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Chinese Physics C 2018年第10期42卷 25-30页

作者： chengdong han Qiang Fu Xurong Chen Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049Chin Lanzhou University Lanzhou 730000China

A new method to test the valence quark distribution of nucleons obtained from the maximum entropy method using the Gottfried sum rule by performing the DGLAP equations with GLR-MQ-ZRS corrections and the original leading-order/next-to-leading-order （LO/NLO） DGLAP equations is outlined. The test relies on knowledge of the unpolarized electron proton structure function F2^ep and the electron neutron structure function F2^en and the assumption that Bjorken scaling is satisfied. In this work, the original Gottfried summation value obtained by the integrals of the structure function at different Q2 is in accordance with the theoretical value of 1/3 under the premise of light-quark flavor symmetry of the nucleon sea, whether it results from dynamical evolution equations or from global quantum chromodynamics fits of PDFs. Finally, we present the summation value of the LO/NLO DGLAP global fits of PDFs under the premise of light-quark flavor asymmetry of the nucleon sea. According to analysis of the original Gottfried summation value with two evolution equations at different Q2 we find that the valence quark distributions of nucleons obtained by using the maximum entropy method are effective and reliable.

关键词： Gottfired sum rule DGLAP-GLR-MQ-ZRS equations DGLAP equations deviation

Tackling the kaon structure function at EicC

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Chinese Physics C 2022年第6期46卷 192-202页

作者： Gang Xie chengdong han Rong Wang Xurong Chen Guangdong Provincial Key Laboratory of Nuclear Science Institute of Quantum MatterSouth China Normal UniversityGuangzhou 510006China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China

Measuring the kaon structure beyond proton and pion structures is a prominent topic in hadron physics,as it is one way to understand the nature of the Nambu-Goldstone boson of QCD and observe the interplay between the EHM and HB mechanisms for hadron mass *** this study,we present a simulation of the leading A baryon tagged deep inelastic scattering experiment at EicC(Electron-ion collider in China),which is engaged to unveil the internal structure of kaon via the Sullivan *** to our simulation results,the suggested experiment will cover the kinematical domain of 0.05≤xK≤0.85 and Q^(2)up to 50 GeV^(2),with the acceptable statistical *** the relatively low-Q^(2) region(<10 GeV^(2)),the Monte-Carlo simulation shows a good statistical precision(<5%)for the measurement of the kaon structure function *** the high-Q^(2) region(up to 50 GeV^(2)),the statistical uncertainty of F_(2)^(K) is also acceptable(<10%)for the data at xK<*** perform such an experiment at an electron-ion collider,a high-performance zero-degree calorimeter is *** magnitude of the background process and the assumed detector capabilities are also discussed and illustrated in the paper.

关键词： kaon structure function electron-ion collider parton distribution function tagged deep inelastic scattering

Study of Polarized Parton Distribution Functions with Nonlinear QCD Evolution Equations

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IMP & HIRFL Annual Report 2022年第1期 21-22页

作者： han chengdong Xie Gang Wang Rong Chen Xurong Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Guangdong Provincial Key Laboratory of Nuclear Science Institute of Quantum MatterSouth China Normal UniversityGuangzhou 510006China

In the framework of dynamical parton distribution model,we obtain the polarized parton distribution functions from a QCD global analysis of the worldwide polarized deep inelastic scattering *** the analysis,we apply the DGLAP equations with parton-parton recombination *** the sea quarks and gluons are dynamically generated from QCD radiations processes,with the nonperturbative input comprising only the polarized valence quark distributions.

关键词： polarized quark QCD

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浅谈真空断路器机械参数的选择和调试

电工技术 2010年第1期 21-22,25页

作者：韩承栋爱迪生电气研发(上海)有限公司上海201201

总结真空断路器试验和调试的经验,分析真空断路器机械特性参数的选择原则和经验数据。

关键词：真空断路器机械特性参数调试

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牛病特点及常见病防治

畜牧兽医科学（电子版） 2022年第14期 80-81,84页

作者：韩成栋山东省兰陵县车辋畜牧兽医服务站山东临沂277716

如果牛感染疾病,不仅生长速度缓慢,产量和质量直接受到影响,使用药物控制疾病过程中,还易在肉产品中形成药物残留,带来食品安全问题。因此,做好牛疾病防控工作至关重要。该文将牛病特点及常见疾病的防治技术进行综述,希望给养殖人员有... 详细信息

如果牛感染疾病,不仅生长速度缓慢,产量和质量直接受到影响,使用药物控制疾病过程中,还易在肉产品中形成药物残留,带来食品安全问题。因此,做好牛疾病防控工作至关重要。该文将牛病特点及常见疾病的防治技术进行综述,希望给养殖人员有所参考。

关键词：牛病发病特点常见病防治

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闪烁体探测器中光的衰减通式（英文）

原子核物理评论 2019年第1期36卷 78-84页

作者：蓝江山赵凤仪丁萌韩成栋张亚鹏陈旭荣中国科学院近代物理研究所兰州730000 中国科学院大学核科学与技术学院北京100049

闪烁体探测器被广泛应用于当今粒子物理与原子核物理实验中。研究闪烁探测器的光衰减规律(LASD)对时间和能量的准确测量都十分重要,这一点对条形闪烁探测器尤为如此。本文以圆柱闪烁探测器为例,对各向同性的闪烁光进行立体角积分,进而... 详细信息

