检索结果-内蒙古大学图书馆

Protecting Your Attention during Distributed Graph Learning: Efficient Privacy-Preserving Federated Graph Attention Network

引用

IEEE Transactions on Information Forensics and Security 2025年 20卷 1949-1964页

作者： Zhou, Jinhao Wu, Jun Ni, Jianbing Wang, Yuntao Pan, Yanghe Su, Zhou Waseda University Graduate School of Information Production and Systems Fukuoka808-0135 Japan Queen's University Department of Electrical and Computer Engineering KingstonONK7L 3N6 Canada Xi'An Jiaotong University School of Cyber Science and Engineering Xi'an710049 China

Federated graph attention networks (FGATs) are gaining prominence for enabling collaborative and privacy-preserving graph model training. The attention mechanisms in FGATs enhance the focus on crucial graph features for improved graph representation learning while maintaining data decentralization. However, these mechanisms inherently process sensitive information, which is vulnerable to privacy threats like graph reconstruction and attribute inference. Additionally, their role in assigning varying and changing importance to nodes challenges traditional privacy methods to balance privacy and utility across varied node sensitivities effectively. Our study fills this gap by proposing an efficient privacy-preserving FGAT (PFGAT). We present an attention-based dynamic differential privacy (DP) approach via an improved multiplication triplet (IMT). Specifically, we first propose an IMT mechanism that leverages a reusable triplet generation method to efficiently and securely compute the attention mechanism. Second, we employ an attention-based privacy budget that dynamically adjusts privacy levels according to node data significance, optimizing the privacy-utility trade-off. Third, the proposed hybrid neighbor aggregation algorithm tailors DP mechanisms according to the unique characteristics of neighbor nodes, thereby mitigating the adverse impact of DP on graph attention network (GAT) utility. Extensive experiments on benchmarking datasets confirm that PFGAT maintains high efficiency and ensures robust privacy protection against potential threats. © IEEE.

关键词： Differential privacy

来源：评论

学校读者我要写书评

暂无评论

Data-driven consensus control of fully distributed event-triggered multi-agent systems

引用

science China(Information sciences) 2023年第5期66卷 147-161页

作者： Yifei LI Xin WANG Jian SUN Gang WANG Jie CHEN School of Automation Beijing Institute of Technology The State Key Lab of Autonomous Intelligent Unmanned Systems Beijing Institute of Technology Beijing Institute of Technology Chongqing Innovation Center Department of Control Science and Engineering Tongji University

This study investigates the consensus control issue in discrete-time linear multi-agent systems(MASs) using data-driven control under undirected communication networks. To alleviate the communication burden, an adaptive event-triggered control strategy involving only local information is proposed and a model-based stability condition is derived that guarantees the asymptotic consensus of MASs. Furthermore,a data-based consensus condition for unknown MASs is established by combining a data-based system representation with the model-based stability condition, using only pre-collected noisy input-state data instead of the accurate system information a priori. Specifically, both model-based and data-driven event-triggered controllers can be utilized without requiring any global information. The validity and correctness of the controllers and associated theoretical results are demonstrated via numerical simulations.

关键词： distributed control event-triggered control data-driven control discrete-time MASs

来源：评论

学校读者我要写书评

暂无评论

A Robust Guaranteed Cost Formation control for a Class of Uncertain Multi-Agent systems for Event-Trigger-Based Variable Gain controllers 6

A Robust Guaranteed Cost Formation Control for a Class of Un...

引用

6th International Conference on Electrical, control and Instrumentation engineering, ICECIE 2024

作者： Asada, Daiki Oya, Hidetoshi Nagai, Shunya Hoshi, Yoshikatsu Graduate School of Integrative Science and Engineering Tokyo City University Tokyo Japan Tokyo City University The Department of Computer Science Tokyo Japan Niihama College Department of Electronics and Control Engineering Ehime Japan

ISBN: (纸本)9798350380040

In this paper, we propose a design method for a new event-trigger-based variable gain robust controller which achieves both consensus and guaranteed cost performance for a class of uncertain multi-agent systems (MASs) with the leader-follower structure. The proposed variable gain robust controller is composed of stabilizing state feedback laws, state feedback inputs for consensus, and compensation inputs with adjustable parameters, and is designed for giving consideration to relative positions explicitly. In this paper, we show that sufficient conditions for the existence of the proposed robust guaranteed cost formation controller are given in terms of Linear Matrix Inequalities (LMIs). Finally, a simple example is included. © 2024 IEEE.

