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Innovations in metallurgical and materials processes:advancing liquid theory and honoring ***-jie guo's contributions to physical chemistry in metallurgy

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Journal of Iron and Steel Research International 2024年第1期31卷 1-2页

作者： Shuai Liu Jing guo Han-jie guo School of Artificial Intelligence Beijing Technology and Business UniversityBeijing100048China School of Metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing100083China

Spanning three decades,***-jie guo's research group has dedicated itself to exploring the fundamental theories and practical applications of physical chemistry within the realm of *** under the assumption that molecul... 详细信息

关键词： chemistry liquid complexes

基于Isomap和支持向量机算法的俯视群养猪个体识别

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农业工程学报 2016年第3期32卷 182-187页

作者：郭依正朱伟兴马长华陈晨江苏大学电气信息工程学院镇江212013 南京师范大学泰州学院泰州225300

针对俯视群养猪视频序列,提出了一种利用机器视觉技术对猪个体进行识别的方法。首先对采集的俯视群养猪视频序列进行前景检测与目标提取,获得各单只猪个体,其后建立训练样本,提取猪个体颜色、纹理及形状特征,组合构建表征猪个体的特征向... 详细信息

针对俯视群养猪视频序列,提出了一种利用机器视觉技术对猪个体进行识别的方法。首先对采集的俯视群养猪视频序列进行前景检测与目标提取,获得各单只猪个体,其后建立训练样本,提取猪个体颜色、纹理及形状特征,组合构建表征猪个体的特征向量,接着对组合特征利用Isomap算法做特征融合,在最大程度保留有效识别信息的基础上降低特征维数,最后利用优化核函数的支持向量机分类器进行训练与识别。试验选取了900帧图像,试验结果表明该文所提方法切实有效,猪个体最高识别率为92.88%。该文从机器视觉角度探索了俯视群养猪的个体识别,有别于传统的RFID猪个体识别,该研究为无应激的猪个体识别提供了新思路,也为进一步探索群养猪个体行为分析等奠定了基础。

关键词：动物特征提取支持向量机 Isomap算法群养猪个体识别

基于LLE特征降维及改进SVM的肝脏图像识别

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实验室研究与探索 2022年第6期41卷 67-70页

作者：郭依正倪红军南京师范大学泰州学院江苏泰州225300

为了提高肝脏CT图像正常和异常的识别率,提出了一种基于LLE特征降维及改进SVM的肝脏图像识别方法。在对采集的CT图提取感兴趣区域的颜色特征、形状特征和纹理特征,利用标准差变换和极差转换把这些特征规格化到0与1之间后,采用LLE算法对... 详细信息

为了提高肝脏CT图像正常和异常的识别率,提出了一种基于LLE特征降维及改进SVM的肝脏图像识别方法。在对采集的CT图提取感兴趣区域的颜色特征、形状特征和纹理特征,利用标准差变换和极差转换把这些特征规格化到0与1之间后,采用LLE算法对特征数据进行降维融合,并使用改进的SVM对待识别图像进行分类。实验结果表明,对多类特征进行降维融合比仅用单类特征能更好地表达感兴趣区域的内容信息,LLE算法较其他流形学习算法表现出更强的鲁棒性,改进的混合核函数SVM较单一核函数SVM识别率要高。该方法可以为医生辅助诊断提供参考。

关键词：肝脏图像特征提取局部线性嵌入支持向量机

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用户导向的信息资源共享系统绩效评估探讨

国家图书馆学刊 2010年第3期19卷 18-22页

作者：肖希明郭以正武汉大学信息管理学院武汉大学信息管理学院图书馆学系

分析信息资源共享系统绩效评估的不同导向,在借鉴国外信息资源共享系统绩效评估的有益经验,分析用户对信息资源共享系统需求特点的基础上,探讨以用户为导向,从资源保障、资源可获知性、资源可检索性、资源可获得性和资源获取成本五个方... 详细信息

分析信息资源共享系统绩效评估的不同导向,在借鉴国外信息资源共享系统绩效评估的有益经验,分析用户对信息资源共享系统需求特点的基础上,探讨以用户为导向,从资源保障、资源可获知性、资源可检索性、资源可获得性和资源获取成本五个方面构建信息资源共享系统绩效评估指标体系的可能性。参考文献11。

关键词：用户导向信息资源共享系统绩效评估

Emerging direct current triboelectric nanogenerator for high-entropy mechanical energy harvesting

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Science China(Technological Sciences) 2024年第5期67卷 1297-1316页

作者： CHEN Jie guo RuiLong guo HengYu College of Physics and Electronic Engineering Chongqing Normal UniversityChongqing 401331China Department of Applied Physics Chongqing UniversityChongqing 401331China

In the era of the Internet of Things(IoT),the provision of sustainable power to distributed,mobile,and low-power-consumption electronic devices is a critical *** overcome this challenge,the triboelectric nanogenerator(TENG),a highly efficient high-entropy mechanical energy harvesting device,was developed in *** device enables the direct conversion of irregular and low-frequency mechanical energy into pulsed alternating current(AC)***,the incompatibility of most electronic devices with AC signals necessitates rectifier circuits or generators that deliver direct current(DC)*** recent years,DC-TENGs have undergone extensive development,achieving significant milestones in various application fields while also facing crucial challenges that require *** this review,three categories of DC-TENG devices with distinct operating mechanisms are comprehensively explored:multiphase coupling,mechanical rectification,and air *** typical structures and working mechanisms are thoroughly discussed,and specific output performance limitations,along with corresponding optimization strategies,are ***,the applications of DC-TENGs in various scenarios are ***,the challenges faced by DC-TENGs and potential solutions are analyzed to guide further advancements in this technology.

