• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.16 no.3
• /
• pp.511-521
• /
• 2012

JXTA technology is a set of open protocols that enable any connected device on the internet or MANET(Mobile Adhoc NETwork) to communicate in a P2P manner. In this paper, we present a JXTA-based smartphone collaborative application. For this, we define the core services and collaborative services necessary for a P2P network, and design proper protocols to support the services. The developed application provides the effective environment for group works in smartphones, supporting the various virtual workspaces. Since application supports the group works among users in close-range without relying on the mobile network, it could be very useful in various situations such as the disaster area.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2007.10a
• /
• pp.665-668
• /
• 2007

The location based service means the service using the location information and the service used based on the location information comes into the spotlight as the critical information of the future mode townsman ubiquitous-City construction. LBS settles down as the core element of ITS or the telematics as the cutting edge technology appearing according to the power generation of the mobile communication technology and recently gradually broadens a range to the public safety service including the distribution management, the asset management, a children and old and the weak protection means, the disaster preparation rescue service like the E-911 of U.S. In the national, the technical regulations about the ground wave LBS was established at November 2005 for the first time in the country. but it actually operated and problems were deduced. Therefore, in this paper, domestic and foreign LBS usage trend and technical standards case try to be analyzed for the revision of the technical regulations of the ground wave LBS serviced in the national and the national technical standards bill for the revision tries to be prepared based on this.

• The Journal of Korea Robotics Society
• /
• v.11 no.3
• /
• pp.127-132
• /
• 2016

For a practical mobile robot team such as carrying out a search and rescue mission in a disaster area, the localization have to be guaranteed even in an environment where the network infrastructure is destroyed or a global positioning system (GPS) is unavailable. The proposed architecture supports localizing robots seamlessly by finding their relative locations while moving from a global outdoor environment to a local indoor position. The proposed schemes use a cooperative positioning system (CPS) based on the two-way ranging (TWR) technique. In the proposed TWR-based CPS, each non-localized mobile robot act as tag, and finds its position using bilateral range measurements of all localized mobile robots. The localized mobile robots act as anchors, and support the localization of mobile robots in the GPS-shadow region such as an indoor environment. As a tag localizes its position with anchors, the position error of the anchor propagates to the tag, and the position error of the tag accumulates the position errors of the anchor. To minimize the effect of error propagation, this paper suggests the new scheme of full-mesh based CPS for improving the position accuracy. The proposed schemes assuring localization were validated through experiment results.

• Journal of the Korean Society of Hazard Mitigation
• /
• v.4 no.3 s.14
• /
• pp.83-87
• /
• 2004

In underground culvert are established main and basic facilities for electric power, communication, gas and heating pipe etc. In the future the use of underground culvert will be enlarged and the peril of fire will be increased. Thus it is necessary to make a general plan to prevent fire. The skills to prevent fire in underground culvert will be accumulated by the spray distribution of the nozzle and domestic skills in fire fighting will be upgraded. It will also contribute to the construction of common small fire fighting system suitable to the domestic surrounding and the growth of domestic skills for fire fighting and disaster prevention.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.15 no.10
• /
• pp.2203-2208
• /
• 2011

In this paper, we describe application service development for secure land and marine transport based on CSD (Conveyance Security Device) systems. Based on CSD systems, we present application service and security service according to relevant standards as well as test procedure of developed services. Exploiting temperature, moisture, impact sensors, state monitoring function of container freight was developed to prevent disaster during transportation in addition to security function with CSD. For confidentiality of messages exchanged among application service entity and CSD systems, Encryption and decryption functions going by RC5 and AES-128 algorithms were implemented at desktop PC and 8 bit CPU environments, respectively. Measuring the elapsed time during encryption and decryption shows that two algorithms are allowable for the application service.

• Journal of Fisheries and Marine Sciences Education
• /
• v.22 no.4
• /
• pp.589-603
• /
• 2010

The purpose of this study is to develop a integrated(fusion) utilization model aimed at maximizing the development/management functions of urban estuarine area and to present an integrated concept by analyzing the existing document and data. The main points of this study are as follows: 1) The integrated utilization model suggested in this paper goes beyond the existing idea of sustainable utilization and conservation, putting an emphasis on rational decision-making in estuary management and peaceful coexistence between human and nature. 2) Policies for utilization/development/conservation/regeneration of urban estuarine area include the establishment of communication system between human and nature and a safety net considering both human and nature, the support for environment-friendly community development and the importance of preserving valuable ecosystem and wetland habitat. 3) Lastly, this study suggested that the major tasks for the fusion utilization model development are the integrated management of estuary areas, the conservation and preservation of wetland ecosystem, proper utilization of estuary's productivity, and the introduction and action plans of the integrated management model including the best way to address contamination and disaster management.

• Journal of Digital Convergence
• /
• v.13 no.1
• /
• pp.185-190
• /
• 2015

The trend of Internet of things are changed from public and examples of corporate center to B2C service. As you can see, through the practice of domestic and international services Internet of Things, conventional disaster, disasters, such as the case of the public sector, factory automation company now mainly direct B2C (Business to Consumer) services are affecting the individual has spread. In this paper we propose a method of platforms and components, and network configuration plan for exploration robot design based on remote control and monitoring system with IoT.

• International Journal of Contents
• /
• v.9 no.2
• /
• pp.48-57
• /
• 2013

It has been determined that two-way evacuation routes that connect houses to evacuation sites should be developed to protect residents of historic preservation areas from future disasters. These routes are required because traditional buildings and other historic spatial elements are located close to each other. It is important to understand residents' perceptions of evacuation routes that connect their houses to temporary safe places to develop evacuation system strategies that include effective two-way evacuation routes. This paper describes a procedure used to construct a two-way evacuation route database designed to preserve two study areas that was based on an interview survey conducted with area residents. The resulting database contained residents' perceptions of evacuation routes. The database contains categorized spatial problems related to these routes that can be used for future research.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.19 no.11
• /
• pp.2731-2738
• /
• 2015

The importance of disaster observation facilities and system are increasing around the world in order to predict and prevent water disasters, which cause serious damage to life and property. A performance test center was built to stabilize performance, compatibility, and reliability of devices, and to verify new S/W. The aim of this study is to make a guideline to build standard verifying system for hydrological observation devices by building the performance test center. In addition, efficiency of management and operation of hydrological devices can be enhanced through device analysis, maintenance, database building, and grade certificate publishment after the device test.

• International journal of advanced smart convergence
• /
• v.10 no.4
• /
• pp.124-133
• /
• 2021

The purpose of this study is to analyze the types of latent profiles of high school students' fire safety awareness and to identify the characteristics of related variables. For this purpose, a survey was conducted from March 22 to May 25, 2021 for 1054 high school students (male; 569, female; 485) in 3 cities, in Jeollabuk-do. The latent profile was analyzed using a scale consisting of 4 sub-factors: 'fire prevention', 'fire preparedness', 'indirect fire response', and 'direct fire response'. It was checked whether there were differences according to the inter-individual differences of the latent group. As a result of the analysis, fire safety awareness of high school students was classified into three latent profiles. The three groups were named 'High Perception Type', 'Moderate Perception Type', and 'Low Perception Type' according to their types. In fire safety awareness, there is a significant difference in the individual differences according to the gender and academic achievement of the latent profile. These results are meaningful as the first study to analyze the latent profile of high school students' fire safety awareness, and it is also meaningful to provide a useful basis for the contents and methods of customized fire safety education by identifying the tendencies of spontaneous groups and their fire safety awareness.