关键词： State feedback

来源：评论

学校读者我要写书评

暂无评论

Solution-flame hybrid synthesis of defect-enriched mesoporous CuO_(x) nanowires for enhanced electrochemical nitrate-to-ammonia production

引用

Journal of Energy Chemistry 2024年第12期99卷 475-483页

作者： Li Qu Sungkyu Kim Runfa Tan Arumugam Sivanantham Seokgi Kim Yoo Jae Jeong Min Cheol Kim Seong Sik Shin Uk Sim In Sun Cho Department of Materials Science&Engineering Ajou UniversitySuwon 16499Republic of Korea Department of Energy Systems Research Ajou UniversitySuwon 16499Republic of Korea Department of Nanotechnology and Advanced Materials Engineering Sejong UniversitySeoul 05006Republic of Korea Department of Chemistry Sookmyung Women's UniversitySeoul 04310Republic of Korea Department of Nano Engineering and Department of Nano Science and Technology SKKU Advanced Institute of Nanotechnology(SAINT)Sungkyunkwan UniversitySuwonRepublic of Kore SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan UniversitySuwonRepublic of Kore School of Energy Technology Korea Institute of Energy Technology(KENTECH)Jeonnam 58217Republic of Korea

Electrochemical nitrate reduction(ENR)is an economical and eco-friendly method for converting industrial wastewater into valuable ammonia under atmospheric *** main challenge lies in designing and developing highly durable ENR *** study introduces defect-rich mesoporous CuO_(x) nanowires electrocatalyst synthesized using a novel solution-flame(sol-flame)hybrid method to control mesoporosity and introduce surface defects,thereby enhancing the electrochemical nitrate-toammonia production *** found surface defects(oxygen vacancies and Cu^(+))and unique mesoporous nanowire structure composed of tightly interconnected *** sol-flamesynthesized CuO_(x) nanowires(sf-CuO NWs)achieved superior ammonia yield rate(0.51 mmol h^(-1)cm^(-2)),faradaic efficiency(97.3%),and selectivity(86.2%)in 1 M KOH electrolyte(2000 ppm nitrate).This performance surpasses that of non-porous and less-defective CuO NWs and is attributed to the increased surface area and rapid electron transport facilitated by the distinctive morphology and generated *** calculation further suggests oxygen vacancies enhance NO_(3)^(-)adsorption on the sf-CuO NWs’surface and mitigate the competing hydrogen evolution *** study outlines a strategic design and simple synthesis approach for nanowire electrocatalysts that boost the efficiency of electrochemical nitrate-to-ammonia conversion.

关键词： CuO nanowires Solution-flame Mesoporous Oxygen vacancy Electrochemical nitrate reduction Wastewater

来源：评论

学校读者我要写书评

暂无评论

Synthesis of Variable Gain Robust State Observer for a Class of Uncertain Nonlinear systems 6

Synthesis of Variable Gain Robust State Observer for a Class...

引用

6th International Conference on Electrical, control and Instrumentation engineering, ICECIE 2024

作者： Hirasawa, Kazuhiro Asada, Daiki Nagai, Shunya Oya, Hidetoshi Graduate School of Integrative Science and Engineering Tokyo City University Tokyo Japan Niihama College Department of Electronics and Control Engineering Ehime Japan Tokyo City University The Department of Computer Science Tokyo Japan

ISBN: (纸本)9798350380040

This paper proposes a new variable gain robust state observer for a class of uncertain nonlinear systems. The variable gain robust state observer proposed in this paper consists of fixed observer gain matrices and nonlinear modification functions which are determined by appropriate updating rules. It is shown that sufficient conditions for the existence of the proposed variable gain robust state observer can be reduced to solvability of Linear Matrix Inequalities (LMIs). Finally, we give a simple numerical example. © 2024 IEEE.

关键词： State estimation

来源：评论

学校读者我要写书评

暂无评论

3D Fusion W-Net and HoloLens-Based Interactive Visualization for Lung Airway Segmentation 13

3D Fusion W-Net and HoloLens-Based Interactive Visualization...

