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自传视野下的鲁迅《著者自叙传略》释读
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作者 王余鹃 《咸阳师范学院学报》 2024年第1期96-104,共9页
自传,是作者自叙生平的一种文类。作为鲁迅生前所唯一公开发表过的一篇自传文,无论是就其形式,抑或是就其内容而言,《著者自叙传略》都属于中国最为传统的“书序式自传”。然则,在这篇自传文之中,亦存在着很多“反自传”的地方。总体而... 自传,是作者自叙生平的一种文类。作为鲁迅生前所唯一公开发表过的一篇自传文,无论是就其形式,抑或是就其内容而言,《著者自叙传略》都属于中国最为传统的“书序式自传”。然则,在这篇自传文之中,亦存在着很多“反自传”的地方。总体而言,这种情况的出现,应主要源于鲁迅独特的自我身份定位——泯于众人的“我”。 展开更多
关键词 鲁迅 《著者自叙传略》 “反自传” 泯于众人的“我”
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Underwater vehicle sonar self-noise prediction based on genetic algorithms and neural network
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作者 WU Xiao-guang SHI Zhong-kun 《Journal of Marine Science and Application》 2006年第2期36-41,共6页
The factors that influence underwater vehicle sonar self-noise are analyzed, and genetic algorithms and a back propagation (BP) neural network are combined to predict underwater vehicle sonar self-noise. The experimen... The factors that influence underwater vehicle sonar self-noise are analyzed, and genetic algorithms and a back propagation (BP) neural network are combined to predict underwater vehicle sonar self-noise. The experimental results demonstrate that underwater vehicle sonar self-noise can be predicted accurately by a GA-BP neural network that is based on actual underwater vehicle sonar data. 展开更多
关键词 sonar self-noise back propagation (BP) neural network genetic algorithms
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Sliding Mode Control Approach for Electrically Controllable Clutch of AMT Based on the Feedback Linearization 被引量:1
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作者 程东升 张建武 +1 位作者 叶晓峰 黄维纲 《Journal of Donghua University(English Edition)》 EI CAS 2003年第3期88-93,共6页
A sliding mode control approach based on the feedback linearization is proposed for the electrically controllable clutch of AMT vehicles. The nonlinear dynamic model for the hydraulic actuator associated with clutch i... A sliding mode control approach based on the feedback linearization is proposed for the electrically controllable clutch of AMT vehicles. The nonlinear dynamic model for the hydraulic actuator associated with clutch is established. By means of the exact feedback linearization procedure of differential geometry, an equivalent, fully controllable and linear model is derived via a homomorphic transformation for the AMT clutch system.Furthermore, a sliding mode control is introduced to improve robustness. The tracking tests are performed using the sliding mode control on a Santana LX passenger car, and the experimental results prove that this nonlinear controller is of fine robustness and high degree of tracking accuracy. 展开更多
关键词 electrically controllable clutch exact feedback linearization sliding mode control ROBUSTNESS
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Determining Nuclear Form factor for Detection of Dark Matter in Relativistic Mean Field Theory
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作者 陈亚正 罗延安 +2 位作者 李磊 中虹 李学潜 《Communications in Theoretical Physics》 SCIE CAS CSCD 2011年第6期1059-1064,共6页
In this work, we derive the nuclear form factor for the spin-independent collision between the WIMPs and nucleus in terms of the relativistic mean field (RMF) theory. Comparison with the traditional form factors whi... In this work, we derive the nuclear form factor for the spin-independent collision between the WIMPs and nucleus in terms of the relativistic mean field (RMF) theory. Comparison with the traditional form factors which are commonly used in literature is given and it is found that our results are slightly above that of the 2PF model by 4% to 8%, but deviate from the Helm form factor by 15% to 25% for the whole recoil energy spectrum of 0 -100 keV. Moreover, taking Xe and Ge as examples, we show the dependence of the form Factor on the recoil energy. 展开更多
关键词 dark matter form factor relativistic mean field
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Theoretical study on boiling heat transfer in the Xi'an pulsed reactor 被引量:2
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作者 CHEN LiXin TANG XiaoBin +2 位作者 JIANG XinBiao CHEN Da ZHAO ZhuMin 《Science China(Technological Sciences)》 SCIE EI CAS 2013年第1期137-142,共6页
Boiling heat transfer condition has significance for pool-type research reactors cooled by natural circulation.It has important effect on the fuel element safety of reactor.On the basis of heat transfer characteristic... Boiling heat transfer condition has significance for pool-type research reactors cooled by natural circulation.It has important effect on the fuel element safety of reactor.On the basis of heat transfer characteristics of the Xi'an pulsed reactor(XAPR),fuel conduction,single-phase convection and boiling heat transfer,and void fraction models of the core are constructed.To validate the correctness of the physical models presented in the paper,numerical calculation based on a subchannel analysis method of XAPR is carried out,and the temperature fields are measured in some reactor coolant channels.The comparison between the calculated and experimental results verifies the effectiveness of the models.These physical models are used to calculate the thermal-hydraulic parameters of XAPR at the rated power(for XAPR the rated power is 2.0 MW in steady-state operation).The results indicate that subcooled boiling occurs in the XAPR core but it exhibits a subcooling degree which is considerably higher than that of saturation boiling.Subcooled boiling improves the efficiency of heat transfer between the fuel element surface and coolant,as well as effectively protects fuel elements.This research is also a beneficial reference in thermal-hydraulic analysis for other natural circulation reactors. 展开更多
关键词 pulsed reactor thermal-hydraulic analysis subcooled boiling heat transfer coefficient void fraction
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