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RFID 리더를 위한 중재 알고리즘의 모델링 및 시뮬레이션
류원상 ( Won Sang Ryu ),안시영 ( Si Young Ahn ),김용택 ( Yong Taek Kim ),배성우 ( Sung Woo Bae ),송의석 ( Eui Seok Song ),정명섭 ( Myoung Sub Jeong ),성영락 ( Yeong Rak Seong ),오하령 ( Ha Ryoung Oh ),박준석 ( Jun Seok Park ) 한국정보처리학회 2007 한국정보처리학회 학술대회논문집 Vol.14 No.2
RFID (Radio Frequency IDentification) 리더의 동작 영역은 리더의 감도와 전력이 도달할 수 있는 거리에 의해 제한된다. RFID Shower 는 근접한 리더로부터 전송되는 신호를 증폭하여 리더의 동작 영역을 확장한다. 그러나, RFID Shower의 동작 영역 안에 여러 리더들이 있을 경우 리더들간의 신호충돌이 발생한다. 이를 해결하기 위해 중재 알고리즘이 제안되었다. 본 논문에서는 RFID 리더들을 위한 중재 알고리즘을 DEVS 형식론에 기반하여 모델링하고 시뮬레이션 하여 성능을 측정, 비교하였다.
동해구중형트롤어업의 어구어법 및 제도 개선에 관한 연구
장충식 ( Choong Sik Jang ),송원상 ( Won Sang Song ),강명희 ( Myoung Hee Kang ),조윤형 ( Youn Hyoung Cho ),김보연 ( Bo Yeon Kim ),안영수 ( Young Su An ) 한국어업기술학회 2016 수산해양기술연구 Vol.52 No.2
This study attempted to help determine Korean fishery policies by proposing improvement plans after examining the current regulations, fishing vessels, fishing gear and fishing methods of the middle sized trawl fishery in the East Sea for targeting only squid. In general, the size, engine horse power, and net length of the middle sized trawlers are between 50 and 60 GT, 1,200 and 1,600 PS, and approximately 165 m with four seamed trawl nets, respectively. While a jigging vessel attracted squids using lights, the trawler approached a jigging vessel. The trawler let the jigging vessel know its decision for fishing, and then jigging vessel rolled up jigs. The net of the trawler was casted at 45 degrees between the bow and the stern of the jigging vessel. Once the trawler towed close to the stern of the jigging vessel upon its passing of the jigging vessel, the bow of the trawler turned 45 degrees left again. Then, squid aggregations were entered into the net. When the cod end was passed a light vessel, the trawler hoisted the net up to the otter board. Then the trawler turned 180 degrees. It repeated three to five times of fishing operations as the previous method. We recommend that the regulations allow nineteen side trawlers to catch like stern trawler, as well as the cooperative trawler and jigging vessel operations.