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“三位一体”助教实习全流程培养模式对理工科人才培养的作用

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物理与工程 2024年第2期34卷 73-80页

作者：吕智国陈列文钱冬李晟上海交通大学物理与天文学院上海200240

研究生助教团队作为课程教学中不可或缺的重要组成部分,在保障量大面广的基础课程教学质量上扮演着关键角色。如何系统地引导和培养新入学研究生胜任课程助教岗位,进而构建一支有力的教学支持梯队,是一项重要的教学实践研究课题。如何... 详细信息

研究生助教团队作为课程教学中不可或缺的重要组成部分,在保障量大面广的基础课程教学质量上扮演着关键角色。如何系统地引导和培养新入学研究生胜任课程助教岗位,进而构建一支有力的教学支持梯队,是一项重要的教学实践研究课题。如何全方位提升助教的教学能力、增强其教学责任感,并通过优化助教工作流程实现效能最大化,乃是保障高质量本科教学的关键要素。上海交通大学物理与天文学院通过构建“三位一体”助教教学实习模式,建立了学校-学院-任课教师三级协同培养实习方案,培养新入学研究生熟悉教育基本理念并熟练掌握助教工作基本技能,完成教学岗位准备;通过学院-任课教师联合指导,在实践中做到悉心指导研究生助教工作、督促研究生保质保量完成教学工作,以助教实习课程为依托形成每位助教完整的实习工作数据链;通过教学实践全过程对助教工作质量进行岗位考核评价。现已形成了完备的学校-学院-任课教师“三位一体”培养体系,建立了多方有效的沟通渠道和监督助教工作质量的反馈体系及助教评价方式。助教培养体系为本科生更好的学习大学物理提供了有效的保障,为大学物理教学保驾护航。该培养模式是在大学物理教学实践中顺势而生的新模式。通过该模式不仅可以提升大学物理教学质量,提高工科人才的物理学习效果,也给研究生助教自身发展提供了平台。

关键词：助教助教教学实习课研究生大学物理本科生学习效果

Mean-field effects on matter and antimatter elliptic flow

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Nuclear Science and Techniques 2013年第5期24卷 132-139页

作者： KO Cheming chen liewen GRECO Vincenzo LI Feng LIN Ziwei PLUMARI Salvatore SONG Taesoo XU Jun Cyclotron Institute and Department of Physics and Astronomy Texas A & M UniversityCollege Station Department of Physics Shanghai Jiao Tong University Dipartimento di Fisica e Astronomia Universitá di CataniaVia S.Sofia 64 Department of Physics East Carolina UniversityC-209 Howell Science ComplexGreenville Shanghai Institute of Applied Physics Chinese Academy of Sciences

We report our recent work on mean-field potential effects on the elliptic flows of matters and antimatters in heavy ion collisions leading to the production of a baryon-rich *** the framework of a multiphase transport(AMPT) model that includes both initial partonic and final hadronic interactions,we have found that including mean-field potentials in the hadronic phase leads to a splitting of the elliptic flows of particles and their antiparticles,providing thus a plausible explanation of the different elliptic flows between p and anti-p,K+and K-,and π+ and π- observed by the STAR Collaboration in the Beam Energy Scan(BES) program at the Relativistic Heavy Ion Collider(RHIC).Using a partonic transport model based on the Nambu-Jona-Lasinio(NJL) model,we have also studied the effect of scalar and vector mean fields on the elliptic flows of quarks and antiquarks in these *** quarks and antiquarks at hadronization to hadrons via the quark coalescence model,we have found that the elliptic flow differences between particles and antiparticles also depend on the strength of the quark vector coupling in baryon-rich quark-gluon plasma,providing thus the possibility of extracting information on the latter's properties from the BES program at RHIC.

关键词：椭圆流平均场反物质强子相互作用重离子碰撞重离子对撞机输运模型 RHIC

Neck Formation and Decay in Intermediate Energy HIC

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IMP & HIRFL Annual Report 1996年第1期 138-139页

作者： chen liewen Ge Lingxiao and Zhang Fengshou

ＮｅｃｋＦｏｒｍａｔｉｏｎａｎｄＤｅｃａｙｉｎＩｎｔｅｒｍｅｄｉａｔｅＥｎｅｒｇｙＨＩＣ￥ＣｈｅｎＬｉｅｗｅｎ；ＧｅＬｉｎｇｘｉａｏａｎｄＺｈａｎｇＦｅｎｇｓｈｏｕＩｎｒｅｃｅｎｔｙｅａｒｓ，ｐｅｏｐｌｅｆｏｕｎｄｔ... 详细信息

ＮｅｃｋＦｏｒｍａｔｉｏｎａｎｄＤｅｃａｙｉｎＩｎｔｅｒｍｅｄｉａｔｅＥｎｅｒｇｙＨＩＣ￥ＣｈｅｎＬｉｅｗｅｎ；ＧｅＬｉｎｇｘｉａｏａｎｄＺｈａｎｇＦｅｎｇｓｈｏｕＩｎｒｅｃｅｎｔｙｅａｒｓ，ｐｅｏｐｌｅｆｏｕｎｄｔｈａｔｔｈｅｓｈａｐｅｉｎｓｔａｂ...