引用

13th IEEE Global Conference on Consumer Electronic, GCCE 2024

作者： Lyu, Liang Liu, Jiaqing Chai, Shurong Wang, Fang Tateyama, Tomoko Qiao, Xu Chen, Yen-Wei Ritsumeikan University Graduate School of Information Science and Engineering Ibaraki Japan Srrsh School of Medicine Zhejiang University Department of Radiology Hangzhou China Fujita Health University Department of Intelligent Information Engineering Toyoake Japan Shandong University School of Control Science and Engineering Jinan China

ISBN: (纸本)9798350355079

Lung health is crucial to human well-being, with lung diseases exhibiting high incidence and mortality rates worldwide. Accurate segmentation of lung airways is vital for diagnosis, especially highlighted by the recent coronavirus pandemic. Despite extensive research, challenges persist due to the complex structure of lung airways. This study proposes a novel dual-encoder network combining Convolutional Neural Networks (CNNs) and Transformer networks for precise lung airway segmentation. Evaluations on a private dataset from Shandong University and the public LIDC-IDRI dataset demonstrate superior performance over existing methods. We also introduce a system utilizing Microsoft HoloLens 2 for 3D holographic visualization of lung airways, enhancing medical diagnostics and education. This user-centric pipeline offers immersive, interactive, and collaborative experiences for medical professionals. In summary, this study presents an advanced segmentation network and demonstrates the integration of Mixed Reality and deep learning in medical applications, potentially improving lung disease diagnosis and treatment. © 2024 IEEE.

关键词： Lung cancer

来源：评论

学校读者我要写书评

暂无评论

A Framework for Prescribed-Time Integral control Design of Feedback Nonlinear systems

引用

IEEE Transactions on Circuits and systems II: Express Briefs 2024年第3期71卷 1281-1285页

作者： Chen, Xiandong Li, Jinbao Zhang, Xianfu Chen, Chih-Chiang Shandong Artificial Intelligence Institute Jinan250014 China School of Mathematics and Statistics Jinan250353 China Shandong University School of Control Science and Engineering Jinan250061 China National Cheng Kung University Department of Systems and Naval Mechatronic Engineering Tainan70101 Taiwan

This brief investigates the global prescribed-time regulation problem for a class of uncertain feedback systems subject to matched disturbances and modeling uncertainties with unknown and time-varying system parameters. New integral controllers consisting of an integral dynamic are proposed to make all states of the uncertain systems bounded and prescribed-time convergent to zero. First, by introducing an integral dynamic and a novel state transformation, the uncertain feedback systems with disturbances are converted into a class of generalized feedback nonlinear systems. Second, by virtue of the dynamic gain technique, the problem of designing prescribed-time regulating controllers for the generalized feedback nonlinear systems is transformed into that of designing a dynamic parameter for a class of new systems. At last, following the Lyapunov stability theorem and characteristic of the dynamic parameter, the boundness of the new systems yields the prescribed-time regulation of the generalized feedback nonlinear systems, which indicates the global prescribed-time regulation of the considered systems. The effectiveness of integral controllers is verified from simulation results in a PWM-based DC-DC buck converter. © 2004-2012 IEEE.

关键词： controllers

来源：评论

学校读者我要写书评

暂无评论

Electrical Tracking,Erosion and Fire Retardancy Performance of Silicone Rubber Insulation Containing Aluminum Trihydrate,Graphene and Glass Fiber Additives

引用

CSEE Journal of Power and Energy systems 2023年第5期9卷 1918-1925页

作者： M.Tariq Nazir Arslan Khalid B.Toan Phung Arup K.Das Peter Cheetham Ashish Paramane Shakeel Akram Khoi Loon Wong School of Engineering RMIT UniversityMelbourneVIC 3000Australia. the Center for Advanced Power Systems(CAPS) Florida State UniversityFL 32310USA the Flame Security International Pty Limited Australia the School of Electrical Engineering and Telecommunications University of New South Wales SydneyNSW 2052Australia Department of Electrical Engineering National Institute of TechnologySilcharAssam 788010India the College of Electrical Engineering and Control Science Nanjing Tech UniversityNanjingJiangsu 211816China

