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Journal of Southeast University(English Edition) 2018年第2期34卷 139-146页

作者： Hui Min Zhang Xingang Zhang Meng Yu Chao zhu xiaowei State Key Laboratory of Millimetre Waves Southeast UniversityNanjing 211189China College of Physics and Electronic Engineering Nanyang Normal UniversityNanyang 473061China

A new real and complex-valued hybrid time-delay neural network(TDNN)is proposed for modeling and linearizing the broad-band power amplifier(BPA).The neural network includes the generalized memory effect of input signals,complex-valued input signals and the fractional order of a complex-valued input signal module,and,thus,the modeling accuracy is improved significantly.A comparative study of the normalized mean square error(NMSE)of the real and complex-valued hybrid TDNN for different spread constants,memory depths,node numbers,and order numbers is studied so as to establish an optimal TDNN as an effective baseband model,suitable for modeling strong nonlinearity of the BPA.A 51-dBm BPA with a 25-MHz bandwidth mixed test signal is used to verify the effectiveness of the proposed *** with the memory polynomial(MP)model and the real-valued TDNN,the real and complex-valued hybrid TDNN is highly effective,leading to an improvement of 5 dB in the *** addition,the real and complex-valued hybrid TDNN has an improvement of 0.6 dB over the generalized MP model in the ***,it has better numerical ***,the proposed TDNN presents a significant improvement over the real-valued TDNN and the MP models in suppressing out-of-band spectral regrowth.

关键词： power amplifier neural network linearization modeling

金刚石薄锯片高速锯切花岗石过程中的锯切力特性

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金刚石与磨料磨具工程 2007年第6期27卷 1-5页

作者：祝小威徐西鹏华侨大学石材加工研究重点实验室泉州362021

本文对金刚石薄锯片高速锯切花岗石过程中的锯切力特性进行试验研究,在较宽的参数范围下,通过测量水平力、垂直力和主轴功率来计算切向力和法向力。对锯切力、力比、单颗金刚石承受的平均载荷进行了分析。结果显示,提高锯片的线速度使... 详细信息

本文对金刚石薄锯片高速锯切花岗石过程中的锯切力特性进行试验研究,在较宽的参数范围下,通过测量水平力、垂直力和主轴功率来计算切向力和法向力。对锯切力、力比、单颗金刚石承受的平均载荷进行了分析。结果显示,提高锯片的线速度使锯切力、力比和单颗金刚石磨粒承受平均载荷减小;在高速锯切时,锯切力随着锯切深度和进给速度的增加而增加,而进给速度对锯切力的明显影响要小于锯切深度,应选择小切深大进给的工艺参数组合;锯切力比随锯切深度的增加而增加,随进给速度的增加而减小;单颗金刚石磨粒承受平均载荷随着单颗粒金刚石最大未变形切削厚度的增大而线性增大。

关键词：薄锯片高速锯切锯切力

Leaf Color(LC), which encodes a chloroplast-localized RNA recognition motif containing protein, influences leaf color and nodule number in soybean

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Leaf Color(LC), which encodes a chloroplast-localized RNA re...

第十届上海市植物生物学青年学术研讨会

作者： xiaowei zhu Yucheng Liu Guoan Zhou Yi Pan Rui Yang Zhixi Tian Baoge zhu State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biology Chinese Academy of Sciences University of Chinese Academy of Sciences Horticulture Research Institute Shanghai Academy of Agricultural Sciences

The normal green leaves are crucial organs for plant ***,we characterize a soybean yellow leaf mutant yl,which exhibits yellow leaves due to the reduced levels of chlorophyll contents especially the chlorophyll *** ad...

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嵌银丝涤长丝/棉绉布的设计与生产

上海纺织科技 2018年第6期46卷 44-45页

作者：朱晓炜江苏工程职业技术学院

嵌银丝涤长丝/棉交织绉布是一种高档裙用面料,介绍了其设计过程及主要生产技术措施。进行了织物规格、风格设计和色纱搭配方案;优化了整浆工艺、上机张力、开口工艺和引纬工艺等参数,采取了合理的技术措施,避免了在织造过程中产生纬缩... 详细信息

嵌银丝涤长丝/棉交织绉布是一种高档裙用面料,介绍了其设计过程及主要生产技术措施。进行了织物规格、风格设计和色纱搭配方案;优化了整浆工艺、上机张力、开口工艺和引纬工艺等参数,采取了合理的技术措施,避免了在织造过程中产生纬缩等疵点。经过设计,该织物织机效率达到93%,下机一等品率为85%,入库一等品率为99%。

关键词：涤纶棉纱交织物银丝嵌线绉布产品设计生产技术

Activation of histamine/H1R signaling pathway promotes cardiac differentiation and maturation of human induced pluripotent stem cells

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Activation of histamine/H1R signaling pathway promotes cardi...

