• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1359-1363
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• 2009

The object of this research is to develop a simulation system for earthmoving operations in consideration of the impact of congestion in-between equipment and existing traffic flow around the site. The congestion in-between equipment and traffic flow affect work productivity. The conventional discrete event simulation, however, has limitations in simulating the flow of construction equipment. To consider the impact of congestion in-between equipment and existing traffic flow, in this paper, a multi-agent based simulation model that can realize characteristics of truck behavior more accurately to consider the impact of congestion was proposed. In this simulation model, multiple agents can identify environmental changes and adapt themselves to the new environment. This modeling approach is a better choice for this problem since it describes behavioral characteristics of each agent by sensing changes in dynamic surroundings. This study suggests a detailed system design of the multi-agent based simulation system.

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.439-444
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• 2011

As construction projects have been getting larger and more complex, a single individual or organization cannot have complete knowledge or the abilities to handle all matters. Collaborative practices among heterogeneous individuals, which are temporarily congregated to carry out a project, are required in order to accomplish project objectives. These organizational knowledge creation processes of project teams should be understood from the active and dynamic viewpoint of how they create information and knowledge rather than from the passive and static input-process-output sequence. To this end, agent-based modeling and simulation which is built from the ground-up perspective can provide the most appropriate way to systematically investigate them. In this paper, agent-based modeling and simulation as a research method and a medium for representing theory is introduced. To illustrate, an agent-based simulation of the evolution of collaboration in large-scale project teams from a game theory and social network perspective is presented.

• 디지털산업정보학회논문지
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• 제17권1호
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• pp.25-34
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• 2021

Availability is one of the important factor for developing weapon system, because it indicates the mission capability and sustainable life cycle management of weapon system. Recently, as weapon system becomes more advanced and more complex, availability estimation becomes more important to reduce the life cycle cost of weapon system. Modeling and simulation(M&S) is useful method to describe the availability of complex weapon system applying operational environment and maintenance plan. Especially agent based model(ABM) has the strength to describe interactions between agents and environments in complex system. Therefore, this paper presents the availability estimation of weapon system using agent based model. The sample data of part list and reliability analysis is applied to build availability estimation model. User agent and mechanic agent are developed to illustrate the behavior of operation and maintenance using formal specification. Storage reliability is applied to describe failure of each parts. The experimental result shows that this model is quite useful to estimate availability of weapon system. This model may estimate more reasonable availability, if full scale data of weapon system and real field data of operation is provided.

• 한국항해항만학회지
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• 제28권10호
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• pp.917-923
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• 2004

공간정도의 생산과 수요가 본격화되고 있으나 공간정보의 본질과 응용특성을 고려한 공간정보모델링체계에 대해서는 특성화된 연구가 충분히 수행되고 있지 않다. 특히, 기존의 모델링기법들은 대부분 정보의 표현과 분석기능을 대상으로 개발되었으므로 보다 고차원적인 의사결정지원과 자율적인 업무수행을 위한 이론적 모델의 개발에 대한 논의가 최근의 지식정보화환경에서 더욱 요구되고 있다. 본 논문에서는 공간정보시스템을 모델링하기 위한 여러 기반개념들과 모델링 유형에 대한 고찰을 통해, 기존 모델링 방법에 대한 문제점을 분석하여 효율적인 공간적 업무수행을 위한 요구사항을 도출한다. 또한, 도출된 공간정보모델링의 요구사항에 적합한 이론적인 접근방안으로서 에이전트 기반의 공간모델링 프레임워크를 제안하며, 이러한 프레임워크를 해양지리정보분야에 적용하기 위한 고려사항도 함께 제시한다.

• 한국시뮬레이션학회논문지
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• 제28권3호
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• pp.1-9
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• 2019

주식 시장, 인구 동향, 전염병 확산 예측, 도로교통체계 개발과 같이 다양한 분야에서 활용되고 있는 에이전트 기반 시뮬레이션 분야의 에이전트는 응용분야에 따라 각기 다른 형태로 발전되어왔다. 하지만 다학제 융합적 협력 요구되는 문제의 해결에 있어서 확장 가능한 형태의 에이전트 구조가 필요하며 이를 지원할 에이전트 모델링 및 시뮬레이션 환경이 필요하다. 본 연구는 다양한 분야의 에이전트를 수용하기 위하여 공통구조를 체계요소구조와 이산사건시스템형식론을 활용하여 명세할 수 있는 방법을 제시하고, 제시된 명세방법을 지원할 수 있는 개발 환경인 SESManager를 제안한다. 제안된 환경은 계층적으로 에이전트 구조를 정의하고 에이전트를 합성할 수 있도록 함으로써 사용자의 시뮬레이션 목적에 맞게 에이전트 시뮬레이션을 수행할 수 있도록 돕는다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2001년도 춘계학술대회 논문집
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• pp.393-397
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• 2001

