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모델기반 신경망 제어기를 이용한 열린 박스 구조물의 진동제어
장승익(Seung Ik Jang),신윤덕(Yun De Shen),기창두(Chang Doo Kee) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
Vibration causes noise and sometimes makes structure unstable. Especially, due to the efforts of lightening,<br/> deformation of flexible structure is increased in its shape. Just a little disturbance can cause vibration and low<br/> damping ratio makes residual vibration last long time. This research is concerned with the model reference<br/> neuro-controller design for the vibration suppression of smart structures. By using a model reference neurocontroller,<br/> which is one of the algorithms of adaptive control, we performed an adaptive control of flexible<br/> cantilever plate and opened box structure with piezoelectric materials. The proposed adaptive vibration<br/> control algorithm, a model reference neuro-controller, was proved in its effectiveness by applying to an<br/> opened box structure. The model reference neuro-controller is implemented with DSP, and the real-time<br/> adaptive vibration control experiment results confirm that the model reference neuro-controller is reliable.
국내 사육 꿩에서 분리된 뉴켓슬병 바이러스의 hemagglutinin-neuraminidase(HN) 유전자의 클론닝과 염기서열 분석
장경수 ( Kyung Soo Chang ),곽길한 ( Kil Han Kwak ),장승익 ( Seung Ik Jang ),김지영 ( Ji Young Kim ),김태용 ( Tae Yong Kim ),송영환 ( Young Hwan Song ),송희종 ( Hee Jong Song ),전무형 ( Moo Hyung Jun ) 한국가축위생학회 2002 韓國家畜衛生學會誌 Vol.25 No.3
The gene encoding the HN protein from the CBP-1 strain, a heat stable Newcastle disease virus (NDV) isolated from diseased pheasants in Korea, was characterized by reverse transcriptasepolymerase chain reaction(RT-PCR) and the nucleotide and amino acid sequences were analyzed following cloning of the HN gene. In all of the NDV strains studied, a 1.75 kb size cDNA fragment for the HN gene was generated by RT-PCR and smaller specific band sizes harboring the internal portions of the HN gene were also detected by using four pars of primers. The RT-PCR was sensitive enough to detect viral transcripts when the virus titer was above 25 hemagglutination units. The amplified 1.75 kb cDNA was cloned into a BcamHI site of the pVL1393 Baculo transfer vector. The nucleotide sequences of the 1,758 bp HN gene from the CBP-1 strain were determined by the dye terminator cyclic sequencing method. The gene sequences were compared among the strains of CBP-1, Texas GB, Beaudette C, LaSota, Bl and Ulster. The homology of the CBP-1 HN gene to other HN variants was 97.8% to Texas GB, 98.4% to Beaudette C, 95.4% to LaSota, 95.6% to 131 and 90.2% to Ulster. As the deduced 577 amino acid sequences were compared among the strains, the homology for CBP-1 HN appeared to be 96.7% to Texas GB, 97.9% to Beaudette C, 95.5% to LaSota, 95.5% to BI and 92.7% to Ulster. It was evident that the amino acid sequences included 5 sites for N-asparagine linked glycosylation and 12 cysteine residues. The three conserved leucine residues within the predicted transmembrane domain of the HN protein are amino acid 30, 37 and 44. The three antigenic sites on the HN protein of NDV are amino acids 347 (Glu), 481 (Asn) and 495 (Glu). These data indicate that the genotype of the CBP-1 strain is more closely associated with the strains of Texas GB and Beaudette C than it is for the LaSota, BI and Ulster strains.