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Zero-Sum Optimal Control for a Cyber-Physical System in Unreliable Communications via Secure Decentralized Policy Iteration

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IEEE Internet of Things Journal 2025年

作者： Zhang, Kun Dong, Xiwang Zhang, Huaguang Su, Rong Beihang University School of Astronautics Beijing100191 China Beihang University Institute of Unmanned System Institute of Artificial Intelligence School of Automation Science and Electrical Engineering Beijing100191 China Northeastern University School of Information Science and Engineering State Key Laboratory of Synthetical Automation for Process Industries Shenyang110819 China School of Electrical and Electronic Engineering Singapore639798 Singapore

This paper investigates the robust consensus scheme for a specific type of leader-follower multi-agent systems (MASs) in the context of a human-cyber-physical interactive system. The system encounters frequent communication challenges characterized by packet loss and data leakage. To address these challenges, the paper proposes a secure decentralized scheme that leverages game theory to determine optimal policies in a zero-sum game. The scheme utilizes the adaptive dynamic programming (ADP) method, which involves a decentralized iterative process. The paper demonstrates that the generated sequence exhibits exponential convergence and provides the maximum iteration number based on the convergence error. To mitigate data leakage among players, the scheme incorporates a secure operation that involves encrypted data. This integration seamlessly combines data conversion and encryption-decryption into decentralized computation. Finally, the paper presents a simulation example to validate the efficacy of the consensus scheme. © 2014 IEEE.

关键词： Information leakage

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V2O3/VN Catalysts Decorated Free-Standing Multifunctional Interlayer for High-Performance Li-S Battery

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CHEMICAL engineering JOURNAL 2022年第0期441卷

作者： Zhao, Jie Zhao, Yuyan Yue, Wen-ce Li, Xue Gao, Ning Zhang, Yu-jiao Hu, Chao-quan [a]Nanjing IPE Institute of Green Manufacturing Industry Nanjing 211135 PR China [b]State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 PR China [c]Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 PR China [d]State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 PR China

The shuttle effect caused by soluble lithium polysulfides (LiPSs) hinders the practical application of lithium-sulfur batteries. The sluggish reaction kinetics of LiPSs results in rapid capacity decay. In this work, we constructed a free-standing multifunctional interlayer decorated with V2O3/VN catalysts to suppress the shuttle effect and boost the redox reaction kinetics. The introduction of VN with strong chemical adsorption improves the conductivity of V2O3, which is beneficial for the kinetics of conversion reaction. In addition, the micro/mesopores inside the structure not only facilitate ion diffusion but also buffer the volume change of the sulfur cathode during the cycling process. Benefiting from the synergistic effects, the fabricated cells exhibit a high specific capacity of 1419.5 mAh g(-1) at 0.1C. The cell with V2O3/VN/C exhibits a promising cycling performance over 1000 cycles with a decay rate of 0.037% per cycle at 1C. The synergistic effects of electrocatalysts and conductive carbon material provide inspiration on the development of high-performance Li-S batteries.

关键词： V2O3/VN nanowires Carbonized bacteria cellulose nanowires Interlayer Synergistic effect Lithium-sulfur batteries

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Seal contact performance analysis of soft seals on high-pressure hydrogen charge valves

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Journal of Zhejiang University-Science A(Applied Physics & engineering) 2022年第4期23卷 247-256页

作者： Zhen-hao LIN Long-jie YU Ting-feng HUA Zhi-jiang JIN Jin-yuan QIAN Institute of Process Equipment College of Energy EngineeringZhejiang UniversityHangzhou310027China State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou310027China Institute of Wenzhou Zhejiang UniversityWenzhou325036China

The charge valve is an important element in the charging port of a high-pressure hydrogen storage cylinder(HP-HSC).It is normally closed after the HP-HSC is filled with *** the seal of the charge valve is damaged,it will seriously affect the stable operation of the hydrogen supply system and may even cause safety ***,the seal performance of the charge valve is *** this paper,finite element analysis(FEA)is carried out to analyze the seal contact performance of hydrogenated nitrile rubber(HNBR)gaskets in the seal pair of a charge *** effects of different pre-compressions,seal widths,and hydrogen pressures on the seal contact performance of the charge valve are *** contact pressure on the seal surface increases with the increase of *** a pre-compression of 2.5 mm,the maximum contact pressure without and with hydrogen pressure are 68.51 and 107.38 MPa,respectively.A contact gap appears in the inner ring of the seal surface with pre-compression below 0.15 *** contact gap occurs between the entire seal surface with a seal width of1 *** contact pressure on the seal surface and the width of the separation area between the seal surfaces increase with the increase of the seal *** contact gap between the seal surfaces is zero with a width of 2.5 *** width of the separation area between the seal surfaces decreases with the decrease of the hydrogen *** width of the separation area is reduced from 0.5 mm at 35 MPa to 0.17 mm at 15 *** work can be useful for improvement of the seal performance and of the design of the charge valve used in the HP-HSC.

