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Vacuum Corrections for Nuclear matter in Weak Momentum Dependence of Self-Energy

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Chinese journal of nuclear physics 1994年第2期16卷 95-99页

作者： Wang, Zisheng ma, zhongyu Cai, Dunjiu China Inst of Atomic Energy Beijing China

-The contributions of vacuum fluctuations to energy density in a weak momen-tum dependence of self-energy are calculated in Walecka *** adjusting modelparameters and introducing momentum dependent form factors at meson-nucleonvertices to reproduce the empirical nuclear matter saturation properties,Hartree-Fockresults including vacuum effects at low to moderate densities are similar to those in therelativistic Hartree approximation.

关键词： Vacuum corrections Hartree-Fock approximation Saturation properties Effective nucleon mass Form factors

What kind of optical model potentials should be used for deuteron stripping reactions?

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Science China(Physics,Mechanics & Astronomy) 2020年第2期63卷 64-70页

作者： XiaoYan Yun DanYang Pang YiPing Xu Zhi Zhang RuiRui Xu zhongyu ma CenXi Yuan Yuan51School of Physics Beihang UniversityBeijing 100191China Beijing Key Laboratory of Advanced Nuclear materials and Physics Beihang UniversityBeijing 100191China China Nuclear Data Center China Institute of Atomic EnergyBeijing 102413China China Institute of Atomic Energy Beijing 102413China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China

This paper presents the results of a study that compares CTOM, a microscopic optical model potential(OMP), which is an optical model co-created by the China Nuclear Data Center & Tuebingen University, to CH89, which is a typical phenomenological *** respective OMPs were tested by applying them to the modelling of nucleon elastic scattering and(d,p) transfer reactions involving14C,36S, and58Ni targets at both low and relatively high energies. The results demonstrated that although both potentials successfully accounted for the angular distributions of both the elastic scattering and transfer cross sections, the absolute values of the transfer cross sections calculated using CTOM were approximately 25% larger than those calculated using CH89. This increased transfer cross sections allowed CTOM to produce single particle strength reduction factors for the three reactions that were consistent with those extracted from(e,e′p) reactions as well as with more recent(p,2p) and(p,pn) reactions. Notch tests suggested that nucleon elastic scattering and transfer reactions are sensitive to different regions of the OMP;accordingly,phenomenological OMPs, which are constrained only by elastic scattering cross sections, may not be sufficient for nucleon transfer reactions. Therefore, we suggest that microscopic OMPs, which reflect more theoretical considerations, should be preferred over phenomenological ones in calculations of direct nuclear reactions.

关键词： optical model potentials elastic scattering transfer reactions spectroscopic factors

Quasiparticle Effects in Quasielastic Electron Seattering

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Chinese Physics Letters 1991年第12期8卷 611-614页

作者： ma zhongyu FENG Dachun Institute of Atomic Energy Beijing 102413

The quasipcirticle effect on the nuclear response in the quasielastic electron scattering is studied in a phenomenological quasiparticle *** quasiparticle Hamiltonian which includes correlations has been introduced through a parameterization of the effective mass m*(r)/*** is found that the quasiparticle effective mass plays an important role on the nuclear response *** this model could give better agreement with experiments,the discrepancy in the longitudinal response *** to be eliminated.

关键词： functions particle quasi

Robustness-supported user association and small cell switching ON/OFF strategies in 5G mm-wave networks

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High Technology Letters 2020年第1期26卷 8-16页

作者： ma zhongyu Li Bo Yan Zhongjiang Yang mao School of Electronics and Information Northwestern Polytechnical UniversityXi'an 710129P.R.China School of Electronic Information Engineering Lanzhou Institute of TechnologyLanzhou 730050P.R.China

The problem of robustness-supported user association and small cell station(SCS) switching ON/OFF strategies in 5G millimeter wave(mm-wave) networks is investigated, where the robustness of access links is ensured and the number of active SCSs is minimized for the reduction of the aggregation power consumption. Firstly, the problem is formulated as an integer programming(IP) problem. Then the problem is proved as a NP-hard problem by means of the simplification into the minimum dominant set(MDS), which is a NP-hard problem and is intractable to be solved in polynomial time. Secondly, a greedy-idea-based heuristic algorithm(GIHA) is proposed under the consideration of the complexity of the original optimization problem. Finally, superiorities of GIHA are demonstrated with the extensive simulations in 60 GHz mm-wave ultra-dense network in terms of access robustness and aggregate power consumption.

关键词： millimeter wave(mm-wave) user allocation minimum dominating set robustness-supported

Building a Modern Economic System to Support High-Quality Development

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Qiu Shi 2018年第4期10卷 109-111页

作者： ma zhongyu State Information Center

Building a modern economic system is essential if China's economy is to transition from a phase of rapid growth to a stage of high-quality *** represents an urgent need to transform the growth model,optimize the econo... 详细信息

关键词： Modern Economic System Development

MICROSCOPIC RELATIVISTIC DESCRIPTION OF OPTICAL MODEL POTENTIAL

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Chinese Physics Letters 1987年第3期4卷 117-120页

作者： ma zhongyu ZHU Ping GU Yingqi ZHUO Yizhong Institute of Atomic Energy Beijing

The microscopic relativistic optical potentials in energy region of E<300MeV have been studied and *** effective Lagrangian density with tDo adjustable coupling constants(gσ,gω)is chosen by reproducing the bulk prop... 详细信息

The microscopic relativistic optical potentials in energy region of Ematter in the Dzrac-Hartree-Fock(DHF)***-is found that the optical potential calculated in this model zs-in good agreement with those obtained by phenomenological fitting up to the energy of 300MeV.

关键词： approximation. Hartree constants

LDformer:a parallel neural network model for long-term power forecasting

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Frontiers of Information Technology & Electronic Engineering 2023年第9期24卷 1287-1301页

作者： Ran TIAN Xinmei LI zhongyu ma Yanxing LIU Jingxia WANG Chu WANG College of Computer Science&Engineering Northwest Normal UniversityLanzhou 730070China

Accurate long-term power forecasting is important in the decision-making operation of the power grid and power consumption management of customers to ensure the power system’s reliable power supply and the grid economy’s reliable ***,most time-series forecasting models do not perform well in dealing with long-time-series prediction tasks with a large amount of *** address this challenge,we propose a parallel time-series prediction model called ***,we combine Informer with long short-term memory(LSTM)to obtain deep representation abilities in the time ***,we propose a parallel encoder module to improve the robustness of the model and combine convolutional layers with an attention mechanism to avoid value redundancy in the attention ***,we propose a probabilistic sparse(ProbSparse)self-attention mechanism combined with UniDrop to reduce the computational overhead and mitigate the risk of losing some key connections in the *** results on five datasets show that LDformer outperforms the state-of-the-art methods for most of the cases when handling the different long-time-series prediction tasks.

关键词： Long-term power forecasting Long short-term memory(LSTM) UniDrop Self-attention mechanism

Symmetry Energy and Isovector Giant Dipole Resonance in Finite Nuclei

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近代物理研究所和兰州重离子加速器实验室年报：英文版 2007年第1期 25-26页

作者： Cao Ligang ma zhongyu 不详 China Institute of Atomic Energy Beijing China.

Giant and Pygmy resonance in the relativistic approach

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Giant and Pygmy resonance in the relativistic approach