• Proceedings of the Korea Information Processing Society Conference
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• 2002.04b
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• pp.1281-1284
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• 2002

OAI는 간단한 프로토콜을 정의함으로써 디지털도서관 사이의 상호이용의 문제점을 해결하기 위해 제시된 프로토콜이다. OAI를 통해 디지털도서관사이의 상호이용을 가능하게 하기 위해, 디지털도서관이 가지고 있는 컨텐츠에 대한 메타데이터를 제공하기 위한 data provider와 이를 수집하여 유용한 서비스를 제공하기 위한 service provider라는 두개의 프레임웍이 필요하다. 본 논문에서는 OAI protocol을 따르는 많은 data provider들이 가지고 있는 정보들을 수집하고 수집된 정보를 통해 새로운 서비스를 제공하는 service provider의 기능을 설계 및 구현하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.11a
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• pp.718-721
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• 2012

PMIPv6 (Proxy Mobile IPv6)는 네트워크 기반 이동성 지원 프로토콜로 MN (Mobile Node)의 이동성 프로토콜 스택 유무와 관계없이 MN의 이동성을 지원한다. 하지만 핸드오버 과정에서 이동성 관련 시그널링을 완료할 때까지 지연이 발생하고 핸드오버 동안 MN으로 향하는 패킷이 손실된다는 단점을 갖고 있다. 이러한 단점을 보완하기 위한 기법으로 FPMIPv6 (Fast Handover for PMIPv6)가 제안되었다. 본 논문에서는 PMIPv6의 오픈소스인 OAI PMIPv6 (OpenAirInterface PMIPv6)를 기반으로 FPMIPv6 테스트베드를 구축하고 MN의 핸드오버를 실험하여 실제 FPMIPv6 환경에서의 핸드오버 지연 및 패킷 손실 정도를 측정한다.

• Proceedings of the Korean Library and Information Science Society Conference
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• 2004.06a
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• pp.99-124
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• 2004

• Proceedings of the Korea Information Processing Society Conference
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• 2002.11c
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• pp.2415-2418
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• 2002

인터넷이 급속히 발전하고 확산되면서 정보를 효율적으로 활용하고 유통시키기 위한 연구가 활발히 진행되고 있다. OAI(Open Archives Initiative)에서는 대용량 정보를 메타데이터를 이용하여 공유하고 검색할 수 있는 프로토콜 및 임프라에 대한 연구와 표준화를 추진하고 있다. 또한 EMAF(An Extensible Multi-Agent Framework)에서는 멀티에이전트를 이용한 정보 유통 및 활용한 대한 연구가 진행중이다. 이에, 본 논문에서는 메타데이타과 XML, 멀티에이전트를 이용한 분산검색 시스템을 설계하고 구현하였다. 본 시스템은 조정에이전트와 응용에이전트로 구성되고 에이전트간 통신에는 XML과 OAI의 메타데이타 하비스팅 프로토콜을 응용하였다. 메타데이터에 대한 검색을 수행하여 검색 성능을 높일 수 있었으며 또한 사용자가 입력한 문장 단위의 질의를 처리할 수 있는 기능과 관련어를 추출할 수 있는 기능도 제공한다.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2015.05a
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• pp.228-229
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• 2015

In this research, properties of new crack repair materials using organic and inorganic composites (OAI) were investigated under various crack conditions. Especially, this study aims to develop new composites repair materials as needed to follow the crack and its repair method. Crack repair methods such as injection method and surface treatment repair method using self-healing capability for the practical industrial application were examined in comparison with normal crack repair method as a epoxy injection. From these results, it was confirmed that the sealing and injection effects through the cracks from field tests could be improved by OAI.

• Proceedings of the Korea Information Processing Society Conference
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• 2019.10a
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• pp.211-212
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• 2019

Slicing Radio Access Network (RAN) can help in effectively utilizing the network bandwidth and to better manage the increasing traffic over interent. RAN slicing system discussed in this paper is based on an open-source slicing mechanism in which we write a JSON configuration file for slicing policy and send it to the FlexRAN controller. FlexRAN controlls the core networks (CNs) through OAI-RAN on the evolved packet core (EPC) component of this system. Each CN is responsible for handling a saperate RAN slice. The type of internet traffic is identified by the FlexRAN crontroller and is sent to the respective CN through OAI-RAN. CN handles the traffic according to the allocated bandwidth and in this way the internet traffic is sliced inside the EPC component.

• 한국HCI학회:학술대회논문집
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• 2007.02a
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• pp.1051-1056
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• 2007

In current web-based systems, it is generally recognized that one way flow of information from providers to users can cause the static problem of document structure. Therefore, information update frequency and interaction between providers and users are quiet slow. Monopolized information can obstruct the free user's access and heterogeneous format and different protocols also make users difficult to retrieve and to collect information. To resolve these problems, in this study, we introduce the Web 2.0 to move toward the user's participation and share based on the social network and the OAI protocol to improve the free access and the interoperability on bibliographic information for Life Science and then design the bibliographic information network for life science. This network has four main functions such as: 1) Open Repository function that can make up user community for sharing and data exchange. Data such as article, seminar material, research note and research report are considered in design. 2) Open Collection function that can collect and store the metadata on distributed bibliographic information networks, 3) Open Access function that can manage the metadata in the open access environment, and 4) Administration function that can monitor the user activity and statistics and can inspect the registered data.

• Journal of the Korean Society for Library and Information Science
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• v.38 no.4
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• pp.291-310
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• 2004

Institutional Repository offers integrated capture, management. preservation and access intellectual asset of individual institution and is also considered as a strategy to disseminate and exchange intellectual output as part of global 'Knowledge Bank'. A case of Institutional Repository, 'dCollection,' was introduced in Korea Education & Research Information Service(KERIS) as an institutional repository solution. This paper drew related issues in order to apply institutional repository to domestic universities. The results will bring a paradigm shift in scholarly communications, as a guideline of institutional repositories in the university libraries.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.15 no.1
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• pp.91-116
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• 2004

This study is carried out as a precedent work for the implementation of an Open Access Initiative(OAI) compatible with Korean libraries. Institutional Repository is a new concept for collecting, managing, disseminating, and preserving scholarly works created in digital form by faculty and researchers in individual organizations according to open access paradigm. This study briefly outlines the need for Institutional Repository, their role, constitutional elements, benefits and drawbacks. This is followed by recent case studies of SHEPRA, Dspace, eDoc Server and dCollection. The conceptual model of Institutional Repository was suggested and the key considerations to be taken into account for the successful implementation of Institutional Repository at the beginning stage were proposed from a stakeholder's perspective.

• Journal of Korean Library and Information Science Society
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• v.38 no.3
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• pp.297-320
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• 2007

This study examined the main concepts of SOA and Web Services, and conducted technical analysis of major Web Services protocols such as SOAP, REST, SRW/U, and OAI-PMH that realize SOA, and suggested examples of SOAP and REST based Web Services establishments in foreign and domestic libraries respectively. In addition, it introduced application examples of Library 2.0 using Web 2.0 technology in foreign and domestic libraries and suggested how to apply SOA based Web Services protocol in Library 2.0. Finally, it proposed how to put Library 2.0 into practice applying meta-searching system integrating library OPAC, online bookstores, web portal sites and library union catalogs using REST based Open API.