A Single-Board Integrated Millimeter-Wave Asymmetric Full-Digital Beamforming Array for B5G/6G Applications

中国解剖学会2021年年会

作者： zhu xiaowei Ding Suling zhu Baoling Wang Xiangfei Zou Yunzeng Yang Xiangdong Ge Junbo Shanghai Institute of Cardiovascular Diseases Zhongshan HospitalFudan University Department of Cardiology Zhongshan HospitalFudan University

The efficiency and quality of human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) is crucial for regenerative medicine, disease modeling,drug screening and the study of the development events during cardiac ***,their applications have been hampered by the differentiation efficiency,poor maturation and high interline variability.

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Engineering 2024年第10期41卷 35-50页

作者： Qingqing Lin Jun Xu Kai Chen Long Wang Wei Li Zhiqiang Yu Guangqi Yang Jianyi Zhou Zhe Chen Jixin Chen xiaowei zhu Wei Hong State Key Laboratory of Millimeter Waves School of Information Science and EngineeringSoutheast UniversityNanjing 210096China Purple Mountain Laboratories Nanjing 211111China Frontiers Science Center for Mobile Information Communication and Security Southeast UniversityNanjing 210096China

In this article,a single-board integrated millimeter-wave(mm-Wave)asymmetric full-digital beamforming(AFDBF)array is developed for beyond-fifth-generation(B5G)and sixth-generation(6G)*** proposed integrated array effectively addresses the challenge of arranging a large number of ports in a full-digital array by designing vertical connections in a three-dimensional space and successfully integrating full-digital transmitting(Tx)and receiving(Rx)arrays independently in a single *** the traditional symmetric array,the proposed asymmetric array is composed of an 8×8 Tx array arranged in a square shape and an 8+8 Rx array arranged in an L *** center-to-center distance between two adjacent elements is 0.54k0 for both the Tx and Rx arrays,where k0 is the free-space wavelength at 27 *** proposed AFDBF array possesses a more compact structure and lower system hardware cost and power consumption compared with conventional brick-type full-digital *** addition,the energy efficiency of the proposed AFDBF array outperforms that of a hybrid beamforming *** measurement results indicate that the operating frequency band of the proposed array is 24.25–29.50 *** eight-element linear array within the Tx array can achieve a scanning angle ranging from-47°to+47°in both the azimuth and the elevation planes,and the measured scanning range of each eight-element Rx array is–45°to+45°.The measured maximum effective isotropic radiated power(EIRP)of the eight-element Tx array is 43.2 dBm at 28.0 GHz(considering the saturation point).Furthermore,the measured error vector magnitude(EVM)is less than 3%when 64-quadrature amplitude modulation(QAM)waveforms are used.

关键词： Full-digital beamforming array Asymmetric structure Single-board integrated Beyond fifth-generation and sixthgeneration Millimeter-wave communication Complex modulation Printed circuit board Vertical connection

南海南沙海区沉积有机质分布特征及其指示意义

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海洋地质与第四纪地质 2023年第2期43卷 45-54页

作者：陈芬黎刚朱小畏颜文中国科学院南海海洋研究所边缘海与大洋地质重点实验室广州510301 中国科学院大学北京100049 南方海洋科学与工程广东省实验室(广州) 广州511458

对现在过程的研究可为了解过去沉积环境演变信息提供重要线索。对南海南沙广阔海域23个现代表层沉积物样品总有机碳(TOC)、总氮(TN)含量及同位素组成(δ13CTOC和δ15N)进行测试分析,以期通过沉积有机质的现代组成分布特征为反演其历史... 详细信息

对现在过程的研究可为了解过去沉积环境演变信息提供重要线索。对南海南沙广阔海域23个现代表层沉积物样品总有机碳(TOC)、总氮(TN)含量及同位素组成(δ13CTOC和δ15N)进行测试分析,以期通过沉积有机质的现代组成分布特征为反演其历史时空分布变化规律及其驱动机制提供参考。南沙海区表层沉积物TOC/TN(5.5~7.9,平均为6.5±0.6)和δ13CTOC(–21.9‰~–18.7‰,平均为–21.0‰±0.7‰)揭示了沉积有机质主要来自海源贡献;δ13CTOC与TOC和TOC/TN的相关性分析表明了TOC未受明显的早期成岩作用影响,因此表层沉积物TOC可用于反映现代上层海水生产力状况。南沙海区表层沉积物TOC(0.32%~0.97%,平均为0.67%±0.17%)呈现明显的西-东向分布差异,高值主要位于西部前缘地带,低值主要分布在东部海域。表层沉积物TOC的地理分布特征表明了西南夏季风对南沙海域表层海水生产力的主要调控作用—由夏季风产生的越南上升流和湄公河陆源输入带来的高通量营养盐促进了西部前缘海域浮游植物的勃发,而随着站位距离的增加其施肥效应越来越弱。表层沉积物TOC和TN的强相关性(R2=0.95)以及δ15N的空间分布特征暗示了南沙海域沉积物δ15N未受陆源河流影响,记录了上层海水δ15N信号,从而指示了相关的氮循环过程。

