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A Non-Parametric Scheme for Identifying Data Characteristic Based on Curve Similarity Matching

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IEEE/CAA Journal of Automatica Sinica 2024年第6期11卷 1424-1437页

作者： Quanbo Ge yang Cheng Hong Li ziyi Ye Yi Zhu Gang Yao School of Automation Nanjing University of Information Science&TechnologyJiangsu Provincial University Key Laboratory of Big Data Analysis and Intelligent SystemsNanjing University of Information Science&Technologyand the Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET)Nanjing University of Information Science&TechnologyNanjing 210044China School of Department of Logistics Engineering Shanghai Maritime UniversityShanghai 201306China China Classification Society Nantong Office Nantong 226006China Chinese Flight Test Establishment Xi’an 710089China School of Mathematics Tsinghua UniversityBeijing 100084China School of Automation Nanjing University of Information Science&TechnologyNanjing 210044China Department of Logistics Engineering Shanghai Maritime UniversityShanghai 201306China IEEE

For accurately identifying the distribution charac-teristic of Gaussian-like noises in unmanned aerial vehicle(UAV)state estimation,this paper proposes a non-parametric scheme based on curve similarity *** the framework of the pro-posed scheme,a Parzen window(kernel density estimation,KDE)method on sliding window technology is applied for roughly esti-mating the sample probability density,a precise data probability density function(PDF)model is constructed with the least square method on K-fold cross validation,and the testing result based on evaluation method is obtained based on some data characteristic analyses of curve shape,abruptness and *** com-parison simulations with classical methods and UAV flight exper-iment shows that the proposed scheme has higher recognition accuracy than classical methods for some kinds of Gaussian-like data,which provides better reference for the design of Kalman filter(KF)in complex water environment.

关键词： Curve similarity matching Gaussian-like noise non-parametric scheme parzen window.

Research on the Optimization of Capital Structure of Kweichow Moutai CO., LTD

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Research on the Optimization of Capital Structure of Kweicho...

基于时间特征细化网络的时空视频超分辨率研究

作者： ziyi yang Nanjing University of Science and Technology

The capital structure of the enterprise has great influence on the market value and capital cost of the enterprise. At the same time, the quality structure of the enterprise plays a very important role. On the basis of the research status at home and abroad, this paper defines the connotation of capital structure, analyzes the influencing factors of capital structure, and introduces the theory of capital structure optimization. Taking Maotai of Guizhou province as the object of study, this paper analyzes the current situation of Moutai’s capital structure from the three angles of debt ratio, debt structure and equity structure by analyzing the financing mode of Moutai Company and the data of the assets structure table in the last five years. On this basis, the method of comparative analysis is used to select the same It is found that there are some problems in the capital structure of Guizhou Moutai joint-stock company, such as low debt ratio, unreasonable debt structure and single equity structure. Then through the monetary policy, taxation, corporate governance and management behavior and other factors, in the macro, industry, self-management three levels of analysis of the causes of the problem. Finally, combining the causes of capital structure problems with financial reporting, this paper puts forward specific optimization measures to improve capital structure optimization management ability, improve corporate governance, broaden financing channels and strengthen internal control. It is hoped that the capital structure of Moutai in Guizhou can be optimized.

关键词： Capital structure Optimization Corporate governance

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南通大学学报（自然科学版） 2024年第3期23卷 10-22页

作者：姚晓娟穆柯潘沛杨紫伊赵雨飞朱永贵中国传媒大学数据科学与智能媒体学院北京100024

时空视频超分辨率(space-time video super-resolution,STVSR)通过时间和空间2个尺度提升视频的质量,从而实现在视频采集设备、传输或者存储有限的情况下依然能实时地呈现高分辨率和高帧率的视频,满足人们对超高清画质的追求。相比两阶... 详细信息

