• 제목/요약/키워드: Modeling methodology

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Modeling for organizational learning cognitive-maps and agents perspective

  • Kwahk, Kee-Young;Kim, Young-Gul
    • 한국경영과학회:학술대회논문집
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    • 한국경영과학회 1996년도 추계학술대회발표논문집; 고려대학교, 서울; 26 Oct. 1996
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    • pp.241-244
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    • 1996
  • There is a growing tendency to consider organizational learning as a mechanism for improving organizations and the rate at which organizations learn becomes perceived as a source for attaining competitive advantage. The objective of this research is to present a two-phase(learning efficient, and learning-effective) organizational modeling methodology based on the cognitive-maps and agents concept, and to describe how the result of the modeling can be used in the organizational learning context.

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개별기기 및 종합부하 실험에 의한 고조파 성분을 고려한 전압에 대한 부하역률 모델링 (Voltage-dependent Power-Factor Modeling with Harmonic Component by Static Experiments of Individual and Composite Loads)

  • 신창기;김정훈
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2004년도 추계학술대회 논문집 전력기술부문
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    • pp.230-233
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    • 2004
  • This paper is proposed that The voltage-dependant power factor model is established as 5th polynomials with convenience data type. This modeling includes the harmonic components by static experiments of individual and composite load. This paper suggested methodology for modeling bus and regional power factor with consideration of harmonics effect by load composition rates and individual load power factor models.

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GARDIAN: 실시간 내장형 소프트웨어 개발 방법론에서의 룰 기반의 모델링 평가 및 지원도구 (GARDIAN: Rule Based Modeling Validation for Concurrent Object Modeling and Architectural Design mEThod(COMET))

  • 김순태;김진태;박수용
    • 한국정보과학회논문지:소프트웨어및응용
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    • 제34권8호
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    • pp.721-730
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    • 2007
  • UML(Unified Modeling Language)은 대부분의 소프트웨어 개발 방법론에서 목표로 하는 소프트웨어를 분석.설계하기 위하여 널리 사용되며, UML로 작성된 산출물을 기반으로 목표 소프트웨어를 구축한다. 그러나 방법론에서 모델링에 대한 가이드라인이 보통 자연어로 기술되어 있기 때문에 목표 소프트웨어를 위한 모델이 이를 적절히 준수하고 있는가의 검증이 어렵다는 문제점을 가지고 있다. 본 논문에서는 실시간 내장형 시스템(Real-time Embedded System)을 위한 방법론인 COMET방법론을 대상으로 모델링의 가이드라인을 표현하고, 표현된 가이드라인을 기반으로 모델을 평가할 수 있는 룰 기반 COMET 방법론 가이드라인 평가 프레임워크인 GARDIAN을 제안한다. 제안된 프레임워크의 유용성을 검증하기 위하여 비전문가가 UML을 사용하여 분석.설계한 지능형 로봇의 주행 시스템에 프레임워크를 적용하여 보았다.

xPMP - 정책 기반 관리 어플리케이션의 상위 단계 모델링 (xPMP : UML-based High-Level Modeling of Policy-Driven Management Applications)

  • 쩐도안타인;최은미
    • 한국시뮬레이션학회논문지
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    • 제17권4호
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    • pp.209-218
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    • 2008
  • UML(Unified Modeling Language)은 소프트웨어 설계 단계에서 디자인을 구체화하고, 가시화하여 구성하고, 문서화하는데 일반적으로 사용되고 있다. UML 대부분의 설계는 소프트웨어 시스템 구조의 설계에 초점을 맞추고 있다. 최근에는 aspect-oriented 설계와 같이 복잡한 소프트웨어 시스템을 설계하기 위한 부가적인 설계의 요구 사항들이 등장하고 있다. 본 논문에서 는 policy-driven 아키텍처의 동적인 양상을 연구한다. 다양한 어플리케이션 도메인에서 적용할 수 있는 policy-driven 관리 어플리케이션의 상단계에서의 모델링을 제안한다. 어플리케이션들의 많은 활동들을 관리하기 위해서, 같은 상황에서의 다른 자원들에게 정책(policies)과 함께 활동성과 유연성이 지원되어야 확장이 가능하다. 이러한 흐름에서, policy-driven 아키텍처의 동적인 양상을 보여주기 위해 메타 모델링 방법론을 연구하였다. 본 방법론에 기반으로 하여 본 논문에서는 policy-driven 관리 어플리케이션 영역에서의 메타모델링을 설립하였다.

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통계적 분석기법을 이용한 공정 운전 향상의 방법 (Process operation improvement methodology based on statistical data analysis)

