• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 추계학술대회
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• pp.547-548
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• 2021

본 논문에서는 SR DEVS 모델에서 자식 객체에 대한 부모 객체의 내부 상속을 고려한다. 내부 상속 함수는 상속 부모 객체가 지정될 경우 함수의 상속 처리를 수행한다. 내부 상속의 경우 부모 객체의 자산 특성에 따라 순수 상속과 부분 분열 상속으로 구분된다. 또한 상속에서 여러 자산에 대한 상속 선택이 발생할 경우 함수 처리를 요구한다. 내부 상속에 대해 선택 함수의 결정 방식을 통하여 자식 객체는 부모 객체로부터 자산을 넘겨받는다.

• Management Science and Financial Engineering
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• 제1권1호
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• pp.67-90
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• 1995

In planning an assembly system, choosing the proper assembly sequence is one of the most important decisions because it significantly affects the costs associated with the assembly process. This paper deals with the selection of assembly sequences in flexible assembly systems. The selection criterion is the minimization of makespan to complete all assembly products. This problem is formulated as a "modified FAS scheduling problem" (MFASSP) and its scheduling procedure is described. The experimental results show that the procedure is very efficient for both quality of solution and computation time.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 1996년도 Proceedings International Workshop on New Video Media Technology
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• pp.134-139
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• 1996

This paper discusses the user interface for content selection with a video-on-demand system. We suggest two modes for the selection process: active and passive. This paper analyses various video intensive user interfaces using logs of user operation to understand how users behave in each mode.

• Journal of information and communication convergence engineering
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• 제3권4호
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• pp.209-212
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• 2005

This study proposes hybrid case-based reasoning and genetic algorithms model for customer classification. In this study, vertical and horizontal dimensions of the research data are reduced through integrated feature and instance selection process using genetic algorithms. We applied the proposed model to customer classification model which utilizes customers' demographic characteristics as inputs to predict their buying behavior for the specific product. Experimental results show that the proposed model may improve the classification accuracy and outperform various optimization models of typical CBR system.

• 한국조경학회지
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• 제16권3호
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• pp.7-20
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• 1989

^x This paper aims to grasp the basical things of the architectural meaning of Bu - Seok Temple through the background of site selection and the analysis of arrangement change of it. For this purpose, I try to examine the process of folk- belief adhesion of Buddism and Feng - Shui as the choice factor of site when the temple was established, the spatial characters of the changing stage in arrangement. These characters of Bu - seok temple have significance for the basic study on the site selection and the spatial analysis of a mountainous district Temple in Shilla.

• Journal of the Korean Statistical Society
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• 제11권1호
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• pp.12-24
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• 1982

Selection procedures are proposed for selecting the 'best' industrial process with the smallest fraction defective. For normally distributed industrial processes, this is equivalent to selecting in terms of coefficients of variation. For the case of known vairances, selection procedures by Bechhofer (1954), and Bechhofer and Turnball (1978) are appropriate. We treat this problem for the case of uknown variances with or without reference to a standard. The large sample solutions of design constants are tabulated and the performance of these approximate solutions are investigated.

• Nuclear Engineering and Technology
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• 제42권4호
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• pp.377-381
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• 2010

In 2007 the Nuclear Energy Agency's Committee on the Safety of Nuclear Installations published Best Practice Guidelines for the use of CFD in Nuclear Reactor Safety. This paper provides an overview of the document' contents and highlights a few of its recommendations. The document covers the full extent of a CFD analysis from initial problem definition and selection of an appropriate tool for the analysis, through final documentation of results. It provides advice on selection of appropriate simulation software, mesh construction, and selection of physical models. In addition it contains extensive discussion of the verification and validation process that should accompany any high-quality CFD analysis.

• 한국가스학회지
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• 제13권1호
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• pp.52-60
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• 2009

본 논문에서는 Risk-based design개념을 반영하여 체계적인 설계방향을 제시하고 현존하는 법에 더욱 안전한 방향으로 법안이나 규격을 수정할 수 있는 방안을 제시하려고 한다. 안전설계 부분의 초기설계 집중도 및 수준을 향상시키기 위하여 설계 초기단계에서부터 체계화된 안전설계 요소의 정보를 제공할 수 있는 새로운 Advanced Safety Analysis Table(ASAT)을 개발하였다. 또한 ASAT를 토대로 공정 트러블에 따른 안전장치를 선택하는 방법에 대한 가이드라인을 개발하였다. 개발된 ASAT, 공정 트러블에 따른 안전장치를 선택방법의 사례 연구로 NCC(Naphtha Cracking Center) 공정의 PGC(Process Gas Compressor)에 대한 ASAT를 구축하고 공정 트러블에 따른 안전장치를 선택한 결과를 분석하였다.

• 산업경영시스템학회지
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• 제40권1호
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• pp.79-86
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• 2017

This research focused on deciding optimal manufacturing WIP (Work-In-Process) limit for a small production system. Reducing WIP leads to stable capacity, better manufacturing flow and decrease inventory. WIP is the one of the important issue, since it can affect manufacturing area, like productivity and line efficiency and bottlenecks in manufacturing process. Several approaches implemented in this research. First, two strategies applied to decide WIP limit. One is roulette wheel selection and the other one is elite strategy. Second, for each strategy, JIT (Just In Time), CONWIP (Constant WIP), Gated Max WIP System and CWIPL (Critical WIP Loops) system applied to find a best material flow mechanism. Therefore, pull control system is preferred to control production line efficiently. In the production line, the WIP limit has been decided based on mathematical models or expert's decision. However, due to the complexity of the process or increase of the variables, it is difficult to obtain optimal WIP limit. To obtain an optimal WIP limit, GA applied in each material control system. When evaluating the performance of the result, fitness function is used by reflecting WIP parameter. Elite strategy showed better performance than roulette wheel selection when evaluating fitness value. Elite strategy reach to the optimal WIP limit faster than roulette wheel selection and generation time is short. For this reason, this study proposes a fast and reliable method for determining the WIP level by applying genetic algorithm to pull system based production process. This research showed that this method could be applied to a more complex production system.

• 한국생산제조학회지
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• 제19권1호
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• pp.94-100
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• 2010

Nowadays, several nontraditional machining(NTM) processes are widely used to machine a complex and accurate shape part of hard materials, such as titanium, ceramics, high strength temperature resistant and refractory materials which are difficult to machine and having high strength, hardness, toughness. Machining of these complex shapes in such materials by traditional machining processes are very difficult. The NTM processes is important in the areas of micro- and nano scale machining, where high accuracy and superior surface characteristics are required, which can only be achieved using these NTM processes. So, for effective selection of different NTM processes, careful decision making for a given NTM application is often necessary. An appropriate NTM process for a given material and shape condition is very difficult for the novice engineers. In this paper, an expert system based on an analytic network process(ANP) is suggested for a best selection of NTM process in a NTM application considering an prior interdependency effect among various factors.