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151.
在EAST中n=4的共振磁扰动下观察到明显的等离子体旋转制动效应,其分布具有全局性,且峰值靠近等离子体中心。利用模拟得到的新经典环向粘滞(NTV)力矩来反演等离子体环向角速度的变化,结果表明在大部分径向区域与实验测量的速度变化符合得较好,量值上相差约1~2倍。 相似文献
152.
本文根据置换群方法,运用C语言编制了计算程序,可快速、准确地推求等效组态s^N、p^N、d^N、f^N、…x^N、y^N、z^N的原子谱项。 相似文献
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Particle identification using artificial neural networks at BESⅢ 总被引:1,自引:0,他引:1
QIN Gang L Jun-Guang HE Kang-Lin BIAN Jian-Ming CAO Guo-Fu DENG Zi-Yan HE Miao HUANG Bin JI Xiao-Bin LI Gang LI Hai-Bo LI Wei-Dong LIU Chun-Xiu LIU Huai-Min MA Qiu-Mei MA Xiang MAO Ya-Jun MAO Ze-Pu MO Xiao-Hu QIU Jin-Fa SUN Sheng-Sen SUN Yong-Zhao WANG Ji-Ke WANG Liang-Liang WEN Shuo-Pin WU Ling-Hui XIE Yu-Guang YOU Zheng-Yun YANG Ming YU Guo-Wei YUAN Chang-Zheng YUAN Ye ZANG Shi-Lei ZHANG Chang-Chun ZHANG Jian-Yong ZHANG Ling ZHANG Xue-Yao ZHANG Yao ZHU Yong-Sheng ZOU Jia-Heng 《中国物理C(英文版)》2008,32(1)
A multilayered perceptrons' neural network technique has been applied in the particle identification at BESⅢ. The networks are trained in each sub-detector level. The NN output of sub-detectors can be sent to a sequential network or be constructed as PDFs for a likelihood. Good muon-ID, electron-ID and hadron-ID are obtained from the networks by using the simulated Monte Carlo samples. 相似文献
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JIA Lu-Kui MAO Ze-Pu LI Wei-Dong CAO Guo-Fu CAO Xue-Xiang DENG Zi-Yan HE Kang-Lin LIU Chun-Yan LIU Huai-Min LIU Qiu-Guang MA Qiu-Mei MA Xiang QIU Jin-Fa TIAN Hao-Lai WANG Ji-Ke WU Ling-Hui YUAN Ye ZANG Shi-Lei ZHANG Chang-Chun ZHANG Lei ZHANG Yao ZHU Kai ZOU Jia-Heng 《中国物理C(英文版)》2010,34(12)
In order to overcome the difficulty brought by the circling charged tracks with transverse momentum less than 120 MeV in the BESⅢ Main Drift Chamber(MDC),a specialized method called TCurlFinder was developed.This tracking method focuses on the charged track reconstruction under 120 MeV and possesses a special mechanism to reject background noise hits.The performance of the package has been carefully checked and tuned by both Monte Carlo data and real data.The study shows that this tracking method could obviously enhance the reconstruction efficiency in the low transverse momentum region,providing physics analysis with more and reliable data. 相似文献
159.
With adjustable amphiphilicity and anionic/cationic charge, biodegradability and biocompatibility, amino acid-based poly(ester amide)s(PEAs) have drawn attention in the research of tissue engineered vascular grafts. In this work, L-phenylalanine-based PEAs with or without L-lysine were synthesized through polycondensation, and ultrafine fibrous grafts consisted of PEAs and poly(ε-caprolactone)(PCL) in given mass ratios were further prepared via blend electrospinning. Surface characterizations by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy confirmed the chemical structure, and the wettability indicated that the prepared PCL/PEAs electrospun membranes exhibited less hydrophobic than PCL. Tensile results showed that the PCL/PEAs membranes possessed suitable mechanical properties, which could meet the requirements of artificial blood vessels. Cell culture and hemolytic tests exhibited that the PCL/PEAs electrospun membranes are biocompatible. In general, the electrospun grafts of PCL/PEAs could be applied for vascular repair. 相似文献
160.
We construct an exponential attractor for semigroup in Banach space by using ω-limit compactness method and provide a new method to prove the existence of an exponential attractor in uniformly convex Banach space. As a simple application, we prove the existence of an exponential attractor for reaction diffusion equations. 相似文献