• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.11a
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• pp.94-95
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• 2022

선박 운항 안전 확보를 위해 필요한 선박과 선박, 선박과 육상 및 기타 해양 안전 관련 주체와의 통신은 자율/무인 선박의 출현 및 유무인 선박이 혼재 운항하는 과도기적 상황에서 기존 VHF, AIS 등의 통신 기능을 능가하는 고용량, 고신뢰 선박 중심 직접통신 체계를 요구한다. IMO의 자율운항 선박 자율화 단계에 필요한 원격에서의 모니터링 및 제어 필요성(Ship to Shore), 나아가 완전한 자율운항을 위한 고용량의 선박중심통신(Ship to Ship) 및 해양 객체와의 통신(Ship to Shore, Air, People)이 구현되어야 유무인 선박의 혼재 운항 과도기를 거쳐 완전한 자율운항 시대로 나아갈 수 있다는 점에서 이를 포괄하는 S2X(Ship to Everything) 통신 기술의 개발 당위성을 찾을 수 있다. S2X 통신은 정보 교환 상대를 신뢰할 수 있고 이를 기반으로 선박의 안전 운항 관련 정보를 상호 교환하고 부가 서비스를 위한 고용량의 데이터를 자유롭게 교환할 수 있도록 하는 선박중심직접통신 기술이 될 것이다.

• The Journal of the Korea Contents Association
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• v.7 no.4
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• pp.224-233
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• 2007

This paper analyzes if the rapidly increasing cyber universities' remote education provides services based on web accessibility standard and suggest the direction to reduce information difference between people. It selected 10 cyber universities recognized by the government and analyzed the application situation of the web accessibility using' A-Prompt', an evaluation and analysis tool for web accessibility focusing on factors that can be evaluated technically. It also compared it with $\ulcorner$cyber universities remote education web accessibility result$\lrcorner$ performed in 2006 to confirm if the accessibility is improved according to 'web contents accessibility instruction (KWCAG) 1.0. The result shows that the items such as the use of text and the support of supplementary explanation tool have improved. But it was analyzed that it is difficult for people to use web contents provided by domestic cyber universities. So the educational contents' accessibility application must be considered to solve such problems and publicize the remote education.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.05a
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• pp.899-902
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• 2009

As computer network and wireless technology continue to grow rapidly, a wide range of remote application has been applied to medical field such as remote medical consulting and remote patient monitoring. This research aims to design RF telecommunication-based healthcare application to collect and manage patient's physiological data, and describe the overall procedure of experiment. MySQL database is designed to record patient's physiological data including temperature, blood pressure and heart rate and save information about medical behaviors such as doctor's prescription for patients. Therefore, users approved by healthcare application can query patient's data and collected data can be used to reorganize data for clinical test. As a result, temperature and humidity of patient's room which must be checked frequently can be processed automatically through ubiquitous sensor network. The information entered from mobile phones or web is saved in database, ensuring systematical management through computer. Moreover, patient's family members can easily access hospital data, improving their experience with medical service.

• Proceedings of the Korea Contents Association Conference
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• 2004.11a
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• pp.402-407
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• 2004

Since the world wide web, simple and convenient tool, has proposed, the Internet became the most simple network resource which provide many informations of the world. Furthermore, various methodologies are developed to support the dynamic service such as 3D View web service. We will propose the volume rendering view program that interactively visualize the 3D data on the web. The 3D Data is obtained by stacking the 2D images along the z-direction. We also employ the COM based OCX control which is a kind of Active component. This web program will contribute the diagnosis of the diseases through the 3D visualization and image analysis functions at remote places.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.200-202
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• 2018

Emergency care provides primary care and stability for the patient in the early stages. It saves a patient's life and minimizes the risk until that treated in a hospital. In the recent years, An attempts have been made to convergence medical technology and IT technology to overcome the limitations of temporal, spatial, and medical technology applications. In this study, we established an environment for emergency information services. The developed smart application for emergency rescue activities support can easily identify emergency situation and First Aid. Then, it can be transmitted to a remote medical guidance doctor so that emergency treatment and hospital response can be performed quickly.

• Journal of the Korea Society of Computer and Information
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• v.8 no.4
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• pp.117-125
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• 2003

The proposed mechanism has an group management server, which manages the information about both the receivers and the senders. Any receiver can dynamically join/leave the multicast VC. The signaling overload due to group membership changes is not concentrated on the sender, but it is distributed to many receivers for the scalability improvement. The associated signaling messages propagates from the receivers to the ATM switch dedicated to the multicast VC, and hence no signaling overload exists in the shared links there is no latency for the receiver to wait. Our proposed scheme is superior in the view of scalability, the efficiency and the latency to other schemes.

• The KIPS Transactions:PartA
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• v.11A no.6
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• pp.439-450
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• 2004

Mobile agents are autonomous and dynamic entities that can migrate among various nodes in the network. Java's Jini framework facilitates mobile agent system development, providing hey features for distributed network programming. However, due to the security weakness, Jinil.0 service has a fundamental limitation on developing mobile agent systems which support secure remote communications. In this paper, we describe a Jini2.0-based secure mobile agent system named SecureJMoblet. On the top of Jini2.0, the system provides basic functionalities of a mobile agent system such as creation, transfer and control. In addition, with the SeureJS developed for secure JavaSpace service, SecureJMoblet supports a secure object repository and a reliable communication among mobile agents.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.10a
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• pp.279-281
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• 2017

In the recent years, An attempts have been made to convergence medical technology and IT technology to overcome the limitations of temporal, spatial, and medical technology applications. In this study, we established an environment for emergency information services. The developed smart application for emergency rescue activities support can easily identify emergency situation and First Aid. Then, it can be transmitted to a remote medical guidance doctor so that emergency treatment and hospital response can be performed quickly.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.10a
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• pp.670-672
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• 2021

The video streaming technologies are used in diverse areas including aerospace. UAV (Unmanned Aerial Vehicle) is still being developed so that we are able to use the UAV not only in military areas but also in civil areas. Remotely monitoring and observing a certain area is possible via using video streaming service based on the UAV nowadays. However, UAV is vulnerable to weather conditions, plane's weight, battery capacity and so on, which makes many restrictions of flight time and video streaming services. In order to prolong the video streaming services, we can use a number of UAVs, fly them one by one, and switch video streaming channels. In the paper, we propose the methods how to interchange UAVs' missions and their video streaming channels to provide seamless video stream services.

• Journal of Korea Spatial Information System Society
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• v.3 no.2 s.6
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• pp.45-51
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• 2001

It is difficult for existing construction support system to provide real-world information such as geographical and spatial data, geographic information system is expected to be able to supply efficiently analyzing and supporting function as well as actual data by connecting construction support system. Furthermore, the providing method and content of GIS are varied by building various network and information service, and use of web GIS which can offer diverse and dynamic solution on network is spreaded. In this study, information management system for construction works(CIMSGIS : Construction Information Management System on Web GIS) based on web GIS is developed, which can confirm instantly state of advance and manage construction progress by real-time reporting and instruction. Also CIMSGIS can support decision making on intuitive understanding and manifold operation reporting.