时空视频超分辨率(space-time video super-resolution,STVSR)通过时间和空间2个尺度提升视频的质量,从而实现在视频采集设备、传输或者存储有限的情况下依然能实时地呈现高分辨率和高帧率的视频,满足人们对超高清画质的追求。相比两阶段方法,一阶段方法实现的是特征层面而非像素层面的帧插值,其在推理速度和计算复杂度上都明显更胜一筹。一些现有的一阶段STVSR方法采用基于像素幻觉的特征插值,这幻化了像素,因此很难应对帧间快速运动物体的预测。为此,提出一种基于光流法的金字塔编码器-解码器网络来进行时间特征插值,实现快速的双向光流估计和更真实自然的纹理合成,在使得网络结构更高效的同时弥补了大运动对光流估计带来的不稳定性。另外,空间模块采用基于滑动窗口的局部传播和基于循环网络的双向传播来强化帧对齐,整个网络称为时间特征细化网络(temporal feature refinement netowrk,TFRnet)。为了进一步挖掘TFRnet的潜力,将空间超分辨率先于时间超分辨率(space-first),在几种广泛使用的数据基准和评估指标上的实验证明了所提出方法TFRnet-sf的出色性能,在总体峰值信噪比(peak signal to noise ratio,PSNR)和结构相似性(structural similarity,SSIM)提升的同时,插入中间帧的PSNR和SSIM也得到提升,在一定程度上缓和了插入的中间帧与原有帧之间PSNR和SSIM差距过大的问题。

关键词：时空视频超分辨率金字塔编码器-解码器网络时间特征插值空-时超分策略深度学习

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Bilayer separator enabling dendrite-free zinc anode with ultralong lifespan >5000 h

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Green Energy & Environment 2024年第4期9卷 771-776页

作者： Lu Wang Feifei Wang Zhe Ding Yingxin Liu ziyi Zhang Chunpeng yang Kian Ping Loh Quan-Hong yang Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhou350207China Nanoyang Group State Key Laboratory of Chemical EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering(Tianjin)Tianjin300072China Haihe Laboratory of Sustainable Chemical Transformations Tianjin300192China Department of Chemistry National University of Singapore117543Singapore Institute of Process Engineering Chinese Academy of SciencesBeijing100190China

Aqueous zinc(Zn)batteries with Zn metal anodes are promising clean energy storage devices with intrinsic safety and low ***,Zn dendrite growth severely restricts the use of Zn *** effectively suppress Zn dendrite growth,we propose a bilayer separator consisting of commercial butter paper and glassfiber *** dense cellulose-based butter paper(BP)with low zincophilicity and high mechanical properties prevents the pore-filling behavior of deposited Zn and related separator piercing,effectively suppressing the Zn dendrite *** a result,the bilayer separators endow the ZnjjZn symmetrical batteries with a superlong cycling life of Zn anodes(over 5000 h)at 0.5 mA cm^(-2) and the full batteries enhanced capacity retention,demonstrating the advancement of the bilayer separator to afford excellent cyclability of aqueous metal batteries.

关键词： Zn battery Bilayer separator Butter paper Zn metal anode Zn dendrite

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掘进巷道锚杆支护优化研究

煤矿机械 2024年第5期45卷 116-118页

作者：李迎富宋武杨子仪赵江梅曾凡刚安徽理工大学矿业工程学院安徽淮南232000

为保证煤炭开采环境的安全性,通过对巷道锚杆支护进行数值模拟来对巷道锚杆支护性能进行研究。针对某矿工作面风巷掘进期间保证巷道支护强度,防止和杜绝顶板事故,采用FLAC3D软件进行数值模拟分析,构建巷道锚杆支护数值模拟模型。模拟结... 详细信息

为保证煤炭开采环境的安全性,通过对巷道锚杆支护进行数值模拟来对巷道锚杆支护性能进行研究。针对某矿工作面风巷掘进期间保证巷道支护强度,防止和杜绝顶板事故,采用FLAC3D软件进行数值模拟分析,构建巷道锚杆支护数值模拟模型。模拟结果表明,在采用相同间排距时,可通过改变锚杆规格的方式来提升支护的性能,实现巷道锚杆支护优化。

