• 대한원격탐사학회:학술대회논문집
• /
• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume II
• /
• pp.808-811
• /
• 2006

The KOMPSAT-2 was developed by KARI and it was successfully launched from Plesetsk, Russia on 28th July 2006. The Korean government decided the commercialization of the KOMPSAT-2 image data and direct reception services worldwide. SPOT Image, based in Toulouse (France) was selected by KARI through an international open bidding as a foreign company for the KOMPSAT-2 image promotion over the entire world except the territory of Republic of Korea including the North Korea, the United States of America, UAE, Saudi Arabia, Kuwait, Qatar, Oman, Yemen, Egypt, Iran, Iraq, Jordan, Lebanon, and Syria. KAI (Korea Aerospace Industry Ltd.) is an engaged Korean company for this area. KARI has responsibility to operate the satellite, data acquisition, archiving for the worldwide commercialization. For the processing and delivery of the KOMPSAT-2 image data to the users of KAI and SPOT Image, KAI has the binding contract with KARI. So KAI has the responsibility for the commercial ground station operation such as user support, data processing, and the data delivery. The KOMPSAT-2 ground station is hosted in KARI, so KARI has developed the concept of KOCUST (KOMPSAT-2 Commercial User Support Team) jointly with KAI to support the data processing and delivery as KOMPSAT-2 developer and satellite operator. The main purpose of the KOCUST is to support the operational activities to provide the data and service quality to satisfy customers. KOCUST will be organized by the members of KARI and KAI together. KARI members will mainly take the role of KOCUST coordination, data processing and user support in a public sector. KAI members are going to take user desk, data validation and delivery et cetera, which are related with users. This paper describes a summarized concepts of KOCUST like organization, dedicated tasks of each part and work flow of daily operation.

• 한국정보통신학회논문지
• /
• 제11권9호
• /
• pp.1793-1798
• /
• 2007

헬스케어는 정보통신기술을 활용하여 원거리에서 대상자들의 건강상태에 대한 모니터링과 홈 기반의 보건의료 서비스를 제공하는 것이라 할 수 있다. 따라서 헬스케어 서비스는 응급상황 대처를 위한 경보서비스와, 진료자 및 가족에게 대상자와 댁내 환경을 모니터링 할 수 있는 원격지원 서비스로 분류할 수 있다. 여기서, 일반적인 유선 기반의 고정형 생체계측 시스템에서는 두 가지 서비스를 위해서, 실시간으로 높은 신뢰성을 갖는 데이터를 전송하는데 한계가 있다. 그러므로 대상자가 공간적으로 구속을 받지 않고 자유롭게 이동하면서 생체신호 계측 및 응급경보가 가능하도록, 무선 네트워크 환경에서 구현되는 휴대용 헬스케어 시스템을 구현하고자 한다.

• 한국농촌간호학회지
• /
• 제4권1호
• /
• pp.51-57
• /
• 2009

Purpose: This study was done to learn from the development of rural health nursing in developed countries. Method: A literature search was done using keywords such as "rural and nursing" or "rural and health" from the database CHINAL and website of institutions related to rural health and nursing. Results: In Australia, the type of rural health institution was categorized according to the population size and nursing service was done differently according to area. It is unique to Canada to have the Canadian Association of Rural and Remote Nursing, which published the survey report "the Nature of Nursing Practice in Rural and Remote Canada". In the U.S., the role of nurse practitioners in rural communities was relatively well developed and a diverse nursing care model was demonstrated. To improve health care access in rural communities, financial and political support by the governments has been part of long-term plans in the three countries. Conclusion: It is very informative to identity the difference and similarity in rural health nursing in three developed countries. For the future development of Korean rural nursing, suggestion can be made in terms of research, education and policy development.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제10권10호
• /
• pp.5074-5094
• /
• 2016

Screen splitting is one of the fundamental tasks in different methods including video and image compression, screen classification, screen content coding and the like. These methods in turn support various applications in data communications, remote screen sharing, remote desktop delivery to assist teaching-learning, telemedicine, Desktop as a Service etc. In the literature we find systems requiring splitting assumes a fixed size split that do not change dynamically, also there is no analysis why that split is chosen in terms of performance. By doing mathematical analysis this paper first finds the efficient splitting schemes that can be easily automated to make a system adaptive. Thereafter, taking the screen motion detection as a case study, it demonstrates the effects of various splitting methods on motion detection performance. The simulation results clearly shows how classification performances varies with different splitting which will facilitate to choose the best splitting for a specific application scenario as well as making the system adaptive by providing dynamic splitting.

• International Journal of Computer Science & Network Security
• /
• 제22권3호
• /
• pp.163-172
• /
• 2022

The interconnection of an enormous number of devices into the Internet at a massive scale is a consequence of the Internet of Things (IoT). As a result, tasks offloading from these IoT devices to remote cloud data centers become expensive and inefficient as their number and amount of its emitted data increase exponentially. It is also a challenge to optimize IoT device energy consumption while meeting its application time deadline and data delivery constraints. Consequently, Fog Computing was proposed to support efficient IoT tasks processing as it has a feature of lower service delay, being adjacent to IoT nodes. However, cloud task offloading is still performed frequently as Fog computing has less resources compared to remote cloud. Thus, optimized schemes are required to correctly characterize and distribute IoT devices tasks offloading in a hybrid IoT, Fog, and cloud paradigm. In this paper, we present a detailed survey and classification of of recently published research articles that address the energy efficiency of task offloading schemes in IoT-Fog-Cloud paradigm. Moreover, we also developed a taxonomy for the classification of these schemes and provided a comparative study of different schemes: by identifying achieved advantage and disadvantage of each scheme, as well its related drawbacks and limitations. Moreover, we also state open research issues in the development of energy efficient, scalable, optimized task offloading schemes for Fog computing.

