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数学杂志 2010年第5期30卷 943-947页

作者：郑绿洲湖北师范学院数学与统计学院湖北黄石435002

本文讨论了一类线性时变微分代数系统的稳定性.利用Rosenbrock系统受限等价性理论,直接由方程系数给出了一些稳定性的充分条件.

关键词：微分方程微分代数系统稳定性

Joint Probabilistic Scheduling and Resource Allocation for Wireless Networked Control Systems

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IEEE/CAA Journal of Automatica Sinica 2025年第1期12卷 258-260页

作者： Meng zheng lei Zhang Wei liang IEEE the State Key laboratory of Robotics and the Key laboratory of Networked Control Systems Shenyang Institute of Automation Chinese Academy of Sciences the University of Chinese Academy of Sciences

Dear Editor,This letter presents a joint probabilistic scheduling and resource allocation method(PSRA) for 5G-based wireless networked control systems(WNCSs). As a control-aware optimization method, PSRA minimizes the linear quadratic Gaussian(lQG) control cost of WNCSs by optimizing the activation probability of subsystems, the number of uplink repetitions, and the durations of uplink and downlink phases. Simulation results show that PSRA achieves smaller lQG control costs than existing works.

关键词： Networked control systems

The role of axon guidance molecules in the pathogenesis of epilepsy

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Neural Regeneration Research 2025年第5期20卷 1244-1257页

作者： zheng liu Chunhua Pan Hao Huang Department of Neurology Affiliated Hospital of Zunyi Medical UniversityZunyiGuizhou ProvinceChina

Current treatments for epilepsy can only manage the symptoms of the condition but cannot alter the initial onset or halt the progression of the disease. Consequently, it is crucial to identify drugs that can target novel cellular and molecular mechanisms and mechanisms of action. Increasing evidence suggests that axon guidance molecules play a role in the structural and functional modifications of neural networks and that the dysregulation of these molecules is associated with epilepsy susceptibility. In this review, we discuss the essential role of axon guidance molecules in neuronal activity in patients with epilepsy as well as the impact of these molecules on synaptic plasticity and brain tissue remodeling. Furthermore, we examine the relationship between axon guidance molecules and neuroinflammation, as well as the structural changes in specific brain regions that contribute to the development of epilepsy. Ample evidence indicates that axon guidance molecules, including semaphorins and ephrins, play a fundamental role in guiding axon growth and the establishment of synaptic connections. Deviations in their expression or function can disrupt neuronal connections, ultimately leading to epileptic seizures. The remodeling of neural networks is a significant characteristic of epilepsy, with axon guidance molecules playing a role in the dynamic reorganization of neural circuits. This, in turn, affects synapse formation and elimination. Dysregulation of these molecules can upset the delicate balance between excitation and inhibition within a neural network, thereby increasing the risk of overexcitation and the development of epilepsy. Inflammatory signals can regulate the expression and function of axon guidance molecules, thus influencing axonal growth, axon orientation, and synaptic plasticity. The dysregulation of neuroinflammation can intensify neuronal dysfunction and contribute to the occurrence of epilepsy. This review delves into the mechanisms associated with

关键词： axon guidance drug-resistant epilepsy epilepsy nerve regeneration nervous system diseases neural pathways neuroinflammatory diseases neuronal plasticity neurons synaptic remodeling

Antibiotic exposure alters the honeybee gut microbiota and may interfere with the honeybee behavioral caste transition

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Insect Science 2025年第1期32卷 260-276页

作者： Zijing Zhang Xiaohuan Mu Qina Cao Yifan Zhai li zheng Yan liu Hao zheng Xue Zhang Hebei Key laboratory of Animal Physiology Biochemistry and Molecular BiologyHebei Collaborative Innovation Center for Eco-EnvironmentCollege of Life SciencesHebei Normal UniversityShijiazhuangChina College of Food Science and Nutritional Engineering China Agricultural UniversityBejingChina Institute of Plant Protection Shandong Academy of Agricultural SciencesJinanChina Key laboratory of Natural Enemies Insects Ministry of Agriculture and Rural AffairsJinanChina Department of Entomology College of Plant ProtectionChina AgriculturalUniversityBeijingChina

Behavioral division is essential for the sustainability and reproduction of honeybee *** accumulating evidence has documented that antibiotic exposure interferes with bee behavioral divisions,how the gut microbiome,host physiology,and genetic regulation are implicated in this process remains ***,by constructing single-cohort colonies,we validated that the gut microbiota varied in composition between age-matched nurse and forager *** the gut microbiota with a low dose of antibiotic retained the gut bacterial size,but the structure of the microbial community continuously diverged from the control group after antibiotic *** foragers were observed in the antibiotic groups in the field experiment.A combinatorial effect of decreased gut metabolic gene repertoires,reduced brain neurotransmitter titers,and downregulated brain immune genes could potentially be related to behavioral tasks transition *** work indicates that the disturbance to both the gut microbiome and host physiologies after antibiotic exposure may have implications on social behavior development,highlighting the need for further research focusing on antibiotic pollution threatening the honeybee population's health.

