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Journal of Bioresources and Bioproducts 2022年第1期7卷 63-72页

作者： Lansheng Wei Weijie Deng Shanshan Li zhengguo wu Jihai Cai Jiwen Luo State Key Laboratory of Pulp&Paper Engineering South China University of TechnologyGuangzhou 510640China School of Chemistry and Environment South China Normal UniversityGuangzhou 510006China

The application of porous carbon microspheres derived from pure biomass in supercapacitors is restricted due to their limited reactive *** owns a combination of redox Faradic surface with good metallic conductivity and hydrophilicity,which assists to obtain high pseudocapaci-tance and energy ***,Ti_(3)C_(2)T_(x)MXene was introduced to chitosan-based porous carbon microsphere(CPCM)to fabricated sandwich-like structure(CPCM/MXene)through electrostatic *** Ti_(3)C_(2)T_(x)protected the spherical structure of ***,CPCM hindered the reaggregation of Ti_(3)C_(2)T_(x)by inserting in the Ti_(3)C_(2)T_(x)layers,promoting the electrolyte migra-tion *** synergistic effect endowed CPCM/MXene high specific capacitance of 362 F/g at current density of 0.5 A/g and acceptable cycling stability with 93.87%capacitance retention at a high current density of 10 A/g after 10,000 ***,CPCM/MXene displayed a high energy density of 27.8 W/(h•kg)at 500.0 W/kg of power *** satisfactory perfor-mances prove that combining Ti_(3)C_(2)T_(x)MXene nanosheets with porous carbon microspheres is a considering method to construct a new generation electrode material of supercapacitor.

关键词： Ti_(3)C_(2)T_(x)MXene Chitosan Porous carbon sphere Sandwich-like structure Supercapacitor

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一种面向人工智能辅助诊断的偏振皮肤镜系统

长春理工大学学报（自然科学版） 2024年第2期47卷 114-120页

作者：武正国庞春颖张茜然孙嘉灵长春理工大学生命科学技术学院长春130022

传统皮肤镜检查高度依赖医生的临床经验,并且皮肤镜图像本身的复杂性给临床诊断提出了巨大的挑战。针对以上情况,研发出一款带有人工智能辅助诊断功能的偏振皮肤镜系统。该系统使用偏振照明成像技术,经过目镜系统放大,由可连续工作的工... 详细信息

传统皮肤镜检查高度依赖医生的临床经验,并且皮肤镜图像本身的复杂性给临床诊断提出了巨大的挑战。针对以上情况,研发出一款带有人工智能辅助诊断功能的偏振皮肤镜系统。该系统使用偏振照明成像技术,经过目镜系统放大,由可连续工作的工业相机将大量实时抓拍的皮肤镜裸数据图像传输至上位机。通过上位机内置的图像处理模块将图像进行预处理,然后通过训练好的卷积神经网络VGG16将皮肤镜图像分类。最后,用户可以通过皮肤镜诊断平台查看诊断结果。此系统可以更加清晰有效地观察深层皮肤组织病变组织形态,由系统采集的皮肤镜图像的分类准确性达到93.6%,可用于临床诊疗。

关键词：皮肤镜偏振光皮肤镜图像人工智能辅助诊断

A Review of Anode Materials for Dual‑Ion Batteries

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Nano-Micro Letters 2024年第11期16卷 618-674页

作者： Hongzheng wu Shenghao Luo Hubing Wang Li Li Yaobing Fang Fan Zhang Xuenong Gao zhengguo Zhang Wenhui Yuan School of Chemistry and Chemical Engineering Guangdong ProvinceSouth China University of TechnologyGuangzhou 510641People’s Republic of China Zhuhai Modern Industrial Innovation Research Institute of South China University of Technology Zhuhai 519125Guangdong ProvincePeople’s Republic of China School of Environment and Energy Guangdong ProvinceSouth China University of TechnologyGuangzhou 510641People’s Republic of China

Distinct from"rockingchair"lithium-ion batteries(LIBs),the unique anionic intercalation chemistry on the cathode side of dual-ion batteries(DIBs)endows them with intrinsic advantages of low cost,high voltage,and ecofriendly,which is attracting widespread attention,and is expected to achieve the next generation of large-scale energy storage *** the electrochemical reactions on the anode side of DIBs are similar to that of LIBs,in fact,to match the rapid insertion kinetics of anions on the cathode side and consider the compatibility with electrolyte system which also serves as an active material,the anode materials play a very important role,and there is an urgent demand for rational structural design and performance optimization.A review and summarization of previous studies will facilitate the exploration and optimization of DIBs in the ***,we summarize the development process and working mechanism of DIBs and exhaustively categorize the latest research of DIBs anode materials and their applications in different battery ***,the structural design,reaction mechanism and electrochemical performance of anode materials are briefly ***,the fundamental challenges,potential strategies and perspectives are also put *** is hoped that this review could shed some light for researchers to explore more superior anode materials and advanced systems to further promote the development of DIBs.

