• The Journal of Engineering Geology
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• v.11 no.3
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• pp.255-267
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• 2001

A comparison study is performed to understand the coupling behavior of the thermal, hydraulic, and mechanical interactions in the vicinity of an underground radwaste repository, assumed to be located at a depth of 500 m, within a granitic rock mass with a 58$^{\circ}$ dipping fault passing through the roof-wall intersection of the repository cavern. The two dimensional universal distinct element code, UDEC is used for the analysis. The model includes a granitic rock meas, a canister with PWR spent fuels surrounded by the compacted bentonite inside a deposition hole, and the mixed bentonite backfilled in the rest of the space within a repository cavern. The coupling behavior of hydromechanical, thermomechanical, and thermohydromechanical interaction has been studied and compared. The effect of the time-dependent decaying heat, from the radioactive materials in PWR spent fuels, on the repository and its surroundings has been studied. A steady state flow algorithm is used for the hydraulic analysis.

• Convergence Security Journal
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• v.11 no.3
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• pp.99-111
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• 2011

The management and deposit of paper document costs are increased gradually. Specially, it is too expensive to safekeeping paper document in the warehouse. Also paper based document system is exposed in several security problems. Therefore, demands of transformation process from paper document into electronic ones are quietly needed. Electronic document repository system is one of the best solutions for solving paper based document system issues. Electronic document repository system can reduce overall costs and provides some advantages in comparison with paper based document system. But, electronic document repository system has no formal methodology for guarantee safeties. Therefore, we suggest a security mechanism for establish electronic document repository system. Suggested security methodology can help for design of more secure electronic document repository system.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.34 no.3
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• pp.109-134
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• 2023

The purpose of this study is to identify the current status of institutional research data repositories in the field of science and technology and to suggest ways to activate them. The study conducted literature research, case analysis, and interviews with repository managers both domestically and internationally. The study suggested strategies with a focus on establishing repository regulations and policies, improving awareness of research data sharing, and enhancing research data quality management. First, in terms of repository regulations and policy establishment, it was considered necessary to promote the status of the National R&D Information Processing Standards, a regulation related to research data, and clarify repository basis regulations. Second, to enhance awareness of research data sharing, the need for comprehensive research data education and the identification of exemplary cases were suggested. Third, in terms of strengthening research data quality management, the need for preparation for interaction between researchers-persons in charge-committees, standardization work, and long-term preservation was suggested.

• Tunnel and Underground Space
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• v.10 no.4
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• pp.553-558
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• 2000

Since 1977, KAERI has conducted the fundamental R&D on the permanent disposal of potential HLW repository in Korea. The first ten year project is divided into three short-term phase studies. The first phase study which shall be finished in March of 2000, has the prime target to develop the disposal concept of HLW. Throughout this study the preliminary and generic disposal repository system has been introduced. The potential repository is proposed to be emplaced into crystalline rocks which is the most common rock types in Korea. The proposed depth of the repository is between 300 to 700 meter. The numerical code, MASCOT-K was developed to asserts the long term safety of the proposed repository concept. Based on this conceptual design preliminary safely assessment was performed. Results show that for the given disposal system the potential radioactive release it well below the regulatory limit.

• Tunnel and Underground Space
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• v.21 no.4
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• pp.264-273
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• 2011

Bentonite buffer is one of the major components of an engineered barrier for an HLW (High-Level Waste) repository. The bentonite buffer is significantly exposed to the decay heat from radioactive wastes, the inflow of groundwater from the surrounding rock of the repository, and the high swelling pressure of densely-compacted bentonite that comes in contact with the groundwater. Therefore, it is essential to understand the THM (Thermal-Hydro-Mechanical) behavior of the bentonite buffer and to acquire the input data of its related constitutive models for the performance and safety assessment of an HLW repository. This paper analyzed the THM properties which have been obtained by conducting laboratory tests with a candidate buffer material for a Korean HLW repository. Moreover the formulation recipe of the reference bentonite buffer was defined on the basis of functional criteria, thus suggesting the THM properties which correspond to the formulation recipe of the reference bentonite buffer.

• The Journal of Engineering Geology
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• v.1 no.1
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• pp.68-84
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• 1991

A numerical analysis using Universal Distinct Element Code program for the nuclear waste disposal cavern has been performed for a typical Korean crystalline rock condition with same geometry of Swedish low and intermediate nuclear waste disposal repository(S.F.R). The stress concentration, displacement and safety factor for the typical single cross section of cavern, 5 caverns and a silo are analyzed.

• Journal of the Korean Society for information Management
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• v.24 no.1 s.63
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• pp.147-164
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• 2007

This study proposes additional service pages for users, researchers, institutions to activate academic institutional repository which captures, disseminates, and manages various academic resources, i.e. theses, dissertations, journal articles, research reports, and so on. The research methods include literature study, case study, and site analysis on the current homepages of Ewha Womans University faculties & institutions. As a result, components and functions of additional service pages such as researchers' pages are suggested. Additional service pages will be made it possible for researchers to submit their products willingly and for academic institutional repositories to activate their services and improve content recruitment in the end.

• Journal of Internet Computing and Services
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• v.5 no.4
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• pp.1-10
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• 2004

Many hospitals tried to exchange their medical information between them. But they could not share efficiently medical information because of their different operating systems and database systems. In this paper, we developed an XML repository(called REPOMI : An XML Repository for Medical Information)based on HL7 that can store XML medical information. REPOMI is implemented by combining EJB components based on RDBMS. By REPOMI, we can manage more easily patient information and share efficiently medical information between hospitals. Therefore, medical informations can be exchanged between hospitals and general hospitals efficiently. As a result, hospitals can offer more efficient diagnosis to patients and it saves time and cost.

• Journal of the Korean Society for information Management
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• v.30 no.1
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• pp.93-109
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• 2013

This study extracted quality control factors for invigorating Institutional Repository operations, and re-extracted key quality control factors with significant influence among them. Furthermore, this study developed an operating model reflecting an improvement scheme of these key quality control factors, and estimated how much effective the operating model was to the user. As a result of inspecting satisfaction for IR operating model and the general system, it has been found that librarians' satisfaction for them is higher than that of the general user. Korea's universities prefer a proxy submission mode by librarians to a self-archiving submission mode by writers. Therefore, based on the operation model developed by this study, it is suggested that Institutional Repository operation can be actively invigorated with librarians of these universities as central players.

• Journal of Korea Multimedia Society
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• v.12 no.2
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• pp.178-190
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• 2009

XML is recommended by W3C(World Wide Web) and widely accepted as a standard markup language for expression and sharing data. Recently, increasing the use and the amount of XML documents, there is required that easy methods for accessing XML documents at anytime and anywhere, therefore, the distributed XML repository systems is developed. For this, distributed XML repository systems is necessary to research catalog management schemes. In this paper, we design distributed XML database model considering CPU costs, I/O costs, concurrency control, two-phase commits a protocol, queuing delay and so on. And we implement a simulator in order to execute performance evaluation centralized catalog method, fully replicated catalog method, and partitioned catalog method using reasonably setting up environments.