• The Korean Journal of Archival Studies
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• no.42
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• pp.185-211
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• 2014

This paper is a discussion on the archival appraisal system that operates to document big events of the society or major public policies. The writer brought up three suggestions; the first is to develop documentation strategy to select archives at the same time it is created. This means that what matters is the scenes contained in the archives, and therefore they must reflect as wide social context as possible, which the writer considered as being caused by the change of thinking on the value of archives. The second is to develop tools to acquire archives that satisfy such strategy. The third is the sustainability of such documentation strategy and archival acquisition methods. Regarding this point, the writer discussed the problems of current national archival system of Korea.

• Journal of the Korean Society for Library and Information Science
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• v.39 no.4
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• pp.89-104
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• 2005

This article identifies an emerging research paradigm and monitors the changes in digital preservation area using CiteSpace, a Java application which supports visual exploration with knowledge discovery in bibliographic databases. 74 articles on digital preservation field covering the time period from 1990-2005 were extracted from Web of Science. According to the result of analysis, core knowledge domains in digital preservation are technical preservation strategies, information network and preservation system, knowledge management and electronic government.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.17 no.2
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• pp.65-82
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• 2006

The purpose of this study is to present some basic information essential for planning long-term preservation of digital audio files, which have been collected through 'Cultural Archetypes Digitization Project' by the Korea Culture & Content Agency. Needs and limitations of digitization of audio resources for their long-term preservation, digital audio archiving models(OAIS Reference Model and AHDS Model), some technical principles for audio digitization and preservation, preservation metadata and storing media for digital audio files were discussed. Compliance to the requisites listed in Audit Checklist for the Certification of Trusted Digital Repositories of RLG & NARA was suggested. It was also recommended to review the appropriateness of collaborating on digital preservation project with other institutions.

• The Korean Journal of Archival Studies
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• no.63
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• pp.227-268
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• 2020

Microfilm has been used as an important media for enhancing the long term preservation and improving access to records. However, because of technological changes, there have been discussion about whether we should keep using microfilm. This paper presents survey results to review the preservation methods such as microfilming and digitization. The content is organized according to the trends found in the survey from six archives and libraries, including Germany, France, the United Kingdom, and Japan. Moreover, we refer to other papers from the USA and Japan to require further review if we can accept digitized records as the original records, etc. The rest consists of four parts: the use of microfilm as a storage media for preservation, the authenticity of digitized records, the management of records on microfilm, and the preservation of electronic media. Finally, we would like to suggest the way to improve preservation systems and digitize records more widely.

• Food Industry And Nutrition
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• v.1 no.1
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• pp.71-80
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• 1996

김치의 보존성을 높여 가식기간을 연장시키고져 하는 연구는 김치의 숙성원리 측면에서 접근하는 것이 바람직하며, 이러한 접근에 있어서도 저온관리는 가장 기본적인 요소이다. 현재까지 이루어진 연구들은 주로 김치의 미생물 생육을 제어함으로서 보존성을 증진코져하는 시도가 많았다. 김치의 숙성에 영향을 줄 수 있는 요소들은 매우 다양하고 복잡함에도 일부 측면에 한정하여 보존성을 다룸으로서 지금까지 얻어진 효과가 미흡하지 않았나 판단된다. 김치 보존성을 증진시키기 위하여 중점을 두어야 할 몇가지 항목들은 (1)재료의 청정화 (2)소금절임에 대한 과학화 (3)효소저해제 개발 (4)호모형 젖산균의 선택적 저해 (5)완충제 및 중화제의 개발 (6)신맛의 완화 및 억제 물질 개발 (7)철저한 저온관리 등이다. 따라서 김치의 보존성에 영향을 줄 수 있는 다양한 측면에서 그리고 이들을 종합적으로 활용함으로서 보존성문제에 대한 해결이 가능할 것으로 판단된다.

