• 가정과삶의질연구
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• 제21권1호
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• pp.49-60
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• 2003

The purpose of this study is to analyze expenditure on children's private, after-school education, perceptional need for private education, and budget planning pattern for the expenditure of education applying survey data, and to investigate current situation to Identify solving planning for digital age. taking on-line educational service system and internet financial planning for children's educational expenditure into account. Under the purposes, this study especially focused on the condition of on-line educational service system and the merits as well as problems of the system, the need for household financial planning for children's education, and the condition or nature of internet financial planning system, in terms of providing market information and of suggesting policy implications.

• 한국철도학회논문집
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• 제17권2호
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• pp.140-147
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• 2014

노선 계획이란 열차종별 수요를 만족하는 최적의 열차 운행 횟수를 결정하는 단계를 말한다. 이러한 노선계획의 주요 입력자료는 통행배정 모형으로부터 산출된 열차종별 구간 통행량이다. 그러나 대부분의 통행배정 모형 또한 노선계획을 통해 구한 열차 운행 횟수 혹은 시격을 입력요소로 요구하므로, 수요예측(통행배정)-노선계획의 단계적 접근은 두 계획간의 상호 모순을 초래하여 부정확한 열차종별 수요 및 노선계획을 도출할 수 있다. 본 연구는 이 두 가지 문제를 통합적으로 고려할 수 있는 최적화 모형과 이에 대한 선형 근사해법을 제시하고, 전체 한국 철도 네트워크에 적용한 실험결과를 제시한다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 하계학술대회 논문집 A
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• pp.73-75
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• 2004

This paper presents the ability and the application of software packages for distribution planning which are DISPLAN(Distribution Planning System) and DLPLAN(Distribution Line Planning System) developed in KEPCO. After calculating size and position of maximum load by administration section for distribution, it forecasts the demand of distribution load considering growth location, increment, new load plan, etc of load by annual. Also it calculates distribution loss, voltage drop using modeled distribution line by you, and support for establishment and enlargement plan of substation and distribution line, decision of most optimal path. And it presents the abstract of used algorithm to develop this system.

• 한국군사과학기술학회지
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• 제2권2호
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• pp.83-91
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• 1999

Dynamic characteristic of manufacturing stage is understood and the utilization of each machine is maximized by developing on-line dynamic CAPP system to consider the overloads in the aircraft part manufacturing line. In this paper, a scheme of production planning and scheduling system was proposed through inspection about some predeveloped CAPP system. Developed production planning and scheduling system included process planning module. After precise inspection of some FMS line schema at domestic heavy industry, optimized FMS line was applied to aircraft part manufacturing and repairing factory. By virtue of considering overloads of factory and machine through on-line dynamic CAPP system, the utilization of resources is maximized and manufacturing lead time is minimized.

• 한국방재학회 논문집
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• 제8권3호
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• pp.105-115
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• 2008

도시화로 인한 유출량의 증가 및 도달시간의 단축은 도시재해의 한 원인이 되고 있다. 이를 막기 위하여 도시 배수유역내에 저류지를 설치하여 첨두도달시간을 지연시키고 방류량은 하수관거의 통수능 이하로 조절하는 방안을 활용하고 있다. 저류지를 설계 운영함에 있어서 사용되는 수문모형은 일반적으로 계획모형, 설계모형 및 운영모형으로 분류되고 있다. 본 연구에서는 재해영향평가서 22개소의 기 설계된 저류지를 분석대상으로 하여 여러 가지 저류지 계획모형의 적합성을 검토하였다. 저류지 계획모형으로는 삼각형, 사다리꼴 설계수문곡선과 경험적 공식을 이용한 11가지의 모형을 적용하였다. 저류지 계획모형의 분석에서 on-line 저류지의 경우는 사다리꼴 형태 설계수문곡선을 채택하고 있는 이종태 등 모형(1991)의 결과가 대상 저류지의 실저류량과 가장 유사함을 보였고, off-line 저류지의 경우는 삼각형 형태 설계수문곡선을 채택하고 있는 Abt and Grigg 모형(1978)의 결과가 비교적 양호한 결과를 보이는 것으로 나타났다.