关键词： TENG direct current working mechanisms output performance limitations optimization strategies

Physicochemical principles of hydrogen metallurgy in blast furnace

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Journal of Iron and Steel Research International 2024年第1期31卷 46-63页

作者： Han-jie guo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing100083China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials Beijing100083China

Based on the stoichiometric method and the free energy minimization method,an ideal model for the reduction of iron oxides by carbon and hydrogen under blast furnace conditions was established,and the reduction efficiency and theoretical energy consumption of the all-carbon blast furnace and the hydrogen-rich blast furnace were *** results show that after the reduction reaction is completed at the bottom of the blast furnace,the gas produced by reduction at 1600℃still has a certain excessive reduction capacity,which is due to the hydrogen brought in by the hydrogen-rich blast as well as the excess carbon monoxide generated by the reaction of the coke and the oxygen brought in by the *** the process of the gas with excessive reduction capacity rising from the bottom of the blast furnace and gas reduction process,the excessive reduction capacity of the gas gradually decreases with the increase in the dydrogen content in the *** the all-carbon blast furnace,the excess gas reduction capacity is the strongest,and the total energy consumption per ton of iron reduction is the *** shows that,for the current operation mode of the blast furnace,adding hydrogen in the blast furnace cannot reduce the consumption of carbon required for reduction per ton of iron,but rather increases the consumption of carbon.

关键词： Hydrogen metallurgy Excess gas reduction capacity Theoretical energy consumption Hydrogen-rich blast furnace Thermodynamic model Gibbs minimum free energy method

Control Strategies for Digital Twin Systems

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IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 170-180页

作者： guo-Ping Liu IEEE the Center for Control Science and Technology Southern University of Science and TechnologyShenzhen 518055China

With the continuous breakthrough in information technology and its integration into practical applications, industrial digital twins are expected to accelerate their development in the near future. This paper studies various control strategies for digital twin systems from the viewpoint of practical *** make full use of advantages of digital twins for control systems, an architecture of digital twin control systems, adaptive model tracking scheme, performance prediction scheme, performance retention scheme, and fault tolerant control scheme are proposed. Those schemes are detailed to deal with different issues on model tracking, performance prediction, performance retention, and fault tolerant control of digital twin systems. Also, the stability of digital twin control systems is analysed. The proposed schemes for digital twin control systems are illustrated by examples.

关键词： Digital twin control systems fault tolerant control model tracking performance prediction performance retention

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从高中历史新课程模块的特点看教学方式嬗变

江苏教育学院学报（社会科学版） 2005年第5期21卷 107-109页

作者：姚国平江苏省仪征中学江苏仪征211900

本文通过对高中新课程历史科目模块特点的解读,来探析历史新课程实施的前瞻性作用。并在此基础上,对高中历史新课程教学方式的嬗变,进行理论层面和实践层面的相关思考。

关键词：高中历史新课程模块教学方式

Configuration Synthesis and Grasping Performance Analysis of Multi-Loop Coupling Capture Mechanism for Launch and Recovery of Torpedo-Shaped Autonomous Underwater Vehicle

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China Ocean Engineering 2024年第3期38卷 453-466页

作者： ZHANG guo-xing XIA Xin-lu guo Jin-wei School of Mechanical Engineering Jiangsu University of Science and TechnologyZhenjiang 212100China

Research of capture mechanisms with strong capture adaptability and stable grasp is important to solve the problem of launch and recovery of torpedo-shaped autonomous underwater vehicles(AUVs).A multi-loop coupling capture mechanism with strong adaptability and high retraction rate has been proposed for the launch and recovery of torpedo-shaped AUVs with different morphological ***,the principle of capturing motion retraction is described based on the appearance characteristics of torpedo-shaped AUVs,and the configuration synthesis of the capture mechanism is carried out using the method of constrained chain ***,the screw theory is employed to analyze the degree of freedom(DoF)of the capture ***,the 3D model of the capture mechanism is established,and the kinematics and dynamics simulations are carried *** with the capture orientation requirements of the capture mechanism,the statics and vibration characteristics analyses are carried ***,considering the capture process and the underwater working environment,the motion characteristics and hydraulics characteristics of the capture mechanism are ***,a principle prototype is developed and the torpedo-shaped AUVs capture experiment is *** work provides technical reserves for the research and development of AUV capture special equipment.

关键词： capture mechanism torpedo-shaped AUVs configuration synthesis launch and recovery grasping performance analysis