• The Korean Journal of Archival Studies
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• no.14
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• pp.395-399
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• 2006

• Journal of the Computational Structural Engineering Institute of Korea
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• v.12 no.3
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• pp.397-406
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• 1999

A new solution procedure for approximate reanalysis, using the staged hybrid methods with substructuring, is proposed in this study. Displacements are calculated with two step mixed procedures. First step is to introduce the conservative approximation, which is a hybrid form of the linear and reciprocal approximation, as local approximation. In the next step, it is combined with the global approximation by reduced basis approach. Stresses are evaluated from the displacements by matrix transformation. The quality of reanalyzed quantities can be greatly improved through these staged hybrid approximations, specially for large changes in the design. Overall procedures are based on substructuring scheme. Several numerical examples illustrate the validity and effectiveness of the proposed methods.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.11a
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• pp.473-476
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• 2004

본 논문에서는 프라이버시를 침해 하지 않는 데이터 마이닝에 대해 다룬다. 방대한 데이터에서 유용한 정보를 추출하는 데이터 마이닝분야에서 데이터로부터 프라이버시 보존의 중요성이 부각되고 있다. 그래서 프라이버시의 침해를 막기 위한 방법으로 실제 데이터를 사용하지 않고 잡음이 들어간 데이터를 사용한다. 그리고 프라이버시를 침해하지 않기 위해 잡음이 들어간 데이터로부터 데이터의 확률 밀도 함수(PDF)만을 복원한다. 이렇게 복원된 확률 밀도 함수만을 이용하여 데이터 마이닝기술, 예를 들면 분류화에 곧바로 적용함으로써 프라이버시를 보존하는 것이다. 하지만 분류화에 사용되는 데이터의 1차원적인 확률 밀도 함수만 가지고는 군집화에 사용하기가 부적절하다. 따라서 본 논문에서는 군집화를 하기 위해 잡음이 들어간 데이터로부터 결합 확률 밀도 함수(Joint PDF)를 복원하고, 복원된 결합 확률 밀도 함수만 가지고 군집화를 할 수 있는 방법을 다룬다.

• Korean Journal of Heritage: History & Science
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• v.46 no.3
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• pp.150-171
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• 2013

The most important part of conservation treatment of murals is to preserve them against the risk of a damage by injecting fixative into them when the painting loses its cohesion or powderization of pigments occurred due to occurrence of cracks inside the painting layer. However, studies on the stability of fixative used for painting layers of murals are still insufficient. This study manufactured a mural as a specimen and colored it with four kinds of pigments including oyster shell white, cinnabar, malachite and red clay and applied four kinds of fixative, including, Paraloid $B-72^{(R)}$, Caparol-$binder^{(R)}$, glue and Hydoxypropyl $cellulose^{(R)}$. artificially generated environmental changes in temperature, humidity and ultraviolet rays which may occur after the completion of conservation treatment. Then the changes in physical properties were observed in multifaceted ways such as color stability, contact angle, brilliance, adhesive strength and surface. As a result, this study found that ultraviolet rays and hot?humid environment have a large impact on color stability causing changes in brightness and chroma of all painting layers where the fixative were applied, except for oyster shell white and are considered the main factors of decomposition by accelerating the aging process of fixatives applied. In comparison to the synthetic resins that were also tested in this study, the traditional glue showed satisfactory results in terms of color stability and influence preservation and the hydrophile property. As it showed exceptionally outstanding adhesive strength in all painting layers in the aspect of adhesive strength, it is considered to be highly stabile for the fixation treatment of painting layers of mural.

• Clinical and Experimental Reproductive Medicine
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• v.37 no.4
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• pp.267-291
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• 2010

Life can be kept in suspended animation either before fertilization at oocyte stage or after fertilization at different stages of embryonic development for a variety of reasons. It not only has potential applications in fertility preservation and management in human but also has important roles in the preservation and management of animal genetic resources, low-cost international movement of selected genetics, and rapid dissemination of germplasm through assisted reproductive technologies (ART) and genetic engineering. Currently, slow-freezing and vitrification are the two approaches by which oocytes and embryos can be cryopreserved for long-term storage. Both of these methods have their own advantages and disadvantages but allow the cryopreservation of oocytes and embryos with comparable efficiency. Vitrification of oocyte and embryos, although proven successful just 13 years after slow-freezing, is generally considered an emerging technology and appears to slow gain acceptance in both animal and human ART despite having controversial storage and contamination issues. In this manuscript, we discuss the basic techniques of oocyt/embryo cryopreservation and review the current status and recent developments in vitrification.