• 서비스연구
• /
• 제1권1호
• /
• pp.103-111
• /
• 2011

모바일 컴퓨팅의 르네상스 시대를 이끌어가고 있는 스마트폰은 조만간 전 세계의 휴대폰 시장을 점령할 것으로 예상되고 있으며, 특히 안드로이드 플랫폼 기반 스마트폰에 대한 수요가 급격히 상승하고 있다. 이에 따라 스마트폰 사용자를 위한 다양한 애플리케이션 서비스 모듈이 개발되고 있으며, 이들이 서비스 혁신에 기여하고 있다. 한편 모바일 기능을 지원하는 LBS(즉 Location Based Service) 시스템에 대한 기술 지원 및 기술의 개방으로 이와 관련한 많은 애플리케이션이 등장하는 추세이다. 우리는 이 LBS 시스템으로 운전자에 대한 교통사고 발생시 위치 정보 전송을 중점적으로 활용하고, 또한 운전자에게 여러 편리성을 제공하기 위하여 Driver Manger 서비스 모듈을 연구하였다.

• 한국컴퓨터정보학회논문지
• /
• 제16권1호
• /
• pp.117-124
• /
• 2011

본 논문은 생체 센서 시스템(bio-physical sensor system)을 이용하여 홈 네트워크 시스템을 구성하고, 생체 신호가 전달되도록 생체 신호 원격용 네트워크를 구현하였다. 측정 시스템의 구성조건은 시각(Vision), 체성감각(Somatosensory), 전정기관(Vestibular), 중추신경계통(CNS)의 변위점에서 평가하고, 맥박(Heart Rate), 체온(Temperature), 체중(Weight)을 기본 측정항목에 사용하였다. 주파수 변동에 따른 0.01 단위로 측정하여 평균값을 가지고 기준치에 비교하여 설정환경을 구성하고 측정값을 결정하였다. 생체 신호는 신체의 균형조절기능인 신경생리학적 감각처리 및 운동 출력기전으로 시각, 체성감각, 전정기관, 중추신경계통, 체질량지수(BMI)의 신체적 감각 기관의 수용체들 간의 운동에 대한 균형과 자세를 통한 기준으로 정상적인 균형 조절 상태와 균형의 크기 형태로 구분하고, 건강의 상태를 확인하도록 의미를 부여하였다. 본 연구의 결과로 제안한 홈 네트워크를 통해 헬스 센터 및 건강관리 중앙 시스템에 단말기를 통하여 전송됨으로 전문가을 통한 건강 관리시스템이 진행되는 결과를 얻을 수 있고, 다양한 신체적 파라메타를 통한 원격네트워크 모니터링 기능의 관리시스템이 형성 될 것으로 추론 할 수 있다.

• 농촌계획
• /
• 제15권4호
• /
• pp.199-211
• /
• 2009

The aim of this paper is to investigate the applicability of high spatial resolution remote sensing images for conducting the rural amenity resources survey. There are a large number of rural amenity resources and field reconnaissance without a sufficient preliminary survey involves a big amount of cost and time even if the data quality cannot always be satisfied with the advanced study. Therefore, a new approach should be considered like the state-of-the-art remote sensing technology to support field survey of rural amenity resources as well as to identify the spatial attributes including the geographical location, pathway, area, and shape. Generally high-resolution satellite or aerial photo images are too expensive to cover a large area and not free of meteorological conditions, but recently rapidly-advanced internet-based image services, such as Google Earth, Microsoft Bing maps, Bluebirds, Daum maps, and so on, are expected to overcome the handicaps. The review of the different services shows that Google Earth would be the most feasible alternative for the survey of rural amenity resources in that it provides powerful tools to build spatial features and the attributes and the data format is completely compatible with other GIS(Geographic information system) software. Hence, this study tried to apply the Google Earth service to interpret the amenity resources and proposed the reformed work process conjugating the internet-based high-resolution images like satellite and aerial photo data.

• International Journal of Internet, Broadcasting and Communication
• /
• 제8권1호
• /
• pp.19-26
• /
• 2016

In this paper, the existing domestic HVAC systems, devices TCP / IP does not support the most, thereby, not performed remote management, it is necessary to regularly field service, inefficiency and cost bring a burden. This is through a comparison of the IoT-based primary, real-time protocol of what has become a hot topic recently, to be able to control and real-time monitoring through the CCU device in the HVAC system. Compare for this Internet of Things device for real-time monitoring and control of the XMPP, CoAP, MQTT main real-time protocol is used on. Finally, flexibility, light weight, based on MQTT a two-way messaging protocols with reliable message delivery, implements the protocol on the real-time HVAC system in the cloud platform.

• 한국정보처리학회논문지
• /
• 제6권10호
• /
• pp.2649-2658
• /
• 1999

This paper proposes a new solution to support Internet Multicast for mobile hosts. The proposed algorithm is based on the remote subscription approach of IETF Mobile IP that mobile node re-subscribes to its desired multicast groups while at a foreign network. In addition, we adopt the bi-directional tunneling to minimize the disruption of multicast service due to movement of a host from network to another. This paper also analyzes the handoff latencies and data packet loss amount of our algorithm and compares to other approaches. Our analysis shows that the proposed algorithm has good robustness, scalability and routing efficiency.