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Choi, Kyuha,Kim, Sanghee,Kim, Sang Yeol,Kim, Minsoo,Hyun, Youbong,Lee, Horim,Choe, Sunghwa,Kim, Sang-Gu,Michaels, Scott,Lee, Ilha American Society of Plant Physiologists 2005 The Plant cell Vol.17 No.10
<P>Flowering traits in winter annual Arabidopsis thaliana are conferred mainly by two genes, FRIGIDA (FRI) and FLOWERING LOCUS C (FLC). FLC acts as a flowering repressor and is regulated by multiple flowering pathways. We isolated an early-flowering mutant, suppressor of FRIGIDA3 (suf3), which also shows leaf serration, weak apical dominance, and infrequent conversion of the inflorescence shoot to a terminal flower. The suf3 mutation caused a decrease in the transcript level of FLC in both a FRI-containing line and autonomous pathway mutants. However, suf3 showed only a partial reduction of FLC transcript level, although it largely suppressed the late-flowering phenotype. In addition, the suf3 mutation caused acceleration of flowering in both 35S-FLC and a flc null mutant, indicating that SUF3 regulates additional factor(s) for the repression of flowering. SUF3 is highly expressed in the shoot apex, but the expression is not regulated by FRI, autonomous pathway genes, or vernalization. SUF3 encodes the nuclear ACTIN-RELATED PROTEIN6 (ARP6), the homolog of which in yeast is a component of an ATP-dependent chromatin-remodeling SWR1 complex. Our analyses showed that SUF3 regulates FLC expression independent of vernalization, FRI, and an autonomous pathway gene, all of which affect the histone modification of FLC chromatin. Subcellular localization using a green fluorescent protein fusion showed that Arabidopsis ARP6 is located at distinct regions of the nuclear periphery.</P>
듀얼 모드 하이브리드 자동차의 모드 변환시 토크 변화 저감을 위한 제어 알고리즘에 대한 연구
최월선(Woulsun Choi),강재영(Jaeyoung Kang),홍성화(Sunghwa Hong),김현수(Hyunsoo Kim) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
In this study, mode change characteristics of a dual mode power split type hybrid electric vehicle were investigated, and a control algorithm was proposed to minimize the torque variation of the output shaft during the mode change. To analyze the transient characteristics during mode change, dynamic models for the planetary gear, engine, motor-generator, battery and vehicle were established, and a performance simulator for the dual mode power split transmission hybrid electric vehicle was developed. The simulator was used for the mode changes : EV mode → input split mode, input split mode → compound split mode. In the control algorithm, the MG1 torque was controlled to minimize the torque variation of the output shaft for the mode change from the EV mode to the input split mode. For the mode change from the input split mode to the compound split mode, the engine was controlled by the motor torque together with the slip control of the clutch/brake to reduce the speed difference between both clutch side and thereby reduce the torque variation of the output shaft.