闪烁体探测器被广泛应用于当今粒子物理与原子核物理实验中。研究闪烁探测器的光衰减规律(LASD)对时间和能量的准确测量都十分重要,这一点对条形闪烁探测器尤为如此。本文以圆柱闪烁探测器为例,对各向同性的闪烁光进行立体角积分,进而研究不同立体角下光程差异对结果的影响。在数值计算的基础上,导出了描述LASD的通用公式。在一定条件下,公式可以约化为双指数衰减形式。对于DAMPE上PSD的实验数据,该公式能使闪烁体远端的拟合偏差从大约10%降低至2%以下。同时,模型也能够很好地描述Kaiser实验、Gierlik实验和Platino实验的实验数据。

关键词：闪烁探测器光衰减

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超氚核寿命之谜及其展望（英文）

原子核物理评论 2019年第3期36卷 273-277页

作者：韩成栋陈旭荣袁小华张红强张鹏鸣张亚鹏马越日本理化学研究所日本和光351-0198 中国科学院近代物理研究所兰州730000 中国科学院大学核科学与技术学院北京100049 兰州大学核科学与技术学院兰州730000

近期,基于重离子碰撞的实验组(HypHI,STAR)发表了超氚核(hypertriton)的寿命测量结果。其结果显示,超氚核的寿命比Λ超子短~30%。由于超氚核是一个非常松散的结合态,超氚核的寿命不应远离Λ超子的寿命太多。这一难以解释的现象被称为超... 详细信息

近期,基于重离子碰撞的实验组(HypHI,STAR)发表了超氚核(hypertriton)的寿命测量结果。其结果显示,超氚核的寿命比Λ超子短~30%。由于超氚核是一个非常松散的结合态,超氚核的寿命不应远离Λ超子的寿命太多。这一难以解释的现象被称为超氚核的短寿命之谜。为了从不同的实验方法检验超氚核的寿命,我们提出利用J-PARC的K-束流,通过K^-+3He→Λ3H+π~0的反应道来测量超氚核寿命的实验。本文将回顾测量超氚核寿命的主要结果,并介绍目前实验方面的最新进展。本合作组提出的原创性实验方案不会受到径迹重建效率的影响,能够为验证超氚核的寿命提供重要的实验数据。

关键词：超核超氚核寿命切伦科夫量能器

A New LP-based Obstacle-avoided Model in Path Planning Problem

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A New LP-based Obstacle-avoided Model in Path Planning Probl...

Neural network equivalent model for highly efficient massive data classification

2009中国控制与决策会议

作者： Yang Liying~(1,2),Wu chengdong~3,han Jianda~1,Zhao Xingang~1 and NIE Yiyong~1 1.State Key Laboratory of Robotics,Shenyang Institute of Automation,CAS,Shenyang 110015 2.Graduate School,Chinese Academy of Sciences,Beijing 3.School of Information Science & Engineering,Northeast University,Shenyang 110004

＜正＞A new linear programming obstacle-avoided model is presented in target pursuit and obstacle-avoided *** obstacle-avoided model only has the linear program once for obstacle avoidance at one time *** collision forecasting domain of vehicle and obstacle is obtained,which can prevent the happening of collision between vehicle and *** the target pursuit problem,the dynamic equation of mass point with linear damping is taken as the state equation of vehicle’s motion."Expansible Target Size" is proposed to describe the pursuit process for target. The Linear programming method is used to model and solve the obstacle-avoided pursuit ***,simulation is given to show the efficiency of the method.

关键词： Path Planning Linear Programming Obstacle avoidance Collision predication

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Science China(Information Sciences) 2023年第3期66卷 287-288页

作者： Siquan YU Zhi han Yandong TANG chengdong WU School of Information Science and Engineering Northeastern University Institutes for Robotics and Intelligent Manufacturing Chinese Academy of Sciences State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Faculty of Robot Science and Engineering Northeastern University

Dear editor, Recently, neural networks(NNs) have been successfully applied to massive data classification tasks [1, 2]. However,there is an inconsistent problem in neural network structure and convergence [3]. On one hand, under the overparameterize assumption, it requires to design a complex network to guarantee the convergence [4].

关键词：

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高强铝合金叠层材料高温复合变形行为研究

特种铸造及有色合金 2018年第5期38卷 465-469页

作者：夏承东韩银娜李龙伍波陈志茹吴忠亮周德敬银邦金属复合材料股份有限公司技术研究院江苏省金属层状复合材料重点实验室

采用Gleeble-3500热模拟试验机通过压缩复合变形制备了705/706铝合金叠层材料,研究了705和706两种铝合金在温度为573~773K,应变速率为0.01~10s^(-1)条件下的流变行为,并建立了复合变形的应力-应变本构方程和加工图。结果表明,705和706... 详细信息

采用Gleeble-3500热模拟试验机通过压缩复合变形制备了705/706铝合金叠层材料,研究了705和706两种铝合金在温度为573~773K,应变速率为0.01~10s^(-1)条件下的流变行为,并建立了复合变形的应力-应变本构方程和加工图。结果表明,705和706铝合金在压缩复合变形过程中,其流变应力随着变形温度的升高而减小,随应变速率的增加而增大,流变应力达到峰值后曲线呈现稳态流变特征,具有正应变速率敏感性。复合变形的平均变形激活能为147.2kJ/mol,与单一的Al-7.0Zn-2.9Mg合金相比更容易发生塑性变形。不同应变量的加工图显示两种合金在高温压缩复合变形时安全区域主要存在于高温、中等应变量和低应变速率的条件下,较合适的加工条件是道次应变量为0.2~0.4,变形温度为723~748K,应变速率为0.1~0.01s^(-1)。

关键词： Al-Zn-Mg铝合金叠层材料复合变形本构方程加工图