关键词： Dual-ion batteries Anode Carbonaceous materials Metallic materials Organic materials Optimization strategies

高校思想政治教育系统整合:理论分析、现实诉求与优化路径

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思想教育研究 2022年第11期 50-56页

作者：吴正国侯勇江南大学马克思主义学院江苏无锡214122

高校思想政治教育系统在分化发展中不断走向精细化、专业化的同时,也在一定程度上造成了系统内部的“离散”问题,影响系统功能整体涌现。推进高校思想政治教育系统整合,要坚持问题导向,从知识体系科学化、学科体系规范化、工作体系协同... 详细信息

高校思想政治教育系统在分化发展中不断走向精细化、专业化的同时,也在一定程度上造成了系统内部的“离散”问题,影响系统功能整体涌现。推进高校思想政治教育系统整合,要坚持问题导向,从知识体系科学化、学科体系规范化、工作体系协同化以及环境生态化等维度进行整合优化,整体性推进高校思想政治教育系统内部各子系统协同耦合,提升教育实效。

关键词：思想政治教育系统系统思维系统整合

采用随机脉宽调制技术降低电力有源滤波器开关谐波

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电工技术学报 2010年第8期25卷 105-109,115页

作者：李辉吴正国海军工程大学电气工程学院武汉430033

近年来,电力有源滤波器广泛用于抑制电网谐波、提高电力系统电能质量。对于电网而言,基于脉宽调制技术的有源滤波器等效为高频谐波源,产生开关频率及其倍频成分谐波,引发电磁兼容性问题。随机脉宽调制技术将开关频率随机化,使得开关频... 详细信息

近年来,电力有源滤波器广泛用于抑制电网谐波、提高电力系统电能质量。对于电网而言,基于脉宽调制技术的有源滤波器等效为高频谐波源,产生开关频率及其倍频成分谐波,引发电磁兼容性问题。随机脉宽调制技术将开关频率随机化,使得开关频率处幅值较大的离散谐波扩展为一定带宽内幅值较小的连续谐波,从而降低开关谐波幅值。论文选取随机脉宽调制技术用于抑制有源滤波器开关谐波,并在此基础上简化电力有源滤波器输出滤波环节,减少设备成本,降低控制系统设计难度。详细分析随机信号对开关函数功率谱密度特性的影响,并据此提出随机脉宽调制技术的实用化设计方法。仿真和实验结果验证了论文方案的有效性。

关键词：有源滤波器电磁兼容电磁干扰随机脉宽调制双傅里叶变换

Landuse/landcover changes in Zhangye oasis of Hexi Corridor

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Journal of Geographical Sciences 2003年第1期13卷 71-75页

作者： MENG Jijun,wu Xiuqin,LI zhengguo(Department of Urban and Environmental Scien ce, Peking University, Laboratory of Analysis and Simulation of Earth Surface P rocesses, the Ministry of Education, Beijing 100871, China) Department of Urban and Environmental Science Peking University Laboratory of Analysis and Simulation of Earth Surface Processes the Ministry of Education Beijing China

Taking two f alse color composite Landsat 5 TM (Thematic Mapper) images of band 4,3,2 taken in 1995 and 2000 as data resources, this paper carried out study on LUCC of Zhan gye oasis in recent five years by interpretation according to land reso urces classification system of 1:100,000 Resources and Environmental Data base of the Chinese Academy of Sciences. The results show that great changes have taken place in landuse/landcover in Zhangye oasis since 1 995: (1) Changes of landuse structure show that cropland and land for urban c onstruction and built-up area increased, on the contrary, water area an d grassland decreased. These changes reflect the deterioration of eco-e nvironment and the acceleration of urbanization, and also indicate the problems existing in the arrangement of water and land resources betw een the upper and lower reaches of the Heihe River. (2) Regional diff erences of landuse/landcover are evident, characterized by following asp ects: in Sunan County located in Qilian Mountain area, unused land an d grassland decreased, but cropland and land for urban construction an d built-up area increased. In Minle and Shandan counties located in f oothills, unused land, water area and cropland decreased, but grassland and land for urban construction and built-up area increased. In Zhan gye City, Linze County and Gaotai County located in plain area of th e middle reaches of the Heihe River, unused land, water area and gra ssland decreased, while woodland, cropland and land for urban construction and built-up area increased.