关键词： Intermediate

Isospin Effects on Preequilibrium Nucleon Emission in HIC

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IMP & HIRFL Annual Report 1995年 110-111页

作者： chen liewen Zhang Xiaodong and Ge Lingxiao

Ｉｓｏｓｐｉｎ　Ｅｆｆｅｃｔｓ　ｏｎ　Ｐｒｅｅｑｕｉｌｉｂｒｉｕｍ　Ｎｕｃｌｅｏｎ　Ｅｍｉｓｓｉｏｎ　ｉｎ　ＨＩＣＩｓｏｓｐｉｎＥｆｆｅｃｔｓｏｎＰｒｅｅｑｕｉｌｉｂｒｉｕｍＮｕｃｌｅｏｎＥｍｉｓｓｉｏｎｉｎＨＩＣ￥...

Ｉｓｏｓｐｉｎ　Ｅｆｆｅｃｔｓ　ｏｎ　Ｐｒｅｅｑｕｉｌｉｂｒｉｕｍ　Ｎｕｃｌｅｏｎ　Ｅｍｉｓｓｉｏｎ　ｉｎ　ＨＩＣＩｓｏｓｐｉｎＥｆｆｅｃｔｓｏｎＰｒｅｅｑｕｉｌｉｂｒｉｕｍＮｕｃｌｅｏｎＥｍｉｓｓｉｏｎｉｎＨＩＣ￥ＣｈｅｎＬｉｅｗｅｎ；ＺｈａｎｇＸ...

关键词：

A phenomenological equation of state for isospin asymmetric nuclear matter

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Science China(Physics,Mechanics & Astronomy) 2009年第10期52卷 1494-1505页

作者： chen liewen1,2 1 Department of Physics,Shanghai Jiao Tong University,Shanghai 200240,China 2 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator,Lanzhou 730000,China Department of Physics Shanghai Jiao Tong University Shanghai China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator Lanzhou China

A phenomenological momentum-independent(MID) model is constructed to describe the equation of state(EOS) for isospin asymmetric nuclear matter,especially the density dependence of the nuclear symmetry energy Esym(ρ).This model can reasonably describe the general properties of the EOS for symmetric nuclear matter and the symmetry energy predicted by both the sophisticated isospin and momentum dependent MDI model and the Skyrme-Hartree-Fock *** find that there exists a nicely linear correlation between Ksym and L as well as between J0/K0 and K0,where L and Ksym represent,respectively,the slope and curvature parameters of the symmetry energy at the normal nuclear density ρ0,while K0 and J0 are,respectively,the incompressibility and the third-order derivative parameter of symmetric nuclear matter at ρ*** correlations together with the empirical constraints on K0,L and Esym(ρ0) lead to an estimation of -477 MeV Ksat,2 -241 MeV for the second-order isospin asymmetry expansion coefficient for the incompressibility of asymmetric nuclear matter at the saturation point.

关键词： equation of state of nuclear matter isospin the symmetry energy

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对称能研究进展(英文)

原子核物理评论 2014年第3期31卷 273-284页

作者：陈列文上海交通大学物理与天文系上海200240 兰州重离子加速器国家实验室原子核理论中心兰州730000

总结了目前基于分析地面实验室以及天文观测数据所得到的关于核物质对称能密度相关性的约束。结果表明,在核物质饱和密度ρ0处,关于对称能的大小Esym(ρ0)及其密度梯度参数L的不同具体约束强烈地依赖于不同的实验数据或理论方法。另一方... 详细信息

总结了目前基于分析地面实验室以及天文观测数据所得到的关于核物质对称能密度相关性的约束。结果表明,在核物质饱和密度ρ0处,关于对称能的大小Esym(ρ0)及其密度梯度参数L的不同具体约束强烈地依赖于不同的实验数据或理论方法。另一方面,所有存在的约束都和Esym(ρ0)=(32.5±2.5)MeV以及L=(55±25)MeV一致。如何确定核物质对称能的高密行为仍然是一个挑战。

