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SensFL:Privacy-Preserving Vertical Federated Learning with Sensitive Regularization

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

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Review on frost resistance and anti-clogging of pervious concrete

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第3期11卷 481-496页

作者： Zhuo Wang zhichen liu Feng Zeng Kun He Shuaicheng Guo China Railway Construction Group Co. Ltd.Beijing 100040China State Key Laboratory of Bridge Safety and Resilience College of Civil EngineeringHunan UniversityChangsha 410082China

Pervious concrete is a special type of concrete that is of high porosity and contains no or a small amount of fine aggregate,and it is an important basic material for sponge city *** presence of a large number of connected pores inside pervious concrete leads to a marked difference in durability failure mechanism compared with that of ordinary *** this study,the frost resistance and anti-clogging of pervious concrete were introduced in detail,and the methods to improve their performance were summarized *** cracking pattern of pervious concrete is influenced by geometric characteristics and three-dimensional morphological features of pores,resulting in its crack generation,development,and geometry being significantly different from those of ordinary concrete,thus leading to different freeze-thaw cycle *** addition,due to its different pore structure compared to ordinary concrete,three types of clogging mechanisms,affecting the long-term permeability of pervious concrete were elaborated systematically(i.e.,physical clogging,biological clogging,and chemical clogging).And the ways to improve the anti-clogging of pervious concrete are systematically presented from multiple ***,in order to broaden the engineering applications of pervious concrete,some research proposals are presented in this study.

关键词： Pervious concrete Connected pore Frost resistance Clogging mechanism

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Study on Hydrogen Storage Properties,Anti-Oxide Ability and Rate Limiting Step of ZrCr-Based Alloy after Introducing Cobalt as Additive

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Journal of Renewable Materials 2023年第3期11卷 1383-1400页

作者： Dongfang Huang Peng Lv Changlin Zhong Xingsheng Zhou zhichen liu Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation East China University of TechnologyNanchang330013China Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices East China University of TechnologyNanchang330013China Engineering Research Center of Nuclear Technology Application(East China University of Technology) Ministry of EducationNanchang330013China School of Innovation and Entrepreneurship Education East China University of TechnologyNanchang330013China

In this work,the microstructure,hydrogen storage properties,anti-oxide ability and rate limiting step of Zr(Cr_(1−x)Co_(x))_(2)(x=0,0.2,0.4 and 0.6)alloys have been *** studying the crystal structure,we found that all alloy samples could show C14-type phase but the alloy sample x=0 could also show a small amount of Cr *** fitting showed that lattice parameter and unit cell volume of C14-type phase decreased with increasing *** further research,it was clear that the first hydrogen absorption capacity decreased with increasing *** introducing more Co content had a positive influence on the effective hydrogen storage capacity and cyclic hydrogen absorption and desorption properties of the alloy *** also found that adding Co to ZrCr_(2)alloy could improve its anti-oxide *** addition to this,the rate limiting step model was also studied.

关键词： ZrCr_(2)alloy first hydrogenation anti-oxide ability rate limiting step cyclic hydrogen absorption and desorption properties

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Sedimentary Features and Paleogeographic Evolution of the Middle Permian Trough Basin in Zunyi,Guizhou,South China

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Journal of Earth Science 2023年第6期34卷 1803-1815页

作者： zhichen liu Qi Zhou Ke liu Yang Wang Deng Chen Yunming Chen Lin Xiao School of Resource and Environmental Engineering Guizhou UniversityGuiyang 550003China State Key Laboratory of Biogeology and Environmental Geology School of Earth SciencesChina University of GeosciencesWuhan430074China 102 Geological Party Guizhou Bureau of Geology and Mineral Exploration and DevelopmentZunyi 563099China Innovation Center of Ore Resources Exploration Technology in the Region of Bedrock Ministry of Natural ResourcesGuiyang 550004China Guizhou Bureau of Geology and Mineral Exploration and Development Guiyang 550004China

