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DGConv: A Novel Convolutional Neural Network Approach for Weld Seam Depth Image Detection

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Computers, Materials & Continua 2024年第2期78卷 1755-1771页

作者： pengchao li Fang Xu Jintao Wang Haibing Guo Mingmin liu Zhenjun Du State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang110016China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang110169China University of Chinese Academy of Sciences Beijing100049China Shenyang SIASUN Robot&Automation Co. Ltd.Shenyang110168China

We propose a novel image segmentation algorithm to tackle the challenge of limited recognition and segmentation performance in identifying welding seam images during robotic intelligent ***,to enhance the capability of deep neural networks in extracting geometric attributes from depth images,we developed a novel deep geometric convolution operator(DGConv).DGConv is utilized to construct a deep local geometric feature extraction module,facilitating a more comprehensive exploration of the intrinsic geometric information within depth ***,we integrate the newly proposed deep geometric feature module with the Fully Convolutional Network(FCN8)to establish a high-performance deep neural network algorithm tailored for depth image ***,we enhance the FCN8 detection head by separating the segmentation and classification *** enhancement significantly boosts the network’s overall detection ***,for a comprehensive assessment of our proposed algorithm and its applicability in real-world industrial settings,we curated a line-scan image dataset featuring weld *** dataset,named the Standardized linear Depth Profile(SLDP)dataset,was collected from actual industrial sites where autonomous robots are in ***,we conducted experiments utilizing the SLDP dataset,achieving an average accuracy of 92.7%.Our proposed approach exhibited a remarkable performance improvement over the prior method on the identical ***,we have successfully deployed the proposed algorithm in genuine industrial environments,fulfilling the prerequisites of unmanned robot operations.

关键词： Weld image detection deep learning semantic segmentation depth map geometric feature extraction

Three-Dimensional Self-assembled Hairball-like VS4 as High-Capacity Anodes for Sodium-Ion Batteries

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Nano-Micro Letters 2020年第3期12卷 142-154页

作者： Shuangshuang Ding Bingxin Zhou Changmiao Chen Zhao Huang pengchao li Shuangyin Wang Guozhong Cao Ming Zhang Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education Hunan Provincial Key Laboratory of Low‑Dimensional Structural Physics and DevicesSchool of Physics and ElectronicsHunan UniversityChangsha 410082People’s Republic of China College of Electrical Engineering and New Energy Three Gorges UniversityYichang 443002HubeiPeople’s Republic of China State Key Laboratory of Chemo/Biosensing and Chemometrics Provincial Hunan Key Laboratory for Graphene Materials and DevicesCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082People’s Republic of China Department of Materials Science and Engineering University of WashingtonSeattleWA 98195USA

Sodium-ion batteries(SIBs)are considered to be attractive candidates for large-scale energy storage systems because of their rich earth abundance and consistent ***,there are still challenges in developing desirable anode materials that can accommodate rapid and stable insertion/extraction of Na+and can exhibit excellent electrochemical ***,the self-assembled hairball-like VS4 as anodes of SIBs exhibits high discharge capacity(660 and 589 mAh g−1 at 1 and 3 A g−1,respectively)and excellent rate property(about 100%retention at 10 and 20 A g−1 after 1000 cycles)at room ***,the VS4 can also exhibit 591 mAh g−1 at 1 A g−1 after 600 cycles at 0°*** unlike traditional mechanism of VS4 for Na+storage was proposed according to the dates of ex situ characterization,cyclic voltammetry,and electrochemical kinetic *** capacities of the final stabilization stage are provided by the reactions of reversible transformation between Na2S and S,which were considered the reaction mechanisms of Na–S *** work can provide a basis for the synthesis and application of sulfur-rich compounds in fields of batteries,semiconductor devices,and catalysts.

关键词： VS4 Sodium-ion batteries Low-temperature batteries Reaction kinetics Na+storage mechanism

The Application of IPv6 Technology in Several Typical Industries and Its Application Innovation in the Public Security Industry

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Advances in Internet of Things 2022年第1期12卷 1-8页

作者： Fuyu Tao pengchao li Chongqing Police College Chongqing China

This paper discusses the advantages of IPv6 technology compared with IPv4, such as address capacity, automatic address allocation, mobile connection characteristics, security and confidentiality, quality of service, and multicast transmission. The key summary summarizes the application of IPv6 technology in the four industries of power, finance, home, and education. Since there is almost no application of IPv6 technology in the public security industry in the previous literature, the author proposes the application innovation of IPv6 technology in the public security industry according to his own industry. IPv6 technology can be applied to the work communication, information exchange, case investigation, and social security management of public security departments, which helps to improve the level of public security work, the quality of the people’s police, and the efficiency of public security affairs, thereby improving the safety and satisfaction of the general public. Spend. It has a certain reference significance to make a great contribution to reducing the crime rate, creating a harmonious social environment, and truly realizing the integration of police and civilians.

