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Two-dimensional SnS2 nanosheets on Prussian blue template for high performance sodium ion batteries

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Frontiers of Chemical Science and Engineering 2019年第3期13卷 493-500页

作者： Glenn J. Sim Kakui Ma zhixiang huang Shaozhuan huang Ye Wang Huiying Yang Pillar of Engineering Product Development Singapore University of Technology and DesignSingapore 487372Singapor Airbus Group Innovations Singapore Singapore 797562Singapore Key Laboratory of Materials Physics of Ministry of Education Department of Physics and EngineeringZhengzhou UniversityZhengzhou 450052China

Three-dimensional Prussian blue (PB) nanostructures was obtained via a one-step hydrothermal method. Subsequently, two-dimensional tin disulfide (SnS2) nanosheets were grown onto PB through a facile hydrothermal synthesis. The as prepared SnS2/PB is further employed as the anode of sodium ion batteries (SIBs). S11S2/PB nanoarchitecture delivers a specific capacity of 725.7 mAh·g-1 at 50 mA·g-1. When put through more than 200 cycles, it achieved a stable cycling capacity of 400 m Ah·g^-1 at 200 m A·g^i. The stable Na^+ storage properties of SnS2/PB was attributed to the synergistic effect among the conductive PB carbon, used as the template in this work. These results obtained potentially paves the way for the development of excellent electrochemical performance with stable performance of SIBs.

关键词： Prussian blue carbon nanocubes tin disulfide sodium ion batteries

Staggered Grid Scheme for the FFT-Based Methods

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Chinese Journal of Electronics 2019年第5期28卷 1066-1072页

作者： XIE Jiaye KONG Weibin PANG Lili SONG Weiju huang zhixiang WU Xianliang Industrial Center Nanjing Institute of Technology State Key Laboratory of Millimeter Waves College of Information Engineering Yancheng Institute of Technology Key Laboratory of Intelligent Computing and Signal Processing Ministry of Education Anhui University

A staggered grid scheme is proposed to reduce both the total memory requirement and the CPU time of generating the corrected near matrix in the FFTbased methods. Two sets of Cartesian grids are used to project the source points and the field points, *** proposed method does not lower the efficiency of computing far matrix-vector products, compared with the traditional uniform Cartesian grid scheme. Some numerical experiments are provided to demonstrate both the correctness and the efficiency of the proposed method.

关键词： Green’s function Singularity RFG-FFT Staggered grid scheme Corrected near matrix

Biosafety and data quality considerations for animal experiments with highly infectious agents at ABSL-3 facilities

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Journal of Biosafety and Biosecurity 2019年第1期1卷 50-55页

作者： Guo Ming Wang Yong Liu Jinbiao huang zhixiang Li Xiangdong ABSL-3 Laboratory of Wuhan University/Center for Animal Experiment of Wuhan University China

Animal models are crucial for the study of severe infectious diseases,which is essential for determining their pathogenesis and the development of vaccines and *** experiments involving risk grade 3 agents such as SARS CoV,HIV,***,H7N9,and Brucella must be conducted in an Animal Biosafety Level 3(ABSL-3)*** of the in vivo work,the biosafety risk in ABSL-3 facilities is higher than that in BSL-3 ***,management practices must be strengthened to ensure biosafety in the ABSL-3 ***,we cannot ignore the reliable scientific results obtained from animal experiments conducted in ABSL-3 *** is of great practical significance to study the overall biosafety concepts that can increase the scientific data *** on the management of animal experiments in the ABSL-3 Laboratory of Wuhan University,combined with relevant international and domestic literature,we indicate the main safety issues and factors affecting animal experiment results at ABSL-3 *** on these issues,management practices regarding animal experiments in ABSL-3 facilities are proposed,which take into account both biosafety and scientifically sound data.

