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Nucleon effective mass splitting and density-dependent symmetry energy effects on elliptic flow in heavy ion collisions at Elab= 0.09 ~ 1.5 GeV/nucleon

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Chinese Physics C 2020年第7期44卷 103-110页

作者： Luyao Tong Pengcheng Li Fupeng Li Yongjia Wang Qingfeng Li fanxin liu Department of Physics Zhejiang University of TechnologyHangzhou 310023China School of Science Huzhou UniversityHuzhou 313000China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China Institute of Modem Physics Chinese Academy of SciencesLanzhou 730000China

By incorporating an iso spin-dependent form of the momentum-dependent potential in the ultra-relativistic quantum molecular dynamics(UrQMD)model,we systematically investigate effects of the neutron-proton effective mass splitting m*n-p=m*n-m*p/m and the density-dependent nuclear symmetry energy Esym(ρ)on the elliptic flow v2 in197Au+197 Au collisions at beam energies from 0.09 to 1.5 GeV/*** is found that at higher beam energies(≥0.25 GeV/nucleon)with the approximately 75 MeV difference in slopes of the two different Esym(ρ),and the variation of m*n-p ranging from-0.03 to 0.03 at saturation density with isospin asymmetryδ=(ρn-ρp)/ρ-0.2,the Esym(ρ)has a stronger influence on the difference in v2 between neutrons and protons,i.e.,v2n-v2p,than m*n-p ***,at lower beam energies(≤0.25 GeV/nucleon),v2n-v2p is sensitive to both the Esym(ρ)and the m****,the influence of m*n-p on v2n-v2p is more evident with the parameters of this study when using the soft,rather than stiff,symmetry energy.

关键词： nuclear symmetry energy heavy ion collision elliptic flow

Research on Homestay Construction in Huanglongxian Tea Culture Village from the Perspective of Culture and Tourism Integration

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Journal of Landscape Research 2022年第4期14卷 69-71,76页

作者： liu Yatong liu fanxin YU Ziping Nanjing Xiaozhuang University NanjingJiangsu 211171China Jiangsu Vocational College of Agriculture and Forestry JurongJiangsu 212400China University of the Cordilleras BaguioBenguet 2600Philippines

Against the background of COVID-19 pandemic,tourists have had increasing demands on rural tourism,and characteristic homestay has won great *** tea culture homestay in Jiangning District,Nanjing City has been in the development *** analysis,questionnaire survey,interview and experience method were used to analyze the development status and tourist needs of Huanglongxian tea *** research showed that Huanglongxian tea homestay was confined by inconvenient traffic,serious homogeneity,singular experience projects,and unremarkable tea culture theme;The main tourists were the locals,particularly middle-aged and young groups of enterprises and public institutions with higher educational backgrounds,most of whom visited the village during holidays for relaxation and recreation,and the revisit rate was *** view of this,it was proposed that the integration of tea culture and homestay should be enhanced,more characteristic homestay products of tea culture developed,tea homestay market expanded,tea homestay brands built,so as to promote the development of tea homestay tourism.

关键词： Culture and tourism integration Homestay Tea culture Huanglongxian

基于PDF417条形码的读者证件系统的设计与实现

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现代图书情报技术 2007年第6期 83-86页

作者：刘凡馨西华大学图书馆成都610039

针对读者证件信息的公开性和证件的易磨损、易盗用,介绍PDF417条形码的组成及特点,设计并实现基于PDF417条形码的读者证件系统,以汇文系统读者数据库为例,提出对系统进行改进和补充的两种方式。

关键词： PDF417 编码解码读者证件

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喷码技术在图书馆的应用

图书情报工作 2005年第9期49卷 123-125页

作者：刘凡馨西华大学图书馆成都610039

介绍喷码技术的原理及其在其他行业的使用现状,分析喷码技术在图书馆使用的可行性,对图书馆采用喷码技术的优势及目前尚需解决的成本、兼容和数据修改等问题进行探讨。认为喷码技术在图书馆的使用能够带来简化工序、提高效率、降低错误... 详细信息

介绍喷码技术的原理及其在其他行业的使用现状,分析喷码技术在图书馆使用的可行性,对图书馆采用喷码技术的优势及目前尚需解决的成本、兼容和数据修改等问题进行探讨。认为喷码技术在图书馆的使用能够带来简化工序、提高效率、降低错误率、增加使用年限和提高纸质文献利用率等便利。