This paper addresses an Intelligent Agent-based Open Architecture Cell Controller for Intelligent Manufacturing System(IMS). With an Intelligent Agent approach, the IMS will be a independent, autonomous, distributed system and achieve a adaptability to change of manufacturing environment. As the development methodology of Open Architecture Cell Controller, an object-oriented modeling technique is employed for building models associated with IMS operation, such as resource model, product model, and control model. Intelligent Agent-based Open Architecture Cell Controller consists of two kinds of dependant agents, that are the active agent and the coordinator agent. The Active agent is contributed to control components of IMS in real-time. The coordinator agent has great role in scheduling and planning of IMS. It communicates with other active agents to get information about status on system and generates the next optimal task through the making-decision logic and dispatch it to other active agent.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.59.5-59
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• 2001

Multi-agent robot system is the system which executes by cooperating with each robots and controlling several robots. Capability and function of each robot must be considered for cooperation behavior. Furthermore, it is necessary to analyze the given environment and to replace complex task with some simple tasks. Analysis of the given environment and role assignment for the given tasks are composed of discret event. In this paper, the hierarchical controller for multi-agent robot system using the petri-net state diagram is proposed. The proposed modeling method is implemented for soccer robot system. The effectiveness of proposed modeling method is shown through experiment.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2006년도 학술대회 1부
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• pp.918-925
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• 2006

Recent development of teachable agent provides learners with active roles as knowledge constructors and focuses on the individualization. The aim of this adaptive agent is not only to maximize the learner's cognitive functions but also to enhance the interests and motivation to learn. In order to establish the relationships among user characteristics and response patterns and to extract the algorithm among variables, we measured the individual characteristics and analyzed logs of the teachable agent named KORI (KORea university Intelligent agent) through the student modeling. A correlation analysis was conducted to identify the relationships among individual characteristics, user responses, and learning outcomes. Among hundreds of possible relationships between numerous variables in three dimensions, nine key user responses were extracted, which were highly correlated with either individual characteristics and learning outcomes. The results suggest that certain type of learner responses or the combination of the responses would be useful indices to predict the learners' individual characteristics and ongoing learning outcome. This study proposed a new type of dynamic assessment for individual differences and ongoing cognitive/motivational learning outcomes through the computation of responses without measuring them directly. The construction of individualized student model based on the ongoing response pattern of the user that are highly correlated with the individual differences and learning outcome may be the useful methodology to understand the learner's dynamic change during learning.

• 산업공학
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• 제18권4호
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• pp.390-401
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• 2005

In this paper, we propose an efficient internet-based logistics brokerage concept which can overcome the weakness of the traditional off-line method to intermediate between vehicle owners and shippers for matching empty vehicles and freights. For defining a business model based on the new concept and implementing an information system, it is necessary to analyze the business process for the internet-based logistics brokerage using a modeling methodology. In this paper, we analyze the logistics brokerage process using the UN/CEFACT Modeling Methodology (UMM) being utilized as a standard modeling methodology in the area of electronic commerce. After analyzing the business process, we can expect that the UMM can be used as a useful tool for modeling the business process of electronic commerce in which the description of the collaborative work is very important.

• 인터넷정보학회논문지
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• 제3권4호
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• pp.19-26
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• 2002

본 논문에서는 워크플로우 관리 시스템의 빌드타임 기능에 속하는 모델링 시스템을 다중 에이전트 기반으로 구현하였다. 본 논문에서 제안된 다중 에이전트 기반 워크플로우 모델링 시스템은 클라이언트의 경량을 위하여 자바를 이용하였으며, 프로세스 정의에 필요한 세션, 조직, 관련데이터, 응용프로그램 속성들을 별도의 에이전트로 구성하였다 또한, 프로세스 정의를 위한 모델은 ICN(Information Control Net)을 이용하여 작성된 모델의 문법(syntax)를 검증하였으며, 타 워크플로우 엔진과의 연동을 위하여 WfMC에서 정의된 인터페이스 형태인 WPDL로 import/export할 수 있는 기능을 제공한다.