Based on detailed field surveys,numerous sections and drillcores as well as analyses of lithofacies and sedimentary facies,sedimentary differentiation in the Middle Permian Zunyi(northern Guizhou,South China)trough basin was studied in *** by activities of the Emeishan mantle plume,the regional extensional setting and the extinguishing of carbonate production factories were shown from Guizhou to *** types of sedimentary enironments were developed in the study area:platform,slope,and *** this work,we established a sedimentary model for the study area,identified 14 syndepositional faults,and created the detailed reconstruction of the trough basin via a sedimentological *** is found that the paleogeographic evolution of the study area can be divided into six stages:(1)a pre-rifting stage,(2)rapid rifting and subsidence,(3)stable rifting and subsidence,(4)the second stage of rifting and subsidence,(5)silicification,and(6)regional uplift and *** sedimentary features and paleogeographic evolution of the Maokou Formation in Zunyi show that the platform,slope,and basin sedimentary features *** addition,the extensional setting and extinguishing of carbonate production factories were important preconditions for the evolution of the platform region in the study area,and the activity of syndepositional faults also played an important role in the paleogeographic evolution of this area.

关键词： Permian Maokou Period Zunyi Guizhou Province trough basin paleogeographic evo-lution sedimentary rocks deposits South China

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Genesis for Rare Earth Elements Enrichment in the Permian Manganese Deposits in Zunyi, Guizhou Province, SW China

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Acta Geologica Sinica(English Edition) 2020年第1期94卷 90-102页

作者： XU Hai GAO Junbo YANG Ruidong DU Lijuan liu zhichen CHEN Jun FENG Kangning YANG Guanghai College of Resources and Environmental Engineering Guizhou UniversityGuiyang 550025China Key Laboratory of Karst Georesources and Environment Ministry of EducationGuizhou UniversityGuiyang 550025China 102 Geological Team Guizhou Bureau of Exploration and Development of Geology Mineral ResourcesZunyiGuizhou 563003China Institute of Geochemistry Chinese Academy of SciencesGuiyang 550081China

The Zunyi manganese deposits, which formed during the Middle to Late Permian period and are located in northern Guizhou and adjacent areas, are the core area of a series of large-medium scale manganese enrichment minerogenesis in the southern margin and interior of the Yangtze platform, Southern China. This study reports the universal enrichment of rare earth elements(REEs) in Zunyi manganese deposits and examines the enrichment characteristics, metallogenic environment and genesis of REEs. The manganese ore bodies present stratiform or stratoid in shape, hosted in the silicon–mud–limestones of the Late Permian Maokou Formation. The manganese ores generally present lamellar, massive, banded and brecciated structures, and mainly consist of rhodochrosite, ropperite, tetalite, capillitite, as well as contains paragenetic gangue minerals including pyrite, chalcopyrite, rutile, barite, tuffaceous clay rock, etc. The manganese ores have higher ΣREE contents range from 158 to 1138.9 ppm(average 509.54 ppm). In addition, the ΣREE contents of tuffaceous clay rock in ore beds vary from 1032.2 to 1824.5 ppm(average 1396.42 ppm). The REEs from manganese deposits are characterized by La, Ce, Nd and Y enriched, and existing in the form of independent minerals(e.g., monazite and xenotime), indicating Zunyi manganese deposits enriched in light rare earth elements(LREE). The Ceanom ratios(average-0.13) and lithofacies and paleogeography characteristics indicate that Zunyi manganese deposits were formed in a weak oxidation-reduction environment. The(La/Yb)ch, Y/Ho,(La/Nd)N,(Dy/Yb)N, Ce/Ce* and Eu/Eu* values of samples from the Zunyi manganese deposits are 5.53–56.92, 18–39, 1.42–3.15, 0.55–2.20, 0.21–1.76 and 0.48–0.86, respectively, indicating a hydrothermal origin for the manganese mineralization and REEs enrichment. The δ13 CV-PDB(-0.54 to-18.1‰) and δ18 OSMOW(21.6 to 26.0‰) characteristics of manganese ores reveal a mixed source of magmatic and organic matter. Moreover, the manga

关键词： Genesis REEs enrichment Hydrothemal origin Permian manganese deposits Zunyi

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Sedimentary features and paleogeographic evolution of the middle Permian trough basin in Zunyi， Guizhou， South China

