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基于Meta分析的芝麻粕替代豆粕饲粮对肉羊生长性能及肉品质的影响

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饲料工业 2024年第11期45卷 91-98页

作者：徐泽君王献伟牛岩周永亮徐泽立河南省畜牧技术推广总站河南郑州450008 河南畜牧规划设计研究院河南郑州450008 河南羊羊乐农牧科技有限公司河南郑州450008

研究旨在采用Meta分析方法分析芝麻粕替代豆粕饲粮对肉羊生长性能及肉品质的影响,为芝麻粕作为肉羊饲料蛋白源的可行性提供依据。通过关键词相互组合的方式在中英文数据库中搜集相关文献。按照纳入排除标准共纳入8篇文献,包括试验组138... 详细信息

研究旨在采用Meta分析方法分析芝麻粕替代豆粕饲粮对肉羊生长性能及肉品质的影响,为芝麻粕作为肉羊饲料蛋白源的可行性提供依据。通过关键词相互组合的方式在中英文数据库中搜集相关文献。按照纳入排除标准共纳入8篇文献,包括试验组138只用芝麻粕替代豆粕饲喂的羔羊,对照组66只用豆粕饲喂的羔羊,以平均日增重和料肉比作为生长性能参数;以屠宰后pH24 h、剪切力、系水力作为羊肉品质主要参数,共收集204只羔羊的相关数据。通过RevMan软件进行Meta分析,根据森林图检查纳入文献是否具有异质性,通过亚组分析确定异质性来源,最后进行灵敏度分析,评价分析结果的稳定性,根据漏斗图评估文献发表偏倚。结果表明:芝麻粕替代豆粕饲粮显著提高了肉羊的平均日增重(P≤0.05),显著降低了料肉比(P≤0.05)。对于羊肉宰后pH24 h、剪切力、系水力均无显著影响(P>0.05)。亚组分析发现,芝麻粕替代比例低于20%时能极显著提高肉羊的平均日增重(P<0.01)和显著降低料肉比(P≤0.05);饲喂周期大于70 d时,能够显著提升肉羊的平均日增重(P≤0.05),显著降低料肉比(P≤0.05)。灵敏度分析显示,Meta分析结果稳定、可靠,漏斗图显示纳入文献无发表偏倚。综上所述,芝麻粕替代豆粕能够显著提升肉羊的生长性能,当饲粮中芝麻粕替代豆粕比例低于20%和饲喂周期大于70 d时对肉羊生长性能的提升最为显著,而且对肉品质无任何负面影响,从生产性能的角度来说,芝麻粕可以作为肉羊的一种新型饲料蛋白源。

关键词：芝麻粕豆粕肉羊生产性能肉品质 Meta分析

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Near-Threshold Wide-Voltage Design Review

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清华大学学报:自然科学版(英文版) 2023年第4期28卷 696-718页

作者： Yan Zhao Jun Yang Chao Chen Weiwei Shan Peng Cao yongliang zhou Ziyu Li Tai Yang National Application Specific Integrated Circuit(ASIC)Center Southeast UniversityNanjing 210096China

This paper presents a comprehensive review of near-threshold wide-voltage designs on memory,resilient logic designs,low voltage Radio Frequency(RF)circuits,and timing *** the prosperous development of wearable applications,low power consumption has become one of the primary challenges for IC *** improve the power efficiency,the prefer scheme is to operate at an ultra low voltage of Near Threshold Voltage(NTV).For the performance variation and degradation,a self-adaptive margin assignment technique is proposed in the low *** proposed technique tracks the circuit states in real time and dynamically allocates voltage margins,reducing the minimum supply voltage and achieving higher energy *** self-adaptive margin assignment technique can be used in Static Random Access Memory(SRAM),digital circuits,and analog/RF *** on the self-adaptive margin assignment technique,the minimum voltage in the 40 nm CMOS process is reduced to 0.6 V or even lower,and the energy efficiency is increased by 3–4 times.

关键词： Near Threshold Voltage(NTV) wide-voltage memory resilient logic design low voltage Radio Frequency(RF) timing analysis

Improved Particle Swarm Optimization for Parameter Identification of Permanent Magnet Synchronous Motor

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Computers, Materials & Continua 2024年第5期79卷 2187-2207页

作者： Shuai zhou Dazhi Wang yongliang Ni Keling Song Yanming Li School of Information Science and Engineering Northeastern UniversityShenyang110819China China Northern Vehicle Research Institute Beijing100072China

In the process of identifying parameters for a permanent magnet synchronous motor,the particle swarm optimization method is prone to being stuck in local optima in the later stages of iteration,resulting in low parameter *** work proposes a fuzzy particle swarm optimization approach based on the transformation function and the filled *** approach addresses the topic of particle swarmoptimization in parameter identification from two ***,the algorithm uses a transformation function to change the form of the fitness function without changing the position of the extreme point of the fitness function,making the extreme point of the fitness function more prominent and improving the algorithm’s search ability while reducing the algorithm’s computational ***,on the basis of themulti-loop fuzzy control systembased onmultiplemembership functions,it is merged with the filled function to improve the algorithm’s capacity to skip out of the local optimal *** approach can be used to identify the parameters of permanent magnet synchronous motors by sampling only the stator current,voltage,and speed *** simulation results show that the method can effectively identify the electrical parameters of a permanent magnet synchronous motor,and it has superior global convergence performance and robustness.

