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정해원 ( Jeong Hae-won ),정재훈 ( Jeong Jae-hoon ),윤정환 ( Yoon Jeong-hwan ),박승기 ( Park Seung-ki ) 한국농공학회 2005 한국농공학회 학술대회초록집 Vol.2005 No.-
This study was performed for the analysis of the variation characteristics on riverbed according to the arrangement of stream. It was monitored of the variation progress of riverbed dependent on the elapsed time after the arrangement and It was studied that the hydraulic adjustment of the riverbed caused by the variation of the riverbed. The large amount of deposit just after the construction in which the riverbed was arranged to natural form was come from the reduction of flow rate by the installed artificialities such as weirs and stone weirs and by the stones or the concrete blocks attached to the stream sides of riverbanks. This phenomenon was well consistent with the usual characteristics that the accumulation is induced on upper stream of hydraulic artificialities and the erosion is induced on down stream of hydraulic artificialities. The large reduction of the deposit 1 year later after the construction showed that the riverbed eroded considerably because of the recovery of flow amount and the rise of flow rate.
정해원,강훈,조성준,Jeong, Hae-Won,Gang, Hun,Jo, Seong-Jun 한국전자통신연구원 1997 전자통신동향분석 Vol.12 No.5
본 논문은 '96년 6월부터 ATM Forum에서 표준화가 진행되고 있는 무선 ATM에 대한 각 계층의 역할과 앞으로의 추진 방향 등에 대한 요약이다. 또한 표준화 작업을 위하여 기고된 기술 문서와 현재 국책사업으로 연구 개발 중인 ATM LAN을 토대로 하여 5 GHz 주파수대에서 25 Mbps 전송 속도로 운용되는 무선 ATM LAN에 대한 설계 예를 제시한다.