关键词：表层沉积物有机质来源海洋生产力东亚季风南沙海区

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数字预失真功放EVM特性分析与实验验证

固体电子学研究与进展 2009年第4期29卷 494-498页

作者：王晶琦朱晓维东南大学毫米波国家重点试验室南京210096

推导了无线通信系统误差向量幅度(EVM)与邻道功率比(ACPR)指标的相互关系,得出了通过功放线性化改善ACPR使得系统EVM减小的结论。随后采用具备结构简单、处理速度快、实时性好等优点的查找表(LUT)方法设计数字预失真器(DPD),数字预失真... 详细信息

推导了无线通信系统误差向量幅度(EVM)与邻道功率比(ACPR)指标的相互关系,得出了通过功放线性化改善ACPR使得系统EVM减小的结论。随后采用具备结构简单、处理速度快、实时性好等优点的查找表(LUT)方法设计数字预失真器(DPD),数字预失真器用FPGA方式实现。对该数字预失真器进行了仿真分析,验证了理论推导结论,最后给出DPD功率放大器试验测试数据,与仿真结果吻合良好。

关键词：功率放大器数字预失真查找表误差向量幅度邻道功率比

State of the Art of New Technologies for Electromagnetic Metallurgy Based on Clean Steel Production

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State of the Art of New Technologies for Electromagnetic Met...

马克思主义宗教观的丰富和发展——学习“引导适应论”的一点体会

“第十届中国钢铁年会”暨“第六届宝钢学术年会”

作者： Liu Xingan Li Dewei Wang Qiang Su Zhijian zhu xiaowei He Jicheng Key Laboratory of Electromagnetic Processing of Materials（Ministry of Education） Northeastern University

The development and promotion of clean steel technology is one of the hot issues and it has important applications in steel industry, although there are some difficulties should be resolved. New generation of electromagnetic metallurgical technologies could dramatically improve steel cleanliness, so as to achieve the purpose of improving the quality of steel and increasing productivity. In this paper, two representative technologies are introduced. One is an electromagnetic induction-controlled automated steel-teeming, the other one is a technology of electromagnetic swirling flow in the submerged entry nozzle（SEN）. The basic idea of the first one is using an induction coil located in the nozzle brick to melt part or all of the new well-packing material（i.e., Fe-C alloy with a similar composition of molten steel）, which replaces the conventional nozzle sand, and to obtain smooth automated steel teeming. In the latter technology, a rotating electromagnetic field is set up around the SEN to induce swirling flow in it by the Lorentz force without contact with the steel. This technology could avoid nozzle clogging, and has great effect on improving the uniformity and stability of the outlet flow. It could also reduce the meniscus fluctuation, homogenize the distributions of flow and temperature in the mold. The development and promotion of these kind of electromagnetic metallurgical technologies has great significance for the production of clean steel in future.

关键词： electromagnetic metallurgy clean steel electromagnetic steel-teeming electromagnetic swirling flow continuous casting electromagnetic processing of materials

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世界宗教研究 2004年第4期 1-7页

作者：陈荣富朱晓卫浙江工商大学

本文认为“积极引导宗教和社会主义社会相适应”的理论,从根本上解决了宗教与社会主义社会的关系问题,在三个方面丰富和发展了马克思主义宗教观:(1)丰富和发展了马克思主义关于宗教起源、宗教存在的根源和宗教消亡的理论;(2)丰富和发展... 详细信息

本文认为“积极引导宗教和社会主义社会相适应”的理论,从根本上解决了宗教与社会主义社会的关系问题,在三个方面丰富和发展了马克思主义宗教观:(1)丰富和发展了马克思主义关于宗教起源、宗教存在的根源和宗教消亡的理论;(2)丰富和发展了马克思主义关于宗教发展规律、宗教与社会关系的理论;(3)丰富和发展了马克思主义关于宗教社会功能的理论。它把中国共产党人对宗教的认识提高到新的科学水平。

关键词：马克思主义宗教观引导适应论宗教与社会主义