关键词： Charge valve Seal contact performance High-pressure hydrogen storage cylinder(HP-HSC) Finite element analysis(FEA)

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Nattokinase as a functional food ingredient:therapeutic applications and mechanisms in age-related diseases

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Food Science and Human Wellness 2024年第5期13卷 2401-2409页

作者： Hao Wu Qian Zhang Hao Suo Feng Xu Wanxu Huang Dan Ohtan Wang Wuya College of Innovation Shenyang Pharmaceutical UniversityShenyang 110016China College of Optoelectronic Engineering and Institute for Innovative Development of Food IndustryShenzhen UniversityShenzhen 518060China College of Life Sciences and Biopharmaceutical Shenyang Pharmaceutical UniversityShenyang 110016China The Fifth Affiliated Hospital of Guangzhou Medical University Guangzhou 510700China State Key Laboratory of New-tech for Chinese Medicine Pharmaceutical Process Lianyungang 222001China RIKEN Center for Biosystems Dynamics Research Kobe 650-0047Japan Graduate School of Biostudies Kyoto UniversityKyoto 606-8501Japan

Consumption of natto,a traditional eastern Asian food made of fermented soybeans by Bacillus subtilis,has long been linked to healthy aging and longer human *** the key thrombolytic ingredient of natto,the serine protease nattokinase(NK)has been developed into a widely-used dietary *** has shown excellent anti-thrombus,thrombolytic,and anti-inflammation activities that potentially delay aging and provide therapeutic effects on aging-related *** this review,we critically overview the experimental and clinical evidence in the past 20 years that support the beneficial function of NK in the prevention and treatment of aging-related diseases,including cardiovascular diseases,Alzheimer’s disease,other abnormalities and *** focus on the underlying molecular mechanisms and recent advances in application methods that are aimed at further development of NK for healthier aging of modern *** challenges and unsolved issues in this area are also discussed.

关键词： Nattokinase Functional food ingredient Aging-related diseases Cardiovascular diseases Inflammation

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A novel elemental composition based prediction model for biochar aromaticity derived from machine learning

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Artificial Intelligence in Agriculture 2021年第1期5卷 133-141页

作者： Hongliang Cao Yaime Jefferson Milan Sohrab Haghighi Mood Michael Ayiania Shu Zhang Xuzhong Gong Electo Eduardo Silva Lora Qiaoxia Yuan Manuel Garcia-Perez Key Laboratory of Agricultural Equipment in Mid-lower Yangtze River College of EngineeringHuazhong Agricultural UniversityNo.1Shizishan StreetHongshan DistrictWuhan 430070PR China Department of Biological Systems Engineering Washington State UniversityPullmanWA 99164USA College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037PR China Key Laboratory of Green Process and Engineering National Engineering Laboratory for Hydrometallurgical Cleaner Production TechnologyInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190PR China Excellence Group in Thermal Power and Distributed Generation Federal University of ItajubáBrazil

The measurement of aromaticity in biochars is generally conducted using solid state 13C nuclear magnetic resonance spectroscopy,which is expensive,time-consuming,and only accessible in a small number of researchintensive *** modelling could be a viable alternative to predict biochar aromaticity from other much easier accessible parameters(*** composition).In this research,Genetic Programming(GP),an advancedmachine learning method,is used to develop *** order to identify and evaluate the performance of prediction models,an experimental data set with 98 biochar samples collected from the literature was *** to the benefits of the intelligence iteration and learning of GP algorithm,a kind of underlying exponential relationship between the elemental compositions and the aromaticity of biochars is disclosed *** exponential relationship is clearer and simpler than the polynomial mapping relationships implicated by Maroto-Valer,Mazumdar,and Mazumdar-Wang *** this case,a novel exponential model is proposed for the prediction of biochar *** proposed exponential model appears better prediction accuracy and generalization ability than existing polynomial models during the statistical parameter evaluation.

