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65篇 您的检索式:作者名="Zhensen"
    题名 作者 年代 出处 被引量
1刚性钢框架梁柱连接试验研究显示文摘为了检验刚性钢框架梁柱连接的抗震性能,对六个大尺寸的连接试件进行了循环加载试验,试验过程中在柱端施加了轴向压力。试验中,刚性连接试件在循环荷载作用下没有表现出足够的延性。试验结果表明:全焊梁柱连接的滞回性能好于栓焊连接;较弱节点板的梁柱连接能产生较大的塑性变形;翼缘对接焊缝的质量对梁柱刚性连接的滞回性能有很大影响。根据试验结果提出了设计施工建议。宋振森 顾强 郭兵 SONG Zhensen GU Qiang GUO Bing 2001建筑结构学报2001,22,1:44
2Temperature enhancement induced by ionosphere heating in low altitude region显示文摘电子温度近似等于离子温度的假设不在在低电离层区域加热的高频率(HF ) 期间是合理的。因此,使用理论公式支离破碎与 collisional 血浆散布系列,支离破碎散布数据在电离层在 91.7 km 高度加热期间被分析在 2006 年 8 月 15 日。电子温度的改进被获得,并且增长百分比分别地在 10:22 和 10:30 的通用时间直到 37% 和 46% 。由使用一样的初始化值,加热进程的电离层被欧姆的理论模仿,试验性的结果与模拟基本上一致。Bin Xu Jian Wu Zhensen Wu Jun Wu Haiqin Che Yubo Yan Kun Xue 2008Progress in Natural Science:Materials International2008,18,11:7
30.75 Gbit/s high-speed classical key distribution with mode-shift keying chaos synchronization of Fabry–Perot lasers显示文摘High-speed physical key distribution is diligently pursued for secure communication.In this paper,we propose and experimentally demonstrate a scheme of high-speed key distribution using mode-shift keying chaos synchronization between two multi-longitudinal-mode Fabry–Perot lasers commonly driven by a super-luminescent diode.Legitimate users dynamically select one of the longitudinal modes according to private control codes to achieve mode-shift keying chaos synchronization.The two remote chaotic light waveforms are quantized to generate two raw random bit streams,and then those bits corresponding to chaos synchronization are sifted as shared keys by comparing the control codes.In this method,the transition time,i.e.,the chaos synchronization recovery time is determined by the rising time of the control codes rather than the laser transition response time,so the key distribution rate is improved greatly.Our experiment achieved a 0.75-Gbit/s key distribution rate with a bit error rate of 3.8×10^(−3)over 160-km fiber transmission with dispersion compensation.The entropy rate of the laser chaos is evaluated as 16 Gbit/s,which determines the ultimate final key rate together with the key generation ratio.It is therefore believed that the method pays a way for Gbit/s physical key distribution.Hua Gao Anbang Wang Longsheng Wang Zhiwei Jia Yuanyuan Guo Zhensen Gao Lianshan Yan Yuwen Qin Yuncai Wang 2021Light(Science & Applications)2021,10,9:7
4Incoherent scatter spectra from plasma of a 13-moment approximation distribution function显示文摘The function and physical mechanism of heat flow and the viscous stress in the velocity distribution function expanded by Maxwellian distribution are presented. With the introduction of effective temperature Tf, incoherent scatter spectra from plasma for electromagnetic wave in arbitrary line of sight are given. The effect of asymmetry and anisotropy provided by heat flow and the viscous stress on power spectra is discussed. Radar spectra are calculated for different cases of electric field, direction, collision frequency and temperature. The effect of heat flow and the viscous stress on inversion results is analyzed. With a large electric field, the character of non-Maxwellian must be considered.XU Bin XUE Kun WU Jian WU ZhenSen 2008Science China(Technological Sciences)2008,51,5:4
5Abnormal perturbations in the ionospheric F2 region before Wenchuan earthquake on 12 May 2008显示文摘On 12 May 2008 at 14:28 BJT, a great earthquake (M=8.0) occurred in Wenchuan (31.00°N, 103.40°E), China. The hourly foF2 from 5 to 12 May have been analyzed over four ionospheric observatories: Kunming (25.00°N, 102.70°E), Chongqing (29.50°N, 106.40°E), Lhasa (29.63°N, 91.17°E), and Lanzhou (36.07°N, 103.87°E). The results show that foF2 were notably abnormal from upper bound (the maximum abnormality up to 65% at 17:00 BJT) and lasted about 3 h on 9 May over Chongqing station. Moreover, there were obvious perturbations of foF2 on the same day over other stations except Lhasa. Taking into account that the solar activity and geomagnetic activity were very quiet during this period, we can conclude that the observed positive ionospheric perturbations were likely associated with the imminent earthquake.Xu Tong Hu YanLi Wu Jian Wu ZhenSen Suo YuCheng Feng Jian Huang ChaoJun 2010Science China Earth Sciences2010,53,11:4
6Electromagnetic Scattering from One-Dimension Fractal Surface显示文摘In this paper,the surfaces are modeled by multiscaled band-limited continuous fractal function and fractional Brownian motion function.The relationship between the scattering behavior and geometrical characteristics of the fractal surface is analysed in detail based on the perturbation solution and Kirchhoff approximation.Finally,some discussions are given about scattering from fractal surface.GUO Lixin WU Zhensen 1994Chinese Physics Letters1994,11,5:3
