• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2000.10a
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• pp.63-67
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• 2000

A tool holder system has been designed to measure cutting forces in diamond turning. This system includes a 3-component piezo-electric tranducer. In this research, tool holder system is modeled by considering the element dividing, material properties, and boundary conditions using MSC/PATRAN. Mode and frequency analysis of structure is simulated by MSC/NASTRAN, for the purpose of developing the effective design. In addition, tool holder system is verified by vibration test using accelerometer. This system will aid to the development of Fast Tool Servo (FTS)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2003.05a
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• pp.142-143
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• 2003

Seaweeds are reconsidered as the biofilter and production component in the sustainable seaweed integrated aquaculture system (SSIAS) to .educe the environmental impact of nutrient rich effluent in the coastal ecosystem. The development of the SSIAS is initiated between China and Korea to remedy the coastal eutrophication caused by fed aquacultures. (omitted)

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2014.10a
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• pp.481-482
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• 2014

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2002.11a
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• pp.433-439
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• 2002

In this paper, we implemented technology assessment on the public R＆D activities in IT field in order to select the promising technologies, so called "star technology," making for national industry development. Technology assessment frame in this study included qualitative factors. IT technologies are classified five sector - network, wireless/broadcasting, SW/application/computer/terminal equipment, semiconductor/component. Expert opinion interviews on each field are carried out. Assessment factors consist of technology usefulness and technology competitiveness. In the final analysis, 23 technology items selected as a promising technologies and the results can be used public R＆D planning and If industry policy.

• Journal of the Korean Electrochemical Society
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• v.17 no.3
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• pp.139-148
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• 2014

Electrochemical energy-storage devices such as batteries and supercapacitors are important components in emerging portable electronic device, electric vehicle, and clean energy storage and supply technologies. This review describes recent progress in the development of nanostructured electrodes, the main component of the electrochemical energy-storage device, prepared by layer-by-layer (LbL) electrostatic assembly. Major advantages associated with, and challenges to, the fabrication of LbL electrodes, as well as the future outlook for expanding the application of LbL techniques, are discussed.

• Proceedings of the KIEE Conference
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• 1998.07b
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• pp.807-809
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• 1998

Plant Protection Systems(PPS) are those systems that initiate safety actions to mitigate the consequences of design basis events by sending signals to Reactor Trip Switch Gear System(RTSS) and Engineered Safety Features-Component Control Systems(ESF-CCS). This paper illustrates distinctive features and improved design concepts of Korea Next Generation Reactor(KNGR) based on the experience obtained through prototyping of PPS.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 1998.04a
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• pp.229-236
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• 1998

Port structures are one of the important infrastructure of the nation. To ensure safety and extend lifetime of the existing port structures, it is necessary to develop proper maintenance program. In this study, port inspection manual for pier type structure are developed. The flow of inspection program is designed and defect type for each component of wharf is classified. Also systematic method of rating and evaluation is developed together with conceptual design of port maintenance data base system.

• Proceedings of the KSR Conference
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• 1998.05a
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• pp.233-240
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• 1998

In the design of the high-speed railway vehicles of low noise and vibration characteristics, it is desirable to develop efficient and systematic procedures for analyzing large structures. In this paper, some finite-element modelling techniques and an efficient analytical method are proposed for this purpose. The analytical method is based on substructuring approach such as a free-interface method and a generalized synthesis algorithm. In final, the proposed approaches are applied to the finite-element modelling, modal analysis and subsequent model updating procedures of the high-speed railway intermediate trailers.

• Proceedings of the KSR Conference
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• 2002.10b
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• pp.995-1000
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• 2002

This paper presents general concept of DC switch gear(DCSWGR). Normally, DCSWGR consist of Digital protection unit(DPU), High Speed Circuit Breaker(HSCB), Disconnect Switch (DS), Programmable Logic Control(PLC), Auxiliary Relays and etc. Most of the components has its special characteristics and their interface between each others are various and complex. In this paper every constituent general design are preceded and interface between each component are examined. And also DCSWGR operation logic with logical diagram including interlock signal are introduced.

• Proceedings of the Korea Association of Information Systems Conference
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• 2004.11a
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• pp.29-36
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• 2004

많은 기능을 수행하는 네트워크 프로그램은 그 기능 만큼의 명령어들과 명령어 인자들을 주고 받게 되다. 수신된 명령어에 대한 처리는 $"IF\~ELSE"$ 같은 순차적인 비교구문을 사용하거나 자바 RMI같은 원격 메소드 호출방식을 사용하고 있다. 그러나 많은 명령어들을 매번 순차적인 방식으로 비교하는 것과 원격 메소드를 설계하는 방식은 그 구현 및 유지보수에 많은 어려움을 유발하고 있다. 본 논문의 목적은 명령어 수신부와 실행부에 대한 컴포넌트를 개발하여 프로그램 개발 및 유지보수에 들어가는 노력을 줄이고 프로그램의 수행성능을 향상시키기 위한 컴포넌트 개발에 있다.