关键词： Biochar C aromaticity Prediction model Machine learning Genetic programming

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Identification of SARS-CoV-2-against aptamer with high neutralization activity by blocking the RBD domain of spike protein 1

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Signal Transduction and Targeted Therapy 2021年第7期6卷 1985-1988页

作者： Ge Yang Ziyue Li Irfan Mohammed Liping Zhao Wei Wei Haihua Xiao Weisheng Guo Yongxiang Zhao Feng Qu Yuanyu Huang School of Life Science Advanced Research Institute of Multidisciplinary ScienceInstitute of Engineering MedicineKey Laboratory of Molecular Medicine and BiotherapyBeijing Institute of TechnologyBeijingChina State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijingChina Beijing National Laboratory for Molecular Sciences State Key Laboratory of Polymer Physics and ChemistryInstitute of ChemistryChinese Academy of SciencesBeijingChina Translational Medicine Center Key Laboratory of Molecular Target&Clinical Pharmacology and the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences&the Second Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina National Center for International Research of Biological Targeting Diagnosis and Therapy Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy ResearchGuangxi Medical UniversityNanningGuangxiChina

Dear Editor,The ongoing outbreak of coronavirus disease 2019(COVID-19)caused by severe acute respiratory syndrome coronavirus-2(SARS-CoV-2)poses a great threat to the public health of people and the normal economic and social development around the *** of January 8,2021,more than 88 million people were infected with SARS-CoV-2,resulting in more than 1.9 million death.

关键词： death acute respiratory

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Atomic Cu Sites engineering Enables Efficient CO_(2)Electroreduction to Methane with High CH_(4)/C_(2)H_(4)Ratio

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Nano-Micro Letters 2023年第12期15卷 361-375页

作者： Minhan Li Fangzhou Zhang Min Kuang Yuanyuan Ma Ting Liao Ziqi Sun Wei Luo Wan Jiang Jianping Yang Institute of Functional Materials State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620People’s Republic of China College of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001People’s Republic of China School of Mechanical Medical and Process EngineeringSchool of Chemistry and PhysicsQueensland University of Technology2 George StreetBrisbaneQLD 4001Australia

Electrochemical reduction of CO_(2)into high-value hydrocarbons and alcohols by using Cu-based catalysts is a promising and attractive technology for CO_(2)capture and utilization,resulting from their high catalytic activity and *** mobility and accessibility of active sites in Cubased catalysts significantly hinder the development of efficient Cu-based catalysts for CO_(2)electrochemical reduction reaction(CO_(2)RR).Herein,a facile and effective strategy is developed to engineer accessible and structural stable Cu sites by incorporating single atomic Cu into the nitrogen cavities of the host graphitic carbon nitride(g-C_(3)N_(4))as the active sites for CO_(2)-to-CH_(4)conversion in CO_(2)*** regulating the coordination and density of Cu sites in g-C_(3)N_(4),an optimal catalyst corresponding to a one Cu atom in one nitrogen cavity reaches the highest CH_(4)Faraday efficiency of 49.04%and produces the products with a high CH_(4)/C_(2)H_(4)ratio over *** work provides the first experimental study on g-C_(3)N_(4)-supported single Cu atom catalyst for efficient CH_(4)production from CO_(2)RR and suggests a principle in designing highly stable and selective high-efficiency Cu-based catalysts for CO_(2)RR by engineering Cu active sites in 2D materials with porous crystal structures.

关键词： CO_(2)RR Cu single-atom catalyst g-C_(3)N_(4) Methane CH_(4)/C_(2)H_(4)ratio

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Computational methods for identifying enhancer-promoter interactions

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Quantitative Biology 2023年第2期11卷 122-142页

作者： Haiyan Gong Zhengyuan Chen Yuxin Tang Minghong Li Sichen Zhang Xiaotong Zhang Yang Chen School of Computer and Communication Engineering BeijingAdvanced Innovation Center for Materials Genome EngineeringUniversity of Science and Technology BeijingBeijing 100083China State Key Laboratory of Medical Molecular Biology Department of Biochemistry and Molecular BiologyInstitute of Basic Medical SciencesSchool of Basic MedicineChinese Academy of Medical SciencesPeking Union Medical CollegeBeijing 100005China Shunde Innovation School University of Science and Technology BeijingFoshan 528399China

Background:As parts of the cis-regulatory mechanism of the human genome,interactions between distal enhancers and proximal promoters play a crucial ***,promoters,and enhancer-promoter interactions(EPIs)can be detected using many sequencing technologies and computation ***,a systematic review that summarizes these EPI identification methods and that can help researchers apply and optimize them is still ***:In this review,we first emphasize the role of EPIs in regulating gene expression and describe a generic framework for predicting enhancer-promoter ***,we review prediction methods for enhancers,promoters,loops,and enhancer-promoter interactions using different data features that have emerged since 2010,and we summarize the websites available for obtaining enhancers,promoters,and enhancer-promoter interaction ***,we review the application of the methods for identifying EPIs in diseases such as ***:The advance of computer technology has allowed traditional machine learning,and deep learning methods to be used to predict enhancer,promoter,and EPIs from genetic,genomic,and epigenomic *** the past decade,models based on deep learning,especially transfer learning,have been proposed for directly predicting enhancer-promoter interactions from DNA sequences,and these models can reduce the parameter training time required of bioinformatics *** believe this review can provide detailed research frameworks for researchers who are beginning to study enhancers,promoters,and their interactions.