关键词： Transformation function filled function fuzzy particle swarm optimization algorithm permanent magnet synchronous motor parameter identification

一种宽带高增益四单元电磁超表面MIMO天线

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计算机应用文摘 2024年第6期40卷 40-42页

作者：李海雄韩贝张博龙潘陈毅周永亮榆林学院信息工程学院陕西榆林719000 陕西百川经纬信息科技有限公司陕西榆林719000 陕西北斗科技开发应用有限公司陕西榆林719000

为了满足5G大规模MIMO技术的需求,文章提出了一种上层加载电磁超表面结构的四单元微带MIMO天线,其中上层加载的电磁超表面辐射能量通过改变微带天线的谐振结构改善了天线的性能,且任何端口隔离度均小于-15dB,完全符合工程实践要求。同时... 详细信息

为了满足5G大规模MIMO技术的需求,文章提出了一种上层加载电磁超表面结构的四单元微带MIMO天线,其中上层加载的电磁超表面辐射能量通过改变微带天线的谐振结构改善了天线的性能,且任何端口隔离度均小于-15dB,完全符合工程实践要求。同时,文章利用专业电磁仿真软件HFSS对天线模型进行了详细分析和优化,并对实物模型进行了测试。仿真测试结果显示,该MIMO天线的10dB带宽达20.4%,远场辐射增益最大值为6.48dBi,能够应用于5G无线移动通信系统。

关键词： MIMO天线宽带天线高增益天线

Investigation of MXene nanosheets based radio-frequency electronics by skin depth effect

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Nano Research 2024年第4期17卷 3061-3067页

作者： Rongguo Song Yunfa Si Wei Qian Haoran Zu Bilei zhou Qinglei Du Daping He yongliang Wang Air Force Early Warning Academy Wuhan 430019China Hubei Engineering Research Center of RF-Microwave Technology and Application Wuhan University of TechnologyWuhan 430070China Hainan Research Institute Wuhan University of TechnologySanya 572000China

Various new conductive materials with exceptional properties are utilized for the preparation of electronic *** ultra-high conductivity is crucial to attain excellent electrical ***,there is a lack of systematic research on the impact of conductor material thickness on device ***,we investigate the effect of conductor thickness on power transmission and radiation in radio-frequency(RF)and microwave electronics based on MXene nanosheets material transmission lines and *** MXene transmission line with thickness above the skin depth exhibits a good transmission coefficient of approximately-3 dB,and the realized gain of MXene antennas exceeds 2 ***,the signal transmission strength of MXene antenna with thickness above the skin depth is higher than 5-μm MXene antenna approximately 5.5 *** lines and antennas made from MXene materials with thickness above the skin depth exhibit stable and reliable performance,which has significant implications for obtaining high-performance RF and microwave electronics based on new conductive materials.

关键词： MXene film radiao-frequency electronics antenna transmission line skin depth

Effect of Different Rare-Earth on Microstructure and Properties of α-Sialon Ceramics

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Journal of Materials Science & Technology 2008年第6期24卷 878-882页

作者： Chunfeng LIU Feng YE Yu zhou yongliang WANG Jiancun RAO Institute for Advanced Ceramics Harbin Institute of Technology Harbin 150001 China

Densified Yb-, Y-, Dy-, Sin- and Nd-α-Sialon ceramics were prepared by two-step hot sintering. The variation of microstructure and properties with different rare-earth was investigated. The ceramics doped with smaller cations （Yb3＋, y3＋ and Dy3＋） are fully composed of α-Sialon, while in the larger cations （Sm3＋ and Nd3＋） doped ceramics also exist a few intergranular phase Mt （Re2Si3-xAlxO3＋xN4-x） in triple-point pockets. With increasing the radius of the rare-earth cations, the elongated α-Sialon grains form instead of the equiaxed grains in Yb-α-Sialon, and the aspect ratio of grains increases. All the ceramics possess high hardness, and the value of 21 GPa is achieved for Yb- and Y-α-Sialon. With increasing the ionic size of rare-earth, the hardness decreases slightly but the toughness tends to increase. Nd-α-Sialon possesses the highest toughness with the value of 5.4 MPa·m^1/2.