关键词： ABSL-3 Animal experiment Biosafety Scientifically sound data quality Management

Study on the Gain Material with Four Energy Level Model Using FDTD Method

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Optics and Photonics Journal 2013年第2期3卷 15-20页

作者： Hui Xue zhixiang huang Xianliang Wu 1Key Laboratory of Intelligent Computing and Signal Processing Anhui University Hefei China 2Department of Physics and Electronic Engineering Hefei Normal University Hefei China Key Laboratory of Intelligent Computing and Signal Processing Anhui University Hefei China

A faster numerical method based on FDTD for the four energy level atomic system is present here. The initial conditions for the electrons of each level are achieving while the fields are in steady state. Polarization equation, rate equations of electronic population and Maxwell’s equations were used to describe the coupling between the atoms and electromagnetic wave. Numerical simulations, based on a finite-difference time-domain (FDTD) method, were utilized to obtain the population inversion and lasing threshold. The validity of the model and its theory is confirmed. The time, which we can observe the lasing phenomenon, is much shorter in our new model. Our model can be put into using in large scale simulations in mutiphysics to reduce the total simulated time.

关键词： Finite-Difference Time-Domain Gain Material Lasing

A high-isolation coupled-fed building block for metal-rimmed 5G smartphones

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Frontiers of Information Technology & Electronic Engineering 2023年第11期24卷 1657-1664页

作者： Aidi REN Chengwei YU Lixia YANG Wei CUI zhixiang huang Ying LIU Information Materials and Intelligent Sensing Laboratory of Anhui Province Anhui UniversityHefei 230601China Aviation Key Laboratory of Science and Technology on Electromagnetic Environmental Effects Shenyang I10000China Science and Technology on Antenna and Microwave Laboratory Xidian UniversityXi'an 710071China

A dual-antenna building block with high isolation is presented for metal-rimmed fifth-generation(5G)smartphones.A coupled-fed loop antenna and a coupledfed slot antenna based on a simple T-slot etched on the ground pl... 详细信息

关键词： antenna slot smart

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一种新型的高阶时域有限差分方法

电子与信息学报 2020年第2期42卷 425-429页

作者：许杰徐珂黄志祥安徽大学电子信息工程学院

相比于传统高阶时域有限差分算法(FDTD)而言,该文提出了一种改进的高阶FDTD的优化方法,该算法基于安培环路定律,通过计算机技术寻找到一组最优的系数使得FDTD方法的全局色散误差达到最小,通过不同分辨率下的点源辐射模拟证明了该方法在... 详细信息

相比于传统高阶时域有限差分算法(FDTD)而言,该文提出了一种改进的高阶FDTD的优化方法,该算法基于安培环路定律,通过计算机技术寻找到一组最优的系数使得FDTD方法的全局色散误差达到最小,通过不同分辨率下的点源辐射模拟证明了该方法在较低分辨率的情况下仍然具有极低的相位误差,对于解决电大尺寸结构建模中的数值色散等问题提供了有效的解决方案。

关键词：时域有限差分方法相位误差优化算法安培环路定律

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高速列车模型风洞试验数据的影响因素分析

铁道学报 2016年第7期38卷 34-39页

作者：黄志祥陈立蒋科林中国空气动力研究与发展中心空气动力学国家重点实验室四川绵阳621000

研究列车风洞试验模拟方式和试验条件等因素对试验数据尤其是气动阻力数据的影响规律。研究结果表明:与有路基相比,在无路基状态下,头车、中间车、尾车和全车气动阻力都明显增大;路基前端伸出车头的长度不少于3倍车身宽度,路基前端斜坡... 详细信息

研究列车风洞试验模拟方式和试验条件等因素对试验数据尤其是气动阻力数据的影响规律。研究结果表明:与有路基相比,在无路基状态下,头车、中间车、尾车和全车气动阻力都明显增大;路基前端伸出车头的长度不少于3倍车身宽度,路基前端斜坡坡度不大于35°,则路基前端长度和坡度的变化对气动阻力数据的影响较小;与单腿支座相比,双腿或多腿支座下模型各节车厢的气动力重复性精度更加优良;一般可以不考虑阻塞影响修正,而应根据模型区域的轴向静压梯度作相应的修正;固定地板表面附面层厚度偏大,将导致气动阻力试验结果偏小。

