• 영재교육연구
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• 제22권2호
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• pp.291-315
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• 2012

본 연구에서는 달의 위상 변화에 대한 과학적 모형 구성 수업에서 나타나는 영재 학생들의 모형 생성 및 발달 과정의 특징과 학생과 교사의 활동이 이 과정에 미치는 영향에 대해 알아보고자 하였다. 이를 위해 과학영재 학생을 대상으로 과학적 모형 구성 수업을 실시하였다. 수업 전체 및 모둠별 활동을 영상 촬영, 음성 녹음하였으며 선택한 모둠에 대한 면담을 실시하고 학생들의 활동지를 분석 자료로 활용하여 모둠별 개인별 학생들의 모형 생성 및 발달과정을 재구성하였으며, 학생들의 활동 양상과 교사의 역할이 여기에 미치는 영향을 도출하였다. 모둠 내에서의 토론이 모둠의 모형 생성 및 발달과정에 기여하며, 표적 모형과 초기모형의 유사성 정도에 따라 개인 모형의 발달 과정이 달라졌다. 모둠활동에 적극적으로 참여하는 학생이 많을수록 초기 모형은 다양해지고 최종 모형도 더욱 정교하게 나타났으며, 교사는 모형의 생성 및 발달과정에 큰 영향을 미치는 것으로 나타났다.

• 한국전산구조공학회논문집
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• 제21권6호
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• pp.527-533
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• 2008

본 논문에서는 통합제품개발 관점에서 Computer-Aided Engineering(CAE) 활동을 지원하는 제품자료모델(Product Data Model)을 제안한다. 제안된 제품자료모델은 제품개발 프로세스를 관리하는 제품생애주기관리(Product Lifecycle Management: PLM) 시스템에 현재 독립되어 진행되고 있는 CAE 활동을 통합될 수 있도록 한다. 제안된 제품자료모델에 포함된 제품관점(Product View)은 설계와 제품구조를 공유하여 다양한 대안을 해석하고, 그 결과를 손쉽게 설계로 전달할 수 있는 독립적 CAE 활동을 보장한다. 제안된 모델을 검증하기 위하여 제품개발 프로세스와 통합된 CAE 활동을 지원하는 PLM 시제품을 개발하였다.

• 전기학회논문지
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• 제60권4호
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• pp.830-837
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• 2011

A turbine control system which has been operated for years in a nuclear power plant was retrofitted with a newly developed digital control system. After completion of the retrofit, turbine valve tests were performed to ensure the integrity of each valve's control function. The sequence of each valve test is composed of a closing process and a reopening process. To minimize megawatt variation which normally occurs during the test sequence, we employed a kind of compensator algorithm in the new digital control system which also have been used in the old system. There were difficulties finding optimal parameter settings for our new compensator algorithm because the power plant didn't allow us to perform necessary tuning procedures while the turbine is on load operation. Therefore an alternative measure for the compensator tuning which is independent of the turbine actual operation had to be implemented. So, a process model for the test was required to overcome this situation. We analyzed the operation data of the test and implemented the process model by use of input and output variable relations. Also we verified the process model by use of another condition's operating data. The result shows that the output of model is similar to the actual operation data.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 22-24 Oct. 1991
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• pp.1705-1711
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• 1991

On-line fault detection and diagnosis has an increasing interest in a chemical process industry, especially for a process control and automation. The chemical process needs an intelligent operation-aided workstation which can do such tasks as process monitoring, fault detection, fault diagnosis and action guidance in semiautomatic mode. These tasks can increase the performance of a process operation and give merits in economics, safety and reliability. Aiming these tasks, series of researches have been done in our lab. Main results from these researches are building appropriate knowledge representation models and a diagnosis mechanism for fault detection and diagnosis in a chemical process. The knowledge representation schemes developed in our previous research, the symptom tree model and the fault-consequence digraph, showed the effectiveness and the usefulness in a real-time application, of the process diagnosis, especially in large and complex plants. However in our previous approach, the diagnosis speed is its demerit in spite of its merits of high resolution, mainly due to using two knowledge models complementarily. In our current study, new knowledge representation scheme is developed which integrates the previous two knowledge models, the symptom tree and the fault-consequence digraph, into one. This new model is constructed using a material balance, energy balance, momentum balance and equipment constraints. Controller related constraints are included in this new model, which possesses merits of the two previous models. This new integrated model will be tested and verified by the real-time application in a BTX process or a crude unit process. The reliability and flexibility will be greatly enhanced compared to the previous model in spite of the low diagnosis speed. Nexpert Object for the expert system shell and SUN4 workstation for the hardware platform are used. TCP/IP for a communication protocol and interfacing to a dynamic simulator, SPEEDUP, for a dynamic data generation are being studied.

