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SensFL:Privacy-Preserving Vertical Federated Learning with Sensitive Regularization

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 385-404页

作者： Chongzhen Zhang Zhichen liu Xiangrui Xu fuqiang hu Jiao Dai Baigen Cai Wei Wang School of Automation and Intelligence Beijing Jiaotong UniversityBeijing100044China Shuohuang Railway Development Co. Ltd.National Energy GroupCangzhou062350China Beijing Key Laboratory of Security and Privacy in Intelligent Transportation School of Computer Science and TechnologyBeijing Jiaotong UniversityBeijing100044China

In the realm of Intelligent Railway Transportation Systems,effective multi-party collaboration is crucial due to concerns over privacy and data *** Federated Learning(VFL)has emerged as a promising approach to facilitate such collaboration,allowing diverse entities to collectively enhance machine learning models without the need to share sensitive training ***,existing works have highlighted VFL’s susceptibility to privacy inference attacks,where an honest but curious server could potentially reconstruct a client’s raw data from embeddings uploaded by the *** vulnerability poses a significant threat to VFL-based intelligent railway transportation *** this paper,we introduce SensFL,a novel privacy-enhancing method to against privacy inference attacks in ***,SensFL integrates regularization of the sensitivity of embeddings to the original data into the model training process,effectively limiting the information contained in shared *** reducing the sensitivity of embeddings to the original data,SensFL can effectively resist reverse privacy attacks and prevent the reconstruction of the original data from the *** experiments were conducted on four distinct datasets and three different models to demonstrate the efficacy of *** results show that SensFL can effectively mitigate privacy inference attacks while maintaining the accuracy of the primary learning *** results underscore SensFL’s potential to advance privacy protection technologies within VFL-based intelligent railway systems,addressing critical security concerns in collaborative learning environments.

关键词： Vertical federated learning privacy defenses

Designing Electronic Structures of Multiscale Helical Converters for Tailored Ultrabroad Electromagnetic Absorption

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Nano-Micro Letters 2025年第1期17卷 439-455页

作者： Zhaobo Feng Chongbo liu Xin Li Guangsheng Luo Naixin Zhai Ruizhe hu Jing Lin Jinbin Peng Yuhui Peng Renchao Che Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle School of Environmental and Chemical EngineeringNanchang Hangkong UniversityNanchang 330063People’s Republic of China School of Physics and Materials Nanchang UniversityNanchang 330031People’s Republic of China Key Laboratory of Nondestructive Testing Ministry of EducationNanchang Hangkong UniversityNanchang 330063People’s Republic of China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsAcademy for Engineering and TechnologyFudan UniversityShanghai 200438People’s Republic of China

Atomic-scale doping strategies and structure design play pivotal roles in tailoring the electronic structure and physicochemical property of electromagnetic wave absorption(EMWA)***,the relationship between configuration and electromagnetic(EM)loss mechanism has remained ***,drawing inspiration from the DNA transcription process,we report the successful synthesis of novel in situ Mn/N co-doped helical carbon nanotubes with ultrabroad EMWA *** calculation and EM simulation confirm that the orbital coupling and spin polarization of the Mn–N4–C configuration,along with cross polarization generated by the helical structure,endow the helical converters with enhanced EM *** a result,HMC-8 demonstrates outstanding EMWA performance,achieving a minimum reflection loss of−63.13 dB at an ultralow thickness of 1.29 *** precise tuning of the graphite domain size,HMC-7 achieves an effective absorption bandwidth(EAB)of 6.08 GHz at 2.02 mm ***,constructing macroscale gradient metamaterials enables an ultrabroadband EAB of 12.16 GHz at a thickness of only 5.00 mm,with the maximum radar cross section reduction value reaching 36.4 dB *** innovative approach not only advances the understanding of metal–nonmetal co-doping but also realizes broadband EMWA,thus contributing to the development of EMWA mechanisms and applications.

关键词： Metal-nonmetal co-doping 3d-2p orbital coupling Spin polarization Helical structure Broadband EM wave absorption

Sulfolane‑Based Flame‑Retardant Electrolyte for High‑Voltage Sodium‑Ion Batteries

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Nano-Micro Letters 2025年第2期17卷 498-516页

作者： Xuanlong He Jie Peng Qingyun Lin Meng Li Weibin Chen Pei liu Tao huang Zhencheng huang Yuying liu Jiaojiao Deng Shenghua Ye Xuming Yang Xiangzhong Ren Xiaoping Ouyang Jianhong liu Biwei Xiao Jiangtao hu Qianling Zhang Graphene Composite Research Center College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Center of Electron Microscopy State Key Laboratory of Silicon and Advanced Semiconductor MaterialsSchool of Materials Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China GRINM(Guangdong)Research Institute for Advanced Materials and Technology FoshanGuangdong 528051People’s Republic of China College of Energy Engineering Zhejiang UniversityHangzhouZhejiang 310027People’s Republic of China School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105People’s Republic of China Shenzhen Eigen-Equation Graphene Technology Co.Ltd Shenzhen 518000People’s Republic of China

