• Proceedings of the Korean Society for Information Management Conference
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• 2013.08a
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• pp.67-70
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• 2013

국내 전자학술지에서 현재 논문 보조자료를 제공하고 있는 학술지는 총 1640종 중 52종이며, 학문 분야별로는 의약학 분야가 35종(21.6%), 자연과학 분야가 12종(12.8%), 공학 4종(2%) 순으로 나타났다. 보조자료 보유 종수의 대부분을 차지하는 의약학 분야, 특히 Synapse에서 서비스되고 있는 논문 보조자료 최근 5년간 현황을 살펴보면, 총 41종의 학술지, 총 109건의 논문에서 논문 보조자료를 보유하고 있었다. 보조자료의 자료 유형은 pdf 형식이 59%로 절반 이상을 차지하고 있었고, 이어서 동영상 파일 유형이 28%를 차지하고 있었다. 본 연구는 국내 전자학술지 현황을 조사 분석한 기초 연구이다. 이를 바탕으로 향후 국내 전자학술지 논문 보조자료를 원활하게 활용할 수 있는 실질적인 방안 모색이 강구되어야 할 것이다.

• Journal of the Korea Society of Computer and Information
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• v.27 no.7
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• pp.101-108
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• 2022

We propose an intrusion detection model that detects denial-of-service(DoS) and distributed reflection denial-of-service(DRDoS) attacks, based on the empirical data of each internet of things(IoT) device by training system and network metrics that can be commonly collected from various IoT devices. First, we collect 37 system and network metrics from each IoT device considering IoT attack scenarios; further, we train them using six types of machine learning models to identify the most effective machine learning models as well as important metrics in detecting and distinguishing IoT attacks. Our experimental results show that the Random Forest model has the best performance with accuracy of over 96%, followed by the K-Nearest Neighbor model and Decision Tree model. Of the 37 metrics, we identified five types of CPU, memory, and network metrics that best imply the characteristics of the attacks in all the experimental scenarios. Furthermore, we found out that packets with higher transmission speeds than larger size packets represent the characteristics of DoS and DRDoS attacks more clearly in IoT networks.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.11 no.6
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• pp.275-282
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• 2011

Current service discovery protocols such as UPnP, Jini, SLP provide the basic function which is message exchange pattern, service representation and description, in service discovery. They does not guarantee service interoperability among service discovery. Therefore, in this paper, we design and implement CLAM (Component-based Autonomic Layered Middleware) agent platform to enable an efficient service discovery through extension of DF agent function in FIPA-compliant specification. Also, we propose an efficient service discovery mechanism using DHT-Chord algorithm to guarantee scalability and interoperability in DF agent.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.7
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• pp.1350-1357
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• 2012

Korean NDGPS, which consists of the ocean-based reference station of 11 site and the land-based reference station of 6 sites, are operating. The land-based reference stations provide the output power of 500W, the service shadow regions are occurred due to mountains and nation topography. In this paper, the service coverages of land-based reference stations are analyzed in the viewpoint of output power enhancements of land-based reference stations within 1KW. Also, we suggest virtual land DGPS reference stations 2 sites to resolve the service shadow regions.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.4
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• pp.831-840
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• 2010

While Wireless Internet services were activated, many users got possible to use various Internet services without limitation in location. In particular, the demands to Wireless Internet Services are getting expanded because mobile devices that support high mobility are getting smarter. However, if a user uses various wireless networks, much limitation occurs in network setting when they move to another network. This is because there are few appropriate Handover Mechanisms to support Heterogeneous Network. So, this paper propose that Fast-Handover for Vertical Network Handover with MIH in PMIPv6 to support heterogeneous network and to reduce the handover latency time. Analysis result presented in this paper shows that by carefully selecting suitable system configuration model and parameters, suggestion has reduced latency time of 26% and packet losses of 90% (Avg.) at the maximum in comparison with original PMIPv6 handover.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.2
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• pp.1-7
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• 2019

Recently, multimedia streaming service has been activated, and the demand for high-quality multimedia convergence contents services is predicted to increase significantly in the future. The issues of the increasing network load due to the rise of multimedia streaming traffic must be addressed in order to provide QoS guaranteed services. To do this, an efficient network resource management and mobility support technologies are needed through seamless mobility support for heterogeneous networks. Therefore, in this paper, an MIH technology was used to recognize the network situation information in advance and reduce packet loss due to handover delays, and an ACLMIH-FHPMIPv6 is designed that can provide an intelligent interface through introducing a hierarchical mobility management technique in FPMIPv6 integrated network.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.49 no.1
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• pp.1-10
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• 2012

