• Journal of the Korean BIBLIA Society for library and Information Science
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• v.10 no.1
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• pp.117-136
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• 1999

Archive science is similiar to the basic concept of library and information science, especially in terms of accessing, conserving, using archives. Historical and administrative study groups has presented theoretical and logical facts to absorb archive science into their field of study. However, In the library and information science group, the level of research and interest of archive science is relatively poor and even apt to regard archive science with exclusion. This research is an analysis of the tasks carried out in the library and archives. It takes a deep look into the similarities and differences between both fields and also look into the possibility of integrating archive science with library and information science.

• Journal of Elementary Mathematics Education in Korea
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• v.10 no.2
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• pp.151-169
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• 2006

This study is to adjust the Theory in the Mathematics Education, apply it to learning mathematics and to analyse its effectiveness. The results of the study are summarized as follows. First, because learning mathematics is hierarchical, teachers must make and use a task analysis table classified by units. Second, development age and the retention of mathematics concepts are intimately associated with cognitive development theory. Third, learning mathematics through cognitive processes enhances a student's scholastic achievement. Fourth, students interests and self-confidence can be enhanced through the presentation of both examples and non-examples. We cannot understand the higher-order concepts of mathematics by only its definitions. The only way of understanding such concepts is to have experience through suitable examples.

• Journal of Astronomy and Space Sciences
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• v.14 no.1
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• pp.142-149
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• 1997

This paper applied one of the well-known optimal control theory, namely, linear quadratic regulator(LQR), to the station-keeping maneuvers(SKM) for a geostationary satellite. The boundary conditions to transfer the system with a good accuracy at a terminal time were based upon the predicted orbital data which are created due to the Earth's non-uniform mass distribution's effect during 14 days and due to luni-solar effect during 28 days. Through the linearization of the nonlinear system equation with respect to reference orbit and the numerical integration of Riccati equation, the optimal trajectories and the corresponding control law have been obtained by using LQR. From the comparison of ${\Delta}V$ obtained by LQR with the ${\Delta}V$ obtained anatically by geometric method, Station Keeping Maneuvers(SKM) via LQR may provide comparable results to a real system. Furthermore it will demonstrate the possibility in fuel optimization and life extension of geostationary satellite.

• The Korean Journal of Archival Studies
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• no.14
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• pp.3-51
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• 2006

In this paper, I applied known theories of appraisal and re-appraisal to the Japanese Colonial Archives and the Colonial City Planing Archives in Korea. The purpose of this application to some of sample archives was to develop a useful and effective approach to appraise the archives which were not appraised before they were determined to be "permanent" archives by the Japanese colonial officials. The colonial archives have lost their context and "chain of custody." A large portion of their volume also disappeared. Only thirty thousands volumes survived. The appraisal theories and related issues applied to and tested on these archives are; "original natures" of archives defined by Sir. Hillary Jenkinson, Schellenburg's information value appraisal theory, the re-appraisal theory based on economy of preservation and prospect for use of the archives, function-based appraisal theory and documentation theory, the special nature of the archives as unique, old and rare colonial archives, the intrinsic value of the archives, especially the city planing maps and drawings, and finally, the determination of the city planing archives as permanent archives according to the contemporary and modern disposal authority. The colonial archives tested were not naturally self-proven authentic and trustworthy records as many other archives are. They lost their chain of custody and they do not guarantee the authenticity and sincerity of the producers. They need to be examined and reviewed critically before they are used as historical evidence or any material which documented the contemporary society. Rapport's re-appraisal theory simply does not fit into these rare historical archives. The colonial archives have intrinsic values. Though these archives represent some aspects of the colonial society, they can not document the colonial society since they are just survived remains or a little part of the whole archives created. The functions and the structure of the Government General of Korea(朝鮮總督府) were not fully studied yet and hardly can be used to determine the archival values of the archives created in some parts of the colonial apparatus. The actual appraisal methods proved to be effective in the case of colonial archives was Schellenburg's information value appraisal theory. The contextual and content information of the colonial archives were analysed and reconstructed. The appraisal works also resulted in full descriptions of the colonial archives which were never described before in terms of archival principles.