• 품질경영학회지
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• 제42권3호
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• pp.279-290
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• 2014

Purpose: The purpose of this study is to propose adoption of QFD and Stage-gate in order to analyze the quality of korea defense system. Methods: Drawing change data of initial production phase in korea defense system were anlayzed and a practical method was proposed. Results: The results of this study are as follows; Off line Quality Control should be introduced in development phase. Specially, in case of defense system, the best method is QFD(Quality Function Deployment) and Stage-gate process. At first, QFD 1 step defines product planning from VOC(Voice Of Customer), QFD 2 step specifies part planning from product planning, QFD 3 step defines process planning from part planning, QFD 4 step defines production planning from previous process planning. Secondly, Stage-gate process is adopted. This study is proposed 5 stage-gate in case of korea defense development. Gate 1 is located after SFR(System Function Review), Gate 2 is located after PDR(Preliminary Design Review), Gate 3 is located after CDR(Critical Design Review), Gate 4 is located after TRR(Test Readiness Review) and Gate 5 is located before specification documentation submission. Conclusion: Off line QC(Quality Control) in development phase is necessary prior to on line QC(Quality Control) in p roduction phase. For the purpose of off line quality control, QFD(Quality Function Deployment) and Stage-gate process can be adopted.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 하계학술대회 논문집 G
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• pp.2342-2344
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• 1998

In this paper, the path planner is presented for a robot to achieve an efficient path forward the given goal position in two dimensional environment which is involved with partially unknown obstacles. The path planner consists of three major components: off-line path planning, on-line path planning, and modification of planned path. Off-line path planning is based on known environment and creates the shortest path. On-line path planning is for finding unknown obstacles. The modification can be accomplished, by genetic algorithm, to be smooth path for preventing slippage and excessive centrifugal force.

• 한국철도학회논문집
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• 제15권2호
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• pp.185-192
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• 2012

노선 계획이란 수요를 만족시키면서 열차 운행 비용(operation cost)을 최소화하는 시종착별 열차 운행횟수를 결정하는 과정을 말한다. 그러나 화물 수송의 경우 화물 취급역에서 발생하는 화물의 연결 혹은 해방 작업은 상당한 시간을 필요로 하여, 잦은 중간 화물역에서의 연결 해방 작업은 수송 서비스의 품질을 저하시킬 수 있으므로, 여객 열차의 노선 계획과 달리, 화물 열차 노선 계획에서는 각 열차의 도중 입환역을 어떻게 설정할 것인가가 매우 중요한 문제이다. 본 연구는 열차의 운행 경로, 운행 횟수뿐만 아니라 열차별 도중 입환역를 포함하는 노선계획을 작성하기 위한 최적화 모형을 제시하고, 이 모형에 대한 열생성 기반 해법 및 실험결과를 제시할 것이다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 심포지엄 논문집 정보 및 제어부문
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• pp.333-334
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• 2007

We propose a path planning method to decrease a inspection lead time of line scan camera in SMT(surface mount technology) in-line system. The inspection window area of printed circuit board should be minimized to consider the FOV(field of view) of line scan camera so that line scan inspector is going to find a optimal solution of path planning. We propose one of the hierarchical clustrering algorithm for a given board. Comparative simulation results are presented to verify the usefulness of proposed method.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 학술회의 논문집 정보 및 제어부문 A
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• pp.11-14
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• 2003

In this paper, we use Fuzzy Logic and Potential field method for optimal path planning of an autonomous mobile robot and apply to navigation for real-time mobile robot in 2D dynamic environment. For safe navigation of the robot, we use both Global and Local path planning. Global path planning is computed off-line using sell-decomposition and Dijkstra algorithm and Local path planning is computed on-line with sensor information using potential field method and Fuzzy Logic. We can get gravitation between two feature points and repulsive force between obstacle and robot through potential field. It is described as a summation of the result of repulsive force between obstacle and robot which is considered as an input through Fuzzy Logic and gravitation to a feature point. With this force, the robot fan get to desired target point safely and fast avoiding obstacles. We Implemented the proposed algorithm with Pioneer-DXE robot in this paper.