关键词： antibiotic resistance Apis mellifera behavioral development immune genes

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基于架空线的直流电网保护方案研究

中国电机工程学报 2016年第14期36卷 3726-3733页

作者：吴亚楠吕铮贺之渊孔明周啸范征全球能源互联网研究院北京市昌平区102209

直流电网技术是我国进行可再生能源大规模开发利用的重要手段。然而,目前我国的大范围功率传输仍以架空线为主,因此研究以架空线为主要传输线路的直流电网技术是非常必要的。该文基于架空线故障率高的特点,针对直流电网故障保护,分析两... 详细信息

直流电网技术是我国进行可再生能源大规模开发利用的重要手段。然而,目前我国的大范围功率传输仍以架空线为主,因此研究以架空线为主要传输线路的直流电网技术是非常必要的。该文基于架空线故障率高的特点,针对直流电网故障保护,分析两种主要保护技术路线对于架空线应用直流电网的适用性,提出两种路线各自的系统保护流程,并分析对比其性能优劣,最后给出适用于架空线系统的合理保护方案,并进行仿真验证。

关键词：直流电网保护策略直流断路器超高速故障检测故障自清除换流器

Source apportionment of black carbon using an advanced Aethalometer model in a typical industrial city of China

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Journal of Environmental Sciences 2025年第5期151卷 42-53页

作者： Xingxing Fan Sihang Ye Huang zheng Bin Han Guotao Zhang Zhensen zheng Xueyan Zhao Shaofei Kong Xiaoli Wang Wen Yang Chinese Research Academy of Environmental Sciences Beijing 100012China School of Environmental Science and Safety Engineering Tianjin University of TechnologyTianjin 300380China Service Center Ministry of Ecology and Environment of the People’s Republic of China Beijing 100032China Department of Atmospheric Sciences School of Environmental StudiesChina University of Geosciences(Wuhan)Wuhan 430074China

Black carbon(BC)aerosol can lead to adverse health effects and drive climate change;therefore,the characteristic research and identification of BC sources are essential for lowering *** this study,equivalent black carbon(eBC)measurement was performed using a seven-wavelength Aethalometer(AE33)at an urban site in a typical industrial city(Zibo)of Northern China for the first *** monitoring was performed from February 2021 to January *** mass absorption cross-section(MAC)of AE33 was optimised using the online elemental carbon(EC)data,and eBC was corrected using the *** corrected annual BC concentration was 1.72±1.18μg/m^(3).The diurnal variation of BC depicted a bimodal ***,the BC concentration on weekends was 18%lower than on *** diurnal variation and weekend effect reflect the critical contributions of traffic emission to BC *** source apportionment of BC was calculated by a constraining Aethalometer model,which restricted theÅngstrom exponent using the online potassium *** results revealed that BC was not significantly affected by biomass burning(BC_(bb))in *** relative contribution of BC_(bb)was higher in winter than in other *** daily morning peak of BC was primarily influenced by traffic sources,whereas the contribution of biomass burning increased after 17:00 in the evening *** findings suggest that it is more important to control fossil fuel sources for BC emission reduction in Zibo,while it is necessary to strengthen the control of biomass combustion sources in winter.

关键词： Black carbon(BC) Aethalometer AbsorptionÅngstrom exponent(AAE) Aethalometer model Fossil fuels Biomass burning Source apportionment

Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

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Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： Peng zheng Wang Zhou Ying Mo Biao zheng Miaomiao Han Qin Zhong Wenwen Yang Peng Gao lezhi Yang Jilei liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean EnergyHunan Province Key Laboratory for Advanced Carbon Materials and Applied TechnologyHunan UniversityChangsha 410082HunanChina Greater Bay Area Institute for Innovation Hunan UniversityGuangzhou 511300GuangdongChina Changsha Research Institute of Mining&Metallurgy Co. LTD.Changsha 410017HunanChina