关键词：喷码技术条形码纸质文献图书馆

Space-and frequency-division multiplexing in photonic second-order topological insulators

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Photonics Research 2024年第10期12卷 2323-2333页

作者： GUANGXU SU RENWEN HUANG SHIYIN JIA JIANGLE HE ZHIXIN SONG JUNZHENG HU MINGHUI LU fanxin liu PENG ZHAN Department of Applied Physics Zhejiang University of TechnologyHangzhou 310023China National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China

Higher-order topological insulators,originally proposed in quantum condensed matters,have provided a new avenue for localizing and transmitting light in photonic *** band topology in crystals with certain symmetries can host robust topological edge states and lower dimensional topological corner states(TCS),making them a promising platform for photonics ***,we have designed several types of TCS with only two specific C6v-symmetric photonic crystals with various seamless splicing boundaries,where all the supposed TCS with diverse electromagnetic characteristics are visualized via numerical simulations and experimental *** interestingly,we have observed that those TCS overlapping in spectral and spatial space tend to interweaved,inducing spectrum ***,the equivalent corners appear to have TCS with a phase difference,which is critical for directional activation of pseudospin *** findings demonstrate that coupled TCS with phase difference at different nanocavities can be selectively excited by a chiral source,which indicates that the TCS at this time have pseudospin-dependent *** further design a specific splicing structure to prevent coupling between adjacent *** work provides a flexible approach for space-and frequency-division multiplexing in photonic devices.

关键词： properties topological insulator

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指纹技术及其在读者证件系统中的应用

现代图书情报技术 2007年第3期 83-86页

作者：刘凡馨西华大学图书馆成都610039

介绍指纹技术的原理及特点,设计和实现基于指纹技术的读者证件系统,对图书馆目前使用指纹技术尚需解决的成本问题、隐私问题、指纹采集和比对问题进行探讨。

关键词：指纹技术图书馆读者证件

Analysis of Consumer Behavior in the Context of the Digital Economy

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Asian Agricultural Research 2022年第11期14卷 11-14页

作者： Yanqiong PENG Fang FANG fanxin liu Wenjiao LU Kai GAO Dan liu Mingquan SHA Jiangsu Vocational College of Agriculture and Forestry Jurong 212400China

Under the condition that the digital economy model has penetrated into the consumption field,the consumer market environment is improving,the consumption structure is upgrading,the consumption content is diversified,and the consumer behavior is showing new epoch-making *** at the same time,there are also some problems,such as consumer privacy disclosure,and price discrimination based on consumer *** future development of consumer economy needs the joint efforts of the government,the market and consumers to establish a new cycle of the economic system from top to bottom.

关键词： Digital economy Consumption Path Consumer privacy

Dynamical Structure of A≤4 Hypernuclei and Charge Symmetry Breaking

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Chinese journal of nuclear physics 1994年第2期16卷 139-145页

作者： Luo Bin Kong fanxin liu Xianhui(Center of Theoretical Physics CCA ST( World Lab.),Beijing 100080)(Institute of High Energy Physics,Academia Sinica,Beijing 100039) Guangxi Teacher’s University,Guilin,541001. 中科院高能物理所北京 100039 中科院高能物理所北京

-The dynamical structure of A≤4 Λ-hypernuclei is studied by using thefew-body theoretical *** AN interaction is taken to be the meson exchange po-tential with the single k,ω,η exchange diagrams and the box diagrams of π and πρ ex-change containing the intermediate state particles Σ,Δ.The Λ binding energy differenceof the mirror hypernuclei _Λ~4He and _Λ~4H is *** is shown that the root meansquare distances between the particles in the light hypernuclei are almost the same andthere does not exist any nuclear *** relative motion between particles stay mainlyin 1S state.

关键词： Hypernuclei Few body Meson exchange

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图书延时及对应策略探析

情报探索 2007年第5期 114-115页

作者：刘凡馨西华大学图书馆四川成都610039

针对图书馆图书至流通状态的中间延时环节,分析延时原因及影响因素,比较图书延时程度,提出解决图书延时的方法,以期节约图书经费,提高图书利用率。

关键词：图书馆图书延时时效图书对应策略