• Proceedings of the Korea Information Processing Society Conference
• /
• 2013.05a
• /
• pp.79-82
• /
• 2013

현재 널리 사용되는 클라우드 스토리지 서비스들의 파일 동기화 기능에 있어 적게 변경된 파일 또는 이름만 변경된 파일에 있어 동기화 시 전체를 전송하는 문제가 있다. 또한 사용자들 간 동일한 파일이 존재함에도 불구하고 전체를 전송하는 문제가 있다. 이러한 문제를 해결하기 위해 본 연구에서는 이중 레벨 메타데이터를 사용한 중복 제거 동기화 시스템을 구현하였다. 주요 아이디어는 VLC(Variable-length Chunking)를 사용하여 중복되지 않은 데이터만 전송하며 서버는 글로벌 메타데이터를 유지하여 사용자 간 중복된 데이터를 검출하는 것이다. 실험 결과로 부분 추가/삭제된 파일 전송 시 제안한 시스템이 네트워크 대역폭과 시간을 감소시키는 것을 보였다.

• International Journal of Internet, Broadcasting and Communication
• /
• v.14 no.2
• /
• pp.40-46
• /
• 2022

Recently, as the need for data access by integrating information in a distributed cloud environment increases in enterprise-wide enterprises, interoperability for collaboration between existing legacy systems is emphasized. In order to interconnect independent legacy systems, it is necessary to overcome platform heterogeneity and semantic heterogeneity. To solve this problem, middleware was built using EMRA (Extended MetaData Registry Access) based on ISO/IEC 11179. However, the designed middleware cannot guarantee the efficiency of information utilization because it does not have an adjustment function for each node's resource status and work status. Therefore, it is necessary to manage and adjust the legacy system. In this paper, we coordinate the correct data access between the information requesting agent and the information providing agent, and integrate it by designing a cooperative agent responsible for information monitoring and task distribution of each legacy system and resource management of local nodes. to make efficient use of the available information.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2010.04a
• /
• pp.683-686
• /
• 2010

무선 센서 네트워크(Wireless Sensor Network) 환경에서의 작고 상이한 많은 센서들은 물리적 공간에서 서로 통신하며 끊임없이 데이터 스트림을 생성한다. 이런 센서는 측정 데이터와 센서를 표현하는 메타데이터로 구성되어 있다. 메타데이터는 센서의 측정 간격, 위치, 타입, 측정 단위 등의 중요한 정보를 내포하고 있다. 무선 센서는 메타데이터를 관리하기 위한 명확한 표준안의 제시 없이 독자적인 기준을 적용함으로써, 상이한 센서 간에 데이터 수집 및 통합에 어려움이 뒤따른다. 이런 문제점을 해결하기 위하여 본 논문에서는 상이한 센서 간 메타데이터를 효율적으로 통합, 관리하기 위해 OGC(Open Geospatial Consortium)에서 제시한 SensorML(Sensor Model Language)을 기반으로 상이한 메타데이터를 표준화된 형식으로 표현하고, 이를 토대로 메타데이터 관리 시스템을 설계한다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2011.11a
• /
• pp.1195-1198
• /
• 2011

최근 의료 분야에 대한 관심이 높아짐에 따라 유전체 데이터를 수집하고 관리하여 분석하는 기술에 대한 많은 연구가 수행되고 있다. 유전체 데이터는 크게 유전체 데이터를 분석하는 전처리단계와 유전체 데이터로부터 변이된 유전체 데이터를 생성하는 후처리단계를 통해 분석된다. 이러한 분석 과정은 많은 시간이 소요되며, 후처리단계에서 결과 데이터는 분석 알고리즘 및 처리 기법에 따라 상이한 결과 데이터를 생성한다. 또한, 유전체 데이터의 각 파이프라인 별 분석된 데이터의 관리가 필요하다. 본 논문에서는 유전체 데이터의 특성을 고려하여, 유전체 데이터 유래 관리를 위한 메타데이터를 설계한다. 아울러 데이터 유래 메타데이터는 자신의 이전데이터들의 결과데이터에 신속한 접근이 가능해야하며, 자신과 유사한 데이터 유래를 지닌 파이프라인의 상세 정보를 신속하게 검색하는 색인구조가 필요하다. 따라서 이를 고려한 유래 메타데이터 검색 알고리즘을 설계한다.