  • Hwang, Dae-Hee;Ahn, Tae-Jin;Han, Chonghun
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1997년도 한국자동제어학술회의논문집; 한국전력공사 서울연수원; 17-18 Oct. 1997
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    • pp.1516-1519
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    • 1997
  • With disseminationof Distributed Control Systems(DCS), the huge amounts of process operation data could have been available and led to figure out process behaviors better on the statistical basis. Until now, the statistical modeling technology has been susally applied to process monitoring and fault diagnosis. however, it has been also thought that these process information, extracted from statistical analysis, might serve a great opportunity for process operation improvements and process improvements. This paper proposed a general methodolgy for process operation improvements including data analysis, backing up the result of analysis based on the methodology, and the mapping physical physical phenomena to the Principal Components(PC) which is the most distinguished feature in the methodology form traditional statistical analyses. The application of the proposed methodology to the Balst Furnace(BF) process has been presented for details. The BF process is one of the complicated processes, due to the highly nonlinear and correlated behaviors, and so the analysis for the process based on the mathematical modeling has been very difficult. So the statisitical analysis has come forward as a alternative way for the useful analysis. Using the proposed methodology, we could interpret the complicated process, the BF, better than any other mathematical methods and find the direction for process operation improvement. The direction of process operationimprovement, in the BF case, is to increase the fludization and the permeability, while decreasing the effect of tapping operation. These guide directions, with those physical meanings, could save fuel cost and process operator's pressure for proper actions, the better set point changes, in addition to the assistance with the better knowledge of the process. Open to set point change, the BF has a variety of steady state modes. In usual almost chemical processes are under the same situation with the BF in the point of multimode steady states. The proposed methodology focused on the application to the multimode steady state process such as the BF, consequently can be applied to any chemical processes set point changing whether operator intervened or not.

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이단계 진단전략을 이용한 대형화학공정의 이상진단에 관한 연구 (A study on fault diagnosis of large chemical processes based on two-tier strategy)

  • 오영석;이병우;윤인섭
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1997년도 한국자동제어학술회의논문집; 한국전력공사 서울연수원; 17-18 Oct. 1997
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    • pp.1428-1431
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    • 1997
  • This paper presents an efficient fault diagnosis methodology for lare chemical processes. The methodology is based on a two-tier strategy, When a falt occurs in a process, a top tier identifies the sector (process part or unit) that may contain the fault(s). Afterwards, a bottom tier or lower level evaluates the suspicious sector. The process modeling methodology based on functionality-behavior relations of process units, is proposed and utilized in the top-tier. This methodology models a target process as sequences of functions and variables and their relations. In the bottom tier, each sector has a dedicated diagostic module, which is tailored to the available information or models of the sector. For the sectors selected in the top-tier diagnosis, each diagnostic module is executed to identify the actual faults within the sector. Teh utility of the methodology is illustrated in the diagnosis of the CSTR with heat exchanger.

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A Hypermedia Design Methodology for the Knowledge Capitalization on Data Warehousing System

  • Kim, Jongho;Woojong Suh;Lee, Heeseok
    • 한국지능정보시스템학회:학술대회논문집
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    • 한국지능정보시스템학회 2001년도 The Pacific Aisan Confrence On Intelligent Systems 2001
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    • pp.448-455
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    • 2001
  • Recently, many enterprises have attempted to capitalize knowledge assets on data warehouse (DW). It has been recognized as strategic core process to create corporate competitive advantage and implement enterprise e-biz strategies. However, most approaches to represent knowledge and decision process have limits in considering various knowledge types, their relationships and continuity in knowledge formulation. In addition, they are so inclined to one side such as concept-oriented frameworks or technology-oriented ones. They lack universal and wide-ranging features. This paper presents a comprehensive methodology to accumulate knowledge capital on DW via a properly grained hypermedia model. The methodology consists of three phases: knowledge requirement elicitation, hypermedia modeling, and system implementation. A real-life case for medical DW development is presented to demonstrate the usefulness of the proposed methodology. This methodology is effective when an organization accumulates knowledge assets to put the corporate e-biz or cre-biz strategy into practice.

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Specialized Product-Line Development Methodology for Developing the Embedded System

  • Hong Ki-Sam;Yoon Hee-Byung
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • 제5권3호
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    • pp.268-273
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    • 2005
  • We propose the specialized product-line development methodology for developing the embedded system of an MSDFS (Multi Sensor Data Fusion System : called MSDFS). The product-line methodology provides a simultaneous design between software and hardware, high level reusability. However this is insufficient in requirement analysis stage due to be focused on software architecture, detailed design and code. Thus we apply the business model based on IDEF0 technique to traditional methodology. In this paper, we describe the processes of developing Core-Asset, which are requirement analysis, feature modeling, validation. The proposed model gives the efficient result for eliciting features, and ensures the high level reusability of modules performing on embedded system.

위성 PCB 열해석을 위한 고 전력소산 소자의 모델링 연구 (A Study of High-Power Dissipation Parts Modeling for Spacecraft PCB Thermal Analysis)

  • 이미현;장영근;김동운
    • 한국항공우주학회지
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    • 제34권6호
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    • pp.42-50
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    • 2006
  • 본 논문에서는 위성의 전장보드 열해석을 위한 최적의 열모델링 방법을 제안하였다. 플레이트 모델링 방법을 통한 보드 모델링에 고전력 소산 소자의 외부 및 내부 구조를 직접 모델링하는 방법을 새롭게 제안하였다. 이러한 모델링 방법을 다른 모델링과 비교 분석하여 효율성을 검토하였고 열진공 시험을 통해 검증하였다. 제시한 소자 모델링 방법으로 HAUSAT-2의 발열이 큰 통신보드의 열해석을 수행한 결과, 노드 네트워크 모델링 방법과 플레이트 모델링 방법의 단점을 모두 보완할 수 있었다. 또한, 소자 모델링 방법은 열적인 문제에 따른 소자 수준의 해결방안을 모색 후, 그에 따른 열해석을 수행하여 효과를 예측할 수 있으므로 열제어계 설계에도 효율적이다.