• 디지털융복합연구
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• 제16권12호
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• pp.563-569
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• 2018

본 논고는 디자인프로세스를 활용한 공간 아이덴티티 개발 모델에 관한 것이다. 연구의 주요 내용은 다음과 같다. 첫째, 디자인프로세스의 개념을 정의하고 그 외에 다양한 디자인프로세스 모델을 연구하였다. 둘째, 공간 디자인프로세스의 의미에 대해 연구하고 개념 정의를 하였다. 셋째, 공간 아이덴티티 개발을 위한 공간디자인프로세스 개념 모델을 연구 개발하였다. 마지막으로 복합적이고 다양한 형태의 공간에 디자인프로세스를 적용해 공간 아이덴티티를 정의할 수 있는 개념모델을 연구해 제시하였다. 본 연구는 디자인프로세스와 공간 아이덴티티에 대한 연구를 위해 관련 문헌 조사 및 다양한 이론적 고찰 등 실증주의적 연구 방법을 적용하였다. 또한 공간디자인프로세스에 대한 연구는 선행 연구 자료들을 바탕으로 한 간접적인 조사방법을 채택하였다. 본 연구의 목적은 디자인프로세스의 다양한 모델들을 분석해 공간디자인 아이덴티티를 개발하는 방법과 적용 범위를 연구하는데 있다.

• 대한산업공학회지
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• 제32권3호
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• pp.191-199
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• 2006

Effective management of business processes is a crucial issue to every enterprise in e-business environment. What's needed is a new framework of applications that can automatically manage distributed and heterogeneous business processes that span multiple functions of a company. In this paper, we propose technical design of a new enactment model that can coordinate such business process that involves multiple functional units or even multiple companies. In our approach, a process model is decomposed into several structural units, called 'process block', according to their procedural characteristics. Each of them is controlled by autonomous enactment units that can communicate with each other using a mutually agreed coordination protocol. The protocol takes the use of 'associative communication' concept, which allows the autonomy for each unit and secure the correctness of process execution.

• 한국산업정보학회:학술대회논문집
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• 한국산업정보학회 1999년도 춘계학술대회 발표논문집
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• pp.135-144
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• 1999

A major concern in Concurrent Engineering is the control and management of workload in a period of process. As a general rule, leveling the peak of workload in a certain period is difficult because concurrent processing is comprised of various processes, including overlapping, paralleling and looping. Therefore, workload management with resource constraints is so beneficial that effective methods to analyze design process This study presents a procedure to transform the IDEF3 process model into the precedence logic network model for more useful assessment of the process. This approach is expected to facilitate resolving resource constrained scheduling problems more systematically in Concurrent Engineering environment.

• 한국디지털건축인테리어학회논문집
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• 제12권3호
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• pp.111-117
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• 2012

The study presents the way to maximize the functionality and the effectiveness of the BIM model, and the type of information used in the overall process of construction projects. If the designing process is the generator of architecture information, then the step-by-step BIM model created in the process is the container for formation and property information. BIM written rules and methods are proposed in order for the architectural BIM model structured in the early stages of designing to go through a process of review and collaboration, and to be seamlessly linked to the basic designing steps. Accordingly, the BIM model construction and operation strategy suggested will substantially reduce the work of designing, structuring, and collaborating, that will be shared and linked.

• 산업경영시스템학회지
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• 제35권3호
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• pp.163-172
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• 2012

Regarding project management, many organizations have developed and distributed general project management knowledge systems, and application fields use the knowledge systems to apply the process suitable for characteristics of a project. This study suggests project management process models to apply to system integration projects. This system integration project management process model is composed of six top processes of initiation, preparation for contract, planning, implementation management, coordination and control, and termination and transfer. The five processes are re-divided into 25 bottom processes. These processes are expressed as input, control, output, and mechanism by using the IDEF0 model. For this model development, it has chosen the items which constituted a process through a questionnaire of experts.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 추계학술대회 논문집
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• pp.632-636
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• 2005

Design process model represents how a design project proceeds. It encompasses the individual activities of design, their precedence relationships, and the relevant information related to each activity. In contrast to the conventional visual representation methods, ontology-based process model is machine-readable, and therefore it can be implemented in a software system without repeating the whole steps of coding, compiling and link. This paper proposes a framework for design process ontology that defines the relevant objects and attributes in the design process as well as the relationships between them. An example for injection mold design process is shown to explain the substance of the design process model.