Mobility and quality of service (QoS) are becoming the more important issues in wireless communications. The traditional Internet service is expanding into new access media and applications. Since wireless communication services are accompanied by frequent handovers at remote sites, scalable and fast handover has become a prerequisite for ubiquitous communication. In this paper, the differentiated service (Diffserv) model is deployed in heterogeneous proxy mobile IPv6 (PMIPv6) networks to satisfy the QoS guaranteed service and fast handover requirements. The operational procedures for QoS guaranteed global roaming are presented. In addition, QoS management and handover cost evaluation schemes based on a mobile host's movement scope are proposed. This paper analyzes the reduction in handover delay in a network-based localized mobility management framework. We propose and analyze a PMIPv6 optimized with a global mobile access gateway (G-MAG), which is a network-based entity, to further improve the handover performance in terms of handover delay while maintaining minimal signaling overhead in the air interface among converged heterogeneous wireless networks. The handover signaling procedures with host-based MIPv6 are compared with network-based proxy MIPv6 (PMIPv6) and fast PMIPv6 assisted by G-MAG to show how much handover delay reduction can be achieved. Analytical results show that the handover delay is significantly reduced.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10c
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• pp.346-348
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• 2004

현재, 인터넷이 정보화 사회의 핵심 인프라로 자리를 매김에 따라 사용자가 폭발적으로 증가하게 되었고, 이로 인한 주소 부족 현상이 심화되고 있다. 한편, 국방정보통신망에서도 통신대상의 증가 및 서비스 품질보장, 전술통신체계의 이동성 및 생존성 보장을 요구하고 있다. 이러한 변화는 주소부족 문제 해결, 이동성, 보안성, QoS 보장 서비스 등 다양한 기능 지원이 가능한 IPv6의 도입이 요구된다. 이에 따라 국방정보통신망에서의 IPv6 도입 전략에 대한 연구가 진행되었다. 이미 시작된 IPv6 도입 전략과 연계하여 본 논문에서는 우리 군에 IPv6로의 전이를 효과적으로 지원하기 위해 웹 기반 IPv6 전이 지원 시스템을 설계하고자 한다. 그리고 설계된 체계를 활용하여 국방정보통신망 시스템 자원을 기반으로 IPv6 전이 지원 절차에 따라 점검 자원 DB를 구축한다. 웹 상에서 IPv6로의 전이 요청 부대 실무자가 전산자원에 대한 전이절차 정보 및 예산산출 정보를 지원 받음으로써 IPv6로의 전이를 체계적이고 신속하게 지원하게 된다.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.39 no.6
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• pp.491-496
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• 2021

In line with the modern era in which the safety of underground facilities and the use of underground information are increasingly emphasized, the state is pushing for more precise and accurate underground spatial information to be secured and utilized. Therefore, we need to pay more attention to subsurface geospatial data. In the future, the Ministry of Land, Infrastructure and Transport will actively utilize the 15 types of Integrated Underground Geospatial Information Map(6 types of underground facilities, 6 types of underground structures, 3 types of ground) that the Ministry of Land, Infrastructure and Transport is building as three-dimensional underground spatial information, and contribute greatly to improving national safety and convenience in underground construction. expected to do However, when a site manager requests an Integrated Underground Geospatial Information Map with a mobile device, if the large-capacity integrated underground space map is not quickly transmitted over the wireless section and is not serviced, it causes inconvenience to the site manager and delays work. In this paper, the goal of this paper is to enable field managers to quickly receive a tiled Integrated Underground Geospatial Information Map with minimal information exchange. Therefore, the tiling system is configured according to the dataset for high-speed Mobile Integrated Underground Geospatial Information Map transmission. In addition, a transmission system for the Mobile Integrated Underground Geospatial Information Map is established, and a TCP/IP (Transmission Control Protocol/Internet Protocol)-based spatial information tiling transmission protocol dedicated to the on-site Integrated Underground Geospatial Information Map is developed.

• Digital Contents
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• no.9 s.136
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• pp.61-67
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• 2004

한국데이터베이스진흥센터가 주관하는 2004년 제1차 공공기관 우수 데이터베이스(DB) 시상식이 지난달 20일 한국관광공사빌딩 지하 강당에서 개최됐다. 지난해 통계∙기상∙기업∙법률∙특허 등 5개 분야 DB 10종을 우수DB로 선정한 한국데이터베이스진흥센터는 올해 공공기관 DB를 대상으로 우수DB 6종을 선정했다. 이번에 선정된 공공기관 우수DB 6종은 재정경제부, 문화관광부, 산업자원부, 건설교통부와 산하 공 공기관에서 운영하고 있는 데이터베이스 가운데 건설교통, 경제산업, 문화예술 등 3개 분야에서 품질이 우수한 각 2종씩의 DB가 선정됐다. 건설∙교통 분야에서는 한국도로공사의‘로드플러스’와 건설교통부의‘건설교통종합정보센터’가 선정됐고, 경제∙산업 분야에서는 조달청의‘나라장터’와 한국은행의‘경제통계시스템’, 문화∙예술 분야에서는 한국관광공사의‘Visit Korea’와 문화재청의‘국가문화유산종합정보서비스’가 선정됐다. 한국데이터베이스진흥센터는 올 11월경 정보통신, 교육학술, 과학기술분야를 대상으로 제2차 우수 DB를 선정할 계획이며, 자세한 내용은 데이터베이스품질평가센터(www.dbq.or.kr)에서 소개하고 있다.