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Jae Man Kim(김재만),Yoon Ho Choi(최윤호),Jin Bae Park(박진배) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
In this paper, We present the wavelet neural network (WNN) controller as an active queue management(AQM) in end-to-end TCP network. AQM is important to regulate the queue length and short round trip time by passing or dropping the packets at the intermediate routers. As the role of AQM, the WNN controller adaptively controls the dropping probability of the TCP network and is trained by gradient-descent algorithm. We illustrate our result that WNN controller is superior to PI controller via simulations.
가솔린 직접 분사 기관에서 가변 밸브 타이밍 시스템에 의한 내부 유동 특성에 관한 수치 해석적 연구
김재만(Jae Man Kim),백두성(Doo Sung Baik),유승화(Seung Wha Yoo) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
This research on the characteristics of internal flow by variable valve timing system was simulated by a commercial Fluent code and an optimized shape of intake/exhaust port or valves was discussed. The simulation was made by various valve timings with respect to crank angles. Complicated flow was visualized inside a cylinder and this may provide fundamental data in designing lean burn engine in future.