• 한국BIM학회 논문집
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• 제6권1호
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• pp.25-32
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• 2016

In BIM environments for infrastructures, civil structures such as road, bridge and tunnel etc., created into 3D objects, integrated with their properties, securing BIM design productivity is very critical during 3D modeling. To solve this issue, configuring BIM libraries so that the users can utilize prefabricating in advance 3D objects that have been applying repeatedly during BIM design is essential so much. Current BIM libraries have made focused on Ready-Made for architectural facilities. However, establishing environment for delivering BIM library for civil facilities is very sparse. Accordingly, this study developed a web-based sharing system for delivering BIM library contents based on standardized drawing for civil area. To do this, we have analyzed core features and operation system of BIM library sharing system in domestic and overseas. Besides, functional requirements that are necessary for developing BIM library sharing system was derived, and through operation scenario configuration, the web-based system was developed according to the detailed mechanism. It is expected that this system can enhance BIM design productivity during library based modeling, and can be utilized as construction supporting tools that can help construction managers to make a design change.

• 디지털산업정보학회논문지
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• 제11권1호
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• pp.89-96
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• 2015

The various services applied internet have been provided by the rapid development of wireless networks and providing multimedia contents are also increasing. It is caused a number of problems such as increasing of network traffic rapidly. P2P technique is gaining popularity for solving these problems. In particular, P2P technique in a wireless network environment has gained much popularity. Among them, MANET-based P2P techniques has been studied actively. It is not easy to be applied the existing technique as it is due to the dynamic topology and low bandwidth by moving nodes in MANET that is consisted of only mobile nodes. In this paper, we proposed sharing group construction technique for providing a stable connection between mobile nodes and reducing the load of network traffic and overhead of sharing group reconfiguration in order to improve data transmission performance between mobile nodes. The sharing group member nodes applied virtual sharing group generation technique with neighboring nodes of 1-hop distance in order to reduce traffic for file sharing. We performed comparative experiments with DHT technique to evaluate the performance of the proposed technique in this paper and the excellent performance is confirmed through experiments.

• 지식경영연구
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• 제10권2호
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• pp.85-103
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• 2009

Web 2.0, characterized as openness, sharing, and participation, has enabled Internet users to easily generate a variety of contents, and to share them through Web 2.0 services. Knowledge search service (KSS) is positioning itself as one of typical Web 2.0 services. Yet, few studies have sharpened our understanding of users' knowledge sharing behavior in the KSS environment. In order to address this knowledge void, this paper attempts to explore antecedents of their usage behavior in the KSS environment. Typically, they utilize stored knowledge and share their knowledge simultaneously. Considering this characteristic, our study regards service usage intention and knowledge sharing intention as final dependent variables. This study advances a research model based on Bhattacherjee's expectation-confirmation model, which is expanded by incorporating trust belief. Because of the openness of KSS, trust belief is believed to play a critical role in forming users' service usage intention and knowledge sharing intention. Furthermore, this study examines the difference of the antecedents' effects in terms of users' gender. We collected data from 275 respondents who have experience in using KSS. PLS (partial least squares) was employed for the analysis of the data. Analysis results confirm the important role of user satisfaction and trust belief in the formation of users' service usage intention and knowledge sharing intention. More importantly, trust belief has a more salient effect on knowledge service usage intention than user satisfaction. This study also shows the moderating role of users' gender. Finally, this paper provides managerial guidance on strategic planning aimed at improving users' service usage intention and knowledge sharing intention in the KSS environment.

• 한국도서관정보학회지
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• 제39권1호
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• pp.299-318
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• 2008

도서관 목록을 통해 제공되는 서지정보는 더 정확하고 다양한 정보를 요구하는 이용자에게 원하는 정보를 제공하는 데 있어 일정정도 한계를 가질 수밖에 없다. 이에 대한 해결방안의 하나는 자료에 대한 목차 정보를 제공하는 것이다. 그러나 목차 정보는 개별 도서관에서 자체적으로 구축되고 있기 때문에 자료 중복에 따르는 비용과 인원의 낭비라는 문제점이 지적되고 있다. 따라서 이와 같은 문제의 해결을 위해서는 표준화된 목차 정보 DB를 구축하고 각 기관 간에 공동 활용 및 공유 방안이 마련되어야 한다. 이와 함께, 중앙 기관이 중심이 되어 표준화된 DB 구축 입력방식, 구축 목차 정보의 변환 프로그램을 제공하고, 도서관 간에 DB 분담 구축과 관련된 상호 공유 원칙 등이 마련될 필요가 있다.