关键词： α-Sialon Rare-earth Microstructure Mechanical properties

Nonreciprocal thermal metamaterials:Methods and applications

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International Journal of Minerals,Metallurgy and Materials 2024年第7期31卷 1678-1693页

作者： Zhengjiao Xu Chuanbao Liu Xueqian Wang yongliang Li Yang Bai Institute for Advanced Material and Technology University of Science and Technology BeijingBeijing 100083China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China

Nonreciprocity of thermal metamaterials has significant application prospects in isolation protection,unidirectional transmission,and energy ***,due to the inherent isotropic diffusion law of heat flow,it is extremely difficult to achieve nonreciprocity of heat *** review presents the recent developments in thermal nonreciprocity and explores the fundamental theories,which underpin the design of nonreciprocal thermal metamaterials,i.e.,the Onsager reciprocity ***,three methods for achieving nonreciprocal metamaterials in the thermal field are elucidated,namely,nonlinearity,spatiotemporal modulation,and angular momentum bias,and the applications of nonreciprocal thermal metamaterials are *** also discuss nonreciprocal thermal ***,the potential applications of nonreciprocity to other Laplacian physical fields are ***,the prospects for advancing nonreciprocal thermal metamaterials are highlighted,including developments in device design and manufacturing techniques and machine learning-assisted material design.

关键词： thermal metamaterials nonreciprocity nonlinearity spatiotemporal modulation

A survey of in-spin transfer torque MRAM computing

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Science China(Information Sciences) 2021年第6期64卷 30-44页

作者： Hao CAI Bo LIU Juntong CHEN Lirida NAVINER yongliang zhou Zhen WANG Jun YANG National ASIC System Engineering Research Center Southeast University Laboratoire Traitement et Communication de l'Information Télécom Paris Nanjing Prochip Electronic Technology Co. Ltd.

In traditional von Neumann computing architectures, the essential transfer of data between the processor and memory hierarchies limits the computational efficiency of next-generation *** emerging in-memory computing(IMC) approach addresses this issue and facilitates the movement of significant data and rapid computations. Among the different memory types, intrinsic energy efficiency is demonstrated by in-magnetic random access memory(MRAM) computing with a low-power spintronic magnetic tunnel junction device and hybrid integration at an advanced complementary metal-oxide semiconductor node. This study reviews state-of-the-art techniques for managing IMC with an emphasis on spin-transfer torque-MRAM computing via design schemes at the bit-cell, circuit, and system levels. In addition, this study presents effective design techniques and potential challenges and demonstrates the existing limitations of in-MRAM computing and potential methods for overcoming these issues. This study also considers the design technology co-optimization from the IMC perspective.

关键词： spin-transfer torque-magnetoresistive random access memory in-memory computing magnetic tunnel junction analog computing nonvolatile memory Boolean logic neural network

Design of Protograph LDPC-Coded MIMO-VLC Systems with Generalized Spatial Modulation

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China Communications 2024年第3期21卷 118-136页

作者： Dai Lin Fang Yi Guan yongliang Mohsen Guizani School of Information Engineering Guangdong University of TechnologyGuangzhou 51006China The State Key Laboratory of Integrated Services Networks Xidian UniversityXi’an 710126China School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore Department of Machine Learning Mohamed Bin Zayed University of Artificial Intelligence(MBZUAI)Abu DhabiUnited Arab Emirates

This paper investigates the bit-interleaved coded generalized spatial modulation(BICGSM) with iterative decoding(BICGSM-ID) for multiple-input multiple-output(MIMO) visible light communications(VLC). In the BICGSM-ID scheme, the information bits conveyed by the signal-domain(SiD) symbols and the spatial-domain(SpD) light emitting diode(LED)-index patterns are coded by a protograph low-density parity-check(P-LDPC) code. Specifically, we propose a signal-domain symbol expanding and re-allocating(SSER) method for constructing a type of novel generalized spatial modulation(GSM) constellations, referred to as SSERGSM constellations, so as to boost the performance of the BICGSM-ID MIMO-VLC ***, by applying a modified PEXIT(MPEXIT) algorithm, we further design a family of rate-compatible P-LDPC codes, referred to as enhanced accumulate-repeat-accumulate(EARA) codes,which possess both excellent decoding thresholds and linear-minimum-distance-growth property. Both analysis and simulation results illustrate that the proposed SSERGSM constellations and P-LDPC codes can remarkably improve the convergence and decoding performance of MIMO-VLC systems. Therefore, the proposed P-LDPC-coded SSERGSM-mapped BICGSMID configuration is envisioned as a promising transmission solution to satisfy the high-throughput requirement of MIMO-VLC applications.

关键词： bit-interleaved coded modulation generalized spatial modulation multiple-input multipleoutput protograph LDPC codes visible light communication