• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.05a
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• pp.94-95
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• 2000

Chitosan은 식품산업, 의료·의약, 환경, 농업 등 거의 분야에서 광범위하게 응용되고 있는 새로운 천연 기능성 물질이다. 최근에는 항균작용 등 생리활성 기능을 나타내는 chitosan 및 oligochitosan을 활용하여 식품의 유통기간 연장을 위한 연구가 보고되고 있다. Chitosan은 축육소세지 (Park et al., 1999) 및 김치 (Yoo et al., 1998; No et al., 1995)에 대하여 보존효과를 나타내었으나 저염 명란젓 (Kim, 1996)에는 보존 효과가 거의 없다고 보고되고 있다. 본 실험에서는 저염 창란젓의 유통기간 연장 및 기능성 강화를 할 목적으로 chitosan 및 oilgochitosan을 첨가한 창란젓의 숙성기간에 따른 보존성을 연구하였다. (중략)

• Bulletin of Korea Environmental Preservation Association
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• v.7 no.24
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• pp.36-38
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• 1985

• Water for future
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• v.24 no.1
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• pp.119-128
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• 1991

This study was focused on establishing the concepts of the instream flow to prevent the problems for the conceptual ambiguity and the difference in the instream flow estimation methods. The average drought flow is defined as the flow required to guarantee the minimum function of the river such as prevention of drying. The environmental control flow is defined as the flow required to control optimal river environment, the flow required for navigation, prevention of sea water-intrusion, protection of river management facilities, conservation of water Quality, fishing, prevention of river mouth closure, control of groundwater level, protection of animals and plants, and landscape. The average drought flow was obtained by flow duration analysis for the natural flows in the Han River at Indo-Bridge gaging station. When considering the 9 factors related to environment conservation, the conservation of water quality was proved to be most important. The pollutants for the river flows were estimated and the water qualities were forecasted. After comparing the water qualities in the future and water quality standards, there quired optimal dilution flow was estimated. The average drought flow and environmental control flow are all non-consumptive flows. Therefore larger flow between them, i.e., Max. (average drought flow, environmental control flow) can be the instream flow. The river management flow can be added to the flows for water utilization in the downstream. The results from this study are expected to be very helpful in the systematic river management on the other main rivers in Korea.

• Journal of the Speleological Society of Korea
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• v.41 no.42
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• pp.27-40
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• 1995

동굴 생물의 실태를 조사한다는 것은 이 동굴이 그대로 살아 있는가 아니면 이미 폐허화된 동굴인가를 판가름할 수 있는 좋은 근거가 된다. 본 연구는 화암동굴의 동굴 생물들이 서식할 수 있는 생태환경을 조사 분석하고 이들 동굴 생물들의 분포 상태가 어떠한가를 연구 조사한 것이다. 앞으로 이들 동굴 생물의 생태 환경이 그대로 존속되고 있는지 아니면 훼손 오염되어 생태 환경이 보존되고 있지 아니한가를 비교 분석 관찰하는 자료가 될 것이다. 실지 현지 조사한 근거를 토대로 기록한 자료이기 때문에 이 연구 결과가 영원히 보존되어야 하겠다.(중략)

• Journal of the Speleological Society of Korea
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• v.29 no.30
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• pp.43-59
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• 1992

동굴의 환경에 따라 동굴내부의 동물상은 차이가 나타난다. 본 연구는 백용동굴을 중심으로 하여 환경에 따른 동물의 분포상태 및 동굴동물을 구분하였다 본 동굴의 동물상에 대하여는 과거에 남궁 준(1977.6, 1983.7), 남궁 준·백 남극(1979.12). 김 득수(1977.7, 1975.5), 남궁 준ㆍ조 규송(1989.8) 등에 의해 조사된 바 있고, 그 결과는 한국동굴보존협회의 "종합학술조사보고서(1979.12)", 한국자연보존협회 강원도 지부의 "강원도의 희귀자원 조사보고서 제4집(1987)", 강원도 평창군의 "백룡동굴 학술조사보고서(1989.12)"등을 통하여 모두 8강 24과 26속 28종의 동굴동물의 목록과 분포생태 등이 발표된 바 있다.(중략)

• Journal of the KSME
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• v.24 no.3
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• pp.203-213
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• 1984

도시쓰레기 소각처리는 이미 100년전에 유럽지역에서 시작되었고 원래 환경보존 및 공해방지목적에 연유되어 발전되어 왔다. 그후 국제적 에너지자원의 재평가가 중요시됨에 따라 1960년도를 전후하여 소각에서 발생되는 잉여열을 활용하는 장치개발 및 플랜트의 건설이 유행되어 기저부하로서 쓰레기소각로를 이용한 열병합지역난방 시스템이 유럽, 일본 등지에서 상용화되고 있다. 이와 같이 세계적인 추세와 발맞추어 국토가 협소하고 환경오염, 에너지 보존자원이 부족한 우리나라의 입장은 도시쓰레기 처리문제는 해결되어야 할 가장 중요한 당면과제로 대두하고 있다.

• Journal of Korean Society of Archives and Records Management
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• v.20 no.4
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• pp.185-203
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• 2020

The development of the Preservation Metadata: Implementation Strategies (PREMIS) aims to preserve practices beyond the limits of the Open Archival Information System (OAIS) conceptual framework; however, the examples and guidelines on connecting each metadata element to the actual data are unclear, making the design of preservation metadata in real digital archives difficult. Hence, this study investigates actual PREMIS 3.0-based preservation metadata management cases, preserves digital resources in various digital archive environments, and derives implications for the implementation and design of preservation metadata. Based on the analysis, the study proposes preservation metadata elements that can be considered when designing preservation metadata for digital archives according to PREMIS 3.0 application profile guidelines.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.28 no.1
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• pp.41-51
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• 2018

Format preserving encryption(FPE) performs encryption with preserving the size and format of plain-text. Therefore, it is possible to minimize the structural change of the database before and after the encryption. For example, when encrypting data such as credit card number or social security number, it is possible to maintain the existing database structure because FPE outputs the same form of cipher-text as plain-text. Currently, the National Institute of Standards and Technology (NIST) recommends FF1 and FF3 as standards for FPE. Recently, in Korea, FEA, which is a very efficient FPE algorithm, has been adopted as the standard of FPE. In this paper, we analyze FEA and measure the performance of FEA by optimizing it in various environments.

• The Korean Journal of Archival Studies
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• no.67
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• pp.57-97
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• 2021

The purpose of this study is to investigate the transformation of archival appraisal theories in the digital environment. It is clear that the archival appraisal in the degital information technology era, characterized by the mass production of data type records on the information infrastructure will be fundamentally different from before. As the meaning of selecting in appraisal will be reduced, the existing archival appraisal theories need to be reviewed again. We can expect the decentralization of appraising centered on the national archives, considering the social proliferation of digital information technology. Meanwhile, expertise in archival appraisal will also be changed to a new professional acceptance model for digital technology. Digital technology will give us opportunities for a paradigm shift that may be difficult to understand with existing thinking of archival appraisal.

• 공원문화
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• s.76
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• pp.40-45
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• 1999