Sodium-ion batteries hold great promise as next-generation energy storage ***,the high instability of the electrode/electrolyte interphase during cycling has seriously hindered the development of *** particular,an unstable cathode–electrolyte interphase(CEI)leads to successive electrolyte side reactions,transition metal leaching and rapid capacity decay,which tends to be exacerbated under high-voltage ***,constructing dense and stable CEIs are crucial for high-performance *** work reports localized high-concentration electrolyte by incorporating a highly oxidation-resistant sulfolane solvent with non-solvent diluent 1H,1H,5H-octafluoropentyl-1,1,2,2-tetrafluoroethyl ether,which exhibited excellent oxidative stability and was able to form thin,dense and homogeneous *** excellent CEI enabled the O3-type layered oxide cathode NaNi_(1/3)Mn_(1/3)Fe_(1/3)O_(2)(NaNMF)to achieve stable cycling,with a capacity retention of 79.48%after 300 cycles at 1 C and 81.15%after 400 cycles at 2 C with a high charging voltage of 4.2 *** addition,its nonflammable nature enhances the safety of *** work provides a viable pathway for the application of sulfolane-based electrolytes on SIBs and the design of next-generation high-voltage electrolytes.

关键词： Sodium-ion batteries Sulfolane-based electrolyte High voltage Layered oxide cathode Flame retardant

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基于ANSYS的联轴器工程有限元分析

机械工程与自动化 2018年第4期 66-67页

作者：刘凯傅留虎山西省机械产品质量监督检验站山西太原030009

采用有限元法对某联轴器进行分析。首先利用ANSYS建立了该联轴器的模型,之后按照其实际工作情况施加载荷和约束,并对其进行求解,得到了联轴器X、Y、Z方向的位移与总位移云图,以及X、Y、Z方向的应力与von Mises等效应力分布云图;之后对... 详细信息

采用有限元法对某联轴器进行分析。首先利用ANSYS建立了该联轴器的模型,之后按照其实际工作情况施加载荷和约束,并对其进行求解,得到了联轴器X、Y、Z方向的位移与总位移云图,以及X、Y、Z方向的应力与von Mises等效应力分布云图;之后对其进行了疲劳强度分析,结果表明该联轴器大、小孔处极限应力小于材料的屈服极限和疲劳破坏极限,其在正常传递扭矩的情况下校核安全,满足正常工作的要求。

关键词：联轴器有限元 ANSYS

Synthetic control of chiral pore surfaces in covalent organic frameworks for enantioselective separation of chiral drugs

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Science China Chemistry 2025年

作者： Shiguo fu Xiaofeng Zhang Kaixuan Wang Linfeng Chen Fan Xia Yong Cui Yan liu School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Faculty of Materials Science and Chemistry China University of Geosciences

Enantioselective separations of racemates using porous materials are highly attractive and significant in both fundamental research and technological applications. However, achieving controlled chiral pore surfaces to create the necessary driving force for enantiomer discrimination poses a fundamental challenge. Herein, we demonstrate that chiral covalent organic frameworks(COFs) possess the essential characteristics for effective enantioseparations through synthetic control over pore surfaces. We synthesized three 3D chiral COFs (CCOFs) featuring abundant chiral recognition sites on the pore walls via the condensation of enantiopure dialdehyde of 2,2′-dihydroxy-1,1′-binaphthyl and tetraamine. All CCOFs with high stability exhibit an 11-fold interpenetrated framework with tubular open channels, decorated with dihydroxyl or diethoxyl groups. The CCOFs with dihydroxyl groups serve as solid adsorbents for the adsorptive separation and solid-phase extraction of various chiral 1-phenylethanol-derived enantiomers, particularly racemic drugs, achieving up to 98%enantiomeric excess. In contrast, the CCOF with diethoxy groups is unable to resolve the racemates. These CCOF materials can be recycled and reused without any apparent loss of performance. Density functional theory (DFT) calculations reveal that the enantiospecific recognition arises from the well-organized chiral inner sphere and multiple chiral host-guest interactions.

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Strategies for achieving fast-charge and high-voltage polymer-based solid-state lithium metal batteries

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Science China Chemistry 2025年

作者： Zitian Lin Sucheng liu Ce Cui Wuhua liu Yufeng Su huiyu Song Li Du Jianqiang hu Zhiming Cui Guangdong Provincial Key Laboratory of fuel Cell Technology School of Chemistry and Chemical Engineering South China University of Technology