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Journal of Earth Science 2021年

作者： zhichen liu Qi Zhou Ke liu Yang Wang Deng Chen Yunming Chen Lin Xiao State Key Laboratory of Biogeology and Environmental Geology， School of Earth Sciences， China University of Geosciences-Wuhan 102 Geological Party， Guizhou Bureau of Geology and Mineral Exploration and Development Innovation Center of Ore Resources Exploration Technology in the Region of Bedrock， Ministry of Natural Resources of People's Republic of China Guizhou Bureau of Geology and Mineral Exploration and Development

Based on detailed field surveys， numerous sections and drillcores as well as analyses of lithofacies and sedimentary facies， sedimentary differentiation in the Middle Permian Zunyi （northern Guizhou， South China） trough basin was studied in detail. Caused by activities of the Emeishan mantle plume， the regional extensional setting and the extinguishing of carbonate production factories were shown from Guizhou to Yunnan. Three types of sedimentary enironments were developed in the study area: platform， slope， and basin. In this work， we established a sedimentary model for the study area， identified 14 syndepositional faults， and created the detailed reconstruction of the trough basin via a sedimentological investigation. In addition， we found that the paleogeographic evolution of the study area can be divided into six stages: 1) a pre-rifting stage， 2) rapid rifting and subsidence， 3) stable rifting and subsidence， 4) the second stage of rifting and subsidence， 5) silicification， and 6) regional uplift and denudation. The sedimentary features and paleogeographic evolution of the Maokou Formation in Zunyi show that the platform， slope， and basin sedimentary features coexisted. In addition， the extensional setting and extinguishing of carbonate production factories were important preconditions for the evolution of the platform region in the study area， and the activity of syndepositional faults also played an important role in the paleogeographic evolution of this area.

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Preparation of Co/S co-doped carbon catalysts for excellent methylene blue degradation

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 169-181页

作者： Haixu Li Haobo He Tiannan Jiang Yunfei Du zhichen Wu Liang Xu Xinjie Wang Xiaoguang liu Wanhua Yu Wendong Xue School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Beijing Jinyu Tongda Refractory Technologies Co. Ltd.Beijing 100085China

S and Co co-doped carbon catalysts were prepared via pyrolysis of MOF-71 and thiourea mixtures at 800℃at a mass ratio of MOF-71 to thiourea of 1:0.1 to effectively activate peroxymonosulfate(PMS)for methylene blue(MB)*** effects of two different mixing routes were identified on the MB degradation ***,the catalyst obtained by the alcohol solvent evaporation(MOF-AEP)mixing route could degrade 95.60%MB(50 mg/L)within 4 min(degradation rate:K=0.78 min^(-1)),which was faster than that derived from the direct grinding method(MOF-DGP,80.97%,K=0.39 min^(-1)).X-ray photoelectron spectroscopy revealed that the Co-S content of MOF-AEP(43.39at%)was less than that of MOF-DGP(54.73at%),and the proportion of C-S-C in MOF-AEP(13.56at%)was higher than that of MOF-DGP(10.67at%).Density functional theory calculations revealed that the adsorption energy of Co for PMS was -2.94 eV when sulfur was doped as C-S-C on the carbon skeleton,which was higher than that when sulfur was doped next to cobalt in the form of Co-S bond(-2.86 eV).Thus,the C-S-C sites might provide more contributions to activate PMS compared with ***,the degradation parameters,including pH and MOF-AEP dosage,were ***,radical quenching experiments and electron paramagnetic resonance(EPR)measurements revealed that ^(1)O_(2)might be the primary catalytic species,whereas·O~(2-)might be the secondary one in degrading MB.