• Journal of the Korean Society for information Management
• /
• v.31 no.1
• /
• pp.143-161
• /
• 2014

While dCollections of Korea have been initiated by a government for metadata harvesting, institutional repositories of Japan have been managed as instituion's independent tool for not only collectiong, archiving and distributing their intellecture assets, but also realizing open access. This study analyzes IRDB of Japanese statistically for understanding features of institutional repositories and by clustering the repository on the basis of types of contents, the differences have been brightened. According to analysis result, Japanese repository contains diverse types of contents, such as journal articles;scholarly papers, text books and technical reports. etc. and clustered by five distinguished group with different contents type.

• Journal of the Korean BIBLIA Society for library and Information Science
• /
• v.16 no.2
• /
• pp.43-59
• /
• 2005

Traditional paper records have to be preserved in the original form to ensure the authenticity. On the other hand. electronic records have to be continuously changed in content itself or metadata to be preserved in long-term period, so the proof of the legality of each change made so far and the proof of the protection against all the illegal changes are the essential. to ensure these requirements. We need some functions including the authentication of original captured records. the protection of records against the loss or forgery, the authentication of preserved records, and the treatment of authentication-failed records. This paper explains the fragility of authenticity for electronic records, identifies the functions needed, suggests the implementation idea, and describes the overall management polity for electronic records to ensure the authenticity.

• Journal of the Korean Society for information Management
• /
• v.21 no.2
• /
• pp.249-267
• /
• 2004

Although MARC can define the detail cataloguing data, it has complex structures and frameworks to represent bibliographic information. On account of these idiosyncratic features of MARC, XML DTD or RDF/S that supports simple hierarchy of conceptual vocabularies cannot capture MARC formalism effectively. This study implements bibliographic ontology by means of abstracting conceptual relationships between bibliographic vocabularies of MARC. The bibliographic ontology is formalized with OWL that can represent the logical relations between conceptual elements and specify cardinality and property value restrictions. The bibliographic ontology in this study will provide metadata for cataloguing data and resolve compatibility problems between cataloguing systems. And it can also contribute the development of next generation bibliographic information system using semantic Web services.

• Journal of the Korean Society for information Management
• /
• v.24 no.1 s.63
• /
• pp.75-101
• /
• 2007

The current technological revolution pushes forward the innovation in the library information systems. This study proposes functional requirements and an architectural reference model of Semantic Library, recognized as a prototype of next-generation library information systems, that is a seamless convergence of the library information systems and the Internet technologies. Semantic Library can realize semantic interoperability and integration based on ontology and metadata, and also renovate information services for users with openness, sharing, participation and collaboration. Semantic Library will be effectively implemented by means of service-oriented architecture and the logical structure of FRBR. In this study, a reference model of Semantic Library consisting of 6 horizontal layers and 3 vertical elements is presented as a next-generation model of library information systems.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.5 no.2
• /
• pp.69-80
• /
• 2002

GIS is essential to regional development and management in informatization age. But utilization of GIS in Korea remains still elementary area of automated mapping or facility management. In this paper, we suggest executable principles that are able to enhance and improve the efficiency of regional development affairs using GIS DB. In order to accomplish the role of planning support tool, GIS DB have to be plentiful geographic contents. Metadata DB, user-friendly application interface and compatibility of data between the public and the private must be constructed in GIS DB. And geographic information should be shared between the public and the private.

• Journal of Digital Convergence
• /
• v.3 no.2
• /
• pp.143-157
• /
• 2005

Many papers point out that the e-Learning is one of the most important industries, and the effect on other industries can be more powerful than any other business. Therefore, we think about social, cultural, industrial and technological effect of the e-Learning in order to enlarge industry scale as well as educational performances. In many cases of developed countries, various kinds of study have been performed for the e-Learning quality assurance because quality of the e-learning should operate on effective and efficient learning and continuous market development of education industries. The e-Learning quality assurance has import function not only for learning contents reusability like a SCORM and metadata but also for learning system, solution and service operation, so activities for the quality assurance should consider of cultural and tactical approach when it is applied in the e-learning business. In this paper, we present the concept, domain and purpose of the e-Learning quality assurance. Furthermore, this paper proposes the process and methodology in order to make the quality assurance standard model which is consist of 6 phase such as Environment Research, Needs Analysis, Framework, Metrics, Development and Implementation, Evaluation and Feedback through the analysis and comparison of pre-studied worldwide quality control, management and assurance documents.