关键词： IPv6 Technical Advantages Industry Applications

冲击激励下含限位器的气囊-船用旋转机械系统的动力学特性分析

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振动与冲击 2020年第5期39卷 183-187,193页

作者：李鹏超李明西安科技大学理学院西安710054

主要研究了冲击激励下含限位器的气囊-旋转机械系统的动力学特性。首先,考虑了轴承的非线性油膜力和转子的不平衡力等因素,建立了在冲击激励下气囊-旋转机械系统的非线性动力学模型;然后,采用数值模拟的方法分析了冲击激励下,限位器对气... 详细信息

主要研究了冲击激励下含限位器的气囊-旋转机械系统的动力学特性。首先,考虑了轴承的非线性油膜力和转子的不平衡力等因素,建立了在冲击激励下气囊-旋转机械系统的非线性动力学模型;然后,采用数值模拟的方法分析了冲击激励下,限位器对气囊-旋转机械系统动力学特性的影响,讨论了在限位器不同刚度比、安装间隙、阻尼比等参数下气囊-旋转机械系统的动力学响应。结果表明:限位器的刚度和安装间隙对冲击激励下系统的最大相对位移和绝对加速度有较大影响,而阻尼对其影响会随着刚度比的增大而减小。

关键词：气囊-旋转机械系统限位器冲击激励非线性动力学

富水粉细砂层联络通道顶管法施工地表沉降分析

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郑州大学学报（工学版） 2025年第1期46卷 67-74页

作者：李晓龙栗鹏超刘小锋孙立军郭长龙何况郑州大学水利与交通学院河南郑州450001 中铁十四局集团有限公司山东济南250101 郑州地铁集团有限公司河南郑州450000

为研究富水粉细砂层地铁联络通道顶管法施工对地表沉降的影响,对郑州地铁12号线08工区埋深15 m、长7.5 m的联络通道在顶管法施工过程中的地表沉降进行了监测,并结合“地层-主隧道-内支撑-联络通道”体系三维数值模型,深入分析了顶管掘... 详细信息

为研究富水粉细砂层地铁联络通道顶管法施工对地表沉降的影响,对郑州地铁12号线08工区埋深15 m、长7.5 m的联络通道在顶管法施工过程中的地表沉降进行了监测,并结合“地层-主隧道-内支撑-联络通道”体系三维数值模型,深入分析了顶管掘进过程中地表沉降的时空演化规律。结果表明:地表沉降量随着顶管机的推进逐渐增大,顶推到位后达到最大沉降值,其中台车就位、始发破洞及接收破洞阶段产生的沉降增量明显大于其他开挖阶段,设备拆除后,受卸载作用影响,地层产生一定量回弹,沉降值减小;地表沉降曲面呈漏斗状,沿垂直于联络通道中心线方向左右对称,沿平行垂直于中心线方向不对称,最大沉降值位于纵向距离联络通道中心靠近始发端3 m处;联络通道顶管法施工对地表横向影响范围更大,地表沉降集中发生区域近似椭圆形,其长轴垂直于联络通道中心线。

关键词：联络通道顶管法数值模拟现场监测地表沉降

Graphene-controlled FeSe nanoparticles embedded in carbon nanofibers for high-performance potassium-ion batteries

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Science China Materials 2022年第7期65卷 1751-1760页

作者： Yi Luo Hongcheng He pengchao li Yong Cai Ming Zhang Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics&DevicesHunan Joint International Laboratory of Advanced Materials and Technology for Clean EnergySchool of Physics and ElectronicsHunan UniversityChangsha 410082China

Iron selenide(FeSe)has drawn attention due to its resource-rich,environment-friendly,and low toxicity ***,FeSe,like many transition metal selenides,has some limitations,including low conductivity and massive volume expansion during charge and ***,graphene oxide-controlled FeSe nanoparticles embedded in carbon nanofibers were created using graphene oxide as an additive in the electrospinning *** composites as the anodes for potassium-ion batteries(KIBs)can maintain an excellent capacity of 409 mA h g^(-1)at a current density of 0.2 A g^(-1) after 400 cycles with the capacity retention of nearly 100%.Even at 2 A g^(-1),the capacity can maintain 200 mA h g^(-1) after 1700 cycles with the capacity retention of about 80.9%.It was discovered that the addition of graphene oxide can reduce the diameter of FeSe nanoparticles and cause most nanoparticles to be wrapped in carbon fibers,which can relieve volume expansion and improve composite ***,the graphene and carbon fiber matrix can result in high K-ion diffusion kinetics,improved material conductivity,and enhanced pseudo-capacitance performance,endowing composites with excellent cycling and rate *** strategy of using graphene oxide to control the microstructure and improve the conductivity of carbon fiber composites may provide a new idea for future application and development of carbon fibers in other energy devices.

