• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2001년도 The Pacific Aisan Confrence On Intelligent Systems 2001
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• pp.179-185
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• 2001

Mobile agents have the unique ability to transport themselves from one system in a network to another. The ability to travel allows mobile agents to move to a system that contains services with which they want to interact and then to take advantage of being in the same host or network as the service. But most of conventional mobile agent systems require that the users or the programmer should give the mobile agent its detail behavioral script for accomplishing the given task. And during its runtime, such mobile agents just behave according to the fixed script given by its user. Therefore it is impossible that conventional mobile agents autonomously build their own plants and execute them in considering their ultimate goals and the dynamic world states. One way to overcome such limitations of conventional mobile agent systems is to develop an intelligent mobile agent system embedding a reactive planner. In this paper, we design both a model of agent mobility and a model of inter-agent communication based upon the representative reactive planning agent architecture called JAM. An then we develop an intelligent mobile agent system with reactive planning capability, IMAS, by implementing additional basic actions for agent moves and inter-agent communication within JAM according to the predefined models. Unlike conventional mobile agents. IMAS agents can be able to adapt their behaviors to the dynamic changes of their environments as well as build their own plans autonomously. Thus IMAS agents can show higher flexibility and robustness than the conventional ones.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제5권6호
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• pp.793-800
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• 1999

TMN Agent Platform은 망 요소의 운영상태와 자원들을 GDMO에 따라 관리객체(Managed Object : MO)로 모델링 하고, 자원들의 현재 상태를 유지하며, 관리자(Manager)로부터의 망 관리 기능 요구에 따라 조작된다. 그러므로, 에이전트의 성능향상은 전체적인 통신망 관리의 성능향상에 직접적인 영향을 미친다.본 논문에서는 TMN 에이전트의 기능요구 사항을 분석하고, 이를 토대로 성능향상을 위해 멀티스레드 기법을 사용하는 병렬 처리 구조의 TMN Agent Platform의 기능구조를 제시한다. 또한 에이전트와 다양한 자원들간의 효율적인 메시지전달을 위한 체계를 제시하며, 구현된 TMN Agent Platform의 성능을 분석한다.Abstract TMN Agent manages the operational status and real-resources of network elements, such as switching nodes and transmission systems. It performs the requested management functions from manager and maintains consistent status data of real-resource. The performance of agent system affects directly the performance of network management operation. If the agent is implemented by sequential processing scheme with single process, the agent processing can be delayed or blocked according to the status of real-resources. This problem can be solved by parallel and distributed processing scheme.To improve the processing performance of TMN Agent, we propose a TMN Agent Platform's functional architecture that is based on parallel processing with multi-tread and effective message transferring scheme between agent and various real-resource. We analyze the performance of the implemented TMN Agent Platform.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1999년도 하계종합학술대회 논문집
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• pp.993-996
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• 1999

A mobile agent is a program which is capable of migrating autonomously from host to host in the heterogeneous network, to perform some computation on behalf of the user. Mobile agents have many advantages in the distributed computing environment. But they are likely to suffer many attacks on the security due to the mobility. In order to make use of a mobile agent in the real applications, the security issues must be addressed. We deal with the problem which is concerned with protecting a mobile agent in transit and detecting a mobile agent clone. In this paper we propose a trust center based secure mobile agent transfer protocol. This protocol transfers a mobile agent securely from host to host and detects a mobile agent clone. We further show the security of the protocol against many attacks.

• 보건행정학회지
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• 제11권4호
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• pp.21-37
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• 2001

The purpose of this study is to examine internet agent of IT(Information Technology) in health care industry Since IT is essential for corporate strategy in service management, this section examines IT in health care service, especially from the view of 'Agent Technology' that has been recently issued. Intelligent agent is a new paradigm for developing software applications. More than this, agent-based computing has been hailed as 'the next significant break-through in software development' and 'the new revolution in software'. And health care service is a non-mechanic, human-based service. This paper reviewed what possible suggestions or advices can be made to the health care service. Since many health care services using internet have been attempted over the recent years, this study will hopefully be able to come up with good suggestions from many aspects. Thus, information inequality between producer(physician) and consumer(patient) in health care service will be decreased through the introduction of agent technology.

• 전기학회논문지
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• 제57권4호
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• pp.537-542
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• 2008

The protection against transient instability and consequent out-of-step condition is a major concern for the utility industry. Unstable system may cause serious damage to system elements such as generators and transmission lines. Therefore, out-of-step detection is essential to operate a system safely. Also, a multi-agent system is one that consists of a number of agents, which interact with one another. Multi-agent systems(MAS) can offer the flexibility and the adaptability to the previous algorithm. In this paper, the detection algorithm of out-of-step is designed by multi-agent system and implemented by EMTP-MODELS. To verify performance of the proposed algorithm based on multi-agent system, simulations by EMTP have been carried out.

