• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.7
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• pp.857-865
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• 2020

This paper presents a method for code generation of UML sequence diagrams based on message patterns. In the sequence diagrams, it is shown that messages are some types of forms typically. This paper classifies according to type as three patterns, and construct meta-information for code generation analysing structural infomation for each patterns. The meta-message of structural information (MetaMessage) is stored in the MetaMessage datastore and the meta-method information from the MetaMessage is stored in the MetaMethod datastore. And then, the structural information of MetaClass and MetaObject is constructed in each datastore too. For each pattern, this paper presents a method for code generation based on the meta information of message patterns and the syntax of target progamming language. Also, branching and looping that has been seldom handled integratedly in the previous works are handled as same as the basic patterns by classifying the branching pattern and the looping pattern for code generation integratedly.

• Journal of the Korean Society for Library and Information Science
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• v.42 no.1
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• pp.45-61
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• 2008

Meta-analysis refers to the analysis of analysis. It is the statistical analysis of a large collection of analysis results from individual studies for the purpose of summarizing, integrating and interpreting the inconsistent findings. However, no meta-analysis study has been conducted in Library and Information Science in Korea. This Study introduced the characteristics, basic principles, analysis procesure, and major models of meta-analysis, reviewed meta-analysis studies in Library and Information Science, and discussed major problems in conducting meta-analysis in Library and Information Science especially in Korea.

• Journal of Korean Library and Information Science Society
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• v.32 no.2
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• pp.307-322
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• 2001

The purpose of this study is to investigate how and which meta tags are used, which meta tags are used frequently, and what relationships there are between retrieval of WWW documents and meta tags. For the study, 1,000 WWW documents were selected and examined from OCLC NetFirst. The total of 92 meta tags was discovered and "description" and "keywords"meta tags were analyzed intensively. In addition, analysis of WWW documents showed that there are no significant relationships in meta tag usages between documents retrieved at the beginning and documents retrieved at the end. Comparative study between general internet search engines and commercial DBs such as NetFirst is suggested as a further study.

• IE interfaces
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• v.19 no.3
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• pp.225-235
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• 2006

In this paper, we propose an intelligent e-commerce meta-search engine which integrates distributed e-commerce sites and provides a unified search to the sites. The meta-search engine performs the following functions: (1) the user is able to create a category-based user query, (2) by using the WordNet, the query is semantically refined for increasing search accuracy, and (3) the meta-search engine recommends an e-commerce site which has the closest product information to the user’s search intention by matching the user query with the product catalogs in the e-commerce sites linked to the meta-search engine. An experiment shows that the performance of our model is better than that of general keyword-based search.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2005.11a
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• pp.346-355
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• 2005

In this paper, we propose a meta-search engine which provides distributed product information through a unified access to multiple e-commerce. The meta-search engine proposed in this paper performs the following functions: (I) The user is able to create a category-based user query, (2) by using the WordNet, the query is semantical refined fined for increasing search accuracy, and (3) the meta-search engine recommends an e-commerce site which has the closest product information to the user's search intention, by matching the user query with the product catalogs in the e-commerce sites linked to the meta-search engine. An experiment shows that the performance of our model is better than that of general keyword-based search.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10a
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• pp.661-663
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• 2004

본 논문에서는 SAN 기반 공유 파일 시스템인 SANfs의 fault-tolerance를 보장받기 위해 fault-tolerant server인 shadow server를 구현하였다 SANfs(1)는 SAN에서 Network-attached storage에 접근하는 여러 클라이언트가 서로의 데이터를 공유할 수 있도록 도와주는 파일시스템이다. SANfs에서 파일 관리를 위해 meta server를 두고 있으며, 이 서버에서 네트워크를 통해 접근하는 털러 클라이언트의 request를 관리한다. SAMfs에서는 meta server를 통해 중앙 집중식으로 파일시스템을 관리하고 있기에 meta server가 fault가 나게 되면 전체 시스템의 동작이 멈추게 되는 single point-of-failure의 문제가 생기게 된다. 본 논문에서는 meta server가 fault가 났을 경우에도 지속적으로 서비스를 할 수 있도록 shadow server를 두었으며. 이 서버가 meta server의 이상 시 그 기능을 대행하도록 하였다. 본 논문의 shadow server는 평상시에 meta server와 파일시스템의 metadata의 동기를 맞추고 있으며, 이 정보를 가지고 meta server로 그 기능을 전환하였을 때 서비스를 해 주도록 하고 있다. 상대 서버의 이상 유무의 판단은 heartbeat를 통해 이루어지고 있으며, meta server로의 failover는 heartbeat의 주기에 영향을 받음을 실험을 통해 알게 되었다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.9 no.3
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• pp.53-62
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• 1999

The rapid growth of Internet supports a base that share useful information. It needs for mass of information that requires a fast processing capability. It needs a meta0information system. Meta-information system supports fast search service but occurs a problem in case of information security. In this paper we propose a information security attribute that are user access control for meta-information system to solve the problem.

• Korean Journal of Computational Design and Engineering
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• v.11 no.4
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• pp.273-288
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• 2006

Information integration of heterogeneous digital parts libraries or electronic pars catalogs is one of issues in B2B procurements. We need to provide an integrated view for multiple information sources. Utilization of ontologies as the metadata descriptions of the information sources can provide an integrated view. However, in order to integrate independently developed ontologies, the mismatches among them should be resolved. In this paper, we propose an ontology of meta-concepts, i.e. meta-ontology. The meta-concepts play the role of vocabulary to describe the parts library ontologies and provide well-established ontological semantics that helps the ontology modelers to consistently identify parts library concepts and systematically structure them. Consequently, the meta-ontology reduces the differences in the way the parts knowledge is interpreted and ensures the mismatches are confined to manageable mis matches, so that a software program can merge automatically. Modeling ontologies of mold and die parts libraries for B2B e-commerce is taken as an example to show how to use the meta-ontology. We also discuss how a parts library mediation system can automatically merge the well-structured parts library ontologies.

• Journal of Information Technology and Architecture
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• v.10 no.3
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• pp.315-321
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• 2013

The ROK military has established the MND-AF (Ministry of National Defense- Architecture Framework) and is applying it when developing architecture for Enterprise (MND), Segment (component) and Solution (weapons and force support system). The AMM (Architecture Meta model) of the MND-AF supports the establishment of interoperability by systematizing the architecture information structure defined by the Architecture artifact, describing the relationship between data and also by liking reference models and Information technology standard, common components, and MND-Meta data. which are interoperability standards. However, the MND-AMM has insufficient linkage with the standards, which places constraints on applying interoperability standards when developing Solution architecture. This study suggests a logical data model (OV-7c) from the MND-Meta-data-based Architecture meta model that will enhance the application of MND meta data managed by the MND interoperability standard when developing Solution architecture.

• Proceedings of the IEEK Conference
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• 2002.06a
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• pp.109-112
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• 2002

SNMP is generally used protocol for network management. SNMP need MIB for exchanging management information But, method for sharing MIB is not automatic. General MIB sharing architecture is done by network management operator by manually. In this paper we describe exchanging MIB automatically using meta-MIB. We will formalize SMI as MIB structure. This meta MIB represent information about MIB of NE Agent. Meta MIB has Information of object in the MIB, Structure and index information fur columnar object, meaning of subtype at INTEGER syntax. Also, trap related information is represented too. In this paper, MIB information is represented as instance of meta MIB. This architecture will provide a method for automatic MIB exchanging