Solid-state polymer electrolytes hold the potential for market application due to the combination of advantageous properties,such as flexibility,ease of processing and low ***,the sluggish ion transport and poor high-voltage stability pose significant challenges for the practical application of polymer-based solid-state lithium metal batteries (SSLMBs).Therefore,the design and development of polymer-based SSLMBs toward fast-charge and high-voltage is of great significance in high-energydensity ***,this review deeply analyzes the mechanism of ion transport and anti-oxidation of polymer-based solidstate ***,we also systematically and comprehensively summarize the factors that affect ionic conductivity and the electrochemical ***,we outline the solution strategies for simultaneously enhancing both ionic conductivity and high-voltage ***,we discuss the main challenges and the future prospects of polymer-based SSLMBs for further *** is hoped that this review can provide both advances and fundamentals to the research community and pave the way for the development of SSLMBs

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基于移动主用户的认知无线网络动态频谱接入

计算机工程与设计 2016年第11期37卷 2876-2880,2886页

作者：刘觉夫胡静王建旭陈婧琳华东交通大学信息工程学院江西南昌330013

针对具有移动主用户的认知无线网络中的频谱接入问题,提出一种基于移动主用户的动态频谱接入策略。提出主用户最优保护距离保证主用户的正常通信,对主用户与次用户之间的相对距离进行估计,利用其对信道的可用性进行动态建模,得到能充分... 详细信息

针对具有移动主用户的认知无线网络中的频谱接入问题,提出一种基于移动主用户的动态频谱接入策略。提出主用户最优保护距离保证主用户的正常通信,对主用户与次用户之间的相对距离进行估计,利用其对信道的可用性进行动态建模,得到能充分利用主用户空间临时信道使用策略的最优信道选择策略。仿真结果表明,该策略能有效提高次级链路吞吐量,保证公平性,在次用户分布密度增加时也能取得良好的性能。

关键词：认知无线网络移动主用户空间临时信道使用策略吞吐量公平性

human neural stem cell-derived extracellular vesicles protect against ischemic stroke by activating the PI3K/AKT/mTOR pathway

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Neural Regeneration Research 2025年第11期20卷 3245-3258页

作者： Jiayi Wang Mengke Zhao Dong fu Meina Wang Chao Han Zhongyue Lv Liang Wang Jing liu Stem Cell Clinical Research Center The First Affiliated Hospital of Dalian Medical UniversityDalianLiaoning ProvinceChina Dalian Innovation Institute of Stem Cell and Precision Medicine DalianLiaoning ProvinceChina Institute(College)of Integrative Medicine Dalian Medical UniversityDalianLiaoning ProvinceChina

human neural stem cell-derived extracellular vesicles exhibit analogous functions to their parental cells,and can thus be used as substitutes for stem cells in stem cell therapy,thereby mitigating the risks of stem cell therapy and advancing the frontiers of stem cell-derived *** lays a foundation for the development of potentially potent new treatment modalities for ischemic ***,the precise mechanisms underlying the efficacy and safety of human neural stem cell-derived extracellular vesicles remain unclear,presenting challenges for clinical *** promote the translation of therapy based on human neural stem cell-derived extracellular vesicles from the bench to the bedside,we conducted a comprehensive preclinical study to evaluate the efficacy and safety of human neural stem cell-derived extracellular vesicles in the treatment of ischemic *** found that administration of human neural stem cell-derived extracellular vesicles to an ischemic stroke rat model reduced the volume of cerebral infarction and promoted functional recovery by alleviating neuronal *** human neural stem cell-derived extracellular vesicles reduced neuronal apoptosis by enhancing phosphorylation of phosphoinositide 3-kinase,mammalian target of rapamycin,and protein kinase B,and these effects were reversed by treatment with a phosphoinositide 3-kinase *** findings suggest that human neural stem cell-derived extracellular vesicles play a neuroprotective role in ischemic stroke through activation of phosphoinositide 3-kinase/protein kinase B/mammalian target of rapamycin signaling ***,we showed that human neural stem cell-derived extracellular vesicles have a good in vivo safety ***,human neural stem cell-derived extracellular vesicles are a promising potential agent for the treatment of ischemic stroke.

关键词： behavior exosome extracellular vesicles ischemic stroke mammalian target of rapamycin(mTOR) middle cerebral artery occlusion neural stem cells neuronal apoptosis phosphoinositide 3-kinase(PI3K) protein kinase B(AKT)

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大长径比减振镗杆的ANSYS静力优化分析

机械工程与自动化 2018年第4期 91-93页

作者：张帅傅留虎山西省机械产品质量监督检验站山西太原030009

大长径比镗杆对于深孔的加工有很好的效果,为设计性能较为优良的减振镗杆,采用数值模拟的手段,对三种镗杆方案进行了ANSYS静力分析。通过分析得出性能最为优良的减振镗杆,在镗杆一端加入橡胶阻尼提高了其减振性能,在另一端加入硬质合金... 详细信息

大长径比镗杆对于深孔的加工有很好的效果,为设计性能较为优良的减振镗杆,采用数值模拟的手段,对三种镗杆方案进行了ANSYS静力分析。通过分析得出性能最为优良的减振镗杆,在镗杆一端加入橡胶阻尼提高了其减振性能,在另一端加入硬质合金提高了其刚度。

关键词：镗杆 ANSYS 优化