• Journal of Korea Spatial Information System Society
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• v.2 no.1 s.3
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• pp.83-90
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• 2000

According to the development of Internet system recently, we focused in GIS data distribution and applications via internet rather than GIS data construction. Therefore in this paper, we present the necessity of security policy on GTS data. So we analyze the actual condition of GIS data through expert poll. We classify all of data used in GIS with the three security level : high level, middle level, low level. Finally we propose the proper security method on GIS data transfer and on GIS database access in accordance with progree of PKI project.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2000.06a
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• pp.855-861
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• 2000

선박의 설계초기 단계에서 주요 진동특성인 주선체 및 상부구조의 고유 진동수와 고유 진동형을 구하게 위해서는 현재까지 주로 경험식에 의존하게 된다. 이들 경험식들은 만들어진 시기가 최소 20년 이상 씩 됨에 따라 이중선체 유조선, IMO의 visibility 규정의 강화에 따른 상부조 높이의 증가, 콘테이너 선의 초 대형화 경향과 같이 최근의 선박 변화가 제대로 반영되어 있지 못하기 때문에 최근 선박의 진동특성을 추정하는 데는 많은 오차를 유발할 수 있다. 따라서 본 연구에서는 실적선들의 진동해석 및 계측 결과들을 정리하여 데이터베이스화하고 이들 자료들을 이용하여 회귀분석 방법에 의해 통계해석을 수행하므로써 설계 초기단계에서 선박의 진동 특성을 정도 높게 추정하는 방법을 개발하고 주기관 및 프로펠러 날개 수 선정에도 정확도를 기할 수 있도록 하였다. 또한 본 방법을 바탕으로 windows환경의 전산프로그램으로 개발하여 사용자의 편의성을 크게 도모하였다. 본 방법의 타당성과 정도를 확인하기 위해 일련의 수치계산을 수행하여 계측치와의 부합성이 매우 양호함을 보였다.

• Proceedings of the Korea Concrete Institute Conference
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• 2003.05a
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• pp.805-810
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• 2003

It is the real circumstance in the country that not only the data and special books but also people who have an expert knowledge are short of the field of the study about plastic wastes, so that to build the Database carrying out gathering info of that is the present question obviously. The business on recycling plastic, for some reason or other, is one of the best ways as called bright prospect industry to prevent environmental pollution and obtain economical outcome by using limited resources. Plastic wastes with construction industry especially using Polymer may have a good effect on the environment and human beings and have a fine view to produce functional and Eco-friendly concrete as well. In this study, Chemical resistance and Water Absorption test in Polymer concrete using bentonite as a shrinkage control agent was made an experiment by comparing with influence on concrete strength and used to offer some valuable data about Polymer concrete.

• Steel and Composite Structures
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• v.7 no.6
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• pp.421-440
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• 2007

An optimal design method in cooperated with nonlinear inelastic analysis is presented. The proposed nonlinear inelastic method overcomes the difficulties due to incompatibility between the elastic global analysis and the limit state member design in the conventional LRFD method. The genetic algorithm used is a procedure based on Darwinian notions of survival of the fittest, where selection, crossover, and mutation operators are used to look for high performance ones among sections in the database. They are satisfied with the constraint functions and give the lightest weight to the structure. The objective function taken is the total weight of the steel structure and the constraint functions are load-carrying capacity, serviceability, and ductility requirement. Case studies of a planar portal frame, a space two-story frame, and a three-dimensional steel arch bridge are presented.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.10a
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• pp.272-276
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• 2003

The appearance of the computer composition system(MIDI) expects that non-musicians can make musics easily, but, in fact, non-musicians still compose hard. This thesis shows that a computer makes lord progress through a database, which in-putted all practicable cord progress. In other words, non-musicians just makes some melodies over the settled cord progress, so they can make a music more easely.

• Bioinformatics and Biosystems
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• v.2 no.1
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• pp.12-16
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• 2007

DNA repair means a collection of processes that a cell identifies and corrects damage to genome sequence. The DNA repair processes are important because a genome would not be able to maintain its essential cellular functions without the processes. In this research, we make some gene regulatory networks of DNA repair in S. cerevisiae to know how each gene interacts with others. Two approaches are adapted to make the networks; Bayesian Network and ARACNE. After construction of gene regulatory networks based on the two approaches, the two networks are compared to each other to predict which genes have important roles in the DNA repair processes by finding conserved interactions and looking for hubs. In addition, each interaction between genes in the networks is validated with interaction information in S. cerevisiae genome database to support the meaning of predicted interactions in the networks.

• Proceedings of the KIEE Conference
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• 2002.11b
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• pp.209-211
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• 2002

This paper computes the regional, seasonal and hourly representative model of load power factor considering load characteristics of all 154/22.9 kV substations. An accurately computed representative model of load power factor is studied to present a precision improvement of power system analysis and the security of the system. The method to compute representative model of load utilizes the method of applicable moving average based on the method of flow average. The EMS data are used as the source to assess the load power factor.

• Proceedings of the Korean Information Science Society Conference
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• 2008.06c
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• pp.55-59
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• 2008

분산되어 있는 여러 운영계 시스템에서 대용량의 교통자료를 가져와 교통정보 이력자료를 분석할 수 있는 단일 통합 교통 데이터베이스를 구축한다. 품질 평가, 오류 판단, 결측보정과 평활화 등의 자료처리 과정을 거친 교통자료는 자료의 신뢰도를 판단하고 활용도를 높일 수 있게 해주며 이용자에게 고속도로 통행료 수납자료, 고속도로 전자통행료 수납자료, 차량검지장치자료, 도로전광표지자료, 돌발상황자료, 기상자료, 차량번호인식장치자료 등에 대한 검색 및 자료 처리 기능을 제공한다.

• Journal of Information Management
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• v.23 no.3
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• pp.1-18
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• 1992

Researchers in materials fields should pay more attention to how to put the information and knowledge obtained in the past to practical use in their daily activities. The construction of computer aided knowledge system and research related use of information in material science fields are described.

• Journal of Information Management
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• v.26 no.3
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• pp.32-53
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• 1995

A system of networked digital libraries will be a primary component of information infra-structure. The general strategy for digital libraries by the American university libraries is summarized as building of information infrastructure, content database construction, and project-based design. This paper describes the present feature and status of digital libray programs being implemented by the libraries of Michigan University, Carnegie Mellon University and Virginia PolyTech & State University.