关键词： graphene-controlled stability rate performance potassium-ion batteries

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重塑历史时间:当下主义的内在危机及其超越

天津社会科学 2024年第2期2卷 164-173页

作者：李鹏超山西大学历史文化学院

20世纪后半叶以降,在时代变化与学术革新的双重影响下,法国历史学家弗朗索瓦·阿赫托戈提出当下主义来指示现代社会的时间危机,其特征表现为过去和未来的双重缺失,转而追求一种永恒的当下。当下主义的提出基于法国的政治社会经验,在一... 详细信息

20世纪后半叶以降,在时代变化与学术革新的双重影响下,法国历史学家弗朗索瓦·阿赫托戈提出当下主义来指示现代社会的时间危机,其特征表现为过去和未来的双重缺失,转而追求一种永恒的当下。当下主义的提出基于法国的政治社会经验,在一定程度上表现出局限性。倘若结合人类世、生态环境史视角加以考察,在一定程度上可拓展当下主义概念的外延,为超越其限度提供一种借鉴。然而,无论是当下主义还是人类世、生态环境史,都蕴含着一种潜在的未来危机。面对这种时间危机,以历史伦理学、生态时间学、星球史等视角思考历史未来或许可为历史理论提供一种可能性的途径。

关键词：历史时间当下主义人类世生态环境史历史未来

共轭亚油酸对脂质代谢和身体成分组成影响的研究进展

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食品科学 2022年第7期43卷 373-380页

作者：李鹏超顾学艳北京体育大学艺术学院北京100084 国立群山大学体育学院韩国全罗北道群山54150

共轭亚油酸(conjugated linoleic acid,CLA)因具有促进脂肪分解、改善体能等作用,被广泛用于非运动和运动人群饮食结构中。CLA通过与过氧化物酶体增殖物激活受体(peroxisome proliferators-activated receptors,PPAR)相互作用,增强呼吸... 详细信息

共轭亚油酸(conjugated linoleic acid,CLA)因具有促进脂肪分解、改善体能等作用,被广泛用于非运动和运动人群饮食结构中。CLA通过与过氧化物酶体增殖物激活受体(peroxisome proliferators-activated receptors,PPAR)相互作用,增强呼吸链解偶联蛋白(uncoupling protein-1,UCP-1)表达并提高肉碱-棕榈油转移酶-1(carnitine-palmoil-transferase-1,CPT-1)活性,促进脂质代谢,改变身体成分。目前,关于CLA减脂效果及其所带来的副作用仍有争论。本文将CLA目标人群分为非运动训练类和运动训练类,分别进行CLA减脂效果比较。对比发现,CLA的补充对人体脂质代谢和人体成分组成的影响受人种、性别、年龄、健康状况、身体素质、饮食结构、服用剂量与服用时间等多重因素影响。对于与人类亲缘关系较近的啮齿类动物而言,其中CLA对小鼠降脂作用最明显,且运动结合CLA补充减脂效果更佳。考虑到CLA补充带来的毒副作用,食用天然富含CLA的食物可能是控制肥胖的较好选择。

关键词：共轭亚油酸脂质代谢身体成分组成分子机制运动训练

西方史学思想中的历史距离——从时间距离到“距离效应”

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史学月刊 2021年第11期 118-127页

作者：李鹏超首都师范大学历史学院北京100089

距离通常涉及时间和空间两个方面。在历史学科内,历史距离通常指涉过去与现在、事实与叙事之间的关系。文艺复兴伊始,历史距离伴随着对时间的发现而产生。它塑造了不同于中世纪的现代历史意识,并成为支配现代史学研究的重要因素。然而,... 详细信息

距离通常涉及时间和空间两个方面。在历史学科内,历史距离通常指涉过去与现在、事实与叙事之间的关系。文艺复兴伊始,历史距离伴随着对时间的发现而产生。它塑造了不同于中世纪的现代历史意识,并成为支配现代史学研究的重要因素。然而,这种以时间维度为基础的距离观念,忽视了历史距离内涵和价值的丰富性、复杂性。加拿大历史学家马克·菲利普斯在重新思考历史距离的基础上,把距离当作历史表现中一种介质的参与形式,提出了包含形式、情感、意识形态和认知的"距离效应"在内的多种维度来处理过去与现在的关系。这不仅丰富了历史距离的内涵,同时也拓宽了历史认知的路径。笔者在此基础上,尝试以微观史为例来对此进行具体分析。

关键词：历史距离距离效应介质微观史马克·菲利普斯