关键词：高速列车风洞试验气动阻力试验数据影响因素

基于动态中台架构的财务数字化转型研究--以传统数据密集型企业为例

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管理评论 2023年第12期35卷 333-352页

作者：韩笑黄志翔黄源武汉理工大学管理学院武汉430070 武汉理工大学数字治理与管理决策创新研究院武汉430070 腾讯计算机系统有限公司光子美术中心深圳518057 中铁第四勘察设计院集团有限公司工程经济设计与研究院武汉430063

伴随数字经济的发展,传统财务管理架构僵化、信息沟通不畅、抗风险能力差等问题逐渐暴露。如何有效开展财务数字化转型是当前我国传统企业亟待解决的难题。尽管既往研究已探索过以共享服务中心或中台为核心的智能财务管理模式,然而相关... 详细信息

伴随数字经济的发展,传统财务管理架构僵化、信息沟通不畅、抗风险能力差等问题逐渐暴露。如何有效开展财务数字化转型是当前我国传统企业亟待解决的难题。尽管既往研究已探索过以共享服务中心或中台为核心的智能财务管理模式,然而相关研究多围绕互联网企业及泛零售企业,聚焦于静态的组织架构,未能充分考虑数字经济时代外部市场的快速变化。针对该问题,本文选取传统数据密集型企业为研究对象,从动态视角出发,以财务数字化转型理论和共享服务理论为基础,结合动态中台战略,应用大数据、区块链、人工智能等数字技术,创建了具备动态中台架构、深度智能化、以用户为导向等特征的财务数字化转型模型。在此基础上,通过对中铁四院的财务数字化转型开展纵向案例研究,验证这套模型的有效性。结果表明,该模型能够有效提升企业财务的数字服务能力和业务敏捷能力,以及改善用户服务体验。本文有助于进一步深化对中台的理论认知,并为传统数据密集型企业的财务数字化转型提供一定的实践启示。

关键词：财务共享动态中台去中心化数字化转型数据密集型

MEMS-actuated terahertz metamaterials driven by phase-transition materials

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Frontiers of Optoelectronics 2024年第2期17卷 23-32页

作者： zhixiang huang Weipeng Wu Eric Herrmann Ke Ma Zizwe A.Chase Thomas A.Searles M.Benjamin Jungfleisch Xi Wang Department of Materials Science and Engineering College of EngineeringUniversity of DelawareNewarkDE 19716USA Department of Physics and Astronomy College of Arts and SciencesUniversity of DelawareNewarkDE 19716USA Department of Electrical and Computer Engineering College of EngineeringUniversity of Illinois ChicagoChicagoIL 60607USA

The non-ionizing and penetrative characteristics of terahertz(THz)radiation have recently led to its adoption across a variety of *** effectively utilize THz radiation,modulators with precise control are *** most recent THz modulators manipulate the amplitude,frequency,or phase of incident THz radiation,considerably less progress has been made toward THz polarization *** methods for polarization control suffer from high driving voltages,restricted modulation depth,and narrow band capabilities,which hinder device performance and broader ***,an ideal THz modulator that offers high modulation depth along with ease of processing and operation is *** this paper,we propose and realize a THz metamaterial comprised of microelectromechanical systems(MEMS)actuated by the phase-transition material vanadium dioxide(VO_(2)).Simulation and experimental results of the three-dimensional metamaterials show that by leveraging the unique phase-transition attributes of VO_(2),our THz polarization modulator offers notable advancements over existing designs,including broad operation spectrum,high modulation depth,ease of fabrication,ease of operation condition,and continuous modulation *** enhanced features make the system a viable candidate for a range of THz applications,including telecommunications,imaging,and radar systems.

关键词： Metamaterials MEMS THz VO_(2) Phase-transition material