关键词： landuse/landcover changes (LUCC) Zhangye oasi s Hexi Corridor

Ballistic performances of the hourglass lattice sandwich structures under high-velocity fragments

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Defence Technology（防务技术） 2024年第1期31卷 312-325页

作者： He-xiang wu Jia Qu Lin-zhi wu Key Laboratory of Advanced Ship Materials and Mechanics College of Aerospace and Civil EngineeringHarbin Engineering UniversityHarbin150001China School of Civil Engineering Northeast Forestry UniversityHarbin150040China

In this paper,the numerical simulation method is used to study the ballistic performances of hourglass lattice sandwich structures with the same mass under the vertical incidence of *** is paid to elucidating the influences of rod cross-section dimensions,structure height,structure layer,and rod inclination angle on the deformation mode,ballistic performances,and ability to change the ballistic direction of *** results show that the ballistic performances of hourglass lattice sandwich structures are mainly affected by their structural *** this respect,structural parameters optimization of the hourglass lattice sandwich structures enable one to effectively improve their ballistic limit velocity and,consequently,ballistic performances.

关键词： Hourglass lattice sandwich structures Ballistic performances high-velocity Finite element analysis

Resilience-incorporated seismic risk assessment of precast concrete frames with“dry”connections

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Earthquake Engineering and Engineering Vibration 2024年第2期23卷 403-425页

作者： wu Chenhao Tang Yuchuan Cao Xuyang wu Gang Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education Nanjing 211102China Department of Civil and Environmental Engineering University of CaliforniaLos AngelesCA 90095USA School of Civil Engineering Southeast UniversityNanjing 211102China College of Civil and Transportation Engineering Hohai UniversityNanjing 210024China

A resilience-incorporated risk assessment framework is proposed and demonstrated in this study to manifest the advantageous seismic resilience of precast concrete frame(PCF)structures with“dry”connections in terms of their low damage and rapid *** framework integrates various uncertainties in the seismic hazard,fragility,capacity,demand,loss functions,and post-earthquake *** this study,the PCF structures are distinguished from ordinary reinforced concrete frame(RCF)structures by characterizing multiple limit states for the PCF based on its unique damage ***,probabilistic story-wise pushover analyses are performed to yield story-wise capacities for the predefined limit *** the seismic resilience analysis,a step-wise recovery model is proposed to idealize the functionality recovery process,with separate considerations of the repair and non-repair *** recovery model leverages the economic loss and downtime to delineate the stochastic post-earthquake recovery curves for the resilience loss *** such,contingencies in the probabilistic post-earthquake repairs are incorporated and the empirical judgments on the recovery parameters are largely *** proposed framework is demonstrated through a comparative study between two“dry”connected PCFs and one RCF designed as alternative structural systems for a prototype *** results from the risk quantification indicate that the PCFs show reduced loss hazards and lower expected losses relative to the ***,the PCF equipped with energy dissipation devices at the“dry”connections largely reduces the expected economic loss,downtime,and resilience loss by 29%,56%,and 60%,respectively,compared to the RCF.

关键词： precast concrete frame non-emulative precast system seismic resilience seismic risk functional recovery

A GRID-BASED CLUSTERING ALGORITHM WITH REFERENTIAL VALUE OF PARAMETERS

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A GRID-BASED CLUSTERING ALGORITHM WITH REFERENTIAL VALUE OF ...

New findings on the influence of El Nino events on tropical cyclone formation

2007中国宁波国际计算机科学与技术学术大会

作者： Zhou Yantao Yi Xingdong wu zhengguo School of Computer & Communication Hunan University Information & Electrical Engineering College Naval Engineering University

By means of calculating density threshold data,some effective referential values of parameters were worked out and provided for users,and a new kind of clustering algorithm called GRPC was *** the help of these referential values of parameters,we can not only cluster general data but also segregate high-density clusters from low-density *** problem of lower quality of clusters in traditional grid clustering algorithm which usually ignored the distribution of data when meshing was *** results indicated that this new algorithm can differentiate between outliers or noises and clusters effectively and treat clusters of arbitrary *** new algorithm also displayed a good clustering quality.

关键词： Grid Density threshold Clustering algorithm Data mining

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Science China Earth Sciences 2024年第3期67卷 892-893页

作者： Liguang wu Department of Atmospheric and Oceanic Sciences Institute of Atmospheric SciencesFudan UniversityShanghai 200438China

Tropical cyclones typically form over warm tropical and subtropical ocean surfaces, as their formation and intensification rely primarily on the energy provided by the ocean. Pioneering research by Gray (1968) revealed that the formation of tropical cyclones requires the sea surface temperature (SST) to be no less than 26.5℃. Consequently, SST is commonly recognized as a crucial parameter among the environmental factors influencing tropical cyclone formation(Gray, 1979;Emanuel and Nolan, 2004).

关键词： tropical cyclone ocean