Hard carbon (HC) has been considered as promising anode material for sodium-ion batteries (SIBs).The optimization of hard carbon’s microstructure and solid electrolyte interface (SEI) property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectroscopy/electrochemical impedance spectroscopy (FTIR/EIS) and X-ray photoelectron spectroscopy (XPS) analysis demonstrate the presence of more BC3and less B–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping content exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： Hard carbon Sodium-ion batteries Boron doping Pore structure Electrode/electrolyte interphases

Machine learning based damage state identification:A novel perspective on fragility analysis for nuclear power plants considering structural uncertainties

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Earthquake Engineering and Engineering Vibration 2025年第1期24卷 201-222页

作者： zheng Zhi Wang Yong Pan Xiaolan Ji Duofa College of Civil Engineering Taiyuan University of TechnologyTaiyuan 030024China Key lab of Structures Dynamic Behavior and Control(Harbin Institute of Technology) Ministry of EducationHarbin 150090China Key lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology Harbin Institute of TechnologyHarbin 150090China

Seismic fragility analysis(SFA)is known as an effective probabilistic-based approach used to evaluate seismic *** are various sources of uncertainties associated with this approach.A nuclear power plant(NPP)system is an extremely important infrastructure and contains many structural uncertainties due to construction issues or structural deterioration during *** of structural uncertainties effects is a costly and time-consuming endeavor.A novel approach to SFA for the NPP considering structural uncertainties based on the damage state is proposed and *** results suggest that considering the structural uncertainties is essential in assessing the fragility of the NPP structure,and the impact of structural uncertainties tends to increase with the state of ***,machine learning(Ml)is found to be superior in high-precision damage state identification of the NPP for reducing the time of nonlinear time-history analysis(NlTHA)and could be applied in the damage state-based ***,the impact of various sources of uncertainties is investigated through sensitivity *** Sobol and Shapley additive explanations(SHAP)method can be complementary to each other and able to solve the problem of quantifying seismic and structural uncertainties simultaneously and the interaction effect of each parameter.

关键词： seismic fragility analysis damage state structural uncertainties machine learning sensitivity analysis

Defect Engineering with Rational Dopants Modulation for High‑Temperature Energy Harvesting in lead‑Free Piezoceramics

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Nano-Micro letters 2025年第3期17卷 87-101页

作者： Kaibiao Xi Jianzhe Guo Mupeng zheng Mankang Zhu Yudong Hou Key laboratory of Advanced Functional Materials Ministry of EducationCollege of Materials Science and EngineeringBeijing University of TechnologyBeijing 100124People’s Republic of China

High temperature piezoelectric energy harvester(HTPEH)is an important solution to replace chemical battery to achieve independent power supply of HT wireless ***,simultaneously excellent performances,including high figure of merit(FOM),insulation resistivity(ρ)and depolarization temperature(Td)are indispensable but hard to achieve in lead-free piezoceramics,especially operating at 250°C has not been reported ***,well-balanced performances are achieved in BiFeO3–BaTiO3 ceramics via innovative defect engineering with respect to delicate manganese *** to the synergistic effect of enhancing electrostrictive coefficient by polarization configuration optimization,regulating iron ion oxidation state by high valence manganese ion and stabilizing domain orientation by defect dipole,comprehensive excellent electrical performances(Td=340°C,ρ250°C>10^(7)Ωcm and FOM_(250°C)=4905×10^(–15)m^(2)N^(−1))are realized at the solid solubility limit of manganese *** HT-PEHs assembled using the rationally designed piezoceramic can allow for fast charging of commercial electrolytic capacitor at 250°C with high energy conversion efficiency(η=11.43%).These characteristics demonstrate that defect engineering tailored BF-BT can satisfy high-end HT-PEHs requirements,paving a new way in developing selfpowered wireless sensors working in HT environments.

关键词： lead-free piezoceramic Defect engineering Dopants modulation High-temperature Piezoelectric energy harvester

5个前列腺癌相关单核苷酸多态性具有累积致病效应

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临床泌尿外科杂志 2009年第9期24卷 717-718页

作者： zheng S l Sun J Wiklund F 汪磊北京大学人民医院泌尿外科北京100044

在前期研究中，作者已经证实这5个单核苷酸多态性（SNP）作为独立的因素与前列腺癌具有较弱的相关性。在本次研究中，作者试图分析这些SNPs联合起来是否与前列腺癌具有更强的相关性。

关键词：单核苷酸多态性前列腺癌病效 SNPs 作者