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Formalism of Helicity Coupling Amplitudes for J/ψ→π^＋π^-π^0

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Communications in Theoretical Physics 2007年第1期47卷 89-94页

作者： PING Rong-gang LI gang WANG zheng Institute of High Energy Physics the Chinese Academy of Sciences Beijing 100049 China China Center for Advance Science and Technology （CCAST） Beijing 100080 China

The formalisms of helicity coupling amplitudes for J/ψ→π^＋π^-π^0 are presented. A detailed discussion is also given on the barrier factor, Breit Wigner, and density matrix. A Monte Carlo simulation of J/ψ→ρ（770）π→π^＋π^-π^0 is carried out. The results show that the p（770） resonance is well reproduced compared with experimental data.

关键词： helicity coupling amplitude J/ψ decays ρπ puzzle

Special Focus on Millimeter Wave Communications Techniques and Devices for 5G—Editorial

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Science China(Information Sciences) 2017年第8期60卷 5-6页

作者： Fu-Chun zheng gang WU Harbin Institute of Technology The University of York University of Electronic Science and Technology of China

Due to the rapid development of cost-effective CMOS solutions and recent experimental validation on communications over millimeter wave(mm Wave)bands,which span from 30 to 300 GHz,mm Wave communications technologies are being considered for 5G mobile systems to provide ultra-high data rates for front haul,back haul,and short or middle range broadband *** to the array gain of massive multiple-input multiple-output(m-MIMO)antenna arrays,the heavy path loss of mmWave

关键词： Wave for Editorial Special Focus on Millimeter Wave Communications Techniques and Devices for 5G MIMO on

A divergence-free weak Galerkin method for quasi-Newtonian Stokes flows

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Science China Mathematics 2017年第8期60卷 1515-1528页

作者： zheng XiaoBo CHEN gang XIE XiaoPing School of Mathematics Sichuan University

This paper proposes a weak Galerkin finite element method to solve incompressible quasi-Newtonian Stokes equations. We use piecewise polynomials of degrees k + 1(k 0) and k for the velocity and pressure in the interior of elements, respectively, and piecewise polynomials of degrees k and k + 1 for the boundary parts of the velocity and pressure, respectively. Wellposedness of the discrete scheme is established. The method yields a globally divergence-free velocity approximation. Optimal priori error estimates are derived for the velocity gradient and pressure approximations. Numerical results are provided to confirm the theoretical results.

关键词： quasi-Newtonian Stokes equation weak Galerkin method divergence-free optimal error estimate

Measurements of momentum correlation and interaction parameters between antiprotons

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Nuclear Science and Techniques 2016年第6期27卷 67-73页

作者： zheng-Qiao Zhang Yu-gang Ma Shanghai Institute of Applied Physics Chinese Academy ofSciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

The two-particle momentum correlation is influenced by the nuclear force between two particles,which has been intensively studied for nucleons and nuclei,but not much for antinucleons or *** this proceeding,we present our STAR measurements on momentum correlation function of antiproton-antiproton and proton-proton in Au+Au collisions at S_(NN)^(1/2)= 200 GeV at the Relativistic Heavy Ion *** nuclear force between two antiprotons is demonstrated,and the strong interaction parameters(the scattering length and the effective range) are *** measurement serves as an additional verification of CPT *** present information on the strong force in the antiproton-antiproton system provides a fundamental ingredient towards understanding the structure of more sophisticated antinuclei.

关键词：动量相关作用相互作用参数反质子测量重离子对撞机散射长度核力量金+金

Different genotypes regulate the microbial community structure in the soybean rhizosphere

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Journal of Integrative Agriculture 2023年第2期22卷 585-597页

作者： QU zheng LI yue-han XU Wei-hui CHEN Wen-jing HU Yun-long WANG Zhi-gang School of Life Science and Agriculture Forestry Qiqihar UniversityQiqihar 161006P.R.China Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization Qiqihar 161006P.R.China

The soybean rhizosphere has a specific microbial community,but the differences in microbial community structure between different soybean genotypes have not been *** present study analyzed the structure of the rhizosphere microbial community in three soybean *** in rhizosphere microbial communities between different soybean genotypes were verified using diversity testing and community composition,and each genotype had a specific rhizosphere microbial community ***-occurrence network analysis found that different genotype plant hosts had different rhizosphere microbial *** relationship between rhizobia and rhizosphere microorganisms in the network also exhibited significant differences between different genotype plant *** ecological function prediction found that different genotypes of soybean recruited the specific rhizosphere microbial *** results demonstrated that soybean genotype regulated rhizosphere microbial community structure *** study provides a reference and theoretical support for developing soybean microbial inoculum in the future.