7Incoherent scatter spectra due to HF heating in the low ionosphere region显示文摘The electron velocity distribution function and the incoherent scatter spectra during ionospheric heating in low ionosphere region are presented with consideration of the elastic collision between electrons and neural particles and the excitation of rotation energy level. The effects of pump frequency and electric fields on the spectra are discussed. With the increase of electric field, the non-Maxwellian feature is enhanced, and with the increase of heating frequency, the non-Maxwellian feature is weak- ened. The non-Maxwellian factor will bring a large error in ionosphere parameters, which must be con- sidered in the inversion.XU Bin WU ZhenSen WU Jian XUE Kun 2009Science China(Technological Sciences)2009,52,4:2
8Simultaneous optical and radar observations of poleward moving auroral forms under different IMF conditions显示文摘Using high temporal resolution optical data obtained from three-wavelength all-sky imagers at Chinese Yellow River Station in the Arctic, together with the EISCAT Svalbard radar (ESR) and SuperDARN radars, we investigated the dayside poleward moving auroral forms (PMAFs) and the associated plasma features in the polar ionosphere under different interplanetary magnetic field (IMF) conditions, between 0900 and 1010 UT on 22 December 2003. Simultaneous optical and ESR observations revealed that all PMAFs were clearly associated with pulsed particle precipitations. During northward IMF, particles can precipitate into lower altitudes and reach the ionospheric E-region, and there is a reverse convection cell associated with these PMAFs. This cell is one of the typical signatures of the dayside high-latitude (lobe) reconnection in the polar ionosphere. These results indicate that the PMAFs were associated with the high-latitude reconnection. During southward IMF, the PMAFs show larger latitudinal motion, indicating a longer mean lifetime, and the associated ionospheric features indicate that the PMAFs were generated by the dayside low-latitude reconnection.XING Zanyang YANG Huigen HAN Desheng WU Zhensen LIU Junming HU Zejun ZHANG Qinghe LIU Yonghua ZHANG Beichen HU Hongqiao 2012Advances in Polar Science2012,23,4:2
9Dayside poleward moving auroral forms and ionospheric convection under stable interplanetary magnetic field (IMF) conditions显示文摘Using high temporal resolution optical data obtained from three-wavelength all-sky imagers over six winters continuously at Yellow River Station (78.92°N,11.93°E) in Arctic,we statistically investigated the dependence of location of poleward moving auroral forms (PMAFs) on the interplanetary magnetic field (IMF) B z and B y components as a function of MLT and MLAT under stable IMF conditions.It is found that more PMAFs occurred in lower latitude for Bz<0 and there was less evident IMF B y-related prenoon-postnoon asymmetry for Bz<0 than for Bz>0.We found that the PMAFs were distributed over a wide range of MLT when Bz<0,which indicates that the reconnection X-line might spread like an 'S' shape.However,during northward IMF,PMAFs were observed predominantly prenoon for IMF By>0 and postnoon for IMF By<0 associating with the effect of the high-latitude reconnection,which is largely consistent with the theoretical model of the convection flow.XING ZanYang YANG HuiGen HAN DeSheng WU ZhenSen LIU JunMing HU ZeJun ZHANG QingHe HU HongQiao LIU YongHua 2013Science China(Technological Sciences)2013,56,4:2
10Bi-static scattering by arbitrarily shaped objects with rough surface at optical and infrared frequencies显示文摘Wu Zhensen Cui Suomin 1992Int J infr Mill Waves1992,13,4:1
11Statistical temporal behavior of pulse wave propagation through continuous random media显示文摘Zhengwen Xu Jian Wu Zhensen Wu 2003Waves Random Media2003,13,1:1
12The Fast EPILE Combined with FBM for Electromagnetic Scattering from Dielectric Targets above and below the Dielectric Rough Surface显示文摘Liang Yu Guo Lixin Wu Zhensen 2011IEEE Transactions on Geoscience and Re- mote Sensing2011,4910,:1
13Modeling low elevation GPS signal propagation in maritime atmospheric ducts 显示文摘ZHANG Jinpeng WU Zhensen WANG Bo 2012Journal of Atmos- pheric and Solar-Terrestrial Physics2012,,80:1
14Rainbow scattering by an inhomogeneous cylinder with an off-axis Gaussian beam incidence at normal 显示文摘G Lixin W Zhensen 2000IR and Mill Waves2000,21,12:1
15Improved composite surface model for two-dimensional ocean surface scattering显示文摘WU Zhensen ZHANG Yandong GUO Lixin 2000Remote Sensing of the Ocean and Sea Ice2000,4172,:1
16Light scattering and visibility condition of spatial objects 显示文摘WU Zhensen LI Daoyong ZHANG Yanqun 2004International Journal of Infrared and Millimeter Waves2004,25,8:1
17Influence of highspeed dielectric spherical particles movement on its scattering characteristics 显示文摘WANG Mingjun WU Zhensen LI Yingle 2007Chinese Optics Letters2007,5,4:1
18Scattering of solar and atmospheric background radiation from a target 显示文摘WU Zhensen LIU Anan 2002International Journal of Infrared and Millimeter Waves2002,23,6:1
19A study of optical scintillation in the atmospheric turbulence by using modification modification of the Ryzov method显示文摘GUO Lixin LUO Zhimin WU Zhensen 2001China of Electronic2001,10,3:1
20Fractal model and electromagneticscattering from time-varying sea surface 显示文摘Guo Lixin Wu Zhensen 2000ElectronicsLetters2000,36,21:1
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