• Proceedings of the Korean Operations and Management Science Society Conference
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• 1989.10a
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• pp.140-150
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• 1989

본 논문에서는 PC분산시스템의 구조와 운영방식에 대해서 논하고 자원 고유방식과 부하 공유방식중 어느것을 택하느냐에 따라서 PC분산시스템의 두가지 모델을 제시하였다. 또한 PC분산시스템을 위한 네트워크 운영체제의 구조, 기능 및 내재된 문제점을 알아보고 그것을 해결하기 위한 분산운영체제의 구조와 기능에 대해서 고찰하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10a
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• pp.49-51
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• 2001

과학기술 논문의 수준을 평가하고, 국내 학술지 및 기관간의 연구능력 비교 분석의 척도로 사용하기 위한 KSCI(Korean Science Citation Index : 한국과학기술인용색인) 구축 및 활성화를 위하여 XML을 기반으로 하는 모델을 설계하였다. KSCI 데이터베이스는 인용만 논문과 인용된 논문들 사이의 관계를 정의하고 논문을 작성한 저자들에 대한 인력DB의 구축과 연계를 통하여 구성되어진다. 이러한 과정에서 발생되어지는 표준화 과정과 데이터베이스간의 연계를 효율적으로 주진하고 효율적인 KSCI 데이터베이스를 구축하기 위한 XML 표준을 설계하였다. 첫째, 데이터베이스틀의 연계를 위한 모델을 설계, 둘째, 인용된 논문과 인용한 논문에서의 서지정보. 저널정보, 참고문헌정보에 대한 XML DTD를 정의 셋째, 저자와 공저자들에 대한 인력DB 구축을 위한 XML DTD를 정의하였다. 본 논문은 KSCI데이터베이스 구축을 통해서 데이터에 대한 상호 교환, 공동 활용을 보다 효율적으로 수행하고 안정적인 체제 구축을 고려하여 모델을 설계하였다.

• The Safety technology
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• no.17
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• pp.34-41
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• 1999

건설공사의 원청사인 대기업과 협력업체간 안전관리체제를 수직.수동적 관계에서 수평적인 관계로 이동하기 위한 대기업과 협력업체 공동재해 예방활동 모델에 대한 연구논문을 소개하고자 한다.

• Convergence Security Journal
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• v.8 no.2
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• pp.111-118
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• 2008

Computer forensics have been used for verify a crime when industry secret information or cyber crime occurred. However, these methods are simple analysis which cannot find the problem of deleted files. Therefore these cannot be a trusty evidence in a law court. We studied with focus on connectivity principle because it has never tried yet. In this paper, we developed optimizing detection model through systemized analysis between user-delete method and operating system-delete method. Detection model has 3 cases; Firstly, case of deleted by a user, secondly, case of deleted by application. Thirdly case of deleted by operating system. Detection model guarantees optimized performance because it is used in actual field.

• Proceedings of the Korea Contents Association Conference
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• 2003.11a
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• pp.260-264
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• 2003

본 논문에서는 인터넷에서의 트래픽 엔지니어링 체제를 구축하기 위하여 트래픽 엔지니어링을 수행하기 위한 기능 모델을 제시하였다. 제시한 기능 모델은 트래픽 관리, 용량 관리, 그리고 네트워크 계획으로 구성된다. 트래픽 관리는 다양한 조건하에서 네트워크 성능을 최대화하는 것을 목적으로 하며, 용량 관리는 최소의 비용으로 네트워크 요구에 대한 성능 목표치를 만족시키기 위하여 네트워크가 설계되고 제공됨을 목적으로 한다. 또한 네트워크 계획은 예측된 트래픽 증가에 앞서 노드와 전송 용량이 계획되고 배치됨을 보장한다.

• Journal of Korean Library and Information Science Society
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• v.34 no.3
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• pp.93-110
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• 2003

This paper takes a new open access digital library system to enhancing the process of scholarly communication such as journal publishing, article dissemination, etc. It examines also the causes of crisis in scholarly communication, new alternative models, related activities and case studies. The open access digital library is a practical, cost-effective digital collections capturing and preserving the intellectual output of academic institution including university, research institute.

• Journal of the Korean Society of Groundwater Environment
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• v.2 no.2
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• pp.49-57
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• 1995

Areas of Chungyang in Chungcheongnamdo, Cheju island and Georgia in U.S.A. were selected to calculate their groundwater ages and dispersion parameters using tritium. Piston flow model, Completely mixing model and Dispersion binomial model which calculate men residence times, and Dispersion normal model and Dispersion model(C$\_$FF) which calculate mean residence times and dispersion parameters simultaneously were applied. Since the input data, tritium concentrations of rainwaters, lack in part, tritium input function was prepared using the correlation of tritium concentrations of rainwaters of Pohang, Korea and Ottawa, Canada. Similar results of PFM and DBM reflect the intrinsical similarity of two models, assumption of low dispersion. The ages of sites of showing relatively higher tritium concentrations than other sites in the sam, region were not calculated by CMM. Since the calculations of DNM and DM(C$\_$FF/) provide the combination of wide ranges of parameters and groundwater ages, the ranges of dispersion parameters were narrowed down under the assumption that ages calculated by PFM and DBM are correct. Since large variation of tritium concentrations of outflows in a same region may reflect the different characteristics of each groundwater flow regime, using only one specific model on a whole region is not recommended.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.16 no.2
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• pp.55-70
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• 2006

In this paper, we propose a new access control security architecture for supporting flexibility in Secure Operating Systems. By adding virtual access control system layer to the proposed security architecture, various access control models such as MAC, DAC, and RBAC can be applied to Secure Operating Systems easily. The proposed security architecture is designed to overcome the problem of Linux system's base access control system. A policy manager can compose various security models flexibly and apply them to Operating Systems dynamically. Also, the proposed architecture is composed of 3 modules such as access control enforcement, access control decision, and security control. And access control models are abstracted to hierarchy structure by virtual access control system. And, we present the notation of policy conflict and its resolution method by applying various access control model.

• Journal of Aerospace System Engineering
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• v.10 no.4
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• pp.41-49
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• 2016

This research intends to make a model of space development in Korea as a sectoral innovation system. The main contents include a character analysis of the elements of three low levels of the space development innovation system, including governance (the main agent and cooperation relationship of which the center is a research institute supported by government), resources (financial resources and human resources), and the diffusion of research results. It is important to grasp the factors that bring about technological innovation of industrial sectors to produce technological innovation policy. Technology innovation policy should thus be formulated for specific, individual sectors, and not all sectors.

• Journal of the Korean Institute of Gas
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• v.3 no.3 s.8
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• pp.17-22
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• 1999

This study established management system integrated Safety$\cdot$Health, Management System(SHMS) and Environment Management System(ISO 14000) which satisfy all the systems through analyzing the PSM, SMS, BS 8800 and ISRS. Also, this study presented the guideline model which can make regular document forms in the integrated Safety, Health and Environment Management System. Furthermore, integrating management system developed in this study can reduce the duplication and inefficiency of materials and human resources in chemical industries