关键词： enhancer promoter enhancer-promoter interaction machine learning deep learning

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Prominently Improved Co2/N2 Separation Efficiency by Ultrathin-Ionic-Liquid-Covered Mxene Membrane

SSRN

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SSRN 2022年

作者： Xu, Peng Zhang, Xiaochun Zhao, Linlin Wang, Zhenlei Liu, Yawei Bai, Lu Liu, Zhiping State Key Laboratory of Organic-Inorganic Composites School of Chemical Engineering Beijing University of Chemical Technology Beijing100029 China Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China

MXene-based membrane exhibits great potential in gas separation but still suffers from poor selectivity for the gases with similar dynamic diameters, such as CO2 and N2. Here, we propose a composite membrane constructed by covering MXene with an ultrathin layer of ionic liquid (IL) to separate CO2/N2 mixtures. The influences of MXene-slit width and IL-film thickness on CO2/N2 separation performance were investigated by using molecular dynamic simulations. The gas separation performance is significantly enhanced after covering the IL film, and the thickness of the film acts as a major factor to determine the performance. With the amounts of the IL increased from one to two layers, the CO2 permeance decreases from 2.3×104 to 2.6×103 GPU, while the N2 permeance declines more sharply, resulting in an increased selectivity. Compared to the IL-film thickness, the slit width has less influence on gas permeance. However, the CO2/N2 selectivity decreases as the slit width enlarges. Finally, we concluded that the composite membrane composed of MXene with 8 Å slit and 40 pairs (about one and a half layers) of IL exhibits the best CO2/N2 separation performance, with the CO2 permeance up to 104 GPU, and no N2 passed through the membrane during the simulations. Furthermore, the interaction of gas-composite membrane and the penetration process of gas were also discussed. The excellent CO2/N2 separation performance is ascribed to the synergistic effect of IL on the surface of MXene and anions in the slit. © 2022, The Authors. All rights reserved.

关键词： Ionic liquids

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Therapeutic values of chick early amniotic fluid(ceAF)that facilitates wound healing via potentiating a SASP-mediated transient senescence

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Genes & Diseases 2022年第5期9卷 1345-1356页

作者： Mashaal Ahmad Yandi Sun Xueyao Jia Jingjia Li Lihong Zhang Ze Yang Yindan Lin Xueyun Zhang Zara Ahmad Khan Jin Qian Yan Luo Department of Biochemistry and Cancer Institute of the Second Affiliated Hospital Key Laboratory of Cancer Prevention and Intervention of China National MOEZhejiang University School of MedicineHangzhouZhejiang 310058PR China State Key Laboratory of Oncogenes and Related Genes Institute for Personalized MedicineSchool of Biomedical EngineeringShanghai Jiao Tong UniversityShanghai 200240PR China Zhejiang HygeianCells BioMedical Co.Ltd. HangzhouZhejiang 310000PR China

Inflammatory,proliferative and remodeling phases constitute a cutaneous wound healing *** applications and medication are available;however,they commonly are comprised of fortified preservatives that might prolong the healing *** early amniotic fluids(ceAF)contain native therapeutic factors with balanced chemokines,cytokines and growth-related factors;their origins in principle dictate no existence of harmful agents that would otherwise hamper embryo ***,they possess a spectrum of molecules driving expeditious mitotic divisions and possibly exerting other *** both in vitro and in vivo models,we examined ceAF's therapeutic potentials in wound healing and found intriguing involvement of transient senescence,known to be intimately intermingled with Senescence Associated Secretory Phenotypes(SASP)that function in addition to or in conjunction with ceAF to facilitate wound *** our cutaneous wound healing models,a low dose of ceAF exhibited the best efficacies;however,higher doses attenuated the wound healing presumably by inducing p16 expression over a *** studies thus link an INK4/ARF locus-mediated signaling cascade to cutaneous wound healing,suggesting therapeutic potentials of ceAF exerting functions likely by driving transient senescence,expediting cellular proliferation,migration,and describing a homeostatic and balanced dosage strategy in medical intervention.

关键词： Amniotic fluids Chick early embryo Cutaneous wound healing Senescence associated secretory phenotypes (transient)Senescence

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