Silicone rubber composite is a priority electrical insulating material used in high-voltage outdoor insulation *** electrical tracking/erosion and poor flame resistance performance of silicone rubber once ignited,substantially reduce its working *** paper attempts to investigate tracking/erosion performance of room temperature vulcanized(RTV)silicone rubber along with flame retardant parameters using aluminum trihydrate(ATH),graphene nanosheets(GN)and milled glass fiber(GF)*** inclined plane test(IPT)was performed in line with criteria defined in IEC 60587 using step-up tracking voltage method while flame retardancy is evaluated according to ASTM E 1354.0 using a cone *** suggest 30% of ATH assists in improving physical tracking/erosion resistance of pristine silicone elastomer rubber by impeding development of leakage current and a great reduction in maximum average temperatures on the surface of *** improvement in performance of RTV2 is achieved through introduction of 1%of GN and 5% of GF as seen in ***,30% of ATH reduces heat release rate and smoke production rate,and this trend is improved with the introduction of GN/***4 has pop up as the most promising silicone rubber composite with excellent electrical tracking,erosion,and flame resistance performance relative to its counterparts in this study.

关键词： Dry band arcing electrical tracking heat release rate leakage current silicone rubber smoke production rate

来源：评论

学校读者我要写书评

暂无评论

An Interpretable Fine-Tuned BERT Approach for Phishing URLs Detection: A Superior Alternative to Feature engineering 11

An Interpretable Fine-Tuned BERT Approach for Phishing URLs ...

引用

11th IEEE International Conference on Social Networks Analysis, Management and Security, SNAMS 2024

作者： Wei, Yi Nakayama, Masaya Sekiya, Yuji Graduate School of Engineering The University of Tokyo Department of Electrical Engineering and Information Systems Tokyo Japan The University of Tokyo Information Technology Center Tokyo Japan Graduate School of Information Science and Technology The University of Tokyo Tokyo Japan

ISBN: (纸本)9798331518349

Phishing is a kind of cybercrime that deceives online users into disclosing confidential information, leading to identity theft and financial loss. Attackers typically use a wide range of vectors to spread phishing links, further increasing the reach and effectiveness of these malicious campaigns. As this threat continues to grow, artificial intelligence strategies have emerged as a promising solution for phishing detection in recent years. However, traditional methods that require substantial manual feature engineering have been observed to be dataset-dependent and lack generalization to unknown or newly evolving phishing attacks. To address these limitations, this study proposes a fine-Tuned BERT model-based phishing detection approach utilizing a novel tokenization method and providing interpretable outputs. By thoroughly searching the latest publicly available datasets, the generalization capabilities of both feature engineering methodologies and the proposed approach are tested. The experimental results demonstrate its effectiveness, significantly surpassing feature engineering, and ensuring the approach remains robust in generalizing across different datasets. © 2024 IEEE.

关键词： Phishing

来源：评论

学校读者我要写书评

暂无评论

A Doughnut Shaped Soft Gripper Based on 4D Printed Hydrogels

A Doughnut Shaped Soft Gripper Based on 4D Printed Hydrogels

引用

2024 IEEE International Conference on Real-Time Computing and Robotics, RCAR 2024

作者： Qiu, Zhe Liu, Zaiyang Xue, Yitong Xie, Qinshang Chihara, Takuto Sakurai, Yuma Kobayashi, Tatsuya Honma, Tsubasa Furukawa, Hidemitsu Wang, Zhongkui Ritsumeikan University Research Organization of Science and Technology Japan Ritsumeikan University Graduate School of Science and Engineering Japan Yamagata University Department of Mechanical Systems Engineering Japan Ritsumeikan University Department of Robotics Japan

ISBN: (纸本)9798350372601

Soft grippers have recently been implemented to various applications due to their flexibility and compliance. They are conventionally actuated by electric and pneumatic systems. However, it is difficult to apply electric- and pneumatic-driven grippers to underwater applications thanks to the lack of waterproof ability. In this paper, we propose a doughnut shaped soft gripper based on four dimensional (4D) printing of hydrogels. The 4D printed hydrogels is capable of deforming when exposing to water stimuli. According to the property analysis of 4D printed hydrogels, such as deformation and force calibration, design parameters of the doughnut shaped gripper was determined. Underwater handling experiments were successfully conducted using the proposed soft gripper for grasping various objects with different shapes. © 2024 IEEE.

关键词： Pneumatics

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：