• Title/Summary/Keyword: Young Chu

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Architecture and Design of PSTN-PSDN Interworking System (PSTN-PSDN 연동장치 구조 및 설계)

  • Shin, Young-Seok;Choi, Sung-Su;Chin, Byoung-Moon;Choi, Yang-Hee;Yim, Chu-Hwan
    • Proceedings of the KIEE Conference
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    • 1987.07b
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    • pp.911-915
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    • 1987

  • In this thesis, the architecture and design of IWS(Inter Working System) which interconnects two different networks (PSDN: Packet Switched Data Network, PSTN:Public Switched Telephone Network) are described. IWS provides interconnection services for the compatibility of communication between two networks. IWS consists of network interface protocols, protocol conversion facilities and management facilities.

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The design and implementation of LAPD protocol for ISDN Basic Access (ISDN Basic Access를 위한 LAPD 프로토콜의 설계 및 구현)

  • Han, Woon-Young;Suh, Chang-Jin;Chung, Hee-Chang;Yim, Chu-Hwan
    • Proceedings of the KIEE Conference
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    • 1987.07b
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    • pp.921-923
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    • 1987

  • This paper describes the design and implementation of LAPD protocol for ISDN Basic Access. In protocol design, Software module is divided according to function and interfaces between modules arc defined. After that, Software structure is defined. LAPD protocol is designed by state machine design technique and implemented by SDL.

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Synthesis of Ni nanopowder using pulsed power technology (펄스파워를 이용한 니켈 나노분말 제조)

  • Cho, Chu-Hyun;Ha, Yoon-Cheol;Kang, Chun-Gil;Kim, Young-Bae
    • Proceedings of the KIEE Conference
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    • 2008.07a
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    • pp.1303-1304
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    • 2008

  • Nickel wire of 0.2mm diameter and 50mm in length was exploded in ethanol for Ni nanopower synthesis. The waveform of discharge current shows that the process can be divided by ohmic heating phase and plasma state. The Ni nanopowder classified after synthesis has 100nm of mean diameter.

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