• 시스템엔지니어링학술지
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• 제10권2호
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• pp.33-42
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• 2014

There have been growing demand of Light Rail Transit(LRT) which have a lot of advantages such as construction costs lower than the recent subway, reduction of operational costs, availability of line planning, operation of railway non-beneficiary region, flexible operations of trains, unmanned operation and also have eco-friendly advantages, it is now becoming urban railway systems when environmental issues have been highlighted all over the world. Therefore, RAMS(Reliability, Availability, Maintainability, Safety) Process and activities for effective implementation of light rail transit projects have become a very important element, and also the utilization of computerized tools to perform these more systematically and productively is sought after these days. In this paper, we have presented a plan that can support the RAMS activities by utilizing the function of the computerized SE(Systems Engineering) tool(CORE$^{(R)}$). Through support of the computerized SE tool, it would be possible more clear and efficient railway project execution.

• 대한기계학회논문집 C: 기술과 교육
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• 제1권2호
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• pp.199-204
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• 2013

국가 연구 개발 사업을 통해 수행된 도시형 자기 부상 열차 실용화 사업은 중저속 자기부상열차시스템 개발기술을 확보하고 시범노선 구축 및 시험운행을 통해 상용화를 목적으로 자기부상열차로서 국내에서는 최초의 상용화이며 완전무인운전시스템 구현을 목표하고 있다. 본 연구는 사업에 참여하는 기업, 연구소들의 시스템엔지니어링 활동의 핵심이라고 할 수 있는 도시형자기부상열차 시스템요구사항을 개발하고, 요구사항을 기반으로 도출된 추적성 기법을 제안하였다. 본 논문에서는 사업 전주기에 걸쳐 관리할 수 있는 체계를 정립하고, 카테고라이징 및 DB화를 통하여, 사용자 중심의 엔지니어링 도구를 개발함으로써, 도시형 자기부상열차 시스템의 개발 및 구축을 효과적으로 지원할 수 있도록 하였다.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2014년도 추계학술발표대회
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• pp.650-653
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• 2014

기존의 소프트웨어 개발은 SW품질을 중요시 하지만, 고품질에 대한 문제가 아직도 존재한다. 또한 기존 레가시 시스템는 개발자나 설계의 부재 경우가 많고, 코드의 내부 복잡도와 모듈간의 결합도가 높을 가능성이 높다. 따라서 코드 가시화를 통한 복잡도 개선은 고품질화과 더불어 코드 모듈의 재사용과 유지보수등과 직접적 관련성이 있다. 본 논문은 기존 SW가시화용 자동 Tool Chain 기반에서 여러 리펙토링 방법 절차 적용으로 복잡도 개선을 제안 한다. 이런 코드 가시화가 결과적으로 타깃의 결합도를 줄일 수 있다. 기존의 레가시 코드에 자동 Tool chain적용은 고품질 적용이 충분히 예상된다.

• 한국안전학회지
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• 제15권2호
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• pp.31-35
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• 2000

After constructing master model utilizing CAD data originated by sketch, product NC data for polyurethane foam using digitized master model data. And model cutting is performed utilizing specially developed polyurethane foam cutting tool in machining center. In this study, it is discussed to construct concept of tool offset, method of tool offset and feature tolerance, etc., that is impossible for cutting of the polyurethane foam by CNC machine.

• 산업경영시스템학회지
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• 제21권47호
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• pp.193-209
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• 1998

The objective of this paper is to present a methodology for design of the FMS by using a new modeling tool which is called SE&TPN(Safe Extended & Timed Petri Net). A FMS, which consists of various machine groups, may produce machine parts in different physical dimensions and lot size. The approach involves the SE&TPN modeling by Petri-nets. The proposed algorithm can handle determining of firing count vector by incidence matrix and adjustment of conflict using the marking of SE&TPN. The SE&TPN is defined as nets that can have at most one token in one place and can have elements such as permissive arcs and inhibitor arcs in addition to elements. The SE&TPN with permissive arcs and inhibitor arcs are intuitively direct approach to increase the modeling power of the SE&TPN. Finally, this paper is to develop a modulation to optimize the system problems of FMS using SE&TPN which describes exactly features of Petri Nets.

• Bioinformatics and Biosystems
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• 제2권1호
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• pp.33-36
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• 2007

Scientific literature is the most reliable and comprehensive source of knowledge for scientific and biomedical information. Citation information in the literature is also reliable source for linking between literatures. We proposed CiNet, a graphic user interface based tool that extracts the trend of the research using citation information. We can navigate related literatures and extract keywords from the linked literature using this tool. These extracted keywords will be helpful to researchers who want to survey the information.

• 임상간호연구
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• 제15권2호
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• pp.5-21
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• 2009

Purpose: This study was aimed to develop a tool for evaluating nurses' performance by using Balanced Score Card (BSC) in hospital units. Methods: Preliminary survey was done in 10 hospitals to investigate evaluation criteria for nurses' performance. For the main study, each of 14 nursing managers evaluated 2 nursing units (total of 28 nursing units) to verify the sensitivity of the tool criteria. The evaluation result drawn from the preliminary BSC tool was analyzed to verify the sensitivity and validity of the tool. Results: As a result, nurses' performance evaluation tool consisted of 4 categories, 8 objectives, and 14 criteria was developed. Conclusion: The BSC tool for nurses' performance evaluation provides meaningful data in evaluating nursing performance in hospital units.

• 한국기계연구소 소보
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• 통권11호
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• pp.5-12
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• 1984

• 한국멀티미디어학회논문지
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• 제18권12호
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• pp.1528-1537
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• 2015

In this research, we show that constructing a specific job-processing-sequences like a OPL paragraph in OPM (we call it int a new terminology 'program', which just means plan) is essential step in programming, just like a blueprint for a wood furniture or a house. As a result of our research on how to produce a specific job-processing-sequences without OPM, we found that outlining tool is the most easy-to-use tool for the required job. We show that the MS-word outlining function can be used easily as a good programming supporting tool with Visual Studio C/C++.

• International Journal of CAD/CAM
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• 제8권1호
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• pp.45-53
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• 2009

As the point sampling technology evolves rapidly, there has been increasing need in generating tool path from dense point set without creating intermediate models such as triangular meshes or surfaces. In this paper, we present a new tool path generation method from point set using Euclidean distance fields based on Algebraic Point Set Surfaces (APSS). Once an Euclidean distance field from the target shape is obtained, it is fairly easy to generate tool paths. In order to compute the distance from a point in the 3D space to the point set, we locally fit an algebraic sphere using moving least square method (MLS) for accurate and simple calculation. This process is repeated until it converges. The main advantages of our approach are : (1) tool paths are computed directly from point set without making triangular mesh or surfaces and their offsets, and (2) we do not have to worry about no local interference at concave region compared to the other methods using triangular mesh or surface model. Experimental results show that our approach can generate accurate enough tool paths from a point set in a robust manner and efficiently.