• Journal of the Society of Disaster Information
• /
• v.19 no.2
• /
• pp.383-394
• /
• 2023

Purpose : This study focuses on improvements in cell broadcast service(CBS) with consideration of socially vulnerable groups, and identifies service factors necessary for elderly people in particular. Method : Multiple regression analysis was applied to test overall satisfaction with cell broadcast service as the dependent variable and each of the service factors as the independent variable. Result : The results showed that fast delivery had the greatest effect on overall satisfaction with cell broadcast service in both groups, followed by the delivery of sufficient content for the elderly group and system quality for the non-elderly group. The results demonstrated that the elderly group cared more about information content, while the non-elderly group considered functions such as system quality and text message transmission criteria more important. Conclusion : Elderly people consider the delivery of sufficient information important as well as fast delivery, which suggests that it is necessary when sending cell broadcast service to give consideration to the characteristics of elderly people, as they tend to have weaker understanding and thinking abilities than the non-elderly.

• International Journal of Advanced Culture Technology
• /
• v.11 no.1
• /
• pp.290-295
• /
• 2023

The global warming by greenhouse gases causes climate change and disasters such as earthquakes and tsunamis frequently, leading to great damage. It is important to build efficient and scalable disaster response services to minimize the damage. Existing disaster warning service by the mobile text is limited by the scalability and the data size to be delivered. In this paper, we propose a framework for disaster response services that is efficient and flexible by allowing to adopt various indexing schemes and scalable by supporting any number of clients in disaster situations anytime and anywhere. Also, the framework by wireless data broadcast can be free from the limitation of the size of data to be delivered. We design and implement the proposed framework and evaluate the framework. For the evaluation, we simulate the implemented framework by adopting various indexing schemes like HCI, DSI and TTSI, and by comparing the access times of the clients. Through the evaluation, we show that the proposed framework can provide efficient and scalable and flexible disaster response services.

• Journal of Korea Multimedia Society
• /
• v.16 no.11
• /
• pp.1297-1304
• /
• 2013

The quick report and propagate information are increasingly important because nowadays it is hard to predict the damages of flooding by unexpected heavy rain. In addition, there are not many ways to receive disaster information in real time. Accordingly, we designed the system which can earn information from a lot of messages on twitter. Above all, our system can extract and deploy disaster information by comparison with erstwhile social network service mash-up system as only broadcast media. Significant objective of this paper is to design the fastest extract disaster information system of mass media.

• The Journal of the Korea Contents Association
• /
• v.13 no.8
• /
• pp.20-27
• /
• 2013

In this paper, we propose a system for an emergency alert broadcasting service that broadcast residents prompt alarms immediately after the disaster occurs in the private sector. The proposed system consists of a contents streamer, n contents distributor, and m television controller under the assumption that the public broadcasting system and the local area network have been already installed. Also, the goal of the system is to forcibly broadcast disaster information to the residents by streaming contents for alerts on their TV. The proposed system in this paper can be utilized in sharing of emergency information in the area as quickly as possible and various information of the area.

• The Journal of Information Systems
• /
• v.32 no.3
• /
• pp.183-203
• /
• 2023

Purpose The purpose of this study is to examine the current operational status and problems of the Public Warning System (PWS) in China, and to propose feasible solutions to improve the performance and efficiency of the PWS through a comparative analysis with the Cell Broadcast Service (CBS)-based disaster SMS system adopted by other developed countries in the world. Design/methodology/approach In this study, the characteristics of PWS using SMS, applications, and CBS, respectively, are analyzed in detail, and compared and analyzed in terms of convenience, standardization, data security, speed, and location accuracy. In addition, CBS-based PWS in developed countries, such as U.S., E.U., Korea and Japan, were studied and their performance on key criteria was evaluated. Findings Based on the results of the study, the problems of China's PWS are summarized and recommendations are made to improve the PWS through the introduction of CBS technology. To this end, specific improvement measures are proposed in terms of the application of CBS technology, system construction and operation, and improvement of data security. In addition, the comparative analysis of PWSs in other developed countries is conducted to provide reference for the direction of PWS's improvement.

