• Journal of the Korea Institute of Information and Communication Engineering
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• v.10 no.9
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• pp.1590-1595
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• 2006

This paper proposes a technique of user oriented document ranking using user refile to provide more satisfied results which reflect preference of specific users. User profile is constructed to represent his or her preference. User pfofile consists of 'term array' and 'preference vector' according to the interest field of one. And the User profile for a particular person is updated by 'user access', 'latent relaeon', 'User Profile' proposed in this paper. The latent structures of documents in same domain are analysed by singular value decomposition(SVD). Then, the rank of documents is determined by comparison of user profile with analyzed document on the basis of relevance.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.6 no.8
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• pp.1346-1351
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• 2002

It is very complex to construct Intrusion Detection System in distributed network environment than simple ones. Especially, In the collecting and analysis of logdata from out different operating system break out much problem. So In this paper, We present a Intrusion Detection System model applying agent teaming system to solve these problem. We apply the data Mining algorithm for agent learning.

• Convergence Security Journal
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• v.6 no.3
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• pp.13-19
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• 2006

I would like to explain a method how to get important data from a volatile data securely, when we are not available to use network in computer system by incident. The main idea is that the first investigator who collects a volatile data by applying scripts built in USB media should be in crime scene at the time. In according to volatile data, he generates hash value, and gets witness signature. After that, he analyses the volatile data with authentication in forensics system.

• Convergence Security Journal
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• v.8 no.1
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• pp.129-141
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• 2008

This paper analyzes repairing methods in terms of symptoms of hard disk through maker's knowhow and skill from experience. However, though an user tries this method, if the user is not skilled person, it can be failed. A defect Hard disk should be diagnosed and treated carefully. And also it should be executed after enough practice. This analyzation was tried by examination with the naked eye, sound, and the frequency of symptoms. And the result can be precious data for restoration of critical evidence.

• Proceedings of the KIEE Conference
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• 2001.11c
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• pp.390-393
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• 2001

집안에서 사용하는 가전제품이 점차 늘어나고 또한 이들 가전에 대한 상호 네트워킹의 필요성이 절실해지는 요즘 홈 네트워킹의 시장이 점차 열리고 있는 추세이다. 실제적인 홈 네트워크를 구성하기 위해서는 집안에서뿐만 아니라 집 밖에서도 이들 가전제품을 제어할 수 있도록 만들어야하는데 그러기 위해서는 홈 게이트웨이의 구성이 필수라 할 수 있다. 그러기 위해서는 집안까지 들어오는 통신라인이 있어야 하는데 지금 현재 가장 많이 사용하고 있는 방법은 전화선과 케이블 망을 이용하는 것이다. 본 논문에서는 케이블 망을 이용한 홈 게이트웨이의 접속모듈을 구현하여 가정에서도 쉽게 네트워크를 구성할 수 있는 환경을 만들 수 있게 하였다.

• Korean Journal of Ichthyology
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• v.12 no.3
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• pp.203-207
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• 2000

The synaphobranchid eel, Dysomma anguillare was redescribed on the basis of a specimen collected from the Yellow Sea, Chollabuk-do, Korea. The D. anguillare was characterized by many fleshy plicae at the front of upper and lower jaws, dorsal fin originated in slight advance than pectoral fin base, degenerated eyes, very short trunk and long tail, anus located below near tip of pectoral fin and no scales.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2008.02a
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• pp.117-120
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• 2008

무선 센서 네트워크란 물리적, 환경적 현상을 감지하기 위해 센서를 사용하는 수백 개에서 수천 개의 센서 노드로 구성된 네트워크를 말한다. 이러한 무선 센서 네트워크에서 라우팅 보안은 중요하다. 센싱된 데이터가 사용자에게 전달되지 않는다면 네트워크는 그 기능을 제대로 수행한다고 할 수 없기 때문이다. 따라서 무선 센서 네트워크에서 데이터가 목적지에 안전하게 도달하도록 하는 라우팅 보안 기법은 필수적이다. 최근의 라우팅 보안은 암호학적 기법, 네트워크 컴퓨터 알고리즘을 이용한 기법 등 다양한 접근 방법으로 연구가 이루어지고 있다. 본 논문에서는 최근의 무선 센서 네트워크 라우팅 보안 기법의 동향을 살펴보고 이들을 비교 분석한다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2003.06a
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• pp.223-227
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• 2003

A new flexible electronic packaging technology and its medical applications are presented. Conventional silicon chips and electronic modules can be considered as "mechanically rigid box." which does not bend due to external forces. This mechanically rigid characteristic prohibits its applications to wearable systems or bio-implantable devices. Using current MEMS (Microelectromechanical Systems) technology. a surface micromachined flexible polysilicon sensor array and flexible electrode array fer neural interface were fabricated. A chemical thinning technique has been developed to realize flexible silicon chip. To combine these techniques will result in a realization of truly flexible sensing modules. which are suitable for many medical applications.

• 제어로봇시스템학회:학술대회논문집
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• 1992.10a
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• pp.436-440
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• 1992

As an approach to design the intelligent controller, this paper proposes a new FNN(Fuzzy Neural Network) control method using the hybrid combination of fuzzy logic control and neural network. The proposed FNN controller has two important capabilities, namely, adaptation and learning. These functions are performed by the following process. Firstly, identification of the parameters and estimation of the states for the unknown plant are achieved by the MNN(Model Neural Network) which is continuously trained on-line. And secondly, the learning is performed by FNN controller. The error back propagation algorithm is adopted as a learning technique. The effectiveness of the proposed method will be demonstrated by computer simulation of a two d.o.f. robot manipulator.

• 제어로봇시스템학회:학술대회논문집
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• 1992.10a
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• pp.698-702
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• 1992

In this paper, Micro-Genetic algorithms(.mu.-GAs) is proposed on a minimum-time path planning for robot manipulator, which is a kind of optimization algorithm. The minimum-time path planning, which can allow the robot system to perform the demanded tasks with a minimum execution time, may be of consequence to improve the productivity. But most of the methods proposed till now suffers from a significant computation burden and can't often find the optimal values. One way to overcome such difficulties is to apply the Micro-Genetic Algorithms, which can allow to find the optimal values, to the minimum-time problem. This paper propose an approach for solving the minimum-time path planning by using Micro-Genetic Algorithms. The effectiveness of the proposed method is demonstrated using the 2 d.o.f plannar Robot manipulator.