• Journal of the Korean Society for Precision Engineering
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• v.7 no.3
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• pp.66-74
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• 1990

This paper presents a knowledge-based computer aided process planning system that automatically selects machine tools, machining operations and cutting tools and determines sequences of the machining operations for prismatic parts in die manufacturing. In the proposed system, parts are described by manufacturing features and grouped into part families based on the functions. Each part is repressented by a part frame which consists of basic data and manufacturing features. Knowledge for manufacturing is acquired from the domain expert and represented by frames. A decision model for selection of machine tools, machining operations and cutting tools and for determining sequences of the machining operations are developed by employing the Mealy machine in finite automata with output. The decision procedure and the order of priority which inputs manufacturing features into the Mealy machine are represented by rule for each part family. Backward chaining is used for the proposed system. The proposed system is implemented by using TURBO-PROLOG on the IBM PC/AT. A case study for the slide core is presented to show the function of the proposed system.

• Korean Journal of Hydrosciences
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• v.4
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• pp.65-79
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• 1993

Selection of the best operating rule among a set of alternatives for a multipurpose reservoir system operation requires to evaluate many minor criteria in addition to the major objectives assessed to the system. These problems are sufficiently complex and difficult that they are beyond heuristic decision rules and experiences in case several noncommensurable multiple criteria are included in the evaluation. With the assistance of multicriterion decision analysis techniques, it is possible to select the best one among various alternatives by systematically comparing and ranking the alternatives with respect to the criteria of choice. Evaluation criteria for multipurpose reservoir system operating rules were identified and defined, and the multicriterion decision analysis techniques were applied to evaluate the four existing operating rules of the Chungju multipurpose project according to the identified nine multiple criteria. The application results show that the methodology is very efficient to select the best operation alternative among a finite number of operating rules with many evaluation criteria for a large-scale reservoir system operation.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.22 no.6
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• pp.1311-1322
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• 1997

Performance management of ATM network is urgently required because a different quality of service should be guaranteed on each connection. A lot of performance measurement data increase the burden on agent systems and on managment stations. In this paper, an effective OAM-based performance monitoring and faulty node identification technique is proposed. A proposed VP Selection Algorithm reduces management-related traffic and when the indication of hard or soft failure state is detected, failed node is identified by Fault Identification Rule.

• IE interfaces
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• v.17 no.2
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• pp.169-179
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• 2004

In supply chain management, supplier capacity is very important to meet the customer demand quickly. This paper studies a supplier evaluation structure and then suggests a methodology using fuzzy theory for selecting an effective supplier. Several quantitative and qualitative evaluation factors should be analyzed in the evaluation structure. The qualitative factors includes not only product and service qualities but financial condition. The methodology deals with both the quantitative and qualitative factors together through fuzzy inference. A case study is also presented to show how to choose the best one among potential suppliers.

• Journal of the Korean Vacuum Society
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• v.3 no.2
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• pp.207-211
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• 1994

전체 압력을 변화시키면서 다이아몬드박막을 n형 Si(100) 기판 위에 마이크로 웨이브 화학기상 증착법으로 증착하였다. 높은 압력으로 (225 torr)증착된 박막은 낮은 압력(60 torr)의 박막보다 다이아몬 드 순수도가 향상되었으며 표면도 매끈한 {100}형상이 우세하였다. 다이아몬드 박막의 성장양식을 알아 보기 위하여 낮은 압력(600torr)과 높은 압력(225 torr)에서 증착된 박막의 미세구조를 투과전자현미경으 로 각각 분석하였다. 전체압력이 낮은 경우 박막과 기판의계면에는 a-SiC의 중간층이 형성되어 있는 것 을 확인하였으며 전체압력이 높은 경우의 박막은 evolutionary selection rule에 따라 성장하는 것으로 추론되었다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.9 no.7
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• pp.2683-2702
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• 2015

A Content-based Image Retrieval (CBIR) system employs visual features rather than manual annotation of images. The selection of optimal features used in classification of images plays a key role in its performance. Category proliferation problem has a huge impact on performance of systems using Fuzzy Artmap (FAM) classifier. The proposed CBIR system uses a modified version of FAM called Non-Proliferation Fuzzy Artmap (NPFAM). This is developed by introducing significant changes in the learning process and the modified algorithm is evaluated by extensive experiments. Results have proved that NPFAM classifier generates a more compact rule set and performs better than FAM classifier. Accordingly, the CBIR system with NPFAM classifier yields good retrieval.

