• The Journal of Information Technology
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• v.4 no.4
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• pp.89-100
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• 2001

XML (extensible Markup Language) is selected and published as a representative standard of electronic documents by W3C (World Wide Web Consortium). The structured information can be created and also transferred in XML documents. By utilizing XML, you can express the meaningful information unit as a structure comparing existed file typed information. With structured information, you can also manage retrieve, and reposit documents. According to the above facts, in this paper, it is the purpose to design and implement XML documents repository system to reposit and retrieve using structured information of XML documents. As a model it was designed to be stored by element unit which is the basic unit of documents and was also designed to retrieve the stored XML information by structured unit. It was, especially, designed to manage and reposit the structure of various documents effectively through creating schema as to DTD(Document Type Definition) and instance.

• Proceedings of the Korea Contents Association Conference
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• 2004.11a
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• pp.240-243
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• 2004

Recently, in the global and digital business environment, we are in need of a single window through which we can exchange market information, make a contract, exchange foreign currency, clear customs and settle accounts. The "e-Trade platform" provides all the stakeholders in international trading circles with these series of trading processes by use of any available information technologies in an effective and seamless manner. The platform collectively includes e-trade infrastructures(e-trade documents repository, e-trade messaging system, e-trade standard documents repository) enabling small and medium sized companies as well as large enterprises to interface with government organizations and global trading institutions. The IT levels of the trading companies are significantly important in terms of benefiting the quality services from the e-trade platform.

• Journal of Korea Multimedia Society
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• v.8 no.1
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• pp.128-136
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• 2005

In this paper, we designed and implemented the general-purpose document repository manager for the ebXML-based e-business framework that support the rapid translation of various types of documents and provide the flexibility corresponding to the framework changes. Also, we automated the manually-processed e-business document translation process by designing the adaptor module for the interoperability of legacy systems. In the regards, our designed general purpose document manager makes it possible to integrate the existing e-commerce systems that are operated on the heterogeneous frameworks, and can be used on global e-business solution.

• Journal of KIISE:Computing Practices and Letters
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• v.9 no.3
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• pp.332-340
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• 2003

XML is an emerging internet standard for data representation and exchange on the web. Recently, many researches on storing XML documents are in progress. Since XML documents have an implicit semantic schema, it is difficult to store XML data into a DBMS or File System. This paper introduces XDOM, object repositories for the DOM object, which stores an object for persistency support. As XDOM does not require the burdensome design of a fixed schema unlike the legacy DBMS, can store schema-less XML documents. And it can help XML applications to access the DOM object transparently from the object repositories below memory. XDOM introduced in this paper is implemented in pure Java and evaluated using experiments.

• Nuclear Engineering and Technology
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• v.51 no.6
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• pp.1561-1574
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• 2019

A standard form of six stylized human intrusion scenarios for a near-surface disposal facility (e.g. the planned Korean repository, Gyeongju Phase II) is proposed through re-categorization of totally thirty-one past cases reported in public literature. A reference assessment framework for inadvertent human intrusion is newly developed using GENII Version 2 conforming to the ICRP Publication 60 and thereafter. Calculated dose from the assessment framework is verified by comparing with hand calculation results for simplified model equations independently derived. Results from GENII Version 2 and 1.485 show inevitable differences, which is mainly attributed to the difference in the external dose assessment model. If intake dose coefficients in GENII Version 1.485 are modified, the difference can be reduced but still exist to an extent. Through deterministic and probabilistic sensitivity analysis, most affecting four parameters are derived and uncertainties of the parameters are quantified. It is expected that the reference assessment framework together with representative stylized scenarios can be used to do a human intrusion impact assessment for a specific repository using site-specific information. Especially, the past practice of human intrusion impact assessment using GENII Version 1.485 with or without modification may be replaced with the new assessment framework developed in this study.