• 한국전자거래학회지
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• 제8권1호
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• pp.55-70
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• 2003

With the gradual growth of the electronic commerce various forms of shopping malls are constructed, and their searching methods and function are studied many ways. However, the recent outcome is still inadequate to search for goods for the tastes and demands of customers. To construct the shopping mall on the electronic commerce and help customers with purchasing goods, the efficient interface for the customers to contact the shopping malls should be founded and the customers should be able to search the goods they want. Therefore, in this paper, we designed the Intelligent Integration Agent System (IIAS) using the multi-agent formed by the integration agent which integrates the case based reasoning(CBR) and the rule based reasoning(RBR) and the user agent which manages users' profiles. IIAS performs the rule based reasoning on the subject issue first, then provides the unsatisfying search results from the rule-base reasoning to the customers through the user agent, which enables the search of the goods most similar to the ones that meet the tastes and demands of the customers. That is, the accuracy and the speed has been improved by reasoning with the similarity adjustable integration agent which can pick out the goods of customers wants by modifying the weights of properties according to those of the customers.

• 전기학회논문지
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• 제56권4호
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• pp.660-668
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• 2007

In order to improve the efficiency of service restoration function in the current Distribution Automation System (DAS), in this paper it is proposed a more advanced and efficient service restoration approach using Multi-Agent technique based on distributed networks. In the current DAS, communication networks or protocol structures are centralized with communications between the central station and FRTU through 1:1 connection. In order to maintain the current systems and enhance the proposed Multi-Agent based service restoration scheme, a device of communication and intelligence, named MASX, is newly developed to make a FRTU as an agent to cooperate each others. the proposed system applied in a demo system for an distribution automation system and shows 8 times reduction of restoration time in restoration of blackouts.

• 정보처리학회논문지A
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• 제13A권5호
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• pp.455-464
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• 2006

다중 지역으로 구성된 이동 에이전트 컴퓨팅 환경에서 공간적 복제 기반 기법(SRBA: Spatial Replication-Based Approach)은 에이전트의 고장발생 시에도 그 에이전트의 수행이 대기 없이 계속적으로 진행될 수 있도록 하기 때문에, 대표적인 이동 에이전트 결함 포용 기법으로 사용될 수 있다. 그러나 이 기법을 실제의 이동 에이전트 기반 컴퓨팅 시스템에 적용하는데 있어서, 단계별로 복제된 이동 에이전트들에 대한 위치추적 및 관리비용을 최소화시키는 것이 필수적이다. 본 논문에서는 이러한 문제점을 해결하는 새로운 이동 에이전트 위치 관리 프로토콜인 SRLM(Location Management protocol for Spatial Replication)을 제안한다. 제안된 프로토콜은 단계군 내의 복제된 이동 에이전트들 중 대표 작업자만이 자신의 지역서버에게 위치등록하게 함으로써 기존 프로토콜에 비해 위치갱신 및 메시지 전달 비용을 매우 줄인다. 또한, 이 프로토콜은 한 단계 군에서의 대표 작업자 결함 발생시 새로운 대표 작업자의 선출로 인한 위치 관리 문제를 해결한다.

• 인터넷정보학회논문지
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• 제16권6호
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• pp.69-78
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• 2015

다중 에이전트 시스템에 대한 연구는 최근 다양한 분야에서 활성화 되고 있으며, 복잡한 시스템의 제어 및 최적화에 관한 연구가 진행되어 왔다. 본 논문에서는 게임 환경에서의 NPC(Non-Player Character) 시뮬레이션을 위한 다중 에이전트 시스템을 개발한다. 시스템 개발의 목적은 동적 이산사건 영역의 상황을 추론하여 신속하고 정확한 판단을 제공하고 에이전트 시스템의 최적화 과정을 보다 손쉽게 도와주는데 있다. 이를 위한 에이전트 시스템의 기본 모델은 페트리넷을 활용하여 구조를 단순화 하고 퍼지 추론엔진을 사용하여 다양한 상황을 결정할 수 있도록 하였다. 본 연구 시스템의 실험은 NPC간의 가상 전장 상황을 묘사하며, 퍼지 규칙이 적용된 에이전트와 유한 상태 기계로 구현된 NPC를 시뮬레이션 하여 에이전트의 승률과 생존율을 산출하였다. 실험 결과 퍼지 규칙 기반 에이전트의 승률과 생존율이 유한 상태 기계로 구현된 NPC보다 더 높은 것으로 나타났다.

• 한국정보시스템학회지:정보시스템연구
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• 제21권3호
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• pp.99-116
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• 2012

As a way to allocate lots of orders to many participants for vehicle allocation problem, this study has used an agent negotiation based reverse auction model. This agent negotiation provides coordination functions allowing all participants to make a profit, and accomplishing Pareto optimum solution from the viewpoint of a whole trucking cargo transportation network. In order to build a strategic cooperation relationship based on information sharing, this agent negotiation provides a coordination mechanism in which all the participants including consignors, brokerage firms, and car owners are able to attain their own profits, and also that ensure a competitive market. This study has tried to prove that the result of an agent-based negotiation is the Pareto optimal solution under the present market environment. We established a mathematical formulation for a comparison with the Integer Programming model, and analysing e-Marketplace, structure of shipping expenses and brokerage system in the trucking cargo transportation industry.