• Proceedings of the Korea Multimedia Society Conference
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• 2002.11b
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• pp.203-206
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• 2002

최근 웹을 기반으로 한 문서의 전자화가 이루어지면서 기존의 전통적인 펜기반 교정 시스템 또한 온라인 상의 전자 문서 환경에 맞게 변화하고 있다. 이러한 펜기반 입력 기법을 사용하는 교정 시스템에서는 일반 문서와 달리 웹 문서의 구조정보를 고려한 편집이 지원되어야 하며 또한 교정 부호와 텍스트 간의 정확한 영역 인식이 이루어져야 한다. 본 연구에서는 온라인 교정 시스템 모델링을 통하여 온라인 환경에 적합한 교정 부호를 정의하고, 교정 대상 텍스트 영역을 편집 가능한 단위로 구분하여 효율적인 편집 연산이 이루어 질 수 있도록 하였다. 또한 웹 기반의 구조문서(HTML/XML) 편집 환경을 고려하여 편집으로 인한 문서의 구조 정보 변경을 지원하기 위하여 텍스트를 비구조 및 구조정보 텍스트로 분류하여 정의하였다. 본 연구에서는 이러한 모델에 기반하여 교정 부호의 특성에 따른 가변적인 편집 텍스트 영역 인식 규칙 모델을 정의하여 교정 부호와 편집 텍스트 영역간의 모호성을 최소화 하고, 편집으로 인한 문서의 구조 정보 변경을 지원하는 시스템을 구현하였다. 결과적으로 온라인 웹 문서 환경에서 펜기반의 모호한 교정 부호의 입력을 인지적인 관점에서 해석하여 보다 정확한 교정 작업 수행을 지원하도록 하였다.

• Journal of the Korean Operations Research and Management Science Society
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• v.18 no.3
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• pp.79-100
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• 1993

This paper proposes an idea of reverse modeling that analyzes LP models and then converts them into an object-oriented model repository. The process of reverse modeling consists of (1) identifying and analyzing source models by meta processor, (2) model decomposition and generalization to scan the models and divide them into model components, and (3) deriving model selection rules from the components by rule generator. Through the process, we can extract reusable model components and build a model base with model selectioon rules. Examples with models created by SML and MODLER modeling languages are given to illustrate the methods. The model base management capabilities provided by reverse modeling can increase the reusabioity of current modeling tools.

• Proceedings of the Korea Contents Association Conference
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• 2006.05a
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• pp.185-188
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• 2006

The mobile game is growing with the style which is creating a high added value from the Republic of Korea game industry. The mobile game of the style which is various selection is joyful is giving to the users. The mobile puzzle game is the style which gets world-wide huge popularity. The objective of this paper is the huge popularity mobile puzzle game it leads and it analyzes it presents a game element and a rule and the importance of game design and also the problem of the Republic of Korea mobile game industry solves.

• Journal of the Korea Society for Simulation
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• v.4 no.1
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• pp.75-86
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• 1995

There has been a great deal of interest in the area of group technology recently. They suggest that group technology's formation of cells of machines which are dedicated to production of families of parts will bring many of the advantages of cellular layout of job shops. In this context, Yoon [2] designed and suggested 3 types of the layout structure for a small firm, by introducing the cellular layout into the traditional flow line of an existing factory. Also he found that P5C, i.e. process layout /5 cells layout, outperformed the rest types. However, he performed the experiments in the standpoint of the existing factory operation and did not consider other operating methods including changing the dispatching and sequencing rules. Therefore, in this paper, we compared the performance of 3 different layout by the simulation technique using the real data from the existing factory, considering a newly suggested dispatching and machine selection rule.