关键词： advanced oxidation process alcohol solvent evaporation hydrogen bond S and Co co-doped carbon catalysts wastewater remediation

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Risk of Autism Spectrum Disorder According to the Dose and Trimester of Exposure to Antiseizure Medications: A Systematic Review and Meta-Analysis

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Open Journal of Psychiatry 2023年第2期13卷 106-121页

作者： Zakaria Ahmed Mohamed Erick Thokerunga Ali Omar Jimale zhichen liu Jingyi Fan Department of Pediatrics Zhongnan Hospital of Wuhan University Wuhan China Department of Clinical Laboratory Medicine Center for Gene Diagnosis Zhongnan Hospital of Wuhan University Wuhan China

Background: The association between prenatal exposure to antiseizure medications (ASM) and autism spectrum disorder has been documented. This study sought to examine and synthesize evidence from studies that have evaluated these associations, with particular focus on the trimester of pregnancy and dosage of exposure. Methodology: PubMed, Embase, and PsycINFO databases were searched following strict inclusion/exclusion criteria. 10 studies were recruited involving children born to mothers with epilepsy who took ASM during pregnancy as cases, and those with epilepsy who did not take any ASM in pregnancy. Results: The relative risk of developing ASD among children exposed to valproic acid (RR, 3.90 [95% CI: 2.36 - 6.44], p < 0.006), was twice higher than that of carbamazepine (RR, 1.65 [95% CI: 0.62 - 4.37], p < 0.0001), or lamotrigine (RR, 1.60 [95% CI: 0.77 - 3.32], p = 0.006). The trimester of exposure and dosage of ASM administered were not significant. Conclusion: In summary, prenatal exposure to ASM increased the risk of developing ASD in children. The relative risk was twice as high in those exposed to valproic acid compared to those exposed to carbamazepine or lamotrigine. Trimester of pregnancy and dosage of ASM used by the mothers were not significant.

关键词： Autism Anti-Seizure Anticonvulsants Anti-Epileptic Fetal Prenatal

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中国国家安全学:生成逻辑、体系创新与未来展望

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国际安全研究 2024年第2期42卷 71-95,164,165页

作者：肖晞刘治辰吉林大学吉林大学国家发展与安全研究院长春130012 吉林大学公共外交学院

国家安全学的设立既是呼应新时代发展课题的必然要求,也是国家安全总体战略布局中的重要一环。时代赋予国家安全学现实土壤,战略赋予学科建设内在动力,交叉是学科产生的关键内核,作为战略性新兴学科的国家安全学在时代与战略的共鸣下应... 详细信息

国家安全学的设立既是呼应新时代发展课题的必然要求,也是国家安全总体战略布局中的重要一环。时代赋予国家安全学现实土壤,战略赋予学科建设内在动力,交叉是学科产生的关键内核,作为战略性新兴学科的国家安全学在时代与战略的共鸣下应运而生。国家安全学在总体思维和交叉思维的指导下,在学科体系建设上提高站位、科学错位;在学术体系建设上立足国情、注重内涵;在话语体系建设上言之有理、言之有道,不断探索国家安全学的体系创新,逐渐发展出一条中国国家安全学建设的独特路径。面向未来,需要牢牢把握总体国家安全观,以探索学科基础研究范式为主线,立足学科自身的交叉属性、战略属性和政治属性,推动国家安全学自主知识体系建设与学术共同体建设,促进学科进一步高质量发展。

关键词：国家安全学学科建设总体国家安全观三大体系

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具有可信计算架构的安全操作系统实现方法

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计算机工程 2015年第9期41卷 164-167页

作者：刘智臣长沙湘计海盾科技有限公司嵌入式产品研发部长沙410100

为解决嵌入式系统设备的安全性问题,在操作系统内核一级建立信息安全体系,提出一种安全可信操作系统的实现方法。在Linux基础上实现非对称加密认证、地址隐藏、安全存储、进程可信认证等关键技术,从而构造出可信计算架构,使得操作系统... 详细信息

为解决嵌入式系统设备的安全性问题,在操作系统内核一级建立信息安全体系,提出一种安全可信操作系统的实现方法。在Linux基础上实现非对称加密认证、地址隐藏、安全存储、进程可信认证等关键技术,从而构造出可信计算架构,使得操作系统内核可从行为安全方面对系统驱动、应用程序等进程提供可信认证,阻止认证失败的进程在系统上运行。实验结果证明了可信计算架构的正确性,并能实现对嵌入式系统设备的安全保护。

关键词：可信计算非对称加密认证地址隐藏安全存储可信认证

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