• 지식경영연구
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• 제5권1호
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• pp.19-38
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• 2004

The present paper examines the effect of "community of learning" factors as well as learning and contextual factors on the e-learning performance empirically. The concept of community of learning, which was derived from community of practice, has not been emphasized in previous studies on e-learning. Data were collected from 226 people who had experienced e-learning and multiple regression analysis was used to analyze the data. The results are as follows; First, learning motivation and appropriateness of learning contents, ease of system use, and knowledge sharing have a positive effect on learner's satisfaction. Whereas, learning motivation, appropriateness of learning contents, ease of system use, knowledge sharing, and activated communication are appeared to affect the ability of performing tasks significantly.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2003년도 춘계종합학술대회논문집
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• pp.443-448
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• 2003

이동통신이 대중화되면서 서비스확장을 위해 무분별하게 기지국 건설함으로써 발생하는 기지국간의 중복투자 및 자연훼손을 방지하기 위하여 정통부에서는 기지국 공용화를 요구하였다. 본 연구에서는 지하철 역사내에 설치된 공용중계기에서 발생되는 전원 불량등의 장애 요인 및 장비, 시설 불량 또는 지하철 터널 구간에서 발생되는 통신 서비스에 대한 문제점을 조사하여 분석하였다. 본 논문의 내용은 공용화 서비스에서 높은 품질의 서비스를 제공하고 앞으로 추진될 IMT-2000 또는 제4세대 이동통신 공용화에 중요한 기초자료가 될 것이다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 신호처리소사이어티 추계학술대회 논문집
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• pp.259-262
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• 2003

A efficient P2P (peer to peer) networking for sharing multimedia contents is proposed to overcome the limitations of unstructured approaches. The proposed approach is attempting to organize the participating P2P nodes by modifying a n-dimensional cartesian-coordinate space DHT (distributed hash table), CAN (content addressable network). The network identifiers (e.g., network prefix of IP address) of participating nodes are mapped into the CAN virtual coordinate space (in 2-d) and nodes with similar identifiers are grouped into the same zone. The proposed scheme is expected to show some level of concentration reflecting the network identifiers. Network simulator-based evaluation is performed to verify the effectiveness of the proposed scheme.

• 한국콘텐츠학회논문지
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• 제4권3호
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• pp.53-60
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• 2004

본 논문에서는 Threshold PKC를 이용하여 패스워드 사전공격에 안전한 사용자인증 및 키분배 방법을 제안한다. 신뢰기관의 개인키를 (t,n) 비밀분산을 이용하여 n개의 서버에 분산 저장시키고 서며가 사용자를 인증할 때 t개 이상의 서버가 협력하여 사용자의 패스워드 검증자를 복원한다

• 디지털콘텐츠학회 논문지
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• 제4권2호
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• pp.139-146
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• 2003

본 논문은 ERA(Error Recovery Agent)의 설계와 구축을 설명한다. ERA는 멀티미디어 원격 교육 시스템에서 소프트웨어 오류를 감지, 공유, 복구하기에 적합한 시스템이다. 이 시스템은 ED, ES, ER로 구성되어 있다. ED는 훅킹 기법으로 오류를 감지한다. ES는 멀티미디어 원격 교육 시스템에서 오류를 공유하는 에이전트이다. ER은 오류를 복구하는 에이전트이다. 본 논문에서는 멀티미디어 공동 작업 환경에서 하나의 오류 응용을 미디어로 취급하고 복구하는 방법을 제안한다.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2001년도 Bulletin of The 5th Asian Design Conference International Symposium on Design Science
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• pp.55.1-55
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• 2001