关键词：巷道支护数值模拟支护优化 FLAC3D

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带皮芒果汁复合稳定剂配方的研究

辽宁科技学院学报 2024年第2期26卷 8-13页

作者：杨子逸王玉荣刘立成王子敬刘佳美辽宁科技学院生物医药与化学工程学院辽宁本溪117004

文章以带皮芒果果汁为原料,通过正交试验和响应面试验,研究果胶、海藻酸钠和羧甲基纤维钠等稳定剂对果汁稳定性的影响,结果表明:通过带皮芒果汁稳定性的正交试验可知,其最佳工艺条件参数是:羧甲基纤维素钠为0.20%,黄原胶为0.08%,海藻酸... 详细信息

文章以带皮芒果果汁为原料,通过正交试验和响应面试验,研究果胶、海藻酸钠和羧甲基纤维钠等稳定剂对果汁稳定性的影响,结果表明:通过带皮芒果汁稳定性的正交试验可知,其最佳工艺条件参数是:羧甲基纤维素钠为0.20%,黄原胶为0.08%,海藻酸钠为0.18%,果胶为0.14%,该条件下最佳悬浮稳定性为69.12%;响应面试验最佳工艺条件参数是:羧甲基纤维素钠为0.199%、果胶为0.1185%、海藻酸钠为0.163%、黄原胶为0.077%,在该条件下的悬浮稳定性为70.32%。响应面试验所得出的带皮芒果汁稳定性最佳工艺条件优于正交试验,且影响芒果稳定性的各因素顺序均为:海藻酸钠(C)>羧甲基纤维素钠(A)>果胶(D)>黄原胶(B)。

关键词：芒果果汁稳定性响应面试验

Light-controlled soft bio-microrobot

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Light(Science & Applications) 2024年第3期13卷 531-543页

作者： Jianyun Xiong Xing Li ziyi He yang Shi Ting Pan Guoshuai Zhu Dengyun Lu Hongbao Xin Guangdong Provincial Key Laboratory of Nanophotonic Manipulation Institute of NanophotonicsJinan University511443 GuangzhouChina

Micro/nanorobots hold exciting prospects for biomedical and even clinical applications due to their small size and high ***,it is still a big challenge to maneuver micro/nanorobots into narrow spaces with high deformability and adaptability to perform complicated biomedical ***,we report a light-controlled soft bio-microrobots(called“Ebot”)based on Euglena gracilis that are capable of performing multiple tasks in narrow microenvironments including intestinal mucosa with high controllability,deformability and *** motion of the Ebot can be precisely navigated via light-controlled polygonal flagellum ***,the Ebot shows highly controlled deformability with different light illumination duration,which allows it to pass through narrow and curved microchannels with high *** these features,Ebots are able to execute multiple tasks,such as targeted drug delivery,selective removal of diseased cells in intestinal mucosa,as well as photodynamic *** light-controlled Ebot provides a new bio-microrobotic tool,with many new possibilities for biomedical task execution in narrow and complicated spaces where conventional tools are difficult to access due to the lack of deformability and bio-adaptability.

关键词： narrow illumination curved

川射干提取物对肉鸡育雏期生长性能及免疫功能的影响

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畜禽业 2024年第5期35卷 1-5页

作者：张敏李思聪王斌杨子仪李旭廷梁歌四川省畜牧科学研究院四川成都610066 动物遗传育种四川省重点实验室四川成都610066

目的研究川射干(Iridis Tectori Rhizoma,ITR)提取物对肉鸡育雏期生长性能和免疫功能的影响。方法试验选择200只1日龄雏鸡,随机分为4组,每组5个重复,每个重复10只,分别为空白对照组(基础日粮)Ⅰ组以及试验药物组Ⅱ组、Ⅲ组、Ⅳ组(基础... 详细信息

