• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.05a
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• pp.473-476
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• 2003

Nowaday, Internet is doing the role of a large distributed information service tenter and various information and database servers managing it are in distributed network environment. However, the we have several difficulties in deciding the server to disposal input data depending on data properties. In this paper, we designed server mining mechanism and Intellectual data mining system architecture for the best efficiently dealing with input data pattern by using neural network among the various data in distributed environment. As a result, the new input data pattern could be operated after deciding the destination server according to dynamic binding method implemented by neural network. This mechanism can be applied Datawarehous, telecommunication and load pattern analysis, population census analysis and medical data analysis.

• Journal of Korean Library and Information Science Society
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• v.45 no.2
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• pp.235-260
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• 2014

This study aims to apply the concept of Internet of things to library and interpret a library as ecological space where human, thing and data are communicating and organically networking through internet. First, we defined various things existing in physical spaces of the real world and internet spaces as elements of Internet of Things. Then we proposed to apply a semantic web platform to integrate different meta-data formats and communication protocols from things. Finally, we provide the model of Internet of Things based on Semantic web to utilize a variety of information from things for library management and user service.

• Journal of KIISE:Information Networking
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• v.28 no.4
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• pp.631-640
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• 2001

Round robin scheduling discipline, which is a sort of frame-based scheduling, is quite simple and straightforward for handling multiple queues, and by putting a different weight on each queue, a network can offer differentiated services such as different bandwidth, or delay bound. The most typical algorithm among this disciplines is the weighted round robin(WRR). Also, WRR algorithm can be implemented efficiently by dynamic binary scheduling wheel(DBSW) architecture. This paper performs the analysis of the DBSW architecture and compares the results with simulation results. The analysis data and simulation data show that the DBSW structure decreases average buffer length because it is capable of maintaining the allocated weight of each VC correctly.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.23 no.1
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• pp.81-88
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• 2013

As social network service(SNS) has grown rapidly, the variety information being shared through SNS. However, the privacy of individuals can be violated due to the shared information through a SNS or the post written in the past at the SNS. Although, many researches concerned about it, they did not suggest key management and access control especially. In this paper, we propose the method for the protection of the message in SNS using access control and hash-chain.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.10a
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• pp.62-65
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• 2010

ITS(Intelligent Transportation System) is in order to better operate the public transportation. The thesis purpose to introduce how does city buses and underground vehicles input in server-side controls to connecting these two parts, that achieve share information between them. Ready provision of reliable, up-to-date and accurate transport information contributes towards efficient road use, better traffic flow, greater road safety and improved accessibility and promote efficiency in the city.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.49 no.1
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• pp.46-53
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• 2012

The WBAN technology means a short distance wireless network which provides each device's interactive communication by connecting devices inside and outside of body located within 3 meters. Standardization on the physical layer, data link layer, network layer and application layer is in progress by IEEE 802.15.6 TG BAN. It is necessary to develop the WBAN core technology that sensor node device, WBAN middleware and WBAN application service for WBAN environment. In this paper we designed the medical message structure and implemented medical application for purpose of vital information reliability. The message structure was proposed for WBAN environment and application can be check biometric information from BN on smart device through WBAN gateway.

• 한국벤처창업학회:학술대회논문집
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• 2016.04a
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• pp.65-66
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• 2016

본 연구는 국내 창업초기투자생태계의 현황을 진단하고 향후 진화의 방향과제를 도출하는 것이 목적이다. 2013년 정부의 투자중심 창업지원 생태계 구축정책에 힘입어 국내 창업초기 투자생태계는 보다 세분화되고 활성화 되고 있다. 종전의 엔젤투자와 VC 투자자로 양분되었던 벤처투자시장에, 특히 창업초기단계 개인엔젤투자조합, 전문엔젤, TIPS, 엑셀러레이터와 창업초기 전용VC 펀드인 인큐베이팅펀드와 청년창업전용투자펀드등에서 최근 마이크로VC펀드에 이르기까지 다양한 창업초기 VC 펀드가 창출되며 다양한 그룹의 투자자들이 생성 진화중이다. 이렇게 창업초기 다양한 투자자그룹이 생성되고 성장하고 있는 이면에는 정부의 매칭투자와 투자연계 R&D 자금이 큰 역할을 하고 있어 투자자들에게는 창업기업에게 Valuation과 투자 위험 관리에 큰 도움을 주고, 창업기업에게는 과도한 지분의 희석 없이 투자자금이 가진 장점의 혜택을 극대화하고 있다. 그러나 본 연구의 국내창업초기 투자생태계 진단결과, 국내 창업투자생태계는 다양한 투자자그룹이 생성되고 성장하고 있지만 서로 다른 투자자 그룹 간 공동투자나 후속투자 연계 등의 협업적 활동 및 회수네트워크 연계 등 활동은 아직 미흡하다. 또한 투자분야 자체가 모바일 및 인터넷서비스 분야에 집중되고 있어, 상대적으로 긴 시간의 보육과 성장검증기간 및 규모 있는 투자를 필요로하는 제조분야는 비중이 약한 편이어서 투자 대상 사업 분야의 다변화 필요하다. 뿐만 아니라 국내 창업초기투자생태계는 창업의 글로벌 사업성과를 내기 위한 글로벌 투자자들과의 연계구조는 미흡한 상황이어 이를 촉진할 방안이 요구된다고 할 수 있다.

• Journal of Digital Convergence
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• v.13 no.12
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• pp.193-202
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• 2015

The development of the security solutions that can provide a variety of security services is needed urgently. For development of the security solutions, analysis of international standard security technology is the key. In this paper, international organizations' standardization(ISO/IEC JTC1 SC27, ITU-T SG-17, IETF Security Area, etc.) and the current trend of the standard security technology are mainly analyzed. The core of the latest security technology(Application Bridging, DNS-based Authentication, HTTP Authentication, IP Security, Javascript Security, Authentication Technology Next Generation, Managed Incident, Web Authorization Protocol, Security Automation, Transport Layer Security, etc.) is analyzed focusing on 18 working groups of the IETF.

• Proceedings of the Korea Contents Association Conference
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• 2005.05a
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• pp.496-501
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• 2005

Recently, home network system is providing more various services as home robot applied. However for the existing home robot to it is not easy to install all functions because the size of robot device becomes larger and the management of contents and applications executed becomes uneasy. Moreover many improvements are necessary for function of robot's location awareness. In this paper, we propose more improved home robot system which uses resources of the robot efficiently as it divides the complicated operation of the robot among external digital device and recognizes the location of the robot by RFID.

• The KIPS Transactions:PartD
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• v.10D no.7
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• pp.1085-1092
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• 2003

The rapid growth of high speed multimedia services demands the large capacity of the server's storage that maintains the multimedia contents. Among the server's devices, the low I/O speed and physical or logical failure of storage device decrease the total performance of system. The continuous increase of multimedia contents require the flexibility of storage capacity. In order to solve the these problems, we propose the uses of software RAID and LVM techniques that provide the performance improvement and reliability of storage device and the flexibility of storage device respectively. In the LINUX 2.4 kernel, we implemented the reliable and flexible storage device and evaluated the performance of it.