• Nuclear Engineering and Technology
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• v.54 no.11
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• pp.4005-4012
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• 2022

As high-level radioactive waste (HLW) generated from nuclear power plants is harmful to the human body, it must be safely disposed of by an engineered barrier system consisting of disposal canisters and buffer and backfill materials. A gap exists between the canister and buffer material in a HLW repository and between the buffer material and natural rock-this gap may reduce the water-blocking ability and heat transfer efficiency of the engineered barrier materials. Herein, the basic characteristics and thermal properties of granular bentonite, a candidate gap-filling material, were investigated, and their effects on the temperature change of the buffer material were analyzed numerically. Heat transfer by air conduction and convection in the gap were considered simultaneously. Moreover, by applying the Korean reference disposal system, changes in the properties of the buffer material were derived, and the basic design of the engineered barrier system was presented according to the gap filling material (GFM). The findings showed that a GFM with high initial thermal conductivity must be filled in the space between the buffer material and rock. Moreover, the target dry density of the buffer material varied according to the initial wet density, specific gravity, and water content values of the GFM.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10b
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• pp.277-279
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• 1998

비디오와 같은 매체가 결합된 대용량의 멀티미디어 데이터를 보다 효율적으로 저장 및 검색하기 위한 연구가 다양한 분야에 걸쳐 진행중이다. 본 논문에서는 NoD 서비스용 내용-기반 비디오 정보검색을 위해, 미국의 Wisconsin 대학에서 개발한 SHORE(Scalable Heterogeneous Object Repository) 객체-재향 저장 시스템을 이용하여, 멀티미디어 객체 자체의 비디오 스트림 데이터와 그에 따르는 부가적인 색인 정보를 효율적으로 저장하고 관리하기 위한 하부 저장 구조를 설계한다.

• Proceedings of the Korea Multimedia Society Conference
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• 2001.11a
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• pp.467-471
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• 2001

최근 들어 소프트웨어의 대형화, 통합화가 요구되어지면서 소프트웨어 개발방법의 변화가 대두되고 있으며, 그 해결책의 하나로 컴포넌트 소프트웨어가 제시되고 있다. 경험이 많은 개발자에 의해 개발된 컴포넌트는 소프트웨어 재사용이 뛰어나고, 이미 낳은 곳에서 사용중이므로 안정성 및 신뢰성이 인정된다. 이러한 컴포넌트의 개발자와 소비자를 연결하기 위해 웹 환경에서 컴포넌트의 명세 및 컴포넌트 자체를 쉽게 등록 및 검색이 가능하도록 설계하였다. 하나의 컴포넌트의 명세에 따르는 각기 다른 종류의 멀티미디어 컴포넌트 등 다양한 종류의 컴포넌트를 등록, 검색할 수 있으며 다양한 분류법을 지원하는 컴포넌트 저장소이다.

• Proceedings of the Korea Multimedia Society Conference
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• 2002.05d
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• pp.655-660
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• 2002

기업은 eBusiness를 위하여 다양한 기업 솔루션을 도입하고 있다. 그러나 이것은 오히려 업무가 복잡해지는 어려움을 겪게 만들게 되었다. 이로 인해 주목받고 있는 것이 단일화된 게이트웨이를 통해 정보를 제공받을 수 있는 EP(Enterprise Portal)이다. EP의 도입을 통해 기업은 경쟁력 향상과 정보의 지식화, 비용과 시간의 절감 및 직원과 고객 모두에 대한 생산성 향상을 꿰할 수 있다. 본 논문은 UML 모델링을 통한 포털의 설계로부터 플랫폼에 독립적으로 XML 문서를 저장할 수 있는 XML 저장관리시스템을 기반으로 한 B2B XML Portal을 설계하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.11a
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• pp.453-456
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• 2005

금형 설계의 지능화 및 자동화는 많은 연구가 있어왔지만 다양한 형태의 설계 자동화는 아직 큰 성과를 거두지 못하고 있는 실정이다. 이에 온톨로지를 이용하여 금형 설계 자동화를 이루는려고 하고, 이에 필요한 온톨로지를 저장, 관리하는 온톨로지 저장소를 설계하고자 한다.