目的研究川射干(Iridis Tectori Rhizoma,ITR)提取物对肉鸡育雏期生长性能和免疫功能的影响。方法试验选择200只1日龄雏鸡,随机分为4组,每组5个重复,每个重复10只,分别为空白对照组(基础日粮)Ⅰ组以及试验药物组Ⅱ组、Ⅲ组、Ⅳ组(基础日粮分别添加0.25%、0.5%、1.0%ITR)。试验期42 d。每2周测定1次料肉比、测算平均日采食量、平均日增重等生长性能指标和免疫器官指数、新城疫抗体水平等免疫功能指标。结果1~42日龄,与Ⅰ组相比,Ⅱ组试验鸡的平均日增重显著提高,3组试验组的鸡平均日增重差异不显著(p>0.05);试验期各阶段平均日采食量和料肉比各组差异均不显著(p>0.05),但随着试验组药物添加浓度的增加,平均日采食量、平均日增重呈下降趋势,料肉比呈上升趋势。与Ⅰ组相比,各试验组的胸腺器官指数差异均不显著(p>0.05);在28日龄时,与Ⅰ组相比,Ⅳ组的脾脏器官指数显著升高(p0.05);28日龄时Ⅱ组、Ⅲ组和Ⅳ组的法氏囊器官指数显著高于Ⅰ组(空白对照)(p0.05)。试验期各阶段,各组间新城疫抗体水平差异不显著(p>0.05);鸡新城疫抗体水平与时间呈负相关,试验组对鸡新城疫抗体水平的降低均有一定的抵抗作用,42日龄,试验组抗体水平均高于对照组。结论在饲料中添加ITR作为免疫调节剂可改善肉鸡免疫功能和生长性能,其中0.25%添加量对提高雏鸡生长性能效果最好,1%添加量对雏鸡脾脏指数的提高效果最明显。

关键词：川射干提取物肉鸡育雏期生长性能免疫功能

Controllable Synthesis of Co304 from Nanosize to Microsize with Large-Scale Exposure of Active Crystal Planes and Their Excellent Rate Capability in Supercapacitors Based on the Crystal Plane Effect

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Nano Research 2011年第7期4卷 695-704页

作者： Yu Wang ziyi Zhong yang Chen Cheng Theng Ng Jianyi Lin Institute of Chemical and Engineering Sciences 1 Pesek Road Jurong Island Singapore 627833

Co3O4 nanorods, nanobelts, nanosheets and cubic/octahedral nanoparticles have been successfully synthesized with tunable size from the nanoscale to the microscale, accompanied by a variation in the nature of the exposed crystal planes. The products are formed by thermal treatment of Co（CO3）05（OH）-0.11H2O nanorod, nanobelt, nanosheet and nanocubic/nanooctahedral precursors at 250 ℃. Detailed characterization, including X-ray diffraction （XRD）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, X-ray photoelectron spectroscopy （XPS）, and nitrogen adsorption and desorption isotherms, revealed that the as-prepared nanorods, nanobelts, and nanosheet Co3O4 samples are single crystalline and mesoporous in nature with a predominance of exposed high-energy （11-0） crystal planes. They exhibited excellent electrochemical properties in supercapacitors, showing higher capacitance and better rate capability than conventional cubic/octahedral COBO4 nanoparticles having exposed low-energy （100） and （111） planes. No decay in capacitance was observed when the scan rate was increased from 5 mV/s to 100 mV/s, or from I A/g to 10 A/g. The maximum value of the specific capacitance was calculated to be 162.8 F/g and the capacitance retention reached as high as 90%. Their excellent performance in supercapacitors is believed to result from the large-area exposure of active （110） crystal planes. The Co3O4 nanosheets showed the best performance due to their larger surface area and ability to provide a better pathway for charge transfer, and are promising electrode materials for application in practical supercapacitors.

关键词： Co3O4 mesoporous single crystal energy storage supercapacitors