关键词：对称能非对称核物质状态方程核反应核结构中子星

Higher order bulk characteristic parameters of asymmetric nuclear matter

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Science China(Physics,Mechanics & Astronomy) 2011年第S1期54卷 124-129页

作者： chen liewen1,2 1Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China 2Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China Department of Physics Shanghai Jiao Tong University Shanghai China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator Lanzhou China

The bulk parameters characterizing the energy of symmetric nuclear matter and the symmetry energy defined at normal nuclear density ρ0 provide important information on the equation of state (EOS) of isospin asymmetric nuclear matter. While significant progress has been made in determining some lower order bulk characteristic parameters, such as the energy E0(ρ0) and incompress ibility K0 of symmetric nuclear matter as well as the symmetry energy Esym(ρ0) and its slope parameter L, yet the higher order bulk characteristic parameters are still poorly known. Here, we analyze the correlations between the lower and higher order bulk char acteristic parameters within the framework of Skyrme Hartree-Fock energy density functional and then estimate the values of some higher order bulk characteristic parameters. In particular, we obtain J0 = (-355±95) MeV and I0 = (1473±680) MeV for the third order and fourth-order derivative parameters of symmetric nuclear matter at ρ0 and Ksym = (-100 ± 165) MeV, Jsym = (224 ± 385) MeV, Isym = (-1309 ± 2025) MeV for the curvature parameter, third-order and fourth-order derivative parameters of the symmetry energy at ρ0, using the empirical constraints on E0(ρ0), K0, Esym(ρ0), L, and the isoscalar and isovector nucleon effective masses. Furthermore, our results indicate that the three parameters E0(ρ0), K0, and J0 can reasonably characterize the EOS of symmetric nuclear matter up to 2ρ0 while the symmetry energy up to 2ρ0 can be well described by Esym(ρ0), L, and Ksym.

关键词： equations of state of nuclear matter forces in hadronic systems and effective interactions symmetry energy nuclear density functional theory and extensions asymmetric matter neutron matter

Isospin Equilibrium and Nonequilibrium in Intermediate Energy HIC

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IMP & HIRFL Annual Report 1996年第1期 139-140页

作者： chen liewen Ge Lingxiao Zhang Xiaodong and Zhang Fengshou

ＩｓｏｓｐｉｎＥｑｕｉｌｉｂｒｉｕｍａｎｄＮｏｎｅｑｕｉｌｉｂｒｉｕｍｉｎＩｎｔｅｒｍｅｄｉａｔｅＥｎｅｒｇｙＨＩＣ￥ＣｈｅｎＬｉｅｗｅｎ；ＧｅＬｉｎｇｘｉａｏ；ＺｈａｎｇＸｉａｏｄｏｎｇａｎｄＺｈａｎｇＦｅｎｇｓｈ... 详细信息

ＩｓｏｓｐｉｎＥｑｕｉｌｉｂｒｉｕｍａｎｄＮｏｎｅｑｕｉｌｉｂｒｉｕｍｉｎＩｎｔｅｒｍｅｄｉａｔｅＥｎｅｒｇｙＨＩＣ￥ＣｈｅｎＬｉｅｗｅｎ；ＧｅＬｉｎｇｘｉａｏ；ＺｈａｎｇＸｉａｏｄｏｎｇａｎｄＺｈａｎｇＦｅｎｇｓｈｏｕＲｅｃｅｎｔｌｙ，ｓｏｍｅｅｘ...

关键词： Intermediate

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密度和温度相关的对称能

高能物理与核物理 1999年第12期23卷 1197-1202页

作者：张丰收陈列文兰州重离子加速器国家实验室原子核理论研究中心兰州730000

利用Ｈａｒｔｒｅｅ－Ｆｏｃｋ理论，基于扩展的Ｓｋｙｒｍｅ有效相互作用，在抛物线近似下，解析地给出了零温度时对称能的密度相关形式．同时讨论了对称能的温度相关性，发现对称能随着温度的升高而减小，在温度较低时，对称能强度系... 详细信息

利用Ｈａｒｔｒｅｅ－Ｆｏｃｋ理论，基于扩展的Ｓｋｙｒｍｅ有效相互作用，在抛物线近似下，解析地给出了零温度时对称能的密度相关形式．同时讨论了对称能的温度相关性，发现对称能随着温度的升高而减小，在温度较低时，对称能强度系数与温度的关系能较好地符合抛物线规律．

关键词：对称能抛物线规律密度相关温度相关