关键词： soybean rhizosphere genotype microbial community host plants

Indoor Pedestrian Tracking with Sparse RSS Fingerprints

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Tsinghua Science and Technology 2018年第1期23卷 95-103页

作者： Qiuxia Chen Dongdong Ding yue zheng the School of Automotive and Transportation Engineering Shenzhen Polytechnic Shenzhen 518055 China the CSE Department Shanghai Jiao Tong University Shanghai 200240 China Department of Electronic Engineering Tsinghua University Beijing 100084 China

Indoor pedestrian localization is of great importance for diverse mobile applications. Many indoor localization approaches have been proposed; among them, Radio Signal Strength （RSS）-based approaches have the advantage of existing infrastructures and avoid the cost of infrastructure deployment. However, the RSS-based localization approaches suffer from poor localization accuracy when the RSS fingerprints are sparse, as illustrated by actual experiments in this study. Here, we propose a novel indoor pedestrian tracking approach for smartphone users; this approach provides a high localization accuracy when the RSS fingerprints are sparse. Besides using the RSS fingerprints, this approach also utilizes the inertial sensor readings on smartphones. This approach has two components：（i） dead-reckoning subsystem that counts the number of walking steps with off-the-shelf inertial sensor readings on smartphones and （ii） particle filtering that computes the locations with only sparse RSS readings. The proposed approach is implemented on Android-based smartphones. Extensive experiments are carried out in both srnafl and large testbeds, The evaluation results show that the tracking approach can achieve a high accuracy of 5 m （up to 95%） in indoor environments with only sparse RSS fingerprints.

关键词： localization pedestrian tracking sparse RSS fingerprints

Electro-optical properties cholesteric liquid of polymer stabilized crystal film＊

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Chinese Physics B 2011年第2期20卷 295-301页

作者： Ma Ji zheng Zhi-gang Liu Yong-gang Xuan Li State Key Laboratory of Applied Optics Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 China Department of Physics School of Science East China University of Science and Technology Shanghai 200237 China

Liquid crystals （LCs） and polymers are extensively used in various electro-optical applications. In this paper, normal mode polymer stabilized cholesteric LC film is prepared and studied. The effects of chiral dopant and monomer concentrations on the electro-optical properties, such as contrast ratio, driving voltage, hysteresis width and response time, are investigated. The reasons of electro-optical properties influenced by the concentrations of the materials are discussed. Through the proper material recipe, the electro-optical properties of polymer stabilized cholesteric LC film can be optimized.

关键词： liquid crystal polymer electro-optical property cholesteric liquid crystal

新医科背景下基于EIP-CDIO模式的急危重症护理课程思政教学探究

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卫生职业教育 2025年第1期43卷 23-27页

作者：郑娜戴月吴晶江西卫生职业学院江西南昌330200

在分析急危重症护理课程教学现状与不足之处的基础上,结合新医科人才培养目标,提出基于EIP-CDIO模式下的急危重症护理课程思政教学理念和实施路径:构思环节,明确课程思政育人目标;设计环节,优化课程思政教学团队,重构知识点,深入挖掘知... 详细信息

在分析急危重症护理课程教学现状与不足之处的基础上,结合新医科人才培养目标,提出基于EIP-CDIO模式下的急危重症护理课程思政教学理念和实施路径:构思环节,明确课程思政育人目标;设计环节,优化课程思政教学团队,重构知识点,深入挖掘知识点中蕴含的思政元素;实现环节,运用多种教学方法,将思政元素潜移默化地融入专业知识教授过程;运作环节,构建持续性教学评价机制,促进课程思政教学效果的良性提升。

关键词： EIP-CDIO模式急危重症护理课程思政新医科

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Periodic oscillation and fine structure of wedge-induced oblique detonation waves

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Acta Mechanica Sinica 2011年第6期27卷 922-928页

作者： Ming-yue Gui Bao-Chun Fan gang Dong State Key Laboratory of Transient Physics Nanjing University of Science and Technology 210094 Nanjing China State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology 100081 Beijing China

An oblique detonation wave for a Mach 7 inlet flow over a long enough wedge of 30 turning angle is simulated numerically using Euler equation and one-step rection *** fifth-order WENO scheme is adopted to capture the shock *** numerical results show that with the compression of the wedge wall the detonation wave front structure is divided into three sections：the ZND model-like strcuture,single-sided triple point structure and dual-headed triple point *** first structure is the smooth straight,and the second has the characteristic of the triple points propagating dowanstream only with the same velocity,while the dual-headed triple point structure is very *** detonation waves facing upstream and downstream propagate with different velocities,in which the periodic collisions of the triple points cause the oscillation of the detonation wave *** oscillation process has temporal and spatial *** addition,the triple point trace are recorded to obtain different cell structures in three sections.

关键词： Oblique detonation wave Wedge - Periodic oscillation Fine structure