• Journal of KIISE:Computing Practices and Letters
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• v.5 no.6
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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.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.04a
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• pp.83-88
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• 2000

본 논문은 mobile agent 시스템 설계의 예를 보인다. 본 시스템 설계에서 구축될 시스템의 사양은 자연어로 묘사되어 있다고 가정한다. 본 시스템 설계 과정은 다음과 같다. 첫째, 시스템 사양으로부터 필요한 사이트들을 분별하고, 둘째, 사이트간에 송수신 되는 정보들을 분별해, 이들 정보 개체들을 각각 한 개의 agent로 구현한다. 셋째, 각 Agent가 수행할 과업을 Petri net으로 정확히 표현한다. Agent가 정의되는 위치에 따라 필요한 통신량이 좌우됨으로 통신량을 최소화시키는 관점에서 Agent 정의의 위치를 결정한다.

• Journal of Information Processing Systems
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• v.2 no.3 s.4
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• pp.183-188
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• 2006

A RMON agent system, which locates on a subnet, collects the network traffic information for management by retrieving and analyzing all of the packets on the subnet. The RMON agent system can miss some packets due to the high packet analyzing overhead when the number of packets on the subnet is huge. In this paper, we have developed a light-weight RMON agent system that can handle a large amount of packets without packet loss. Our RMON agent system has also been designed such that its functionality can be added dynamically when needed. To demonstrate the dynamic reconfiguration capability of our RMON agent system, a simple port scanning attack detection module is added to the RMON agent system. We have also evaluated the performance of our RMON agent system on a large network that has a huge traffic. The test result has shown our RMON agent system can analyze the network packets without packet loss.

• The KIPS Transactions:PartC
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• v.8C no.6
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• pp.815-820
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• 2001

This paper presents a distributed mobile architecture aimed to support the mobility of mobile station. The proposed architecture considers three significant objects；mobile station (MS), mobile agent (MA) which logically represents mobile station in the wireline network, and trace agent (TA) to represent application server (AS) providing application service to mobile station. The mobile agent is made closely coupled with the mobile station while the trace agent is made closely coupled with the application server. During the handoff process, a flow control mechanism is considered to correct packet loss and out-of-sequence packets problem. The result of analytic additional time delay due to handoff processing is presented and simulation was performed to check the additional time delay as well as the correctness of handoff algorithm.

• The Transactions of the Korea Information Processing Society
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• v.7 no.3
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• pp.862-870
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• 2000

Recently, according to the rapid development of internet and communication technologies, a lot of works based on network techniques have been developed. In relation to this trend, the agent systems that had been studied in the early AI have been being studied greatly in association with the network techniques. This paper present a design model of a secretary agent system in which each secretary agent can manage the schedules of her/his superior, and the descriptions about the implementation of the secretary agent system. In the presented secretary agent system, a database system and a knowledge-based systems are included and cooperated with each secretary agent to provide the ability of manipulating lots of schedule data and making decisions on them. This paper also shows that the presented secretary agent system can behavior like a real secretary through the various superior-secretary-meeting-requester interactions, which is different from the roup scheduling programs or personal scheduling programs.

• The Journal of Information Systems
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• v.14 no.3
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• pp.53-58
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• 2005

In this study, we will employ a multi-agent for the search and extraction of data in a distributed environment. We will use an Integrator Agent in the proposed model on the Hierarchical Clustering and Association Rule Discovery(HCARD). The HCARD will address the inadequacy of other data mining tools in processing performance and efficiency when use for knowledge discovery. The Integrator Agent was developed based on CORBA architecture for search and extraction of data from heterogeneous servers in the distributed environment. Our experiment shows that the HCARD generated essential association rules which can be practically explained for decision making purposes. Shorter processing time had been noted in computing for clusters using the HCARD and implying ideal processing period than computing the rules without HCARD.

• Journal of the Korean Society for Heat Treatment
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• v.34 no.2
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• pp.60-65
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• 2021

In this study, the effect of pressure type and foaming agent on the microstructural change of Al foam produced by powder compact processing was investigated. Better foaming characteristic is easily obtained from extrusion process with strong plastic deformation and preheating than that by uniaxial pressing with preheating. In current powder compact foaming process using TiH2/MgH2 mixture as a foaming agent, a temperature of 670℃ and addition of 30% MgH2 in TiH2 foaming agent was chosen as the most suitable foaming condition. The aluminum (Al) foams with maximum porosity of around 70%, relatively regular pore size and distribution were successfully produced by means of the powder metallurgy method and extrusion process.

• The Transactions of the Korea Information Processing Society
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• v.7 no.10
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• pp.3105-3112
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• 2000

• Proceedings of the Korea Information Processing Society Conference
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• 2002.04a
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• pp.553-556
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• 2002

인터넷과 World Wide Web의 폭발적인 성장은 네트워크에 많은 정보와 리소스를 제공하고 있다. 그렇지만, 대부분의 사용자들에게 있어서 인터넷 리소스의 사용은 Bandwidth에 의하여 많은 제한을 받고 있다. 그러나 애플릿 방식을 통해서 HTML이 가지고 있는 정적인 면과 CGI의 bandwidth에 따르는 성능 저하 문제를 해결할 수 있다. Mobile Agent는 사용자의 특정 목적을 성취하기 위해서 사용자의 컴퓨터에서 출발하여 네트워크를 이동하면서 작업을 수행한다. 이렇게 수행할 수 있는 코드가 네트워크를 통하여 전송되고, 네트워크에서 수행되기 때문에, 자연스럽게 mobile code의 보안에 중요한 문제가 발생한다. 본 연구에서는 이러한 Mobile Agent를 사용하는 분산 웹 환경에서, Mobile Agent를 호스트와 Agent를 보호할 수 있는 방안을 모색보고, Mobile Agent 의 개념과 Mobile Agent를 구성하면서 생기는 문제를 기술하고, 이러한 문제를 해결하기 위해서 연구중인 방법을 제시하고, 제시된 방법 중에서 현실적으로 적용 가능한 방법을 사용하여 이동 에이전트의 보안 시스템을 설계해 보도록 한다.

• International Journal of Contents
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• v.3 no.1
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• pp.24-28
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• 2007

This paper embodies the agent based cinder monitoring system which supports PDA(Personal Digital Assistant). Monitoring system automatically manages data by using data managing agents such as a state managing agent, a location managing agent, a badness managing agent, a circumstances managing agent, etc, and uses a massive data processing agent to manage massive data. The development of agent based data monitoring system for the stable cinder reuse will be an epoch-making method to develop the process mechanized or manual-labored that widely spreads into the real-time automated process.