the base station. The workstation analyzes current and historical data records to monitor the fire and notify the manager.

• The Korean Journal of Archival Studies
• /
• no.21
• /
• pp.85-116
• /
• 2009

Records are the social memory storage including collective memory about region, it is impossible to put into and represent all aspects of society with only public records. Japan showed the possibilities of cooperative collecting and the positive records producing and collecting efforts between organizations, even if it was not accomplished by systemic documentation strategy. Some characteristics were found out when this case was reviewed, it is as follows. To begin with, it is the cooperation and share in collecting. Especially, the activities of private organizations look better than public organizations and the cooperative collecting efforts lead to transmit much more social memory and historical records to next generation. Secondly, it is the positive records producing and collecting. The private organizations also left many records of various activities of those one accord. They recognized that recording experience and leaving behind is the survivors' responsibility. We cannot help recognizing the growth of a sense of duty and historical consciousness to record their own experience with undergoing big disaster, earthquake. Thirdly, there was no limit when it comes to the collecting scope. All records related with people and place in disaster area were the target for collecting just like slogan, 'Let's transmit records to next generation as much as possible', 'Common records and resources deserve leaving, because it is important life's information proving situations of the time. We were able to confirm the high will and enthusiasm about 'how, what and why do we transmit something of society to next generation' in this case.

• Journal of the Society of Disaster Information
• /
• v.18 no.2
• /
• pp.290-305
• /
• 2022

Purpose: Currently, port facility informatization technology is focused on the planning and design phases, so the necessity of research and technology development on the port facility maintenance system based on life cycle-level information is emphasized. Method: Based on the maintenance history data of port facilities and facility operation information, from the perspective of the life cycle of port facilities, the system is configured to enable maintenance decisions for port facilities through analysis of aging patterns, performance degradation prediction models, and risk analysis and proposed a method of expressing information. Result: A function was developed to simultaneously display the SOC performance evaluation and the comprehensive performance evaluation developed in this study, so that mid-to long-term maintenance and reinforcement and facility expansion can be applied and comparatively judged. Conclusion: The integrated port performance system developed in this study induces and supports the risk minimization of port facility management by proactively promoting appropriate repair and reinforcement measures through historical and operational information on port facilities.

• Journal of The Geomorphological Association of Korea
• /
• v.27 no.2
• /
• pp.65-80
• /
• 2020

This paper deals with risk assessment of life in a landslide-prone area by a GIS-based modeling method. Landslide susceptibility maps can provide a probability of landslide prone areas to mitigate or proper control this problems and to take any development plan and disaster management. A landslide inventory map of the study area was prepared based on past historical information and aerial photography analysis. A total of 550 landslides have been counted at the whole study area. The extracted landslides were randomly selected and divided into two different groups, 50% of the landslides were used for model calibration and the other were used for validation purpose. Eleven causative factors (continuous and thematic) such as slope, aspect, curvature, topographic wetness index, elevation, forest type, forest crown density, geology, land-use, soil drainage, and soil texture were used in hazard analysis. The correlation between landslides and these factors, pixels were divided into several classes and frequency ratio was also extracted. Eventually, a landslide susceptibility map was constructed using a logistic regression model based on entire events. Moreover, the landslide susceptibility map was plotted with a receiver operating characteristic (ROC) curve and calculated the area under the curve (AUC) and tried to extract a success rate curve. Based on the results, logistic regression produced an 85.18% accuracy, so we believed that the model was reliable and acceptable for the landslide susceptibility analysis on the study area. In addition, for risk assessment, vulnerability scale were added for social thematic data layer. The study area predictive landslide affected pixels 2,000 and 5,000 were also calculated for making a probability table. In final calculation, the 2,000 predictive landslide affected pixels were assumed to run. The total population causalities were estimated as 7.75 person that was relatively close to the actual number published in Korean Annual Disaster Report, 2006.

• 한국방재학회:학술대회논문집
• /
• 2007.02a
• /
• pp.152-155
• /
• 2007

Efficiency and limitations of HAZUS-MH, a GIS based systematic and informative system developed by FEMA and NIBS for natural hazard loss estimations, are discussed by means of a pilot study in the Korean Peninsular. Gyeongsang-do has been selected for the test after careful reviews of previous studies including historical and modern seismicity in the peninsular. A ShakeMap for the selected scenario earthquake with magnitude 6.7 in Gyeongju area is prepared. Then, any losses due to the scenario event have been estimated using HAZUS. Results of the pilot test show that the study area may experience significant physical, economic and social damages. Detailed study in the future will provide efficient and crucial information to the decision makers and emergency agents to mitigate any disaster posed by natural hazards.