• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 1998.10a
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• pp.216-221
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• 1998

dynamic modelling method is applied to the driving simulation which has the calculable model of engine, transmission, vehicle. And driving pattern is used for database by actual tests and analyzed in neural network system. The simulation is compared to real test results and structures to the tracked vehicle powertrain.

• Proceedings of the Korean Information Science Society Conference
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• 2003.04d
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• pp.307-309
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• 2003

초고속 인터넷 망이 빠른 속도로 구축이 되고, 네트워크에 대한 해커나 침입자들의 수가 급속히 증가함에 따라, 실시간 고속 패킷 처리가 가능한 네트워크 침입 탐지 시스템이 요구되고 있다. 이러한 실시간 고속 네트워크 침입 탐지 시스템의 핵심 기술로써 수신된 패킷에서 침입 정보를 고속으로 탐지해내는 침입 탐지 엔진 기술은 필수적이다. 본 논문에서는 인텔의 IXP1200 네트워크 프로세서를 기반으로 하는 하드웨어 구조상에서 고성능 네트워크 침입 탐지 시스템을 위한 실시간 고속 탐지 엔진 구조와 프로그래밍 방법을 제안하였다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2019.01a
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• pp.71-72
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• 2019

올해 전세계게임 시장 매출 절반 이상을 모바일 게임이 차지했고 계속 성장해 가는 추세이다. 그중 항상 순위권 안에 들어가는 장르로 방치형 RPG 게임이 있다. 그러므로 게임 시장 추세에 맞혀 멀티 플랫폼이 지원되는 유니티 엔진을 이용하여 방치형 RPG 게임을 개발한다. 본 논문에서는 Unity 엔진의 기능을 사용하여 방치형 RPG 게임을 개발하는 법에 관해 설명한다.

• Proceedings of the IEEK Conference
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• 2003.07d
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• pp.1263-1266
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• 2003

One of the hardest problems in implementation of digital neural network are extension of synapses and programmability for relocating neurons. This paper Proposes a new hardware structure to solve these problems. The proposed structure can reconfigure network connections without alteration of basic design, and extend number of synapses attached to one neuron. Also, it is possible to extend the number of neurons and layers by connecting many MPUs(Modular Processing Unit). Generality and extensibility are verified by composing various kinds of Perceptorn and Kohonen networks using the architecture proposed in this paper and the verification performances compares well with HDL simulation results as well as the results of C modelling.

• Journal of information and communication convergence engineering
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• v.14 no.3
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• pp.137-146
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• 2016

In this paper, we introduce a quality of experience (QoE)-provisioning mobility management scheme. The emphasis is on a mobility-aware QoE solution enabling network components to recognize the mobility pattern of an end-user and to prepare a handover in advance. We further focus on an energy-adaptive QoE solution based on the energy profile providing the preferred pattern of energy consumption and an energy preference check engine determining whether the provision of the service that the end-user requested is suitable to QoE or not. Lastly, we concentrate on a network-based intelligent mobility management scheme adopting the calm service and the balance. Consequently, we conclude that the proposed schemes improve the handover latency, QoE metrics, and energy efficiency simultaneously.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.502-504
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• 2002

기존 라우터시스템에서의 패킷 포워딩 엔진은 최적화된 룩업 알고리즘을 통한 소프트웨어 방식으로 구현되었으나, 처리해야 할 데이터가 폭주하면서 전용화된 룩업칩을 이용한 포워딩 엔진으로 대체되어 가고 있다. 그러나, 이러한 룩업칩 기반 패킷 포워딩 엔진은 가격이 비싼 것은 물론. 급변하는 통신 프로토콜에 적응하기 힘든 단점을 가지게 되었으며, 이로 인해서 최근에는 Network Processor 기반의 패킷 포워딩 엔진에 대한 개발이 활발해지고 있다. 본 연구소에서도 초고속광가입자망 사업에 적용되는 포워딩 엔진을 IBM의 2.5G Network Processor 인 NP4GS3 칩을 이용하고 있으며, GbE／POS／E-PON 등의 인터페이스를 지원하고 있다. 또한 본 사업에서는 가입자망에서의 Layer2 broadcasting시의 트래픽 폭주와 가입자간의 보안 기능 등을 지원하기 위해 VLAN 서비스를 적용할 예정이다. 본 논문에서는 일반적인 VLAN 기능에 대해서 알아보고, IBM NP4GS3에서 지원되는 VLAN 기능을 분석하였으며, 이를 토대로 NP4GS3 기반 패킷 포워딩 엔진에서 VLAN 구현 방안에 대하여 기술하였다.

• Journal of Biosystems Engineering
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• v.23 no.4
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• pp.391-398
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• 1998

Effective use of agricultural informations is crucial for 21 century farming. An interactive agricultural machinery information system was developed. It consisted of databases, knowledge bases, expert systems, a server engine, clients for a multimedia agricultural machinery information system based on Java and distributed objects technology. It is supposed to be served through a nationwide super information communication network for my farmers to utilize it interactively and quickly. Several user-friendly interface programs for users were developed to use texts, static k dynamic images, and expert systems easily. Tools for providing the informations were built with JAVA. Information providers permitted to access to the system such as agricultural machinery companies can easily add or modify the informations using distributed object technology. This system can interact among three groups : prime information provider (or system manager), permitted information providers, and farmers.

• Journal of Communications and Networks
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• v.12 no.4
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• pp.375-381
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• 2010

A flooding attack, such as DoS or Worm, can be easily created or even downloaded from the Internet, thus, it is one of the main threats to servers on the Internet. This paper presents an online real-time network response system, which can determine whether a LAN is suffering from a flooding attack within a very short time unit. The detection engine of the system is based on the incremental mining of fuzzy association rules from network packets, in which membership functions of fuzzy variables are optimized by a genetic algorithm. The incremental mining approach makes the system suitable for detecting, and thus, responding to an attack in real-time. This system is evaluated by 47 flooding attacks, only one of which is missed, with no false positives occurring. The proposed online system belongs to anomaly detection, not misuse detection. Moreover, a mechanism for dynamic firewall updating is embedded in the proposed system for the function of eliminating suspicious connections when necessary.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2000.11a
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• pp.902-905
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• 2000

As the manufacturing processes of automotive engine piston, gravity die-casting, squeeze casting, hot forging and powder forging process are generally used for the various specifications. As the semi-solid forming(SSF) is compared with conventional casting such as gravity die-casting and squeeze casting for the characteristics of its process, the product without inner defects such as gas porosity and segregation can be obtained and its microstructure is globular grain. In SSF process, the materials are heated up to the temperature between the solvus and liquidus line at which the materials exists in the form of liquid-solid mixture. In this time, Discussion is given about reheating process of row material and results are presented regarding accurate temperature and process variables controlling for right solid fractions.

• Journal of the Korean Institute of Intelligent Systems
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• v.14 no.5
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• pp.630-634
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• 2004

According to the progress of an information-oriented society, more human friendly systems are required. The systems can be implemented by a kind of intelligent algorithms. In this paper we propose the possibility of the implementation of an intelligent algorithm from gene, behavior of human beings, which has some properties such as self organization and self regulation. The regulation of gene behavior is widely analyzed by Boolean network. Also the SORE (Self Organizable and Regulating Engine) is one of those algorithms. This paper does not report detailed research results; rather, it studies the feasibility of gene behavior in biocontrol systems based upon computer simulations.