• Proceedings of the Korean Society for Information Management Conference
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• 2004.08a
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• pp.69-76
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• 2004

디지털 아카이빙 정책은 디지털 정보를 보존하여 후대에 이용하도록 하기 위한 필수 요건이다. 디지털 아카이빙 정책은 정보 생성과 보존 활동을 위한 프레임워크뿐만 아니라, 지금 만들어진 안전장치정보에서 즉시 사용을 위한 실제적인 가이드라인을 규정하는 것이다. 본 연구에서는 다양한 유형의 디지털 아카이브즈에 있어서, 그 아카이브즈의 환경과 목표에 따라 규정되어지는 디지털 아카이빙정책의 이론적 배경을 분석하였고, 특히 호주 국립도서관의 디지털 아카이빙 정책과 프랑스 통계자료를 위한 보존 정책을 중심으로 사례 분석하였다.

• Proceedings of the KACD Conference
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• 2003.05a
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• pp.290-290
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• 2003

지난 20세기 동안, 치아 우식에 대한 치료는 G.V. Black이 제안한 '예방 확대' 개념에 따른 와동형성 원칙에 따라 외과적 치칠 삭제의 형태로 수행되어져 왔다. 즉, 치아 우식 병소에 발견되면 치과의사들은 망설임 없이 핸드 피스를 들고 우식 부위 치질을 삭제하며, 수복재료에 따라 적합한 형태로 건전한 치질을 삭제하여 수복 와동을 형성하였다. 그러나 치아 우식에 대한 많은 연구 결과, 원인균과 산 생산 및 탈회와 재석회화 등에 대한 정보가 알려졌고, 접착 수복이 비약적 발전을 하여 임상 적용이 일반화되면서, 지난 10여년 이래 치아 우식에 대한 치료 개념이 점차 최소 치질 삭제와 건전 치질 보존으로 전환되어 왔고 이러한 개념을 통칭하여 Minimal Intervention Dentistry라 하고 있다. 21세기에는 치아 우식에 대한 치료가 minimal intervention dentistry의 개념 하에 점차 폭넓게 임상에 적용될 것으로 예상되며, 다음과 같은 원칙들이 제시되고 있다.(중략)

• Journal of Korean Society of Archives and Records Management
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• v.3 no.2
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• pp.115-141
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• 2003

This paper suggests efficient policies of the long term preservation and digital archiving of Korean electronic journals based on the OAIS Reference Model. For this purpose, a questionnaire survey and interviews have been conducted to the institutions which are providing access to Korean electronic journals. Information packages and functional workflows which suggested in the OAIS Reference Model are applied to improve the long term preservation.

• Journal of Korean Society of Archives and Records Management
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• v.7 no.2
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• pp.95-111
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• 2007

The goal of this paper is to review the process of formation of the Early Soviet Archival System with a focus on the incarnation of the Tsar Russian System and Theories. Most of the western researchers take the uniqueness of the Soviet Archival System for granted and regard it as a Soviet Invention. However in this paper, researcher tries to find the archaic form of the Soviet system in the Kalachov's archival theories in the late 19th century. In the main body of this paper, researcher tries to reveal the whole feature of the Kalachov's theories, then, compares them with the Soviet System including 'Glavarkhiv.'

• Journal of Korean Society of Archives and Records Management
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• v.1 no.1
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• pp.153-175
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• 2001

This research is aimed at proposing the policies for enhancing information services at the GARS. To this end, a survey was carried out over the user group, the staff group, and the external expert group. And then the 3-Partner Approach Model was proposed that accommodates the archivist-centered partnership with users and external experts. Based on this model. the three-aspect policies to upgrade information services were proposed.

• Korean Journal of Cognitive Science
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• v.11 no.3_4
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• pp.33-43
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• 2000

The distinction between short-term store (STS) and long-term store (LTS) has been made in the perspective of information processing. Memory system theorists have argued that memory could be conceived as multiple memory systems beyond the concept of a single LTS. Popular memory system models are Schacter & Tulving (994)'s multiple memory systems and Squire (987)'s the taxonomy of long-term memory. Those m models agree that amnesic patients have intact STS but impaired LTS and have preserved implicit memory. However. there is a debate about the nature of the long-term memory impairment. One model considers amnesic deficit as a selective episodic memory impairment. whereas the other sees the deficits as both episodic and semantic memory impairment. At present, it remains unclear that episodic memory should be distinguished from semantic memory in terms of retrieval operation. The distinction between declarative memory and nondeclarative memory would be the alternative way to reflect explicit memory and implicit memory. The research focused on the function of frontal lobe might give clues to the debate about the nature of LTS.