• Fire Science and Engineering
• /
• v.27 no.1
• /
• pp.14-19
• /
• 2013

In this paper, I have developed an automatic distress notification system (ADNS) working with an external VHF device in small ship. The proposed system is as part of a small ship disaster analysis system which can detect and quickly respond to the small ship disaster. The automatic notification system receives the location information signal from the disaster analysis system, and the signal will be converted into voice signal to broadcast of the accident position through external VHF device. It will be sending a distress message as form of voice information through VHF device until sinking under the water. Through this research, I expect we'll be make a quick response and prevent a terrible loss of human life.

• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2014.06a
• /
• pp.94-96
• /
• 2014

2014년 4월 16일 세월호 참사는 수백 명의 생명을 앗아간 대형 인재로 재난 관리뿐만 아니라 재난 방송과 같은 공적 미디어의 역할과 기능에 대한 반성의 계기와 종합적 재난 미디어 체계의 필요성을 보여주고 있다. 본 연구는 재난 상황에서 우리 국민들이 여러 가지 유형의 미디어에 대한 이용 행태를 파악하고 미디어들이 가지고 있는 재난 정보 속성을 분석하고자 하였다. 또한 일반인을 대상으로 하는 재난방송과 차별적으로 재난 현장에서 정보를 제공하는 재난 미디어의 요구사항을 도출하고자 한다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2013.06a
• /
• pp.209-211
• /
• 2013

오늘날 미디어 발전은 상업적 방향으로 치중하는 경향이 있다. 하지만 연구계에서 지난 10년간 재난 미디어로서 가치를 실현하기 위한 기술 연구들의 진척도 확대되고 있는 가운데 앞으로 재난 미디어의 발전 방향성을 통찰적으로 이해해 볼 필요가 있다. 본 연구에서는 국내 재난 미디어 기술 연구들을 분석해 신속한 정보 전달을 위한 경보 미디어 기술과 휴대기기를 대상으로 하는 매체 기술에 대한 연구가 활성화 되어 있음을 발견했다.

• The Journal of the Korea Contents Association
• /
• v.21 no.12
• /
• pp.296-301
• /
• 2021

This study is a study dealing with the empirical test of standardized multimedia disaster warning broadcasting linked with the next-generation prediction and warning platform and the disaster warning additional data service of terrestrial UHD broadcasting. The next-generation prediction and warning platform used in the demonstration test complies with the CAP-based TTA standardization standard, and the UHD disaster warning additional data service complies with the AEAT standard. As a result of the experiment, when a standardized CAP disaster warning message is issued and delivered to a broadcasting company, a system was established so that it is automatically converted to AEAT, a UHD disaster warning additional data message, and transmitted. The receiver unit was configured by connecting a set-top capable of receiving disaster alert data and a TV with an HDMI cable. When a disaster is announced, the set-top displays the AEAT message on the TV broadcasting screen, customized to the priority of the disaster and the area where it is issued. In addition, incoming messages are displayed in a language suitable for user settings among 5 languages. Additional multimedia functions such as images and alarm sounds could also be linked. In particular, it was confirmed that the receiver message was displayed within 3 seconds of issuing the disaster alert, enabling prompt delivery of the disaster alert.

• Journal of Broadcast Engineering
• /
• v.19 no.6
• /
• pp.847-853
• /
• 2014

When a disaster occurs, effective alerts will reduce human life and property loss. The Integrated Emergency Alert System is a national disaster management system which integrates existing alert systems to deliver effective disaster alerts. Alert message exchange protocol is the essential technology for the System. In Korea, the first specification for "Common Alerting Protocol Profile for Integrated Emergency Alert System" was established in 2014. In this paper, we derive two additional requirements for more enhanced alert service and propose revision of the specification: multilingual alert service for foreigners and more flexible representation of target area. We review the associated foreign profile specifications as well as the domestic specifications to analyze these requirements. Finally, we propose the most efficient way to deliver multilingual alert message and to represent target area.